CN110252886B

CN110252886B - Stamping process of hardware

Info

Publication number: CN110252886B
Application number: CN201910549171.2A
Authority: CN
Inventors: 葛杨波; 杨海涛; 陈家平
Original assignee: Kunshan Vekan Electronic Technology Co ltd; Shanghai Weiheng Precision Electronic Co ltd
Current assignee: Kunshan Vekan Electronic Technology Co ltd; Shanghai Weiheng Precision Electronic Co ltd
Priority date: 2019-06-24
Filing date: 2019-06-24
Publication date: 2020-06-09
Anticipated expiration: 2039-06-24
Also published as: CN110252886A

Abstract

A stamping process of hardware comprises the working procedures of punching, bending adjustment, 90-degree bending, 135-degree bending, 180-degree bending, bump forming and the like. The process designed by the invention has the advantages that the material is molded in place through one process, the high-precision product is obtained by pre-bending, the design standard is met, compared with the traditional method of quickly bending in place, the deformation is less, the precision is high, repeated reshaping is not required by classification, the labor cost is reduced, the relative efficiency is higher, the cost is lower, and the practicability is high.

Description

Stamping process of hardware

Technical Field

The invention relates to the field of die machining, in particular to a stamping process of hardware.

Background

The punching process is based on the plastic deformation of metal and applies pressure to the sheet material with the mold and punching equipment to make the sheet material produce plastic deformation or separation so as to obtain the parts (punched parts) with certain shape, size and performance.

At present, a hardware part for a mobile phone needs to be processed, the shape of a finished product is shown in fig. 12, the hardware part comprises a part body, a lock screw hole is formed in the part body, a plurality of convex points are arranged around the lock screw hole, one end of the part body is provided with a bending part, the other end of the part body is also provided with a plurality of bends, one bend is parallel to the part body, and therefore the hardware part is relatively complex to process and cannot be formed by bending at one time, the design standard of the part is high, and the existing forming process is difficult to achieve the design standard of the part; therefore, a special stamping process is designed for the part to solve the above problems.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide a stamping process of hardware.

In order to achieve the above objects and other related objects, the present invention provides the following technical solutions: a stamping process of hardware comprises a part body, wherein a lock screw hole is formed in the part body, a circle of convex points are arranged around the lock screw hole, one end of the part body is provided with a bending part, the other end of the part body is provided with a plurality of bending parts, one plate is bent to be parallel to the part body, and the stamping process comprises a first die, a second die, a third die, a fourth die, a fifth die, a sixth die, a seventh die, an eighth die, a ninth die and a tenth die;

the first die comprises a first stripping plate insert, a first blanking punch penetrating through and moving up and down and arranged in the middle of the first stripping plate insert and a first blanking knife edge arranged below the first stripping plate insert;

the second die comprises a second stripping part, a second forming punch arranged in the second stripping part in a vertically moving mode and a second lower die forming part arranged below the second stripping part, an angular groove is formed in the upper end of the second lower die forming part, and the lower end of the second forming punch is arranged corresponding to the angular groove of the second lower die forming part;

the third die comprises a third stripping part, a third forming punch which is vertically moved and arranged in the third stripping part and a third lower die forming part which is arranged below the third stripping part, and the upper end of the third lower die forming part is step-shaped;

the fourth die comprises a fourth stripper part, a fourth adjusting punch which is vertically moved and arranged in the fourth stripper part, and a fourth lower die forming part which is arranged below the fourth stripper part, and the upper end of the fourth lower die forming part is step-shaped;

the fifth die comprises a fifth stripping forming part, a fifth lower die floating block part arranged below the fifth stripping forming part, a fifth lower die forming part arranged on one side of the fifth lower die floating block part, a fifth lower base plate arranged below the fifth lower die floating block part and the fifth lower die forming part, a fifth force transmission pin vertically penetrating through the fifth lower base plate and a fifth lower die spring arranged at the lower end of the fifth force transmission pin, wherein the upper end of the fifth force transmission pin is abutted against the fifth lower die floating block part, and the lower end of the fifth stripping forming part is step-shaped;

the sixth die comprises a sixth stripping and shaping part, a sixth forming punch which is vertically moved and arranged in the sixth stripping and shaping part, and a sixth lower die part which is arranged below the sixth stripping and shaping part, wherein the upper end surface of the sixth lower die part is provided with a plurality of steps, and the lower end of the sixth forming punch is in a trapezoidal shape;

