Rotary wire feeding mechanism

Abstract

The utility model discloses a rotary wire feeding mechanism which comprises a gantry support, a molybdenum wire feeding assembly and a molybdenum wire recycling assembly are arranged on the gantry support in parallel up and down, a three-axis moving assembly is installed on the upper portion of the gantry support, and a wire guiding assembly is installed on the three-axis moving assembly. Molybdenum wires of the molybdenum wire feeding assembly are guided out through the wire guiding assembly and then recycled through the molybdenum wire recycling assembly, the wire guiding assembly comprises a box body, a linear driving assembly, a rotary wire guiding module and a wire outlet nozzle, the box body is fixedly installed on the three-axis moving assembly, the linear driving assembly is arranged in the box body, and the wire outlet nozzle is fixedly installed at the end of the box body. The rotary wire guide module is rotationally installed at the end, located on the wire outlet nozzle, of the box body. The linear driving assembly drives the rotary wire guide module to rotate. The wire feeding device is high in automation degree in the whole wire feeding process, the wire feeding action is accurately completed, and the use efficiency of the wire cutting machine is improved.

Description

Technical Field

[0001] This utility model relates to the field of wire cutting technology, specifically a rotary wire feeding mechanism. Background Technology

[0002] Wire electrical discharge machining (EDM) is a machine tool that uses pulsed power to generate high temperatures between a wire electrode (molybdenum wire, copper wire, galvanized copper wire, etc.) and a metal workpiece, melting or vaporizing the metal material. The movement path of the electrode wire is controlled by a computer to achieve precise cutting of complex shapes.

[0003] In existing wire EDM machines, the initial wire feeding of the electrode wire from the wire spool, around the guide wheel and guide tip, is typically done manually. Because the electrode wire is very thin, it can easily cut the skin, making the process very inconvenient. Therefore, we propose a rotary wire feeding mechanism to solve the aforementioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a rotary wire feeding mechanism to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a rotary wire feeding mechanism, comprising: a gantry support, wherein a molybdenum wire feeding assembly and a molybdenum wire recovery assembly are arranged parallel to each other on the upper and lower sides of the gantry support, a three-axis moving assembly is installed on the upper part of the gantry support, a wire guide assembly is installed on the three-axis moving assembly, and the molybdenum wire from the molybdenum wire feeding assembly is recovered by the molybdenum wire recovery assembly after being guided out by the wire guide assembly.

[0006] The wire guide assembly includes a housing, a linear drive assembly, a rotary wire guide module, and a wire outlet nozzle. The housing is fixedly mounted on a three-axis moving assembly. The linear drive assembly is installed inside the housing. The wire outlet nozzle is fixedly installed at one end of the housing. The rotary wire guide module is rotatably installed at one end of the housing located at the wire outlet nozzle. The linear drive assembly drives the rotary wire guide module to rotate.

[0007] Preferably, the linear drive assembly includes two sets of linear cylinders, with piston rods fixedly installed at the output ends of the two sets of linear cylinders. Hooks are installed at the ends of the piston rods, and buffer springs are sleeved on the hooks. The front ends of the two hooks are slidably connected to the transmission components. The buffer springs are located between the transmission components and the piston rods. Two guide grooves are opened at the upper ends of the two transmission components, and guide rods are slidably connected in the guide grooves. The guide rods are fixedly connected to the housing.

[0008] Preferably, a clamping member is integrally provided at the front end of one of the two transmission members, and a rack portion is integrally provided at the front end of the other.

[0009] Preferably, the rotating wire guide module comprises a connecting assembly, the connecting assembly is divided into left and right two parts, and is radially fixedly connected with an axially sliding shaft, the shaft is rotationally connected with the box body, a spring is sleeved on the shaft, the spring is located between the two parts of the connecting assembly, a first gear is fixedly installed on one side of the shaft, the first gear is engaged with a rack part, an open slot is formed in the upper part of the connecting assembly, two rollers are rotationally arranged in the open slot, and a clamping piece is inserted into the open slot and presses the rollers.

[0010] Preferably, the connecting assembly is provided with a side movable embedded positioning rod, and the positioning rod is fixedly installed in the box body.

