An automatic torsion assembly and bending machine for crown springs
By designing an automatic torsion assembly bending machine, and utilizing the coordinated work of the conveyor track, feeding mechanism, bending mechanism and torsion equipment, the problem of inconsistent efficiency of manual operation in crown spring processing was solved, realizing automated processing and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHANGJIAGANG UCHEN NEW ENERGY TECH CO LTD
- Filing Date
- 2023-10-30
- Publication Date
- 2026-06-30
Smart Images
Figure CN117463847B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of crown spring processing technology, and in particular to an automatic crown spring torsion assembly and bending machine. Background Technology
[0002] Crown springs, also known as crown springs, are a common type of connector terminal.
[0003] Figure 1 The basic structure of the crown spring is shown, which includes a spring sheet 7 and an inner tube 8. The spring sheet 7 is a fence-like structure formed by stitching together several metal strips after the elastic metal sheet is stamped and divided. In actual processing, the operator first inserts the spring sheet 7 into the inner tube 8, with both ends of the spring sheet 7 protruding from the outside of the inner tube 8. Then, the two ends of the spring sheet 7 are bent, and the spring sheet 7 is twisted around the inner tube 8 at a certain angle so that the bent part of the spring sheet 7 fits against the outer wall of the inner tube 8, ultimately forming a structure like... Figure 1 The finished crown spring shown.
[0004] Regarding the aforementioned technologies, the processing of crown springs involves a significant amount of manual intervention by operators. For example, manual pre-fitting of the inner tube and the spring sheet is required, and even bending and twisting operations can be performed manually. However, due to varying manual operation efficiency and the fatigue of operators after prolonged processing, efficiency will decrease, ultimately affecting the processing and production efficiency of crown springs. Summary of the Invention
[0005] To improve the processing efficiency of crown springs, this application provides an automatic crown spring torsion assembly and bending machine.
[0006] This application provides an automatic torsion assembly and bending machine for crown springs, which adopts the following technical solution:
[0007] An automatic twisting assembly and bending machine for crown springs includes a conveying track and a receiving mold that slides along the length of the conveying track. The conveying track is used to drive the receiving mold to slide along the length of the conveying track. It also includes a feeding mechanism, a bending mechanism, a twisting device, and a controller. The conveying mechanism, bending mechanism, and twisting device are all controlled by the controller, which controls the opening and closing of the conveying mechanism, the feeding mechanism, the bending mechanism, and the twisting device. The feeding mechanism, the bending mechanism, and the twisting device are all located on the sliding path of the receiving mold. The feeding mechanism is used to feed an inner tube and a spring sheet onto the receiving mold. The bending mechanism is used to press the spring sheet inserted into the inner tube so that the spring sheet bends towards the outer wall of the inner tube. The twisting device is used to twist the bent spring sheet inside the inner tube.
[0008] By adopting the above technical solution, the controller controls the conveying component to drive the receiving mold to move sequentially along the length of the conveying track to the feeding mechanism, bending mechanism, and torsion device. When moving to the feeding mechanism, the controller controls the feeding mechanism to deliver the inner tube and spring sheet to the receiving mold so that the spring sheet is inserted into the inner tube. When moving to the bending mechanism, the controller controls the bending mechanism to press the spring sheet so that the end of the spring sheet bends towards the outer wall of the inner tube, realizing automatic bending processing. When moving to the torsion device, the controller controls the torsion device to twist the bent spring sheet, thereby realizing automated processing of crown springs, reducing human intervention, and improving the production and processing efficiency of crown springs.
[0009] Preferably, the receiving mold has a receiving interface and a receiving boss. The diameter of the receiving interface is smaller than the inner diameter of the inner tube and larger than the outer diameter of the spring. The receiving boss allows the spring and the inner tube to be fitted together. The feeding mechanism is used to insert the spring into the receiving interface and place the inner tube near the receiving mold, so that the inner tube is fitted around the spring.
[0010] The bending mechanism includes a flipping component and a pressing component. The pressing component is used to press and bend the spring sheet at the receiving interface and / or the receiving boss. The flipping component is used to clamp the spring sheet and inner tube at the receiving interface, rotate the clamped spring sheet and inner tube 180°, and then insert them onto the receiving boss.
[0011] By adopting the above technical solution, when the feeding mechanism inserts the spring into the receiving interface and then the inner tube is sleeved around the spring, since the diameter of the receiving interface is smaller than the inner diameter of the inner tube and larger than the outer diameter of the spring, both ends of the spring will inevitably be exposed outside the inner tube. Since the two ends of the spring need to be bent during the production and processing of the crown spring, the pressing part can first bend the top of the spring at the receiving interface, and then the flipping part can pick up and place the spring with one end bent at the receiving interface to the receiving boss. During the picking and placing process, the spring and the inner tube are rotated 180° so that the unbent end of the spring is located above the receiving boss. Then the pressing part bends the top of the spring on the receiving boss, and finally the bending operation of both ends of the spring is achieved.
