Bushing press-fitting equipment for plate spring machining

Abstract

The invention relates to the field of plate spring processing, in particular to bushing press-fitting equipment for plate spring processing, which comprises a mounting table, a placement seat arranged on the upper side of the left part of the mounting table, a fixed vertical plate arranged on the upper side of the left part of the mounting table, and a baffle plate arranged between the placement seat and the fixed vertical plate, a pressing mechanism is arranged on the upper side of the right portion of the mounting table, and a pressing mechanism is arranged on the upper side of the left portion of the mounting table. Through buffering of the first spring and self-adaptive centering design of the press-fitting column, initial impact is eliminated, coaxial force application is ensured, a mechanically-linked positioning mechanism forcibly positions the plate spring accurately, an anti-deviation mechanism is pressed into a flexible guide bush at the tail section to prevent inclination, the problems of displacement, deviation and damage are thoroughly solved through precise cooperation of multiple mechanisms, and the production efficiency is improved. And the press-fitting coaxiality and the qualified rate of finished products are obviously improved.

Description

Technical Field

[0001] The invention relates to the field of leaf spring processing, and in particular to a bushing press-fitting device for leaf spring processing. Background Art

[0002] In leaf spring production, the bushing press-fitting process generally relies on manual operation or simple equipment, and there are significant pain points. Unstable clamping during manual press-fitting can easily cause the leaf spring to displace or rebound, resulting in an offset in the bushing pressing trajectory. The press-fitting process lacks adaptive buffering. Excessive rigid impact can easily damage the leaf spring surface coating or the bushing mouth. The bushing at the end of press-fitting is prone to slight tilt, affecting assembly accuracy. The initial positioning of the leaf spring relies on the worker's experience, with low efficiency and poor consistency. The fixture needs to be frequently adjusted during operation to adapt to leaf springs of different specifications, seriously affecting production efficiency and assembly quality stability.

[0003] Therefore, a bushing press-fitting device for leaf spring processing is now developed in response to the above problems. Summary of the Invention

[0004] In order to overcome the shortcomings of the existing devices, the present invention provides a bushing press-fitting device for leaf spring processing.

[0005] The technical solution of the present invention is: a bushing pressing device for leaf spring processing, comprising a mounting table, a placing seat is provided on the upper left side of the mounting table, a fixed vertical plate is provided on the upper left side of the mounting table, the fixed vertical plate is located on the right side of the placing seat, a baffle is provided between the placing seat and the fixed vertical plate, a pressing mechanism is provided on the upper right side of the mounting table, the pressing mechanism is used to press the bushing into the leaf spring, and a clamping mechanism is provided on the upper left side of the mounting table, the clamping mechanism is used to clamp and limit the leaf spring.

[0006] Furthermore, the pressing mechanism includes a first hydraulic cylinder, which is arranged on the upper right side of the mounting platform. A push plate is arranged on the telescopic end of the first hydraulic cylinder, and a pressing column is slidably connected to the push plate. The pressing column is used to push the bushing for installation, and a first spring is arranged between the pressing column and the push plate.

[0007] Furthermore, the clamping mechanism includes a first mounting bracket, which is arranged on the upper left side of the mounting platform, a second hydraulic cylinder is installed on the upper inner side of the first mounting bracket, and a first pressure plate is connected to the telescopic end of the second hydraulic cylinder. The bottom of the first pressure plate is a soft structure to avoid damage to the leaf spring and to clamp and limit the leaf spring.

[0008] Furthermore, a positioning mechanism is included, which includes a first rack rack, the first rack rack is arranged on the press-fitting column, a second mounting rack is arranged on the rear side of the placement seat, a gear is rotatably connected to the second mounting rack, a positioning rod is slidably connected to the placement seat, the positioning rod is used to position the leaf spring, a second rack rack is arranged on the positioning rod, and the second rack rack and the first rack rack are both engaged with the gear.

[0009] Furthermore, an anti-deflection mechanism is included, which includes a mounting seat. The mounting seat is provided on the right side of the fixed vertical plate. A pressure frame is rotatably connected to the mounting seat. The pressure frame is used to press and position the bushing. Two torsion springs are connected between the pressure frame and the mounting seat.

