Wire guide mechanism for linear cutting machine tool

Abstract

The invention discloses a wire guide mechanism for a linear cutting machine, and belongs to the technical field of wire guide mechanisms, the wire guide mechanism comprises a support frame, a longitudinal inclination adjusting mechanism, a transverse limiting mechanism and a transverse inclination adjusting mechanism, the inner side of the support frame is provided with a wire releasing wheel and a wire collecting wheel from top to bottom; an upper supporting plate and a lower supporting plate which are parallel to each other are connected to the upper end and the lower end of the supporting frame respectively, main guide rollers are arranged at the ends, connected with the supporting frame, of the upper supporting plate and the lower supporting plate respectively, longitudinal inclination adjusting mechanisms are arranged on the upper supporting plate and the lower supporting plate respectively, and supporting strips are connected to the longitudinal inclination adjusting mechanisms. Transition guide frames are mounted at the ends, close to the main guide rollers, of the upper surfaces of the supporting strips. According to the metal wire cutting device, the cutting part of a metal wire can be adjusted at will in the longitudinal direction and can also be adjusted in the transverse direction, and therefore adaptive adjustment can be conducted according to the cutting requirement.

Description

Technical Field

[0001] The invention relates to the technical field of wire guide mechanisms, in particular to a wire guide mechanism for a wire cutting machine tool. Background Art

[0002] In the early mechanical processing field, for cutting of some complex shapes, especially high-precision contour cutting, traditional mechanical cutting methods such as turning and milling can hardly meet the requirements. With the development of EDM technology, wire cutting machine tools came into being. EDM is based on the electro-erosion phenomenon caused by pulse discharge between the electrode and the workpiece to remove materials. The wire cutting machine tool uses a continuously moving metal wire as a tool electrode and applies a pulse voltage between the workpiece and the electrode wire. When the distance between the electrode wire and the workpiece reaches a certain degree, spark discharge will be generated to erode the workpiece material. As a key component of the wire cutting machine, the wire guide mechanism plays the role of high-speed wire cutting; The existing wire guide mechanism for wire cutting machine tools still has the following technical problems when in use, such as: 1. When the existing wire guide mechanism for wire cutting machine tools is in use, the metal wire at the cutting part can only be adjusted in the longitudinal direction, and when adjusting, the upper and lower ends of the metal wire at the cutting part can only be moved the same distance in opposite longitudinal directions, which makes it subject to certain restrictions when adjusting the angle in the longitudinal direction. For example, the upper and lower ends of the metal wire at the cutting part need to be moved horizontally by different distances, which makes it impossible for the existing wire guide mechanism for wire cutting machine tools to arbitrarily adjust the angle in the longitudinal direction; 2. When the existing wire guide mechanism for wire cutting machine tools is in use, the metal wire at the cutting part cannot be adjusted in the horizontal direction, which makes it impossible to adjust the metal wire cutting part to form a certain angle with the horizontal direction and the longitudinal direction respectively, and thus cannot meet some special cutting requirements; Therefore, a wire guide mechanism for a wire cutting machine is needed to solve the above problems. Summary of the invention

[0003] The object of the present invention is to provide a wire guide mechanism for a wire cutting machine tool to solve the problem in the above background technology that the metal wire cutting part on the existing wire guide mechanism for a wire cutting machine tool cannot be adjusted arbitrarily in the longitudinal direction and is not convenient to adjust in the lateral direction.

