A wire threading mechanism

Abstract

This utility model discloses an upper wire threading mechanism, relating to the field of wire EDM equipment technology. It includes a base and a molybdenum wire. A lifting drive module is mounted on the front of the base, and a molybdenum wire drive module is mounted on the drive end of the lifting drive module. The lifting drive module can drive the molybdenum wire drive module to move up and down. An guide wheel is also mounted on the front of the base. The molybdenum wire enters from the inside of the guide wheel and exits from the bottom of the molybdenum wire drive module, which can drive the molybdenum wire to move. In this upper wire threading mechanism, the molybdenum wire drive module uses gear meshing and cylinder pushing and counteracting, making the transmission more stable, effectively reducing speed fluctuations during the movement of the molybdenum wire, significantly improving the surface quality of wire-cut parts, and reducing surface streaks and dimensional deviations caused by uneven speed.

Description

Technical Field

[0001] This utility model relates to the field of wire cutting equipment technology, specifically to an upper wire threading mechanism. Background Technology

[0002] Wire EDM technology, with its significant advantages such as high precision, high efficiency, and the ability to process complex-shaped parts, has become an indispensable processing method in many industries. As the core equipment for wire EDM processing, the performance of the wire EDM equipment directly affects the quality of the processed parts and production efficiency. The wire feeding mechanism, as a key component of the wire EDM equipment, has an internal molybdenum wire drive module that plays a crucial role in accurately guiding and stably driving the molybdenum wire. Its performance has a decisive impact on the entire wire EDM process. Some existing molybdenum wire drive modules exhibit poor drive stability during operation. Some modules use belt or chain transmission methods, which are prone to loosening and wear after prolonged use, leading to decreased transmission accuracy and unstable molybdenum wire movement speed. Speed ​​fluctuations cause uneven discharge energy during the cutting process, forming irregular stripes on the machined surface and severely affecting the surface quality of the processed parts. Especially when machining parts requiring high precision, speed fluctuations can cause dimensional deviations to exceed allowable limits, resulting in scrapped parts. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides an upper threading mechanism, which solves the problems mentioned in the background section.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an upper wire threading mechanism, comprising a base and a molybdenum wire, wherein a lifting drive module is mounted on the front side of the base, and a molybdenum wire drive module is mounted on the drive end of the lifting drive module, the lifting drive module being able to drive the molybdenum wire drive module to move up and down, and an guide wheel is also mounted on the front side of the base, the molybdenum wire passing through the inside of the guide wheel and exiting from the bottom of the molybdenum wire drive module, the molybdenum wire drive module being able to drive the molybdenum wire to move.

[0005] Furthermore, the lifting drive module includes a lifting drive motor mounted on the front of the base, the drive end of the lifting drive motor is connected to a lead screw, the lead screw is externally threaded to a drive seat, and a lifting seat is fixedly mounted on the front of the drive seat.

[0006] Furthermore, the lifting drive module also includes a linear guide rail mounted on the front of the base, and the lifting seat is slidably connected to the linear guide rail.

[0007] Furthermore, the molybdenum wire drive module includes a wire feeding drive motor, a wire pressing drive cylinder, and a wire tube installed on the lifting end of the lifting drive module. The drive end of the wire feeding drive motor is equipped with a drive gear and a drive roller, and the extension end of the wire pressing drive cylinder is equipped with a movable seat. The movable seat is rotatably connected to a driven gear and a driven roller, and the drive gear and the driven gear mesh.

[0008] Furthermore, a wire feeding channel is formed through the inside of the wire tube, and arc-shaped grooves are symmetrically formed at the bottom of the wire tube. The arc-shaped grooves are connected to the wire feeding channel, and the curvature of the arc-shaped grooves is adapted to the curvature of the driving roller and the driven roller, but they do not fit together. The driving roller and the driven roller are in contact with the surface of the molybdenum wire.

[0009] Furthermore, a discharge tube is fixedly connected to the bottom of the wire tube, and the molybdenum wire passes through the inside of the discharge tube.