[0011] Preferably, the connecting assembly is provided with a side movable embedded positioning rod, and the positioning rod is fixedly installed in the box body.

[0012] Preferably, the connecting assembly is provided with a side movable embedded positioning rod, and the positioning rod is fixedly installed in the box body.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] Through rotating and installing the rotating wire guide module at the front end of the wire guide assembly, the linear driving assembly is automatically driven, the rotating wire guide module is rotated and extended to clamp the molybdenum wire, then the three-axis moving assembly is moved to the molybdenum wire recycling assembly, the initial wire feeding action is completed, after the wire feeding is completed, the rotating wire guide module is automatically split and separated from the molybdenum wire, and is rotated and recycled into the wire guide assembly, the wire feeding is fully automatic, the wire feeding action is accurately completed, and the use efficiency of the wire cutting machine is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the utility model;

[0016] Figure 2 It is a structural schematic view of the molybdenum wire recycling assembly and the molybdenum wire feeding assembly in the utility model;

[0017] Figure 3 It is a structural schematic view of the three-axis moving assembly in the utility model;

[0018] Figure 4 It is a structural schematic view of the wire guide assembly in the utility model;

[0019] Figure 5It is the structure schematic view of the rotary wire guide module in the utility model;

[0020] Figure 6 It is the exploded view of the wire guide assembly in the utility model;

[0021] Figure 7 It is the structure schematic view of the rotary wire guide module in the utility model;

[0022] Figure 8 It is the partial structure exploded view of the rotary wire guide module and the linear drive assembly in the utility model.

[0023] In the drawing: 1, gantry support; 2, molybdenum wire recovery assembly; 21, first sliding rail; 22, first servo module; 23, first motor speed reducer; 24, first wire storage cylinder; 25, first wire guide plate; 26, wire guide nozzle; 3, molybdenum wire feeding assembly; 31, second sliding rail; 32, second servo module; 33, second motor speed reducer; 34, second wire storage cylinder; 35, second wire guide plate; 36, wire guide wheel; 4, three-axis moving assembly; 41, Z-axis moving module; 42, V-axis moving module; 43, U-axis moving module; 5, wire guide assembly; 51, box body; 52, linear drive assembly; 521, linear cylinder; 5211, crochet needle; 5212, buffer spring; 5213, piston rod; 522, transmission part; 5221, guide groove; 5222, rack part; 5223, clamping part; 523, guide rod; 53, rotary wire guide module; 531, connecting assembly; 5311, open slot; 5312, roller; 532, rotating shaft; 533, first gear; 534, motor; 535, fixing seat; 536, wire feeding wheel; 537, positioning rod; 538, wire guide pipe; 54, wire outlet nozzle; 541, fixed wire guide seat; 542, conductive assembly; 543, wire guide nozzle. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] Please refer to Figures 1-8 The utility model provides a kind of technical scheme: a rotary wire feeding mechanism, comprising: gantry support 1, molybdenum wire feeding assembly 3 and molybdenum wire recovery assembly 2 are arranged in parallel on gantry support 1, three-axis moving assembly 4 is installed on the upper portion of gantry support 1, wire guide assembly 5 is installed on three-axis moving assembly 4, the molybdenum wire of molybdenum wire feeding assembly 3 is recovered by molybdenum wire recovery assembly 2 after being guided out by wire guide assembly 5, and wire feeding work is completed.

[0026] The guide wire assembly 5 comprises a box body 51, a linear drive assembly 52, a rotating guide wire module 53 and a wire outlet nozzle 54. The box body 51 is fixedly installed on the three-axis moving assembly 4. The linear drive assembly 52 is arranged in the box body 51. The wire outlet nozzle 54 is fixedly installed at the end of the box body 51. The rotating guide wire module 53 is rotatably installed at one end of the wire outlet nozzle 54. The linear drive assembly 52 drives the rotating guide wire module 53 to rotate, so that the rotating guide wire module 53 is stored in the box body 51 in a non-wire feeding state.

