Automatic stripping method of product protective film

Abstract

The invention discloses an automatic stripping method for a product protective film, which is used for tearing off protective films on the lower surfaces of at least two workpieces sequentially arranged from left to right, and the upper surface of each workpiece is matched with a vacuum adsorption plate in an adsorption manner. A film tearing mechanism based on the automatic stripping method of the product protective film comprises a strip-shaped vertical plate extending left and right, a first material guide roller rotationally arranged on the front side of the left end of the strip-shaped vertical plate, a second material guide roller rotationally arranged on the front side of the right end of the strip-shaped vertical plate, a discharging assembly and a collecting assembly. The material collecting assembly comprises a mounting vertical plate, a material collecting rotating shaft rotationally mounted at the lower end of the mounting vertical plate and a material collecting motor mounted on the surface of the rear side of the mounting vertical plate. According to the film tearing device, interference on workpieces, especially relative positions of the workpieces in the film tearing process can be avoided, the adhesive tape roll for film tearing is convenient to assemble, disassemble and replace, and the situation that feeding is insufficient due to following rotation of the adhesive tape roll is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of automated processing, and in particular to a method for automatically peeling off a product protective film. Background Art

[0002] In automated processing production lines, a protective film is usually attached to the surface of the product to improve the protection of the processed area of ​​the product. When the above product is bonded with other components for processing, the protective film needs to be torn off for subsequent processing. In the prior art, the protective film on the product is usually torn off by traditional manual tearing and by clamping the protective film with the gripper of a robot and then tearing it off.

[0003] Since the products to be torn off are usually expensive and fragile, unnecessary contact with the products during film tearing can easily damage the products. Manual film tearing will inevitably touch and interfere with the surface of the products to be torn off, causing poor assembly and display in subsequent processes, resulting in reduced product quality. The speed of manual film tearing is greatly affected by the proficiency of the personnel, the labor intensity is also relatively high, and the production efficiency is low and the cost is high. In addition, when the protective film is completely attached to the product and has no tearing angle, manual film tearing or mechanical claw film tearing requires insertion from the gap between the protective film and the product during the film tearing process, which makes film tearing more difficult and affects the quality of the products to be torn off, and the success rate of film tearing is low. Furthermore, when it is necessary to tear off multiple workpieces arranged in a row at one time, it is even more difficult to avoid adverse interference with the workpieces during the film tearing process. Summary of the invention

[0004] The main purpose of the present invention is to provide an automatic peeling method for product protective film, which can not only avoid interference with workpieces, especially the relative positions of workpieces during film peeling, but also facilitate the loading and unloading and replacement of film peeling tape rolls, avoiding insufficient material feeding due to the rotation of the tape roll.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a method for automatically peeling off a product protective film, which is used to tear off the protective films on the lower surfaces of at least two workpieces arranged in sequence from left to right, wherein the upper surface of each of the workpieces is adsorbed and matched with a vacuum adsorption plate, and the film-tearing mechanism based on the automatic peeling off method of the product protective film includes: a strip vertical plate extending left and right, a first material guide roller rotatably arranged on the front side of the left end of the strip vertical plate, a second material guide roller rotatably arranged on the front side of the right end of the strip vertical plate, an adhesive tape for bonding with the protective film, and a material discharge component and a material receiving component respectively arranged under the strip vertical plate, wherein the material receiving component further includes: a mounting vertical plate connected to the strip vertical plate at the upper end, a material receiving shaft rotatably installed at the lower end of the mounting vertical plate, and a material receiving motor installed on the rear side surface of the mounting vertical plate; The outer side of a core shaft rotatably arranged above the material receiving shaft is sleeved with a power roller, one end of the core shaft passes through the mounting vertical plate and is connected to the output shaft of the material receiving motor, a pulley is installed on the material receiving shaft and the core shaft and on the rear side of the mounting vertical plate, and the two pulleys are connected by a belt transmission, a rotating plate is arranged on the front side of the mounting vertical plate, the upper end of the rotating plate is rotatably mounted on the mounting vertical plate through a pin shaft, and a clamping roller arranged parallel to one side of the power roller is rotatably installed on the lower end of the rotating plate, a first connecting pin is arranged above the rotating plate on the side opposite to the power roller, a spring is connected between the first connecting pin and the second connecting pin arranged on the upper end surface of the rotating plate, so that the clamping roller and the power roller installed at the lower end of the rotating plate are pressed against each other; A movable plate movable in the left-right direction is installed on the front surface of the strip vertical plate and between the first material guide roller and the second material guide roller through a track and a slider, and the front sides of the left and right ends of the movable plate are rotatably provided with a first movable roller and a second movable roller, and the second movable roller on the right side is higher than the first movable roller; The automatic peeling method of the product protective film comprises the following steps: Step 1, install the single-sided adhesive tape roll on the unwinding assembly, and pass one end of the tape located on the outermost circle around the first guide roller, the second movable roller, the first movable roller, the second guide roller, and between the clamping roller and the power roller of the receiving assembly in sequence, and then wrap it around the receiving shaft, and make the non-adhesive surface of the tape roll in contact with the outer circumference of the first guide roller, the second movable roller, and the second guide roller, respectively, and the adhesive surface of the tape roll in contact with the outer circumference of the first movable roller, and the adhesive surface of the tape between the first guide roller and the second movable roller faces upward; Step 2: Place the movable plate at the leftmost side of its travel, and then move the vacuum adsorption plate with at least two workpieces adsorbed thereon to the top of the second movable roller so that the left end of the workpiece on the left side of the vacuum adsorption plate is on the right side of the second movable roller and close to the second movable roller; Step 3: driving the movable plate to move rightward to the rightmost side of its travel. During this process, the second movable roller rolls and squeezes the protective film on the workpiece, so that the adhesive surface of the adhesive tape that is transmitted from between the first movable roller and the second material guide roller to between the second movable roller and the first material guide roller as the movable plate moves rightward is gradually bonded to the protective film on the lower surface of each workpiece; Step 4: driving the movable plate to move leftward to the leftmost side of its travel. During this process, as the movable plate moves leftward, the adhesive tape transmitted from between the second movable roller and the first material guide roller to between the first movable roller and the second material guide roller gradually tears off the protective film bonded thereto; Step 5: The rewinding motor drives the rewinding shaft and the power roller to rotate synchronously, rewinds the waste tape with the protective film, and replenishes the new tape from the unwinding assembly to between the first guide roller and the second guide roller; Step 6. Repeat steps 2 to 5.

