Conveying mechanism for intravenous injector production and operation method thereof

Abstract

The invention relates to the technical field of conveying mechanisms, in particular to a conveying mechanism for intravenous injector production and an operation method of the conveying mechanism. Two conveying assemblies of the same structure are symmetrically arranged on the inner side of a frame, and the distance between the two conveying assemblies can be adjusted; the conveying assembly comprises a first conveying mechanism and a second conveying mechanism which are symmetrically arranged up and down, the distance between the first conveying mechanism and the second conveying mechanism can be adjusted, and the conveying requirements of intravenous injector needle cylinders of different specifications can be met through the adjustable design in the horizontal direction and the vertical direction in cooperation with the flexible limiting assembly. Diversified production scenes can be easily coped with without replacing core components, the equipment modification cost of an enterprise is greatly reduced, and the universality and flexibility of the equipment are fully shown.

Description

Technical Field

[0001] The present invention relates to the technical field of conveying mechanisms, and particularly to a conveying mechanism for the production of intravenous syringes and an operation method thereof. Background Art

[0002] Intravenous syringes are one of the most commonly used instruments in clinical medicine. Their production process involves multiple precision links. As a core component on the production line, the conveying mechanism plays a key role in product quality, production efficiency, and safety. The conveying mechanism can transport the barrel part of the intravenous syringe to a designated work station.

[0003] The existing conveying mechanism adopts a rail conveying structure. The rail usually consists of two conveying frames, and each conveying frame is equipped with a conveying belt. The intravenous syringe barrel is conveyed between the two conveying belts by relying on the friction between itself and the belt. Since the position of the conveying belt is fixed and its size is fixed, it is usually only applicable to intravenous syringes of the same size, inconvenient for conveying intravenous syringe barrels of different specifications, with low applicability. And during the conveying process, there is a lack of a limiting structure at the finger support at the bottom of the intravenous syringe barrel, resulting in a risk of dislocation of the intravenous syringe barrel during conveying and low stability during conveying. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a conveying mechanism for the production of intravenous syringes and an operation method thereof.

[0005] To achieve the above object, the present invention provides the following technical solution: A conveying mechanism for the production of intravenous syringes, including a frame, multiple bottom wheels are provided at the lower end of the frame, two symmetrically arranged conveying components with the same structure are provided inside the frame, the distance between the two conveying components can be adjusted, the conveying component includes a first conveying mechanism and a second conveying mechanism arranged symmetrically up and down, and the distance between the first conveying mechanism and the second conveying mechanism can be adjusted; The first conveying mechanism includes a first C-shaped frame, a first support plate, a first belt pulley, and a first conveying belt, and the second conveying mechanism includes a second C-shaped frame, a second support plate, a second belt pulley, and a second conveying belt; The first C-shaped frame and the second C-shaped frame can slide up and down on the inner wall of the frame, the first support plate can stretch back and forth at both ends of the first C-shaped frame, the second support plate can stretch back and forth at both ends of the second C-shaped frame, the two first belt pulleys are respectively located at both ends of the first conveying belt, the two second belt pulleys are respectively located at both ends of the second conveying belt, and a first motor is provided on the frame, and a first rotating shaft for driving the first belt pulley and the second belt pulley to rotate is provided at the output end of the first motor.

[0006] In order to facilitate the adjustment of the distance between the first conveying mechanism and the second conveying mechanism in the vertical direction, the improvement of the present invention is that a plurality of sliding grooves are symmetrically arranged on both sides of the frame. A slider that penetrates the sliding groove and is slidably connected to the sliding groove is provided in the middle part of the first C-shaped frame and the second C-shaped frame. A fixing frame is provided on the outer wall of the frame, and a second motor is provided on the fixing frame. A second rotating shaft is provided at the output end of the second motor. Two first threaded rods with reverse threaded structures are symmetrically arranged on the second rotating shaft. The two first threaded rods respectively penetrate the two sliders and are threadedly connected to the sliders. A support rod that penetrates the two ends of the first C-shaped frame and the second C-shaped frame is provided inside the frame, and the first C-shaped frame and the second C-shaped frame are both slidably connected to the support rod.

