Automatic production line of silica gel pad with double-face tear handle

Abstract

The present application relates to the technical field of silica gel pad production, and provides an automatic production line for silica gel pads with double-sided tear-off handles, comprising a feeder, a die-cutting machine, a conveyor and a double-sided tear-off handle release paper attaching machine; the feeder is used to provide silica gel coating sheets; the die-cuting machine is used to die-cut the silica gel coating sheets to obtain silica gel pad semi-products, which are fed into the conveyor; the conveyor is used to transport the silica gel pad semi-products to the double-sided tear-off handle release paper attaching machine; the double-sided tear-off handle release paper attaching machine comprises a feeding and carrying device, a first tear-off handle release paper attaching device, a turnover device, a second tear-off handle release paper attaching device and a discharging and carrying device; the first tear-off handle release paper attaching device comprises a conveyor belt mechanism, a release paper tearing-off mechanism, a tear-off handle release paper attaching mechanism and a tear-off handle release paper feeding mechanism. The present application has the advantages that the release paper of the silica gel pad is automatically replaced, the production efficiency and product yield are improved, the production rhythm is improved and the turnover frequency is reduced, and automatic high-precision production is realized.

Description

Technical Field

[0001] The invention relates to the technical field of silicone pad production, and in particular to an automated production line for silicone pads with double-sided tear handles. Background Art

[0002] Silicone pads are a popular silicone product in the market. They offer a certain degree of tension, flexibility, excellent insulation, pressure resistance, high and low temperature resistance, chemical stability, environmental safety, and no odor. Food-grade silicone pads are non-toxic and odorless, insoluble in water and any solvents, and are a highly active green product.

[0003] The traditional silicone pad production process primarily involves laminating, indenting, and manually replacing the release paper. Laminating involves applying double-sided tape to the upper and lower surfaces of the silicone sheet. The double-sided tape is formed by laminating the release paper and adhesive together. Indenting involves cutting the desired overall shape of the silicone pad into the laminating product. Manually replacing the release paper involves manually removing the release paper from the indented product, then manually attaching the release paper with a tear-off tab to the double-sided adhesive on the silicone pad, resulting in a silicone pad with a double-sided tear-off tab. The portion of the release paper protruding from the silicone is the tear-off tab, and is primarily designed to enable automated production. A robotic arm grips the release paper's tear-off tab to remove the release paper, allowing the silicone pad to be installed.

[0004] Traditional silicone pad production processes require multiple material turnovers between various steps, resulting in slow production efficiency and cycle times. Due to the high product requirements, manual release paper application is often difficult and inefficient, leading to missed or incorrect applications and a high rate of defective products.

[0005] Therefore, how to automatically replace the release paper of the silicone pad to improve production efficiency and product yield is a technical problem that needs to be solved urgently in this field. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide an automated production line for silicone pads with double-sided tear handles, which can automatically replace the release paper of the silicone pads and improve production efficiency and product yield.

[0007] The present invention is achieved as follows: an automated production line for silicone pads with double-sided tear handles, comprising:

[0008] Feeder, die-cutting machine, conveyor and double-sided tear-off release paper applicator;

[0009] The feeder is used to provide a silicone coating sheet, which includes a first release paper, a first double-sided tape, silicone, a second double-sided tape, and a second release paper arranged from top to bottom. The silicone coating sheet enters the die-cutting machine;

[0010] The die-cutting machine is used to die-cut the silicone coating sheet to obtain a semi-finished silicone pad, and the semi-finished silicone pad enters the conveyor;

[0011] The conveyor is used to transport the semi-finished silicone pad to the double-sided tear-off release paper attaching machine;

[0012] The double-sided tear-off release paper attaching machine includes a loading and transporting device, a first tear-off release paper attaching device, a turning device, a second tear-off release paper attaching device and a unloading and transporting device;

[0013] The first tearing hand release paper attaching device includes a conveyor belt mechanism, a release paper tearing mechanism, a tearing hand release paper attaching mechanism and a tearing hand release paper discharging mechanism. The upper transport device is used to grab the semi-finished silicone pad and then place it on the conveyor belt mechanism. The conveyor belt mechanism passes through the release paper tearing mechanism and the tearing hand release paper attaching mechanism in sequence. The release paper tearing mechanism first tears off the first release paper on the first side of the semi-finished silicone pad. The tearing hand release paper attaching mechanism then obtains the first tearing hand release paper from the tearing hand release paper discharging mechanism and then attaches the first tearing hand release paper to the first side of the semi-finished silicone pad. The conveyor belt mechanism transports the semi-finished silicone pad with the first side attached to the flipping device.

