Anti-splashing liquid cooling threading mechanism

Abstract

The utility model discloses an anti-splashing liquid cooling wire threading mechanism, which comprises an upper wire threading mechanism and a lower wire threading mechanism which are used for butting wire threading, and a drainage piece is arranged above a lower wire threading hole; the electrode wire reciprocates between the upper wire penetrating mechanism and the lower wire penetrating mechanism to cut a workpiece, cooling liquid on the upper portion is sprayed out downwards from the upper wire penetrating mechanism along the electrode wire to form an upper water column, cooling liquid on the lower portion is sprayed out upwards from the lower wire penetrating mechanism along the electrode wire to form a lower water column, and when the electrode wire moves from the upper wire penetrating mechanism to the lower wire penetrating mechanism, the upper water column and the lower water column are separated. The upper water column and the lower water column intersect at the drainage piece and discharge cooling liquid in the preset direction. By arranging the drainage piece, the upper water column and the lower water column intersect at the drainage piece, cooling liquid is discharged in the preset direction, the drainage piece plays a role in drainage and guide on the cooling liquid, the cooling liquid is prevented from splashing everywhere, and the working environment is kept clean and tidy.

Description

Technical Field

[0001] The utility model relates to the technical field of wire cutting equipment, in particular to a splash-proof liquid-cooled wire threading mechanism. Background Art

[0002] CNC wire cutting is a branch of EDM, which uses electrode wire (molybdenum wire, copper wire, galvanized wire) to cut the workpiece by spark discharge. In CNC wire cutting, the relative movement of the workpiece and the wire electrode is controlled by digital information. It is often used to process high-hardness materials, fine structures, complex shapes, high-precision dimensional parts, and high-surface quality parts.

[0003] CNC wire cutting machines are usually divided into three categories: fast wire cutting machines, medium wire cutting machines and slow wire cutting machines; taking fast wire cutting machines as an example, the wire electrode makes high-speed reciprocating motion, and the wire speed is 8m / s~10m / s. Its working principle is: the wire electrode passes through the pre-drilled small hole on the workpiece, and moves back and forth alternately through the guide wheel driven by the wire drum. The workpiece is installed on the conductive workbench through the insulating plate. The conductive workbench moves in the horizontal plane X and Y coordinate directions according to the given control program to synthesize any plane curve trajectory. The pulse power supply applies a pulse voltage to the wire electrode and the workpiece, the wire electrode is connected to the negative pole of the pulse power supply, and the workpiece is connected to the positive pole of the pulse power supply. When an electric pulse comes, a spark discharge is generated between the wire electrode and the workpiece. The temperature in the center of the discharge channel can instantly reach more than 10,000°C. The high temperature melts the metal of the workpiece, and even a small amount of it is vaporized. The high temperature also vaporizes part of the working fluid between the wire electrode and the workpiece. The vaporized working fluid and metal vapor instantly expand rapidly and have the characteristics of explosion. This thermal expansion and local micro-explosion will throw out the melted and vaporized metal materials to achieve electro-erosion cutting of the workpiece material.

[0004] A large amount of heat is generated during the wire cutting process, which needs to be cooled by coolant. Usually, coolant is sprayed on the top and bottom of the workpiece to one side of the workpiece. The coolant will form a water column along the electrode wire, and the two opposite water columns will splash at the intersection. Especially when the electrode wire moves from top to bottom, the intersection of the water columns will move downward, and the coolant will splash upward and outward, affecting the working environment around the machine tool. Utility Model Content

[0005] The main purpose of the utility model is to provide a splash-proof liquid-cooled wire threading mechanism, which can prevent splashing of cooling liquid and keep the working environment clean and tidy.

[0006] To achieve the above-mentioned purpose, the utility model proposes a splash-proof liquid-cooled wire threading mechanism, comprising an upper wire threading mechanism and a lower wire threading mechanism for butt wire threading, a drainage piece is provided above the lower wire threading mechanism; the electrode wire reciprocates between the upper wire threading mechanism and the lower wire threading mechanism to cut the workpiece, the upper coolant is sprayed downward from the upper wire threading mechanism along the electrode wire to form an upper water column, and the lower coolant is sprayed upward from the lower wire threading mechanism along the electrode wire to form a lower water column. When the electrode wire moves from the upper wire threading mechanism to the lower wire threading mechanism, the upper water column and the lower water column meet at the drainage piece and the coolant is discharged through the drainage hole.