[0010] This invention provides an upper threading mechanism. Compared with the prior art, it has the following advantages: The wire threading mechanism uses gear meshing and cylinder pushing to make the transmission more stable, effectively reducing speed fluctuations during the movement of the molybdenum wire, significantly improving the surface quality of wire-cut parts, and reducing surface streaks and dimensional deviations caused by uneven speed. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the disassembled structure of this utility model; Figure 2 This is a schematic diagram of the assembly structure of this utility model; Figure 3 This is a schematic diagram of the lifting drive module in this utility model; Figure 4 This is a schematic diagram showing the disassembled structure of the molybdenum wire drive module in this utility model; Figure 5 This is a schematic diagram of the wire tube structure in this utility model; Figure 6 This is a half-sectional view of the molybdenum wire in the wire tube being driven by the main and driven rollers in this utility model; Figure 7 This is a schematic diagram of the assembly structure of the molybdenum wire drive module in this utility model.

[0012] In the diagram: 1. Base; 2. Lifting drive module; 21. Lifting drive motor; 22. Lead screw; 23. Drive seat; 24. Lifting seat; 25. Linear guide rail; 3. Molybdenum wire drive module; 31. Wire feeding drive motor; 32. Wire pressing drive cylinder; 33. Wire tube; 331. Wire feeding channel; 332. Arc groove; 34. Drive gear; 35. Drive roller; 36. Movable seat; 37. Driven gear; 38. Driven roller; 39. Outlet tube; 4. Inlet wheel; 5. Molybdenum wire. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figure 1-7 This utility model provides a technical solution: an upper wire threading mechanism, mainly composed of a base 1, a lifting drive module 2, a molybdenum wire drive module 3, an guide wheel 4, and a molybdenum wire 5. The base 1 serves as the supporting foundation for the entire mechanism, with the lifting drive module 2 and the guide wheel 4 sequentially mounted on its front side. The drive end of the lifting drive module 2 is connected to the molybdenum wire drive module 3. The molybdenum wire 5 enters from inside the guide wheel 4, passes through the molybdenum wire drive module 3, and exits from the bottom. The molybdenum wire drive module 3 drives the movement of the molybdenum wire 5, while the lifting drive module 2 adjusts the height of the molybdenum wire drive module 3, thereby adjusting the height at which the molybdenum wire 5 exits. The lifting drive module 2 includes a lifting drive motor 21, a lead screw 22, a drive base 23, a lifting base 24, and a linear guide rail 25. The lifting drive motor 21 is securely mounted on the front of the base 1, with its drive end connected to the lead screw 22. The lead screw 22 is externally connected to the drive base 23 via a thread. The lifting base 24 is fixedly mounted on the front of the drive base 23. Simultaneously, the linear guide rail 25 is also mounted on the front of the base 1, and the lifting base 24 is slidably connected to the linear guide rail 25. This structural design allows the drive base 23 and the lifting base 24 to perform stable lifting movements along the direction of the linear guide rail 25 when the lifting drive motor 21 drives the lead screw 22 to rotate, due to the threaded connection between the lead screw 22 and the drive base 23 and the constraint effect of the linear guide rail 25. The molybdenum wire drive module 3 is installed on the lifting end of the lifting drive module 2, and mainly consists of a wire feeding drive motor 31, a wire pressing drive cylinder 32, and a wire tube 33. The drive end of the wire feeding drive motor 31 is equipped with a drive gear 34 and a drive roller 35. The telescopic end of the wire pressing drive cylinder 32 is equipped with a movable seat 36. The movable seat 36 has a driven gear 37 and a driven roller 38 rotatably connected inside, and the drive gear 34 and the driven gear 37 mesh with each other. A wire feeding channel 331 is formed through the inside of the wire tube 33, and symmetrical arc-shaped grooves 332 are formed at its bottom. The arc-shaped grooves 332 communicate with the wire feeding channel 331, and the curvature of the arc-shaped grooves 332 matches, but does not fit, the curvature of the drive roller 35 and the driven roller 38. A guide tube 39 is fixedly connected to the bottom of the wire tube 33, and the molybdenum wire 5 passes through the inside of the guide tube 39. Before starting work, the molybdenum wire 5 is passed through the inside of the guide wheel 4, then into the wire feeding channel 331 of the wire tube 33 of the molybdenum wire drive module 3, and finally out through the inside of the outlet tube 39, completing the installation of the molybdenum wire 5. When it is necessary to adjust the height of the bottom end of the outlet tube 39, that is, the height at which the molybdenum wire 5 exits, the lifting drive motor 21 is started. The lifting drive motor 21 drives the lead screw 22 to rotate. Since the lead screw 22 and the drive seat 23 are connected by a thread and there is a constraint of the linear guide rail 25, the drive seat 23 and the lifting seat 24 as a whole will move up and down along the direction of the linear guide rail 25. Since the molybdenum wire drive module 3 is installed on the lifting seat 24, the molybdenum wire drive module 3 will rise and fall synchronously with the lifting seat 24, thereby driving the outlet tube 39 to rise and fall, realizing precise adjustment of the height at which the molybdenum wire 5 exits. When driving the molybdenum wire 5, the wire-pressing drive cylinder 32 is first activated. The cylinder pushes the movable seat 36, driven gear 37, and driven roller 38 closer to the wire tube 33, ultimately engaging the drive gear 34 with the driven gear 37. At this time, both the drive roller 35 and the driven roller 38 are in contact with the surface of the molybdenum wire 5, which is inserted inside the wire feeding channel 331, via the arc-shaped groove 332. Subsequently, the wire feeding drive motor 31 is activated, driving the drive gear 34 and the drive roller 35 to rotate synchronously. Under the meshing action of the drive gear 34 and the driven gear 37, the driven gear 37 and the driven roller 38 rotate in opposite directions. Since the surfaces of the driven gear 37 and the driven roller 38 are in contact with the molybdenum wire 5, friction causes the molybdenum wire 5 to move downwards, thus achieving the conveying of the molybdenum wire 5.