[0010] Furthermore, it also includes a close-fitting mechanism, which includes a connecting plate, the connecting plate is arranged on the first pressure plate, and a second pressure plate is slidably arranged on the connecting plate. The second pressure plate is used to push the leaf spring that is not fully in place so that the rear side of the leaf spring can fit with the baffle, and a second spring is arranged between the second pressure plate and the connecting plate.

[0011] Furthermore, it also includes a material guiding mechanism, which includes a fixed plate, the fixed plate is provided on the upper right side of the fixed vertical plate, and a material guiding plate is provided on the upper right side of the fixed vertical plate. The material guiding plate is used to guide the release of the bushing. The material guiding plate is an inclined structure and is located in front of the fixed plate. A mounting column is provided between the fixed plate and the fixed vertical plate.

[0012] Furthermore, it also includes an adjustment mechanism, which includes a contact plate. The contact plate is slidably connected to the fixed vertical plate. The position of the contact plate can be adjusted to adapt to leaf springs of different specifications. A threaded rod is rotatably connected to the mounting platform, and the threaded rod is threadedly connected to the contact plate.

[0013] Furthermore, the right portion of the fixed vertical plate is provided with an arc-shaped recessed plate for placing the bushing.

[0014] Furthermore, the baffle is an L-shaped structure, and the baffle is used to block the leaf spring.

[0015] By adopting the above technical solution, the advantages of the present invention are: 1. The present invention eliminates the initial impact and ensures coaxial force application through the first spring buffer and the press-fitting column adaptive centering design. The mechanical linkage positioning mechanism forces the leaf spring to be precisely positioned, and the anti-deflection mechanism prevents the flexible guide bushing from tilting at the end of the press-fitting. The precise coordination of multiple mechanisms completely solves the problems of displacement, deflection and damage, and significantly improves the press-fitting coaxiality and the qualified rate of finished products.

[0016] 2. The present invention uses a clamping mechanism to automatically push the flat spring to the baffle reference during the downward pressing process, eliminating the need for manual leveling. The material guiding mechanism realizes automatic directional conveying of the bushing. The adjustment mechanism can quickly adapt to different leaf spring specifications, reducing changeover time. The equipment has a high degree of integration and reliable automated action, which greatly improves production rhythm, reduces manual intervention, reduces labor and rework costs and equipment failure rate, and extends the life of core components. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0018] Figure 2 It is a schematic diagram of a first partial cross-sectional three-dimensional structure of the press-fitting mechanism of the present invention.

[0019] Figure 3 This is a schematic diagram of a second partial cross-sectional three-dimensional structure of the press-fitting mechanism of the present invention.

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the pressing mechanism of the present invention.

[0021] Figure 5 It is a partial cross-sectional three-dimensional structural diagram of the positioning mechanism of the present invention.

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the anti-deflection mechanism of the present invention.

[0023] Figure 7 It is a schematic diagram of the three-dimensional structure of the clinging mechanism of the present invention.

[0024] Figure 8 It is a schematic diagram of the three-dimensional structure of the material guiding mechanism of the present invention.

[0025] Figure 9 It is a partial cross-sectional three-dimensional structural schematic diagram of the adjustment mechanism of the present invention.

[0026] Explanation of the accompanying drawings: 1-mounting table, 2-placing seat, 3-fixed vertical plate, 4-baffle, 5-pressing mechanism, 51-first hydraulic cylinder, 52-pressing column, 53-first spring, 54-push plate, 6-pressing mechanism, 61-first mounting frame, 62-second hydraulic cylinder, 63-first pressure plate, 7-positioning mechanism, 71-first rack rack, 72-second mounting frame, 73-gear, 74-second rack rack, 75-positioning rod, 8-anti-deflection mechanism, 81-mounting seat, 82-pressing frame, 83-torsion spring, 9-closing mechanism, 91-connecting plate, 92-second pressure plate, 93-second spring, 10-material guiding mechanism, 101-fixed plate, 102-material guiding plate, 103-mounting column, 11-adjusting mechanism, 111-contact plate, 112-threaded rod. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the accompanying drawings and examples.

