A punching device for PET foam board production line

Abstract

The present invention provides a punching device for a PET foam board production line, comprising a conveying roller, a drilling assembly and a lifting assembly; the conveying roller comprises a frame and a roller; the drilling assembly is movably arranged above the conveying roller, and the drilling direction is downward; the lifting assembly is provided with multiple groups between adjacent rollers, arranged in a rectangular array; the lifting assembly comprises a fixed ring, a lifting body and a driving part; the fixed ring is vertically fixed to the frame, is hollow and has an annular negative pressure cavity connected to a negative pressure device, and the inner side wall of the fixed ring is provided with a vertically extending long strip hole; the lifting body sliding seal is arranged in the fixed ring, is hollow and has an adsorption cavity, the top of the lifting body is provided with an adsorption hole connecting the adsorption cavity to the outside, and the circumferential side wall of the lifting body is provided with a connecting hole; the driving part has a driving end for driving the lifting body to rise and fall. The punching device of the present invention can improve the production and molding efficiency of PET foam boards.

Description

Technical Field

[0001] The invention relates to the technical field of plate forming, in particular to a punching device used in a PET foaming plate production line. Background Art

[0002] PET (Polyethylene terephthalate) foam board is the main type of thermoplastic polyester. It has good physical and mechanical properties, such as high strength and good toughness, and can withstand certain external forces without being easily damaged. In addition, PET has a certain barrier property to gases such as oxygen and carbon dioxide, has good chemical stability, and is not easily corroded, which makes it widely used in packaging, construction, automobile manufacturing and other fields.

[0003] PET foam boards are usually mass-produced on production lines with high production efficiency. However, some PET foam board products require punching and forming. Existing production equipment makes it difficult to achieve uniform punching of PET foam boards on the production line. The PET foam boards can only be drilled and formed using drilling equipment after they leave the production line, resulting in low production efficiency of PET foam boards. Summary of the invention

[0004] In order to improve the production and molding efficiency of PET foam boards, the present application provides a punching device for a PET foam board production line.

[0005] The present application provides a punching device for a PET foam board production line using the following technical solution:

[0006] A punching device for a PET foam board production line, comprising a conveying roller, a drilling assembly and a lifting assembly;

[0007] The conveying roller comprises a frame and a roller; the drilling assembly is movably arranged above the conveying roller, with the drilling direction facing downward; the lifting assembly is provided with multiple groups between adjacent rollers, arranged in a rectangular array;

[0008] The lifting assembly includes a fixing ring, a lifting body and a driving part;

[0009] The fixing ring is vertically fixed to the frame, is hollow and has an annular negative pressure cavity connected to the negative pressure device, and the inner side wall of the fixing ring is provided with a vertically extending long strip hole; the lifting body sliding seal is arranged in the fixing ring, is hollow and has an adsorption cavity, the top of the lifting body is provided with an adsorption hole connecting the adsorption cavity to the outside, and the circumferential side wall of the lifting body is provided with a connecting hole; the driving part has a driving end for driving the lifting body to rise and fall;

[0010] When the top of the lifting body rises to a position higher than the top of the roller, the connecting hole is connected to the long hole, and the adsorption chamber generates negative pressure. The lifting body can adsorb the PET foam board through the adsorption hole and drive it to rise and fall.

[0011] By adopting the above technical scheme, the conveying roller can convey the PET foam board. When drilling is required, the lifting assembly lifts the PET foam board. The lifting body rises under the action of the driving part to lift the PET foam board off the roller. After the connecting hole is connected with the long hole, negative pressure is generated in the adsorption chamber, and the PET foam board can be firmly adsorbed through the adsorption hole. Then the drilling assembly can be used to perform the drilling operation, thereby improving the production and forming efficiency of the PET foam board. At the same time, it can also match the rhythm of the production line and unidirectionally convey the punched and formed PET foam board to the next workstation; lifting assemblies at different positions can be selected according to the specific size and specifications of the PET foam board, so that the PET foam board is supported more evenly. If there is interference with the lifting assembly corresponding to the drilling position, the lifting assembly at this location can be omitted, and the PET foam board can be stably supported by the lifting assemblies around the drilling position alone; if the bottom of the PET foam board has a stepped structure, the corresponding lifting assemblies can adapt to the PET foam board by lifting the lifting body to different heights.

