A pre-pressing device for processing a steel plate spring

Abstract

This utility model relates to the field of leaf spring technology, specifically disclosing a pre-compression device for processing leaf springs. It includes an operating table with a through-hole pre-compression groove, a pre-compression assembly for pre-compressing leaf springs located above the pre-compression groove on the operating table, roller conveyors symmetrically arranged on the operating table and on both sides of the pre-compression groove for transporting leaf springs, clamping assemblies symmetrically arranged below the pre-compression groove for holding leaf springs, and cylinders located below the clamping assemblies for driving the clamping assemblies to rise and fall. The operating table is equipped with a single-chip microcomputer controller for controlling the pre-compression assembly, roller conveyors, clamping assemblies, and cylinders. This invention solves the problem that existing leaf spring pre-compression devices cannot control the bending curvature of the leaf spring by the pre-compression punch during pre-compression, thus affecting the performance of the leaf spring.

Description

Technical Field

[0001] This application relates to the field of preloading technology for leaf springs, and specifically discloses a preloading device for processing leaf springs. Background Technology

[0002] Leaf springs are a common suspension system component used to support and connect the chassis and body of a car. They consist of multiple layers of bent steel plates, installed between the wheels and chassis to provide support and shock absorption. During leaf spring manufacturing, the raw steel plates are bent and assembled to form the spring shape. Due to the elasticity of the material, some deformation may occur during processing, resulting in the spring not perfectly conforming to the design requirements. A preload device applies appropriate pressure to the spring, restoring it to its designed shape and ensuring stability during subsequent use; therefore, a preload device for leaf spring manufacturing is required.

[0003] In existing leaf spring preloading devices, the preloading punch preloads the leaf spring held by the clamping assembly to improve the stability of the leaf spring during operation. However, the bending radius of the leaf spring caused by the preloading punch cannot be controlled during preloading, which affects the performance of the leaf spring.

[0004] Therefore, the inventors have provided a preloading device for processing leaf springs to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to solve the problem that existing leaf spring preloading devices cannot control the bending curvature of the leaf spring by the preloading punch during preloading, thus affecting the performance of the leaf spring.

[0006] To achieve the above objectives, the basic solution of this utility model provides a pre-compression device for processing leaf springs, including an operating table with a through pre-compression groove, a pre-compression assembly for pre-compressing leaf springs located on the operating table above the pre-compression groove, roller conveyors for transporting leaf springs symmetrically arranged on the operating table and on both sides of the pre-compression groove, clamping assemblies for holding leaf springs located below the pre-compression groove and symmetrically arranged, and cylinders located below the clamping assemblies for driving the clamping assemblies to rise and fall. The operating table is equipped with a single-chip microcomputer controller for controlling the pre-compression assembly, roller conveyors, clamping assemblies and cylinders.

[0007] 1. In this utility model, the steel leaf spring is first slid from the previous processing step to the top of the pre-pressing groove on the operating table by a roller conveyor. The cylinder drives the clamping assembly to rise and clamp the steel leaf spring. Then, the pre-pressing assembly on the operating table pre-presses the steel leaf spring to complete the pre-pressing process. Finally, the steel leaf spring is driven to the next processing step by the roller conveyor.

[0008] 2. Compared with the prior art, this utility model has a clamping component below the pre-compression groove of the operating table, and a cylinder is provided below the clamping component. The clamping component clamps the leaf spring, and the cylinder drives the clamping component to rise or fall, which can adjust the bending arc of the pre-compression punch on the leaf spring. This solves the problem that the existing leaf spring pre-compression device cannot control the bending arc of the pre-compression punch on the leaf spring when pre-compressing leaf springs with different properties, thus affecting the later use of the leaf spring.

[0009] Furthermore, the pre-compression assembly includes a support frame fixed to the operating table, a second cylinder mounted on the support frame, and a pre-compression punch fixed to the output end of the second cylinder and extending into the support frame for pre-compressing the leaf spring. The second cylinder drives the pre-compression punch to pre-compress the leaf spring, completing the pre-compression work of the leaf spring. The roller conveyor passing through the support frame does not affect the transportation of the leaf spring, nor does it affect the pre-compression of the leaf spring.

