Automatic threading machine

Abstract

The utility model discloses an automatic threading machine which comprises a machine table, a molybdenum wire storage mechanism, a vertical frame and a double-shaft transfer platform are sequentially arranged on the upper surface of the machine table, a threading receiving arm and a threading arm which are perpendicular to each other are arranged on the vertical frame, a lead screw is arranged on one side of a lifting guide rod, the upper end of the lead screw is rotatably connected with the lifting guide rod in a penetrating mode, and a gear is fixedly installed at the upper end of the lead screw. A fixing plate is fixedly installed on the side face of the fixing platform, an air cylinder is fixedly installed on the fixing plate, the air cylinder is in driving connection with a telescopic rod, a guide wire lifting table is fixedly installed at the lower end of the telescopic rod, a guide wire nozzle is arranged in the middle of the guide wire lifting table, and the guide wire nozzle is arranged on the guide wire hollow needle in a sliding and sleeving mode. The guide wire hollow needle head is assisted in vertically descending, the stability and accuracy of the guide wire of the guide wire hollow needle head are improved, the automation degree is high, and manual operation is reduced.

Description

Technical Field

[0001] This utility model relates to the field of automatic threading machine technology, specifically an automatic threading machine. Background Technology

[0002] The working principle of the medium-speed wire EDM automatic wire threading machine is to realize the automatic threading and conveying process of molybdenum wire (electrode wire) through a precise control system and automated mechanical structure. This process is highly automated, which significantly improves production efficiency and reduces errors caused by manual operation. Specifically, the medium-speed wire EDM automatic wire threading machine uses photoelectric sensors to detect small holes on the workpiece and transmits the signal to the control system. The control system then activates the automatic wire threading mechanism and the wire conveying mechanism. During the automatic wire threading process, the wire threader is precisely aligned with the position of the small hole. Through the action of pressure and current, the molybdenum wire is quickly passed through the small hole and the subsequent conveying and positioning are completed.

[0003] For example, Chinese Patent Publication No. CN118808805A describes an automatic wire threading machine for medium-speed wires, including a worktable. The worktable includes a table body, with a wire rolling mechanism at one end. A pulley assembly is located on one side of the worktable near the wire rolling mechanism, and a support arm assembly is located at the end of the worktable away from the wire rolling mechanism. Traction grooves are carved at both ends of the table body near the wire rolling mechanism. After the cylinder operates, it pulls the auxiliary roller to move via a rotating seat, causing the main roller and auxiliary roller to change from a close contact state to a distant, non-close contact state, creating a gap between them. The end of the molybdenum wire is placed on the side wall of the auxiliary roller near the main roller. After the cylinder operates, it drives the auxiliary roller to move towards the position of the main roller until the side walls of the main roller and auxiliary roller are in contact, clamping the excess end of the molybdenum wire. This method of fixing the molybdenum wire eliminates the need to cut off the excess part of the molybdenum wire, achieving an adaptive clamping effect and avoiding unnecessary waste caused by multiple cuts.

[0004] However, the above-mentioned existing technical solutions have the following drawbacks: the distance between the upper threading arm and the lower receiving arm is relatively far, and there is a certain distance between them and the material. During the threading process, the stability and accuracy of threading are difficult to guarantee, resulting in low threading efficiency. In some cases, manual intervention is still required, which increases labor costs.

[0005] Therefore, we propose an automatic threading machine to solve the problems mentioned above. Utility Model Content

[0006] The purpose of this invention is to provide an automatic threading machine to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an automatic wire threading machine, comprising: a machine base, wherein a molybdenum wire storage mechanism, a support frame, and a dual-axis transfer platform are sequentially arranged on the upper surface of the machine base;

[0008] The upright frame is equipped with mutually perpendicular wire-threading receiving arms and wire-threading arms;

[0009] The threading arm includes a fixed bracket, which is fixedly connected to the moving end of an automatic linear drive mechanism. A fixed platform is fixedly installed on the side of the fixed bracket. A lifting guide rod is slidably connected to the fixed platform. A servo motor is fixedly installed on the upper end of the lifting guide rod. A drive gear is installed on the output end of the servo motor. A lead screw is provided on one side of the lifting guide rod. The upper end of the lead screw is rotatably connected to the lifting guide rod. A gear is fixedly installed on the upper end of the lead screw. The gear meshes with the drive gear of the servo motor. The lower end of the lead screw is threadedly connected to the fixed platform.