[0012] Preferably, the feeding mechanism includes a feeding track for conveying springs, a transition bar for inserting a single spring, a drive unit for driving a single spring to be sleeved on the transition bar and driving the transition bar to rotate, and a first robotic arm for clamping the springs on the transition bar onto the receiving mold.
[0013] By adopting the above technical solution, since adjacent springs generally move close together when the feeding track is conveying springs, it is not convenient for the first robot to grip a single spring. Therefore, this application specifically sets up a transition rod and a driving component. The transition rod is used to insert a single spring to separate adjacent springs on the feeding track. Then, the driving component rotates the spring on the transition rod away from the feeding track and to a position where it can be picked up by the first robot. The first robot then picks up and places the spring on the transition rod onto the receiving mold.
[0014] Preferably, the driving component includes a receiving plate, a first cylinder, a linkage rack, a linkage gear, and a limiting component; the driving end of the first cylinder is connected to the receiving plate, and the extension and retraction direction of the driving end of the first cylinder is perpendicular to the conveying direction of the spring sheet by the feeding track; the receiving plate is used to pass through the outlet of the feeding track during the movement driven by the first cylinder, so as to receive a single spring sheet discharged from the outlet of the feeding track.
[0015] The linkage rack is connected to the receiving plate, and the linkage gear is sleeved at the rotation center of the transition rod. The linkage rack is used to mesh with the linkage gear during the movement of the receiving plate. When the transition rod rotates to the moving direction of the receiving plate, the linkage rack disengages from the linkage gear. The limiting member is used to fix the rotation position of the transition rod.
[0016] By adopting the above technical solution, the first cylinder drives the receiving plate to move towards the transition rod, so that the receiving plate passes the discharge port of the feeding track during the movement, thereby receiving a spring, and continues to move towards the transition rod. During this movement, the linkage rack will mesh with the linkage gear, so that the transition rod will rotate towards the receiving plate. When it rotates to the direction of the receiving plate's movement, the rotation of the transition rod can be stopped by the limiting plate. At this time, the linkage rack disengages from the linkage gear, and the receiving plate continues to move towards the transition rod, so that the spring on the receiving plate is sleeved on the transition rod. Finally, the first cylinder drives the receiving plate to move in the opposite direction to reset. During this process, the linkage rack re-meets with the linkage gear. At this time, the rotation fixation of the transition rod is released by the limiting component, and the linkage gear will drive the transition rod to rotate away from the receiving plate, so that the first robot arm can pick up the spring on the transition rod.
[0017] Preferably, there can be two receiving plates, and during the start-up of the first cylinder, there is always one receiving plate connected to the material outlet of the feeding track. The transition rods are set one-to-one with the receiving plates, and the transition rods are located at one end of the corresponding receiving plate. That is, each end of the two ends of the moving direction of the receiving plate corresponds to a transition rod.
[0018] By adopting the above technical solution, two receiving plates can be set. When one receiving plate receives the spring from the feed track outlet and moves to one end under the drive of the first cylinder, the transition rod at the same end will be used to receive the spring on the receiving plate. At this time, the other receiving plate will move to the feed track outlet and receive a spring. When the driving end of the first cylinder moves to the other end, the receiving plate at the other end will, under the drive of the first cylinder, put the spring on the transition rod at the same end. This allows the receiving plates to alternately supply springs to both ends of the moving direction during the reciprocating movement, thereby improving the spring supply efficiency.
[0019] Preferably, the surface of the receiving plate is provided with a limiting groove that allows only a single spring to be inserted.
[0020] By adopting the above technical solution, the setting of the limiting groove can ensure that the receiving plate only receives a single spring sheet each time it passes through the feeding track. In addition, the setting of the limiting groove can also realize the stable receiving and conveying of the spring sheet by the receiving plate.
[0021] Preferably, the receiving plate is inclined downward at one end near the transition rod, and the extension and retraction direction of the first cylinder drive end and the length direction of the linkage rack are both parallel to the inclination direction of the receiving plate.
[0022] By adopting the above technical solution, the receiving plate is limited to an inclined setting, and as mentioned above: the transition rod can be rotated to the moving direction of the receiving plate, and when the transition rod is rotated to the moving direction of the receiving plate, the linkage rack just disengages from the linkage gear. At this time, the moving position of the transition rod can be fixed by the limiting component so that the transition rod is also in an inclined state. The advantage of this setting is that the spring on the receiving plate can slide down to the outside of the transition rod by itself under the action of its own weight and the inclined guiding action, so as to realize the separation of the receiving plate from the spring and reduce the situation that when the receiving plate moves in the opposite direction to reset, the spring will move in the opposite direction with the receiving plate and disengage from the transition rod again.
