CN219324673U

CN219324673U - Multi-station cold heading punching die

Info

Publication number: CN219324673U
Application number: CN202320663862.7U
Authority: CN
Inventors: 孙明; 苏水华; 唐宁波
Original assignee: Shaanxi Frant Auto Parts Co ltd
Current assignee: Shaanxi Frant Auto Parts Co ltd
Priority date: 2023-03-30
Filing date: 2023-03-30
Publication date: 2023-07-11
Anticipated expiration: 2033-03-30

Abstract

The utility model relates to the technical field of cold heading dies, in particular to a multi-station cold heading punching die which comprises a female die and a stamping die. The female die comprises a punching guide die, a punching rod fixing block, a die frame and a spring, wherein a positioning hole and a punching a are formed in the punching guide die; the punching die comprises a punching die sleeve and a punching die, wherein the punching die sleeve is provided with a mounting hole for mounting the punching die, and the punching die is provided with a plurality of punching holes b for punching rods to correspondingly pass through. According to the utility model, the cold heading die is changed into the cold heading punching die, and the punching process is realized in the multi-station cold heading machine. The punching of a plurality of through holes is completed in one step in full-automatic mode during cold heading forming of the product blank, a manufacturing process chain is shortened, machining time and labor cost of drilling are saved, accumulated errors caused by repeated drilling are reduced, and product quality is improved.

Description

Multi-station cold heading punching die

Technical Field

The utility model relates to the technical field of cold heading dies, in particular to a multi-station cold heading punching die.

Background

The tape Kong Xiaoding for automobile features that its disk has several through holes. The existing processing method comprises the following steps: after blank forming is completed on the multi-station cold header, drilling is manually and sequentially performed on the vertical bench drill by using a clamp with an index plate and a drill bit.

Because the drilling process needs to be manually and sequentially processed, the processing time is prolonged, and the processing cost is increased. Meanwhile, errors of the position degree and the included angle of the through holes are influenced by manufacturing precision and abrasion of the dividing plate, accumulated errors are increased, and quality of products is influenced.

Disclosure of Invention

The utility model aims to solve the problems in the background art and provides a multi-station cold heading punching die which is used for realizing a punching process in a multi-station cold heading machine so as to shorten a manufacturing process chain, shorten processing time, reduce processing cost, reduce accumulated errors and improve product quality.

According to the technical scheme, the multi-station cold heading punching die comprises a female die and a stamping die;

the female die comprises a punching guide die, punching rods, punching rod fixing blocks, a die frame and springs, wherein the punching guide die is provided with positioning holes and punching holes a, the punching guide die is arranged on the die frame in a sliding manner, the punching rods penetrate through the punching guide die and are connected with the punching guide die in a sliding manner, the punching rods are arranged on the punching rod fixing blocks in a plurality, the punching rod fixing blocks are arranged on the die frame, and two ends of each spring are respectively connected with the punching guide die and the punching rod fixing blocks; the punching die comprises a punching die sleeve and a punching die, wherein the punching die sleeve is provided with a mounting hole for mounting the punching die, and the punching die is provided with a plurality of punching holes b for punching rods to correspondingly pass through.

Preferably, the punching rod is a cylinder, the punching a and the punching b are round, and the punching rod, the punching a and the punching b are all round and are uniformly distributed.

Preferably, the diameter of the punch bar, punch a and punch b are all 4mm.

Preferably, the punching die sleeve is provided with a waste discharge space, and the punching die is provided with a discharge space communicated with the waste discharge space.

Preferably, the die carrier comprises a fastening screw, a gland, a die sleeve and a cushion block; the die sleeve is hollow, and the cushion block is arranged in the die sleeve; the gland is abutted on the cushion block and connected with the female die sleeve through the fastening screw.

Preferably, the periphery of the punching guide die is provided with a limiting ring part, and one end of the female die sleeve, which faces the die sleeve, is provided with a limiting step for blocking the limiting ring part.

Preferably, the device also comprises a push-out mechanism, wherein the push-out mechanism comprises a push-out punch needle and a punch needle sleeve arranged on the push-out punch needle; the punching needle sequentially penetrates through the gland, the cushion block and the punching rod fixing block and is in sliding connection with the gland, the cushion block and the punching rod fixing block, and the punching needle faces to a positioning hole on the punching guide die.

Compared with the prior art, the utility model has the following beneficial technical effects:

the utility model shortens the manufacturing process chain by realizing the punching process in the multi-station cold header, namely, a punching die sleeve, a punching die, a punching guide die, a punching rod fixing block, a push-out mechanism, a die carrier and a spring are arranged in the cold header. When the product blank is formed by cold heading, a multi-station cold heading machine is used for fully automatically completing punching of a plurality of through holes at one time. The manufacturing process chain is shortened, the processing time consumption and the labor cost of drilling are saved, the accumulated error caused by repeated drilling is reduced, and the product quality is improved.