Claims

1. A wire threading mechanism, comprising a base (1) and a molybdenum wire (5), characterized in that, A lifting drive module (2) is installed on the front of the base (1). A molybdenum wire drive module (3) is installed on the drive end of the lifting drive module (2). The lifting drive module (2) can drive the molybdenum wire drive module (3) to lift. An inlet wheel (4) is also installed on the front of the base (1). The molybdenum wire (5) passes through the inside of the inlet wheel (4) and exits from the bottom of the molybdenum wire drive module (3). The molybdenum wire drive module (3) can drive the molybdenum wire (5) to move.

2. The threading mechanism according to claim 1, characterized in that, The lifting drive module (2) includes a lifting drive motor (21) installed on the front of the base (1). The drive end of the lifting drive motor (21) is connected to a lead screw (22). The lead screw (22) is connected to a drive seat (23) by an external thread. A lifting seat (24) is fixedly installed on the front of the drive seat (23).

3. The threading mechanism according to claim 2, characterized in that, The lifting drive module (2) also includes a linear guide rail (25) installed on the front of the base (1), and the lifting seat (24) is slidably connected to the linear guide rail (25).

4. The threading mechanism according to claim 1, characterized in that, The molybdenum wire drive module (3) includes a wire feeding drive motor (31), a wire pressing drive cylinder (32), and a wire tube (33) installed on the lifting end of the lifting drive module (2). The drive end of the wire feeding drive motor (31) is equipped with a drive gear (34) and a drive roller (35). The telescopic end of the wire pressing drive cylinder (32) is equipped with a movable seat (36). The interior of the movable seat (36) is rotatably connected to a driven gear (37) and a driven roller (38). The drive gear (34) and the driven gear (37) mesh.

5. The threading mechanism according to claim 4, characterized in that, The wire tube (33) has a wire feeding channel (331) running through its interior, and the bottom of the wire tube (33) has symmetrical arc grooves (332). The arc grooves (332) are connected to the wire feeding channel (331), and the curvature of the arc grooves (332) is adapted to the curvature of the driving roller (35) and the driven roller (38), but they do not fit together. The driving roller (35) and the driven roller (38) fit together with the surface of the molybdenum wire (5).

6. The threading mechanism according to claim 5, characterized in that, The bottom of the wire tube (33) is fixedly connected to the outlet tube (39), and the molybdenum wire (5) passes through the inside of the outlet tube (39).

Images