Automatic wire dismounting and threading guide mechanism applied to wire cutting

Abstract

The invention belongs to the technical field of linear cutting machining, and particularly relates to an automatic wire dismounting and threading guide mechanism applied to linear cutting, which comprises an upper machine head, and a lower machine head is arranged below the upper machine head; the opening and closing mechanism is arranged on the upper machine head; the cleaning mechanism is arranged on the upper machine head; the number of the clamping and conveying mechanisms is two, and the two clamping and conveying mechanisms are located on the upper machine head and the lower machine head correspondingly. Through the design that the complete guide wire tube is divided into the two guide wire half tubes in a split mode, the situation that an electrode wire collides with the inner sides of the two guide wire half tubes is reduced on the premise that the diameter sizes of the two guide wire half tubes are not increased, and working liquid attached to the inner sides of the guide wire half tubes can be cleaned through the cleaning mechanism; and the electrode wire can be clamped and moved through the clamping and conveying mechanism, so that the electrode wire is conveniently located on the inner sides of the two guide wire half tubes when the two guide wire half tubes are combined together.

Description

Technical Field

[0001] The invention belongs to the technical field of wire cutting processing, and in particular relates to an automatic threading wire guide mechanism used for wire cutting. Background Art

[0002] In wire cutting, after fixing the workpiece, the electrode wire needs to be passed through the hole on the workpiece so that the electrode wire forms a closed loop with the workpiece as an electrode to achieve material removal. When the electrode wire is automatically removed, the guide mechanism needs to guide the process of the electrode wire passing through the hole to reduce the situation where the electrode wire is not aligned with the hole after deviation, resulting in curling and difficulty in passing through the workpiece.

[0003] In the process of using the existing automatic wire removal and threading guide mechanism for wire cutting, the wire guide tube is generally sleeved on the electrode wire, and the electrode wire will inevitably vibrate laterally during the wire cutting process, which makes it easy for the electrode wire to collide with the inner wall of the wire guide tube, affecting the stability of the electrode wire. In addition, the diameter of the wire guide tube is generally fixed. If the diameter is increased, although the collision can be reduced, the guiding effect is reduced, and it is not convenient to pass the wire guide tube through the hole with a smaller aperture on the workpiece. Reducing the collision between the electrode wire and the inner wall of the wire guide tube without increasing the diameter of the wire guide tube is a problem that the current guiding mechanism needs to solve. In the process of wire cutting, it is generally necessary to spray working fluid on the electrode wire. When removing the wire, the electrode wire is easy to adhere to the working fluid on the inner wall of the wire guide tube when passing through the wire guide tube, so that the electrode wire is easily obstructed by the working fluid when threading, affecting the guiding accuracy, and it needs to be cleaned. In order to facilitate guiding, the inner diameter of the traditional wire guide tube is usually small, making it difficult for cleaning tools to reach into the inside of the wire guide tube for cleaning, and the convenience is insufficient. Summary of the invention

[0004] The object of the present invention is to provide an automatic wire-disassembling guide mechanism for wire cutting, which can reduce the collision between the electrode wire and the inner sides of the two wire half-tubes without increasing the diameter of the two wire half-tubes by splitting the complete wire guide tube into two wire half-tubes, and can clean the working fluid attached to the inner sides of the wire half-tubes by a cleaning mechanism, and can clamp and move the electrode wire by a clamping mechanism, so that the electrode wire is located on the inner sides of the two wire half-tubes when the two wire half-tubes are combined.

[0005] The technical solution adopted by the present invention is as follows: An automatic threading wire guide mechanism for wire cutting, comprising: An upper machine head, wherein a lower machine head is arranged below the upper machine head; An opening and closing mechanism, the opening and closing mechanism is arranged on the upper machine head, the opening and closing mechanism comprises a lifting plate slidably mounted on the upper machine head along a vertical direction, and guide wire half tubes are slidably mounted on both ends of the lifting plate; A cleaning mechanism, the cleaning mechanism is arranged on the upper machine head, the cleaning mechanism comprises a connecting plate slidably mounted on the upper machine head in a vertical direction, both ends of the connecting plate are rotatably connected with cleaning rollers, and the cleaning rollers are in rolling cooperation with the inner side of the guide wire half tube; A clamping and conveying mechanism, wherein two clamping and conveying mechanisms are provided and are respectively located on the upper head and the lower head, and the clamping and conveying mechanism comprises a shell, the upper head and the lower head are both detachably connected to the shell, and a driving wheel and a driven wheel are slidably mounted at both ends of the shell; Wherein, the two guide wire half tubes are closed to each other when they are close to each other and are used for guiding the wire, and the cleaning roller cleans along the inner side of the guide wire half tube when the two guide wire half tubes are separated from each other.

