An adjustable double-sided adhesive positioning and bonding method

Abstract

The application relates to the technical field of double-sided adhesive bonding, and particularly discloses a positioning bonding method for adjustable double-sided adhesive, which comprises a main body, the main body comprises a bottom plate, supporting rods are symmetrically fixedly connected to the upper surfaces of the two sides of the bottom plate, a mold is fixedly connected to the upper surface of the middle part of the bottom plate, a horizontal rod is slidably sleeved with the outer surfaces of the supporting rods, and the positioning bonding method further comprises a bonding mechanism and a buffer mechanism, the bonding mechanism is slidably connected to the horizontal rod, the buffer mechanism is fixedly installed on the bonding mechanism, and the bonding mechanism comprises a sliding seat. Before the extrusion seat is extruded with the parts, the adhesive on the surface of the release paper at the bottom of the extrusion seat is first contacted with a cutter, and the cutter is obliquely moved along the guide strip with the increase of the extrusion force, so that sliding cutting is realized when the adhesive is cut, the stability of cutting is greatly improved, and the bonding quality problem caused by the fact that the adhesives are not completely cut and are adhered to each other when the adhesives are vertically cut is avoided.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of double-sided adhesive bonding, in particular to a positioning and bonding method for adjustable double-sided adhesive. BACKGROUND

[0002] In the fields of electronics, automobiles and precision manufacturing, accurate positioning and bonding of double-sided adhesive is a key process to ensure product quality. The adjustable double-sided adhesive positioning and bonding method realizes high-precision and high-stability bonding of adhesive and part surface through mechanical structure and dynamic control technology. Its core function is to ensure uniform distribution of the adhesive and close combination with the target surface through automatic adjustment and buffer mechanism, and it is widely used in the production of display screens, sensors and other components, which is of great significance to improve product reliability and production efficiency.

[0003] The traditional double-sided adhesive bonding method has significant shortcomings. In terms of positioning accuracy, the positioning method relying on manual or static mechanical devices cannot meet the needs of complex curved surfaces or small-sized parts, resulting in deviation of the bonding position and affecting product performance. The cutting stability is poor, and the straight-up and straight-down cutting method is easy to cause adhesive adhesion or release paper breakage, increasing the rate of defective products. In addition, the traditional equipment lacks dynamic buffer and elastic conveying mechanism, and the release paper is easy to deform or tear under tension, affecting continuous production. The problem of material waste is prominent, and the adhesive that is not bonded cannot be effectively recycled, increasing production cost. The equipment has low adaptability and is difficult to adapt to double-sided adhesive of different thicknesses or materials, limiting its application in diversified production scenarios. These problems restrict the development of traditional bonding technology, and it is urgent to improve its comprehensive performance through adjustable positioning, sliding cutting and elastic buffer and other innovative designs. SUMMARY

[0004] The application provides a positioning and bonding method for adjustable double-sided adhesive, which solves the problems mentioned in the background.

[0005] To achieve the above purpose, the application realizes the following technical scheme: a positioning and bonding method for adjustable double-sided adhesive, comprising a main body, the main body comprising a bottom plate, the two side upper surfaces of the bottom plate being symmetrically fixedly connected with support rods, the middle upper surface of the bottom plate being fixedly connected with a mold, the outer surface of the support rod being slidably sleeved with a horizontal rod, further comprising: a bonding mechanism slidably connected to the horizontal rod; a buffer mechanism fixedly installed on the bonding mechanism; wherein the bonding mechanism comprises a sliding seat, the sliding seat being slidably sleeved on the outer surface of the horizontal rod, the bottom of the sliding seat being fixedly connected with a sealing cover, the two sides of the sealing cover being symmetrically fixedly connected with back plates.

[0006] According to one embodiment of the present invention, three molds are arranged in parallel at fixed intervals. A placement roller is rotatably connected to the inner surface of the back plate. A receiving roller is rotatably connected to the inner surface of the back plate on the side away from the placement roller. A guide rod is rotatably connected to the inner surface of the back plate. The guide rods are arranged in pairs as a group. Two groups of guide rods are symmetrically arranged. An extrusion seat is fixedly connected to the bottom inner surface of the back plate.

