Back adhesive production device and manufacturing process

Abstract

The application relates to the technical field of back adhesive machines, and discloses a back adhesive production device, which comprises a rack, a feeding roll and a collecting roll rotatably arranged on the rack, and a tension adjusting piece located between the feeding roll and the collecting roll; the tension adjusting piece comprises a movable plate in elastic sliding connection with the rack, one end of the movable plate is rotatably provided with an upper roller in abutment with the material, and the movable plate elastically slides based on the acting force of the material on the upper roller. In the application, even if the difference between the linear speed of the feeding roll and the linear speed of the collecting roll changes, the material can keep a reasonable tension state under the automatic adjusting action of the tension adjusting piece when the material gradually relaxes or gradually tightens, so that the problems that the material is deformed, broken or the adhesive layer cannot be attached to the material are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of back adhesive machines, in particular to a back adhesive production device and manufacturing process. BACKGROUND

[0002] The production process of back adhesive is through a back adhesive machine, which sequentially pastes a layer of adhesive and a layer of release paper (the release paper is attached to the bottom of the adhesive layer to prevent the adhesive layer from adhering to the ash layer and losing the adhesive force) on the back of the product such as stickers and posters, thereby realizing the production of back adhesive. When the product with back adhesive is posted, the release paper can be torn off for use.

[0003] For example, a Chinese invention patent with application number CN202110155284.1 and publication number CN112974115B, entitled "A back adhesive machine for high-precision multi-strip back adhesive coating", discloses "a material roll to be processed, a horizontal adjustment device for adjusting the horizontal position of the material roll to be processed, a plurality of double-sided adhesive rolls, a plurality of adhesive back rolls equal in number to the plurality of double-sided adhesive rolls, a first material roll and a second material roll, a first roller device, a second roller device and a third roller device for maintaining the material roll to be processed in a horizontal state, a detection device for detecting whether the first material roll is coated accurately, and a processed material roll located on the other side of the rack". The material to be processed is released by the material roll to be processed, and the adhesive layer of the double-sided adhesive roll is coated on the material to be processed. The adhesive back layer of the double-sided adhesive roll is wound and rolled by the adhesive back roll. When the material coated with the adhesive layer passes through the roller device, the material on the material roll passes through the roller device to coat the material on the part of the material coated with the adhesive layer. Finally, the material coated with the material layer is wound by the material roll.

[0004] The back adhesive production device provided by the above-mentioned invention patent can paste the adhesive layer and the release paper layer (i.e. the material layer in the above-mentioned prior art) on the required material, thereby realizing the production of the back adhesive. However, the radius of the feed roll (i.e. the material roll to be processed in the above-mentioned prior art) becomes smaller and smaller, and the radius of the take-up roll (i.e. the material roll in the above-mentioned prior art) becomes larger and larger during the actual operation of the back adhesive production, so that the linear speed of the feed roll and the take-up roll changes in real time, and the difference between the linear speed of the feed roll and the linear speed of the take-up roll also changes. Therefore, after a period of work, the material is prone to have an excessively large or small tension. When the tension is excessively large, the material is deformed or broken. When the tension is excessively small, the material is relaxed. When the material is too relaxed, the adhesive layer cannot be pasted on the material due to the lack of supporting force, thereby causing the material product wound thereafter to be a defective product, affecting the production quality of the back adhesive. Therefore, how to keep the tension of the material within a reasonable range while continuously advancing the production of the back adhesive even if the difference between the linear speed of the feed roll and the linear speed of the take-up roll changes is a technical problem to be solved. SUMMARY

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

[0006] In order to achieve the above-mentioned purpose, the present application provides the following technical solution: a back adhesive production device, comprising a rack, a feed roll and a take-up roll rotatably arranged on the rack, and a tension adjusting member located between the feed roll and the take-up roll.

[0007] The tension adjusting member comprises a movable plate elastically connected with the rack, one end of the movable plate is rotatably provided with an upper roller abutting against the material, and the movable plate elastically slides based on the force applied to the upper roller by the material.

[0008] The back adhesive production device described above, the rack is fixedly provided with a sleeve box with an open bottom, the movable plate is slidably inserted into the sleeve box from the bottom of the sleeve box, a compression spring is connected between the sleeve box and the movable plate, one end of the compression spring is fixedly connected with the sleeve box, and the other end is fixedly connected with the movable plate.

[0009] The back adhesive production device described above, the rack is rotatably provided with a first directional roller and a second directional roller, the upper roller is located between the first directional roller and the second directional roller, and the height of the upper roller is lower than the height of the first directional roller and the second directional roller.

[0010] The back adhesive production device described above, the rack is rotatably provided with a double-sided adhesive roller, the double-sided adhesive roller is tightly provided with a double-sided adhesive roll, and the double-sided adhesive roll is located above the feed roll.

[0011] The back adhesive production device, the first compression roller is rotationally arranged on the frame, the material to be processed on the material roll and the double-sided adhesive on the double-sided adhesive roll pass through the bottom of the first compression roller to make the adhesive layer on the double-sided adhesive coat on the material to be processed to form a semi-processed material.