[0010] A lifting seat is fixedly installed at the lower end of the fixed platform, and a hollow needle tip for the guide wire is fixedly clamped inside the lifting seat.

[0011] A fixing plate is fixedly installed on the side of the fixed platform, and a cylinder is fixedly installed on the fixing plate. The cylinder drives the telescopic rod. A guide wire lifting platform is fixedly installed at the lower end of the telescopic rod. A guide wire nozzle is set in the center of the guide wire lifting platform, and the guide wire nozzle is slidably sleeved on the hollow guide wire needle.

[0012] Preferably, the thread receiving arm is horizontally arranged, the threading arm is vertically arranged, the thread receiving arm is located below the threading arm, and the thread receiving port of the thread receiving arm and the thread outlet of the threading arm are on the same axis.

[0013] Preferably, a wire tightening mechanism is provided on the side of the support frame, and the wire tightening mechanism is located between the wire threading arm and the molybdenum wire storage mechanism.

[0014] Preferably, the molybdenum wire storage mechanism includes an automatic linear displacement mechanism, on which an automatic wire winding mechanism is driven, and the automatic linear displacement mechanism drives the automatic wire winding mechanism to reciprocate linearly.

[0015] Preferably, an extension arm is fixedly installed on the upper end of the support frame, and an automatic linear drive mechanism is provided at the front end of the extension arm. The driving direction of the automatic linear drive mechanism is consistent with the direction of the automatic linear displacement mechanism, and the moving end of the automatic linear drive mechanism is fixedly connected to the wire threading arm.

[0016] Preferably, a guide wheel is installed on the side of the fixed platform. The guide wheel receives the molybdenum wire from the wire tensioning mechanism and guides it into the hollow guide needle.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] The material is fixed on the dual-axis conveyor platform, then the position is calibrated and aligned with the guide tip. The lifting guide rod is driven to move downward, directly driving the lifting seat to descend, and indirectly driving the guide tip to descend. The guide tip abuts against the material opening, completing the guide tip positioning. The lifting guide rod is driven to descend again, inserting the hollow guide tip into the material hole through the lifting seat. Simultaneously, the cylinder drives the telescopic rod to retract, causing the guide tip to shift relative to the hollow guide tip, ensuring that the guide tip always abuts against the material opening. This assists the hollow guide tip in descending vertically, improving the stability and accuracy of the hollow guide tip, resulting in a high degree of automation and reducing manual operation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a rear view of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the central frame, molybdenum wire storage mechanism and extension arm of this utility model;

[0022] Figure 4 This is a schematic diagram of the wire-threading arm in this utility model;

[0023] Figure 5 This is a disassembled view of the wire-threading arm part of the present invention.

[0024] In the diagram: 1. Machine base; 2. Dual-axis transfer platform; 3. Stand; 31. Wire tensioning mechanism; 4. Molybdenum wire storage mechanism; 41. Automatic wire winding mechanism; 42. Automatic linear displacement mechanism; 5. Extension arm; 51. Automatic linear drive mechanism; 6. Wire threading arm; 601. Lifting guide rod; 602. Fixed foot; 603. Servo motor; 604. Lead screw; 605. Gear; 606. Fixed platform; 607. Guide wheel; 608. Lifting seat; 609. Hollow guide needle; 610. Cylinder; 611. Fixed plate; 612. Telescopic rod; 613. Guide lifting platform; 614. Guide nozzle; 7. Wire threading receiving arm. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-5This utility model provides a technical solution: an automatic wire threading machine, comprising: a machine base 1, wherein a molybdenum wire storage mechanism 4, a stand 3 and a dual-axis transfer platform 2 are sequentially arranged on the upper surface of the machine base 1;

[0027] The upright frame 3 is provided with a wire receiving arm 7 and a wire receiving arm 6 that are perpendicular to each other. The wire receiving arm 7 is set horizontally and the wire receiving arm 6 is set vertically. The wire receiving arm 7 is located below the wire receiving arm 6, and the wire receiving port of the wire receiving arm 7 and the wire output port of the wire receiving arm 6 are on the same axis.