[0012] Optionally, the driving unit includes an electric push rod;

[0013] The electric push rod is arranged in the fixing ring and fixedly connected to the frame, and the piston end of the electric push rod is the driving end.

[0014] By adopting the above technical solution, the electric push rod is set in the fixed ring, which can reduce the overall space occupied by the lifting component. The stroke of the electric push rod is accurate and the PET foam board can be lifted well.

[0015] Optionally, a support portion expanding in its radial direction is provided at the top of the lifting body, and the adsorption hole is arranged at the top of the support portion.

[0016] By adopting the above technical solution, a radially expanding support portion is provided at the top of the lifting body, which can increase the contact area with the PET board, and the area for arranging the adsorption holes is also larger, which can enhance the support and adsorption effect on the PET foam board and make the PET foam board more stable when being drilled and shaped.

[0017] Optionally, the bottom opening of the fixing ring is blocked by the frame, a sealing ring is provided at the top of the fixing ring, the sealing ring is sleeved outside the lifting body, and a pressure ring is threadedly connected to the top of the fixing ring, and the pressure ring can press the sealing ring between the fixing ring and the lifting body.

[0018] By adopting the above technical solution, the bottom opening of the fixing ring is blocked, so that after the bottom end of the lifting body is separated from the long hole, the fixed ring can maintain a sealed negative pressure state; the pressure ring presses the sealing ring, which can improve the sealing effect between the lifting body and the fixing ring and enhance the adsorption capacity.

[0019] Optionally, the conveying roller is provided with a first liftable reference body at the rear end in the conveying direction, and the first reference body is used for the PET foam board to be positioned against.

[0020] By adopting the above technical solution, the first reference body can be aligned with the first reference body when the PET foam board is conveyed by the conveying roller and abuts against it, so that the drilling component can determine the drilling position of the PET foam board.

[0021] Optionally, the punching device further includes a second reference body and a pushing assembly;

[0022] The second reference body is arranged on a side of the frame perpendicular to the conveying direction, and the pushing assembly can push the PET foam board to be close to the second reference body.

[0023] By adopting the above technical solution, the pushing component can move the PET foam board along the axial direction of the roller, and align it with the second reference body after being abutted against the second reference body, so that the drilling component can determine the drilling position of the PET foam board.

[0024] Optionally, the pushing assembly includes a cam, a body and a driving member;

[0025] The machine body is arranged on the frame, the cam is rotatably arranged on the machine body, and the driving member is used to drive the cam to rotate;

[0026] The top of the base circle part of the cam is lower than the top of the roller when rotating, and the flange part of the cam can be intermittently higher than the top of the roller when rotating to form a push for the PET foam plate.

[0027] By adopting the above technical solution, when the cam is driven by the driving member to rotate, its flange can intermittently push and move the PET foam board. When the flange rotates to below the top of the roller, it does not affect the normal transportation of the PET foam board by the roller.

[0028] Optionally, the drilling assembly includes a gantry, a mobile frame and a drilling machine;

[0029] The gantry spans across the conveying roller and can move along the conveying direction of the conveying roller; the moving frame is slidably arranged on the crossbeam of the gantry; the drilling machine is liftably arranged on the moving frame.

[0030] By adopting the above technical solution, the movement of the gantry and the movement of the mobile frame on the gantry constitute the movement of the drilling machine in the plane direction. Combined with the lifting and lowering of the drilling machine, drilling operations at different positions on the PET foam board can be achieved.

[0031] Optionally, the punching device further includes a pressing component;

[0032] The pressing assembly includes a tube body, a rod body, a spring and a pressure plate, wherein the tube body is fixed on the drilling machine; one end of the rod body is slidably arranged in the tube body, and the other end is connected to the pressure plate; the spring is arranged between the tube body and the rod body, and can push the rod body downward; the pressure plate is used to contact and press the PET foam board.

[0033] By adopting the above technical solution, under the action of the spring, when the drilling machine moves downward, the pressing plate can press the PET foam board downward, so that the PET foam board is fixed more firmly during drilling.

[0034] Optionally, the pressing plate is annular, and the drill bit of the drilling machine can pass through the pressing plate, and the pressing plate connects a plurality of the rod bodies.

[0035] By adopting the above technical solution, the annular pressing plate can better press the PET foam board when drilling, which is beneficial to reducing the vibration of the PET foam board when drilling.

