An extension machine

By designing an expansion machine and utilizing the cooperation of a fixed support platform and a movable support platform, the expansion and tensioning of the adhesive film can be achieved, solving the problem of difficulty in removing small glass pieces caused by the loosening of the adhesive film and improving operational safety.

CN224377922UActive Publication Date: 2026-06-19SUZHOU DESENKO ELECTRONIC TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SUZHOU DESENKO ELECTRONIC TECH CO LTD
Filing Date
2025-06-26
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

In existing technologies, the adhesive membrane becomes loose after stretching, which increases the difficulty of removing small glass pieces and poses a high risk of operation.

Method used

An expansion machine was designed, including a fixed support platform and a movable support platform. Through a pressing mechanism and a rotating pushing mechanism, and by utilizing the cooperation of a first ring and a second ring, the expansion and tensioning of the viscous film is achieved, ensuring that the viscous film maintains tension after expansion and reducing relaxation.

Benefits of technology

It effectively reduces the difficulty of removing small glass pieces, improves operational safety, and ensures that the adhesive film remains taut after expansion, making it easier for tools to remove the glass pieces.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224377922U_ABST
    Figure CN224377922U_ABST
Patent Text Reader

Abstract

This utility model relates to an expansion machine, comprising a fixed support platform on which a first ring is placed; a movable support platform on which a second ring is placed, the second ring being coaxially arranged with the first ring, the movable support platform being configured to pass through the first ring; and a pressing mechanism comprising multiple pressing members and a pressing cylinder for driving the multiple pressing members to move, the multiple pressing members respectively pressing the first ring onto the fixed support platform and pressing the second ring onto the movable support platform. This utility model can both expand viscous films and maintain the tension of the viscous film, reducing the phenomenon of relaxation after expansion and reducing the difficulty of removing small glass pieces.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of glass cutting technology, and in particular to an expansion machine. Background Technology

[0002] In modern glass processing, efficiently and safely cutting large glass panes into multiple smaller glass pieces is a common requirement. Current processes involve attaching an adhesive film to a ring before cutting, then attaching the large glass piece to the inner surface of the film. The ring maintains the tension of the adhesive film, allowing for more precise cutting of the large glass pane. After cutting, the adhesive film adheres to and connects all the smaller glass pieces, preventing them from falling off. Although the smaller glass pieces separate along the cutting line, they are usually still tightly adhered together without noticeable gaps. It is difficult and dangerous to directly remove these small glass pieces by hand or with tools; sharp edges and tiny fragments can easily cut the operator's hands.

[0003] The current method involves stretching an adhesive membrane to move the small glass pieces attached to it, creating a clear gap between them. Operators can then use tools such as suction cups to separate and pick up the small glass pieces. However, the adhesive membrane becomes loose after being stretched, posing a new challenge for removing the small glass pieces. Summary of the Invention

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the problem in the prior art that after stretching the adhesive film with small glass pieces adsorbed on it, the adhesive film becomes loose, which increases the difficulty of removing the small glass pieces. In this way, an expansion machine is provided that can not only expand the adhesive film, but also maintain the tension of the adhesive film, reduce the phenomenon of loosening after the adhesive film is expanded, and reduce the difficulty of removing the small glass pieces.

[0005] To solve the above-mentioned technical problems, this utility model provides an expansion machine, including,

[0006] A fixed support platform on which the first circular ring is placed;

[0007] A movable support platform is provided on which a second ring is placed. The second ring is coaxially arranged with the first ring, and the movable support platform is configured to pass through the first ring.

[0008] A clamping mechanism includes multiple clamping elements and a clamping cylinder for driving the multiple clamping elements to move. The multiple clamping elements respectively clamp a first ring on the fixed support platform and a second ring on the movable support platform.

[0009] In one embodiment of the present invention, a cutting blade and a driving cylinder are further included, wherein the driving cylinder drives the cutting blade to pass through the gap between the second ring and the first ring.

[0010] In one embodiment of the present invention, a rotary pushing mechanism is further included. The rotary pushing mechanism includes a pushing component and a rotating component. The pushing component pushes the rotating component, the movable support platform and the cutting blade in a vertical direction. The rotating component drives the cutting blade to rotate around the outer edge of the second ring.