[0006] The further improved scheme in the above technical scheme is as follows: 1. In the above scheme, the unloading assembly for installing the tape roll formed by winding the tape further includes: a base arranged below the left end of the strip vertical plate and a support plate arranged at the front side of the base, the support plate is sleeved on one end of a support shaft rotatably mounted on the base, the other end of the support shaft and a damper is installed at the rear side of the base, a plurality of floating blocks distributed along the circumferential direction are embedded and installed on the outer circumferential surface of the support plate, and each of the floating blocks that can move radially respectively and are embedded in the support plate has one end connected to at least one supporting spring extending radially along the support plate, and the other end of the supporting spring that is connected to the floating block at one end is embedded in a receiving groove opened on the support plate, so that the outer end surface of each floating block is in compression contact with the inner wall of the tape roll sleeved on the support plate.

[0007] 1. In the above scheme, the support shaft is provided with two baffles distributed on both sides of the support plate.

[0008] 2. In the above solution, each of the floating blocks is connected to two supporting springs.

[0009] 3. In the above solution, the outer surface of each floating block opposite to the base is configured as an inwardly inclined slope.

[0010] 4. In the above solution, the workpiece is a horizontally arranged steel plate, and the protective film is a release film.

[0011] 5. In the above solution, the second movable roller and the clamping roller are both elastic rollers.

[0012] 6. In the above scheme, a fourth material guide roller having the same height as the first material guide roller is rotatably arranged between the first material guide roller and the second movable roller. When the second movable roller moves to the left end of its travel along with the movable plate, the fourth material guide roller is arranged adjacent to the second movable roller.

[0013] 7. In the above solution, the second movable roller is at the same height as or slightly higher than the fourth material guide roller, so that the adhesive surface of the adhesive tape between the first material guide roller and the second movable roller remains horizontal or slightly inclined.

[0014] 8. In the above scheme, the material receiving shaft and the core shaft are each rotatably mounted on the mounting vertical plate through a bearing seat.