[0012] The back adhesive production device, the first compression roller is rotationally arranged on the frame, the first compression roller is rotationally arranged on the frame, the double-sided adhesive on the double-sided adhesive roll passes through the first compression roller, and the adhesive backing layer on the double-sided adhesive is wound on the adhesive backing roll.

[0013] The back adhesive production device, the first compression roller is rotationally arranged on the frame, the first compression roller is rotationally arranged on the frame, the double-sided adhesive on the double-sided adhesive roll passes through the first compression roller, and the adhesive backing layer on the double-sided adhesive is wound on the adhesive backing roll.

[0014] The back adhesive production device, the first compression roller is rotationally arranged on the frame, the first compression roller is rotationally arranged on the frame, the double-sided adhesive on the double-sided adhesive roll passes through the first compression roller, and the adhesive backing layer on the double-sided adhesive is wound on the adhesive backing roll.

[0015] The back adhesive production device, the first compression roller is rotationally arranged on the frame, the first compression roller is rotationally arranged on the frame, the double-sided adhesive on the double-sided adhesive roll passes through the first compression roller, and the adhesive backing layer on the double-sided adhesive is wound on the adhesive backing roll.

[0016] A back adhesive production process based on the back adhesive production device, the back adhesive production process comprising the following steps:

[0017] S1: setting the initial position of the upper roller: passing the material from the bottom of the upper roller to make the material generate an upward force on the upper roller, adjusting the tension of the material to make the movable plate elastically slide to determine the position of the upper roller, and then winding the material on the material roll to keep the material acting on the upper roller, so that the upper roller is stable at the set position;

[0018] S2: automatic adjustment of the material tension: as the material roll is continuously unwound and the material roll is continuously wound, when the material gradually relaxes, the movable plate drives the upper roller to move towards the material under the action of the elastic force to keep the material tensioned; when the material gradually tightens, the material presses the upper roller, driving the upper roller and the movable plate to elastically slide away from the material to release the tension of the material.

[0019] Beneficial effects: in the above technical solution, the back adhesive production device and manufacturing process provided by the application, by elastically sliding the movable plate on the rack, and rotating the upper roller on the movable plate, the upper roller and the movable plate can elastically slide, and the elastic force is generated between the material and the upper roller by the abutment of the upper roller and the material. During the production of the back adhesive, when the material gradually relaxes, the upper roller is driven to slide towards the material under the action of the elastic sliding force of the movable plate, so that the material continuously acts on the upper roller, and then the material can be continuously tensioned, so that the adhesive layer on the double-sided tape can be successfully attached to the material; on the contrary, when the material gradually tightens, the material extrudes the upper roller, and the upper roller drives the movable plate to elastically slide away from the material to release the material, so that the material will not be stretched and deformed or even broken, and the material can be kept in a reasonable tension state. Compared with the prior art, in the application, as the back adhesive production process continues, even if the difference between the linear speed of the feeding roll and the linear speed of the receiving roll changes, when the material gradually relaxes or gradually tightens, the material can maintain a reasonable tension state under the automatic adjustment of the tension adjusting piece, thereby avoiding the problems of material deformation, breakage or adhesive layer unable to attach to the material, and effectively solving the deficiencies in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions 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 based on these drawings.

[0021] Figure 1 The three-dimensional structure schematic diagram of the back adhesive production device provided by the embodiment of the present application;

[0022] Figure 2 The cross-sectional structure schematic diagram of the back adhesive production device provided by the embodiment of the present application;

[0023] Figure 3 The cross-sectional structure schematic diagram between the double-sided tape roll and the double-sided tape roll provided by the embodiment of the present application;

[0024] Figure 4 The three-dimensional structure schematic diagram of the tension adjusting piece provided by the embodiment of the present application;

[0025] Figure 5 The three-dimensional structure schematic diagram of the tension adjusting piece provided by the embodiment of the present application; Figure 2

[0026] Figure 6 ​A cross-sectional structure schematic view of the tension adjusting piece when the torsion plate is separated from the clamping plate.

[0027] Mark explanation:

[0028] 1, rack; 101, groove; 2, material roll; 201, material to be processed; 3, double-sided adhesive roll; 4, first direction roller; 5, second direction roller; 6, material receiving roll; 601, finished material; 7, adhesive backing roll; 8, first compression roller; 9, release paper roll; 10, second compression roller; 11, box; 12, movable plate; 13, upper roller; 14, lower roller; 15, guide plate; 16, support block; 1601, avoidance hole; 17, first directional roller; 18, second directional roller; 19, first support; 20, second support; 21, torsion plate; 2101, cutting knife; 2102, inclined surface; 22, clamping plate; 23, first rotating shaft; 24, second rotating shaft; 25, compression spring; 26, column; 27, third direction roller; 28, extrusion plate; 29, second moving shaft; 30, winding drum; 31, extrusion spring; 32, second drive motor. DETAILED DESCRIPTION

[0029] 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.

[0030] As Figures 1-6 shown, the back adhesive production device provided by the embodiment of the present application comprises a rack 1, the rack 1 is rotationally provided with a material roll 2 and a material receiving roll 6, and further comprises a tension adjusting piece located between the material roll 2 and the material receiving roll 6.