[0011] In one embodiment of the present invention, a heating plate is further provided on the movable support platform, and the second ring is horizontally provided on the heating plate.

[0012] In one embodiment of this utility model, the fixed support platform is provided with a central hole, the movable support platform is smaller than the central hole, and the movable support platform is arranged directly opposite the central hole in the vertical direction.

[0013] In one embodiment of this utility model, the surface of the fixed support platform is provided with an adhesive material or a friction-enhancing structure.

[0014] In one embodiment of this utility model, the fixed support platform is provided with an annular groove, the annular groove is concentrically arranged with the central hole, and the friction-enhancing structure is provided as an annular rib, the annular rib is accommodated in the annular groove and protrudes from the surface of the fixed support platform.

[0015] In one embodiment of the present invention, the plurality of clamping components include a third ring, the clamping cylinder drives the third ring to descend, the third ring is disposed above the first ring, and the third ring is coaxial with the first ring and directly opposite it.

[0016] In one embodiment of the present invention, the plurality of pressing components further include a pressing circular plate located above the heating plate, the pressing cylinder drives the pressing circular plate to descend, the pressing circular plate is coaxially arranged with the third ring, and the pressing circular plate is smaller than the inner ring of the third ring.

[0017] In one embodiment of the present invention, the pressing mechanism further includes a plurality of pressure plates connected to the third ring, and the plurality of pressure plates are evenly distributed along the circumference of the third ring, and the plurality of pressing cylinders respectively drive the plurality of pressure plates to descend.

[0018] In one embodiment of this utility model, a machine base is further included. The machine base has a fixed connecting plate and a sliding connecting plate inside. The fixed connecting plate is connected to the machine base through a connecting column. The sliding connecting plate is slidably connected to the connecting column in a vertical direction. A pushing component is disposed on the fixed connecting plate and pushes up the sliding connecting plate. A rotating component is disposed on the sliding connecting plate.

[0019] In one embodiment of this utility model, the rotating assembly includes a rotary motor, a synchronous belt, and a synchronous pulley. The output end of the rotary motor is driven by the synchronous pulley through the synchronous belt, and the movable support platform is connected to the synchronous pulley.

[0020] In one embodiment of the present invention, the machine base is provided with a mounting plate to support a plurality of guide columns of the mounting plate, the guide columns are movably fitted with bushings, and the machine base is provided with a mounting plate.

[0021] In one embodiment of this utility model, the synchronous pulley is coaxially connected to a turntable, the cutting blade is slidably connected to the turntable in a vertical direction, and the cutting blade is connected to the turntable through a return spring. The cutting blade passes through the gap between the first ring and the second ring in a vertical direction. The driving cylinder is connected to the sliding connecting plate, and the output end of the driving cylinder is connected to a locking block. The side of the locking block is provided with a recess, and the bottom end of the cutting blade is provided with a locking member. The locking member is configured to be able to rotate into the recess of the locking block and be hooked by the locking block.

[0022] In one embodiment of this utility model, the fixed support platform is provided with a plurality of positioning pins, and the plurality of positioning pins abut against the periphery of the first ring in a horizontal direction.

[0023] In one embodiment of this utility model, the third ring is provided with a plurality of clearance holes, which are arranged vertically opposite to the positioning pin.

[0024] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial effects:

[0025] The expanding machine of this utility model utilizes a first ring to adhere to the edge of an adhesive film with glass sheets adsorbed on it. After the first ring is pressed tightly, a movable support platform pushes the middle of the adhesive film to expand it. As the adhesive film expands, a clear gap is formed between adjacent glass sheets, making it easy to remove the glass sheets with tools. After the adhesive film is expanded, the bottom of a second ring adheres to it, ensuring that a new tension area is formed in the middle of the adhesive film, preventing the adhesive film from becoming loose after its edges are cut and its middle part expands. A pressing mechanism is used to press the adhesive film and the first ring tightly, preventing the edge of the adhesive film from detaching from the first ring and moving with the second ring during expansion, which would result in incomplete expansion of the adhesive film. A pressing member is used to press the second ring onto the expanded adhesive film, ensuring that the adhesive film and the second ring are fully bonded. Attached Figure Description

[0026] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0027] Figure 1 This is a schematic diagram of the expansion machine in a preferred embodiment of the present invention;

[0028] Figure 2 for Figure 1 The diagram shows the structure of the expander without the machine base, cover, and grating.

