Automatic plate expanding device and heat shrink tube packaging system

Abstract

The utility model discloses an automatic plate expanding device and a heat shrink tube packaging system, the heat shrink tube packaging system comprises a bottom plate, two plate expanding baffles and a movable buffer assembly, the two plate expanding baffles are oppositely arranged on the bottom plate, a rotating space is formed between the two plate expanding baffles, at least one plate expanding baffle is a movable plate expanding baffle, and the movable buffer assembly is arranged between the two plate expanding baffles. The movable tray expanding baffle is arranged on the bottom plate in a sliding mode so that the width of the rotating space can be adjusted, and the movable buffering assembly is arranged on the bottom plate in a sliding mode through the adjusting assembly and corresponds to the side, away from the rotating space, of the movable tray expanding baffle. And friction between the heat shrink tube and the edge of the side plate in the tray loading and packaging process is effectively avoided, the phenomenon that the surface of the heat shrink tube is scratched is avoided, and better practicability and wider application range are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging structure design of heat shrink tubes, and further relates to an automatic disk expanding device and a heat shrink tube packaging system. Background Art

[0002] In the existing production process of heat shrink tubing products, expanded heat shrink tubing must go through the packaging process before it can be sold. During the packaging process, heat shrink tubing of different specifications will pass through the packaging machine and be packaged using round paper trays of different specifications. However, during the packaging process of flat tubes, the edges of the paper trays are relatively sharp, which will scratch both sides of the flat tubes, seriously affecting the quality of the final product.

[0003] In view of the above problems existing in the prior art, it is urgently necessary to design an automatic expanding device for multi-specification flat tube packaging to solve the above problems. Utility Model Content

[0004] In view of the above technical problems, the purpose of the present invention is to provide an automatic disk expanding device to solve the problems raised in the above background technology.

[0005] In order to achieve the above object, the utility model provides an automatic disk expansion device, comprising:

[0006] base plate;

[0007] Two expansion baffles, the two expansion baffles are arranged on the bottom plate relative to each other, and a rotation space is formed between the two expansion baffles, at least one of the expansion baffles is a movable expansion baffle, and the movable expansion baffle is slidably arranged on the bottom plate to make the width of the rotation space adjustable;

[0008] A movable buffer component is slidably arranged on the bottom plate through an adjusting component, and corresponds to a side of the movable expansion plate away from the rotation space.

[0009] By setting at least one expanding baffle to be slidable, on the one hand, during the flat tube packaging process, the expanding baffle can automatically separate the two sides of the paper tray to avoid scratches on both sides of the flat tube, thereby effectively improving the quality of the product; on the other hand, personnel can adjust the rotation space according to flat tubes of different specifications to meet the requirements of the flat tube packaging process, effectively improving the practicality and applicability of the device.

[0010] In some embodiments, the automatic disk expansion device provided by the present invention further includes:

[0011] a first guide rail, the first guide rail being arranged on the bottom plate, the first guide rail being slidably provided with a first slider, the first slider being connected to the movable disk expansion baffle;

[0012] The second guide rail is arranged on the bottom plate and is parallel to the first guide rail. The second guide rail is slidably provided with a second slider, and the second slider is connected to the buffer assembly.

[0013] By providing a first guide rail and a second guide rail, and the first guide rail and the second guide rail are parallel, the movable expansion baffle and the buffer assembly can slide along a straight line, thereby improving the reliability and practicality of the device.

[0014] In some embodiments, the movable buffer assembly includes a first buffer baffle and a first oil pressure buffer, the first buffer baffle is arranged on the first slider, and corresponds to the side of the movable expansion disk baffle away from the first buffer baffle and the first oil pressure buffer of the rotation space, and the first oil pressure buffer is arranged on the second slider, and corresponds to the side of the first buffer baffle away from the movable expansion disk baffle.

[0015] By setting the first buffer baffle and the first hydraulic buffer, the movable expansion disk baffle can be limited by controlling the position of the first hydraulic buffer, thereby achieving the effect that the width of the rotation space can be fixed, and also effectively reducing the vibration and noise generated during operation.

