Metal pellet press mold double withdrawal system

Abstract

The utility model discloses a kind of metal particle pressing mould double withdrawal systems, including mould, lower material withdrawal device and upper pressing and material withdrawal device, the mould includes bottom plate, lower outer tube, middle outer tube, mould outer tube, withdrawal die ejector rod, push ring, ejector rod, positioning cylinder, core, lower pressure ring, metal particle product and upper pressure ring;The mould outer tube, middle outer tube, lower outer tube and bottom plate are sequentially connected from top to bottom;The ejector rod is T-shaped, is located in lower outer tube interior, the push ring and withdrawal die ejector rod are located in the gap between lower outer tube and ejector rod, one end of the withdrawal die ejector rod extends out of bottom plate, and the other end is limited in lower outer tube;The positioning cylinder is located in middle outer tube interior, the core is located in mould outer tube interior, the upper pressure ring, metal particle product and lower pressure ring are located in the gap between mould outer tube and core;The utility model can realize withdrawal mould outer tube, ring withdrawal finished product simultaneously, improve production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of metal particle product pressing, and specifically provides a dual-exit system for the finished product to exit the outer cylinder and detach from the core after the metal particles are pressed. Background Technology

[0002] In industries using hydraulic presses for stamping production, the goal is to produce products made from metal granules as raw materials, pressed into a specific shape using a hydraulic press. The current common method involves placing the metal granules into a mold, pressing the mold with the hydraulic press, and then performing a series of mold-flipping and unflipping processes to form the final product. A production line system for pressing metal granule products, patent number ZL202223079435.9, successfully solves the problem of accidents caused by operator negligence during ordinary hydraulic press production, where the wrong handwheel is turned when pressure should be released. It also addresses the issues of low production efficiency and inconsistent product quality in the original method. However, when the pressed product is conical, due to its special shape, it cannot be completely removed from the mold at once during unflipping. The product, along with the upper and lower pressure rings and the core, must first be removed from the outer cylinder, and then the pressure rings and the product must be removed from the core. Since the mold needs to be flipped over and placed on the demolding cylinder when exiting the outer cylinder, we use a method of pressing on one press (with high precision) and demolding on another press. The operation is relatively complicated. If we are not careful, we may forget to flip the mold when demolding, which may cause the mold to be damaged or even crushed and broken during demolding, resulting in a safety accident.

[0003] Therefore, there is an urgent need for a dual-exit system that allows the finished product to exit the outer cylinder and detach from the core in one go after the metal particles are pressed, suitable for conical pressed products. Utility Model Content

[0004] The purpose of this invention is to provide a double-exit system for metal particle pressing molds, which can effectively solve the above-mentioned problems.

[0005] The technical solution of this utility model is: a double-exit system for metal particle pressing mold, including a mold 300, a lower ejector device 900 and an upper pressing and ejector device 1000. The mold 300 includes a base plate 301, a lower outer cylinder 302, a middle outer cylinder 303, a mold outer cylinder 304, an ejector pin 305, a push ring 306, an ejector pin 307, a positioning cylinder 308, a core 309, a lower pressing ring 310, a metal particle product 311 and an upper pressing ring 312. The mold outer cylinder 304, middle outer cylinder 303, lower outer cylinder 302, and base plate 301 are connected sequentially from top to bottom; the ejector rod 307 is T-shaped and located inside the lower outer cylinder 302; the push ring 306 and the ejector rod 305 are located in the gap between the lower outer cylinder 302 and the ejector rod 307; one end of the ejector rod 305 extends out of the base plate 301, and the other end is limited inside the lower outer cylinder 302; the positioning cylinder 308 is located inside the middle outer cylinder 303. The core 309 is located inside the outer cylinder 304 of the mold. The upper pressure ring 312, the metal particle product 311, and the lower pressure ring 310 are located in the gap between the outer cylinder 304 of the mold and the core 309. The upper pressing and unloading device 1000 includes an upper pressing and unloading cylinder 1001, a hanger 1002, a slider 1003, and an unloading ring body 1004. The slider 1003 is suspended on the upper worktable 101 by the hanger 1002. The upper pressing and unloading cylinder... 1001 is fixed on the upper worktable 101 and its output end is connected to the slider 1003. The slider 1003 can move horizontally under the drive of the upper pressing and unloading cylinder 1001. One side of the lower surface of the slider 1003 is a pressing surface 1003a, and the other side is provided with a groove. The unloading ring 1004 is fixed in the groove of the slider 1003. The lower surface of the unloading ring 1004 is provided with an annular protrusion 1004a that matches the size of the upper pressing ring 312.