[0010] Furthermore, the symmetrically arranged clamping assemblies and the symmetrically arranged roller conveyors are located on the same side of the pre-compression trough. Each clamping assembly includes a support plate located below the pre-compression trough, a working frame fixed to the support plate, a movable arm one fixed to the working frame, a movable arm two slidably connected within the working frame, and a cylinder three fixed to one side of the working frame with its output shaft fixed to the movable arm two. Clamping plates are provided on opposite sides of both movable arms one and two, and cylinder one is fixed to the support plate. Cylinder three pushes movable arm two within the working frame, causing the clamping plates on movable arms one and two to move closer together until the two clamping plates clamp and fix the leaf spring.

[0011] Furthermore, each clamping plate includes a clamping plate one and a clamping plate two. Both clamping plates one and two have symmetrical vertical slots. A telescopic rod is fixedly connected between the vertical slots on the same side of each clamping plate one and two. A spring is fitted over each telescopic rod, with both ends of the spring fixedly connected to the ends of the vertical slots. The telescopic rod between clamping plates one and two allows for changing the distance between them to accommodate leaf springs of different widths.

[0012] Furthermore, the pre-compression groove is square in shape. The square shape of the pre-compression groove facilitates the cooperation between the clamping assembly and the roller conveyor, and the clamping and transportation of the leaf springs are not affected by the pre-compression groove.

[0013] Furthermore, the microcontroller is connected to cylinders one, two, and three, and the roller conveyor via solenoid valves. The microcontroller controls the operation of cylinders one, two, and three, and the roller conveyor through the solenoid valves, making the pre-compression device more automated. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A schematic diagram of a preloading device for processing leaf springs according to an embodiment of this application is shown;

[0016] Figure 2 A schematic diagram of the clamping assembly of a preloading device for processing leaf springs according to an embodiment of this application is shown;

[0017] Figure 3 A schematic diagram of the clamping plate of a preloading device for processing leaf springs according to an embodiment of this application is shown. Detailed Implementation

[0018] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0019] The reference numerals in the accompanying drawings include: 1. Operating platform; 2. Roller conveyor; 3. Cylinder 1; 4. Cylinder 2; 5. Pre-press punch; 6. Support plate; 7. Working frame; 8. Movable arm 1; 9. Clamping plate; 10. Cylinder 3; 11. Movable arm 2; 12. Clamping plate 1; 13. Telescopic rod; 14.

[0020] A preloading device for processing leaf springs, implementing, for example... Figure 1 As shown: It includes an operating platform 1, a pre-compression assembly, a roller conveyor 2, a clamping assembly, and a cylinder 1. Specifically, the operating platform 1 consists of four vertical support columns and a connecting plate welded to the top of the support columns. A through-type square pre-compression groove is cut into the upper surface of the connecting plate. The roller conveyor 2 is symmetrically installed on the operating platform 1 on both sides of the pre-compression groove. The pre-compression assembly is located above the pre-compression groove, and the clamping assembly is located below the pre-compression groove. A single-chip microcomputer controller for controlling the pre-compression assembly, roller conveyor 2, clamping assembly, and cylinder 1 is also installed on the left side of the operating platform 1.

[0021] The pre-compression assembly includes a support frame, cylinder 4, and a pre-compression punch 5. Specifically, the support frame consists of vertical plates welded to the left and right sides of the operating table 1 and a horizontal plate welded between the tops of the vertical plates. Cylinder 4 is fixedly installed on the lower surface of the horizontal plate. The output shaft of cylinder 4 is vertically downward and fixedly installed with the pre-compression punch 5. The pre-compression punch 5 has a cylindrical structure. The direction in which the pre-compression punch 5 presses down on the leaf spring is consistent with the transport direction of the leaf spring. The roller conveyor 2 passes under the support frame. Cylinder 4 drives the pre-compression punch 5 to pre-compress the leaf spring, completing the pre-compression work of the leaf spring.

[0022] The clamping assembly includes a support plate 6, a working frame 7, a movable arm 1 8, a movable arm 2 11, and a cylinder 3 10. Specifically, support plate 6 is installed below the pre-compression groove, working frame 7 is welded to support plate 6, movable arm 1 8 is fixedly installed on the left side inside working frame 7, a horizontal groove is opened at the bottom of working frame 7, movable arm 2 11 slides in the horizontal groove, a fixed plate is fixedly installed on the right side of working frame 7, cylinder 3 10 is fixedly installed on the output end of the fixed plate and extends into working frame 7 and is fixedly installed with movable arm 2 11, clamping plates are installed on opposite sides of movable arm 1 8 and movable arm 2 11, cylinder 3 10 pushes movable arm 2 11 inside working frame 7 until the two clamping plates clamp and fix the steel plate spring, the output shaft of cylinder 1 3 is fixedly installed with support plate 6, cylinder 1 3 drives support plate 6 to rise and fall, thereby driving clamping plates to clamp the steel plate spring to rise and fall, controlling the bending arc of the steel plate spring pre-compression, the single-chip microcomputer controller is connected to cylinder 1, cylinder 2, cylinder 3 and roller conveyor through solenoid valves to make the pre-compression device more automated.