[0007] According to one embodiment of the present invention, the bottom surface of the extrusion seat is disposed below the sealing cover, a film roll is fixedly sleeved on the outer surface of the placement roller, the end of the film roll away from the placement roller is wound around the outer surface of the receiving roller through the guide rod and the extrusion seat, the release paper surface of the film roll is in contact with the guide rod and the extrusion seat, and a motor is rotatably connected to the end of the receiving roller, the motor being fixedly installed on the top outer surface of the back plate.

[0008] According to one embodiment of the present invention, the mold includes a mold base, the mold base is fixedly mounted on the upper surface of a base plate, the upper surface of the mold base has a mold cavity, the upper edge surface of the mold base has a through-groove, the mounting groove communicates with the end of the mold cavity, the inner surface of the mounting groove is fixedly connected to a guide strip, the guide strip is inclined, and a cutter is elastically slidably connected to the guide strip.

[0009] According to one embodiment of the present invention, the buffer mechanism includes a first buffer groove, which is symmetrically opened on the inner surface of the back plate at both ends of the receiving roller. The first buffer groove is disc-shaped. A limiting ring is fixedly connected inside the first buffer groove. A fitting groove is opened on the inner surface of the limiting ring. A snap ring is rotatably connected in the fitting groove. A snap block is elastically and movablely fastened on both outer surfaces of the snap ring. The tail of the snap block is convex. A snap groove is opened on both inner surfaces of the limiting ring.

[0010] According to one embodiment of the present invention, an inner ring is fixedly connected to the inner surface of the snap ring, a movable groove is formed on the inner surface of the inner ring, a corrugated plate is fixedly connected in the movable groove, a collar is rotatably connected to the inner surface of the inner ring, the collar is symmetrically fixedly connected to the outer surfaces of both ends of the receiving roller, an extrusion block is fixedly connected to the outer surface of the collar, the outer surface of the extrusion block is fixedly connected to the end of the corrugated plate, and the extrusion block is disposed in the movable groove.

[0011] According to one embodiment of the present invention, the two ends of the placement roller are provided with a second buffer groove, the second buffer groove is symmetrically opened on the inner surface of the back plate at both ends of the placement roller, the inner surface of the second buffer groove is provided with a limiting groove, the second buffer groove is slidably connected to an elastic contraction ring through the limiting groove, the inner end of the limiting groove is fixedly inserted with a misalignment rod, the inner surface of the elastic contraction ring is fixedly connected with a pull rope, and the end of the pull rope away from the elastic contraction ring is fixedly connected with a central ring.

[0012] According to one embodiment of the present invention, a filling groove is formed on the inner surface of the central ring, and a drive ring is rotatably connected to the inner surface of the central ring. The drive ring is symmetrically and fixedly sleeved on the outer surfaces of both ends of the placement roller. An mounting ring is fixedly connected to the middle outer surface of the drive ring. The mounting ring is disposed in the filling groove. An elastic telescopic rod is fixedly connected through the outer surface of the mounting ring. The elastic telescopic rod is configured as a bidirectional rod. A friction ring is fixedly connected to the output end of the elastic telescopic rod. The outer surface of the friction ring is rubbed against the inner surface of the filling groove. A groove is formed on the bottom surface of the extrusion seat near the placement roller. The part to be glued is placed in the mold cavity. Then, the bonding mechanism is moved to the specified X-axis position by adjusting the moving seat. After adjustment, the bonding mechanism is moved down by adjusting the horizontal bar. During the downward movement, the motor is started to fill the release paper surface of the bottom surface of the extrusion seat with glue. Then the motor is stopped. Finally, the extrusion seat contacts and presses the surface of the part, and the glue on the surface of the release paper is glued to the surface of the part.