[0031] The tension adjusting piece comprises a movable plate 12 in elastic sliding connection with the rack 1, one end of the movable plate 12 is rotationally provided with an upper roller 13 abutting against the material, and the movable plate 12 elastically slides based on the acting force applied by the material to the upper roller 13.

[0032] The back adhesive production device provided by the embodiment is used for making back adhesive on a required product, that is, sequentially pasting a glue layer and a release paper layer on the back of the required product to realize the production of back adhesive. In the embodiment, the words related to direction and position such as "upper", "lower", "left", "right", "clockwise" and "counterclockwise" are relative to the drawings. Specifically, the feeding roll 2 is wound by the material to be processed 201, the material to be processed 201 is wound on the unwinding drum, the unwinding drum is coaxially sleeved on the first driving shaft and is keyed connected with the first driving shaft, the first driving shaft is rotationally arranged on the rack 1, the first driving motor (not shown in the figure) is installed on the rack 1, the output shaft of the first driving motor is coaxially keyed connected with the first driving shaft, the first driving motor is started to drive the first driving shaft to rotate counterclockwise, the first driving shaft drives the unwinding drum to synchronously rotate counterclockwise, the unwinding drum drives the feeding roll 2 to synchronously rotate counterclockwise, and finally the material to be processed 201 is released. The take-up roll 6 is wound by the finished material 601, the finished material 601 is wound on the winding drum 30, the winding drum 30 is coaxially sleeved on the second driving shaft 29 and is keyed connected with the second driving shaft 29, the second driving shaft 29 is rotationally arranged on the rack 1, the second driving motor 32 is installed on the rack 1, the output shaft of the second driving motor 32 is coaxially keyed connected with the second driving shaft 29, the second driving motor 32 is started to drive the second driving shaft 29 to rotate counterclockwise, the second driving shaft 29 drives the winding drum 30 to synchronously rotate counterclockwise, the winding drum 30 drives the take-up roll 6 to synchronously rotate counterclockwise, and finally the finished material 601 is wound. During work, the first driving motor and the second driving motor 32 are started at the same time, so that the feeding roll 2 releases the material while the take-up roll 6 takes up the material, the rotation speed of the first driving motor and the second driving motor 32 and the setting and adjustment of the rotation speed are prior art and are not described herein. The tension adjusting member is located between the feeding roll 2 and the take-up roll 6 and is used for automatically adjusting the tension of the material between the feeding roll 2 and the take-up roll 6. The movable plate 12 can elastically slide up and down, the upper roller 13 is rotationally arranged at the bottom end of the movable plate 12 and can synchronously slide with the movable plate 12, the material between the feeding roll 2 and the take-up roll 6 passes through the bottom of the upper roller 13, the bottom of the upper roller 13 is in extrusion abutment with the top of the material, that is, the material generates upward force on the upper roller 13, different tension of the material will make the upper roller 13 and the movable plate 12 be located at different positions, so that the real-time adjustment of the tension of the material is realized, and the upper roller 13 is driven to rotate counterclockwise when the material is wound by the take-up roll 6.In the process of the back adhesive production, the line speed of the feeding roll 2 and the line speed of the collecting roll 6 can change in real time, so that the tension of the material between the feeding roll 2 and the collecting roll 6 can change continuously. When the material is continuously relaxed, the elastic force pushes the movable plate 12 and the upper roller 13 to move towards the material (i.e. downward), so that the material is tensioned, so that the material has enough supporting force to make the adhesive layer on the double-sided adhesive tape adhere to the material, thereby preventing the material from being too relaxed to adhere the adhesive layer. When the material is continuously tensioned, the material exerts an increasing force on the upper roller 13, and the increasing force pushes the movable plate 12 and the upper roller 13 to slide away from the material (i.e. upward), thereby releasing the tension of the material, so that the material can be prevented from being deformed or even broken. As can be seen, by providing the tension adjusting member, the tension of the material can be automatically adjusted within a certain range, so that the material is prevented from being too relaxed to adhere the adhesive layer and from being too tensioned to be deformed or even broken. In the prior art, due to the lack of the tension adjusting member, after a period of work, the material is prone to have too large or too small tension. When the tension is too large, the material is deformed or broken. When the tension is too small, the material is relaxed. When the material is too relaxed, the adhesive layer cannot be adhered to the material due to the lack of supporting force, thereby causing the collected material product to be a defective product, and affecting the production quality of the back adhesive.

