Forming blanking composite die without forming female die

Abstract

The utility model discloses a forming blanking composite die without a forming female die. The forming blanking composite die comprises an upper die and a lower die, the upper die comprises an upper die base and a male die. The male die is fixed to the upper die base through a fixing plate, a discharging plate is further connected to the upper die base in a sliding mode through a discharging screw, and a spring is further arranged between the discharging plate and the upper die base. A guide sleeve is further arranged on the upper die base. The lower die comprises a blanking female die and a lower die base, the upper surface of the blanking female die is matched with the discharging plate, and a female die cutting edge of the blanking female die is matched with the male die. A guide pillar seat and a guide pillar are arranged on the lower die holder, and the guide pillar is in guide fit with the guide sleeve; and a material receiving box is arranged below the material leakage hole of the blanking female die. According to the structure, a process supplement molded surface required by an original forming blanking progressive die structure is removed, so that the material utilization rate is improved. According to the structure, forming and blanking are combined in one die cavity, so that manual operation is more convenient, the production takt is shortened, and the production efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive stamping die technology, and in particular to a forming and blanking composite die structure without a forming die. Background Technology

[0002] The shift fork pad is a sealing component in the shift fork assembly, typically produced using a progressive die with two stages: forming and blanking. Due to production limitations during development, this progressive die was manually operated: the operator held the strip of material and fed it into the first stage of the die for forming, then fed it one step further for blanking, thus completing the stamping operation of the shift fork pad.

[0003] When the mold was manufactured and tested, the following problems were found: First, the material utilization rate of the parts was low; second, manual feeding for continuous die operation was inconvenient and the production efficiency was low; third, blanking on the spherical surface resulted in large punching burrs, exceeding the requirements of the stamping specifications.

[0004] The above problems result in high manufacturing costs and poor quality for the shift fork pads, which urgently need improvement. Utility Model Content

[0005] The purpose of this utility model is to provide a forming and blanking composite mold without a forming die to solve the problems of material utilization, production efficiency and blanking quality of shift fork pads, while ensuring the manufacturability of the mold structure and the stability of the shift fork pad quality.

[0006] The technical solution adopted by this utility model is: a forming and blanking composite mold without forming die, characterized in that: it includes an upper mold and a lower mold; the upper mold includes an upper mold base 1 and a punch 4; the punch 4 is fixed on the upper mold base 1 by a fixing plate 3, and a stripper plate 7 is slidably connected to the upper mold base 1 by a stripper screw 5, and a spring 6 is provided between the stripper plate 7 and the upper mold base 1; a guide sleeve 8 is also provided on the upper mold base 1; the lower mold includes a blanking die 10 and a lower mold base 13, the upper surface of the blanking die 10 cooperates with the stripper plate 7, and the die cutting edge of the blanking die 10 cooperates with the punch 4; a guide post base 16 and a guide post 17 are provided on the lower mold base 13, and the guide post 17 is guided and cooperates with the guide sleeve 8; a receiving box 14 is provided below the material discharge hole of the blanking die 10.

[0007] Furthermore: the punch 4 is cylindrical, with a fixed shoulder at the top that cooperates with the fixed plate 3, and a forming surface at the bottom, with an annular plane on the outside of the forming surface.

[0008] Furthermore, a pad 15 is provided below the lower mold base 13.

[0009] Furthermore: the pad 15 is fixed to the lower mold base 13 with screws; the receiving box 14 is slidably disposed in the groove of the pad 15.

[0010] Furthermore: Lifting screws I9 are provided on both sides of the upper mold base 1; lifting screws II18 are provided on both sides of the lower mold base 13.

[0011] The beneficial effects of this utility model are:

[0012] This utility model eliminates the need for additional process surfaces required by the original continuous forming die structure from a process perspective, thereby improving material utilization.

[0013] This utility model combines forming and blanking into a single mold cavity, making manual operation more convenient, shortening the production cycle, and significantly improving production efficiency.

[0014] In this invention, the annular planar structure design at the punch cutting edge improves the punching performance of the punch cutting edge, ensuring that the punching burr height meets the requirements of the stamping specifications. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings:

[0016] Figure 1 This is a structural diagram of the forming and blanking composite mold without forming die of this utility model;

[0017] Figure 2 yes Figure 1 Diagram of the middle punch structure;

[0018] Figure 3 yes Figure 1 Schematic diagram of the center shift fork pad.

