Modularized fine blanking die for metal communication box shell

Abstract

The utility model discloses a modularized fine stamping die for a metal communication box shell, which comprises a die holder, a lower die plate, a modularized lower stamping plate, a modularized upper stamping block, an upper die plate, a pressing die plate and a lower stamping block used for pushing the communication box shell. The modular lower punching plate is arranged in a positioning groove in the upper end face of the lower die plate, is accurately matched with the lower die plate through a positioning pin and is tightly connected with the lower die plate through a connecting piece, the modular lower punching plate is provided with an upwards-protruding diagonal plane right facing each punching opening, and the diagonal planes right face the complete periphery of a rough blank to be punched and blanked to achieve comprehensive punching. According to the modular fine punching die for the metal communication box shell, the precision of punching the excess materials on the edge of the communication box shell is guaranteed, the percent of pass of finished products is increased, and the modular fine punching die is practical and convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of die equipment, and particularly relates to a modular fine blanking die for the shell of a metal communication box. Background Art

[0002] A communication box made of metal used in communication engineering is used to ensure that the internal electric control signal is not interfered by external electromagnetic waves. Due to the precision requirements of the assembly process, after casting and molding, it is necessary to perform fine milling on the assembly end face of the rough blank of the communication box lid, and cut off the shunt channel forming block for casting connection. Therefore, we need to design a precision punching die for the rough blank of the communication box lid to ensure the accurate punching of the surplus material at the edge of the rough blank and ensure that the fine milling accuracy of the finished communication box lid meets the standard. Content of the Utility Model

[0003] The purpose of the utility model is: to meet the technical requirements of ensuring the accurate punching of the surplus material at the edge of the rough blank and ensuring that the fine milling accuracy of the finished communication box lid meets the standard. We design and provide a modular fine blanking die for the shell of a metal communication box.

[0004] The technical solution adopted to solve the above problems is:

[0005] A modular fine blanking die for the shell of a metal communication box includes a die base, a lower template, a modular lower punching plate, a modular upper punching block, an upper template, a pressing template, and a lower punching block for pushing the communication box shell. A guide pillar and guide sleeve assembly is arranged between the punching die base and the pressing template to ensure that the lower template and the upper template stacked layer by layer perform lifting and pressing actions with extremely high precision.

[0006] The modular lower punching plate is arranged in the positioning groove on the upper end face of the lower template, and is precisely matched with the lower template through positioning pins and tightly connected by a connecting piece. The modular lower punching plate is provided with an upward convex inclined plane facing each punching port. The inclined plane performs full punching on the complete outer circumference of the rough blank to be punched and cut, and performs fine punching on the surplus material at the edge of the rough blank to be punched and cut.

[0007] A lower punching block is in clearance fit in each punching port. The upper end face of the lower punching block is provided with a positioning platform and a positioning groove that fit the concave and convex shape of the lower surface of the communication box shell to be punched. Correspondingly, the lower end face of the upper template is provided with a limiting groove, and the modular upper punching block is fitted in the limiting groove. The modular upper punching block is provided with a modular upper punching block facing all the lower punching blocks. The modular upper punching block applies a pressing force to the upper surface of the communication box shell to be punched and is provided with a positioning platform and a positioning groove that fit the concave and convex shape of the upper surface of the communication box shell to be punched.

[0008] Furthermore, a plurality of ejector rods are arranged in the center of the lower punching block, and the ejector rods are provided with ejecting driving force by a hydraulic cylinder of the die set.

[0009] Further, a plurality of positioning blocks for positioning the communication box housing to be punched are arranged on the upper end surface of the lower punch block to ensure the precise positioning of the special-shaped communication box housing.

[0010] Further, the modular lower punch plate and the modular upper punch plate can be replaced with new plates in real time according to the punching amount and wear degree to ensure the accuracy of the edge surplus of the punched communication box housing and improve the qualified rate of finished products.