[0015] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: The automatic peeling method of the product protective film of the present invention sequentially and evenly adheres the adhesive surface of the tape to the protective films on the lower surfaces of multiple workpieces respectively, and then gradually tears off the protective films one by one through the adhesive force of the tape, and in this process, the movable roller that reciprocates with the movable plate realizes the positive attachment and reverse tearing of the tape when the material discharge and material collection components are stationary, thereby ensuring the stability, uniformity and controllability of the rate during the tape attachment and tearing process, improving the film tearing effect, avoiding interference with the workpieces, especially the relative positions between the workpieces, during the film tearing process, improving the processing efficiency and accuracy, and can also realize the stable winding of the waste tape and the supplementary feeding of the tape during the material collection process after each tearing operation; further, the material discharge component used for installing the tape roll formed by winding the tape further The cam is configured to move the spring between the one hand holding the control lever and the other hand holding the control lever, and the cam is configured to move the spring between the one hand holding the control lever and the other hand holding the control lever, so that the cam is secured to the base and the base is securely attached to the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the film tearing device of the present invention from a first viewing angle; Figure 2 It is a schematic diagram of the overall structure of the film tearing device of the present invention from a second viewing angle; Figure 3 It is a schematic diagram of the overall structure of the film-tearing device of the present invention from a third viewing angle; Figure 4 It is a schematic diagram of the overall structure of the film-tearing device of the present invention from a fourth viewing angle; Figure 5 for Figure 4 A magnified view of the local structure at point A in the middle; Figure 6 This is a structural schematic diagram of the roller room of the film tearing equipment of the present invention; Figure 7 It is a structural schematic diagram of a workpiece of the film tearing equipment of the present invention; Figure 8 It is a schematic diagram of the partial structure of the discharge component of the film tearing device of the present invention; Fig. 9 It is a schematic diagram of the partial structure of the support plate of the discharge assembly of the film tearing device of the present invention.

[0017] In the above drawings: 100, adhesive tape; 200, workpiece; 300, protective film; 400, vacuum adsorption plate; 1, strip vertical plate; 2, first guide roller; 3, second guide roller; 41, track; 42, slider; 5, movable plate; 6, first movable roller; 7, second movable roller; 8, rodless cylinder; 81, movable part; 9, push block; 91, strip through hole; 10, third guide wheel; 11, fourth guide roller; 12, third movable roller; 13, support shaft; 14, bearing; 15, retaining ring; 16, installation Install vertical plate; 17, material collection shaft; 18, material collection motor; 19, core shaft; 20, power roller; 21, pulley; 22, belt; 23, bearing seat; 24, tensioning wheel; 25, mounting plate; 251, strip hole; 26, rotating plate; 27, pin shaft; 28, clamping roller; 29, spring; 291, first connecting pin; 292, second connecting pin; 30, base; 31, support plate; 32, support shaft; 33, damper; 34, floating block; 35, support spring; 36, receiving groove; 37, baffle plate. DETAILED DESCRIPTION

[0018] The present invention can be further understood through the specific embodiments given below, but they are not intended to limit the present invention.

