Precise copper-aluminum extrusion die for cold extrusion forming of automobile parts

Abstract

The utility model provides an automobile part cold extrusion forming precision copper-aluminum extrusion die which comprises a split type die core structure, an upper die comprises a detachable upper female die plate, an upper die core mounting seat is arranged on the upper female die plate, a lower die comprises a detachable lower die stripper plate, and a lower die core mounting seat is arranged on the lower die stripper plate. A lower die core mounting seat matched with the upper die core mounting seat is arranged on the lower die stripper plate, the upper die core mounting seat comprises an upper die main cavity which is concave upwards and a plurality of upper die sub-cavities which are communicated with the upper die main cavity, extend upwards and are arranged in parallel at intervals, and the upper die sub-cavities are used for pressing finished products with pins; the lower die core mounting seat comprises a concave lower die main cavity and a multi-stage extrusion runner communicated with the lower die main cavity, a first extrusion sub-runner extending horizontally guides transverse filling of materials, and a second extrusion sub-runner extending vertically controls the pin forming precision, so that the porosity is reduced, and the yield is increased; the upper female die plate and the lower die stripper plate are independent and detachable, only damaged die blocks are replaced after local abrasion, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of automotive mold manufacturing technology, and more specifically, to a precision copper-aluminum extrusion mold for cold extrusion forming of automotive parts. Background Technology

[0002] Traditional CNC machining of automotive parts, such as copper / aluminum pins, requires layer-by-layer cutting, which is inefficient, takes up to 1 hour to process a single part, results in material waste, low utilization rate, and poor yield.

[0003] Currently, cold extrusion molding is used. Cold extrusion molding is a method of extruding blanks without heating. Cold extrusion involves placing a metal blank in a cold extrusion die cavity, and at room temperature, applying pressure to the blank through a fixed punch on a press, causing plastic deformation to produce the part. Clearly, cold extrusion relies on the die to control the metal flow and on the large-scale transfer of metal volume to form the part. Regarding extrusion equipment, my country has the capability to design and manufacture extrusion presses of various tonnages. In addition to using general-purpose mechanical presses, hydraulic presses, and cold extrusion presses, friction presses and high-speed, high-energy equipment have also been successfully used for cold extrusion production.

[0004] Extrusion technology is an advanced production process characterized by high precision, high efficiency, high quality, and low energy consumption. It is widely used in the large-scale production of small and medium-sized forgings. Compared with hot forging and warm forging processes, it can save 30% to 50% of material, save 40% to 80% of energy, and improve the quality of forgings and the working environment.

[0005] However, although cold extrusion technology is very efficient because it directly forms through molds, traditional cold extrusion molds require complete replacement after the one-piece mold core wears out. This results in long downtime and increases the cost of a single mold replacement by more than 30%. The molds cannot quickly switch product models and cannot meet the diverse needs of automotive parts. At the same time, the flow channel design of ordinary cold extrusion molds is simple, and the material filling is uneven, which easily produces defects such as air holes and cracks, resulting in a yield rate of only 80%-85%.

[0006] Therefore, there is an urgent need for a precision extrusion die that combines high efficiency in forming, high yield rate, and rapid changeover capability. Utility Model Content

[0007] In view of this, the present invention proposes a precision copper-aluminum extrusion die for cold extrusion forming of automotive parts, comprising a split die core structure. The upper die includes a detachable upper concave template 10, on which an upper die core mounting seat 11 is provided. The lower die includes a detachable lower die stripper plate 40, on which a lower die core mounting seat 42 matching the upper die core mounting seat 11 is provided. The upper die core mounting seat 11 includes an upwardly concave upper die main cavity 14 and multiple parallel upper die sub-cavities 12 extending upwardly and communicating with it, for pressing into finished products with pins. The lower die core mounting seat 42 includes a downwardly concave lower die main cavity 45 and multiple extrusion channels communicating with it. A horizontally extending first extrusion sub-channel 43 guides the material to fill laterally, and a vertically extending second extrusion sub-channel 44 controls the pin forming accuracy, thereby reducing porosity and increasing yield. The upper concave template 10 and the lower die stripper plate 40 are independently detachable, and only the damaged module needs to be replaced after local wear, reducing maintenance costs.