[0007] In order to facilitate the adjustment of the distance between the two conveying components in the horizontal direction, the improvement of the present invention is that first empty slots are provided at both ends of the first C-shaped frame. The rear end of the first support plate is inserted into the interior of the first empty slot. A first positioning plate is fixedly provided at the front end of the first support plate. A first positioning shaft is rotatably provided on the first positioning plate. The first belt pulley is penetrated by the first positioning shaft and fixedly connected to the first positioning shaft. Second empty slots are provided at both ends of the second C-shaped frame. The rear end of the second support plate is inserted into the interior of the second empty slot. A second positioning plate is fixedly provided at the front end of the second support plate. A second positioning shaft is rotatably provided on the second positioning plate. The second belt pulley is penetrated by the second positioning shaft and fixedly connected to the second positioning shaft. A positioning groove is provided at the lower end of the first positioning shaft. A positioning block that is inserted into the positioning groove is provided at the upper end of the second positioning shaft, and the positioning block can be telescopic in the positioning groove. The top end of the first rotating shaft is connected to the bottom end of one of the second positioning shafts; A vertical pipe is vertically arranged between the first support plate and the second support plate. Telescopic vertical rods are provided at both ends of the vertical pipe. The ends of the vertical rods far from the vertical pipe are respectively connected to the first support plate and the second support plate. Two vertical pipes on the same side are connected by a cross plate. A vertical plate is provided at the lower end of the cross plate. A base that is slidably connected to the frame is provided at the bottom end of the vertical plate. A sleeve is provided at the bottom of the vertical plate. A third motor is provided at the bottom of the frame. A third rotating shaft is provided at the output end of the third motor. Two second threaded rods with reverse threaded connections are symmetrically arranged on the third rotating shaft. The two second threaded rods respectively penetrate the two sleeves and are threadedly connected to the sleeves.

[0008] In order to improve the stability of the base during movement, the improvement of the present invention is that a plurality of guide rails are provided at the bottom of the frame. The base is slidably connected to the guide rails, and a guide groove penetrated by the guide rails is provided on the base.

[0009] In order to improve the stability of the syringe barrel during transportation, the improvement of the present invention is that the conveying assembly further includes a limiting assembly. The limiting assembly is located above the first support plate. The limiting assembly includes a bottom plate and a top plate. The bottom plate is fixed above the first positioning plate. The top plate is located above the bottom plate, and a limiting groove is provided between the top plate and the bottom plate. A plurality of balls are rotatably provided on the lower surface of the top plate and the upper surface of the bottom plate. The height of the limiting groove can be adjusted. A limiting block is provided at the outer end of the top plate, and a limiting rod vertically penetrating the limiting block is provided at the outer end of the bottom plate. The limiting block is slidably connected to the limiting rod. A locking rod is provided outside the limiting block. The locking rod penetrates the limiting block and one end contacts the limiting rod. The locking rod is threadedly connected to the limiting block.

[0010] An operation method of a conveying mechanism for producing a syringe includes the following steps: The first step: Adjust the distance between the two conveying assemblies in the horizontal direction according to the specific size of the syringe barrel, and adjust the distance between the first conveying mechanism and the second conveying mechanism in the vertical direction; The second step: Start the first motor, so that the second positioning shaft drives the first positioning shaft to rotate through the positioning block, so that the second belt pulley and the first positioning plate rotate synchronously, and then the second conveying belt and the first conveying belt rotate synchronously; The third step: Load the syringe barrel at the feeding end of the frame. When the outer wall of the syringe barrel contacts the first conveying belt and the second conveying belt, due to the action of friction, the syringe barrel will be conveyed between the two first conveying belts and between the two second conveying belts. At this time, the finger support at the top of the syringe barrel will move in the limiting groove; The fourth step: Place the designated receiving device at the discharging end of the frame to receive the material.

