Electrode wire conveying device with tension adjusting function

Abstract

The application discloses an electrode wire conveying device with tension adjusting function, and belongs to the technical field of wire cutting. The electrode wire conveying device comprises a rack, a wire tension control mechanism and a self-control conductive mechanism which are installed on the rack. The self-control conductive mechanism comprises a conductive assembly, a rotating propulsion assembly, a conductive block and a connecting block. In the above manner, when the contact part of the conductive block and the electrode wire is worn, the rotating propulsion control conductive block is rotated and propelled, so that the automatic surface replacement of the conductive block can be realized without stopping the machine. In addition, the conductive block will be axially displaced by a certain distance during each surface replacement operation, so that when the contact surface of the conductive block and the electrode wire is turned back to the initial contact surface, the contact part of the electrode wire and the conductive block has a certain interval with the contact part of the electrode wire and the conductive block in the last time, the maximum utilization of the conductive block is met, and the problems of complicated surface replacement of the conductive block and low utilization efficiency of the conductive block are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wire cutting, in particular to an electrode wire conveying device with tension adjustment function. BACKGROUND

[0002] The wire conveying device is the core component of the wire cutting machine tool, mainly composed of a wire winding mechanism and a wire feeding mechanism. The wire feeding mechanism stably and continuously pulls the electrode wire from the wire drum of the wire winding mechanism to the machining area, and then retracts the electrode wire to the wire drum, so that the electrode wire completes the cutting machining of the workpiece.

[0003] Chinese patent application CN113814495A discloses a wire cutting conductive block device, equipment and method. The wire cutting conductive block device comprises a sleeve (1), a conductive block adjusting shaft (2) having a connecting end for fixing a prismatic conductive block (A), the connecting end being located in the sleeve (1), the conductive block adjusting shaft (2) being capable of rotating relative to the sleeve (1) to drive the conductive block (A) to rotate relative to the sleeve (1), and a positioning structure (3) arranged between the conductive block adjusting shaft (2) and the sleeve (1), the positioning structure (3) being used for limiting the relative position of the conductive block adjusting shaft (2) and the sleeve (1). Through the device, the wire cutting equipment can realize the surface changing operation of the conductive block without stopping. However, the device still has the following problems:

[0004] The device relies on manual judgment of the wear condition of the conductive block to perform the surface changing operation of the conductive block. The conductive block is located inside the sleeve, and the electrode wire contacts the conductive block through the second through slot. The visibility of the contact part of the electrode wire and the conductive piece is poor, which is not conducive to observing the wear condition of the conductive block and is not convenient for manual replacement operation of the conductive block. In addition, the contact angle of the electrode wire and the conductive block also affects the working effect of the electrode wire. The conductive block of the device can only be adjusted to a set angle for work, which is not flexible to use.

[0005] Therefore, the present application provides an electrode wire conveying device with tension adjustment function to solve the above problems. SUMMARY

[0006] In view of the above-mentioned shortcomings of the prior art, the present application provides an electrode wire conveying device with tension adjustment function.

[0007] To achieve the above purpose, the present application realizes the following technical solutions:

[0008] An electrode wire conveying device with tension adjustment function, comprising a rack;

[0009] The left side of the upper end of the frame is provided with a wire tension control mechanism, and the right side of the upper end of the frame is fixedly provided with a three-axis combined module, and a plurality of guide wheels are vertically arranged on the moving end of the three-axis combined module; two self-control conductive mechanisms are arranged, one of which is arranged on the upper end of the frame and located between the guide wheels, and the other is arranged on the lower end of the frame; the two self-control conductive mechanisms cooperate to transmit and process current for the electrode wire;

[0010] The self-control conductive mechanism comprises a conductive assembly, a rotating propulsion assembly, a conductive block and a connecting block, the conductive assembly is fixedly connected with the moving end of the three-axis combined module or the frame, the rotating propulsion assembly is arranged on the conductive assembly, the connecting block is fixedly arranged on the moving end of the rotating propulsion assembly, and the connecting block is detachably connected with the conductive block through a connecting piece.

