Pier extrusion die for metal shell

Abstract

The utility model discloses a pier extrusion die for a metal shell. The pier extrusion die has the advantages that burrs can be prevented from being generated on a vertical surface, and the thickness of the vertical surface can be increased. The metal shell upsetting and extruding die comprises an upper die part and a lower die part, the upper die part comprises an upper padding plate, an inclined wedge block, a sliding block and an upper material pressing plate, the inclined wedge block, the sliding block and the upper material pressing plate are installed at the bottom of the upper padding plate, the sliding block surrounds the upper material pressing plate, the inclined wedge block is installed on the upper padding plate in an up-down floating mode, and the sliding block is connected to the upper padding plate in a sliding mode. The lower die part comprises a lower backing plate, and a male die, a lower pressure plate and a back-extrusion device which are mounted at the top of the lower backing plate, the lower pressure plate is mounted on the lower backing plate through a first elastic piece, a penetrating cavity is defined between the lower pressure plate and the male die, the back-extrusion device is arranged in the penetrating cavity in a penetrating manner and can move up and down, and the sliding block and the lower pressure plate are arranged in an up-and-down opposite manner; the lower die part further comprises a first jacking piece which is installed on the lower base plate and used for jacking the inclined wedge block so as to drive the inclined wedge block to move towards the side away from the upper material pressing plate.

Description

Technical Field

[0001] The utility model relates to the technical field of metal stamping, in particular to a metal shell extrusion die. Background Art

[0002] The shell of some laptops is made of metal. The structure includes the middle panel and the surrounding facade. In order to achieve lightness and thinness, the thickness of the shell is also made very thin. When the shell is used as a C-shell, some parts need to be assembled to the facade. In order to make the facade have higher strength, the thickness of the facade needs to be thicker than the plate. Although the conventional die-casting method can produce the above products, there are too many defects. For this, the pier extrusion mold is generally used for production. However, when the current pier extrusion mold is processed, burrs are often left on the facade. In the later stage, another process is required to remove these burrs, which is troublesome to process and the thickness of the facade is not ideal.

[0003] Therefore, there is an urgent need for a metal shell extrusion die that can avoid burrs on the facade and increase the thickness of the facade. Utility Model Content

[0004] The utility model aims to provide a metal shell extrusion die which can avoid burrs on the facade and increase the thickness of the facade.

[0005] The cam is secured to the bottom of the sheet metal and is designed to be easily moved when the cam is in the air. The cam is secured to the bottom of the sheet metal and is designed to be easily moved when the cam is in the air.

[0006] Preferably, the back-extrusion device comprises a driver and a back-extrusion block installed at the output end of the driver, and the driver drives the back-extrusion block to move upward when the upper mold part and the lower mold part are demoulded.

[0007] Preferably, the back-extrusion block includes a connecting structure and an extrusion structure, the connecting structure and the extrusion structure are intersected and connected, the extrusion structure penetrates into the penetration cavity, and the connecting structure is arranged below the lower pressing plate.

[0008] Preferably, the back-extrusion device further comprises a mounting platform, which is disposed above the lower pad, the mounting platform is mounted on the output end of the driver, and the connecting structure is mounted on the mounting platform.

[0009] Preferably, the upper mold part also includes an upper baffle installed on the bottom of the upper pad and arranged on one side of the inclined wedge block, and the lower mold part also includes a lower baffle installed on the top of the lower pad and arranged on one side of the lower pressure plate. The upper baffle and the lower baffle abut against each other when the upper mold part and the lower mold part are closed.

[0010] Preferably, the lower mold part also includes a second lifting member, which passes through the lower pad upwards, and the male mold is installed on the second lifting member, and the second lifting member always has a tendency to push the male mold to move upwards.

[0011] Preferably, the inclined wedge block has a right inclined surface inclined to the left, the width of the inclined wedge block increases continuously from top to bottom, the sliding block has a left inclined surface inclined to the left, the left inclined surface and the right inclined surface are slidably matched, and the inclined wedge block is installed at the bottom of the upper pad with the aid of a second elastic member.

[0012] Preferably, the slide block includes an upper half and a lower half, the upper half is arranged on one side of the upper pressing plate, and the lower half is arranged below the upper pressing plate, and the male mold extends upward beyond the lower pressing plate.

[0013] Preferably, the right side of the upper part and the lower part surround a notch, and the end of the upper pressing plate is arranged in the notch.

