A multi-directional disinfection mechanism for packaging bags

Abstract

The present invention provides a multi-directional disinfection mechanism for packaging bags, relating to the field of packaging bags. The multi-directional disinfection mechanism for packaging bags comprises a base plate, one end of which is fixedly connected to a fixed bracket, the end of which, remote from the base plate, is fixedly connected to a conveyor belt, the end of which, remote from the conveyor belt, is fixedly connected to a fifth hydraulic rod. One side of the base plate is fixedly connected to a side plate, the upper end of which is fixedly connected to a transfer mechanism, and the lower end of which is fixedly connected to a bag opening mechanism. By using the bag opening mechanism and the transfer mechanism, the packaging bag is first erected and then opened by the bag opening mechanism. Subsequently, a spray rod is used to simultaneously clean and disinfect the inside and outside of the packaging bag, greatly improving production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging bags, in particular to a multi-directional disinfection mechanism for packaging bags. Background Art

[0002] Packaging bags are bag-shaped containers used to package, protect, and transport items. They can be made of a variety of materials, such as plastic, paper, and cloth. They are widely used in various industries, including the food industry, retail, and logistics. To protect the contents from contamination, packaging bags must be cleaned and disinfected.

[0003] The Chinese invention patent with publication number CN113212888A discloses a disinfection device for packaging bags, in which, when the reel is reeling, the disinfection tube on one lifting block disinfects the passing packaging bag, and the other lifting block is away from the packaging bag and on standby. When the disinfection tube on the lifting block being disinfected needs to be replaced, the other lifting block is first driven by the switching mechanism to make the disinfection tube on the other lifting block reach the disinfection position, and then the lifting block corresponding to the disinfection tube that needs to be replaced is driven away from the disinfection position by the switching mechanism. In this way, when the disinfection tube on a lifting block needs to be replaced, the packaging bag can be disinfected uninterruptedly, thereby improving the disinfection efficiency. After the lifting block that needs to be replaced is away from the disinfection position, the staff removes the lifting block and replaces the disinfection tube, and then installs the lifting block on the corresponding second slide slot, so that it is still away from the disinfection position and on standby, which solves the disadvantage of having to stop the machine when replacing the disinfection tube. However, the existing packaging bag disinfection mechanism often requires multiple workstations for disinfection, resulting in a long disinfection time and reduced production efficiency. Summary of the Invention

[0004] (1) Technical problems solved

[0005] In view of the shortcomings of the existing technology, the present invention provides a multi-directional disinfection mechanism for packaging bags, which solves the problem that the existing packaging bag disinfection machine needs to go through multiple stations to disinfect different parts, resulting in long disinfection operation time and low production efficiency.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a multi-directional disinfection mechanism for packaging bags, comprising a bottom plate, one end of the bottom plate is fixedly connected to a fixed bracket, the end of the fixed bracket away from the bottom plate is fixedly connected to a conveyor belt, the end of the bottom plate away from the conveyor belt is fixedly connected to a fifth hydraulic rod; one side of the bottom plate is fixedly connected to a side plate, the upper end of the side plate is fixedly connected to a transfer mechanism, and the lower end of the side plate is fixedly connected to a bag opening mechanism;

[0008] The output end of the fifth hydraulic rod is fixedly connected to a side spray rod, one end of the side spray rod is fixedly connected to a connecting pipe, the end of the connecting pipe away from the side spray rod is fixedly connected to the other side spray rod, the end of the side spray rod away from the connecting pipe is fixedly connected to a fixing frame, a plurality of second nozzles are fixedly connected to the side spray rod, the lower surface of the fixing frame is fixedly connected to a connecting bracket, the end of the connecting bracket away from the fixing frame is fixedly connected to the middle spray rod, both sides of the middle spray rod are fixedly connected to the first nozzles, a hose is fixedly connected to the fixing frame, the end of the hose away from the fixing frame is fixedly connected to a water pump, and the end of the water pump away from the hose is fixedly connected to a water bucket.

[0009] Through the above technical solution, the packaging bags can be disinfected in all directions and comprehensively, which greatly improves the disinfection efficiency.