[0013] This invention provides a positioning and bonding method for adjustable double-sided adhesive, comprising the following steps:

[0014] S1. Secure the film roll onto the placement roller, and pull the opening of the film roll around the guide rod and the extrusion seat to secure it on the collection roller;

[0015] S2. Place the parts that need to be bonded with the adhesive into the mold cavity. Adjust the X-axis position of the bonding mechanism through the slide block. After the adjustment is completed, drive the crossbar to move down and start the motor at the same time so that the release paper and the adhesive move to the lower surface of the extrusion seat. Stop the motor after the movement is completed.

[0016] S3. The downward movement of the crossbar causes the extrusion seat, along with the exposed colloid on its bottom surface, to come into contact with the surface of the part to complete the bonding. The colloid is then cut by the linked cutter. After the cutting is completed, the crossbar is driven to move upward and the part is removed.

[0017] S4. Repeat steps S2 to S3 to complete the cyclic production.

[0018] This invention provides a positioning and bonding method for adjustable double-sided adhesive. It has the following beneficial effects:

[0019] (I) The positioning and bonding method of this adjustable double-sided adhesive is as follows: before the extrusion seat is extruded and the part is extruded, the adhesive on the release paper surface of the bottom of the extrusion seat will first contact the cutter. As the extrusion pressure increases, the cutter will move obliquely downward along the guide strip, thereby achieving sliding cutting when cutting the adhesive, which greatly improves the cutting stability and avoids the bonding quality problem caused by the adhesive not being completely cut and sticking together due to straight cutting.

[0020] (II) The positioning and bonding method of this adjustable double-sided adhesive: When the motor starts, it drives the collecting roller to rotate. The rotation of the collecting roller drives the collars at both ends to rotate, which in turn causes the extrusion block to rotate in the movable groove, that is, to extrude the corrugated plate and cause the corrugated plate to deform. When the corrugated plate can no longer deform, the collar drives the inner ring to start rotating through the extrusion block, that is, to finally drive the snap ring to rotate in the fitting groove. When the collecting roller rotates, it also drives the placement roller to rotate through the release paper, thereby driving the drive ring to rotate. The rotation of the drive ring will synchronously drive the center ring to rotate due to the friction of the friction ring. That is, the rotation of the center ring pulls the pull rope. Due to the setting of the misalignment rod, the other end of the pull rope will pull the elastic shrink ring to start shrinking. When the elastic shrink ring can no longer shrink, the drive ring begins to rotate relative to the central ring. The conveying of the release paper and the adhesive is completed through the cooperation of the receiving roller and the placing roller. When the motor stops, the central ring and the collar begin to reset under the action of elastic force, so that the release paper carrying the adhesive moves back a certain distance. This makes the entire conveying process of the adhesive in an elastic conveying state. The cutter cooperates with the groove on the extrusion seat to give the release paper a certain tension when the adhesive is cut by the cutter, thereby improving the protection effect of the release paper and avoiding the problem of the release paper being cut and broken simultaneously due to excessive tension when the adhesive is cut, which affects the bonding of the continuous adhesive.

[0021] (III) The positioning and bonding method of this adjustable double-sided adhesive, due to the elastic locking block on the outer surface of the locking ring and the locking groove on the inner surface of the limiting ring, ensures that the locking ring can only rotate clockwise around the limiting ring. This allows the ring to rotate only a distance in the reverse direction of the movable groove during ring reset. Once the ring is reset, it cannot continue to rotate counterclockwise. Therefore, when cutting the adhesive, only the placement roller has elastic force, while the receiving roller remains relatively fixed. This ensures that the bonded portion of the adhesive is not subjected to the pulling force of the cutter after bonding to the part surface. This significantly improves the bonding quality of the adhesive and prevents the take-up roller from being pulled and reversed indefinitely, which could cause deformation of the already bonded adhesive during the cutting process due to tensile force, affecting subsequent bonding. By setting an mounting ring on the outer surface of the drive ring, and using an elastic telescopic rod on the mounting ring, the friction ring can always maintain a relatively strong friction state with the center ring under the compression of the elastic force. This greatly improves the working stability of the bonding device and avoids the problem of the film roll being unable to reverse due to the decrease in friction between the drive ring and the center ring after long-term operation. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the internal structure of the sealing cover of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the mold of the present invention;