[0011] Further, the conductive assembly comprises a mounting seat, an electrode rod and mounting nuts, the mounting seat is fixedly connected with the moving end of the three-axis combined module or the frame, a hole through which the electrode rod passes is formed in the mounting seat, the two mounting nuts are threadedly connected with the electrode rod and are arranged on the two sides of the mounting seat, the two mounting nuts cooperate to tightly fix the electrode rod, and an insulating column is arranged between the electrode rod and the mounting seat.

[0012] Further, the rotating propulsion assembly comprises a lead screw, an adjusting block, a connecting plate and a mini push cylinder, the end of the lead screw is fixedly connected with the electrode rod, and the adjusting block is threadedly connected with the lead screw; the connecting plate is rotatably connected with the adjusting block through a bearing, and a through hole for avoiding the lead screw is formed in the connecting plate; the mini push cylinder is fixedly connected with the mounting seat, the output end of the mini push cylinder is fixedly connected with the connecting plate, and the adjusting block is fixedly connected with the connecting block.

[0013] Further, the conductive block is a regular polygonal prism, and each side surface of the conductive block is arranged in an arc shape.

[0014] Further, the wire tension control mechanism comprises fixed wheels, movable wheels, a sliding rod, a vertical moving push cylinder, a stop block, a vertical moving block and a pressure sensor, a plurality of fixed wheels are rotatably arranged on the frame, the sliding rod is fixedly connected with the frame, the stop block and the vertical moving block are limitingly and slidably connected with the sliding rod, the stop block is located on the upper side of the vertical moving block, and the pressure sensor is fixedly arranged on the upper end of the vertical moving block; the vertical moving push cylinder is fixedly connected with the frame, the output end of the vertical moving push cylinder is fixedly connected with the stop block, and the movable wheel is rotatably arranged on the vertical moving block.

[0015] Further, the automatic wire threading mechanism comprises a vertical moving linear module, mounting racks, an upper wire feeding assembly and a lower wire feeding assembly, the vertical moving linear module is fixedly arranged on the moving end of the wire tension control mechanism, and the moving end of the vertical moving linear module and the lower end of the frame are both fixedly provided with the mounting racks; the upper wire feeding assembly and the lower wire feeding assembly are respectively arranged on the upper and lower mounting racks; the electrode wire between the upper wire feeding assembly and the lower wire feeding assembly forms a cutting section for wire cutting operation.

[0016] Further, the upper wire feeding assembly comprises a wire conveying assembly, a fixed wire guide tube and a clamping assembly, the wire conveying assembly is installed on the mounting frame, the fixed wire guide tube is fixedly connected with the mounting frame, the movable wire guide tube is slidably installed on the mounting frame, the movable wire guide tube is located below the fixed wire guide tube and coaxially arranged with the fixed wire guide tube, and the clamping assembly is installed on the mounting frame and used for fixing the movable wire guide tube to prevent the movable wire guide tube from causing precision error due to sliding gap.

[0017] Further, the lower wire feeding assembly comprises a wire conveying assembly, an eye die and a wire guide wheel, the wire conveying assembly of the lower wire feeding assembly is the same as that of the upper wire feeding assembly, the eye die is fixedly connected with the mounting frame, and the wire guide wheel is rotatably connected with the mounting frame and used for guiding the electrode wire in the vertical state to the horizontal state.

[0018] Further, the wire conveying assembly comprises a movable wire guide tube, a fixed wire feeding assembly, a movable wire feeding assembly and a power device, the fixed wire guide tube is fixedly connected with the mounting frame and located between the fixed wire feeding assembly and the movable wire feeding assembly, the movable wire guide tube is located below the fixed wire guide tube and coaxially arranged with the fixed wire guide tube, the movable wire guide tube is provided with a groove on the side surface for avoiding the fixed wire feeding assembly and the movable wire feeding assembly to make the two cooperate to convey the electrode wire, and the power device is used for providing wire feeding power for the fixed wire feeding assembly and the movable wire feeding assembly.

[0019] Further, the movable wire feeding assembly comprises a wire feeding structure, a swing rod, a spring and a split and combination push cylinder, one end of the swing rod is rotatably connected with the mounting frame, the other end of the swing rod is fixedly connected with the mounting frame and provided with the spring, the split and combination push cylinder is fixedly connected with the mounting frame, an output end of the split and combination push cylinder is used for pushing the swing rod, and the wire feeding structure is installed on the swing rod.