[0027] The linear drive assembly 52 comprises two groups of linear cylinders 521. The output ends of the two groups of linear cylinders 521 are fixedly installed with piston rods 5213. The end portions of the piston rods 5213 are installed with hook needles 5211. The hook needles 5211 are sleeved with buffer springs 5212. The front ends of the two hook needles 5211 are slidably connected with transmission members 522. The buffer springs 5212 are located between the transmission members 522 and the piston rods 5213. The buffer springs 5212 push the transmission members 522 to move by driving the piston rods 5213 to move through the linear cylinders 521. When the linear cylinders 521 are reset, the transmission members 522 are first reset elastically through the buffer springs 5212, and then the hook needles 5211 pull the transmission members 522 to reset.

[0028] Two guide grooves 5221 are formed in the upper ends of the two transmission members 522. A guide rod 523 is slidably connected in the guide grooves 5221. The guide rod 523 is fixedly connected with the box body 51. The transmission members 522 keep linear motion through the cooperation of the guide rod 523 and the guide grooves 5221.

[0029] The front end of one of the two transmission members 522 is integrally provided with a clamping member 5223, and the front end of the other is integrally provided with a rack portion 5222.

[0030] The rotating guide wire module 53 comprises a connecting assembly 531. The connecting assembly 531 is divided into left and right two parts, and is radially fixedly and axially slidably connected with a rotating shaft 532. The rotating shaft 532 is rotatably connected with the box body 51. A spring is sleeved on the rotating shaft 532. The spring is located between the two parts of the connecting assembly 531. In a stress-free state of the connecting assembly 531, the spring separates the left and right two parts of the connecting assembly 531.

[0031] A first gear 533 is fixedly installed on one side of the rotating shaft 532. The first gear 533 is engaged with the rack portion 5222. The movement of the transmission member 522 drives the rack portion 5222 to move linearly, drives the first gear 533 to rotate, and makes the connecting assembly 531 rotate out of the box body 51. When the transmission member 522 is reset, the connecting assembly 531 is rotatably stored in the box body 51.

[0032] The upper part of the connecting assembly 531 is provided with an open slot 5311, two rollers 5312 are rotatably arranged in the open slot 5311, the clamping piece 5223 is inserted into the open slot 5311 and presses the rollers 5312, and the two parts of the connecting assembly 531 are driven to approach.

[0033] The side of the connecting assembly 531 movably embeds a positioning rod 537, the positioning rod 537 is fixedly installed in the box body 51, when the connecting assembly 531 is rotated to this position, the connecting assembly 531 is blocked and positioned by the positioning rod 537, and at this time, the connecting assembly 531 is opened to be perpendicular to the box body 51.

[0034] The lower end of the connecting assembly 531 is fixedly installed with a fixed seat 535, the fixed seat 535 is also divided into two parts and is fixedly installed on the two connecting assemblies 531, the fixed seat 535 is fixedly installed with a motor 534, the front surfaces of the two parts of the fixed seat 535 are rotationally connected with wire feeding wheels 536, the wire feeding wheels 536 are coaxially fixedly connected with gears, the output end of the motor 534 is drivingly connected with one of the gears, when the connecting assembly 531 is clamped by the clamping piece 5223, the two parts of the fixed seat 535 approach, so that the two wire feeding wheels 536 clamp the molybdenum wire, and the coaxial gears of the two wire feeding wheels 536 are meshed, through the driving of the motor 534, the two meshed gears are used to make the two wire feeding wheels 536 relatively rotate, and the molybdenum wire is drawn out.

[0035] The fixed seat 535 is fixedly installed with a wire guide pipe 538 below the two wire feeding wheels 536, the wire guide pipe 538 is also divided into two parts along with the fixed seat 535, the molybdenum wire enters the wire guide pipe 538 after passing through the two wire feeding wheels 536 and is guided out by the wire guide pipe 538.

[0036] The wire outlet nozzle 54 comprises a fixed wire seat 541, the fixed wire seat 541 is fixedly installed at the front end of the box body 51, the fixed wire seat 541 is inserted with a conductive assembly 542 at the side, the fixed wire seat 541 is fixedly installed with a wire guide nozzle 543 at the lower end, the wire guide nozzle 543 is aligned with the wire feeding wheel 536, so that the molybdenum wire sent out by the molybdenum wire feeding assembly 3 passes through the fixed wire seat 541, the conductive assembly 542, the wire guide nozzle 543, the wire feeding wheel 536 and the wire guide pipe 538 in sequence.