[0004] To achieve the above object, the present invention provides the following technical solutions: The lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of

[0005] Preferably, the longitudinal tilt adjustment mechanism includes a lateral support plate, a hinge and a connecting block, the lateral support plates are arranged on the front and rear sides of the support frame, and a lateral adjustment screw is connected to the bearing between the two lateral support plates, one end of the lateral adjustment screw is passed through the corresponding lateral support plate, and the lateral adjustment screw thread passes through the two toggle frames, each of the toggle frames is provided with a secondary guide roller, and the upper end of the upper toggle frame and the lower end of the lower toggle frame are respectively movably penetrated by the corresponding limit shafts, and the two limit shafts are respectively fixedly connected to the upper support plate The upper end of the upper toggle frame and the lower end of the lower toggle frame are axially connected to the corresponding one end of the support bar through a hinge, and the support bar movably passes through the corresponding connecting block, the connecting block bearing is connected to the corresponding surface of the movable frame, and the movable frame is threadedly penetrated by the corresponding screw rod, the screw rod is arranged on the lower surface of the upper support plate and the upper surface of the lower support plate, and the two screw rods are respectively connected to the bearings of the upper support plate and the lower support plate, and one end of the two screw rods respectively passes through the upper support plate and the lower support plate away from the support frame.

[0006] Preferably, the lateral adjustment screw rod is provided with two sections of threads with opposite rotation directions, and the two sections of threads are symmetrically arranged with respect to the mid-vertical plane of the lateral adjustment screw rod.

[0007] Preferably, the support bar is a U-shaped structure, which facilitates its movement through the connecting block.

[0008] Preferably, the two limit shafts are symmetrically arranged about the axis of the transverse adjustment screw, and the ends of the two toggle frames penetrated by the transverse adjustment screw thread are symmetrical about the mid-perpendicular center of the transverse adjustment screw, so that the ends of the two toggle frames penetrated by the transverse adjustment screw thread are complementary, so that after the two toggle frames come into contact with the ends of the transverse adjustment screw thread, the remaining parts of the two toggle frames can be symmetrical about the axis of the transverse adjustment screw, which helps the two support bars to be parallel to each other at this time.

[0009] Preferably, the lateral limiting mechanism includes a strip groove and a slider, the lower end bearing of the movable guide frame is connected to the upper surface of the slider, and the slider is snap-fitted and slidably connected to the strip groove, the strip groove is opened on the surface of the support bar, and limiting rods are arranged on both sides of the movable guide frame, and the outer side of each limiting rod is nested and connected with a limiting tube, and each of the limiting tubes is fixedly connected to the corresponding connecting plate.

[0010] Preferably, the longitudinal section of the sliding block is an I-shaped structure, and its axis is colinear with the axis of the movable guide frame.

[0011] Preferably, the lateral inclination adjustment mechanism includes a slide groove, a longitudinal adjustment screw rod and a limit block, the slide groove is arranged on the lower surface of the upper support plate and the upper surface of the lower support plate, and a corresponding connecting plate is slidably connected in each slide groove, the connecting plate is provided with an inclined groove running through both sides thereof, and the corresponding two inclined grooves are respectively movably penetrated by the two ends of the corresponding driving crankshaft, the lower surface of the upper support plate and the upper surface of the lower support plate are fixedly connected with the limit block, and the driving crankshaft is engaged and slid in the corresponding limit block, the lower surface of the upper support plate and the upper surface of the lower support plate are both bearing-connected with the longitudinal adjustment screw rod, and the longitudinal adjustment screw rod thread passes through the middle part of the corresponding driving crankshaft.

[0012] Preferably, the limiting block is a U-shaped structure, which is used to limit the driving crankshaft to prevent it from rotating.