[0020] Compared with the prior art, the present application has the following beneficial effects: 1. When the contact part of the conductive block and the electrode wire is worn, the conductive block is rotated and advanced by rotating the push control, so that the automatic surface replacement of the conductive block can be completed without stopping, and the conductive block will be displaced by a certain distance along its axial direction during each surface replacement operation, so that when the contact surface of the conductive block and the electrode wire is turned back to the initial contact surface, the contact part of the electrode wire and the conductive block has a certain interval from the contact part of the electrode wire and the conductive block in the last time, which meets the maximum utilization of the conductive block, solves the problems of complicated surface replacement of the conductive block and low utilization efficiency of the conductive block, and further improves the processing efficiency of the wire cutting and the service life of the conductive block.

[0021] 2. The electrode wire is discharged from the wire storage cylinder, the electrode wire is wound through each fixed wheel in turn and passes through the lower end of the movable wheel, the vertical moving block can slide vertically under the limiting action of the slide rod, so that the movable wheel realizes automatic tensioning of the electrode wire, and the stop block moves vertically under the limiting action of the slide rod by controlling the vertical moving push cylinder, so that the stop block presses down the vertical moving block, the active tensioning effect of the electrode wire can be realized, and the pressure reading between the stop block and the vertical moving block is obtained by the pressure sensor, to determine the size of the tension.

[0022] 3. The mounting rack on the upper side is lowered by controlling the vertical linear module, so that the movable wire guide pipe approaches the eye die, the motor of the wire conveying assembly drives the driving gear to rotate, and then drives the driving gear and the driven gear to rotate, the electrode wire is controlled to move under the cooperation of the driving conveying wheel and the driven conveying wheel, and then passes through the movable wire guide pipe and the eye die, and then passes out from the cooperation of the driving conveying wheel and the driven conveying wheel of the other wire conveying assembly, to realize the automatic threading effect, after threading is completed, the swing lever is pushed by the split and combination push cylinder to rotate, so that the driving conveying wheel and the driven conveying wheel are separated to release the electrode wire, so that the electrode wire can smoothly perform cutting operation. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating laborious work.

[0024] Figure 1 A perspective view of an electrode wire conveying device with tension adjustment function of the present application Figure One ;

[0025] Figure 2 A front view of an electrode wire conveying device with tension adjustment function of the present application

[0026] Figure 3 A perspective view of a wire tension control mechanism of the present application

[0027] Figure 4 A perspective view of a self-control conduction mechanism of the present application

[0028] Figure 5 A side view of a self-control conduction mechanism of the present application

[0029] Figure 6 A side view of a self-control conduction mechanism of the present application

[0030] Figure 7 A perspective view of an automatic threading mechanism of the present application Figure One ;

[0031] Figure 8 perspective view of the automatic threading mechanism of the present application Figure Two ;

[0032] Figure 9 sectional perspective view of the automatic threading mechanism of the present application Figure One ;

[0033] Figure 10 perspective view of the automatic threading mechanism of the present application Figure Three ;

[0034] Figure 11 sectional perspective view of the automatic threading mechanism of the present application Figure Two .

[0035] The reference signs in the figures respectively represent:

[0036] 1, frame; 2, three-axis combined module; 3, guide wheel; 4, wire tension control mechanism; 41, fixed wheel; 42, movable wheel; 43, sliding rod; 44, vertical moving push cylinder; 45, stop block; 46, vertical moving block; 47, pressure sensor; 5, self-control conductive mechanism; 51, mounting seat; 52, electrode rod; 53, mounting nut; 54, lead screw; 55, adjusting block; 56, connecting plate; 57, mini push cylinder; 58, conductive block; 59, connecting block; 6, automatic threading mechanism; 61, vertical moving linear module; 62, mounting frame; 63, upper wire walking assembly; 631, motor; 632, drive gear; 633, driving gear; 634, driving conveying wheel; 635, driven gear; 636, driven conveying wheel; 637, swing rod; 638, spring; 639, split and close push cylinder; 6310, fixed guide tube; 6311, movable guide tube; 6312, clamping block; 6313, clamping push cylinder; 64, lower wire walking assembly; 641, eye mold; 642, wire guide wheel. DETAILED DESCRIPTION

[0037] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0038] In the following description, "left", "right", "front", "back", "up" and "down" are oriented in the perspective of the front view.

