Kidney-shaped hole cold-punching die

Abstract

The utility model discloses a kidney-shaped hole cold punching die which comprises an upper die assembly, a clamping assembly and a lower die assembly, a working space used for punching a workpiece is formed between the upper die assembly and the lower die assembly, the upper die assembly and the lower die assembly are both installed on a die base, and the clamping assembly is installed on the lower die assembly and used for clamping the workpiece. A ball guide pillar and a cylindrical spring are arranged between the two die holders; the clamping assembly comprises a fixed clamping plate, a movable clamping plate and a clamping spring, the fixed clamping plate is installed on the lower die assembly, the movable clamping plate is installed on the lower die assembly in a sliding mode, the two ends of the clamping spring abut against the lower die assembly and the movable clamping plate respectively, and the movable clamping plate and the fixed clamping plate clamp a workpiece. According to the cold-punching die, through cooperation of the upper die assembly and the lower die assembly, punching work on a workpiece can be completed, under the action of the clamping assembly, the workpiece is preliminarily fixed to the lower die assembly, and danger and uncontrollability caused by manual operation are avoided; in addition, the working steps of the upper die assembly are divided into two stages, the first stage is matched with the lower die assembly to press the workpiece from the upper direction and the lower direction, the second stage is used for completing punching, the workpiece is firmly fixed, and the machining precision is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping dies, in particular to a waist hole cold stamping die. Background Art

[0002] Stamping is a pressure processing method that uses a die installed on a press machine to apply pressure to the material at room temperature to separate or plastically deform the material, thereby obtaining the desired parts. Stamping processing usually requires a stamping die and a stamping machine, among which the stamping die mainly plays the role of forming the workpiece. A special process equipment that processes materials (metal or non-metal) into parts (or semi-finished products) is called a cold stamping die (commonly known as a cold stamping die).

[0003] In general, when using a stamping die, the workpiece needs to be manually held and stabilized on the lower die of the stamping die, and then the punch (or upper die) punches the workpiece to obtain the required parts. This stamping method is difficult to stabilize the workpiece and threatens the safety of workers. Therefore, many cold stamping dies are usually equipped with clamping devices to fix the workpiece. Considering the straight up and down working form of the cold stamping die, the clamping device is basically clamped from both sides of the workpiece. However, because the processing area of ​​the conventional waist hole cold stamping die is small, the punch usually directly impacts the workpiece. Even if there is a clamping device to clamp the workpiece, the impact force will cause the workpiece to shift, affecting the processing accuracy and product quality. Utility Model Content

[0004] The utility model aims to provide a waist hole cold punching die to solve the problem that even if a general cold punching die has a clamping device, the impact force may cause the workpiece to shift, thus affecting the processing accuracy and product quality.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A waist hole cold punching die, comprising an upper die assembly, a clamping assembly and a lower die assembly, wherein a working space for punching a workpiece is formed between the upper die assembly and the lower die assembly and both are installed on a die base, and the clamping assembly is installed on the lower die assembly and is used to clamp the workpiece; wherein,

[0007] A ball guide column and a cylindrical spring are arranged between the two mold bases;

[0008] The clamping assembly includes a fixed clamping plate, a movable clamping plate and a clamping spring. The fixed clamping plate is installed on the lower mold assembly, and the movable clamping plate is slidably installed on the lower mold assembly. The two ends of the clamping spring are respectively pressed against the lower mold assembly and the movable clamping plate. The movable clamping plate and the fixed clamping plate clamp the workpiece.

[0009] A further technical solution is: the upper die assembly includes an upper pad, an upper fixed plate, an elastic plate, an upper slide plate and a punch, the upper pad is installed on one of the die bases, the upper fixed plate is installed on the upper pad, the elastic plate and the punch are both installed on the upper fixed plate, the upper slide plate is slidably connected to the upper fixed plate through a sliding column, and the upper slide plate is provided with a through hole for the working end of the punch to pass through.