[0036] In summary, the present application includes at least one of the following beneficial technical effects:

[0037] 1. The conveying roller can convey the PET foam board. When drilling is required, the lifting assembly lifts the PET foam board. The lifting body rises under the action of the driving unit to lift the PET foam board off the roller. After the connecting hole is connected with the long hole, negative pressure is generated in the adsorption chamber, and the PET foam board can be firmly adsorbed through the adsorption hole. Then the drilling assembly can be used for drilling, which improves the production efficiency of the PET foam board. At the same time, it can also match the rhythm of the production line and transport the punched PET foam board to the next station in one direction;

[0038] 2. Setting the electric push rod in the fixed ring can reduce the overall space occupied by the lifting component. The stroke of the electric push rod is accurate and can lift the PET foam board well.

[0039] 3. A radially expanded support part is arranged at the top of the lifting body, which can increase the contact area with the PET board and the area where the adsorption holes can be arranged is also larger, which can enhance the support and adsorption effect of the PET foam board and make the PET foam board more stable when being drilled and shaped;

[0040] 4. Blocking the bottom opening of the fixing ring can keep the sealing negative pressure in the fixing ring even after the bottom of the lifting body is separated from the long hole; the pressure ring presses the sealing ring tightly, which can improve the sealing effect between the lifting body and the fixing ring and enhance the adsorption capacity;

[0041] 5. When the cam is driven by the driving member to rotate, its flange can intermittently push and move the PET foam board. When the flange rotates to be lower than the top of the roller, it does not affect the normal conveying of the PET foam board by the roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0043] Figure 1 A schematic diagram of the structure of a punching device according to an embodiment of the present invention;

[0044] Figure 2 A schematic diagram of the positional relationship between the lifting assembly and the pushing assembly according to an embodiment of the present invention;

[0045] Figure 3 A schematic diagram of the internal structure of a lifting assembly according to an embodiment of the present invention;

[0046] Figure 4 A partial cross-sectional schematic diagram of a drilling assembly according to an embodiment of the present invention;

[0047] Figure 5 It is a schematic structural diagram of the punching device described in an embodiment of the present invention.

[0048] Description of reference numerals:

[0049] 1. Conveyor roller; 11. Frame; 12. Roller;

[0050] 2. Drilling assembly; 21. Gantry; 22. Mobile frame; 23. Drilling machine;

[0051] 3. Lifting assembly; 31. Fixing ring; 311. Negative pressure chamber; 312. Long hole; 32. Lifting body; 321. Adsorption chamber; 322. Adsorption hole; 323. Connecting hole; 324. Support part; 33. Driving part; 331. Driving end; 34. Sealing ring; 35. Pressing ring;

[0052] 4. The first reference body;

[0053] 5. The second reference body;

[0054] 6. Pushing assembly; 61. Cam; 611. Flange portion; 62. Machine body; 63. Driving member;

[0055] 7. Pressing assembly; 71. Tube body; 72. Rod body; 73. Spring; 74. Pressing plate. DETAILED DESCRIPTION

[0056] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0057] In the description of the present invention, it should be noted that if there are terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc., they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first", "second", etc., they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0058] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installed", "connected", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0059] The following is combined with Figure 1 -Attached Figure 5 , further details of this application are given.

[0060] This application proposes a punching device for a PET foam board production line, referring to Figure 1-Figure 3 As shown, it includes a conveyor roller 1, a drilling assembly 2 and a lifting assembly 3. The conveyor roller 1 includes a frame 11 and a roller 12. The drilling assembly 2 is movably arranged above the conveyor roller 1, and the drilling direction is downward. A plurality of lifting assemblies 3 are provided between adjacent rollers 12, arranged in a rectangular array.

[0061] The lifting assembly 3 includes a fixed ring 31, a lifting body 32 and a driving part 33. The fixed ring 31 is vertically fixed to the frame 11, is hollow and has an annular negative pressure chamber 311 connected to the negative pressure device, and the inner wall of the fixed ring 31 is provided with a vertically extending long strip hole 312. The lifting body 32 is slidingly sealed and arranged in the fixed ring 31, is hollow and has an adsorption chamber 321, and the top of the lifting body 32 is provided with an adsorption hole 322 that connects the adsorption chamber 321 to the outside, and the circumferential side wall of the lifting body 32 is provided with a connecting hole 323. The driving part 33 has a driving end 331 for driving the lifting body 32 to rise and fall.

