A gap guidewire device

Abstract

The utility model provides a kind of gap wire guide device, including eye mould component, the lower end of eye mould component is connected with guide needle component, the guide needle component includes mounting seat, one end of the mounting seat is connected with eye mould component, and the other end is provided with gap guide needle tube, gap guide needle tube is through with mounting seat and eye mould component inside, the up-and-down movement of eye mould component can drive gap guide needle tube up-and-down movement, to realize the lifting of gap guide needle tube, because the inertia generated is small, so after gap guide needle tube meets workpiece, sliding seat can immediately stop downward movement, therefore gap guide needle tube stops continuing to drop, avoid that gap guide needle tube is bent and damaged by workpiece.

Description

Technical Field

[0001] This utility model relates to the technical field of wire EDM equipment accessories, and more specifically, to a slit wire guide device. Background Technology

[0002] In machining processes, especially in wire electrical discharge machining (EDM), it is often necessary to first establish the wire threading path for the electrode wire, such as molybdenum wire, copper wire, or galvanized wire, before proceeding with the cutting process. Currently, most methods on the market use wire threading guides to guide the electrode wire through the hole. Typically, the electrode wire is led out from the wire EDM head using a wire threading guide and then inserted into the machining hole. The machining hole on the workpiece is usually circular. However, when encountering a slotted hole (a narrow hole with a long length), the electrode wire introduced into the slotted hole will swing left and right along the length of the slotted hole during the threading process, causing the wire threading path to be unstable and greatly reducing the success rate of threading. To avoid this situation, a wire guide tube with a smaller diameter is currently used. This guide tube extends into the slotted hole of the workpiece, and the electrode wire is guided through the slotted hole by the wire guide tube, thus avoiding the above situation.

[0003] Currently, most wire guide tubes are fixed to a guide head on the lower side of the cutting head. The wire guide tube moves up and down with the cutting head. Since the cutting head is mounted on the Z-axis of the cutting machine, the weight of the Z-axis and the cutting head itself are relatively large. When the wire guide tube descends and contacts the workpiece below, if there is no through hole on the workpiece directly below the wire guide tube, or if the hole on the workpiece is not aligned with the wire guide tube, the deviation is large. The wire guide tube will directly collide with the workpiece. The cutting head and Z-axis are heavy and have great inertia. Therefore, after the wire guide tube collides with the workpiece, the cutting head cannot stop descending immediately. This can cause the wire guide tube to bend or even break. Therefore, overcoming the defects of the existing technology is an urgent problem to be solved in this technical field. Utility Model Content

[0004] This invention provides a slot wire guide device, which aims to improve the current situation where the wire guide tube is installed on the machine head and the machine head cannot stop descending immediately after the wire guide tube collides with the workpiece. This can lead to the wire guide tube being bent or even broken.

[0005] To achieve the above objectives, this utility model provides a slit wire guide device, the specific technical solution of which is as follows:

[0006] A slit guide wire device includes an eyepiece assembly. The lower end of the eyepiece assembly is connected to a guide needle assembly. The guide needle assembly includes a mounting base. One end of the mounting base is connected to the eyepiece assembly, and the other end is provided with a slit guide needle tube. The slit guide needle tube communicates with the mounting base and the interior of the eyepiece assembly. The up-and-down movement of the eyepiece assembly can drive the slit guide needle tube to move up and down, thereby realizing the lifting and lowering of the slit guide needle tube.

[0007] In one embodiment, one end of the eye mold assembly is fixedly connected to a sliding seat inside the machine head, and the other end protrudes through a guide head at the lower end of the machine head. Driven by the sliding seat, the eye mold assembly can move up and down inside the machine head.

[0008] In one embodiment, the eye mold assembly includes a threading guide, the upper end of which is fixed to a sliding seat, and the lower end of which is fixedly connected to a mounting seat.

[0009] In one embodiment, the lower end of the threading conduit is provided with an internal thread, and the upper end of the mounting base is provided with an external thread that matches the internal thread. Through the cooperation of the external thread and the internal thread, the upper end of the mounting base is screwed and fixed to the lower end of the threading conduit.

[0010] In one embodiment, the threading conduit and the mounting base are connected by snap-fit ​​or adhesive to achieve a detachable connection.

[0011] In one embodiment, the upper end of the slit guide tube is fixed to the mounting base.

[0012] In one embodiment, the slit guide tube and the mounting base are fixed together by adhesive.

[0013] In one embodiment, the slit guide tube and the mounting base are fixedly connected together by an interference fit.

[0014] In one embodiment, the slit guide tube and the mounting base are fixedly connected by clamping the mounting base with calipers.

[0015] In one embodiment, a guide sleeve and an eyepiece are provided inside the lower end of the threading conduit. The guide sleeve is located on the upper side of the eyepiece, and a through hole is provided in the middle of both the guide sleeve and the eyepiece.

[0016] In one embodiment, the mounting base is disposed on the lower side of the eye mold, and a connecting hole is provided inside the upper end of the mounting base. The connecting hole is coaxially arranged with the through hole between the guide sleeve and the eye mold.

