Die structure with lower female die capable of preventing waste materials from jumping

Abstract

The utility model discloses a die structure with a lower concave die preventing waste materials from jumping, which comprises a punch and the lower concave die, the punch is positioned above the lower concave die, a knife edge upper hole and a knife edge lower hole are arranged in the middle of the lower concave die, and the radial size of the upper end of the knife edge upper hole is larger than that of the lower end of the knife edge upper hole. The radial size of the upper end of the knife edge lower hole is smaller than that of the lower end of the knife edge lower hole, and the knife edge upper hole is communicated with the knife edge lower hole. The die structure with the lower female die capable of preventing the waste from jumping is used in the hardware punching process, the punched waste is clamped in the lower female die through the inclined and shrunk knife edge, the waste can only fall down and cannot jump to the upper portion of the die, the service life of the die is effectively guaranteed, and scrapping is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a mold structure for preventing waste from jumping out of a lower concave mold. Background Art

[0002] In the production process of hardware molds, when punching is required, the waste material is easily brought up after the punch rises. The waste material will break away from the punch and jump to different ends of the mold, causing the mold to be scrapped. The conventional anti-jump waste structure has complex processing and high production cost. Utility Model Content

[0003] One purpose of the utility model is to provide a die structure for preventing waste from jumping out of a lower concave die, which can prevent waste from jumping onto the die through simple radial size and angle changes, and is safe, reliable and highly practical.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] A mold structure for preventing waste from jumping out of a lower die comprises a punch and a lower die, wherein the punch is located above the lower die, and an upper hole and a lower hole of a knife edge are arranged in the middle of the lower die, wherein the upper radial dimension of the upper hole of the knife edge is greater than the lower radial dimension of the upper hole of the knife edge, and the upper radial dimension of the lower hole of the knife edge is smaller than the lower radial dimension of the lower hole of the knife edge, and the upper hole of the knife edge is connected with the lower hole of the knife edge.

[0006] As a preferred technical solution, the vertical height between the upper end of the knife edge upper hole and the lower end of the knife edge upper hole is 5 mm.

[0007] As a preferred technical solution, the diameter of the upper end of the hole on the blade is 0.05 mm larger than the diameter of the lower end of the hole on the blade.

[0008] As a preferred technical solution, the side wall of the hole on the blade narrows inward by 0.286° from top to bottom.

[0009] As a preferred technical solution, the side wall of the hole under the knife edge expands outward by 1° from top to bottom.

[0010] The beneficial effects of the utility model are: providing a mold structure for preventing waste from jumping out of a lower concave die, and the mold structure for preventing waste from jumping out of a lower concave die is used in a hardware punching process, and the punched-out waste is stuck in the lower concave die by utilizing an inclined and reduced knife edge, so that the waste can only fall downwards and will not jump onto the mold, thereby effectively ensuring the service life of the mold and preventing it from being scrapped. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The utility model is further described in detail below based on the drawings and embodiments.

[0012] Figure 1 It is a structural schematic diagram of a mold structure for preventing waste from jumping out of a lower concave mold as described in an embodiment.

[0013] Figure 1 middle:

[0014] 1. Punch; 2. Lower die; 3. Upper hole of the blade; 4. Lower hole of the blade. DETAILED DESCRIPTION

[0015] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0016] like Figure 1 As shown, in this embodiment, a mold structure for preventing waste from jumping out of a lower die comprises a punch 1 and a lower die 2, wherein the punch 1 is located above the lower die 2, and an upper hole 3 and a lower hole 4 are provided in the middle of the lower die 2, wherein the upper radial dimension of the upper hole 3 is greater than the lower radial dimension of the upper hole 3, and the upper radial dimension of the lower hole 4 is smaller than the lower radial dimension of the lower hole 4, and the upper hole 3 is connected to the lower hole 4.

[0017] In the specific structure, the vertical height between the upper end of the knife-edge hole 3 and the lower end of the knife-edge hole 3 is 5mm, the upper end diameter of the knife-edge hole 3 is 0.05mm larger than the lower end diameter of the knife-edge hole 3, the side wall of the knife-edge hole 3 shrinks inward by 0.286° from top to bottom, and the side wall of the knife-edge lower hole 4 expands outward by 1° from top to bottom. If the radial dimension of the upper end of the knife-edge hole 3 is designed to be A, then the radial dimension of the lower end of the knife-edge hole 3 is A-0.05.

[0018] Processing is performed in the original lower concave die 2, dividing the originally straight blade into an upper blade hole 3 and a lower blade hole 4, and the side wall of the upper blade hole 3 is narrowed inward at an angle of 0.286°, and the side wall of the lower blade hole 4 is expanded outward at an angle of 1°. The outer side wall of the entire lower blade hole 4 is expanded to 2° at the same time, so that the position between the upper blade hole 3 and the lower blade hole 4 becomes the narrowest position. When the punch 1 punches the waste downward, the waste passes through the increasingly narrow upper blade hole 3 and enters the lower blade hole 4. After that, it will no longer be able to jump back into the mold, but will continue to fall down along the increasingly wide lower blade hole 4.

[0019] It should be stated that the above-mentioned specific implementation methods are only preferred embodiments of the present utility model and the technical principles used. Within the technical scope disclosed by the present utility model, any changes or substitutions that can be easily thought of by technicians familiar with this technical field should be included in the protection scope of the present utility model.

Claims

1. A mold structure for preventing waste from jumping out of a lower concave mold, characterized in that: It includes a punch and a lower die, the punch is located above the lower die, and an upper hole and a lower hole are provided in the middle of the lower die, the upper radial dimension of the upper hole is larger than the lower radial dimension of the upper hole, the upper radial dimension of the lower hole is smaller than the lower radial dimension of the lower hole, and the upper hole is connected to the lower hole.

2. A mold structure for preventing waste from jumping from a lower die according to claim 1, characterized in that: The vertical height between the upper end of the knife edge upper hole and the lower end of the knife edge upper hole is 5 mm.

3. The mold structure for preventing waste from jumping out of the lower die according to claim 1 is characterized in that: The diameter of the upper end of the hole on the knife edge is 0.05 mm larger than the diameter of the lower end of the hole on the knife edge.

4. The mold structure for preventing waste from jumping out of the lower die according to claim 1 is characterized in that: The side wall of the hole on the knife edge decreases inwardly by 0.286° from top to bottom.

5. The mold structure for preventing waste from jumping out of the lower concave mold according to claim 1 is characterized in that: The side wall of the hole below the knife edge expands outward by 1° from top to bottom.

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