[0023] Preferably, the device also includes a correction component for clamping the spring sheet conveyed to the transition bar, such that the end of the spring sheet on the transition bar is positioned parallel to the length direction of the spring sheet.
[0024] By adopting the above technical solution, in order to reduce the situation where the spring is bent before subsequent pressing, thus preventing the inner tube from being fitted onto the outer periphery of the spring, this application specifically provides a correction component to clamp the end wall of the spring for straightening the end of the spring.
[0025] Preferably, a baffle is provided around the receiving plate, and the receiving plate and the baffle together form a receiving space for inserting a single spring. The correction component includes a baffle, a first elastic airbag, a second elastic airbag, and a push plate. The first elastic airbag is disposed on the side wall of the baffle and the receiving plate near the receiving space, and the second elastic airbag is disposed on the side wall of the baffle and the receiving plate away from the receiving space. The first elastic airbag and the second elastic airbag are interconnected and both are pre-stored with gas to inflate and deform them. The push plate is located on the moving path of the second elastic airbag as it moves with the receiving plate, so as to squeeze the second elastic airbag.
[0026] By adopting the above technical solution, when the baffle and the receiving plate move under the drive of the first cylinder, the extrusion plate will squeeze the second elastic airbag, so that some of the gas in the second elastic airbag flows into the first elastic airbag, thereby causing the second elastic airbag to squeeze the spring, so that the spring that was originally bent outward can be squeezed inward under the pressure of the second elastic airbag, achieving the effect of straightening the spring.
[0027] Preferably, the receiving plate is provided with a push plate at one end away from the transition rod. The correction assembly also includes a connecting rod at the end of the transition rod. The connecting rod is arranged along the length of the transition rod, and the outer diameter of the connecting rod gradually decreases in the direction away from the transition rod. The outer diameter of the transition rod is exactly consistent with the inner diameter of the unbent spring, and the part of the connecting rod with the smallest outer diameter can be inserted into the spring.
[0028] By adopting the above technical solution, the correction component of this application can not only correct the problem of the spring bending outward, but also correct the problem of the spring bending and shrinking towards the center through the docking rod and the transition rod. Specifically, it is first ensured that one end of the docking rod with the minimum outer diameter can be inserted into the spring (regardless of whether the spring is bending and shrinking towards the center at this time, one end of the docking rod with the minimum outer diameter can be inserted into the spring). Then, with the conveying of the receiving plate and the pushing action of the push plate on the spring, the spring is gradually fitted onto the docking rod and the transition rod. During this process, the gradually increasing outer diameter of the docking rod will straighten the spring that has the problem of bending and shrinking towards the center.
[0029] In summary, this application includes the following beneficial technical effects:
[0030] The controller controls the conveying assembly to drive the receiving mold to move sequentially along the length of the conveying track to the feeding mechanism, bending mechanism, and torsion device. When moving to the feeding mechanism, the controller controls the feeding mechanism to deliver the inner tube and spring sheet to the receiving mold, so that the spring sheet is inserted into the inner tube. When moving to the bending mechanism, the controller controls the bending mechanism to press the spring sheet so that the end of the spring sheet bends towards the outer wall of the inner tube, realizing automatic bending processing. When moving to the torsion device, the controller controls the torsion device to twist the bent spring sheet, thereby realizing automated processing of crown springs, reducing human intervention, and improving crown spring production efficiency. Attached Figure Description
[0031] Figure 1 This is a schematic diagram used in the background art to illustrate the crown spring structure.
[0032] Figure 2 This is a schematic diagram of the structure of an automatic torsion assembly and bending machine for crown springs, as shown in Embodiment 1 of this application.
[0033] Figure 3 This is a schematic diagram of the structure of the feeding mechanism in Embodiment 1 of this application.
[0034] Figure 4 This is a cross-sectional view of Embodiment 1 of this application, used to illustrate the structure of the feeding mechanism.
[0035] Figure 5 This is a schematic diagram illustrating the specific structure of the feeding mechanism in Embodiment 2 of this application.
[0036] Figure 6 This is a schematic diagram illustrating the structure of the limiting member in Embodiment 2 of this application.
[0037] Figure 7 yes Figure 6 Sectional view along the AA direction.
[0038] Figure 8 yes Figure 6 Sectional view along the BB direction.