[0006] As a preferred solution of the automatic wire-disassembling guide mechanism for wire cutting described in the present invention, the lifting plate is slidably connected to the upper head along the vertical direction, a first telescopic cylinder is fixedly connected to the upper head, an output end of the first telescopic cylinder is fixedly connected to the lifting plate, both ends of the lifting plate are fixedly connected to a first telescopic rod, and the wire guide half-tube is fixedly connected to the output end of the first telescopic rod.

[0007] As a preferred solution of the automatic wire-disassembly guide mechanism for wire cutting described in the present invention, a first sliding hole is opened on the lifting plate, a first guide rod is fixedly connected to the inner wall of the upper head, and the first sliding hole and the first guide rod slide in cooperation along the vertical direction.

[0008] As a preferred solution of the automatic wire-disassembly guide mechanism for wire cutting described in the present invention, the connecting plate is slidably connected to the upper head along the vertical direction, a second telescopic cylinder is fixedly connected to the upper head, and the output end of the second telescopic cylinder is fixedly connected to the connecting plate.

[0009] As a preferred solution of the automatic wire-disassembly guide mechanism for wire cutting described in the present invention, a second sliding hole is opened on the connecting plate, a second guide rod is fixedly connected to the inner wall of the upper head, and the second sliding hole and the second guide rod slide in cooperation along the vertical direction.

[0010] As a preferred solution of the automatic wire disassembly and threading wire guide mechanism applied to wire cutting described in the present invention, the clamping mechanism also includes a second telescopic rod and a third telescopic rod respectively fixedly mounted on both ends of the shell, the output end of the second telescopic rod is fixedly connected to the first mounting plate, the first mounting plate is fixedly connected to the first motor, the driving wheel is fixedly connected to the output end of the first motor, the output end of the third telescopic rod is fixedly connected to the second mounting plate, and the driven wheel is rotatably connected to the second mounting plate.

[0011] As a preferred solution of the automatic wire-disassembly guide mechanism for wire cutting described in the present invention, wherein: a first sliding column is fixedly connected to the first mounting plate, a first sliding block is fixedly connected to the shell, and the first sliding block is slidably matched with the first sliding column.

[0012] As a preferred solution of the automatic wire-disassembly guide mechanism for wire cutting described in the present invention, wherein: a second sliding column is fixedly connected to the second mounting plate, a second sliding block is fixedly connected to the shell, and the second sliding block is slidably matched with the second sliding column.

[0013] As a preferred solution of the automatic wire-disassembling guide mechanism for wire cutting described in the present invention, a first recessed groove is provided on the driving wheel, a second recessed groove is provided on the driven wheel, and the first recessed groove and the second recessed groove are located on the same vertical plane.

[0014] As a preferred solution of the automatic wire disassembly and threading guide mechanism applied to wire cutting described in the present invention, wherein: the cleaning roller includes a shaft portion rotatably connected to the connecting plate, a cleaning portion is slidably connected to the shaft portion, the inner side of the cleaning portion is rotatably matched with the shaft portion, a retaining ring is provided at one end of the cleaning portion close to the connecting plate, the retaining ring is fixedly connected to the shaft portion, a limiting ring is provided at one end of the cleaning portion away from the connecting plate, the limiting ring is threadedly connected to the shaft portion, a second motor is provided at one end of the shaft portion close to the connecting plate, the output end of the second motor is fixedly connected to one end of the shaft portion close to the connecting plate, the second motor is fixedly connected to the connecting plate, and the outer side of the cleaning portion is arc-shaped and bent toward the outside.