[0014] The turning device comprises a turning frame, a turning drive shaft, a turning splint, a left feeding support wheel, a right feeding support wheel, a left discharging support wheel, a right discharging support wheel, a rotating shaft, a material moving driving shaft and a transmission line, the turning driving shaft is rotatably connected to the turning frame, one end of the turning splint is fixedly connected to the turning drive shaft, and the other end of the turning splint is provided with a silicone pad inlet and outlet, the left feeding support wheel and the right feeding support wheel are both rotatably arranged on the feeding port of the turning frame, the left discharging support wheel and the right discharging support wheel are both rotatably arranged on the discharging port of the turning frame, the left discharging support wheel and the right discharging support wheel are connected by the rotating shaft, the material moving driving shaft is rotatably connected to the turning frame, and is also connected to the rotating shaft transmission, the left feeding support wheel and the left discharging support wheel are connected by the transmission line, and the turning device is used to first turn over the silicone pad semi-finished product with the first side attached, and then transmit it to the second tearing release paper attaching device;

[0015] The second tear-off release paper attaching device has the same structure as the first tear-off release paper attaching device. The second tear-off release paper attaching device is used to first tear off the second release paper located on the second side of the semi-finished silicone pad, and then attach the second tear-off release paper to the second side of the semi-finished silicone pad to obtain a finished silicone pad. The unloading and handling device is used to take away the finished silicone pad.

[0016] Furthermore, the first tear-off release paper attaching device also includes a silicone shape recognition camera and a tear-off release paper shape recognition camera. The silicone shape recognition camera and the tear-off release paper shape recognition camera are both located above the conveyor belt mechanism and are both electrically connected to the tear-off release paper attaching mechanism.

[0017] Furthermore, the first tear-off release paper attaching device further includes a rolling mechanism, and the rolling mechanism is arranged at the discharge port of the conveyor belt.

[0018] Furthermore, the double-sided tear-off release paper attaching machine also includes a material receiving and transporting device, which is electrically connected to the material unloading and transporting device. The material unloading and transporting device transports the finished silicone pad to the entrance of the material receiving and transporting device, and the controller of the material unloading and transporting device accumulates the number of transports. When the number of transports reaches a preset threshold, the material receiving and transporting device advances one stacking area, and the number of transports is reset to zero.

[0019] Furthermore, the tear-off release paper attaching mechanism includes a mechanical arm and a pneumatic suction cup installed on the mechanical arm.

[0020] Furthermore, there are four flip clamps, and the four flip clamps are evenly spaced and arranged around the flip drive shaft.

[0021] Furthermore, the die-cutting machine includes a feeding device, a die-cutting device and a discharging device;

[0022] The feeding device includes a feeding frame, an upper pressing rod and a lower pressing rod, wherein the upper pressing rod and the lower pressing rod are both rotatably arranged on the feeding frame, and the upper pressing rod and the lower pressing rod are used to clamp and feed the silicone coating sheet;

[0023] The die-cutting device includes a mold frame and a processing mold, the mold frame includes a top seat, a lifting seat, a base and a guide column, the processing mold includes a cutting die and a support plate, the top seat is fixedly connected to the upper end of the guide column, the lifting seat is slidably connected to the guide column, the base is fixedly connected to the lower end of the guide column, the cutting die is fixedly connected to the top seat, the support plate is fixedly connected to the lifting seat, and the cutting die and the support plate are used to die-cut the silicone coating sheet;

[0024] The discharging device includes a discharging frame, a discharging roller, a tearing plate and a receiving shaft. The discharging roller is rotatably arranged on the discharging frame, the tearing plate is fixedly arranged on the discharging frame and is also located in front of the discharging roller, the receiving shaft is rotatably arranged on the discharging frame and is also located above the tearing plate. The entrance of the conveyor is located below the discharging roller, and the gap between the tearing plate and the discharging roller is used to transport the die-cut silicone coating sheet. The receiving shaft is used to wind up the scraps separated from the silicone coating sheet, and the entrance of the conveyor is used to collect the silicone pad semi-finished products separated from the silicone coating sheet.

[0025] Furthermore, the feeder includes a coating frame and a first upper coating roller, a first lower coating roller, a second upper coating roller, a second lower coating roller, a first unloading shaft, a second unloading shaft and a third unloading shaft rotatably arranged on the coating frame;

[0026] The first unwinding shaft is used to install the first adhesive tape coil, the second unwinding shaft is used to install the second adhesive tape coil, and the third unwinding shaft is used to install the silicone coil;

[0027] The second adhesive tape roll and the silicone roll are both passed through the adhesive coating gap between the second upper adhesive coating roller and the second lower adhesive coating roller, and the second adhesive tape roll is applied to the lower surface of the silicone roll to obtain a silicone coated long strip semi-finished product;

[0028] The semi-finished silicone-coated long strip and the first adhesive tape roll are both passed through the adhesive coating gap between the first upper adhesive roller and the first lower adhesive roller, and the first adhesive tape roll is applied to the upper surface of the silicone roll to obtain a finished silicone-coated long strip.

[0029] The finished silicone coated long strip material replaces the silicone coated sheet material and enters the die-cutting machine.