[0039] In some embodiments, please refer to the drawings of the specification Figures 1-11The utility model provides an electrode wire conveying device with tension adjusting function, which comprises a frame 1;

[0040] A wire tension control mechanism 4 is mounted on the left side of the upper end of the frame 1, and a three-axis combined module 2 is fixedly mounted on the right side of the upper end of the frame 1; a plurality of guide wheels 3 are vertically mounted on the moving end of the three-axis combined module 2; two self-control conductive mechanisms 5 are provided, one of which is mounted on the upper end of the frame 1 and located between the guide wheels 3, and the other is mounted on the lower end of the frame 1; the two self-control conductive mechanisms 5 are matched to transmit and process current for the electrode wire;

[0041] The self-control conductive mechanism 5 comprises a conductive assembly, a rotating propulsion assembly, a conductive block 58 and a connecting block 59; the conductive assembly is fixedly connected with the moving end of the three-axis combined module 2 or the frame 1; the rotating propulsion assembly is mounted on the conductive assembly; the connecting block 59 is fixedly mounted on the moving end of the rotating propulsion assembly; and the connecting block 59 is detachably connected with the conductive block 58 through a connecting piece.

[0042] In the utility model, when the contact part of the conductive block 58 and the electrode wire is worn, the conductive block 58 is rotated and propelled to automatically change the surface of the conductive block 58 without stopping the machine; and the conductive block 58 is axially displaced by a certain distance during each surface changing operation, so that when the contact surface of the conductive block 58 and the electrode wire returns to the initial contact surface, the contact part of the electrode wire and the conductive block 58 has a certain interval from the last contact part, which satisfies the maximum utilization of the conductive block 58, solves the problems of complicated surface changing of the conductive block 58 and low utilization efficiency of the conductive block 58, and further improves the processing efficiency of wire cutting and the service life of the conductive block 58.

[0043] Please refer to Figures 4-6 The conductive assembly comprises a mounting seat 51, an electrode rod 52 and mounting nuts 53; the mounting seat 51 is fixedly connected with the moving end of the three-axis combined module 2 or the frame 1; a hole through which the electrode rod 52 passes is formed in the mounting seat 51; the two mounting nuts 53 are threadedly connected with the electrode rod 52 and are distributed on the two sides of the mounting seat 51; the two mounting nuts 53 cooperate to tightly fix the electrode rod 52; and an insulating column is arranged between the electrode rod 52 and the mounting seat 51.

[0044] The rotating propulsion assembly comprises a lead screw 54, an adjusting block 55, a connecting plate 56 and a mini push cylinder 57; the end of the lead screw 54 is fixedly connected with the electrode rod 52; the adjusting block 55 is threadedly connected with the lead screw 54; a through hole for avoiding the lead screw 54 is formed in the connecting plate 56; the connecting plate 56 is rotationally connected with the adjusting block 55 through a bearing; the mini push cylinder 57 is fixedly connected with the mounting seat 51; the output end of the mini push cylinder 57 is fixedly connected with the connecting plate 56; and the adjusting block 55 is fixedly connected with the connecting block 59.

[0045] In the present application, when the contact position of the conductive block 58 with the electrode wire is worn, the extension and retraction of the piston of the mini push cylinder 57 is controlled, so that the mini push cylinder 57 can drive the axial displacement along the screw rod 54 through the connecting plate 56, and at the same time, the adjusting block 55 rotates around the screw rod 54, so that the automatic surface replacement of the conductive block 58 can be completed without stopping. Each time the surface replacement operation is performed, the connecting plate 56 drives the axial displacement along the screw rod 54 by a certain distance, so that when the contact surface of the conductive block 58 turns back to the initial contact surface, the contact position of the electrode wire with the conductive block 58 has a certain distance from the last contact position of the electrode wire with the conductive block 58, which meets the maximum utilization of the conductive block 58, solves the problems of complicated surface replacement of the conductive block 58 and low utilization efficiency of the conductive block 58, and further improves the processing efficiency of the wire cutting and the service life of the conductive block 58.

