A back adhesive winding device

Abstract

The present application relates to the technical field of back adhesive, and discloses a winding device for back adhesive, which comprises a support, a rotating shaft is arranged on the support, a winding drum for winding back adhesive is arranged on the rotating shaft, the rotating shaft drives the winding drum to rotate to wind the back adhesive into a back adhesive roll, a rotating plate with a cutting knife installed at one end is also arranged on the support, a pulling plate is arranged on the rotating plate and abuts against the outer surface of the back adhesive roll, and the outer surface of the back adhesive roll extrudes the pulling plate to generate friction force as the diameter of the back adhesive roll continuously increases, so that the rotating back adhesive roll drives the cutting knife to cut the back adhesive. The present application does not need to additionally arrange a driving mechanism for driving the cutting knife to move, but only needs to utilize the rotating force of the back adhesive roll to make the cutting knife cut the back adhesive, so that the production cost of the equipment can be saved, and the cutting knife can automatically cut the back adhesive when the diameter of the back adhesive roll reaches a certain value, so that the operator does not need to control the cutting time, thereby reducing the work burden.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of back adhesive, in particular to a back adhesive winding device. BACKGROUND

[0002] The production process of back adhesive is through the back adhesive machine, and a layer of glue layer and release paper layer (the release paper layer is attached to the bottom of the glue layer to prevent the glue layer from adhering to the ash layer and losing the paste force, and the release paper layer can be torn off when used) are sequentially attached to the back of the products such as stickers and posters, so as to realize the production of back adhesive. The finished back adhesive product needs to be wound by a winding device.

[0003] For example, the Chinese invention patent with the application number CN201610899852.8 and the publication number CN106477368B, named "automatic roll winding and roll changing and tape connecting device", discloses that "two motor mounting brackets are arranged on the back surface of the mounting plate, a motor is arranged on the motor mounting bracket, the output end of the motor is connected with a driven wheel, the driven wheel is connected with a gas expansion shaft, the gas expansion shaft penetrates through the mounting plate and the front end is located on the front surface of the mounting plate, the gas expansion shaft is detachably connected with an empty roll barrel with double-sided adhesive on the inner ring, two tape pressing mechanisms are arranged on the front surface of the mounting plate, a gas cylinder and a linear bearing are arranged on the tape pressing mechanism, the output end of the gas cylinder is provided with a tape pressing wheel mounting bracket, the tape pressing wheel mounting bracket is provided with a tape pressing wheel and a cutter gas cylinder, and the output end of the cutter gas cylinder is provided with a cutter". In use, first, the empty roll barrel is installed on the left gas expansion shaft, and the material tape to be wound is overlapped on the left empty roll barrel. The left motor is started to wind through the PLC. At the same time of winding, the empty roll barrel is installed on the right gas expansion shaft. When the winding amount on the left empty roll barrel approaches full load, the right motor is started, and the left gas cylinder is operated to move the material tape to the right. When the material tape is bonded to the right empty roll barrel coated with double-sided adhesive, the left motor is stopped, and the cutter is cut off by the cutter gas cylinder. The material tape will be wound on the right empty roll barrel. Then, the full load empty roll barrel is taken off, and a new empty roll barrel is installed. In this way, the winding process can be continuous without interruption, and the efficiency is improved.

[0004] The automatic roll winding and roll changing and tape connecting device provided by the above-mentioned invention patent can continuously wind the material tape without interruption through the cooperation of the two gas expansion shafts. However, the disadvantages are that when the material tape in the winding process is cut off, the cutter gas cylinder needs to be started to drive the cutter to move towards the material tape to achieve cutting. This not only requires the operator to timely control the starting time of the cutter gas cylinder, increasing the workload of the operator, but also needs to separately increase the cutter gas cylinder, resulting in the increase of the production cost of the equipment. SUMMARY

[0005] The purpose of the present application is to provide a back adhesive winding device to solve the above-mentioned problems in the prior art.

[0006] In order to achieve the above object, the present application provides the following technical scheme: a back adhesive winding device, comprising a support, a rotating shaft is rotatably arranged on the support, a winding drum for winding the back adhesive is sleeved on the rotating shaft, the rotating shaft drives the winding drum to rotate to wind the back adhesive to form a back adhesive roll, a rotating plate with a cutting knife mounted at one end is also rotatably arranged on the support, a pull plate is arranged on the rotating plate and abuts against the outer surface of the back adhesive roll, as the diameter of the back adhesive roll increases, the outer surface of the back adhesive roll is pressed to generate friction with the pull plate to drive the cutting knife in rotation to cut the back adhesive.

[0007] The back adhesive winding device described above, the support comprises a bottom plate, two support plates are arranged opposite on the bottom plate, the rotating shaft is rotatably arranged on the two support plates, and the back adhesive roll is located between the two support plates.

[0008] The back adhesive winding device described above, the support further comprises a suspension frame located above the back adhesive roll, the suspension frame is fixedly connected with the bottom plate through a stand column, and the rotating plate is rotatably arranged on the suspension frame.