[0015] The technical effects achieved by the present invention are: The present invention adopts a design of splitting a complete wire guide tube into two wire guide half tubes. When the electrode wire moves during the wire cutting process, the two wire guide half tubes are away from the electrode wire, so that when the electrode wire vibrates, it does not collide with the inner side of the wire guide half tube, thereby reducing the impact of the collision on the stability of the electrode wire. In addition, the split design does not change the overall diameter size of the original complete wire guide tube. After the two wire guide half tubes are combined, they can still pass through the workpiece hole that the complete wire guide tube can pass through, thereby reducing the collision between the electrode wire and the inner side of the two wire guide half tubes without increasing the diameter size of the two wire guide half tubes. The present invention adopts a design of a cleaning mechanism, which can clean the working fluid attached to the inner side of the wire guide half-tube through a cleaning roller that moves up and down, thereby reducing the situation where the electrode wire is obstructed by the working fluid during wire threading and affects the guiding accuracy. In addition, due to the two wire guide half-tubes of the split design, compared with the integrated wire guide tube in the prior art, it is avoided that the cleaning tool is difficult to penetrate into the inside of the wire guide tube with a smaller aperture for cleaning, and it is convenient to clean the working fluid in the time interval between wire removal and wire threading, thereby improving convenience. The present invention adopts the design of a clamping and conveying mechanism, which can clamp and move the electrode wire. It not only limits the electrode wire by clamping it, so that the electrode wire is in a straight line along the vertical direction, so that when the two wire guide half-tubes are put together, the electrode wire is located on the inner side of the two wire guide half-tubes, reducing the situation where the inner wall clamps the electrode wire when the two wire guide half-tubes are put together, but also moves the electrode wire by rotating the driving wheel, so that the electrode wire is convenient for passing through the hole of the workpiece when removing or threading the wire, thereby improving convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a cross-sectional schematic diagram of the upper machine head and the clamping and conveying mechanism in the present invention; Figure 3 It is a cross-sectional schematic diagram of the upper machine head and the opening and closing mechanism in the present invention; Figure 4 It is a cross-sectional schematic diagram of the upper machine head and the cleaning mechanism in the present invention; Figure 5 It is a cross-sectional schematic diagram of the opening and closing mechanism and the cleaning mechanism in the present invention; Figure 6 It is a cross-sectional schematic diagram of the wire guide half tube and the cleaning roller in the present invention; Figure 7 It is a schematic diagram of the structure of the connecting plate and the cleaning roller in the present invention; Figure 8 It is a cross-sectional schematic diagram of the clamping and conveying mechanism in the present invention.

[0017] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 10. Upper machine head; 11. Lower machine head; 20. Opening and closing mechanism; 21. Lifting plate; 22. Guide wire half tube; 30. Cleaning mechanism; 31. Connecting plate; 32. Cleaning roller; 40. Clamping mechanism; 41. Shell; 42. Driving wheel; 43. Driven wheel; 51. First telescopic cylinder; 52. First telescopic rod; 53. First sliding hole; 54. First guide rod; 55. Second telescopic cylinder; 56. Second sliding hole; 57. Second guide rod; 61. Second telescopic rod; 62. Third telescopic rod; 63. First mounting plate; 64. First motor; 65. Second mounting plate; 66. First slide column; 67. First slider; 68. Second slide column; 69. Second slider; 71. Shaft; 72. Cleaning part; 73. Retaining ring; 74. Limiting ring; 75. Second motor; 81. First recessed groove; 82. Second recessed groove. DETAILED DESCRIPTION

[0018] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention, and does not strictly limit the scope of protection of the specific claims of the present invention.

[0019] like Figures 1 to 8 As shown, it is the first embodiment of the present invention, which provides an automatic wire-threading guide mechanism for wire cutting, including an upper machine head 10, a lower machine head 11 is arranged below the upper machine head 10; an opening and closing mechanism 20, the opening and closing mechanism 20 is arranged on the upper machine head 10, and the opening and closing mechanism 20 includes a lifting plate 21 slidably mounted on the upper machine head 10 in a vertical direction, and both ends of the lifting plate 21 are slidably mounted with a wire guide half tube 22; a cleaning mechanism 30, the cleaning mechanism 30 is arranged on the upper machine head 10, and the cleaning mechanism 30 includes a connecting plate 31 slidably installed on the upper head 10 along the vertical direction, and both ends of the connecting plate 31 are rotatably connected to cleaning rollers 32, and the cleaning rollers 32 roll with the inner side of the guide wire half tube 22; a clamping mechanism 40, two clamping mechanisms 40 are provided and are respectively located on the upper head 10 and the lower head 11, and the clamping mechanism 40 includes a shell 41, and the upper head 10 and the lower head 11 are detachably connected to the shell 41, and a driving wheel 42 and a driven wheel 43 are slidably installed at both ends of the shell 41.

[0020] It should be noted that the upper machine head 10 and the lower machine head 11 are both prior art, a first through hole is provided at the bottom of the upper machine head 10, a second through hole is provided at the top of the lower machine head 11, the first through hole and the second through hole are aligned in the vertical direction, the upper machine head 10 and the lower machine head 11 are both detachably connected to the shell 41 by bolts (not shown in the figure), an electrode wire is arranged inside the upper machine head 10, the electrode wire is prior art, the electrode wire is vertically penetrated in the upper machine head 10, the lower machine head 11 and the clamping mechanism 40, the two wire guide half tubes 22 are respectively located on both sides of the electrode wire, and the two Each wire guide half tube 22 is half of a complete wire guide tube. The wire guide tube is a prior art and is in the shape of a long cylinder. It is used to provide guidance for the electrode wire passing through the hole in the workpiece. The two wire guide half tubes 22 are combined to form a complete wire guide tube, and the complete wire guide tube is aligned with the first through hole in the vertical direction. The driving wheel 42 and the driven wheel 43 are respectively located on both sides of the electrode wire. A workpiece (not shown in the figure) is arranged between the upper head 10 and the lower head 11. A hole (not shown in the figure) is opened on the workpiece. The first through hole and the second through hole are aligned with the hole in the vertical direction.

