Positioning mechanism of vacuum packaging film laminating machine

Abstract

The utility model relates to the technical field of vacuum packaging film laminating machines, and provides a positioning mechanism of a vacuum packaging film laminating machine, which is arranged on a conveying belt at the input end of the vacuum film laminating machine and comprises positioning guide plates, a mounting component with a leveling function, a guide shaft and an adjusting component, the installation assembly is arranged between the positioning guide plates and the conveying belt and used for accurately installing the use positions of the positioning guide plates, the opposite sides of the two positioning guide plates of the guide shafts are provided with containing grooves, the multiple rotatable guide shafts are installed in the containing grooves, and the adjusting assembly is arranged on the two positioning guide plates and used for adjusting the use positions of the positioning guide plates. The distance adjusting device is used for adjusting the distance between the two positioning guide plates and is used for solving the problem that in the prior art, after a plate is placed on a conveying belt, the plate deviates from the conveying center position along with conveying of the conveying belt, and film releasing and film covering are affected.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum packaging laminating machines, and specifically, to a positioning mechanism of a vacuum packaging laminating machine. Background Art

[0002] Laminating machines can be divided into two categories: immediate coating laminating machines and pre-coated laminating machines. They are special equipment for paper, board, and film laminating. After being pressed by a rubber roller and a heating roller, they are combined together to form a paper-plastic composite board. The operation of this type of equipment includes three parts: gluing, drying, and hot pressing. The operation requirements are relatively high. The advantage is that the finished product quality is reliable. However, it has a fatal drawback that harmful gases to human health will be generated during the processing of oil-based adhesives. Therefore, this technology has been completely prohibited in developed countries such as Europe and the United States. Water-based adhesives are more environmentally friendly than oil-based adhesives, but the cost is relatively higher. They are suitable for laminating color printing, packaging paper, soft sheet materials, soft rubber plates, etc., making their surfaces bright, colorful, and waterproof.

[0003] During the production process of a board, a vacuum packaging laminating machine is required to laminate the board. The vacuum laminating machine mainly includes a machine body with a conveyor belt, a film feeding mechanism, and a laminating mechanism arranged on the machine body. The board to be laminated is conveyed to the lower part of the film feeding mechanism and the lower part of the laminating mechanism through the conveyor belt to achieve the purpose of film feeding and laminating. Among them, the film feeding mechanism is used to release the packaging film roll. The laminating mechanism has a sensing and recognition function, which can identify whether the board has reached the lower part of the laminating mechanism. When the board reaches the lower part of the laminating mechanism, the conveyor belt stops running, and the laminating mechanism starts to work to hot press the board covered with the packaging film to complete the laminating operation.

[0004] During the production process of a vacuum packaging laminating machine, the precise positioning of the board is the core link to ensure the laminating quality. However, when the board is placed on the conveyor belt, it is placed rather randomly, resulting in the board being easily deviated from the center position of the conveyor belt. As a result, it is difficult to ensure that the board and the film roll on the unwinding mechanism are in a parallel state. When it enters the lower part of the laminating mechanism, due to its random placement, an inclination angle is generated between the board and the unwinding mechanism. Under the laminating action of the laminating mechanism on the packaging film covering the board, the edge of the board will not be laminated, or due to the inclination of the board, the corner position deviates from the laminating range of the laminating mechanism, and finally the packaging film cannot be completely laminated on the board. Therefore, it is necessary to center-align the board placed on the conveyor belt and position it at the center of the conveyor belt. In the prior art, generally, the board placed on the conveyor belt is positioned manually. According to statistics, the laminating defects caused by the positioning deviation of the board account for 32% of the total production scrap rate, and about 75% of the defects are due to the error of manual positioning. This positioning method not only increases the labor but also has inaccurate positioning, resulting in uneven laminating edges or missed lamination, and poor practicability. Content of the Utility Model

[0005] The present utility model proposes a positioning mechanism for a vacuum packaging laminating machine to solve the problem that after a board is placed on a conveyor belt, as the conveyor belt conveys the board, the board deviates from the center position of the conveyor, affecting film placement and laminating in the prior art.