[0010] Preferably, an inner tube is fixedly connected to the water bucket, one end of the inner tube is fixedly connected to the water pump, the end of the inner tube away from the water pump is fixedly connected to a counterweight, and one side of the conveyor belt is fixedly connected to a motor.

[0011] The above technical solution can prevent the inner tube from floating on the upper layer of the liquid in the bucket, causing the water pump to be unable to suck out the disinfectant.

[0012] Preferably, the bag opening mechanism includes a fixed plate, one side of the side plate is fixedly connected to the fixed plate, a first hydraulic rod is fixedly connected through the fixed plate, the output end of the first hydraulic rod is fixedly connected to the mounting plate, a guide rod is fixedly connected through the side plate, the guide rod passes through the slidingly connected mounting plate, and the mounting plate passes through the slidingly connected side plate.

[0013] Through the above technical solution, the installation plate can be moved up and down, making it easier to adapt the packaging bag.

[0014] Preferably, a mounting block is fixedly connected to the upper surface of the mounting plate, a pair of first fixed blocks are fixedly connected to both sides of the upper surface of the mounting plate, a pair of second fixed blocks are fixedly connected to both sides of the upper surface of the mounting plate, one side of the mounting block is fixedly connected to a second hydraulic rod, the output end of the second hydraulic rod is fixedly connected to a first clamping plate, and gears are rotatably connected to both sides of the upper surface of the mounting plate.

[0015] With the above technical solution, only one hydraulic rod is needed to drive the opening and closing of the first clamping plate and the second clamping plate, thereby facilitating the opening of the packaging bag.

[0016] Preferably, both ends of the first splint are fixedly connected to the first sliding rod, the first sliding rod passes through and is slidably connected to the first fixed block, the first sliding rod is fixedly connected to the first rack, both ends of the first splint pass through and are slidably connected to the second sliding rod, the end of the second sliding rod close to the first splint is fixedly connected to the second splint, the end of the second sliding rod away from the second splint passes through and is slidably connected to the second fixed block, the second sliding rod is fixedly connected to the second rack, the second rack and the first rack are both meshed with the gear, and a number of pneumatic suction cups are fixedly connected between the first splint and the second splint.

[0017] Through the above technical solution, the two sides of the packaging bag can be sucked by the pneumatic suction cup, so that the packaging bag can be opened, making it convenient for the disinfection spray rod to enter the packaging bag.

[0018] Preferably, the transfer mechanism includes a connecting plate, one side of the side plate is fixedly connected to the connecting plate, the upper end of the side plate is provided with a sliding groove, one side of the connecting plate is rotatably connected to a third hydraulic rod, the end of the third hydraulic rod away from the connecting plate is rotatably connected to a rotating plate, the end of the rotating plate away from the third hydraulic rod is rotatably connected to the side plate, and a guard plate is fixedly connected to the side plate.

[0019] Through the above technical solution, the rotating plate can be rotated to drive the fixed shaft to rotate, so that the upper and lower clamping plates arranged horizontally are converted to vertical positions, and the packaging bag is erected.

[0020] Preferably, the end of the rotating plate close to the third hydraulic rod is rotatably connected to a fixed shaft, the end of the fixed shaft close to the rotating plate is fixedly connected to a connecting rod, the end of the connecting rod away from the fixed shaft is fixedly connected to a rotating shaft, and a roller is rotatably connected to the rotating shaft, and the roller and the slide groove slide in cooperation with each other.

[0021] Through the above technical solution, the connecting rod can drive the fixed shaft to rotate under the restriction of the roller and the sliding groove, thereby driving the connecting rod to rotate.

[0022] Preferably, the end of the fixed shaft away from the connecting rod is fixedly connected to the connecting rod, the end of the connecting rod away from the fixed shaft is rotatably connected to the rotating rod, the end of the connecting rod away from the fixed shaft is fixedly connected to the upper splint, the end of the rotating rod close to the upper splint is fixedly connected to the lower splint, the end of the rotating rod away from the lower splint is rotatably connected to the fourth hydraulic rod, and the end of the fourth hydraulic rod away from the rotating rod is rotatably connected to the connecting rod.

[0023] Through the above technical solution, the fourth hydraulic rod can drive the rotating rod to rotate, thereby controlling the lower clamping plate and the upper clamping plate to cooperate to clamp and fix the packaging bag.