[0030] Compared with the background technology, the advantages and beneficial effects of the present invention are:

[0031] After the silicone coated sheet enters the die-cutting machine, a silicone pad semi-finished product is obtained, and then it enters the double-sided tear-off release paper attaching machine through a conveyor. The first side of the silicone pad semi-finished product faces upward, and the release paper on the first side is automatically torn off first, and then the release paper with the tear-off portion is automatically attached to the first side. Then, after the turning device turns it over, the second side of the silicone pad semi-finished product faces upward, and then the release paper on the second side is automatically torn off, and then the release paper with the tear-off portion is automatically attached to the second side to obtain a silicone pad finished product. The production line of the present invention automatically replaces the release paper of the silicone pad, improves production efficiency and product yield, while improving production rhythm and reducing turnover times, thereby realizing automated high-precision production. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0033] Figure 1 The figure is a schematic diagram of the layout of the automatic production line of the silicone pad with double-sided tear handles of the present invention.

[0034] Figure 2 This is a schematic diagram of the positions of the silicone coated long strip semi-finished product, the silicone coated long strip finished product, the feeding device, the die-cutting device, the discharging device, the silicone pad semi-finished product and the conveyor in an embodiment of the present invention.

[0035] Figure 3 It is a schematic structural stereogram of the die-cutting device in an embodiment of the present invention.

[0036] Figure 4 It is a schematic structural stereogram of a feeding device in an embodiment of the present invention.

[0037] Figure 5 It is a schematic structural stereogram of the discharging device in an embodiment of the present invention.

[0038] Figure 6 It is a schematic diagram of the positions of the material unloading and handling device and the material receiving and transporting device in an embodiment of the present invention.

[0039] Figure 7 This is a schematic structural diagram of the first tear-off release paper attaching device in an embodiment of the present invention. Figure 1 .

[0040] Figure 8 This is a schematic structural diagram of the first tear-off release paper attaching device in an embodiment of the present invention. Figure 2 .

[0041] Figure 9 It is a schematic three-dimensional diagram of the structure of the turning device in an embodiment of the present invention.

[0042] Figure 10 It is a schematic front view of the structure of the turning device in an embodiment of the present invention.

[0043] Figure 11 yes Figure 10 Top view of .

[0044] Figure 12 It is a schematic three-dimensional diagram of the structure of the flip splint in an embodiment of the present invention.

[0045] Figure 13 Schematic diagram of a semi-finished silicone pad die-cut from a silicone coating sheet in an embodiment of the present invention.

[0046] Figure 14 Schematic diagram of the structure of the semi-finished silicone pad in an embodiment of the present invention.

[0047] Figure 15This is a schematic three-dimensional diagram of the structure of the finished silicone pad in an embodiment of the present invention.

[0048] Reference numerals: feeder 1; coating frame 11; first upper coating roller 12; first lower coating roller 13; second upper coating roller 14; second lower coating roller 15; first unloading shaft 16; second unloading shaft 17; third unloading shaft 18;

[0049] Die-cutting machine 2; feeding device 21; feeding frame 211; upper pressing rod 212; lower pressing rod 213; die-cutting device 22; die frame 221; top seat 2211; lifting seat 2212; base 2213; guide column 2214; cutting die 222; support plate 223; discharging device 23; discharging frame 231; discharging roller 232; tearing plate 233; receiving shaft 234;

[0050] Transporter 3;

[0051] Double-sided tear-hand release paper attaching machine 4; feeding and conveying device 41; first tear-hand release paper attaching device 42; conveyor belt mechanism 421; release paper tearing mechanism 422; tear-hand release paper attaching mechanism 423; tear-hand release paper unloading mechanism 424; silicone rubber shape recognition camera 425; tear-hand release paper shape recognition camera 426; rolling mechanism 427; flipping device 43; flip frame 431; flip drive shaft 432; flip clamp 433; silicone rubber pad inlet and outlet 4331; left feed support wheel 434; right feed support wheel 435; left discharge support wheel 436; right discharge support wheel 437; rotating shaft 438; material transfer drive shaft 439; transmission line 4310; flip drive motor 4311; material transfer drive motor 4312; second tear-hand release paper attaching device 44; unloading and conveying device 45; material receiving and transporting device 46;

[0052] Silicone coating sheet 5; semi-finished silicone pad 51; finished silicone pad 52; first release paper 53; first double-sided tape 54; silicone 55; second double-sided tape 56; second release paper 57; first tear-off tab release paper 58; tear-off tab 581; second tear-off tab release paper 59; semi-finished silicone coating strip 510; finished silicone coating strip 511. DETAILED DESCRIPTION

[0053] The embodiment of the present invention provides an automated production line for silicone pads with double-sided tear tabs, which overcomes the disadvantage of manual replacement of release paper in the background art, realizes automatic replacement of the release paper of the silicone pad, improves production efficiency and product yield, and at the same time increases production rhythm and reduces turnover times, thereby achieving the technical effect of automated high-precision production.