[0025] Figure 4 This is a schematic diagram showing the positional relationship between the placement roller and the receiving roller of the present invention;

[0026] Figure 5 This is a schematic diagram of the limiting ring and its connection structure of the present invention;

[0027] Figure 6 This is a schematic diagram of the distribution of the misaligned rods of the present invention;

[0028] Figure 7 This is a schematic diagram of the internal structure of the central ring of the present invention;

[0029] Figure 8 This is a schematic diagram of the internal structure of the limiting ring of the present invention.

[0030] In the diagram: 1. Main body; 2. Base plate; 3. Support rod; 4. Mold; 5. Crossbar; 6. Bonding mechanism; 61. Slide; 62. Sealing cover; 63. Back plate; 64. Placement roller; 65. Collection roller; 66. Guide rod; 67. Extrusion seat; 68. Film roll; 69. Motor; 610. Mold base; 611. Mold cavity; 612. Mounting groove; 613. Guide strip; 614. Cutter; 7. Buffer mechanism; 71. Buffer groove No. 1; 72. Limiting ring; 73. Fitting groove; 74. Snap-fit ​​ring; 75. Snap-fit ​​block; 76. Snap-fit ​​groove; 77. Inner ring; 78. Movable groove; 79. Corrugated plate; 710. Collar ring; 711. Extrusion block; 712. Second buffer groove; 713. Limiting groove; 714. Elastic contraction ring; 715. Misalignment rod; 716. Pull rope; 717. Center ring; 718. Filling groove; 719. Drive ring; 720. Mounting ring; 721. Elastic telescopic rod; 722. Friction ring. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] First embodiment: as follows Figures 1 to 8 As shown, the present invention provides a technical solution: an adjustable double-sided adhesive positioning and bonding method, comprising a main body 1, the main body 1 including a base plate 2, support rods 3 symmetrically fixedly connected to the upper surfaces of both sides of the base plate 2, a mold 4 fixedly connected to the upper surface of the middle part of the base plate 2, and a crossbar 5 slidably sleeved on the outer surface of the support rods 3, and further comprising:

[0033] The bonding mechanism 6 is slidably connected to the crossbar 5;

[0034] Buffer mechanism 7 is fixedly installed on fitting mechanism 6;

[0035] The bonding mechanism 6 includes a slide 61, which is slidably sleeved on the outer surface of the crossbar 5. A sealing cover 62 is fixedly connected to the bottom of the slide 61, and a back plate 63 is symmetrically fixedly connected to both sides of the sealing cover 62.

[0036] The mold 4 has three parallel molds with fixed spacing. The inner surface of the back plate 63 is rotatably connected to the placement roller 64. The inner surface of the back plate 63 away from the placement roller 64 is rotatably connected to the receiving roller 65. The inner surface of the back plate 63 is rotatably connected to the guide rod 66. The guide rods 66 are arranged in pairs as a group. There are two groups of guide rods 66 symmetrically arranged. The bottom inner surface of the back plate 63 is fixedly connected to the extrusion seat 67.

[0037] The bottom surface of the extrusion seat 67 is located below the sealing cover 62. A film roll 68 is fixedly sleeved on the outer surface of the placement roller 64. The end of the film roll 68 away from the placement roller 64 is wound around the outer surface of the receiving roller 65 through the guide rod 66 and the extrusion seat 67. The release paper surface of the film roll 68 is in contact with the guide rod 66 and the extrusion seat 67. A motor 69 is rotatably connected to the end of the receiving roller 65. The motor 69 is fixedly installed on the top outer surface of the back plate 63.