[0046] In the present embodiment, the screw rod 54 adopts a ball screw, so that the adjusting block 55 can smoothly rotate on the screw rod 54.

[0047] In the present embodiment, the fastener adopts a fastening bolt or a clamping block structure, etc. After the conductive block 58 is completely worn, the fastening bolt is screwed into the connecting block 59 through the conductive block 58, or the clamping block structure is clamped into the hole of the conductive block 58, so that the conductive block 58 can be replaced conveniently and quickly.

[0048] In the present embodiment, the conductive block 58 is a regular polygonal prism, and each side surface of the conductive block 58 is arranged in an arc shape, which can reduce the friction between the side surface of the conductive block 58 and the electrode wire when the conductive block 58 rotates, and when the conductive block 58 works, the electrode wire can stably contact the side surface of the conductive block 58.

[0049] In the present embodiment, the electrode rod 52, the mounting nut 53, the screw rod 54, the adjusting block 55, the connecting block 59 and the fastener all adopt conductive materials, such as copper, etc.; and the connecting plate 56 adopts an insulating material, such as organic glass.

[0050] In the present embodiment, the length and the pitch of the screw rod 54 depend on the shape and the length of the conductive block 58. The axial movement distance of the conductive block 58 also depends on the utilization efficiency requirement of the conductive block 58; for example, the pitch of the thread on the screw rod 54 is one millimeter, the conductive block 58 is a quadrangular prism, the prism height is ten millimeters, the adjusting block 55 rotates by ninety degrees each time, the conductive block 58 performs surface replacement once, and the conductive block 58 moves axially by zero point two five millimeters, when the conductive block 58 rotates one round, the conductive block 58 moves axially by one millimeter relative to the sleeve rack 1, the contact surface of the conductive block 58 turns back to the initial contact surface, and at this time, the axial length between the second scratch and the first scratch on the initial contact surface is one millimeter, and so on. One contact surface of the conductive block 58 can be operated ten times, which realizes the maximum utilization of the conductive block 58.

[0051] Please refer to Figure 3 The wire tension control mechanism 4 comprises fixed wheels 41, a movable wheel 42, a slide rod 43, a vertical moving push cylinder 44, a stop block 45, a vertical moving block 46 and a pressure sensor 47, a plurality of fixed wheels 41 are rotatably installed on the rack 1, the slide rod 43 is fixedly connected with the rack 1, the stop block 45 and the vertical moving block 46 are both limitingly and slidably connected with the slide rod 43, and the stop block 45 is located on the upper side of the vertical moving block 46, and the pressure sensor 47 is fixedly installed on the upper end of the vertical moving block 46; the vertical moving push cylinder 44 is fixedly connected with the rack 1, and the output end of the vertical moving push cylinder 44 is fixedly connected with the stop block 45; the movable wheel 42 is rotatably installed on the vertical moving block 46;

[0052] In the online cutting operation, the electrode wire is released from the wire storage cylinder, and the electrode wire is sequentially wound through each fixed wheel 41 and passes through the lower end of the movable wheel 42, the vertical moving block 46 can slide vertically under the limiting action of the slide rod 43, so that the movable wheel 42 realizes automatic tensioning of the electrode wire, and the stop block 45 is vertically moved under the limiting action of the slide rod 43 by controlling the vertical moving push cylinder 44, so that the stop block 45 presses down the vertical moving block 46, the active tensioning effect of the electrode wire can be realized, and the pressure reading between the stop block 45 and the vertical moving block 46 is obtained by the pressure sensor 47, so as to determine the size of the tensioning force;

[0053] In the traditional way, the start and stop points of the electrode wire passing and dismounting position are usually determined according to the set distance and fixed position, but the electrode wire itself has stress, and the electrode wire will also cause errors in length due to wear with use time, so that it needs to be continuously adjusted, and in the present application, the position of the stop block 45 can be controlled by monitoring the size of the tensioning force by the pressure sensor 47, the control of the upward stroke of the vertical moving block 46 is realized, and the downward movement of the vertical moving block 46 is given, so as to realize the real-time control of the tensioning force of the electrode wire, and the continuous adjustment of the electrode wire tension in use can be effectively solved by adjusting the software algorithm.