[0029] Figure 3 for Figure 1 The cross-sectional view of the expansion machine shown is a structural schematic diagram;

[0030] Figure 4 for Figure 3 An enlarged view of point A shown;

[0031] Figure 5 for Figure 1 The exploded view of the expansion machine shown is a structural schematic diagram.

[0032] Figure 6 for Figure 2 The diagram shows the structure of the fixed support platform.

[0033] Figure 7 for Figure 2 The diagram shows the structure of the third ring.

[0034] Explanation of reference numerals in the accompanying drawings: 1. Fixed support platform; 11. Annular groove; 12. Locating pin; 13. Friction-enhancing structure; 14. Center hole; 2. First ring; 3. Movable support platform; 4. Second ring; 5. Clamping mechanism; 51. Mounting plate; 52a. First clamping cylinder; 52b. Second clamping cylinder; 52c. Third clamping cylinder; 52d. Fourth clamping cylinder; 53. Bushing; 54. Guide rod; 55a. First pressure plate; 55b. Second pressure plate; 55c. Third pressure plate; 56. 561. Third ring; 57. Clearance hole; 58. Pressing plate; 6. Guide post; 6. Drive cylinder; 61. Output end of drive cylinder; 62. Cutting blade; 63. Snap-fit ​​component; 64. Snap-fit ​​block; 7. Rotary jacking mechanism; 71. Jacking assembly; 72. Sliding connecting plate; 73. Rotary motor; 74. Synchronous belt; 75. Connecting rod; 76. Synchronous pulley; 77. Fixed connecting plate; 78. Turntable; 8. Machine base; 81. Cover; 82. Operating port; 83. Grating; 9. Heating plate. Detailed Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0036] Reference Figure 2 , Figure 4As shown, in one embodiment of this utility model, an expansion machine is disclosed, comprising,

[0037] A fixed support platform 1 is provided, on which a first circular ring 2 is placed;

[0038] The movable support platform 3 has a second ring 4 placed on it. The second ring 4 is coaxially arranged with the first ring 2. The movable support platform 3 is configured to pass through the first ring 2.

[0039] The clamping mechanism 5 includes a plurality of clamping elements and a clamping cylinder for driving the plurality of clamping elements to move. The plurality of clamping elements respectively clamp the first ring 2 onto the fixed support platform 1 and the second ring 4 onto the movable support platform 3.

[0040] In this embodiment, the expansion machine has a first ring 2 and a second ring 4, both of which are annular sheet structures. Before expanding the adhesive film, a lamination process is used to simultaneously attach the adhesive film to the first ring 2 and the large glass sheet. The first ring 2 and the large glass sheet are located on the same side of the adhesive film, with the large glass sheet located inside the first ring 2. After lamination, the first ring 2 is transferred to a cutting device to cut the large glass sheet. Then, the first ring 2 is transferred to the fixed support platform 1 of the expansion machine for adhesive film expansion. Specifically... The first ring 2 is inverted on the fixed support platform 1, so that the adhesive film is located between the fixed support platform 1 and the first ring 2, and the small glass piece is located on the upper surface of the adhesive film. Then, the first ring 2 is pressed tightly using the clamping device. The movable support platform 3 is used to lift and pass through the first ring 2 to open the middle of the adhesive film, thereby expanding the adhesive film. Then, the second ring 4 is placed on the movable support platform 3 so that its bottom adheres to the adhesive film. After removing the excess material of the adhesive film, the adhesive film on the second ring 4 is always in an open state, reducing the phenomenon of the adhesive film loosening.

[0041] Reference Figure 3 and Figure 4 As shown, in one embodiment of this utility model, a cutting blade 62 and a driving cylinder 6 are also included. When the movable support platform 3 expands the adhesive film, the adhesive film located around the movable support platform 3 is excess waste material. The driving cylinder 6 is used to drive the cutting blade 62 to pass through the gap between the movable support platform 3 and the first ring 2 to puncture the waste material. Finally, the cutting blade 62 rotates around the outer edge of the movable support platform 3 to remove the waste material.

