Plate frame laser cutting device for solar frame machining

Abstract

The invention relates to the technical field of solar energy processing equipment, and particularly discloses a plate frame laser cutting device for solar energy frame processing, which comprises a main frame, the main frame is rectangular, and the main frame is slidably connected with a limiting rod. By arranging the traction belt transmission mode, different from gear connection in the prior art, the problem that equipment is shut down due to the fact that a mounting plate is difficult to move due to the fact that a first roller is difficult to rotate due to gear rusting in a humid area all the year round is solved, meanwhile, the traction belt has elasticity and can generate flexural deformation during torsion and bending, and the service life of the traction belt is prolonged. The deformation can eliminate impact force of movement during transmission, so that the transmission is more stable and reliable, vibration can be absorbed, noise is reduced, the working continuity of the equipment is greatly improved, the risk of shutdown is greatly reduced, and the traction belt system does not need to be lubricated like a gear, so that the maintenance is simpler, and the maintenance cost and the workload are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of solar energy processing equipment, in particular to a plate frame laser cutting device for solar energy frame processing. Background Art

[0002] Laser cutting is a high-precision processing technology that uses a focused high-power laser beam to irradiate the material, causing it to melt, vaporize, ablate or reach a burning point quickly, and then uses a high-speed airflow coaxial with the beam to blow away the molten material, thereby cutting the workpiece. This technology is one of the thermal cutting methods.

[0003] In the process of solar frame processing, the cutting of sheet frame is an important link. Traditional cutting devices often have some problems. For example, in terms of transmission mode, gear connection is often used, but in some areas with high humidity all year round, gears are prone to rust, which will make it difficult for the rollers connected to them to rotate, and then the mounting plate cannot move normally, eventually causing equipment shutdown and affecting production efficiency. Moreover, gear transmission requires lubrication, which not only increases maintenance costs and workload, but also may cause lubricating oil dripping to pollute the production environment. In addition, during the cutting process, dust and impurities may accumulate on the surface of the limit rod, which will cause vibration when the roller moves, thereby reducing the cutting accuracy. At the same time, the components used for transmission (such as belts, etc.) may become loose, which will cause slipping, affect the structural stability, and reduce the service life of the components. These problems restrict the quality and efficiency of solar frame processing, so a new type of sheet frame laser cutting device is needed to solve these problems. Summary of the invention

[0004] The present invention provides a plate frame laser cutting device for processing solar frame, which solves the problems mentioned in the above background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a plate frame laser cutting device for solar frame processing, comprising a main frame, the main frame is set in a rectangular shape, a limit rod is slidably connected to the main frame, and also includes:

[0006] A cutting mechanism, the cutting mechanism is movably connected to the limit rod, and the cutting mechanism is used to perform laser cutting on the solar frame;

[0007] An auxiliary mechanism, wherein the auxiliary mechanism is fixedly mounted on the cutting mechanism and is used to cooperate with the cutting mechanism to work;

[0008] The cutting mechanism comprises a traction belt, which is movably engaged with the upper surface of the limit rod, and the traction belt and the upper surface of the limit rod are in the same horizontal plane, and mounting plates are symmetrically arranged on both sides of the traction belt, and the mounting plates are respectively arranged on both sides of the limit rod, and a motor is fixedly installed on the top outer surface of the mounting plate by bolts, and the output end of the motor is rotatably connected to a rotating shaft, and the end of the rotating shaft away from the motor is fixedly connected to a rotating tube, and the outer surface of the end of the rotating tube away from the rotating shaft is wound around the inner surface of the traction belt, and a laser cutter is fixedly installed on the middle outer surface of the mounting plate, and the laser cutter is vertically arranged, and the bottom of the laser cutter is arranged below the limit rod.

[0009] Preferably, the surface of the mounting plate away from the motor side is rotatably connected to a first roller, two first rollers are symmetrically arranged, the outer surface of the first roller is embedded and rollingly arranged on the upper surface of the limit rod, and the outer surface of the first roller is wound on the outer surface of the traction belt.