[0011] The beneficial effects of the utility model are as follows:

[0012] The modular fine blanking die for the metal communication box housing ensures that the punching die is always new through the replaceable modular lower punch plate and modular upper punch plate, and the lower punch block and the modular upper punch plate are used to perform double-sided positioning of the communication box housing to be punched up and down. The inclined cutting surface is used to perform precise punching on the edge surplus, and after punching and blanking, the precisely punched communication box housing is lifted and discharged by means of a pushing mechanism, ensuring the accuracy of the edge surplus of the punched communication box housing, improving the qualified rate of finished products, and being practical and convenient. Description of the drawings

[0013] Figure 1 It is a structural schematic diagram of the modular fine blanking die for the metal communication box housing in the embodiment;

[0014] Figure 2 It is Figure 1 The assembly structural schematic diagram of the modular lower punch plate described in ;

[0015] Figure 3 It is a structural schematic diagram of the modular upper punch plate described in the embodiment;

[0016] Figure 4 It is Figure 2 The partial enlarged view at A in ;

[0017] Figure 5 It is Figure 3 The partial enlarged view at B in ;

[0018] Figure 6 It is Figure 3 The structural schematic diagram of the modular lower punch plate described in ;

[0019] Figure 7 It is a structural schematic diagram of the communication box housing described in the embodiment;

[0020] Among them, 1 - pressure template, 2 - guide pillar and bushing assembly, 3 - upper template, 4 - lower template, 5 - die base, 6 - modular upper punch block, 7 - modular lower punch plate, 8 - auxiliary positioning guide rod, 9 - communication box housing, 10 - limit groove, 11 - ejector rod, 12 - lower punch block, 13 - first positioning table, 14 - second positioning table, 15 - inclined plane, 16 - first positioning block, 17 - third positioning table, 18 - positioning table of the lower punch block, 19 - positioning hole, 20 - second positioning block, 21 - second positioning hole of the communication box housing, 22 - positioning groove of the communication box housing, 23 - first positioning hole of the communication box housing. Detailed implementation mode

[0021] The technical solution of the present utility model will be clearly and completely described below in the form of embodiments in conjunction with the accompanying drawings.

[0022] Please refer to Figures 1 to 6 , this embodiment provides a modular fine blanking die for a metal communication box housing 9, including a die base 5, a lower template 4, a modular lower punch plate 7, a modular upper punch block 6, an upper template 3 and a pressure template 1, and a lower punch block 12 for pushing the communication box housing 9. A guide pillar and bushing assembly 2 is arranged between the punching die base 5 and the pressure template 1 to ensure that the lower template 4 and the upper template 3 stacked layer by layer perform lifting and pressing actions with extremely high precision, so as to ensure the accuracy of punching the edge scraps of the communication box housing 9 and improve the finished product qualification rate.

[0023] Refer to Figure 2 and Figure 4 , in order to replace the modular lower punch plate 7 and the modular upper punch plate in real time according to the punching amount and wear degree, the modular lower punch plate 7 is arranged in the positioning groove on the upper end face of the lower template 4, and is precisely matched with the lower template 4 through positioning pins, and is tightly connected by means of connecting pieces. The modular lower punch plate 7 is provided with an upward convex inclined plane 15 opposite to each punching port. The inclined plane 15 performs full punching on the complete outer periphery of the rough blank to be punched and cut, and performs fine punching on the scraps at the edge of the rough blank to be punched and cut.

[0024] Refer to Figure 4, in order to achieve upper and lower double positioning for the communication box housing 9 to be punched, so as to improve the longitude and latitude accuracy of the communication box housing 9, a lower punch block 12 is fitted with clearance in each punching port. A positioning platform and positioning grooves that fit the concave and convex shape of the lower surface of the communication box housing 9 to be punched are provided on the upper end surface of the lower punch block 12, including a first positioning platform, a second positioning platform, and corresponding first and second positioning grooves. Correspondingly, a limiting groove 10 is provided on the lower end surface of the upper template 3. A modular upper punch block 6 is fitted in the limiting groove 10. The modular upper punch block 6 is provided with a modular upper punch block 6 facing all the lower punch blocks 12. The modular upper punch block 6 applies a pressing force to the upper surface of the communication box housing 9 to be punched, and is provided with a positioning platform and positioning grooves that fit the concave and convex shape of the upper surface of the communication box housing 9 to be punched.