[0037] The molybdenum wire feeding assembly 3 comprises symmetrical second sliding rails 31, the second sliding rails 31 are fixedly installed with the gantry support 1, the second sliding rails 31 are slidingly provided with a second motor reducer 33 and a second wire storage cylinder 34, the second sliding rails 31 are provided with a second servo module 32 at the side, the second servo module 32 drives the second motor reducer 33 and the second wire storage cylinder 34 to move linearly along the second sliding rails 31, the second motor reducer 33 is drivingly connected with the second wire storage cylinder 34, so that the second wire storage cylinder 34 rotates at a constant speed and sends out the molybdenum wire from the second wire storage cylinder 34;

[0038] The molybdenum wire feeding assembly 3 further comprises a second wire guide plate 35 fixedly installed on the gantry support 1, and a wire guide wheel 36 rotatably installed on the side of the second wire guide plate 35, which receives the molybdenum wire from the second wire storage cylinder 34 and changes the direction of the molybdenum wire to be fed into the wire guide assembly 5.

[0039] The molybdenum wire recycling assembly 2 comprises a first sliding rail 21 symmetrically fixedly installed on the gantry support 1, a first motor reducer 23 and a first wire storage cylinder 24 slidingly arranged on the first sliding rail 21, and a first servo module 22 arranged on the side of the first sliding rail 21, which drives the first motor reducer 23 and the first wire storage cylinder 24 to move linearly along the first sliding rail 21, and the first motor reducer 23 is drivingly connected to the first wire storage cylinder 24 to rotate at a constant speed to recycle the molybdenum wire from the wire guide assembly 5.

[0040] The molybdenum wire recycling assembly 2 further comprises a first wire guide plate 25, on which a wire guide wheel 36 is also installed, and a wire guide nozzle 26 is further installed on the upper end of the first wire guide plate 25 to receive the molybdenum wire from the wire guide assembly 5 and change the direction of the molybdenum wire to be guided into the first wire storage cylinder 24 for recycling.

[0041] The three-axis moving assembly 4 comprises a Z-axis moving module 41, a V-axis moving module 42 and a U-axis moving module 43, wherein the fixed part of the Z-axis moving module 41 is fixedly installed on the gantry support 1, the moving part of the Z-axis moving module 41 is fixedly connected to the V-axis moving module 42, the moving part of the V-axis moving module 42 is fixedly connected to the U-axis moving module 43, and the moving part of the U-axis moving module 43 is fixedly connected to the wire guide assembly 5, so as to realize the three-axis moving of the wire guide assembly 5 along the U, V and Z axes.

[0042] Working principle: when feeding the wire, the transmission member 522 with the rack part 5222 of the straight-line driving assembly 52 moves first to drive the entire rotary wire guide module 53 to rotate and extend, so as to lead the molybdenum wire out of the molybdenum wire feeding assembly 3, through the wire guide nozzle 54 and the rotary wire guide module 53, and then the transmission member 522 with the clamping member 5223 of the straight-line driving assembly 52 moves again to drive the two parts of the rotary wire guide module 53 to merge, so that the wire feeding wheel 536 clamps the molybdenum wire and the wire guide tube 538 covers the molybdenum wire, and the entire wire guide assembly 5 is driven by the three-axis moving assembly 4 to descend, so that the wire guide tube 538 is inserted into the wire guide nozzle 26, and the molybdenum wire is recycled by the molybdenum wire recycling assembly 2.

[0043] Then the transmission member 522 with the clamping member 5223 resets, the two connecting assemblies 531 are separated, so that the wire feeding wheel 536 no longer clamps the molybdenum wire and the wire guide tube 538 no longer covers the molybdenum wire, and then the transmission member 522 with the rack part 5222 resets to drive the rotary wire guide module 53 to rotate and disengage from the molybdenum wire and be stored in the box body 51, at this time, the wire cutting action of the molybdenum wire can be smoothly performed.

[0044] Those aspects of the description which are not otherwise fully described are deemed to be part of the prior art to those of ordinary skill in the art.