[0019] Embodiment 1: A method for automatically peeling off a product protective film, used for tearing off the protective film 300 on the lower surface of each of at least two workpieces 200 arranged in sequence from left to right, wherein the upper surface of each of the workpieces 200 is adsorbed and matched with a vacuum adsorption plate 400, and the film peeling mechanism based on the automatic peeling off method of the product protective film includes: a strip vertical plate 1 extending left and right, a first material guide roller 2 rotatably arranged on the front side of the left end of the strip vertical plate 1, a second material guide roller 3 rotatably arranged on the front side of the right end of the strip vertical plate 1, an adhesive tape 100 for bonding with the protective film 300, and a material discharge assembly and a material receiving assembly respectively arranged below the strip vertical plate 1, wherein the material receiving assembly further includes: a mounting vertical plate 16 connected to the strip vertical plate 1 at the upper end, a material receiving shaft 17 rotatably mounted on the lower end of the mounting vertical plate 16, and a material receiving motor 18 mounted on the rear side surface of the mounting vertical plate 16; A power roller 20 is mounted on the outer side of a core shaft 19 rotatably arranged above the receiving shaft 17. One end of the core shaft 19 passes through the mounting vertical plate 16 and is connected to the output shaft of the receiving motor 18. A pulley 21 is installed on the receiving shaft 17 and the core shaft 19 and located on the rear side of the mounting vertical plate 16. The two pulleys 21 are connected by a belt 22. A rotating plate 26 is arranged on the front side of the mounting vertical plate 16. The upper end of the rotating plate 26 is connected by a pin. 27 is rotatably mounted on the mounting vertical plate 16, and a clamping roller 28 arranged parallel to one side of the power roller 20 is rotatably mounted on the lower end of the rotating plate 26, and a first connecting pin 291 is arranged on the upper side of the rotating plate 26 opposite to the power roller 20, and a spring 29 is connected between the first connecting pin 291 and a second connecting pin 292 arranged on the upper end surface of the rotating plate 26, so that the clamping roller 28 installed on the lower end of the rotating plate 26 and the power roller 20 are pressed against each other; A movable plate 5 movable in the left-right direction is installed on the front surface of the strip vertical plate 1 and between the first material guide roller 2 and the second material guide roller 3 through a track 41 and a slider 42. The front sides of the left and right ends of the movable plate 5 are rotatably provided with a first movable roller 6 and a second movable roller 7, respectively, and the second movable roller 7 on the right side is higher than the first movable roller 6. The automatic peeling method of the product protective film comprises the following steps: Step 1, install the single-sided adhesive tape roll on the unwinding assembly, and pass one end of the adhesive tape 100 located on the outermost circle around the first guide roller 2, the second movable roller 7, the first movable roller 6, the second guide roller 3, and between the clamping roller 28 and the power roller 20 of the receiving assembly in sequence, and then be wound around the receiving shaft 17, and make the non-adhesive surface of the adhesive tape 100 roll in contact with the outer circumference of the first guide roller 2, the second movable roller 7 and the second guide roller 3 respectively, and the adhesive surface of the adhesive tape 100 roll in contact with the outer circumference of the first movable roller 6, and the adhesive surface of the adhesive tape 100 located between the first guide roller 2 and the second movable roller 7 faces upward; Step 2: Place the movable plate 5 at the leftmost side of its travel, and then move the vacuum adsorption plate 400 with at least two workpieces 200 adsorbed thereon to the top of the second movable roller 7 so that the left end of the workpiece 200 on the left side of the vacuum adsorption plate 400 is on the right side of the second movable roller 7 and close to the second movable roller 7; Step 3: Drive the movable plate 5 to move rightward to the rightmost side of its travel. During this process, the second movable roller 7 and the protective film 300 on the workpiece 200 are rolled and squeezed, so that the adhesive surface of the adhesive tape 100 transmitted from between the first movable roller 6 and the second guide roller 3 to between the second movable roller 7 and the first guide roller 2 as the movable plate 5 moves rightward is gradually bonded to the protective film 300 on the lower surface of each workpiece 200; Step 4: Drive the movable plate 5 to move leftward to the leftmost side of its travel. During this process, as the movable plate 5 moves leftward, the adhesive tape 100 transmitted from between the second movable roller 7 and the first guide roller 2 to between the first movable roller 6 and the second guide roller 3 gradually tears off the protective film 300 bonded thereto; Step 5: The rewinding motor 18 drives the rewinding shaft 17 and the power roller 20 to rotate synchronously, rewinds the waste tape with the protective film 300, and replenishes the new tape from the unwinding assembly to between the first guide roller 2 and the second guide roller 3; Step 6. Repeat steps 2 to 5.

[0020] The above-mentioned unloading assembly for installing the tape roll formed by winding the tape 100 further includes: a base 30 arranged below the left end of the strip vertical plate 1 and a support plate 31 arranged on the front side of the base 30, the above-mentioned support plate 31 is sleeved on one end of a support shaft 32 rotatably mounted on the base 30, and the other end of the above-mentioned support shaft 32 is provided with a damper 33 located at the rear side of the base 30, and a plurality of floating blocks 34 distributed along the circumferential direction are embedded and installed on the outer circumferential surface of the above-mentioned support plate 31. Each of the above-mentioned floating blocks 34 that can move radially is embedded in the support plate 31. One end is connected to at least one supporting spring 35 extending radially along the support plate 31, and the other end of the above-mentioned supporting spring 35 connected to the floating block 34 at one end is embedded in the accommodating groove 36 opened on the supporting plate 31, so that the outer end surface of each of the above-mentioned floating blocks 34 is pressed and contacted with the inner wall of the tape roll sleeved on the support plate 31.

[0021] The support shaft 32 is provided with two baffle plates 37 which are distributed on both sides of the support plate 31 .

[0022] Two supporting springs 35 are connected to each of the floating blocks 34 .

[0023] The outer surface of each floating block 34 at one end opposite to the base 30 is configured as an inwardly inclined slope.

[0024] The workpiece 200 is a horizontally arranged steel plate, and the protective film 300 is a release film.

[0025] The second movable roller 7 and the clamping roller 28 are both elastic rollers.

[0026] A fourth guide roller 11 having the same height as the first guide roller 2 is rotatably arranged between the first guide roller 2 and the second movable roller 7. When the second movable roller 7 moves to the left end of its travel along with the movable plate 5, the fourth guide roller 11 is arranged adjacent to the second movable roller 7.

[0027] The second movable roller 7 is at the same height as or slightly higher than the fourth material guiding roller 11 , so that the adhesive surface of the adhesive tape 100 between the first material guiding roller 2 and the second movable roller 7 remains horizontal or slightly inclined.

[0028] The material receiving shaft 17 and the core shaft 19 are each rotatably mounted on the mounting vertical plate 16 via a bearing seat 23 .

