Spring automatic riveting and pressing assembly line and riveting and pressing process thereof

Abstract

This invention discloses an automatic spring riveting assembly line and its riveting process, relating to the field of spring manufacturing technology. It includes a riveting machine equipped with a pressure plate that moves vertically up and down, and further includes: a conveyor rail positioned below the riveting machine, with a support seat along its length for fixing a lower support; a support plate located on one side of the riveting machine, equipped with a rotating motor for driving its own rotation, and an annular groove adapted to the upper support at its upper end, with a vertically connected passageway communicating with the annular groove. The system includes: a clearance groove; a second support plate, located between the first support plate and the riveting machine, with a placement groove adapted to the upper support at its upper end, and a positioning block fixedly connected to the second support plate circumferentially along the placement groove, the positioning block having a locking groove; a sensing component, located on one side of the first support plate and directly opposite the clearance groove, the sensing component having a probe for sensing obstructions, triggering the sensing component when the probe senses an obstruction within its working range; and a transfer mechanism, located between the first support plate and the riveting machine, used to transport the upper support sequentially along the first support plate, the second support plate, and the carrier plate. This application facilitates the processing of spring workpieces with multiple springs.

Description

Technical Field

[0001] This invention relates to the field of spring manufacturing technology, and in particular to an automatic spring riveting assembly line and its riveting process. Background Technology

[0002] A spring is a mechanical component that operates using elasticity. After being deformed by an external force, it returns to its original shape when the force is removed. Springs have a wide range of applications, especially in the mechanical and industrial fields, such as vehicles, electrical equipment, instruments, and everyday consumer goods. In some applications, springs need to work in conjunction with other mechanical components, such as connecting a spring between two workpieces to achieve additional functions. Due to the special nature of spring materials, they are not easily connected to other workpieces by welding; therefore, riveting is often used when assembling spring components.

[0003] There are many types of spring workpieces, see reference. Figure 1 As shown in the figure, a spring workpiece includes a lower support 120, an upper support 110, and several spring members 130 connected between the upper support 110 and the lower support 120. The upper end of the lower support 120 is fixedly connected with a plurality of positioning posts 150 along the circumferential direction. One end of the spring member 130 is sleeved on the outside of the positioning post 150. The lower support 120 limits the spring member 130 through the positioning post 150. The upper support 110 is provided with a plurality of clamping plates 140 that correspond one-to-one with the positioning post 150 along the circumferential direction. The clamping plates 140 are integrally formed with the upper support 110 and bent downwards vertically. The clamping plates 140 are inserted into the end of the spring member 130 away from the positioning post 150 and riveted to the spring member 130.

[0004] Regarding the aforementioned technologies, when processing the workpiece, the spring components 130 need to be fitted one by one onto the positioning posts 150 of the lower support 120. Then, the upper support 110 is placed above the lower support 120, and the clamping plate 140 is aligned with the spring components 130. Next, the upper support 110 is pressed down onto the lower support 120 using a riveting device, causing the clamping plate to insert into the corresponding spring component 130, thus completing the riveting of the clamping plate 140 and the spring component 130. When riveting the spring component 130 and the clamping plate 140, it is necessary to ensure that the axes of the clamping plate 140 and the spring component 130 are aligned. Otherwise, when the riveting device presses down on the upper support 110, interference may easily occur between the clamping plate 140 and the spring component 130, affecting the smooth assembly of the workpiece. However, when the clamping plate 140 and spring component 130 in the workpiece are arranged densely, the difficulty of aligning the clamping plate 140 of the upper support 110 with the spring component 130 will also increase. Therefore, a riveting device is urgently needed to process the above-mentioned spring workpiece. Summary of the Invention

[0005] To facilitate the processing of the aforementioned spring workpieces, this application provides an automatic spring riveting assembly line and its riveting process.

[0006] In a first aspect, this application provides an automatic spring riveting assembly line, which adopts the following technical solution: An automatic spring riveting assembly line includes a riveting machine with a pressure plate that moves vertically. It also includes: a conveyor rail arranged laterally and passing directly below the pressure plate; a support seat on the conveyor rail that moves along the length of the rail; and a support plate at the upper end of the support seat for fixing a lower support. A second support plate is located on one side of the riveting machine, with a rotating motor at its lower end for driving its own rotation. The upper end of the second support plate has a circumferentially circumferentially formed an annular groove adapted to the upper support, and the outer circumference of the second support plate is vertically open. There is a clearance groove communicating with the annular groove; a second support plate, located between the first support plate and the riveting machine, with a placement groove adapted to the upper support at the upper end of the second support plate, and a positioning block fixedly connected to the second support plate around the placement groove, the positioning block having a slot; a sensing component, located on one side of the first support plate and facing the clearance groove, the sensing component having a probe for sensing obstructions, the sensing component being triggered when the probe senses an obstruction within the working range; a transfer mechanism, located between the first support plate and the riveting machine, used to transport the upper support sequentially along the first support plate, the second support plate, and the carrier plate.

[0007] By adopting the above technical solution, the lower support is placed above the bearing seat, and the lower support is positioned by the bearing plate. The spring components are then assembled one by one onto the fixed posts of the lower support. The bearing seat moves the lower support to below the riveting machine via a conveyor rail, aligning the lower support with the pressure plate. The upper support is then placed on support plate one, with support plate one limiting the upper support through an annular groove. At this point, some adjacent clamping plates of the upper support are located within clearance grooves. When any clamping plate is aligned with the sensing component, the sensing component is triggered; when the sensing component is aligned with the gap between any two adjacent clamping plates, the sensing component is not triggered. The support plate one is rotated by a rotating motor, thereby adjusting the position of the upper support until any clamping plate is aligned with the sensing component, triggering the sensing component. Then, the upper support is transferred from support plate one to support plate two via a transfer mechanism. When the upper support enters the placement groove and… When in contact with the inner wall of the placement slot, the card plate facing the sensing component is aligned with the card slot again. At this time, the second support plate performs secondary positioning of the upper support through the positioning block. Then, when the upper support is moved to the top of the bearing plate by the transfer mechanism, all the card plates of the upper support are in the position facing the corresponding spring. The upper support is placed above the lower support, so that the card plates are initially inserted into the corresponding spring. The riveting machine is operated to rivet the upper support and the spring through the pressure plate, thereby completing the riveting process of the workpiece. The secondary positioning of the upper support during the processing of the workpiece helps to improve the convenience of assembling the upper support.