[0011] Further, the improvement of the present invention is that the second motor is started, so that the second rotating shaft drives the first threaded rod to rotate, and the two sliders move synchronously and in opposite directions along the two first threaded rods, so that the first C-shaped frame and the second C-shaped frame slide on the inner wall of the frame. During this process, the two vertical rods will expand and contract at both ends of the vertical tube, and the positioning block will slide in the positioning groove, so as to adjust the distance between the first conveying belt and the second conveying belt in the vertical direction; The third motor is started, the third rotating shaft drives the second threaded rod to rotate, the two sleeves slide synchronously and in opposite directions along the second threaded rod, and the base slides along the guide rail. At this time, the cross plate will make the two vertical rods drive the first support plate to expand and contract in the first empty groove through the vertical tube, and drive the second support plate to expand and contract in the second empty groove, so as to adjust the distance between the two second conveying belts and the distance between the two first conveying belts in the horizontal direction.

[0012] Rotate the locking rod to release the limit on the limiting rod, adjust the position of the top plate, and then adjust the height of the limiting groove. Finally, lock the locking rod.

[0013] Compared with the prior art, the present invention provides a conveying mechanism and an operation method for the production of intravenous syringes, having the following beneficial effects: Super strong adaptability and flexible use: Through the adjustable design in the horizontal and vertical directions, combined with a flexible limiting component, it can respond to the conveying requirements of intravenous syringe barrels of different specifications. Without replacing the core components, it can easily handle diverse production scenarios, greatly reducing the equipment transformation cost of enterprises and fully demonstrating the versatility and flexibility of the equipment. Stable conveying and quality assurance: The double-layer belt clamping and conveying method, combined with the design of the ball limiting groove, firmly restricts the syringe barrel from multiple dimensions. Effectively preventing problems such as misalignment and tipping of the syringe barrel during the conveying process, greatly reducing product losses caused by improper conveying, and effectively ensuring the continuity of production and the high quality of products. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a first perspective three-dimensional structural schematic diagram of the present invention; Figure 2 is a second perspective three-dimensional structural schematic diagram of the present invention; Figure 3 is of the present invention Figure 1 right view; Figure 4 is of the present invention Figure 1 top view; Figure 5 is of the present invention Figure 1 partial enlarged structural schematic diagram at A in the present invention; Figure 6 is of the present invention Figure 2 partial enlarged structural schematic diagram at B in the present invention; Figure 7 is of the present invention Figure 3 partial enlarged structural schematic diagram at C in the present invention; Figure 8 is a cross-sectional view of the positioning groove and the positioning block in the present invention; In the figure: 1. Frame; 2. First C-shaped frame; 3. First empty slot; 4. First support plate; 5. First positioning plate; 6. First positioning shaft; 7. First belt pulley; 8. First conveyor belt; 9. First motor; 10. First rotating shaft; 11. Second C-shaped frame; 12. Second empty slot; 13. Second support plate; 14. Second positioning plate; 15. Second positioning shaft; 16. Second belt pulley; 17. Second conveyor belt; 18. Positioning slot; 19. Positioning block; 20. Support rod; 21. Fixed frame; 22. Chute; 23. Second motor; 24. Second rotating shaft; 25. First threaded rod; 26. Vertical pipe; 27. Vertical rod; 28. Vertical plate; 29. Third motor; 30. Third rotating shaft; 31. Second threaded rod; 32. Base; 33. Guide rail; 34. Bottom wheel; 35. Bottom plate; 36. Top plate; 37. Limit block; 38. Limit rod; 39. Locking rod; 40. Sleeve; 41. Horizontal plate; 42. Slide block. Detailed implementation mode