[0029] Embodiment 2: A method for automatically peeling off a product protective film, used for tearing off the protective film 300 on the lower surface of each of at least two workpieces 200 arranged in sequence from left to right, wherein the upper surface of each of the workpieces 200 is adsorbed and matched with a vacuum adsorption plate 400, and the film peeling mechanism based on the automatic peeling off method of the product protective film includes: a strip vertical plate 1 extending left and right, a first material guide roller 2 rotatably arranged on the front side of the left end of the strip vertical plate 1, a second material guide roller 3 rotatably arranged on the front side of the right end of the strip vertical plate 1, an adhesive tape 100 for bonding with the protective film 300, and a material discharge assembly and a material receiving assembly respectively arranged below the strip vertical plate 1, wherein the material receiving assembly further includes: a mounting vertical plate 16 connected to the strip vertical plate 1 at the upper end, a material receiving shaft 17 rotatably mounted on the lower end of the mounting vertical plate 16, and a material receiving motor 18 mounted on the rear side surface of the mounting vertical plate 16; A power roller 20 is mounted on the outer side of a core shaft 19 rotatably arranged above the receiving shaft 17. One end of the core shaft 19 passes through the mounting vertical plate 16 and is connected to the output shaft of the receiving motor 18. A pulley 21 is installed on the receiving shaft 17 and the core shaft 19 and located on the rear side of the mounting vertical plate 16. The two pulleys 21 are connected by a belt 22. A rotating plate 26 is arranged on the front side of the mounting vertical plate 16. The upper end of the rotating plate 26 is connected by a pin. 27 is rotatably mounted on the mounting vertical plate 16, and a clamping roller 28 arranged parallel to one side of the power roller 20 is rotatably mounted on the lower end of the rotating plate 26, and a first connecting pin 291 is arranged on the upper side of the rotating plate 26 opposite to the power roller 20, and a spring 29 is connected between the first connecting pin 291 and a second connecting pin 292 arranged on the upper end surface of the rotating plate 26, so that the clamping roller 28 installed on the lower end of the rotating plate 26 and the power roller 20 are pressed against each other; A movable plate 5 movable in the left-right direction is installed on the front surface of the strip vertical plate 1 and between the first material guide roller 2 and the second material guide roller 3 through a track 41 and a slider 42. The front sides of the left and right ends of the movable plate 5 are rotatably provided with a first movable roller 6 and a second movable roller 7, respectively, and the second movable roller 7 on the right side is higher than the first movable roller 6. The automatic peeling method of the product protective film comprises the following steps: Step 1, install the single-sided adhesive tape roll on the unwinding assembly, and pass one end of the adhesive tape 100 located on the outermost circle around the first guide roller 2, the second movable roller 7, the first movable roller 6, the second guide roller 3, and between the clamping roller 28 and the power roller 20 of the receiving assembly in sequence, and then be wound around the receiving shaft 17, and make the non-adhesive surface of the adhesive tape 100 roll in contact with the outer circumference of the first guide roller 2, the second movable roller 7 and the second guide roller 3 respectively, and the adhesive surface of the adhesive tape 100 roll in contact with the outer circumference of the first movable roller 6, and the adhesive surface of the adhesive tape 100 located between the first guide roller 2 and the second movable roller 7 faces upward; Step 2: Place the movable plate 5 at the leftmost side of its travel, and then move the vacuum adsorption plate 400 with at least two workpieces 200 adsorbed thereon to the top of the second movable roller 7 so that the left end of the workpiece 200 on the left side of the vacuum adsorption plate 400 is on the right side of the second movable roller 7 and close to the second movable roller 7; Step 3: Drive the movable plate 5 to move rightward to the rightmost side of its travel. During this process, the second movable roller 7 and the protective film 300 on the workpiece 200 are rolled and squeezed, so that the adhesive surface of the adhesive tape 100 transmitted from between the first movable roller 6 and the second guide roller 3 to between the second movable roller 7 and the first guide roller 2 as the movable plate 5 moves rightward is gradually bonded to the protective film 300 on the lower surface of each workpiece 200; Step 4: Drive the movable plate 5 to move leftward to the leftmost side of its travel. During this process, as the movable plate 5 moves leftward, the adhesive tape 100 transmitted from between the second movable roller 7 and the first guide roller 2 to between the first movable roller 6 and the second guide roller 3 gradually tears off the protective film 300 bonded thereto; Step 5: The rewinding motor 18 drives the rewinding shaft 17 and the power roller 20 to rotate synchronously, rewinds the waste tape with the protective film 300, and replenishes the new tape from the unwinding assembly to between the first guide roller 2 and the second guide roller 3; Step 6. Repeat steps 2 to 5.

