Automatic Feeding Device for Pressure-Sensitive Adhesive Tape Production Line

Technical Field

The invention provides an automatic feeding device for a pressure-sensitive adhesive tape production line, which belongs to the field of automatic production equipment. The device is mainly used for torsion detection feeding and swinging shaking blanking before automatic laminating of automotive sealing strips and adhesive tapes.

Background Art

At present, the laminating process of automotive sealing strips and adhesive tapes adopts manual operation. The whole process including feeding, polishing and cleaning before laminating, followed by gluing, drying, pressing and cutting is completed manually. This mode not only brings high labor intensity and requires a large workforce, but also causes serious environmental pollution from polishing debris generated in the polishing process and volatile odor produced during gluing.

In view of the current situation of feeding, polishing and laminating industry for sealing strips, there is an urgent demand for an automatic feeding device for pressure-sensitive adhesive tape production line, which realizes torsion-free conveying of sealing strips, smooth feeding, wide application range and zero manual operation.

Contents of the Invention

Purpose of the Invention

The purpose of the invention is to provide an automatic feeding device for a pressure-sensitive adhesive tape production line, which can overcome the existing problems in the feeding, polishing and laminating industry of sealing strips. The device realizes torsion-free conveying, smooth feeding and wide applicability, and can reduce workers' labor intensity.

Technical Solution

An automatic feeding device for a pressure-sensitive adhesive tape production line comprises a feeding frame, a torsion detection feeding device and a swinging shaking blanking mechanism.

The feeding frame comprises a strip protecting box, a connecting frame and a support frame. The strip protecting box is of a rectangular hexahedral box structure. Two faces with the shortest side length are unsealed, and the two unsealed faces share one shortest edge. The strip protecting box is placed on the ground via another sealed face with the shortest side length.The connecting frame is of a rectangular planar frame structure. Supporting legs are fixed at four corners on the same side plane of the connecting frame, and the connecting frame is mounted on one unsealed face of the strip protecting box through the tail ends of the four supporting legs.The support frame is Z-shaped. The tail end of one Z-shaped side arm is mounted at the middle of the long edge of the upward-facing unsealed face of the strip protecting box, and the other Z-shaped side arm extends upward. The middle part of the Z-shaped middle arm of the support frame is supported by a supporting rod at the end of the long edge of the upward-facing unsealed face of the strip protecting box away from the connecting frame. The Z-shaped plane of the support frame is perpendicular to the upward-facing unsealed face of the strip protecting box, and lies on the same plane as the same long edge of the upward-facing unsealed face.

The torsion detection feeding device comprises a traction detection device and a reverse torsion device.The traction detection device includes a feeding traction device and a detection material guide device.The feeding traction device comprises a feeding mounting plate, a feeding traction driver, a feeding wheel, a feeding rocker arm, a strip pressing wheel and a feeding tension spring. A feeding traction driver is mounted on one side plate surface of the feeding mounting plate. The extending end of the output shaft of the feeding traction driver passing through the feeding mounting plate is fitted with a feeding wheel. One end of the feeding rocker arm is hinged to the feeding mounting plate; the feeding rocker arm and the feeding wheel are located on the same side of the feeding mounting plate. A strip pressing wheel is mounted at the end of the feeding rocker arm away from the hinge point, and the axis of the strip pressing wheel is parallel to the axis of the feeding wheel. One end of the feeding tension spring is hung on the end of the feeding rocker arm fitted with the strip pressing wheel, and the other end is hung on the feeding mounting plate.

The detection material guide device comprises a detection mounting plate, a material guide base, a material guide die, material breakage sensors and torsion sensors. A material guide base is installed in the mounting hole at the middle of the detection mounting plate, and the material guide die is mounted inside the material guide base. A pair of material breakage sensors are arranged at one edge of the material guiding hole of the material guide die. A pair of torsion sensors are installed on the plate surface of the detection mounting plate where the material breakage sensors are arranged. The symmetry plane of the pair of torsion sensors perpendicular to the plate surface of the detection mounting plate is parallel to one side edge of the detection mounting plate.The detection material guide device is mounted via one side edge of the detection mounting plate at the edge of the plate surface of the feeding mounting plate of the feeding traction device where the feeding wheel is installed. The plate surface of the detection mounting plate is perpendicular to the plate surface of the feeding mounting plate, and the detection mounting plate is located on the side of the feeding rocker arm away from the feeding traction device. The plate surface of the detection mounting plate fitted with torsion sensors faces toward the feeding wheel of the detection material guide device. The symmetry plane of the pair of torsion sensors perpendicular to the plate surface of the detection mounting plate is parallel to the plate surface of the feeding mounting plate.The traction detection device is mounted via the feeding mounting plate of the feeding traction device on the side of the upward-extending Z-shaped side arm of the support frame of the feeding frame away from the connecting frame. The feeding mounting plate of the feeding traction device is parallel to the Z-shaped plane of the support frame, and the feeding wheel of the feeding traction device faces toward the other long edge of the upward-facing unsealed face of the strip protecting box without the support frame installed. The detection mounting plate of the detection material guide device is parallel to the upward-facing unsealed face of the strip protecting box. The plate surface of the detection material guide device fitted with torsion sensors faces upward, and the torsion sensors are located closer to the connecting frame of the feeding frame relative to the material guide base.