[0016] In some embodiments, the adjustment assembly includes a screw rod, which is suspended on the base plate through a support frame and parallel to the second guide rail. A third slider is spirally sleeved on the screw rod, and the third slider is connected to the second slider so that the second slider can be moved along the length direction of the screw rod by rotating the screw rod.

[0017] By setting up a mechanism that can drive the first hydraulic buffer on the second slider to slide along the second guide rail by rotating the screw rod, the distance between the two expansion baffles can be precisely controlled, effectively improving the matching degree between the rotating space and the rotating groove on the paper tray.

[0018] In some embodiments, the automatic disk expansion device provided by the present invention further includes:

[0019] A first driving device is connected to the first buffer baffle, so that the movable expansion baffle can slide along the first guide rail under the drive of the first driving device.

[0020] In some embodiments, the other disk-expanding baffle is a limiting disk-expanding baffle, and the limiting disk-expanding baffle is slidably disposed on the first guide rail via a fourth sliding block.

[0021] In some embodiments, the automatic disk expansion device provided by the present invention further includes:

[0022] A fixed buffer assembly includes a second buffer baffle and a second oil pressure buffer. The second buffer baffle is arranged on the fourth slider and corresponds to the side of the limiting expansion baffle away from the rotation space. The second oil pressure buffer is fixed on the bottom plate and corresponds to the side of the second buffer baffle away from the limiting expansion baffle.

[0023] In some embodiments, the automatic disk expansion device provided by the present invention further includes:

[0024] A second driving device is connected to the second buffer baffle, so that the limiting expansion baffle can slide along the first guide rail under the drive of the second driving device.

[0025] In some embodiments, the expansion baffle includes two abutment plates, the two abutment plates are vertically connected, and a wrapping side is formed at an angle where the two abutment plates are connected, and the two wrapping sides are arranged opposite to each other.

[0026] By setting two abutment plates to be vertically connected to form a wrapping side, the effect of the expansion baffle on shielding the sharp edges of the paper tray side panels can be effectively improved, thereby providing strong protection for the flat tube.

[0027] According to another aspect of the present invention, the present invention further provides a heat shrink tube packaging system, comprising:

[0028] A frame, a paper tray and an automatic tray expanding device as described in any of the above embodiments, wherein the paper tray and the automatic tray expanding device are both arranged on the frame, and the tray expanding baffle is arranged corresponding to the paper tray.

[0029] Compared with the prior art, the automatic disk expansion device provided by the present invention has the following beneficial effects:

[0030] 1. The automatic tray expansion device provided by the utility model is provided with at least one slidable tray expansion baffle. On the one hand, during the flat tube packaging process, the tray expansion baffle can automatically separate the two sides of the paper tray to prevent the flat tube from being scratched, thereby effectively improving the quality of the product. On the other hand, personnel can adjust the rotation space according to the different specifications of flat tubes to meet the requirements of the flat tube packaging process, effectively improving the practicality and applicability of the device.

[0031] 2. The automatic disk expansion device provided by the present invention converts rotational motion into linear motion by setting a screw rod, thereby effectively improving the accuracy of the distance that the first hydraulic buffer slides along the second guide rail, and effectively improving the matching degree between the rotating space and the rotating groove on the paper disk. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The preferred embodiments will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0033] Figure 1 This is a front structural diagram of the automatic disk expanding device according to a preferred embodiment of the present utility model;

[0034] Figure 2 This is a schematic elevational structural diagram of a movable buffer assembly and an adjusting assembly according to a preferred embodiment of the present utility model;

[0035] Figure 3 It is a schematic elevational structural diagram of a heat shrink tube packaging system according to a preferred embodiment of the present invention.

[0036] Description of Figure Numbers:

[0037] Base plate 10, movable disk expansion baffle 21, limiting disk expansion baffle 22, abutment plate 23, first guide rail 30, second guide rail 40, movable buffer assembly 50, first buffer baffle 51, first oil pressure buffer 52, second slider 53, adjustment assembly 60, screw rod 61, third slider 62, support frame 63, handle 64, second drive device 70, fixed buffer assembly 80, first drive device 90, paper tray 100, automatic disk expansion device 110, frame 120. DETAILED DESCRIPTION

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without inventive work.

