Laser welding packer with clamping and positioning mechanism

Abstract

The invention discloses a laser welding packer with a clamping and positioning mechanism, and belongs to the technical field of laser welding packagers.The laser welding packer comprises a conveying base and a fixing frame, a conveying roller is rotationally connected to the conveying base, driving motors are fixedly installed on the two sides of the conveying base, a guide rod is connected to the lower portion of the conveying base, and a clamping and positioning mechanism is arranged on the guide rod; a guide sliding groove is formed in the lower portion of the conveying base, and through holes are formed in the two sides of the lower portion of the conveying base. According to the steel stacking device, a double-shaft motor is started to drive two threaded lead screws to rotate, two moving blocks are promoted to move oppositely, at the moment, a hinge rod can rotate, then the moving blocks moving continuously pull a connecting frame through the hinge rod, the connecting frame is promoted to penetrate through a through hole to slide into a guide sliding groove, and then two clamping plates clamp and fix stacked steel; and the stacked steel materials are tightly attached to each other, so that the strapping tape can be uniformly stressed, the packing tightness is improved, and the stacked steel materials are prevented from slipping or collapsing.

Description

Technical Field

[0001] The present invention belongs to the technical field of laser welding balers, and in particular relates to a laser welding baler with a clamping and positioning mechanism. Background Art

[0002] A baler is a piece of mechanical equipment used to bundle and secure items. It is widely used in logistics, warehousing, manufacturing, construction and other industries. It is used to package various types of goods such as cartons, steel pipes, wood, textiles, etc. It can automatically complete operations such as feeding, bundling, cutting, and welding. It is suitable for large-scale production bundling. According to the bundling method, it can be divided into hot-melt balers: the strapping tape is bonded by heating; friction welding balers: the plastic-steel strapping is welded by friction heat; buckle balers: the steel strapping tape is fixed with metal buckles; laser welding balers: used for high-precision metal strapping, without the need for fasteners.

[0003] Currently, laser welding balers are commonly used to fix metal straps by laser welding to complete the packaging of steel pipes, steel plates and other steel materials. However, when using balers to pack steel materials, irregular gaps are inevitable between the multiple layers of steel materials, resulting in loose stacking. This can easily lead to loosening of the strapping due to uneven force during packaging, which in turn causes scattering or stack collapse during subsequent transportation. Summary of the Invention

[0004] In order to overcome the above-mentioned defects, the present invention provides a laser welding baler with a clamping and positioning mechanism, which solves the problem that irregular gaps inevitably appear between multi-layer stacked steel materials, resulting in loose stacking. This makes it easy for the bundles to loosen due to uneven force during packaging, which in turn causes scattering or stack collapse during subsequent transportation.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a laser welding baler with a clamping and positioning mechanism, comprising a conveying seat and a fixed frame, wherein a transport roller is rotatably connected to the conveying seat, drive motors are fixedly installed on both sides of the conveying seat, a guide rod is connected to the lower part of the conveying seat, a guide chute is provided inside the lower part of the conveying seat, through holes are provided on both sides of the lower part of the conveying seat, there are two conveying seats, and a double-axis motor is provided between the two conveying seats, and threaded screws are connected to the output shafts at both ends of the double-axis motor; Two moving blocks are installed on the threaded screw, and the moving block is connected to a guide sleeve, and both ends of the moving block are rotatably connected to a hinged rod through a pin shaft, and one end of the hinged rod is rotatably connected to a connecting frame through a pin shaft, and the connecting frame is connected to a supporting frame, and the connecting frame is connected to a clamping plate, and the clamping plate is connected to an anti-slip pad, and a top plate is connected above the fixed frame, and an I-shaped sleeve is rotatably connected to the top plate; The top plate is rotatably connected to a main synchronous wheel, the top plate is fixedly mounted with a working motor, the I-shaped sleeve is connected to a secondary synchronous wheel, the I-shaped sleeve and the secondary synchronous wheel are commonly connected to a threaded sleeve, the threaded sleeve is threadedly connected to a threaded rod, one end of the threaded rod is connected to a movable plate, laser ranging sensors are mounted on both sides of the movable plate, and a baling machine assembly is provided below the movable plate.

