Plate spring center hole punching device for steel plate spring machining

Abstract

The utility model relates to the technical field of plate spring production and processing, and particularly discloses a plate spring center hole punching device for processing a steel plate spring, which comprises a punching component, a punching component, a punching component, a punching component, a punching component, a punching component and a punching component, and is characterized in that the punching component comprises a bottom die, a top die positioned above the bottom die and a driving piece for driving the top die to move; arc-shaped surfaces matched with each other are arranged on the sides, close to each other, of the bottom die and the top die; the positioning holes are formed in the two sides of the arc-shaped face of the bottom die respectively, the positioning columns are arranged on the two sides of the top die and matched with the positioning holes, the positioning block is connected with the bottom die in a sliding mode, the pressing block is connected with the top die, and the end of the pressing block and the end of the positioning block are provided with inclined faces which are connected in a sliding mode. The problems that in the center hole punching process of a traditional alloy spring piece, positioning depends on external positioning equipment, control is complex, and the process is tedious are solved.

Description

Technical Field

[0001] This application relates to the field of leaf spring production and processing technology, and specifically discloses a leaf spring center hole punching device for processing steel leaf springs. Background Technology

[0002] Leaf springs are the most widely used elastic element in automotive suspensions. They are composed of several alloy spring plates of equal width but unequal length (thickness may be equal or unequal) forming an elastic beam of approximately equal strength. When the road surface impacts the wheels, the leaf springs deform, playing a role in buffering and damping. When arranged longitudinally, they also have the function of guiding and transmitting force.

[0003] To facilitate the interconnection of the various alloy spring sheets, it is usually necessary to punch a center hole in the center of the alloy spring sheet, and then connect the center holes of the various alloy spring sheets with bolts to form an elastic beam used in automobile suspension.

[0004] Currently, there is a problem with positioning during the punching of center holes in alloy spring sheets. If the alloy spring sheets cannot be accurately positioned, the stamped products are prone to large errors, resulting in unqualified products and wasting raw materials, which increases production costs. At present, the stamping dies used to process alloy spring sheets mainly rely on external positioning equipment for positioning, which is complex to control and cumbersome. In view of this, this utility model provides a punching device for center holes of leaf springs to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to solve the problem that traditional alloy spring sheets rely on external positioning equipment for positioning during the punching of the center hole, which is complex and cumbersome.

[0006] To achieve the above objectives, the basic solution of this utility model provides a punching device for the center hole of a leaf spring in the processing of leaf springs, comprising:

[0007] A stamping assembly includes a bottom die, a top die located above the bottom die, and a drive component for moving the top die. The bottom die has a punching groove at its center, and the bottom die and the top die have matching arc-shaped surfaces on their respective sides.

[0008] The positioning assembly includes positioning holes respectively provided on both sides of the arc-shaped surface of the bottom mold, positioning pins provided on both sides of the top mold and adapted to the positioning holes, positioning blocks slidably connected to the bottom mold, and pressure blocks connected to the top mold. The ends of the pressure blocks and the positioning blocks are provided with inclined surfaces that are slidably connected to each other.

[0009] The principle and effect of this basic scheme are as follows:

[0010] Compared with the prior art, this utility model, in the process of driving the top mold to move through the driving component, can drive the positioning pin and positioning hole to cooperate with each other to position the two ends of the alloy spring sheet. At the same time, it can drive the pressure block and positioning block to cooperate with each other to position the side of the alloy spring sheet. This makes it convenient and accurate to position the alloy spring sheet. It effectively solves the problem that the traditional alloy spring sheet relies on external positioning equipment for positioning during the punching of the center hole, which is complicated and cumbersome.

[0011] Furthermore, it also includes a pressure plate driven by a power component, the pressure plate having a punched pin passing through the top die, the punched pin being elastically connected to the top die. This facilitates positioning the alloy spring sheet first, and then punching the center hole of the alloy spring sheet, during the movement of the top die.

[0012] Furthermore, a vertical mating hole is provided at the center of the top die, and the punching pin is slidably connected to the mating hole. The inner wall of the mating hole has a stepped platform, and a limiting plate adapted to the stepped platform is provided on the punching pin. A first spring is provided between the limiting plate and the stepped platform. This facilitates the punching pin in punching the center hole of the alloy spring sheet and resetting it, while preventing the punching pin from detaching from the top die.

[0013] Furthermore, a plurality of connecting posts are provided between the top mold and the pressure plate. The top of each connecting post extends beyond the top of the pressure plate and is provided with a limiting block. A second spring is provided on each connecting post, located between the pressure plate and the top mold. This facilitates the connection between the top mold and the pressure plate, and also facilitates the movement of the top mold by the pressure plate.

[0014] Furthermore, both the positioning hole and the positioning post have guide bevels on the side closest to the arc-shaped surface to facilitate the mating of the positioning hole and the positioning post.

[0015] Furthermore, the bottom mold sidewall is provided with a conversion block, and the conversion block has a sliding cavity. The pressure block is vertically slidably connected to the sliding cavity, and the positioning block is laterally slidably connected to the sliding cavity. This facilitates limiting and guiding the movement of the pressure block and the positioning block.

[0016] Furthermore, the positioning block includes a mating part that cooperates with the pressure block, a sliding part that cooperates with the sliding cavity, and a limiting part that can fit tightly against the bottom sidewall. A third spring is sleeved on the sliding part to facilitate the movement and resetting of the positioning block. Attached Figure Description

[0017] 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.

[0018] Figure 1 A schematic diagram of a leaf spring center hole punching device for processing leaf springs according to an embodiment of this application is shown. Detailed Implementation

[0019] 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.

