Pre-filled needle torsion rod loading mechanism
By designing a pre-charged needle torsion bar feeding mechanism, the automatic feeding of torsion bars is achieved using a lifting conveyor belt and material handling components, which solves the problem of low feeding efficiency of torsion bars and improves production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BIOREGEN BIOMEDICAL (CHANGZHOU) CO LTD
- Filing Date
- 2025-07-11
- Publication Date
- 2026-07-21
AI Technical Summary
In the existing technology, the torsion bar feeding process in the pre-filled needle production process is inefficient and requires manual operation, which is time-consuming and labor-intensive.
A pre-filled needle torsion bar feeding mechanism was designed, including a hopper, a lifting conveyor belt, a material sorting component, and a feeding conveyor belt. The lifting conveyor belt transports the torsion bar from the hopper to the material sorting component, which arranges the torsion bar into a vertical state. The torsion bar then enters the placement seat of the feeding conveyor belt through a transition conveyor component, thereby achieving automated feeding.
It improves the automation and efficiency of torsion bar feeding, and reduces the time and effort required for manual operation.
Smart Images
Figure CN224529832U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pre-filled needle production, and in particular to a pre-filled needle torsion bar feeding mechanism. Background Technology
[0002] During the production process of pre-charged needles, the pre-charged needle tube and the torsion bar need to be assembled. The assembly line is equipped with a feeding conveyor belt, which is equipped with a placement seat for vertically placing the torsion bars. The workers take the torsion bars out of the hopper one by one and place them on the placement seat of the conveyor belt. The conveyor belt transports the torsion bars to the subsequent assembly station with the pre-charged needle tube, and then the mechanical gripper picks up the torsion bar and the pre-charged needle tube for assembly.
[0003] It is time-consuming and labor-intensive for staff to remove the torsion bars one by one from the hopper and place them on the conveyor belt, and the feeding efficiency needs to be improved. Utility Model Content
[0004] To address the aforementioned technical problems, this application provides a pre-charged needle torsion bar feeding mechanism.
[0005] The pre-charged needle torsion bar feeding mechanism provided in this application adopts the following technical solution: A pre-charged needle torsion bar feeding mechanism includes a hopper, a lifting conveyor belt, a material handling assembly, and a feeding conveyor belt. The hopper contains several torsion bars. The lifting conveyor belt is inclined, with its highest point further away from the hopper than its lowest point. An opening is provided on the side of the hopper closest to the lifting conveyor belt. The belt body of the lifting conveyor belt is in close contact with the opening of the hopper. An upper step is provided on the outer surface of the belt body, with the length direction of the step aligned with the width direction of the belt body. Multiple steps are equidistantly arranged along the circumference of the belt body. Each torsion bar includes a rod body and a limiting circular plate. The limiting circular plate is coaxially connected to the top surface of the rod body, and its diameter is larger than the diameter of the rod body. When the step passes through the opening of the hopper, the limiting circular plate of the torsion bar hangs on the step. The material handling assembly is used to straighten the torsion bar into a vertical state with the limiting circular plate located on the top surface of the bar. The feeding conveyor belt is used to transport the torsion bar to the next work station. A transition conveyor assembly is provided between the material handling assembly and the feeding conveyor belt.
[0006] Preferably, the material handling assembly includes a receiving frame, a guide plate, and a material handling conveyor strip. The receiving frame is located below the highest point of the feeding conveyor belt, the length direction of the receiving frame is parallel to the width direction of the lifting conveyor belt, and the length of the receiving frame is greater than the width of the lifting conveyor belt. The guide plate includes a first plate and a second plate, both of which are inclined. The first plate is further away from the lifting conveyor belt than the second plate, and the bottom ends of the first plate and the second plate are close to each other. The material handling conveyor is located between the first plate and the second plate. The material handling conveyor includes a first conveyor and a second conveyor, which are rotatably arranged by a rotating assembly and rotate in opposite directions. The limiting circular plate of the torsion bar is hung on the two conveyor bars that are close to each other. The bottom end of the first plate abuts against the inner wall of the portion of the first conveyor that is close to the second conveyor, and the bottom end of the second plate abuts against the inner wall of the portion of the second conveyor that is close to the first conveyor.