[0006] Furthermore, the unloading device 900 includes an unloading cylinder 901, an unloading cylinder support 902, and an unloading pad 903. The unloading cylinder 901 is fixed to the upper surface of the lower worktable 102 by the unloading cylinder support 902. The unloading cylinder 901 is connected to the unloading pad 903. The unloading pad 903 can move horizontally under the drive of the unloading cylinder 901. The upper surface of the unloading pad 903 is a plane.

[0007] Furthermore, the core 309 and the inner wall of the outer cylinder 304 of the mold are provided with corresponding bosses, and a conical gap is formed between the two bosses for placing metal particles.

[0008] Furthermore, the core 309, the positioning cylinder 308, and the top rod 307 are coaxially arranged and positioned sequentially from top to bottom.

[0009] Furthermore, the radial dimension of the top rod 307 is not greater than the inner diameter of the outer cylinder 303.

[0010] Furthermore, the radial dimension of the positioning cylinder 308 is not greater than the radial dimension of the core 309.

[0011] Furthermore, the wall thickness of the annular protrusion 1004a of the retractable ring 1004 is not greater than the wall thickness of the upper pressure ring 312.

[0012] Furthermore, the radial dimension of the core 309 is not greater than the inner diameter of the annular protrusion 1004a of the retractable ring 1004.

[0013] This utility model has the following beneficial effects: This invention enables simultaneous removal of the outer cylinder of the mold, removal of the ring, and removal of the finished product, thereby improving production efficiency. The equipment can achieve one-button automated operation. After loading, pressing, secondary pressing, and mold removal are completed in one go, reducing the chance of errors that are easily made by manual operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model (initial position of demolding). Figure 2 This is a schematic diagram of the structure of the present invention (the core, pressure ring, and product assembly are in contact with the unring body). Figure 3 This is a schematic diagram of the structure of this utility model (core retraction). Figure 4 This is a schematic diagram of the mold structure in this utility model; Figure 5 This is a schematic diagram of the slider structure in this utility model; In the diagram: 101, Upper worktable; 102, Lower worktable; 300, Mold; 301, Base plate; 302, Lower outer cylinder; 303, Middle outer cylinder; 304, Mold outer cylinder; 305, Ejector pin; 306, Push ring; 307, Ejector pin; 308, Positioning cylinder; 309, Core; 310, Lower pressure ring; 311, Metal granule product; 312, Upper pressure ring; 900, Lower ejection device; 901, Lower ejection cylinder; 902, Lower ejection cylinder support; 903, Ejection pad; 1000, Upper pressing and ejection device; 1001, Upper pressing and ejection cylinder; 1002, Hanger; 1003, Slider; 1003a, Pressing surface; 1004, Ejection ring body; 1004a, Annular protrusion. Detailed Implementation

[0015] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0016] like Figures 1-5 As shown, a double-exit system for metal particle pressing molds includes a mold 300, a lower ejector device 900, and an upper pressing and ejector device 1000.