[0033] In the embodiment, the movable plate 12 is elastically slidably arranged on the rack 1, and the upper roller 13 is rotatably arranged on the movable plate 12, so that the upper roller 13 and the movable plate 12 can elastically slide, and the abutment between the upper roller 13 and the material generates an elastic force between the material and the upper roller 13. In the process of the back adhesive production, when the material is gradually relaxed, the upper roller 13 is driven to slide towards the material under the elastic sliding force of the movable plate 12, so that the material continuously exerts a force on the upper roller 13, and the material is continuously tensioned, so that the adhesive layer on the double-sided adhesive tape can be successfully adhered to the material. Conversely, when the material is gradually tensioned, the material presses the upper roller 13, so that the upper roller 13 drives the movable plate 12 to elastically slide away from the material to release the tension of the material, so that the material is not stretched, deformed or broken, and the material is kept in a reasonable tension state. Compared with the prior art, in the present application, as the back adhesive production process continuously advances, even if the difference between the line speed of the feeding roll 2 and the line speed of the collecting roll 6 changes, so that the material is gradually relaxed or gradually tensioned, the material can be kept in a reasonable tension state under the automatic adjustment of the tension adjusting member, thereby avoiding the problems of material deformation, breakage or the adhesive layer failing to adhere to the material, and effectively solving the deficiencies in the prior art.

[0034] In the embodiment, the rack 1 is fixedly provided with a sleeve box 11 with an open bottom, the inner cavity of the sleeve box 11 is in a vertical state, and the movable plate 12 elastically slides up and down in the vertical direction. The movable plate 12 is slidably inserted into the sleeve box 11 from the bottom of the sleeve box 11, and the sleeve box 11 provides sliding guidance for the movable plate 12. A compression spring 25 is connected between the sleeve box 11 and the movable plate 12. One end of the compression spring 25 is fixedly connected with the sleeve box 11, and the other end of the compression spring 25 is fixedly connected with the movable plate 12. The compression spring 25 is located in the inner cavity of the sleeve box 11. The number of the compression spring 25 is at least two and is evenly distributed to balance the stress of the movable plate 12. The elastic sliding of the movable plate 12 is realized under the elastic force of the compression spring 25, and the movable plate 12 will not be separated from the sleeve box 11 under the connecting action of the compression spring 25.

[0035] Further, the first orientation roller 17 and the second orientation roller 18 are rotatably arranged on the rack 1, the first support 19 and the second support 20 are fixedly arranged on the rack 1, the first orientation roller 17 is rotatably arranged on the first support 19, the second orientation roller 18 is rotatably arranged on the second support 20, the upper roller 13 is located between the first orientation roller 17 and the second orientation roller 18, the first orientation roller 17 is located on the left side of the upper roller 13, the second orientation roller 18 is located on the right side of the upper roller 13, the height of the upper roller 13 is lower than the height of the first orientation roller 17 and the second orientation roller 18, the material passes through the top of the first orientation roller 17, the bottom of the upper roller 13 and the top of the second orientation roller 18 in sequence, so that the material located between the first orientation roller 17 and the second orientation roller 18 is in a "V" shape. Specifically, in the initial state before the finished material 601 is wound (when the first driving motor and the second driving motor 32 are not started), the material is manually pulled, the pulling force on the material is adjusted, the upper roller 13 and the movable plate 12 are pushed upwards to a suitable height (the suitable height refers to that the compression spring 25 is compressed to a certain extent by the movable plate 12, so that the compression spring 25 can be further compressed and elongated, and thus the upper roller 13 and the movable plate 12 have a space for upward and downward movement), and after the height of the upper roller 13 and the movable plate 12 is determined, the material can be wound on the winding roller 30. In the process of making the back adhesive, as the feeding roller 2 gradually feeds the material to be processed 201 and the material winding roller 6 gradually winds the finished material 601, the linear speed of the feeding roller 2 and the linear speed of the material winding roller 6 change constantly, which causes the material to be constantly relaxed or tightened. When the material is constantly relaxed, the movable plate 12 and the upper roller 13 are pushed downward under the elastic force of the compression spring 25, the downward moving upper roller 13 pushes the material to keep the material constantly tensioned, thereby avoiding the relaxation of the material, so that the material has enough supporting force to make the adhesive layer adhere to the material; when the material is constantly tightened, the pushing force of the material on the upper roller 13 increases, so that the upper roller 13 and the movable plate 12 slide upward, the compression spring 25 is compressed under stress, thereby releasing the force of the material, preventing the material from deforming or even breaking, and the maximum compression force of the compression spring 25 is less than the minimum tension of the material to deform, so that when the upper roller 13 and the movable plate 12 slide upward, the material will not deform.

[0036] In the embodiment, the double-sided adhesive roller is rotatably arranged on the rack 1, the double-sided adhesive roll 3 is tightly arranged on the double-sided adhesive roller, the third driving motor (not shown in the figure) is arranged on the rack 1, the output shaft of the third driving motor is coaxially keyed connected with the double-sided adhesive roller, when the third driving motor is started to drive the double-sided adhesive roller to rotate, the double-sided adhesive roll 3 can be driven to rotate synchronously, the rotation of the double-sided adhesive roll 3 releases the double-sided adhesive on the double-sided adhesive roll 3, the double-sided adhesive includes an adhesive layer and an adhesive back layer, the adhesive layer is used to adhere to the material, the double-sided adhesive roll 3 is located above the feeding roll 2, and the adhesive layer faces the top surface of the material, so that the adhesive layer can adhere to the top surface of the material.