[0021] It should also be noted that the upper head 10 and the lower head 11 are both fixedly mounted on a wire cutting machine (not shown in the figure), which is a prior art. The wire cutting machine is provided with an automatic wire dismantling mechanism (not shown in the figure), which is a prior art, and includes a disconnection component for disconnecting the electrode wire by fusing or cutting, and also includes a traction component for pulling the electrode wire passing through the hole of the workpiece to a wire storage barrel and fixing it on the wire storage barrel. Details will not be repeated here. In the initial state, the two wire guide half-tubes 22 are away from the electrode wire from each other, and the two wire guide half-tubes 22 do not extend downward to the outside of the upper head 10. The electrode wire passes through the clamping mechanism 40 connected to the upper head 10, the upper head 10, the hole of the workpiece, the lower head 11 and the clamping mechanism 40 connected to the lower head 11, and the driving wheel 42 and the driven wheel 43 are both away from the electrode wire.

[0022] When the present invention is in use, when it is necessary to remove the wire, the driving wheel 42 and the driven wheel 43 in the two clamping and feeding mechanisms 40 approach each other and clamp the electrode wire, limit the electrode wire, so that the electrode wire is in a straight line along the vertical direction, so that when the two wire guide half tubes 22 are combined together, the electrode wire is located in the middle of the inner side of the two wire guide half tubes 22, and the situation that the inner wall clamps the electrode wire when the two wire guide half tubes 22 are combined together is reduced. After the two wire guide half tubes 22 slide inward along the lifting plate 21, the two wire guide half tubes 22 are respectively close to the electrode wire from both sides of the electrode wire, so that the two wire guide half tubes 22 are combined to form a complete wire guide tube. At this time, the electrode wire is located on the inner side of the complete wire guide tube, that is, located on the inner side of the two wire guide half tubes 22, and connected to the lower head 1 The driving wheel 42 and the driven wheel 43 in the clamping and conveying mechanism 40 on the upper machine head 1 are away from the electrode wire and no longer limit the electrode wire. The driving wheel 42 in the clamping and conveying mechanism 40 connected to the upper machine head 10 rotates to drive the electrode wire to move upward, so that the end of the electrode wire is away from the lower machine head 11 and passes through the hole of the workpiece to the inside of the upper machine head 10. At this time, the electrode wire is located on the inner side of the two wire guide half tubes 22, so that the electrode wire is removed from the workpiece. When it is necessary to thread the wire, the lifting plate 21 moves downward along the upper machine head 10, and the lifting plate 21 drives the wire guide half tube 22 to move downward in the vertical direction, so that the wire guide half tube 22 extends to the lower end of the upper machine head 10 and passes through the hole of the workpiece. The lifting plate 21 continues to move downward, so that the wire guide half tube 22 The lower end of the upper machine head 10 is in contact with the lower machine head 11, so that a channel is formed between the upper machine head 10 and the lower machine head 11 through the two wire guide half tubes 22, and the channel is located on the inner side of the hole of the workpiece. The driving wheel 42 in the clamping and feeding mechanism 40 connected to the upper machine head 10 drives the electrode wire to move downward after rotation, so that the electrode wire passes through the hole of the workpiece along the inner side of the two wire guide half tubes 22 and moves to the lower machine head 11. Since the two wire guide half tubes 22 prevent the electrode wire from deviating outward, it is convenient to guide the process of the electrode wire passing through the hole of the workpiece. The wire guide half tube 22 continues to move downward to the clamping and feeding mechanism 40 connected to the lower machine head 11, and the driving wheel 42 and the driven wheel 43 approach each other and clamp the electrode wire, thereby realizing the electrode wire passing through the workpiece and lifting. The plate 21 moves upward along the upper machine head 10, so that the two wire guide half tubes 22 move upward and then retract into the interior of the upper machine head 10, and the two wire guide half tubes 22 are away from the electrode wire, and the driving wheels 42 and the driven wheels 43 of the two clamping mechanisms 40 are away from the electrode wire to achieve resetting. Compared with the integrated wire guide tube in the prior art, since the complete wire guide tube is split into two wire guide half tubes 22, the two wire guide half tubes 22 are away from the electrode wire during the wire cutting process. Even if the electrode wire vibrates during movement, it will not collide with the inner side of the two wire guide half tubes 22. The workpiece hole that the complete wire guide tube can originally pass through does not change the overall diameter size of the complete wire guide tube after the two wire guide half tubes 22 are combined together, and the workpiece hole can still be passed through.It is convenient to reduce the collision between the electrode wire and the inner side of the two wire guide half tubes 22 without increasing the diameter size of the two wire guide half tubes 22, that is, it is convenient for the two wire guide half tubes 22 to pass through the hole of the workpiece while reducing the collision, and when the two wire guide half tubes 22 are away from the electrode wire, the connecting plate 31 moves up and down along the upper machine head 10, and the connecting plate 31 drives the cleaning roller 32 to move up and down along the inner side of the wire guide half tube 22, so that the cleaning roller 32 rolls along the inner side of the wire guide half tube 22 and cleans the working fluid attached to the inner side of the wire guide half tube 22, thereby reducing the electrode wire when threading. In the case where the wire is obstructed by these working fluids and the guiding accuracy is affected, compared with the integrated wire guide tube in the prior art, since the complete wire guide tube is split into two wire guide half tubes 22, there is no need to insert a cleaning tool into the wire guide tube for cleaning, which is convenient for cleaning the working fluid in the time interval between wire removal and wire threading, thereby improving convenience. After the clamping mechanism 40 works, it not only moves the electrode wire, which is convenient for the electrode wire to pass through the hole of the workpiece during wire removal and wire threading, but also limits the position of the electrode wire, so that the electrode wire is located on the inner side of the two wire guide half tubes 22 when the two wire guide half tubes 22 are combined.

