Wire threading mechanism convenient to disassemble and assemble

Abstract

The utility model discloses a wire threading mechanism convenient to disassemble and assemble, which comprises a steering mechanism, a wire threading mechanism, a wire threading mechanism and a wire threading mechanism, the clamping and conveying mechanism is used for clamping and conveying the wire-shaped electrode forwards or backwards; the mounting arm is provided with a first mounting slot position and a second mounting slot position, the steering mechanism is detachably arranged in the first mounting slot position, and the clamping and conveying mechanism is detachably arranged in the second mounting slot position. By arranging the first installation groove position and the second installation groove position, detachable connection of the steering mechanism and the clamping and conveying mechanism is achieved, installation of the steering mechanism and the clamping and conveying mechanism does not interfere with each other, when one mechanism breaks down, maintenance can be conducted only by disassembling the corresponding mechanism, the maintenance efficiency of the machine table is remarkably improved, and the production operation efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wire cutting equipment, in particular to a wire threading mechanism which is easy to disassemble and assemble. Background Art

[0002] CNC wire cutting is a branch of EDM, which uses wire electrodes (molybdenum wire, copper wire, galvanized wire) to cut workpieces by spark discharge. In CNC wire cutting, the relative movement of the workpiece and the wire electrode 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] CNC wire cutting machines are usually divided into three categories: fast wire cutting machines, medium wire cutting machines and slow wire cutting machines; taking fast wire cutting machines as an example, the wire electrode makes high-speed reciprocating motion, and the wire speed is 8m / s~10m / s. Its working principle is: the wire electrode passes through the pre-drilled small hole on the workpiece, and moves back and forth alternately through the guide wheel driven by the wire drum. The workpiece is installed on the conductive workbench through the insulating plate. The conductive workbench moves in the horizontal plane X and Y coordinate directions according to the given control program to synthesize any plane curve trajectory. The pulse power supply applies a pulse voltage to the wire electrode and the workpiece, the wire electrode is connected to the negative pole of the pulse power supply, and the workpiece is connected to the positive pole of the pulse power supply. When an electric pulse comes, a spark discharge is generated between the wire electrode and the workpiece. The temperature in the center of the discharge channel can instantly reach more than 10,000°C. The high temperature melts the metal of the workpiece, and even a small amount of it is vaporized. The high temperature also vaporizes part of the working fluid between the wire electrode and the workpiece. The vaporized working fluid and metal vapor instantly expand rapidly and have the characteristics of explosion. This thermal expansion and local micro-explosion will throw out the melted and vaporized metal materials to achieve electro-erosion cutting of the workpiece material.

[0004] The assembly structure of the wire threading mechanism used in the existing wire cutting machine is relatively complex, and interference is easily generated between components. When a component fails, it is inconvenient to disassemble and maintain it, which seriously affects the production efficiency. Utility Model Content

[0005] The main purpose of the utility model is to provide a threading mechanism which is easy to disassemble and assemble, so that the disassembly and assembly is more convenient.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a threading mechanism that is easy to disassemble and assemble, comprising:

[0007] A steering mechanism, which enables the wire electrode to be steered at a preset angle after passing through;

[0008] A clamping and feeding mechanism, used for clamping and feeding the wire electrode forward or backward;

[0009] The mounting arm is provided with a first mounting slot and a second mounting slot. The steering mechanism is detachably disposed in the first mounting slot, and the clamping mechanism is detachably disposed in the second mounting slot.

[0010] Furthermore, the steering mechanism includes a steering assembly and a clamping plate adapted to the steering assembly, the steering assembly includes a rotatable guide wheel, the inner side of the clamping plate is provided with an arc-shaped steering surface adapted to the outer periphery of the guide wheel, the outer periphery of the guide wheel and the steering surface are clamped together to form a steering channel for passing the wire electrode, and the wire electrode achieves steering at a preset angle after passing through the steering channel.

[0011] Furthermore, the first installation slot includes an assembly slot for installing the clamping plate and an assembly hole for installing the steering assembly. The assembly slot is concavely arranged at the end of the installation arm, and the assembly hole passes through the two side end surfaces of the installation arm and is connected to the assembly slot.

