Wire threading detection positioning mechanism
By using an inner cone hole instead of the conductive sheet in the threading detection and positioning mechanism, combined with the cleaning function of the tee piece, the problems of electrode wire damage and waste wire are solved, and more efficient threading detection and lower usage cost are achieved. .
Patent Information
- Application Number
- CN202420516738.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-18
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-03-18
AI Technical Summary
When the existing wire-through detection and positioning mechanism detects whether the wire-through is in place, the wire head of the electrode wire will push the conductive sheet, causing damage to the end of the electrode wire, affecting the use effect and increasing the generation of waste wire.
An inner cone hole is used instead of the conductive sheet, and an electrical signal is generated by detecting the contact between the conduit and the electrode wire, controlling the operation of the wire feeding mechanism, reducing the blockage and damage of the electrode wire head, and cleaning high-pressure air or cleaning liquid is achieved through the tee.
It reduces damage to the electrode wire head, reduces waste wire generation, reduces usage cost, and improves the accuracy and practicality of wire penetration detection.
Smart Images
Figure CN222242999U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wire cutting equipment, in particular to a wire threading detection and positioning mechanism. Background Art
[0002] CNC wire cutting is a branch of EDM, which uses wire-shaped electrode wire to cut the workpiece by spark discharge. In CNC wire cutting, the relative movement of the workpiece and the electrode wire 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] In order to detect the distance from the wire head of the electrode wire to the wire clamping position of the wire barrel and improve the accuracy of automatic wire threading, an automatic wire threading detection and positioning mechanism is proposed in the prior art. For example, the Chinese utility model patent with the publication number CN220330174U proposes an automatic wire threading detection and positioning mechanism, which uses the detection sensing unit to detect the end position of the wire electrode, and then feedbacks and controls the clamping mechanism to accurately and quantitatively clamp the wire electrode, and then controls the tube group wire threading mechanism to act on the wire storage mechanism to realize the fully automatic wire connection operation of the wire electrode; the detection sensing unit includes a conductive sheet, and the end of the electrode wire will touch the conductive sheet when passing through the tip of the receiving tube, and the electrode wire and the machine tool body are electrically connected through the conductive sheet, triggering a signal, indicating that the end of the electrode wire has been threaded to the preset position, at this time, the distance between the end of the electrode wire and the elastic clamp on the wire storage barrel is close and known, and then the electrode wire can be accurately and quantitatively clamped, the receiving tube and the wire storage barrel are docked, and the electrode wire connection operation is completed.
[0004] However, when the detection mechanism detects whether the electrode wire is properly threaded, the wire head of the electrode wire will push the conductive sheet, and the blocking effect of the conductive sheet will cause damage to the end of the electrode wire, affecting the use effect of the electrode wire. Utility Model Content
[0005] In order to solve the above technical problems, the utility model provides a wire threading detection and positioning mechanism which adopts an inner tapered hole to replace the conductive sheet in the prior art, which causes little damage to the electrode wire head and does not affect the use effect of the electrode wire, is conducive to reducing the generation of waste wire and lowering the use cost, and has good practicality.
[0006] The utility model provides a wire threading detection and positioning mechanism, comprising a front wire guide tube and a rear wire guide tube, the input port of the front wire guide tube is connected to the wire feeding mechanism, the internal channel of the front wire guide tube is used to guide the electrode wire, the output port of the rear wire guide tube is aligned with the wire clamping mechanism of the wire cutting machine, and the output port of the front wire guide tube is aligned with the input port of the rear wire guide tube; the utility model is characterized in that it also comprises a detection catheter, an inner tapered hole and a detection catheter channel, the detection catheter is located between the output port of the front wire guide tube and the input port of the rear wire guide tube, the detection catheter is insulated from the front wire guide tube, the detection catheter is connected to the controller, the detection catheter is axially provided with a through detection catheter channel, one end of the detection catheter channel is aligned with the output port of the front wire guide tube, the other end of the detection catheter channel is aligned with the input port of the rear wire guide tube, the end of the detection catheter facing one end of the front wire guide tube is provided with an inner tapered hole, the end of the inner tapered hole facing the front wire guide tube is wide, and the other end of the inner tapered hole is aligned with the detection catheter channel Connected; when working, the wire feeding mechanism of the wire cutting machine feeds the electrode wire along the front wire guide tube. When the wire head of the electrode wire extends from the output port of the front wire guide tube, it is guided by the inner tapered hole into the detection guide tube channel. The detection guide tube channel guides the electrode wire, so that the electrode wire enters the rear wire guide tube through the detection guide tube, and then the electrode wire is fed into the wire clamping mechanism of the wire cutting machine. When the electrode wire contacts the inner wall of the inner tapered hole, since the detection guide tube carries the positive electrode and the electrode wire carries the negative electrode, the detection guide tube generates an electrical signal and transmits the electrical signal to the controller. The controller determines that the electrode wire head is in place, and controls the wire feeding mechanism to feed the electrode wire according to the set program. Since the inner tapered hole with a guiding function is used instead of the conductive sheet in the prior art, the blocking effect on the electrode wire head is reduced, the damage to the electrode wire is reduced, and the use effect of the electrode wire is not affected, which is beneficial to reducing the generation of waste wire and reducing the use cost. It has a simple structure and good practicality.
