Part extrusion forming die

Abstract

The invention discloses a part extrusion forming die. The part extrusion forming die comprises an upper die base, a lower die base and an ejection assembly. A mounting groove is formed in the surface, close to the upper die base, of the lower die base body, and the equivalent diameter of the end, close to the upper die base, of the mounting groove is larger than that of the end, away from the upper die base, of the mounting groove. The fixing part is composed of a plurality of identical sub-fixing parts, the sub-fixing parts are arranged in the circumferential direction of the inner wall face of the mounting groove, sliding parts are arranged between the sub-fixing parts and the inner wall face of the mounting groove, and the sub-fixing parts have the sliding freedom degree along the inner wall face of the mounting groove through the sliding parts. A containing groove is formed in the wall surface, away from the lower die base body, of the sub-fixing part in a matched mode; the female die is provided with a plurality of sub female dies, the number of the sub female dies is consistent with that of the sub fixing parts, and the sub female dies and the sub fixing parts are arranged in the containing grooves in a one-to-one correspondence mode; through the arrangement, the mold changing operation is simplified, the labor intensity of operators is reduced, and the demolding and mold changing efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of metal blank forming, and in particular to a part extrusion forming die. Background Art

[0002] In the metal blank forming industry, traditional forming processes such as casting have many limitations, especially for copper alloy parts with complex shapes. Due to the characteristics of copper alloy materials (high melting point, low fluidity), defects such as shrinkage, cold shut, pores and slag inclusions are easily generated during the casting process, resulting in low product qualification rate and high scrap rate. In addition, copper alloy materials are expensive, and the casting process is complicated and time-consuming, which further increases manufacturing costs and reduces production efficiency.

[0003] Although the existing extrusion molding technology has partially solved the problems of the casting process, it still faces challenges in practical application. The traditional extrusion die frame has low mold change efficiency, and the mold calibration and demolding process is cumbersome, which not only prolongs the production cycle, but also increases the labor intensity of operators. At the same time, the existing process is difficult to handle parts with complex shapes, and the processing range is limited, which cannot meet the needs of modern manufacturing for efficient production and high-quality products. Summary of the invention

[0004] The main purpose of the present application is to provide a part extrusion molding die, aiming to solve the problems of low mold changing efficiency and complicated mold calibration and demolding processes in traditional extrusion mold frames.

[0005] To achieve the above-mentioned purpose, the present application provides a part extrusion molding die, the device comprising: an upper die base, a lower die base and an ejector assembly; wherein the upper die base is provided with a convex die; the lower die base comprises a lower die base body and a fixing portion, the fixing portion is provided with a concave die; the ejector assembly penetrates the end surface of the lower die base body away from the upper die base, and abuts against the end surfaces of the fixing portion and the concave die away from the upper die base;

[0006] Among them, a mounting groove is provided on the surface of the lower die base body close to the upper die base, and the equivalent diameter of the mounting groove close to one end of the upper die base is larger than the equivalent diameter of the mounting groove away from one end of the upper die base; the fixing part is composed of a plurality of identical sub-fixing parts, each of which is circumferentially arranged along the inner wall surface of the mounting groove, and a sliding part is provided between each of the sub-fixing parts and the inner wall surface of the mounting groove, and each of the sub-fixing parts has the freedom to slide along the inner wall surface of the mounting groove through the sliding part, and the wall surface of the sub-fixing part away from the lower die base body cooperates to form a receiving groove; the concave mold has a plurality of sub-concave molds, the number of the sub-concave molds is consistent with the number of the sub-fixing parts, and a plurality of the sub-concave molds and a plurality of the sub-fixing parts are arranged in the receiving groove in a one-to-one correspondence.

[0007] Optionally, the sliding portion includes:

[0008] A slide groove is provided on a side surface of the sub-fixing portion close to the lower die base body and / or on a side surface of the lower die base body close to the sub-fixing portion;

[0009] The sliding block is arranged on the side surface of the lower die base body close to the sub-fixing portion and / or on the side surface of the sub-fixing portion close to the lower die base body.

[0010] Wherein, the sliding block is partially located in the sliding groove.