[0006] The technical solution of the present utility model is as follows: A positioning mechanism for a vacuum packaging laminating machine is arranged on the conveyor belt at the input end of the vacuum laminating machine, and includes a positioning guide plate, an installation component with a leveling function, a guide shaft, and an adjustment component. The positioning guide plates are symmetrically arranged on both sides of the input end of the conveyor belt. The installation component is arranged between the positioning guide plate and the conveyor belt and is used to accurately install the use position of the positioning guide plate. A placement groove is arranged on the opposite side of the two positioning guide plates, and a plurality of rotatable guide shafts are installed in the placement groove. The adjustment component is arranged on the two positioning guide plates and is used to adjust the distance between the two positioning guide plates.

[0007] Further, the installation component includes a first sliding seat, a support shaft, a second sliding seat, a mounting plate, a positioning plate, and a setscrew. The first sliding seat is slidably installed on the side wall of the conveyor belt. The support shaft is threadedly installed on the first sliding seat. The second sliding seat is arranged on both sides of the first sliding seat and is slidably installed on the side wall of the conveyor belt. The bottom of the mounting plate is rotatably sleeved on the support shaft through a shaft hole. The positioning plate is longitudinally connected to the second sliding seat. The setscrew is threadedly connected to both sides of the mounting plate.

[0008] Furthermore, the adjustment component includes an n-shaped frame and a driving component. One end of the n-shaped frame penetrates through the mounting plate and is vertically connected to the positioning guide plate. The n-shaped frame is vertically arranged with the mounting plate, and a sleeve for the n-shaped frame to slide is arranged on the mounting plate. The other end of the n-shaped frame is horizontally arranged below the conveyor belt. There is a gap between the parts of the two n-shaped frames located below the conveyor belt. The driving component is arranged between the two groups of n-shaped frames and is used to drive the two groups of n-shaped frames to move relative to each other.

[0009] Preferably, the driving component includes an electric cylinder, a gear, and a bracket. The electric cylinder is arranged below the conveyor belt and is horizontally arranged with the n-shaped frame. The gear is arranged in the gap, and teeth meshing with the gear are arranged on the side of the n-shaped frame close to the gear. The gear is rotatably arranged on the bracket. The output end of the electric cylinder is connected to the end of the lower n-shaped frame among the two n-shaped frames.

[0010] More preferably, in order to facilitate the installation of the first sliding seat and the second sliding seat, both the first sliding seat and the second sliding seat are of a T-shaped structure, and T-shaped sliding grooves matching the shapes of the first sliding seat and the second sliding seat are arranged on the side wall of the conveyor belt.

[0011] To stably fix the installed slide base one and slide base two, preferably, it further includes locking screws. Threaded holes are provided on both sides of the slide base one and the slide base two. Bar-shaped grooves are horizontally provided on both sides of the T-shaped chute, and the bar-shaped grooves communicate with the T-shaped chute. The locking screws pass through the bar-shaped grooves and are screwed into the threaded holes.

[0012] On the basis of the foregoing solution, the guide shaft includes a shaft body, a mounting block, and a telescopic block. Connecting shafts are rotatably installed at both ends of the shaft body. The mounting block is installed on the connecting shaft on the lower side of the shaft body, and the telescopic block is installed on the connecting shaft on the upper side of the shaft body.

[0013] On the basis of the foregoing solution, further, a cavity is provided inside the telescopic block, a spring is provided inside the cavity, a limiting plate is provided on the lower side of the spring, and the connecting shaft on the upper side of the shaft body slidably penetrates the bottom side wall of the cavity and is connected to the limiting plate.

[0014] Preferably, the limiting plate is square, and the limiting plate is slidably matched with the cavity.