[0006] As a further solution of the present invention: the output shaft of the driving motor is connected to the transport roller, a rubber pad is connected under the conveying seat, and the anti-slip pad and the rubber pad are both made of silicone rubber.

[0007] As a further solution of the present invention: fixed seats are connected to both sides of the fixing frame, support rollers are rotatably mounted on the fixing seats, and the fixing frame is arranged between the two conveying seats.

[0008] As a further solution of the present invention: four fixed rods are connected above the movable plate in a rectangular array, four sliding rods are slidably connected to the movable plate in a rectangular array, and the two sliding rods on the same side of the movable plate are commonly connected to a mounting frame, and a pressure roller is rotatably installed on the mounting frame.

[0009] As a further solution of the present invention: the fixed rod is slidably connected to the top plate, a connecting spring is sleeved on the sliding rod, one end of the connecting spring is connected to the top of the sliding rod, and the other end of the connecting spring is connected to the top of the movable plate.

[0010] As a further solution of the present invention: the output shaft of the working motor is connected to the main synchronous wheel, the main synchronous wheel and the auxiliary synchronous wheel are jointly installed with a toothed synchronous belt, and the threaded rod passes through the I-shaped sleeve and the auxiliary synchronous wheel.

[0011] As a further solution of the present invention: the threaded screw is rotatably connected in the conveying seat, and threads in opposite directions are provided at both ends of the threaded screw. The threaded screw cooperates with the guide sleeve thread, and the moving block slides in the guide groove, and the top and bottom of the moving block are in contact with the wall of the guide groove.

[0012] As a further solution of the present invention: the through hole and the guide slot are interconnected, the connecting frame slides together in the guide slot and the through hole, and the supporting frame is slidably connected to the guide rod.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a double-axis motor, a threaded screw, a moving block, a guide sleeve, a hinged rod, a guide slot, a through hole, a connecting frame, a support frame, a guide rod and a clamping plate, and a staff starts the double-axis motor to synchronously drive the two threaded screws to rotate in the conveying seat. As the threaded screw rotates, the moving block will move along the threaded screw through the guide sleeve and the threaded screw, and the threads at the two ends of the threaded screw make the two moving blocks move in opposite directions. At this time, the hinged rod will rotate, thereby causing the continuously moving moving block to pull the connecting frame through the hinged rod, prompting the connecting frame to pass through the through hole and slide into the guide slot, and the support frame will slide on the guide rod, so that the movement of the connecting frame is more stable, and the moving connecting frame will drive the clamping plate, prompting the two clamping plates to clamp and fix the stacked steel materials, so that the stacked steel materials are tightly attached to each other, so that the strapping belt can be evenly stressed, thereby improving the fastness of the packaging and preventing the stacked steel materials from slipping or collapsing. 2. In the present invention, a working motor, a main synchronous wheel, a secondary synchronous wheel, an I-shaped sleeve, a threaded sleeve, a threaded rod, a movable plate, a sliding rod, a fixed rod, a pressure roller, a connecting spring and a laser ranging sensor are set. When the working motor is started, the staff causes the working motor to drive the main synchronous wheel to rotate, and then utilizes the cooperation between the main synchronous wheel, the secondary synchronous wheel and the toothed synchronous belt to drive the I-shaped sleeve to rotate on the top plate, and the threaded sleeve rotating with the I-shaped sleeve causes the threaded rod to move up and down, thereby pushing the movable plate downward, causing the pressure roller and the laser ranging sensor to move downward together. At this time, the laser ranging sensor will monitor the stacked steel and determine the moving distance of the stacked steel, thereby facilitating the positioning of the bundling position. At the same time, the pressure roller in contact with the stacked steel will push the sliding rod through the mounting frame, causing the sliding rod to slide on the movable plate and stretch the connecting spring, so that the pressure roller cooperates with the supporting roller to press and fix the stacked steel, further preventing the steel from sliding loose and improving the stability of the bundling. 3. In the present invention, by setting a fixed seat, a support roller, a drive motor and a transport roller, when bundling, the staff can start multiple drive motors to drive multiple transport rollers to roll respectively, so that the stacked steel can be moved on the conveying seat by using the transport rollers. As the stacked steel continues to move, the steel will move to the support roller, so that the support roller can support the stacked steel, and the rolling of the support roller can assist the movement of the stacked steel, thereby reducing the suspended distance of the stacked steel and improving the stability of the movement of the stacked steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 Schematic diagram of the cross-sectional structure of the conveying seat of the present invention; Figure 3Schematic diagram of the cross-sectional structure of the top plate and the movable plate of the present invention; Figure 4 A schematic diagram of the three-dimensional structure of the clamping plate of the present invention; Figure 5 A schematic diagram of the three-dimensional structure of the connecting frame of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the movable plate of the present invention; In the figure: 1. Conveying seat; 2. Fixed frame; 3. Transport roller; 4. Driving motor; 5. Guide rod; 6. Guide slide; 7. Through hole; 8. Dual-axis motor; 9. Threaded screw; 10. Moving block; 11. Guide sleeve; 12. Articulated rod; 13. Connecting frame; 14. Support frame; 15. Clamping plate; 16. Anti-slip pad; 17. Top plate; 18. I-shaped sleeve; 19. Main synchronous wheel; 20. Working motor; 21. Auxiliary synchronous wheel; 22. Threaded sleeve; 23. Threaded rod; 24. Movable plate; 25. Laser ranging sensor; 26. Packing machine assembly; 27. Rubber pad; 28. Fixed seat; 29. ​​Support roller; 30. Fixed rod; 31. Sliding rod; 32. Mounting frame; 33. Pressure roller; 34. Toothed synchronous belt; 35. Connecting spring. DETAILED DESCRIPTION