[0007] Preferably, it also includes a tee, wherein one end of the detection duct facing the front wire guide tube is installed in the first channel of the tee, the output end of the front wire guide tube is installed in the second channel of the tee, the detection duct and the front wire guide tube are aligned, and a gap is set between the detection duct and the front wire guide tube, and the gap is connected to the third channel of the tee; the tee supports and fixes the detection duct, the front wire guide tube and the rear wire guide tube, and at the same time, the third channel of the tee is connected to the high-pressure air pipe, or to the cleaning liquid pipe, and when it is necessary to clean the detection duct channel, the interior of the front wire guide tube and the interior of the rear wire guide tube, high-pressure air or cleaning liquid is input, so that the high-pressure air or cleaning liquid enters the detection duct channel and the front wire guide tube through the gap between the detection duct and the front wire guide tube, thereby air washing or cleaning the detection duct channel, the front wire guide tube and the rear wire guide tube, which has good practicality.
[0008] Preferably, an inner wall of the third channel of the tee piece is provided with an internal thread, and the inlet of the third channel of the tee piece is used to connect to the air intake channel; the above arrangement facilitates the threaded connection of an external high-pressure air pipe or a cleaning liquid pipe.
[0009] Preferably, the detection catheter is connected to the input end of the rear wire guide tube, and an external thread is provided on the outer wall of one end of the detection catheter facing the rear wire guide tube, and the external thread is located outside the connection part between the detection catheter and the rear wire guide tube, and the external thread is located outside the tee piece; by providing the external thread at the end of the detection catheter, it is convenient to use a wiring sleeve with an electric wire to threadably connect with the detection catheter, and it is also convenient to use the electric wire to directly wrap around and tighten the thread, and the electric wire is connected to the controller, making the connection more convenient and firm.
[0010] Preferably, the detection catheter is aligned and plugged with the input end of the rear guide wire tube.
[0011] Preferably, the detection catheter channel is designed with a variable diameter, and the diameter of the end of the detection catheter channel close to the inner tapered hole is smaller than the diameter of the end away from the inner tapered hole; the end of the detection catheter channel with a smaller diameter has a better precise contact effect on the electrode wire head, and at the same time increases the contact area between the electrode wire and the detection catheter, which is conducive to timely generating electrical signals, avoiding missed judgments, and improving practicality.
[0012] Preferably, it also includes a leading wire inlet tube, the output port of the leading wire inlet tube is sleeved on the input end of the leading wire tube, the internal channel of the leading wire inlet tube is aligned with the internal channel of the leading wire tube, and the input port of the leading wire inlet tube is set as an inner tapered wide mouth; the inner tapered wide mouth of the leading wire inlet tube has a guiding effect on the electrode wire sent by the wire feeding mechanism, so that the electrode wire can enter the leading wire tube more easily.