[0009] The back adhesive winding device described above, the suspension frame comprises two arc-shaped plates arranged opposite, the two arc-shaped plates are fixedly connected through a flat plate, and arc-shaped sliding channels are symmetrically opened on opposite sides of the two arc-shaped plates, the rotating plate is arc-shaped and matched with the arc-shaped sliding channels, the front side and the rear side of the rotating plate are slidably arranged in the two arc-shaped sliding channels one by one, and the arc centers of the arc-shaped sliding channels are located on the axis of the rotating shaft.

[0010] The back adhesive winding device described above, a guide rail is fixedly installed on the bottom plate, a sliding plate is fixedly installed at the bottom of each of the two support plates, the two sliding plates are slidably arranged in the guide rail, a plurality of screws are screwed on each sliding plate, and a plurality of screw holes corresponding to the plurality of screws are formed in the guide rail.

[0011] The back adhesive winding device described above, an arc-shaped sliding groove is formed at one end of the rotating plate, an arc-shaped sliding plate is slidably inserted into the arc-shaped sliding groove, and an arc-shaped compression spring is connected between the arc-shaped sliding plate and the arc-shaped sliding groove, and the cutting knife is detachably mounted on the arc-shaped sliding plate.

[0012] The back adhesive winding device described above, the support comprises a pad fixedly arranged on the bottom plate, the pad abuts against the cutting knife, and the back adhesive is located between the pad and the cutting knife so that the pad abuts against the cutting knife during the cutting of the back adhesive by the cutting knife.

[0013] The back adhesive winding device, the support includes two groups of foot plates fixedly arranged on the bottom plate, an arc-shaped guide rod is fixedly installed on each group of foot plates, the two arc-shaped guide rods are slidably inserted with the rotating plate, a tension spring is sleeved on each arc-shaped guide rod, one end of the tension spring is fixedly connected with the foot plate, and the other end is fixedly connected with the right end surface of the rotating plate.

[0014] The back adhesive winding device, the inner side surface of the rotating plate is fixedly installed with a sleeve box with an open bottom, the pulling plate is slidably arranged in the sleeve box, the bottom of the pulling plate protrudes from the rear of the sleeve box and abuts against the outer surface of the back adhesive roll, and an avoidance compression spring is connected between the pulling plate and the inner wall of the sleeve box.

[0015] The back adhesive winding device, the rotating plate is provided with a shaft body, the shaft body is sleeved with a fixedly connected adhesive tape roll and a fixed disc, the suspension includes an arc-shaped limiting rod slidably inserted with the fixed disc so that the fixed disc cannot rotate, the rotating plate is provided with a through hole, the adhesive tape on the adhesive tape roll passes through the through hole and is located upstream of the pulling plate, the bottom height of the pulling plate is lower than the bottom height of the adhesive tape, the adhesive tape is adhesively connected with the outer surface of the back adhesive roll, and the adhesive tape roll in rotation drives the rotating plate to rotate based on the adhesive force between the adhesive tape and the outer surface of the back adhesive roll.

[0016] Beneficial effects: in the above technical scheme, the back adhesive winding device provided by the application is provided with a rotating plate with a cutting knife on the support, and a pulling plate abutting against the outer surface of the back adhesive roll is installed on the rotating plate, so that as the roll continuously winds the back adhesive, the diameter of the back adhesive roll is continuously increased, so that the vertical distance between the outer surface of the back adhesive roll and the pulling plate is continuously reduced until the outer surface of the back adhesive roll abuts against and presses the pulling plate. When the outer surface of the back adhesive roll presses the pulling plate, friction is generated, and the friction increases with the increase of the pressing force until the rotating resistance of the rotating plate is overcome. At this time, the rotating back adhesive roll can drive the rotating plate to rotate through the pulling plate. The rotation of the rotating plate drives the cutting knife to rotate towards the back adhesive so that the cutting knife cuts the back adhesive. Compared with the prior art, the application does not need to additionally provide a driving mechanism (such as a cutting knife cylinder in the prior art) to drive the cutting knife to move. Only the rotating force of the back adhesive roll can drive the cutting knife to cut the back adhesive, thereby saving the production cost of the equipment. At the same time, when the diameter of the back adhesive roll reaches a certain value, the cutting knife can automatically cut the back adhesive, and the operator does not need to control the cutting time, thereby reducing the work burden, and effectively solving the shortcomings in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0018] Figure 1 The first perspective view of the structure of the back adhesive winding device provided by the embodiment of the present application is shown in the figure;

[0019] Figure 2 The enlarged structure view of part A in the figure is provided by the embodiment of the present application; Figure 1

[0020] Figure 3 The second perspective view of the structure of the back adhesive winding device provided by the embodiment of the present application is shown in the figure;

[0021] Figure 4 The connection structure between the arc-shaped sliding plate, the cutting knife, the rotating plate, the pulling plate, the fixing disc, the first roller and the second roller provided by the embodiment of the present application is shown in the figure;

[0022] Figure 5 The structure of the suspension provided by the embodiment of the present application is shown in the figure;

[0023] Figure 6 The cross-sectional structure of the winding device when the back adhesive roll is not in abutment with the pulling plate provided by the embodiment of the present application is shown in the figure;

[0024] Figure 7 The enlarged structure view of part B in the figure is provided by the embodiment of the present application; Figure 6