[0028] Example 1 A bushing press-fitting device for leaf spring processing, such as Figures 1-9 As shown, it includes a mounting platform 1, a placing seat 2 is provided on the upper left side of the mounting platform 1, a fixed vertical plate 3 is provided on the upper left side of the mounting platform 1, and the right side of the fixed vertical plate 3 has an arc-shaped recessed plate for placing the bushing, the fixed vertical plate 3 is located on the right side of the placing seat 2, and a baffle 4 is provided between the placing seat 2 and the fixed vertical plate 3. The baffle 4 is an L-shaped structure, and the baffle 4 is used to block the leaf spring. A pressing mechanism 5 is provided on the upper right side of the mounting platform 1, and the pressing mechanism 5 is used to press the bushing into the leaf spring. A clamping mechanism 6 is provided on the upper left side of the mounting platform 1, and the clamping mechanism 6 is used to clamp and limit the leaf spring.

[0029] It should be noted that the operator places the leaf spring to be processed on the placement seat 2 on the upper left side of the mounting table 1. The hole of the leaf spring with the bushing to be pressed into needs to be roughly facing the direction of the fixed vertical plate 3 on the right. At this time, the baffle 4 of the L-shaped structure is between the placement seat 2 and the fixed vertical plate 3, and its vertical part is located at the rear end of the leaf spring, which plays a key axial blocking role in subsequent operations, ensuring that the leaf spring will not move as a whole or deviate from its position due to axial thrust during the pressing process. After the leaf spring is initially positioned, the operator starts the clamping mechanism 6 located on the upper left side of the mounting table 1 near the placement seat 2, and applies a vertical clamping force to the leaf spring placed on the placement seat 2, effectively fixing the main part of the leaf spring. It is firmly pressed on the placement seat 2 to achieve stable and reliable limiting, overcome the instability caused by the elasticity of the leaf spring itself, and provide the necessary basic fixation for the subsequent high-pressure pressing operation. After completing the reliable pressing of the leaf spring, the operator puts the metal bushing into the corresponding position of the pressing mechanism 5, and the pressing mechanism 5 located on the upper right side of the mounting table 1 starts to move and steadily advances along the preset axial direction (from right to left). The pressure head directly acts on the outer end face of the bushing, exerting a huge and controllable thrust to overcome the interference fit resistance between the outer wall of the bushing and the inner wall of the leaf spring hole, and pushes the bushing to be continuously and steadily embedded in the hole along the axis of the leaf spring mounting hole until it reaches the preset depth and the position accuracy requirements of being fully pressed into place.

[0030] The pressing mechanism 5 includes a first hydraulic cylinder 51, which is arranged on the upper right side of the mounting platform 1. The telescopic end of the first hydraulic cylinder 51 is provided with a push plate 54, and a pressing column 52 is slidably connected to the push plate 54. The pressing column 52 is used to push the bushing for installation, and a first spring 53 is arranged between the pressing column 52 and the push plate 54.

[0031] The push plate 54 is designed with a sliding fit structure to form a sliding connection with the press-fitting column 52. The axis of the press-fitting column 52 is strictly aligned with the center of the bushing to be press-fitted, and its front end face is used to directly contact and push the bushing. The key design is that a first spring 53 is installed between the press-fitting column 52 and the push plate 54. The spring provides a key buffering and adaptive adjustment function. When the hydraulic cylinder pushes the push plate 54 to move left, the first spring 53 is compressed first, and its elastic force pushes the press-fitting column 52 to move left accordingly. If there is a slight misalignment of the axis or the end face is not completely parallel when the end face of the press-fitting column 52 initially contacts the bushing, the flexibility of the first spring 53 and the sliding freedom of the press-fitting column 52 on the push plate 54 allow the press-fitting column 52 to have a slight radial floating or angular swing, thereby automatically adjusting its posture. The first spring 53 is compressed continuously as the hydraulic cylinder thrust increases. Once the press-fitting column 52 overcomes the initial contact difference and fully applies force to the center, or under set conditions, the push plate 54 and the press-fitting column 52 will eventually form a nearly direct rigid connection through a rigid structure. At this time, the main state of the mechanism transitions from flexible buffering to rigid high-pressure transmission. Most of the huge thrust generated by the first hydraulic cylinder 51 is directly transmitted to the press-fitting column 52 through the push plate 54, and then acts efficiently on the bushing, overcoming the strong interference fit resistance between the bushing and the leaf spring mounting hole, and pushing the bushing to be smoothly and continuously embedded in the hole along the precise axial direction, ensuring that the press-fitting depth is accurate. When the press-fitting stroke is completed, the hydraulic cylinder controls the retractable end to retract, and the push plate 54 then retreats. The first spring 53 gradually extends and resets due to decompression.