[0030] A rodless cylinder 8 is installed on the rear surface of the above-mentioned strip vertical plate 1, one end of a push block 9 is connected to the movable part 81 of the rodless cylinder 8, and the other end of the above-mentioned push block 9 passes through a strip through hole 91 extending left and right on the strip vertical plate 1 and is embedded in the movable plate 5.

[0031] A tensioning wheel 24 that cooperates with the belt 22 for transmission is rotatably mounted on the rear side of the mounting vertical plate 16 . The tensioning wheel 24 is movably mounted on the mounting vertical plate 16 via a mounting plate 25 having a strip hole 251 .

[0032] The first connecting pin 281 is installed on the front surface of the strip vertical plate 1 .

[0033] The damper 33 is a magnetic powder brake, which is purchased from outside and always applies a force to the support shaft in the opposite direction of its rotation during the unloading process to ensure the tension of the tape.

[0034] A third material guide wheel 10 is rotatably disposed directly below the first material guide roller 2 , and the first movable roller 6 is located between the third material guide wheel 10 and the first material guide roller 2 in the vertical direction.

[0035] A third movable roller 12 is rotatably provided at the front side of the movable plate 5 . The third movable roller 12 , which is provided at the same height as the second material guide roller 3 , is located between the first movable roller 6 and the second movable roller 7 in the left-right direction.

[0036] The above-mentioned adhesive tape 100 passes through the third guide wheel 10, the first guide roller 2, the fourth guide roller 11, the second movable roller 7, the first movable roller 6, the third movable roller 12 and the second guide roller 3 in sequence, and the non-adhesive surface of the adhesive tape 100 is in rolling contact with the outer circumferential surface of the third guide wheel 10, the first guide roller 2, the fourth guide roller 11, the second movable roller 7, the third movable roller 12 and the second guide roller 3.

[0037] The first guide roller 2, the second guide roller 3, the third guide roller 10, the fourth guide roller 11, the first movable roller 6, the second movable roller 7 and the third movable roller 12 are all mounted on the outside of a support shaft 13 and are rotatably mounted on the support shaft 13 through two bearings 14 arranged at intervals. One end of the support shaft 13 arranged perpendicular to the strip vertical plate 1 and the movable plate 5 is mounted on the strip vertical plate 1 or the movable plate 5.

[0038] The first material guide roller 2 , the second material guide roller 3 , the third material guide roller 10 , the fourth material guide roller 11 , the first movable roller 6 and the third movable roller 12 are each provided with two spaced-apart retaining rings 15 on their outer sides, and the adhesive tape 100 is located between the two retaining rings 15 .

[0039] Working principle: In the initial state, each floating block on the support plate moves radially to the outermost side under the action of the support spring, thereby protruding from the outer circumference of the support plate; When in use, the single-sided adhesive tape roll is placed on the support plate of the unwinding component. During this process, each floating block is first squeezed and radially contracts toward the support plate. After the tape roll is placed on the support plate, each floating block exerts a radially outward force on the inner wall of the tape roll under the action of the supporting spring, thereby ensuring the stable installation of the tape roll and avoiding the problem that the tape roll turns when the tape on the outer ring of the tape roll is pulled outward by the receiving component and new tape cannot be added in a timely and stable manner. After the tape roll is installed, one end of the tape located on the outer ring is pulled out, and it passes through the third material guide wheel, the first material guide roller, the fourth material guide roller, the second movable roller, the first movable roller, the third movable roller and the second material guide roller in sequence, and then is wound onto the material receiving assembly, and the tape is kept taut and the adhesive surface of the tape located between the first material guide roller and the second movable roller faces upward; When the receiving motors of the unloading assembly and the receiving assembly are both in a non-working state, the total length of the tape between the third guide wheel closest to the unloading assembly and the second guide roller closest to the receiving assembly remains unchanged during the process of the three movable rollers being driven by the movable plate to move in the left and right directions; When the movable plate is located at the leftmost end, the length of the adhesive tape between the first material guide roller and the second movable roller is the shortest, and the length of the adhesive tape between the first movable roller and the second material guide roller is the longest. At this time, the workpiece with the protective film on the lower surface is moved to the top of the second movable roller by the external transport mechanism so that the left end of the workpiece is located on the right side of the second movable roller; By driving the movable plate to move rightward, during this process, the adhesive tape between the first movable roller and the second material guide roller moves upward to between the first material guide roller and the second movable roller and is evenly adhered to the protective film on the lower surface of the workpiece under the action of the second movable roller; Then, the movable plate is driven to move to the left. During this process, the adhesive tape between the first material guide roller and the second movable roller moves downward to between the first movable roller and the second material guide roller, and the protective film is gradually torn off from the lower surface of the workpiece by the adhesive force of the adhesive tape. When the protective film on the tape between the first guide roller and the second movable roller is discarded, the receiving motor of the receiving assembly is started to reel in the waste tape with the protective film, and at the same time, the tape roll installed on the support disk is pulled to rotate and release new tape to be replenished between the third guide wheel and the second guide roller. The damper on the support shaft rotating with the support disk applies a force opposite to the rotation direction of the support shaft to ensure the tension of the tape. In this process, the receiving motor drives the receiving shaft and the movable roller to rotate. The power roller rotates synchronously, and the upper end of the rotating plate with a clamping roller installed at the lower end rotates away from the power roller under the action of the spring, thereby driving the angle roller at its lower end to squeeze the material receiving shaft, ensuring that the material belt between the power roller and the clamping roller is in close contact with the power roller. Under the action of the power roller, the waste belt moves toward the direction of the material receiving shaft and is wound onto the material receiving shaft. At the same time, the new material belt on the unwinding assembly is replenished and replenished between the third guide wheel and the second guide roller under the pull of the waste belt.