[0013] Compared with the prior art, the utility model has the following beneficial effects: when working, the wire feeding mechanism of the wire cutting machine feeds the electrode wire along the front wire guide tube, and when the wire head of the electrode wire extends from the output port of the front wire guide tube, it is guided by the inner tapered hole into the detection guide tube channel, and the detection guide tube channel guides the electrode wire, so that the electrode wire enters the rear wire guide tube through the detection guide tube, and then the electrode wire is fed into the wire clamping mechanism of the wire cutting machine. When the electrode wire contacts the inner wall of the inner tapered hole, since the detection guide tube carries the positive electrode and the electrode wire carries the negative electrode, the detection guide tube generates an electrical signal and transmits the electrical signal to the controller. The controller determines that the electrode wire head is in place, and controls the wire feeding mechanism to feed the electrode wire according to the set program. Since the inner tapered hole with a guiding function is used instead of the conductive sheet in the prior art, the blocking effect on the electrode wire head is reduced, the damage to the electrode wire is reduced, and the use effect of the electrode wire is not affected, which is beneficial to reducing the generation of waste wire and reducing the use cost. It has a simple structure and good practicality. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the side section structure of the utility model;
[0015] Figure 2 It is a side view structural schematic diagram of the utility model;
[0016] Figure 3It is a schematic diagram of the top view structure of the utility model;
[0017] Figure 4 yes Figure 1 Schematic diagram of the local enlarged structure at point A in the middle.
[0018] Markings in the attached drawings: 1. detection catheter; 2. inner tapered hole; 3. detection catheter channel; 4. external thread; 5. internal thread; 6. tee piece; 7. front wire guide tube; 8. front wire guide inlet tube; 9. rear wire guide tube. DETAILED DESCRIPTION
[0019] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.
[0020] Example 1
[0021] like Figures 1 to 4 As shown, the wire threading detection and positioning mechanism includes a front wire guide tube 7 and a rear wire guide tube 9, the input port of the front wire guide tube 7 is connected to the wire feeding mechanism, the internal channel of the front wire guide tube 7 is used to guide the electrode wire, the output port of the rear wire guide tube 9 is aligned with the wire clamping mechanism of the wire cutting machine, and the output port of the front wire guide tube 7 is aligned with the input port of the rear wire guide tube 9; it also includes a detection catheter 1, an inner tapered hole 2 and a detection catheter channel 3, the detection catheter 1 is located between the output port of the front wire guide tube 7 and the input port of the rear wire guide tube 9, the detection catheter 1 and the front wire guide tube 7 are insulated, the detection catheter 1 is connected to the controller, the detection catheter 1 is axially provided with a through detection catheter channel 3, one end of the detection catheter channel 3 is aligned with the output port of the front wire guide tube 7, and the other end of the detection catheter channel 3 is aligned with the input port of the rear wire guide tube 9. , an inner tapered hole 2 is arranged at the end of one end of the detection catheter 1 facing the front wire guide tube 7, the end of the inner tapered hole 2 facing the front wire guide tube 7 is a wide mouth, and the other end of the inner tapered hole 2 is connected with the detection catheter channel 3; the detection catheter 1 is connected with the input end of the rear wire guide tube 9, and an external thread 4 is arranged on the outer wall of one end of the detection catheter 1 facing the rear wire guide tube 9, and the external thread 4 is located outside the connection part between the detection catheter 1 and the rear wire guide tube 9, and the external thread 4 is located outside the tee piece 6; the detection catheter 1 is aligned and plugged with the input end of the rear wire guide tube 9; it also includes a front wire inlet tube 8, the output port of the front wire inlet tube 8 is sleeved on the input end of the front wire guide tube 7, the internal channel of the front wire inlet tube 8 is aligned with the internal channel of the front wire guide tube 7, and the input port of the front wire inlet tube 8 is arranged as an inner tapered wide mouth.