[0042] Reference Figure 3 and Figure 5As shown, in one embodiment of this utility model, a rotary pushing mechanism 7 is further included. The rotary pushing mechanism 7 includes a pushing component 71 and a rotating component. The pushing component 71 is used to push the rotating component, the movable support platform 3, and the cutting blade 62 in a vertical direction, so that the movable support platform 3 can pass through the first ring 2 to open the adhesive film. The rotating component is used to drive the cutting blade 62 to rotate 360° around the outer edge of the movable support platform 3 to realize the automatic removal of adhesive film waste. The pushing component 71 is preferably a cylinder.

[0043] Reference Figure 4 As shown, in one embodiment of this utility model, a heating plate 9 is further provided on the movable support platform 3. The heating plate 9 is used to stretch the adhesive film. The heating plate 9 is provided with a heating element that can generate heat. The heat from the heating plate 9 is transferred to the adhesive film of the first ring 2, making the adhesive film easier to stretch. After the heating plate 9 rises to a predetermined height, the second ring 4 is horizontally placed on the heating plate 9, so that the bottom of the second ring 4 sticks to the adhesive film and keeps the adhesive film in a taut state.

[0044] Reference Figure 6 As shown, in one embodiment of the present invention, the fixed support platform 1 is provided with a central hole 14, the movable support platform 3 is smaller than the central hole 14, and the movable support platform 3 is arranged directly opposite the central hole 14 in the vertical direction. Therefore, the movable support platform 3 can pass through the central hole 14 and descend completely below the fixed support platform 1, so that the first ring 2 can be placed flat on the fixed support platform 1.

[0045] Reference Figure 4 As shown, in one embodiment of this utility model, the surface of the fixed support platform 1 is provided with a friction-enhancing structure 13. The adhesive film is pressed between the first ring 2 and the surface of the fixed support platform 1. Since the surface of the fixed support platform 1 is relatively smooth, there is a risk that the adhesive film will be pushed open when it expands. Therefore, the rough friction-enhancing structure 13 can increase the friction on the adhesive film after contacting it, reducing the risk that the adhesive film will be pushed open when it expands. In other embodiments, the surface of the fixed support platform 1 can also be provided with an adhesive material. The adhesive material is used to stick the adhesive film to the surface of the fixed support platform 1, increasing the friction on the adhesive film.

[0046] Reference Figure 6 As shown, in one embodiment of this utility model, the fixed support platform 1 is provided with an annular groove 11, the annular groove 11 is concentrically arranged with the central hole 14, and the friction-enhancing structure 13 is provided as an annular rib, the annular rib is accommodated in the annular groove 11 and protrudes or is flush with the surface of the fixed support platform 1. The annular rib uniformly increases the friction around the adhesive film and avoids uneven local force. The friction-enhancing structure 13 is preferably an annular rubber line.

[0047] Reference Figure 2 and Figure 7 As shown, in one embodiment of this utility model, the plurality of pressing components include a third ring 56. The pressing cylinder is used to drive the third ring 56 to descend. The third ring 56 is disposed above the first ring 2. The third ring 56 is used to press the first ring 2 onto the fixed support platform 1. When the heating plate 9 expands the adhesive film, it can prevent the first ring 2 from being lifted up together. The third ring 56 is coaxial with the first ring 2 and is directly opposite to it, ensuring that the third ring 56 fully presses the first ring 2. The force of the third ring 56 is applied evenly and accurately to the first ring 2.

[0048] Reference Figure 2 As shown, in one embodiment of this utility model, the plurality of pressing components further include a pressing circular plate 57 located above the heating plate 9. The pressing cylinder is used to drive the pressing circular plate 57 to descend. The pressing circular plate 57 is used to press the second ring 4 onto the expanded adhesive film, so that the second ring 4 tightly adheres the adhesive film to maintain the tension of the adhesive film so as to cut the waste of the adhesive film. The pressing circular plate 57 is coaxially arranged with the third ring 56, and the pressing circular plate 57 is smaller than the inner ring of the third ring 56. The pressing circular plate 57 can pass through the third ring 56 and adhere to the second ring 4.

[0049] In one embodiment of this utility model, a ring of hollow foam is adhered to the bottom of the pressing disc 57 to prevent the glass of the pressing disc 57 from being crushed.