[0007] Preferably, the rotating assembly includes a rotating motor, a first rotating shaft, a second rotating shaft, a first gear, and a second gear. The rotating motor is fixed to the bottom wall of the receiving frame. Both the first rotating shaft and the second rotating shaft are rotatably connected to the receiving frame. A tensioning shaft is provided at the end of the first conveyor bar away from the first rotating shaft. The first rotating shaft cooperates with the tensioning shaft to tension the first conveyor bar. A tensioning shaft is provided at the end of the second conveyor bar away from the second rotating shaft. The second rotating shaft cooperates with the tensioning shaft to tension the second conveyor bar. Both the first tensioning shaft and the second tensioning shaft are fixedly connected to the receiving frame. The output shaft of the rotating motor passes through the receiving frame and is coaxially connected to the rotating shaft. The gear is coaxially connected to the first rotating shaft, and the second gear is coaxially connected to the second rotating shaft. The first gear and the second gear mesh.
[0008] Preferably, the material handling assembly further includes a brush roller, which is rotatably connected to the side wall of the receiving frame via a rotary motor. The output shaft of the rotary motor passes through the receiving frame and is coaxially connected to the brush roller. The periphery of the brush roller contacts the material handling conveyor strip. The torsion bar with the limiting circular plate hanging on the first and second conveyor strips that are close to each other and whose rod body is located between the first and second conveyor strips is a torsion bar with a qualified conveying state. All other torsion bars are torsion bars with unqualified conveying states. When the brush roller rotates, it pushes the torsion bars with unqualified conveying states toward the direction closer to the hopper.
[0009] Preferably, the feeding conveyor belt is located below the receiving frame. The transition conveyor assembly includes two transition plates. The top ends of the two transition plates are connected to the end of the feeding conveyor belt away from the hopper. The bottom ends of the two transition plates extend above the feeding conveyor belt. The distance between the two transition plates is less than the diameter of the limiting circular plate and greater than the diameter of the rod. The limiting circular plate is hung on the two transition plates. A horizontal section is provided at the bottom of the transition plate. A discharge chute for the limiting circular plate to pass through is opened on the horizontal section. A placement seat is provided on the feeding conveyor belt. Multiple placement seats are equidistantly arranged along the circumference of the feeding conveyor belt. During the rotation of the feeding conveyor belt, each placement seat moves to the direct underside of the horizontal section. The torsion bar descends along the transition plate to the horizontal section and falls from the discharge chute into the corresponding placement seat. After the torsion bar is received in the placement seat, the feeding conveyor belt continues to rotate until the next empty placement seat moves to the direct underside of the horizontal section.
[0010] Preferably, the placement seat includes a receiving tube and a fixed seat. The outer peripheral wall of the receiving tube is fixedly connected to the inner peripheral wall of the fixed seat. The inner diameter of the receiving tube is larger than the diameter of the rod body and smaller than the diameter of the limiting circular plate. A clearance groove is provided on the side wall of the receiving tube for the claw of the mechanical gripper to pass through. The clearance groove penetrates the top wall of the receiving tube.
[0011] Preferably, a dust cover is provided on the top surface of the hopper, and there is a clearance between the dust cover and the lifting conveyor belt to allow the steps and torsion bars on the steps to pass through.
[0012] Preferably, the lifting conveyor belt is provided with a dust cover, which covers the top and upper half of the lifting conveyor belt and there is a space between the inner wall of the dust cover and the belt body of the feeding conveyor belt.
[0013] In summary, this application includes the following beneficial technical effects: The lifting conveyor belt moves the torsion bar from the hopper to the material handling conveyor bar in the receiving frame, and then through the transition plate into the placement seat. It has a high degree of automation, saves time and labor, and has high material feeding efficiency. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of a pre-charged needle torsion bar feeding mechanism in an embodiment of this application.
[0015] Figure 2 This is a schematic diagram illustrating the structure of the lifting conveyor belt and the hopper in the embodiments of this application.
[0016] Figure 3 This is a schematic diagram illustrating the structure of the material handling assembly in an embodiment of this application.
[0017] Figure 4This is a schematic diagram illustrating the structure of the brush roller in an embodiment of this application.
[0018] Figure 5 This is a schematic diagram illustrating the structure of the placement base in an embodiment of this application.
