Wire threading mechanism for linear cutting machine tool

Abstract

The utility model discloses a wire threading mechanism for a linear cutting machine tool. The wire threading mechanism comprises a first supporting table, a second supporting table and a motor bearing cushion block. The utility model relates to the technical field of machine tool accessory assistance, the cutting wire can be rapidly and stably installed on the mechanism through the design of a cutting wire multi-dimensional tension structure, by means of the structure, a linear cutting machine tool can be rapidly and efficiently put into operation, and the machining efficiency is remarkably improved; compared with a part of mechanisms of the same type, the mechanism effectively avoids the risk that the cutting wire is damaged due to excessive tensioning, and by precisely regulating and controlling the tensioning force, the potential problem caused by improper tension is avoided while the installation stability of components is guaranteed, so that the wire cutting operation can be efficiently carried out in a safe and stable environment, and the working efficiency is improved. And powerful support is provided for the production efficiency and the product quality of enterprises.

Description

Technical Field

[0001] This utility model relates to the field of machine tool auxiliary technology, specifically a wire threading mechanism for a wire EDM machine. Background Technology

[0002] Wire EDM machines, as high-precision electrical discharge machining (EDM) equipment, use continuously moving fine metal wires (molybdenum or copper wires) as electrodes to cut workpieces using pulsed spark discharge. Belonging to the field of electro-erosion machining, their unique processing method easily handles the machining needs of complex shapes and high-precision parts. The machine tools offer significant advantages: high machining accuracy, good surface quality, and the ability to cut intricate structures and complex cavities. Furthermore, they are not limited by material hardness, efficiently machining both cemented carbide and hardened steel, among other difficult-to-machine materials. In mold manufacturing, precision machinery, aerospace, and other fields, wire EDM machines are essential for manufacturing precision parts and... The key equipment for mold making, through CNC programming, precisely controls the movement trajectory of the electrode wire, enabling it to complete various cutting tasks efficiently and accurately. However, wire EDM machines also have certain shortcomings. In actual operation, the wire threading process is often time-consuming and labor-intensive, which not only increases the workload of operators but may also affect processing efficiency and quality due to improper threading. Therefore, optimizing the threading operation and improving threading efficiency is an important direction for improving the overall performance of wire EDM machines. In response to the above problems, there may already be technical means to solve them in the existing technology, but this case aims to provide an alternative or replacement technical solution. Utility Model Content

[0003] To achieve the above objectives, this utility model provides the following technical solution: a wire threading mechanism for a wire EDM machine, comprising: a first support platform, a second support platform, and a motor support pad, wherein the motor support pad is mounted on the second support platform, and a multi-dimensional tensioning structure for the cutting wire is mounted on the first support platform, wherein the multi-dimensional tensioning structure for the cutting wire comprises: a winding motor, a winding hub, a cutting wire, a guide wheel mounting platform, a tension adjustment height column, an internal displacement screw, a height adjustment rotor, a tension height adjustment module, several wire guide wheels, a first extension support block, a pair of first buffer springs, an extension buffer wheel frame, a first buffer wheel, a second extension support block, a second buffer spring, a second buffer wheel frame, and several wire guide wheels;

[0004] The winding motor is mounted on the motor support block, the winding hub is mounted on the winding motor, the cutting wire is fitted on the winding hub and connected to the second buffer wheel frame, the cutting wire is connected to several wire guide wheels and several wire guide wheels, the cutting wire is connected to the first buffer wheel, the guide wheel mounting platform is mounted on the first support platform, the tension adjustment height column is mounted on the guide wheel mounting platform, the tension adjustment height column has a displacement mounting groove, the column internal displacement screw is mounted inside the tension adjustment height column through the displacement mounting groove, the height adjustment rotor is mounted on the tension adjustment height column and connected to the column internal displacement screw, and the tension height adjustment module is mounted through the displacement mounting groove. The tension height adjustment module is installed on the tension height adjustment column and mounted on the displacement screw inside the column. Several thread guide wheels are respectively installed on the tension height adjustment module. The first extension support block is installed on the tension height adjustment module. A pair of first buffer springs are respectively installed on the first extension support block and connected to the extension buffer wheel frame. The extension buffer wheel frame is installed on the first extension support block via a rotating shaft. The first buffer wheel is installed on the extension buffer wheel frame. The second extension support block is installed on the guide wheel mounting platform. The second buffer spring is installed on the second extension support block. The second buffer wheel frame is installed on the guide wheel mounting platform via a rotating shaft. Several thread guide wheels are respectively installed on the guide wheel mounting platform. A thread-locking assembly is installed on the guide wheel mounting platform.