[0039] To simplify the drawings, only the parts relevant to the utility model are schematically shown in each figure; they do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically depicted or labeled. In this document, "one" not only means "only one" but also "more than one."

[0040] It should be further understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0041] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0042] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0043] In one embodiment, the reference Figures 1 to 3 The utility model provides an automatic disk expanding device 110, including a base plate 10, two disk expanding baffles and a movable buffer assembly 50, wherein the two disk expanding baffles are relatively arranged on the base plate 10, and a rotation space is formed between the two disk expanding baffles, at least one disk expanding baffle is a movable disk expanding baffle 21, and the movable disk expanding baffle 21 is slidably arranged on the base plate 10 so that the width of the rotation space can be adjusted. The movable buffer assembly 50 is slidably arranged on the base plate 10 through the adjustment assembly 60, and the corresponding movable disk expanding baffle 21 corresponds to the side away from the rotation space.

[0044] Specifically, the automatic tray expanding device 110 is generally used in the flat tube packaging process of heat shrink tubes. The bottom plate 10 is used to support and fix the parts of the automatic tray expanding device 110, so that the automatic tray expanding device 110 can be detachably fixed to the frame 120 of the packaging machine through the bottom plate 10. The bottom plate 10 can be a rectangular plate. The tray expanding baffle is used to block the sharp edges on the paper tray 100 to prevent the sharp edges on the paper tray 100 from contacting the flat tube and scratching the surface of the flat tube. Usually, the side plates on both sides of the paper tray 100 are perpendicular to the plane of the machine base, and a rotating groove for placing the flat tube is formed between the two side plates. Therefore, the tray expanding baffle is arranged perpendicular to the bottom plate 10, and the tray expanding baffle can be an arc-shaped object that matches the edge of the wire drum to better wrap the edge of the wire drum. A rotating space for the flat tube to rotate is formed between the two tray expanding baffles. In addition, at least one of the tray expanding baffles is a movable tray expanding baffle 21. So that the gap between the two expansion baffles can be adjusted, that is, the width of the rotation space can be adjusted, so that the staff can expand the rotation space to different widths according to different specifications of paper trays 100, thereby ensuring that the automatic expansion device 110 can adapt to more specifications of paper trays 100, effectively improving the practicality and applicability of the automatic expansion device 110, and further providing a movable buffer assembly 50 for limiting the movable expansion baffle 21, so that the staff can control the position of the movable expansion baffle 21 by adjusting the position of the movable buffer assembly 50, thereby achieving the ability to fix the width of the rotation space, and by providing an adjustment assembly 60, the movement of the movable buffer assembly 50 can be controlled more finely and accurately, thereby effectively improving the adaptation of the rotation space to the rotation groove on the paper tray 100, and providing a guarantee for the cooperation between the automatic expansion device 110 and the paper tray 100.

[0045] In one embodiment, the reference Figure 1 and Figure 2 On the basis of the above embodiments, the automatic disk expansion device 110 provided by the present invention also includes a first guide rail 30 and a second guide rail 40. The first guide rail 30 is arranged on the base plate 10. The first guide rail 30 is slidably provided with a first slider, and the first slider is connected to the movable disk expansion baffle 21. The second guide rail 40 is arranged on the base plate 10 and is parallel to the first guide rail 30. The second guide rail 40 is slidably provided with a second slider 53, and the second slider 53 is connected to the buffer assembly.

[0046] Specifically, the first guide rail 30 is arranged on the base plate 10, and the first guide rail 30 extends along the long side direction of the base plate 10, and the movable expansion baffle 21 is arranged on the first slider, and the first slider matches the cross-sectional shape of the first guide rail 30 so that the two can fit closely and move smoothly, thereby realizing that the movable expansion baffle 21 can slide along the first guide rail 30. Similarly, the second guide rail 40 is arranged on the side of the base plate 10 corresponding to the first guide rail 30 and is parallel to the first rail. A second slider 53 adapted to the second guide rail 40 is slidingly provided on the second guide rail 40, so that the buffer component on the second slider 53 can slide along the second guide rail 40, and then can correspondingly resist the movable expansion baffle 21 to play a limiting role.