[0011] Optionally, the ejection assembly comprises:

[0012] An ejector body is disposed at one end of the fixing portion away from the upper die base, and the end of the ejector body away from the fixing portion extends outside the lower die base body;

[0013] An ejector block is provided at one end of the die close to the ejector body;

[0014] Wherein, a through hole is provided on the end surface of the ejection body close to the ejection block, and a convex rod is provided on the end surface of the ejection block close to the ejection body, and the convex rod is arranged in cooperation with the through hole.

[0015] Optionally, a first groove is formed on the inner bottom wall of the accommodating groove, the ejection block is disposed in the first groove, and the protruding rod extends outside the fixing portion;

[0016] The inner bottom wall of the installation groove is provided with a second groove, and the ejection body is arranged in the second groove;

[0017] Wherein, the portion of the protruding rod extending outside the fixing portion is located in the through hole.

[0018] Optionally, the ejection assembly further includes:

[0019] A fixing sleeve, disposed on the inner bottom wall of the second groove, wherein one end of the fixing sleeve away from the second groove extends to the outside of the fixing portion;

[0020] The end surface of the fixing sleeve close to the second groove has an opening, the opening passes through the end surface of the fixing sleeve away from the second groove, and the protruding rod extends to the outside of the fixing portion through the opening.

[0021] Optionally, the lower die base body, the fixing portion, the concave die and the ejection assembly are coaxially arranged;

[0022] The lower die base body, the fixing portion and the die are flush with the end surface of the upper die base, and an annular groove is provided at the position where the fixing portion and the die are adjacent to the end surface of the upper die base, and an annular pressure plate is provided in the annular groove.

[0023] Optionally, the ejection block is provided with a clamping portion near the concave mold;

[0024] Wherein, the clamping portion is a clamping groove or a clamping block.

[0025] Optionally, the upper die base comprises: an upper die plate, a backing plate and a punch fixing plate; wherein the backing plate is arranged on a surface of the upper die plate close to the lower die base, and a surface of the backing plate away from the upper die plate is symmetrically provided with a plurality of fixing grooves; the punch fixing plate is arranged on a surface of the backing plate away from the upper die plate, and a surface of the punch fixing plate close to the backing plate is symmetrically provided with a plurality of connecting grooves, and the connecting grooves correspond to the fixing grooves one by one;

[0026] Among them, a card interface is opened on the inner side wall of the punch fixing plate near the pad, and a protrusion is provided on the side wall of the punch near the pad, and the punch and the punch fixing plate are connected by the card interface and the protrusion.

[0027] Optionally, the inner wall surfaces on both sides of the fixing groove are provided with clamping grooves near the upper template, and the bottom of the fixing groove is provided with a limiting groove;

[0028] A connecting hole is provided at the bottom of the connecting groove, and the connecting hole penetrates the surface of the punch fixing plate away from the backing plate, and rotation grooves are provided on the inner side walls on both sides of the connecting groove communicating with the connecting hole.

[0029] Optionally, the upper die base further includes:

[0030] A connecting rod, one end of which has a rotating head and the other end of which extends outside the male mold fixing plate, and a clamping block is provided on the side wall surface of the connecting rod;

[0031] An elastic portion, the elastic portion being arranged on the side wall surface of the clamping slot and the bottom of the limiting slot;

[0032] Wherein, when the pad is not connected to the punch fixing plate, the clamping block is located in the rotating groove;

[0033] When connecting the pad with the punch fixing disk, the rotating head is rotated to drive the connecting rod and the clamping block to rotate to the position of the connecting groove, and the rotating head is pressed. The end of the connecting rod away from the rotating head passes through the fixing groove and enters the limiting groove and abuts against the elastic part. At this time, the rotating head is rotated, and the clamping block rotates into the clamping groove and abuts against the elastic part, thereby realizing the connection between the pad and the punch fixing disk.

