Electrode wire structure for discharging of low-speed wire cutting machine

Abstract

The utility model discloses an electrode wire structure for discharging of a low-speed wire cutting machine, which comprises a fixed frame, a rotating shaft is movably arranged in the middle of the inner side of the fixed frame through a bearing, a guide wheel is fixedly arranged at the part, on the inner side of the fixed frame, of the rotating shaft, and a cutting wire is arranged at the upper end of the guide wheel. A conductive mechanism for supplying power to the cutting wire is arranged on the outer side of the fixed frame, the conductive mechanism comprises a conductive wheel, a sliding rail, a mounting block, a slot and a graphite electrode, the conductive wheel is fixedly arranged on the portion, on the outer side of the fixed frame, of the rotating shaft, and the sliding rail is fixedly arranged at the upper end of the conductive wheel on the outer side of the fixed frame. According to the utility model, the traditional mode of direct friction between the cutting wire and the electrode is changed into the mode of friction between the electrode and the rotating wheel, so that the condition that the movement of the cutting wire is influenced by a wire slot formed in the electrode due to abrasion of the electrode is avoided regardless of the friction, and the replacement frequency of the electrode can be obviously reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electrode wire structures, in particular to an electrode wire structure for discharging in a slow-moving wire cutting machine. Background Art

[0002] Slow wire cutting, also known as low-speed wire cutting, is a CNC machining machine that uses a continuously moving thin metal wire as an electrode to perform pulse spark discharge on the workpiece, generating a high temperature of over 6000 degrees, etching the metal and cutting it into the workpiece.

[0003] In the prior art, the electrode structure of the slow-moving wire cutting machine is generally composed of a conductive block made of tungsten steel alloy in contact with the cutting wire for power supply. However, in such electrode wire structures in the prior art, the position of the conductive block is fixed. As the wire moves slowly, grooves are gradually scratched on the surface of the conductive block. Once a groove appears, the cutting wire is easily stuck. In this way, the electrode block often needs to be replaced in just a few days, and the loss is high. Therefore, to address this problem, there is a need for an improved electrode wire structure for discharge in the slow-moving wire cutting machine. Utility Model Content

[0004] The purpose of the utility model is to provide an electrode wire structure for discharge of a slow-moving wire cutting machine, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electrode wire structure for discharge of a slow-moving wire cutting machine, comprising a fixed frame, a rotating shaft movably provided on the middle part of the inner side of the fixed frame through a bearing, a guide wheel fixedly provided on the inner part of the fixed frame of the rotating shaft, a cutting wire provided on the upper end of the guide wheel, a conductive mechanism for powering the cutting wire provided on the outer side of the fixed frame, the conductive mechanism comprising a conductive wheel, a slide rail, a mounting block, a slot, and a graphite electrode, a conductive wheel fixedly provided on the outer part of the fixed frame of the rotating shaft, a slide rail fixedly provided on the upper end of the conductive wheel on the outer side of the fixed frame, a mounting block movably engaged with a slider on the outer surface of the slide rail, a slot is provided in the middle part of the lower end surface of the mounting block, and a graphite electrode movably engaged with the inside of the slot.

[0006] Preferably, a telescopic rod is fixedly provided on the upper end of the slide rail, and the movable end of the telescopic rod is fixedly connected to the mounting block. The telescopic rod and the mounting block can push the graphite electrode to be tightly attached to the outer surface of the conductive wheel through the gravity of the telescopic rod and the mounting block.

[0007] Preferably, a spring is provided inside the telescopic rod, and the spring can push the telescopic rod to extend under the elastic action of the spring, thereby further pushing the graphite electrode to fit the surface of the conductive wheel.

[0008] Preferably, the conductive wheel, rotating shaft and guide wheel are all made of conductive metal materials, so that an external power source can be connected to the graphite electrode and then transmitted to the cutting wire through the graphite electrode, the conductive wheel, the rotating shaft and the guide wheel; thereby, power supply can be completed, and when the cutting wire moves, the guide wheel can rotate together to reduce friction and reduce maintenance. No matter how much friction loss the graphite electrode and the conductive wheel suffer, it will not affect the movement of the cutting wire, and the graphite electrode can be used until it is only slightly worn out and then replaced, thereby significantly reducing the frequency of electrode replacement.

