A preforming die for a connector forging

Abstract

The present invention discloses a preforming die for a connector forging, comprising an upper die, a lower die and a closing plate, wherein: a lower forming groove is provided on the parting surface of the lower die, an upper forming groove is provided on the parting surface of the upper die, the upper die is located above the lower die, the lower forming groove is opposite to the upper forming groove, and when the parting surface of the lower die contacts the parting surface of the upper die, the upper forming groove and the lower forming groove form a forming groove; a lower half through hole and an upper half through hole are provided on the lower die and the upper die respectively, the lower half through hole and the upper half through hole are connected with the lower forming groove and the upper forming groove respectively, the lower half through hole and the upper half through hole are opposite to each other, and when the parting surface of the lower die contacts the parting surface of the upper die, the lower half through hole and the upper half through hole form a processing hole; the closing plate is vertically slidably installed on the upper die, and the closing plate is used to close the processing hole. In the present invention, the preforming die for the connector forging proposed by the present invention has a simple structure, is convenient for preliminary forging of the connector, and thus reduces the punching force of forging.

Description

Technical Field

[0001] The invention relates to the technical field of hot processing equipment related to metal materials, and in particular to a preforming die for a connector forging. Background Art

[0002] Forging can eliminate defects such as loose castings produced during the metal smelting process, optimize the microstructure, and preserve complete metal flow lines. The mechanical properties of forgings are generally better than those of castings of the same material. Forgings are mostly used for important parts of related machinery with high loads and severe working conditions, except for simpler shapes that can be made of rolled plates, profiles or welded parts.

[0003] Connectors often require better mechanical properties and are often processed by forging. Figure 1 The connector often requires a large impact force on the forging to be formed, and the forging after forming needs to be processed for connection holes, which makes the processing cycle of the connector long. Summary of the invention

[0004] In order to solve the technical problems existing in the background technology, the present invention provides a preforming die for a connector forging.

[0005] The present invention provides a preforming die for a connector forging, comprising an upper die, a lower die and a closing plate, wherein:

[0006] A lower molding groove is formed on the parting surface of the lower mold, an upper molding groove is formed on the parting surface of the upper mold, the upper mold is located above the lower mold, the lower molding groove is opposite to the upper molding groove, and when the parting surface of the lower mold contacts the parting surface of the upper mold, the upper molding groove and the lower molding groove form a molding groove;

[0007] A lower through hole and an upper through hole are respectively formed on the lower die and the upper die, the lower through hole and the upper through hole are respectively connected with the lower forming groove and the upper forming groove, the lower through hole is opposite to the upper through hole, and when the parting surface of the lower die contacts the parting surface of the upper die, the lower through hole and the upper through hole form a processing hole;

[0008] The closing plate is vertically slidably mounted on the upper die, and the closing plate is used to close the processing hole.

[0009] In order to facilitate the forging of the side connecting hole on the connecting head, as a further optimized solution of the present invention, a lower extrusion groove is also opened on the lower die, the lower extrusion groove is connected with the lower forming groove, and the lower extrusion groove is located on one side of the processing hole.

[0010] As a further optimized solution of the present invention, the distance from the bottom of the lower extrusion trough to the parting surface of the upper die is smaller than the distance from the bottom of the lower forming trough to the parting surface of the upper die. When the material is forged with holes, the holes on the original billet are enlarged, causing part of the metal material to flow outward into the lower extrusion trough. After the forging is cooled, fertilizer is formed in the lower extrusion trough, which needs to be processed and removed. Since the distance from the bottom of the lower extrusion trough to the parting surface of the upper die is smaller than the distance from the bottom of the lower forming trough to the parting surface of the upper die, it is convenient to distinguish between the waste part and the forging part, thereby facilitating the removal of the waste.

[0011] As a further optimized solution of the present invention, it also includes a first partition plate, which is vertically slidably installed on the upper mold, and the first partition plate is used to separate the lower extrusion trough and the lower forming trough to prevent the metal material from flowing to the lower extrusion trough when performing preliminary forming.

[0012] As a further optimized solution of the present invention, a connecting plate is also included, and the tops of the first partition plate and the closing plate are connected to the connecting plate, so as to simultaneously control the up and down movement of the first partition plate and the closing plate.

[0013] As a further optimized solution of the present invention, a fixing lug is provided on the connecting plate to facilitate the movement of the connecting plate.

[0014] In order to facilitate the forging of the side connecting hole on the connecting head, as a further optimized solution of the present invention, an upper extrusion groove is also opened on the upper die, the upper extrusion groove is connected with the upper forming groove, and the upper extrusion groove is located on one side of the processing hole.