[0007] Furthermore, a drainage cavity is recessed at the top of the guide member, a first through hole is provided at the bottom of the drainage cavity, a drainage hole connected to the drainage cavity is provided at the side wall of the guide member, a cover is provided at the top of the drainage cavity, a second through hole is provided in the middle of the cover member and is located on the same vertical line as the first through hole, a diameter of the second through hole is smaller than an inner diameter of the drainage cavity, the upper water column and the lower water column meet at the drainage cavity and discharge the coolant through the drainage hole.

[0008] Furthermore, the second through hole is in a funnel shape with a large diameter at the upper portion and a small diameter at the lower portion, and a funnel-shaped guide groove is provided at the upper end of the first through hole.

[0009] Furthermore, the upper wire threading mechanism is provided with an upper wire threading hole and an upper water inlet hole, the upper water inlet hole is connected with the upper wire threading hole, the lower wire threading mechanism is provided with a lower wire threading hole and a lower water inlet hole, the lower water inlet hole is connected with the lower wire threading hole, the upper wire threading hole and the lower wire threading hole are on the same vertical line, the upper coolant enters the upper wire threading mechanism through the upper water inlet hole and sprays downward from the upper wire threading hole to form the upper water column, and the lower coolant enters the lower wire threading mechanism through the lower water inlet hole and sprays upward from the lower wire threading hole to form the lower water column.

[0010] Furthermore, a telescopic docking mechanism is provided between the lower wire threading mechanism and the upper wire threading mechanism, the lower end of the telescopic docking mechanism is connected to the lower wire threading mechanism, the upper end of the telescopic docking mechanism is telescoped toward one side of the upper wire threading mechanism, and the drainage piece is provided at the upper end of the telescopic docking mechanism.

[0011] Furthermore, the telescopic docking mechanism includes a telescopic tube group and a driving device for driving the telescopic tube group to be telescopic, the lower end of the telescopic tube group is docked with the lower threading hole, and the upper end of the telescopic tube group is docked with the drainage piece.

[0012] Furthermore, the telescopic docking mechanism includes a mounting seat and a connecting seat, the lower end of the telescopic tube group is fixed above the lower threading hole through the mounting seat, the upper end of the telescopic tube group is connected to the bottom of the connecting seat, the drainage piece is arranged on the top of the connecting seat, and the driving device can drive the connecting seat to rise and fall to make the telescopic tube group telescopic.

[0013] Furthermore, the telescopic docking mechanism includes a limit adjustment component, and the limit adjustment component can limit the range of movement of the output end of the driving device to adjust the lifting height of the connecting seat.

[0014] Furthermore, the limit adjustment assembly includes an adjustment rod and a limit member, the adjustment rod is parallel to the telescopic tube group, the lower wire threading mechanism is provided with a third through hole corresponding to the adjustment rod, the upper end of the adjustment rod is fixedly connected to the connecting seat, the lower end of the adjustment rod extends downward to pass through the third through hole and then connects to the limit member, and the limit member is adjustable at the height position of the adjustment rod.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] By setting the guide piece, the upper water column and the lower water column meet at the guide piece and discharge the coolant in a preset direction. The guide piece is used to guide the coolant, avoiding the coolant from splashing everywhere and keeping the working environment clean and tidy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the drainage member in the embodiment of the utility model;