[0005] It should be noted that, in the above process, one end of the cutting wire is first secured to the take-up hub via the wire clamp on the take-up hub. Then, it passes sequentially through the first buffer wheel and the six wire guide wheels on the tension height adjustment module, descends, passes through the locking threading assembly, passes through the four spring-loaded support blocks, passes through the second buffer wheel frame, and finally returns to the take-up hub, completing the initial winding of the cutting wire. The second support platform, in conjunction with the motor support pad, activates the take-up motor, causing the take-up hub to rotate slowly. This gradually drives the height adjustment rotor above the tension height adjustment column, thereby actuating the displacement screw inside the column and causing the tension height adjustment module to slowly rise. During this process, the locking threading assembly is inactive, and the first extension... A pair of first buffer springs on the support block will buffer and provide a certain damping thrust to the extended buffer wheel frame, so that the first buffer wheel can support the cutting wire attached to it to the maximum extent. The second buffer spring works on the same principle with the second extended support block and the second buffer wheel frame. However, through the cooperative contact sensor set on the second buffer wheel frame, the deflection status of the second buffer wheel frame can be analyzed. Once the second buffer wheel frame is in close contact with the second extended support block, it will trigger the winding motor to slow down, thereby preventing the cutting wire from running too fast and causing damage to the cutting wire or the entire mechanism. Even if there is a problem with the wire routing at a certain position, if the second buffer wheel frame continues to be in contact with the second extended support block, the winding motor will automatically stop, thereby protecting the cutting wire and the mechanism.

[0006] Preferably, the thread-locking assembly includes: a conductive bonding block, a spring-mounted block, a first bonding rotary rod, a second bonding rotary rod, a pair of thread clamping blocks, a limiting irregular guide block, and a third buffer spring;

[0007] The conductive bonding block is mounted on the guide wheel mounting platform, the spring mounting block is mounted on the guide wheel mounting platform, the first bonding rotary rod is inserted into the spring mounting block, the second bonding rotary rod is inserted into the conductive bonding block, a pair of wire clamps are respectively mounted on the second bonding rotary rod and the first bonding rotary rod, the limiting irregular guide block is mounted on the third buffer spring, the third buffer spring is mounted on the spring mounting block, and the cutting wire is inserted into the limiting irregular guide block;

[0008] It should be noted that, in the above process, when the cutting wire needs to continue threading downwards after passing through multiple wire guide wheels, the cutting wire is first passed through the limiting irregular guide block, ensuring its length exceeds the first wire guide wheel on the right. Then, the first and second engagement rods are simultaneously turned, clamping the cutting wire in place with a pair of wire clamps. At this point, the cutting wire will not extend or retract arbitrarily. After the cutting wire is wound around the wire guide wheel, simply turning either the second or first engagement rod on one side will restore the wire's flow, allowing it to continue its downward movement. This makes winding around multiple wire guide wheels more convenient and faster. Once the cutting wire is wound... When adjusting the height of the tension height adjustment module, first fully separate the pair of wire clamps from the cutting wire. If the tension height adjustment module is too high, it will cause the cutting wire to move the limiting guide block, which will then fit into the conductive bonding block. At this time, the pressure sensor on the limiting guide block will release a signal, causing the tension height adjustment module to fine-tune and lower the height until the signal disappears. This effectively prevents the cutting wire from being over-tensioned and breaking. The third buffer spring keeps the limiting guide block in a neutral working position, facilitating the operation of the cutting wire and ensuring that the cutting wire can always maintain a smooth running trajectory.

[0009] Preferably, a pressure sensor is provided on the limiting irregular guide block;

[0010] Preferably, the second bonding screw is provided with twisting friction-enhancing grooves;

[0011] Preferably, the winding hub is provided with a wire clamp;

[0012] Preferably, a co-fitting sensor is provided on the second buffer wheel frame.