[0009] Preferably, a groove is formed on the outer side of the conductive wheel, which can serve as a position limit for the graphite electrode.

[0010] Preferably, a fixing rod is fixedly provided on one side of the surface of the fixing frame, a guide ring is fixedly provided on the lower end of the fixing rod, and the cutting wire is sleeved inside the guide ring, and the movement stability of the cutting wire can be ensured by the guide ring.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. In the utility model, an external power source can be connected to the graphite electrode, and then transmitted to the cutting wire through the graphite electrode, the conductive wheel, the rotating shaft, and the guide wheel; thereby, power supply can be completed, and the guide wheel can rotate together with the cutting wire when the cutting wire moves, thereby reducing friction and maintenance. No matter how much friction loss occurs between the graphite electrode and the conductive wheel, it will not affect the movement of the cutting wire, and the graphite electrode can be used until it is only slightly worn out and then replaced, thereby significantly reducing the frequency of electrode replacement.

[0013] 2. The graphite electrode of the utility model is easy to replace. After the graphite electrode is worn to a threshold, the mounting block is moved upward by pushing the telescopic rod to retract, thereby pulling out the graphite electrode engaged in the slot and inserting a new graphite electrode, which makes the device convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of an electrode wire structure for discharge in a slow-moving wire cutting machine of the present invention;

[0015] Figure 2 This is a side view of an electrode wire structure for discharge in a wire-cutting machine according to the present invention;

[0016] Figure 3 This utility model is an electrode wire structure for discharge of slow wire cutting machine Figure 2 Magnified view at point A in the middle;

[0017] Figure 4 This is an installation view of a slot in an electrode wire structure for discharge in a slow-moving wire cutting machine according to the present invention.

[0018] In the figure: 1. Fixed frame; 2. Rotating axis; 3. Guide wheel; 4. Cutting wire; 5. Conductive wheel; 6. Slide rail; 7. Mounting block; 8. Slot; 9. Graphite electrode; 10. Telescopic rod; 11. Groove; 12. Fixed rod; 13. Guide ring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1-4 The utility model provides a technical solution: an electrode wire structure for discharge of a slow-moving wire cutting machine, comprising a fixed frame 1, a rotating shaft 2 movably provided on the middle part of the inner side of the fixed frame 1 through a bearing, a guide wheel 3 is fixedly provided on the inner part of the fixed frame 1 of the rotating shaft 2, a cutting wire 4 is provided on the upper end of the guide wheel 3, a conductive mechanism for powering the cutting wire 4 is provided on the outer side of the fixed frame 1, and the conductive mechanism includes a conductive wheel 5, a slide rail 6, a mounting block 7, a slot 8, and a graphite electrode 9, a conductive wheel 5 is fixedly provided on the outer part of the fixed frame 1 of the rotating shaft 2, a slide rail 6 is fixedly provided on the upper end of the conductive wheel 5 on the outer side of the fixed frame 1, a mounting block 7 is movably engaged with the outer surface of the slide rail 6 through a slider, a slot 8 is provided in the middle part of the lower end surface of the mounting block 7, and a graphite electrode 9 is movably engaged inside the slot 8.

[0021] A telescopic rod 10 is fixedly provided on the upper end of the slide rail 6, and the movable end of the telescopic rod 10 is fixedly connected to the mounting block 7. The telescopic rod 10 and the mounting block 7 can push the graphite electrode 9 to cling to the outer surface of the conductive wheel 5 through the gravity of the telescopic rod 10 and the mounting block 7.