[0040] The automatic peeling method of the product protective film of the present invention realizes the positive attachment and reverse tearing of the tape by the movable roller which moves back and forth with the movable plate when the material discharge and material collection components are stationary, thereby ensuring the stability, uniformity and controllability of the rate during the tape attachment and tearing process, improving the film tearing effect, avoiding interference with the workpiece, especially the relative position between the workpieces, during the film tearing process, improving the processing efficiency and accuracy, and can also realize the stable winding of the waste tape and the supplementary feeding of the tape during the material collection process after each tearing operation; further, it is convenient for the loading, unloading and replacement of the tape roll, and can ensure the stability of the positioning of the tape roll, avoiding the situation of insufficient feeding due to the rotation of the tape roll.

[0041] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for automatically peeling off a product protective film, characterized in that: Used to tear off the protective film (300) on the lower surface of each of at least two workpieces (200) arranged in sequence from left to right, the upper surface of each of the workpieces (200) being adsorbed and matched with a vacuum adsorption plate (400), the film tearing mechanism based on the automatic peeling method of the product protective film comprises: a strip vertical plate (1) extending left and right, a first material guide roller (2) rotatably arranged on the front side of the left end of the strip vertical plate (1), a second material guide roller (3) rotatably arranged on the front side of the right end of the strip vertical plate (1), an adhesive tape (100) for bonding with the protective film (300), and a material discharge component and a material collection component respectively arranged below the strip vertical plate (1), the material collection component further comprising: a mounting vertical plate (16) connected to the strip vertical plate (1) at the upper end, a material collection shaft (17) rotatably mounted on the lower end of the mounting vertical plate (16), and a material collection motor (18) mounted on the rear side surface of the mounting vertical plate (16); A power roller (20) is sleeved on the outer side of a core shaft (19) rotatably arranged above the receiving shaft (17); one end of the core shaft (19) passes through the mounting vertical plate (16) and is connected to the output shaft of the receiving motor (18); a pulley (21) is installed on the receiving shaft (17) and the core shaft (19) and located on the rear side of the mounting vertical plate (16); the two pulleys (21) are connected by a belt (22); a rotating plate (26) is arranged on the front side of the mounting vertical plate (16); the upper end of the rotating plate (26) is connected by a pin (27) is rotatably mounted on the mounting vertical plate (16), a clamping roller (28) is rotatably mounted on the lower end of the rotating plate (26) and is arranged parallel to one side of the power roller (20), a first connecting pin (291) is arranged on the upper side of the rotating plate (26) opposite to the power roller (20), a spring (29) is connected between the first connecting pin (291) and a second connecting pin (292) arranged on the upper end surface of the rotating plate (26), so that the clamping roller (28) and the power roller (20) installed on the lower end of the rotating plate (26) are pressed against each other; A movable plate (5) movable in the left-right direction is installed on the front surface of the strip vertical plate (1) and between the first material guide roller (2) and the second material guide roller (3) via a track (41) and a slider (42); a first movable roller (6) and a second movable roller (7) are rotatably arranged on the front sides of the left and right ends of the movable plate (5), and the second movable roller (7) on the right side is higher than the first movable roller (6); The automatic peeling method of the product protective film comprises the following steps: Step 1, installing a single-sided adhesive tape roll on the unwinding component, and winding one end of the adhesive tape (100) located on the outermost circle around the first material guide roller (2), the second movable roller (7), the first movable roller (6), the second material guide roller (3) and between the clamping roller (28) and the power roller (20) of the receiving component, and then winding it on the receiving shaft (17), so that the non-adhesive surface of the adhesive tape (100) rolls with the outer circumferential surface of the first material guide roller (2), the second movable roller (7) and the second material guide roller (3), the adhesive surface of the adhesive tape (100) rolls with the outer circumferential surface of the first movable roller (6), and the adhesive surface of the adhesive tape (100) between the first material guide roller (2) and the second movable roller (7) faces upward; Step 2: placing the movable plate (5) at the leftmost side of its travel, and then moving the vacuum adsorption plate (400) adsorbing at least two workpieces (200) to above the second movable roller (7) so that the left end of the workpiece (200) on the left side of the vacuum adsorption plate (400) is on the right side of the second movable roller (7) and close to the second movable roller (7); Step 3, driving the movable plate (5) to move rightward to the rightmost side of its travel, during which the second movable roller (7) and the protective film (300) on the workpiece (200) are rolled and squeezed, so that the adhesive surface of the adhesive tape (100) transmitted from between the first movable roller (6) and the second material guide roller (3) to between the second movable roller (7) and the first material guide roller (2) as the movable plate (5) moves rightward is gradually bonded to the protective film (300) on the lower surface of each workpiece (200); Step 4: driving the movable plate (5) to move leftward to the leftmost side of its travel. During this process, as the movable plate (5) moves leftward, the adhesive tape (100) transmitted from between the second movable roller (7) and the first material guide roller (2) to between the first movable roller (6) and the second material guide roller (3) gradually tears off the protective film (300) adhered thereto; Step 5: The material collecting motor (18) drives the material collecting shaft (17) and the power roller (20) to rotate synchronously, so as to reel in the waste adhesive tape with the protective film (300) bonded thereto, and replenish the new adhesive tape from the material unwinding assembly to between the first material guide roller (2) and the second material guide roller (3); Step 6. Repeat steps 2 to 5.