[0024] (3) Beneficial effects

[0025] The present invention provides a multi-directional disinfection mechanism for packaging bags, which has the following beneficial effects:

[0026] 1. The present invention installs side plates and fixed brackets on the bottom plate, and installs a transfer mechanism on the side plates. When the conveyor belt transports the packaging bag to the transfer mechanism, the fourth hydraulic rod can be used to drive the rotating rod to move, and the rotating rod drives the lower clamping plate and the upper clamping plate to clamp the packaging bag. The third hydraulic rod can push the rotating plate to rotate, driving the connecting rod to rotate, so that the packaging bag falls vertically to facilitate the subsequent operation of the bag opening mechanism.

[0027] 2. The present invention uses a bag opening mechanism. After the first hydraulic rod drives the first clamping plate and the second clamping plate to approach each other, the pneumatic suction cup sucks the two sides of the bag, and then the first hydraulic rod drives the first clamping plate and the second clamping plate to separate. Then, under the drive of the fifth hydraulic rod, the side spray rod is raised and lowered along the outer surface of the packaging bag, thereby driving the middle spray rod to raise and lower the inside of the packaging bag. The disinfectant water in the bucket is driven by a water pump and injected into the side spray rod and the middle spray rod through a hose, and then sprayed out through the nozzle, thereby facilitating the simultaneous cleaning of the inside and outside of the packaging bag, greatly saving disinfection time. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the present invention;

[0029] Figure 2 for Figure 1 A magnified view of point A;

[0030] Figure 3 This is a diagram showing the internal structure of the water tank of the present invention;

[0031] Figure 4 It is a partial enlarged view of the transfer mechanism of the present invention;

[0032] Figure 5 It is a three-dimensional structural diagram of the present invention;

[0033] Figure 6 It is the structural diagram of the bag opening mechanism of the present invention.

[0034] Among them, 1. bottom plate; 2. fixed bracket; 3. conveyor belt; 4. side plate; 5. bag opening mechanism; 51. fixed plate; 52. first hydraulic rod; 53. mounting plate; 54. guide rod; 55. mounting block; 56. second hydraulic rod; 57. first clamping plate; 58. first slide bar; 59. first fixed block; 510. first rack; 511. second fixed block; 512. second slide bar; 513. second clamping plate; 514. second rack; 515. gear; 516. pneumatic suction cup; 6. transfer mechanism; 61. connecting plate; 62. third Hydraulic rod; 63, slide; 64, roller; 65, rotating shaft; 66, connecting rod; 67, fixed shaft; 68, rotating plate; 69, connecting rod; 610, guard plate; 611, upper clamping plate; 612, rotating rod; 613, fourth hydraulic rod; 614, lower clamping plate; 7, fifth hydraulic rod; 8, side spray rod; 9, connecting pipe; 10, fixing frame; 11, middle spray rod; 12, first nozzle; 13, second nozzle; 14, hose; 15, water pump; 16, bucket; 17, connecting bracket; 18, inner tube; 19, counterweight; 20, motor. DETAILED DESCRIPTION

[0035] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Example 1:

[0037] like Figure 1 and Figure 3 The embodiment of the present invention provides a multi-directional disinfection mechanism for packaging bags, comprising a bottom plate 1, one end of the bottom plate 1 is fixedly connected to a fixed bracket 2, the end of the fixed bracket 2 away from the bottom plate 1 is fixedly connected to a conveyor belt 3, the end of the bottom plate 1 away from the conveyor belt 3 is fixedly connected to a fifth hydraulic rod 7; one side of the bottom plate 1 is fixedly connected to a side plate 4, the upper end of the side plate 4 is fixedly connected to a transfer mechanism 6, and the lower end of the side plate 4 is fixedly connected to a bag opening mechanism 5;

[0038] The output end of the fifth hydraulic rod 7 is fixedly connected to the side spray rod 8, one end of the side spray rod 8 is fixedly connected to the connecting pipe 9, the end of the connecting pipe 9 away from the side spray rod 8 is fixedly connected to the other side spray rod 8, the end of the side spray rod 8 away from the connecting pipe 9 is fixedly connected to the fixing frame 10, a plurality of second spray heads 13 are fixedly connected to the side spray rod 8, the lower surface of the fixing frame 10 is fixedly connected to the connecting bracket 17, the end of the connecting bracket 17 away from the fixing frame 10 is fixedly connected to the intermediate spray rod 11, both sides of the intermediate spray rod 11 are fixedly connected to the first spray heads 12, a hose 14 is fixedly connected to the fixing frame 10, the end of the hose 14 away from the fixing frame 10 is fixedly connected to the water pump 15, and the end of the water pump 15 away from the hose 14 is fixedly connected to the water bucket 16.