[0015] To facilitate the disassembly of the guide shaft, a plurality of insertion holes suitable for the insertion of the mounting block and the telescopic block are provided on the inner top wall and the inner bottom wall of the placement groove. A push rod is slidably provided on the top of the positioning guide plate through a sliding hole. The outer diameter of the push rod gradually increases from top to bottom. The sliding hole communicates with the insertion hole, and a handle is provided on the top of the drag rod.

[0016] The beneficial effects of the present utility model are as follows:

[0017] In the present utility model, by installing positioning guide plates on both sides of the transmission belt at the input end of the vacuum laminating machine, the plates entering the interior of the vacuum laminating machine can be pushed to the center position of the conveyor belt. Thus, when it stops and is recognized below the laminating mechanism, it can be placed neatly below the laminating mechanism. The guide shaft can reduce the wear of the plates and enhance the guiding effect on the conveyor belt, enabling it to effectively enter the center position of the vacuum laminating machine for laminating. The adjusting component can adjust the distance between the two positioning guide plates to be suitable for guiding different plates and enhance adaptability. At the same time, through the installation component, not only can the positioning guide plates be effectively installed on the conveyor belt, but it also has a leveling function and can adjust the square shape of the installed positioning guide plates. The two positioning guide plates are parallel and parallel to the conveying direction of the conveyor belt, ensuring the positioning accuracy of the plates during conveyance on the conveyor belt. By using the mechanized cooperating positioning guide plates to position and guide different plates on the conveyor belt, compared with manual operation, its accuracy is higher and the efficiency is higher, improving the laminating effect of the plates. Description of the Drawings

[0018] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] Figure 1 It is a schematic structural diagram of the present utility model;

[0020] Figure 2 It is a schematic structural diagram of the cooperation of the placing block, positioning and guiding plate, n-shaped frame, electric cylinder and gear in the present utility model;

[0021] Figure 3 It is a schematic structural diagram of the decomposition state of the mounting plate, set screw and positioning plate in the present utility model;

[0022] Figure 4 It is a schematic structural diagram of the decomposition state of the mounting plate, support shaft and sliding seat one in the present utility model;

[0023] Figure 5 It is a schematic structural diagram of the cooperation of two groups of n-shaped frames with the gear, electric cylinder and bracket in the present utility model;

[0024] Figure 6 It is a schematic structural diagram of the cooperation of the guiding shaft in the local placing groove in the present utility model;

[0025] Figure 7 It is a schematic structural diagram of the internal cross-section of the spring and the limiting plate in the telescopic block in the present utility model;

[0026] Figure 8 For the present utility model Figure 1 The partial enlarged structural diagram at position A;

[0027] Figure 9 For the present utility model Figure 5 The partial enlarged structural diagram at position B.

[0028] In the figure: 1, vacuum laminating machine; 2, conveyor belt; 3, positioning and guiding plate; 4, sliding seat one; 5, support shaft; 6, sliding seat two; 7, mounting plate; 8, positioning plate; 9, set screw; 10, T-shaped chute; 11, strip-shaped groove; 12, locking screw; 13, n-shaped frame; 14, electric cylinder; 15, gear; 16, bracket; 17, placing block; 18, sliding frame; 19, limiting block; 20, shaft body; 21, mounting block; 22, telescopic block; 23, spring; 24, limiting plate; 25, push rod; 26, handle. Specific embodiments