[0017] The beneficial effects of this embodiment are as follows: the slit guide tube is fixed together with the mounting base and the eye mold assembly, thereby driving the slit guide tube to slide up and down, thus realizing the lifting and lowering of the slit guide tube. When the slit guide tube moves downward and hits the workpiece, the sliding seat in the machine head has a small mass and therefore generates little inertia. So when the slit guide tube hits the workpiece, the sliding seat can immediately stop moving downward, thus stopping the slit guide tube from continuing to descend and preventing the slit guide tube from being bent and damaged by the workpiece. Moreover, the slit guide tube is detachably connected to the wire threading guide tube through the mounting base, making the slit guide tube easier and faster to install, greatly improving the efficiency of installation and maintenance. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the existing technology where the slit guide tube is installed in the guide head structure;

[0020] Figure 2 A schematic diagram of the connection structure between the slit guide tube and the sliding seat provided in this embodiment of the utility model;

[0021] Figure 3 Schematic diagram of the positional relationship between the guide head and the slit guide needle tube and the eye mold assembly provided for embodiments of this utility model. Figure 1 ;

[0022] Figure 4 Schematic diagram of the positional relationship between the guide head and the slit guide needle tube and the eye mold assembly provided for embodiments of this utility model. Figure 2 ;

[0023] Figure 5 Exploded views of the wire-threading guide tube, mounting base, and slit needle tube provided for embodiments of this utility model;

[0024] Figure 6 A schematic diagram of the wire-threading guide tube, mounting base, and slit guide needle tube provided for embodiments of this utility model inside the guide head;

[0025] Figure 7 A schematic diagram of the internal structure of the eye mold assembly and guide needle assembly provided for embodiments of this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 100. Eye mold assembly; 110. Threading guide tube; 111. Internal thread; 120. Guide sleeve; 130. Eye mold;

[0028] 200. Sliding seat;

[0029] 300. Guide head;

[0030] 400, guide pin assembly; 410, mounting base; 411, external thread; 412, connecting hole; 420, slot guide pin tube. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0032] The technical solutions provided by the embodiments of this utility model are described below with reference to the accompanying drawings.

[0033] Please see Figure 1-7 This utility model provides a slit wire guide device, including an eyepiece assembly 100. The upper end of the eyepiece assembly 100 is fixedly connected to a sliding seat 200 inside the machine head. The lower end of the eyepiece assembly 100 can pass through a guide head 300 at the lower end of the machine head. Driven by the sliding seat 200, the eyepiece assembly 100 can move up and down inside the machine head. A motor installed inside the machine head drives a synchronous belt to move. The synchronous belt is fixedly connected to the sliding seat. Thus, the motor drives the sliding seat 200 to move up and down inside the machine head through the synchronous belt. The overall mass of the sliding seat 200 is relatively small compared to the machine head and the Z-axis. The inertia generated when the sliding seat 200 moves is also relatively small. The stopping and starting of the sliding seat 200 is relatively easy to control.

[0034] It should be noted that the guide head 300 at the lower end of the machine head of this utility model should be interpreted broadly, including but not limited to the structure shown in the attached drawings of this embodiment. The function of the guide head 300 is to allow the eye mold assembly 100 to pass through from the lower end of the machine head. Regardless of how the guide head 300 is configured, as long as the solution can achieve the same function as this utility model, it should be within the protection scope of this utility model. For example, a guide hole is provided at the lower end of the machine head for the eye mold assembly 100 to pass through to form a guide structure, etc.

[0035] The lower end of the eye mold assembly 100 is connected to a guide needle assembly 400. The guide needle assembly 400 includes a mounting base 410. The upper end of the mounting base 410 is connected to the eye mold assembly 100, and the lower end is provided with a slit guide needle tube 420. The slit guide needle tube 420 has a small diameter and can extend into the slit hole of the workpiece. When it encounters a slit hole, the slit guide needle tube 420 penetrates into the interior of the slit hole. The electrode wire passes through the workpiece through the slit guide needle tube 420. The slit guide needle tube 420 plays a guiding role for the electrode wire, preventing the electrode wire from swinging left and right in the length direction of the slit hole during the wire threading process, which would cause the wire threading path of the electrode wire to be unstable.

[0036] Specifically, the slit guide tube 420 is fixed together with the eye mold assembly 100 via the mounting base 410. The eye mold assembly 100 is fixed together with the sliding seat 200 inside the machine head. The sliding seat 200 slides up and down inside the machine head, thereby driving the slit guide tube 420 to slide up and down, thus realizing the lifting and lowering of the slit guide tube 420. When the slit guide tube 420 moves downward and hits the workpiece, because the sliding seat 200 inside the machine head has a small mass, the inertia generated is small. Therefore, after the slit guide tube 420 hits the workpiece, the sliding seat 200 can immediately stop moving downward. Thus, the slit guide tube 420 stops falling and avoids being bent and damaged by the workpiece.