[0015] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0016] Please refer to Figures 1 - 8 , a conveying mechanism for the production of intravenous syringes of the present invention includes a frame 1. A plurality of bottom wheels 34 are provided at the lower end of the frame 1 (to facilitate the overall movement of the device). Two conveying components with the same structure are symmetrically arranged inside the frame 1, and the distance between the two conveying components can be adjusted. The conveying component includes a first conveying mechanism and a second conveying mechanism arranged symmetrically up and down, and the distance between the first conveying mechanism and the second conveying mechanism can be adjusted; The first conveying mechanism includes a first C-shaped frame 2, a first support plate 4, a first belt pulley 7, and a first conveyor belt 8. The second conveying mechanism includes a second C-shaped frame 11, a second support plate 13, a second belt pulley 16, and a second conveyor belt 17; The first C-shaped frame 2 and the second C-shaped frame 11 can slide up and down on the inner wall of the frame 1. The first support plate 4 can stretch back and forth at both ends of the first C-shaped frame 2. The second support plate 13 can stretch back and forth at both ends of the second C-shaped frame 11. The two first belt pulleys 7 are respectively located at both ends of the first conveyor belt 8. The two second belt pulleys 16 are respectively located at both ends of the second conveyor belt 17. And a first motor 9 is provided on the frame 1. The output end of the first motor 9 is provided with a first rotating shaft 10 for driving the first belt pulley 7 and the second belt pulley 16 to rotate.

[0017] In order to facilitate the adjustment of the distance between the first conveying mechanism and the second conveying mechanism in the vertical direction, the improvement of the present invention is that a plurality of sliding grooves 22 are symmetrically arranged on both sides of the frame 1. A slider 42 is provided in the middle part of the first U-shaped frame 2 and the second U-shaped frame 11, which penetrates through the sliding groove 22 and is slidably connected to the sliding groove 22. A fixed frame 21 is provided on the outer wall of the frame 1. A second motor 23 is provided on the fixed frame 21. A second rotating shaft 24 is provided at the output end of the second motor 23. Two first threaded rods 25 with reverse threaded structures are symmetrically arranged on the second rotating shaft 24. The two first threaded rods 25 respectively penetrate through the two sliders 42 and are threadedly connected to the sliders 42. A support rod 20 is provided inside the frame 1, which penetrates through both ends of the first U-shaped frame 2 and the second U-shaped frame 11. The first U-shaped frame 2, the second U-shaped frame 11 and the support rod 20 are all slidably connected.

[0018] Both ends of the first U-shaped frame 2 are provided with first empty slots 3. The rear end of the first support plate 4 is inserted into the inside of the first empty slot 3. The front end of the first support plate 4 is fixedly provided with a first positioning plate 5. A first positioning shaft 6 is rotatably provided on the first positioning plate 5. The first belt pulley 7 is penetrated by the first positioning shaft 6 and is fixedly connected to the first positioning shaft 6. Both ends of the second U-shaped frame 11 are provided with second empty slots 12. The rear end of the second support plate 13 is inserted into the inside of the second empty slot 12. The front end of the second support plate 13 is fixedly provided with a second positioning plate 14. A second positioning shaft 15 is rotatably provided on the second positioning plate 14. The second belt pulley 16 is penetrated by the second positioning shaft 15 and is fixedly connected to the second positioning shaft 15. A positioning groove 18 is provided at the lower end of the first positioning shaft 6. A positioning block 19 is provided at the upper end of the second positioning shaft 15, which is inserted into the inside of the positioning groove 18, and the positioning block 19 can expand and contract in the positioning groove 18. The top end of the first rotating shaft 10 is connected to the bottom end of one of the second positioning shafts 15; A vertical pipe 26 is vertically arranged between the first support plate 4 and the second support plate 13. The two ends of the vertical pipe 26 are telescopically provided with vertical rods 27. The ends of the vertical rods 27 away from the vertical pipe 26 are respectively connected to the first support plate 4 and the second support plate 13. The two vertical pipes 26 on the same side are connected by a cross plate 41. A vertical plate 28 is provided at the lower end of the cross plate 41. The bottom end of the vertical plate 28 is provided with a base 32 that is slidably connected to the frame 1. A sleeve 40 is provided at the bottom of the vertical plate 28. A third motor 29 is provided at the bottom of the frame 1. A third rotating shaft 30 is provided at the output end of the third motor 29. Two second threaded rods 31 with reverse threaded connections are symmetrically arranged on the third rotating shaft 30. The two second threaded rods 31 respectively penetrate through the two sleeves 40 and are threadedly connected to the sleeves 40.