[0025] Figure 8 The enlarged structure view of part C in the figure is provided by the embodiment of the present application; Figure 6

[0026] Figure 9 The cross-sectional structure of the winding device when the adhesive tape is squeezed between the pulling plate and the back adhesive roll provided by the embodiment of the present application is shown in the figure;

[0027] Figure 10 The enlarged structure view of part D in the figure is provided by the embodiment of the present application; Figure 9

[0028] The cross-sectional structure of the winding device when the cutting knife cuts the back adhesive provided by the embodiment of the present application is shown in the figure; Figure 11

[0029] The enlarged structure view of part E in the figure is provided by the embodiment of the present application; Figure 12 Figure 11 The cross-sectional structure of the winding device when the fixing disc is separated from the arc-shaped limiting rod provided by the embodiment of the present application is shown in the figure;

[0030] Figure 13

[0031] Figure 14 ​​​​​The cutting knife provided by the embodiment of the application is used to cut the adhesive tape.

[0032] Explanation of reference signs:

[0033] 1, suspension; 101, arc-shaped plate; 102, arc-shaped limiting rod; 103, flat plate; 104, arc-shaped slide; 2, rotating plate; 201, arc-shaped sliding groove; 202, through hole; 3, arc-shaped sliding plate; 301, cutting knife; 4, arc-shaped compression spring; 5, cutting knife; 6, back adhesive roll; 601, back adhesive; 7, adhesive tape roll; 701, adhesive tape; 8, box; 9, pulling plate; 10, compression spring; 11, first roller; 1101, engaging tooth; 12, fixed disc; 1201, arc-shaped sliding hole; 13, second roller; 1301, transmission tooth; 14, arc-shaped guide rod; 1401, limiting block; 15, tension spring; 16, backing plate; 17, foot plate; 18, sliding plate; 19, guide rail; 20, bottom plate; 21, support plate; 22, first connecting plate; 23, second connecting plate; 24, rotating shaft; 25, winding drum; 26, shaft body. DETAILED DESCRIPTION

[0034] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the drawings.

[0035] As Figures 1-14 shown, the back adhesive winding device provided by the embodiment of the application comprises a support, a rotating shaft 24 is rotationally arranged on the support, a winding drum 25 for winding back adhesive 601 is arranged on the rotating shaft 24, the rotating shaft 24 drives the winding drum 25 to rotate to wind the back adhesive 601 into a back adhesive roll 6, a rotating plate 2 having a cutting knife 301 mounted at one end is also rotationally arranged on the support, a pulling plate 9 is arranged on the rotating plate 2 and abuts against the outer surface of the back adhesive roll 6, as the diameter of the back adhesive roll 6 continuously increases, the outer surface of the back adhesive roll 6 is pressed to generate friction with the pulling plate 9, so that the rotating back adhesive roll 6 drives the cutting knife 301 to cut the back adhesive 601.

[0036] The winding device for back adhesive provided by the embodiment is used for winding the back adhesive finished product. The words related to position and reverse, such as "up", "down", "left", "right" and the like in the embodiment are relative to the drawings. "Upstream" in the embodiment is based on the rotating direction of the back adhesive roll 6. Specifically, the rotating shaft 24 is an air inflation shaft, the winding drum 25 is sleeved on the rotating shaft 24, the winding drum 25 is fixed on the rotating shaft 24 when the rotating shaft 24 is inflated, at this time, the winding drum 25 can rotate with the rotating shaft 24, the rotating shaft 24 is deflated when the winding drum 25 needs to be removed, the air inflation shaft is a prior art and is not described herein. Of course, the rotating shaft 24 can also be other structures such as a cylinder, as long as the winding drum 25 can be fixedly sleeved on the rotating shaft 24. A driving motor (not shown in the figure) is installed on the support, the output shaft of the driving motor is coaxially connected with the rotating shaft 24, the driving motor is a speed reducer or a servo motor, the driving motor is started to drive the rotating shaft 24 to rotate, the rotating shaft 24 drives the winding drum 25 to rotate, the back adhesive 601 is wound on the winding drum 25, the winding of the back adhesive 601 is realized by the rotation of the winding drum 25 to form the back adhesive roll 6, and the back adhesive roll 6 rotates with the winding drum 25. The rotating plate 2 is rotatably arranged on the support, and the cutting knife 301 is installed at one end of the rotating plate 2. When the rotating plate 2 rotates, the cutting knife 301 can be driven to rotate. The cutting knife 301 can be driven to rotate towards the direction of the back adhesive 601 by the rotating force of the rotating plate 2, so as to cut the back adhesive 601. The rotating force of the rotating plate 2 comes from the back adhesive roll 6. Specifically, the pulling plate 9 is arranged on the rotating plate 2 and abuts against the outer surface (the outer circumferential surface) of the back adhesive roll 6. In the initial state, the pulling plate 9 does not abut against the outer surface of the back adhesive roll 6. As the winding drum 25 continuously winds the back adhesive 601, the diameter of the back adhesive roll 6 continuously increases, so that the distance between the outer surface of the back adhesive roll 6 and the pulling plate 9 continuously decreases. Until the outer surface of the back adhesive roll 6 abuts against and presses the pulling plate 9, the friction between the outer surface of the back adhesive roll 6 and the pulling plate 9 continuously increases as the pressing force of the outer surface of the back adhesive roll 6 on the pulling plate 9 continuously increases. When the friction is greater than the rotating resistance of the rotating plate 2, the rotating back adhesive roll 6 generates a pulling force on the pulling plate 9 under the action of the friction, so that the pulling plate 9 drives the rotating plate 2 to rotate. The rotating direction of the rotating plate 2 is towards the winding back adhesive 601 (the winding back adhesive 601 refers to the back adhesive 601 that has not been wound on the winding drum 25). The rotating of the rotating plate 2 drives the cutting knife 301 to rotate towards the winding back adhesive 601. Since the winding back adhesive 601 is in a tension state under the action of the rotation of the back adhesive roll 6, the cutting knife 301 can cut the back adhesive 601 when the cutting knife 301 rotates to the winding back adhesive 601. As can be seen, the cutting knife 301 can cut the back adhesive 601 by using the rotating force of the back adhesive roll 6, without the need for an operator to perform cutting operation, thereby reducing the work burden of the operator and saving the driving mechanism (such as the cutting cylinder in the prior art) for driving the cutting knife 301 to move, thereby reducing the production cost of the equipment.In the prior art, when cutting the material tape (equivalent to the adhesive tape 601) in the winding, the cutter cylinder is started to drive the cutter to move towards the material tape to achieve cutting. This not only requires the operator to timely control the timing of starting the cutter cylinder, increasing the workload of the operator, but also requires a separate cutter cylinder, thereby increasing the production cost of the equipment.