[0023] Reference Figures 1 to 8 , which is the second embodiment of the present invention, and this embodiment is based on the previous embodiment.

[0024] like Figure 3 , Figure 5 and Figure 6 As shown, the lifting plate 21 is slidably connected to the upper head 10 in the vertical direction, and a first telescopic cylinder 51 is fixedly connected to the upper head 10. The output end of the first telescopic cylinder 51 is fixedly connected to the lifting plate 21. Both ends of the lifting plate 21 are fixedly connected to a first telescopic rod 52, and the guide wire half tube 22 is fixedly connected to the output end of the first telescopic rod 52.

[0025] It should be noted that the first telescopic cylinder 51 is preferably a telescopic hydraulic cylinder in the present invention, and the first telescopic rod 52 is preferably an electric telescopic rod in the present invention.

[0026] According to the above structure, after the first telescopic cylinder 51 works, the output end drives the lifting plate 21 to move up and down along the upper head 10, and the lifting plate 21 drives the wire guide half tube 22 to move up and down in the vertical direction through the first telescopic rod 52. When the wire guide half tube 22 moves downward, it is convenient for the wire guide half tube 22 to pass through the workpiece. When the wire guide half tube 22 moves upward, it is convenient for the wire guide half tube 22 to be retracted into the upper head 10. After the first telescopic rod 52 works, the output end drives the wire guide half tube 22 to move in the horizontal direction. When the two wire guide half tubes 22 are close to each other, it is convenient for the two wire guide half tubes 22 to be combined together to form a complete wire guide tube. When the two wire guide half tubes 22 are away from each other, since the wire guide half tube 22 is away from the electrode wire, it is not only convenient to reduce the collision between the electrode wire and the wire guide half tube 22 when it vibrates, but also convenient to reduce the collision between the cleaning roller 32 and the electrode wire when the cleaning roller 32 cleans the wire guide half tube 22.

[0027] like Figure 3 , Figure 5 and Figure 6 As shown, a first sliding hole 53 is opened on the lifting plate 21, and a first guide rod 54 is fixedly connected to the inner wall of the upper head 10, and the first sliding hole 53 and the first guide rod 54 are slidably matched along the vertical direction.

[0028] According to the above structure, the first guide rod 54 cooperates with the first sliding hole 53, so that the process of the lifting plate 21 sliding up and down along the upper machine head 10 is more stable.

[0029] like Figure 4 and Figure 5 As shown, the connecting plate 31 is slidably connected to the upper head 10 along the vertical direction, a second telescopic cylinder 55 is fixedly connected to the upper head 10 , and an output end of the second telescopic cylinder 55 is fixedly connected to the connecting plate 31 .

[0030] It should be noted that the second telescopic cylinder 55 is preferably a telescopic hydraulic cylinder in the present invention.