the seventh mould comprises a seventh stripping part, a seventh forming punch arranged in the seventh stripping part in a vertically moving mode and a seventh lower mould forming part arranged below the seventh stripping part, the upper end face of the seventh lower mould forming part is provided with a plurality of steps, and the lower end face of the seventh forming punch is step-shaped;

the eighth mould comprises an eighth stripping part, an eighth forming punch which is vertically moved and arranged in the eighth mould and an eighth lower mould forming part which is arranged below the eighth stripping part, and the lower end surface of the eighth forming punch is step-shaped;

the ninth mold comprises a ninth stripping part, a ninth lower mold floating block arranged below the ninth stripping part, a ninth fixed seat arranged below the ninth lower mold floating block, a ninth lower cushion plate arranged below the ninth fixed seat, a ninth lower mold forming part vertically penetrating through the ninth lower mold floating block and the ninth fixed seat, a ninth lower mold jacking pin vertically penetrating through the ninth fixed seat and the ninth lower cushion plate and a ninth lower mold spring arranged at the lower end of the ninth lower mold jacking pin, wherein the upper end of the ninth lower mold spring is abutted against the ninth lower mold floating block;

the tenth die comprises a tenth stripper part, a tenth punch part arranged in the tenth stripper part in a vertically moving mode, and a tenth lower die blade arranged below the tenth stripper part;

the stamping process comprises the following steps:

the method comprises the following steps: placing the first material into the first die, enabling the first die to run until the first die is completely closed, and opening the first die to obtain a second punched material;

step two: placing a second material into the second mold, enabling the second mold to run until the second mold is completely closed, and opening the second mold to obtain a third material after the third material is bent for the first time, wherein the bending angle is an acute angle;

step three: placing a third material into the third mold, enabling the third mold to run until the third mold is completely closed, and opening the third mold to obtain a fourth material after the fourth bending, wherein the bending angle is 90 degrees;

step four: placing a material IV in the fourth mold, enabling the fourth mold to run until the fourth mold is completely closed, and opening the fourth mold to obtain an angularly adjusted material V;

step five: placing a fifth material into the fifth mold, enabling the fifth mold to run until the fifth mold is completely closed, and opening the fifth mold to obtain a sixth material after the sixth bending, wherein the bending angle is 90 degrees;

step six: placing a material six in the sixth mold, enabling the sixth mold to run to be completely closed, and opening the sixth mold to obtain a material seven after the fourth bending, wherein the bending angle is 135 degrees;

step seven: placing a material seventh in the seventh mold, operating the seventh mold to be completely closed, opening the seventh mold, and obtaining a material eighth after fifth bending, wherein the bending angle is 180 degrees;

step eight: placing a material eight in the eighth mold, operating the eighth mold until the eighth mold is completely closed, and opening the eighth mold to obtain a material nine which is bent for the sixth time, wherein the bending angle is 90 degrees;

step nine: placing a material nine in the ninth mold, enabling the ninth mold to run to be completely closed, and opening the ninth mold to obtain a bump-formed material ten;

step ten: placing material ten into the tenth mold, running the tenth mold to full closure, opening the tenth mold, and obtaining the product.

The preferable technical scheme is as follows: the fourth mould is provided with a fourth adjusting rod, the right end of the fourth adjusting rod and the upper end of the fourth adjusting punch are wedge-shaped and are abutted, the fourth adjusting rod is arranged above the fourth upper die fixing plate, and one end of the fourth adjusting rod is connected with the fourth upper die fixing plate in a left-right mode through a fourth adjusting screw.

Due to the application of the technical scheme, compared with the prior art, the invention has the advantages that:

the invention adopts various dies to sequentially carry out the processes of punching, bending adjustment, 90-degree bending, 135-degree bending, 180-degree bending, bump forming and the like, the material is formed in place for each structure through one process, a high-precision product is obtained by adopting pre-bending, the design standard is met, compared with the traditional method, the method has the advantages of rapid bending in place, less deformation, high precision, no need of classification and repeated reshaping, labor cost reduction, higher relative efficiency, lower cost and high practicability.

Drawings

Fig. 1 is a schematic view of a first mold in a processing state.

Fig. 2 is a schematic view of a second mold in a processing state.

Fig. 3 is a schematic view of a third mold in a processing state.

Fig. 4 is a schematic view of a fourth mold in a processing state.

Fig. 5 is a schematic view of a fifth mold in a processing state.

Fig. 6 is a schematic view of a sixth mold in a processing state.

Fig. 7 is a schematic view of a seventh mold in a processing state.

