Wire cutting machine capable of preventing wire breakage
By incorporating damping rings and helical springs into the online cutting machine, the problem of molybdenum wire folding is prevented from being spun too quickly due to inertia, thus achieving more efficient molybdenum wire management and neater cutting results.
Patent Information
- Application Number
- CN202520629470.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-04-07
AI Technical Summary
During wire cutting, molybdenum wire is prone to breaking due to excessively rapid rotation caused by inertia, affecting processing quality and efficiency.
Damping rings and helical springs are installed at both ends of the wire feeding frame. Friction and torsion spring function prevent the molybdenum wire roll from rotating too fast due to inertia. The helical spring between the damping ring and the outer cover provides torque to automatically retract excess molybdenum wire and avoid kinking.
It effectively prevents molybdenum wire breakage, reduces the frequency of re-wireing, and improves the neatness of the cut and processing quality of the workpiece.
Smart Images
Figure CN223932754U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a wire cutting machine that prevents wire breakage, and belongs to the field of wire cutting technology. Background Technology
[0002] Wire EDM machines are commonly used mechanical devices for metal cutting, capable of precision cutting of metal materials with high hardness and good thermal stability. Before cutting, the molybdenum wire is led out and installed into the wire feeding mechanism. During the wire leading-out process, if the wire coil speed is too high, exceeding the wire's moving speed, too much wire is led out, often resulting in kinks. In actual cutting operations, the molybdenum wire will break at the kink. This not only causes the trouble of re-threading the wire but also leaves broken wire marks on the workpiece, affecting the processing quality. Utility Model Content
[0003] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a wire cutting machine that prevents wire breakage. It has the advantage of preventing the molybdenum wire from bending or breaking.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a wire cutting machine for preventing wire breakage, comprising a wire feeding frame, a central shaft and a molybdenum wire roll, the central shaft passing through the molybdenum wire roll and the wire feeding frame, the molybdenum wire roll being rotatably connected to the central shaft, the wire feeding frame having an outlet, and the molybdenum wire discharged from the molybdenum wire roll passing through the outlet;
[0005] Damping rings are abutted at both ends of the molybdenum wire roll, and outer covers are connected to the inner sides of both ends of the wire feeding frame. A helical spring is provided between the damping ring and the outer cover, with one end of the helical spring fixedly connected to the damping ring and the other end fixedly connected to the outer cover. Both the damping ring and the outer cover are provided with through holes, and the central shaft passes through the through holes. A first rough surface is provided on the damping ring, and a second rough surface is provided on the molybdenum wire roll. The first rough surface abuts against the second rough surface.
[0006] The present invention is further configured such that both the first rough surface and the second rough surface are dry sandpaper.
[0007] The present invention is further configured such that: the two ends of the central shaft are provided with external threads, and a first nut is screwed onto the external threads, the first nut abutting against the two ends of the wire feeding frame.
[0008] The present invention is further configured such that: a rotating seat is provided on the wire feeding frame, an adjusting screw is rotatably connected in the rotating seat, and a rotating hand ring is fixedly connected to one end of the adjusting screw; a second nut is fixedly provided on the outer cover, and the second nut is screwed to the adjusting screw.
[0009] A further feature of this invention is that the two ends of the molybdenum wire coil are rotatably connected to the central shaft via bearings.
[0010] The present invention is further configured such that: the outer cover is cup-shaped, and one end of the damping ring extends into the outer cover.
[0011] Compared with existing technologies, the beneficial effects of this utility model are as follows: An outer cover is connected to the inner sides of both ends of the wire feeding frame, and damping rings are respectively abutted at both ends of the molybdenum wire roll. A helical spring is installed between the damping ring and the outer cover, with one end of the helical spring fixedly connected to the damping ring and the other end fixedly connected to the outer cover. During the unwinding and rotation of the molybdenum wire roll, the damping ring exerts friction on the molybdenum wire roll, preventing further rotation due to inertia. The helical spring not only extends and retracts but also functions as a torsion spring. Maintaining the damping ring in constant contact with the molybdenum wire roll also allows the damping ring to twist relative to the outer cover, providing torque to the damping ring to prevent further rotation of the molybdenum wire roll. During the drawing-out of the molybdenum wire, even if excess molybdenum wire is discharged, the helical spring twists in the opposite direction, driving the molybdenum wire roll to rotate in the opposite direction through the damping ring, retracting the excess molybdenum wire roll and tightening the discharged molybdenum wire. This prevents excessive drawing out of the molybdenum wire, avoiding kinks in the wire and preventing breakage at the kinks. This not only reduces the frequency of re-threading, but also results in cleaner cuts on the workpiece, improving processing quality. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of a wire cutting machine for preventing wire breakage, as shown in a preferred embodiment of the present invention;
[0013] Figure 2 for Figure 1 A magnified schematic diagram of the structure of the middle circle A.