[0031] According to the above structure, after the second telescopic cylinder 55 works, the output end drives the connecting plate 31 to move up and down along the upper head 10, and the connecting plate 31 drives the cleaning roller 32 to move up and down in the vertical direction, so that the cleaning roller 32 can roll along the guide wire half tube 22 and clean the working fluid attached to the inner side of the guide wire half tube 22.

[0032] like Figure 4 , Figure 5 and Figure 7 As shown, a second sliding hole 56 is opened on the connecting plate 31, and a second guide rod 57 is fixedly connected to the inner wall of the upper machine head 10, and the second sliding hole 56 and the second guide rod 57 are slidably matched along the vertical direction.

[0033] According to the above structure, the second guide rod 57 and the second sliding hole 56 cooperate with each other, so that the sliding process of the connecting plate 31 along the upper machine head 10 is more stable.

[0034] like Figure 8 As shown, the clamping mechanism 40 also includes a second telescopic rod 61 and a third telescopic rod 62 respectively fixedly mounted on both ends of the shell 41, the output end of the second telescopic rod 61 is fixedly connected to the first mounting plate 63, the first mounting plate 63 is fixedly connected to the first motor 64, the driving wheel 42 is fixedly connected to the output end of the first motor 64, the output end of the third telescopic rod 62 is fixedly connected to the second mounting plate 65, and the driven wheel 43 is rotatably connected to the second mounting plate 65.

[0035] It should be noted that the second telescopic rod 61 and the third telescopic rod 62 are preferably electric telescopic rods in the present invention.

[0036] According to the above structure, when it is necessary to clamp the electrode wire, after the second telescopic rod 61 works, the output end drives the driving wheel 42 to move inward through the second telescopic rod 61, and after the third telescopic rod 62 works, the output end drives the driven wheel 43 to move inward through the second mounting plate 65, so that the driving wheel 42 and the driven wheel 43 are close to each other and clamp the electrode wire. When it is necessary to move the electrode wire, after the first motor 64 works, the output end drives the driving wheel 42 to rotate, so that the driving wheel 42 drives the electrode wire to move, and at this time the driven wheel 43 also rotates with the movement of the electrode wire. When it is not necessary to clamp the electrode wire, after the second telescopic rod 61 works, the output end drives the driving wheel 42 to move outward through the second telescopic rod 61, and after the third telescopic rod 62 works, the output end drives the driven wheel 43 to move outward through the second mounting plate 65, so that the driving wheel 42 and the driven wheel 43 are away from each other and no longer clamp the electrode wire.

[0037] like Figure 8 As shown, a first sliding post 66 is fixedly connected to the first mounting plate 63 , and a first sliding block 67 is fixedly connected to the housing 41 . The first sliding block 67 is slidably matched with the first sliding post 66 .

[0038] It should be noted that a third through hole is formed inside the first sliding block 67 , and the third through hole and the first sliding column 66 are slidably matched in the horizontal direction.

[0039] According to the above structure, the first sliding column 66 cooperates with the first sliding block 67, so that the sliding process of the first mounting plate 63 along the housing 41 is more stable.

[0040] like Figure 8 As shown, a second sliding post 68 is fixedly connected to the second mounting plate 65 , and a second sliding block 69 is fixedly connected to the housing 41 . The second sliding block 69 is slidably matched with the second sliding post 68 .

[0041] It should be noted that a third through hole is provided inside the second sliding block 69 , and the third through hole and the second sliding column 68 are slidably matched in the horizontal direction.

[0042] According to the above structure, the second sliding post 68 cooperates with the second sliding block 69, so that the sliding process of the second mounting plate 65 along the housing 41 is more stable.

[0043] like Figure 8 As shown, a first concave groove 81 is formed on the driving wheel 42, and a second concave groove 82 is formed on the driven wheel 43. The first concave groove 81 and the second concave groove 82 are located on the same vertical plane.

[0044] It should be noted that the cross-sectional shapes of the first recessed groove 81 and the second recessed groove 82 are both “V”-shaped, and the first recessed groove 81 and the second recessed groove 82 are both fitted with the electrode wire.

[0045] According to the above structure, the first recessed groove 81 and the second recessed groove 82 are provided to limit the position of the electrode wire, so as to keep the electrode wire in a straight line along the vertical direction.