[0054] The overall idea of ​​the technical solution of the embodiment of the present invention is as follows:

[0055] The silicone covering sheet enters the die-cutting machine from the feeder. The die-cutting machine dies the silicone covering sheet once, and the silicone covering sheet is translated once, thereby die-cutting multiple silicone pad semi-finished products from the silicone covering sheet. The release paper of the silicone pad semi-finished product has no part protruding from the silicone, that is, the silicone pad semi-finished product has double-sided tape but the release paper is not tearable. The silicone pad semi-finished product passes through a conveyor and enters a double-sided tear-off release paper attaching machine. In the first tear-off release paper attaching device, the first side of the silicone pad semi-finished product faces upward, and the release paper tearing mechanism first tears off the first release paper on the first side of the silicone pad semi-finished product, and then the tear-off release paper attaching mechanism obtains the first tear-off release paper from the tear-off release paper discharging mechanism, and then attaches the first tear-off release paper to the first side of the silicone pad semi-finished product. The tear-off release paper is the release paper with a tear-off portion; then the flipping device flips the silicone pad semi-finished product with the first side attached, so that the second side of the silicone pad semi-finished product faces upward, and the second tear-off release paper attaching device automatically tears off the second release paper on the second side, and then automatically attaches the second tear-off release paper to the second side to obtain a finished silicone pad. Finally, the unloading and conveying device transports the finished silicone pad to the material receiving and conveying device.

[0056] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0057] See Figures 1 to 15 , a preferred embodiment of the present invention.

[0058] An automatic production line for silicone pads with double-sided tear handles, comprising:

[0059] Feeder 1, die-cutting machine 2, conveyor 3 and double-sided tear-off release paper attaching machine 4;

[0060] The feeder 1 is used to provide a silicone coating sheet 5, which includes a first release paper 53, a first double-sided tape 54, silicone 55, a second double-sided tape 56, and a second release paper 57 arranged from top to bottom. The silicone coating sheet 5 enters the die-cutting machine 2;

[0061] The die-cutting machine 2 is used to die-cut the silicone coating sheet 5 to obtain a silicone pad semi-finished product 51, and the silicone pad semi-finished product 51 enters the conveyor 3;

[0062] The conveyor 3 is used to transport the semi-finished silicone pad 51 to the double-sided tear-off release paper attaching machine 4;

[0063] The double-sided tear-off release paper attaching machine 4 includes a loading and transporting device 41, a first tear-off release paper attaching device 42, a turning device 43, a second tear-off release paper attaching device 44 and a unloading and transporting device 45;

[0064] The first tearing hand release paper attaching device 42 includes a conveyor belt mechanism 421, a release paper tearing mechanism 422, a tearing hand release paper attaching mechanism 423 and a tearing hand release paper feeding mechanism 424. The upper transport device is used to grab the silicone pad semi-finished product 51 and then place it on the conveyor belt mechanism 421. The conveyor belt mechanism 421 passes through the release paper tearing mechanism 422 and the tearing hand release paper attaching mechanism 423 in sequence. The release paper tearing mechanism 422 first tears off the first release paper 53 on the first side of the silicone pad semi-finished product 51. The tearing hand release paper attaching mechanism 423 then obtains the first tearing hand release paper 58 from the tearing hand release paper feeding mechanism 424 and then attaches the first tearing hand release paper 58 to the first side of the silicone pad semi-finished product 51. The conveyor belt mechanism 421 conveys the silicone pad semi-finished product 51 with the first side attached to the flipping device 43.

[0065] The flip device 43 includes a flip frame 431, a flip drive shaft 432, a flip clamp 433, a left feed support wheel 434, a right feed support wheel 435, a left discharge support wheel 436, a right discharge support wheel 437, a rotating shaft 438, a material transfer drive shaft 439 and a transmission line 4310. The flip drive shaft 432 is rotatably connected to the flip frame 431, one end of the flip clamp 433 is fixedly connected to the flip drive shaft 432, and the other end of the flip clamp 433 has a silicone pad inlet and outlet 4331. The left feed support wheel 434 and the right feed support wheel 435 are both rotatably arranged on the flip frame 43 1, the left discharging support wheel 436 and the right discharging support wheel 437 are both rotatably arranged at the discharging port of the flip frame 431, the left discharging support wheel 436 and the right discharging support wheel 437 are connected by the rotating shaft 438, the material moving drive shaft 439 is rotatably connected to the flip frame 431, and is also transmission-connected to the rotating shaft 438, the left inlet support wheel 434 and the left discharging support wheel 436 are connected by the transmission line 4310, and the flipping device 43 is used to first flip the silicone pad semi-finished product 51 that has completed the first side attachment, and then transfer it to the second tear-off release paper attaching device 44;

[0066] The second tear-off release paper attaching device 44 has the same structure as the first tear-off release paper attaching device 42. The second tear-off release paper attaching device 44 is used to first tear off the second release paper 57 located on the second side of the silicone pad semi-finished product 51, and then attach the second tear-off release paper 59 to the second side of the silicone pad semi-finished product 51 to obtain the silicone pad finished product 52. The unloading and handling device 45 is used to take away the silicone pad finished product 52.