[0008] Optionally, the transfer mechanism includes a support frame, a horizontal frame, a vertical frame, a first gripper, and a second gripper. The support frame is located on the same side of the first and second support plates. The horizontal frame is slidably connected to the support frame in the transverse direction. The support frame is equipped with a first cylinder for moving the horizontal frame. The vertical frame is located on the side of the horizontal frame away from the support frame and is slidably connected to the horizontal frame in the vertical direction. The horizontal frame is equipped with a second cylinder for moving the vertical frame. The vertical frame is located above the first and second support plates. The first and second grippers are used to clamp the upper support and are arranged along the length of the vertical frame, moving with the vertical frame.

[0009] By adopting the above technical solution, the support frame provides support for the horizontal and vertical frames. When the horizontal frame moves under the action of cylinder one, the vertical frame drives the gripper one and gripper two to move laterally. In turn, the gripper one and gripper two drive the upper support to move from support plate one to support plate two and from support plate two to the lower support. Cylinder two drives the vertical frame to move vertically, thereby causing the gripper one and gripper two to rise and fall, thus achieving the clamping and releasing of the upper support.

[0010] Optionally, a material storage assembly is also included. The material storage assembly includes a fixed frame, a turntable, a transfer motor, and several sets of limiting rods. The fixed frame is located on the side of the support plate away from the riveting machine. The turntable is horizontally set at the upper end of the fixed frame and rotatably connected to the fixed frame. The transfer motor is fixed at the lower end of the fixed frame and is used to drive the turntable to rotate. Several sets of limiting rods are evenly arranged above the turntable and move with the turntable. In the same set of limiting rods, there are no less than three limiting rods and they are evenly distributed along the circumference. The same set of limiting rods is slidably connected to the same lifting plate in the vertical direction. The lifting plate is used to support the upper support. The end of the vertical frame away from the riveting machine is also provided with a clamping claw three. The vertical frame is provided with a cylinder three for driving the clamping claw three to move vertically. When the turntable rotates, it drives all the lifting plates to pass directly under the clamping claw three in sequence.

[0011] By adopting the above technical solution, multiple upper supports are placed on the lifting plate. At this time, multiple limit rods in the same group cooperate to limit the lateral displacement of the upper supports. Under the support of the fixed frame, when the transfer motor drives the turntable to rotate, the turntable drives the upper supports to move through the limit rods and the lifting plate. When any lifting plate moves to below the gripper three, the cylinder three cooperates with the gripper three to clamp and pick up the upper support supported by the lifting plate. Then, through the lateral movement of the vertical frame, it is convenient to place the upper support above the support plate one through the gripper three, thereby realizing the automatic feeding of the upper support and improving the convenience of placing the upper support.

[0012] Optionally, the storage assembly further includes a lifting rod located directly below the three grippers and slidably connected to the fixed frame vertically. The fixed frame is equipped with an electric cylinder for driving the lifting rod to rise and fall. The turntable has several clearance openings adapted to the lifting rod, located directly below the lifting plate and facing the lifting plate.

[0013] By adopting the above technical solution, in the initial state, the lifting rod is located below the turntable, thus avoiding the turntable. When any lifting plate moves to below the gripper three, the lifting rod is driven to move upward by the electric cylinder. After the lifting rod passes through the avoidance opening, it contacts the lifting plate. Under the guidance of the limit rod, the lifting plate drives all the upper supports to move closer to the gripper three, thus facilitating the gripper three to clamp the upper supports close to the lifting plate.

[0014] Optionally, the upper end of the pressure plate is provided with several moving rods, which are evenly arranged around the circumference of the pressure plate and all moving rods are perpendicular to the axis of the pressure plate. The pressure plate is provided with a driving component for moving all moving rods closer to or away from the axis of the pressure plate. A vertical plate slides vertically at the end of the moving rod away from the axis of the pressure plate. A first insert plate is fixedly connected laterally at the end of the vertical plate closer to the conveyor track. A positioning plate is slidably connected vertically at the side of the vertical plate closer to the pressure plate. A second insert plate is provided at the end of the positioning plate away from the vertical plate. A limiting port adapted to the upper support is provided between the second insert plate and the positioning plate. The second insert plate is arranged parallel to the positioning plate. An elastic element is provided between the positioning plate and the vertical plate. When the positioning plate moves along the vertical plate, the elastic element is used to reset the positioning plate.

[0015] By adopting the above technical solution, in the initial state, all vertical plates are located away from the pressure plate. When the pressure plate contacts the upper support, the driving component drives all the moving rods to move, causing the moving rods to move the vertical plates closer to the pressure plate. When the vertical plates move, they also move the first insert plate and the positioning plate. When the vertical plates move to their maximum displacement, the first insert plate is inserted into the gap at the lower end of the spring component. At this time, the positioning plate drives the second insert plate to be inserted into the gap at the upper end of the same spring component. The upper support is located between the positioning plate and the second insert plate. At this time, the pressure plate presses down on the upper support, causing the upper support to... The movable clamping plate is inserted into the spring component and riveted to it. When the upper support moves, it drives the second inserting plate and the positioning plate to move. At this time, the elastic component deforms, so that the second inserting plate applies an upward force to the spring component, which helps to improve the cooperation effect between the spring component and the clamping plate. After the riveting is completed, the upper support is reset under the action of the spring component. At this time, the vertical plate limits the lower end of the spring component through the second inserting plate, thereby improving the connection stability between the spring component and the fixed column. After the riveting is completed, the vertical plate is moved away from the pressure plate by the driving component, thereby separating the first inserting plate and the second inserting plate from the spring component.