[0010] Preferably, the bottom of the mounting plate is rotatably connected to the surface of one side away from the motor, and the outer surface of the second roller is embedded and rollingly arranged on the lower surface of the limit rod, and the second roller and the rotating tube are in the same vertical plane. When the solar frame needs to be cut, the main frame of the device can be installed to the specified position on the production line, and then the motor is started. When the motor is started, the rotating tube is driven to rotate through the rotating shaft. When the rotating tube starts to rotate, the mounting plate as a whole is driven to move horizontally on the limit rod through the restraining effect of the traction belt and the first roller, and the mounting plate can be controlled to move longitudinally by controlling the movement of the limit rod on the main frame, and the cutting of the solar frame is completed by the laser cutter on the outer surface of the mounting plate.

[0011] Preferably, the auxiliary mechanism includes a positioning plate, which is symmetrically fixedly connected to the two side surfaces of the mounting plate, and the inner surface of the positioning plate is fixedly connected to an extrusion plate, which is arranged in a semicircular shape, and the bottom surface of the extrusion plate is extruded and fitted onto the upper surface of the limiting rod.

[0012] Preferably, the bottom surface thickness of the extruded plate is thinner than the thickness of the two sides, and a central column is provided on the inner side of the extruded plate, and both ends of the central column are respectively fixedly connected to the inner surface of the positioning plate.

[0013] Preferably, the center column is configured as a boss type, and the bottom surface of the center column is symmetrically fixedly connected with a limiting plate. The limiting plates on the same center column are configured as a group, and the limiting plates in the same group are configured in an eight-shaped shape, and the end of the limiting plate away from the center column is configured as an arc.

[0014] Preferably, a grinding plate is fixedly connected to the surface of the extrusion plate that is in contact with one side of the limiting rod, and the grinding plate is configured to be hexagonal.

[0015] Preferably, the inner surfaces of both sides of the extrusion plate are fixedly connected with extrusion bags, the outer surface of the extrusion bag on the side away from the extrusion plate is fixedly connected to the outer surfaces of both sides of the central column, the inner surface of the extrusion bag is fixedly connected with a stabilizing plate, the stabilizing plate is configured to be nearly U-shaped, the stabilizing plate is configured to be an elastic plate, and the two sides of the stabilizing plate are configured to be folded.

[0016] Preferably, a mounting groove is provided at one end of the rotating tube away from the motor, and the mounting groove is arranged in an annular shape. A supporting ring is fixedly connected to the inner surface of the mounting groove, and an expansion plate is fitted on the outer surface of the supporting ring. Six expansion plates are arranged at fixed intervals around the central axis of the supporting ring, and the six expansion plates are initially in contact with each other. A plug-in plate is fixedly connected to the inner surface of the expansion plate, and the inner end of the plug-in plate penetrates the supporting ring and is arranged inside the supporting ring. A first expansion plate is fixedly connected to the inner end of the plug-in plate, and a second expansion plate is elastically and slidably plugged in at both ends of the first expansion plate. The first expansion plate and the second expansion plate are combined into an annular shape, and the internal cavity of the supporting ring is connected to the internal cavity of the extrusion bag. When the mounting plate moves on the limit rod as the motor is started, the extrusion plate on the positioning plate will also move by friction on the upper surface of the limit rod. Since the bottom surface of the extrusion plate is fixedly connected with a grinding plate, and the grinding plate is arranged in a hexagonal shape, as the extrusion plate slides on the upper surface of the limit rod, the grinding plate will rub against the upper surface of the limit rod to grind the limit rod.

[0017] The present invention provides a plate frame laser cutting device for solar frame processing.

[0018] Beneficial effects:

[0019] 1. The plate frame laser cutting device for processing solar frame, by setting the form of traction belt transmission, is different from the gear connection in the prior art, so as to avoid the problem of equipment shutdown caused by rust of gears which makes it difficult to rotate the first roller and thus makes it difficult to move the mounting plate in areas with high humidity all year round. At the same time, the traction belt is elastic and can produce flexural deformation when twisted and bent. This deformation can eliminate the impact force of movement during transmission, making the transmission more stable and reliable. At the same time, it can also absorb vibration, reduce noise, greatly improve the working continuity of the equipment, and greatly reduce the risk of shutdown. The traction belt system does not need lubrication like gears, so maintenance is simpler, reducing maintenance costs and workload, and can also avoid the phenomenon of lubricating oil dripping everywhere to cause a dirty and messy production environment.