[0020] The reference numerals in the accompanying drawings include: pad 1, bottom mold 2, top mold 3, positioning hole 4, positioning pin 5, mating hole 6, punching pin 7, first spring 8, pressure plate 9, connecting pin 10, limiting block 11, guide rod 12, conversion block 13, mating part 14, sliding part 15, limiting part 16, connecting pin 17, and pressure block 18.

[0021] A punching device for the center hole of a leaf spring in the processing of leaf springs, wherein, for example... Figure 1 As shown: The system includes a stamping assembly and a positioning assembly. The stamping assembly includes a bottom die 2, a top die 3 located above the bottom die 2, a driving component for moving the top die 3, and a pressure plate 9 driven by a power component. The driving component is a pneumatic or hydraulic cylinder, fixedly connected to the center of the pressure plate 9 via a fixed seat. Several guide rods 12 are provided between the bottom die 2 and the top die 3. A baffle is provided on the back of the bottom die 2. A punched groove is provided at the center of the bottom die 2. A pad 1 is provided at the bottom of the bottom die 2. The sides of the bottom die 2 and the top die 3 that are close to each other have mutually adaptable arc-shaped surfaces. The pressure plate 9 has a through-hole... The punching top post 7 of the top mold 3 is elastically connected to the top mold 3. Specifically, the top mold 3 has a vertical mating hole 6 at its center. The punching top post 7 is slidably connected to the mating hole 6, and the inner wall of the mating hole 6 has a stepped platform. The punching top post 7 is equipped with a limiting plate that matches the stepped platform. A first spring 8 is provided between the limiting plate and the stepped platform. Several connecting posts 10 are also provided between the top mold 3 and the plate. The top of the connecting post 10 extends out of the top of the pressure plate 9 and is equipped with a limiting block 11. A second spring is provided on the connecting post 10 located between the pressure plate 9 and the top mold 3.

[0022] The positioning assembly includes positioning holes 4 on both sides of the arc-shaped surface of the bottom mold 2, positioning pins 5 on both sides of the top mold 3 and adapted to the positioning holes 4, positioning blocks slidably connected to the bottom mold 2, and pressure blocks 18 connected to the top mold 3 by connecting pins 17. The positioning holes 4 and positioning pins 5 are provided with guide slopes on the side near the arc-shaped surface. The ends of the pressure blocks 18 and positioning blocks are provided with slopes that are slidably connected to each other. Specifically, the side wall of the bottom mold 2 is provided with a conversion block 13. The conversion block 13 is provided with a sliding cavity. The pressure block 18 is vertically slidably connected to the sliding cavity, and the positioning block is horizontally slidably connected to the sliding cavity. The positioning block includes a mating part 14 that mates with the pressure block 18, a sliding part 15 that mates with the sliding cavity, and a limiting part 16 that can be tightly fitted to the bottom side wall. The mating part 14 is vertically provided with a mating groove, and the slope is on one side of the inner wall of the mating groove. A third spring is sleeved on the sliding part 15.

[0023] During the movement of the top mold 3 driven by the driving component, the positioning pin 5 and the positioning hole 4 cooperate to position the two ends of the alloy spring sheet. At the same time, the pressure block 18 and the positioning block cooperate to position the side of the alloy spring sheet. This allows for convenient and accurate positioning of the alloy spring sheet, effectively solving the problem of the traditional alloy spring sheet relying on external positioning equipment for positioning during the punching of the center hole, which is complex and cumbersome.

[0024] 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 indirect 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 punching device for the center hole of a leaf spring in steel leaf spring processing, characterized in that, include: A stamping assembly includes a bottom die, a top die located above the bottom die, and a drive component for moving the top die. The bottom die has a punching groove at its center, and the bottom die and the top die have matching arc-shaped surfaces on their respective sides. The positioning assembly includes positioning holes respectively provided on both sides of the arc-shaped surface of the bottom mold, positioning pins provided on both sides of the top mold and adapted to the positioning holes, positioning blocks slidably connected to the bottom mold, and pressure blocks connected to the top mold. The ends of the pressure blocks and the positioning blocks are provided with inclined surfaces that are slidably connected to each other.

2. The leaf spring center hole punching device for processing leaf springs according to claim 1, characterized in that, It also includes a pressure plate driven by a power component, the pressure plate having a punched top post passing through the top mold, the punched top post being elastically connected to the top mold.

3. The leaf spring center hole punching device for processing leaf springs according to claim 2, characterized in that, The top mold has a vertical mating hole at its center. The punching top post is slidably connected to the mating hole, and the inner wall of the mating hole has a stepped platform. The punching top post has a limiting plate that is adapted to the stepped platform, and a first spring is provided between the limiting plate and the stepped platform.

4. The leaf spring center hole punching device for processing leaf springs according to claim 2, characterized in that, Several connecting columns are provided between the top mold and the pressure plate. The top of the connecting column extends out of the top of the pressure plate and is provided with a limiting block. A second spring is provided on the connecting column between the pressure plate and the top mold.

5. The leaf spring center hole punching device for processing leaf springs according to claim 1, characterized in that, The positioning hole and the positioning post are both provided with a guide slope on the side near the arc-shaped surface.

6. The leaf spring center hole punching device for processing leaf springs according to claim 1, characterized in that, The bottom mold sidewall is provided with a conversion block, the conversion block is provided with a sliding cavity, the pressure block is vertically slidably connected to the sliding cavity, and the positioning block is horizontally slidably connected to the sliding cavity.

7. A leaf spring center hole punching device for processing leaf springs according to claim 6, characterized in that, The positioning block includes a mating part that cooperates with the pressure block, a sliding part that cooperates with the sliding cavity, and a limiting part that can fit tightly against the bottom side wall. A third spring is sleeved on the sliding part.

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