[0016] Optionally, the driving component includes a guide plate and a drive motor. The upper end of the pressure plate is provided with several grooves corresponding to the moving rods. The moving rods are located in the corresponding grooves and are slidably connected to the pressure plate along the length of the grooves. The guide plate is located above all the moving rods and is rotatably connected to the pressure plate on the same axis. The drive motor is fixedly connected to the pressure plate and is used to drive the guide plate to rotate. The guide plate has several guide grooves opened in the circumferential direction. The guide grooves are spirally arranged in the direction of the outer circle of the guide plate pointing to the axis. The upper end of the moving rod is fixedly connected to a guide post. The guide post is located in the corresponding guide groove and is slidably connected to the guide plate.

[0017] By adopting the above technical solution, under the limiting action of the slide groove, when the drive motor drives the guide disk to rotate, the guide disk drives all the moving rods to move through the cooperation of the guide groove and the guide post, and then the movement of the moving rods is controlled by manipulating the rotation direction of the guide disk.

[0018] Optionally, the end of the positioning plate away from the pressure plate passes through the vertical plate and extends away from the pressure plate. All positioning plates are provided with the same positioning ring on their outer side. The positioning plate passes through the positioning ring and is slidably connected to the positioning ring. An electromagnetic block is provided at the upper end of the vertical plate. An adsorption block corresponding to the electromagnetic block is provided at the upper end of the positioning ring. When the electromagnetic block is working, it attracts the adsorption block.

[0019] By adopting the above technical solution, in the initial state, the vertical plate attracts the adsorption block through the electromagnetic block, thereby limiting the positioning ring and all positioning plates. The positioning ring connects all positioning plates and the vertical plate. When any spring fails to reset after riveting due to deformation or other reasons, the reset of its corresponding insert plate is also restricted. At this time, all elastic elements and spring elements cooperate to apply external force to the corresponding positioning plate and insert plate through the positioning ring, so that the insert plate drives the spring to reset, thereby facilitating the correction of springs that have not reset in time.

[0020] Secondly, this application provides a riveting process for use in an automatic spring riveting assembly line, comprising the following steps: Preparation 1: Place the lower support on the bearing seat and position the lower support using the bearing plate; Pre-assembly 1: Install the springs sequentially on the outside of the positioning pins of the lower support; Conveying: Move the support along the conveyor track so that the lower support moves directly below the pressure plate; Preparation 2: Place the upper support on the support plate 1, detect the posture of the upper support through the sensing component, and adjust the upper support by rotating the motor; Pre-assembly 2: When any card plate is aligned with the sensing component, the upper support is transferred from support plate 1 to support plate 2 by the transfer mechanism, and the upper support is repositioned by the positioning block and the card slot. Then, the repositioned upper support is transferred to the upper support and the card plate is initially inserted into the corresponding spring. Riveting: The riveting machine drives the pressure plate to press down, so that the pressure plate pushes the clamping plate of the upper support to rivet with the corresponding spring.

[0021] 1. Place the lower support above the bearing seat and position it using the bearing plate. Assemble the spring components one by one onto the fixed posts of the lower support. Move the lower support, driven by the bearing seat, to the bottom of the riveting machine via the conveyor rail, ensuring the lower support is aligned with the pressure plate. Then, place the upper support on support plate one, allowing support plate one to limit the upper support through the annular groove. At this point, some adjacent clamping plates of the upper support are located within the clearance groove. When any clamping plate is aligned with the sensing component, the sensing component is triggered; when the sensing component is aligned with the gap between any two adjacent clamping plates, the sensing component is not triggered. Rotate the motor to drive support plate one, thereby adjusting the position of the upper support until any clamping plate is aligned with the sensing component, triggering the sensing component. Then, transfer the upper support from support plate one to support plate two via the transfer mechanism. When the upper support enters the placement... When the slot is in contact with the inner wall of the slot, the card plate facing the sensing component is aligned with the slot again. At this time, the second support plate performs secondary positioning of the upper support through the positioning block. Then, when the upper support is moved to the upper bearing plate by the transfer mechanism, all the card plates of the upper support are in the position facing the corresponding spring. The upper support is placed above the lower support, so that the card plates are initially inserted into the corresponding springs. The riveting machine is operated to rivet the upper support and the spring through the pressure plate, thereby completing the riveting process of the workpiece. The secondary positioning of the upper support during the processing of the workpiece is beneficial to improving the convenience of assembling the upper support. 2. Initially, all vertical plates are positioned away from the pressure plate. When the pressure plate contacts the upper support, the driving component moves all the moving rods, causing the moving rods to bring the vertical plates closer to the pressure plate. As the vertical plates move, they also move the first insert plate and the positioning plate. When the vertical plates reach their maximum displacement, the first insert plate is inserted into the gap at the lower end of the spring. At this time, the positioning plate causes the second insert plate to be inserted into the gap at the upper end of the same spring. The upper support is located between the positioning plate and the second insert plate. The pressure plate then presses down on the upper support, causing the upper support to move the locking plate. Inserted into the spring and riveted to it, the upper support moves, causing the second insert plate and the positioning plate to move. At this time, the elastic element deforms, so that the second insert plate applies an upward force to the spring, which helps to improve the cooperation effect between the spring and the clamping plate. After the riveting is completed, the upper support is reset under the action of the spring. At this time, the vertical plate limits the lower end of the spring through the second insert plate, thereby improving the connection stability between the spring and the fixed column. After the riveting is completed, the vertical plate is moved away from the pressure plate by the driving component, thereby causing the first insert plate and the second insert plate to separate from the spring. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the specific structure of the spring workpiece.

[0023] Figure 2This is a schematic diagram of the overall structure of Example 1.

[0024] Figure 3 This is a schematic diagram designed to highlight the structure of the transfer mechanism.

[0025] Figure 4 This is a schematic diagram designed to highlight the structure of support plate one and support plate two.

[0026] Figure 5 This is a schematic diagram of the overall structure of Example 2.

[0027] Figure 6 This is a schematic diagram designed to highlight the moving rod and vertical plate structure.

