Material belt stamping die

Abstract

The utility model provides a material belt stamping die which comprises a stamping head module, a stamping sleeve and a female die, the stamping head module comprises a plurality of stamping heads arranged side by side, and a distance slightly larger than the width of a pin is formed between every two adjacent stamping heads; the stamping head module is sleeved with the stamping sleeve, and the stamping sleeve and the stamping head module are connected in a sliding mode capable of adjusting the relative position. A stamping head of the stamping head module is connected with a stamping groove in the female die in a matched mode to form a stamping connection relation, and the bottom face of the stamping head of the stamping head module is an inclined face with the front height and the rear height different. And the position of the front end of the bottom of the stamping head corresponding to the head of the pin is higher than the position of the rear end of the bottom of the stamping head corresponding to the root of the pin, so that the bottom surface of the stamping head forms an inclined surface. According to the material belt stamping die provided by the utility model, the service life of the die can be greatly prolonged; and moreover, the punching efficiency is improved by more than one time, and the productivity is doubled under the condition of the same equipment configuration.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicles, in particular to a material strip stamping die for motor pins on a 48V new energy vehicle. Background Art

[0002] The traditional structure of the motor pins on 48V new energy vehicles is a long straight pin structure. Based on the traditional pin structure, it has been modified to form the following Figure 1-2 The structure shown. After the modification of the pin structure, the root of the needle is changed from straight to curved, and the width of the root is changed from equal width to a change with a neck. This results in the traditional stamping die and stamping process not being able to meet the stamping requirements of the pin. With the traditional stamping process, the bottom surface of the stamping head is flat, the PIN chamfer square is required for the die block, and optical grinding (PG) is required for maintenance, and the service life of the mold can only meet the working requirements of 200,000 to 300,000 times. Utility Model Content

[0003] The technical problem to be solved by the embodiment of the present utility model is to provide a material strip stamping die, which solves the problem that the die used in the conventional stamping process can only meet the working requirement of 200,000 to 300,000 times for stamping the modified motor pins. The stamping die designed by the utility model can extend the service life to 700,000 times under the working conditions of the same stamping tonnage.

[0004] In order to solve the above technical problems, the utility model provides a material strip stamping die, including a stamping head module, a stamping sleeve and a die, wherein the stamping head module includes a plurality of stamping heads arranged side by side, and a spacing slightly larger than the width of a pin is formed between two adjacent stamping heads; the stamping sleeve is sleeved on the stamping head module, and a sliding connection with an adjustable relative position is adopted between the stamping head module; the stamping head of the stamping head module is adaptively connected to the stamping groove on the die to form a stamping connection relationship, wherein the bottom surface of the stamping head of the stamping head module is an inclined surface with different front and rear heights, and the height of the front end of the bottom of the stamping head corresponding to the head of the pin pin is higher than the height of the rear end of the bottom of the stamping head corresponding to the root of the pin pin, thereby forming an inclined surface on the bottom surface of the stamping head.

[0005] The depth of the front end of the punch head inserted into the punching groove is greater than the thickness of the pin pin, and the depth of the rear end of the punch head inserted into the punching groove is less than the thickness of the pin pin.

[0006] The depth of the rear end of the punch head inserted into the punching groove is greater than 0.7 times the thickness of the pin.

[0007] An auxiliary presser foot block is arranged on the bottom surface of the punching sleeve, corresponding to the position of the front end of the punching head, between two adjacent punching heads.

[0008] The auxiliary presser foot block is a wedge-shaped structure, and the maximum thickness does not exceed one third of the thickness of the pin.

[0009] The rear end of the punch head is in a curved shape, which matches the root shape of the pin.

[0010] The length of the front end of the punching head located at both ends is greater than the length of the front end of the punching head located at the middle position.

[0011] A guide hole is also provided on the outer side of the stamping groove of the die.

[0012] The material strip stamping die provided by the utility model can greatly increase the service life of the die from 200,000 to 300,000 times to 700,000 times when stamping the modified pin pins; and increase the stamping efficiency by more than double, achieving doubling of the production capacity under the condition of the same equipment configuration; and due to the extended service life, the maintenance cost of the equipment can be greatly reduced, the work efficiency is improved, and the product quality is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the modified pin pins.

[0014] Figure 2 for Figure 1 A local enlarged schematic diagram of the .

[0015] Figure 3 It is a structural schematic diagram of the material strip stamping die of the utility model.

[0016] Figure 4 It is a structural schematic diagram of the material strip stamping die of the utility model.

[0017] Figure 5 It is a structural schematic diagram of the material strip stamping die of the utility model.

[0018] Figure 6 It is a partial enlarged schematic diagram of the punch head die set and the punch sleeve.