[0022] The telescopic rod 10 is provided with a spring inside, and the telescopic rod 10 can be extended under the elastic action of the spring, thereby further pushing the graphite electrode 9 to fit the surface of the conductive wheel 5;

[0023] The conductive wheel 5, the rotating shaft 2, and the guide wheel 3 are all made of conductive metal materials, so that an external power source can be connected to the graphite electrode 9, and then transmitted to the cutting wire 4 through the graphite electrode 9, the conductive wheel 5, the rotating shaft 2, and the guide wheel 3; thereby, power supply can be completed, and when the cutting wire 4 moves, the guide wheel 3 can rotate together, thereby reducing friction and maintenance. No matter how much friction loss occurs between the graphite electrode 9 and the conductive wheel 5, it will not affect the movement of the cutting wire 4, and the graphite electrode 9 can be used until it is only slightly worn out before replacement, thereby significantly reducing the frequency of electrode replacement;

[0024] The conductive wheel 5 is provided with a groove 11 on its outer side. The groove 11 can serve as a position limit for the graphite electrode 9.

[0025] A fixing rod 12 is fixedly provided on one side of the surface of the fixing frame 1 , and a guide ring 13 is fixedly provided on the lower end of the fixing rod 12 . The cutting wire 4 is sleeved inside the guide ring 13 , and the guide ring 13 can ensure the movement stability of the cutting wire 4 .

[0026] Working principle: When using this device, external power can be connected to the graphite electrode 9, and then transmitted to the cutting wire 4 through the graphite electrode 9, the conductive wheel 5, the rotating shaft 2, and the guide wheel 3; thereby, power supply can be completed, and when the cutting wire 4 moves, the guide wheel 3 can rotate together, thereby reducing friction and maintenance. No matter how much friction loss occurs between the graphite electrode 9 and the conductive wheel 5, it will not affect the movement of the cutting wire 4. In addition, the graphite electrode 9 can be used until it is only slightly worn out before replacement, which can significantly reduce the frequency of electrode replacement.

[0027] In addition, the graphite electrode 9 of the device is easy to replace. After the graphite electrode 9 is worn to a threshold value, the mounting block 7 is moved upward by pushing the telescopic rod 10 to retract, thereby pulling out the graphite electrode 9 engaged in the slot and inserting a new graphite electrode 9, which makes the device convenient to use.

[0028] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electrode wire structure for discharge of a wire cutting machine, comprising a fixed frame (1), characterized in that: A rotating shaft (2) is movably provided on the middle part of the inner side of the fixed frame (1) through a bearing, a guide wheel (3) is fixedly provided on the inner part of the fixed frame (1) of the rotating shaft (2), a cutting wire (4) is provided on the upper end of the guide wheel (3), a conductive mechanism for supplying power to the cutting wire (4) is provided on the outer side of the fixed frame (1), the conductive mechanism comprises a conductive wheel (5), a slide rail (6), a mounting block (7), a slot (8), and a graphite electrode (9), a conductive wheel (5) is fixedly provided on the outer part of the fixed frame (1) of the rotating shaft (2), a slide rail (6) is fixedly provided on the upper end of the conductive wheel (5) on the outer side of the fixed frame (1), a mounting block (7) is movably engaged with the outer surface of the slide rail (6) through a slider, a slot (8) is provided in the middle part of the lower end surface of the mounting block (7), and a graphite electrode (9) is movably engaged inside the slot (8).

2. The electrode wire structure for discharge of a wire-cutting machine according to claim 1, characterized in that: A telescopic rod (10) is fixedly provided on the upper end of the slide rail (6), and a movable end of the telescopic rod (10) is fixedly connected to the mounting block (7).

3. The electrode wire structure for discharge of a wire-cutting machine according to claim 2, characterized in that: A spring is arranged inside the telescopic rod (10).

4. The electrode wire structure for discharge of a wire-cutting machine according to claim 1, characterized in that: The conductive wheel (5), the rotating shaft (2), and the guide wheel (3) are all made of conductive metal materials.

5. The electrode wire structure for discharge of a wire-cutting machine according to claim 1, characterized in that: A groove (11) is provided on the outer side of the conductive wheel (5).

6. The electrode wire structure for discharge of a wire-cutting machine according to claim 1, characterized in that: A fixing rod (12) is fixedly provided on one side of the surface of the fixing frame (1), a guide ring (13) is fixedly provided on the lower end of the fixing rod (12), and the cutting wire (4) is sleeved inside the guide ring (13).

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