[0047] It should be pointed out that the number of second guide rails 40 can be two, and the two second guide rails 40 are arranged in parallel on the side of the base plate 10 opposite to the first guide rail 30, wherein the second guide rail 40 closer to the edge of the base plate 10 is arranged below the adjustment component 60. By setting two second guide rails 40, the stability and reliability of the sliding of the buffer component driven by the adjustment component 60 are effectively improved.

[0048] In one embodiment, the reference Figure 1 and Figure 2 On the basis of the above embodiment, the movable buffer assembly 50 includes a first buffer baffle 51 and a first oil pressure buffer 52. The first buffer baffle 51 is arranged on the first slider and corresponds to the side of the movable expansion baffle 21 away from the rotation space. The first oil pressure buffer 52 is arranged on the second slider 53 and corresponds to the side of the first buffer baffle 51 away from the movable expansion baffle 21.

[0049] Specifically, the first buffer baffle 51 is arranged perpendicular to the plane of the base plate 10 and is arranged on the side of the expansion baffle away from the rotation space. The first oil hydraulic buffer 52 includes a hydraulic cylinder, a piston and a throttling device. The buffer rod is arranged at the output end of the hydraulic cylinder and is connected to one end of the piston through a reset spring. The other end of the piston is connected to the buffer rod. The end of the buffer rod is cylindrical. The specific working principle is that when the impact force of the expansion baffle acts on the buffer rod, the piston moves forward inside the cylinder body of the hydraulic cylinder, squeezing the hydraulic oil in the hydraulic cylinder. The hydraulic oil flows through the throttling device on the hydraulic cylinder to generate resistance, thereby absorbing impact energy. As the piston moves, the pressure of the hydraulic oil gradually increases until it reaches a balance with the impact force of the expansion baffle; when the impact force disappears, the reset spring pushes the piston back to the initial position, and at the same time, the hydraulic oil flows back to its original position through the throttling device in the hydraulic cylinder. During this process, the pressure of the hydraulic oil in the hydraulic cylinder gradually decreases until it returns to its initial state. By setting the first hydraulic buffer 52 to absorb the impact force generated by the mobile expansion baffle 21 during operation, vibration and noise are effectively reduced, thereby effectively protecting the equipment and extending the service life of the device.

[0050] In one embodiment, the reference Figure 1 and Figure 2 On the basis of the above embodiment, the adjustment component 60 includes a screw rod 61, which is suspended on the bottom plate through a support frame 63 and is parallel to the second guide rail 40. A third slider 62 is spirally sleeved on the screw rod, and the third slider 62 is connected to the second slider 53 so that the second slider 53 can be driven to move along the length direction of the screw rod by rotating the screw rod.

[0051] Specifically, a first thread is formed on the screw, a sliding hole is formed on the third slider 62, and a second thread that matches the first thread is formed inside the sliding hole. A handle 64 is provided on one side of the screw. When a worker turns the handle 64, the screw rotates, thereby driving the third slider 62 to move along the axis of the screw. The direction and speed of movement of the third slider 62 can also be precisely controlled by controlling the rotation direction and speed of the screw. The third slider 62 and the second slider 53 are correspondingly connected so that the first oil pressure buffer 52 on the second slider 53 can be driven to slide along the second guide rail 40 by rotating the screw, thereby achieving precise control of the distance between the two expansion baffles, effectively improving the matching between the rotation space and the rotation groove on the paper tray 100.

[0052] In one embodiment, the reference Figure 1 and Figure 2 On the basis of the above embodiments, the automatic disk expanding device 110 provided by the present invention further includes a first driving device 90, which is connected to the first buffer baffle 51 so that the movable disk expanding baffle 21 can slide along the first guide rail 30 under the drive of the first driving device 90.

[0053] Specifically, the first drive device 90 is a cylinder drive device, which is arranged on the base plate 10, and the output end of the cylinder drive device is correspondingly arranged on the side of the movable expansion baffle 21 close to the rotation space. When the output end of the cylinder drive device extends outward, the movable expansion baffle 21 moves in a direction away from the other expansion baffle to expand the width of the rotation space. When the output end of the cylinder drive device contracts back, the movable expansion baffle 21 moves in a direction close to the other expansion baffle to narrow the width of the rotation space.