[0028] Explanation of reference numerals in the attached drawings: 1. Riveting machine; 11. Pressure plate; 111. Slide groove; 2. Conveyor track; 21. Bearing seat; 211. Bearing plate; 31. Support plate one; 311. Rotary motor; 312. Annular groove; 313. Clearance groove; 32. Support plate two; 321. Placement groove; 322. Positioning block; 323. Slot; 4. Sensing component; 41. Sensor one; 42. Sensor two; 5. Transfer mechanism; 51. Support frame; 511. Cylinder one; 52. Horizontal frame; 521. Cylinder two; 53. Vertical frame; 54. Gripper one; 55. Gripper two; 56. Gripper three; 5 7. Cylinder 3; 6. Material storage assembly; 61. Fixing frame; 62. Turntable; 621. Lifting plate; 63. Transfer motor; 64. Limiting rod; 65. Lifting rod; 66. Electric cylinder; 71. Moving rod; 711. Guide post; 72. Vertical plate; 73. Insert plate 1; 74. Positioning plate; 75. Insert plate 2; 76. Elastic component; 77. Positioning ring; 771. Adsorption block; 78. Magnetic block; 8. Driving component; 81. Guide plate; 811. Guide groove; 82. Drive motor; 110. Upper support; 120. Lower support; 130. Spring component; 140. Clamping plate; 150. Positioning post. Detailed Implementation

[0029] The present application will be further described in detail below with reference to all the accompanying drawings.

[0030] This application discloses an automatic spring riveting assembly line and its riveting process.

[0031] Example 1: Reference Figure 1 and Figure 2 An automatic spring riveting assembly line includes a riveting machine 1. A conveyor rail 2 is laterally arranged at the lower end of the riveting machine 1. The riveting machine 1 is equipped with a pressure plate 11 and a hydraulic cylinder for moving the pressure plate 11 closer to or away from the conveyor rail 2. A support seat 21 is slidably connected to the conveyor rail 2 along its length. A support plate 211 is arranged above the support seat 21. When the support seat 21 moves, it drives the support plate 211 to move.

[0032] Reference Figure 1 and Figure 2 For workpieces requiring riveting, all positioning pins 150 of the lower support 120 have through holes, which penetrate the lower support 120. The upper end of the bearing plate 211 has positioning pins adapted to the through holes. There are at least two positioning pins. When the lower support 120 is placed on the bearing plate 211, both positioning pins are inserted into the corresponding through holes and contact the inner wall of the through holes. The bearing plate 211 positions the lower support 120 using the positioning pins, so that the lower support 120 moves when the bearing plate 21 moves. Spring members 130 are fitted one by one onto the outside of the fixed pins, completing the pre-assembly of the lower support 120 and the spring members 130. The lower support 120 is transported to directly below the pressure plate 11 via the bearing plate 21, so that the spring members 130 are directly opposite the pressure plate 11.

[0033] Reference Figure 2 and Figure 3 The system also includes a first support plate 31 and a second support plate 32. A mounting frame is provided on one side of the riveting machine 1. Both the first support plate 31 and the second support plate 32 are located above the mounting frame and are in the same vertical plane as the pressure plate 11. The first support plate 31 is located at the end of the mounting frame away from the riveting machine 1 and is rotatably connected to the mounting frame. The second support plate 32 is located between the first support plate 31 and the riveting machine 1, and the axis of the first support plate 31 is parallel to the axis of the second support plate 32. A rotary motor 311 is fixedly mounted on the mounting frame. The output shaft of the rotary motor 311 is coaxially connected to the first support plate 31. When the rotary motor 311 is working, it drives the first support plate 31 to rotate.

[0034] Reference Figure 2 and Figure 4 The riveting machine 1 is also equipped with a transfer mechanism 5 on one side. The transfer mechanism 5 includes a support frame 51, a horizontal frame 52, a vertical frame 53, a first clamp 54, and a second clamp 55. The support frame 51 is fixed vertically above the mounting frame and is located on the same side of the first support plate 31 and the second support plate 32. The horizontal frame 52 is slidably connected to the support frame 51 in the transverse direction. The support frame 51 is equipped with a first cylinder 511 for driving the horizontal frame 52 to move. When the first cylinder 511 is working, it drives the horizontal frame 52 to move along the support frame 51, and the movement trajectory of the horizontal frame 52 is parallel to the line connecting the first support plate 31 and the second support plate 32.

[0035] Reference Figure 2 and Figure 4The vertical frame 53 is slidably connected to the side of the horizontal frame 52 opposite to the support frame 51. The horizontal frame 52 is equipped with a second cylinder 521 for driving the vertical frame 53 to move. The vertical frame 53 is horizontally positioned, and the horizontal frame 52 moves synchronously with the vertical frame 53. Grippers 1 54 and 2 55 are arranged along the length of the vertical frame 53, with gripper 1 54 located on the side of gripper 2 55 furthest from the riveting machine 1. The vertical frame 53 moves synchronously with grippers 1 54 and 2 55. Grippers 1 54, gripper 2 55, support plate 1 31, and support plate 2 32 are all located in the same vertical plane. It should be noted that grippers 1 54 and 2 55 both employ commonly used mechanical gripper mechanisms in this field, which will not be elaborated upon here.

[0036] Reference Figure 2 and Figure 4 A material storage assembly 6 is also provided at the end of the mounting frame away from the riveting machine 1. The material storage assembly 6 includes a fixed frame 61, a turntable 62, a transfer motor 63, and several sets of limiting rods 64. The fixed frame 61 is fixedly connected to the end of the mounting frame away from the riveting machine 1, and the turntable 62 is rotatably connected to the upper end of the fixed frame 61 in a horizontal direction. The transfer motor 63 is installed between the fixed frame 61 and the turntable 62 to drive the turntable 62 to rotate. Multiple sets of limiting rods 64 are arranged circumferentially along the turntable 62 and move with the rotation of the turntable 62. In the same set of limiting rods 64, the number of limiting rods 64 is not less than three. This embodiment uses three limiting rods 64 as an example for explanation.