[0020] Description of the accompanying drawings: 100-electrode wire; 1-upper wire threading mechanism; 2-lower wire threading mechanism; 3-upper wire threading hole; 4-upper water inlet hole; 5-lower wire threading hole; 6-lower water inlet hole; 7-drainage member; 8-drainage chamber; 9-first through hole; 10-drainage hole; 11-cover member; 12-second through hole; 13-guide groove; 14-mounting seat; 15-connecting seat; 16-telescopic tube group; 17-driving device; 18-adjusting rod; 19-limiting member. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0023] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0024] Example: Refer to Figure 1 , Figure 2The utility model proposes an anti-splash liquid-cooled wire threading mechanism, comprising an upper wire threading mechanism 1 and a lower wire threading mechanism 2 for butt threading, the upper wire threading mechanism 1 is provided with an upper wire threading hole 3 and an upper water inlet hole 4, the upper water inlet hole 4 is connected with the upper wire threading hole 3, the lower wire threading mechanism 2 is provided with a lower wire threading hole 5 and a lower water inlet hole 6, the lower water inlet hole 6 is connected with the lower wire threading hole 5, the upper wire threading hole 3 and the lower wire threading hole 5 are on the same vertical line, the upper coolant enters the upper wire threading mechanism 1 through the upper water inlet hole 4 and sprays downward from the upper wire threading hole 3 to form an upper water column (not shown in the figure), the lower coolant enters the lower wire threading mechanism 2 through the lower water inlet hole 6 and sprays upward from the lower wire threading hole 5 to form a lower water column (not shown in the figure). A drainage member 7 is provided above the lower threading hole 5, a drainage cavity 8 is provided in the top of the drainage member 7, a first through hole 9 is provided at the bottom of the drainage cavity 8, a drainage hole 10 connected to the drainage cavity 8 is provided on the side wall of the drainage member 7, a cover member 11 is provided on the top of the drainage cavity 8, a second through hole 12 which is on the same vertical line as the first through hole 9 is provided in the middle of the cover member 11, the diameter of the second through hole 12 is smaller than the inner diameter of the drainage cavity 8, and the second through hole 12 is in the shape of a funnel with a large diameter at the upper section and a small diameter at the lower end, and a funnel-shaped The guide groove 13 of the upper threading mechanism 1 and the lower threading mechanism 2 both play a guiding role to facilitate wire threading; the electrode wire 100 reciprocates between the upper threading mechanism 1 and the lower threading mechanism 2 to cut the workpiece, and the upper coolant is sprayed downward from the upper threading mechanism 1 along the electrode wire 100 to form an upper water column, and the lower coolant is sprayed upward from the lower threading mechanism 2 along the electrode wire 100 to form a lower water column. When the electrode wire 100 moves from the upper threading mechanism 1 to the lower threading mechanism 2, the upper water column and the lower water column meet at the drainage cavity 8 and the coolant is discharged through the drainage hole 10. By setting the drainage member 7, the upper water column and the lower water column meet at the drainage member 7 and the coolant is discharged through the drainage hole 10. The drainage hole 10 is used to guide the coolant, which avoids the coolant from splashing everywhere and keeps the working environment clean and tidy.

[0025] Specifically, a telescopic docking mechanism is provided between the lower threading mechanism 2 and the upper threading mechanism 1, the lower end of the telescopic docking mechanism is connected to the lower threading mechanism 2, the upper end of the telescopic docking mechanism is telescopic to one side of the upper threading mechanism 1, and the flow guide 7 is provided at the upper end of the telescopic docking mechanism. The telescopic docking mechanism includes a mounting seat 14, a connecting seat 15, a telescopic tube group 16 and a driving device 17 for driving the telescopic tube group 16 to telescope, the telescopic tube group 16 is formed by a plurality of threading pipes, the lower end of the telescopic tube group 16 is fixedly provided above the lower threading hole 5 through the mounting seat 14, the upper end of the telescopic tube group 16 is connected to the bottom of the connecting seat 15, the flow guide 7 is provided at the top of the connecting seat 15, and the driving device 17 can drive the connecting seat 15 to rise and fall so that the telescopic tube group 16 can telescope.

[0026] More specifically, the telescopic docking mechanism includes a limit adjustment component, which can limit the range of motion of the output end of the driving device to adjust the lifting height of the connecting seat 15. The limit adjustment component includes an adjustment rod 18 and a limit member 19, the adjustment rod 18 is parallel to the telescopic tube group 16, the lower threading mechanism 2 is provided with a third through hole corresponding to the adjustment rod 18, the upper end of the adjustment rod 18 is fixedly connected to the connecting seat 15, the lower end of the adjustment rod 18 extends downward to pass through the third through hole and then connects to the limit member 19, and the limit member 19 is adjustable at the height position of the adjustment rod 18.

[0027] The working principle of this embodiment is as follows:

[0028] During wire cutting, the workpiece is placed on the workstation between the upper threading mechanism 1 and the lower threading mechanism 2, and the electrode wire 100 moves back and forth between the upper threading mechanism 1 and the lower threading mechanism 2 to cut the workpiece. At the same time, the upper coolant enters the upper threading mechanism 1 from the upper water inlet hole 4, and sprays out from the upper threading hole 3, forming an upper water column along the electrode wire 100, and the lower coolant enters the threading mechanism from the lower water inlet hole 6, and sprays upward from the lower threading hole 5, passes through the telescopic tube group 16 and the drainage member 7 in sequence, and then forms a lower water column upward along the electrode wire 100. When the electrode wire 100 moves from bottom to top, it strengthens the lower water column. At this time, the lower water column and the upper water column meet at the lower end surface of the workpiece, and the coolant is sprayed obliquely downward without splashing outward; when the electrode wire 100 moves from top to bottom, it strengthens the upper water column. At this time, the lower water column and the upper water column meet in the drainage cavity 8 of the drainage member 7, and the coolant is discharged from the drainage hole 10, which plays a role in draining and guiding the coolant to avoid splashing everywhere.

