Hole forming tool for profiling

Abstract

The utility model provides a hole forming tool for profiling, which comprises a fixing part arranged at the bottom of a profiling mold, a hole forming part arranged in the profiling mold, and one end of the hole forming part inserted with the fixing part; a first cavity is formed in the hole forming part, and a first opening is formed in the other end of the hole forming part; the hole forming part is used for forming a hole in the middle of the formed blank; before the blank is formed, the supporting assembly is arranged in the first cavity so as to support the hole forming part; then the blank is put into a profiling mold, and forming is conducted under the action of high pressure; then the forming blank and the hole forming part are taken out of the profiling mold, redundant blank on the top of the forming blank is cut off to expose the first opening, at the moment, the supporting assembly is taken out of the first cavity from the first opening, and under the condition, the hole forming part is properly deformed inwards under the action of external force; the hole forming part can be conveniently taken out of the forming blank, and the forming blank cannot be damaged.

Description

Technical Field

[0001] The present application generally relates to the field of blank forming technology, and specifically relates to a hole forming tool for pressing. Background Art

[0002] At present, the powder metallurgy industry has a demand to open a hole in the center of the blank when pressing large-sized blanks. In the existing technology, a metal rod is usually used to penetrate the center of the blank to make a hole during the forming process. However, ordinary metal rods will deform and bend under high pressure, resulting in the inability to remove them from the formed blank after the pressing is completed. Forcible removal will cause the formed blank to crack. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a hole forming tool for pressing that can solve the above-mentioned technical problems.

[0004] The present application provides a hole forming tool for press forming, comprising:

[0005] A fixing member is provided in the pressing mold and is located at the bottom of the pressing mold;

[0006] A hole forming member, the hole forming member extending along a first direction and disposed within the pressing mold, with one end of the hole forming member plugged into the fixing member; the hole forming member having a first cavity therein and a first opening communicating with the first cavity at the other end thereof; the hole forming member being used to form a hole in the middle portion of the molding blank;

[0007] The support assembly has a first state and a second state. When in the first state, the support assembly is arranged in the first cavity, and the support assembly is used to support the hole forming part during the blank forming process; when in the second state, the support assembly is placed outside the first cavity.

[0008] According to the technical solution provided in the present application, a first through hole is provided at the center of the fixing member, and the hole forming member is inserted into the first through hole.

[0009] According to the technical solution provided in this application, the hole forming part is a thin-walled iron pipe.

[0010] According to the technical solution provided in this application, the support assembly includes: a support member and a first cover body. When the support assembly is in a first state, the support member is filled in the first cavity, and the first cover body is clamped at the first opening.

[0011] According to the technical solution provided in this application, the support member is zircon sand.

[0012] According to the technical solution provided in this application, the fixing part has the same cross-section as the pressing mold, the fixing part is arranged at the bottom of the pressing mold, and the outer side wall of the fixing part is in close contact with the inner side wall of the pressing mold.

[0013] According to the technical solution provided in this application, the fixing member is made of rubber.

[0014] The beneficial effects of this application are:

[0015] The present application provides a hole forming tool for press forming, comprising: a fixing part, a hole forming part and a supporting assembly, wherein the fixing part is arranged in the press forming mold and is located at the bottom of the press forming mold; the hole forming part is extended along a first direction and arranged in the press forming mold, and one end of the hole forming part is plugged into the fixing part; the hole forming part has a first cavity inside, and the other end of the hole forming part is provided with a first opening connected to the first cavity; the hole forming part is used to form a hole in the middle of the forming blank; before the blank is formed, the supporting assembly is in a first state In the first state, the support component is arranged in the first cavity to support the hole forming part; the blank is then put into the pressing mold and formed under the action of high pressure; the formed blank together with the hole forming part is then taken out from the pressing mold, and the excess blank on the top of the formed blank is cut off to expose the first opening, and then the support component is taken out from the first cavity through the first opening. At this time, the support component is in the second state; in this case, the hole forming part is appropriately deformed inwardly under external force, which facilitates the removal of the hole forming part from the forming blank and does not cause damage to the forming blank. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0017] Figure 1 This is a schematic diagram of a hole forming tool for pressing provided by the present application;

[0018] Figure 2 This is a cross-sectional view of a hole forming tool for press forming provided by the present application;

[0019] Figure 3 This is a cross-sectional view of a hole forming tool for pressing provided in the present application installed in a pressing mold.