[0014] Preferably, the upper die part further comprises an upper die base, an upper pad is mounted on the bottom of the upper die base, and the lower die part further comprises a lower die base, and the lower pad is mounted on the lower die base via a support block.

[0015] Compared with the prior art, the lower pressing plate of the utility model is installed on the lower pad by a first elastic member, and the lower pressing plate is kept pressed against the facade, so that the material of the facade will not overflow into the gap between the back-extrusion device and the slider to form burrs, thereby reducing the subsequent side cutting process and avoiding crushing of the facade. Since the back-extrusion device squeezes part of the material originally located in the penetration cavity upward, the thickness of the facade becomes larger. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a schematic structural diagram of a metal shell extrusion die when an upper die part and a lower die part are ready to be molded together.

[0017] Figure 2 The utility model is a schematic structural diagram of the metal shell extrusion die when the upper die part and the lower die part are completely molded.

[0018] Figure 3 The utility model is a schematic structural diagram of the metal shell extrusion die after the upper die part and the lower die part are opened. DETAILED DESCRIPTION

[0019] In order to explain the technical content and structural features of the present invention in detail, further description will be given below in combination with the embodiments and the accompanying drawings.

[0020] like Figure 1 , Figure 2 and Figure 3 As shown, the utility model provides a metal shell extrusion die 100, which solves the problem of burrs on the facade during the extrusion process and effectively increases the thickness of the facade. The metal shell extrusion die 100 of the utility model includes an upper die part 10 and a lower die part 20. The upper die part 10 includes an upper pad 11 and an inclined wedge block 12, a slider 13 and an upper pressing plate 14 installed at the bottom of the upper pad 11. The slider 13 surrounds the upper pressing plate 14, and the inclined wedge block 12 is installed on the upper pad 11 so as to float up and down. The slider 13 is slidably connected to the upper pad 11. The lower die part 20 includes a lower pad 21 and a male mold 22, a lower pressing plate 23 and a back-extrusion device 24 installed on the top of the lower pad 21. The back-squeezing device 24 is arranged on one side of the male mold 22, and the lower pressing plate 23 is arranged on one side of the back-squeezing device 24. The lower pressing plate 23 is installed on the lower pad 21 by means of a first elastic member 25, and the first elastic member 25 always has a tendency to drive the lower pressing plate 23 to move upward. A penetration cavity (not shown) is enclosed between the lower pressing plate 23 and the male mold 22, and the back-squeezing device 24 is penetrated in the penetration cavity so as to be movable up and down. The slider 13 and the lower pressing plate 23 are arranged opposite to each other one above and one below. The lower mold part 20 also includes a first lifting member 26 installed on the lower pad 21 and used to lift the inclined wedge block 12 to drive the inclined wedge block 12 to move away from the upper pressing plate 14.

[0021] During processing, the plate 01 is placed on the male mold 22, and the left end of the plate 01 is exposed from the male mold 22. When the upper mold part 10 and the lower mold part 20 are molded together, Figure 1 As shown, the vertical surface 02 penetrates into the penetration cavity, and the upper pressing plate 14 and the male mold 22 jointly press the plate 01. The upper mold part 10 and the lower mold part 20 continue to close the mold, as shown in FIG. Figure 2 As shown, the back-extrusion device 24 moves upward in the penetration cavity, and extrude the lower half of the facade 02 (the part located in the penetration cavity) upward, so that the thickness of the facade 02 increases. The first lifting member 26 begins to lift the inclined wedge block 12, driving the inclined wedge block 12 to move away from the upper pressing plate 14. The lower half of the facade 02 is squeezed upward to between the slider 13 and the male mold 22. This part of the material thickens along the lateral flow. The slider 13 is subjected to the reaction force of this part of the material and moves away from the upper pressing plate 14, thereby making the thickness of the facade 02 thicker. Afterwards, the upper mold part 10 and the lower mold part 20 are opened, as shown in FIG. Figure 3 As shown, the back squeezing device 24 pushes up the facade 02 so that the sheet material 01 leaves the male mold 22 .

[0022] Because the lower pressing plate 23 of the utility model is installed on the lower pad 21 by a first elastic member 25, the lower pressing plate 23 is kept pressed against the vertical surface 02, and the material of the vertical surface 02 will not overflow into the gap between the back-squeezing device 24 and the slider 13 to form burrs, thereby reducing the subsequent side cutting process and avoiding crushing the vertical surface 02. Because the back-squeezing device 24 squeezes part of the material originally located in the penetration cavity upward, the thickness of the vertical surface 02 becomes larger.