[0010] A further technical solution is: the elastic plate is a silicone block.

[0011] A further technical solution is: the lower die assembly includes a lower pad, a lower support plate and a lower die, the lower pad is installed on another of the die bases, the lower support plate is installed on the lower pad, the lower die is installed on the lower support plate, and the lower die is adapted to the punch.

[0012] A further technical solution is that a chip removal groove is arranged on the lower pad.

[0013] A further technical solution is: a guide hole for the sliding column is provided on the lower support plate.

[0014] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0015] The utility model proposes a waist hole cold punching die, which can complete the punching work of the workpiece through the cooperation of the upper die assembly and the lower die assembly, and under the action of the clamping assembly, the workpiece is initially fixed on the lower die assembly, avoiding the danger and uncontrollability brought by manual operation; in addition, the working steps of the upper die assembly are divided into two stages, the first stage cooperates with the lower die assembly to press the workpiece from the upper and lower directions, and the second stage completes the punching, firmly fixes the workpiece, and ensures the processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a structural schematic diagram of a waist hole cold punching die.

[0017] Figure 2 For this utility model Figure 1 Schematic diagram of the structure from another perspective.

[0018] Figure numerals: 1. upper die assembly; 2. clamping assembly; 3. lower die assembly; 4. workpiece; 5. die base; 6. cylindrical spring; 7. fixed clamping plate; 8. movable clamping plate; 9. clamping spring; 10. upper pad; 11. upper fixed plate; 12. elastic plate; 13. upper slide plate; 14. punch; 15. slide column; 16. lower pad; 17. lower support plate; 18. lower die; 19. chip groove; 20. guide hole; 21. ball guide column. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0021] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0023] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Embodiment 1:

[0026] In this embodiment, Figure 1 and Figure 2 As shown, a waist hole cold punching die includes an upper die assembly 1, a clamping assembly 2 and a lower die assembly 3. A working space for punching a workpiece 4 is formed between the upper die assembly 1 and the lower die assembly 3 and both are installed on a die base 5. The clamping assembly 2 is installed on the lower die assembly 3 and is used to clamp the workpiece 4. A ball guide column 21 and a cylindrical spring 6 are arranged between the two die bases 5. The clamping assembly 2 includes a fixed clamping plate 7, a movable clamping plate 8 and a clamping spring 9. The fixed clamping plate 7 is installed on the lower die assembly 3, and the movable clamping plate 8 is slidably installed on the lower die assembly 3. The two ends of the clamping spring 9 are respectively pressed against the lower die assembly 3 and the movable clamping plate 8, and the movable clamping plate 8 and the fixed clamping plate 7 clamp the workpiece 4.

[0027] The cold punching die can complete the punching work of the workpiece 4 on the stamping machine through the cooperation of the upper die assembly 1 and the lower die assembly 3, and under the action of the clamping assembly 2, the workpiece is initially fixed on the lower die assembly 3, avoiding the danger and uncontrollability brought by manual operation.

[0028] Embodiment 2:

[0029] On the basis of the above embodiments, this embodiment shows that the upper die assembly 1 includes an upper pad 10, an upper fixed plate 11, an elastic plate 12, an upper slide plate 13 and a punch 14. The upper pad 10 is installed on one of the die bases 5, the upper fixed plate 11 is installed on the upper pad 10, the elastic plate 12 and the punch 14 are both installed on the upper fixed plate 11, the upper slide plate 13 is slidably connected to the upper fixed plate 11 through a sliding column 15, and the upper slide plate 13 is provided with a through hole for the working end of the punch 14 to pass through.

[0030] The working steps of the upper die assembly 1 are divided into two stages. The first stage cooperates with the lower die assembly 3 to press the workpiece from the upper and lower directions. The second stage completes the punching and firmly fixes the workpiece to ensure the processing accuracy.

[0031] Preferably, the elastic plate 12 is a silicone block.

[0032] The silica gel block can play a role in resetting the upper slide plate 13 .