[0034] The present application provides a part extrusion forming die. When extruding a metal blank, the upper die seat drives the punch to move vertically downward, and the metal blank is placed in the concave die. Through the mutual extrusion of the punch and the concave die, the metal blank placed in the concave die is formed into the required metal part. When fixing the concave die, first slide a plurality of identical sub-fixing parts along the sliding part of the inner wall surface of the installation groove in the direction away from one end of the upper die seat body, so that each sub-fixing part is installed on the inner wall surface of the installation groove, and then each sub-concave die and each sub-fixing part are placed in the receiving groove one by one to achieve the fixing of the concave die. After the metal blank is extruded to obtain the metal part, the ejection assembly is pushed, and each sub-fixing part slides upward along the inner surface of the lower die base body through the sliding part under the action of the ejection assembly. When the sub-fixing part slides to the end surface of the sub-die away from the upper die base, the ejection assembly starts to push each sub-die. Since the equivalent diameter of the end of the mounting groove close to the upper die base is larger than the equivalent diameter of the end of the mounting groove away from the upper die base, the sub-fixing part slides upward smoothly, and each sub-die begins to separate from each other. At this time, the metal part is exposed to the outside, which is more convenient for taking the metal part and simplifies the demoulding process of the metal part. It can be understood that when the die needs to be replaced, it is only necessary to put the die to be replaced into the receiving groove, which also simplifies the die changing operation, reduces the labor intensity of the operator, and improves the efficiency of demoulding and changing the die. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic diagram of the cross-sectional structure of a part extrusion molding die provided in the present application along the vertical direction;

[0036] Figure 2 This is a structural schematic diagram of the first embodiment of the lower mold base body and the fixing part in the embodiment of the present application;

[0037] Figure 3 This is a structural schematic diagram of a second embodiment of the lower mold base body and the fixing part in the embodiment of the present application;

[0038] Figure 4 It is a structural schematic diagram of a third embodiment of the lower mold base body and the fixing part in the embodiment of the present application;

[0039] Figure 5 This is a structural schematic diagram of a first embodiment of a sub-fixing part in an embodiment of the present application;

[0040] Figure 6 This is a schematic structural diagram of a second embodiment of a sub-fixing portion in an embodiment of the present application;

[0041] Figure 7 This is a structural schematic diagram of the first embodiment of the ejection assembly in the embodiments of the present application;

[0042] Figure 8 This is a structural schematic diagram of a second embodiment of an ejection assembly in an embodiment of the present application;

[0043] Fig. 9 It is a schematic diagram of the cross-sectional structure of the upper mold base in the embodiment of the present application.

[0044] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0046] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0047] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; 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 this application can be understood according to specific circumstances.

[0048] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0049] The present application is described in detail below with reference to the accompanying drawings and embodiments.

[0050] Figure 1 A schematic diagram of the cross-sectional structure of a part extrusion molding die provided in this application along the vertical direction, Figure 2 This is a structural diagram of the first embodiment of the lower mold base body and the fixing part in the embodiment of the present application. Figure 3 This is a structural diagram of the second embodiment of the lower mold base body and the fixing part in the embodiment of the present application. Figure 4 This is a structural schematic diagram of the third embodiment of the lower mold base body and the fixing part in the embodiment of the present application. Figure 5 This is a schematic structural diagram of the first embodiment of the sub-fixing part in the embodiment of the present application. Figure 6 This is a schematic diagram of the structure of the second embodiment of the sub-fixing part in the embodiment of the present application. Figure 7 This is a schematic structural diagram of the first embodiment of the ejection assembly in the embodiments of the present application. Figure 8 This is a schematic structural diagram of the second embodiment of the ejection assembly in the embodiment of the present application. Fig. 9 It is a schematic diagram of the structure of the upper mold base in the embodiment of the present application.

[0051] Please combine Figure 1-Figure 4 For reference, the embodiment of the present application provides a part extrusion molding die, which may include: an upper die base 1, a lower die base 2 and an ejector assembly 24; wherein the upper die base 1 is equipped with a punch 101; the lower die base 2 may include a lower die base body 21 and a fixing portion 22, and the fixing portion 22 is equipped with a die 201; the ejector assembly 24 penetrates the end surface of the lower die base body 21 away from the upper die base 1, and abuts against the end surfaces of the fixing portion 22 and the die 201 away from the upper die base 1; wherein a mounting groove is provided on the surface of the lower die base body 21 close to the upper die base 1, and the equivalent diameter of the mounting groove close to the upper die base 1 is greater than the equivalent diameter of the mounting groove away from the upper die base 1;