[0015] In order to facilitate forging processing, as a further optimized solution of the present invention, the distance from the bottom of the upper extrusion groove to the parting surface of the lower mold is smaller than the distance from the bottom of the upper forming groove to the parting surface of the lower mold.

[0016] As a further optimized solution of the present invention, a positioning block is provided on the parting surface of the upper mold, and a positioning hole is opened on the parting surface of the lower mold. The positioning hole matches the positioning block to facilitate the positioning of the upper mold and the lower mold.

[0017] In the present invention, the preforming die of the connector forging proposed has a simple structure, is convenient for the initial forging of the connector, and forges and expands the connecting hole on the side of the connector after the initial forging, thereby increasing the mechanical properties at the connecting hole. The forging is then subjected to final forging to form the connector. Due to the preforming, the forging punching pressure is reduced.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the existing connector structure;

[0020] Figure 2 It is a schematic diagram of the structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the explosion structure of the present invention;

[0022] Figure 4 Schematic diagram of the upper mold structure of the present invention

[0023] Figure 5 It is a schematic diagram of the lower mold structure of the present invention. DETAILED DESCRIPTION

[0024] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0029] like Figure 2-5 The preforming die of a connector forging shown comprises an upper die 1, a lower die 2 and a closing plate 3, wherein:

[0030] A lower molding groove 20 is formed on the parting surface of the lower mold 2, and an upper molding groove 10 is formed on the parting surface of the upper mold 1. The upper mold 1 is located above the lower mold 2, and the lower molding groove 20 is opposite to the upper molding groove 10. When the parting surface of the lower mold 2 contacts the parting surface of the upper mold 1, the upper molding groove 10 and the lower molding groove 20 form a molding groove.

[0031] The lower die 2 and the upper die 1 are respectively provided with a lower through hole 21 and an upper through hole 11, the lower through hole 21 and the upper through hole 11 are respectively connected with the lower molding groove 20 and the upper molding groove 10, the lower through hole 21 is opposite to the upper through hole 11, and when the parting surface of the lower die 2 contacts the parting surface of the upper die 1, the lower through hole 21 and the upper through hole 11 form a processing hole;

[0032] The closing plate 3 is vertically slidably installed on the upper die 1, and the closing plate 3 is used to close the processing hole. When the blank is placed on the lower die 2, the upper die 1 is covered, and the closing plate 3 extends into the lower molding groove 20 and closes the processing through hole. When the upper die 1 is placed on the lower die 2, the initial forging of the forging is completed. Then, the closing plate 3 is taken out to keep the upper die 1 covering the lower die 2, so as to ensure that the parting surfaces of the upper die 1 and the lower die 2 are in contact. Then, the hole expansion rod is inserted into the processing hole and the component located in the molding cavity is expanded. In order to facilitate the hole expansion process, the lower die 2 can be heated to achieve heating of the component in the molding cavity.

[0033] The lower die 2 is also provided with a lower extrusion groove 22, which is connected to the lower forming groove 20 and is located on one side of the axis of the processing hole;

[0034] In this embodiment, preferably, the distance from the bottom of the lower extrusion groove 22 to the parting surface of the upper mold 1 is smaller than the distance from the bottom of the lower molding groove 20 to the parting surface of the upper mold 1;

[0035] The upper die 1 is also provided with an upper extrusion groove 12, which is connected to the upper molding groove 10 and is located on one side of the processing hole. In this embodiment, the upper extrusion groove 12 is opposite to the lower extrusion groove 22, and when the parting surface of the lower die 2 contacts the parting surface of the upper die 1, the upper extrusion groove 12 and the lower extrusion groove 22 form an extrusion cavity.

[0036] The distance from the bottom of the upper extrusion groove 12 to the parting surface of the lower mold 2 is smaller than the distance from the bottom of the upper molding groove 10 to the parting surface of the lower mold 2, thereby making the thickness of the extrusion cavity smaller than the thickness of the molding cavity, making it easier to cut off the part formed in the extrusion cavity;

[0037] It also includes a first partition plate 4, which is vertically slidably mounted on the upper die 1, and is used to separate the forming cavity and the extrusion cavity. When the upper die 1 and the lower die 2 are in the process of closing the mold, the first partition plate 4 extends into the lower extrusion groove 22, that is, when the blank is initially forged, the first partition plate 4 separates the forming cavity and the extrusion cavity;

[0038] It also includes a connecting plate 5, and the tops of the first partition plate 4 and the closing plate 3 are connected to the connecting plate 5. Since the first partition plate 4 and the closing plate 3 are both extended into the lower die 2 during the preliminary forging process of the blank, when the hole on the side of the blank is expanded and forged, the first partition plate 4 and the closing plate 3 are both moved out of the forming cavity, and then the setting of the connecting plate 5 can simultaneously control the up and down movement of the first partition plate 4 and the closing plate 3;

[0039] The connecting plate 5 is provided with a fixing lug, so as to facilitate the movement of the connecting plate 5, the first partition plate 4 and the closing plate 3 by a lifting device;

[0040] A positioning block is provided on the parting surface of the upper mold 1, and a positioning hole is opened on the parting surface of the lower mold 2, and the positioning hole matches the positioning block.