[0050] Reference Figure 2 As shown, in one embodiment of the present invention, the pressing mechanism 5 further includes a plurality of pressure plates connected to the third ring 56, and the plurality of pressure plates are evenly distributed along the circumference of the third ring 56 to uniformly press down on the circumference of the third ring 56 to ensure the horizontality of the pressing plate 57 during the descent process. The plurality of pressing cylinders drive the plurality of pressure plates to descend respectively.

[0051] Reference Figure 2 As shown, in one embodiment of this utility model, the plurality of pressure plates include a first pressure plate 55a, a second pressure plate 55b, and a third pressure plate 55c, and the plurality of clamping cylinders include a first clamping cylinder 52a for pressing down the first pressure plate 55a, a second clamping cylinder 52b for pressing down the second pressure plate 55b, a third clamping cylinder 52c for pressing down the third pressure plate 55c, and a fourth clamping cylinder 52d for pressing down the circular plate 57.

[0052] Reference Figure 1 and Figure 5As shown, in one embodiment of this utility model, it further includes a machine base 8 equipped with rollers. The machine base 8 has a fixed connecting plate 77 inside and a sliding connecting plate 72 located above the fixed connecting plate 77. The fixed connecting plate 77 is fixedly connected to the machine base 8 by four connecting columns 75. The sliding connecting plate 72 is slidably connected to the four connecting columns 75 in a vertical direction. The pushing assembly 71 is disposed on the fixed connecting plate 77 and is used to lift the sliding connecting plate 72. The rotating assembly and the movable support platform 3 are both disposed on the sliding connecting plate 72, and the fixed support platform 1 is disposed on the machine base 8.

[0053] Reference Figure 5 As shown, in one embodiment of this utility model, the rotating assembly includes a rotary motor 73, a synchronous belt 74, and a synchronous pulley 76. The output end of the rotary motor 73 is driven to the synchronous pulley 76 through the synchronous belt 74. The cutting blade 62 is connected to the synchronous pulley 76, and the rotation of the synchronous pulley 76 drives the cutting blade 62 to rotate along the outer edge of the heating plate 9.

[0054] Reference Figure 5 As shown, in one embodiment of this utility model, the rotating assembly further includes a turntable 78 coaxially connected to the synchronous wheel 76. The cutting blade 62 is slidably connected to the turntable 78 in the vertical direction, enabling the cutting blade 62 to rotate 360°. The cutting blade 62 is connected to the turntable 78 via a return spring. In its natural state, the cutting blade 62 always passes through the gap between the first ring 2 and the heating plate 9 in the vertical direction. Before placing the first ring 2 and the adhesive film, the driving cylinder 6 pulls the cutting blade 62 down to below the fixed support platform 1 to prevent the cutting blade 62 from being placed under the support platform 1. 2. If the operator's hand is scratched, during cutting, the drive cylinder 6 releases the cutting blade 62, and the cutting blade 62 automatically resets. Further, the drive cylinder 6 is connected to the sliding connecting plate 72, and the output end 61 of the drive cylinder 6 is connected to a locking block 64. The side of the locking block 64 is provided with a recess, and the bottom end of the cutting blade 62 is provided with a locking member 63. When the cutting blade 62 rotates to a specific position, the locking member 63 can just rotate into the recess of the locking block 64 and be hooked by the locking block 64 so that the drive cylinder 6 can pull down the cutting blade 62.

[0055] Reference Figure 2 As shown, in one embodiment of the present invention, the machine base 8 is provided with a mounting plate 51 to support a plurality of guide columns 58 of the mounting plate 51, the guide columns 58 are movably sleeved with bushings 53, and the pressure plate is also connected to the bushings 53.

[0056] Reference Figure 2As shown, in one embodiment of this utility model, the first pressing cylinder 52a, the second pressing cylinder 52b, the third pressing cylinder 52c, and the fourth pressing cylinder 52d are all mounted on the mounting plate 51.

[0057] Reference Figure 6 As shown, in one embodiment of this utility model, the fixed support platform 1 is provided with a plurality of positioning pins 12, and the plurality of positioning pins 12 abut against the periphery of the first ring 2 in the horizontal direction to improve the positioning accuracy of the first ring 2.