[0029] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0030] As Figures 1-9 shown, this embodiment proposes a positioning mechanism for a vacuum packaging laminating machine, which is arranged on the conveyor belt 2 at the input end of the vacuum laminating machine 1, and includes a positioning guide plate 3, an installation component with a leveling function, a guide shaft, and an adjustment component. The positioning guide plates 3 are symmetrically arranged on both sides of the input end of the conveyor belt 2. The installation component is arranged between the positioning guide plate 3 and the conveyor belt 2 and is used to accurately install the use position of the positioning guide plate 3. A placement groove is provided on one side of the two positioning guide plates 3 facing each other, and a plurality of rotatable guide shafts are installed in the placement groove. The adjustment component is arranged on the two positioning guide plates 3 and is used to adjust the distance between the two positioning guide plates 3. By installing the positioning guide plates 3 on both sides of the conveyor belt 2 at the input end of the vacuum laminating machine 1, the board entering the interior of the vacuum laminating machine 1 can be pushed to the center position of the conveyor belt 2. Thus, when it stops after being recognized under the laminating mechanism (the vacuum laminating machine is a well-known device, and the present utility model does not change its internal structure and working principle. Only a positioning mechanism is added at the entrance of the conveyor belt, and the sensing and recognition function on the vacuum laminating mechanism is a built-in function of the vacuum laminating machine 1 and is well-known technology to those skilled in the art), it can be placed neatly under the laminating mechanism. The guide shaft can reduce the wear on the board and enhance its guiding effect on the conveyor belt 2, enabling it to effectively enter the center position of the vacuum laminating machine 1 for laminating. The adjustment component can adjust the distance between the two positioning guide plates 3 to be suitable for guiding different boards and enhance adaptability. At the same time, through the installation component, not only can the positioning guide plate 3 be effectively installed on the conveyor belt 2, but it also has a leveling function and can adjust the square of the installed positioning guide plate 3. The two positioning guide plates 3 are parallel and parallel to the conveying direction of the conveyor belt 2, ensuring the positioning accuracy of the board during transportation on the conveyor belt 2. By using the mechanized positioning guide plate 3 to position and guide different boards on the conveyor belt 2, compared with manual operation, its accuracy is higher and the efficiency is higher, improving the laminating effect of the board.

[0031] As Figures 3-4As shown, the installation component includes a first sliding seat 4, a support shaft 5, a second sliding seat 6, a mounting plate 7, a positioning plate 8 and a setscrew 9. The first sliding seat 4 is slidably mounted on the side wall of the conveyor belt 2. The support shaft 5 is threadedly mounted on the first sliding seat 4, which facilitates the installation and disassembly of the support shaft 5. The second sliding seat 6 is arranged on both sides of the first sliding seat 4 and is slidably mounted on the side wall of the conveyor belt 2 (the side wall of the conveyor belt 2 mentioned in the present utility model refers to the mounting bracket 16 of the conveyor belt 2). The bottom of the mounting plate 7 is rotatably sleeved on the support shaft 5 through a shaft hole. The positioning plate 8 is longitudinally connected to the second sliding seat 6. The setscrews 9 are threadedly connected to both sides of the mounting plate 7. In order to facilitate the installation of the first sliding seat 4 and the second sliding seat 6, both the first sliding seat 4 and the second sliding seat 6 are in a T-shaped structure. T-shaped chutes matching the shapes of the first sliding seat 4 and the second sliding seat 6 are provided on the side wall of the conveyor belt 2. In order to stably fix the installed first sliding seat 4 and the second sliding seat 6, a locking screw 12 is further included. Threaded holes are provided on both sides of the first sliding seat 4 and the second sliding seat 6. Strip-shaped grooves 11 are horizontally provided on both sides of the T-shaped chute. The strip-shaped grooves 11 communicate with the T-shaped chute. The locking screw 12 passes through the strip-shaped groove 11 and is screwed into the threaded hole. Through the sliding cooperation between the first sliding seat 4 and the second sliding seat 6 and the T-shaped chute, the installation and use positions of the first sliding seat 4 and the second sliding seat 6 can be adjusted. Through the action of the locking screw 12, the first sliding seat 4 or the second sliding seat 6 can be locked and fixed on the side wall of the conveyor belt 2. Then, by rotating the setscrews 9 on both sides, the parallelism between the mounting plate 7 and the conveying direction of the conveyor belt 2 can be adjusted with the support shaft 5 as the center.