[0041] In the working process of this embodiment: first, the blank is placed in the lower molding groove 20 of the lower mold 2, and then the upper mold 1, the first partition plate 4 and the closing plate 3 are moved downward at the same time, so that the parting surface of the lower mold 2 contacts the parting surface of the upper mold 1. When the parting surface of the upper mold 1 contacts the parting surface of the lower mold 2, the first partition plate 4 and the closing plate 3 are both moved to the bottom of the lower molding groove 20, so that the inner walls of the first partition plate 4 and the closing plate 3 form the inner wall of the molding cavity;

[0042] Then, the parting surface of the lower mold 2 is ensured to be in contact with the parting surface of the upper mold 1, and the first partition plate 4 and the closing plate 3 are separated from the molding cavity by moving the connecting plate 5 under the action of external force;

[0043] In order to facilitate the hole expansion processing of the side connection hole of the component, the lower die 2 or the upper die 1 is heated, and then a punching column is punched in the processing hole to realize the forging hole expansion processing of the side connection hole of the component. During the hole expansion processing, part of the metal material flows into the extrusion cavity;

[0044] Then take out the formed part, cool it down, remove the plate formed by the metal material flowing into the extrusion cavity, and then carry out the final forging.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A preforming die for a connector forging, characterized in that: It comprises an upper die (1), a lower die (2) and a closing plate (3), wherein: A lower molding groove (20) is formed on the parting surface of the lower mold (2), an upper molding groove (10) is formed on the parting surface of the upper mold (1), the upper mold (1) is located above the lower mold (2), the lower molding groove (20) is opposite to the upper molding groove (10), and when the parting surface of the lower mold (2) contacts the parting surface of the upper mold (1), the upper molding groove (10) and the lower molding groove (20) form a molding groove; A lower through hole (21) and an upper through hole (11) are respectively formed on the lower die (2) and the upper die (1), the lower through hole (21) and the upper through hole (11) are respectively connected to the lower molding groove (20) and the upper molding groove (10), the lower through hole (21) and the upper through hole (11) are opposite to each other, and when the parting surface of the lower die (2) contacts the parting surface of the upper die (1), the lower through hole (21) and the upper through hole (11) form a processing hole; The closing plate (3) is vertically slidably mounted on the upper die (1), and the closing plate (3) is used to close the processing hole.

2. The preforming die for the connector forging according to claim 1, characterized in that: The lower die (2) is also provided with a lower extrusion groove (22), which is communicated with the lower molding groove (20), and is located at one side of the processing hole.

3. The preforming die of the connector forging according to claim 2, characterized in that: The distance from the bottom of the lower extrusion groove (22) to the parting surface of the upper mold (1) is smaller than the distance from the bottom of the lower molding groove (20) to the parting surface of the upper mold (1).

4. The preforming die for the connector forging according to claim 2, characterized in that: It also includes a first partition plate (4), which is vertically slidably mounted on the upper mold (1), and the first partition plate (4) is used to separate the lower extrusion groove (22) and the lower molding groove (20).

5. The preforming die for the connector forging according to claim 2, characterized in that: It also comprises a connecting plate (5), to which the tops of the first partition plate (4) and the closing plate (3) are connected.

6. The preforming die for the connector forging according to claim 5, characterized in that: The connecting plate (5) is provided with a fixing lifting lug.

7. The preforming die for the connector forging according to claim 1, characterized in that: An upper extrusion groove (12) is also provided on the upper die (1), the upper extrusion groove (12) is communicated with the upper forming groove (10), and the upper extrusion groove (12) is located on one side of the processing hole.

8. The preforming die for the connector forging according to claim 7, characterized in that: The distance from the bottom of the upper extrusion groove (12) to the parting surface of the lower mold (2) is smaller than the distance from the bottom of the upper molding groove (10) to the parting surface of the lower mold (2).

9. The preforming die for the connector forging according to claim 1, characterized in that: A positioning block is provided on the parting surface of the upper die (1), and a positioning hole is opened on the parting surface of the lower die (2), and the positioning hole matches the positioning block.

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