[0038] The mold 4 includes a mold base 610, which is fixedly installed on the upper surface of the base plate 2. A mold cavity 611 is formed on the upper surface of the mold base 610. An installation groove 612 is formed through the upper surface of the edge of the mold base 610. The installation groove 612 communicates with the end of the mold cavity 611. A guide strip 613 is fixedly connected to the inner surface of the installation groove 612. The guide strip 613 is inclined and a cutter 614 is elastically slidably connected to the guide strip 613.

[0039] Second embodiment: as follows Figures 1 to 8 As shown, the buffer mechanism 7 includes a first buffer groove 71, which is symmetrically opened on the inner surface of the back plate 63 at both ends of the receiving roller 65. The first buffer groove 71 is disc-shaped. A limiting ring 72 is fixedly connected inside the first buffer groove 71. A fitting groove 73 is opened on the inner surface of the limiting ring 72. A snap ring 74 is rotatably connected inside the fitting groove 73. A snap block 75 is elastically and movablely fastened on both outer surfaces of the snap ring 74. The tail of the snap block 75 is convex. A snap groove 76 is opened on both inner surfaces of the limiting ring 72.

[0040] An inner ring 77 is fixedly connected to the inner surface of the snap ring 74. A movable groove 78 is opened on the inner surface of the inner ring 77. A corrugated plate 79 is fixedly connected in the movable groove 78. A collar 710 is rotatably connected to the inner surface of the inner ring 77. The collar 710 is symmetrically fixedly connected to the outer surfaces of both ends of the receiving roller 65. An extrusion block 711 is fixedly connected to the outer surface of the collar 710. The outer surface of the extrusion block 711 is fixedly connected to the end of the corrugated plate 79. The extrusion block 711 is set in the movable groove 78.

[0041] The two ends of the placement roller 64 are provided with second buffer grooves 712. The second buffer grooves 712 are symmetrically opened on the inner surface of the back plate 63 at both ends of the placement roller 64. The inner surface of the second buffer groove 712 is provided with a limiting groove 713. The second buffer groove 712 is slidably connected to an elastic contraction ring 714 through the limiting groove 713. The inner end of the limiting groove 713 is fixedly inserted with a misalignment rod 715. The inner surface of the elastic contraction ring 714 is fixedly connected with a pull rope 716. The end of the pull rope 716 away from the elastic contraction ring 714 is fixedly connected with a central ring 717.

[0042] A filling groove 718 is provided on the inner surface of the central ring 717. A drive ring 719 is rotatably connected to the inner surface of the central ring 717. The drive ring 719 is symmetrically and fixedly sleeved on the outer surfaces of both ends of the placement roller 64. An installation ring 720 is fixedly connected to the middle outer surface of the drive ring 719. The installation ring 720 is set in the filling groove 718. An elastic telescopic rod 721 is fixedly connected through the outer surface of the installation ring 720. The elastic telescopic rod 721 is set as a bidirectional rod. A friction ring 722 is fixedly connected to the output end of the elastic telescopic rod 721. The outer surface of the friction ring 722 is rubbed against the inner surface of the filling groove 718. A groove is provided on the bottom surface of the extrusion seat 67 near the placement roller 64.

[0043] A positioning and bonding method for adjustable double-sided adhesive includes the following steps:

[0044] S1. Fix the film roll 68 onto the placement roller 64, and pull the opening of the film roll 68 around the guide rod 66 and the extrusion seat 67 to fix it onto the receiving roller 65.

[0045] S2. Place the parts that need to be bonded with the adhesive in the mold cavity 611. Adjust the X-axis position of the bonding mechanism 6 by sliding block 61. After the adjustment is completed, drive the crossbar 5 to move down and start the motor 69 at the same time so that the release paper and the adhesive move to the lower surface of the extrusion seat 67. After the movement is completed, stop the motor 69.

[0046] S3, the downward movement of the crossbar 5 causes the extrusion seat 67, along with the exposed adhesive on its bottom surface, to come into contact with the surface of the part to complete the bonding, and the adhesive is cut by the linked cutter 614. After the cutting is completed, the crossbar 5 is driven to move upward and the part is removed.

[0047] S4. Repeat steps S2 to S3 to complete the cyclic production.

