Watertight device for spark erosion drilling machine

Abstract

The watertight device comprises a water inlet block, the water inlet block comprises an upper block body and a lower block body, the lower block body and the upper block body are correspondingly provided with copper pipe through holes, the side wall of the lower block body is provided with a water inlet, the water inlet is communicated with the copper pipe through hole in the lower block body, and the water inlet is communicated with the copper pipe through hole in the lower block body. An open groove is formed in the upper block body, a soft sealing block is arranged in the open groove, the soft sealing block is of a cylindrical structure, one end of the cylindrical structure is closed, a through hole is formed in the cylindrical structure, the cylindrical structure is of a hollow structure, a protruding block is arranged in the center of the cylindrical structure, the through hole penetrates through the protruding block, and after water is injected, water enters the position between the protruding block and the inner wall of the cylindrical structure. According to the watertight device of the device, the soft sealing block is arranged, the soft sealing block can be extruded when water enters the water sealing device, so that the watertightness between the copper pipe and the metal block is achieved, and it is guaranteed that when water is injected into the copper pipe, the water leakage phenomenon of the copper pipe cannot occur when the copper pipe passes through the water inlet pipe.

Description

Technical Field

[0001] The utility model relates to the field of electric spark punching equipment, in particular to a watertight device for an electric spark punching machine. Background Art

[0002] Unlike wire-cut EDM machines and forming machines, an EDM puncher uses a hollow copper tube as the electrode for the electric pulse. High-pressure water flows through a small hole in the center of the tube, providing cooling and chip removal. The discharge between the electrode and the metal generates high-temperature corrosion, achieving the desired hole. EDM punchers are used to create fine holes in ultra-hard steel, cemented carbide, copper, aluminum, and any other conductive material. They can produce holes as small as 0.015mm, even tapered ones. They are widely used in precision mold manufacturing. However, the copper tube is constantly consumed during the process, and when the length no longer meets the machining requirements, it must be replaced.

[0003] The rotary clamping device and automatic copper tube changing device for an EDM perforator disclosed in the prior application CN 116967547 A disclose the main structure of the EDM machine. However, there are still some minor problems in actual use: 1. The watertight device adopts the form of a practical ball valve, which is costly and has a general watertight effect. Utility Model Content

[0004] In order to solve the above technical problems, the utility model proposes a watertight device for an electric spark perforator, comprising a water inlet block, the water inlet block comprising an upper block and a lower block, the lower block and the upper block are respectively provided with copper pipe passage holes, the side wall of the lower block is provided with a water inlet, the water inlet is communicated with the copper pipe passage hole on the lower block,

[0005] A compression block is provided on the upper block, a groove is provided on the upper block, a soft sealing block is provided in the groove, the soft sealing block is a cylindrical structure, one end of the cylindrical structure is closed and a through hole is provided, the cylindrical structure is a hollow structure, and a protruding block is provided in the center, the through hole passes through the protruding block, and after water is injected, water enters between the protruding block and the inner wall of the cylindrical structure and squeezes the protruding block and the cylindrical structure.

[0006] Preferably, two groups of parallel slots are provided on the upper blocks on both sides of the pressing block, and the pressing block is clamped in the slots.

[0007] Preferably, the side walls of the pressing block and the side walls of the upper block are provided with connecting plates, and the connecting plates are respectively locked and connected to the upper block and the pressing block by screws.

[0008] Preferably, the raised block is a truncated cone structure.

[0009] Preferably, the through hole is provided with a tapered opening on the end surface of the columnar structure.

[0010] The watertight device of the electric spark punching machine proposed by the utility model has the following beneficial effects: the watertight device of the device is equipped with a soft sealing block with a special structure, which can squeeze the soft sealing block when water enters to achieve watertightness between the copper pipe and the metal block, ensuring that when water is injected into the copper pipe, the copper pipe will not leak when passing between the water inlet pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments.

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0013] Figure 2 This is an exploded view of the watertight device of the present invention;

[0014] Figure 3 This is a schematic diagram of the soft sealing block of the present invention;

[0015] Figure 4 This is a schematic diagram of the soft sealing block of the present invention;

[0016] Figure 5 It is a cross-sectional view of the utility model;