[0020] In the figure: 1. fixing member; 2. hole forming member; 3. first cover body; 4. pressing mold; 5. supporting member. DETAILED DESCRIPTION

[0021] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the relevant utility model and are not intended to limit the utility model. It should also be noted that, for ease of description, only the portions relevant to the utility model are shown in the accompanying drawings.

[0022] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] Example 1

[0024] Please refer to Figure 1-Figure 3 The present application provides a hole forming tool for press forming, comprising:

[0025] The fixing member 1 is arranged in the pressing mold 4 and is located at the bottom of the pressing mold 4;

[0026] The hole forming member 2 extends along a first direction and is disposed within the pressing mold 4, with one end of the hole forming member 2 being plugged into the fixing member 1. The hole forming member 2 has a first cavity therein, and a first opening communicating with the first cavity is formed at the other end of the hole forming member 2. The hole forming member 2 is used to form a hole in the middle of the molding blank.

[0027] The support component has a first state and a second state. When in the first state, the support component is arranged in the first cavity, and the support component is used to support the hole forming part 2 during the blank forming process; when in the second state, the support component is placed outside the first cavity.

[0028] In this embodiment, the first direction is the vertical direction;

[0029] Specifically, the fixing member 1 is provided at the bottom of the pressing mold 4, and the fixing member 1 is used to fix the hole forming member 2 to prevent the hole forming from shifting inside the pressing mold 4;

[0030] Working principle: Before the blank is formed, the support component is in the first state, at this time the support component is arranged in the first cavity to support the hole forming part 2; the blank is then put into the pressing mold 4 and formed under the action of high pressure; the formed blank together with the hole forming part 2 is then taken out from the pressing mold 4, and the excess blank on the top of the formed blank is cut off to expose the first opening, and then the support component is taken out from the first cavity through the first opening. In this case, the hole forming part 2 is appropriately deformed inward under external force, which facilitates the removal of the hole forming part 2 from the formed blank and does not cause damage to the formed blank.

[0031] In some embodiments, a first through hole is provided at the center of the fixing member 1 , and the hole forming member 2 is inserted into the first through hole.

[0032] Specifically, a first through hole is provided at the center of the fixing member 1 , the fixing member 1 is fixedly connected to the bottom of the pressing mold 4 , and the hole forming member 2 is inserted into the first through hole to be stably installed in the pressing mold 4 .

[0033] In some embodiments, the fixing member 1 is made of rubber; the rubber material has good wear resistance and corrosion resistance, and can maintain stable performance under high pressure environment; at the same time, the rubber material has good elasticity, and can firmly fix the hole forming member 2 to prevent it from moving or shaking in the pressing mold 4; this fixing effect helps to maintain the stability and accuracy of the hole forming member 2, and improve the molding efficiency and product quality of the pressing mold 4.

[0034] In some embodiments, the hole forming member 2 is a thin-walled iron pipe.

[0035] Specifically, in this embodiment, the hole forming part 2 is a hollow thin-walled iron pipe. After the support assembly is removed from the first cavity, the interior of the thin-walled iron pipe is no longer supported, and the iron pipe will deform appropriately inward under the action of external force, thereby facilitating removal from the molded blank without causing damage to the molded blank.

[0036] In some embodiments, the support assembly includes: a support member 5 and a first cover body 3. When the support assembly is in a first state, the support member 5 is filled in the first cavity, and the first cover body 3 is clamped at the first opening.