[0008] A precision copper-aluminum extrusion die for cold extrusion forming of automotive parts, characterized in that it includes a split die core structure, which consists of an upper die and a lower die. The upper die includes a detachable upper concave template 10, on which an upper die core mounting seat 11 is provided. The lower die includes a detachable lower die stripper plate 40, on which a lower die core mounting seat 42 matching the upper die core mounting seat 11 is provided. The upper die core mounting seat 11 includes an upwardly concave upper die main cavity 14 and multiple parallel upper die sub-cavities 12 extending upwardly and spaced apart, communicating with it, for pressing into a finished product with pins. The lower die core mounting seat 42... 2 includes a recessed lower die main cavity 45 and a multi-stage extrusion channel connected thereto. The multi-stage extrusion channel includes a horizontally extending first extrusion sub-channel 43 and a vertically extending second extrusion sub-channel 44. The second extrusion sub-channel 44 is connected to the first extrusion sub-channel 43 and extends to the gap between the lower die stripper plate 40 and the lower die core mounting seat 42. The horizontally extending first extrusion sub-channel 43 guides the material to fill laterally, and the vertically extending second extrusion sub-channel 44 controls the pin forming accuracy, thereby reducing porosity and increasing yield. The upper recessed template 10 and the lower die stripper plate 40 are independently detachable. After local wear, only the damaged module needs to be replaced, reducing maintenance costs.

[0009] Furthermore, the upper mold core mounting base 11 and the lower mold core mounting base 42 are fixed by quick-change buckles, reducing the mold change time.

[0010] Furthermore, the lower die stripper plate 40 is cylindrical.

[0011] Furthermore, the lower part of the lower die stripper plate 40 is locked to the lower pressure plate 50, the lower pressure plate 50 can move up and down relative to the lower die pad assembly 60 below it, and the bottom of the lower die core mounting base 42 is locked to the upper surface of the lower die pad assembly 60.

[0012] Furthermore, the lower part of the lower mold pad assembly 60 is locked to the lower mold base plate 70 for fixing to external equipment.

[0013] In some embodiments, the upper concave template 10 is provided with a plurality of upper mold core mounting seats 11, and the lower pressure plate 50 is provided with a plurality of lower mold core mounting seats 42 that are the same number as the upper mold core mounting seats 11 and whose positions correspond one-to-one. Multi-cavity synchronous extrusion results in high production efficiency.

[0014] Furthermore, the upper concave template 10 is also provided with a plurality of guide posts 13. The guide posts 13 are located around the plurality of upper mold core mounting seats 11. The lower mold stripper plate 40 is provided with guide holes 41 corresponding to the guide posts 13. The guide posts 13 and the guide holes 41 cooperate to ensure accurate alignment of the upper and lower molds and avoid batch scrapping caused by incorrect molds.

[0015] Furthermore, the upper part of the upper concave template 10 is locked to the upper mold pad assembly 20, and the upper part of the upper mold pad assembly 20 is locked to the upper mold base plate 30, for fixing to external equipment.

[0016] In some embodiments, the upper mold and the lower mold are locked together by at least one set of locking modules. The locking modules include an upper mold locking block 31 and a lower mold locking block 71. The upper mold locking block 31 and the lower mold locking block 71 are locked together to fix the mold in a closed state.

[0017] Furthermore, the upper mold locking block 31 is located at the bottom edge of the upper mold base plate 30, and the lower mold locking block 71 is located at the top edge of the lower mold base plate 70 corresponding to the upper mold locking block 31.

[0018] Furthermore, the material to be extruded is a highly ductile material, which has the characteristics of easy plasticity and strong fluidity, such as copper or aluminum.