[0017] Among them, 1. upper block; 2. lower block; 3. copper pipe through hole; 4. water inlet; 5. clamping block; 6. slot; 7. soft sealing block; 8. through hole; 9. raised block; 10. columnar structure; 11. slot; 12. connecting plate; 13. screw; 14. tapered mouth. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0019] like Figure 1 、 Figure 2As shown, the utility model proposes a watertight device for an electric spark perforator, including a water inlet block, the water inlet block including an upper block 1 and a lower block 2, the lower block 2 and the upper block 1 are correspondingly provided with a copper tube through hole 3, the side wall of the lower block 2 is provided with a water inlet 4, the water inlet 4 is connected with the copper tube through hole 3 on the lower block 2, the function of the water inlet block is to pass high-pressure water into the water inlet 4 and into the copper tube through hole, the end of the copper tube is in the copper tube through hole, water is injected into the copper tube by high-pressure water, and the copper tube also needs to move in the water inlet block, so the watertightness between the copper tube and the water inlet block must be ensured. Specifically: the upper block 1 is provided with a water inlet 4, the water inlet 4 is connected with the copper tube through hole 3 on the lower block 2, and the water inlet block is provided with a water inlet 4. There is a compression block 5, and a groove 6 is provided on the upper block 1 at the lower part of the compression block 5. A soft sealing block 7 is provided in the groove 6. The soft sealing block 7 can be made of rubber. In this embodiment, the groove 6 is set to a cylindrical shape to adapt to the shape of the soft sealing block 7. The soft sealing block 7 is a cylindrical structure 10. Of course, the external structure of the soft sealing block 7 is not limited. It can also be a polygon, as long as the soft sealing block 7 is in the same shape as the groove 6 and fits the inner wall of the groove 6. One end of the cylindrical structure 10 is closed and provided with a through hole 8. The through hole 8 is provided with a tapered mouth 14 on the end face of the cylindrical structure 10, which is more convenient for the copper tube to align and pass through;

[0020] like Figure 3 、 Figure 4 、 Figure 5 As shown, the cylindrical structure 10 is a hollow structure with a raised block 9 at the center. The raised block 9 is a truncated cone structure. The through hole 8 passes through the truncated cone structure for the copper tube to pass through. The end of the copper tube is at the lower plate. After water is injected, the water enters the copper tube, and some water enters from the lower plate between the raised block 9 and the inner wall of the cylindrical structure 10, and squeezes the raised block 9 and the cylindrical structure 10. When the raised block 9 is squeezed from all sides, the copper tube passing inside can be tightened. At the same time, when the cylindrical structure 10 is squeezed, the pressure between the cylindrical structure 10 and the inner wall of the slot 6 can be increased to improve water tightness.

[0021] In order to ensure the pressure between the clamping block 5 and the upper plate body, two groups of parallel slots 11 are provided on the upper block body 1 on both sides of the clamping block 5. The clamping block 5 is clamped in the slots 11, and the side walls of the clamping block 5 and the side walls of the upper block body 1 are provided with connecting plates 12. The connecting plates 12 are respectively locked and connected with the upper block body 1 and the clamping block 5 by screws 13. The clamping block 5 is clamped in the slots 11, which can effectively press the soft sealing block 7 onto the upper block body 1.

Claims

1. A watertight device for an electric spark punching machine, comprising a water inlet block, wherein the water inlet block comprises an upper block (1) and a lower block (2), wherein copper tube passage holes (3) are correspondingly provided on the lower block (2) and the upper block (1), and a water inlet (4) is provided on the side wall of the lower block (2), wherein the water inlet (4) is communicated with the copper tube passage hole (3) on the lower block (2), and ... The upper block (1) is provided with a pressing block (5), the upper block (1) is provided with a slot (6), a soft sealing block (7) is provided in the slot (6), the soft sealing block (7) is a columnar structure (10), one end of the columnar structure (10) is closed and a through hole (8) is provided, the columnar structure (10) is a hollow structure, and a protruding block (9) is provided in the center, the through hole (8) passes through the protruding block (9), after water is injected, water enters between the protruding block (9) and the inner wall of the columnar structure (10), and squeezes the protruding block (9) and the columnar structure (10).

2. The watertight device of the electric spark punch according to claim 1 is characterized in that: Two groups of parallel slots (11) are provided on the upper blocks (1) on both sides of the pressing block (5), and the pressing block (5) is clamped in the slots (11).

3. The watertight device of the electric spark punch according to claim 2 is characterized in that: The side walls of the pressing block (5) and the side walls of the upper block (1) are provided with connecting plates (12), and the connecting plates (12) are respectively locked and connected with the upper block (1) and the pressing block (5) via screws (13).

4. The watertight device of the electric spark punch according to claim 1 is characterized in that: The protruding block (9) is a truncated cone-shaped structure.

5. The watertight device of the electric spark punch according to claim 1 is characterized in that: The through hole (8) is provided with a tapered opening (14) on the end surface of the columnar structure (10).

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