[0022] During operation, the wire feeding mechanism of the wire cutting machine conveys the electrode wire, and the inner conical wide mouth of the front wire inlet tube 8 guides the electrode wire sent by the wire feeding mechanism, making it easier for the electrode wire to enter the front wire tube 7. When the wire head of the electrode wire extends from the output port of the front wire tube 7, it is guided by the inner conical hole 2 into the detection catheter channel 3. The detection catheter channel 3 guides the electrode wire, and the electrode wire enters the rear wire tube 9 through the detection catheter 1, and then conveys the electrode wire into the wire clamping mechanism of the wire cutting machine. When the electrode wire contacts the inner wall of the inner conical hole 2, since the detection catheter 1 carries the positive electrode and the electrode wire carries the negative electrode, the detection catheter 1 generates an electrical signal and transmits the electrical signal to the controller. The controller determines that the electrode wire head is in place and controls the wire feeding mechanism. The electrode wire is conveyed according to the set program. Since the inner conical hole 2 with a guiding function is used to replace the conductive sheet in the prior art, the blocking effect on the electrode wire head is reduced, the damage to the electrode wire is reduced, and the use effect of the electrode wire is not affected, which is beneficial to reducing the generation of waste wire and reducing the use cost. By arranging an external thread 4 at the end of the detection catheter 1, it is convenient to use a wiring sleeve with an electric wire to screw with the detection catheter 1, and it is also convenient to use the electric wire to directly wrap around and tighten the thread. The electric wire is connected to the controller, making the connection more convenient and firm. The end with a smaller diameter of the detection catheter channel 3 has a better precise contact effect on the electrode wire head, and at the same time, the contact area between the electrode wire and the detection catheter 1 is increased, which is beneficial to timely generate electrical signals and avoid missed judgments.
[0023] Example 2
[0024] like Figure 1 and Figure 4 As shown, on the basis of Example 1, it also includes a tee piece 6, one end of the detection catheter 1 facing the front wire guide tube 7 is installed in the first channel of the tee piece 6, the output end of the front wire guide tube 7 is installed in the second channel of the tee piece 6, the detection catheter 1 and the front wire guide tube 7 are aligned, and a gap is set between the detection catheter 1 and the front wire guide tube 7, and the gap is connected to the third channel of the tee piece 6; an internal thread 5 is set on the inner wall of the third channel of the tee piece 6, and the entrance of the third channel of the tee piece 6 is used to connect to the air inlet channel.
[0025] The tee piece 6 supports and fixes the detection duct 1, the front wire guide tube 7 and the rear wire guide tube 9. At the same time, the third channel of the tee piece 6 is connected to the high-pressure air pipe or the cleaning liquid pipe. When it is necessary to clean the detection duct channel 3, the interior of the front wire guide tube 7 and the interior of the rear wire guide tube 9, high-pressure air or cleaning liquid is input to allow the high-pressure air or cleaning liquid to enter the detection duct channel 3 and the front wire guide tube 7 through the gap between the detection duct 1 and the front wire guide tube 7, thereby air washing or cleaning the detection duct channel 3, the front wire guide tube 7 and the rear wire guide tube 9.
[0026] like Figures 1 to 4As shown, the wire threading detection and positioning mechanism of the utility model, when it is working, first the electrode wire transported by the wire feeding mechanism of the wire cutting machine is guided by the front wire inlet tube 8 and then enters the front wire tube 7, and the electrode wire is transported along the front wire tube 7, and then when the wire head of the electrode wire extends from the output port of the front wire tube 7, it is guided by the inner tapered hole 2 to enter the detection catheter channel 3, and the detection catheter channel 3 guides the electrode wire so that the electrode wire passes through the detection catheter 1 and enters the rear wire tube 9, and then the wire feeding mechanism of the wire cutting machine transports the electrode wire along the front wire tube, and when the wire head of the electrode wire extends from the output port of the front wire tube, it is guided by the inner tapered hole to enter the detection catheter channel, and the detection catheter channel guides the electrode wire so that the electrode wire passes through the detection catheter and enters the rear wire tube Tube, and then transport the electrode wire into the wire clamping mechanism of the wire cutting machine. When the electrode wire contacts the inner wall of the inner tapered hole 2, the electrode wire is electrified, so that the detection catheter 1 generates an electrical signal and transmits the electrical signal to the controller of the wire cutting machine through the wire. The controller determines that the electrode wire head is in place, and controls the wire feeding mechanism to transport the electrode wire according to the set program. When threading the wire, if it is necessary to clean the detection catheter channel 3, the interior of the front wire tube 7 and the interior of the rear wire tube 9, high-pressure air or cleaning liquid is input to allow the high-pressure air or cleaning liquid to enter the detection catheter channel 3 and the front wire tube 7 through the gap between the detection catheter 1 and the front wire tube 7, thereby air washing or cleaning the detection catheter channel 3, the front wire tube 7 and the rear wire tube 9.