[0052] The fixing portion 22 is composed of a plurality of identical sub-fixing portions 221, each of which is arranged along the inner wall surface of the mounting groove in the circumferential direction, and a sliding portion 23 is provided between each of the sub-fixing portions 221 and the inner wall surface of the mounting groove, and each of the sub-fixing portions 221 has a sliding freedom along the inner wall surface of the mounting groove through the sliding portion 23, and the wall surface of the sub-fixing portion 221 away from the lower die base body 21 cooperates to form a receiving groove;

[0053] The concave mold 201 has a plurality of sub-concave molds 2011 , the number of the sub-concave molds 2011 is consistent with the number of the sub-fixing portions 221 , and the plurality of sub-concave molds 2011 and the plurality of sub-fixing portions 221 are disposed in the receiving groove in a one-to-one correspondence.

[0054] Optionally, a mounting groove is provided on the surface of the lower mold base body 21 close to the upper mold base 1, and the equivalent diameter of the mounting groove close to the upper mold base 1 is larger than the equivalent diameter of the mounting groove away from the upper mold base 1; the shape of the inner surface of the mounting groove is consistent with the shape of the outer surface of the fixing portion 22, such as Figure 2-Figure 6 As shown, the shape of the mounting groove provided in this embodiment is a flat-top cone. By way of example, the flat-top cone can be a flat-top circular cone or a flat-top prism. It is only necessary that the equivalent diameter of the mounting groove at one end close to the upper die base 1 is larger than the equivalent diameter of the mounting groove at one end away from the upper die base 1.

[0055] like Figure 2 and Figure 3 As shown, the number of the sub-die 2011 is consistent with the number of the sub-fixing portions 221 , and a plurality of sub-die 2011 and a plurality of sub-fixing portions 221 are disposed in the receiving groove in a one-to-one correspondence.

[0056] For example, when the number of sub-die 2011 is confirmed, the fixing portion 22 can be cut into several sub-fixing portions 221 according to the specific shape of the part to be formed; if the part to be formed is a regular-shaped part, the fixing portion 22 can be cut into two sub-fixing portions 221. If the part to be formed is an irregular-shaped part, the fixing portion 22 can be cut into four sub-fixing portions 221.

[0057] Similarly, the die 201 can be cut into several sub-die dies 2011 according to the specific shape of the part to be formed; if the part to be formed is a regular-shaped part, the die 201 can be cut into two sub-die dies 2011. If the part to be formed is an irregular-shaped part, the die 201 can be cut into four sub-die dies 2011.

[0058] Specifically, the upper die base 1 is equipped with a punch 101, and the lower die base 2 includes a lower die base body 21 and a fixing portion 22, and the fixing portion 22 is equipped with a die 201; the upper die base 1 and the lower die base 2 are fixed on an extrusion device, which can be a hydraulic press or a friction press.

[0059] When the metal blank is extruded, the upper die seat 1 drives the punch 101 to move vertically downward, and the metal blank is placed in the die 201. Through the mutual extrusion of the punch 101 and the die 201, the metal blank placed in the die 201 is formed into the required metal parts.

[0060] Among them, when fixing the die 201, firstly, slide a plurality of identical sub-fixing parts 221 along the sliding part 23 of the inner wall surface of the mounting groove toward the direction of the lower die base body 21 away from one end of the upper die base 1, so that each sub-fixing part 221 is installed on the inner wall surface of the mounting groove, and then place each sub-die 2011 and each sub-fixing part 221 in the accommodating groove one by one to fix the die 201, and extrude the part to be formed through the extrusion equipment.