[0019] The beneficial effects of this utility model are as follows: This utility model proposes a precision copper-aluminum extrusion die for cold extrusion forming of automotive parts, including a split die core structure. The upper die includes a detachable upper concave template 10, on which an upper die core mounting seat 11 is provided. The lower die includes a detachable lower die stripper plate 40, on which a lower die core mounting seat 42 matching the upper die core mounting seat 11 is provided. The upper die core mounting seat 11 includes an upwardly concave upper die main cavity 14 and an upwardly extending cavity communicating with it. The upper mold cavities 12, which are arranged in parallel at intervals, are used to press the finished product with pins. The lower mold core mounting base 42 includes a recessed lower mold main cavity 45 and a multi-stage extrusion channel connected to it. The horizontally extending first extrusion sub-channel 43 guides the material to fill laterally, and the vertically extending second extrusion sub-channel 44 controls the pin forming accuracy, thereby reducing the porosity and increasing the yield. The upper concave template 10 and the lower mold stripper plate 40 are independently detachable. After local wear, only the damaged module needs to be replaced, thus reducing maintenance costs. Attached Figure Description

[0020] Figure 1 This is a structural diagram of the precision copper-aluminum extrusion die for cold extrusion forming of automotive parts according to this utility model.

[0021] Figure 2 This is a structural diagram of the upper die of the precision copper-aluminum extrusion die for cold extrusion forming of automotive parts according to this utility model.

[0022] Figure 3 This is a structural diagram of the lower die of the precision copper-aluminum extrusion die for cold extrusion forming of automotive parts according to this utility model.

[0023] Figure 4 This is a bottom view of the upper die core mounting base of the precision copper-aluminum extrusion die for cold extrusion forming of automotive parts according to this utility model.

[0024] Figure 5 This is a top view of the lower die core mounting base of the precision copper-aluminum extrusion die for cold extrusion forming of automotive parts according to this utility model.

[0025] Figure 6 This is a cross-sectional view of the multi-stage extrusion flow channel of the precision copper-aluminum extrusion die for cold extrusion forming of automotive parts according to this utility model.

[0026] Explanation of main component symbols

[0027] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model.

[0028] Upper concave template 10, upper mold core mounting base 11, upper mold sub-cavity 12, guide post 13, upper mold main cavity 14, upper mold pad assembly 20, upper mold base plate 30, upper mold locking block 31, lower mold stripper plate 40, guide hole 41, lower mold core mounting base 42, first extrusion sub-flow channel 43, second extrusion sub-flow channel 44, lower mold main cavity 45, lower pressure plate 50, lower mold pad assembly 60, lower mold base plate 70, lower mold lock 71. Detailed Implementation

[0029] Example 1:

[0030] like Figure 1-6 As shown, this utility model proposes a precision copper-aluminum extrusion die for cold extrusion forming of automotive parts, including a split die core structure. The upper die includes a detachable upper concave template 10, on which an upper die core mounting seat 11 is provided. The lower die includes a detachable lower die stripper plate 40, on which a lower die core mounting seat 42 matching the upper die core mounting seat 11 is provided. The upper die core mounting seat 11 includes an upwardly concave upper die main cavity 14 and multiple upwardly extending, parallel upper die sub-cavities 12 connected thereto, for pressing into finished products with pins. The lower die core mounting seat 42 includes a downwardly concave lower die main cavity 45 and a multi-stage extrusion channel connected thereto. A horizontally extending first extrusion sub-channel 43 guides the material to fill laterally, and a vertically extending second extrusion sub-channel 44 controls the pin forming accuracy, thereby reducing porosity and increasing yield. The upper concave template 10 and the lower die stripper plate 40 are independently detachable, and only the damaged module needs to be replaced after local wear, reducing maintenance costs.

[0031] A precision copper-aluminum extrusion die for cold extrusion forming of automotive parts includes a split die core structure, which consists of an upper die and a lower die. The upper die includes a detachable upper concave template 10, on which an upper die core mounting seat 11 is provided. The lower die includes a detachable lower die stripper plate 40, which is cylindrical. The lower die stripper plate 40 is provided with a lower die core mounting seat 42 that matches the upper die core mounting seat 11. The upper die core mounting seat 11 and the lower die core mounting seat 42 are fixed by quick-change buckles, reducing changeover time.