[0014] In the diagram: 1. Wire feeding frame; 2. Central shaft; 3. First nut; 4. Molybdenum wire coil; 5. Outlet; 6. Molybdenum wire; 7. Damping ring; 8. Helical spring; 9. Outer cover; 10. First rough surface; 11. Second rough surface; 12. Rotating hand ring; 13. Rotating seat; 14. Second nut; 15. Bearing; 16. Adjusting screw. Detailed Implementation
[0015] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.
[0016] See appendix Figure 1-2 As shown, a wire cutting machine with anti-broken wire in this embodiment includes a wire feeding frame 1, a central shaft 2 and a molybdenum wire roll 4. The central shaft 2 passes through the molybdenum wire roll 4 and the wire feeding frame 1. The molybdenum wire roll 4 is rotatably connected to the central shaft 2. The wire feeding frame 1 has an outlet 5. The molybdenum wire 6 discharged from the molybdenum wire roll 4 passes through the outlet 5.
[0017] The molybdenum wire roll 4 has damping rings 7 abutting at both ends. The inner sides of the two ends of the wire feeding frame 1 are connected to outer covers 9. A helical spring 8 is provided between the damping rings 7 and the outer covers 9. One end of the helical spring 8 is fixedly connected to the damping rings 7 and the other end is fixedly connected to the outer covers 9. Both the damping rings 7 and the outer covers 9 are provided with through holes, and the central shaft 2 passes through the through holes. The damping rings 7 are provided with a first rough surface 10, and the molybdenum wire roll 4 is provided with a second rough surface 11. The first rough surface 10 and the second rough surface 11 abut against each other.
[0018] An outer cover 9 is connected to the inner sides of both ends of the wire feeding frame 1. Damping rings 7 are respectively abutted against both ends of the molybdenum wire roll 4. A helical spring 8 is installed between the damping ring 7 and the outer cover 9, with one end of the helical spring 8 fixedly connected to the damping ring 7 and the other end fixedly connected to the outer cover 9. During the unwinding and rotation of the molybdenum wire roll 4, the damping ring 7 exerts friction on the molybdenum wire roll 4, preventing further rotation due to inertia. The helical spring 8 not only extends and retracts but also functions as a torsion spring. Maintaining the damping ring 7 in constant contact with the molybdenum wire roll 4 also allows the damping ring 7 to twist relative to the outer cover 9, providing torque to the damping ring 7 to prevent further rotation of the molybdenum wire roll 4. Since the damping ring 7 has a first rough surface 10 and the molybdenum wire roll 4 has a second rough surface 11, the first rough surface abuts against the second rough surface. The relative rotation of the first and second friction surfaces enhances the friction between the damping ring 7 and the molybdenum wire roll 4. During the drawing-out of molybdenum wire 6, even if the molybdenum wire coil 4 rotates at a high speed, it can overcome inertia and automatically stop rotating. Even if excess molybdenum wire coil 4 is discharged, the helical spring 8 twists in the opposite direction, driving the molybdenum wire coil 4 to rotate in the opposite direction through the damping ring 7, retracting the excess molybdenum wire coil 4 and tightening the discharged molybdenum wire 6. This prevents excessive drawing out of the molybdenum wire 6, avoiding kinks and breakage at the kinks. This not only reduces the frequency of rewinding but also results in cleaner cuts on the workpiece, improving processing quality.
[0019] To enhance the friction between the damping ring 7 and the molybdenum wire roll 4, this invention further comprises: both the first rough surface 10 and the second rough surface 11 are dry sandpaper. Dry sandpaper has a large coefficient of friction, which can enhance the friction between the damping ring 7 and the molybdenum wire roll 4.
[0020] To facilitate the installation of the central shaft 2 and the molybdenum wire roll 4, this utility model is further configured such that: both ends of the central shaft 2 are provided with external threads, and a first nut 3 is screwed onto the external threads, the first nut 3 abutting against both ends of the pay-off frame 1. An outer cover 9, a helical spring 8, a damping ring 7, and the molybdenum wire roll 4 are placed in the pay-off frame 1, and inserted through the central shaft 2; by tightening the first nut 3, the central shaft 2 is fixedly installed in the pay-off frame 1.
[0021] To facilitate adjustment of the friction between the damping ring 7 and the molybdenum wire coil 4, this invention is further configured as follows: a rotating seat 13 is provided on the wire feeding frame 1, and an adjusting screw 16 is rotatably connected to the rotating seat 13. One end of the adjusting screw 16 is fixedly connected to a rotating hand ring 12; a second nut 14 is fixedly provided on the outer cover 9, and the second nut 14 is screwed to the adjusting screw 16. By rotating the rotating hand ring 12, the adjusting screw 16 is driven to rotate in the rotating seat 13. Since the second nut 14 is screwed to the adjusting screw 16, the second nut 14 is fixedly connected to the outer cover 9. A central shaft 2 is provided through the through hole of the outer cover 9. The outer cover 9 moves along the axial direction of the adjusting screw 16, adjusting the distance between the outer cover 9 and the damping ring 7. The greater the distance, the smaller the normal pressure of the helical spring 8 on the damping ring 7, and the smaller the friction between the damping ring 7 and the molybdenum wire coil 4; the smaller the distance, the greater the normal pressure of the helical spring 8 on the damping ring 7, and the greater the friction between the damping ring 7 and the molybdenum wire coil 4.