[0048] During operation, the parts to be glued are placed in the mold cavity 611. Then, the bonding mechanism 6 is moved to the designated X-axis position by adjusting the moving seat. After adjustment, the bonding mechanism 6 is moved downward by adjusting the crossbar 5. During the downward movement, the motor 69 is started to fill the release paper surface on the bottom of the extrusion seat 67 with adhesive. Then, the motor 69 is stopped, and finally, the extrusion seat 67 contacts the surface of the part and presses it, adhering the adhesive on the release paper surface to the part surface. Before the extrusion seat 67 presses against the part, the adhesive on the release paper surface on the bottom of the extrusion seat 67 first contacts the cutter 614. As the extrusion pressure increases, the cutter 614 moves diagonally downward along the guide strip 613, thereby achieving sliding cutting when cutting the adhesive, which greatly improves the cutting stability. To avoid adhesion problems caused by incomplete cutting of the adhesive materials due to straight-up and down cutting, the motor 69 drives the collecting roller 65 to rotate. The rotation of the collecting roller 65 drives the collars 710 at both ends to rotate, which in turn causes the extrusion block 711 to rotate in the movable groove 78, thus extruding the corrugated plate 79 and causing it to deform. When the corrugated plate 79 can no longer deform, the collars 710 drive the inner ring 77 to rotate through the extrusion block 711, which in turn drives the snap ring 74 to rotate in the fitting groove 73. The rotation of the collecting roller 65 also drives the placement roller 64 to rotate through the release paper, thereby driving the drive ring 719 to rotate. The rotation of the drive ring 719 is synchronized by the friction of the friction ring 722. The rotating center ring 717 pulls the pull rope 716, which in turn pulls the elastic shrink ring 714 due to the misalignment rod 715. When the elastic shrink ring 714 can no longer shrink, the drive ring 719 begins to rotate relative to the center ring 717. The release paper and adhesive are conveyed through the cooperation of the receiving roller 65 and the placing roller 64. When the motor 69 stops, the center ring 717 and the collar 710 begin to reset under the action of elasticity, so that the release paper carrying the adhesive moves back a certain distance. This ensures that the entire conveying process is in an elastic conveying state, and the cutter 614 cooperates with the groove on the extrusion seat 67 to convey the adhesive from the center ring 716. This design imparts a certain tension to the release paper when the adhesive is cut by the cutter 614, thereby improving the protection of the release paper and preventing it from being cut and broken due to excessive tension, which would affect the adhesion of the continuous adhesive. Furthermore, because the outer surface of the locking ring 74 has an elastic locking block 75 and the inner surface of the limiting ring 72 has a locking groove 76, the locking ring 74 can only rotate clockwise around the limiting ring 72. This ensures that when the collar 710 resets, it can only rotate counterclockwise by the distance of the movable groove 78. Once the collar 710 has reset, it cannot continue to rotate counterclockwise. Therefore, when cutting the adhesive, only one side of the placement roller 64 has elastic force, while the receiving roller 65 remains relatively fixed.This ensures that the bonded portion of the adhesive, after being bonded to the part surface, is not subjected to the pulling force of the cutter 614, thus significantly improving the bonding quality of the adhesive. It also prevents the storage roller 65 from being infinitely pulled and reversed, which could cause deformation of the already bonded adhesive under pulling force during adhesive cutting, affecting subsequent bonding. Furthermore, by setting a mounting ring 720 on the outer surface of the drive ring 719, and using the elastic telescopic rod 721 on the mounting ring 720, the friction ring 722 maintains a relatively strong frictional state with the central ring 717 under the compression of the elastic force. This significantly improves the working stability of the bonding device 1 and prevents the film roll 68 from failing to reverse due to a decrease in friction between the drive ring 719 and the central ring 717 after prolonged operation.