[0019] Explanation of reference numerals in the attached drawings: 1. Hopper; 11. Opening; 12. Dust cover; 2. Lifting conveyor belt; 21. Step; 22. Dust cover; 3. Material handling assembly; 31. Receiving frame; 32. Guide plate; 321. First plate; 322. Second plate; 33. Material handling conveyor bar; 331. First conveyor bar; 332. Second conveyor bar; 34. Rotating assembly; 341. Rotating motor; 342. Rotating shaft one; 343. Rotating shaft two 344. First gear; 345. Second gear; 346. Tensioning shaft one; 347. Tensioning shaft two; 35. Brush roller; 36. Rotary motor; 4. Feeding conveyor belt; 41. Placement seat; 411. Receiving tube; 412. Fixed seat; 413. Relief groove; 5. Transition plate; 51. Horizontal section; 511. Unloading chute; 6. Torsion bar; 61. Rod body; 62. Limiting circular plate; 7. Base plate; 71. Support plate; 72. Column. Detailed Implementation
[0020] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.
[0021] This application discloses a pre-charged needle torsion bar feeding mechanism.
[0022] Reference Figure 1-5 The pre-charged needle torsion bar feeding mechanism includes a base plate 7, a hopper 1, a lifting conveyor belt 2, a material handling assembly 3, and a feeding conveyor belt 4. The base plate 7 is located on the ground. Several torsion bars 6 are installed inside the hopper 1. The bottom wall of the hopper 1 is inclined, and the lowest side of the bottom wall of the hopper 1 is close to the lifting conveyor belt 2, which facilitates the gathering of the torsion bars 6 between the hopper 1 and the lifting conveyor belt 2. The bottom wall of the hopper 1 is fixed to the base plate 7 by a vertical support plate 71. The lifting conveyor belt 2 is inclined, with its highest end being farther from the hopper 1 than its lowest end. The hopper 1 has an opening 11 on the side closest to the lifting conveyor belt 2. The belt body of the lifting conveyor belt 2 is in close contact with the opening 11 of the hopper 1. An upper step 21 is provided on the outer surface of the belt body of the lifting conveyor belt 2. The length direction of the step 21 is consistent with the width direction of the belt body of the lifting conveyor belt 2. Multiple steps 21 are equidistantly arranged along the circumference of the belt body of the lifting conveyor belt 2. The torsion bar 6 includes a rod body 61 and a limiting circular plate 62. The limiting circular plate 62 is coaxially connected to the top surface of the rod body 61. The diameter of the limiting circular plate 62 is larger than the diameter of the rod body 61. In this embodiment, the cross-section of the rod body 61 is "+" shaped, and the diameter of the rod body 61 is the diameter of the circumscribed circle of the cross-section of the rod body 61. When the step 21 passes through the opening 11 of the hopper 1, the limiting circular plate 62 of the torsion bar 6 hangs on the step 21.
[0023] A dust cover 12 is provided on the top surface of the silo 1. There is a clearance between the dust cover 12 and the lifting conveyor belt 2, which allows the step 21 and the torsion bar 6 on the step 21 to pass through. The dust cover 12 protects the silo 1 from dust, and the torsion bar 6 is not easily contaminated.
[0024] A dust cover 22 is installed on the lifting conveyor belt 2. The dust cover 22 covers the top and upper half of the lifting conveyor belt 2, and there is space between the inner wall of the dust cover 22 and the belt body of the feeding conveyor belt 4 so that the torsion bar 6 can pass through, thereby preventing dust from the hopper 1 and further ensuring that the torsion bar 6 is not easily contaminated.
[0025] The material handling assembly 3 is used to arrange the torsion bar 6 into a vertical state with the limiting circular plate 62 located on the top surface of the bar body 61. The feeding conveyor belt 4 is used to transport the torsion bar 6 to the next work station. A transition conveyor assembly is provided between the material handling assembly 3 and the feeding conveyor belt 4.
[0026] The material handling assembly 3 includes a receiving frame 31, a guide plate 32, and a material handling conveyor strip 33. The receiving frame 31 is located below the highest point of the feeding conveyor belt 4. The length direction of the receiving frame 31 is parallel to the width direction of the lifting conveyor belt 2, and the length of the receiving frame 31 is greater than the width of the lifting conveyor belt 2. The bottom wall of the receiving frame 31 is fixed to the base plate 7 by a column 72, and the height of the receiving frame 31 is higher than the height of the hopper 1.
[0027] The guide plate 32 includes a first plate 321 and a second plate 322. Both the first plate 321 and the second plate 322 are inclined. The first plate 321 is further away from the lifting conveyor belt 2 than the second plate 322. The bottom ends of the first plate 321 and the second plate 322 are close to each other.