[0037] Reference Figure 2 and Figure 3 Three limiting rods 64 are arranged in a circle. A fixed plate is provided on the turntable 62 to support the limiting rods 64. When the turntable 62 moves, it drives all the limiting rods 64 to move via the fixed plate. A lifting plate 621 is provided above the fixed plate. The three limiting rods 64 in the same group all pass through the same lifting plate 621 and are slidably connected to it. Under the action of the limiting rods 64, the movement of the turntable 62 drives all the lifting plates 621 to move.

[0038] Reference Figure 2 and Figure 3 Multiple upper supports 110 are stacked above all the lifting plates 621. Three limiting rods 64 of the same group cooperate to limit the upper supports 110. The upper supports 110 have a ring structure. Therefore, when stacking the upper supports 110, they can be sleeved on the outside of the corresponding group of limiting rods 64, or they can be placed between the three limiting rods 64. The limiting rods 64 abut against the upper supports 110, thus making the stacked upper supports 110 coaxial. Under the action of the lifting plates 621 and the limiting rods 64, the rotation of the turntable 62 drives all the stacked upper supports 110 to move.

[0039] Reference Figure 2 and Figure 3The vertical frame 53 has a gripper 56 at the end furthest from the riveting machine 1, and a cylinder 57 is installed to drive the gripper 56 to move vertically. The gripper 56, gripper 54, and gripper 55 are located in the same vertical plane. When the turntable 62 rotates, the lifting plate 621 passes directly below the gripper 56. When any lifting plate 621 is directly below the gripper 56, the turntable 62 stops rotating. At this time, the cylinder 57 drives the gripper 56 to move towards the upper support 110 above the lifting plate 621, and the gripper 56 clamps the uppermost upper support 110.

[0040] Reference Figure 2 and Figure 3 Furthermore, the storage assembly 6 also includes a lifting rod 65, which is located directly below the gripper 56. The fixing frame 61 has a clearance opening adapted to the lifting rod 65, through which the lifting rod 65 passes and is vertically positioned. The fixing frame 61 is equipped with an electric cylinder 66 for driving the lifting rod 65 to move vertically. The electric cylinder 66 can be a pneumatic cylinder, a hydraulic cylinder, or a motor-screw mechanism. In this embodiment, the electric cylinder 66 is preferably a guide rail pneumatic cylinder.

[0041] Reference Figure 2 and Figure 3 Both the turntable 62 and the fixed plate have vertical clearance openings. When any lifting plate 621 is directly below the gripper 56, the clearance opening below the corresponding lifting plate 621 is directly opposite the lifting rod 65. At this time, the electric cylinder 66 drives the lifting rod 65 to move upward, so that the lifting rod 65 passes through the clearance opening and comes into contact with the lifting plate 621, thus pushing the lifting plate 621 upward. When the lifting plate 621 moves, it drives all the upper supports 110 above to move, thereby pushing the upper supports 110 to actively approach the gripper 56, which helps to improve the convenience of the gripper 56 in separating the upper supports 110 from the limit rod 64.

[0042] Reference Figure 2 and Figure 4 After gripper 3 56 clamps onto upper support 110, cylinder 1 511 drives horizontal frame 52 and vertical frame 53 to move laterally, causing gripper 3 56 to move upper support 110 directly above support plate 1 31. At this time, cylinders 2 521 and 3 57 drive gripper 3 56 to approach support plate 1 31. Support plate 1 31 has an annular groove 312 circumferentially formed on its outer side, which is adapted to fit upper support 110. Gripper 3 56 places upper support 110 within the annular groove 312, and support plate 1 31 restricts the lateral displacement of upper support 110 through the sidewall of the annular groove 312.

[0043] Reference Figure 2 and Figure 4The support plate 31 has a clearance groove 313 on the side near the outer circle. The clearance groove 313 communicates with the annular groove 312. When the upper support 110 is located in the annular groove 312, part of the adjacent card plate 140 is located in the clearance groove 313. The mounting frame is also provided with a sensing component 4, which includes multiple sensors. For ease of explanation, in this embodiment, the sensing component 4 has two sensors, which are respectively designated as sensor 1 41 and sensor 2 42.

[0044] Reference Figure 2 and Figure 4 Sensor 41 is located at the lower end of support plate 31 and faces the clearance groove 313. Sensor 41 has a probe at its upper end for sensing obstructions within the clearance groove 313. Sensor 41 is triggered when the probe detects no obstruction within its working range. Sensor 42 is arranged laterally and has the same probe as described above. The probe of sensor 42 also faces the clearance groove 313. Sensor 42 is triggered when its probe detects an obstruction within its working range.

[0045] Reference Figure 2 and Figure 4 When any one of the clamping plates 140 in the clearance slot 313 is directly opposite the probe of sensor 2 42, sensor 2 42 is triggered. At this time, the probe of sensor 1 41 is between two adjacent clamping plates 140, and there are no obstructions within the detection range of sensor 1 41. At this time, sensor 1 41 is triggered, and the upper support 110 is in the appropriate position. When all the clamping plates 140 in the clearance slot 313 are not directly opposite sensor 2 42, the rotating motor 311 is operated to drive the support plate 1 31 to rotate, thereby adjusting the upper support 110. When both sensor 1 41 and sensor 2 42 are triggered, the support plate 1 31 is stopped. At this time, supported by the vertical frame 53 and the horizontal frame 52, the upper support 110, which has completed the initial positioning, is taken out from the annular groove 312 by the gripper 1 54.

[0046] Reference Figure 2 and Figure 4 The second support plate 32 has a circumferentially circumferentially formed placement groove 321 adapted to the upper support 110, and a positioning block 322 is provided in the placement groove 321. The positioning block 322 is fixedly connected to the second support plate 32. The positioning block 322 has a vertically formed slot 323 adapted to the clamping plate 140. The upper support 110, which has completed its initial positioning, is placed in the placement groove 321 by the gripper 54. At this time, the clamping plate 140, which triggers the sensor, is inserted into the slot 323 and fits against the inner wall of the slot 323. The second support plate 32 further limits the upper support 110 through the slot 323, thereby improving the positioning accuracy of the upper support 110.