[0061] After the metal blank is extruded to obtain a metal part, the ejection assembly 24 is pushed, and each sub-fixing portion 221 slides upward along the inner surface of the lower die base body 21 through the sliding portion under the action of the ejection assembly 24. When the sub-fixing portion 221 slides until the sub-fixing portion 221 is flush with the end surface of the sub-die 2011 away from the upper die base 1, the ejection assembly 24 begins to push each sub-die 2011. Since the equivalent diameter of the end of the mounting groove close to the upper die base 1 is larger than the equivalent diameter of the end of the mounting groove away from the upper die base 1, the sub-fixing portion 221 slides upward smoothly, and the sub-die 2011 begins to separate from each other. At this time, the metal parts fall off the die 201 and are exposed to the outside, which makes it more convenient to take out the metal parts and simplifies the demolding process of the metal parts. It is understandable that when the die 201 needs to be replaced, only the punch 101 and the die 201 need to be replaced, and the die 201 to be replaced is placed into the receiving groove. This also simplifies the die changing operation, reduces the labor intensity of the operator, and improves the efficiency of demolding and die changing.

[0062] It should be noted that No. 45 steel (HRC23-26 after quenching and tempering) can be used to manufacture the lower die base body 21 and the fixing part 22, which can play a protective role and increase the service life; mold steel (HRC48-55 after quenching) can be used to manufacture the die 201.

[0063] Please combine Figure 3-Figure 6 For reference, in an exemplary embodiment, the sliding portion 23 includes: a slide groove 231 and a slider 232; wherein the slide groove 231 is arranged on the side surface of the sub-fixing portion 221 close to the lower mold base body 21 and / or is arranged on the side surface of the lower mold base body 21 close to the sub-fixing portion 221; the slider 232 is arranged on the side surface of the lower mold base body 21 close to the sub-fixing portion 221 and / or is arranged on the side surface of the sub-fixing portion 221 close to the lower mold base body 21; wherein the slider 232 is partially located in the slide groove 231.

[0064] In one embodiment, if Figure 3 and Figure 5As shown, the slider 232 is provided on the side surface of the sub-fixing part 221 close to the lower die base body 21, and the slide groove 231 is provided on the side surface of the lower die base body 21 close to the sub-fixing part 221. When the fixing part 22 is placed in the installation groove provided on the surface of the lower die base body 21 close to the upper die base 1, by snapping the slider 232 on the side surface of the sub-fixing part 221 into the slide groove 231 on the side surface of the lower die base body 21, each sub-fixing part 221 slides through the slider 232 and the slide groove 231, and is installed in the installation groove to form the fixing part 22.

[0065] In one embodiment, if Figure 4 and Figure 6 As shown, the slider 232 is provided on the side surface of the lower die base body 21 close to the sub-fixing portion 221, and the slide groove 231 is provided on the side surface of the sub-fixing portion 221 close to the lower die base body 21. When the fixing portion 22 is placed in the installation groove provided on the surface of the lower die base body 21 close to the upper die base 1, by snapping the slider 232 on the side surface of the lower die base body 21 into the slide groove 231 on the side surface of the sub-fixing portion 221, each sub-fixing portion 221 slides through the slider 232 and the slide groove 231, and is installed in the installation groove to form the fixing portion 22.

[0066] Please combine Figure 1 , Figure 7 and Figure 8 For reference, in an exemplary embodiment, the ejector assembly 24 may include: an ejector body 241, which is disposed at one end of the fixing portion 22 away from the upper mold base 1, and the end of the ejector body 241 away from the fixing portion 22 extends to the outside of the lower mold base body 21; an ejector block 242, which is disposed at one end of the die 201 close to the ejector body 241; wherein a through hole 2411 is formed on the end surface of the ejector body 241 close to the ejector block 242, and a convex rod 2421 is formed on the end surface of the ejector block 242 close to the ejector body 241, and the convex rod 2421 is matched with the through hole 2411.

[0067] Furthermore, a first groove is formed on the inner bottom wall of the accommodating groove, the ejection block 242 is arranged in the first groove, and the protruding rod 2421 extends to the outside of the fixing part 22; a second groove is formed on the inner bottom wall of the mounting groove, and the ejection body 241 is arranged in the second groove; wherein, the part of the protruding rod 2421 extending to the outside of the fixing part 22 is located in the through hole 2411.

[0068] Furthermore, the ejection assembly 24 also includes: a fixing sleeve 243, which is arranged on the inner bottom wall of the second groove, and one end of the fixing sleeve 243 away from the second groove extends to the outside of the fixing portion 22; wherein, the end surface of the fixing sleeve 243 close to the second groove has an opening, the opening penetrates the end surface of the fixing sleeve 243 away from the second groove, and the protruding rod 2421 extends to the outside of the fixing portion 22 through the opening.