Drawings

FIG. 1 is a structural cross-sectional view of a multi-station cold heading and punching die in a punching initial position;

FIG. 2 is a cross-sectional view of a multi-station cold heading and punching die in the punching process;

FIG. 3 is a partial sectional view of the multi-station cold heading and punching die of the utility model after punching;

fig. 4 is a schematic diagram of the structure of a product to be processed.

Reference numerals: 1. a die sleeve; 2. punching a hole die; 3. a product; 4. punching a guide die; 5. punching a hole rod; 6. a punching rod fixing block; 7. a push-out mechanism; 71. punching a needle sleeve; 72. pushing out the punching needle; 8. a mould frame; 81. a fastening screw; 82. a gland; 83. a die sleeve; 84. a cushion block; 9. and (3) a spring.

Detailed Description

Example 1

As shown in fig. 1 to 4, the multi-station cold heading and punching die provided by the embodiment comprises a female die and a stamping die; the female die comprises a punching guide die 4, a punching rod 5, a punching rod fixing block 6, a die carrier 8 and a spring 9. The punching guide die 4 is provided with a positioning hole which is convenient for positioning the product 3 and a punching hole a corresponding to the through hole of the product 3, the punching guide die 4 is arranged on the die frame 8 in a sliding manner, and the die frame 8 is arranged to provide a guiding function for the punching guide die 4. The punching rod 5 penetrates through the punching guide die 4 and is in sliding connection with the punching guide die 4, the punching guide die 4 plays a role in protecting and supporting the punching rod 5 during punching, the punching rod 5 is prevented from being broken in the punching process, and the service life of the punching rod 5 is prolonged. The punching rods 5 are arranged on the punching rod fixing blocks 6 in a plurality, the punching rod fixing blocks 6 are arranged on the die frame 8, and two ends of the spring 9 are respectively connected with the punching guide die 4 and the punching rod fixing blocks 6; the punching die comprises a punching die sleeve 1 and a punching die 2, wherein the punching die sleeve 1 is provided with a mounting hole for mounting the punching die 2, the punching die 2 is provided with a plurality of punching holes b for correspondingly passing through punching rods 5, and the punching die 2 and a punching guide die 4 are used for fixing a product 3 together. The punching rod 5 is a cylinder with the diameter of 4mm, the punching a and the punching b are all round with the diameter of 4mm, and the punching rod 5, the punching a and the punching b are all arranged in a round and uniform distribution way.

When the initial position of punching a hole, the cold header moves the clamp sheet to send the pre-headed product 3 into the positioning hole of the punching guide die 4. During punching, the die moves horizontally, and pressure is applied to the product 3, so that the product 3 and the punching guide die 4 move horizontally towards the punching rod 5 through the compression spring 9; at this time, the punching rod 5 is fixed on the punching rod fixing block 6, and then the six punching rods 5 respectively pass through the six punching holes a on the punching guide die 4 until the six punching rods 5 pass through the product 3 and the top end enters the punching holes b of the punching die 2, six through holes with the diameter of 4mm are punched on the product 3, and the punching die stops moving. After the punching is finished, the punching die starts to horizontally move and back, and the spring 9 resets the punched product 3 and the punching guide die 4 to the punching initial position by releasing elastic potential energy.

According to the process, when the product 3 blank is subjected to cold heading forming, a multi-station cold heading machine is used, and six through holes with the diameter of 4mm can be punched at a time. For other products 3 having different numbers or diameters of through holes, the same punching principle can be used to perform punching processing by using corresponding numbers and specifications of punching bars 5, punching a and punching b. The punching process saves the processing time and labor cost of drilling and reduces the accumulated error caused by drilling.

Example two

As shown in fig. 1 to 3, in the present embodiment, compared with the first embodiment, a waste discharge space is provided on the die sleeve 1, and a discharge space is provided on the die 2, which is communicated with the waste discharge space. During the punching process, the punching rod 5 enters the punching b and simultaneously pushes the waste material generated by the punching of the product 3 into the discharge space of the punching die 2. The waste material falls into the waste material discharge space on the die sleeve 1 through the discharge space in the punching die 2 to be led out of the cold header.