[0037] In the embodiment, the rotating plate 2 provided with the cutting knife 301 is rotated on the support, and the pull plate 9 abuttingly matched with the outer surface of the adhesive tape roll 6 is installed on the rotating plate 2. As the winding drum 25 continuously winds the adhesive tape 601, the diameter of the adhesive tape roll 6 is continuously increased, so that the vertical distance between the outer surface of the adhesive tape roll 6 and the pull plate 9 is continuously reduced until the outer surface of the adhesive tape roll 6 abuts and presses the pull plate 9. When the outer surface of the adhesive tape roll 6 presses the pull plate 9, a friction force is generated, which increases with the increase of the pressing force until the rotating resistance of the rotating plate 2 is overcome. At this time, the rotating adhesive tape roll 6 can drive the rotating plate 2 to rotate through the pull plate 9, and the rotation of the rotating plate 2 drives the cutting knife 301 to rotate towards the adhesive tape 601 to cut the adhesive tape 601. Compared with the prior art, the present application does not need to additionally provide a driving mechanism (such as the cutter cylinder in the prior art) to drive the cutting knife 301 to move, but only needs to use the rotating force of the adhesive tape roll 6 to drive the cutting knife 301 to cut the adhesive tape 601, thereby saving the production cost of the equipment. At the same time, when the diameter of the adhesive tape roll 6 reaches a certain value, the cutting knife 301 can be automatically driven to cut the adhesive tape 601, without the need for the operator to control the cutting timing, thereby reducing the workload and effectively solving the problems in the prior art.

[0038] In the embodiment, the support includes a bottom plate 20, two support plates 21 are arranged opposite on the bottom plate 20, and the rotating shaft 24 is rotatably arranged between the two support plates 21, so that the rotating shaft 24 is suspended between the two support plates 21. The adhesive tape roll 6 is located between the two support plates 21 and does not contact the bottom plate 20, so that the rotating shaft 24 can drive the adhesive tape roll 6 to rotate synchronously.

[0039] Further, the support further includes a suspension 1 located above the adhesive tape roll 6, the suspension 1 is fixedly connected with the bottom plate 20 through a plurality of columns, the rotating plate 2 is rotatably arranged on the suspension 1, the rotating plate 2 is located above the adhesive tape roll 6 and does not contact the adhesive tape roll 6, and the pull plate 9 is arranged on the side of the rotating plate 2 facing the adhesive tape roll 6.

[0040] The suspension 1 comprises two oppositely arranged arc-shaped plates 101 fixedly connected through flat plates 103, the number of the flat plates 103 is two, the two flat plates 103 are fixedly installed at the left and right ends of the two arc-shaped plates 101 in a one-to-one correspondence to make the two arc-shaped plates 101 fixedly connected, and the opposite faces of the two arc-shaped plates 101 are symmetrically provided with arc-shaped slides 104, the rotating plate 2 is arc-shaped and matched with the arc-shaped slides 104, the front side and the rear side of the rotating plate 2 are slidably arranged in the two arc-shaped slides 104 in a one-to-one correspondence, the arc center of the rotating plate 2 and the arc center of the arc-shaped slide 104 are located on the axis of the rotating shaft 24. When the outer surface of the back adhesive roll 6 extrudes the pull plate 9, the rotating back adhesive roll 6 can drive the rotating plate 2 to rotate along the arc-shaped slide 104 towards the winding back adhesive 601 through the pull plate 9, and the rotation of the rotating plate 2 drives the cutting knife 301 to rotate towards the winding back adhesive 601 to cut off the winding back adhesive 601.