Fig. 8 is a schematic view of an eighth mold in a processing state.

Fig. 9 is a schematic view of a ninth mold in a processing state.

Fig. 10 is a schematic view of a tenth mold in a processing state.

Fig. 11 is a schematic view of a fourth mold adjustment structure.

Fig. 12 is a schematic view of the finished part.

Fig. 13 is a schematic diagram of the process and material shape change.

In the above drawings, a first material 101, a first blanking punch 102, a first stripper insert 103, a first blanking edge 104, a second material 201, a second forming punch 202, a second stripper part 203, a second lower die forming part 204, a third material 301, a third forming punch 302, a third stripper part 303, a third lower die forming part 304, a fourth material 401, a fourth adjusting punch 402, a fourth stripper part 403, a fourth lower die forming part 404, a fourth adjusting screw 405, a fourth adjusting rod 406, a fourth upper die fixing plate 407, a fifth material 501, a fifth stripper forming part 502, a fifth lower die floating block part 503, a fifth lower die forming part 504, a fifth lower backing plate 505, a fifth lower die force transmitting pin 506, a fifth lower die spring 507, a sixth material 601, a sixth forming punch 602, a sixth stripper punch 603, a sixth lower die part 604, a seventh material 701, a seventh forming punch 702, a seventh stripper part 703, a seventh lower die molding part 704, a material eight 801, an eighth molding punch 802, an eighth stripper part 803, an eighth lower die molding part 804, a material nine 901, a ninth stripper part 902, a ninth lower die floating block 903, a ninth lower die molding part 904, a ninth fixing seat 905, a ninth lower die knock-out pin 906, a ninth lower backing plate 907, a ninth lower die spring 908, a material ten 1001, a tenth punch part 1002, a tenth stripper part 1003, and a tenth lower die blade 1004.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

Please refer to fig. 1 to 13. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

Example (b): as shown in fig. 1 to 13, a stamping process for a hardware includes a part body, a lock screw hole is formed in the part body, a circle of convex points are arranged around the lock screw hole, one end of the part body is provided with a bending part, the other end of the part body is provided with a plurality of bending parts, one plate is bent to be parallel to the part body, and the stamping process includes a first die, a second die, a third die, a fourth die, a fifth die, a sixth die, a seventh die, an eighth die, a ninth die and a tenth die;

as shown in fig. 1, the first mold comprises a first stripping insert 103, a first blanking punch 102 penetrating through and moving up and down and arranged in the middle of the first stripping insert 103, and a first blanking blade 104 arranged below the first stripping insert 103;

as shown in fig. 2, the second mold comprises a second stripping part 203, a second forming punch 202 arranged in the second stripping part 203 in a vertically moving manner, and a second lower mold forming part 204 arranged below the second stripping part 203, wherein an angular groove is formed at the upper end of the second lower mold forming part 204, and the lower end of the second forming punch 202 is arranged corresponding to the angular groove of the second lower mold forming part 204;

as shown in fig. 3, the third mold includes a third stripping part 303, a third forming punch 302 arranged in the third stripping part 303 to move up and down, and a third lower mold forming part 304 arranged below the third stripping part 303, and the upper end of the third lower mold forming part 304 is stepped;

as shown in fig. 4, the fourth mold includes a fourth stripper part 403, a fourth adjusting punch 402 disposed inside the fourth stripper part 403 to move up and down, and a fourth lower mold forming part 404 disposed below the fourth stripper part 403, the upper end of the fourth lower mold forming part 404 being stepped;

as shown in fig. 5, the fifth mold includes a fifth stripping forming part 502, a fifth lower floating block part 503 disposed below the fifth stripping forming part 502, a fifth lower forming part 504 disposed on one side of the fifth lower floating block part 503, a fifth lower pad 505 disposed below the fifth lower floating block part 503 and the fifth lower forming part 504, a fifth force transfer pin 506 vertically penetrating through the fifth lower pad 505, and a fifth lower spring 507 disposed at a lower end of the fifth force transfer pin 506, wherein an upper end of the fifth force transfer pin 506 is disposed against the fifth lower floating block part 503, and a lower end of the fifth stripping forming part 502 is stepped;

as shown in fig. 6, the sixth mold includes a sixth stripping and shaping part 603, a sixth forming punch 602 disposed in the sixth stripping and shaping part 603 in a vertically moving manner, and a sixth lower mold part 604 disposed below the sixth stripping and shaping part 603, the upper end surface of the sixth lower mold part 604 is provided with multiple steps, and the lower end of the sixth forming punch 602 is in a trapezoidal shape;