2. The method for automatically peeling off a product protective film according to claim 1, characterized in that: The unloading assembly for mounting a tape roll formed by winding the tape (100) further comprises: a base (30) arranged below the left end of the strip vertical plate (1) and a support plate (31) arranged on the front side of the base (30), wherein the support plate (31) is mounted on one end of a support shaft (32) rotatably mounted on the base (30), and a damper (33) is installed on the other end of the support shaft (32) and located on the rear side of the base (30), and a plurality of There are floating blocks (34) spaced apart along the circumferential direction, and each of the floating blocks (34) which can move radially is embedded in the support plate (31). One end of each of the floating blocks (34) is connected to at least one support spring (35) extending radially along the support plate (31). The other end of the support spring (35) connected to the floating block (34) at one end is embedded in a receiving groove (36) provided on the support plate (31), so that the outer end surface of each of the floating blocks (34) is in compression contact with the inner wall of the tape roll mounted on the support plate (31).

3. The method for automatically peeling off a product protective film according to claim 2, characterized in that: The support shaft (32) is provided with two baffle plates (37) which are distributed on both sides of the support plate (31).

4. The method for automatically peeling off a product protective film according to claim 2, characterized in that: Two supporting springs (35) are connected to each of the floating blocks (34).

5. The method for automatically peeling off a product protective film according to claim 2, characterized in that: The outer surface of each floating block (34) at one end opposite to the base (30) is arranged as an inwardly inclined slope.

6. The method for automatically peeling off a product protective film according to claim 1, characterized in that: The workpiece (200) is a horizontally arranged steel plate, and the protective film (300) is a release film.

7. The film tearing mechanism according to claim 1, characterized in that: The second movable roller (7) and the clamping roller (28) are both elastic rollers.

8. The method for automatically peeling off a product protective film according to claim 1, characterized in that: A fourth material guide roller (11) having the same height as the first material guide roller (2) is rotatably arranged between the first material guide roller (2) and the second movable roller (7); when the second movable roller (7) moves to the left end of its travel along with the movable plate (5), the fourth material guide roller (11) is arranged adjacent to the second movable roller (7).

9. The method for automatically peeling off a product protective film according to claim 8, characterized in that: The second movable roller (7) is at the same height as or slightly higher than the fourth material guide roller (11), so that the adhesive surface of the adhesive tape (100) between the first material guide roller (2) and the second movable roller (7) remains horizontal or slightly inclined.

10. The method for automatically peeling off a product protective film according to claim 1, characterized in that: The material receiving rotating shaft (17) and the core shaft (19) are each rotatably mounted on the mounting vertical plate (16) via a bearing seat (23).

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