[0039] The inner tube 18 is fixedly connected to the water bucket 16, one end of the inner tube 18 is fixedly connected to the water pump 15, the end of the inner tube 18 away from the water pump 15 is fixedly connected to the counterweight 19, and one side of the conveyor belt 3 is fixedly connected to the motor 20.

[0040] like Figure 1 、 Figure 2 and Figure 4 As shown, the transfer mechanism 6 includes a connecting plate 61, one side of the side plate 4 is fixedly connected to the connecting plate 61, the upper end of the side plate 4 is provided with a slide groove 63, one side of the connecting plate 61 is rotatably connected to the third hydraulic rod 62, the end of the third hydraulic rod 62 away from the connecting plate 61 is rotatably connected to the rotating plate 68, the end of the rotating plate 68 away from the third hydraulic rod 62 is rotatably connected to the side plate 4, and a guard plate 610 is fixedly connected to the side plate 4.

[0041] The end of the rotating plate 68 close to the third hydraulic rod 62 is rotatably connected to a fixed shaft 67, the end of the fixed shaft 67 close to the rotating plate 68 is fixedly connected to a connecting rod 66, the end of the connecting rod 66 away from the fixed shaft 67 is fixedly connected to a rotating shaft 65, and the rotating shaft 65 is rotatably connected to a roller 64, and the roller 64 and the slide groove 63 slide in cooperation with each other.

[0042] One end of the fixed shaft 67 away from the connecting rod 66 is fixedly connected to the connecting rod 69, and the end of the connecting rod 69 away from the fixed shaft 67 is rotatably connected to the rotating rod 612. The end of the connecting rod 69 away from the fixed shaft 67 is fixedly connected to the upper clamping plate 611, and the end of the rotating rod 612 close to the upper clamping plate 611 is fixedly connected to the lower clamping plate 614. The end of the rotating rod 612 away from the lower clamping plate 614 is rotatably connected to the fourth hydraulic rod 613, and the end of the fourth hydraulic rod 613 away from the rotating rod 612 is rotatably connected to the connecting rod 69.

[0043] like Figure 5 and Figure 6 As shown, the bag opening mechanism 5 includes a fixed plate 51, one side of the side plate 4 is fixedly connected to the fixed plate 51, a first hydraulic rod 52 is fixedly connected through the fixed plate 51, the output end of the first hydraulic rod 52 is fixedly connected to the mounting plate 53, a guide rod 54 is fixedly connected inside the side plate 4, the guide rod 54 passes through the slidingly connected mounting plate 53, and the mounting plate 53 passes through the slidingly connected side plate 4.

[0044] A mounting block 55 is fixedly connected to the upper surface of the mounting plate 53, a pair of first fixing blocks 59 are fixedly connected to both sides of the upper surface of the mounting plate 53, a pair of second fixing blocks 511 are fixedly connected to both sides of the upper surface of the mounting plate 53, a second hydraulic rod 56 is fixedly connected to one side of the mounting block 55, an output end of the second hydraulic rod 56 is fixedly connected to the first clamping plate 57, and gears 515 are rotatably connected to both sides of the upper surface of the mounting plate 53.

[0045] Both ends of the first splint 57 are fixedly connected to the first sliding rod 58, the first sliding rod 58 is slidably connected to the first fixed block 59, the first sliding rod 58 is fixedly connected to the first rack 510, both ends of the first splint 57 are slidably connected to the second sliding rod 512, the end of the second sliding rod 512 close to the first splint 57 is fixedly connected to the second splint 513, the end of the second sliding rod 512 away from the second splint 513 is slidably connected to the second fixed block 511, the second sliding rod 512 is fixedly connected to the second rack 514, the second rack 514 and the first rack 510 are meshed with each other, and a number of pneumatic suction cups 516 are fixedly connected between the first splint 57 and the second splint 513.