[0019] A plurality of guide rails 33 are provided at the bottom of the frame 1. The base 32 is slidably connected to the guide rails 33, and a guide groove penetrated by the guide rails 33 is provided on the base 32, which can improve the stability of the base 32 during movement.

[0020] The conveying assembly further includes a limiting assembly. The limiting assembly is located above the first support plate 4. The limiting assembly includes a bottom plate 35 and a top plate 36. The bottom plate 35 is fixed above the first positioning plate 5. The top plate 36 is located above the bottom plate 35, and a limiting groove is provided between the top plate 36 and the bottom plate 35. A plurality of balls are rotatably provided on the lower surface of the top plate 36 and the upper surface of the bottom plate 35. The height of the limiting groove can be adjusted. A limiting block 37 is provided at the outer end of the top plate 36. A limiting rod 38 vertically penetrating the limiting block 37 is provided at the outer end of the bottom plate 35. The limiting block 37 is slidably connected to the limiting rod 38. A locking rod 39 is provided on the outer side of the limiting block 37. The locking rod 39 penetrates the limiting block 37 and one end contacts the limiting rod 38. The locking rod 39 is threadedly connected to the limiting block 37, which can improve the stability of the syringe barrel during transportation.

[0021] An operation method of a conveying mechanism for the production of a syringe includes the following steps: The first step: Adjust the distance between the two conveying assemblies in the horizontal direction according to the specific size of the syringe barrel, and adjust the distance between the first conveying mechanism and the second conveying mechanism in the vertical direction; The second step: Start the first motor 9, so that the second positioning shaft 15 drives the first positioning shaft 6 to rotate through the positioning block 19, so that the second belt pulley 16 and the first positioning plate 5 rotate synchronously, and then the second conveying belt 17 and the first conveying belt 8 rotate synchronously; The third step: Load the syringe barrel at the feeding end of the frame 1. When the outer wall of the syringe barrel contacts the first conveying belt 8 and the second conveying belt 17, due to the action of friction, the syringe barrel will be conveyed between the two first conveying belts 8 and between the two second conveying belts 17. At this time, the finger support at the top of the syringe barrel will move in the limiting groove; The fourth step: Place the designated receiving device at the discharging end of the frame 1 to receive the material.

[0022] Start the second motor 23, so that the second rotating shaft 24 drives the first threaded rod 25 to rotate, so that the two sliders 42 move synchronously and in opposite directions along the two first threaded rods 25, so that the first U-shaped frame 2 and the second U-shaped frame 11 slide on the inner wall of the frame 1. During this process, the two vertical rods 27 will expand and contract at both ends of the vertical pipe 26, and the positioning block 19 will slide in the positioning groove 18, so as to adjust the distance between the first conveying belt 8 and the second conveying belt 17 in the vertical direction; Start the third motor 29. The third rotating shaft 30 drives the second threaded rod 31 to rotate, causing the two sleeves 40 to slide synchronously and in opposite directions along the second threaded rod 31, and the base 32 to slide along the guide rail 33. At this time, the cross plate 41 will cause the two vertical rods 27 to drive the first support plate 4 to expand and contract in the first empty slot 3 and drive the second support plate 13 to expand and contract in the second empty slot 12 through the vertical pipe 26, so as to adjust the distance between the two second conveyor belts 17 and the distance between the two first conveyor belts 8 in the horizontal direction.

[0023] Rotate the locking rod 39 to release the limit on the limiting rod 38, adjust the position of the top plate 36, and then adjust the height of the limiting slot. Finally, lock the locking rod 39.

[0024] The conveying mechanism for the production of this intravenous syringe realizes the efficient conveying of syringes of different specifications through the dual-mechanism design of "dynamic adjustment + stable transmission". Its working process can be disassembled into two core links: parameter adaptation and material transmission. In the parameter adaptation stage, the mechanism can perform three-dimensional space adjustment according to the syringe size.