[0023] In this embodiment, each clamping plate 9 includes a first clamping plate 12 and a second clamping plate 13. Both the first clamping plate 12 and the second clamping plate 13 have symmetrical vertical slots. A telescopic rod 14 is welded between the vertical slots on the same side of the first clamping plate 12 and the second clamping plate 13. A second spring is sleeved on the outside of the telescopic rod 14. Both ends of the second spring are welded to the ends of the vertical slots. The telescopic rod 14 between the first clamping plate 12 and the second clamping plate 13 can change the distance between the first clamping plate 12 and the second clamping plate 13 to facilitate clamping steel leaf springs of different widths.

[0024] In use, the microcontroller controller on the operating table 1 first starts the roller conveyor 2, causing the leaf spring to slide from the previous processing step to the operating table 1 above the pre-pressing groove. Then, the roller conveyor 2 is stopped. Next, cylinder 3 is started to lift the support plate 6 and the working frame 7, so that the clamping plate 9 inside the working frame 7 is positioned on both sides of the leaf spring. Cylinder 3 is stopped, and then cylinder 10 is started to clamp the leaf spring with the clamping plate 9. The distance between clamping plates 12 and 13 in the clamping plate 9 is adjusted according to the width of the leaf spring. Finally, the cylinder 10 is started. Cylinder 2 (4) drives the pre-pressing punch to pre-press the leaf spring. After pre-pressing, the roller conveyor 2 is started first, so that the leaf spring slides out from the operating table 1 and slides to the next processing step. Depending on the application and required performance of the leaf spring, cylinder 1 (3) drives the clamping plate to lift or lower the leaf spring, controlling the bending arc of the leaf spring. This solves the problem that the existing leaf spring pre-pressing device cannot control the bending arc of the leaf spring by the pre-pressing punch 5 during the use of the leaf spring, thus affecting the performance of the leaf spring.

[0025] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A preloading device for processing leaf springs, characterized in that, The device includes an operating platform with a through-hole pre-compression groove, a pre-compression assembly for pre-compressing steel leaf springs located on the operating platform above the pre-compression groove, roller conveyors for transporting steel leaf springs symmetrically arranged on the operating platform and on both sides of the pre-compression groove, clamping assemblies for holding steel leaf springs located below the pre-compression groove and symmetrically arranged, and cylinders located below the clamping assemblies for driving the clamping assemblies to rise and fall. The operating platform is equipped with a single-chip microcomputer controller for controlling the pre-compression assembly, roller conveyors, clamping assemblies and cylinders.

2. The preloading device for a steel plate spring according to claim 1, wherein The pre-compression assembly includes a support frame fixed to the operating table, a second cylinder mounted on the support frame, and a pre-compression punch fixed to the output end of the second cylinder and extending into the support frame for pre-compressing the leaf spring.

3. The preloading device for processing leaf springs according to claim 1, characterized in that, The symmetrically arranged clamping assemblies and the symmetrically arranged roller conveyors are located on the same side of the pre-compression trough. Each clamping assembly includes a support plate located below the pre-compression trough, a working frame fixed to the support plate, a movable arm one fixed to the working frame, a movable arm two slidably connected inside the working frame, and a cylinder three fixed to one side of the working frame with its output shaft fixed to the movable arm two. Each movable arm one and movable arm two has a clamping plate on opposite sides, and the cylinder one is fixed to the support plate.

4. The preloading device for a steel plate spring according to claim 3, wherein Each clamping plate includes a clamping plate one and a clamping plate two. Each clamping plate one and clamping plate two has symmetrical vertical grooves. Each clamping plate one and clamping plate two has a telescopic rod fixedly connected between the vertical grooves on the same side. Each telescopic rod is fitted with a spring, and both ends of the spring are fixedly connected to the ends of the vertical grooves.

5. The preloading device for a steel plate spring according to claim 1, wherein The pre-compression groove is square in shape.

6. A preloading device for a steel plate spring machining according to claim 2 or 3, characterized in that The microcontroller controller is connected to cylinder one, cylinder two, cylinder three and the roller conveyor via solenoid valves.

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