[0062] When the top of the lifting body 32 rises to be higher than the top of the roller 12 , the connecting hole 323 is connected with the long hole 312 , and the adsorption chamber 321 generates negative pressure. The lifting body 32 can adsorb the PET foam board through the adsorption hole 322 and drive it to rise and fall.

[0063] As configured above, the conveying roller 1 can convey the PET foam board. When drilling is required, the lifting component 3 lifts the PET foam board. The lifting body 32 rises under the action of the driving part 33 to lift the PET foam board off the roller. After the connecting hole 323 is connected with the long hole 312, a negative pressure is generated in the adsorption chamber 321, and the PET foam board can be firmly adsorbed through the adsorption hole 322. Then the drilling component 2 can be used to perform the drilling operation, which improves the production and molding efficiency of the PET foam board. At the same time, it can also match the rhythm of the production line and unidirectionally transport the punched and molded PET foam board to the next workstation.

[0064] In the specific implementation, the lifting components 3 at different positions can be selected according to the specific size and specifications of the PET foam board, so that the support of the PET foam board is more balanced. If there is interference between the lifting components 3 corresponding to the punching position, the lifting components 3 at this location can be omitted, and the PET foam board can also be stably supported by the lifting components 3 around the punching position alone. It can be understood that if the bottom of the PET foam board has a stepped structure, the corresponding lifting components 3 can be adapted to the PET foam board by lifting the lifting body 32 to different heights. The connecting hole 323 slides up and down within the range of the long hole 312, and can maintain the connection between the adsorption chamber 321 and the negative pressure chamber 311. For every two rows of lifting components 3, their fixing rings 31 are connected to the negative pressure device through a pipeline to create a negative pressure in each negative pressure chamber 311.

[0065] As for the specific structure of the driving part 33, the driving part 33 of this embodiment includes an electric push rod. The electric push rod is arranged in the fixing ring 31 and fixedly connected to the frame 11, and the piston end of the electric push rod is the driving end 331. The electric push rod is arranged in the fixing ring 31, which can reduce the overall space occupied by the lifting assembly 3, and the stroke of the electric push rod is accurate, which can better lift the PET foam board. Of course, the driving part 33 can also be a cylinder, a hydraulic cylinder, etc., as long as it can control the lifting of the lifting body 32.

[0066] In order to improve the supporting and fixing effect of the lifting body 32 on the PET foam board, the top of the lifting body 32 is provided with a supporting portion 324 that expands along its own radial direction, and the adsorption hole 322 is arranged at the top of the supporting portion 324. The radially expanding supporting portion 324 is arranged at the top of the lifting body 32, which can increase the contact area with the PET board, and the area where the adsorption hole 322 can be arranged is also larger, which can improve the supporting and adsorption effect on the PET foam board, and make the PET foam board more stable when being drilled and shaped. Specifically, the supporting portion 324 is cylindrical.

[0067] In addition, the bottom opening of the fixing ring 31 is blocked by the frame 11, and a sealing ring 34 is provided at the top of the fixing ring 31. The sealing ring 34 is sleeved outside the lifting body 32. The top of the fixing ring 31 is threadedly connected with a pressure ring 35, and the pressure ring 35 can press the sealing ring 34 between the fixing ring 31 and the lifting body 32. Blocking the bottom opening of the fixing ring 31 can keep the sealing negative pressure state in the fixing ring 31 after the bottom end of the lifting body 32 is separated from the long hole 312. The pressure ring 35 presses the sealing ring 34, which can improve the sealing effect between the lifting body 32 and the fixing ring 31 and enhance the adsorption capacity. The sealing ring 34 of this embodiment is made of rubber and is a ring with a rectangular cross-section.

[0068] In order to facilitate finding the punching position on the PET foam board, the conveyor roller 1 is provided with a liftable first reference body 4 at the rear end in the conveying direction, and the first reference body 4 is provided for the PET foam board to abut and position. The first reference body 4 is arranged so that when the PET foam board is conveyed and abutted by the conveyor roller 1, it can be aligned with the first reference body 4, so that the drilling assembly 2 can determine the drilling position of the PET foam board. The first reference body 4 of this embodiment is a plurality of electric cylinders arranged at intervals along the circumference of the roller 12. When the piston rod of the electric cylinder is raised, it can block the movement of the PET foam board and play a positioning role. When the PET foam board needs to pass, the piston rod of the electric cylinder is lowered to allow the PET foam board to pass.