[0012] Furthermore, the steering assembly includes a rotating shaft, the guide wheel fixed in the middle of the rotating shaft, and two fixed seats arranged at both ends of the rotating shaft. The outer peripheral end surface of the guide wheel is concavely provided with a circle of grooves, the end of the rotating shaft is connected to the middle of the fixed seat through a bearing, and the fixed seat is detachably arranged in the assembly hole.

[0013] Furthermore, a circle of insulating isolation layer is provided on the end surfaces of both sides of the fixing seat, the outer wall of the guide wheel is provided with an insulating outer sleeve, the outer sleeve is provided with a guide groove adapted to the groove, the turning surface, the guide groove and the groove enclose the turning channel through which the wire electrode can be passed, the outer periphery of the outer sleeve is provided with cylindrical outer end surfaces on both sides of the guide groove, a gap is formed between the outer end surface and the turning surface, and the width of the gap is smaller than the diameter of the wire electrode.

[0014] Furthermore, the clamping mechanism includes a wheel group mounting seat, a driving wheel group, a driven wheel group, a clamping drive motor and a translation drive mechanism, the driving wheel group and the driven wheel group are both arranged in the wheel group mounting seat, the driving wheel group includes a coaxial driving gear and a driving clamping wheel, the driven wheel group includes a coaxial driven gear and a driven clamping wheel, the driving wheel group is connected to the output end of the clamping drive motor, the translation drive mechanism can drive the driving wheel group or the driven wheel group to translate so that the driving gear engages or disengages with the driving gear, when the driving gear engages with the driven gear, the driving clamping wheel and the driven clamping wheel can clamp the wire electrode, the clamping drive motor can rotate the driving gear and the driven gear synchronously in opposite directions, and the driving clamping wheel and the driven clamping wheel rotate synchronously in opposite directions to clamp the wire electrode forward or backward.

[0015] Further, the driving wheel group includes a driving shaft, which is hinged on the wheel group mounting seat, the driving gear and the driving pinch wheel are coaxially arranged on the driving shaft, one end of the driving shaft is connected to the output shaft of the pinch drive motor, and the driven wheel group includes a driven shaft, the driven gear and the driven pinch wheel are coaxially arranged on the driven shaft, and the driven shaft is connected to the translation drive mechanism.

[0016] Furthermore, the second mounting slot includes a motor mounting slot for installing a clamping drive motor, a wheel mounting slot for installing a wheel mounting seat, and a drive mounting slot for installing a translation drive mechanism, and the motor mounting slot and the drive mounting slot are respectively arranged on two side end surfaces opposite to each other of the mounting arm, and the wheel mounting slot is arranged in the mounting arm and its two ends are respectively connected to the motor mounting slot and the drive mounting slot.

[0017] Furthermore, it includes a telescopic docking mechanism, which includes a telescopic mechanism and a telescopic driving mechanism for driving the telescopic mechanism to extend and retract. A wire threading channel capable of passing the wire-like electrode is provided through the telescopic mechanism, and the length of the wire threading channel changes with the extension and retraction of the telescopic mechanism.

[0018] Furthermore, a wire feed channel and a wire outlet channel are respectively provided at both ends of the splint, and the wire feed channel and the wire outlet channel are respectively connected to ports at both ends of the turning channel, the other end of the wire outlet channel is connected to the clamping mechanism, and the other end of the wire feed channel is connected to the wire threading channel.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] By setting the first installation slot and the second installation slot, the steering mechanism and the clamping mechanism can be detachably connected respectively, and the installation of the two mechanisms does not interfere with each other. When a certain mechanism fails, it only needs to disassemble the corresponding mechanism for maintenance, which significantly improves the efficiency of machine maintenance and further improves the production operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the overall structure of the embodiment of the utility model;

[0023] Figure 2This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0024] Figure 3 This is a schematic diagram of the mounting arm structure of an embodiment of the utility model ①;

[0025] Figure 4 This is a schematic diagram of the mounting arm structure of an embodiment of the utility model ②;

[0026] Figure 5 This is a schematic diagram of the steering mechanism structure of an embodiment of the utility model;

[0027] Figure 6 This is a schematic diagram of the structure of a steering assembly according to an embodiment of the utility model;

[0028] Figure 7 Book Figure 6 A partial enlarged schematic diagram of a;

[0029] Figure 8 This is a schematic diagram of the clamping block structure of an embodiment of the utility model;

