Deep taper hole product forming die

Abstract

The utility model relates to the technical field of punching dies, and discloses a deep taper hole product forming die which comprises an upper die base and a lower die base, an upper die plate is installed at the bottom end of the upper die base through an upper pressing plate, a lower die plate matched with the upper die plate in an adaptive mode is installed at the top end of the lower die base, and a blank body is arranged on the top face of the lower die plate. An electric telescopic rod is installed at the position, close to one side, of the top end of the lower die base, a liquid spraying pipe is installed at the tail end of a push rod of the electric telescopic rod, a connecting pipe is connected to the middle of the side, away from the lower die plate, of the liquid spraying pipe, and the end, away from the liquid spraying pipe, of the connecting pipe is connected with an air conveying pipe and an infusion pipe. Lubricating oil can be sequentially sprayed on the surfaces of the lower mold plate and the blank body through the connecting pipe, the liquid spraying pipe, the lower mold base and the blank body, so that friction between the blank body and the upper mold plate is reduced, the blank body is easier to deform in a cavity, and the probability that other defects such as scratches are generated on the surface of a blank is reduced.

Description

Technical Field

[0001] This utility model relates to the field of punching die technology, specifically a deep tapered hole product forming die. Background Technology

[0002] A mold is a tool used to make shaped items. Different molds are composed of different parts. A deep conical hole punching mold is a type of stamping mold. Its working steps are to place the material in the upper and lower molds, and then use a press to stamp the material to form a conical hole on the surface of the material.

[0003] When using existing deep conical hole forming dies, the upper die is usually pressed down directly after the blank is placed in to punch the hole. There is no step to lubricate the blank. Because there is a lot of relative movement and friction between the upper die and the blank, the friction between the upper die and the blank is large when extruding to form a deep conical hole. After long-term use, the wear is large, and it is difficult to clean the dust or debris at the die in real time. A lot of dust may affect the forming effect. Utility Model Content

[0004] The purpose of this invention is to provide a deep conical hole product forming mold, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A deep conical hole forming mold includes an upper mold base and a lower mold base. An upper template is installed at the bottom end of the upper mold base via an upper pressure plate. A lower template that is compatible with the upper template is installed at the top end of the lower mold base, and a blank body is provided on the top surface of the lower template.

[0007] An electric telescopic rod is installed on one side of the top of the lower mold base. A spray pipe is installed at the end of the push rod of the electric telescopic rod. A connecting pipe is connected to the center of the side of the spray pipe away from the lower mold base. An air supply pipe and a liquid supply pipe are connected to the end of the connecting pipe away from the spray pipe. A quick-cut solenoid valve is provided at the connection between the connecting pipe and the air supply pipe and the air supply pipe.

[0008] Preferably, the spray pipe has several nozzles arranged at equal intervals on the side near the lower mold plate, and a limit guide post is provided at the top corner of the lower mold base, with an adjustment gap between the spray pipe and the limit guide post.

[0009] Preferably, when the electric telescopic rod pusher extends to its limit distance, the bottom end of the spray pipe exceeds the top surface of the lower template, and when the electric telescopic rod pusher retracts to its limit distance, the top surface of the spray pipe is lower than the top surface of the lower template.

[0010] Preferably, the upper pressure plate, the upper template, the lower mold base, and the lower template are all provided with oil injection holes on one side, the top of the lower template is provided with a groove that is compatible with the blank body, and the top surface of the lower template is provided with air holes near the groove.

[0011] Preferably, the bottom end of the upper template is provided with a stamping block that is compatible with the groove of the lower template, the center points of the blank body, the upper template, and the lower template are on the same straight line, and the surfaces of the upper template and the lower template are both sprayed with a boron nitride lubricating coating.

[0012] Preferably, a one-way valve is provided at the connection between the connecting pipe and the spray pipe, the connecting pipe is a hollow rigid pipe, and the top surface of the connecting pipe and the spray pipe does not contact the bottom surface of the upper template.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention, by setting up a connecting pipe, a spray pipe, a lower mold base, and a blank body to cooperate with each other, allows lubricating oil to be sprayed sequentially onto the surfaces of the lower mold plate and the blank body through the liquid delivery pipe, spray pipe, and connecting pipe during stamping. This reduces friction between the blank body and the upper mold plate, thereby reducing wear on the upper mold plate and the blank body during molding, improving service life, and enhancing product surface quality.

[0015] The lubricating oil filling holes and air holes on the upper mold plate and the lower mold base are used to add lubricating oil. At the same time, the air supply pipe continuously blows air down to the surface of the lower mold plate, which makes it easier to blow out any dust that may remain in the gaps of the lower mold plate. This makes it easier for the blank body to deform in the cavity, reduces the probability of scratches and other defects on the blank surface, and avoids the impact of too many impurities on the molding effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a deep conical hole product forming mold according to an embodiment of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the lower mold base, lower template, and spray pipe in an embodiment of this utility model;

[0018] Figure 3 This is a schematic diagram of the upper template and upper pressure plate in an embodiment of this utility model;

[0019] Figure 4 This is a top view of the spray pipe and lower template in an embodiment of this utility model.