[0013] Beneficial effects

[0014] This utility model provides a wire threading mechanism for wire EDM machines. It offers the following advantages compared to existing technologies: Firstly, the multi-dimensional tension structure of the cutting wire allows for rapid and stable installation. This structure enables the wire EDM machine to operate quickly and efficiently, significantly improving processing efficiency. Secondly, compared to some similar mechanisms, this mechanism effectively avoids the risk of wire damage due to excessive tension. By precisely controlling the tension, it ensures the stability of component installation while preventing potential problems caused by improper tension. This allows wire EDM operations to be carried out efficiently in a safe and stable environment, providing strong support for enterprise production efficiency and product quality. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the wire threading mechanism for a wire EDM machine tool according to the present invention.

[0016] Figure 2 for Figure 1 A magnified view of the letter "A" in the diagram.

[0017] Figure 3 for Figure 1 A magnified view of a portion of the letter "B".

[0018] Figure 4 for Figure 1 A magnified view of a portion of the letter "C".

[0019] In the diagram: 1. First support platform; 2. Second support platform; 3. Motor support pad; 4. Rewinding motor; 5. Rewinding hub; 6. Cutting wire; 7. Guide wheel mounting platform; 8. Tension adjustment height column; 9. Column displacement screw; 10. Height adjustment rotor; 11. Tension height adjustment module; 12. Wire guide wheel body; 13. First extension support block; 14. First buffer spring; 15. Extension buffer wheel frame; 16. First buffer wheel; 17. Second extension support block; 18. Second buffer spring; 19. Second buffer wheel frame; 20. Wire guide wheel; 21. Conducting bonding block; 22. Spring mounting block; 23. First bonding rotary rod; 24. Second bonding rotary rod; 25. Wire clamp block; 26. Limiting irregular guide block; 27. Third buffer spring. Detailed Implementation

[0020] 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.

[0021] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires. Appropriate controllers and encoders should be selected according to the actual situation to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical components are connected in sequence. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, and will not describe the electrical control further.

[0022] Example

[0023] The present invention will now be described in detail with reference to the accompanying drawings, such as... Figure 1-4As shown, a wire threading mechanism for a wire EDM machine includes: a first support platform 1, a second support platform 2, and a motor support pad 3. The motor support pad 3 is mounted on the second support platform 2. A multi-dimensional tensioning structure for the cutting wire is mounted on the first support platform 1. The multi-dimensional tensioning structure for the cutting wire includes: a winding motor 4, a winding hub 5, a cutting wire 6, a guide wheel mounting platform 7, a tension adjustment height column 8, an internal displacement screw 9, a height adjustment rotor 10, a tension height adjustment module 11, several wire guide wheels 12, a first extension support block 13, a pair of first buffer springs 14, an extension buffer wheel frame 15, a first buffer wheel 16, a second extension support block 17, a second buffer spring 18, a second buffer wheel frame 19, and several wire guides. Wheel 20; the winding motor 4 is mounted on the motor support pad 3, the winding hub 5 is mounted on the winding motor 4, the cutting wire 6 is fitted on the winding hub 5, and the cutting wire 6 is connected to the second buffer wheel frame 19. The cutting wire 6 is connected to several wire guide wheels 12, and to several wire guide wheels 20. The cutting wire 6 is connected to the first buffer wheel 16. The guide wheel mounting platform 7 is mounted on the first support platform 1. The tension adjustment height column 8 is mounted on the guide wheel mounting platform 7. The tension adjustment height column 8 has a displacement mounting groove. The displacement screw 9 inside the column is mounted through the displacement mounting groove. Inside the tension adjustment height column 8, the height adjustment rotor 10 is mounted on the tension adjustment height column 8 and connected to the displacement screw 9 inside the column. The tension height adjustment module 11 is inserted into the tension adjustment height column 8 through the displacement mounting groove and is fitted onto the displacement screw 9 inside the column. A plurality of wire guide wheels 12 are respectively mounted on the tension height adjustment module 11. The first extension support block 13 is mounted on the tension height adjustment module 11. A pair of first buffer springs 14 are respectively mounted on the first extension support block 13 and connected to the extension buffer wheel frame 15. The punching wheel frame 15 is mounted on the first extension support block 13 via a rotating shaft. The first buffer wheel 16 is mounted on the extension buffer wheel frame 15. The second extension support block 17 is mounted on the guide wheel mounting platform 7. The second buffer spring 18 is mounted on the second extension support block 17. The second buffer wheel frame 19 is mounted on the guide wheel mounting platform 7 via a rotating shaft. A plurality of the thread guide wheels 20 are respectively mounted on the guide wheel mounting platform 7. A thread-locking assembly is installed on the guide wheel mounting platform 7. The thread-locking assembly includes: a conductive bonding block 21, a spring mounting block 22, a first bonding rotating rod 23, a second bonding rotating rod 24, a pair of thread clamping blocks 25, a limiting irregular guide block 26, and a third buffer spring 27.The conductive bonding block 21 is mounted on the guide wheel mounting platform 7, the spring mounting block 22 is mounted on the guide wheel mounting platform 7, the first bonding rotating rod 23 is inserted into the spring mounting block 22, the second bonding rotating rod 24 is inserted into the conductive bonding block 21, a pair of wire clamping blocks 25 are respectively mounted on the second bonding rotating rod 24 and the first bonding rotating rod 23, the limiting irregular-shaped guide block 26 is mounted on the third buffer spring 27, the third buffer spring 27 is mounted on the spring mounting block 22, and the cutting wire 6 is inserted into the limiting irregular-shaped guide block 26.