[0047] Reference Figure 1 and Figure 2 The upper support 110 is moved below the pressure plate 11 by the gripper 2 55. At this time, the upper support 110 and the lower support 120 are directly opposite each other and pass through the slot 323 (see reference). Figure 4 The positioning clamping plate 140 and the spring member 130 are directly opposite each other. When the gripper three 56 places the upper support 110 above the lower support 120, the clamping plate 140 of the upper support 110 is initially inserted into the corresponding spring member 130. After the gripper three 56 moves out from under the pressure plate 11, the pressure plate 11 is manipulated to move downward, thereby completing the riveting of all the clamping plates 140 of the upper support 110 with the corresponding spring members 130. During processing, the upper support 110 undergoes secondary positioning, reducing the probability of segregation between the clamping plate 140 and the spring member 130, thus improving the convenience of riveting.

[0048] The implementation principle of Example 1 is as follows: When the upper support 110 is placed in the annular groove 312 of the support plate 1 31, the sensor 1 41 and the sensor 2 42 cooperate to detect the upper support 110. When any card plate 140 is in the appropriate position, the upper support 110 is moved from the support plate 1 31 to the support plate 2 32 by the gripper 1 54, and the upper support 110 is further positioned by the placement groove 321 and the card slot 323, so that the card plate 140 that triggers the sensor 2 42 and the corresponding spring member 130 are in the same vertical plane. At this time, the upper support 110 is translated by the gripper 3 56, so that the upper support 110 is aligned with the lower support 120, and the card plate 140 is initially inserted into the corresponding spring member 130. Then, the pressure plate 11 is pressed down, so that all the card plates 140 of the upper support 110 are engaged with the corresponding spring member 130, which makes it more convenient to rivet the upper support 110.

[0049] Example 2: Reference Figure 5 and Figure 6 The difference between this embodiment and embodiment 1 is that the structure of the pressure plate 11 is different. In this embodiment, multiple movable rods 71 ​​are arranged circumferentially at the upper end of the pressure plate 11. The number of movable rods 71 ​​is set according to the number of clamping plates 140 of the upper support 110. The movable rods 71 ​​correspond one-to-one with the clamping plates 140. The movable rods 71 ​​are arranged perpendicular to the axis of the pressure plate 11. Multiple sliding grooves 111 adapted to the movable rods 71 ​​are opened along the diameter direction of the pressure plate 11. All movable rods 71 ​​are located in the corresponding sliding grooves 111 and are slidably connected to the pressure plate 11 in the direction of the length of the sliding grooves 111, either close to or away from the axis of the pressure plate 11.

[0050] Reference Figure 5 and Figure 6The pressure plate 11 is equipped with a driving component 8, which includes a drive motor 82 and a guide plate 81. The guide plate 81 is located above all the moving rods 71 ​​and is coaxially rotatably connected to the pressure plate 11. The drive motor 82 is mounted above the pressure plate 11 and is used to drive the guide plate 81 to rotate. The guide plate 81 has multiple guide grooves 811 on its side near the moving rods 71, and these grooves are evenly distributed around the circumference of the guide plate 81. The guide grooves 811 are spirally arranged along the axis of the guide plate 81 in a direction pointing outwards.

[0051] Reference Figure 5 and Figure 6 A guide post 711 is fixed to the upper end of the moving rod 71. The guide post 711 is inserted into the corresponding guide groove 811 and fits against the inner wall of the guide groove 811. When the drive motor 82 drives the guide disk 81 to rotate, under the limiting action of the sliding groove 111 on the moving rod 71, the guide disk 81 pushes the guide post 711 to move through the action of the inner wall of the guide groove 811, thereby causing the guide post 711 to drive the moving rod 71 to move through the sliding groove 111.

[0052] Reference Figure 5 and Figure 6 A vertical plate 72 is vertically installed at the end of the moving rod 71 away from the pressure plate 11. The vertical plate 72 is slidably connected to the moving rod 71 along its own length. When the moving rod 71 moves, it drives the vertical plate 72 to move. A return spring is provided between the vertical plate 72 and the moving rod 71. One end of the return spring is fixedly connected to the moving rod 71, and the other end is fixedly connected to the vertical plate 72. In the natural state of the return spring, the vertical plate 72 extends from the moving rod 71 toward the direction close to the conveyor track 2.

[0053] Reference Figure 5 and Figure 6 In the initial state, all vertical plates 72 are located at the end away from the pressure plate 11. When riveting the workpiece, after the pressure plate 11 contacts the upper support 110, the drive motor 82 drives the guide plate 81 to rotate, so that the guide plate 81 drives all the moving rods 71 ​​to move along the slide groove 111 towards the axis of the pressure plate 11. Then, the moving rods 71 ​​drive the vertical plates 72 to approach the upper support 110 and the lower support 120.

[0054] Reference Figure 5 and Figure 6A vertical insert plate 73 is fixed to the lower end of the vertical plate 72. The insert plate 73 extends towards the pressure plate 11. When the vertical plate 72 moves, it drives the insert plate 73 to move as well. When the pressure plate 11 contacts the upper support 110, the insert plate 73 is directly opposite the fixed post on the lower support 120. The vertical plate 72 is provided with a positioning plate 74. The vertical plate 72 has a movable groove along its length that matches the positioning plate 74. The end of the positioning plate 74 away from the pressure plate 11 passes through the movable groove and extends away from the pressure plate 11. The vertical plate 72 limits and guides the positioning plate 74 through the movable groove, allowing the positioning plate 74 to move along the length of the vertical plate 72. An elastic element 76, which is a spring, is provided between the positioning plate 74 and the vertical plate 72 to position the positioning plate 74.