[0069] In some embodiments, the lower die base body 21, the fixing portion 22, the die 201 and the ejection assembly 24 are coaxially arranged; wherein, the lower die base body 21, the fixing portion 22 and the die 201 are flush with the end faces close to the upper die base 1, and an annular groove 222 is provided at the position where the fixing portion 22 and the die 201 are adjacent to the end faces close to the upper die base 1, and an annular pressure plate is provided in the annular groove 222.

[0070] Specifically, after the die 201 and the fixing portion 22 are installed, the annular pressure plate is installed in the annular groove 222; it can be understood that when the extrusion equipment is used to extrude the part to be formed, since the annular pressure plate is located on both the fixing portion 22 and the upper surface of the die 201, the die 201 is limited to prevent the die 201 from shifting during operation, and the annular pressure plate can be fixed in the annular groove 222 by bolts.

[0071] In one embodiment, a clamping portion 2422 is provided on the end surface of the ejection block 242 close to the die 201 ; wherein the clamping portion 2422 is a clamping groove or a clamping block.

[0072] like Figure 7 As shown, the ejector block 242 is provided with a clamping portion 2422 near the die 201, and the clamping portion 2422 is a clamping block; when the die 201 is installed, a groove adapted to the clamping block is provided at the bottom of the die 201, and the clamping block can be clamped into the groove at the bottom of the die 201 to realize the mold correction of the die 201, and the die 201 is further limited and fixed, so that the die 201 is installed more firmly.

[0073] like Figure 8 As shown, the ejector block 242 is provided with a clamping portion 2422 near the die 201, and the clamping portion 2422 is a clamping groove; when the die 201 is installed, a protrusion adapted to the clamping groove is provided at the bottom of the die 201, and the die 201 can be corrected by clamping the protrusion at the bottom of the die 201 into the clamping groove, and the die 201 is further limited and fixed, so that the die 201 is installed more firmly.

[0074] like Fig. 9As shown, in an exemplary embodiment, the upper die base 1 includes: an upper die plate 11, a pad 12 and a punch fixing plate 13; wherein the upper die plate 11 is used to be fixed to the upper end of the hydraulic press; the pad 12 is arranged on the surface of the upper die plate 11 close to the lower die base 2, and the surface of the pad 12 away from the upper die plate 11 is symmetrically provided with a plurality of fixing grooves; the punch fixing plate 13 is arranged on the surface of the pad 12 away from the upper die plate 11, and the surface of the punch fixing plate 13 close to the pad 12 is symmetrically provided with a plurality of connecting grooves, and the connecting grooves correspond to the fixing grooves one by one; wherein a card interface is provided on the inner side wall of the punch fixing plate 13 close to the pad 12, and a protrusion is provided on the side wall of the punch 101 close to the pad 12, and the punch 101 and the punch fixing plate 13 are connected by the card interface and the protrusion.

[0075] Furthermore, a clamping groove is provided on the inner wall surface on both sides of the fixing groove near the upper template 11, and a limiting groove is provided at the bottom of the fixing groove; a connecting hole is provided at the bottom of the connecting groove, the connecting hole passes through the surface of the punch fixing plate 13 away from the pad 12, and a rotating groove is provided on the inner wall on both sides of the connecting groove connected to the connecting hole.

[0076] Furthermore, the upper die base 1 also includes: a connecting rod 14 and an elastic part (not marked in the figure); wherein, one end of the connecting rod 14 has a rotating head and the other end extends to the outside of the punch fixing disk 13, and the side wall surface of the connecting rod is provided with a clamping block; the elastic part is arranged on the side wall surface of the clamping groove and the bottom of the limiting groove; wherein, when the pad 12 is not connected to the punch fixing disk 13, the clamping block is located in the rotating groove; when the pad 12 is connected to the punch fixing disk 13, the connecting rod 14 and the clamping block are driven to rotate to the position of the connecting groove by rotating the rotating head, and the rotating head is pressed, and the end of the connecting rod 14 away from the rotating head passes through the fixed groove into the limiting groove and abuts against the elastic part. At this time, the rotating head is rotated, and the clamping block rotates into the clamping groove and abuts against the elastic part, thereby realizing the connection between the pad 12 and the punch fixing disk 13.