[0013] Preferably, the moving range of the two driving crankshafts is between the minimum distance between the two support bars, so as to prevent the driving crankshaft from moving in the vertical direction and hindering the rotation of the support bars.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the cutting position of the metal wire on the wire guide mechanism for the wire cutting machine can be adjusted arbitrarily not only in the longitudinal direction but also in the transverse direction, so that it can be adaptively adjusted according to the cutting requirements: 1. By rotating the horizontal adjustment screw rod, the two toggle racks on it can move in opposite directions respectively, and then one end of the two support bars can be toggled respectively, so that the support bars rotate with the movable rack as the axis. Then, by rotating the screw rod, the position of the movable rack can be adjusted, and then the longitudinal position of the two ends of the wire cutting part can be adjusted arbitrarily, which helps to improve the cutting flexibility; 2. By rotating the longitudinal adjustment screw, the driving crankshaft moves in the vertical direction under the limiting action of the limiting block. By moving the driving crankshaft, the inclined groove drives the connecting plate to move, thereby changing the lateral position of both ends of the wire cutting part, which helps to arbitrarily adjust the wire cutting part according to cutting requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 For the present invention Figure 1 A schematic diagram of the enlarged structure of point A; Figure 3 It is a schematic diagram of the transverse cross-sectional structure of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure of point B in the middle; Figure 5 It is a longitudinal cross-sectional structural schematic diagram of the present invention; Figure 6 This is a schematic diagram of the connection structure of two support bars of the present invention; Figure 7 It is a partial cross-sectional structural schematic diagram of the present invention; Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure at point C in the middle.

[0016] In the figure: 1. support frame; 2. wire release wheel; 3. wire collection wheel; 4. lateral support plate; 5. lateral adjustment screw rod; 6. upper support plate; 7. lower support plate; 8. screw rod; 9. slide groove; 10. connecting plate; 11. inclined groove; 12. driving crankshaft; 13. longitudinal adjustment screw rod; 14. limit block; 15. limit tube; 16. limit rod; 17. movable guide frame; 18. movable frame; 19. support bar; 20. strip groove; 21. fixed guide frame; 22. main guide roller; 23. toggle frame; 24. secondary guide roller; 25. limit shaft; 26. hinge; 27. transition guide frame; 28. connecting block; 29. ​​conductor; 30. slider. DETAILED DESCRIPTION

[0017] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-Figure 8 , the present invention provides the following technical solutions: Embodiment 1: In order to solve the problem that the wire cutting part on the wire guide mechanism used for wire cutting machine tools in the past cannot be arbitrarily adjusted in the longitudinal direction, the following technical solution is provided, specifically, a wire guide mechanism for wire cutting machine tools, including a support frame 1, a longitudinal tilt adjustment mechanism, a transverse limit mechanism and a transverse tilt adjustment mechanism, the inner side of the support frame 1 is respectively installed with a wire release wheel 2 and a wire collection wheel 3 from top to bottom, and the upper and lower ends of the support frame 1 are respectively connected with an upper support plate 6 and a lower support plate 7 parallel to each other, the upper support plate 6 and the lower support plate 7 The ends connected to the support frame 1 are each provided with a main guide roller 22, and the upper support plate 6 and the lower support plate 7 are each provided with a longitudinal tilt adjustment mechanism, the longitudinal tilt adjustment mechanism is connected to a support bar 19, and a transition guide frame 27 is installed at one end of the upper surface of the support bar 19 close to the main guide roller 22, a lateral limiting mechanism is provided at the other end of the support bar 19, and a movable guide frame 17 is connected to the lateral limiting mechanism, a fixed guide frame 21 is evenly installed on the upper surface of the middle part of the support bar 19, and a conductor 29 is also installed on the upper surface of the middle part of the support bar 19.

