Full-automatic pressing die for hard powder

Abstract

The utility model relates to a full-automatic pressing die for hard powder. The pressing die consists of an upper die, a middle die and a lower die, an inner hole of the middle die is divided into an upper section, a middle section and a lower section, the upper section is a large cylinder, the middle section is a cone, the lower section is a small cylinder, the diameter of the large cylinder is A, the diameter of the small cylinder is B, the diameter of the upper end of the cone is A, the diameter of the lower end of the cone is B, the upper die is a cylinder, the diameter of the upper die is A, and the lower die is also a cylinder, and the diameter of the lower die is B; and the middle section of the inner hole of the middle mold is a product cavity. And automatic pressing of products can be realized.

Description

Technical Field

[0001] The utility model relates to a powder pressing and molding process, in particular to a hard powder full-automatic pressing die. Background Art

[0002] A columnar product is formed by pressing hard powder. For many years, efforts have been made to achieve automated production. The reasons are: the powder has poor fluidity and the powder particles are particularly hard, which the mold cannot withstand. Even carbide molds cannot be used, so only ordinary presses can be used. Special manual molds are used. The middle mold consists of three pieces. When adding materials manually, the three middle molds are ejected at the same time and then fall down in three pieces. The product is in the center and is taken out manually. When adding materials next time, the three middle molds are manually put into the mold cavity. It requires multiple people to operate and single-piece production, which is time-consuming and labor-intensive, with low efficiency and high cost. Utility Model Content

[0003] We studied the above-mentioned columnar product and found that it is only an intermediate product in the processing of a certain product. It needs to be sintered and crushed later. There are not many restrictions on the shape of the product. We adjusted the product formation and designed it into a cone shape. On this basis, we proposed a fully automatic pressing mold for hard powder, which can realize the automatic pressing of the product.

[0004] The technical solution of this utility model:

[0005] A fully automatic pressing die for hard powder, the pressing die is composed of an upper die, a middle die and a lower die; the inner hole of the middle die is divided into three sections: upper, middle and lower, wherein the upper section is a large cylinder, the middle section is a cone, and the lower section is a small cylinder, the diameter of the large cylinder is A, the diameter of the small cylinder is B, the upper end diameter of the cone is A, and the lower end diameter is B, the upper die is a cylinder with a diameter of A, and the lower die is also a cylinder with a diameter of B;

[0006] The middle section of the inner hole of the middle mold is the product cavity.

[0007] The pressing process is as follows:

[0008] 1) Initially, the upper die is located above the middle die, and the lower die is located in the inner hole of the middle die, flush with the middle die;

[0009] 2) The middle die moves upward until the lower die is located at the lower section of the inner hole of the middle die, forming the feeding height;

[0010] 3) After the feeding device adds material, the upper die moves downward, and after entering the middle die, the middle die moves downward, so that the upper die and the lower die form a two-way floating pressing, until the upper die is located at the boundary between the upper and middle sections of the inner hole of the middle die, and the lower die is located at the boundary between the middle and lower sections of the inner hole of the middle die, and the pressure is maintained for 1-2 seconds, and the product is pressed and formed;

[0011] 4) The upper die is reset, the middle die moves down until it is flush with the lower die, and the product is ejected from the lower die;

[0012] 5) After taking out the product, repeat steps 1)-4) to complete the pressing of the next product.

[0013] A sealing ring is sleeved on the outer periphery of the upper end of the lower die; during the upward and downward movement of the middle die, the middle die is in contact with the lower die through the sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the installation of a fully automatic pressing mold for hard powder.

[0015] Figure 2 It is a schematic diagram of the structure of a fully automatic pressing die for hard powder.

[0016] In the figure, there are pressing mold 1, upper mold 1-1, middle mold 1-2, lower mold 1-3, and sealing ring 1-4. DETAILED DESCRIPTION

[0017] like Figure 1-2 As shown, a fully automatic pressing mold for hard powder, the pressing mold 1 is composed of an upper mold 1-1, a middle mold 1-2, and a lower mold 1-3; the inner hole of the middle mold 1-2 is divided into three sections: upper, middle, and lower, wherein the upper section is a large cylinder, the middle section is a cone, and the lower section is a small cylinder, the diameter of the large cylinder is A, the diameter of the small cylinder is B, the upper end diameter of the cone is A, and the lower end diameter is B, the upper mold 1-1 is a cylinder with a diameter of A, and the lower mold 1-3 is also a cylinder with a diameter of B;

[0018] The middle section of the inner hole of the middle mold 1-2 is the product cavity;

[0019] A sealing ring 1-4 is sleeved on the outer periphery of the upper end of the lower mold 1-3.

[0020] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A fully automatic pressing die for hard powder, the pressing die consisting of an upper die, a middle die and a lower die; characterized in that: The inner hole of the middle die is divided into three sections: upper, middle and lower. The upper section is a large cylinder, the middle section is a cone, and the lower section is a small cylinder. The diameter of the large cylinder is A, the diameter of the small cylinder is B, the upper end diameter of the cone is A, and the lower end diameter is B. The upper die is a cylinder with a diameter of A, and the lower die is also a cylinder with a diameter of B. The middle section of the inner hole of the middle mold is the product cavity.

2. A fully automatic hard powder pressing die according to claim 1, characterized in that: A sealing ring is sleeved on the outer periphery of the upper end of the lower mold.

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