Punch forming die for automobile body
By adopting a combined structure of oil cylinder and tension spring in the stamping mold, the problem of low practicality in conventional stamping molds due to excessive springs is solved, and a more stable impact force buffering effect is achieved.
Patent Information
- Application Number
- CN202421553616.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-03
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-07-03
AI Technical Summary
Due to the lack of a buffer mechanism, conventional stamping molds use springs with too rigidity to buffer reaction forces, resulting in the spring being easily broken and the mold is less practical.
A stamping mold for automobile body is designed, using a combined structure of oil cylinder and tension spring, which cushions the impact force through the oil and tension spring in the oil cylinder to avoid using too rigid springs.
It effectively reduces the chipping rate of the spring, improves the practicality of the mold, and ensures that the mold can operate stably under impact force.
Smart Images
Figure CN222944323U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of automobile production, and particularly relates to a stamping forming die for an automobile body. Background Art
[0002] Automobile bodies need to be produced using stamping dies, which are special process equipment used to process materials (metal or non-metal) into parts (or semi-finished products) during cold stamping. They are called cold stamping dies (commonly known as cold stamping dies). Stamping is a pressure processing method that uses a die installed on a press to apply pressure to the material at room temperature to separate or plastically deform it, thereby obtaining the desired parts.
[0003] Since conventional stamping dies lack a buffer mechanism, when directly buffering with a spring, a spring with extremely high rigidity is required to ensure sufficient reaction force. However, a spring with too high rigidity has a high carbon content and is easy to break. Without buffering, the die itself is easy to break, resulting in the problem of low practicality of conventional stamping dies.
[0004] Therefore, we propose a stamping die for automobile body to solve the above problems. Utility Model Content
[0005] The utility model aims to solve the problem of low practicability of conventional stamping dies and proposes a stamping forming die for automobile bodies.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] A stamping die for automobile bodies comprises a die body, a lifting seat is fixedly connected to the lower end of the die body, a support is slidably installed at the lower part of the lifting seat, an oil cylinder is fixedly connected inside the support, a piston is slidably installed inside the oil cylinder, the upper end of the piston is fixedly connected to the lifting seat, a tubular piston is slidably installed at the lower part of the oil cylinder, a tension spring is fixedly connected between the tubular piston and the oil cylinder, and a sealing cover is threadedly installed at the lower end opening of the tubular piston. Unscrew the sealing cover, then inject oil into the oil cylinder through the tubular piston, use the oil to push the piston upward, so that a buffer distance is generated between the lifting seat and the support, and then tighten the sealing cover to cover the lower end opening of the tubular piston for easy oil replenishment.
[0008] When the mold body is subjected to impact force, the lifting seat acts downward on the oil in the oil cylinder, and the oil acts on the tubular piston, which reduces the force through the tubular piston and then acts on the tension spring. The tension spring is used to buffer the impact force of the tubular piston. The method of using the tubular piston to reduce the force and then using the tension spring for buffering avoids the use of springs with excessive rigidity and high rigidity, thereby reducing the spring breakage rate.
[0009] Preferably, the support comprises a guide seat and a support leg, and the support leg is symmetrically fixedly connected to the lower end of the guide seat. The guide seat is used to conveniently guide the lifting seat to rise and fall.
[0010] Preferably, the support further comprises a reinforcing rod, which is fixedly connected between the supporting legs, so as to increase the firmness between the supporting legs.
[0011] Preferably, the lifting seat comprises a mounting plate and a slide column, wherein the slide column is fixedly connected to the lower end of the mounting plate. The guide seat is used to guide the slide column to rise and fall, thereby preventing the mounting plate from being distorted and increasing the stability of the lifting angle of the lifting seat.
[0012] Preferably, the oil cylinder comprises a cylinder body and a sub-cylinder, and the sub-cylinder is fixedly connected to the lower end of the cylinder body. When the piston descends, the oil is pressed into the sub-cylinder through the piston, and the oil is concentrated on the tubular piston through the sub-cylinder, which facilitates reducing the force of the tubular piston on the tension spring.
[0013] Preferably, the oil cylinder further comprises a reinforcement ring, which is fixedly connected between the cylinder body and the sub-cylinder, so as to increase the stability of the sub-cylinder.
[0014] Preferably, the tubular piston comprises a conduit, an annular plug, a connecting ring and a threaded nozzle, wherein the annular plug is fixedly connected to the upper part of the conduit, the lower end of the conduit is fixedly connected to the connecting ring, the threaded nozzle penetrates the connecting ring, and the threaded nozzle is fixedly connected to the connecting ring. Oil is injected into the conduit through the threaded nozzle, and enters the sub-cylinder and the cylinder body through the conduit, which facilitates oil injection.