[0022] In order to facilitate the rotation of the molybdenum wire roll 4 on the central shaft 2 and prevent the molybdenum wire roll 4 from getting stuck during rotation, which would cause the molybdenum wire roll 4 to break, the present invention is further configured such that: both ends of the molybdenum wire roll 4 are rotatably connected to the central shaft 2 through bearings 15.
[0023] To prevent debris from obstructing the extension and retraction of the helical spring 8, this invention is further configured such that the outer cover 9 is cup-shaped, and one end of the damping ring 7 extends into the outer cover 9. The gap between the damping ring 7 and the outer cover 9 is small, making it difficult for debris to enter and obstruct the extension and retraction of the helical spring 8.
[0024] In summary, the principle of the wire EDM machine with anti-broken wire shown in this utility model is as follows: An outer cover 9, a helical spring 8, a damping ring 7, and a molybdenum wire roll 4 are placed in the wire feeding frame 1, and inserted through the central shaft 2. The central shaft 2 is fixedly installed in the wire feeding frame 1 by tightening the first nut 3. The adjusting screw 16 is rotatably connected to the rotating seat 13 and screwed to the second nut 14. The distance between the outer cover 9 and the damping ring 7 is adjusted. The greater the distance, the smaller the normal pressure of the helical spring 8 on the damping ring 7, and the smaller the friction between the damping ring 7 and the molybdenum wire roll 4; the smaller the distance, the greater the normal pressure of the helical spring 8 on the damping ring 7, and the greater the friction between the damping ring 7 and the molybdenum wire roll 4. During the unwinding and rotation of the molybdenum wire roll 4, there is friction between the damping ring 7 and the molybdenum wire roll 4, preventing the molybdenum wire roll 4 from rotating further due to inertia. The helical spring 8 not only extends and retracts to keep the damping ring 7 in constant contact with the molybdenum wire coil 4, but also functions as a torsion spring, allowing the damping ring 7 to twist relative to the outer cover 9. This provides torque to the damping ring 7, so even after excess molybdenum wire coil 4 is discharged, the helical spring 8 rebounds and twists in the opposite direction, driving the molybdenum wire coil 4 to rotate in the opposite direction via the damping ring 7, thus retracting the excess wire coil 4 and tightening the discharged molybdenum wire 6. This prevents excessive wire 6 from being drawn out, avoiding kinks and breakage at the kinks. This not only reduces the frequency of rewinding but also results in cleaner cuts on the workpiece, improving processing quality.
[0025] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.
Claims
1. A wire cutting machine with anti-broken wire, comprising a wire feeding frame (1), a central shaft (2) and a molybdenum wire roll (4), wherein the central shaft (2) passes through the molybdenum wire roll (4) and the wire feeding frame (1), the molybdenum wire roll (4) is rotatably connected to the central shaft (2), the wire feeding frame (1) has an outlet (5), and the molybdenum wire (6) discharged from the molybdenum wire roll (4) passes through the outlet (5); Its features are, The molybdenum wire roll (4) has damping rings (7) abutting at both ends. The inner sides of the wire feeding frame (1) are connected to outer covers (9). A helical spring (8) is provided between the damping ring (7) and the outer cover (9). One end of the helical spring (8) is fixedly connected to the damping ring (7), and the other end is fixedly connected to the outer cover (9). Both the damping ring (7) and the outer cover (9) are provided with through holes. The central shaft (2) passes through the through holes. The damping ring (7) is provided with a first rough surface (10), and the molybdenum wire roll (4) is provided with a second rough surface (11). The first rough surface (10) and the second rough surface (11) abut against each other.
2. The wire cutting machine for preventing wire breakage according to claim 1, characterized in that, Both the first rough surface (10) and the second rough surface (11) are dry sandpaper.
3. The wire cutting machine for preventing wire breakage according to claim 2, characterized in that, The central shaft (2) has external threads at both ends, and a first nut (3) is screwed onto the external threads. The first nut (3) abuts against both ends of the wire feeding frame (1).
4. The wire cutting machine for preventing wire breakage according to claim 3, characterized in that, The wire feeding frame (1) is provided with a rotating seat (13), and an adjusting screw (16) is rotatably connected in the rotating seat (13). One end of the adjusting screw (16) is fixedly connected to a rotating hand ring (12); a second nut (14) is fixedly provided on the outer cover (9), and the second nut (14) is screwed to the adjusting screw (16).
5. The wire cutting machine for preventing wire breakage according to claim 4, characterized in that, The two ends of the molybdenum wire coil (4) are rotatably connected to the central shaft (2) via bearings (15).
6. The wire cutting machine for preventing wire breakage according to claim 5, characterized in that, The outer cover (9) is cup-shaped, and one end of the damping ring (7) extends into the outer cover (9).