[0023] like Figure 1 , Figure 2 and Figure 3 As shown, the back-extrusion device 24 includes a driver 241 and a back-extrusion block 242 installed at the output end of the driver 241. When the upper mold part 10 and the lower mold part 20 are demolded, the driver 241 drives the back-extrusion block 242 to move upward, so that the back-extrusion block 242 lifts the vertical surface 02, so that the plate 01 leaves the male mold 22, and it is convenient to remove the plate 01 after the shaping. Specifically, the back-extrusion block 242 includes a connecting structure 2421 and an extrusion structure 2422. The connecting structure 2421 is intersected and connected with the extrusion structure 2422, and the extrusion structure 2422 penetrates into the penetration cavity, and the connecting structure 2421 is arranged below the lower pressing plate 23. The back-extrusion block 242 of the utility model is roughly "L"-shaped, but not limited to this.

[0024] Furthermore, the back-extrusion device 24 further includes a mounting platform 243, which is disposed above the lower pad 21, mounted on the output end of the driver 241, and the connecting structure 2421 is mounted on the mounting platform 243. The installation of the mounting platform 243 facilitates the installation of the connecting structure 2421.

[0025] like Figure 1 , Figure 2 and Figure 3 As shown, the upper die part 10 also includes an upper baffle 15 installed at the bottom of the upper pad 11 and arranged on one side of the inclined wedge block 12. The lower die part 20 also includes a lower baffle 27 installed at the top of the lower pad 21 and arranged on one side of the lower press plate 23. The upper baffle 15 and the lower baffle 27 abut against each other when the upper die part 10 and the lower die part 20 are closed. The abutment between the upper baffle 15 and the lower baffle 27 plays a role in positioning and limiting, ensuring that the upper press plate 14, the male mold 22, the slider 13 and the lower press plate 23 shape the sheet 01 according to the specification.

[0026] like Figure 1 , Figure 2 and Figure 3 As shown, the lower mold part 20 also includes a second lifting member 28, which passes through the lower pad 21 upward, and the male mold 22 is installed on the second lifting member 28. The second lifting member 28 always has a tendency to push the male mold 22 upward. The second lifting member 28 provides the male mold 22 with a stable shaping pressure on the plate 01, so as to better shape the plate 01.

[0027] like Figure 1 , Figure 2 and Figure 3 As shown, the inclined wedge block 12 has a right inclined surface tilted to the left, and the width of the inclined wedge block 12 increases continuously from top to bottom. The slider 13 has a left inclined surface tilted to the left. The left inclined surface and the right inclined surface slide in cooperation. When the first lifting member 26 pushes the inclined wedge block 12 to move upward, the right inclined surface and the left inclined surface slide in cooperation, which enables the slider 13 to translate to the left and expand the space for accommodating the facade 02. Preferably, the slider 13 is also slidably mounted on the bottom of the upper pad 11, for example, it can be installed in the form of a guide rail or a slide groove. Specifically, the cross-section of the inclined wedge block 12 is roughly a right-angled trapezoid, but it is not limited to this. The inclined wedge block 12 is installed on the bottom of the upper pad 11 with the help of a second elastic member 121, so that the inclined wedge block 12 has a certain elasticity and is floatingly arranged relative to the upper pad 11.

[0028] like Figure 1 , Figure 2 and Figure 3 As shown, the slider 13 includes an upper part 131 and a lower part 132. The upper part 131 is arranged on one side of the upper pressing plate 14, and the lower part 132 is arranged below the upper pressing plate 14, and the male mold 22 extends upward beyond the lower pressing plate 23. The male mold 22 and the lower pressing plate 23 are staggered with each other to provide a space for accommodating the vertical surface 02. When the upper mold part 10 and the lower mold part 20 are molded together, the lower part 132 of the slider 13 folds the part of the sheet 01 extending from the male mold 22 into the vertical surface 02.

[0029] Furthermore, the right side of the upper half 131 and the lower half 132 enclose a notch 133, and the end of the upper pressing plate 14 is arranged in the notch 133. The lower half 132 of the slider 13 also shapes the facade 02, and the upper pressing plate 14 and the male mold 22 press the plate 01 together.