The reverse torsion device comprises a torsion frame, a torsion mounting plate, a torsion shaft sleeve, a reverse torsion driver, a driving torsion wheel, a driven torsion wheel and a torsion disc. The torsion frame of rectangular frame structure is placed on the ground on the side of the strip protecting box away from the connecting frame. A torsion mounting plate with its plate surface parallel to the ground is fixed at the middle of the upward frame plane of the torsion frame. A torsion shaft sleeve whose axis is perpendicular to the plate surface of the torsion mounting plate is installed at the middle of the upward plate surface of the torsion mounting plate. A reverse torsion driver is mounted on the downward plate surface of the torsion mounting plate. The extending end of the output shaft of the reverse torsion driver passing through the torsion mounting plate is fitted with a driving torsion wheel. The driven torsion wheel meshed with the driving torsion wheel is installed on the torsion shaft sleeve, and a torsion disc is mounted on the upward end face of the driven torsion wheel.

The swinging shaking blanking mechanism comprises a swinging shaking driving mechanism and a strip guide groove.The swinging shaking driving mechanism includes a swinging shaking mounting plate, a swinging shaking driver, a swinging shaking wheel, a feeding wheel, swinging shaking supporting legs and a strip pressing roller. The swinging shaking mounting plate is Z-shaped. The swinging shaking mounting plate is fixed on the support frame mounted at the middle of the long edge of the upward-facing unsealed face of the strip protecting box, via a plate surface of one Z-shaped side arm that is perpendicular to the Z-shaped plane and away from the other Z-shaped side arm. The swinging shaking mounting plate is close to the strip protecting box and on the side of the other long edge of the upward-facing unsealed face of the strip protecting box without the support frame installed. A swinging shaking driver is mounted on the same plate surface of the same Z-shaped side arm fixed to the support frame, and the swinging shaking driver is located on the side of the support frame away from the other Z-shaped side arm. The swinging shaking wheel with square cross-section is installed on the extending end of the output shaft of the swinging shaking driver passing through the swinging shaking mounting plate. A feeding wheel is mounted on the plate surface of the other Z-shaped side arm of the swinging shaking mounting plate. The feeding wheel and the swinging shaking wheel are on the same side of the swinging shaking mounting plate, and their axes are mutually parallel. Swinging shaking supporting legs provided with long grooves are fixed on the other plate surface of the Z-shaped side arm of the swinging shaking mounting plate fitted with the feeding wheel. The long grooves on the swinging shaking supporting legs extend outward away from the other Z-shaped side arm. The roller shank of the strip pressing roller is supported inside the long grooves of the swinging shaking supporting legs.

The strip guide groove comprises a strip guide groove body, a strip guide sleeve and strip guide lugs. The strip guide groove body is of U-shaped groove structure. A U-shaped strip guide sleeve is arranged at one end of the U-shaped opening of the strip guide groove body in the direction perpendicular to its U-shaped plane. The U-shaped plane of the strip guide sleeve is parallel to the U-shaped plane of the strip guide groove body; their symmetry planes perpendicular to the U-shaped plane are aligned; and the U-shaped groove bottom of the strip guide sleeve is on the side away from the strip guide groove body. Three strip guide lugs are arranged on the outer side of one U-shaped side wall of the strip guide groove body. The strip guide groove is mounted on the support frame of the feeding frame via the three strip guide lugs, and located on the side of the support frame fitted with the swinging shaking mounting plate of the swinging shaking driving mechanism.

On the basis of the prior art, the strip protecting box of the feeding frame is of a rectangular hexahedral box structure. Two faces with the shortest side length are unsealed, and the two unsealed faces share one shortest edge. The strip protecting box is placed on the ground via another sealed face with the shortest side length.The connecting frame is of a rectangular planar frame structure. Supporting legs are fixed at four corners on the same side plane of the connecting frame, and the connecting frame is mounted on one unsealed face of the strip protecting box through the tail ends of the four supporting legs.The support frame is Z-shaped. The tail end of one Z-shaped side arm is mounted at the middle of the long edge of the upward-facing unsealed face of the strip protecting box, and the other Z-shaped side arm extends upward. The middle part of the Z-shaped middle arm of the support frame is supported by a supporting rod at the end of the long edge of the upward-facing unsealed face of the strip protecting box away from the connecting frame. The Z-shaped plane of the support frame is perpendicular to the upward-facing unsealed face of the strip protecting box, and lies on the same plane as the same long edge of the upward-facing unsealed face.