[0015] In summary, the technical effects and advantages of the utility model are as follows:
[0016] 1. When the mold body is subjected to impact force, the lifting seat acts downward on the oil in the oil cylinder, and the oil acts on the tubular piston, which reduces the force through the tubular piston and then acts on the tension spring. The tension spring is used to buffer the impact force of the tubular piston. The tubular piston is used to reduce the force and then the tension spring is used for buffering, avoiding the use of springs with excessive rigidity and high rigidity, thereby reducing the spring breakage rate and improving practicality.
[0017] 2. Unscrew the sealing cap, then inject oil into the oil cylinder through the tubular piston, use the oil to push the piston upward to create a buffer distance between the lifting seat and the support, and then tighten the sealing cap to cover the lower opening of the tubular piston for easy oil replenishment.
[0018] 3. When the piston descends, the oil is pressed into the sub-cylinder through the piston, and the oil is concentrated on the tubular piston through the sub-cylinder, which facilitates reducing the force of the tubular piston on the tension spring. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1It is a schematic diagram of the overall structure of the utility model;
[0020] Figure 2 This is a schematic diagram of the support structure of the utility model;
[0021] Figure 3 This is a schematic diagram of the lifting seat structure of the utility model;
[0022] Figure 4 This is a schematic diagram of the oil cylinder structure of the utility model;
[0023] Figure 5 This is a schematic diagram of the tubular piston structure of the utility model.
[0024] In the figure: 2, support; 3, lifting seat; 4, oil cylinder; 5, tubular piston; 6, sealing cover; 7, tension spring; 8, mold body; 9, piston; 21, guide seat; 22, support foot; 23, reinforcement rod; 31, mounting plate; 32, sliding column; 41, cylinder body; 42, sub-cylinder; 43, reinforcement ring; 51, guide tube; 52, connecting ring; 53, threaded nozzle; 54, annular plug. DETAILED DESCRIPTION
[0025] The technical solutions in the utility model embodiments will be described clearly and completely below in conjunction with the drawings in the utility model embodiments. Obviously, the described embodiments are only part of the utility model embodiments, rather than all of the embodiments.
[0026] Reference Figure 1 A stamping mold for an automobile body includes a mold body 8, a lifting seat 3 is fixedly connected to the lower end of the mold body 8, a support 2 is slidably installed at the lower part of the lifting seat 3, an oil cylinder 4 is fixedly connected inside the support 2, a piston 9 is slidably sealed inside the oil cylinder 4, the upper end of the piston 9 is fixedly connected to the lifting seat 3, a tubular piston 5 is slidably installed at the lower part of the oil cylinder 4, a tension spring 7 is fixedly connected between the tubular piston 5 and the oil cylinder 4, and a sealing cover 6 is threadedly sealed at the lower end opening of the tubular piston 5.
[0027] Reference Figure 1 and 2 The support 2 includes a guide seat 21 and a support leg 22, and the support leg 22 is symmetrically fixedly connected to the lower end of the guide seat 21. The guide seat 21 is used to guide the lifting seat 3 to rise and fall.
[0028] Reference Figure 1 and 2 The support 2 further includes a reinforcing rod 23, which is fixedly connected between the legs 22. The reinforcing rod 23 is used to increase the firmness between the legs 22.
[0029] Reference Figure 1 , 23, the lifting seat 3 includes a mounting plate 31 and a slide post 32, the slide post 32 slides through the guide seat 21, the upper end of the piston 9 is fixedly connected to the mounting plate 31, and the slide post 32 is fixedly connected to the lower end of the mounting plate 31. The guide seat 21 is used to guide the slide post 32 to rise and fall, prevent the mounting plate 31 from being distorted, and increase the stability of the lifting angle of the lifting seat 3.
[0030] Reference Figure 1 , 2 4, the oil cylinder 4 includes a cylinder body 41 and a sub-cylinder 42, the cylinder body 41 is fixedly connected to the inside of the guide seat 21, the lower sliding seal of the piston 9 is installed in the cylinder body 41, and the sub-cylinder 42 is fixedly connected to the lower end of the cylinder body 41. When the piston 9 descends, the oil is pressed into the sub-cylinder 42 through the piston 9, and the oil is concentrated on the tubular piston 5 through the sub-cylinder 42, reducing the force of the tubular piston 5 on the tension spring 7.