[0046] like Figure 7 As shown, the cleaning roller 32 includes a shaft portion 71 rotatably connected to the connecting plate 31, a cleaning portion 72 is slidably connected to the shaft portion 71, the inner side of the cleaning portion 72 is rotatably matched with the shaft portion 71, a retaining ring 73 is provided at one end of the cleaning portion 72 close to the connecting plate 31, the retaining ring 73 is fixedly connected to the shaft portion 71, a limiting ring 74 is provided at one end of the cleaning portion 72 away from the connecting plate 31, the limiting ring 74 is threadedly connected to the shaft portion 71, a second motor 75 is provided at one end of the shaft portion 71 close to the connecting plate 31, the output end of the second motor 75 is fixedly connected to the end of the shaft portion 71 close to the connecting plate 31, the second motor 75 is fixedly connected to the connecting plate 31, and the outer side of the cleaning portion 72 is arc-shaped and is bent toward the outside.

[0047] It should be noted that an internal thread is provided on the inner side of the limiting ring 74, and an external thread is provided on one end of the shaft portion 71 close to the limiting ring 74, the internal thread and the external thread cooperate with each other, and the cleaning portion 72 is made of a deformable water-absorbing material, which is preferably a sponge cover in the present invention.

[0048] According to the above structure, when the connecting plate 31 drives the cleaning roller 32 to move along the guide wire half tube 22, the cleaning roller 32 rolls along the inner side of the guide wire half tube 22, so that the shaft portion 71 and the cleaning portion 72 roll along the inner side of the guide wire half tube 22. At this time, the shaft portion 71 and the cleaning portion 72 passively rotate along the connecting plate 31. If it is necessary to actively rotate the shaft portion 71 and the cleaning portion 72, the output end of the second motor 75 drives the shaft portion 71 and the cleaning portion 72 to rotate after working, so that the shaft portion 71 and the cleaning portion 72 actively roll along the inner side of the guide wire half tube 22, which is convenient for cleaning the working fluid attached to the inner side of the guide wire half tube 22. The cleaning part 72 is cleaned, and the retaining ring 73 and the limiting ring 74 are used to limit the cleaning part 72 at both ends of the cleaning part 72 to prevent the cleaning part 72 from being separated from the shaft part 71, and because the limiting ring 74 is threadedly connected to the shaft part 71, the cleaning part 72 can be disassembled and assembled by disassembling and assembling the limiting ring 74 and the shaft part 71, so as to facilitate the replacement of the cleaning part 72, and the cleaning part 72 with an arc-shaped outer side is convenient for the outer side of the cleaning part 72 to fit with the inner side of the guide wire half tube 22, thereby improving the contact between the cleaning part 72 and the inner side of the guide wire half tube 22, and facilitating the cleaning part 72 to clean the working fluid attached to the inner side of the guide wire half tube 22.

[0049] The working principle of the present invention is as follows: the two wire guide half-tubes 22 are close to each other and combined to form a complete wire guide tube. Compared with the integrated wire guide tube in the prior art, there is no need to change the diameter size of the wire guide tube, which is convenient for the wire guide tube to pass through the hole of the workpiece. After the two wire guide half-tubes 22 move away from each other, they also move away from the electrode wire, avoiding the electrode wire from colliding with the inner wall of the wire guide half-tube 22 when vibrating, thereby reducing the collision between the electrode wire and the inner side of the two wire guide half-tubes 22 without increasing the diameter size of the two wire guide half-tubes 22. After the two wire guide half-tubes 22 move away from each other, the cleaning roller 32 of the cleaning mechanism 30 cleans the working fluid attached to the inner side of the wire guide half-tube 22, reducing the situation where the electrode wire is obstructed by these working fluids during wire threading and affecting the guiding accuracy. Compared with the prior art, it is avoided that the cleaning tool is difficult to extend into the inside of the integrated wire guide tube for cleaning, thereby improving convenience. After the clamping mechanism 40 works, it clamps the electrode wire so that the electrode wire remains in a vertical state, which is convenient for the electrode wire to be located on the inner side of the two wire guide half-tubes 22 after the two wire guide half-tubes 22 are combined.

[0050] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art unless otherwise specified and limited.

Claims

1. An automatic threading wire guide mechanism for wire cutting, characterized in that: include: An upper machine head (10), wherein a lower machine head (11) is arranged below the upper machine head (10); An opening and closing mechanism (20), the opening and closing mechanism (20) being arranged on the upper machine head (10), the opening and closing mechanism (20) comprising a lifting plate (21) slidably mounted on the upper machine head (10) in a vertical direction, and guide wire half tubes (22) being slidably mounted on both ends of the lifting plate (21); A cleaning mechanism (30), the cleaning mechanism (30) being arranged on the upper machine head (10), the cleaning mechanism (30) comprising a connecting plate (31) slidably mounted on the upper machine head (10) in a vertical direction, both ends of the connecting plate (31) being rotatably connected to cleaning rollers (32), the cleaning rollers (32) rollingly cooperating with the inner side of the guide wire half tube (22); A clamping and conveying mechanism (40), wherein two clamping and conveying mechanisms (40) are provided and are respectively located on the upper machine head (10) and the lower machine head (11), wherein the clamping and conveying mechanism (40) comprises a shell (41), wherein the upper machine head (10) and the lower machine head (11) are both detachably connected to the shell (41), and a driving wheel (42) and a driven wheel (43) are respectively slidably mounted at two ends inside the shell (41); The two wire guide half tubes (22) are closed to each other when they are brought close to each other for guiding the wire, and the cleaning roller (32) cleans along the inner side of the wire guide half tube (22) when the two wire guide half tubes (22) are moved away from each other.