[0037] Further, the first compression roller 8 is rotatably arranged on the frame 1, the material 201 on the feeding roll 2 and the double-sided adhesive tape on the double-sided adhesive roll 3 are pressed through the bottom of the first compression roller 8 so that the adhesive layer on the double-sided adhesive tape is coated on the material 201 to form a semi-processed material. Specifically, the first direction roller 4 and the second direction roller 5 are rotatably arranged on the frame 1, the material 201 passes through the bottom of the first direction roller 4 and then enters the bottom of the first compression roller 8 so that the direction of the material 201 entering the bottom of the first compression roller 8 is fixed, the double-sided adhesive tape passes through the bottom of the second direction roller 5 and then enters the bottom of the first compression roller 8 so that the direction of the double-sided adhesive tape entering the bottom of the first compression roller 8 is fixed, the double-sided adhesive tape is located above the material 201, and when the double-sided adhesive tape and the material 201 are pressed through the bottom of the first compression roller 8, the adhesive layer on the double-sided adhesive tape is coated on the material 201;

[0038] Further, the backing roll 7 is rotatably arranged on the frame 1 above the first compression roller 8, the backing roll 7 is used to wind the backing layer of the double-sided adhesive tape, the backing layer is wound on the backing roller, the backing roller is rotatably arranged on the frame 1, the fourth driving motor (not shown in the figure) is installed on the frame 1, the output shaft of the fourth driving motor is coaxially keyed connected with the backing roller, the fourth driving motor is started to drive the backing roller to rotate, the rotation of the backing roller realizes the winding of the backing layer, the backing layer of the double-sided adhesive tape on the double-sided adhesive roll 3 is wound by the backing roll 7 after the double-sided adhesive tape passes through the first compression roller 8, and details are not described herein, and then the semi-processed material continues to move downstream with the rotation of the winding drum 30;

[0039] Further, the release paper roller is rotatably arranged on the frame 1, the release paper roll 9 is tightly sleeved on the release paper roller, the release paper roll 9 is formed by winding the release paper, the second compression roller 10 is rotatably arranged on the frame 1 and located downstream (i.e. right side) of the first compression roller 8, the release paper is located above the semi-processed material, and the release paper and the semi-processed material are pressed through the bottom of the second compression roller 10 so that the release paper is coated on the adhesive layer of the semi-processed material to form a finished material 601. Specifically, the fifth driving motor (not shown in the figure) is installed on the frame 1, the fifth driving motor is coaxially keyed connected with the release paper roller, the fifth driving motor is started to drive the release paper roller to rotate and further drive the release paper roll 9 to rotate synchronously so that the release paper is released, the released release paper is combined with the semi-processed material to form the finished material 601 after passing through the second compression roller 10, and then the finished material 601 continues to move downstream with the rotation of the winding roll 6.

[0040] The double-sided adhesive roller comprises a column 26 rotationally connected with the rack 1, the output shaft of the third driving motor is coaxially keyed connected with the column 26, a plurality of sliding grooves are equidistantly formed on the outer circumferential surface of the column 26, the number of the sliding grooves is at least three, an extrusion plate 28 is elastically and slidably arranged in each of the sliding grooves, a plurality of extrusion springs 31 are arranged in each of the sliding grooves, the plurality of extrusion springs 31 are uniformly distributed in the corresponding sliding grooves, and the plurality of extrusion springs 31 are located between the extrusion plate 28 and the inner wall of the sliding groove. Under the action of the compression force of the extrusion spring 31, the outer end surface of each extrusion plate 28 is tightly attached to the inner wall of the double-sided adhesive roll 3, so that the double-sided adhesive roll 3 is tightly arranged on the double-sided adhesive roller. The column 26, the extrusion plate 28 and the extrusion spring 31 jointly constitute the double-sided adhesive roller. The structure and function of the release paper roller are the same as those of the double-sided adhesive roller, and details are omitted.

[0041] In the embodiment, the tension adjusting member is located downstream of the second compression roller 10, and the finished material 601 enters the tension adjusting member after passing through the second compression roller 10, that is, the material passing through the top of the first directional roller 17, the bottom of the upper roller 13 and the top of the second directional roller 18 in turn is the finished material 601. A third directional roller 27 is also rotationally arranged on the rack 1, and the third directional roller 27 is located downstream of the tension adjusting member and upstream of the material winding roll 6. The finished material 601 passes through the bottom of the third directional roller 27 after passing through the tension adjusting member, and then is wound on the material winding roll 6. Under the action of the third directional roller 27, the direction of the finished material 601 wound on the material winding roll 6 is fixed.

[0042] Further, the tension adjusting member further comprises an elastic member located below the upper roller 13. The elastic member comprises a support block 16 fixedly arranged on the rack 1, a recess 101 is formed in the top of the rack 1, and the support block 16 is fixedly installed in the recess 101. An elastic guide plate 15 is elastically and slidably arranged on the support block 16, the elastic sliding resistance of the guide plate 15 is smaller than that of the movable plate 12, and a lower roller 14 is rotationally arranged on the top of the guide plate 15 and abuts against the bottom of the upper roller 13. The finished material 601 passes between the upper roller 13 and the lower roller 14 so that the upper roller 13 and the lower roller 14 are abutted and extrude the finished material 601 when abutting.