[0024] According to the appendix Figure 1-4The process involves first securing one end of the cutting wire 6 to the winding hub 5 via a wire clamp, then passing it sequentially through the first buffer wheel 16 and the six wire guide wheels 12 on the tension height adjustment module 11. The wire then passes through the locking threading assembly, through the four spring-loaded support blocks 22, through the second buffer wheel frame 19, and finally back onto the winding hub 5, completing the initial winding of the cutting wire 6. The second support platform 2, in conjunction with the motor support pad 3, activates the winding motor 4, causing the winding hub 5 to rotate slowly. This gradually drives the height adjustment rotor 10 above the tension height adjustment column 8, thereby driving the displacement screw 9 inside the column and causing the tension height adjustment module 11 to slowly rise. During this process, the locking threading assembly is inactive, while the pair of… The first buffer spring 14 will provide buffering and a certain damping thrust to the extended buffer wheel frame 15, so that the first buffer wheel 16 can support the cutting wire 6 attached to it to the maximum extent. The second buffer spring 18 works on the same principle with the second extended support block 17 and the second buffer wheel frame 19. However, the deflection status of the second buffer wheel frame 19 can be analyzed by the cooperative contact sensor set on the second buffer wheel frame 19. Once the second buffer wheel frame 19 is in close contact with the second extended support block 17, the speed of the winding motor 4 will be slowed down to prevent the cutting wire 6 from running too fast and causing damage to the cutting wire 6 or the entire mechanism. Even if the cutting wire 6 has a poor wire routing at a certain position, the winding motor 4 will automatically stop when the second buffer wheel frame 19 continues to be in contact with the second extended support block 17, thereby protecting the cutting wire 6 and the mechanism.When the cutting wire 6 needs to continue threading downwards after passing through multiple wire guide wheels 12, first pass the cutting wire 6 through the limiting irregular guide block 26, ensuring that the length of the cutting wire 6 exceeds the first wire guide wheel 20 on the right. Then, simultaneously rotate the first contacting rod 23 and the second contacting rod 24, causing a pair of wire clamping blocks 25 to clamp and fix the cutting wire 6 in place. At this time, the cutting wire 6 will not extend or retract arbitrarily. After the cutting wire 6 is wound around the wire guide wheel 20, simply rotate the second contacting rod 24 or the first contacting rod 23 on one side, and the cutting wire 6 will return to its flowing state and continue its downward threading movement. Therefore, this method of winding around multiple wire guide wheels 20 is more convenient and faster. After the cutting wire 6 is wound, at a high tension... When adjusting the height, the tension height adjustment module 11 first fully separates the pair of wire clamps 25 from the cutting wire 6. If the tension height adjustment module 11 is too high, the cutting wire 6 will cause the limiting guide block 26 to shift, making the limiting guide block 26 fit with the conductive bonding block 21. At this time, the pressure sensor on the limiting guide block 26 will release a signal, causing the tension height adjustment module 11 to fine-tune the lowering height until the signal disappears. This effectively prevents the cutting wire 6 from being over-tensioned and breaking. The third buffer spring 27 keeps the limiting guide block 26 in a neutral working position, facilitating the operation of the cutting wire 6 and ensuring that the cutting wire 6 can always maintain a smooth running trajectory.