[0020] 2. The plate frame laser cutting device for processing the solar frame generates a scraping force on the upper surface of the limit rod through the edges of the grinding plate, so that the upper surface of the limit rod is continuously cleaned during the cutting process, thereby avoiding the accumulation of dust and impurities on the upper surface of the limit rod during long-term use, which causes the first roller and the second roller to vibrate when moving, thereby reducing the cutting accuracy. By supporting the two sides of the bottom surface of the extrusion plate through the limiting plate, it can also avoid the problem that the extrusion plate is irregularly deformed, resulting in the grinding plate being unable to fully fit on the upper surface of the limit rod and reducing the cleaning effect.

[0021] 3. In the plate frame laser cutting device for processing the solar frame, the extrusion plate is an elastic plate, so when the extrusion plate moves on the upper surface of the limit rod, it will also be squeezed in the opposite direction of the movement of the mounting plate, thereby squeezing the extrusion bag inside it, so that the internal air pressure of the extrusion bag is enhanced, and the air pressure is transmitted to the inside of the support ring on the rotating tube, so that the internal air pressure of the support ring is increased, thereby pushing the first expansion plate and the second expansion plate to start moving outward synchronously, and then the expansion plate is caused to expand outward through the plug-in plate, that is, the expansion of the expansion plate produces an extrusion effect on the inner surface of the traction belt, so that the traction belt is in a tensioned state between the rotating tube and the first roller, so as to achieve the traction belt always being kept under a strong elastic force during operation, avoiding the traction belt from being loosened and causing slipping to cause damage to the structure, thereby greatly improving the stability of the device during operation, and after stopping moving, the extrusion plate is reset under the action of the elastic force, so that the mounting plate moves slightly and loses the expansion effect on the traction belt, thereby achieving the expansion of the traction belt only during operation, avoiding the traction belt being in a stretched state all the time to reduce the service life of the traction belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front view of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure of the laser cutter of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the traction belt of the present invention;

[0025] Figure 4 is a schematic structural diagram of the first roller and the second roller of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the auxiliary mechanism of the present invention;

[0027] Figure 6 It is a schematic diagram of the split structure of the auxiliary mechanism of the present invention;

[0028] Figure 7 It is a schematic structural diagram of the grinding plate of the present invention;

[0029] Figure 8 It is a structural schematic diagram of the rotating tube of the present invention.

[0030] In the figure: 1. main frame; 2. limit rod; 3. cutting mechanism; 31. traction belt; 32. mounting plate; 33. motor; 34. rotating shaft; 35. rotating tube; 36. laser cutter; 37. first roller; 38. second roller; 4. auxiliary mechanism; 41. positioning plate; 42. extrusion plate; 43. center column; 44. limit plate; 45. grinding plate; 46. extrusion bag; 47. stabilizing plate; 48. mounting groove; 49. supporting ring; 410. expansion plate; 411. plug-in plate; 412. first expansion plate; 413. second expansion plate. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] First embodiment: Figures 1 to 8 As shown, the present invention provides a technical solution: a plate frame laser cutting device for solar frame processing, comprising a main frame 1, the main frame 1 is set in a rectangular shape, the main frame 1 is slidably connected to a limit rod 2, and also includes:

[0033] A cutting mechanism 3, which is movably connected to the limiting rod 2 and is used for laser cutting the solar frame;

[0034] Auxiliary mechanism 4, the auxiliary mechanism 4 is fixedly mounted on the cutting mechanism 3, and the auxiliary mechanism 4 is used to cooperate with the cutting mechanism 3 to work;

[0035] The cutting mechanism 3 includes a traction belt 31, which is movably engaged with the upper surface of the limit rod 2. The traction belt 31 and the upper surface of the limit rod 2 are in the same horizontal plane. Mounting plates 32 are symmetrically arranged on both sides of the traction belt 31. The mounting plates 32 are respectively arranged on both sides of the limit rod 2. A motor 33 is fixedly installed on the top outer surface of the mounting plate 32 by bolts. The output end of the motor 33 is rotatably connected to a rotating shaft 34. The end of the rotating shaft 34 away from the motor 33 is fixedly connected to a rotating tube 35. The outer surface of the end of the rotating tube 35 away from the rotating shaft 34 is wound around the inner surface of the traction belt 31. A laser cutter 36 is fixedly installed on the middle outer surface of the mounting plate 32. The laser cutter 36 is vertically arranged, and the bottom of the laser cutter 36 is arranged below the limit rod 2.