[0032] The clamping mechanism 6 includes a first mounting frame 61, which is arranged on the upper left side of the mounting platform 1. A second hydraulic cylinder 62 is installed on the upper inner side of the first mounting frame 61. A first pressure plate 63 is connected to the telescopic end of the second hydraulic cylinder 62. The bottom of the first pressure plate 63 is a soft structure to avoid damage to the leaf spring and to clamp and limit the leaf spring.

[0033] It should be noted that the main body of the mechanism is the first mounting frame 61 firmly fixed on the upper left side of the mounting platform 1. The mounting frame usually adopts a rigid frame structure to provide a stable support foundation and guide reference for the entire clamping action. The second hydraulic cylinder 62 installed on the upper inner side of the first mounting frame 61 is the power source of the clamping force. When the leaf spring needs to be compressed, the hydraulic system supplies oil to the second hydraulic cylinder 62, driving its telescopic end to extend forcefully in the vertical direction (downward). The lower end of the telescopic end of the second hydraulic cylinder 62 is rigidly connected to the first pressure plate 63 through a connecting piece. The bottom contact surface of the first pressure plate 63 is a soft structure. When the second hydraulic cylinder 62 pushes the first pressure plate 63 downward, the soft bottom begins to approach and eventually contacts the upper surface of the leaf 111 spring. At the moment of contact and throughout the clamping process, the soft structure plays multiple key roles through its own deformability. First, it effectively avoids the hard metal pressure plate from directly impacting or rubbing the surface of the leaf spring, preventing damage to the surface coating of the leaf spring or scratches, indentations and other defects on the metal body, which is crucial to ensuring the appearance quality and fatigue life of the leaf spring. Secondly, when the soft material contacts the surface of the leaf spring, it can automatically adapt to the slight unevenness or curvature differences that may exist on the upper surface of the leaf spring. Through different degrees of local compression deformation, the actual contact area is increased, thereby achieving a more uniform pressure distribution, avoiding local stress concentration, and ensuring that the force on the leaf spring is balanced and more reasonable. Finally, this uniform and increased contact area allows the leaf spring to be evenly and firmly pressed on the lower placement seat 2 under the action of the downward pressure continuously applied by the second hydraulic cylinder 62, providing a strong vertical downward clamping force.

[0034] Example 2 On the basis of Example 1, a positioning mechanism 7 is also included, which includes a first rack rack 71. The first rack rack 71 is provided on the press-fitting column 52, and a second mounting rack 72 is provided on the rear side of the placement seat 2. The second mounting rack 72 is rotatably connected to the gear 73, and the placement seat 2 is slidably connected to a positioning rod 75. The positioning rod 75 is used to position the leaf spring, and a second rack rack 74 is provided on the positioning rod 75. The second rack rack 74 and the first rack rack 71 are both engaged with the gear 73.

[0035] When the pressing column 52 is pushed to the left, the first rack 71 rigidly connected thereto moves leftward accordingly, and the first rack 71 meshes with the gear 73 mounted on the second mounting frame 72, forcing it to rotate. The rotation of the gear 73 simultaneously meshes with the second rack 74 connected to the positioning rod 75. Due to the meshing direction design of the rack gear 73 pair, the rotation of the gear 73 accurately drives the second rack 74 and the positioning rod 75 to slide horizontally to the right along the transverse guide set on the placement seat 2, and the leftward end of the positioning rod 75 immediately contacts the rear end of the leaf 111 spring, applying a horizontal rightward positioning force, pushing the leaf spring to perform a slight position correction on the placement seat 2, ensuring that the hole for the bushing to be pressed on the leaf spring is accurately concentrically aligned with the pressing column 52 that is continuously moving leftward. When the pressing column 52 retreats to the right, all components move in the opposite direction, and the positioning rod 75 slides right away from the leaf spring to reset.