[0025] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wire threading mechanism for a wire EDM machine, comprising: A first support platform, a second support platform, and a motor support pad are provided. The motor support pad is installed on the second support platform. A multi-dimensional tension structure for the cutting wire is installed on the first support platform. The multi-dimensional tension structure for the cutting wire includes: a winding motor, a winding hub, a cutting wire, a guide wheel mounting platform, a tension height adjustment column, an internal displacement screw, a height adjustment rotor, a tension height adjustment module, several wire guide wheels, a first extension support block, a pair of first buffer springs, an extension buffer wheel frame, a first buffer wheel, a second extension support block, a second buffer spring, a second buffer wheel frame, and several wire guide wheels. The winding motor is mounted on the motor support block, the winding hub is mounted on the winding motor, the cutting wire is fitted on the winding hub and connected to the second buffer wheel frame, the cutting wire is connected to several wire guide wheels and several wire guide wheels, the cutting wire is connected to the first buffer wheel, the guide wheel mounting platform is mounted on the first support platform, the tension adjustment height column is mounted on the guide wheel mounting platform, the tension adjustment height column has a displacement mounting groove, the column internal displacement screw is mounted inside the tension adjustment height column through the displacement mounting groove, the height adjustment rotor is mounted on the tension adjustment height column and connected to the column internal displacement screw, and the tension height adjustment module is mounted through the displacement mounting groove. The tension height adjustment module is installed on the tension height adjustment column and mounted on the displacement screw inside the column. Several thread guide wheels are respectively installed on the tension height adjustment module. The first extension support block is installed on the tension height adjustment module. A pair of first buffer springs are respectively installed on the first extension support block and connected to the extension buffer wheel frame. The extension buffer wheel frame is installed on the first extension support block via a rotating shaft. The first buffer wheel is installed on the extension buffer wheel frame. The second extension support block is installed on the guide wheel mounting platform. The second buffer spring is installed on the second extension support block. The second buffer wheel frame is installed on the guide wheel mounting platform via a rotating shaft. Several thread guide wheels are respectively installed on the guide wheel mounting platform. A thread-locking assembly is installed on the guide wheel mounting platform.

2. The wire threading mechanism for a wire EDM machine according to claim 1, characterized in that, The thread-locking assembly includes: a conductive bonding block, a spring-mounted block, a first bonding rotary rod, a second bonding rotary rod, a pair of thread clamps, a limiting irregular guide block, and a third buffer spring. The conductive bonding block is mounted on the guide wheel mounting platform, the spring mounting block is mounted on the guide wheel mounting platform, the first bonding rotary rod is inserted into the spring mounting block, the second bonding rotary rod is inserted into the conductive bonding block, a pair of wire clamps are respectively mounted on the second bonding rotary rod and the first bonding rotary rod, the limiting irregular guide block is mounted on the third buffer spring, the third buffer spring is mounted on the spring mounting block, and the cutting wire is inserted into the limiting irregular guide block.

3. The wire threading mechanism for a wire EDM machine tool according to claim 2, characterized in that, A pressure sensor is installed on the limiting irregular guide block.

4. The wire threading mechanism for a wire EDM machine according to claim 3, characterized in that, The second bonding screw is provided with twisting friction-enhancing grooves.

5. The wire threading mechanism for a wire EDM machine according to claim 4, characterized in that, The winding hub is equipped with a wire clamp.

6. The wire threading mechanism for a wire EDM machine according to claim 5, characterized in that, The second buffer wheel frame is equipped with a co-fitting sensor.

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