[0025] In the horizontal direction, the third motor 29 drives the third rotating shaft 30. Utilizing the reverse-thread characteristic of the second threaded rod 31, the two sleeves 40 slide in opposite directions along the guide rail 33, driving the movement of the base 32 and the connected vertical plate 28 and cross plate 41 structures. Through the telescopic cooperation of the vertical pipe 26 and the vertical rod 27, the first support plate 4 and the second support plate 13 are respectively pushed to expand and contract in the first empty slot 3 and the second empty slot 12, precisely adjusting the horizontal distance between the two conveying components to adapt to syringes of different diameters.

[0026] In the vertical direction, the second motor 23 drives the second rotating shaft 24 and the first threaded rod 25 to rotate, driving the slider 42 to slide in the chute 22, and causing the first U-shaped frame 2 and the second U-shaped frame 11 to move up and down along the inner wall of the frame 1. During this process, the vertical rod 27 telescopically adapts in the vertical pipe 26, and the positioning block 19 telescopically adapts in the positioning slot 18, realizing the flexible adjustment of the vertical distance between the first and second conveying mechanisms to match syringes of different lengths. In addition, by rotating the locking rod 39 to release the limit on the limiting rod 38, the position of the top plate 36 is adjusted to adjust the height of the limiting slot, adapting to different thicknesses of the syringe finger support.

[0027] Material transmission stage: After the first motor 9 is started, the first rotating shaft 10 drives the second positioning shaft 15 to rotate (the power transmission is realized through a coupling or key connection). The nested design of the positioning block 19 and the positioning slot 18 ensures the synchronous operation of the first positioning shaft 6. Its cross-section is as Figure 8As shown, the two sides of the positioning block 19 are provided with rectangular blocks, which can ensure the stable rotation of the second positioning shaft 15 and the first positioning shaft 6, thereby driving the first belt drive wheel 7 and the second belt drive wheel 16 to rotate in coordination, so that the first conveyor belt 8 and the second conveyor belt 17 form a stable closed-loop transmission system. The number of the first motors 9 is not mandatory here, and two synchronously operating first motors 9 can also be set to rotate synchronously with the two second positioning shafts 15 respectively; When the intravenous syringe is loaded from the feeding end of frame 1, the outer wall of the syringe fits tightly against the belt and moves forward smoothly relying on friction. The finger rest on the top of the syringe is embedded in the limit groove, and the ball in the groove greatly reduces the friction resistance, preventing the syringe from deflecting or flipping during the conveying process, and finally accurately delivering the syringe to the receiving device at the unloading end of frame 1; When the present structure is in use, the loading method may be manual loading, or the loading process may be automated through automated equipment such as a robotic arm and a vibrating plate. There is no regulation on the size of the bottom plate 35 and the top plate 36. During the loading process, first insert the finger support at the bottom of the intravenous syringe barrel into the limit groove. As the intravenous syringe barrel continues to be loaded, the intravenous syringe barrel will contact the first conveyor belt 8 and the second conveyor belt 17 in turn.

[0028] The automatic adjustment mode combining motor drive and screw drive is adopted to significantly simplify the parameter adjustment process. Operators can quickly complete equipment adjustment and easily switch between different production tasks efficiently. Standardized operation logic reduces the technical requirements for operators and comprehensively improves the operation efficiency of the production line. Frame 1: Made of carbon steel, the size is customized according to actual conditions.

[0029] Bottom wheel 34: polyurethane universal wheel with brake function.

[0030] The first motor 9 , the second motor 23 , and the third motor 29 may be servo motors.

[0031] The first threaded rod 25 and the second threaded rod 31 are made of 45# steel and are surface hardened.

[0032] Belt drive pulley: Made of aluminum alloy, suitable for high-speed operation.

[0033] The first conveyor belt 8 and the second conveyor belt 17 are made of polyurethane and have an anti-slip surface treatment.

[0034] In the description herein, it should be noted that relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Also, the terms "comprises", "comprising", or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made in these embodiments without departing from the principles and spirit of the invention.