[0019] The numbers in the diagram are explained as follows: 1-Upper mold base, 2-Punch pad, 3-Punch fixing plate, 4-Punch, 5-Ejector screw, 6-Spring, 7-Ejector plate, 8-Guide sleeve, 9-Lifting screw I, 10-Blanking die, 11-Shift fork pad, 12-Positioning pin, 13-Lower mold base, 14-Receiving box, 15-Shim, 16-Guide post base, 17-Guide post, 18-Lifting screw II. Detailed Implementation

[0020] according to Figures 1-3 This invention provides a detailed description of its specific structure and related information.

[0021] This utility model discloses a forming and blanking composite mold without forming die for preparing shift fork pad 11, which includes an upper mold and a lower mold;

[0022] The upper mold includes an upper mold base 1 and a punch 4; the punch 4 is fixed on the upper mold base 1 by a fixing plate 3, and a stripper plate 7 is slidably connected to the upper mold base 1 by a stripper screw 5. A spring 6 is also provided between the stripper plate 7 and the upper mold base 1; a guide sleeve 8 is also provided on the upper mold base 1; the stripper screw 5 is slidably connected in the groove of the upper mold base 1 and threadedly connected to the stripper plate 7 below, thereby driving the stripper plate 7 to move or lift and lower with the upper mold base 1.

[0023] The lower die includes a blanking die 10 and a lower die base 13. The upper surface of the blanking die 10 is fitted with the stripper plate 7, and the die cutting edge of the blanking die 10 is fitted with the punch 4. A guide post base 16 and a guide post 17 are provided on the lower die base 13. The guide post 17 is fitted with the guide sleeve 8.

[0024] A receiving box 14 is provided below the material discharge hole of the blanking die 10.

[0025] Preferably, the punch 4 is cylindrical, with a fixed shoulder at the top that cooperates with the fixed plate 3, and a forming surface at the bottom, with an annular plane on the outside of the forming surface.

[0026] Preferably, a pad 15 is provided below the lower mold base 13.

[0027] Preferably, the pad 15 and the lower mold base 13 are fixed with screws; the receiving box 14 is slidably disposed in the groove of the pad 15.

[0028] Preferably, lifting screws I9 are provided on both sides of the upper mold base 1; lifting screws II18 are provided on both sides of the lower mold base 13 for lifting the mold.

[0029] Preferably, a positioning pin 12 is provided on the blanking die 10, and a groove that avoids it is provided on the stripper plate 7; the positioning pin is used to position the sheet metal.

[0030] The following examples further illustrate this solution.

[0031] Example: See attached document Figure 1-3 (in Figure 1To better illustrate this design, the drawing is designed with a basic left-right symmetrical structure. This design provides a forming and blanking composite mold without a forming die, including an upper mold and a lower mold. The upper mold mainly consists of: an upper mold base 1, a punch pad 2, a punch fixing plate 3, a punch 4, a stripper screw 5, a spring 6, a stripper plate 7, a guide sleeve 8, and a lifting screw 19. The upper mold base 1, punch pad 2, and punch fixing plate 3 are connected by screws and pins; the punch 4 and punch fixing plate 3 have a transition fit; the stripper plate 7 is connected to the upper mold base 1 by the spring 6 and the stripper screw 5. The stripper plate is connected to the upper mold base by the spring and the stripper screw, and is guided by the punch; guide sleeves are set on both sides of the upper mold base, fixed by screws and pins, and have a small clearance sliding fit with the guide post on the lower mold base, providing good guidance between the upper and lower molds.

[0032] The punch consists of a fixed shoulder 41, a fixed part 45, and a working part. The fixed shoulder is used to suspend the punch from the fixed plate and prevent it from falling off. The fixed part is press-fitted into the fixed plate. The working part includes a punch cutting edge 42 and a forming surface 44. A special design is used at the punch cutting edge to add an annular plane 43, which changes the original obtuse angle to a right angle, making it sharper. Although the forming surface is affected by the annular plane, it does not affect the forming function or forming conformity of the forming surface.