[0027] The main functions achieved by this utility model are:
[0028] 1. The inner cone hole is used to replace the conductive sheet in the prior art, which causes less damage to the electrode wire head and does not affect the use effect of the electrode wire, which is conducive to reducing the generation of waste wire and reducing the use cost;
[0029] 2. It is convenient to clean the detection mechanism through the three-way fitting;
[0030] 3. It is convenient to connect the wires between the detection mechanism and the controller.
[0031] The installation method, connection method or setting method of the wire threading detection and positioning mechanism of the present invention are all common mechanical methods, and can be implemented as long as they can achieve their beneficial effects; the external thread 4, internal thread 5, tee piece 6, front wire guide tube 7, front wire guide inlet tube 8, and rear wire guide tube 9 of the wire threading detection and positioning mechanism of the present invention are purchased on the market, and technical personnel in the industry only need to install and operate them according to the accompanying instruction manual, without the need for technical personnel in this field to pay creative labor.
[0032] All technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0033] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. A wire threading detection and positioning mechanism, comprising a front wire guide tube (7) and a rear wire guide tube (9), wherein the input port of the front wire guide tube (7) is connected to the wire feeding mechanism, the internal channel of the front wire guide tube (7) is used to guide the electrode wire, the output port of the rear wire guide tube (9) is aligned with the wire clamping mechanism of the wire cutting machine, and the output port of the front wire guide tube (7) is aligned with the input port of the rear wire guide tube (9); characterized in that: The invention also comprises a detection duct (1), an inner conical hole (2) and a detection duct channel (3); the detection duct (1) is located between the output port of the front wire guide tube (7) and the input port of the rear wire guide tube (9); the detection duct (1) and the front wire guide tube (7) are insulated; the detection duct (1) is connected to a controller; a detection duct channel (3) is provided in the axial direction of the detection duct (1); one end of the detection duct channel (3) is aligned with the output port of the front wire guide tube (7); the other end of the detection duct channel (3) is aligned with the input port of the rear wire guide tube (9); the end of the detection duct (1) facing the front wire guide tube (7) is provided with an inner conical hole (2); the end of the inner conical hole (2) facing the front wire guide tube (7) is widened; the other end of the inner conical hole (2) is connected with the detection duct channel (3).
2. The wire threading detection and positioning mechanism according to claim 1, characterized in that: It also comprises a three-way piece (6), one end of the detection catheter (1) facing the front wire guide tube (7) is installed in the first channel of the three-way piece (6), the output end of the front wire guide tube (7) is installed in the second channel of the three-way piece (6), the detection catheter (1) and the front wire guide tube (7) are aligned, a gap is set between the detection catheter (1) and the front wire guide tube (7), and the gap is connected to the third channel of the three-way piece (6).
3. The wire threading detection and positioning mechanism according to claim 2, characterized in that: The third channel inlet of the three-way piece (6) is used to connect to the air inlet channel.
4. The wire threading detection and positioning mechanism according to claim 2, characterized in that: The detection catheter (1) is connected to the input end of the rear wire guide tube (9), and an external thread (4) is provided on the outer wall of one end of the detection catheter (1) facing the rear wire guide tube (9). The external thread (4) is located outside the connection portion between the detection catheter (1) and the rear wire guide tube (9), and the external thread (4) is located outside the tee piece (6).
5. The wire threading detection and positioning mechanism according to claim 4, characterized in that: The detection catheter (1) is aligned and plugged with the input end of the rear wire guide tube (9).
6. The wire threading detection and positioning mechanism according to claim 1, characterized in that: The detection conduit channel (3) is designed to be variable in diameter, and the diameter of the end of the detection conduit channel (3) close to the inner conical hole (2) is smaller than the diameter of the end away from the inner conical hole (2).
7. The wire threading detection and positioning mechanism according to claim 1, characterized in that: It also includes a front wire inlet tube (8), the output port of the front wire inlet tube (8) is sleeved on the input end of the front wire tube (7), the internal channel of the front wire inlet tube (8) is aligned with the internal channel of the front wire tube (7), and the input port of the front wire inlet tube (8) is set as an inner conical wide mouth.