[0036] The surface of the mounting plate 32 away from the motor 33 is rotatably connected to the first roller 37, and two first rollers 37 are symmetrically arranged. The outer surface of the first roller 37 is embedded and rollingly arranged on the upper surface of the limit rod 2, and the outer surface of the first roller 37 is wound on the outer surface of the traction belt 31.

[0037] The bottom surface of the mounting plate 32 away from the motor 33 is rotatably connected to a second roller 38 , the outer surface of the second roller 38 is engaged and rollingly arranged on the lower surface of the limiting rod 2 , and the second roller 38 and the rotating tube 35 are in the same vertical plane.

[0038] During operation, when it is necessary to cut the solar frame, the main frame 1 of the device can be installed at the specified position on the production line, and then the motor 33 is started. When the motor 33 is started, the rotating tube 35 is driven to rotate through the rotating shaft 34. When the rotating tube 35 starts to rotate, the restraining effect of the traction belt 31 and the first roller 37 drives the mounting plate 32 as a whole to move horizontally on the limit rod 2. By controlling the movement of the limit rod 2 on the main frame 1, the mounting plate 32 can be controlled to move longitudinally, and the cutting of the solar frame is completed by the laser cutter 36 on the outer surface of the mounting plate 32. The traction belt 31 is set to drive the form, which is different from the prior art. The gear connection avoids the problem of equipment shutdown caused by rusted gears, which makes it difficult for the first roller 37 to rotate and the mounting plate 32 to move in areas with high humidity all year round. At the same time, the traction belt 31 is elastic and can produce flexural deformation when twisted and bent. This deformation can eliminate the impact force of movement during transmission, making the transmission more stable and reliable. It can also absorb vibration and reduce noise, greatly improve the working continuity of the equipment, and greatly reduce the risk of shutdown. The traction belt 31 system does not need lubrication like gears, so maintenance is simpler, reducing maintenance costs and workload, and can also avoid the phenomenon of lubricating oil dripping everywhere, causing a dirty and messy production environment.

[0039] Second embodiment: Figures 1 to 8 As shown, the auxiliary mechanism 4 includes a positioning plate 41, which is symmetrically fixedly connected to the two side surfaces of the mounting plate 32, and the inner surface of the positioning plate 41 is fixedly connected with an extrusion plate 42, which is set to be semicircular, and the bottom surface of the extrusion plate 42 is extruded and fits on the upper surface of the limit rod 2.

[0040] The bottom surface of the extrusion plate 42 is thinner than the thickness of the two sides. A center column 43 is provided inside the extrusion plate 42 , and both ends of the center column 43 are fixedly connected to the inner surface of the positioning plate 41 .

[0041] The center column 43 is configured as a boss type, and the bottom surface of the center column 43 is symmetrically fixedly connected to the limit plate 44. The limit plates 44 on the same center column 43 are configured as a group, and the same group of limit plates 44 are configured in an eight-shaped configuration, and the end of the limit plate 44 away from the center column 43 is configured as an arc.

[0042] A grinding plate 45 is fixedly connected to the surface of the extrusion plate 42 that is in contact with one side of the limiting rod 2 , and the grinding plate 45 is configured to be hexagonal.

[0043] The inner surfaces of both sides of the extrusion plate 42 are fixedly connected with extrusion bags 46, the outer surface of the extrusion bag 46 on the side away from the extrusion plate 42 is fixedly connected to the outer surfaces of both sides of the central column 43, the inner surface of the extrusion bag 46 is fixedly connected with a stabilizing plate 47, the stabilizing plate 47 is configured to be nearly U-shaped, the stabilizing plate 47 is configured to be an elastic plate, and the two sides of the stabilizing plate 47 are configured to be folded.