[0039] Explanation of reference numerals in the attached drawings: 1. Conveyor track; 11. Correction assembly; 111. First elastic airbag; 112. Second elastic airbag; 113. Extrusion plate; 114. Connecting rod; 2. Receiving mold; 21. Receiving interface; 22. Receiving boss; 3. Feeding mechanism; 31. Vibrating screen plate; 32. Feeding pipe; 33. Feeding track; 331. First chamber; 332. Second chamber; 333. Unloading component; 34. Transition rod; 35. Driving component; 351. Drive motor; 352. First cylinder; 353. Receiving plate; 3531. Limiting groove; 354. Linkage rack; 355. Linkage gear; 356. Limiting component; 3561. Limiting rod; 3562. Limiting... Positioning plate; 357, baffle; 358, push plate; 36, first robot arm; 37, positioning sleeve; 38, positioning rod; 39, second cylinder; 4, bending mechanism; 41, pressing component; 411, third cylinder; 412, pressing rod; 413, second robot arm; 42, flipping component; 421, flipping motor; 422, third robot arm; 5, torsion device; 51, fifth robot arm; 52, fourth cylinder; 53, torsion rod; 54, torsion motor; 55, fourth robot arm; 6, controller; 7, spring; 8, inner tube; 9, weighing boss; 91, weighing sensor; 92, discharge channel; 93, sixth robot arm; 94, fifth cylinder; 95, receiving frame. Detailed Implementation
[0040] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.
[0041] This application provides an automatic torsion assembly and bending machine for crown springs, which is used to insert the spring 7 into the inner tube 8 and bend and torsion the two ends of the spring 7 so that the two ends of the spring 7 fit against the outer end wall of the inner tube 8, thereby forming a shape as shown in the image. Figure 1 The crown spring shown.
[0042] Example 1
[0043] Reference Figure 2 and Figure 3The automatic twisting assembly and bending machine for crown springs disclosed in Embodiment 1 of this application specifically includes a conveyor track 1, a receiving mold 2, a conveying assembly, a feeding mechanism 3, a bending mechanism 4, a twisting device 5, and a controller 6. The conveying assembly is used to convey the receiving mold 2 along the length direction of the conveyor track 1, and the conveying assembly can be a conveyor belt set on the conveyor track 1; the feeding mechanism 3, the bending mechanism 4, and the twisting device 5 are all located on the moving path of the receiving mold 2 and are arranged sequentially along the moving direction of the receiving mold 2. The feeding mechanism 3 supplies spring sheet 7 and inner tube 8 to the receiving mold 2, and during the supply process, the spring sheet 7 can be inserted into the inner tube 8 to achieve pre-fitting. The bending mechanism 4 is used to bend both ends of the spring sheet 7, and the twisting device 5 is used to twist the ends of the bent spring sheet 7. The conveying component, feeding mechanism 3, bending mechanism 4, and twisting device 5 are all controlled by the controller 6. The controller 6 can be a PLC controller. In order to facilitate the knowledge of the moving position of the receiving mold 2, sensors (such as through-beam photoelectric switches) that are electrically connected to the controller 6 can be set at the positions of the conveying track 1 near the feeding mechanism 3, bending mechanism 4, and twisting device 5. The controller 6 is used to control the opening and closing of the conveying component, feeding mechanism 3, bending mechanism 4, and twisting device 5 based on the moving position of the receiving mold 2.
[0044] Reference Figure 2 , Figure 3 and Figure 4 The feeding mechanism 3 includes a vibrating screen 31, a feeding pipe 32, a feeding track 33, a transition rod 34, a drive component 35, a first robotic arm 36, a positioning sleeve 37, a positioning rod 38, and two second cylinders 39. The vibrating screen 31 contains an inner tube 8. The outlet of the vibrating screen 31 is connected to the feeding channel 32. The other end of the feeding channel 32 is vertically downward and is equipped with a discharge component 333 for controlling the opening and closing of the bottom opening of the feeding channel 32. The discharge component 333 may specifically include a cylinder and a... The discharge plate at the end of the cylinder has a first chamber 331 and a second chamber 332 that are interconnected inside the feeding channel 32. The first chamber 331 and the second chamber 332 are connected, and the feeding channel 32 is connected to the first chamber 331. The second chamber 332 is connected to the bottom opening of the feeding channel 32. Only a single inner tube 8 can be inserted into the first chamber 331 and the second chamber 332. When the discharge plate is inserted into the first chamber 331, it can block the connection between the first chamber 331 and the feeding channel 32. The receiving mold 2 can be moved to be directly below the bottom opening of the feeding channel 32.
[0045] Reference Figure 3The feeding track 33 can specifically be a conveyor belt for conveying the spring 7; the transition rod 34 is rotatably connected to the outlet of the feeding track 33, and the side wall of the outlet of the feeding track 33 has a through hole through which the transition rod 34 can pass. The driving component 35 specifically includes a driving motor 351 and a first cylinder 352. The cylinder body of the first cylinder 352 is fixedly connected to the driving end of the driving motor 351, and the driving end of the first cylinder 352 is fixedly connected to the transition rod 34. The transition rod 34 can rotate under the drive of the driving cylinder, and after rotating to the point where the through hole is located in the length direction of the transition rod 34, the first cylinder 352 drives the transition rod 34 to pass through the through hole, thereby inserting it into the spring 7 located in the through hole. Then, the driving motor 351 can drive the transition rod 34 to reverse (the forward and reverse rotation angle of the transition rod 34 in Embodiment 1 of this application is 90°), and control the driving end of the first cylinder 352 to reset.