[0020] In the diagram: 1. Upper mold base; 2. Upper pressure plate; 3. Upper template; 4. Limiting guide post; 5. Blank body; 6. Lower mold base; 7. Lower template; 8. Electric telescopic rod; 9. Spray pipe; 10. Connecting pipe; 11. Quick-cut solenoid valve; 12. Liquid delivery pipe; 13. Gas delivery pipe. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] Combination Figures 1-4 A deep conical hole forming mold includes an upper mold base 1 and a lower mold base 6. An upper template 3 is installed at the bottom end of the upper mold base 1 through an upper pressure plate 2. A lower template 7 that is compatible with the upper template 3 is installed at the top end of the lower mold base 6, and a blank body 5 is provided on the top surface of the lower template 7.

[0024] See Figure 2 and Figure 4 Furthermore, an electric telescopic rod 8 is installed on one side of the top of the lower mold base 6. A spray pipe 9 is installed at the end of the push rod of the electric telescopic rod 8. A connecting pipe 10 is connected to the spray pipe 9 at a central position on the side furthest from the lower mold plate 7. An air supply pipe 13 and a liquid supply pipe 12 are connected to the end of the connecting pipe 10 furthest from the spray pipe 9, respectively. A quick-cut solenoid valve 11 is installed at the connection between the connecting pipe 10 and the air supply pipe 13. Several equally spaced nozzles are arranged on the side of the spray pipe 9 closest to the lower mold plate 7. A limit guide post 4 is provided at the top corner of the seat 6, and an adjustment gap is left between the spray pipe 9 and the limit guide post 4. When the electric telescopic rod 8 pushes out to the limit distance, the bottom end of the spray pipe 9 exceeds the top surface of the lower template 7. When the electric telescopic rod 8 pushes back to the limit distance, the top surface of the spray pipe 9 is lower than the top surface of the lower template 7. A one-way valve is provided at the connection between the connecting pipe 10 and the spray pipe 9. The connecting pipe 10 is a hollow rigid pipe, and the top surfaces of the connecting pipe 10 and the spray pipe 9 do not contact the bottom surface of the upper template 3.

[0025] Specifically, according to existing technology, the upper mold base 1 and the lower mold base 6 can be connected by stamping pads and stamping cover plates respectively to fix the lower mold base 6 and the upper mold base 1. At the same time, the upper mold base 1 can be driven to move up and down for stamping by the driving component set on the stamping cover plate. Before stamping, the liquid delivery pipe 12 can be pre-connected to the oil removal pipe of the external lubricating oil delivery pump. So when the blank body 5 is placed, the quick-cut solenoid valve 11 corresponding to the liquid delivery pipe 12 can be opened. At this time, the liquid delivery pipe 12, the connecting pipe 10, and the spray pipe 9 form a passage to spray the lubricant onto the surface of the lower mold plate 7. After spraying, the quick-cut solenoid valve 11 is closed. After the blank body 5 is placed on the lower mold plate 7, the quick-cut solenoid valve 11 is opened again to spray lubricant onto the surface of the blank body 5. Subsequently, the quick-cut solenoid valve 11 can be closed and the push rod of the electric telescopic rod 8 can be retracted to prevent it from affecting the upper mold base 1 and the upper mold plate 3. When the upper mold plate 3 first contacts the blank body 5, the double-layer lubricating oil sprayed can reduce the friction between the blank body 5 and the upper mold plate 3, thereby reducing the wear on the upper mold plate 3 and the blank body 5 during molding, which is beneficial to improving the surface quality of the product, and at the same time reducing the probability that the blank body 5 will get stuck at the upper mold plate 3 during demolding.

[0026] Example 2

[0027] See Figure 2 and Figure 3 Furthermore, based on Embodiment 1, it is further found that oil injection holes are provided on one side of the upper pressure plate 2, upper template 3, lower mold base 6, and lower template 7. The top of the lower template 7 is provided with a groove that is compatible with the blank body 5, and air holes are provided on the top surface of the lower template 7 near the groove. The bottom of the upper template 3 is provided with a stamping block that is compatible with the groove of the lower template 7. The center points of the blank body 5, upper template 3, and lower template 7 are on the same straight line, and the surfaces of the upper template 3 and lower template 7 are sprayed with a boron nitride lubricating coating.

[0028] Specifically, by connecting the external oil supply pipe to the oil injection holes on the upper template 3, upper pressure plate 2, lower template 7, and lower mold base 6, lubricating oil can be added to the upper pressure plate 2, upper template 3, lower mold base 6, and lower template 7 periodically. During use, the air supply pipe 13 and the air holes on the lower template 7 can be connected to the external air supply pipe. Subsequently, by air jetting through the air holes on the top surface of the lower template 7 in conjunction with the air supply pipe 13 supplying air to the spray pipe 9, the top surface of the lower template 7 can be cleaned to blow off residual impurities. Through the above-mentioned cleaning and lubricating oil spraying methods, the friction between the cavity surface of the upper template 3 and the blank body 5 can be effectively reduced, making the blank body 5 easier to deform in the cavity, reducing the probability of scratches and other defects on the blank surface, thereby improving the surface quality of the product.