2. The automatic threading wire guide mechanism for wire cutting according to claim 1 is characterized in that: The lifting plate (21) is slidably connected to the upper machine head (10) in a vertical direction; a first telescopic cylinder (51) is fixedly connected to the upper machine head (10); an output end of the first telescopic cylinder (51) is fixedly connected to the lifting plate (21); both ends of the lifting plate (21) are fixedly connected to a first telescopic rod (52); and the guide wire half tube (22) is fixedly connected to the output end of the first telescopic rod (52).

3. The automatic threading wire guide mechanism for wire cutting according to claim 1 is characterized in that: A first sliding hole (53) is provided on the lifting plate (21), and a first guide rod (54) is fixedly connected to the inner wall of the upper machine head (10), and the first sliding hole (53) and the first guide rod (54) are slidably matched in a vertical direction.

4. The automatic threading wire guide mechanism for wire cutting according to claim 1 is characterized in that: The connecting plate (31) is slidably connected to the upper machine head (10) in a vertical direction, a second telescopic cylinder (55) is fixedly connected to the upper machine head (10), and an output end of the second telescopic cylinder (55) is fixedly connected to the connecting plate (31).

5. The automatic threading wire guide mechanism for wire cutting according to claim 1, characterized in that: A second sliding hole (56) is formed on the connecting plate (31), a second guide rod (57) is fixedly connected to the inner wall of the upper machine head (10), and the second sliding hole (56) and the second guide rod (57) are slidably matched in a vertical direction.

6. The automatic threading wire guide mechanism for wire cutting according to claim 1, characterized in that: The clamping and conveying mechanism (40) further comprises a second telescopic rod (61) and a third telescopic rod (62) respectively fixedly mounted on two ends of the housing (41); the output end of the second telescopic rod (61) is fixedly connected to a first mounting plate (63); the first mounting plate (63) is fixedly connected to a first motor (64); the driving wheel (42) is fixedly connected to the output end of the first motor (64); the output end of the third telescopic rod (62) is fixedly connected to a second mounting plate (65); and the driven wheel (43) is rotatably connected to the second mounting plate (65).

7. The automatic threading wire guide mechanism for wire cutting according to claim 6, characterized in that: A first sliding column (66) is fixedly connected to the first mounting plate (63), a first sliding block (67) is fixedly connected to the housing (41), and the first sliding block (67) is slidably matched with the first sliding column (66).

8. The automatic threading wire guide mechanism for wire cutting according to claim 6, characterized in that: A second sliding column (68) is fixedly connected to the second mounting plate (65), a second sliding block (69) is fixedly connected to the housing (41), and the second sliding block (69) is slidably matched with the second sliding column (68).

9. The automatic threading wire guide mechanism for wire cutting according to claim 1, characterized in that: The driving wheel (42) is provided with a first recessed groove (81), and the driven wheel (43) is provided with a second recessed groove (82), wherein the first recessed groove (81) and the second recessed groove (82) are located on the same vertical plane.

10. The automatic threading wire guide mechanism for wire cutting according to claim 1, characterized in that: The cleaning roller (32) comprises a shaft portion (71) rotatably connected to the connecting plate (31); a cleaning portion (72) is slidably connected to the shaft portion (71); the inner side of the cleaning portion (72) is rotatably matched with the shaft portion (71); a retaining ring (73) is provided at one end of the cleaning portion (72) close to the connecting plate (31); the retaining ring (73) is fixedly connected to the shaft portion (71); a limiting ring (74) is provided at one end of the cleaning portion (72) away from the connecting plate (31); the limiting ring (74) is threadedly connected to the shaft portion (71); a second motor (75) is provided at one end of the shaft portion (71) close to the connecting plate (31); an output end of the second motor (75) is fixedly connected to one end of the shaft portion (71) close to the connecting plate (31); the second motor (75) is fixedly connected to the connecting plate (31); and the outer side of the cleaning portion (72) is arc-shaped and is arranged to bend toward the outside.

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