A feeding traction driver is mounted on one side plate surface of the feeding mounting plate of the feeding traction device of the traction detection device of the torsion detection feeding device. The extending end of the output shaft of the feeding traction driver passing through the feeding mounting plate is fitted with a feeding wheel. One end of the feeding rocker arm is hinged to the feeding mounting plate; the feeding rocker arm and the feeding wheel are located on the same side of the feeding mounting plate. A strip pressing wheel is mounted at the end of the feeding rocker arm away from the hinge point, and the axis of the strip pressing wheel is parallel to the axis of the feeding wheel. One end of the feeding tension spring is hung on the end of the feeding rocker arm fitted with the strip pressing wheel, and the other end is hung on the feeding mounting plate.A material guide base is installed in the mounting hole at the middle of the detection mounting plate of the detection material guide device, and the material guide die is mounted inside the material guide base. A pair of material breakage sensors are arranged at one edge of the material guiding hole of the material guide die. A pair of torsion sensors are installed on the plate surface of the detection mounting plate where the material breakage sensors are arranged. The symmetry plane of the pair of torsion sensors perpendicular to the plate surface of the detection mounting plate is parallel to one side edge of the detection mounting plate.The detection material guide device is mounted via one side edge of the detection mounting plate at the edge of the plate surface of the feeding mounting plate of the feeding traction device where the feeding wheel is installed. The plate surface of the detection mounting plate is perpendicular to the plate surface of the feeding mounting plate, and the detection mounting plate is located on the side of the feeding rocker arm away from the feeding traction device. The plate surface of the detection mounting plate fitted with torsion sensors faces toward the feeding wheel of the detection material guide device. The symmetry plane of the pair of torsion sensors perpendicular to the plate surface of the detection mounting plate is parallel to the plate surface of the feeding mounting plate.The traction detection device is mounted via the feeding mounting plate of the feeding traction device on the side of the upward-extending Z-shaped side arm of the support frame of the feeding frame away from the connecting frame. The feeding mounting plate of the feeding traction device is parallel to the Z-shaped plane of the support frame, and the feeding wheel of the feeding traction device faces toward the other long edge of the upward-facing unsealed face of the strip protecting box without the support frame installed. The detection mounting plate of the detection material guide device is parallel to the upward-facing unsealed face of the strip protecting box. The plate surface of the detection material guide device fitted with torsion sensors faces upward, and the torsion sensors are located closer to the connecting frame of the feeding frame relative to the material guide base.

The torsion frame of the reverse torsion device is of rectangular frame structure and placed on the ground on the side of the strip protecting box away from the connecting frame. A torsion mounting plate with its plate surface parallel to the ground is fixed at the middle of the upward frame plane of the torsion frame. A torsion shaft sleeve whose axis is perpendicular to the plate surface of the torsion mounting plate is installed at the middle of the upward plate surface of the torsion mounting plate. A reverse torsion driver is mounted on the downward plate surface of the torsion mounting plate. The extending end of the output shaft of the reverse torsion driver passing through the torsion mounting plate is fitted with a driving torsion wheel. The driven torsion wheel meshed with the driving torsion wheel is installed on the torsion shaft sleeve, and a torsion disc is mounted on the upward end face of the driven torsion wheel.

The swinging shaking mounting plate of the swinging shaking driving mechanism of the swinging shaking blanking mechanism is Z-shaped. The swinging shaking mounting plate is fixed on the support frame mounted at the middle of the long edge of the upward-facing unsealed face of the strip protecting box, via a plate surface of one Z-shaped side arm that is perpendicular to the Z-shaped plane and away from the other Z-shaped side arm. The swinging shaking mounting plate is close to the strip protecting box and on the side of the other long edge of the upward-facing unsealed face of the strip protecting box without the support frame installed. A swinging shaking driver is mounted on the same plate surface of the same Z-shaped side arm fixed to the support frame, and the swinging shaking driver is located on the side of the support frame away from the other Z-shaped side arm. The swinging shaking wheel with square cross-section is installed on the extending end of the output shaft of the swinging shaking driver passing through the swinging shaking mounting plate. A feeding wheel is mounted on the plate surface of the other Z-shaped side arm of the swinging shaking mounting plate. The feeding wheel and the swinging shaking wheel are on the same side of the swinging shaking mounting plate, and their axes are mutually parallel. Swinging shaking supporting legs provided with long grooves are fixed on the other plate surface of the Z-shaped side arm of the swinging shaking mounting plate fitted with the feeding wheel. The long grooves on the swinging shaking supporting legs extend outward away from the other Z-shaped side arm. The roller shank of the strip pressing roller is supported inside the long grooves of the swinging shaking supporting legs.