[0015] The technical solution of the present application will be further described in detail below in conjunction with specific implementation methods.

[0016] like Figure 1-6 As shown, the present invention provides a technical solution: a laser welding baler with a clamping and positioning mechanism, comprising a conveying seat 1 and a fixed frame 2, a conveying roller 3 is rotatably connected to the conveying seat 1, a driving motor 4 is fixedly installed on both sides of the conveying seat 1, the output shaft of the driving motor 4 is connected to the conveying roller 3, and a rubber pad 27 is connected under the conveying seat 1, the anti-slip pad 16 and the rubber pad 27 are both made of silicone rubber, and the conveying roller 3 is driven to rotate by the driving motor 4, thereby utilizing the rolling of the conveying roller 3 to drive the stacked steel to move, and the rubber pad 27 under the conveying seat 1 can increase the friction between the conveying seat 1 and the ground, and fit in contact through the deformation of the rubber pad 27, thereby improving the placement and working stability of the conveying seat 1, and when the clamping plate 15 contacts the steel, the anti-slip pad 16 will be squeezed, and then fit in contact with the steel, thereby improving the stability of the clamping.

[0017] A guide rod 5 is connected to the bottom of the conveying seat 1, and a guide slide groove 6 is opened inside the bottom of the conveying seat 1. Through holes 7 are opened on both sides of the bottom of the conveying seat 1. The through holes 7 and the guide slide grooves 6 are interconnected, and the connecting frame 13 slides together in the guide slide grooves 6 and the through holes 7. The support frame 14 is slidably connected to the guide rod 5. Through the sliding connection between the support frame 14 and the guide rod 5, when the moving block 10 pulls the connecting frame 13 to move through the hinged rod 12, the support frame 14 can slide on the guide rod 5, and then the guide rod 5 can guide and support the movement of the connecting frame 13, so that the connecting frame 13 can move smoothly, and the through holes 7 can limit the connecting frame 13 during movement, thereby preventing the connecting frame 13 from tilting during movement.