[0058] Reference Figure 6 and Figure 7 As shown, in one embodiment of the present invention, the third ring 56 is provided with a plurality of clearance holes 561. The clearance holes 561 are arranged vertically opposite to the positioning pin 12. When the third ring 56 presses against the first ring 2, the positioning pin 12 is inserted into the clearance hole 561, so that the third ring 56 is fully fitted on the first ring 2.

[0059] Reference Figure 2 As shown, in one embodiment of the present invention, the pressing circular plate 57 is provided with a guide rod 54, which passes through the guide hole of the mounting plate 51.

[0060] Reference Figure 1 As shown, in one embodiment of this utility model, a cover 81 is also provided on the machine base 8. The pressing mechanism 5, the movable support platform 3, and the fixed support platform 1 are all located inside the cover 81. The cover 81 is provided with an operation port 82, and the operation port 82 is provided with a grating 83.

[0061] The working principle of the expansion machine described in this utility model is as follows:

[0062] First, the heating plate 9 is heated. Then, the first ring 2, which contains the adhesive film and glass sheets, is placed on the fixed support platform 1. The clamping cylinder drives the third ring 56 to descend, pressing the first ring 2 firmly onto the fixed support platform 1. Next, the pushing assembly 71 pushes the heating plate 9 to a predetermined height, causing the heating plate 9 to expand from the bottom of the adhesive film, creating a noticeable gap between adjacent glass sheets. Then, the second ring 4 is placed on the heating plate 9. At this time, the bottom of the second ring 4 adheres to the adhesive film. Next, the clamping cylinder drives the clamping plate 57 to descend, pressing the clamping plate 57 onto the second ring 4. The driving cylinder 6 releases the cutting blade 62, which returns to the cutting height. The rotating assembly drives the cutting blade 62 to rotate once along the outer edge of the second ring 4 to remove excess material from the adhesive film. Finally, the clamping plate 57, the third ring 56, and the heating plate 9 return to their original positions, the cutting blade 62 descends, and the second ring 4 is removed.

[0063] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An extender, characterized by, include, A fixed support platform on which the first circular ring is placed; A movable support platform is provided on which a second ring is placed. The second ring is coaxially arranged with the first ring, and the movable support platform is configured to pass through the first ring. A clamping mechanism includes multiple clamping elements and a clamping cylinder for driving the multiple clamping elements to move. The multiple clamping elements respectively clamp a first ring on the fixed support platform and a second ring on the movable support platform.

2. An expander as claimed in claim 1, wherein It also includes a cutting blade and a drive cylinder, the drive cylinder driving the cutting blade through the gap between the second ring and the first ring.

3. An expander as claimed in claim 2, wherein It also includes a rotary jacking mechanism, which includes a jacking component and a rotating component. The jacking component jacks the rotating component, the movable support platform, and the cutting blade in a vertical direction, and the rotating component drives the cutting blade to rotate around the outer edge of the second ring.

4. An expansion machine according to claim 1, characterized in that, It also includes a heating plate disposed on the movable support platform, and the second ring is horizontally disposed on the heating plate.

5. An expansion machine according to claim 1, characterized in that, The fixed support platform has a central hole, the movable support platform is smaller than the central hole, and the movable support platform is arranged vertically opposite the central hole.

6. An expansion machine according to claim 5, characterized in that, The surface of the fixed support platform is provided with adhesive material or friction-enhancing structure.

7. An expansion machine according to claim 6, characterized in that, The fixed support platform is provided with an annular groove, which is concentric with the central hole. The friction-enhancing structure is provided with an annular rib, which is accommodated in the annular groove and protrudes from the surface of the fixed support platform.

8. An expansion machine according to claim 4, characterized in that, The plurality of clamping components include a third ring, which is driven to descend by the clamping cylinder. The third ring is positioned above the first ring and is coaxial with and directly opposite the first ring.

9. An expansion machine according to claim 8, characterized in that, The plurality of clamping components also include a clamping circular plate located above the heating plate, the clamping cylinder driving the clamping circular plate to descend, the clamping circular plate being coaxially arranged with the third ring, and the clamping circular plate being smaller than the inner ring of the third ring.

10. An expansion machine according to claim 8, characterized in that, The clamping mechanism further includes multiple pressure plates connected to the third ring, and the multiple pressure plates are evenly distributed along the circumference of the third ring. The multiple clamping cylinders drive the multiple pressure plates to descend respectively.