[0077] Specifically, when installing the punch 101, the punch 101 is clamped with the punch fixing plate 13 through the protrusion provided on the side wall of the punch 101 near the backing plate 12; when the punch fixing plate 13 is connected and installed with the backing plate 12, since one end of the connecting rod 14 has a rotating head and the other end extends to the outside of the punch fixing plate 13, the connecting rod 14 can be extended to the outside of the punch fixing plate 13. One end is quickly limited with the fixing groove of the backing plate 12, and then the connecting rod 14 and the clamping plate are driven by the rotating head. The block rotates to the position of the connecting groove, presses the rotating head, and the end of the connecting rod 14 away from the rotating head passes through the fixed groove into the limiting groove and abuts against the elastic part. At this time, the rotating head is rotated, and the clamping block rotates into the clamping groove and abuts against the elastic part, thereby realizing the connection between the pad 12 and the punch fixing plate 13; wherein, the setting of the elastic part enables the punch fixing plate 13 to be tightly installed together with the pad 12 through the connecting rod 14, thereby preventing the punch fixing plate 13 from loosening or shifting, thereby tightly fixing the punch 101 on the upper die seat 1.

[0078] The fastening of the punch 101 and the die 201 effectively prevents the loosening of the punch 101 and the die 201, thereby preventing the part to be formed from shifting during die pressing, and solves the problems of high scrap product rate and low material utilization rate caused by the complex copper alloy part forming process.

[0079] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A part extrusion molding die, characterized in that: include: An upper die base (1) is provided with a punch (101); A lower die base (2) comprises a lower die base body (21) and a fixing portion (22), wherein the fixing portion (22) is provided with a concave die (201); An ejector assembly (24) penetrates the end surface of the lower die base body (21) away from the upper die base (1), and abuts against the end surfaces of the fixing portion (22) and the concave die (201) away from the upper die base (1); Wherein, a mounting groove is provided on the surface of the lower die base body (21) close to the upper die base (1), and the equivalent diameter of the mounting groove close to the upper die base (1) is greater than the equivalent diameter of the mounting groove away from the upper die base (1); The fixing portion (22) is composed of a plurality of identical sub-fixing portions (221), each of the sub-fixing portions (221) being arranged along the circumferential direction of the inner wall surface of the installation groove, a sliding portion (23) being provided between each of the sub-fixing portions (221) and the inner wall surface of the installation groove, each of the sub-fixing portions (221) having a sliding freedom along the inner wall surface of the installation groove through the sliding portion (23), and a receiving groove being formed in cooperation with a wall surface of the sub-fixing portion (221) away from the lower die base body (21); The concave mold (201) has a plurality of sub-concave molds (2011), the number of the sub-concave molds (2011) is consistent with the number of the sub-fixing parts (221), and the plurality of sub-concave molds (2011) and the plurality of sub-fixing parts (221) are arranged in the accommodating groove in a one-to-one correspondence.

2. The part extrusion molding die according to claim 1, characterized in that: The sliding part (23) comprises: A slide groove (231) is provided on a side surface of the sub-fixing portion (221) close to the lower die base body (21) and / or on a side surface of the lower die base body (21) close to the sub-fixing portion (221); A sliding block (232) is arranged on a side surface of the lower die base body (21) close to the sub-fixing portion (221) and / or on a side surface of the sub-fixing portion (221) close to the lower die base body (21); Wherein, the sliding block (232) is partially located in the sliding groove (231) and is slidably engaged with the sliding groove (231).

3. The part extrusion molding die according to claim 1, characterized in that: The ejection assembly (24) comprises: An ejector body (241) is disposed at one end of the fixing portion (22) away from the upper die base (1), and the end of the ejector body (241) away from the fixing portion (22) extends outside the lower die base body (21); An ejector block (242) is disposed at one end of the female mold (201) close to the ejector body (241); The ejection body (241) is provided with a through hole (2411) on the end surface close to the ejection block (242), and the ejection block (242) is provided with a protruding rod (2421) on the end surface close to the ejection body (241), and the protruding rod (2421) is arranged in coordination with the through hole (2411).