[0043] The above structure of the tension adjusting member plays the following roles: first, when the material gradually relaxes, the movable plate 12 and the upper roller 13 are continuously pushed downward by the elastic force of the compression spring 25 to prevent the material from relaxing too much, and the upper roller 13 continuously moves downward to abut against and press the lower roller 14 to press the finished material 601 between the upper roller 13 and the lower roller 14, so that the pressing force between the material to be processed 201, the adhesive layer and the release paper is increased, and the adhesion between the material to be processed 201, the adhesive layer and the release paper is improved (because the decrease of the tension of the material will reduce the pressing force between the material to be processed 201, the adhesive layer and the release paper, thereby affecting the quality of the finished material 601), so as to improve the quality of the finished material 601;

[0044] Second, when the material continuously relaxes, the upper roller 13 reaches the limit state of downward movement, and the tension of the material cannot be adjusted if the material continues to relax, so the finished material 601 needs to be cut off to prevent defective products caused by the adhesive layer not adhering to the material to be processed 201, and the material upstream of the cutting position after the finished material 601 is cut off will be loose due to the loss of the pulling force provided by the material winding roller 6, which will cause the material to be processed 201 with the adhesive layer and the release paper layer to be separated, and when the material is wound again, the adhesive layer and the release paper layer need to be reattached to the material, thereby increasing the complexity of the work and reducing the work efficiency. Therefore, in the present application, the lower roller 14 and the guide plate 15 are elastically and slidably arranged, and the elastic sliding resistance of the guide plate 15 is smaller than that of the movable plate 12, so that when the material continuously relaxes, the upper roller 13 can press the lower roller 14 to move downward to keep the finished material 601 in a pressed state, and when the upper roller 13 moves to the limit state, the material is cut off, and the finished material 601 is still pressed between the upper roller 13 and the lower roller 14, so that the material upstream of the cutting position after the finished material 601 is cut off does not loosen, and the material upstream of the cutting position remains in the state before the cutting, so that the material to be processed 201 does not separate from the adhesive layer and the release paper layer, and when the material is wound again, the work complexity is greatly reduced, the operation time is reduced, the work efficiency is improved, and the above technical problems are effectively solved.

[0045] Further, the support block 16 is provided with a torsion plate 21 which is elastically rotatable through a first rotating shaft 23, and a torsion spring (not shown in the figure) is arranged between the torsion plate 21 and the first rotating shaft 23. The torsion spring is a prior art and will not be described herein. The torsion plate 21 is elastically rotatable under the action of the torsion spring, and the rotating force provided by the torsion spring to the torsion plate 21 is counterclockwise. An avoiding hole 1601 is formed in the support block 16 and extends through the left and right side surfaces thereof. A clamping plate 22 is rotatably arranged in the avoiding hole 1601 through a second rotating shaft 24. One end of the torsion plate 21 is overlapped with one end of the clamping plate 22, and the other end of the clamping plate 22 is pressed upward against the bottom of the guide plate 15 to support the guide plate 15 under the overlapping force of the torsion plate 21. The elastic rotating force of the torsion plate 21 is used to provide an elastic sliding force for the guide plate 15, and the clamping plate 22 is used to limit the torsion plate 21. The bottom of the guide plate 15 extends into the avoiding hole 1601, and a limiting plate is fixedly arranged on the bottom of the guide plate 15 to prevent the guide plate 15 from being separated from the support block 16.

[0046] Further, one end of the torsion plate 21 away from the clamping plate 22 is fixedly provided with a cutting knife 2101 which is fixedly arranged on the torsion plate 21 through a screw (not shown in the figure). During the process of continuously relaxing the semi-processed material, the upper roller 13 continuously presses the lower roller 14 to make the guide plate 15 continuously slide downward. At this time, the guide plate 15 presses the clamping plate 22 to rotate clockwise, the clockwise rotation of the clamping plate 22 makes the overlapping part of the clamping plate 22 and the torsion plate 21 slide relatively, until the clamping plate 22 is separated from the torsion plate 21. At this time, the torsion plate 21 rotates counterclockwise under the action of the torsion spring due to the loss of the limiting effect of the clamping plate 22, so that the torsion plate 21 drives the cutting knife 2101 to impact the upper roller 13. Under the impact force, the cutting knife 2101 cuts the finished material 601. That is, the guide plate 15 drives the clamping plate 22 to separate from the torsion plate 21 to make the torsion plate 21 drive the cutting knife 2101 to impact the upper roller 13 to cut the finished material 601, so that when the material relaxes to the limit state or approaches the limit state that can be adjusted by the tension adjusting member, the tension adjusting member can automatically cut the finished material 601, without the need for the operator to cut the finished material separately. Even if the operator does not find that the relaxation degree of the material reaches the maximum range that can be adjusted by the tension adjusting member, the finished material 601 can also be automatically cut when needed, so that the defective products of the finished material 601 wound on the material winding roll 6 can be effectively prevented, to ensure the quality of the finished material 601 wound.