[0030] Fig. 9 This is a schematic diagram of the structure of the clamping and conveying mechanism of an embodiment of the utility model;

[0031] Explanation of the accompanying drawings: 100-wire electrode; 1-mounting arm; 2-clamping plate; 3-guide wheel; 4-steering surface; 5-assembly groove; 6-assembly hole; 7-rotating shaft; 8-fixed seat; 9-groove; 10-isolating layer; 11-outer sleeve; 12-guide groove; 13-outer end surface; 14-wheel assembly mounting seat; 15-clamping drive motor; 16-translational drive mechanism; 17-driving gear; 18-driving clamping wheel; 19-driven gear; 20-driven clamping wheel; 21-driving rotating shaft; 22-driven rotating shaft; 23-motor mounting groove; 24-wheel assembly mounting groove; 25-driving mounting groove; 26-telescopic docking mechanism; 27-wire inlet channel; 28-wire outlet channel. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0034] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0035] Example: Refer to Figures 1 to 9 The utility model proposes a wire threading mechanism that is easy to disassemble and assemble, including a mounting arm 1, a steering mechanism, a clamping mechanism, and a telescopic docking mechanism 26. The steering mechanism can make the wire electrode 100 turn at a preset angle after passing through. The clamping mechanism is used to clamp the wire electrode 100 forward or backward. The telescopic docking mechanism 26 can complete the construction of the wire threading path by telescoping to achieve automatic wire threading. The mounting arm 1 is provided with a first mounting slot and a second mounting slot. The steering mechanism is detachably arranged in the first mounting slot, and the clamping mechanism is detachably arranged in the second mounting slot.

[0036] Specifically, the steering mechanism includes a steering assembly, a clamping plate 2 adapted to the steering assembly, the steering assembly includes a rotatable guide wheel 3, the inner side of the clamping plate 2 is provided with an arc-shaped steering surface 4 adapted to the outer periphery of the guide wheel 3, the outer periphery of the guide wheel 3 and the steering surface 4 are clamped to form a steering channel for passing the wire electrode 100, and the wire electrode 100 realizes a preset angle of steering after passing through the steering channel. The first installation slot includes an assembly slot 5 for installing the clamping plate 2 and an assembly hole 6 for installing the steering assembly, the assembly slot 5 is concavely arranged at the end of the installation arm 1, and the assembly hole 6 passes through the two side end surfaces of the installation arm 1 and is connected to the assembly slot 5.

[0037] Specifically, the steering assembly includes a rotating shaft 7, the guide wheel 3 fixedly arranged in the middle of the rotating shaft 7, and two fixing seats 8 arranged at both ends of the rotating shaft 7. The outer peripheral end surface of the guide wheel 3 is concavely provided with a circle of grooves 9. The grooves 9 described in this embodiment are preferably V-shaped grooves. The ends of the rotating shaft 7 are connected to the middle of the fixing seat 8 through bearings. The fixing seat 8 is detachably arranged in the assembly hole 6. A circle of insulating isolation layer 10 is provided through the two side end surfaces of the fixing seat 8. The outer wall of the guide wheel 3 is provided with a layer of insulating outer sleeve 11. The outer sleeve 11 is provided with a guide groove 12 adapted thereto at the groove 9. The steering surface 4, the guide groove 12 and the groove 9 enclose the steering channel through which the wire electrode 100 can be passed. The outer periphery of the outer sleeve 11 is provided with cylindrical outer end surfaces 13 on both sides of the guide groove 12. A gap is formed between the outer end surface 13 and the steering surface 4. The width of the gap is smaller than the diameter of the wire electrode 100.