[0041] Further, the bottom plate 20 is fixedly provided with a guide rail 19, the bottom of each of the two supporting plates 21 is fixedly provided with a sliding plate 18, the two sliding plates 18 are slidably arranged in the guide rail 19, the guide rail 19 extends to the outside of the bottom plate 20 and is staggered with the suspension 1, a plurality of screws (not shown in the figure) are screwed on each sliding plate 18, a plurality of screw holes corresponding to the plurality of screws are formed in the guide rail 19, the two sliding plates 18 are fixed with the guide rail 19 by screwing the screws into the corresponding screw holes, so that the two supporting plates 21 can provide stable support for the rotating shaft 24. Specifically, when it is necessary to remove the winding roll 25 with the back adhesive roll 6 from the rotating shaft 24, the screws are loosened to be separated from the screw holes, and the gas in the rotating shaft 24 is released to cancel the fixation of the winding roll 25 with the rotating shaft 24. Based on the sliding connection between the two sliding plates 18 and the guide rail 19, the two supporting plates 21 can be pulled outwards to slide, the winding roll 25 and the back adhesive roll 6 are located between the two supporting plates 21, so that the sliding of the two supporting plates 21 can drive the winding roll 25 and the back adhesive roll 6 to slide outwards to make the winding roll 25 and the back adhesive roll 6 staggered with the suspension 1, then the supporting plate 21 on the outside (i.e. the side close to the free end of the rotating shaft 24) is removed, and the other supporting plate 21 continues to provide support for the rotating shaft 24. At this time, since the winding roll 25 and the back adhesive roll 6 are not blocked by the suspension 1, the winding roll 25 and the back adhesive roll 6 can be easily removed from the rotating shaft 24.

[0042] In the embodiment, one end of the rotating plate 2 is provided with an arc-shaped sliding groove 201, and the arc-shaped sliding plate 3 is slidingly inserted into the arc-shaped sliding groove 201. The arc shape of the arc-shaped sliding plate 3 and the arc-shaped sliding groove 201 both fall on the axis of the rotating shaft 24. The arc-shaped compression springs 4 are connected between the arc-shaped sliding plate 3 and the arc-shaped sliding groove 201. The number of the arc-shaped compression springs 4 is multiple and uniformly distributed. One end of the arc-shaped compression spring 4 is fixedly connected with the arc-shaped sliding plate 3, and the other end is fixedly connected with the inner wall of the arc-shaped sliding groove 201. Under the connecting action of the arc-shaped compression spring 4, the arc-shaped sliding plate 3 will not be separated from the arc-shaped sliding groove 201. One end of the arc-shaped sliding plate 3 can extend to the outside of the arc-shaped sliding groove 201. The cutting knife 301 is detachably installed on the end of the arc-shaped sliding plate 3 through bolts (not shown in the figure). Specifically, in the initial state, the cutting knife 301 is located in the arc-shaped sliding groove 201, so that the operator will not touch it, improving the operation safety. When the back adhesive roll 6 rotates to drive the rotating plate 2 to rotate, the rotating plate 2 drives the arc-shaped sliding plate 3 and the cutting knife 301 to rotate, so that the cutting knife 301 slides out of the arc-shaped sliding groove 201 and continuously cuts the back adhesive 601 in the winding;

[0043] Further, the support includes a backing plate 16 fixedly arranged on the bottom plate 20, and the backing plate 16 is in abutting cooperation with the cutting knife 301. The back adhesive 601 is located between the backing plate 16 and the cutting knife 301, so that the cutting knife 301 abuts against the backing plate 16 during cutting the back adhesive 601. Specifically, when the cutting knife 301 cuts the back adhesive 601 in the winding, the cutting knife 301 first abuts against the back adhesive 601. When the back adhesive 601 is not cut off, the cutting knife 301 continues to rotate until it abuts against the backing plate 16. At this time, under the supporting action of the backing plate 16, the cutting knife 301 extrudes the back adhesive 601. At this time, under the extrusion force, it can be ensured that the cutting knife 301 cuts off the back adhesive 601. At the same time, based on the arrangement of the arc-shaped compression spring 4, the arc-shaped sliding plate 3 can elastically slide. In the process of the cutting knife 301 continuously extruding the backing plate 16, the cutting knife 301 pushes the arc-shaped sliding plate 3 to extrude the arc-shaped compression spring 4 to be deformed under pressure, so as to release the force of the cutting knife 301, thereby protecting the cutting knife 301 and preventing the cutting knife 301 from being damaged due to excessive extrusion force on the backing plate 16.