[0028] The material handling conveyor 33 is located between the first plate 321 and the second plate 322. The material handling conveyor 33 includes an annular first conveyor 331 and a second conveyor 332. The first conveyor 331 and the second conveyor 332 are rotatably set by the rotating assembly 34 and rotate in opposite directions. The limiting circular plate 62 of the torsion bar 6 is hung on the two conveyor bars that are close to each other, the first conveyor 331 and the second conveyor 332. The bottom end of the first plate 321 abuts against the inner wall of the part of the first conveyor 331 that is close to the second conveyor 332, and the bottom end of the second plate 322 abuts against the inner wall of the part of the second conveyor 332 that is close to the first conveyor 331.
[0029] The lifting conveyor belt 2 lifts the torsion bar 6 hanging on the step 21 from the hopper 1 to the material handling conveyor 33 between the first plate 321 and the second plate 322.
[0030] The rotating assembly 34 includes a rotating motor 341, a first rotating shaft 342, a second rotating shaft 343, a first gear 344, and a second gear 345. The rotating motor 341 is fixed to the bottom wall of the receiving frame 31. Both the first rotating shaft 342 and the second rotating shaft 343 are rotatably connected to the receiving frame 31. A tensioning shaft 346 is provided at the end of the first conveyor bar 331 away from the first rotating shaft 342. The first rotating shaft 342 cooperates with the tensioning shaft 346 to tension the first conveyor bar 331. The second conveyor bar... A tensioning shaft 347 is provided at the end of the second conveyor bar 332 away from the rotating shaft 343. The rotating shaft 343 cooperates with the tensioning shaft 347 to tension the second conveyor bar 332. Both the tensioning shaft 346 and the tensioning shaft 347 are fixedly connected to the receiving frame 31. The output shaft of the rotating motor 341 passes through the receiving frame 31 and is coaxially connected to the rotating shaft 342. The gear 1 is coaxially connected to the rotating shaft 342, and the gear 2 is coaxially connected to the rotating shaft 343. The gear 1 and the gear 2 mesh. The rotating motor 341 drives the rotating shaft 342 to rotate, the rotating shaft 342 drives the first gear 344 to rotate, the first gear 344 drives the second gear 345 to rotate, and the second gear 345 drives the rotating shaft 343 to rotate. This causes the first conveyor bar 331 and the second conveyor bar 332 to rotate in opposite directions, and the rotation direction allows the torsion bar 6 to move from a position near the hopper 1 to a position near the feeding conveyor belt 4.
[0031] The material handling assembly 3 also includes a brush roller 35, which is rotatably connected to the side wall of the receiving frame 31 via a rotary motor 36. The output shaft of the rotary motor 36 passes through the receiving frame 31 and is coaxially connected to the brush roller 35. The periphery of the brush roller 35 contacts the material handling conveyor strip 33. The limiting circular plate 62 is hung on the two conveyor strips 331 and 332 that are close to each other, and the torsion bar 6 with the rod body 61 located between the first conveyor strip 331 and the second conveyor strip 332 is a torsion bar 6 with qualified conveying status. All other torsion bars 6 are torsion bars 6 with unqualified conveying status. When the brush roller 35 rotates, it pushes the torsion bars 6 with unqualified conveying status toward the direction closer to the hopper 1.
[0032] The feeding conveyor belt 4 is located below the receiving frame 31. The transition conveyor assembly includes two transition plates 5. The top of the two transition plates 5 is connected to the end of the feeding conveyor belt away from the hopper 1. The bottom of the two transition plates 5 extends above the feeding conveyor belt 4. The distance between the two transition plates 5 is less than the diameter of the limiting circular plate 62. The distance between the two transition plates 5 is greater than the diameter of the rod 61. The limiting circular plate 62 is hung on the two transition plates 5. The bottom of the transition plate 5 is provided with a horizontal section 51. The horizontal section 51 is provided with a discharge chute 511 for the limiting circular plate 62 to pass through. The discharge chute 511 is vertically opened and runs through the upper and lower surfaces of the horizontal section 51. The discharge chute 511 allows the torsion bar 6 to fall into the placement seat 41.
[0033] The feeding conveyor belt 4 is equipped with a placement seat 41. Multiple placement seats 41 are equidistantly arranged along the circumference of the feeding conveyor belt 4. During the rotation of the feeding conveyor belt 4, each placement seat 41 moves to the direct underside of the horizontal section 51.