[0018] The two ends of the screw rod 9 are provided with threads in opposite directions, and the screw rod 9 and the guide sleeve 11 are threadedly matched, and the moving block 10 slides in the guide slot 6, and the upper and lower parts of the moving block 10 are in contact with the groove wall of the guide slot 6. Through the threads in opposite directions at both ends of the screw rod 9 and the threaded match of the guide sleeve 11 and the screw rod 9, the two moving blocks 10 can move in opposite directions along the screw rod 9 in the guide slot 6, and the contact between the moving block 10 and the groove wall of the guide slot 6 enables the guide slot 6 to limit the moving block 10 and prevent the moving block 10 from rotating crookedly on the screw rod 9, so that the moving block 10 can move smoothly.

[0019] The two ends of the moving block 10 are rotatably connected to the hinged rod 12 through a pin shaft, and one end of the hinged rod 12 is rotatably connected to the connecting frame 13 through a pin shaft, and the connecting frame 13 is connected to a support frame 14, and the connecting frame 13 is connected to a clamping plate 15, and the clamping plate 15 is connected to an anti-slip pad 16. A top plate 17 is connected to the top of the fixed frame 2, and fixed seats 28 are connected on both sides of the fixed frame 2. A supporting roller 29 is rotatably installed on the fixed seat 28, and the fixed frame 2 is arranged between the two conveying seats 1. By arranging the supporting roller 29 between the two conveying seats 1, and the height of the supporting roller 29 is consistent with the height of the transport roller 3, the stacked steel driven by the transport roller 3 can be moved onto the supporting roller 29, and then the supporting roller 29 supports the stacked steel, avoiding the stacked steel from being suspended in the air for a long time, so that the steel can be moved and transported smoothly.

[0020] The top plate 17 is rotatably connected to an I-shaped sleeve 18, and the top plate 17 is rotatably connected to a main synchronous wheel 19. A working motor 20 is fixedly installed on the top plate 17, and the I-shaped sleeve 18 is connected to a secondary synchronous wheel 21. The I-shaped sleeve 18 and the secondary synchronous wheel 21 are commonly connected to a threaded sleeve 22, and a threaded rod 23 is threadedly connected to the threaded sleeve 22. The output shaft of the working motor 20 is connected to the main synchronous wheel 19, and a toothed synchronous belt 34 is commonly installed on the main synchronous wheel 19 and the secondary synchronous wheel 21. The threaded rod 23 passes through the I-shaped sleeve 18 and the secondary synchronous wheel 21. Through the mutual cooperation between the main synchronous wheel 19, the secondary synchronous wheel 21 and the toothed synchronous belt 34, the working motor 20 can drive the I-shaped sleeve 18 and the threaded sleeve 22 to rotate together, and then the threaded rod 23 threadedly connected to the threaded sleeve 22 can pass through the top plate 17 to move up and down, thereby pushing or pulling the top plate 17 to move up and down, so that the pressure roller 33 can contact the steel for compaction and positioning.

[0021] One end of the threaded rod 23 is connected to a movable plate 24, and laser ranging sensors 25 are installed on both sides of the movable plate 24. A baler assembly 26 is provided below the movable plate 24. Four fixed rods 30 are connected above the movable plate 24 in a rectangular array, and four sliding rods 31 are slidably connected to the movable plate 24 in a rectangular array, and the two sliding rods 31 on the same side of the movable plate 24 are commonly connected to a mounting frame 32, and a pressure roller 33 is rotatably installed on the mounting frame 32. When the threaded rod 23 pushes the movable plate 24 downward, the fixed rod 30 will slide on the top plate 17, thereby guiding and restricting the movement of the movable plate 24, so that the movable plate 24 can be lifted and lowered smoothly. When the stacked steel passes through the fixed frame 2, the laser ranging sensors 25 on both sides of the movable plate 24 can monitor the moving distance of the steel, thereby locating the bundling position of the steel.