[0032] As Figure 2 and Figure 5As shown, the adjusting component includes an n-shaped frame 13 and a driving member. One end of the n-shaped frame 13 penetrates through the mounting plate 7 and is vertically connected to the positioning and guiding plate 3. The n-shaped frame 13 is vertically arranged with the mounting plate 7, and a sleeve for the n-shaped frame 13 to slide is provided on the mounting plate 7. The other end of the n-shaped frame 13 is horizontally arranged below the conveyor belt 2. There is a gap between the parts of the two n-shaped frames 13 located below the conveyor belt 2. The driving member is arranged between the two n-shaped frames 13 and is used to drive the two n-shaped frames 13 to move relative to each other. The driving member includes an electric cylinder 14, a gear 15, and a bracket 16. The electric cylinder 14 is arranged below the conveyor belt 2 and is horizontally arranged with the n-shaped frame 13. The gear 15 is arranged in the gap, and teeth meshing with the gear 15 are provided on the side of the n-shaped frame 13 close to the gear 15. The gear 15 is rotatably arranged on the bracket 16. The output end of the electric cylinder 14 is connected to the end of the lower n-shaped frame 13 among the two n-shaped frames 13. Since the n-shaped frame 13 is vertically connected to the positioning and guiding plate 3 and the n-shaped frame 13 is in vertical sliding fit with the mounting plate 7, the positioning and guiding plate 3 is parallel to the mounting plate 7. When the mounting plate 7 is adjusted to be parallel to the transmission direction of the conveyor belt 2, the positioning and guiding plate 3 is parallel to the transmission direction of the conveyor belt 2. Through the telescopic property of the electric cylinder 14, the n-shaped frame 13 can be driven to slide along the direction of sliding with the sleeve. Under the action of the gear 15, the two n-shaped frames 13 can be moved closer to or away from each other, so as to adjust the distance between the two positioning and guiding plates 3 to adapt to the center positioning and guiding of plates with different widths;

[0033] It should be noted that a placing block 17 is provided on the lower side of the conveyor belt 2 for supporting the installation of the electric cylinder 14 and the bracket 16. And to ensure the sliding stability of the n-shaped frame 13, a sliding frame 18 is also installed on the placing block 17. A limiting block 19 is provided on one side of the sliding frame 18. On the part of the n-shaped frame 13 located below the conveyor belt 2, a strip-shaped chute is arranged along its length direction on the side wall. The limiting block 19 is slidably arranged in the strip-shaped chute, so as to ensure the horizontal sliding stability when the two n-shaped frames 13 move closer to or away from each other under the action of the electric cylinder 14.

[0034] Such as Figures 6-7As shown in the figure, the guiding shaft includes a shaft body 20, a mounting block 21 and a telescopic block 22. Connecting shafts are rotatably installed at both ends of the shaft body 20. The mounting block 21 is installed on the connecting shaft on the lower side of the shaft body 20, and the telescopic block 22 is installed on the connecting shaft on the upper side of the shaft body 20. A cavity is provided inside the telescopic block 22, a spring 23 is arranged inside the cavity, a limiting plate 24 is arranged on the lower side of the spring 23, the connecting shaft on the upper side of the shaft body 20 slidably penetrates the bottom side wall of the cavity and is connected to the limiting plate 24. The limiting plate 24 is square and is slidably matched with the cavity. A plurality of insertion holes suitable for the insertion of the mounting block 21 and the telescopic block 22 are arranged on the inner top wall and the inner bottom wall of the placement groove. Through the action of the limiting plate 24, the spring 23 and the cavity, the telescopic block 22 can be pressed down, so as to facilitate the installation of the guiding shaft. During installation, first place the mounting block 21 in the insertion hole on the lower side, and then press down the telescopic block 22 and insert it into the insertion hole on the upper side, so as to realize the installation of the guiding shaft. In order to facilitate the disassembly of the guiding shaft, a push rod 25 is slidably arranged on the top of the positioning guiding plate 3 through a sliding hole. The outer diameter of the push rod 25 gradually increases from top to bottom to prevent the push rod 25 from separating from the sliding hole and being lost. The sliding hole communicates with the insertion hole. A handle 26 is arranged on the top of the push rod 25 to facilitate the operation of the push rod 25.