[0038] Specifically, the pinching mechanism includes a wheel assembly mounting seat 14, a driving wheel assembly, a driven wheel assembly, a pinching drive motor 15 and a translation drive mechanism 16. The driving wheel assembly and the driven wheel assembly are both arranged in the wheel assembly mounting seat 14. The driving wheel assembly includes a coaxially arranged driving gear 17 and a driving pinching wheel 18. The driven wheel assembly includes a coaxially arranged driven gear 19 and a driven pinching wheel 20. The driving wheel assembly is connected to the output end of the pinching drive motor 15. The translation drive mechanism 16 can drive The driving wheel group or the driven wheel group translates to make the driving gear 17 engage or disengage with the driving gear 17. When the driving gear 17 engages with the driven gear 19, the driving pinching wheel 18 and the driven pinching wheel 20 can clamp the wire electrode 100. The pinching driving motor 15 can make the driving gear 17 and the driven gear 19 rotate synchronously in the opposite direction. The driving pinching wheel 18 and the driven pinching wheel 20 rotate synchronously in the opposite direction to pinch the wire electrode 100 forward or backward. The driving wheel group includes a driving shaft 21, which is hinged on the wheel group mounting base 14. The driving gear 17 and the driving pinch wheel 18 are coaxially arranged on the driving shaft 21. One end of the driving shaft 21 is connected to the output shaft of the pinch drive motor 15. The driven wheel group includes a driven shaft 22. The driven gear 19 and the driven pinch wheel 20 are coaxially arranged on the driven shaft 22. The driven shaft 22 is connected to the translation drive mechanism 16.

[0039] More specifically, the second mounting slot includes a motor mounting slot 23 for mounting the clamping drive motor 15, a wheel assembly mounting slot 24 for mounting the wheel assembly mounting seat 14, and a drive mounting slot 25 for mounting the translation drive mechanism 16. The motor mounting slot 23 and the drive mounting slot 25 are respectively arranged on the opposite side end surfaces of the mounting arm 1, and the wheel assembly mounting slot 24 is arranged in the mounting arm 1 and its two ends are respectively connected to the motor mounting slot 23 and the drive mounting slot 25.

[0040] More specifically, the telescopic docking mechanism 26 includes a telescopic mechanism and a telescopic driving mechanism for driving the telescopic mechanism to extend and retract. A wire threading channel capable of passing the wire electrode 100 is provided through the telescopic mechanism, and the length of the wire threading channel changes with the extension and retraction of the telescopic mechanism. A wire inlet channel 27 and a wire outlet channel 28 are provided at both ends of the clamping plate 2, respectively. The wire inlet channel 27 and the wire outlet channel 28 are respectively connected to ports at both ends of the turning channel, and the other end of the wire outlet channel 28 is connected to the clamping mechanism, and the other end of the wire inlet channel 27 is connected to the wire threading channel.

[0041] The working principle of this embodiment is as follows:

[0042] When threading the wire, the telescopic docking mechanism 26 builds a threading channel, and the wire electrode 100 enters the wire inlet channel 27 from the threading channel, then passes through the turning channel to complete a 90° turn, and then passes through the wire outlet channel 28 and enters the clamping mechanism to achieve automatic threading;

[0043] During wire cutting, the clamping mechanism clamps and feeds the wire electrode 100 forward or backward to realize reciprocating wire threading, and the guide wheel 3 rotates together. At this time, the isolation layer 10 and the outer cover 11 play an insulating isolation role, realizing the insulation of the wire electrode 100 and the mounting arm 1, thereby realizing automatic wire cutting processing;

[0044] When a blockage or other fault occurs at the steering mechanism, the wire electrode 100 cannot be threaded normally. At this time, it is only necessary to remove the clamping block from the assembly groove 5 for inspection and maintenance. Similarly, when the clamping mechanism fails, it can also be directly removed from the first installation groove. The operation is convenient and quick, and can significantly improve the working efficiency.

[0045] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A threading mechanism that is easy to disassemble and assemble, comprising a mounting arm, characterized in that: include: A steering mechanism, which enables the wire electrode to be steered at a preset angle after passing through; A clamping and feeding mechanism, used for clamping and feeding the wire electrode forward or backward; The mounting arm is provided with a first mounting slot and a second mounting slot. The steering mechanism is detachably disposed in the first mounting slot, and the clamping mechanism is detachably disposed in the second mounting slot.

2. A threading mechanism that is easy to assemble and disassemble as claimed in claim 1, characterized in that: The steering mechanism includes a steering assembly and a clamping plate adapted to the steering assembly. The steering assembly includes a rotatable guide wheel. The inner side of the clamping plate is provided with an arc-shaped steering surface adapted to the outer periphery of the guide wheel. The outer periphery of the guide wheel and the steering surface are clamped together to form a steering channel for passing the wire electrode. After the wire electrode passes through the steering channel, a preset angle of steering is achieved.