Example III

As shown in fig. 2 and 3, in the present embodiment, compared with the first embodiment, the die carrier 8 includes the fastening screw 81, the pressing cover 82, the die sleeve 83 and the cushion block 84, and the die carrier 8 is configured to provide guiding function for the punching guiding die 4. The die sleeve 83 is hollow, the cushion block 84 is arranged in the die sleeve 83, the cushion block 84 is matched with the punching rod fixing block 6 to tightly press the punching rod 5, the punching rod 5 can be conveniently replaced when the punching rod 5 is fixed in the mode, the cushion block 84 is used for adjusting the thickness of the whole die, the punching guide die 4, the punching rod 5, the punching rod fixing block 6 and the spring 9 in the die can be interchanged, the utilization rate of the die carrier 8 is increased, and the cost of die opening is reduced. The gland 82 is abutted on the cushion block 84, and the gland 82 is connected with the die sleeve 83 through the fastening screw 81. The gland 82 makes the bottom of the female die flat, increases the stress area of the cold header, and bears the reaction force generated when punching the product 3.

The periphery of the punching guide die 4 is provided with a limiting ring part, and one end of the die sleeve 83 facing the die sleeve 1 is provided with a limiting step for blocking the limiting ring part. After punching, the limiting step can enable the punching guide die 4 to reset to the top end of the female die under the action of the spring 9, and conditions are created for the next cold heading.

Example IV

As shown in fig. 1 and 2, compared with the first embodiment, the multi-station cold heading punching die provided in the present embodiment further includes an ejector mechanism 7, where the ejector mechanism 7 includes an ejector pin 72 and a pin sleeve 71 disposed at the outer periphery of the ejector pin 72. The push-out punch pin 72 sequentially penetrates through the gland 82, the cushion block 84 and the punching rod fixing block 6 and is in sliding connection with the gland 82, the cushion block 84 and the punching rod fixing block 6, and the gland 82, the cushion block 84 and the punching rod fixing block 6 provide a guiding function for the push-out punch pin 72 so as to ensure that the push-out punch pin 72 is not deformed during push-out. The punching needle 72 is pushed out towards the positioning hole on the punching guide die 4, after the punching is finished, the product 3 is pushed out of the positioning hole of the punching guide die 4, so that the next product 3 is conveniently sent into the positioning hole of the punching guide die 4 while the punched product 3 is conveniently taken out, and the full-automatic cold heading punching process is realized.

The embodiments of the present utility model have been described in detail with reference to the drawings, but the present utility model is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present utility model.

Claims

1. A multi-station cold heading punching die is characterized by comprising a female die and a stamping die;

the female die comprises a punching guide die (4), punching rods (5), punching rod fixing blocks (6), die frames (8) and springs (9), wherein positioning holes and punching holes a are formed in the punching guide die (4), the punching guide die (4) is arranged on the die frames (8) in a sliding mode, the punching rods (5) penetrate through the punching guide die (4) and are connected with the punching guide die (4) in a sliding mode, a plurality of punching rods (5) are arranged on the punching rod fixing blocks (6) in a common mode, the punching rod fixing blocks (6) are arranged on the die frames (8), and two ends of each spring (9) are connected with the punching guide die (4) and the punching rod fixing blocks (6) respectively; the punching die comprises a punching die sleeve (1) and a punching die (2), wherein the punching die sleeve (1) is provided with a mounting hole for mounting the punching die (2), and the punching die (2) is provided with a plurality of punching holes b through which punching rods (5) correspondingly pass.

2. The multi-station cold heading and punching die according to claim 1, wherein the punching rod (5) is a cylinder, the punching a and the punching b are round, and the punching rod (5), the punching a and the punching b are uniformly distributed in a round shape.

3. A multi-station cold heading and punching die according to claim 1 or 2, characterized in that the diameters of the punching bar (5), the punching a and the punching b are all 4mm.

4. The multi-station cold heading punching die according to claim 1, wherein the die sleeve (1) is provided with a waste discharge space, and the punching die (2) is provided with a discharge space communicated with the waste discharge space.

5. A multi-station cold heading and punching die according to claim 1, characterized in that the die carrier (8) comprises a fastening screw (81), a gland (82), a die sleeve (83) and a cushion block (84); the die sleeve (83) is hollow, and the cushion block (84) is arranged in the die sleeve (83); the gland (82) is connected to the cushion block (84), and the gland (82) is connected with the female die sleeve (83) through the fastening screw (81).

6. The multi-station cold heading and punching die according to claim 5, wherein the periphery of the punching guide die (4) is provided with a limiting ring part, and one end of the die sleeve (83) facing the die sleeve (1) is provided with a limiting step for blocking the limiting ring part.

7. The multi-station cold heading and punching die according to claim 5, further comprising an ejection mechanism (7), wherein the ejection mechanism (7) comprises an ejection punch needle (72) and a punch needle sleeve (71) arranged on the ejection punch needle (72); the pushing-out punching needle (72) sequentially penetrates through the gland (82), the cushion block (84) and the punching rod fixing block (6) and is in sliding connection with the gland (82), the cushion block (84) and the punching rod fixing block (6), and the pushing-out punching needle (72) faces to a positioning hole on the punching guide die (4).