[0067] The beneficial effect of the above technical solution is that after the silicone coating sheet 5 enters the die-cutting machine 2, a silicone pad semi-finished product 51 is obtained, and then enters the double-sided tear-off release paper attaching machine 4 through the conveyor 3. The first side of the silicone pad semi-finished product 51 faces upward, and the release paper on the first side is automatically torn off first, and then the release paper with the tear-off part 581 is automatically attached to the first side. Then, after being flipped by the flipping device 43, the second side of the silicone pad semi-finished product 51 faces upward, and then the release paper on the second side is automatically torn off, and then the release paper with the tear-off part is automatically attached to the second side to obtain a silicone pad finished product 52; the production line of the present invention automatically replaces the release paper of the silicone pad, improves production efficiency and product yield, while improving production rhythm and reducing turnover times, realizing automated high-precision production.

[0068] The loading and handling device 41, the unloading and handling device 45, the release paper tearing mechanism 422, and the tearing handle release paper attaching mechanism 423 all include conventional robotic arms for accurately and flexibly gripping and handling items. The operating principles of the release paper tearing mechanism 422 and the tearing handle release paper attaching mechanism 423 are described in the invention patent document "Slicing and Labeling Apparatus and Preparation Method for Modular Buffer Insulation Cover" (granted publication number CN116691009B). This invention patent document describes the following: After the release paper on the semi-finished cushioning material is removed by the labeling mechanism, the turntable is rotated, and the release paper with the U-shaped tearing handle is attached to the semi-finished cushioning material by the labeling machine.

[0069] The conveyor 3 is preferably a belt conveyor, and a position sensor for detecting the silicone pad semi-finished product 51 is provided at the outlet of the belt conveyor. The position sensor sends a signal to the loading and conveying device 41, and the loading and conveying device 41 conveys the silicone pad semi-finished product 51 to the entrance of the first tear-off release paper attaching device 42.

[0070] The material transfer drive shaft 439 of the turning device 43 simultaneously drives the left material feeding support wheel 434 and the right material feeding support wheel 435 , and cooperates with the turning clamp 433 to allow the silicone pad semi-finished product 51 waiting to be turned to enter and exit the turning device 43 in an orderly manner. The silicone pad semi-finished product 51 waiting to be flipped enters the left feed support wheel 434 and the right feed support wheel 435 of the flipping device 43 from the outlet of the conveyor belt mechanism 421 of the first tearing hand release paper attaching device 42, and then enters the silicone pad entrance and exit 4331 of the flipping splint 433. The flipping splint 433 performs a flipping action to flip the silicone pad semi-finished product 51 from the position of the left feed support wheel 434 and the right feed support wheel 435 to the position of the left discharge support wheel 436 and the right discharge support wheel 437, realizing a 180° flip; finally, the left discharge support wheel 436 and the right discharge support wheel 437 are started to send the flipped silicone pad semi-finished product 51 to the entrance of the conveyor belt mechanism of the second tearing hand release paper attaching device 44.

[0071] The first tear-hand release paper attaching device 42 also includes a silicone pad shape recognition camera 425 and a tear-hand release paper shape recognition camera 426. Both the silicone pad shape recognition camera 425 and the tear-hand release paper shape recognition camera 426 are located above the conveyor belt mechanism and are electrically connected to the tear-hand release paper attaching mechanism 423. This technical solution has the beneficial effect of allowing the silicone pad shape recognition camera 425 to take a photo before attaching the release paper with the tear-hand portion to identify the overall size and position of the silicone pad. The tear-hand release paper shape recognition camera 426 then takes a photo to identify the size and position of the release paper. The two photos are then compared for size and position, and the tear-hand release paper attaching mechanism 423 then accurately attaches the release paper with the tear-hand portion to the silicone pad.

[0072] The first tear-off release paper attaching device 42 further includes a rolling mechanism 427, which is disposed at the outlet of the conveyor belt 421. This technical solution advantageously allows the first tear-off release paper 58 to adhere more tightly to the silicone pad semi-finished product 51 after being attached to the semi-finished silicone pad 51 by the rollers of the rolling mechanism 427.

[0073] The double-sided tear-off release paper attaching machine 4 also includes a material receiving and transporting device 46, which is electrically connected to the material unloading and transporting device 45. The material unloading and transporting device 45 transports the finished silicone pad 52 to the entrance of the material receiving and transporting device 46, and the controller of the material unloading and transporting device 45 accumulates the number of transports. When the number of transports reaches a preset number threshold, the material receiving and transporting device 46 advances to a stacking area, and the number of transports is reset. The beneficial effect of this technical solution is that the finished silicone pads 52 are stacked on the material receiving and transporting device 46, which is convenient for transport and counting. The preset number threshold is one hundred times, that is, the finished silicone pads 52 are stacked every one hundred pieces on the material receiving and transporting device 46. There is a gap between the two stacking areas.