[0035] When the positioning mechanism of this vacuum packaging laminating machine is in use:

[0036] First, embed the first slide block 4 and the second slide block 6 into the T-shaped sliding grooves 10 on the side walls of the conveyor belt 2 respectively, slide along the T-shaped sliding grooves 10 to the preset installation positions, and then fix the first slide block 4 and the second slide block 6 on the side walls of the conveyor belt 2 by passing the locking screws 12 through the strip-shaped grooves 11. Screw the support shaft 5 into the threaded hole on the top of the first slide block 4, the mounting plate 7 is sleeved on the support shaft 5 through the shaft hole at the bottom, and then rotate the setscrew 9 to adjust the parallelism between the mounting plate 7 and the conveying direction of the conveyor belt 2 to ensure that the positioning guiding plate 3 is vertically installed;

[0037] Then, start the electric cylinder 14 to drive the lower n-shaped frame 13 to move horizontally. Through the engagement of the gear 15 with the teeth, drive the two groups of n-shaped frames 13 to move synchronously and in opposite directions. Observe the distance between the positioning guiding plates 3 and adjust it to the target value according to the width of the plate. At the same time, check the sliding state of the limiting block 19 in the strip-shaped sliding groove of the n-shaped frame 13 to ensure that the adjustment process is stable without jamming;

[0038] Secondly, press the telescopic block 22 to compress the spring 23 to move the limiting plate 24 downward, insert the mounting block 21 into the insertion hole at the bottom of the positioning guiding plate 3, release the telescopic block 22, and the spring 23 resets to push the limiting plate 24 to snap into the top insertion hole to complete the fixation of the shaft body 20. Repeat the operation to evenly install a plurality of guiding shafts in the placement grooves of the two side positioning guiding plates 3;

[0039] Then, use a spirit level to detect the parallelism between the positioning guide plate 3 and the conveyor belt 2, finely adjust the locking screws 12 of the first sliding seat 4 and the second sliding seat 6, and cooperate with the setscrew 9 to correct the angle of the mounting plate 7 until the guide plate is completely horizontal;

[0040] Finally, start the conveyor belt 2, place the test sheet at the input end, observe the centering effect of the sheet after being guided by the guide shaft. If there is any deviation, repeat the above steps to finely adjust the spacing. Continuously run for about 10 minutes, check the rotational flexibility of the guide shaft and the surface of the sheet for no scratches, and confirm the stability of the mechanism;

[0041] In addition, regularly clean the foreign matter on the surface of the guide shaft, apply lubricating grease to reduce wear. When disassembling the guide shaft, pull down the push rod 25 to the jack position, and press the telescopic block 22 to remove the shaft body 20. When not in use for a long time, loosen the locking screw 12 and move the first sliding seat 4 and the second sliding seat 6 to the protection position to avoid mechanical deformation.

[0042] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A positioning mechanism for a vacuum packaging laminating machine, arranged on a conveyor belt (2) at an input end of the vacuum laminating machine (1), characterized in that: include: Positioning guide plates (3) are symmetrically arranged on both sides of the input end of the conveyor belt (2); A mounting assembly with a leveling function, disposed between the positioning guide plate (3) and the conveyor belt (2), and used for mounting the positioning guide plate (3) at a use position; A guide shaft, wherein a placement groove is provided on one side opposite to the two positioning guide plates (3), and a plurality of rotatable guide shafts are installed in the placement groove; An adjustment component is arranged on the two positioning guide plates (3) and is used to adjust the distance between the two positioning guide plates (3).