[0055] Reference Figure 5 and Figure 6 All positioning plates 74 have the same positioning ring 77 on their outer sides. The positioning plates 74 pass through the positioning ring 77 along their length and are slidably connected to the positioning ring 77. The positioning ring 77 connects all the positioning plates 74, thereby enabling the positioning plates 74 to move synchronously. An electromagnetic block is provided on the side of the vertical plate 72 away from the pressure plate 11. The electromagnetic block generates magnetic force when it is working. The positioning ring 77 has an adsorption block 771 adapted to the electromagnetic block. The adsorption block 771 is a stainless steel metal block or other magnetic material. When the electromagnetic block is working, it attracts the adsorption block 771, thereby fixing the positioning ring 77 and positioning all the positioning plates 74 in their initial state through the positioning ring 77.

[0056] Reference Figure 5 and Figure 6 A parallel insert plate 75 is fixedly connected to the lower end of the positioning plate 74. A limiting opening is provided between the positioning plate 74 and the insert plate 75, and the height of the limiting opening is greater than the height of the upper support 110. In the initial state, the insert plate 75 is directly opposite the clamping plate 140 of the upper support 110. The driving component 8 continues to drive the vertical plate 72 closer to the pressure plate 11, thereby causing the insert plate 73 and the insert plate 75 to contact the spring component 130, and both the insert plate 73 and the insert plate 75 are inserted into the gap of the spring component 130.

[0057] The implementation principle of Example 2 is as follows: When the upper support 110 needs to be riveted, the electromagnetic block stops attracting the positioning ring 77. At this time, the pressure plate 11 moves downward. When the upper support 110 moves, it causes all the springs 130 to deform and pushes the second insert plate 75 closer to the first insert plate 73. At this time, the return spring and the elastic element 76 both deform. After the riveting is completed, the pressure plate 11 moves upward. At this time, the upper support 110 returns to its original position under the action of the springs 130. When the springs 130 return to their original position, the first insert plate 73 applies a downward thrust to the lower end of the springs 130, which helps to improve the connection stability between the springs 130 and the positioning post 150. Insert plate 2 75 applies a force close to the upper support 110 to spring component 130, which helps to improve the assembly effect of spring component 130 and clamping plate 140. When any spring component 130 fails to reset due to deformation or misalignment with clamping plate 140, the reset of insert plate 2 75 is also resisted by spring component 130. At this time, insert plate 2 75 drives spring component 130 to reset and corrects the deviation of spring component 130, which helps to improve the riveting qualification rate of spring component 130 and improve the riveting quality.

[0058] This application also discloses a riveting process using an automatic spring riveting assembly line. It includes the following steps: Preparation 1: Place the lower support 120 on the bearing seat 21 and position the lower support 120 using the bearing plate 211; Pre-assembly 1: The spring component 130 is sequentially fitted onto the outside of the positioning post 150 of the lower support 120; Conveying: Move the support seat 21 along the conveyor track 2 so that the lower support 120 moves directly below the pressure plate 11; Preparation 2: Place the upper support 110 on the support plate 31, detect the attitude of the upper support 110 through the sensor, and adjust the upper support 110 by rotating the motor 311. Pre-assembly 2: When any card plate 140 is facing the sensor, the upper support 110 is transferred from support plate 1 31 to support plate 2 32 by the transfer mechanism 5, and the upper support 110 is repositioned by the positioning block 322 and the card slot 323. Then, the repositioned upper support 110 is transferred to the upper support 120 and the card plate 140 is initially inserted into the corresponding spring member 130. Riveting: The riveting machine 1 drives the pressure plate 11 to press down, so that the pressure plate 11 pushes the clamping plate 140 of the upper support 110 to rivet with the corresponding spring 130.

[0059] 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 spring riveting assembly line, comprising a riveting machine (1), the riveting machine (1) being provided with a pressure plate (11) that moves vertically up and down, characterized in that, Also includes: The conveyor track (2) is arranged in a horizontal direction and passes directly below the pressure plate (11). The conveyor track (2) is provided with a support seat (21). The support seat (21) moves along the length of the conveyor track (2). The upper end of the support seat (21) is provided with a support plate (211) for fixing the lower support (120). Support plate one (31) is located on one side of the riveting machine (1). The lower end of support plate one (31) is provided with a rotating motor (311) for driving its own rotation. The upper end of support plate one (31) is provided with an annular groove (312) adapted to the upper support (110) along the circumferential direction. The outer circle of support plate two (32) is provided with a clearance groove (313) communicating with the annular groove (312) along the vertical direction. Support plate two (32) is located between support plate one (31) and riveting machine (1). The upper end of support plate two (32) is provided with a placement groove (321) that is compatible with the upper support (110). Support plate two (32) is fixedly connected with positioning block (322) around the placement groove (321). Positioning block (322) is provided with slot (323). The sensing component (4) is located on one side of the support plate (31) and faces the clearance groove (313). The sensing component (4) is equipped with a probe for sensing obstructions. When the probe senses an obstruction within the working range, the sensing component (4) is triggered. The transfer mechanism (5) is located between the support plate one (31) and the riveting machine (1) and is used to transport the upper support (110) sequentially along the support plate one (31), the support plate two (32) and the bearing plate (211); For workpieces that need to be riveted, springs (130) are sequentially sleeved on the outside of the positioning pins (150) of the lower support (120). All positioning pins (150) of the lower support (120) are provided with through holes, which penetrate the lower support (120). The upper end of the bearing plate (211) is provided with positioning pins that are adapted to the through holes. There are at least two positioning pins. When the lower support (120) is placed on the bearing plate (211), both positioning pins are inserted into the corresponding through holes and contact the inner wall of the through holes. The bearing plate (211) positions the lower support (120) through the positioning pins, so that when the bearing seat (21) moves, it drives the lower support (120) to move.