The strip guide groove body of the strip guide groove is of U-shaped groove structure. A U-shaped strip guide sleeve is arranged at one end of the U-shaped opening of the strip guide groove body in the direction perpendicular to its U-shaped plane. The U-shaped plane of the strip guide sleeve is parallel to the U-shaped plane of the strip guide groove body; their symmetry planes perpendicular to the U-shaped plane are aligned; and the U-shaped groove bottom of the strip guide sleeve is on the side away from the strip guide groove body. Three strip guide lugs are arranged on the outer side of one U-shaped side wall of the strip guide groove body. The strip guide groove is mounted on the support frame of the feeding frame via the three strip guide lugs, and located on the side of the support frame fitted with the swinging shaking mounting plate of the swinging shaking driving mechanism.

Working Principle

Firstly, select a corresponding material guide die and install it into the hole of the material guide base.Coil the sealing strip into a disc and place it at the center of the torsion disc of the reverse torsion device of the torsion detection feeding device. Pull out one end of the sealing strip at the outer edge and insert it into the guiding hole of the material guide die from the lower end surface of the material guide die of the detection material guide device of the traction detection device. Then pull the sealing strip out from above the material guide die and route it over the feeding wheel. Afterwards, pull the strip pressing wheel and stretch the feeding tension spring via the feeding rocker arm, so that the sealing strip passes between the feeding wheel and the strip pressing wheel. Release the strip pressing wheel, and the feeding tension spring presses the sealing strip against the feeding wheel.

Pass the sealing strip through the strip guide sleeve of the strip guide groove of the swinging shaking blanking mechanism from the side away from the swinging shaking driving mechanism, and then pull the sealing strip along the strip guide groove toward the swinging shaking driving mechanism. When reaching the swinging shaking wheel of the swinging shaking driving mechanism, route the sealing strip over the swinging shaking wheel. After leaving a set length, wind the sealing strip onto the feeding wheel from the side of the feeding wheel away from the swinging shaking wheel, and finally pull the sealing strip above the feeding wheel toward the connecting frame of the feeding frame.

Start the feeding traction driver of the feeding traction device of the torsion detection feeding device and the swinging shaking driver of the swinging shaking driving mechanism of the swinging shaking blanking mechanism. The sealing strip is evenly delivered from above the feeding wheel of the swinging shaking blanking mechanism at a set speed.

Sealing strips have various cross-sectional shapes. After being pulled from the disc mounted on the torsion disc of the reverse torsion device of the torsion detection feeding device, the cross-section of the sealing strip rotates, making it impossible to keep the surface for tape lamination facing upward all the time. Therefore, a pair of torsion sensors are arranged on the detection mounting plate of the detection material guide device of the traction detection device. When the sealing strip passes from above, the torsion sensors detect the cross-sectional form of the sealing strip online. When deflection of the sealing strip cross-section is detected, a command is sent to the reverse torsion driver of the reverse torsion device, and the reverse torsion driver rotates reversely by a corresponding angle until the torsion sensors detect that the cross-section of the sealing strip returns to the normal state, then a stop command is sent to the reverse torsion driver again. A pair of material breakage sensors are also arranged on the detection mounting plate of the detection material guide device, which trigger an alarm and equipment shutdown when no sealing strip is detected passing through.

Sealing strips are generally made of rubber and have a high friction coefficient when contacting metal materials. Therefore, jamming may occur when the sealing strip runs along the strip guide groove toward the swinging shaking driving mechanism. For this reason, the cross-section of the swinging shaking wheel of the swinging shaking driving mechanism is designed to be square. During rotation, it drives the sealing strip to generate periodic shaking, so as to effectively keep the sealing strip running smoothly toward the swinging shaking driving mechanism.

Beneficial Effects

Compared with the existing technologies in this field, the detection material guide device of the torsion detection feeding device is equipped with a pair of torsion sensors, which can detect the cross-sectional form of the sealing strip online. When cross-section deflection of the sealing strip is detected, the reverse torsion driver is activated to rotate reversely by a corresponding angle until the cross-section of the sealing strip returns to the normal state, thereby ensuring that the surface of the sealing strip for tape lamination faces upward constantly.The detection material guide device is provided with a pair of material breakage sensors to online monitor the passage of the sealing strip and guarantee stable supply of the sealing strip.The swinging shaking wheel of the swinging shaking driving mechanism adopts a square cross-section. When rotating, it drives the sealing strip to produce periodic shaking, which effectively ensures the sealing strip runs smoothly toward the swinging shaking driving mechanism inside the strip guide groove.