Wire conveying mechanism of wire cut electric discharge machine

Abstract

The wire conveying mechanism of the wire cut electric discharge machine comprises a supporting plate, a motor is fixedly connected to the outer surface of the supporting plate, a wire storage barrel is fixedly connected to the output end of the motor, an electrode wire is arranged on the outer surface of the wire storage barrel, a first guide wheel is arranged on the side, away from the wire storage barrel, of the supporting plate, and a second guide wheel is arranged on the side, away from the wire storage barrel, of the supporting plate. A bidirectional shaft motor is fixedly connected to the outer surface of the supporting plate, threaded rods are fixedly connected to the output ends of the two sides of the bidirectional shaft motor, fixing blocks are rotationally connected to the two ends of each threaded rod, and the outer surfaces of the fixing blocks are fixedly connected with the supporting plate. The second gears are arranged on the two sides of the first gear, after the second gears are meshed with the first gear, the second guide wheels and the second connecting rods can be driven to rotate in the opposite directions at the same time, the tensioning wheels are driven to swing towards the middle or move outwards at the same time, and therefore the tension of the electrode wire can be adjusted; and the use convenience of the device is improved, and the cutting precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric spark wire cutting machines, in particular to a wire conveying mechanism of an electric spark wire cutting machine. Background Art

[0002] The wire-cut EDM machine uses the electro-erosion effect generated by the electric spark pulse discharge between the electrode wire and the workpiece in the working fluid to perform wire cutting. Since the length of the single-layer wound electrode wire on the wire storage drum is limited, the wire storage drum needs to be frequently reciprocated in the forward and reverse directions to maintain long-term continuous EDM wire cutting.

[0003] A wire conveying mechanism of an electric spark wire cutting machine disclosed in the Chinese utility model patent application disclosure specification CN203316860U has a motor arranged in a drum to form an internally driven wire storage drum, and the motor shaft and the drum shaft are connected by a central shaft, so there is one less coupling, and thus one less misalignment, thereby reducing equipment vibration; at the same time, the internally driven wire storage drum in the utility model directly pushes the wire unwinding rack through a synchronous belt transmission device, so the structure is more reasonable. Therefore, compared with the prior art, the utility model has substantial characteristics and progress, but the wire conveying mechanism of the existing electric spark wire cutting machine has a relatively simple structure, and is prone to loosening during the transportation of the electrode wire, and the tension of the electrode wire needs to be adjusted, otherwise it will affect the subsequent accuracy of the electrode wire cutting, and the overall convenience of use is poor. Utility Model Content

[0004] The utility model aims to provide a wire feeding mechanism for an electric spark wire cutting machine to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a wire feeding mechanism of an electric spark wire cutting machine, comprising:

[0006] A support plate, wherein the outer surface of the support plate is fixedly connected to a motor, the output end of the motor is fixedly connected to a wire storage drum, the outer surface of the wire storage drum is provided with an electrode wire, a side of the support plate away from the wire storage drum is provided with a first guide wheel, the outer surface of the support plate is fixedly connected to a bidirectional shaft motor, the output ends on both sides of the bidirectional shaft motor are fixedly connected to threaded rods, both ends of the threaded rods are rotatably connected to fixed blocks, and the outer surface of the fixed block is fixedly connected to the support plate;

[0007] The outer surface of the threaded rod is threadedly connected to a sliding block, the outer surface of the sliding block is slidably connected to the support plate, the outer surface of the sliding block is rotatably connected to a first connecting rod, and one end of the first connecting rod away from the sliding block is rotatably connected to a first gear;

[0008] The outer surface of the first gear is meshedly connected with the second gear, and the second gear is provided with two groups. The outer surface of the second gear is fixedly connected with a rotating shaft, and the outer surface of the rotating shaft is rotatably connected to the support plate. The end of the rotating shaft away from the second gear is fixedly connected to the second guide wheel, and the outer surface of the second guide wheel is fixedly connected to a second connecting rod, and the side of the second connecting rod away from the second guide wheel is fixedly connected to a tensioning wheel, the outer surface of the tensioning wheel is slidably connected to the support plate, and the outer surface of the tensioning wheel is movably connected to the electrode wire.

[0009] Preferably, the output end of the motor is fixedly connected with a rotating disk.

[0010] Preferably, the side surface of the rotating disk is rotatably connected to the support plate, and the motor can drive the rotating disk to rotate.

[0011] Preferably, the outer surface of the rotating disk is provided with a thread groove to facilitate the limiting of the thread block, and the inside of the wire storage tube is rotatably connected with a rotating block.

[0012] Preferably, the outer surface of the rotating block is fixedly connected to a limiting block, and the limiting block is convenient for limiting the position of the rotating block to prevent the rotating block from being separated from the wire storage tube.