[0054] In one embodiment, the reference Figure 1 and Figure 2 The other expansion baffle is a limiting expansion baffle 22 , and the limiting expansion baffle 22 is slidably disposed on the first guide rail 30 through a fourth slider.

[0055] Specifically, the expansion baffle 22 is limited to be slidably set on the first guide rail 30, so that the position of the rotation space between the two expansion baffles can be adjusted according to actual needs, and the width of the rotation space can also be more flexibly controlled, further effectively improving the practicality of the entire device.

[0056] In one embodiment, the reference Figure 1 and Figure 2 On the basis of the above embodiments, the automatic disk expansion device 110 provided by the present invention further includes a fixed buffer assembly 80, which includes a second buffer baffle and a second oil pressure buffer. The second buffer baffle is arranged on the fourth slider and corresponds to the side of the disk expansion baffle 22 corresponding to the side away from the rotation space. The second oil pressure buffer is fixedly arranged on the bottom plate 10 and corresponds to the side of the second buffer baffle away from the disk expansion baffle 22.

[0057] Specifically, the structure of the second buffer baffle is the same as that of the first buffer baffle 51. The second buffer baffle is vertically arranged on the fourth slider. The composition of the second oil pressure buffer is the same as that of the first oil pressure buffer 52. The difference is that the second oil pressure buffer is fixedly arranged on the base plate 10 and is correspondingly arranged on the side of the second buffer baffle away from the limiting expansion baffle 22. By setting the second oil pressure buffer to absorb the impact force generated by the limiting expansion baffle 22 during operation, the vibration and noise during the operation of the device are further reduced, thereby achieving the effect of further protecting the equipment and extending the service life of the device.

[0058] In one embodiment, the reference Figure 1 and Figure 2 On the basis of the above embodiments, the automatic disk expansion device 110 provided by the present invention also includes a second drive device 70, which is connected to the second buffer baffle so that the disk expansion baffle 22 can slide along the first guide rail 30 under the drive of the second drive device 70.

[0059] Specifically, the second drive device 70 is also a cylinder drive device like the first drive device 90. By setting the second drive device 70, the expansion baffle 22 can slide along the first guide rail 30 under the driving action of the second drive device 70, thereby reducing the workload of the staff and effectively improving the mechanization level of the device. In addition, the second drive device 70 and the first drive device 90 can be controlled by the same solenoid valve to effectively reduce the workload of employees during operation and effectively improve the convenience of device operation.

[0060] In one embodiment, the reference Figure 2The expansion baffle includes two abutment plates 23, the two abutment plates 23 are vertically connected, and the angle where the two abutment plates 23 are connected forms a wrapping side, and the two wrapping sides are arranged opposite to each other.

[0061] Specifically, the two abutment plates 23 are both arc-shaped and adapted to the edges of the side panels on the paper tray 100. The two abutment plates 23 are vertically connected to each other, and the side corresponding to the small angle is the wrapping side. During actual operation, the edges of the side panels on the paper tray 100 are located on the wrapping side to effectively block the edges of the side panels, thereby achieving the purpose of protecting the flat tubes on the paper tray 100.

[0062] The working process of the automatic tray expanding device 110 provided in the present application is as follows: during the flat tube packaging process, the staff must first obtain the height of the paper tray 100 of different specifications according to the flat tubes of different specifications; then adjust the adjustment component 60, that is, rotate the hand wheel to drive the first hydraulic buffer 52 to move along the second guide rail 40; after the first hydraulic buffer 52 is adjusted to a suitable position, the staff places the paper tray 100 on the packaging machine, wherein the round hole of the paper tray 100 passes through the fixed end of the frame 120 of the packaging machine, and at the same time, the expanding edges of the two tray expanding baffles are moved correspondingly. Move to the rotation groove between the side plates on both sides of the paper tray 100; turn the control knob on the packaging machine to move the clamping cylinder on the frame 120 of the packaging machine to clamp the paper tray 100, and at the same time, the first drive device 90 and the second drive device 70 on the expanding device 110 start to work, thereby driving the mobile expanding baffle 21 and the limiting expanding baffle 22 to move along the first guide rail 30 until the first buffer baffle 51 and the second buffer baffle correspond to the first oil pressure buffer 52 and the second oil pressure buffer respectively. At this time, the paper tray 100 has been successfully expanded, and then the packaging operation is carried out.