Claims

1. A conveying mechanism for the production of intravenous syringes, comprising a frame (1), and a plurality of bottom wheels (34) are provided at the lower end of the frame (1), characterized in that: Two conveying components with the same structure are symmetrically arranged inside the frame (1), and the distance between the two conveying components can be adjusted. The conveying component includes a first conveying mechanism and a second conveying mechanism which are symmetrically arranged up and down, and the distance between the first conveying mechanism and the second conveying mechanism can be adjusted; The first conveying mechanism includes a first C-shaped frame (2), a first support plate (4), a first belt pulley (7) and a first conveying belt (8), and the second conveying mechanism includes a second C-shaped frame (11), a second support plate (13), a second belt pulley (16) and a second conveying belt (17); The first C-shaped frame (2) and the second C-shaped frame (11) can slide up and down on the inner wall of the frame (1), the first support plate (4) can stretch back and forth at both ends of the first C-shaped frame (2), the second support plate (13) can stretch back and forth at both ends of the second C-shaped frame (11), the two first belt pulleys (7) are respectively located at both ends of the first conveying belt (8), the two second belt pulleys (16) are respectively located at both ends of the second conveying belt (17), and a first motor (9) is arranged on the frame (1). The output end of the first motor (9) is provided with a first rotating shaft (10) for driving the first belt pulley (7) and the second belt pulley (16) to rotate.

2. The conveying mechanism for the production of an intravenous syringe according to claim 1, wherein: A plurality of sliding grooves (22) are symmetrically arranged on both sides of the frame (1). The middle parts of the first C-shaped frame (2) and the second C-shaped frame (11) are provided with sliders (42) that penetrate through the sliding grooves (22) and are slidably connected to the sliding grooves (22). A fixing frame (21) is arranged on the outer wall of the frame (1). A second motor (23) is arranged on the fixing frame (21). The output end of the second motor (23) is provided with a second rotating shaft (24). Two first threaded rods (25) with reverse threaded structures are symmetrically arranged on the second rotating shaft (24). The two first threaded rods (25) respectively penetrate through the two sliders (42) and are threadedly connected to the sliders (42). A support rod (20) penetrating through both ends of the first C-shaped frame (2) and the second C-shaped frame (11) is arranged inside the frame (1), and the first C-shaped frame (2) and the second C-shaped frame (11) are both slidably connected to the support rod (20).

3. The conveying mechanism for the production of an intravenous syringe according to claim 2, wherein: Both ends of the first C-shaped frame (2) are provided with first empty slots (3). The rear end of the first support plate (4) is inserted into the interior of the first empty slot (3). The front end of the first support plate (4) is fixedly provided with a first positioning plate (5). A first positioning shaft (6) is rotatably arranged on the first positioning plate (5). The first belt pulley (7) is penetrated by the first positioning shaft (6) and fixedly connected to the first positioning shaft (6). Both ends of the second C-shaped frame (11) are provided with second empty slots (12). The rear end of the second support plate (13) is inserted into the interior of the second empty slot (12). The front end of the second support plate (13) is fixedly provided with a second positioning plate (14). A second positioning shaft (15) is rotatably arranged on the second positioning plate (14). The second belt pulley (16) is penetrated by the second positioning shaft (15) and fixedly connected to the second positioning shaft (15). A positioning slot (18) is provided at the lower end of the first positioning shaft (6). A positioning block (19) that is inserted into the interior of the positioning slot (18) is provided at the upper end of the second positioning shaft (15), and the positioning block (19) can expand and contract within the positioning slot (18). The top end of the first rotating shaft (10) is connected to the bottom end of one of the second positioning shafts (15); A vertical pipe (26) is vertically arranged between the first support plate (4) and the second support plate (13). Telescopic vertical rods (27) are arranged at both ends of the vertical pipe (26). The ends of the vertical rods (27) away from the vertical pipe (26) are respectively connected to the first support plate (4) and the second support plate (13). Two vertical pipes (26) on the same side are connected by a cross plate (41). A vertical plate (28) is provided at the lower end of the cross plate (41). A base (32) that is slidably connected to the frame (1) is provided at the bottom end of the vertical plate (28). A sleeve (40) is provided at the bottom of the vertical plate (28). A third motor (29) is provided at the bottom of the frame (1). A third rotating shaft (30) is provided at the output end of the third motor (29). Two second threaded rods (31) that are reversely threadedly connected are symmetrically arranged on the third rotating shaft (30). The two second threaded rods (31) respectively penetrate through the two sleeves (40) and are threadedly connected to the sleeves (40).