[0013] Preferably, a threaded block is fixedly connected to a side of the limiting block away from the rotating block, and an outer surface of the threaded block is threadedly connected to the thread groove, so as to facilitate rapid installation and replacement of the wire storage tube.

[0014] Preferably, the motor and the bidirectional axis motor are both connected to an external power source.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] (1) The wire feeding mechanism of the electric spark wire cutting machine is provided with a second gear on both sides of the first gear. After the second gear is meshed with the first gear, it can drive the two sets of second guide wheels and the second connecting rod to rotate in opposite directions at the same time, and drive the tension wheel to swing toward the middle or move outward at the same time, so as to adjust the tension of the electrode wire, increase the convenience of using the device, and improve the cutting accuracy;

[0017] (2) The wire transport mechanism of this type of electric spark wire cutting machine has a rotating disk arranged at the connection between the wire storage barrel and the motor. The wire storage barrel can be quickly installed and replaced by utilizing the connection between the threaded block and the threaded groove. The limit block can limit the rotating block to prevent the rotating block from being separated from the wire storage barrel, thereby increasing the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2It is a rear view structural schematic diagram of the utility model;

[0020] Figure 3 It is a partial structural schematic diagram of the utility model;

[0021] Figure 4 It is a schematic diagram of the connection structure between the wire storage drum and the rotating disk of the utility model.

[0022] In the figure: 1. support plate; 2. motor; 3. wire storage drum; 4. first guide wheel; 5. bidirectional shaft motor; 6. threaded rod; 7. fixed block; 8. sliding block; 9. first connecting rod; 10. first gear; 11. second gear; 12. rotating shaft; 13. second guide wheel; 14. second connecting rod; 15. tensioning wheel; 16. rotating disk; 17. threaded groove; 18. rotating block; 19. limit block; 20. threaded block; 21. electrode wire. DETAILED DESCRIPTION

[0023] 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. Based on the embodiments in 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.

[0024] See also Figure 1-4 The utility model provides an embodiment: a wire transport mechanism of an electric spark wire cutting machine, including a support plate 1, a motor 2 is fixedly connected to the outer surface of the support plate 1, a wire storage drum 3 is fixedly connected to the output end of the motor 2, the wire storage drum 3 can rotate to transport the electrode wire 21, the outer surface of the wire storage drum 3 is provided with the electrode wire 21, and a first guide wheel 4 is provided on the side of the support plate 1 away from the wire storage drum 3.

[0025] A bidirectional shaft motor 5 is fixedly connected to the outer surface of the support plate 1, and the bidirectional shaft motor 5 is located on the back of the support plate 1. The output ends on both sides of the bidirectional shaft motor 5 are fixedly connected to threaded rods 6. The threads on the surfaces of the two threaded rods 6 are in opposite directions. Fixed blocks 7 are rotatably connected to the two ends of the threaded rods 6, and the outer surface of the fixed block 7 is fixedly connected to the support plate 1.

[0026] The outer surface of the threaded rod 6 is threadedly connected to a sliding block 8. The rotation of the threaded rod 6 can drive the two sliding blocks 8 to move in opposite directions together. The outer surface of the sliding block 8 is slidably connected to the support plate 1, which can limit the sliding block 8 so that it can only move in parallel but cannot rotate. The outer surface of the sliding block 8 is rotatably connected to a first connecting rod 9, and the end of the first connecting rod 9 away from the sliding block 8 is rotatably connected to a first gear 10. The movement of the two first connecting rods 9 together can drive the first gear 10 to swing back and forth.

[0027] The outer surface of the first gear 10 is meshedly connected with the second gear 11. The rotation of the first gear 10 can drive the two groups of second gears 11 to rotate in opposite directions at the same time, thereby driving the two groups of tensioning wheels 15 to adjust the tension of the electrode wire 21 at the same time. The second gear 11 is provided with two groups, which are located on the upper and lower sides of the first gear 10. The outer surface of the second gear 11 is fixedly connected with the rotating shaft 12, and the outer surface of the rotating shaft 12 is rotatably connected to the support plate 1. The end of the rotating shaft 12 away from the second gear 11 is fixedly connected with the second guide wheel 13, which is convenient for limiting the electrode wire 21. The outer surface of the second guide wheel 13 is fixedly connected with the second connecting rod 14, and the side of the second connecting rod 14 away from the second guide wheel 13 is fixedly connected with the tensioning wheel 15. The tensioning wheel 15 can swing up and down following the rotation of the second guide wheel 13, thereby driving the electrode wire 21 to adjust the tension. The outer surface of the tensioning wheel 15 is slidably connected to the support plate 1, and the tensioning wheel 15 can be driven by the second connecting rod 14 to swing up and down, and the outer surface of the tensioning wheel 15 is movably connected to the electrode wire 21.