[0046] Reference Figure 3 and Figure 4 One of the second cylinders 39 has its drive end connected to the positioning sleeve 37, and the other second cylinder 39 has its drive end connected to the positioning rod 38, which is located directly above the positioning sleeve 37. The receiving mold 2 has a receiving interface 21 on its surface for inserting a single spring 7. The diameter of the receiving interface 21 is smaller than the inner diameter of the inner tube 8 but larger than the outer diameter of the spring 7. The inner diameter of the positioning sleeve 37 is larger than the outer diameter of the inner tube 8, and the outer diameter of the positioning rod 38 is smaller than the inner diameter of the spring 7. The receiving interface 21 of the receiving mold 2 can move with the receiving mold 2 to directly below the positioning sleeve 37. When the receiving interface 21 of the receiving mold 2 with inner tube 8 is located directly below the positioning sleeve 37, the controller 6 controls the second cylinder 39 connected to the positioning sleeve 37 to start, causing the positioning sleeve 37 to move down onto the receiving mold 2 and to fit around the inner tube 8. Then, the first manipulator 36 moves the spring 7 on the transition rod 34 and inserts it into the positioning sleeve 37. Finally, the controller controls the second cylinder 39 connected to the positioning rod 38 to start, so that the positioning rod 38 passes through the positioning sleeve 37 and the spring 7, realizing the sleeve positioning of the spring 7 and the inner tube 8.
[0047] Reference Figure 3 and Figure 4 The bending mechanism 4 includes two pressing members 41 and a flipping member 42 located between the two pressing members 41. Each pressing member 41 includes a third cylinder 411 and a pressing rod 412 disposed at the driving end of the third cylinder 411. The outer diameter of the end of the pressing rod 412 away from the corresponding fourth cylinder 52 gradually decreases in the direction away from the fourth cylinder 52. The part with the smallest outer diameter of the pressing rod 412 can be inserted into the unbent spring 7. As the pressing rod 412 gradually penetrates into the spring 7, the part with the largest outer diameter of the pressing rod 412 can press against the spring 7, so that the spring 7 bends outward in the state shown in the figure.
[0048] Reference Figure 3 and Figure 4 The receiving mold 2 also has an integrally formed receiving boss 22. The outer diameter of the receiving boss 22 gradually increases from high to low, and the part with the smallest outer diameter of the receiving boss 22 can be inserted into the spring 7. The flipping part 42 is used to rotate the spring 7 at the receiving interface 21, which has already completed the bending operation at one end, by 180° and then insert it into the receiving boss 22 so that the other pressing part 41 can bend the top of the spring 7 on the receiving boss 22, thereby finally realizing the bending treatment of both ends of the spring 7. The pressing part 41 used to bend the spring 7 on the receiving boss 22 also includes a second robot arm 413. The second robot arm 413 is used to pre-clamp the inner tube 8 when the pressing rod 412 of the corresponding pressing part 41 is inserted and presses the spring 7, so as to prevent the inner tube 8 from moving down with the pressing of the pressing rod 412. The flipping component 42 specifically includes a flipping motor 421 whose drive end is connected to a third robotic arm 422, which is used to grip or release the inner tube 8.
[0049] Reference Figure 3 and Figure 4 There can be two torsion devices 5, and a fourth manipulator 55 can be provided between the two torsion devices 5. Each torsion device 5 can specifically include a fifth manipulator 51, a fourth cylinder 52, a torsion rod 53, and a torsion motor 54. The fifth manipulator 51 is used to clamp the inner tube 8. The driving end of the fourth cylinder 52 is connected to the torsion motor 54, and the driving end of the torsion motor 54 is connected to the torsion rod 53. The end of the torsion rod 53 is provided with several protrusions. All the protrusions form a notch for inserting the spring 7. The receiving boss 22 of the receiving mold 2 can be moved to directly below each notch. The fourth cylinder 52 drives the torsion rod 53 to move down and causes the spring 7 to be inserted into the notch. During the insertion process, the bent end of the spring 7 is further pressed by the protrusion and bent to fit against the outer wall of the inner tube 8. Then, the torsion motor 54 is started to rotate the torsion rod 53 and the protrusion, thereby twisting the bent part of the spring 7 to achieve bending and twisting of one end of the spring 7. Then, when the receiving mold 2 moves to the fourth robot 55, the fourth robot 55 takes the inner tube 8 and the spring 7 on the receiving boss 22, rotates them 180° and puts them back on the receiving boss 22. When the receiving mold 2 moves to the next torsion device 5, the bending and twisting operation of the other end of the spring 7 is performed, finally forming the crown spring.