[0028] The molybdenum wire starts from the molybdenum wire storage mechanism 4 and enters the wire threading arm 6. After the wire threading arm 6 passes the molybdenum wire through the material, it is received by the wire threading receiving arm 7 and then returns to the molybdenum wire storage mechanism 4.

[0029] A wire tightening mechanism 31 is provided on the side of the support frame 3. The wire tightening mechanism 31 is located between the wire threading arm 6 and the molybdenum wire storage mechanism 4, and is used for tightening the molybdenum wire after it is threaded.

[0030] The molybdenum wire storage mechanism 4 includes an automatic linear displacement mechanism 42, on which an automatic winding mechanism 41 is driven. The automatic linear displacement mechanism 42 drives the automatic winding mechanism 41 to move back and forth in a linear motion, so that the molybdenum wire returning from the wire receiving arm 7 is always perpendicular to the automatic winding mechanism 41, which facilitates the tight storage of the molybdenum wire.

[0031] An extension arm 5 is fixedly installed on the upper end of the support frame 3. An automatic linear drive mechanism 51 is set at the front end of the extension arm 5. The driving direction of the automatic linear drive mechanism 51 is consistent with the direction of the automatic linear displacement mechanism 42. The moving end of the automatic linear drive mechanism 51 is fixedly connected to the threading arm 6, which can drive the threading arm 6 to move horizontally in a straight line.

[0032] The threading arm 6 includes a fixed bracket 602, which is fixedly connected to the moving end of the automatic linear drive mechanism 51. A fixed platform 606 is fixedly mounted on the side of the fixed bracket 602. The fixed platform 606 is slidably connected to the lifting guide rod 601. A servo motor 603 is fixedly mounted on the upper end of the lifting guide rod 601. A drive gear is mounted on the output end of the servo motor 603. A lead screw 604 is provided on one side of the lifting guide rod 601. The upper end of the lead screw 604 is rotatably connected to the lifting guide rod 601. A gear 605 is fixedly mounted on the upper end of the lead screw 604. The gear 605 meshes with the drive gear of the servo motor 603 to realize the automatic rotation of the lead screw 604.

[0033] The lower end of the lead screw 604 is threadedly connected to the fixed platform 606. During the rotation of the lead screw 604, the fixed platform 606 is driven to move downward along the lifting guide rod 601.

[0034] A lifting seat 608 is fixedly installed at the lower end of the fixed platform 606. The hollow guide needle 609 is fixedly clamped inside the lifting seat 608. A guide wheel 607 is installed on the side of the fixed platform 606. The guide wheel 607 receives the molybdenum wire from the wire tensioning mechanism 31 and guides it into the hollow guide needle 609.

[0035] During the threading process, the lowering of the fixed platform 606 causes the lifting seat 608 to descend, driving the hollow needle 609 through the pre-made hole in the material and connecting with the threading receiving arm 7 to complete the threading.

[0036] A fixing plate 611 is fixedly installed on the side of the fixing platform 606. A cylinder 610 is fixedly installed on the fixing plate 611. The cylinder 610 drives the telescopic rod 612. A guide wire lifting platform 613 is fixedly installed at the lower end of the telescopic rod 612. A guide wire nozzle 614 is centrally located on the guide wire lifting platform 613. The guide wire nozzle 614 is slidably sleeved on the hollow guide wire needle 609.

[0037] During the descent and threading process of the hollow guide needle 609, the cylinder 610 drives the telescopic rod 612 to move upward relative to the lifting seat 608, causing the guide nozzle 614 to slide relative to the hollow guide needle 609.