[0054] In the online cutting operation, if the conductive block 58 is worn, the tension of the electrode wire is easy to be unstable, causing the vertical moving block 46 to have the tendency of up and down swing, so if the pressure sensor 47 has unstable reading in a certain time, the mini push cylinder 57 is controlled to push the adjusting block 55 to move, so that the conductive block 58 automatically changes the surface, and then if the pressure sensor 47 still has unstable reading, an alarm signal is sent to the central control of the equipment.

[0055] Please refer to Figures 7-11The automatic threading mechanism 6 comprises a vertical linear module 61, a mounting frame 62, an upper wire feeding assembly 63 and a lower wire feeding assembly 64. The vertical linear module 61 is fixedly installed at the moving end of the wire tension control mechanism 4. The moving end of the vertical linear module 61 and the lower end of the rack 1 are both fixedly installed with the mounting frame 62. The upper and lower mounting frames 62 are respectively installed with the upper wire feeding assembly 63 and the lower wire feeding assembly 64. The electrode wire between the upper wire feeding assembly 63 and the lower wire feeding assembly 64 constitutes a cutting section for wire cutting operation.

[0056] The upper wire feeding assembly 63 comprises a wire feeding assembly, a movable wire guide pipe 6311 and a pipe clamping assembly. The wire feeding assembly is installed on the mounting frame 62. The movable wire guide pipe 6311 is slidably installed on the mounting frame 62. The pipe clamping assembly is installed on the mounting frame 62. The pipe clamping assembly is used for fixing the movable wire guide pipe 6311 to prevent precision error caused by sliding gap.

[0057] The pipe clamping assembly comprises a clamping block 6312 and a clamping push cylinder 6313. The clamping push cylinder 6313 is fixedly connected with the mounting frame 62. The output end of the clamping push cylinder 6313 is fixedly installed with the clamping block 6312. The clamping block 6312 is provided with a groove matched with the movable wire guide pipe 6311. In this embodiment, the clamping push cylinder 6313 is a single-channel pneumatic cylinder. The movable wire guide pipe 6311 can be tightly fixed on the mounting frame 62 by pushing the clamping block 6312 through the clamping push cylinder 6313.

[0058] The lower wire feeding assembly 64 comprises a wire feeding assembly, an eye die 641 and a wire guide wheel 642. The wire feeding assembly of the lower wire feeding assembly 64 is the same as that of the upper wire feeding assembly 63. The eye die 641 is fixedly connected with the mounting frame 62. The wire guide wheel 642 is rotatably connected with the mounting frame 62. The wire guide wheel 642 is used for guiding the electrode wire from vertical state to horizontal state.

[0059] In this embodiment, the mounting frames 62 on the upper and lower sides are both provided with a water flushing channel and a gas blowing channel. The gas blowing channel is used for blowing gas to the side surface of the electrode wire to ensure smoothness in the hole and improve the success rate of threading. The water flushing channel is used for flushing water to the electrode wire to meet the functions of heat dissipation and cooling, conductive medium and chip removal during processing.

[0060] The wire feeding assembly comprises a movable wire guide pipe 6311, a fixed wire feeding assembly, a movable wire feeding assembly and a power device. The fixed wire guide pipe 6310 is fixedly connected with the mounting frame 62 and located between the fixed wire feeding assembly and the movable wire feeding assembly. The movable wire guide pipe 6311 is located at the lower side of the fixed wire guide pipe 6310 and coaxially arranged with the fixed wire guide pipe 6310. The movable wire guide pipe 6311 is provided with a groove on the side surface for avoiding the fixed wire feeding assembly and the movable wire feeding assembly to make them cooperate to convey the electrode wire. The power device is used for providing wire feeding power for the fixed wire feeding assembly and the movable wire feeding assembly.