[0030] like Figure 1 , Figure 2 and Figure 3 As shown, the upper mold part 10 also includes an upper mold base 16. The upper pad 11 is installed at the bottom of the upper mold base 16. The lower mold part 20 also includes a lower mold base 29, and the lower pad 21 is installed on the lower mold base 29 through a support block 291. The lower pad 21 and the lower mold base 29 are arranged one above the other, and a space is enclosed between the two. The space can provide space for the installation of the first jacking member 26 and the second jacking member 28, which is beneficial to the structural arrangement of the first jacking member 26 and the second jacking member 28. Preferably, the first jacking member 26 and the second jacking member 28 are both nitrogen springs, but not limited to this.

[0031] The above disclosure is only a preferred example of the present invention, which cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are all within the scope of the present invention.

Claims

1. A metal shell extrusion die, characterized in that: The invention comprises an upper die part and a lower die part, wherein the upper die part comprises an upper pad and an inclined wedge block, a slider and an upper pressure plate installed at the bottom of the upper pad, the slider surrounds the upper pressure plate, the inclined wedge block is installed on the upper pad so as to float up and down, the slider is slidably connected to the upper pad, the lower die part comprises a lower pad and a male die installed on the top of the lower pad, a lower pressure plate and a back-extrusion device, the back-extrusion device is arranged on one side of the male die, and the lower pressure plate is arranged on one side of the back-extrusion device The lower pressing plate is installed on the lower pad by means of a first elastic member, and the first elastic member always has a tendency to drive the lower pressing plate to move upward. A penetration cavity is surrounded between the lower pressing plate and the male mold, and the back-extrusion device is penetrated in the penetration cavity so as to be movable up and down. The sliding block and the lower pressing plate are arranged opposite to each other one above and one below. The lower mold part also includes a first lifting member installed on the lower pad and used to lift the inclined wedge block to drive the inclined wedge block to move away from the upper pressing plate.

2. The metal shell extrusion die according to claim 1, characterized in that: The back-extrusion device comprises a driver and a back-extrusion block installed at the output end of the driver, and the driver drives the back-extrusion block to move upward when the upper mold part and the lower mold part are demoulded.

3. The metal shell extrusion die according to claim 2, characterized in that: The back-extrusion block comprises a connecting structure and an extrusion structure, wherein the connecting structure is intersected and connected with the extrusion structure, the extrusion structure penetrates into the penetration cavity, and the connecting structure is arranged below the lower pressing plate.

4. The metal shell extrusion die according to claim 3, characterized in that: The back-extrusion device further comprises a mounting platform, which is arranged above the lower pad, the mounting platform is mounted on the output end of the driver, and the connecting structure is mounted on the mounting platform.

5. The metal shell extrusion die according to claim 1, characterized in that: The upper mold part also includes an upper baffle installed on the bottom of the upper pad and arranged on one side of the inclined wedge block, and the lower mold part also includes a lower baffle installed on the top of the lower pad and arranged on one side of the lower pressure plate. The upper baffle and the lower baffle are abutted when the upper mold part and the lower mold part are closed.

6. The metal shell extrusion die according to claim 1, characterized in that: The lower mold part also includes a second lifting member, which passes through the lower pad upward, and the male mold is installed on the second lifting member. The second lifting member always has a tendency to push the male mold to move upward.

7. The metal shell extrusion die according to claim 1, characterized in that: The inclined wedge block has a right inclined surface inclined to the left, and the width of the inclined wedge block increases continuously from top to bottom. The sliding block has a left inclined surface inclined to the left, and the left inclined surface is slidably matched with the right inclined surface. The inclined wedge block is installed at the bottom of the upper pad by means of a second elastic member.

8. The metal shell extrusion die according to claim 1, characterized in that: The sliding block includes an upper half and a lower half, wherein the upper half is arranged at one side of the upper pressing plate, and the lower half is arranged below the upper pressing plate, and the male mold extends upwardly beyond the lower pressing plate.

9. The metal shell extrusion die according to claim 8, characterized in that: The right side of the upper part and the lower part surround a notch, and the end of the upper pressing plate is arranged in the notch.

10. The metal shell extrusion die according to claim 1, characterized in that: The upper die part also includes an upper die seat, and the upper pad is installed on the bottom of the upper die seat. The lower die part also includes a lower die seat, and the lower pad is installed on the lower die seat through a support block.

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