[0034] A torsion bar 6 in a qualified conveying state can pass between the brush roller 35 and the material handling conveyor 33, and then move towards the feeding conveyor belt 4 under the drive of the material handling conveyor 33 to the transition plate 5. The torsion bar 6 descends along the transition plate 5 to the horizontal section 51 and falls from the unloading chute 511 into the corresponding placement seat 41. After the torsion bar 6 is received in the placement seat 41, the feeding conveyor belt 4 continues to rotate to the next empty placement seat 41 and moves to the bottom of the horizontal section 51.
[0035] The placement seat 41 includes a receiving tube 411 and a fixed seat 412. The outer peripheral wall of the receiving tube 411 is fixedly connected to the inner peripheral wall of the fixed seat 412. The inner diameter of the receiving tube 411 is larger than the diameter of the rod 61 and smaller than the diameter of the limiting circular plate 62. A clearance groove 413 is provided on the side wall of the receiving tube 411 for the claw of the mechanical gripper to pass through. The clearance groove 413 penetrates the top wall of the receiving tube 411 to facilitate subsequent gripping by the mechanical gripper.
[0036] A pressure sensor (not shown in the figure) is installed on the inner bottom wall of the receiving tube 411. After the torsion bar 6 is fully inserted into the receiving tube 411, it contacts the pressure sensor. The pressure sensor detects the pressure change and transmits the electrical signal to the power source control system of the feeding conveyor belt 4. The stroke of the feeding conveyor belt 4 for each rotation is set according to the distance between the two placement seats 41, so that after the torsion bar 6 is connected in the placement seat 41, the feeding conveyor belt 4 continues to rotate to the next empty placement seat 41 and moves to the horizontal section 51 directly below. The implementation of the above control system is a common technical means, so it will not be described in detail.
[0037] The implementation principle of a pre-charged needle torsion bar feeding mechanism in this application embodiment is as follows: When the lifting conveyor belt 2 is in operation, when the step 21 of the lifting conveyor belt 2 passes through the hopper 1, the torsion bar 6 inside the hopper 1 is hung on the step 21. The lifting conveyor belt 2 transports the torsion bar 6 hanging on the step 21 from the hopper 1 to the material handling conveyor bar 33 between the first plate 321 and the second plate 322. The torsion bar 6 with qualified conveying status can pass between the brush roller 35 and the material handling conveyor bar 33, and then move towards the loading conveyor belt 4 under the drive of the material handling conveyor bar 33 to the transition plate 5. The torsion bar 6 descends along the transition plate 5 to the horizontal section 51 and falls from the unloading chute 511 into the corresponding placement seat 41.
[0038] The lifting conveyor belt 2 lifts the torsion bar 6 from the hopper 1 to the material handling conveyor 33 in the receiving frame 31, and then through the transition plate 5 into the placement seat 41 to realize the automatic and efficient feeding of the torsion bar 6. It has a high degree of automation, saves time and labor, and has high feeding efficiency.
[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A pre-charged needle torsion bar feeding mechanism, characterized in that: The system includes a hopper, a lifting conveyor belt, a material handling assembly, and a feeding conveyor belt. The hopper contains several torsion bars. The lifting conveyor belt is inclined, with its highest point further from the hopper than its lowest point. An opening is provided on the side of the hopper closest to the lifting conveyor belt. The belt body of the lifting conveyor belt is tightly attached to the opening of the hopper. An upper step is provided on the outer surface of the belt body, with the length direction of the step aligned with the width direction of the belt body. Multiple steps are equidistantly arranged along the circumference of the belt body. Each torsion bar includes a rod body and a limiting circular plate. The limiting circular plate is coaxially connected to the top surface of the rod body, and its diameter is larger than the diameter of the rod body. When the step passes through the opening of the hopper, the limiting circular plate of the torsion bar hangs on the step. The material handling assembly is used to straighten the torsion bar into a vertical state with the limiting circular plate located on the top surface of the bar. The feeding conveyor belt is used to transport the torsion bar to the next work station. A transition conveyor assembly is provided between the material handling assembly and the feeding conveyor belt.