2. The positioning mechanism of the vacuum packaging laminating machine according to claim 1, characterized in that: The installation assembly includes: A slide seat (4) slidably mounted on a side wall of the conveyor belt (2); A support shaft (5) threadedly mounted on the slide seat (4); Slide seat 2 (6) is arranged on both sides of the slide seat 1 (4) and is slidably mounted on the side wall of the conveyor belt (2); A mounting plate (7) plugged onto the support shaft (5); A positioning plate (8) longitudinally connected to the second slide seat (6); A top screw (9) is threadedly connected to two sides of the mounting plate (7).

3. The positioning mechanism of the vacuum packaging laminating machine according to claim 2, characterized in that: The adjustment component comprises: An n-shaped frame (13), one end of which is arranged to penetrate the mounting plate (7) and is vertically connected to the positioning guide plate (3); The n-shaped frame (13) and the mounting plate (7) are arranged vertically, and a sleeve for the n-shaped frame (13) to slide is arranged on the mounting plate (7); In addition, the other end of the n-shaped frame (13) is horizontally arranged below the conveyor belt (2); Furthermore, a gap is provided between the parts of the two n-shaped frames (13) located below the conveyor belt (2); The driving member is arranged between the two groups of n-shaped frames (13) and is used to drive the two groups of n-shaped frames (13) to move relative to each other.

4. The positioning mechanism of the vacuum packaging laminating machine according to claim 3, characterized in that: The driving member comprises: An electric cylinder (14) is arranged below the conveyor belt (2) and is arranged horizontally with the n-shaped frame (13); A gear (15) is arranged in the interval, and teeth for meshing with the gear (15) are arranged on a side of the n-shaped frame (13) close to the gear (15); a bracket (16), the gear (15) being rotatably disposed on the bracket (16); The output end of the electric cylinder (14) is connected to the end of the n-type frame (13) located at the lower side of the two n-type frames (13).

5. The positioning mechanism of the vacuum packaging laminating machine according to claim 2, characterized in that: The slide seat 1 (4) and the slide seat 2 (6) are both T-shaped structures, and a T-shaped slide groove matching the shape of the slide seat 1 (4) and the slide seat 2 (6) is provided on the side wall of the conveyor belt (2).

6. The positioning mechanism of the vacuum packaging laminating machine according to claim 5, characterized in that: It also includes a locking screw (12), threaded holes are provided on both sides of the slide seat 1 (4) and the slide seat 2 (6), strip grooves (11) are horizontally provided on both sides of the T-shaped slide groove, the strip grooves (11) are communicated with the T-shaped slide groove, and the locking screw (12) passes through the strip groove (11) and is screwed into the threaded hole.

7. The positioning mechanism of the vacuum packaging laminating machine according to claim 1, characterized in that: The guide shaft comprises: The shaft body (20) has connecting shafts rotatably mounted at both ends; A mounting block (21) mounted on a connecting shaft located at a lower side of the shaft body (20); The telescopic block (22) is mounted on the connecting shaft located on the upper side of the shaft body (20).

8. The positioning mechanism of the vacuum packaging laminating machine according to claim 7, characterized in that: A cavity is provided in the telescopic block (22), a spring (23) is provided in the cavity, a limit plate (24) is provided on the lower side of the spring (23), and a connecting shaft on the upper side of the shaft body (20) slides through the bottom side wall of the cavity and is connected to the limit plate (24).

9. The positioning mechanism of the vacuum packaging laminating machine according to claim 8, characterized in that: The limiting plate (24) is square in shape, and the limiting plate (24) is slidably matched with the cavity.

10. The positioning mechanism of the vacuum packaging laminating machine according to claim 7, characterized in that: The inner top wall and the inner bottom wall of the placement groove are provided with a plurality of insertion holes suitable for inserting the mounting block (21) and the telescopic block (22) respectively. A push rod (25) is slidably provided on the top of the positioning guide plate (3) through the sliding hole. The outer diameter of the push rod (25) gradually increases from top to bottom. The sliding hole is communicated with the insertion holes.

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