[0022] The fixed rod 30 is slidably connected to the top plate 17, and a connecting spring 35 is sleeved on the sliding rod 31. One end of the connecting spring 35 is connected to the top of the sliding rod 31, and the other end of the connecting spring 35 is connected to the top of the movable plate 24. As the movable plate 24 continues to move downward, the pressure roller 33 will contact the stacked steel, and then the pressure roller 33 will be forced to push the sliding rod 31 through the mounting bracket 32, causing the sliding rod 31 to slide on the movable plate 24 and stretch the connecting spring 35. The connecting spring 35 can buffer the contact, and the rebound force of the connecting spring 35 allows the pressure roller 33 to press down the steel. The sliding of the sliding rod 31 and the deformation of the connecting spring 35 can also increase the downward stroke of the movable plate 24 when the pressure roller 33 contacts the steel.

[0023] The working principle of the present invention is: The staff can start multiple driving motors 4 to respectively drive multiple transport rollers 3 to roll, so that the stacked steel can be moved on the transport rollers 3 on the conveying seat 1. When the stacked steel moves to the supporting rollers 29, the staff starts the dual-axis motor 8, which causes the dual-axis motor 8 to synchronously drive the two threaded screws 9 to rotate in the conveying seat 1, so that the moving block 10 moves along the threaded screw 9 through the threaded cooperation of the guide sleeve 11 and the threaded screw 9, and the threads at both ends of the threaded screw 9 are in opposite directions. The two moving blocks 10 are then able to move in opposite directions, and at this time the hinge rod 12 will rotate, thereby causing the continuously moving moving block 10 to pull the connecting frame 13 through the hinge rod 12, prompting the connecting frame 13 to pass through the through hole 7 and slide into the guide slot 6, and at the same time the support frame 14 will slide on the guide rod 5, thereby making the movement of the connecting frame 13 more stable, and the moving connecting frame 13 will drive the clamping plates 15, prompting the two clamping plates 15 to clamp and fix the stacked steel materials, so that the stacked steel materials are tightly attached to each other; The strapping belt is evenly stressed, thereby improving the tightness of the packaging. At the same time, the working motor 20 is started to drive the main synchronous wheel 19 to rotate. The cooperation between the main synchronous wheel 19, the auxiliary synchronous wheel 21 and the toothed synchronous belt 34 enables the I-shaped sleeve 18 to rotate on the top plate 17. The threaded sleeve 22 rotating with the I-shaped sleeve 18 drives the threaded rod 23 to move up and down, thereby pushing the movable plate 24 downward, prompting the pressure roller 33 and the laser ranging sensor 25 to move downward together. At this time, the laser distance sensor 25 will monitor the stacked steel materials and determine the moving distance of the stacked steel materials, thereby facilitating the positioning of the bundling position. At the same time, the pressure roller 33 in contact with the stacked steel materials will push the sliding rod 31 through the mounting frame 32, causing the sliding rod 31 to slide on the movable plate 24 and stretch the connecting spring 35, so that the pressure roller 33 cooperates with the supporting roller 29 to press and fix the stacked steel materials, further preventing the steel materials from sliding loose and improving the stability of the bundling. By rolling together the transport roller 3 and the support roller 29, the stacked steel can be moved from one transport seat 1 to another transport seat 1, thereby completing the transportation and movement of the stacked steel. The support roller 29 can support the stacked steel when it passes through the fixed frame 2, and use the support roller 29's own rolling to assist the movement of the stacked steel, thereby reducing the suspended distance of the stacked steel and improving the stability of the stacked steel movement.

[0024] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying 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 operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0026] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0027] In the present invention, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the descriptions with reference to the terms "one scheme", "some schemes", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the scheme or example are included in at least one scheme or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same scheme or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more schemes or examples.