[0069] Secondly, the punching device also includes a second reference body 5 and a push assembly 6. The second reference body 5 is arranged on a side of the frame 11 perpendicular to the conveying direction, and the push assembly 6 can push the PET foam board to abut against the second reference body 5. The push assembly 6 can move the PET foam board axially along the roller 12, and after abutting against the second reference body 5, align with the second reference body 5, so as to facilitate the drilling assembly 2 to determine the drilling position of the PET foam board. The second reference body 5 of this embodiment is in the shape of a long strip and is fixed on one side of the frame 11 of the conveying roller 1.

[0070] Specifically, refer to Figure 2 and Figure 5 The pushing assembly 6 includes a cam 61, a body 62 and a driving member 63. The body 62 is arranged on the frame 11, the cam 61 is rotatably arranged on the body 62, and the driving member 63 is used to drive the cam 61 to rotate. The top of the base circle part of the cam 61 is lower than the top of the roller 12 when rotating, and the flange part 611 of the cam 61 can be intermittently higher than the top of the roller 12 when rotating, so as to push the PET foam board. When the cam 61 is driven by the driving member 63 to rotate, its flange can intermittently push and move the PET foam board. When the flange rotates to be lower than the top of the roller 12, it does not affect the normal transportation of the PET foam board by the roller 12.

[0071] The driving member 63 of this embodiment is a servo motor, and the transmission structure between the cam 61 and the servo motor is a synchronous belt drive. Of course, other transmission methods such as chain drive, belt drive, gear drive, etc. can also be used as long as the cam 61 can be driven smoothly.

[0072] Reference Figure 1 and Figure 4 The drilling assembly 2 includes a gantry 21, a mobile frame 22 and a drilling machine 23. The gantry 21 spans the conveying roller 1 and can move along the conveying direction of the conveying roller 1. The mobile frame 22 is slidably arranged on the crossbeam of the gantry 21. The drilling machine 23 is arranged on the mobile frame 22 in a lifting manner. The movement of the gantry 21 and the movement of the mobile frame 22 on the gantry 21 constitute the movement of the drilling machine 23 in the plane direction. In addition, the lifting and lowering of the drilling machine 23 can realize the drilling operation at different positions on the PET foam board.

[0073] The punching device further includes a pressing assembly 7. The pressing assembly 7 includes a tube body 71, a rod body 72, a spring 73 and a pressing plate 74. The tube body 71 is fixed on the drilling machine 23. One end of the rod body 72 is slidably arranged in the tube body 71, and the other end is connected to the pressing plate 74. The spring 73 is arranged between the tube body 71 and the rod body 72, and can push the rod body 72 downward. The pressing plate 74 is used to contact and press the PET foam board. Under the action of the spring 73, when the drilling machine 23 moves downward, the pressing plate 74 can press the PET foam board downward, so that the PET foam board is fixed more firmly during drilling.

[0074] Preferably, the pressing plate 74 is annular, and the drill bit of the drilling machine 23 can pass through the pressing plate 74, and the pressing plate 74 is connected to the plurality of rods 72. The annular pressing plate 74 can better press the PET foam board when drilling, which is conducive to reducing the vibration of the PET foam board when drilling. A sponge layer is also provided at the bottom end of the pressing plate 74, so that the PET foam board will not be damaged when the pressing plate 74 presses the PET foam board.

[0075] The implementation principle of this embodiment is as follows: the PET foam board is fed into the conveyor roller 1 by the previous workstation of the production line, and is conveyed to the first reference body 4 and stops, the pushing component 6 is started to move the PET foam board to be close to the second reference body 5, and the lifting component 3 is selected to lift and adsorb the PET foam board according to the shape of the PET foam board and the position of the opening, and then the drilling component 2 is controlled to drill and form the predetermined drilling holes of the PET foam board. After the drilling is completed, the electric cylinder of the first reference body 4 contracts, and the conveyor roller 1 is started again to convey the PET foam board forward to the next workstation.