[0074] The tear-off liner attachment mechanism 423 includes a robotic arm and a pneumatic suction cup mounted thereon. The pneumatic suction cup is used to suck the release paper with the tear-off handle from the tear-off liner discharge mechanism 424. The release paper with the tear-off handle can be in sheet form or rolled into the tear-off liner discharge mechanism 424. The release papers on the roll are arranged one by one, with the distance between each two release papers being the same, thus ensuring that the release paper is discharged from the same position each time.

[0075] There are four flip clamps 433, and the four flip clamps 433 are evenly spaced around the flip drive shaft 432. The flip drive shaft 432 rotates the flip clamps 433 90 degrees each time.

[0076] The flipping device 43 also includes a flipping drive motor 4311 and a material transfer drive motor 4312. The flipping drive motor 4311 is fixedly arranged on the flipping frame 431, and the output shaft of the flipping drive motor 4311 is connected to the flipping drive shaft 432 through a first coupling. The material transfer drive motor 4312 is fixedly arranged on the flipping frame 431, and the output shaft of the material transfer drive motor 4312 is connected to the material transfer drive shaft 439 through a second coupling.

[0077] The silicone pad semi-finished product 51, which has been attached to its first side, is conveyed to the flipping device 43. It passes over the left infeed support wheel 434 and the right infeed support wheel 435 before entering the silicone pad exit / entry 4331 of the flipping clamp 433 and then stops. The flipping clamp 433 flips the silicone pad semi-finished product 51, which is then turned 180° and lands on the left and right outfeed support wheels 436 and 437. The left and right outfeed support wheels 436 and 437 are then activated to transport the flipped silicone pad semi-finished product 51 from the flipping clamp 433 and into the second tear-off release paper attaching device 44.

[0078] The die-cutting machine 2 includes a feeding device 21, a die-cutting device 22 and a discharging device 23;

[0079] The feeding device 21 includes a feeding frame 211, an upper pressing rod 212 and a lower pressing rod 213. The upper pressing rod 212 and the lower pressing rod 213 are both rotatably arranged on the feeding frame 211. The upper pressing rod 212 and the lower pressing rod 213 are used to clamp and feed the silicone coating sheet 5;

[0080] The die-cutting device 22 includes a mold frame 221 and a processing mold. The mold frame 221 includes a top seat 2211, a lifting seat 2212, a base 2213 and a guide column 2214. The processing mold includes a cutting die 222 and a support plate 223. The top seat 2211 is fixedly connected to the upper end of the guide column 2214, the lifting seat 2212 is slidably connected to the guide column 2214, the base 2213 is fixedly connected to the lower end of the guide column 2214, the cutting die 222 is fixedly connected to the top seat 2211, and the support plate 223 is fixedly connected to the lifting seat 2212. The cutting die 222 and the support plate 223 are used for die-cutting the silicone coating sheet 5;

[0081] The discharging device 23 includes a discharging frame 231, a discharging roller 232, a tearing plate 233 and a receiving shaft 234. The discharging roller 232 is rotatably set on the discharging frame 231, and the tearing plate 233 is fixedly set on the discharging frame 231 and is also located in front of the discharging roller 232. The receiving shaft 234 is rotatably set on the discharging frame 231 and is also located above the tearing plate 233. The entrance of the conveyor 3 is located below the discharging roller 232. The gap between the tearing plate 233 and the discharging roller 232 is used to transport the silicone coating sheet 5 after die-cutting. The receiving shaft 234 is used to roll up the scraps separated from the silicone coating sheet 5. The entrance of the conveyor 3 is used to collect the silicone pad semi-finished product 51 separated from the silicone coating sheet 5. The beneficial effects of this technical solution are that the upper and lower pressing rods 212 and 213 ensure accurate material feeding; the lifting base 2212 drives the support plate 223 and the cutting die 222 to close, thereby die-cutting the silicone coating sheet 5. The operation of the lifting base 2212 is controlled by a conventional lifting drive device; the die-cut silicone coating sheet 5 passes through the gap between the tear plate 233 and the discharge roller 232, and the scraps and the silicone pad semi-finished product 51 are transported in different directions. The discharge roller 232 then removes the silicone pad semi-finished product 51 from the silicone coating sheet 5, and the scraps are reeled by the receiving shaft 234, and the silicone pad semi-finished product 51 falls to the entrance of the conveyor 3.

[0082] The cutting die 222 is used to die-cut the silicone covering sheet 5. The cutting die 222 is aligned with the middle position of the silicone covering sheet 5. Due to the elastic characteristics of silicone, the silicone pad semi-finished product 51 obtained by die-cutting will also move with the silicone covering sheet 5. Finally, the silicone pad semi-finished product 51 is separated from the silicone covering sheet 5 by the discharging device 23.