[0063] Reference Manual Figure 1 and Figure 3 The present invention further provides a heat shrink tube packaging system, including a frame 120, a paper tray 100 and an automatic tray expanding device 110 as in any of the above embodiments, the paper tray 100 and the automatic tray expanding device 110 are both arranged on the frame 120, and the tray expanding baffle is arranged corresponding to the paper tray 100.

[0064] Specifically, the heat shrink tube packaging system using the automatic tray expanding device 110 in any of the above embodiments effectively avoids the friction between the heat shrink tube and the side panel edge during the tray packaging process by setting an anti-scratch tray expanding baffle on the side panel edge of the paper tray 100, thereby avoiding scratches on the surface of the heat shrink tube, and also has better practicality and a wider range of applications.

[0065] It should be noted that the above embodiments can be freely combined as needed. The above are only preferred embodiments of the present invention. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principles of the present invention, and such improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An automatic disk expansion device, characterized in that: include: base plate; Two expansion baffles, the two expansion baffles are arranged on the bottom plate relative to each other, and a rotation space is formed between the two expansion baffles, at least one of the expansion baffles is a movable expansion baffle, and the movable expansion baffle is slidably arranged on the bottom plate to make the width of the rotation space adjustable; A movable buffer component is slidably arranged on the bottom plate through an adjusting component, and corresponds to a side of the movable expansion plate away from the rotation space.

2. The automatic disk expansion device according to claim 1, characterized in that: Also includes: a first guide rail, the first guide rail being arranged on the bottom plate, the first guide rail being slidably provided with a first slider, the first slider being connected to the movable disk expansion baffle; The second guide rail is arranged on the bottom plate and is parallel to the first guide rail. The second guide rail is slidably provided with a second slider, and the second slider is connected to the buffer assembly.

3. The automatic disk expansion device according to claim 2, characterized in that: The movable buffer assembly includes a first buffer baffle and a first oil pressure buffer. The first buffer baffle is arranged on the first slider and corresponds to the side of the movable expansion disk baffle away from the rotation space. The first oil pressure buffer is arranged on the second slider and corresponds to the side of the first buffer baffle away from the movable expansion disk baffle.

4. The automatic disk expansion device according to claim 3, characterized in that: The adjustment assembly includes a screw rod, which is suspended on the base plate through a support frame and is parallel to the second guide rail. A third slider is spirally sleeved on the screw rod, and the third slider is connected to the second slider so that the second slider can be driven to move along the length direction of the screw rod by rotating the screw rod.

5. The automatic disk expansion device according to claim 4, characterized in that: Also includes: A first driving device is connected to the first buffer baffle, so that the movable expansion baffle can slide along the first guide rail under the drive of the first driving device.

6. The automatic disk expanding device according to any one of claims 2 to 5, characterized in that: The other disk-expanding baffle is a limited disk-expanding baffle, and the limited disk-expanding baffle is slidably arranged on the first guide rail through a fourth sliding block.

7. The automatic disk expansion device according to claim 6, characterized in that: Also includes: A fixed buffer assembly includes a second buffer baffle and a second oil pressure buffer. The second buffer baffle is arranged on the fourth slider and corresponds to the side of the limiting expansion baffle away from the rotation space. The second oil pressure buffer is fixed on the bottom plate and corresponds to the side of the second buffer baffle away from the limiting expansion baffle.

8. The automatic disk expansion device according to claim 7, characterized in that: Also includes: A second driving device is connected to the second buffer baffle, so that the limiting expansion baffle can slide along the first guide rail under the drive of the second driving device.

9. The automatic disk expanding device according to claim 7 or 8, characterized in that: The expansion baffle includes two abutment plates, the two abutment plates are vertically connected, and a wrapping side is formed at an angle where the two abutment plates are connected, and the two wrapping sides are arranged opposite to each other.

10. A heat shrink tube packaging system, characterized in that: include: A frame, a paper tray and an automatic tray expanding device as described in any one of claims 1 to 9, wherein the paper tray and the automatic tray expanding device are both arranged on the frame, and the tray expanding baffle is arranged corresponding to the paper tray.

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