[0032] The upper concave template 10 is provided with a plurality of upper mold core mounting seats 11, and the lower pressure plate 50 is provided with a plurality of lower mold core mounting seats 42, which are the same number as the upper mold core mounting seats 11 and are in one-to-one correspondence with each other. The multi-cavity synchronous extrusion results in high production efficiency.

[0033] The upper concave template 10 is also provided with a plurality of guide posts 13. The guide posts 13 are located around the plurality of upper mold core mounting seats 11. The lower mold stripper plate 40 is provided with guide holes 41 corresponding to the guide posts 13. The guide posts 13 and the guide holes 41 cooperate to ensure accurate alignment of the upper and lower molds and avoid batch scrap caused by incorrect molds.

[0034] The upper mold core mounting base 11 includes an upwardly recessed upper mold main cavity 14 and multiple parallel upper mold sub-cavities 12 extending upwards and spaced apart, which are used to press into finished products with pins. The lower mold core mounting base 42 includes a downwardly recessed lower mold main cavity 45 and a multi-stage extrusion channel connected to it. The multi-stage extrusion channel includes a horizontally extending first extrusion sub-channel 43 and a vertically extending second extrusion sub-channel 44. The second extrusion sub-channel 44 is connected to the first extrusion sub-channel 43 and extends to the gap between the lower mold stripper plate 40 and the lower mold core mounting base 42. The horizontally extending first extrusion sub-channel 43 guides the material to fill laterally, and the vertically extending second extrusion sub-channel 44 controls the pin forming accuracy, thereby reducing porosity and increasing yield. The upper concave template 10 and the lower mold stripper plate 40 are independently detachable. After local wear, only the damaged module needs to be replaced, reducing maintenance costs.

[0035] The lower part of the lower die stripper plate 40 is locked to the lower pressure plate 50. The lower pressure plate 50 can move up and down relative to the lower die pad assembly 60 below it. The bottom of the lower die core mounting base 42 is locked to the upper surface of the lower die pad assembly 60. The lower part of the lower die pad assembly 60 is locked to the lower die base plate 70. The upper part of the upper concave template 10 is locked to the upper die pad assembly 20. The upper part of the upper die pad assembly 20 is locked to the upper die base plate 30.

[0036] The upper mold and the lower mold are locked together by at least one set of locking modules. The locking modules include an upper mold locking block 31 and a lower mold locking block 71. The upper mold locking block 31 and the lower mold locking block 71 are locked together to fix the mold in a closed state. The upper mold locking block 31 is located at the bottom edge of the upper mold base plate 30, and the lower mold locking block 71 is located at the top edge of the lower mold base plate 70 at a position corresponding to the upper mold locking block 31.

[0037] The material to be extruded is a highly ductile material, which is characterized by easy plasticity and strong fluidity, such as copper or aluminum.

[0038] Working principle: The material to be extruded is placed between the upper die core mounting base 11 and the lower die core mounting base 42, and the blank is extruded and shaped by the upper die.

[0039] The beneficial effects of this utility model are as follows: This utility model proposes a precision copper-aluminum extrusion die for cold extrusion forming of automotive parts, including a split die core structure. The upper die includes a detachable upper concave template 10, on which an upper die core mounting seat 11 is provided. The lower die includes a detachable lower die stripper plate 40, on which a lower die core mounting seat 42 matching the upper die core mounting seat 11 is provided. The upper die core mounting seat 11 includes an upwardly concave upper die main cavity 14 and an upwardly extending cavity communicating with it. The upper mold cavities 12, which are arranged in parallel at intervals, are used to press the finished product with pins. The lower mold core mounting base 42 includes a recessed lower mold main cavity 45 and a multi-stage extrusion channel connected to it. The horizontally extending first extrusion sub-channel 43 guides the material to fill laterally, and the vertically extending second extrusion sub-channel 44 controls the pin forming accuracy, thereby reducing the porosity and increasing the yield. The upper concave template 10 and the lower mold stripper plate 40 are independently detachable. After local wear, only the damaged module needs to be replaced, thus reducing maintenance costs.