[0083] The feeder 1 includes a coating frame 11 and a first upper coating roller 12, a first lower coating roller 13, a second upper coating roller 14, a second lower coating roller 15, a first unloading shaft 16, a second unloading shaft 17 and a third unloading shaft 18 rotatably arranged on the coating frame 11;

[0084] The first unloading shaft 16 is used to install the first adhesive tape coil, the second unloading shaft 17 is used to install the second adhesive tape coil, and the third unloading shaft 18 is used to install the silicone coil;

[0085] The second adhesive tape roll and the silicone roll are passed through the adhesive gap between the second upper adhesive roller 14 and the second lower adhesive roller 15, and the second adhesive tape roll is applied to the lower surface of the silicone roll to obtain a silicone-coated long strip semi-finished product 510.

[0086] The semi-finished silicone coated long strip material 510 and the first adhesive tape roll are passed through the adhesive coating gap between the first upper adhesive coating roller 12 and the first lower adhesive coating roller 13, and the first adhesive tape roll is applied to the upper surface of the silicone coil to obtain a silicone coated long strip material finished product 511;

[0087] The finished silicone-coated long strip 511 replaces the silicone-coated sheet 5 and enters the die-cutting machine 2. This technical solution has the beneficial effect of ensuring that the silicone-coated long strip meets the machine's continuous operation requirements. The first adhesive tape roll, the second adhesive tape roll, and the silicone roll are continuously discharged, passing through the upper and lower rubber rollers to obtain the silicone-coated long strip. The silicone-coated long strip continuously enters the die-cutting machine 2, thereby continuously producing the silicone pad semi-finished product 51. In comparison, the silicone-coated sheet 5 is relatively short, requiring constant removal and refeeding to the die-cutting machine 2. This results in a low efficiency in die-cutting the silicone pad semi-finished product 51 using the silicone-coated sheet 5.

[0088] The working method of the present invention is as follows: the structure of the finished silicone pad with double-sided tear handle 52 is arranged in order from top to bottom: first tear handle release paper 58, first double-sided adhesive 54, silicone 55, second double-sided adhesive 56, and second tear handle release paper 59. The tear handle release paper is the release paper with the tear handle portion 581. The function of the feeder 1 as a coating machine is to attach a layer of double-sided tape to both the upper and lower surfaces of the silicone 55, and then to the die-cutting machine 2 for die-cutting. After the operation of the knife die 222, the overall shape of the required silicone is cut out. The resulting silicone pad semi-finished product 51 is transported by the conveyor 3 to the double-sided tearing hand release paper attaching machine 4 for attaching release paper. The mechanical arm of the tearing hand release paper attaching mechanism 423 attaches the release paper with the tearing hand 581 to the first side, flips 180 degrees, and then attaches the release paper with the tearing hand to the second side to obtain the silicone pad finished product 52. Finally, the silicone pad finished product 52 is placed by the unloading and conveying device 45 on the material receiving and conveying device 46, and each hundred silicone pad finished products 52 are stacked. The present invention realizes automated production, greatly improves production efficiency, improves the yield rate of silicone pads, and improves product quality and consistency.

[0089] Although the specific embodiments of the present invention are described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An automated production line for silicone pads with double-sided tear handles, characterized in that: include: Feeder, die-cutting machine, conveyor and double-sided tear-off release paper applicator; The feeder is used to provide a silicone coating sheet, which includes a first release paper, a first double-sided tape, silicone, a second double-sided tape, and a second release paper arranged from top to bottom. The silicone coating sheet enters the die-cutting machine; The die-cutting machine is used to die-cut the silicone coating sheet to obtain a semi-finished silicone pad, and the semi-finished silicone pad enters the conveyor; The conveyor is used to transport the semi-finished silicone pad to the double-sided tear-off release paper attaching machine; The double-sided tear-off release paper attaching machine includes a loading and transporting device, a first tear-off release paper attaching device, a turning device, a second tear-off release paper attaching device and a unloading and transporting device; The first tearing hand release paper attaching device includes a conveyor belt mechanism, a release paper tearing mechanism, a tearing hand release paper attaching mechanism and a tearing hand release paper discharging mechanism. The loading and transporting device is used to grab the semi-finished silicone pad and then place it on the conveyor belt mechanism. The conveyor belt mechanism passes through the release paper tearing mechanism and the tearing hand release paper attaching mechanism in sequence. The release paper tearing mechanism first tears off the first release paper on the first side of the semi-finished silicone pad. The tearing hand release paper attaching mechanism then obtains the first tearing hand release paper from the tearing hand release paper discharging mechanism and then attaches the first tearing hand release paper to the first side of the semi-finished silicone pad. The conveyor belt mechanism conveys the semi-finished silicone pad with the first side attached to the flipping device. The turning device comprises a turning frame, a turning drive shaft, a turning splint, a left feeding support wheel, a right feeding support wheel, a left discharging support wheel, a right discharging support wheel, a rotating shaft, a material moving driving shaft and a transmission line, the turning driving shaft is rotatably connected to the turning frame, one end of the turning splint is fixedly connected to the turning drive shaft, and the other end of the turning splint is provided with a silicone pad inlet and outlet, the left feeding support wheel and the right feeding support wheel are both rotatably arranged on the feeding port of the turning frame, the left discharging support wheel and the right discharging support wheel are both rotatably arranged on the discharging port of the turning frame, the left discharging support wheel and the right discharging support wheel are connected by the rotating shaft, the material moving driving shaft is rotatably connected to the turning frame, and is also connected to the rotating shaft transmission, the left feeding support wheel and the left discharging support wheel are connected by the transmission line, and the turning device is used to first turn over the silicone pad semi-finished product with the first side attached, and then transmit it to the second tearing release paper attaching device; The second tear-off release paper attaching device has the same structure as the first tear-off release paper attaching device. The second tear-off release paper attaching device is used to first tear off the second release paper located on the second side of the semi-finished silicone pad, and then attach the second tear-off release paper to the second side of the semi-finished silicone pad to obtain a finished silicone pad. The unloading and handling device is used to take away the finished silicone pad.

