High-precision joint stamping die

Abstract

The utility model relates to the field of stamping metal forming, and discloses a high-precision connector stamping die which comprises two pulling plates and a lower connecting hard plate, the interiors of the two pulling plates are fixedly connected with hanging bolts, the close sides of the two hanging bolts are fixedly connected with an upper connecting soft plate, and the upper connecting soft plate is fixedly connected with a lower connecting soft plate. The bottom of the upper connecting soft plate is fixedly connected with an upper connecting hard plate, the bottom of the upper connecting hard plate is fixedly connected with an upper die, the bottom of the upper die is fixedly connected with a punching head, the interiors of the two pulling plates are slidably connected with an ejection plate, and the top of the ejection plate is fixedly connected with an ejection block. And the top of the lower connecting hard plate is fixedly connected with a lower connecting soft plate. According to the utility model, the pull plate is driven to move upwards through the return stroke of the stamping mechanism, so that the ejector plate in contact with the pull plate is driven to move upwards and slide in the lower cushion block, the joint can be conveniently taken out from the upper die, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of stamping metal forming, in particular to a high-precision joint stamping die. Background Art

[0002] Demand for automotive pipe fittings is high, reaching tens of thousands per year. Numerous similar products exist on the market, and the traditional production method involves machining using Swiss-type lathes. However, compared to stamping, Swiss-type lathes suffer from lower production efficiency and material utilization. Furthermore, the high cost of imported materials further drives the need for cost reduction.

[0003] In the prior art, during the stamping process, the traditional stamping die needs to lock the core rod to hold the blank tightly to prevent the lower part of the joint from deforming. However, in the prior art, this method usually leads to increased friction during removal, making the joint difficult to remove. To solve this problem, there are usually two options: one is that some punching machines have their own ejection mechanism, which is used to eject the joint; the other is that the mold adopts a left-right clamping method, and the mold is opened after stamping to remove the joint. The first option has special requirements for the punching machine and cannot meet actual production needs; and the second option may cause burrs to be squeezed out of the lower part of the joint along the clamping gap during stamping, thereby increasing subsequent processing costs. For this reason, a high-precision joint stamping die is proposed to solve the above problems. Utility Model Content

[0004] In order to make up for the above deficiencies, the utility model provides a high-precision joint stamping die, which aims to improve the problem in the prior art that the stamped joint is difficult to remove.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The top of the lifting block is connected with the up-down knob of the lifting block, and the bottom of the lifting block is connected with the up-down knob of the lifting block, and the top of the lifting block is connected with the down-down knob of the lifting block.

[0007] As a further description of the above technical solution:

[0008] The outer portion of the ejection block is slidably connected to the inner portion of the lower pad block, and the outer portion of the ejection block is slidably connected to the inner portion of the lower connection soft board.

[0009] The utility model has the following beneficial effects:

[0010] 1. In the utility model, the downward movement of the top punching structure drives the pull plate to slide outside the ejection plate, and the pull plate and the ejection plate at the lower end are in a relaxed state. After the punching is completed, the return stroke of the punch press drives the punching structure and the ejection plate to move upward, and then drives the ejection block to slide upward, ejecting the joint, so that the joint can be taken out more conveniently.

[0011] 2. In the present invention, by changing the locking core rod into a sleeve form, the flow of the lower end material can be effectively prevented, the burrs generated during the stamping process are reduced, and the surface quality of the finished product is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a three-dimensional diagram of a high-precision joint stamping die proposed in the utility model;

[0013] Figure 2 This is a structural disassembly diagram of a high-precision joint stamping die proposed in the utility model;

[0014] Figure 3 This is a schematic diagram of the locking mandrel structure of a high-precision joint stamping die proposed by the utility model;

[0015] Figure 4 This is a schematic diagram of the lower pad structure of a high-precision joint stamping die proposed by the utility model.

[0016] Legend:

[0017] 1. Upper connecting soft plate; 2. Upper connecting hard plate; 3. Upper die; 4. Hanging bolt; 5. Pull plate; 6. Punch head; 7. Sleeve; 8. Locking core rod; 9. Lower die limit block; 10. Upper pad; 11. Lower pad; 12. Lower connecting soft plate; 13. Ejector block; 14. Lower connecting hard plate; 15. Ejector plate. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] A high-precision joint stamping die includes two pull plates 5 and a lower connecting hard plate 14. The two pull plates 5 can provide additional support and pulling force, strengthen the die structure, and convert the return force of the punch press into the force for ejecting the joint. The interior of the two pull plates 5 is fixedly connected with a hanging bolt 4, which connects the pull plates 5 and converts the upward pulling force during the return stroke of the punch press into the force for ejecting the joint through the pull plates 5. The adjacent side of the two hanging bolts 4 is fixedly connected with an upper connecting soft plate 1, which is used to connect the punch press and provide basic support. The bottom of the upper connecting soft plate 1 is fixedly connected with an upper connecting hard plate 2, which is made of hard material and receives the pressure of the punch head 6 to prevent the connecting plate from deforming. The bottom of the upper connecting hard plate 2 is fixedly connected with an upper mold 3, which is used to lock the punch head 6, position and form the specific shape of the joint, and is designed with an avoidance mechanism. The bottom of the upper die 3 is fixedly connected with a punch head 6, which is used to perform the punching operation and directly apply pressure to the material. The two pull plates 5 are internally slidably connected with an ejector plate 15. Driven by the pull plates 5, the ejector plate 15 is connected to the subsequent ejection structure to slide, thereby achieving the ejection effect and reducing the difficulty of removal. The top of the ejector plate 15 is fixedly connected with an ejector block 13. The ejector block 13 is generally made of steel, which can not only provide stable stamping support but also push the joint out. The top of the lower connecting hard plate 14 is fixedly connected with a lower connecting soft plate 12. The lower connecting hard plate 14 is used to connect the lower connecting soft plate 12 to withstand part of the pressure during the stamping process. Force, the top of the lower connecting soft board 12 is fixedly connected with a lower pad 11, which provides support to ensure the stability of the mold, and the top of the lower pad 11 is fixedly connected with an upper pad 10 to provide additional support and reduce deformation during stamping. The top of the upper pad 10 is fixedly connected with a lower die limit block 9 to limit the movement of the subsequent limit structure to ensure stamping accuracy. The interior of the lower die limit block 9 is fixedly connected with a sleeve 7, and a locking core rod 8 is provided inside the sleeve 7. The sleeve 7 is used to guide and position the locking core rod 8. The positioning locking core rod 8 is used to lock the blank during the stamping process to prevent deformation, and is changed to a sleeve form to avoid burrs.

[0020] Reference Figure 1 and Figure 4 The outside of the ejector block 13 is slidably connected to the inside of the lower pad 11, and the outside of the ejector block 13 is slidably connected to the inside of the lower connecting soft plate 12. The return of the punch press drives the ejector plate 15 to slide upward, thereby driving the ejector block 13 to slide upward inside the lower pad 11 and the lower connecting soft plate 12, ejecting the upper joint, reducing the requirements for the punch press stroke and improving work efficiency.

[0021] Working principle: First, install the lower connecting hard plate 14 and the top fixing component on a fixed plane, and then place the ejector plate 15 on another fixed plane, and place the blank into the inside of the locking core rod 8. The bottom of the blank contacts the top of the ejector block 13. By turning on the punch press, the punch head 6 moves downward, and the punch head 6 directly presses the upper end of the blank into the required shape. At the same time, the top punching structure moves downward, driving the pull plate 5 to slide on the outside of the ejector plate 15. The pull plate 5 and the ejector plate 15 at the lower end are in a relaxed state. After the stamping is completed, the punching structure and the ejector plate 15 are driven upward by the return stroke of the punch press, and then the ejector block 13 is driven to slide upward to eject the joint, so that the joint can be taken out more conveniently, reducing the requirements for the punch stroke, simplifying the operation process, and improving work efficiency.

[0022] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-precision joint stamping die, comprising two pull plates (5) and a lower connecting hard plate (14), characterized in that: The interiors of the two pulling plates (5) are fixedly connected with hanging bolts (4), the adjacent sides of the two hanging bolts (4) are fixedly connected with an upper connecting soft plate (1), the bottom of the upper connecting soft plate (1) is fixedly connected with an upper connecting hard plate (2), the bottom of the upper connecting hard plate (2) is fixedly connected with an upper die (3), the bottom of the upper die (3) is fixedly connected with a punching head (6), the interiors of the two pulling plates (5) are slidably connected with an ejection plate (15), the top of the ejection plate (15) is fixedly connected with the top of the ejection plate (15). The top of the lower connecting hard plate (14) is fixedly connected to the lower connecting soft plate (12), the top of the lower connecting soft plate (12) is fixedly connected to the lower pad (11), the top of the lower pad (11) is fixedly connected to the upper pad (10), the top of the upper pad (10) is fixedly connected to the lower mold limit block (9), the interior of the lower mold limit block (9) is fixedly connected to the sleeve (7), and the interior of the sleeve (7) is provided with a locking core rod (8).

2. A high-precision joint stamping die according to claim 1, characterized in that: The outside of the ejection block (13) is slidably connected to the inside of the lower pad (11), and the outside of the ejection block (13) is slidably connected to the inside of the lower connection soft board (12).

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