[0037] Specifically, the eye mold assembly 100 includes a threading guide 110, the upper end of which is fixed to the sliding seat 200, and the lower end of which is fixedly connected to the mounting seat 410. Preferably, an internal thread 111 is provided in the inner cavity of the lower end of the threading guide 110, and an external thread 411 matching the internal thread 111 is provided on the outer side of the upper end of the mounting seat 410. Through the cooperation of the external thread 411 and the internal thread 111, the upper end of the mounting seat 410 is screwed and fixed to the lower end of the threading guide 110, and the mounting seat 410 and the threading guide 110 are detachably connected. Other connection methods can also be used, such as snap-fit, adhesive, etc. In addition, the upper end of the slit guide tube 420 is fixed on the mounting base 410. Preferably, the slit guide tube 420 and the mounting base 410 can be fixed together with glue, or they can be fixed together with an interference fit. Alternatively, the mounting base 410 can be squeezed with calipers to deform the mounting base 410 and achieve a snap-fit ​​connection with the slit guide tube 420. The above structure makes the installation, replacement, repair and maintenance of the slit guide tube 420 and the threading guide tube 110 more convenient and greatly improves work efficiency.

[0038] It should be noted that the slit guide tube 420 is internally connected to the mounting base 410 and the eye mold assembly 100. Specifically, the lower end of the wire threading guide tube 110 is provided with a guide sleeve 120 and an eye mold 130. The guide sleeve 120 is located on the upper side of the eye mold 130. Both the guide sleeve 120 and the eye mold 130 have through holes in the middle. The mounting base 410 is located on the lower side of the eye mold 130. The upper end of the mounting base 410 has a connecting hole 412. The connecting hole 412 is coaxially arranged with the through hole in the middle of the guide sleeve 120 and the eye mold 130. In this way, the electrode wire passes through the through hole and the connecting hole 412, and sequentially passes through the guide sleeve 120, the eye mold 130, the mounting base 410 and the slit guide tube 420, thereby guiding the electrode wire during the wire threading process.

[0039] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0041] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A gap guidewire device, characterized in that, The application relates to an eye mold assembly (100) which is connected with a guide needle assembly (400) at a lower end, the guide needle assembly (400) comprises a mounting seat (410), one end of the mounting seat (410) is connected with the eye mold assembly (100), and the other end is provided with a gap guide needle tube (420), the gap guide needle tube (420) is through the mounting seat (410) and the eye mold assembly (100) internally, and the up-down movement of the eye mold assembly (100) can drive the up-down movement of the gap guide needle tube (420), so that the lifting of the gap guide needle tube (420) is realized.

2. A gap guide wire device according to claim 1, wherein One end of the eye mold assembly (100) is fixedly connected with a sliding seat (200) in a handpiece, and the other end passes out through a guide head (300) at a lower end of the handpiece, and the eye mold assembly (100) can move up and down in the handpiece under the driving of the sliding seat (200).

3. A gap guide wire device according to claim 2, wherein The eye mold assembly (100) comprises a wire passing catheter (110), the upper end of the wire passing catheter (110) is fixed on the sliding seat (200), and the lower end of the wire passing catheter (110) is fixedly connected with the mounting seat (410).

4. A gap guide wire device according to claim 3, wherein The lower end inner cavity of the wire passing catheter (110) is provided with an internal thread (111), the outer side of the upper end of the mounting seat (410) is provided with an external thread (411) matched with the internal thread (111), and the upper end of the mounting seat (410) is screwed and fixed at the lower end of the wire passing catheter (110) through the cooperation of the external thread (411) and the internal thread (111).

5. A gap guide wire device according to claim 3, wherein The wire passing catheter (110) and the mounting seat (410) are connected in a clamping or bonding mode.

6. A gap guide wire device according to claim 1, wherein The upper end of the gap guide needle tube (420) is fixed on the mounting seat (410).

7. A gap guide wire device according to claim 6, wherein The gap guide needle tube (420) and the mounting seat (410) are fixedly connected together through glue.

8. A gap guide wire device according to claim 6, wherein The gap guide needle tube (420) and the mounting seat (410) are fixedly connected together through interference fit.

9. A gap guide wire device according to claim 6, wherein The gap guide needle tube (420) and the mounting seat (410) are fixedly connected through clamping pincers extruding the mounting seat (410).

10. The gap guidewire device of claim 3, wherein, The lower end of the wire passing catheter (110) is internally provided with a guide sleeve (120) and an eye mold (130), the guide sleeve (120) is arranged on the upper side of the eye mold (130), and the guide sleeve (120) and the eye mold (130) are both provided with through holes in the middle.

11. A gap guide wire device according to claim 10, wherein The mounting seat (410) is arranged on the lower side of the eye mold (130), the upper end of the mounting seat (410) is internally provided with a connecting hole (412), and the connecting hole (412) is coaxially arranged with the through holes in the middle of the guide sleeve (120) and the eye mold (130).

Images