[0028] The output end of the motor 2 is fixedly connected with a rotating disk 16, and the side surface of the rotating disk 16 is rotatably connected to the support plate 1. The motor 2 can drive the rotating disk 16 to rotate. The outer surface of the rotating disk 16 is provided with a thread groove 17 to facilitate the limiting of the thread block 20.

[0029] The wire storage tube 3 is internally rotatably connected with a rotating block 18, and the outer surface of the rotating block 18 is fixedly connected with a limiting block 19. The limiting block 19 is convenient for limiting the rotating block 18 to prevent the rotating block 18 from being separated from the wire storage tube 3. The side of the limiting block 19 away from the rotating block 18 is fixedly connected with a threaded block 20, and the outer surface of the threaded block 20 is threadedly connected to the thread groove 17, which is convenient for quick installation and replacement of the wire storage tube 3. The motor 2 and the bidirectional shaft motor 5 are both connected to an external power supply.

[0030] When the embodiment of the present application is in use: when in use, the motor 2 is started to drive the wire storage tube 3 to rotate, so that the electrode wire 21 slides on the surface of the wire storage tube 3, the first guide wheel 4, the second guide wheel 13 and the second connecting rod 14. When the tension of the electrode wire 21 needs to be adjusted, the bidirectional axis motor 5 is started to drive the threaded rods 6 on both sides to rotate, so that the threaded rods 6 drive the sliding blocks 8 to move in opposite directions at the same time, and drive the first gear 10 to rotate back and forth. When the first gear 10 rotates, it engages with the second gear 11, driving the two groups of second gears 11 to rotate in opposite directions at the same time, so that the second guide wheel 13 and the second connecting rod 14 rotate together, and drive the tensioning wheel 15 to swing to the middle or move outward at the same time, thereby adjusting the tension of the electrode wire 21.

[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A wire feeding mechanism for an electric spark wire cutting machine, characterized in that: include: A support plate (1), wherein the outer surface of the support plate (1) is fixedly connected to a motor (2), the output end of the motor (2) is fixedly connected to a wire storage barrel (3), the outer surface of the wire storage barrel (3) is provided with an electrode wire (21), a first guide wheel (4) is provided on the side of the support plate (1) away from the wire storage barrel (3), the outer surface of the support plate (1) is fixedly connected to a bidirectional shaft motor (5), the output ends on both sides of the bidirectional shaft motor (5) are fixedly connected to threaded rods (6), the two ends of the threaded rod (6) are rotatably connected to fixed blocks (7), and the outer surface of the fixed block (7) is fixedly connected to the support plate (1); The outer surface of the threaded rod (6) is threadedly connected to a sliding block (8), the outer surface of the sliding block (8) is slidably connected to the support plate (1), the outer surface of the sliding block (8) is rotatably connected to a first connecting rod (9), and the end of the first connecting rod (9) away from the sliding block (8) is rotatably connected to a first gear (10); The outer surface of the first gear (10) is meshingly connected with the second gear (11), and the second gear (11) is provided with two groups. The outer surface of the second gear (11) is fixedly connected with a rotating shaft (12), and the outer surface of the rotating shaft (12) is rotatably connected to the support plate (1), and the end of the rotating shaft (12) away from the second gear (11) is fixedly connected with a second guide wheel (13), and the outer surface of the second guide wheel (13) is fixedly connected with a second connecting rod (14), and the side of the second connecting rod (14) away from the second guide wheel (13) is fixedly connected with a tensioning wheel (15), and the outer surface of the tensioning wheel (15) is slidably connected to the support plate (1), and the outer surface of the tensioning wheel (15) is movably connected to the electrode wire (21).

2. The wire feeding mechanism of the electric spark wire cutting machine according to claim 1, characterized in that: The output end of the motor (2) is fixedly connected to a rotating disk (16).

3. The wire feeding mechanism of the electric spark wire cutting machine according to claim 2, characterized in that: The side surface of the rotating disk (16) is rotatably connected to the supporting plate (1).

4. The wire feeding mechanism of the electric spark wire cutting machine according to claim 2, characterized in that: The outer surface of the rotating disk (16) is provided with a thread groove (17), and the interior of the wire storage tube (3) is rotatably connected with a rotating block (18).

5. The wire feeding mechanism of the electric spark wire cutting machine according to claim 4, characterized in that: The outer surface of the rotating block (18) is fixedly connected to a limiting block (19).

6. The wire feeding mechanism of the electric spark wire cutting machine according to claim 5, characterized in that: A threaded block (20) is fixedly connected to a surface of the limiting block (19) away from the rotating block (18), and an outer surface of the threaded block (20) is threadedly connected to the thread groove (17).

7. The wire feeding mechanism of the electric spark wire cutting machine according to claim 1, characterized in that: The motor (2) and the bidirectional shaft motor (5) are both connected to an external power source.

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