[0017] Mold 300 includes a base plate 301, a lower outer cylinder 302, a middle outer cylinder 303, a mold outer cylinder 304, a ejector pin 305, a push ring 306, an ejector pin 307, a positioning cylinder 308, a core 309, a lower pressure ring 310, metal granules 311, and an upper pressure ring 312; the mold outer cylinder 304, the middle outer cylinder 303, the lower outer cylinder 302, and the base plate 301 are connected sequentially from top to bottom; the ejector pin 307 is T-shaped and is located on the lower outer cylinder 302. Inside, the push ring 306 and the ejector pin 305 are located in the gap between the lower outer cylinder 302 and the ejector pin 307. One end of the ejector pin 305 extends out of the bottom plate 301, and the other end is limited inside the lower outer cylinder 302. The positioning cylinder 308 is located inside the middle outer cylinder 303, the core 309 is located inside the outer cylinder 304 of the mold, and the upper pressure ring 312, the metal particle product 311, and the lower pressure ring 310 are located in the gap between the outer cylinder 304 of the mold and the core 309.

[0018] The upper pressing and unloading device 1000 includes an upper pressing and unloading cylinder 1001, a bracket 1002, a slider 1003, and an unloading ring 1004. The slider 1003 is suspended on the upper worktable 101 by the bracket 1002. The upper pressing and unloading cylinder 1001 is fixed on the upper worktable 101 and its output end is connected to the slider 1003. The slider 1003 can move horizontally under the drive of the upper pressing and unloading cylinder 1001. One side of the lower surface of the slider 1003 is a pressing surface 1003a, and the other side is provided with a groove. The unloading ring 1004 is fixed in the groove of the slider 1003. The lower surface of the unloading ring 1004 is provided with an annular protrusion 1004a that matches the size of the upper pressing ring 312.

[0019] The unloading device 900 includes an unloading cylinder 901, an unloading cylinder support 902, and an unloading pad 903. The unloading cylinder 901 is fixed to the upper surface of the lower worktable 102 by the unloading cylinder support 902. The unloading cylinder 901 is connected to the unloading pad 903. The unloading pad 903 can move horizontally under the drive of the unloading cylinder 901. The upper surface of the unloading pad 903 is a plane.

[0020] In the embodiments described in this utility model, the core 309 and the inner wall of the outer cylinder 304 of the mold are provided with corresponding bosses, and a conical gap is formed between the two bosses for placing metal particles.

[0021] In the embodiments described in this utility model, the core 309, the positioning cylinder 308, and the top rod 307 are coaxially arranged and positioned sequentially from top to bottom.

[0022] In the embodiments described in this utility model, the radial dimension of the top rod 307 is not greater than the inner diameter of the inner and outer cylinder 303.

[0023] In the embodiments described in this utility model, the radial dimension of the positioning cylinder 308 is not greater than the radial dimension of the core 309.

[0024] In the embodiments described in this utility model, the wall thickness of the annular protrusion 1004a of the retractable ring 1004 is not greater than the wall thickness of the upper pressure ring 312.

[0025] In the embodiments described in this utility model, the radial dimension of the core 309 is not greater than the inner diameter of the annular protrusion 1004a of the retractable ring body 1004.

[0026] The specific operation process of this utility model is as follows: During the material return process, such as Figure 1 As shown, the ejector pad 903 moves horizontally to directly below the starting point position under the action of the lower ejector cylinder 901. The ejector ring 1004 inside the slider 1003 in the upper pressing and ejector device 1000 moves horizontally to directly above the starting point position under the action of the upper pressing and ejector cylinder 1001. The ejector pad 903 moves upward as the lower worktable 102 moves upward. During the upward movement, since the upper surface of the ejector pad 903 is flat, the ejector pad 903 pushes the ejector pin 305 upward, and the ejector pin 305 pushes the push ring 306 upward. When the push ring 306 contacts the push rod 307, the push rod 307 pushes the fixed... As the positioning cylinder 308 moves upward, pressure continues to be applied to disengage the positioning cylinder 308 from the inner and outer cylinders 303. The positioning cylinder 308 continues to move upward, pressing against the core 309 and the assembly of the upper pressure ring 312, lower pressure ring 310, and metal particle product 311, causing the assembly to disengage from the outer cylinder 304 of the mold. When the upper pressure ring 312 contacts the annular protrusion 1004a of the retracting ring body 1004, the retracting ring body 1004 pushes the assembly away from the core 309. After reaching the set position, the press releases pressure and removes the core 309, upper pressure ring 312, metal particle product 311, and lower pressure ring 310 respectively, completing the double retraction steps of mold removal and ring removal.