[0036] It also includes an anti-deflection mechanism 8, which includes a mounting seat 81. The mounting seat 81 is set on the right side of the fixed vertical plate 3. A pressure frame 82 is rotatably connected to the mounting seat 81. The pressure frame 82 is used to press and position the bushing. Two torsion springs 83 are connected between the pressure frame 82 and the mounting seat 81.

[0037] It should be noted that the mounting base 81 is fixed on the right side of the fixed vertical plate 3. The mounting base 81 is rotatably connected to a press frame 82 via a rotating shaft. The press frame 82 is usually designed as a swing arm with a groove, and its front end is located on the side of the bushing pressing path. Two torsion springs 83 are connected between the press frame 82 and the rotating shaft of the mounting base 81. The pre-tightening force of the torsion spring 83 makes the free end of the press frame 82 have an elastic tendency to rotate continuously downward. When the press column 52 pushes the bushing to the left to enter the leaf spring hole, the press frame 82 does not contact the bushing at first. Until the bushing is pressed into place and is about to be fully in place, the outer surface of the bushing will contact the groove at the free end of the press frame 82. Groove, at this time, the bushing continues to move forward and will generate a force on the pressure frame 82. Under the elastic support of the two torsion springs 83, the pressure frame 82 will undergo a small adaptive rotation around the rotating shaft. At the same time, the rotational force generated by the torsion spring 83, which always exists and is precisely directed to the bushing, passes through the arc-shaped constraint surface of the groove of the pressure frame 82, and flexibly and continuously presses the bushing on the theoretical axis from the side, thereby effectively limiting or correcting the slight tilt or axis deviation that may be caused by uneven force at the end of pressing into the bushing, ensuring that the bushing is completely pressed into the leaf spring hole vertically and coaxially, eliminating assembly defects.

[0038] It also includes a close-fitting mechanism 9, which includes a connecting plate 91. The connecting plate 91 is provided on the first pressure plate 63, and a second pressure plate 92 is slidingly provided on the connecting plate 91. The second pressure plate 92 is used to push the leaf spring that is not fully in place so that the rear side of the leaf spring can fit with the baffle 4. A second spring 93 is provided between the second pressure plate 92 and the connecting plate 91.

[0039] It also includes a material guiding mechanism 10, which includes a fixed plate 101. The fixed plate 101 is provided on the upper right side of the fixed vertical plate 3. A material guiding plate 102 is provided on the upper right side of the fixed vertical plate 3. The material guiding plate 102 is used to guide the discharge of the bushing. The material guiding plate 102 is an inclined structure and is located in front of the fixed plate 101. A mounting column 103 is provided between the fixed plate 101 and the fixed vertical plate 3.

[0040] It also includes an adjustment mechanism 11, which includes a contact plate 111. The contact plate 111 is slidably connected to the fixed vertical plate 3. The position of the contact plate 111 is adjusted to adapt to leaf springs of different specifications. A threaded rod 112 is rotatably connected to the mounting platform 1, and the threaded rod 112 is threadedly connected to the contact plate 111.

[0041] The above is a detailed introduction to the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for those skilled in the art, based on the idea of ​​the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A bushing press-fitting device for leaf spring processing, characterized by: The utility model comprises a mounting platform (1), wherein a placement seat (2) is provided on the upper left side of the mounting platform (1), a fixed vertical plate (3) is provided on the upper left side of the mounting platform (1), the fixed vertical plate (3) is located on the right side of the placement seat (2), a baffle (4) is provided between the placement seat (2) and the fixed vertical plate (3), a pressing mechanism (5) is provided on the upper right side of the mounting platform (1), the pressing mechanism (5) is used to press the bushing into the leaf spring, and a clamping mechanism (6) is provided on the upper left side of the mounting platform (1), the clamping mechanism (6) is used to clamp and limit the leaf spring.