2. The automatic production line of a silicone pad with double-sided tear handle according to claim 1, characterized in that: The first tear-off release paper attaching device also includes a silicone shape recognition camera and a tear-off release paper shape recognition camera. The silicone shape recognition camera and the tear-off release paper shape recognition camera are both located above the conveyor belt mechanism and are electrically connected to the tear-off release paper attaching mechanism.

3. The automatic production line of a silicone pad with double-sided tear handle according to claim 1, characterized in that: The first tear-off release paper attaching device further includes a rolling mechanism, and the rolling mechanism is arranged at the discharge port of the conveyor belt.

4. The automatic production line of a silicone pad with double-sided tear handle according to claim 1, characterized in that: The double-sided tear-off release paper attaching machine also includes a material receiving and transporting device, which is electrically connected to the material unloading and transporting device. The material unloading and transporting device transports the finished silicone pad to the entrance of the material receiving and transporting device, and the controller of the material unloading and transporting device accumulates the number of transports. When the number of transports reaches a preset threshold, the material receiving and transporting device advances to a stacking area, and the number of transports is reset to zero.

5. The automatic production line of a silicone pad with double-sided tear handle according to claim 1, characterized in that: There are four turning clamps, and the four turning clamps are evenly spaced and arranged around the turning drive shaft.

6. The automatic production line of a silicone pad with double-sided tear handle according to claim 1, characterized in that: The die-cutting machine includes a feeding device, a die-cutting device and a discharging device; The feeding device includes a feeding frame, an upper pressing rod and a lower pressing rod, wherein the upper pressing rod and the lower pressing rod are both rotatably arranged on the feeding frame, and the upper pressing rod and the lower pressing rod are used to clamp and feed the silicone coating sheet; The die-cutting device includes a mold frame and a processing mold, the mold frame includes a top seat, a lifting seat, a base and a guide column, the processing mold includes a cutting die and a support plate, the top seat is fixedly connected to the upper end of the guide column, the lifting seat is slidably connected to the guide column, the base is fixedly connected to the lower end of the guide column, the cutting die is fixedly connected to the top seat, the support plate is fixedly connected to the lifting seat, and the cutting die and the support plate are used to die-cut the silicone coating sheet; The discharging device includes a discharging frame, a discharging roller, a tearing plate and a receiving shaft. The discharging roller is rotatably arranged on the discharging frame, the tearing plate is fixedly arranged on the discharging frame and is also located in front of the discharging roller, the receiving shaft is rotatably arranged on the discharging frame and is also located above the tearing plate. The entrance of the conveyor is located below the discharging roller, and the gap between the tearing plate and the discharging roller is used to transport the die-cut silicone coating sheet. The receiving shaft is used to wind up the scraps separated from the silicone coating sheet, and the entrance of the conveyor is used to collect the silicone pad semi-finished products separated from the silicone coating sheet.

7. The automatic production line of a silicone pad with double-sided tear handle according to claim 6, characterized in that: The feeder includes a coating frame and a first upper coating roller, a first lower coating roller, a second upper coating roller, a second lower coating roller, a first unloading shaft, a second unloading shaft and a third unloading shaft rotatably arranged on the coating frame; The first unloading shaft is used to install the first double-sided tape roll, the second unloading shaft is used to install the second double-sided tape roll, and the third unloading shaft is used to install the silicone roll; The second double-sided adhesive tape roll and the silicone rubber roll are both passed through the adhesive coating gap between the second upper adhesive coating roller and the second lower adhesive coating roller, and the second double-sided adhesive tape roll is applied to the lower surface of the silicone rubber roll to obtain a semi-finished silicone rubber coated long strip; The semi-finished silicone-coated long strip and the first double-sided adhesive tape roll are both passed through the adhesive coating gap between the first upper adhesive roller and the first lower adhesive roller, and the first double-sided adhesive tape roll is applied to the upper surface of the silicone roll to obtain a finished silicone-coated long strip. The finished silicone coated long strip material replaces the silicone coated sheet material and enters the die-cutting machine.

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