[0019] The longitudinal tilt adjustment mechanism includes a lateral support plate 4, a hinge 26 and a connecting block 28. The lateral support plate 4 is arranged on the front and rear sides of the support frame 1, and a lateral adjustment screw rod 5 is connected to the bearing between the two lateral support plates 4. The bearing at one end of the lateral adjustment screw rod 5 passes through the corresponding lateral support plate 4, and the lateral adjustment screw rod 5 threadedly passes through the two toggle frames 23. Each toggle frame 23 is provided with a secondary guide roller 24, and the upper end of the upper toggle frame 23 and the lower end of the lower toggle frame 23 are respectively movably penetrated by the corresponding limit shaft 25. The two limit shafts 25 are respectively fixedly connected to the lower surface of the upper support plate 6 and the upper surface of the lower support plate 7. The upper end of the upper toggle frame 23 and the lower end of the lower toggle frame 23 are connected to one end of the corresponding support bar 19 through the hinge 26. The movable frame 18 is connected with the shaft, and the support bar 19 movably passes through the corresponding connecting block 28, the connecting block 28 is bearing-connected to the corresponding surface of the movable frame 18, and the movable frame 18 is threadedly penetrated by the corresponding screw rod 8, the screw rod 8 is arranged on the lower surface of the upper support plate 6 and the upper surface of the lower support plate 7, and the two screw rods 8 are respectively bearing-connected with the upper support plate 6 and the lower support plate 7, and one end of the two screw rods 8 respectively passes through the upper support plate 6 and the lower support plate 7 away from the end of the support frame 1. When in use, the lateral adjustment screw rod 5 is rotated, and the two toggle frames 23 threadedly connected on the lateral adjustment screw rod 5 will move in opposite directions. In the process of moving the toggle frame 23, the support bar 19 will be driven to rotate with the movable frame 18 as the axis through the hinge 26, and then the screw rod 8 is rotated. The screw rod 8 moves during the rotation. During the process, the movable frame 18 threadedly connected thereon will be driven to move. After the movable frame 18 moves, the distance between the movable frame 18 and the two ends of the support bar 19 will change, thereby changing the rotation angle of the support bar 19. By changing the rotation angle of the support bar 19, the positions of the two ends of the wire cutting part can be directly adjusted, so that it can be arbitrarily adjusted in the longitudinal direction, which is helpful for adaptive adjustment according to cutting needs. The transverse adjustment screw rod 5 is provided with two sections of threads with opposite rotation directions, and the two sections of threads are symmetrically arranged about the mid-vertical plane of the transverse adjustment screw rod 5. The support bar 19 is a bar-shaped U-shaped structure, which is convenient for its movement through the connecting block 28. The two limit shafts 25 are symmetrically arranged about the axis of the transverse adjustment screw rod 5, and the two toggle frames 23 are adjusted by the transverse adjustment screw rod. The ends through which the threads penetrate are symmetrical about the mid-vertical center of the lateral adjustment screw rod 5, so that the two toggle frames 23 are complemented by the ends through which the threads penetrate the lateral adjustment screw rod 5, so that after the two toggle frames 23 contact the ends through which the threads penetrate the lateral adjustment screw rod 5, the remaining parts of the two toggle frames 23 can be symmetrical about the axis of the lateral adjustment screw rod 5, which helps the two support bars 19 to be parallel to each other at this time. The lateral limiting mechanism includes a strip groove 20 and a slider 30. The lower end bearing of the movable guide frame 17 is connected to the upper surface of the slider 30, and the slider 30 is slidably connected to the strip groove 20 in a snap-fitting manner. The strip groove 20 is opened on the surface of the support bar 19. Limit rods 16 are arranged on both sides of the movable guide frame 17, and the outer side of each limit rod 16 is nested and connected to the limit tube 15.Each limiting tube 15 is fixedly connected to the corresponding connecting plate 10. The longitudinal section of the slider 30 is an I-shaped structure, and its axis is colinear with the axis of the movable guide frame 17.

[0020] Embodiment 2: In order to solve the problem that the wire cutting part on the wire guide mechanism of the wire cutting machine tool cannot be adjusted in the lateral direction, the following technical solution is provided, specifically, the lateral limit mechanism is also connected to the lateral tilt adjustment mechanism.