2. The pre-charged needle torsion bar feeding mechanism according to claim 1, characterized in that: The material handling assembly includes a receiving frame, a guide plate, and a material handling conveyor strip. The receiving frame is located below the highest point of the feeding conveyor belt. The length direction of the receiving frame is parallel to the width direction of the lifting conveyor belt, and the length of the receiving frame is greater than the width of the lifting conveyor belt. The guide plate includes a first plate and a second plate, both of which are inclined. The first plate is further away from the lifting conveyor belt than the second plate, and the bottom ends of the first plate and the second plate are close to each other. The material handling conveyor is located between the first plate and the second plate. The material handling conveyor includes a first conveyor and a second conveyor, which are rotatably arranged by a rotating assembly and rotate in opposite directions. The limiting circular plate of the torsion bar is hung on the two conveyor bars that are close to each other. The bottom end of the first plate abuts against the inner wall of the portion of the first conveyor that is close to the second conveyor, and the bottom end of the second plate abuts against the inner wall of the portion of the second conveyor that is close to the first conveyor.
3. The pre-charged needle torsion bar feeding mechanism according to claim 2, characterized in that: The rotating assembly includes a rotating motor, a first rotating shaft, a second rotating shaft, a first gear, and a second gear. The rotating motor is fixed to the bottom wall of the receiving frame. Both the first rotating shaft and the second rotating shaft are rotatably connected to the receiving frame. A tensioning shaft is provided at the end of the first conveyor bar away from the first rotating shaft, and the first rotating shaft cooperates with the tensioning shaft to tension the first conveyor bar. A tensioning shaft is provided at the end of the second conveyor bar away from the second rotating shaft, and the second rotating shaft cooperates with the tensioning shaft to tension the second conveyor bar. Both the first tensioning shaft and the second tensioning shaft are fixedly connected to the receiving frame. The output shaft of the rotating motor passes through the receiving frame and is coaxially connected to the rotating shaft. The gear is coaxially connected to the first rotating shaft, and the second gear is coaxially connected to the second rotating shaft. The first gear and the second gear mesh.
4. The pre-charged needle torsion bar feeding mechanism according to claim 2, characterized in that: The material handling assembly also includes a brush roller, which is rotatably connected to the side wall of the receiving frame via a rotary motor. The output shaft of the rotary motor passes through the receiving frame and is coaxially connected to the brush roller. The periphery of the brush roller contacts the material handling conveyor strip. The torsion bar with the limiting circular plate hanging on the first and second conveyor strips that are close to each other and whose rod body is located between the first and second conveyor strips is a torsion bar with a qualified conveying state. All other torsion bars are torsion bars with unqualified conveying states. When the brush roller rotates, it pushes the torsion bars with unqualified conveying states toward the direction closer to the hopper.
5. The pre-charged needle torsion bar feeding mechanism according to claim 2, characterized in that: The feeding conveyor belt is located below the receiving frame. The transition conveyor assembly includes two transition plates. The tops of the two transition plates are connected to the end of the feeding conveyor belt away from the hopper. The bottoms of the two transition plates extend above the feeding conveyor belt. The distance between the two transition plates is less than the diameter of the limiting circular plate and greater than the diameter of the rod. The limiting circular plate is hung on the two transition plates. A horizontal section is provided at the bottom of the transition plate. A discharge chute for the limiting circular plate to pass through is opened on the horizontal section. Placement seats are provided on the feeding conveyor belt. Multiple placement seats are equidistantly arranged along the circumference of the feeding conveyor belt. During the rotation of the feeding conveyor belt, each placement seat moves to the direct underside of the horizontal section. The torsion bar descends along the transition plate to the horizontal section and falls from the discharge chute into the corresponding placement seat. After the torsion bar is received in the placement seat, the feeding conveyor belt continues to rotate until the next empty placement seat moves to the direct underside of the horizontal section.
6. The pre-charged needle torsion bar feeding mechanism according to claim 5, characterized in that: The placement seat includes a receiving tube and a fixed seat. The outer peripheral wall of the receiving tube is fixedly connected to the inner peripheral wall of the fixed seat. The inner diameter of the receiving tube is larger than the diameter of the rod body and smaller than the diameter of the limiting circular plate. A clearance groove is provided on the side wall of the receiving tube for the claw of the mechanical gripper to pass through. The clearance groove penetrates the top wall of the receiving tube.
7. The pre-charged needle torsion bar feeding mechanism according to claim 1, characterized in that: A dust cover is provided on the top surface of the hopper, and there is a clearance between the dust cover and the lifting conveyor belt to allow the steps and torsion bars on the steps to pass through.
8. The pre-charged needle torsion bar feeding mechanism according to claim 1, characterized in that: The lifting conveyor belt is equipped with a dust cover, which covers the top and upper half of the lifting conveyor belt, and there is a space between the inner wall of the dust cover and the belt body of the feeding conveyor belt.