4. The part extrusion molding die according to claim 3, characterized in that: The inner bottom wall of the accommodating groove is provided with a first groove, the ejection block (242) is arranged in the first groove, and the protruding rod (2421) extends to the outside of the fixing portion (22); The inner bottom wall of the installation groove is provided with a second groove, and the ejection body (241) is arranged in the second groove; Wherein, the portion of the protruding rod (2421) extending outside the fixing portion (22) is located inside the through hole (2411).

5. The part extrusion molding die according to claim 4, characterized in that: The ejection assembly (24) further comprises: A fixing sleeve (243) is arranged on the inner bottom wall of the second groove, and one end of the fixing sleeve (243) away from the second groove extends to the outside of the fixing portion (22); The end surface of the fixing sleeve (243) close to the second groove has an opening, the opening passes through the end surface of the fixing sleeve (243) away from the second groove, and the protruding rod (2421) extends through the opening to the outside of the fixing portion (22).

6. The part extrusion molding die according to claim 4, characterized in that: The lower die base body (21), the fixing portion (22), the female die (201) and the ejection assembly (24) are coaxially arranged; The lower die base body (21), the fixing portion (22) and the die (201) are flush with the end surface close to the upper die base (1), and an annular groove (222) is provided at a position where the fixing portion (22) and the die (201) are adjacent to the end surface close to the upper die base (1), and an annular pressure plate is provided in the annular groove (222).

7. The part extrusion molding die according to claim 3, characterized in that: The ejection block (242) is provided with a clamping portion (2422) on the end surface close to the concave mold (201); Wherein, the clamping portion (2422) is a clamping groove or a clamping block.

8. The part extrusion molding die according to claim 1, characterized in that: The upper die base (1) comprises: Upper template (11); A pad (12) is arranged on a surface of the upper mold plate (11) close to the lower mold base (2), and a surface of the pad (12) away from the upper mold plate (11) is symmetrically provided with a plurality of fixing grooves; A punch fixing plate (13) is arranged on a surface of the backing plate (12) away from the upper mold plate (11), and a surface of the punch fixing plate (13) close to the backing plate (12) is symmetrically provided with a plurality of connection grooves, the connection grooves corresponding to the fixing grooves one by one; A card interface is provided on the inner side wall of the punch fixing plate (13) near the backing plate (12), a protrusion is provided on the side wall of the punch (101) near the backing plate (12), and the punch (101) and the punch fixing plate (13) are card-connected via the card interface and the protrusion.

9. The part extrusion molding die according to claim 8, characterized in that: The inner wall surfaces on both sides of the fixing groove are provided with clamping grooves near the upper template (11), and the bottom of the fixing groove is provided with a limiting groove; A connecting hole is provided at the bottom of the connecting groove, and the connecting hole penetrates the surface of the punch fixing plate (13) away from the backing plate (12), and rotation grooves are provided on the inner side walls on both sides of the connecting groove that are connected to the connecting hole.

10. The part extrusion molding die according to claim 9, characterized in that: The upper die base (1) further comprises: A connecting rod (14), one end of which has a rotating head and the other end of which extends outside the male die fixing plate (13), and a clamping block is provided on the side wall surface of the connecting rod; An elastic portion, the elastic portion being arranged on the side wall surface of the clamping slot and the bottom of the limiting slot; Wherein, when the backing plate (12) is not connected to the punch fixing plate (13), the clamping block is located in the rotating groove; When the pad (12) is connected to the punch fixing plate (13), the rotating head is rotated to drive the connecting rod (14) and the clamping block to rotate to the position of the connecting groove, and the rotating head is pressed. The end of the connecting rod (14) away from the rotating head passes through the fixing groove and enters the limiting groove and abuts against the elastic part. At this time, the rotating head is rotated, and the clamping block rotates into the clamping groove and abuts against the elastic part, thereby realizing the connection between the pad (12) and the punch fixing plate (13).

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