2. The automatic spring riveting assembly line according to claim 1, characterized in that: The transfer mechanism (5) includes a support frame (51), a horizontal frame (52), a vertical frame (53), a first gripper (54), and a second gripper (55). The support frame (51) is located on the same side of the first support plate (31) and the second support plate (32). The horizontal frame (52) is slidably connected to the support frame (51) in the transverse direction. The support frame (51) is equipped with a first cylinder (511) for moving the horizontal frame (52). The vertical frame (53) is located on the horizontal frame (51). 52) The side away from the support frame (51) and slidably connected to the horizontal frame (52) in the vertical direction. The horizontal frame (52) is provided with a cylinder two (521) for driving the vertical frame (53) to move. The vertical frame (53) is located above the support plate one (31) and the support plate two (32). The gripper one (54) and gripper two (55) are used to grip the upper support (110) and are set along the length of the vertical frame (53) and move with the vertical frame (53).

3. The automatic spring riveting assembly line according to claim 2, characterized in that: It also includes a storage assembly (6), which includes a fixed frame (61), a turntable (62), a transfer motor (63), and several sets of limiting rods (64). The fixed frame (61) is located on the side of the support plate (31) away from the riveting machine (1). The turntable (62) is horizontally set on the upper end of the fixed frame (61) and is rotatably connected to the fixed frame (61). The transfer motor (63) is fixed on the lower end of the fixed frame (61) and is used to drive the turntable (62) to rotate. Several sets of limiting rods (64) are evenly arranged above the turntable (62) and move with the turntable (62). The movement is as follows: in the same set of limit rods (64), there are no less than three limit rods (64) and they are evenly distributed along the circumference. The same set of limit rods (64) are slidably connected to the same lifting plate (621) in the vertical direction. The lifting plate (621) is used to support the upper support (110). The end of the vertical frame (53) away from the riveting machine (1) is also provided with a three-jaw gripper (56). The vertical frame (53) is provided with a three-cylinder (57) for driving the three-jaw gripper (56) to move vertically. When the turntable (62) rotates, it drives all the lifting plates (621) to pass under the three-jaw gripper (56) in sequence.

4. The automatic spring riveting assembly line according to claim 3, characterized in that: The storage assembly (6) also includes a lifting rod (65), which is located directly below the gripper and is slidably connected to the fixed frame (61) in the vertical direction. The fixed frame (61) is fixed with an electric cylinder (66) for driving the lifting rod (65) to rise and fall. The turntable (62) has several clearance openings adapted to the lifting rod (65), which are located directly below the lifting plate (621) and opposite to the lifting plate (621).

5. The automatic spring riveting assembly line according to claim 1, characterized in that: The upper end of the pressure plate (11) is provided with several moving rods (71), which are evenly arranged around the circumference of the pressure plate (11). All moving rods (71) are perpendicular to the axis of the pressure plate (11). The pressure plate (11) is provided with a driving component (8) for driving all moving rods (71) to move closer to or away from the axis of the pressure plate (11). A vertical plate (72) slides vertically at the end of the moving rod (71) away from the axis of the pressure plate (11). An insert plate (73) is fixedly connected laterally to the end of the vertical plate (72) that is closer to the conveying track (2). A positioning plate (74) is vertically slidably connected to the side of the plate (72) near the pressure plate (11). The end of the positioning plate (74) away from the vertical plate (72) is provided with a second insert plate (75). A limiting port adapted to the upper support (110) is provided between the second insert plate (75) and the positioning plate (74). The second insert plate (75) is arranged parallel to the positioning plate (74). An elastic element (76) is provided between the positioning plate (74) and the vertical plate (72). When the positioning plate (74) moves along the vertical plate (72), the elastic element (76) is used to reset the positioning plate (74).

6. The automatic spring riveting assembly line according to claim 5, characterized in that: The driving component (8) includes a guide plate (81) and a drive motor (82). The upper end of the pressure plate (11) is provided with several sliding grooves (111) corresponding to the moving rods (71). The moving rods (71) are located in the corresponding sliding grooves (111) and are slidably connected to the pressure plate (11) along the length of the sliding grooves (111). The guide plate (81) is located above all the moving rods (71) and is rotatably connected to the pressure plate (11) on the same axis. The drive motor (82) is fixedly connected to the pressure plate (11) and is used to drive the guide plate (81) to rotate. The guide plate (81) has several guide grooves (811) opened in the circumferential direction. The guide grooves (811) are spirally arranged in the direction of the outer circle of the guide plate (81) pointing to the axis. The upper end of the moving rods (71) is fixedly connected with guide posts (711). The guide posts (711) are located in the corresponding guide grooves (811) and are slidably connected to the guide plate (81).

7. The automatic spring riveting assembly line according to claim 5, characterized in that: The end of the positioning plate (74) away from the pressure plate (11) passes through the vertical plate (72) and extends away from the pressure plate (11). All positioning plates (74) have the same positioning ring (77) on their outer side. The positioning plate (74) passes through the positioning ring (77) and is slidably connected to the positioning ring (77). The upper end of the vertical plate (72) is provided with an electromagnetic block. The upper end of the positioning ring (77) is provided with an adsorption block (771) corresponding to the electromagnetic block. When the electromagnetic block is working, it attracts the adsorption block (771).

8. A riveting process, applied to an automatic riveting assembly line for springs as described in any one of claims 1-7, characterized in that: Includes the following steps: Preparation 1: Place the lower support (120) on the bearing seat (21) and position the lower support (120) using the bearing plate (211); Pre-assembly 1: The spring components (130) are sequentially fitted onto the outside of the positioning post (150) of the lower support (120); Conveying: Move the support seat (21) along the conveyor track (2) so that the lower support (120) moves directly below the pressure plate (11); Preparation 2: Place the upper support (110) on the support plate 1 (31), detect the attitude of the upper support (110) through the sensing component (4), and adjust the upper support (110) by rotating the motor (311); Pre-assembly 2: When any card plate (140) is aligned with the sensing component (4), the upper support (110) is transferred from the first support plate (31) to the second support plate (32) by the transfer mechanism (5), and the upper support (110) is repositioned by the positioning block (322) and the card slot (323). Then the repositioned upper support (110) is transferred to the upper support (120) and the card plate (140) is initially inserted into the corresponding spring (130). Riveting: The riveting machine (1) drives the pressure plate (11) to press down, so that the pressure plate (11) pushes the clamping plate (140) of the upper support (110) to rivet with the corresponding spring (130).

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