[0027] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A double-exit system for metal particle pressing molds, comprising a mold (300), a lower ejector device (900), and an upper pressing and ejector device (1000), characterized in that, The mold (300) includes a base plate (301), a lower outer cylinder (302), a middle outer cylinder (303), a mold outer cylinder (304), a demolding ejector pin (305), a push ring (306), an ejector pin (307), a positioning cylinder (308), a core (309), a lower pressure ring (310), metal granules (311), and an upper pressure ring (312); the mold outer cylinder (304), the middle outer cylinder (303), the lower outer cylinder (302), and the base plate (301) are connected sequentially from top to bottom. The ejector pin (307) is T-shaped and located inside the lower outer cylinder (302). The push ring (306) and the ejector pin (305) are located in the gap between the lower outer cylinder (302) and the ejector pin (307). One end of the ejector pin (305) extends out of the bottom plate (301), and the other end is limited inside the lower outer cylinder (302). The positioning cylinder (308) is located inside the middle outer cylinder (303). The core (309) is located inside the mold outer cylinder (304). The upper pressure ring (306) is located inside the mold outer cylinder (304). 12) The metal granule product (311) and the lower pressure ring (310) are disposed in the gap between the outer cylinder (304) of the mold and the core (309); the upper pressing and unloading device (1000) includes an upper pressing and unloading cylinder (1001), a hanger (1002), a slider (1003) and an unloading ring body (1004); the slider (1003) is suspended on the upper worktable (101) by the hanger (1002), and the upper pressing and unloading cylinder (1001) is fixed on the upper worktable. The output end of the worktable (101) is connected to the slider (1003). The slider (1003) can move horizontally under the drive of the upper pressing and unloading cylinder (1001). One side of the lower surface of the slider (1003) is a pressing surface (1003a), and the other side is provided with a groove. The unloading ring body (1004) is fixed in the groove of the slider (1003). The lower surface of the unloading ring body (1004) is provided with an annular protrusion (1004a) that matches the size of the upper pressing ring (312).

2. The double-retraction system for metal particle pressing molds according to claim 1, characterized in that, The unloading device (900) includes an unloading cylinder (901), an unloading cylinder support (902), and an unloading pad (903). The unloading cylinder (901) is fixed to the upper surface of the lower worktable (102) by the unloading cylinder support (902). The unloading cylinder (901) is connected to the unloading pad (903). The unloading pad (903) can move horizontally under the drive of the unloading cylinder (901). The upper surface of the unloading pad (903) is a plane.

3. A double-retraction system for metal particle pressing molds according to claim 1, characterized in that, The core (309) and the inner wall of the mold outer cylinder (304) are provided with corresponding bosses, and a conical gap is formed between the two bosses for placing metal particles.

4. A double-retraction system for a metal particle pressing mold according to claim 1, characterized in that, The core (309), positioning cylinder (308) and top rod (307) are coaxially arranged and positioned sequentially from top to bottom.

5. A double-retraction system for a metal particle pressing mold according to claim 1, characterized in that, The radial dimension of the top rod (307) is not greater than the inner diameter of the outer cylinder (303).

6. A double-retraction system for metal particle pressing molds according to claim 1, characterized in that, The radial dimension of the positioning cylinder (308) is not greater than the radial dimension of the core (309).

7. A double-retraction system for metal particle pressing molds according to claim 1, characterized in that, The wall thickness of the annular protrusion (1004a) of the retractable ring (1004) is not greater than the wall thickness of the upper pressure ring (312).

8. A double-retraction system for a metal particle pressing mold according to claim 1, characterized in that, The radial dimension of the core (309) is not greater than the inner diameter of the annular protrusion (1004a) of the unring body (1004).

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