[0044] Further, the support includes two groups of foot plates 17 fixedly arranged on the bottom plate 20, each of which is fixedly installed with an arc-shaped guide rod 14, the arc shape of the arc-shaped guide rod 14 falls on the axis of the rotating shaft 24, the two arc-shaped guide rods 14 are slidably inserted with the rotating plate 2, the two arc-shaped guide rods 14 are staggered with the arc-shaped sliding plate 3 and the back adhesive 601, the sliding insertion of the two arc-shaped guide rods 14 with the rotating plate 2 makes the rotating plate 2 more stable when rotating and less likely to shake, each arc-shaped guide rod 14 is sleeved with a tension spring 15, one end of the tension spring 15 is fixedly connected with the foot plate 17, and the other end is fixedly connected with the right end surface of the rotating plate 2. Specifically, each of the two arc-shaped guide rods 14 is fixedly installed with a limiting block 1401, in the initial state, under the action of the tension of the two tension springs 15, the end surface of the rotating plate 2 abuts against the limiting block 1401, when the back adhesive roll 6 drives the rotating plate 2 to rotate, the rotating plate 2 pulls the two tension springs 15 to further stretch, and when the back adhesive roll 6 is removed to separate the outer surface of the back adhesive roll 6 from the pulling plate 9, under the action of the elastic force of the two tension springs 15, the rotating plate 2 can be pulled to slide reversely and abut against the limiting block 1401 again to reset the rotating plate 2, and under the action of the elastic force of the arc-shaped compression spring 4, the arc-shaped sliding plate 3 and the cutting knife 301 can be driven to slide towards the arc-shaped sliding groove 201 to reset.

[0045] In the embodiment, the inner side surface of the rotating plate 2 is fixedly installed with a sleeve box 8 with an open bottom, the pulling plate 9 is slidably arranged in the sleeve box 8, the bottom of the pulling plate 9 protrudes from the sleeve box 8 to abut against and cooperate with the outer surface of the back adhesive roll 6, the pulling plate 9 is connected with the inner wall of the sleeve box 8 through the avoidance compression spring 10, the number of the avoidance compression spring 10 is multiple and evenly distributed, one end of the avoidance compression spring 10 is fixedly connected with the pulling plate 9, and the other end is fixedly connected with the inner wall of the sleeve box 8, so that the pulling plate 9 will not be separated from the sleeve box 8. Specifically, as the diameter of the back adhesive roll 6 continuously increases, the outer surface of the back adhesive roll 6 will continuously extrude the pulling plate 9 to elastically slide towards the inside of the sleeve box 8, so that the avoidance compression spring 10 is continuously compressed, and as the compression elastic force of the compression spring 10 continuously increases, the frictional force between the pulling plate 9 and the outer surface of the back adhesive roll 6 continuously increases, until the back adhesive roll 6 drives the rotating plate 2, the arc-shaped sliding plate 3 and the cutting knife 301 to rotate towards the back adhesive 601 to cut the back adhesive 601 (at this time the compression spring 10 can still continue to compress), after cutting the back adhesive 601, the cutting knife 301 abuts against the backing plate 16, the backing plate 16 plays a limiting role for the cutting knife 301, at this time, when the operator does not timely turn off the driving motor so that the back adhesive roll 6 continues to rotate, based on the setting of the compression spring 10, the back adhesive roll 6 can drive the pulling plate 9 to slide towards the inside of the sleeve box 8 to make the back adhesive roll 6 continue to rotate, preventing the damage of the back adhesive roll 6 or the device parts caused by jamming.

[0046] At the same time, since the pulling plate 9 always elastically abuts against the outer surface of the back adhesive roll 6, when the back adhesive 601 is cut, under the extrusion action of the pulling plate 9, the back adhesive 601 will not be peeled off from the back adhesive roll 6, and the tightness of the winding of the back adhesive roll 6 is effectively ensured.

[0047] Further, the shaft body 26 is arranged on the rotating plate 2, the outer surface of the rotating plate 2 is fixedly provided with two first connecting plates 22 arranged oppositely, the shaft body 26 is rotatably inserted on the two first connecting plates 22, both ends of the shaft body 26 are screwed with a limiting disc to prevent the shaft body 26 from being separated from the two first connecting plates 22, and the two limiting discs are located outside the two first connecting plates 22. When the shaft body 26 needs to be removed, one of the limiting discs can be removed. The shaft body 26 is sleeved with the fixedly connected adhesive tape roll 7 and the fixed disc 12. The number of the fixed disc 12 is two. The adhesive tape roll 7 is located between the two fixed discs 12 and is fixedly connected with the two fixed discs 12 (the adhesive tape roll 7 includes a plastic ring and an adhesive tape 701 wound on the plastic ring. The fixed connection between the adhesive tape roll 7 and the two fixed discs 12 can be achieved by screwing or bonding, which is not described in detail). The two fixed discs 12 can improve the firmness of the connection between the adhesive tape roll 7 and the fixed disc 12. The suspension 1 includes the arc-shaped limiting rod 102 slidably inserted with the fixed disc 12 to prevent the fixed disc 12 from rotating. The fixed disc 12 is provided with the arc-shaped sliding hole 1201 for the arc-shaped limiting rod 102 to slide and insert. The number of the arc-shaped limiting rod 102 is two and is slidably inserted with the two fixed discs 12 one by one. The rotating plate 2 is provided with the through hole 202. The free end of the adhesive tape 701 on the adhesive tape roll 7 is located upstream of the pulling plate 9 after passing through the through hole 202 (as shown in the figure). The bottom height of the pulling plate 9 is lower than the bottom height of the adhesive tape 701 (i.e. the height of the free end of the adhesive tape 701). The adhesive tape 701 is bonded with the outer surface of the adhesive backing 6. Based on the bonding force between the adhesive tape 701 and the outer surface of the adhesive backing 6, the rotating adhesive backing 6 drives the rotating plate 2 to rotate. Figure 8