[0061] The power device comprises a motor 631 and a driving gear 632, the motor 631 is fixedly connected with the mounting frame 62, and the output end of the motor 631 is fixedly installed with the driving gear 632;

[0062] The fixed wire feeding assembly comprises a driving gear 633 and a driving conveying wheel 634, the driving gear 633 is rotatably connected with the mounting frame 62, the driving conveying wheel 634 is fixedly connected with the driving gear 633, and the driving gear 633 is meshingly connected with the driving gear 632;

[0063] The movable wire feeding assembly comprises a driven gear 635, a driven conveying wheel 636, a swing rod 637, a spring 638 and a split and combination push cylinder 639, one end of the swing rod 637 is rotatably connected with the mounting frame 62, the other end of the swing rod 637 and the mounting frame 62 are fixedly installed with the spring 638; the split and combination push cylinder 639 is fixedly connected with the mounting frame 62, and the output end of the split and combination push cylinder 639 is used for pushing the swing rod 637; the middle part of the swing rod 637 is rotatably installed with the driven gear 635, the driven conveying wheel 636 is fixedly connected with the driven gear 635, and the driven gear 635 is meshingly connected with the driving gear 633;

[0064] In the application, the mounting frame 62 on the upper side is controlled to move downward by the vertical linear module 61, so that the movable wire guide pipe 6311 approaches the eye die 641, the motor 631 of the wire conveying assembly drives the driving gear 632 to rotate, and then drives the driving gear 633 and the driven gear 635 to rotate, the electrode wire is controlled to move under the cooperation of the driving conveying wheel 634 and the driven conveying wheel 636, and sequentially passes through the movable wire guide pipe 6311 and the eye die 641, and then passes through the wire guide wheel 642 and is pulled out from the cooperation of the driving conveying wheel 634 and the driven conveying wheel 636 of the other wire conveying assembly, so that the automatic wire pulling effect is realized, after the wire pulling is completed, the split and combination push cylinder 639 pushes the swing rod 637 to rotate, so that the driving conveying wheel 634 and the driven conveying wheel 636 are separated and release the electrode wire, so that the electrode wire can smoothly perform the cutting operation.

[0065] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the same; although the foregoing embodiments of the present application have been described in detail, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An electrode wire feeding device with tension adjustment function, comprising a frame (1) and an automatic wire threading mechanism (6), characterized in that: A wire tension control mechanism (4) is installed on the left side of the upper end of the frame (1), and a three-axis combination module (2) is fixedly installed on the right side of the upper end of the frame (1). Multiple guide wheels (3) are installed vertically on the moving end of the three-axis combination module (2). There are two self-controlled conductive mechanisms (5). One self-controlled conductive mechanism (5) is installed on the upper end of the frame (1) and located between the guide wheels (3), and the other self-controlled conductive mechanism (5) is installed on the lower end of the frame (1). The two self-controlled conductive mechanisms (5) cooperate to transmit the processing current to the electrode wire. The self-controlled conductive mechanism (5) includes a conductive component, a rotary propulsion component, a conductive block (58) and a connecting block (59). The conductive component is fixedly connected to the moving end of the three-axis combination module (2) or the frame (1). The rotary propulsion component is installed on the conductive component. The connecting block (59) is fixedly installed on the moving end of the rotary propulsion component. The connecting block (59) is detachably connected to the conductive block (58) through a connector. The conductive component includes a mounting base (51), an electrode rod (52), and mounting nuts (53). The mounting base (51) is fixedly connected to the moving end of the three-axis combination module (2) or the frame (1). The mounting base (51) has a hole through which the electrode rod (52) passes. Two mounting nuts (53) are threaded to the electrode rod (52) and distributed on both sides of the mounting base (51). The two mounting nuts (53) work together to press and fix the electrode rod (52). An insulating post is placed between the electrode rod (52) and the mounting base (51). The wire tension control mechanism (4) includes a fixed wheel (41), a movable wheel (42), a slide rod (43), a vertical shift cylinder (44), a stop block (45), a vertical shift block (46), and a pressure sensor (47). Several fixed wheels (41) are rotatably mounted on the frame (1). The slide rod (43) is fixedly connected to the frame (1). The stop block (45) and the vertical shift block (46) are both limited and slidably connected to the slide rod (43). The stop block (45) is located on the upper side of the vertical shift block (46). The pressure sensor (47) is fixedly mounted on the upper end of the vertical shift block (46). The vertical shift cylinder (44) is fixedly connected to the frame (1). The output end of the vertical shift cylinder (44) is fixedly connected to the stop block (45). The movable wheel (42) is rotatably mounted on the vertical shift block (46). The automatic wire threading mechanism (6) includes a vertical linear module (61), a mounting frame (62), an upper wire feeding assembly (63), and a lower wire feeding assembly (64). The vertical linear module (61) is fixedly installed on the moving end of the wire tension control mechanism (4). The moving end of the vertical linear module (61) and the lower end of the frame (1) are both fixedly installed with mounting frames (62). The upper wire feeding assembly (63) and the lower wire feeding assembly (64) are respectively installed on the mounting frames (62) on the upper and lower sides. The electrode wire between the upper wire feeding assembly (63) and the lower wire feeding assembly (64) forms a cutting section for wire cutting operations.