[0050] Reference Figure 3 and Figure 4The conveyor track 1 also includes a weighing boss 9 for mounting the crown spring. A weighing sensor 91 is located at the bottom of the weighing boss 9 to detect the total weight of the crown spring and the weighing boss 9. Two sixth robotic arms 93 are located above the weighing boss 9. One sixth robotic arm 93 is used to pick up the formed crown spring from the receiving mold 2 and mount it onto the weighing boss 9. The other sixth robotic arm 93 is used to place the crown spring from the weighing boss 9 into a preset discharge channel 92. The two sixth robotic arms 93 can be connected to a single cylinder drive. A fifth cylinder 94 and a receiving frame 95 are located at the discharge channel 92. The drive end of the fifth cylinder 94 is connected to the discharge channel 92. When the fifth cylinder 94 is not activated, the discharge channel 92 is located above the receiving frame 95.
[0051] Reference Figure 3 and Figure 4 The fifth cylinder 94 and the weighing sensor 91 are both electrically connected to the controller 6. When the weight data obtained by the controller 6 from the weighing sensor 91 is not up to standard, the controller can control the fifth cylinder 94 to start and drive the discharge channel 92 to move away from the receiving frame 95. At this time, the crown spring grasped by the sixth robot arm 93 will fall into the receiving frame 95. When the weight data obtained by the controller 6 from the weighing sensor 91 is up to standard, the fifth cylinder 94 will not start. At this time, the discharge track is located between the sixth robot arm 93 and the receiving frame 95, and the crown spring that meets the standard will fall into the discharge channel 92 and be discharged.
[0052] Example 2
[0053] The difference between Embodiment 2 and Embodiment 1 in this application is that: (Refer to...) Figure 5 , Figure 6 and Figure 7 The driving component 35 includes a receiving plate 353, a first cylinder 352, a linkage rack 354, a linkage gear 355, and a limiting component 356. Specifically, the limiting component 356 can be a limiting rod 3561 positioned at the rotation center of the transition rod 34, and a limiting plate 3562 positioned on the conveying track 1. The limiting plate 3562 is located on the rotation path of the limiting rod 3561 as the transition rod 34 rotates. The receiving plate 353 is slidably connected to one end of the discharge port of the feeding track 33, and the sliding direction of the receiving plate 353 is perpendicular to the conveying direction of the crown spring by the feeding track 33. The length direction of the crown spring within the feeding track 33 is parallel to the width direction of the feeding track 33.
[0054] Figure 6 , Figure 7 and Figure 8The cylinder body of the first cylinder 352 is connected below the conveying track 1, and the driving end of the first cylinder 352 is connected to the side wall of the receiving plate 353. The extension and retraction direction of the driving end of the first cylinder 352 is parallel to the length direction of the receiving plate 353. The first cylinder 352 is used to drive the receiving plate 353 to slide along the aforementioned sliding direction. The surface of the receiving plate 353 is provided with a limiting groove 3531 for inserting a single spring 7. The side wall of the receiving plate 353 is provided with a baffle 357, and a push plate 358 is provided at one end of the receiving plate 353 away from the transition material rod 34. The baffle 357, the push plate 358 and the receiving plate 353 together form a receiving space for inserting a single spring 7.
[0055] One end of the linkage rack 354 is connected to the side wall of the receiving plate 353, and the linkage rack 354 is parallel to the length direction of the receiving plate 353. The linkage gear 355 is fixedly sleeved on the rotation center of the transition rod 34. The linkage gear 355 is located on the sliding path of the linkage rack 354 for meshing with the linkage rack 354. In Embodiment 2 of this application, when the transition connecting rod is in a vertical state, the first manipulator 36 can just pick up the spring 7 on the transition rod. At this time, the linkage rack 354 and the linkage gear 355 mesh. When the first cylinder 352 is started, the receiving plate 353 moves towards the transition rod 34, and the linkage rack 354 drives the linkage gear. 355. The transition link and the limiting rod 3561 rotate toward the receiving plate 353. When the limiting rod 3561 rotates to fit against the upper surface of the limiting plate 3562, the transition link can no longer rotate. At this time, the linkage rack 354 just disengages from the linkage gear 355. At this time, there is still a certain gap between the receiving plate 353 and the transition link. At this time, the first cylinder 352 continues to drive the receiving plate 353 to move so that the spring 7 on the receiving plate 353 is sleeved on the transition link. When the driving end of the first cylinder 352 retracts, the receiving plate 353 moves in the opposite direction. When the linkage rack 354 re-meshes into the linkage gear 355, it drives the transition link to rotate back to the vertical state.