[0021] The lateral tilt adjustment mechanism includes a slide groove 9, a longitudinal adjustment screw rod 13 and a limit block 14. The slide groove 9 is arranged on the lower surface of the upper support plate 6 and the upper surface of the lower support plate 7, and each slide groove 9 is slidably connected with a corresponding connecting plate 10. The connecting plate 10 is provided with an inclined groove 11 running through both sides thereof, and the corresponding two inclined grooves 11 are respectively movably penetrated by the two ends of the corresponding driving crankshaft 12. The lower surface of the upper support plate 6 and the upper surface of the lower support plate 7 are fixedly connected with the limit block 14, and the driving crankshaft 12 is engaged and slidable in the corresponding limit block 14. The lower surface of the upper support plate 6 and the upper surface of the lower support plate 7 are both bearing-connected with the longitudinal adjustment screw rod 13, and the longitudinal adjustment screw rod 13 threadedly runs through the middle part of the corresponding driving crankshaft 12. When in use, the longitudinal adjustment is rotated The screw rod 13, under the limiting action of the limiting block 14, the driving crankshaft 12 can only move in the vertical direction. During the movement of the driving crankshaft 12, the connecting plate 10 will be driven to move through the inclined groove 11. Through the movement of the connecting plate 10, the movable guide frame 17 can be moved in the horizontal direction. By changing the positions of the two ends of the wire cutting part in the horizontal direction, the wire cutting part can be adjusted to a non-vertical situation with the horizontal direction, which helps to meet some special cutting requirements. The limiting block 14 is a U-shaped structure, which is used to limit the driving crankshaft 12 to prevent it from rotating. The moving range of the two driving crankshafts 12 is between the minimum distance between the two support bars 19, which prevents the driving crankshaft 12 from moving in the vertical direction and hindering the rotation of the support bar 19.

[0022] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wire guide mechanism for a wire cutting machine tool, comprising a support frame (1), a longitudinal tilt adjustment mechanism, a lateral limit mechanism and a lateral tilt adjustment mechanism, characterized in that: A wire unwinding wheel (2) and a wire collecting wheel (3) are respectively installed on the inner side of the support frame (1) from top to bottom, and the upper and lower ends of the support frame (1) are respectively connected to an upper support plate (6) and a lower support plate (7) which are parallel to each other, and the ends of the upper support plate (6) and the lower support plate (7) connected to the support frame (1) are both provided with main guide rollers (22), and the upper support plate (6) and the lower support plate (7) are both provided with longitudinal tilt adjustment mechanisms, the longitudinal tilt adjustment mechanisms are connected to a support bar (19), and a transition guide frame (27) is installed at one end of the upper surface of the support bar (19) close to the main guide roller (22), the other end of the support bar (19) is provided with a transverse limiting mechanism, and the transverse limiting mechanism is connected to a movable guide frame (17), the upper surface of the middle part of the support bar (19) is evenly provided with a fixed guide frame (21), and the upper surface of the middle part of the support bar (19) is also provided with a conductor (29), and the transverse limiting mechanism is also connected to the transverse tilt adjustment mechanism.

2. A wire guide mechanism for a wire cutting machine tool according to claim 1, characterized in that: The longitudinal tilt adjustment mechanism comprises a lateral support plate (4), a hinge (26) and a connecting block (28); the lateral support plate (4) is arranged on the front and rear sides of the support frame (1); and a lateral adjustment screw rod (5) is connected to the bearing between the two lateral support plates (4); one end of the lateral adjustment screw rod (5) is bearing-pierced through the corresponding lateral support plate (4); and the lateral adjustment screw rod (5) is threadedly penetrated through the two toggle frames (23); each of the toggle frames (23) is provided with a secondary guide roller (24); and the upper end of the upper toggle frame (23) and the lower end of the lower toggle frame (23) are respectively movably penetrated by corresponding limit shafts (25); and the two limit shafts (25) are respectively fixedly connected to the lower surface and the lower surface of the upper support plate (6). The upper surface of the support plate (7), the upper end of the upper toggle frame (23) and the lower end of the lower toggle frame (23) are both axially connected to one end of the corresponding support bar (19) through a hinge (26), and the support bar (19) movably passes through the corresponding connecting block (28), the connecting block (28) is bearing-connected to the surface of the corresponding movable frame (18), and the movable frame (18) is threadedly penetrated by the corresponding screw rod (8), the screw rod (8) is arranged on the lower surface of the upper support plate (6) and the upper surface of the lower support plate (7), and the two screw rods (8) are respectively bearing-connected to the upper support plate (6) and the lower support plate (7), and one end of the two screw rods (8) is respectively bearing-passed through one end of the upper support plate (6) and the lower support plate (7) away from the support frame (1).