[0046] Working principle: The conveyor belt 3 is driven to rotate by the motor 20, so that the packaging bag moves to the transfer mechanism 6, and the rotating rod 612 is driven to rotate by the fourth hydraulic rod 613, so that the lower clamping plate 614 is close to the upper clamping plate 611 to clamp the packaging bag, and then the rotating plate 68 is driven to rotate by the third hydraulic rod 62. At this time, due to the restriction of the slide 63, the connecting rod 66 drives the fixed shaft 67 to rotate, so that the connecting rod 69 moves to a horizontal state, and the packaging bag is erected with the opening facing downward. Then the first hydraulic rod 52 drives the mounting plate 53 to rise, so that the pneumatic suction cup 516 sucks both sides of the packaging bag, and then the first clamping plate 57 is driven to expand outward by the second hydraulic rod 56. The movement of the first clamping plate 57 drives the first slide bar 58 to move, and the first slide bar 58 moves. The rod 58 drives the gear 515 to rotate through the first rack 510, and the gear 515 drives the second rack 514 to move. The second rack 514 drives the second clamping plate 513 away from the first clamping plate 57 through the second slide bar 512 to open the packaging bag. Then, the side spray rod 08 is driven to rise through the fifth hydraulic rod 07, and the side spray rod 08 drives the middle spray rod 11 to rise through the fixing frame 10 and the connecting bracket 17. At the same time, the water pump 15 pumps the disinfectant in the bucket 16 into the hose 14, and then sprays it out from the second nozzle 13 and the first nozzle 12 to disinfect the inside and outside of the packaging bag at the same time. At this time, the counterweight 19 ensures that the bottom end of the inner tube 18 is at the bottom wall of the bucket 16 to prevent the inner tube 18 from floating and unable to absorb the disinfectant.

[0047] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention; in addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0048] In the description of the present invention, it should be noted that: unless otherwise clearly stipulated and limited, the terms "installation", "connection", "setting" and "formation" should be understood in a broad sense; for example, it can be a fixed connection, setting, or a detachable connection, setting, or an integrated structure; 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 internal communication between two elements; for those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In the description of the present invention, reference to terms such as "embodiment", "specific example" or "practical application" means that the specific features, structures, materials or characteristics described in combination with the embodiment are included in at least one embodiment or example of the present invention; the schematic expressions of the above terms do not necessarily refer to the same embodiment or example, and the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0050] The above embodiments are only used to illustrate the technical solutions of the present invention. Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation fall within the scope of protection of the present invention.