[0037] Specifically, in this embodiment, the support assembly includes: a support member 5 and a first cover 3. When the support assembly is in a first state, the support member 5 is filled in the first cavity, and the first cover 3 is clamped at the first opening to block the first opening, thereby preventing the support member 5 in the first cavity from contaminating the blank. In this embodiment, the first cover 3 is made of rubber.

[0038] Before the blank is formed, the support member 5 is filled in the first cavity, and the first opening is blocked by the first cover 3. The support member 5 is used to support the hole-forming part 2; the blank is then put into the pressing mold 4 and formed under the action of high pressure; the formed blank together with the hole-forming part 2 is then taken out of the pressing mold 4, and the excess blank on the top of the formed blank is cut off to expose the first opening. At this time, the first cover 3 is removed from the first opening, and the support member 5 is removed from the first cavity. In this case, the hole-forming part 2 is appropriately deformed inwardly under external force, which facilitates the removal of the hole-forming part 2 from the formed blank and does not cause damage to the formed blank.

[0039] In some embodiments, the support member 5 is zircon sand.

[0040] In this embodiment, the interior of the thin-walled iron pipe can be filled with zircon sand to enhance the structural strength and ensure structural integrity under high pressure. After the pressing is completed, the first cover 3 is opened to remove the zircon sand, and the thin-walled iron pipe is deformed to facilitate demolding.

[0041] In some embodiments, the fixing member 1 has the same cross-section as the profiling mold 4 , the fixing member 1 is disposed at the bottom of the profiling mold 4 , and the outer sidewall of the fixing member 1 is in close contact with the inner sidewall of the profiling mold 4 .

[0042] Specifically, in this embodiment, the pressing mold 4 is made of rubber material, the fixing part 1 and the pressing mold 4 are both cylindrical structures, the fixing part 1 and the pressing mold 4 have the same cross-section, the fixing part 1 is arranged at the bottom of the pressing mold 4, and the outer wall of the fixing part 1 is tightly attached to the inner wall of the pressing mold 4 to eliminate the gap between the fixing part 1 and the pressing mold 4, to prevent the blank from entering between the fixing part 1 and the pressing mold 4 when the blank is placed, thereby causing the shape of the molded blank to change.

[0043] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the utility model disclosed in this application is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the concept of the utility model. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A hole forming tool for pressing, characterized in that: include: A fixing member (1), the fixing member (1) being arranged in the pressing mold (4) and located at the bottom of the pressing mold (4); A hole forming member (2), the hole forming member (2) extending along a first direction and arranged in the pressing mold (4), and one end of the hole forming member (2) being plugged into the fixing member (1); the hole forming member (2) has a first cavity inside, and the other end of the hole forming member (2) is provided with a first opening communicating with the first cavity; The hole forming member (2) is used to form a hole in the middle of the formed blank; A support assembly, wherein the support assembly has a first state and a second state. When in the first state, the support assembly is arranged in the first cavity, and the support assembly is used to support the hole forming part (2) during the blank forming process; when in the second state, the support assembly is placed outside the first cavity.

2. A hole forming tool for press forming according to claim 1, characterized in that: A first through hole is provided at the center of the fixing member (1), and the hole forming member (2) is inserted into the first through hole.

3. The hole forming tool for press forming according to claim 1, characterized in that: The hole forming part (2) is a thin-walled iron pipe.

4. The hole forming tool for press forming according to claim 1, characterized in that: The support assembly comprises: a support member (5) and a first cover body (3); when the support assembly is in a first state, the support member (5) is filled in the first cavity, and the first cover body (3) is clamped at the first opening.

5. A hole forming tool for press forming according to claim 4, characterized in that: The support member (5) is zircon sand.

6. The hole forming tool for press forming according to claim 1, characterized in that: The fixing member (1) has the same cross-section as the pressing mold (4), the fixing member (1) is arranged at the bottom of the pressing mold (4), and the outer side wall of the fixing member (1) is in close contact with the inner side wall of the pressing mold (4).

7. The hole forming tool for press forming according to claim 1, characterized in that: The fixing member (1) is made of rubber.

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