[0031] Reference Figure 1 and 4 The oil cylinder 4 further includes a reinforcement ring 43, which is fixedly connected between the cylinder body 41 and the sub-oil cylinder 42. The reinforcement ring 43 is used to increase the stability of the sub-oil cylinder 42.
[0032] Reference Figure 1 , 4 5, the tubular piston 5 includes a conduit 51, an annular plug 54, a connecting ring 52 and a threaded nozzle 53, the annular plug 54 is slidably sealed in the sub-cylinder 42, the connecting ring 52 is fixedly connected to the lower end of the tension spring 7, the sealing cover 6 is threadedly sealed and installed on the threaded nozzle 53, the annular plug 54 is fixedly connected to the upper part of the conduit 51, the lower end of the conduit 51 is fixedly connected to the connecting ring 52, the threaded nozzle 53 penetrates the connecting ring 52, and the threaded nozzle 53 is fixedly connected to the connecting ring 52. The oil is injected into the conduit 51 through the threaded nozzle 53, and enters the sub-cylinder 42 and the cylinder body 41 through the conduit 51.
[0033] Working principle: unscrew the sealing cover 6, and then inject oil into the oil cylinder 4 through the tubular piston 5, use the oil to push the piston 9 upward, so that a buffer distance is generated between the lifting seat 3 and the support 2, and then tighten the sealing cover 6 to cover the lower end opening of the tubular piston 5 to replenish the oil; when the mold body 8 is subjected to the impact force, the lifting seat 3 acts downward on the oil in the oil cylinder 4, and the oil acts on the tubular piston 5, and the tubular piston 5 reduces the force and then acts on the tension spring 7, and the tension spring 7 is used to buffer the impact force of the tubular piston 5. The method of using the tubular piston 5 to reduce the force and then using the tension spring 7 for buffering avoids the use of springs with excessive rigidity and high rigidity, thereby reducing the spring breakage rate.
[0034] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited to it. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the utility model according to the technical scheme and utility model concept of the utility model, which should be covered by the protection scope of the utility model.
[0035] The description briefly mentions the application direction of the utility model for the prior art that is known to those skilled in the art and has not been changed, and combines it with the utility model to form a complete technology; the description avoids over-popularizing the technology familiar to those skilled in the art, and is used to assist those skilled in the art to quickly understand the main content of the utility model.
Claims
1. A stamping die for an automobile body, comprising a die body (8), characterized in that: The lower end of the mold body (8) is fixedly connected to a lifting seat (3), the lower part of the lifting seat (3) is slidably mounted with a support (2), the interior of the support (2) is fixedly connected to an oil cylinder (4), the interior of the oil cylinder (4) is slidably sealed with a piston (9), the upper end of the piston (9) is fixedly connected to the lifting seat (3), the lower part of the oil cylinder (4) is slidably mounted with a tubular piston (5), a tension spring (7) is fixedly connected between the tubular piston (5) and the oil cylinder (4), and a sealing cover (6) is threadedly sealed at the lower end opening of the tubular piston (5).
2. The stamping die for automobile body according to claim 1, characterized in that: The support (2) comprises a guide seat (21) and a support foot (22), wherein the support foot (22) is symmetrically fixedly connected to the lower end of the guide seat (21).
3. The stamping die for automobile body according to claim 2, characterized in that: The support (2) further comprises a reinforcing rod (23), wherein the reinforcing rod (23) is fixedly connected between the supporting legs (22).
4. The stamping die for automobile body according to claim 1, characterized in that: The lifting seat (3) comprises a mounting plate (31) and a sliding column (32), wherein the sliding column (32) is fixedly connected to the lower end of the mounting plate (31).
5. The stamping die for automobile body according to claim 1, characterized in that: The oil cylinder (4) comprises a cylinder body (41) and a sub-cylinder (42), wherein the sub-cylinder (42) is fixedly connected to the lower end of the cylinder body (41).
6. The stamping die for automobile body according to claim 5, characterized in that: The oil cylinder (4) further comprises a reinforcement ring (43), wherein the reinforcement ring (43) is fixedly connected between the cylinder body (41) and the sub-cylinder (42).
7. The stamping die for automobile body according to claim 1, characterized in that: The tubular piston (5) comprises a conduit (51), an annular plug (54), a connecting ring (52) and a threaded nozzle (53); the annular plug (54) is fixedly connected to the upper part of the conduit (51); the lower end of the conduit (51) is fixedly connected to the connecting ring (52); the threaded nozzle (53) penetrates the connecting ring (52), and the threaded nozzle (53) is fixedly connected to the connecting ring (52).