[0047] In the embodiment, the cutting knife 2101 is located at the right side (i.e. downstream) of the upper roller 13, and the card plate 22 is divided into a left half and a right half by the second rotating shaft 24 as a boundary line. The overlapping position of the card plate 22 and the torsion plate 21 is located at the left half of the card plate 22, and the abutting position of the card plate 22 and the guide plate 15 is located at the right half of the card plate 22. The weight of the left half of the card plate 22 is greater than that of the right half of the card plate 22, so that when the cutting knife 2101 cuts off the finished material 601, the card plate 22 can be driven to rotate counterclockwise around the second rotating shaft 24 under the action of gravity of the card plate 22 to make the card plate 22 exert an upward force on the guide plate 15, and drive the lower roller 14 to press the upper roller 13 upward, so that the finished material 601 is still pressed between the upper roller 13 and the lower roller 14 after being cut off and will not be separated, and further, the material upstream of the cutting position will not be loose.

[0048] Further, the end surface of the torsion plate 21 away from the cutting knife 2101 is an inclined surface 2102 inclined from bottom to top to the right side. When the card plate 22 is separated from the torsion plate 21 and the torsion plate 21 is reset to overlap the card plate 22 again, only a downward force needs to be applied to the torsion plate 21 to make the torsion plate 21 rotate counterclockwise. At this time, the inclined surface 2102 abuts against the end of the card plate 22 and pushes the card plate 22 to rotate clockwise to make the torsion plate 21 move above the card plate 22. Thereafter, under the action of gravity of the card plate 22, the card plate 22 rotates counterclockwise, and then the force applied to the torsion plate 21 is removed to make the torsion plate 21 overlap the card plate 22 again. One hand can operate, and the operation is more convenient.

[0049] A back adhesive manufacturing process based on the back adhesive production device described above, the back adhesive manufacturing process comprising the following steps:

[0050] S1: setting the initial position of the upper roller 13: first, the material to be processed 201 passes from the bottom of the first direction roller 4, the double-sided tape passes from the bottom of the second direction roller 5, then the two pass through the bottom of the first pressure roller 8 with the adhesive layer of the double-sided tape on the bottom of the material to be processed 201, under the extrusion of the first pressure roller 8, the adhesive layer of the double-sided tape is attached to the material to be processed 201 to form a semi-processed material, and the back layer of the double-sided tape is wound on the back layer roll 7 after passing through the first pressure roller 8, then continue to pull the semi-processed material to the bottom of the second pressure roller 10, at the same time pull the release paper to the bottom of the second pressure roller 10, the release paper passes through the bottom of the second pressure roller with the semi-processed material on top to form a finished material 601, then pull the finished material 601 to pass through the top of the first orientation roller 17, the bottom of the upper roller 13, and the top of the second orientation roller 18 in turn, the material (referring to the finished material 601) passes through the bottom of the upper roller 13, so that the material (referring to the finished material 601) exerts an upward force on the upper roller 13, adjust the force of pulling the material (referring to the finished material 601) to make the movable plate 12 elastically slide to determine the position of the upper roller 13, then the material (referring to the finished material 601) is wound on the winding drum 30 to form a material roll 6, so that the material (finished material 601) maintains the force on the upper roller 13, so that the upper roller 13 is stable at the set position, then start the first drive motor and the second drive motor 32 at the same time, so that the unwinding roll 2 and the winding roll 6 rotate at the same time to make the back adhesive;

[0051] S2: automatic adjustment of material tension: as the unwinding roll 2 continuously unwinds and the winding roll 6 continuously winds, the difference between the linear speed of the unwinding roll 2 and the linear speed of the winding roll 6 changes, when the material gradually relaxes, the movable plate 12 drives the upper roller 13 to move towards the material under the action of the elastic force, so that the material is continuously tensioned, thereby ensuring that the adhesive layer can be attached to the material to be processed 201; when the material gradually tightens, the material (referring to the finished material 601) presses the upper roller 13, driving the upper roller 13 and the movable plate 12 to elastically slide away from the material side to release the material, preventing the material from stretching or breaking.

[0052] S3: automatic cutting when the material is excessively relaxed: in the process of continuous relaxation of the material, the upper roller 13 continuously presses the lower roller 14 to make the guide plate 15 continuously slide downward, the downward sliding of the guide plate 15 extrudes the clamping plate 22 to rotate clockwise, until the clamping plate 22 is separated from the torsion plate 21, at this time the torsion plate 21 rotates counterclockwise under the action of the torsional spring, so that the torsion plate 21 drives the cutting knife 2101 to impact the upper roller 13, under the action of the impact force, the cutting knife 2101 cuts the finished material 601.

[0053] The finished material 601 is cut off, the material located upstream of the cutting position is pressed and fixed by the upper roller 13 and the lower roller 14, so that the material located upstream of the cutting position is not loose, when the material is rolled again, the material located upstream of the cutting position keeps the state before cutting, the processing material 201 will not be separated from the adhesive layer and the release paper layer, when the material is rolled again, the work is greatly reduced, the operation time is reduced, and the work efficiency is improved.