[0038] Working principle: The material is fixed on the dual-axis transfer platform 2, and then the position is calibrated and aligned with the guide nozzle 614. The lifting guide rod 610 is driven to move downward, directly driving the lifting seat 608 to descend, and indirectly driving the guide nozzle 614 to descend. The guide nozzle 614 abuts against the opening of the material, completing the guide wire positioning. The lifting guide rod 610 is driven to descend again, and the hollow guide needle 609 is inserted into and passes through the material hole through the lifting seat 608. Simultaneously, the cylinder 610 drives the telescopic rod 612 to retract, causing the guide nozzle 614 to move relative to the hollow guide needle 609, so that the guide nozzle 614 always abuts against the opening of the material, assisting the hollow guide needle 609 to descend vertically, improving the stability and accuracy of the guide wire. After the hollow guide needle 609 passes through the material, it docks with the wire receiving arm 7 to complete the wire threading of the molybdenum wire.

[0039] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic threading machine, comprising: The machine base (1) is provided with a molybdenum wire storage mechanism (4), a stand (3) and a dual-axis transfer platform (2) in sequence on the upper surface of the machine base (1). The feature is that: the upright frame (3) is provided with a wire receiving arm (7) and a wire threading arm (6) that are perpendicular to each other. The threading arm (6) includes a fixed bracket (602), which is fixedly connected to the moving end of the automatic linear drive mechanism (51). A fixed platform (606) is fixedly installed on the side of the fixed bracket (602). The fixed platform (606) is slidably connected to the lifting guide rod (601). A servo motor (603) is fixedly installed on the upper end of the lifting guide rod (601). A drive gear is installed on the output end of the servo motor (603). A lead screw (604) is provided on one side of the lifting guide rod (601). The upper end of the lead screw (604) is rotatably connected to the lifting guide rod (601). A gear (605) is fixedly installed on the upper end of the lead screw (604). The gear (605) meshes with the drive gear of the servo motor (603). The lower end of the lead screw (604) is threadedly connected to the fixed platform (606). The lower end of the fixed platform (606) is fixedly installed with a lifting seat (608), and the hollow needle of the guide wire (609) is fixedly clamped inside the lifting seat (608). The fixed platform (606) is fixedly mounted on a fixed plate (611) on the side. A cylinder (610) is fixedly mounted on the fixed plate (611). The cylinder (610) drives the telescopic rod (612). A guide wire lifting platform (613) is fixedly mounted at the lower end of the telescopic rod (612). A guide wire nozzle (614) is centrally located on the guide wire lifting platform (613). The guide wire nozzle (614) is slidably sleeved on the hollow guide wire needle (609).

2. The automatic threading machine according to claim 1, characterized in that, The thread receiving arm (7) is set horizontally, the threading arm (6) is set vertically, the thread receiving arm (7) is located below the threading arm (6), and the thread receiving port of the thread receiving arm (7) and the thread outlet of the threading arm (6) are on the same axis.

3. The automatic threading machine according to claim 1, characterized in that, The stand (3) is provided with a wire tensioning mechanism (31) on its side, which is located between the wire threading arm (6) and the molybdenum wire storage mechanism (4).

4. An automatic threading machine according to claim 1, characterized in that, The molybdenum wire storage mechanism (4) includes an automatic linear displacement mechanism (42), an automatic wire winding mechanism (41) is driven on the automatic linear displacement mechanism (42), and the automatic linear displacement mechanism (42) drives the automatic wire winding mechanism (41) to reciprocate linearly.

5. An automatic threading machine according to claim 1, characterized in that, An extension arm (5) is fixedly installed on the upper end of the stand (3). An automatic linear drive mechanism (51) is set at the front end of the extension arm (5). The driving direction of the automatic linear drive mechanism (51) is consistent with the direction of the automatic linear displacement mechanism (42). The moving end of the automatic linear drive mechanism (51) is fixedly connected to the threading arm (6).

6. An automatic threading machine according to claim 1, characterized in that, The fixed platform (606) is equipped with a wire guide wheel (607) on its side. The wire guide wheel (607) receives the molybdenum wire from the wire tensioning mechanism (31) and guides it into the hollow wire guide needle (609).

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