as shown in fig. 7, the seventh mold includes a seventh stripper part 703, a seventh forming punch 702 disposed in the seventh stripper part 703 to move up and down, and a seventh lower mold forming part 704 disposed below the seventh stripper part 703, an upper end surface of the seventh lower mold forming part 704 is provided with a multi-step, and a lower end surface of the seventh forming punch 702 is stepped;

as shown in fig. 8, the eighth mold comprises an eighth stripping part 803, an eighth forming punch 802 arranged in the eighth mold in a vertically moving manner, and an eighth lower mold forming part 804 arranged below the eighth stripping part 803, wherein the lower end surface of the eighth forming punch 802 is step-shaped;

as shown in fig. 9, the ninth mold includes a ninth stripper part 902, a ninth lower floating block 903 disposed below the ninth stripper part 902, a ninth fixing seat 905 disposed below the ninth lower floating block 903, a ninth lower pad 907 disposed below the ninth fixing seat 905, a ninth lower mold molding part 904 vertically penetrating through the ninth lower floating block 903 and the ninth fixing seat 905, a ninth lower lift pin 906 vertically penetrating through the ninth fixing seat 905 and the ninth lower pad 907, and a ninth lower mold spring 908 disposed at a lower end of the ninth lower lift pin 906, an upper end of the ninth lower mold spring 908 being disposed against the ninth lower floating block 903;

as shown in fig. 10, the tenth die includes a tenth stripper part 1003, a tenth punch part 1002 disposed inside the tenth stripper part 1003 to move up and down, and a tenth lower die blade 1004 disposed below the tenth stripper part 1003;

the stamping process (shown in fig. 13) includes the following steps:

the method comprises the following steps: as shown in fig. 1, placing a first material 101 in a first die, allowing the first die to run until the first die is completely closed, and opening the first die to obtain a second punched material 201;

step two: as shown in fig. 2, placing a second material 201 in a second mold, allowing the second mold to run until the second mold is completely closed, and opening the second mold to obtain a third material 301 after the first bending, wherein the bending angle is an acute angle; when the second mold is closed, the second stripping part 203 is in contact with the second material 201 and is in contact with the second lower mold forming part 204 in the descending process, the second forming punch 202 continues to descend until the second mold is completely closed after the second material 201 is compressed, bending forming is completed, when the second mold is opened, the second forming punch 202 retracts first, then the second stripping part 203 is separated from the second material 201, and one cycle of forming action is completed.

Step three: as shown in fig. 3, placing a third material 301 in a third mold, allowing the third mold to run until the third mold is completely closed, and opening the third mold to obtain a fourth material 401 after the second bending, wherein the bending angle is 90 degrees; when the third mold is closed, the third stripping part 303 is in contact with the third material 301, and is in contact with the third lower mold forming part 304 in the descending process, after the third material 301 is compressed, the third forming punch 302 continues to descend until the third mold is completely closed, so that bending forming is completed, when the third mold is opened, the third forming punch 302 retracts first, then the third stripping part 303 is separated from the third material 301, and a cycle of forming action is completed.

Step four: as shown in fig. 4, the material four 401 is placed in a fourth mold, the fourth mold is operated to be completely closed, and the fourth mold is opened to obtain an angle-adjusted material five 501; when the fourth die is closed, the fourth stripping part 403 is in contact with the fourth material 401, and is in contact with the fourth lower die forming part 404 in the descending process, the fourth forming punch continues to descend to the complete closing of the fourth die after the fourth material 401 is compressed, and the angle of the product is adjusted through the height of the fourth adjusting punch 402 during closing.

Step five: as shown in fig. 5, a fifth material 501 is placed in a fifth mold, the fifth mold is operated to be completely closed, and the fifth mold is opened to obtain a sixth material 601 after the third bending, wherein the bending angle is 90 degrees; the fifth die moves downwards from the die opening state, the fifth stripper forming part 502 contacts the fifth material 501 firstly to finish material pressing, the fifth die continues to be closed downwards, the fifth material 501 contacts the fifth lower die floating block part 503, the fifth die continues to move downwards, the fifth die continues to be closed, and the fifth lower die forming part 504 and the fifth stripper forming part 502 finish upward bending forming of products.