[0048] ​The design of the above structure is to: when the diameter of the back adhesive roll 6 continues to increase, the outer surface of the back adhesive roll 6 first abuts against the pull plate 9 and elastically slides the pull plate 9 towards the inside of the box 8, then the outer surface of the back adhesive roll 6 contacts the adhesive tape 701 (the adhesive surface of the adhesive tape 701 is located upstream), and then as the diameter of the back adhesive roll 6 further increases, the adhesive tape 701 is pressed into the back adhesive roll 6 and the pull plate 9 by the back adhesive roll 6, at this time, the adhesive tape 701 is pressed and adhered to the outer surface of the back adhesive roll 6 under the pressing action of the pull plate 9, and the rotation of the back adhesive roll 6 can pull the adhesive tape 701 under the adhesion of the adhesive tape 701 and the back adhesive roll 6 and the pressing action of the pull plate 9, since the fixed disc 12 cannot rotate under the action of the arc-shaped limiting rod 102, the rotation of the back adhesive roll 6 pulls the adhesive tape 701 to rotate the rotating plate 2 to make the cutting knife 301 cut the back adhesive 601. As can be seen, when the height of the free end of the adhesive tape 701 is the same, the diameter of the back adhesive roll 6 after each cut of the back adhesive 601 will be the same or approximately the same, and when the height of the free end of the adhesive tape 701 is different, the diameter of the back adhesive roll 6 after cutting the back adhesive 601 will be different, that is, the setting of the adhesive tape 701 not only plays a role in pulling the cutting knife 301 to cut the back adhesive 601, but also plays a role in adjusting the diameter of the back adhesive roll 6 after cutting the back adhesive 601, when different diameters of back adhesive roll 6 need to be wound, the height of the free end of the adhesive tape 701 can be adjusted.

[0049] At the same time, when the rotating plate 2 is pulled to rotate by the adhesive tape 701, the pull plate 9 not only plays a role in providing friction for the back adhesive roll 6, but also plays a role in pressing and pasting the adhesive tape 701 on the back adhesive roll 6.

[0050] Further, based on the setting of the arc-shaped compression spring 4, after the cutting knife 301 cuts the back adhesive 601, the rotating plate 2 can further rotate to make the arc-shaped compression spring 4 further compressed, that is, after the cutting knife 301 cuts the back adhesive 601, as the back adhesive roll 6 continues to rotate to drive the rotating plate 2 and the fixed disc 12 to continue to rotate until the fixed disc 12 separates from the arc-shaped limiting rod 102 to make the fixed disc 12 able to rotate (as shown in Figure 13 , the rotation of the back adhesive roll 6 can pull the adhesive tape 701 to rotate the adhesive tape roll 7 and the fixed disc 12 to make the adhesive tape 701 continuously pressed and pasted on the outer surface of the back adhesive roll 6 by the pull plate 9, until the adhesive tape 701 passes the cut end (i.e. the free end) of the adhesive tape roll 6 to fix the cut end of the adhesive tape roll 6 on the adhesive tape roll 6 (as shown in Figure 14 , achieving automatic sealing of the adhesive tape roll 6 to prevent the adhesive tape roll 6 from loosening, thereby eliminating the sealing action of the cut end of the adhesive tape roll 6 in the later stage.

[0051] Further, the outer surface of the rotating plate 2 is fixedly provided with two second connecting plates 23 arranged oppositely, the first roller shaft 11 and the second roller shaft 13 are rotatably arranged between the two second connecting plates 23, the second roller shaft 13 is located above the first roller shaft 11, the cutting knife 5 is fixedly arranged on the first roller shaft 11, the outer circumferential surface of the first roller shaft 11 is circumferentially provided with a plurality of meshing teeth 1101, the plurality of meshing teeth 1101 are evenly divided into two groups, the two groups of meshing teeth 1101 are respectively located on the two sides of the outer surface of the first roller shaft 11, the cutting knife 5 is located between the two groups of meshing teeth 1101, the outer circumferential surface of the second roller shaft 13 is fixedly provided with two transmission teeth 1301 corresponding to the two groups of meshing teeth 1101, the adhesive tape 701 passes through the top of the second roller shaft 13 and is located between the two transmission teeth 1301, the side of the adhesive tape 701 abutting against the second roller shaft 13 is the adhesive surface, the second roller shaft 13 can be coated with glue to increase the adhesion of the adhesive tape 701, after the adhesive tape 701 passes through the top of the second roller shaft 13, the adhesive tape 701 enters the through hole 202, when the fixed disc 12 is separated from the arc-shaped limiting rod 102 so that the adhesive tape 701 is pulled by the rotating adhesive tape roll 6, the adhesive tape 701 can drive the second roller shaft 13 to rotate, the second roller shaft 13 drives the first roller shaft 11 to rotate through the meshing effect of the transmission teeth 1301 and the meshing teeth 1101, the rotation of the first roller shaft 11 drives the cutting knife 5 to rotate towards the adhesive tape 701, when the adhesive tape 701 fixes the cut end of the adhesive tape roll 6 on the adhesive tape roll 6, the cutting knife 5 contacts the adhesive tape 701 to cut the adhesive tape 701. Therefore, the rotation of the adhesive tape roll 6 can drive the cutting knife 5 to cut the adhesive tape 701 through the adhesive tape 701, and the operation of cutting the adhesive tape 701 separately is omitted.