[0033] Preferably, the lower die assembly 3 includes a lower pad 16, a lower support plate 17 and a lower die 18, the lower pad 16 is mounted on another die base 5, the lower support plate 17 is mounted on the lower pad 16, the lower die 18 is mounted on the lower support plate 17, and the lower die 18 is adapted to the punch 14.

[0034] The lower concave die 18 is mounted on the lower support plate 17 and is used to cooperate with the punch 14 to punch the workpiece 4 .

[0035] Preferably, a chip removal groove 19 is provided on the lower pad 16 .

[0036] The chip removal groove 19 temporarily stores the waste chips dropped during punching, making it convenient to collect and clean the waste chips.

[0037] Preferably, a guide hole 20 for the sliding column 15 is provided on the lower support plate 17 .

[0038] The guide hole 20 is used to stabilize the cooperation movement between the upper mold assembly 1 and the lower mold assembly 3.

[0039] The working process of the utility model is as follows: fix the workpiece 4 between the fixed clamping plate 7 and the movable clamping plate 8 of the clamping assembly 2, and the movable clamping plate 8 is firmly pressed against the workpiece 4 by the force of the clamping spring 9, and then the upper mold assembly 1 is lowered, and the upper slide plate 13 first contacts and presses against the workpiece, and the lower mold assembly 3 and the clamping assembly 2 are matched to clamp the workpiece 4 from four directions of up, down, left and right, and then the punch 14 continues to descend. At this time, within the elastic deformation range of the elastic plate 12, the upper slide plate 13 does not move and continues to press the workpiece 4, and the punch 14 punches the workpiece 4 until the work is completed.

[0040] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A waist hole cold punching die, characterized in that: The invention comprises an upper die assembly (1), a clamping assembly (2) and a lower die assembly (3); a working space for punching a workpiece (4) is formed between the upper die assembly (1) and the lower die assembly (3), and both are mounted on a die base (5); the clamping assembly (2) is mounted on the lower die assembly (3) and is used to clamp the workpiece (4); wherein: A ball guide column (21) and a cylindrical spring (6) are provided between the two mold bases (5); The clamping assembly (2) comprises a fixed clamping plate (7), a movable clamping plate (8) and a clamping spring (9); the fixed clamping plate (7) is mounted on the lower die assembly (3); the movable clamping plate (8) is slidably mounted on the lower die assembly (3); two ends of the clamping spring (9) respectively press against the lower die assembly (3) and the movable clamping plate (8); the movable clamping plate (8) and the fixed clamping plate (7) clamp the workpiece (4).

2. The waist hole cold punching die according to claim 1, characterized in that: The upper die assembly (1) comprises an upper pad (10), an upper fixed plate (11), an elastic plate (12), an upper slide plate (13) and a punch (14); the upper pad (10) is mounted on one of the die bases (5); the upper fixed plate (11) is mounted on the upper pad (10); the elastic plate (12) and the punch (14) are both mounted on the upper fixed plate (11); the upper slide plate (13) is slidably connected to the upper fixed plate (11) via a sliding column (15); and a through hole is provided on the upper slide plate (13) for the working end of the punch (14) to pass through.

3. The waist hole cold punching die according to claim 2, characterized in that: The elastic plate (12) is a silica gel block.

4. The waist hole cold punching die according to claim 2, characterized in that: The lower die assembly (3) comprises a lower pad (16), a lower support plate (17) and a lower die (18); the lower pad (16) is mounted on another of the die bases (5); the lower support plate (17) is mounted on the lower pad (16); the lower die (18) is mounted on the lower support plate (17); and the lower die (18) is adapted to the punch (14).

5. The waist hole cold punching die according to claim 4, characterized in that: The lower pad (16) is provided with a chip removal groove (19).

6. The waist hole cold punching die according to claim 4, characterized in that: A guide hole (20) for the sliding column (15) is provided on the lower support plate (17).

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