A press forming die

Abstract

The utility model discloses a kind of material pressing forming die, including underframe, concave die being opened in the surface of underframe, convex die being set in the directly above of concave die;Powder tank assembly, including sliding installation in the top surface of underframe box, fixed in the partition of box interior;When feeding by setting the powder tank assembly that can slide on the top surface of underframe, box moves to the alignment of storage cavity and concave die, the powder in box interior falls into the inside of concave die naturally at this time, complete preliminary feeding, then continue to move to the alignment of push cavity and concave die, utilize push plate and carry out pre-pressing to the powder in the inside of concave die, repeat this operation and pre-pressing for secondary feeding, after box is completely removed from concave die, utilize the extrusion of convex die and concave die, complete to the final pressing of powder, in whole process, powder is located inside storage cavity all the way, there is no residual powder on underframe, feeding is convenient, and the finished product density after pressing is uniform, and specification is consistent.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology, specifically relating to a pressing mold. Background Technology

[0002] In fields such as powder metallurgy, ceramics, pharmaceuticals, and food, powder pressing is the core process for transforming loose powder into shaped, dense molded parts, and the powder pressing mold is the key tooling for realizing this process. It uses a cavity formed by a concave die and a convex die to constrain the shape of the product, and works with a press to transfer external force to the powder, making the powder compacted and dense, producing various molded parts such as blocks and rings.

[0003] Before using the pressing die, powder needs to be fed into the cavity. This process has some inconveniences. First, powder inevitably remains on the worktable during the powder feeding process. Handling the residual powder is inconvenient and inefficient, and feeding the powder is also troublesome, which is not conducive to continuous processing. Second, the gaps between the powder particles are inconsistent, and the density is not uniform. Each pressing makes it difficult to keep the amount and density of powder inside the cavity consistent, resulting in inconsistent specifications of the pressed products. Therefore, a new pressing die needs to be designed to solve this problem. Utility Model Content

[0004] The purpose of this utility model is to provide a pressing mold to solve the problems mentioned in the background art, such as the inconvenience of cleaning residual powder on the table during use, the trouble of adding powder, the impact on overall processing efficiency, and the uneven density of powder in the cavity, resulting in inconsistent specifications of the pressed finished products.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pressing mold, comprising...

[0006] A base frame, a cavity die formed on the surface of the base frame, and a punch set directly above the cavity die;

[0007] The powder box assembly includes a box body that is slidably mounted on the top surface of the base frame, a partition plate fixed inside the box body, a pressing chamber and a storage chamber symmetrically distributed on both sides of the partition plate, a hydraulic rod B installed inside the pressing chamber, and a pressing plate fixed at the bottom end of the hydraulic rod B.

[0008] The bottom of the box is open, and the bottom of the box and the bottom of the partition plate are attached to the top surface of the base frame;

[0009] Hydraulic rod A is installed on the top surface of the base frame, and its output end is fixedly connected to the housing.

[0010] Preferably, the powder box assembly further includes a feeding trough, which is located on the top surface of the storage cavity.

[0011] Preferably, the bottom end of the push plate is adapted to the specifications of the die cavity, and the bottom end of the punch is adapted to the specifications of the die cavity.

[0012] Preferably, a feeding platform is fixed to one end of the base frame, and the top surface of the feeding platform is an inclined surface.

[0013] Preferably, two limiting blocks are symmetrically fixed to the surface of the base frame, and a rubber pad is provided on the side of the limiting blocks facing the box.

[0014] Preferably, two limiting strips are symmetrically fixed on the top surface of the base frame, and the two sides of the box body are respectively attached to the two limiting strips.

[0015] Preferably, a material ejection assembly is provided below the die cavity. The material ejection assembly includes a material ejection piece slidably installed inside the die cavity, a bottom groove formed at the bottom of the die cavity, a bracket that is lifted and installed inside the bottom groove and fixedly connected to the material ejection piece, and a hydraulic rod C installed at the bottom of the bracket.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] When feeding powder using a sliding powder box assembly on the top surface of the base frame, the box moves to align with the receiving cavity and the concave mold. At this point, the powder inside the box naturally falls into the concave mold, completing the initial feeding. Then, it continues to move to align with the pressing cavity and the concave mold, using the pressing plate to pre-press the powder inside the concave mold. This operation is repeated for a second feeding and pre-pressing. Afterward, the box is completely removed from the concave mold, and the final pressing of the powder is completed by the pressing of the punch and the concave mold. Throughout the entire process, the powder remains inside the receiving cavity, and there is no residual powder on the base frame. Feeding is convenient, and the pressed finished product has uniform density and consistent specifications. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0019] Figure 2 This is a front sectional view of the powder box assembly and the die of this utility model;

[0020] Figure 3 This is a front sectional view of the present invention when the receiving cavity and the concave mold are aligned.

[0021] Figure 4 This is a front sectional view of the present invention when the pressing cavity and the die are aligned.

[0022] Figure 5 This is a front sectional view of the material ejection assembly of this utility model;

[0023] In the diagram: 100, base frame; 200, die; 300, punch; 400, powder box assembly; 401, box body; 402, partition plate; 403, pressing chamber; 404, storage chamber; 405, feeding trough; 406, hydraulic rod B; 407, pressing plate; 500, hydraulic rod A; 600, limit stop; 700, material ejection assembly; 701, material ejection plate; 702, bottom groove; 703, bracket; 704, hydraulic rod C; 800, limit strip; 900, unloading platform. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example

[0026] Please see Figures 1 to 5 This is an embodiment of the present invention, which provides a technical solution: a pressing mold, comprising...