[0054] The above only describes certain 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 understood as limiting the scope of protection of the claims of the present application.

Claims

1. A back adhesive production device, comprising a frame (1), a feed roll (2) and a take-up roll (6) are rotatably arranged on the frame (1), characterized in that: The tension adjusting member is arranged between the feeding roll (2) and the receiving roll (6); The tension adjusting member comprises a movable plate (12) elastically connected with the rack (1), one end of the movable plate (12) is rotatably provided with an upper roller (13) abutting against the material, and the movable plate (12) elastically slides based on the force applied by the material to the upper roller (13); The first directional roller (17) and the second directional roller (18) are rotatably arranged on the rack (1), the upper roller (13) is located between the first directional roller (17) and the second directional roller (18), and the height of the upper roller (13) is lower than the height of the first directional roller (17) and the second directional roller (18); The double-sided adhesive roller is rotatably arranged on the rack (1), the double-sided adhesive roll (3) is tightly arranged on the double-sided adhesive roller, and the double-sided adhesive roll (3) is located above the feeding roll (2); The first compression roller (8) is rotatably arranged on the rack (1), the material (201) to be processed on the feeding roll (2) and the double-sided adhesive on the double-sided adhesive roll (3) are tightly pressed from the bottom of the first compression roller (8) to make the adhesive layer on the double-sided adhesive coated on the material (201) to be processed to form a semi-processed material; The release paper roller is rotatably arranged on the rack (1), the release paper roll (9) is tightly sleeved on the release paper roller, the release paper roll (9) is wound by release paper, and the second compression roller (10) is also rotatably arranged on the rack (1), the release paper is located above the semi-processed material, and the release paper and the semi-processed material are tightly pressed from the bottom of the second compression roller (10) to make the release paper coated on the adhesive layer of the semi-processed material to form a finished material (601); The tension adjusting member further comprises an elastic member located below the upper roller (13), the elastic member comprises a support block (16) fixed on the rack (1), the support block (16) is elastically and slidably provided with a guide plate (15), the top of the guide plate (15) is rotatably provided with a lower roller (14) abutting against the bottom of the upper roller (13), and the finished material (601) passes between the upper roller (13) and the lower roller (14) to make the upper roller (13) and the lower roller (14) extrude the finished material (601) when abutting against each other; The support block (16) is elastically and rotatably provided with a torsion plate (21) through a first rotating shaft (23), the support block (16) is provided with an avoiding hole (1601) penetrating through the left side and the right side thereof, the avoiding hole (1601) is rotatably provided with a clamping plate (22) through a second rotating shaft (24), one end of the torsion plate (21) is overlapped with one end of the clamping plate (22), and the other end of the clamping plate (22) is upwardly extruded against the bottom of the guide plate (15) based on the overlapping force of the torsion plate (21) on the clamping plate (22); One end of the torsion plate (21) away from the clamping plate (22) is fixedly provided with a cutting knife (2101).

2. The back adhesive production apparatus according to claim 1, characterized by: The rack (1) is provided with a bottom-opened box (11), the movable plate (12) is slidably inserted into the box (11) from the bottom of the box (11), a compression spring (25) is connected between the box (11) and the movable plate (12), one end of the compression spring (25) is fixedly connected with the box (11), and the other end is fixedly connected with the movable plate (12).

3. The back adhesive production apparatus according to claim 1, characterized by: The rack (1) is provided with a rubber back roll (7) located above the first compression roller (8), and the rubber back layer of the double-sided adhesive tape on the double-sided adhesive roll (3) is wound by the rubber back roll (7) after passing through the first compression roller (8).

4. A back adhesive making process characterized by: The back adhesive manufacturing process is based on the back adhesive production device in any one of claims 1-3, and the back adhesive manufacturing process Comprises the following steps: S1: setting the initial position of the upper roller (13): passing the material from the bottom of the upper roller (13), making the material generate an upward force on the upper roller (13), adjusting the tension of the material to make the movable plate (12) elastically slide to determine the position of the upper roller (13), and then winding the material on the material winding roll (6) to keep the material on the upper roller (13) and make the upper roller (13) stable at the set position; S2: automatic adjustment of material tension: as the material on the feeding roll (2) is continuously fed and the material on the material winding roll (6) is continuously wound, when the material gradually relaxes, the movable plate (12) drives the upper roller (13) to move towards the material under the action of the elastic force, so that the material is continuously tensioned; when the material gradually tightens, the material presses the upper roller (13), driving the upper roller (13) and the movable plate (12) to elastically slide away from the material to release the tension of the material; S3: automatic cutting when the material is excessively relaxed: in the process of continuously relaxing the material, the upper roller (13) continuously presses the lower roller (14) to make the guide plate (15) continuously slide downward, the downward sliding of the guide plate (15) extrudes the clamping plate (22) to rotate clockwise, until the clamping plate (22) is separated from the torsion plate (21), at this time, the torsion plate (21) rotates counterclockwise under the action of the torsion spring, so that the torsion plate (21) drives the cutting knife (2101) to impact the upper roller (13), under the action of the impact force, the cutting knife (2101) cuts the finished material (601).

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