[0045] While the embodiments of the present application have been shown and described, it is to be understood that the embodiments can be varied, modified, substituted and changed by those skilled in the art without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotary wire feeder comprising: The gantry support (1) is provided with a molybdenum wire feeding assembly (3) and a molybdenum wire recycling assembly (2) arranged in parallel from top to bottom, a three-axis moving assembly (4) is installed on the upper part of the gantry support (1), a wire guide assembly (5) is installed on the three-axis moving assembly (4), and the molybdenum wire of the molybdenum wire feeding assembly (3) is recycled by the molybdenum wire recycling assembly (2) after being guided out of the wire guide assembly (5); The wire guide assembly (5) comprises a box body (51), a linear drive assembly (52), a rotating wire guide module (53) and a wire outlet nozzle (54), the box body (51) is fixedly installed on the three-axis moving assembly (4), the linear drive assembly (52) is arranged in the box body (51), the wire outlet nozzle (54) is fixedly installed at the end of the box body (51), the rotating wire guide module (53) is rotatably installed at one end of the box body (51) located at the wire outlet nozzle (54), and the linear drive assembly (52) drives the rotating wire guide module (53) to rotate.

2. A rotary wire feeder as claimed in claim 1, wherein The linear drive assembly (52) comprises two groups of linear cylinders (521), the output ends of the two groups of linear cylinders (521) are fixedly installed with piston rods (5213), the end portions of the piston rods (5213) are installed with hook needles (5211), the hook needles (5211) are sleeved with buffer springs (5212), the front ends of the two hook needles (5211) are slidably connected with transmission members (522), the buffer springs (5212) are located between the transmission members (522) and the piston rods (5213), two guide grooves (5221) are formed in the upper ends of the two transmission members (522), guide rods (523) are slidably connected in the guide grooves (5221), and the guide rods (523) are fixedly connected with the box body (51).

3. A rotary wire feeder as claimed in claim 2 wherein, The front end of one of the two transmission members (522) is integrally provided with a clamping piece (5223), and the front end of the other is integrally provided with a rack portion (5222).

4. A rotary wire feeder as claimed in claim 1, wherein, The rotating wire guide module (53) comprises a connecting assembly (531), the connecting assembly (531) is divided into left and right two parts, and an axial sliding connection shaft (532) is fixedly arranged in the two parts in a radial direction, the shaft (532) is rotatably connected with the box body (51), a spring is sleeved on the shaft (532), the spring is located between the two parts of the connecting assembly (531), a first gear (533) is fixedly installed on one side of the shaft (532), the first gear (533) is engaged with the rack portion (5222), an open groove (5311) is formed in the upper part of the connecting assembly (531), two rollers (5312) are rotatably arranged in the open groove (5311), the clamping piece (5223) is inserted into the open groove (5311) and presses the rollers (5312).

5. A rotary wire feeder as claimed in claim 4 wherein, The connecting assembly (531) is laterally movably embedded with a positioning rod (537), and the positioning rod (537) is fixedly installed in the box body (51).

6. A rotary wire feeder as claimed in claim 5 wherein, The lower end of the connecting assembly (531) is fixedly installed with a fixed seat (535), which is also divided into two parts and is fixed on the two connecting assemblies (531) respectively. A motor (534) is fixedly installed on the fixed seat (535). The front surfaces of the two parts of the fixed seat (535) are rotationally connected with wire feeding wheels (536). The wire feeding wheels (536) are coaxially fixedly connected with gears. The output end of the motor (534) is drivingly connected with one of the gears. A wire guide pipe (538) is fixedly installed below the fixed seat (535) and between the two wire feeding wheels (536). The wire guide pipe (538) is also divided into two parts and is fixed on the fixed seat (535).

7. A rotary wire feeder as claimed in claim 1, wherein, The wire outlet nozzle (54) comprises a fixed wire guide seat (541), which is fixedly installed at the front end of the box body (51). The side surface of the fixed wire guide seat (541) is inserted with a conductive assembly (542). The lower end of the fixed wire guide seat (541) is fixedly installed with a wire guide nozzle (543), which is aligned with the wire feeding wheel (536).

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