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0050] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A positioning and bonding method for adjustable double-sided adhesive, comprising a main body (1), characterized in that: The main body (1) includes a base plate (2), with support rods (3) symmetrically fixedly connected to the upper surfaces of both sides of the base plate (2), and a mold (4) fixedly connected to the upper surface of the middle part of the base plate (2). A crossbar (5) is slidably sleeved on the outer surface of the support rods (3). It also includes: A bonding mechanism (6) is slidably connected to a crossbar (5); A buffer mechanism (7) is fixedly installed on the fitting mechanism (6); The bonding mechanism (6) includes a slide (61), which is slidably sleeved on the outer surface of the crossbar (5). A sealing cover (62) is fixedly connected to the bottom of the slide (61), and a back plate (63) is symmetrically fixedly connected to both sides of the sealing cover (62). The mold (4) has three parallel molds with a fixed spacing. The inner surface of the back plate (63) is rotatably connected to a placement roller (64). The inner surface of the back plate (63) away from the placement roller (64) is rotatably connected to a receiving roller (65). The inner surface of the back plate (63) is rotatably connected to a guide rod (66). The guide rods (66) are arranged in pairs. Two sets of guide rods (66) are symmetrically arranged. The bottom inner surface of the back plate (63) is fixedly connected to an extrusion seat (67). The mold (4) includes a mold base (610), which is fixedly installed on the upper surface of the base plate (2). A mold cavity (611) is opened on the upper surface of the mold base (610). An installation groove (612) is opened through the upper surface of the edge of the mold base (610). The installation groove (612) is connected to the end of the mold cavity (611). A guide strip (613) is fixedly connected to the inner surface of the installation groove (612). The guide strip (613) is inclined. A cutter (614) is elastically slidably connected to the guide strip (613). Before the extrusion seat presses against the part, the adhesive on the release paper surface of the bottom of the extrusion seat will first come into contact with the cutter, and as the extrusion pressure increases, the cutter will move obliquely downward along the guide strip, thereby achieving sliding cutting when cutting the adhesive. When the motor starts, it drives the collecting roller to rotate. A locking groove is provided through a limiting ring, which connects to a snap-fit ​​ring. The snap-fit ​​ring connects to an inner ring. A movable groove connects to a corrugated plate, the inner ring connects to a collar, the collar connects to an extrusion block, the extrusion block connects to the corrugated plate, and the limiting groove connects to a misalignment rod. A pull rope is connected to the inner surface of the elastic shrink ring, and the pull rope connects to a central ring. The rotation of the collecting roller drives the collars at both ends to rotate, which in turn causes the extrusion block to rotate within the movable groove, thus extruding and deforming the corrugated plate. When the corrugated plate can no longer deform, the collar drives the inner ring to rotate via the extrusion block, ultimately causing the snap-fit ​​ring to rotate within the locking groove. The rotation of the collecting roller also drives the placement roller to rotate via the release paper, thereby driving the drive ring to rotate. The motor drives the central ring to rotate synchronously due to the friction of the friction ring. This rotation of the central ring pulls the pull rope, and the pull rope, due to the misalignment rod, pulls the elastic shrink ring to shrink. When the elastic shrink ring can no longer shrink, the drive ring begins to rotate relative to the central ring. The release paper and adhesive are conveyed through the cooperation of the receiving roller and the placing roller. When the motor stops, the central ring and the collar begin to reset under the action of elasticity, so that the release paper carrying the adhesive moves back a certain distance. This ensures that the entire conveying process is in an elastic conveying state. The cutter and the groove on the extrusion seat cooperate to give the release paper a certain tension when the adhesive is cut by the cutter. Includes the following steps: S1. Fix the film roll (68) on the placement roller (64) and pull the opening of the film roll (68) around the guide rod (66) and the extrusion seat (67) to fix it on the storage roller (65); S2. Place the parts that need to be bonded with the adhesive in the mold cavity (611), adjust the X-axis position of the bonding mechanism (6) by the slide (61), after the adjustment is completed, drive the crossbar (5) to move down and start the motor (69) at the same time so that the release paper and the adhesive move to the lower surface of the extrusion seat (67), and stop the motor (69) after the movement is completed. S3. The downward movement of the crossbar (5) causes the extrusion seat (67) and the exposed colloid on its bottom surface to come into contact with the surface of the part to complete the bonding. The colloid is cut by the linked cutter (614). After the cutting is completed, the crossbar (5) is driven to move upward and the part is taken out. S4. Repeat steps S2 to S3 to complete the cyclic production.