[0044] An installation groove 48 is provided at one end of the rotating tube 35 away from the motor 33. The installation groove 48 is arranged in a ring shape. A support ring 49 is fixedly connected to the inner surface of the installation groove 48. An expansion plate 410 is fitted on the outer surface of the support ring 49. Six expansion plates 410 are arranged at fixed intervals around the central axis of the support ring 49. The six expansion plates 410 are initially in contact with each other. A plug-in plate 411 is fixedly connected to the inner surface of the expansion plate 410. The inner end of the plug-in plate 411 passes through the support ring 49 and is arranged inside the support ring 49. A first expansion plate 412 is fixedly connected to the inner end of the plug-in plate 411. Second expansion plates 413 are elastically and slidably plugged in at both ends of the first expansion plate 412. The first expansion plate 412 and the second expansion plate 413 are combined into a ring shape. The internal cavity of the support ring 49 is connected to the internal cavity of the extrusion bag 46.

[0045] During operation, when the mounting plate 32 moves on the limit rod 2 as the motor 33 is started, the extrusion plate 42 on the positioning plate 41 will also move by friction on the upper surface of the limit rod 2. Since the bottom surface of the extrusion plate 42 is fixedly connected with the grinding plate 45, and the grinding plate 45 is set in a hexagonal shape, as the extrusion plate 42 slides on the upper surface of the limit rod 2, the grinding plate 45 will rub against the upper surface of the limit rod 2 to grind the limit rod 2, and the edges and corners of the grinding plate 45 will generate a scraping force on the upper surface of the limit rod 2, so as to achieve the effect of the cutting process. The upper surface of the limit rod 2 is constantly cleaned to avoid the accumulation of dust and impurities on the upper surface of the limit rod 2 during long-term use, which causes the first roller 37 and the second roller 38 to vibrate when moving, thereby reducing the cutting accuracy. The limit plate 44 supports both sides of the bottom surface of the extrusion plate 42, which can also avoid the problem that the extrusion plate 42 is irregularly deformed, causing the grinding plate 45 to be unable to completely fit on the upper surface of the limit rod 2 and reducing the cleaning effect. At the same time, the extrusion plate 42 is an elastic plate, so when the extrusion plate 42 moves on the upper surface of the limit rod 2, it will also make the The first expansion plate 412 and the second expansion plate 413 are pushed to move outward synchronously, and then the expansion plate 410 is pushed outward through the plug-in plate 411, that is, the expansion of the expansion plate 410 produces a squeezing effect on the inner surface of the traction belt 31, so that the traction belt 31 is moved in the rotating tube 35. 35 and the first roller 37 are in a tensioned state, so that the traction belt 31 is always kept under a strong elastic force during operation, and the traction belt 31 is prevented from being loosened and slipping, resulting in structural damage, thereby greatly improving the stability of the device during operation. After stopping moving, the extrusion plate 42 is reset under the action of elastic force, so that the mounting plate 32 moves slightly, and the expansion effect on the traction belt 31 is lost, so that the traction belt 31 is only expanded during operation, avoiding being in a stretched state all the time to reduce the service life of the traction belt 31.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by... does not exclude the existence of other identical elements in the process, method, article or device including the element".

Claims

1. A plate frame laser cutting device for solar frame processing, comprising a main frame (1), characterized in that: The main frame (1) is arranged in a rectangular shape, a limiting rod (2) is slidably connected to the main frame (1), and further comprises: A cutting mechanism (3), wherein the cutting mechanism (3) is movably connected to the limiting rod (2), and the cutting mechanism (3) is used for laser cutting the solar frame; An auxiliary mechanism (4), wherein the auxiliary mechanism (4) is fixedly mounted on the cutting mechanism (3), and the auxiliary mechanism (4) is used to cooperate with the cutting mechanism (3) to work; The cutting mechanism (3) comprises a traction belt (31), the traction belt (31) is movably engaged with the upper surface of the limiting rod (2), the traction belt (31) and the upper surface of the limiting rod (2) are in the same horizontal plane, mounting plates (32) are symmetrically arranged on both sides of the traction belt (31), the mounting plates (32) are respectively arranged on both sides of the limiting rod (2), a motor (33) is fixedly installed on the top outer surface of the mounting plate (32) by bolts, and the motor (33) ) is rotatably connected to the output end thereof with a rotating shaft (34), one end of the rotating shaft (34) away from the motor (33) is fixedly connected to a rotating tube (35), the outer surface of one end of the rotating tube (35) away from the rotating shaft (34) is wound around the inner surface of the traction belt (31), and a laser cutter (36) is fixedly mounted on the middle outer surface of the mounting plate (32), the laser cutter (36) is vertically arranged, and the bottom of the laser cutter (36) is arranged below the limiting rod (2).