[0076] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A punching device for a PET foam board production line, characterized in that: It comprises a conveying roller (1), a drilling assembly (2) and a lifting assembly (3); The conveying roller (1) comprises a frame (11) and a rotating roller (12); the drilling assembly (2) is movably arranged above the conveying roller (1), with the drilling direction facing downward; a plurality of lifting assemblies (3) are provided between adjacent rotating rollers (12), and are arranged in a rectangular array; The lifting assembly (3) comprises a fixing ring (31), a lifting body (32) and a driving part (33); The fixing ring (31) is vertically fixed to the frame (11), is hollow and has an annular negative pressure chamber (311) connected to the negative pressure device, and the inner side wall of the fixing ring (31) is provided with a vertically extending long strip hole (312); the lifting body (32) is slidingly sealed and arranged in the fixing ring (31), is hollow and has an adsorption chamber (321), the top end of the lifting body (32) is provided with an adsorption hole (322) connecting the adsorption chamber (321) to the outside, and the circumferential side wall of the lifting body (32) is provided with a connecting hole (323); the driving part (33) has a driving end (331) for driving the lifting body (32) to move up and down; When the top of the lifting body (32) rises to a position higher than the top of the rotating roller (12), the connecting hole (323) is connected to the long hole (312), the adsorption chamber (321) generates negative pressure, and the lifting body (32) can adsorb the PET foam board through the adsorption hole (322) and drive it to rise and fall.

2. A punching device for a PET foam board production line according to claim 1, characterized in that: The driving part (33) comprises an electric push rod; The electric push rod is arranged in the fixing ring (31) and is fixedly connected to the frame (11); the piston end of the electric push rod is the driving end (331).

3. The punching device for a PET foam board production line according to claim 1, characterized in that: The top end of the lifting body (32) is provided with a support portion (324) that expands in its radial direction, and the adsorption hole (322) is arranged at the top end of the support portion (324).

4. The punching device for a PET foam board production line according to claim 1, characterized in that: The bottom opening of the fixing ring (31) is blocked by the frame (11); a sealing ring (34) is provided at the top of the fixing ring (31); the sealing ring (34) is sleeved outside the lifting body (32); a pressing ring (35) is threadedly connected to the top of the fixing ring (31); the pressing ring (35) can press the sealing ring (34) between the fixing ring (31) and the lifting body (32).

5. The punching device for a PET foam board production line according to claim 1, characterized in that: The conveying roller (1) is provided with a first reference body (4) which can be lifted and lowered at the rear end in the conveying direction, and the first reference body (4) is used for the PET foam board to be pressed against and positioned.

6. The punching device for a PET foam board production line according to claim 5, characterized in that: The punching device further comprises a second reference body (5) and a pushing assembly (6); The second reference body (5) is arranged on a side of the frame (11) perpendicular to the conveying direction, and the pushing assembly (6) is capable of pushing the PET foam plate to abut against the second reference body (5).

7. The punching device for a PET foam board production line according to claim 6, characterized in that: The pushing assembly (6) comprises a cam (61), a body (62) and a driving member (63); The machine body (62) is arranged on the frame (11), the cam (61) is rotatably arranged on the machine body (62), and the driving member (63) is used to drive the cam (61) to rotate; The top end of the base circle portion of the cam (61) is lower than the top end of the roller (12) when rotating, and the flange portion (611) of the cam (61) can be intermittently higher than the top end of the roller (12) when rotating, so as to push the PET foam plate.

8. The punching device for a PET foam board production line according to claim 1, characterized in that: The drilling assembly (2) comprises a gantry (21), a mobile frame (22) and a drilling machine (23); The gantry (21) spans the conveying roller conveyor (1) and is movable along the conveying direction of the conveying roller conveyor (1); the movable frame (22) is slidably arranged on the crossbeam of the gantry (21); and the drilling machine (23) is liftably arranged on the movable frame (22).

9. The punching device for a PET foam board production line according to claim 8, characterized in that: The punching device further comprises a pressing component (7); The pressing assembly (7) comprises a tube body (71), a rod body (72), a spring (73) and a pressing plate (74); the tube body (71) is fixed on the drilling machine (23); one end of the rod body (72) is slidably arranged in the tube body (71), and the other end is connected to the pressing plate (74); the spring (73) is arranged between the tube body (71) and the rod body (72) and can push the rod body (72) downward; the pressing plate (74) is used to contact and press the PET foam board.

10. The punching device for a PET foam board production line according to claim 9, characterized in that: The pressing plate (74) is annular in shape, and a drill bit of the drilling machine (23) can pass through the pressing plate (74). The pressing plate (74) is connected to a plurality of the rod bodies (72).

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