[0029] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A splash-proof liquid-cooled wire threading mechanism, characterized in that: It comprises an upper threading mechanism and a lower threading mechanism for threading the butt joint, and a drainage member is provided above the lower threading mechanism; The electrode wire reciprocates between the upper wire threading mechanism and the lower wire threading mechanism to cut the workpiece, the upper coolant is sprayed downward from the upper wire threading mechanism along the electrode wire to form an upper water column, and the lower coolant is sprayed upward from the lower wire threading mechanism along the electrode wire to form a lower water column. When the electrode wire moves from the upper wire threading mechanism to the lower wire threading mechanism, the upper water column and the lower water column meet at the drainage member and discharge the coolant in a preset direction.

2. A splash-proof liquid-cooled wire threading mechanism according to claim 1, characterized in that: A drainage cavity is recessed at the top of the flow guide member, a first through hole is provided at the bottom of the drainage cavity, a drainage hole connected to the drainage cavity is provided on the side wall of the flow guide member, a cover is provided at the top of the drainage cavity, a second through hole is provided in the middle of the cover member and is located on the same vertical line as the first through hole, the diameter of the second through hole is smaller than the inner diameter of the drainage cavity, the upper water column and the lower water column meet at the drainage cavity and discharge the coolant through the drainage hole.

3. A splash-proof liquid-cooled wire threading mechanism according to claim 2, characterized in that: The second through hole is in a funnel shape with a large diameter at the upper end and a small diameter at the lower end, and a funnel-shaped guide groove is provided at the upper end of the first through hole.

4. The splash-proof liquid-cooled wire threading mechanism according to claim 1, characterized in that: The upper wire threading mechanism is provided with an upper wire threading hole and an upper water inlet hole, and the upper water inlet hole is connected with the upper wire threading hole. The lower wire threading mechanism is provided with a lower wire threading hole and a lower water inlet hole, and the lower water inlet hole is connected with the lower wire threading hole. The upper wire threading hole and the lower wire threading hole are on the same vertical line. The upper coolant enters the upper wire threading mechanism through the upper water inlet hole and sprays downward from the upper wire threading hole to form the upper water column, and the lower coolant enters the lower wire threading mechanism through the lower water inlet hole and sprays upward from the lower wire threading hole to form the lower water column.

5. A splash-proof liquid-cooled wire threading mechanism according to claim 4, characterized in that: A telescopic docking mechanism is provided between the lower threading mechanism and the upper threading mechanism, the lower end of the telescopic docking mechanism is connected to the lower threading mechanism, the upper end of the telescopic docking mechanism is telescoped toward one side of the upper threading mechanism, and the drainage piece is provided at the upper end of the telescopic docking mechanism.

6. A splash-proof liquid-cooled wire threading mechanism according to claim 5, characterized in that: The telescopic docking mechanism includes a telescopic tube group and a driving device for driving the telescopic tube group to telescope. The lower end of the telescopic tube group is docked with the lower threading hole, and the upper end of the telescopic tube group is docked with the drainage piece.

7. A splash-proof liquid-cooled wire threading mechanism according to claim 6, characterized in that: The telescopic docking mechanism includes a mounting seat and a connecting seat. The lower end of the telescopic tube group is fixedly arranged above the lower threading hole through the mounting seat, the upper end of the telescopic tube group is connected to the bottom of the connecting seat, the guide piece is arranged on the top of the connecting seat, and the driving device can drive the connecting seat to rise and fall to make the telescopic tube group telescopic.

8. A splash-proof liquid-cooled wire threading mechanism according to claim 7, characterized in that: The telescopic docking mechanism includes a limit adjustment component, which can limit the range of movement of the output end of the driving device to adjust the lifting height of the connecting seat.

9. A splash-proof liquid-cooled wire threading mechanism according to claim 8, characterized in that: The limit adjustment assembly includes an adjustment rod and a limit member, the adjustment rod is parallel to the telescopic tube group, the lower wire threading mechanism is provided with a third through hole corresponding to the adjustment rod, the upper end of the adjustment rod is fixedly connected to the connecting seat, the lower end of the adjustment rod extends downward to pass through the third through hole and then connects to the limit member, and the limit member is adjustable in height position of the adjustment rod.

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