2. The plate frame laser cutting device for solar frame processing according to claim 1 is characterized in that: The surface of the mounting plate (32) away from the motor (33) is rotatably connected to a first roller (37), two first rollers (37) are symmetrically arranged, and the outer surface of the first roller (37) is embedded and rollingly arranged on the upper surface of the limit rod (2), and the outer surface of the first roller (37) is wound on the outer surface of the traction belt (31).

3. The plate frame laser cutting device for solar frame processing according to claim 2 is characterized in that: The bottom surface of the mounting plate (32) away from the motor (33) is rotatably connected to a second roller (38), the outer surface of the second roller (38) is embedded and rollingly arranged on the lower surface of the limiting rod (2), and the second roller (38) and the rotating tube (35) are in the same vertical plane.

4. The plate frame laser cutting device for solar frame processing according to claim 3 is characterized in that: The auxiliary mechanism (4) comprises a positioning plate (41), wherein the positioning plate (41) is symmetrically fixedly connected to the two side surfaces of the mounting plate (32), and the inner side surface of the positioning plate (41) is fixedly connected to a pressing plate (42), wherein the pressing plate (42) is arranged in a semicircular shape, and the bottom surface of the pressing plate (42) is pressed and fitted to the upper surface of the limiting rod (2).

5. The plate frame laser cutting device for solar frame processing according to claim 4 is characterized in that: The bottom surface thickness of the extrusion plate (42) is thinner than the thickness of the two sides. A central column (43) is provided on the inner side of the extrusion plate (42). Both ends of the central column (43) are respectively fixedly connected to the inner surface of the positioning plate (41).

6. The plate frame laser cutting device for solar frame processing according to claim 5 is characterized in that: The center column (43) is configured as a boss type, and the bottom surface of the center column (43) is symmetrically fixedly connected to a limit plate (44). The limit plates (44) on the same center column (43) are configured as a group, and the limit plates (44) in the same group are configured in an eight-shaped configuration. The end of the limit plate (44) away from the center column (43) is configured in an arc shape.

7. The plate frame laser cutting device for solar frame processing according to claim 6 is characterized by: A grinding plate (45) is fixedly connected to the surface of the extrusion plate (42) that is in contact with one side of the limiting rod (2), and the grinding plate (45) is configured in a hexagonal shape.

8. The plate frame laser cutting device for solar frame processing according to claim 7 is characterized in that: The inner surfaces of both sides of the extrusion plate (42) are fixedly connected with extrusion bags (46), the outer surface of the extrusion bag (46) on one side away from the extrusion plate (42) is fixedly connected to the outer surfaces of both sides of the central column (43), the inner surface of the extrusion bag (46) is fixedly connected with a stabilizing plate (47), the stabilizing plate (47) is arranged in a nearly U-shape, the stabilizing plate (47) is arranged as an elastic plate, and the two sides of the stabilizing plate (47) are arranged in a foldable shape.

9. The plate frame laser cutting device for solar frame processing according to claim 8, characterized in that: An installation groove (48) is provided at one end of the rotating tube (35) away from the motor (33). The installation groove (48) is arranged in an annular shape. A support ring (49) is fixedly connected to the inner surface of the installation groove (48). An expansion plate (410) is arranged on the outer surface of the support ring (49). Six expansion plates (410) are arranged at fixed intervals around the central axis of the support ring (49). The six expansion plates (410) are initially in contact with each other. The inner surfaces of the expansion plates (410) are fixedly connected. A plug-in plate (411) is provided, the inner end of the plug-in plate (411) passes through a support ring (49) and is arranged inside the support ring (49), the inner end of the plug-in plate (411) is fixedly connected to a first expansion plate (412), the two ends of the first expansion plate (412) are elastically and slidably plugged with a second expansion plate (413), the first expansion plate (412) and the second expansion plate (413) are combined into a ring, and the internal cavity of the support ring (49) is connected to the internal cavity of the extrusion bag (46).

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