[0040] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A precise copper-aluminum extrusion die for cold extrusion forming of an automobile part, characterized in that: The system includes a split mold core structure, which consists of an upper mold and a lower mold. The upper mold includes a detachable upper concave template (10) with an upper mold core mounting seat (11) on it. The lower mold includes a detachable lower mold stripper plate (40) with a lower mold core mounting seat (42) that matches the upper mold core mounting seat (11). The upper mold core mounting seat (11) includes an upwardly concave upper mold main cavity (14) and multiple upwardly extending grooves connected to it. The upper mold cavities (12) are arranged in parallel at intervals for pressing into finished products with pins. The lower mold core mounting base (42) includes a recessed lower mold main cavity (45) and a multi-stage extrusion channel connected thereto. The multi-stage extrusion channel includes a horizontally extending first extrusion sub-channel (43) and a vertically extending second extrusion sub-channel (44). The second extrusion sub-channel (44) is connected to the first extrusion sub-channel (43) and extends to the gap between the lower mold stripper plate (40) and the lower mold core mounting base (42). ​ 2. The precision copper-aluminum extrusion die for cold extrusion forming of automobile parts according to claim 1, characterized in that: The upper mold core mounting base (11) and the lower mold core mounting base (42) are fixed by quick-change buckles.

3. The precision copper-aluminum extrusion die for cold extrusion forming of automobile parts according to claim 1, characterized in that: The lower die stripper plate (40) is cylindrical.

4. The precision copper-aluminum extrusion die for cold extrusion forming of automobile parts according to claim 1, characterized in that: The lower part of the lower die stripper plate (40) is locked to the lower pressure plate (50), the lower pressure plate (50) can move up and down relative to the lower die pad assembly (60) below it, and the bottom of the lower die core mounting base (42) is locked to the upper surface of the lower die pad assembly (60).

5. The precise copper-aluminum extrusion die for cold extrusion forming of automobile parts according to claim 4, characterized in that: The lower part of the lower mold pad assembly (60) is locked to the lower mold base plate (70).

6. The precision copper-aluminum extrusion die for cold extrusion forming of automobile parts according to claim 4, characterized in that: The upper concave template (10) is provided with multiple upper mold core mounting seats (11), and the lower pressure plate (50) is provided with multiple lower mold core mounting seats (42) that are the same number as the upper mold core mounting seats (11) and whose positions correspond one-to-one. The multi-cavity synchronous extrusion results in high production efficiency.

7. The precision copper-aluminum extrusion die for cold extrusion forming of automotive parts as described in claim 1, characterized in that: The upper concave template (10) is also provided with a plurality of guide posts (13). The guide posts (13) are located around the plurality of upper mold core mounting seats (11). The lower mold stripper plate (40) is provided with guide holes (41) corresponding to the guide posts (13). The guide posts (13) and guide holes (41) cooperate to ensure that the upper and lower molds are accurately aligned and to avoid batch scrap caused by incorrect molds.

8. The precise copper-aluminum extrusion die for cold extrusion forming of automobile parts according to claim 1, characterized in that: The upper part of the upper concave template (10) is locked to the upper mold pad assembly (20), and the upper part of the upper mold pad assembly (20) is locked to the upper mold base plate (30).

9. The precise copper-aluminum extrusion die for cold extrusion forming of automobile parts according to claim 8, characterized in that: The upper mold and the lower mold are locked together by at least one set of locking modules. The locking modules include an upper mold locking block (31) and a lower mold locking block (71). The upper mold locking block (31) and the lower mold locking block (71) are locked together to fix the mold in a closed state.

10. The precise copper-aluminum extrusion die for cold extrusion forming of automobile parts according to claim 9, characterized in that: The upper mold locking block (31) is located at the bottom edge of the upper mold base plate (30), and the lower mold locking block (71) is located at the top edge of the lower mold base plate (70) corresponding to the upper mold locking block (31).

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