[0056] Furthermore, there can be two receiving plates 353, that is, two receiving plates 353 are symmetrically arranged at the drive end of the first cylinder 352. Each receiving plate 353 has a corresponding transition rod 34 at the end away from the feeding track. Thus, during the reciprocating extension and retraction of the first cylinder 352, the receiving plate 353 moves towards or away from the corresponding transition rod 34 to deliver the spring 7 to the corresponding transition rod 34 and so that the spring 7 is sleeved on the corresponding transition rod 34. During the reciprocating movement of the first cylinder 352, it is necessary to ensure that there is always any receiving plate 353 connected to the discharge port of the conveying track 1 so that the receiving plate 353 can receive the spring 7 on the discharge port of the conveying track 1.
[0057] Furthermore, the end of the receiving plate 353 near the transition rod 34 can be tilted downwards. Correspondingly, the first cylinder 352 will drive the receiving plate 353 to slide back and forth along the tilt direction. When the transition rod 34 rotates to be parallel to the sliding direction of the receiving plate 353, the transition rod 34 will also tilt. This tilt setting allows the spring 7 on the receiving plate 353 to be smoothly fitted onto the transition rod 34 under the guidance of the tilt.
[0058] In addition, refer to Figure 7 and Figure 8 It also includes a correction assembly 11, comprising a first elastic airbag 111, a second elastic airbag 112, a push plate 113, and a docking rod 114. The first elastic airbag 111 and the second elastic airbag 112 are connected. The first elastic airbag 111 is installed on the inner wall of the receiving space, and the second elastic airbag 112 is installed on the side wall of the baffle 357 and the receiving plate 353 away from the receiving space. Both the first elastic airbag 111 and the second elastic airbag 112 are pre-stored with gas (such as air) to inflate and form elastic deformation. The push plate 113 is located on the second elastic airbag 112 along with the receiving plate 357. 3. During the movement path, the second elastic airbag 112 is compressed, causing some of the gas inside the second elastic airbag 112 to enter the first elastic airbag 111. This causes the first elastic airbag 111 to further inflate. The inner diameter of the space enclosed by the further inflated first elastic airbag 111 is exactly equal to the outer diameter of the spring 7 before it bends outward. This further inflated first elastic airbag 111 presses against the side wall of the spring 7, causing the spring 7, which has already bent outward, to retract towards its center, thus straightening the spring 7, i.e., making the side wall of the spring 7 parallel to its length direction. The length of the extrusion plate 113 satisfies the following condition: when the transition rod 34 rotates to the length direction of the receiving plate 353, the extrusion plate 113 disengages from the second elastic airbag 112.
[0059] The connecting rod 114 is integrally formed at the end of the transition rod 34 and is set along the length of the transition rod 34. The outer diameter of the transition rod 34 is exactly the same as the inner diameter of the spring 7 when it is not bent. The outer diameter of the connecting rod 114 gradually decreases in the direction away from the transition rod 34. The part with the smallest outer diameter of the connecting rod 114 can be inserted into the spring 7 in any deformed state. The spring 7 in any deformed state mentioned here includes: the spring 7 with the side wall bent and folded towards the center of the spring 7. First, ensure that the part with the smallest outer diameter of the connecting rod 114 can be inserted into the spring 7. Then, as the receiving plate 353 moves and the pushing plate 358 pushes and limits the spring 7, the spring 7 is sleeved on the connecting rod 114 and the transition rod 34. During this process, the gradually increasing outer diameter of the connecting rod 114 will straighten the spring 7 that has the problem of bending and folding towards the center.