2. The bushing press-fitting device for leaf spring processing according to claim 1, characterized in that: The press-fitting mechanism (5) includes a first hydraulic cylinder (51), which is provided on the upper right side of the mounting platform (1), and a push plate (54) is provided at the telescopic end of the first hydraulic cylinder (51). A press-fitting column (52) is slidably connected to the push plate (54), and the press-fitting column (52) is used to push and install the bushing. A first spring (53) is provided between the press-fitting column (52) and the push plate (54).

3. The bushing press-fitting device for leaf spring processing according to claim 2, characterized in that: The clamping mechanism (6) includes a first mounting frame (61), the first mounting frame (61) is provided on the upper left side of the mounting platform (1), a second hydraulic cylinder (62) is installed on the upper inner side of the first mounting frame (61), a first pressing plate (63) is connected to the telescopic end of the second hydraulic cylinder (62), and the bottom of the first pressing plate (63) is a soft structure to avoid damage to the leaf spring and to clamp and limit the leaf spring.

4. The bushing press-fitting device for leaf spring processing according to claim 3, characterized in that: The invention also includes a positioning mechanism (7), wherein the positioning mechanism (7) includes a first rack (71), the first rack (71) is provided on the press-fitting column (52), a second mounting frame (72) is provided on the rear side of the placement seat (2), a gear (73) is rotatably connected to the second mounting frame (72), a positioning rod (75) is slidably connected to the placement seat (2), the positioning rod (75) is used to position the leaf spring, a second rack (74) is provided on the positioning rod (75), and the second rack (74) and the first rack (71) are both meshed with the gear (73).

5. The bushing press-fitting device for leaf spring processing according to claim 4, characterized in that: The anti-deflection mechanism (8) includes a mounting seat (81), the mounting seat (81) is provided on the right side of the fixed vertical plate (3), a pressing frame (82) is rotatably connected to the mounting seat (81), the pressing frame (82) is used to press and position the bushing, and two torsion springs (83) are connected between the pressing frame (82) and the mounting seat (81).

6. The bushing press-fitting device for leaf spring processing according to claim 5, characterized in that: The invention also includes a close contact mechanism (9), wherein the close contact mechanism (9) includes a connecting plate (91), the connecting plate (91) is provided on the first pressure plate (63), a second pressure plate (92) is slidably provided on the connecting plate (91), the second pressure plate (92) is used to push the leaf spring that is not fully in place so that the rear side of the leaf spring can be in contact with the baffle (4), and a second spring (93) is provided between the second pressure plate (92) and the connecting plate (91).

7. The bushing press-fitting device for leaf spring processing according to claim 6, characterized in that: The invention also includes a material guide mechanism (10), wherein the material guide mechanism (10) includes a fixed plate (101), the fixed plate (101) is provided on the upper right side of the fixed vertical plate (3), and a material guide plate (102) is provided on the upper right side of the fixed vertical plate (3). The material guide plate (102) is used to guide the bushing to be discharged. The material guide plate (102) is an inclined structure and is located in front of the fixed plate (101). A mounting column (103) is provided between the fixed plate (101) and the fixed vertical plate (3).

8. The bushing press-fitting device for leaf spring processing according to claim 7, characterized in that: The device further comprises an adjusting mechanism (11), wherein the adjusting mechanism (11) comprises a contact plate (111), wherein the contact plate (111) is slidably connected to the fixed vertical plate (3), and the position of the contact plate (111) can be adjusted to adapt to leaf springs of different specifications, and wherein a threaded rod (112) is rotatably connected to the mounting platform (1), and the threaded rod (112) is threadedly connected to the contact plate (111).

9. The bushing press-fitting equipment for leaf spring processing according to claim 1, characterized in that: The right part of the fixed vertical plate (3) is provided with an arc-shaped recessed plate for placing the bushing.

10. The bushing press-fitting equipment for leaf spring processing according to claim 1, characterized in that: The baffle (4) is an L-shaped structure, and the baffle (4) is used to block the leaf spring.

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