[0029] In actual operation, the upper mold base 1 and the lower mold base 6 can be connected by stamping pad and stamping cover plate respectively according to the existing technology, so as to fix the lower mold base 6 and the upper mold base 1. At the same time, the upper mold base 1 can be driven to lift and press by the driving component set on the stamping cover plate. Before stamping, the infusion pipe 12 can be connected to the oil removal pipe of the external lubricating oil delivery pump in advance.

[0030] Therefore, when placing the blank body 5, the quick-cut solenoid valve 11 corresponding to the infusion pipe 12 can be opened. At this time, the infusion pipe 12, the connecting pipe 10, and the spray pipe 9 form a passage so that the lubricant can be sprayed onto the surface of the lower template 7. After spraying, the quick-cut solenoid valve 11 is closed until the blank body 5 is placed on the lower template 7. Then, the quick-cut solenoid valve 11 is opened again to spray the lubricant onto the surface of the blank body 5. Subsequently, the quick-cut solenoid valve 11 can be closed, and the push rod of the electric telescopic rod 8 can be retracted to prevent it from affecting the upper mold base 1 and the upper template 3 from pressing down.

[0031] When the upper template 3 first contacts the blank body 5, the double-layer lubricating oil sprayed can reduce the friction between the blank body 5 and the upper template 3, thereby reducing the wear on the upper template 3 and the blank body 5 during molding, which is beneficial to improving the surface quality of the product, and at the same time reducing the probability that the blank body 5 will get stuck at the upper template 3 during demolding.

[0032] By connecting the external oil supply pipe to the oil injection holes on the upper template 3, upper pressure plate 2, lower template 7, and lower mold base 6, lubricating oil can be added to the upper pressure plate 2, upper template 3, lower mold base 6, and lower template 7 periodically. During use, the air supply pipe 13 and the air holes on the lower template 7 can be connected to the external air supply pipe, and the corresponding quick-cut solenoid valve 11 can be opened to deliver the cleaning airflow. Subsequently, air can be sprayed through the air holes set on the top surface of the lower template 7, and air can be delivered to the spray pipe 9 through the air supply pipe 13. The airflow can be sprayed out from the spray pipe 9 to clean the top surface of the lower template 7 so as to blow off the residual impurities.

[0033] By cleaning and spraying lubricating oil as described above, the friction between the cavity surface of the upper template 3 and the blank body 5 can be effectively reduced, making it easier for the blank body 5 to deform in the cavity, reducing the probability of scratches and other defects on the blank surface, thereby improving the surface quality of the product.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A forming mold for deep conical holes, characterized in that: It includes an upper mold base (1) and a lower mold base (6). The bottom end of the upper mold base (1) is equipped with an upper template (3) through an upper pressure plate (2). The top end of the lower mold base (6) is equipped with a lower template (7) that is compatible with the upper template (3). The top surface of the lower template (7) is provided with a blank body (5). An electric telescopic rod (8) is installed on one side of the top of the lower mold base (6). A spray pipe (9) is installed at the end of the push rod of the electric telescopic rod (8). A connecting pipe (10) is connected to the side of the spray pipe (9) away from the lower mold plate (7). An air supply pipe (13) and a liquid supply pipe (12) are connected to the end of the connecting pipe (10) away from the spray pipe (9). A quick-cut solenoid valve (11) is provided at the connection between the connecting pipe (10) and the air supply pipe (13).

2. The deep conical hole product forming mold according to claim 1, characterized in that: The spray pipe (9) has several nozzles arranged at equal intervals on the side near the lower template (7). The top of the lower mold base (6) is provided with a limit guide post (4) near the corner, and there is an adjustment gap between the spray pipe (9) and the limit guide post (4).

3. The deep conical hole forming mold according to claim 1, characterized in that: When the push rod of the electric telescopic rod (8) extends to the limit distance, the bottom end of the spray pipe (9) exceeds the top surface of the lower template (7). When the push rod of the electric telescopic rod (8) retracts to the limit distance, the top surface of the spray pipe (9) is lower than the top surface of the lower template (7).

4. The deep conical hole forming mold according to claim 1, characterized in that: Oil injection holes are provided on one side of the upper pressure plate (2), upper template (3), lower mold base (6), and lower template (7). The top of the lower template (7) is provided with a groove that is compatible with the blank body (5), and air holes are provided on the top surface of the lower template (7) near the groove.

5. The deep conical hole product forming mold according to claim 4, characterized in that: The bottom end of the upper template (3) is provided with a stamping block that is compatible with the groove of the lower template (7). The center points of the blank body (5), the upper template (3), and the lower template (7) are on the same straight line, and the surfaces of the upper template (3) and the lower template (7) are coated with boron nitride lubricating coating.

6. The deep conical hole forming mold according to claim 3, characterized in that: A one-way valve is provided at the connection between the connecting pipe (10) and the spray pipe (9). The connecting pipe (10) is a hollow rigid pipe, and the top surfaces of the connecting pipe (10) and the spray pipe (9) do not contact the bottom surface of the upper template (3).

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