[0027] The base frame 100, the concave mold 200 formed on the surface of the base frame 100, and the punch 300 set directly above the concave mold 200. After the powder enters the concave mold 200, the punch 300 and the concave mold 200 cooperate to press the powder.

[0028] The powder box assembly 400 includes a box body 401 slidably mounted on the top surface of the base frame 100, a partition plate 402 fixed inside the box body 401, a pressing cavity 403 and a storage cavity 404 symmetrically distributed on both sides of the partition plate 402, a hydraulic rod B406 installed inside the pressing cavity 403, and a pressing plate 407 fixed to the bottom end of the hydraulic rod B406. The bottom end of the box body 401 is open, and the bottom ends of the box body 401 and the bottom ends of the partition plate 402 are in contact with the top surface of the base frame 100. The storage cavity 404 can hold powder. When the box body 401 moves on the base frame 100, the powder can move on the top surface of the base frame 100 by being pushed by the storage cavity 404, but is stored inside the storage cavity 404 throughout the movement. The component consists of a hydraulic rod A500, which is mounted on the top surface of the base frame 100 and has its output end fixedly connected to the housing 401. During feeding, the hydraulic rod A500 pushes the housing 401 to move until the receiving cavity 404 and the die 200 are aligned. At this point, the powder falls into the die 200. The component continues to move until the pressing cavity 403 is aligned with the die 200. The hydraulic rod B406 pushes the pressing plate 407, which pre-presses the powder inside the die 200. The above steps are repeated for secondary feeding and pre-pressing. After that, the powder box assembly 400 is completely removed from the die 200, and finally the die 200 and the punch 300 cooperate to perform final pressing.

[0029] In this embodiment, preferably, the powder box assembly 400 further includes a feeding trough 405, which is opened on the top surface of the storage cavity 404, and powder can be fed in from the feeding trough 405.

[0030] In this embodiment, preferably, the bottom end of the push plate 407 is adapted to the specifications of the die 200, and the bottom end of the punch 300 is adapted to the specifications of the die 200, so as to ensure the pressing effect.

[0031] In this embodiment, preferably, a feeding platform 900 is fixed to one end of the base frame 100. The top surface of the feeding platform 900 is inclined, and the finished product after molding can be fed from the feeding platform 900.

[0032] In this embodiment, preferably, two limiting blocks 600 are symmetrically fixed on the surface of the base frame 100. The limiting blocks 600 are provided with rubber pads on the side facing the box 401. When the box 401 moves to abut against the limiting blocks 600, the push plate 407 is aligned with the die 200 to ensure the accuracy of pressing.

[0033] In this embodiment, preferably, two limiting strips 800 are symmetrically fixed on the top surface of the base frame 100, and the two sides of the box body 401 are respectively attached to the two limiting strips 800, so that the box body 401 can move stably.

[0034] In this embodiment, preferably, a material ejection assembly 700 is provided below the die 200. The material ejection assembly 700 includes an ejection piece 701 slidably installed inside the die 200, a bottom groove 702 formed at the bottom of the die 200, a bracket 703 that is lifted and installed inside the bottom groove 702 and fixedly connected to the ejection piece 701, and a hydraulic rod C704 installed at the bottom of the bracket 703. During material ejection, the hydraulic rod C704 pushes the bracket 703 and the ejection piece 701 upward to push the molded finished product out of the die 200, which facilitates material ejection.

[0035] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pressing mold, characterized in that: include A base frame (100), a die cavity (200) formed on the surface of the base frame (100), and a punch (300) positioned directly above the die cavity (200); The powder box assembly (400) includes a box body (401) slidably mounted on the top surface of the base frame (100), a partition plate (402) fixed inside the box body (401), a pressing chamber (403) and a storage chamber (404) symmetrically distributed on both sides of the partition plate (402), a hydraulic rod B (406) installed inside the pressing chamber (403), and a pressing plate (407) fixed at the bottom end of the hydraulic rod B (406); The bottom of the box (401) is open, and the bottom of the box (401) and the bottom of the partition plate (402) are in contact with the top surface of the base frame (100); Hydraulic rod A (500) is mounted on the top surface of the base frame (100), and its output end is fixedly connected to the housing (401).

2. The pressing mold according to claim 1, characterized in that: The powder box assembly (400) also includes a feeding trough (405), which is located on the top surface of the receiving cavity (404).

3. The pressing mold according to claim 2, characterized in that: The bottom end of the push plate (407) is adapted to the specifications of the die (200), and the bottom end of the punch (300) is adapted to the specifications of the die (200).

4. The pressing mold according to claim 3, characterized in that: One end of the base frame (100) is fixed with a feeding platform (900), and the top surface of the feeding platform (900) is an inclined surface.

5. The pressing mold according to claim 4, characterized in that: Two limiting blocks (600) are symmetrically fixed on the surface of the base frame (100), and rubber pads are provided on the side of the limiting blocks (600) facing the box (401).

6. The pressing mold according to claim 5, characterized in that: Two limiting strips (800) are symmetrically fixed on the top surface of the base frame (100), and the two sides of the box body (401) are respectively attached to the two limiting strips (800).

7. A pressing mold according to claim 6, characterized in that: A material ejection assembly (700) is provided below the die (200). The material ejection assembly (700) includes a material ejection piece (701) slidably installed inside the die (200), a bottom groove (702) opened at the bottom of the die (200), a bracket (703) that is lifted and installed inside the bottom groove (702) and fixedly connected to the material ejection piece (701), and a hydraulic rod C (704) installed at the bottom of the bracket (703).

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