3. A threading mechanism that is easy to assemble and disassemble as claimed in claim 2, characterized in that: The first installation slot includes an assembly slot for installing the clamping plate and an assembly hole for installing the steering assembly. The assembly slot is concavely arranged at the end of the installation arm, and the assembly hole passes through the two side end surfaces of the installation arm and is connected to the assembly slot.

4. A threading mechanism that is easy to assemble and disassemble as claimed in claim 3, characterized in that: The steering assembly includes a rotating shaft, the guide wheel fixed in the middle of the rotating shaft, and two fixed seats arranged at both ends of the rotating shaft. The outer end surface of the guide wheel is concavely provided with a circle of grooves. The end of the rotating shaft is connected to the middle of the fixed seat through a bearing. The fixed seat is detachably arranged in the assembly hole.

5. A threading mechanism that is easy to assemble and disassemble as claimed in claim 4, characterized in that: An insulating isolation layer is provided on both side end surfaces of the fixing seat, an insulating outer sleeve is provided on the outer wall of the guide wheel, and a guide groove adapted to the outer sleeve is provided at the groove. The steering surface, the guide groove and the groove enclose the steering channel through which the wire electrode can be passed, and cylindrical outer end surfaces are provided on the outer periphery of the outer sleeve on both sides of the guide groove, a gap is formed between the outer end surface and the steering surface, and the width of the gap is smaller than the diameter of the wire electrode.

6. A threading mechanism that is easy to assemble and disassemble as claimed in claim 1, characterized in that: The clamping mechanism includes a wheel group mounting seat, a driving wheel group, a driven wheel group, a clamping drive motor and a translation drive mechanism. The driving wheel group and the driven wheel group are both arranged in the wheel group mounting seat. The driving wheel group includes a coaxial driving gear and a driving clamping wheel. The driven wheel group includes a coaxial driven gear and a driven clamping wheel. The driving wheel group is connected to the output end of the clamping drive motor. The translation drive mechanism can drive the driving wheel group or the driven wheel group to translate so that the driving gear is engaged or disengaged with the driving gear. When the driving gear is engaged with the driven gear, the driving clamping wheel and the driven clamping wheel can clamp the wire electrode. The clamping drive motor can rotate the driving gear and the driven gear synchronously in opposite directions. The driving clamping wheel and the driven clamping wheel rotate synchronously in opposite directions to clamp the wire electrode forward or backward.

7. A threading mechanism that is easy to assemble and disassemble as claimed in claim 6, characterized in that: The driving wheel group includes a driving shaft, which is hinged on the wheel group mounting seat, the driving gear and the driving pinch wheel are coaxially arranged on the driving shaft, one end of the driving shaft is connected to the output shaft of the pinch drive motor, and the driven wheel group includes a driven shaft, the driven gear and the driven pinch wheel are coaxially arranged on the driven shaft, and the driven shaft is connected to the translation drive mechanism.

8. The wire threading mechanism that is easy to assemble and disassemble as claimed in claim 6, characterized in that: The second mounting slot includes a motor mounting slot for mounting a clamping drive motor, a wheel mounting slot for mounting a wheel mounting seat, and a drive mounting slot for mounting a translation drive mechanism. The motor mounting slot and the drive mounting slot are respectively arranged on the opposite side end surfaces of the mounting arm, and the wheel mounting slot is arranged in the mounting arm and its two ends are respectively connected to the motor mounting slot and the drive mounting slot.

9. A threading mechanism that is easy to assemble and disassemble as claimed in any one of claims 2 to 5, characterized in that: The telescopic docking mechanism comprises a telescopic mechanism and a telescopic driving mechanism for driving the telescopic mechanism to extend and retract. A wire threading channel capable of passing a wire-shaped electrode is provided through the telescopic mechanism, and the length of the wire threading channel changes with the extension and retraction of the telescopic mechanism.

10. The wire threading mechanism that is easy to assemble and disassemble as claimed in claim 9, characterized in that: A wire inlet channel and a wire outlet channel are respectively provided at both ends of the splint, and the wire inlet channel and the wire outlet channel are respectively connected to the ports at both ends of the turning channel, the other end of the wire outlet channel is connected to the clamping mechanism, and the other end of the wire inlet channel is connected to the wire threading channel.

Images