[0019] 1- material strip; 11- pin; 12- root of the pin;

[0020] 21-punching head die set; 211-punching head; 22-punching sleeve; 221-auxiliary presser foot block; 23-die; 231-punching groove. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0024] like Figure 3-5 As shown, the utility model provides a strip stamping die for stamping a strip into a Figure 1-2The pin pin structure shown in the figure, the material strip stamping die includes a stamping head module 21, a stamping sleeve 22 and a die 23, wherein the stamping head module 21 includes a plurality of stamping heads 211 arranged side by side, and a spacing slightly larger than the width of the pin pin is formed between two adjacent stamping heads 211; the stamping sleeve 22 is sleeved on the stamping head module 21, and a sliding connection with the stamping head module 21 is adopted with an adjustable relative position; the stamping head 211 of the stamping head module 21 is adaptively connected with the stamping groove 231 on the die 23 to form a stamping connection relationship, wherein the bottom surface of the stamping head 211 of the stamping head module 21 is an inclined surface with different front and rear heights, and the height of the front end of the bottom of the stamping head 211 corresponding to the head of the pin pin is higher than the height of the rear end of the bottom of the stamping head 211 corresponding to the root of the pin pin, so that the bottom surface of the stamping head 211 forms an inclined surface. When the entire punch head is punching the material strip downward, the bottom front end of the punch head first contacts the material strip, forming a punching pressure on the material strip; when the punch head continues to punch downward, the bottom front end of the punch head first forms a punching and cutting force on the material strip, so that the material strip at the bottom of the punch head is punched and cut downward, and then as the inclined surface of the bottom of the punch head gradually contacts the material strip, the punching and cutting force of the punch head on the material strip gradually moves backward; thereby, on the one hand, the material strip at the front end of the punch head is formed with an incision and separated, and on the other hand, it ensures that the material strip at the rear end of the punch head is punched but not separated from the material strip.

[0025] The material strip stamping die provided by the utility model can greatly increase the service life of the die from 200,000 to 300,000 times to 700,000 times when stamping the modified pin pins; and increase the stamping efficiency by more than double, achieving doubling of the production capacity under the condition of the same equipment configuration; and due to the extended service life, the maintenance cost of the equipment can be greatly reduced, the work efficiency is improved, and the product quality is improved.

[0026] The depth of the front end of the punch head 211 inserted into the punch groove 231 is greater than the thickness of the pin, and the depth of the rear end of the punch head 211 inserted into the punch groove 231 is less than the thickness of the pin. Therefore, after the punch head 211 enters the punch groove 231, the material strip at the front end of the punch head 211 is separated, while the material strip at the rear end of the punch head 211 is not separated.

[0027] The depth of the punch head 211 inserted into the punch groove 231 is greater than 0.7 times the thickness of the pin pin, thereby ensuring that the thickness of the strip connection at the rear end of the punch head 211 is less than 0.3 times the overall thickness of the strip, making it easier to infer waste materials in the next process.

[0028] On the bottom surface of the punching sleeve 22 , corresponding to the position of the front end of the punching head 211 , an auxiliary presser foot block 221 is arranged between two adjacent punching heads.

[0029] The auxiliary presser foot block 221 is a wedge-shaped structure, and the maximum thickness does not exceed one third of the thickness of the plug pin. The main function of the auxiliary presser foot block 221 is to cooperate with the punch head to squeeze the head of the plug pin to deform it into an inclined surface.

[0030] The rear end of the punch head 211 is in a curved shape, which matches the root shape of the pin.

[0031] The length of the front end of the punch head 211 at both ends is greater than the length of the front end of the punch head 211 at the middle position.

[0032] A guide hole 232 is provided on the outside of the stamping groove 231 of the die 23. The guide hole 232 can be aligned with the guide hole on the material strip, so as to determine the position of the material strip advancing to the guide hole 232 for alignment and positioning operation, thereby avoiding displacement or lateral movement of the material strip during the stamping process.

[0033] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0034] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A material strip stamping die, comprising a stamping head die set, a stamping sleeve and a die, wherein the stamping head die set comprises a plurality of stamping heads arranged side by side, and a spacing slightly larger than the width of a pin is formed between two adjacent stamping heads; characterized in that: The punching sleeve is sleeved on the punching head die set, and a sliding connection with the punching head die set is adopted with an adjustable relative position; the punching head of the punching head die set is adaptively connected with the punching groove on the die to form a punching connection relationship, wherein the bottom surface of the punching head of the punching head die set is an inclined surface with different front and rear heights, and the height of the front end of the bottom of the punching head corresponding to the head of the pin pin is higher than the height of the rear end of the bottom of the punching head corresponding to the root of the pin pin, thereby forming an inclined surface on the bottom surface of the punching head.

2. The strip stamping die according to claim 1, characterized in that: The depth of the front end of the punch head inserted into the punching groove is greater than the thickness of the pin pin, and the depth of the rear end of the punch head inserted into the punching groove is less than the thickness of the pin pin.

3. The strip stamping die according to claim 2, characterized in that: The depth of the rear end of the punch head inserted into the punching groove is greater than 0.7 times the thickness of the pin.

4. The strip stamping die according to claim 1, characterized in that: An auxiliary presser foot block is arranged on the bottom surface of the punching sleeve, corresponding to the position of the front end of the punching head, between two adjacent punching heads.

5. The strip stamping die according to claim 4, characterized in that: The auxiliary presser foot block is a wedge-shaped structure, and the maximum thickness does not exceed one third of the thickness of the pin.

6. The strip stamping die according to claim 1, characterized in that: The rear end of the punch head is in a curved shape, which matches the root shape of the pin.

7. The strip stamping die according to claim 1, characterized in that: The length of the front end of the punching head located at both ends is greater than the length of the front end of the punching head located at the middle position.

8. The strip stamping die according to claim 1, characterized in that: A guide hole is also provided on the outer side of the stamping groove of the die.

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