Step six: as shown in fig. 6, a sixth material 601 is placed in a sixth mold, the sixth mold is operated to be completely closed, and the sixth mold is opened, so that a material seven 701 after fourth bending is obtained, wherein the bending angle is 135 degrees; the sixth die moves downwards from the die opening state, the sixth stripper forming part contacts the material six 601 firstly to complete material pressing, the sixth die is continuously closed downwards, the sixth forming punch 602 contacts the material six 601, the sixth die continues to move downwards, the head of the sixth forming punch 602 is in an oblique angle structure, the workpiece slides along the inclined plane of the sixth forming punch 602, the sixth die is continuously closed, the sixth forming punch 602 continues to move downwards to complete 135-degree bending forming.

Step seven: placing a seventh piece of material 701 in a seventh mold, moving the seventh mold to full closure, opening the seventh mold, and obtaining a fifth-folded piece of material eight 801, wherein the folding angle is 180 degrees, as shown in fig. 7; the seventh die moves downwards from the die opening state, the seventh stripper forming part contacts the material seven 701 firstly to finish pressing, the seventh die is continuously closed downwards, the seventh forming punch 702 contacts the material seven 701, the seventh die continues to move downwards, the material seven 701 finishes 135-degree bending, the seventh die continues to be closed, the seventh forming punch 702 continues to move downwards to finish 180-degree bending forming.

Step eight: as shown in fig. 8, placing eight 801 of the material in an eighth mold, operating the eighth mold until the eighth mold is completely closed, and opening the eighth mold to obtain nine 901 of the material after the sixth bending, wherein the bending angle is 90 °;

step nine: as shown in fig. 9, a ninth material 901 is placed in a ninth mold, the ninth mold is operated to be completely closed, and the ninth mold is opened to obtain a bump-formed material ten 1001; when the ninth mold is opened, the ninth lower mold floating block 903 floats upwards under the action of the ninth lower mold spring 908, the ninth mold moves downwards, the ninth stripper part 902 is in contact with the material nine 901 to finish product pressing, the upper mold continues to move, the ninth stripper part 902 and the lower mold are closed to finish convex hull molding.

Step ten: as shown in fig. 10, a material ten 1001 is placed in a tenth mold, the tenth mold is operated to be completely closed, and the tenth mold is opened to obtain a product; when the tenth die is opened, the material ten 1001 is fed in place, the tenth die descends, the tenth stripper part 1003 contacts the material ten 1001 firstly, along with the descending of the upper die, the material ten 1001 contacts the tenth lower die knife edge 1004 to complete the positioning of the material ten 1001 and compress the material ten 1001, the lower die continues to descend, the tenth punch part 1002 and the tenth lower die knife edge 1004 complete the cutting of the product, the product is separated from the tenth lower die knife edge 1004, and the product is completed.

The preferred embodiment is: as shown in fig. 11, the fourth mold is provided with a fourth adjusting rod 406, the right end of the fourth adjusting rod 406 and the upper end of the fourth adjusting punch 402 are both wedge-shaped and are in contact arrangement, the fourth adjusting rod 406 is arranged above the fourth upper mold fixing plate 407, and one end of the fourth adjusting rod 406 is connected with the fourth upper mold fixing plate in a left-right movement manner through a fourth adjusting screw 405.

Description of the adjustment: the transverse feeding amount of the fourth adjusting rod 406 is controlled by the fourth adjusting screw 405, the contact part of the fourth adjusting rod 406 and the fourth adjusting punch 402 has an inclined surface of 3-5 degrees, the fourth adjusting punch 402 moves longitudinally, and the more the fourth adjusting rod 406 is fed, the more the fourth adjusting punch 402 descends when the fourth die is closed, so that the angle adjustment of the product workpiece is completed.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The utility model provides a stamping process of hardware, this hardware includes the part body, is provided with the lock screw hole on the part body, set up the round bump around the lock screw hole, the one end of part body sets up one department of bending, the other end set up a plurality of department of bending and one of them panel bend into with the part body is parallel, its characterized in that: the stamping process comprises a first die, a second die, a third die, a fourth die, a fifth die, a sixth die, a seventh die, an eighth die, a ninth die and a tenth die;

the stamping process comprises the following steps:

2. The stamping process of hardware as claimed in claim 1, wherein: the fourth mould is provided with a fourth adjusting rod, the right end of the fourth adjusting rod and the upper end of the fourth adjusting punch are wedge-shaped and are abutted, the fourth adjusting rod is arranged above the fourth upper die fixing plate, and one end of the fourth adjusting rod is connected with the fourth upper die fixing plate in a left-right mode through a fourth adjusting screw.