Claims

1. A laser welding baler with a clamping and positioning mechanism, comprising a conveying seat (1) and a fixing frame (2), characterized in that: The conveying seat (1) is rotatably connected to a transport roller (3), drive motors (4) are fixedly installed on both sides of the conveying seat (1), a guide rod (5) is connected to the bottom of the conveying seat (1), a guide chute (6) is provided inside the bottom of the conveying seat (1), through holes (7) are provided on both sides of the bottom of the conveying seat (1), there are two conveying seats (1), and a double-axis motor (8) is provided between the two conveying seats (1), and threaded screws (9) are connected to the output shafts at both ends of the double-axis motor (8); Two moving blocks (10) are mounted on the threaded screw (9), the moving blocks (10) are connected to guide sleeves (11), both ends of the moving blocks (10) are rotatably connected to hinged rods (12) via pins, one end of the hinged rod (12) is rotatably connected to a connecting frame (13) via a pin, the connecting frame (13) is connected to a support frame (14), the connecting frame (13) is connected to a clamping plate (15), the clamping plate (15) is connected to an anti-slip pad (16), a top plate (17) is connected above the fixed frame (2), and a shaped sleeve (18) is rotatably connected to the top plate (17); A main synchronous wheel (19) is rotatably connected to the top plate (17), a working motor (20) is fixedly mounted on the top plate (17), a secondary synchronous wheel (21) is connected to the work-shaped sleeve (18), a threaded sleeve (22) is commonly connected to the work-shaped sleeve (18) and the secondary synchronous wheel (21), a threaded rod (23) is threadedly connected to the threaded sleeve (22), one end of the threaded rod (23) is connected to a movable plate (24), laser distance sensors (25) are mounted on both sides of the movable plate (24), and a baler assembly (26) is arranged below the movable plate (24).

2. The laser welding baler with a clamping and positioning mechanism according to claim 1, characterized in that: The output shaft of the driving motor (4) is connected to the transport roller (3), and a rubber pad (27) is connected below the transport seat (1). Both the anti-slip pad (16) and the rubber pad (27) are made of silicone rubber.

3. The laser welding baler with a clamping and positioning mechanism according to claim 1, characterized in that: The fixing frame (2) is connected to fixing seats (28) on both sides, and a supporting roller (29) is rotatably mounted on the fixing seat (28). The fixing frame (2) is arranged between the two conveying seats (1).

4. The laser welding baler with a clamping and positioning mechanism according to claim 1, characterized in that: Four fixed rods (30) are connected to the movable plate (24) in a rectangular array, four sliding rods (31) are slidably connected to the movable plate (24) in a rectangular array, and two sliding rods (31) on the same side of the movable plate (24) are commonly connected to a mounting frame (32), and a pressure roller (33) is rotatably mounted on the mounting frame (32).

5. The laser welding baler with a clamping and positioning mechanism according to claim 4, characterized in that: The fixed rod (30) is slidably connected to the top plate (17), and a connecting spring (35) is sleeved on the sliding rod (31). One end of the connecting spring (35) is connected to the top of the sliding rod (31), and the other end of the connecting spring (35) is connected to the top of the movable plate (24).

6. The laser welding baler with a clamping and positioning mechanism according to claim 1, characterized in that: The output shaft of the working motor (20) is connected to the main synchronous wheel (19), and a toothed synchronous belt (34) is installed on the main synchronous wheel (19) and the auxiliary synchronous wheel (21). The threaded rod (23) passes through the shaped sleeve (18) and the auxiliary synchronous wheel (21).

7. The laser welding baler with a clamping and positioning mechanism according to claim 1, characterized in that: The threaded screw (9) is rotatably connected in the conveying seat (1), and threads in opposite directions are provided at both ends of the threaded screw (9). The threaded screw (9) is threadably matched with the guide sleeve (11), and the moving block (10) slides in the guide chute (6), and the upper and lower parts of the moving block (10) are in contact with the groove wall of the guide chute (6).

8. The laser welding baler with a clamping and positioning mechanism according to claim 1, characterized in that: The through hole (7) and the guide slide groove (6) are interconnected, the connecting frame (13) slides together in the guide slide groove (6) and the through hole (7), and the supporting frame (14) is slidably connected to the guide rod (5).

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