[0033] The lower mold mainly consists of: a blanking die 10, a locating pin 12, a lower mold base 13, a receiving box 14, a shim 15, a guide post base 16, a guide post 17, and a lifting screw II 18. The blanking die 10 is connected to the lower mold base 13 by screws and pins; there are two locating pins 12 on the left side, in the front and back directions, which are interference fits with the blanking die 10; the shim 15 is fixed to the lower mold base 13 by screws; the receiving box 14 is placed in the groove of the shim 15 and can be pulled out. The blanking die has a through hole in the middle, and the upper edge of the through hole serves as the die cutting edge, which cooperates with the punch cutting edge to shear the sheet metal. The sheared material passes through the through hole and falls into the receiving box 14 under the pushing of the subsequent finished product. The through hole serves as a material discharge hole. This composite mold does not have a forming die. Instead, the forming function of the forming die is replaced by the combined action of the stripper plate, the punch, and the blanking die.

[0034] The guide sleeve 8 in the upper mold base and the guide post 17 in the lower mold base are in a small clearance sliding fit, which provides good guiding accuracy when the upper and lower molds are closed.

[0035] During the stamping operation, the strip is fed longitudinally into the mold, and is positioned in the left and right directions by the two positioning pins 12 on the left side, and visually positioned in the front and back directions. When the machine tool is started, the upper mold base 1 drives the upper mold to move downward. The upper mold guide sleeve 8 first contacts and guides the lower mold guide post 17. Then the strip plate 7 first contacts the strip surface on the blanking die 10 and stops moving downward. At this time, the spring 6 is compressed, and the strip plate 7 continuously applies pressure to the strip, which plays a fixing role. The upper mold continues to move downward along the guide post 17, and the forming surface of the punch 4 contacts the strip surface. As the punch 4 continues to descend, under the pressure of the stripper plate, the punch 4 stretches and shapes the sheet metal. As the punch 4 continues to descend, when the punch cutting edge 12 contacts the upper surface of the sheet metal, the forming of the fork pad 11 is completed. As the punch 4 continues to descend, the punch cutting edge completely penetrates the strip metal, causing the fork pad 11 to separate from the strip metal and be pushed into the cutting edge of the blanking die 10 (the blanking die has a hole in the middle as a material leakage hole, and the upper edge serves as the cutting edge), and finally falls into the receiving box 14 below the die.

[0036] This process is repeated to complete the stamping production of the shift fork pad.

Claims

1. A form draw compound die without a form punch, characterized by: The upper die and the lower die; The upper die comprises an upper die base (1), a male die (4); the male die (4) is fixed on the upper die base (1) through a fixing plate (3), a stripper plate (7) is slidably connected to the upper die base (1) through a stripper screw (5), and a spring (6) is arranged between the stripper plate (7) and the upper die base (1); a guide sleeve (8) is further arranged on the upper die base (1); The lower die comprises a blanking female die (10) and a lower die base (13), the upper surface of the blanking female die (10) is matched with the stripper plate (7), and the blade edge of the blanking female die (10) is matched with the male die (4); a guide pillar base (16) and a guide pillar (17) are arranged on the lower die base (13), and the guide pillar (17) is guided and matched with the guide sleeve (8); A receiving box (14) is arranged below the material leakage hole of the blanking female die (10).

2. The forming blanking combined die without a forming female die according to claim 1, characterized in that: The male die (4) is in a cylindrical shape, an upper part of the male die (4) is provided with a fixing shoulder matched with the fixing plate (3), and a lower part of the male die (4) is provided with a forming surface, and an outer part of the forming surface is provided with an annular flat surface.

3. A form draw composite die without a form punch according to claim 1, characterized in that: A pad iron (15) is arranged below the lower die base (13).

4. A form draw composite die according to claim 1 wherein: The pad iron (15) is fixed to the lower die base (13) by means of screws; and the receiving box (14) is slidably arranged in a groove of the pad iron (15).

5. A form draw composite die according to claim 1 wherein: Lifting screws I (9) are arranged on both sides of the upper die base (1); and lifting screws II (18) are arranged on both sides of the lower die base (13).

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