[0060] 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. An automatic torsion assembly and bending machine for crown springs, characterized in that: The system includes a conveyor track (1) and a receiving mold (2) that slides along the length of the conveyor track (1). The conveyor track (1) is equipped with a conveying component for driving the receiving mold (2) to slide along the length of the conveyor track (1). The system also includes a feeding mechanism (3), a bending mechanism (4), a torsion device (5), and a controller (6). The conveying component, the feeding mechanism (3), the bending mechanism (4), and the torsion device (5) are all controlled by the controller (6), which controls the conveying component and the feeding mechanism (3). The opening and closing of the bending mechanism (4) and the torsion device (5); the feeding mechanism (3), the bending mechanism (4) and the torsion device (5) are all located on the sliding path of the receiving mold (2). The feeding mechanism (3) is used to feed the inner tube (8) and the spring (7) onto the receiving mold (2). The bending mechanism (4) is used to press the spring (7) inserted into the inner tube (8) so that the spring (7) bends toward the outer wall of the inner tube (8). The torsion device (5) is used to twist the bent spring (7) inside the inner tube (8). The feeding mechanism (3) includes a feeding track (33) for conveying the spring (7), a transition rod (34) for inserting a single spring (7) into the spring, a drive member (35) for driving the single spring (7) to be sleeved on the transition rod (34) and driving the transition rod (34) to rotate, and a first robot (36) for clamping the spring (7) on the transition rod (34) onto the receiving mold (2); The driving component (35) includes a receiving plate (353), a first cylinder (352), a linkage rack (354), a linkage gear (355), and a limiting component (356); the driving end of the first cylinder (352) is connected to the receiving plate (353), and the extension and retraction direction of the driving end of the first cylinder (352) is perpendicular to the conveying direction of the feed rail (33) to the spring (7); the receiving plate (353) is used to pass through the outlet of the feed rail (33) during the movement driven by the first cylinder (352) to receive a single spring (7) discharged from the outlet of the feed rail (33); The linkage rack (354) is connected to the receiving plate (353), and the linkage gear (355) is sleeved on the rotation center of the transition rod (34). The linkage rack (354) is used to mesh with the linkage gear (355) during the movement of the receiving plate (353). When the transition rod (34) rotates to the moving direction of the receiving plate (353), the linkage rack (354) disengages from the linkage gear (355). The limiting member (356) is used to fix the rotation position of the transition rod (34). There are two receiving plates (353), and during the start-up process of the first cylinder (352), there is always one receiving plate (353) connected to the discharge port of the feeding track (33). The transition rod (34) is set one-to-one with the receiving plate (353), and the transition rod (34) is located at one end of the corresponding receiving plate (353). That is, each end of the two ends of the moving direction of the receiving plate (353) corresponds to a transition rod (34). It also includes a correction component (11) for clamping the spring (7) conveyed to the transition bar (34) so that the end of the spring (7) on the transition bar (34) is arranged parallel to the length direction of the spring (7); A baffle (357) is provided around the receiving plate (353), and the receiving plate (353) and the baffle (357) together form a receiving space for inserting a single spring (7); the correction component (11) includes a baffle (357), a first elastic airbag (111), a second elastic airbag (112), and a push plate (113), and the first elastic airbag (111) is disposed on the baffle (357) and the receiving plate (353) near the receiving space. On one side wall, the second elastic airbag (112) is disposed on the side wall opposite to the receiving space of the baffle (357) and the receiving plate (353). The first elastic airbag (111) and the second elastic airbag (112) are connected to each other and both are pre-stored with gas to inflate and deform them. The extrusion plate (113) is located on the moving path of the second elastic airbag (112) when it moves with the receiving plate (353) to squeeze the second elastic airbag (112).
2. The automatic torsion assembly and bending machine for crown springs according to claim 1, characterized in that: The receiving mold (2) is provided with a receiving interface (21) and a receiving boss (22). The diameter of the receiving interface (21) is smaller than the inner diameter of the inner tube (8) and larger than the outer diameter of the spring (7). The receiving boss (22) can accommodate the spring (7) and the inner tube (8). The feeding mechanism (3) is used to insert the spring (7) into the receiving interface (21), place the inner tube (8) on the receiving mold (2) near the receiving interface (21), and make the inner tube (8) fit around the spring (7). The bending mechanism (4) includes a flipping component (42) and a pressing component (41). The pressing component (41) is used to press and bend the spring sheet (7) at the receiving interface (21) and / or the receiving boss (22). The flipping component (42) is used to clamp the spring sheet (7) and the inner tube (8) at the receiving interface (21), and after rotating the clamped spring sheet (7) and the inner tube (8) 180°, it is inserted into the receiving boss (22).
3. The automatic torsion assembly and bending machine for crown springs according to claim 1, characterized in that: The surface of the receiving plate (353) is provided with a limiting groove (3531) that allows only a single spring (7) to be inserted.
4. The automatic torsion assembly and bending machine for crown springs according to claim 1, characterized in that: The receiving plate (353) is inclined downward at one end near the transition rod (34), and the extension and retraction direction of the drive end of the first cylinder (352) and the length direction of the linkage rack (354) are parallel to the inclination direction of the receiving plate (353).
5. The automatic torsion assembly and bending machine for crown springs according to claim 1, characterized in that: The receiving plate (353) is provided with a push plate (358) at one end away from the transition rod (34). The correction component (11) also includes a connecting rod (114) provided at the end of the transition rod (34). The connecting rod (114) is provided along the length direction of the transition rod (34), and the outer diameter of the connecting rod (114) gradually decreases in the direction away from the transition rod (34). The outer diameter of the transition rod (34) is exactly consistent with the inner diameter of the unbent spring (7), and the part at the minimum outer diameter of the connecting rod (114) can be inserted into the spring (7).