[0052] The foregoing merely describes some exemplary embodiments of the present application by way of illustration, and it is needless to say that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present application. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of the claims of the present application.

Claims

1. A back adhesive winding device, comprising a support, a rotating shaft (24) is arranged on the support, a winding drum (25) for winding back adhesive (601) is sleeved on the rotating shaft (24), and the rotating shaft (24) drives the winding drum (25) to rotate to wind the back adhesive (601) to form a back adhesive roll (6), characterized in that: a rotating plate (2) with a cutting knife (301) mounted at one end is further arranged on the support, the rotating plate (2) is provided with a pulling plate (9) abutting against the outer surface of the back adhesive roll (6), and the outer surface of the back adhesive roll (6) is pressed to generate friction with the pulling plate (9) as the diameter of the back adhesive roll (6) continuously increases, so that the rotating back adhesive roll (6) drives the cutting knife (301) to cut the back adhesive (601); the support comprises a bottom plate (20), two supporting plates (21) are arranged on the bottom plate (20) in opposition, the rotating shaft (24) is arranged on the two supporting plates (21) to rotate, and the back adhesive roll (6) is located between the two supporting plates (21); the support further comprises a suspension (1) located above the back adhesive roll (6), the suspension (1) is fixedly connected with the bottom plate (20) through a stand column, and the rotating plate (2) is arranged on the suspension (1) to rotate; an open-bottomed sleeve box (8) is fixedly mounted on the inner side of the rotating plate (2), the pulling plate (9) is slidably arranged in the sleeve box (8), the bottom of the pulling plate (9) protrudes out of the sleeve box (8) to abut against the outer surface of the back adhesive roll (6), and an avoidance compression spring (10) is connected between the pulling plate (9) and the inner wall of the sleeve box (8); the suspension (1) comprises two arc-shaped plates (101) arranged in opposition, the two arc-shaped plates (101) are fixedly connected through a flat plate (103), arc-shaped sliding grooves (104) are symmetrically formed in the opposite surfaces of the two arc-shaped plates (101), the rotating plate (2) is arc-shaped and matched with the arc-shaped sliding grooves (104), the front side and the rear side of the rotating plate (2) are slidably arranged in the two arc-shaped sliding grooves (104) in one-to-one correspondence, and the arc centers of the arc-shaped sliding grooves (104) are located on the axis of the rotating shaft (24). a guide rail (19) is fixedly mounted on the bottom plate (20), a sliding plate (18) is fixedly mounted on the bottom of each of the two supporting plates (21), the two sliding plates (18) are slidably arranged in the guide rail (19), a plurality of screws are screwed on each of the sliding plates (18), and a plurality of screw holes corresponding to the plurality of screws are formed in the guide rail (19).

2. The backing adhesive winding device according to claim 1, characterized in that: an arc-shaped sliding groove (201) is formed at one end of the rotating plate (2), an arc-shaped sliding plate (3) is slidably inserted into the arc-shaped sliding groove (201), an arc-shaped compression spring (4) is connected between the arc-shaped sliding groove (201) and the arc-shaped sliding plate (3), and the cutting knife (301) is detachably mounted on the arc-shaped sliding plate (3).

3. The backing adhesive winding device according to claim 1, wherein: ​ 4. The backing adhesive winding device according to claim 3, wherein: The support includes a base plate (20) fixedly provided with a backing plate (16), the backing plate (16) is in abutting cooperation with a cutting knife (301), and the adhesive (601) is located between the backing plate (16) and the cutting knife (301) to abut against the backing plate (16) in the process that the cutting knife (301) cuts the adhesive (601).

5. The backing adhesive winding device according to claim 1, wherein: The support includes two groups of foot plates (17) fixedly provided on the base plate (20), each of the two groups of foot plates (17) is fixedly installed with an arc-shaped guide rod (14), the two arc-shaped guide rods (14) are slidably inserted into the rotating plate (2), each of the arc-shaped guide rods (14) is sleeved with a tension spring (15), one end of the tension spring (15) is fixedly connected with the foot plate (17), and the other end is fixedly connected with the right end surface of the rotating plate (2).

6. The backing adhesive winding device according to claim 1, wherein: The rotating plate (2) is provided with a shaft body (26), the shaft body (26) is sleeved with a fixedly connected adhesive tape roll (7) and a fixed disc (12), the suspension (1) includes an arc-shaped limiting rod (102) slidably inserted into the fixed disc (12) so that the fixed disc (12) cannot rotate, the rotating plate (2) is provided with a through hole (202), the adhesive tape (701) on the adhesive tape roll (7) is located upstream of the pulling plate (9) after passing through the through hole (202), the bottom of the pulling plate (9) is lower than the bottom of the adhesive tape (701), the adhesive tape (701) is in abutting cooperation with the outer surface of the adhesive roll (6), and the adhesive tape (701) drives the rotating adhesive roll (6) to rotate the rotating plate (2) based on the adhesion force between the adhesive tape (701) and the outer surface of the adhesive roll (6).

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