[0025] Furthermore, in order to eject, lift and discharge the communication box housing 9 after punching, a number of ejector rods 11 are provided at the center of the lower punch block 12. The ejector rods 11 are provided with an ejection driving force by the hydraulic cylinder of the die set, which jacks up the lower punch block upward and lifts and discharges the finished communication box housing 9.

[0026] Furthermore, a plurality of positioning blocks for positioning the communication box housing 9 to be punched are provided on the upper end surface of the lower punch block 12, including a first positioning block and a second positioning block, to ensure more accurate positioning of the irregular communication box housing 9.

[0027] The working process is as follows:

[0028] After the pressure template 1 is lifted by the die set transmission mechanism, the communication box housing 9 is placed on a number of lower punch blocks 12. After positioning, the die is closed by the transmission mechanism, and the modular upper punch block 6 cooperates with the lower punch block 12 to push against each other up and down. After the communication box housing 9 is pressed together up and down, the modular upper punch block 6 is used to press down the communication box housing 9, and the surplus material at the edge is quickly and forcefully punched and cut off by the inclined plane, and is lifted upward by the ejector rod to complete the blanking. After multiple punches, when the inclined plane of the modular lower punch plate 7 is damaged, the new modular lower punch plate 7 can be replaced to keep the die in good condition.

[0029] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes, modifications, substitutions and variations can be made without departing from the purpose of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A modular fine punching die for a metal communication box shell (9), comprising a die base (5), a lower die plate (4), a modular lower punch plate (7), a modular upper punch block (6), an upper die plate (3) and a pressing die plate (1), and a lower punch block (12) for pushing the communication box shell (9), a guide column and guide sleeve assembly (2) is arranged between the punching die base (5) and the pressing die plate (1), and is characterized in that: The modular lower punch plate (7) is arranged in a positioning groove on the upper end surface of the lower template (4), and is precisely matched with the lower template (4) through a positioning pin, and is tightly connected with the help of a connecting piece. The modular lower punch plate (7) is provided with an upward convex chamfered surface (15) facing each punching opening, and the chamfered surface (15) is used to fully punch the complete outer periphery of the rough blank to be punched and to perform fine punching on the residual material at the edge of the rough blank to be punched. A lower punch block (12) is provided in the clearance of each punching opening, and the upper end face of the lower punch block (12) is provided with a positioning platform and a positioning groove that fit with the concave and convex shape of the lower surface of the communication box shell (9) to be punched. Correspondingly, a limiting groove (10) is provided on the lower end face of the upper template (3), and a modular upper punch block (6) fits in the limiting groove (10). The modular upper punch block (6) is provided with a modular upper punch block (6) facing all the lower punch blocks (12). The modular upper punch block (6) is pressed against the upper surface of the communication box shell (9) to be punched, and is provided with a positioning platform and a positioning groove that fit with the concave and convex shape of the upper surface of the communication box shell (9) to be punched.

2. The modular fine stamping die for the metal communication box housing (9) according to claim 1, characterized in that: A plurality of push rods (11) are arranged at the center of the lower punch block (12), and the push rods (11) are provided with a push force by a hydraulic cylinder of the mold frame.

3. The modular fine stamping die for the metal communication box housing (9) according to claim 1, characterized in that: The upper end surface of the lower punch block (12) is provided with a plurality of positioning blocks for positioning the communication box shell (9) to be punched.

4. The modular fine stamping die for the metal communication box housing (9) according to claim 1, characterized in that: The modular lower punch plate (7) and the modular upper punch plate can be replaced with new plates in real time according to the punching amount and the degree of wear.

Images