2. The electrode wire feeding device with tension adjustment function according to claim 1, characterized in that, The rotary propulsion assembly includes a lead screw (54), an adjusting block (55), a connecting plate (56), and a mini pusher cylinder (57). The end of the lead screw (54) is fixedly connected to the electrode rod (52), and the adjusting block (55) is threadedly connected to the lead screw (54). The connecting plate (56) has a through hole for avoiding the lead screw (54), and the connecting plate (56) is rotatably connected to the adjusting block (55) through a bearing. The mini pusher cylinder (57) is fixedly connected to the mounting base (51), and the output end of the mini pusher cylinder (57) is fixedly connected to the connecting plate (56). The adjusting block (55) is fixedly connected to the connecting block (59).

3. The electrode wire feeding device with tension adjustment function according to claim 1, characterized in that, The conductive block (58) is a regular polygonal prism, and each side of the conductive block (58) is set to be arc-shaped.

4. The electrode wire feeding device with tension adjustment function according to claim 1, characterized in that, The upper wire feeding assembly (63) includes a wire feeding assembly, a movable wire guide tube (6311), and a tube clamping assembly. The wire feeding assembly is mounted on the mounting frame (62). The movable wire guide tube (6311) is mounted on the mounting frame (62) and can slide up and down. The tube clamping assembly is mounted on the mounting frame (62) and is used to fix the movable wire guide tube (6311) to prevent the movable wire guide tube (6311) from causing accuracy errors due to sliding gaps.

5. The electrode wire feeding device with tension adjustment function according to claim 4, characterized in that, The lower wire feeding assembly (64) includes a wire feeding assembly, an eye mold (641), and a wire guide wheel (642). The wire feeding assembly structure of the lower wire feeding assembly (64) and the upper wire feeding assembly (63) is the same. The eye mold (641) is fixedly connected to the mounting frame (62), and the wire guide wheel (642) is rotatably connected to the mounting frame (62). The wire guide wheel (642) is used to guide the vertical electrode wire to a horizontal state.

6. The electrode wire feeding device with tension adjustment function according to claim 5, characterized in that, The wire feeding assembly includes a movable wire guide tube (6311), a fixed wire feeding assembly, a movable wire feeding assembly, and a power unit mounted on a mounting frame (62). The fixed wire guide tube (6310) is fixedly connected to the mounting frame (62) and located between the fixed wire feeding assembly and the movable wire feeding assembly. The movable wire guide tube (6311) is located below the fixed wire guide tube (6310), and the two are coaxially arranged. The movable wire guide tube (6311) has a slot on its side to avoid the fixed wire feeding assembly and the movable wire feeding assembly so that the two cooperate to feed the electrode wire. The power unit is used to provide wire feeding power for the fixed wire feeding assembly and the movable wire feeding assembly.

7. The electrode wire feeding device with tension adjustment function according to claim 6, characterized in that, The movable wire feeding assembly includes a wire feeding structure, a rocker arm (637), a spring (638), and a split-opening push cylinder (639). One end of the rocker arm (637) is rotatably connected to the mounting frame (62), and the other end of the rocker arm (637) is fixedly installed with the spring (638) between it and the mounting frame (62). The split-opening push cylinder (639) is fixedly connected to the mounting frame (62), and the output end of the split-opening push cylinder (639) is used to push the rocker arm (637). The wire feeding structure is installed on the rocker arm (637).

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