2. The positioning and bonding method for an adjustable double-sided adhesive as described in claim 1, characterized in that: The bottom surface of the extrusion seat (67) is located below the sealing cover (62). A film roll (68) is fixedly sleeved on the outer surface of the placement roller (64). The end of the film roll (68) away from the placement roller (64) is wound around the outer surface of the receiving roller (65) through the guide rod (66) and the extrusion seat (67). The release paper surface of the film roll (68) is in contact with the guide rod (66) and the extrusion seat (67). A motor (69) is rotatably connected to the end of the receiving roller (65). The motor (69) is fixedly installed on the top outer surface of the back plate (63).

3. The positioning and bonding method for an adjustable double-sided adhesive according to claim 2, characterized in that: The buffer mechanism (7) includes a first buffer groove (71), which is symmetrically opened on the inner surface of the back plate (63) at both ends of the receiving roller (65). The first buffer groove (71) is disc-shaped. A limiting ring (72) is fixedly connected inside the first buffer groove (71). A fitting groove (73) is opened on the inner surface of the limiting ring (72). A snap ring (74) is rotatably connected inside the fitting groove (73). A snap block (75) is elastically and movablely fastened on both outer surfaces of the snap ring (74). The tail of the snap block (75) is convex. A snap groove (76) is opened on both inner surfaces of the limiting ring (72).

4. The positioning and bonding method for an adjustable double-sided adhesive as described in claim 3, characterized in that: The inner surface of the snap ring (74) is fixedly connected to an inner ring (77), and the inner surface of the inner ring (77) is provided with a movable groove (78). A corrugated plate (79) is fixedly connected in the movable groove (78). A collar (710) is rotatably connected to the inner surface of the inner ring (77). The collar (710) is symmetrically fixedly connected to the outer surfaces of both ends of the receiving roller (65). An extrusion block (711) is fixedly connected to the outer surface of the collar (710). The outer surface of the extrusion block (711) is fixedly connected to the end of the corrugated plate (79). The extrusion block (711) is set in the movable groove (78).

5. The positioning and bonding method for an adjustable double-sided adhesive according to claim 4, characterized in that: The placement roller (64) is provided with a second buffer groove (712) at both ends. The second buffer groove (712) is symmetrically opened on the inner surface of the back plate (63) at both ends of the placement roller (64). A limiting groove (713) is opened on the inner surface of the second buffer groove (712). An elastic shrink ring (714) is slidably connected to the second buffer groove (712) through the limiting groove (713). A misalignment rod (715) is fixedly inserted into the inner end of the limiting groove (713). A pull rope (716) is fixedly connected to the inner surface of the elastic shrink ring (714). A central ring (717) is fixedly connected to the end of the pull rope (716) away from the elastic shrink ring (714).

6. The positioning and bonding method for an adjustable double-sided adhesive according to claim 5, characterized in that: The inner surface of the central ring (717) is provided with a filling groove (718). The inner surface of the central ring (717) is rotatably connected with a drive ring (719). The drive ring (719) is symmetrically fixedly sleeved on the outer surfaces of both ends of the placement roller (64). The middle outer surface of the drive ring (719) is fixedly connected with an installation ring (720). The installation ring (720) is set in the filling groove (718). The outer surface of the installation ring (720) is fixedly connected with an elastic telescopic rod (721). The elastic telescopic rod (721) is set as a bidirectional rod. The output end of the elastic telescopic rod (721) is fixedly connected with a friction ring (722). The outer surface of the friction ring (722) is rubbed against the inner surface of the filling groove (718). The bottom surface of the extrusion seat (67) near the placement roller (64) is provided with a groove.

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