3. A wire guide mechanism for a wire cutting machine tool according to claim 2, characterized in that: The transverse adjustment screw rod (5) is provided with two sections of threads with opposite rotation directions, and the two sections of threads are symmetrically arranged with respect to the mid-vertical plane of the transverse adjustment screw rod (5).

4. A wire guide mechanism for a wire cutting machine tool according to claim 3, characterized in that: The support bar (19) is a bar-shaped structure in the shape of a Chinese character “U”, which facilitates its movement through the connecting block (28).

5. A wire guide mechanism for a wire cutting machine tool according to claim 4, characterized in that: The two limit shafts (25) are symmetrically arranged about the axis of the transverse adjustment screw (5), and the ends of the two toggle frames (23) through which the transverse adjustment screw (5) is threaded are symmetrical about the center of the perpendicular bisector of the transverse adjustment screw (5), so that the ends of the two toggle frames (23) through which the transverse adjustment screw (5) is threaded are complementary, so that after the two toggle frames (23) are in contact with the ends through which the transverse adjustment screw (5) is threaded, the remaining parts of the two toggle frames (23) can be symmetrical about the axis of the transverse adjustment screw (5), which helps the two support bars (19) to be parallel to each other at this time.

6. A wire guide mechanism for a wire cutting machine tool according to claim 5, characterized in that: The transverse limiting mechanism comprises a strip groove (20) and a slider (30); a bearing at the lower end of the movable guide frame (17) is connected to the upper surface of the slider (30); and the slider (30) is slidably connected to the strip groove (20); the strip groove (20) is formed on the surface of the support bar (19); limiting rods (16) are provided on both sides of the movable guide frame (17); and the outer side of each limiting rod (16) is nested and connected to a limiting tube (15); and each limiting tube (15) is fixedly connected to a corresponding connecting plate (10).

7. A wire guide mechanism for a wire cutting machine tool according to claim 6, characterized in that: The longitudinal section of the sliding block (30) is an I-shaped structure, and its axis is colinear with the axis of the movable guide frame (17).

8. The wire guide mechanism for a wire cutting machine tool according to claim 7, characterized in that: The transverse tilt adjustment mechanism comprises a slide groove (9), a longitudinal adjustment screw rod (13) and a limit block (14); the slide groove (9) is provided on the lower surface of the upper support plate (6) and the upper surface of the lower support plate (7); and a corresponding connecting plate (10) is slidably connected in each slide groove (9); the connecting plate (10) is provided with an inclined groove (11) penetrating through both sides thereof, and the two corresponding inclined grooves (11) are respectively movably penetrated by the two ends of the corresponding driving crankshaft (12); the lower surface of the upper support plate (6) and the upper surface of the lower support plate (7) are fixedly connected to the limit block (14), and the driving crankshaft (12) is engaged and slidably engaged in the corresponding limit block (14); the lower surface of the upper support plate (6) and the upper surface of the lower support plate (7) are bearing-connected with the longitudinal adjustment screw rod (13), and the longitudinal adjustment screw rod (13) is threadedly penetrated through the middle of the corresponding driving crankshaft (12).

9. A wire guide mechanism for a wire cutting machine tool according to claim 8, characterized in that: The limiting block (14) is a U-shaped structure and is used to limit the driving crankshaft (12) to prevent the driving crankshaft (12) from rotating.

10. A wire guide mechanism for a wire cutting machine tool according to claim 9, characterized in that: The moving range of the two driving crankshafts (12) is within the minimum distance between the two support bars (19), thereby preventing the driving crankshaft (12) from moving in the vertical direction and hindering the rotation of the support bar (19).

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