Claims

1. A multi-directional disinfection mechanism for packaging bags, comprising a bottom plate (1), characterized in that: One end of the bottom plate (1) is fixedly connected to a fixed bracket (2), an end of the fixed bracket (2) away from the bottom plate (1) is fixedly connected to a conveyor belt (3), an end of the bottom plate (1) away from the conveyor belt (3) is fixedly connected to a fifth hydraulic rod (7), one side of the bottom plate (1) is fixedly connected to a side plate (4), an upper end of the side plate (4) is fixedly connected to a transfer mechanism (6), and a lower end of the side plate (4) is fixedly connected to a bag opening mechanism (5); The output end of the fifth hydraulic rod (7) is fixedly connected to a side spray rod (8), one end of the side spray rod (8) is fixedly connected to a connecting pipe (9), the end of the connecting pipe (9) away from the side spray rod (8) is fixedly connected to the other side spray rod (8), the end of the side spray rod (8) away from the connecting pipe (9) is fixedly connected to a fixing frame (10), a plurality of second spray heads (13) are fixedly connected inside the side spray rod (8), a connecting bracket (17) is fixedly connected to the lower surface of the fixing frame (10), the end of the connecting bracket (17) away from the fixing frame (10) is fixedly connected to the middle spray rod (11), both sides of the middle spray rod (11) are fixedly connected to the first spray heads (12), a hose (14) is fixedly connected to the fixing frame (10), the end of the hose (14) away from the fixing frame (10) is fixedly connected to a water pump (15), and the end of the water pump (15) away from the hose (14) is fixedly connected to a water bucket (16); The transfer mechanism (6) includes a connecting plate (61), one side of the side plate (4) is fixedly connected to the connecting plate (61), the upper end of the side plate (4) is provided with a sliding groove (63), one side of the connecting plate (61) is rotatably connected to a third hydraulic rod (62), one end of the third hydraulic rod (62) away from the connecting plate (61) is rotatably connected to a rotating plate (68), one end of the rotating plate (68) away from the third hydraulic rod (62) is rotatably connected to the side plate (4), and a guard plate (610) is fixedly connected to the side plate (4); The end of the rotating plate (68) close to the third hydraulic rod (62) passes through and is rotatably connected to a fixed shaft (67); the end of the fixed shaft (67) close to the rotating plate (68) is fixedly connected to a connecting rod (66); the end of the connecting rod (66) away from the fixed shaft (67) is fixedly connected to a rotating shaft (65); a roller (64) is rotatably connected to the rotating shaft (65); the roller (64) and the slide groove (63) are slidably engaged with each other; One end of the fixed shaft (67) away from the connecting rod (66) is fixedly connected to a connecting rod (69), one end of the connecting rod (69) away from the fixed shaft (67) is rotatably connected to a rotating rod (612), one end of the connecting rod (69) away from the fixed shaft (67) is fixedly connected to an upper clamping plate (611), one end of the rotating rod (612) close to the upper clamping plate (611) is fixedly connected to a lower clamping plate (614), one end of the rotating rod (612) away from the lower clamping plate (614) is rotatably connected to a fourth hydraulic rod (613), and one end of the fourth hydraulic rod (613) away from the rotating rod (612) is rotatably connected to the connecting rod (69).

2. A multi-directional disinfection mechanism for packaging bags according to claim 1, characterized in that: An inner tube (18) is fixedly connected to the water bucket (16), one end of the inner tube (18) is fixedly connected to the water pump (15), and one end of the inner tube (18) away from the water pump (15) is fixedly connected to a counterweight (19). One side of the conveyor belt (3) is fixedly connected to a motor (20).

3. The multi-directional disinfection mechanism for packaging bags according to claim 1, characterized in that: The bag opening mechanism (5) comprises a fixed plate (51), one side of the side plate (4) is fixedly connected to the fixed plate (51), a first hydraulic rod (52) is fixedly connected through the fixed plate (51), an output end of the first hydraulic rod (52) is fixedly connected to a mounting plate (53), a guide rod (54) is fixedly connected through the side plate (4), the guide rod (54) passes through the slidably connected mounting plate (53), and the mounting plate (53) passes through the slidably connected side plate (4).

4. The multi-directional disinfection mechanism for packaging bags according to claim 3, characterized in that: A mounting block (55) is fixedly connected to the upper surface of the mounting plate (53), a pair of first fixing blocks (59) are fixedly connected to both sides of the upper surface of the mounting plate (53), a pair of second fixing blocks (511) are fixedly connected to both sides of the upper surface of the mounting plate (53), a second hydraulic rod (56) is fixedly connected to one side of the mounting block (55), an output end of the second hydraulic rod (56) is fixedly connected to a first clamping plate (57), and gears (515) are rotatably connected to both sides of the upper surface of the mounting plate (53).

5. The multi-directional disinfection mechanism for packaging bags according to claim 4, characterized in that: Both ends of the first clamping plate (57) are fixedly connected with a first sliding rod (58), the first sliding rod (58) passes through and is slidably connected to a first fixed block (59), a first rack (510) is fixedly connected to the first sliding rod (58), and both ends of the first clamping plate (57) pass through and are slidably connected to a second sliding rod (512), an end of the second sliding rod (512) close to the first clamping plate (57) is fixedly connected to a second clamping plate (513), an end of the second sliding rod (512) away from the second clamping plate (513) passes through and is slidably connected to a second fixed block (511), a second rack (514) is fixedly connected to the second sliding rod (512), the second rack (514) and the first rack (510) are both engaged with each other with a gear (515), and a plurality of pneumatic suction cups (516) are fixedly connected between the first clamping plate (57) and the second clamping plate (513).

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