4. The conveying mechanism for the production of a venous syringe according to claim 3, characterized in that: A plurality of guide rails (33) are provided at the bottom of the frame (1). The base (32) is slidably connected to the guide rails (33), and a guide slot penetrated by the guide rails (33) is provided on the base (32).

5. The conveying mechanism for the production of intravenous syringes according to claim 4, characterized in that: The conveying assembly further includes a limiting assembly. The limiting assembly is located above the first support plate (4). The limiting assembly includes a bottom plate (35) and a top plate (36). The bottom plate (35) is fixed above the first positioning plate (5). The top plate (36) is located above the bottom plate (35), and a limiting slot is provided between the top plate (36) and the bottom plate (35). A plurality of balls are rotatably arranged on the lower surface of the top plate (36) and the upper surface of the bottom plate (35), and the height of the limiting slot can be adjusted.

6. The conveying mechanism for the production of a venous syringe according to claim 5, characterized in that: The outer end of the top plate (36) is provided with a limit block (37). The outer end of the bottom plate (35) is vertically provided with a limit rod (38) passing through the limit block (37). The limit block (37) is slidably connected to the limit rod (38). A locking rod (39) is provided outside the limit block (37). The locking rod (39) passes through the limit block (37) and one end contacts the limit rod (38). The locking rod (39) is threadedly connected to the limit block (37).

7. An operating method of a conveying mechanism for the production of intravenous syringes, which is used to implement the conveying mechanism for the production of intravenous syringes according to any one of claims 1-6, characterized in that: It includes the following steps: The first step: Adjust the distance between the two conveying components in the horizontal direction according to the specific size of the syringe barrel of the intravenous syringe, and adjust the distance between the first conveying mechanism and the second conveying mechanism in the vertical direction; The second step: Start the first motor (9), so that the second positioning shaft (15) drives the first positioning shaft (6) to rotate through the positioning block (19), so that the second belt pulley (16) and the first positioning plate (5) rotate synchronously, and then the second conveying belt (17) and the first conveying belt (8) rotate synchronously; The third step: Load the syringe barrel of the intravenous syringe at the feeding end of the frame (1). When the outer wall of the syringe barrel of the intravenous syringe contacts the first conveying belt (8) and the second conveying belt (17), due to the action of friction, the syringe barrel of the intravenous syringe will be conveyed between the two first conveying belts (8) and between the two second conveying belts (17). At this time, the finger support at the top of the syringe barrel of the intravenous syringe will move in the limit groove; The fourth step: Place the specified receiving device at the discharging end of the frame (1) to receive the material.

8. The operating method of a conveying mechanism for the production of an intravenous syringe according to claim 7, characterized in that: Start the second motor (23), so that the second rotating shaft (24) drives the first threaded rod (25) to rotate, so that the two sliders (42) move synchronously and in opposite directions along the two first threaded rods (25), so that the first C-shaped frame (2) and the second C-shaped frame (11) slide on the inner wall of the frame (1). During this process, the two vertical rods (27) will expand and contract at both ends of the vertical tube (26), and the positioning block (19) will slide in the positioning groove (18), so as to adjust the distance between the first conveying belt (8) and the second conveying belt (17) in the vertical direction; Start the third motor (29), the third rotating shaft (30) drives the second threaded rod (31) to rotate, so that the two sleeves (40) slide synchronously and in opposite directions along the second threaded rod (31), and the base (32) slides along the guide rail (33). At this time, the cross plate (41) will drive the two vertical rods (27) to drive the first support plate (4) to expand and contract in the first empty groove (3) through the vertical tube (26), and drive the second support plate (13) to expand and contract in the second empty groove (12), so as to adjust the distance between the two second conveying belts (17) and the distance between the two first conveying belts (8) in the horizontal direction; Rotate the locking rod (39) to release the limit of the locking rod (39) on the limit rod (38), adjust the position of the top plate (36), and then adjust the height of the limit groove. Finally, lock the locking rod (39).

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