Automatic threading machine and threading method

Abstract

The automatic threading machine 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, and the upper end of the lead screw is rotationally connected with the lifting guide rod in a penetrating mode; a fixed plate is fixedly mounted on the side surface of the fixed platform; an air cylinder is fixedly mounted on the fixed plate and is in driving connection with a telescopic rod; a guide wire lifting table is fixedly mounted 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 hollow wire guide needle head is sleeved with the wire guide nozzle in a sliding manner. The guide wire hollow needle head is assisted in vertically descending, the guide wire stability and accuracy of the guide wire hollow needle head are improved, the automation degree is high, and manual operation is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of automatic wire threading machines, in particular to an automatic wire threading machine and a wire threading method. Background Art

[0002] The working principle of the medium-speed wire automatic threading machine is to realize the automatic drilling and conveying process of molybdenum wire (electrode wire) through a precise control system and an 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 automatic threading machine uses a photoelectric sensor to detect the 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 feeding mechanism. During the automatic wire threading process, the wire threader is accurately aligned with the position of the small hole, and the molybdenum wire is quickly passed through the small hole through the action of pressure and current, and the subsequent conveying and positioning are completed.

[0003] For example, the Chinese patent authorization publication number CN118808805A is an automatic wire threading machine for medium-speed wire, including a workbench, the workbench including a table body, a thread rolling mechanism is arranged at one end of the table body, a pulley assembly is arranged on one side of the workbench located at the thread rolling mechanism, and an arm assembly is arranged on the end of the workbench located at the pulley assembly away from the thread rolling mechanism. Both ends of the table body located at the position of the thread rolling mechanism are provided with traction grooves. After working, the cylinder pulls the auxiliary roller to move through the rotating seat, so that the main roller and the auxiliary roller change from a fitted state to a non-fitting and separated state, so that there is a gap between the two. The end of the molybdenum wire is placed on the side wall of the auxiliary roller close to the main roller. After working, the cylinder drives the auxiliary roller to move toward the position of the main roller until the side walls of the main roller and the auxiliary roller fit together, and clamps the excess end of the molybdenum wire; this method of fixing the molybdenum wire does not require cutting the excess part of the molybdenum wire, thereby achieving the effect of adaptive clamping and avoiding unnecessary waste caused by multiple cutting.

[0004] However, the above-mentioned prior art solution has the following defects: the upper wire threading arm and the lower receiving arm are far apart and there is a certain distance between them and the material. During the wire threading process, the stability and accuracy of the wire threading are difficult to ensure, resulting in low wire threading efficiency. In some cases, manual intervention is still required, which increases labor costs.

[0005] Therefore, we propose an automatic wire threading machine and a wire threading method, so as to solve the above-mentioned problems. Summary of the invention

[0006] The object of the present invention is to provide an automatic wire threading machine and a wire threading method to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions: an automatic wire threading machine, comprising: a machine platform, wherein a molybdenum wire storage mechanism, a stand and a double-axis transfer platform are sequentially arranged on the upper surface of the machine platform; The vertical frame is provided with a wire receiving arm and a wire threading arm which are perpendicular to each other; The threading arm comprises a fixed tripod, which is fixedly connected to the moving end of the automatic linear drive mechanism, a fixed platform is fixedly installed on the side of the fixed tripod, the fixed platform is slidably connected to the lifting guide rod, a servo motor is fixedly installed on the upper end of the lifting guide rod, a driving gear is installed on the output end of the servo motor, a screw rod is arranged on one side of the lifting guide rod, the upper end of the screw rod rotates and penetrates the lifting guide rod, a gear is fixedly installed on the upper end of the screw rod, the gear is meshed with the driving gear of the servo motor, and the lower end of the screw rod is threadedly connected to the fixed platform; A lifting seat is fixedly installed at the lower end of the fixed platform, and a hollow needle of the guide wire is fixedly clamped in the lifting seat; A fixed plate is fixedly installed on the side of the fixed platform, a cylinder is fixedly installed on the fixed plate, the cylinder drives the telescopic rod, a guide wire lifting platform is fixedly installed on the lower end of the telescopic rod, a guide wire nozzle is centrally arranged on the guide wire lifting platform, and the guide wire nozzle is slidably sleeved on the hollow needle head of the guide wire.

[0008] Preferably, the wire threading receiving arm is horizontally arranged, the wire threading arm is vertically arranged, the wire threading receiving arm is located below the wire threading arm, and the wire threading receiving arm wire receiving port and the wire threading arm wire outlet port are on the same axial direction.

[0009] Preferably, a wire tightening mechanism is provided on the side of the stand, and the wire tightening mechanism is located between the wire threading arm and the molybdenum wire storage mechanism.

[0010] Preferably, the molybdenum wire storage mechanism comprises 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 move reciprocatingly in a linear manner.

[0011] Preferably, an extension arm is fixedly mounted on the upper end of the vertical frame, an automatic linear drive mechanism is arranged 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.

[0012] Preferably, a wire guide wheel is installed on the side of the fixed platform, and the wire guide wheel receives the molybdenum wire from the wire tightening mechanism and guides it into the hollow needle of the wire guide.

[0013] A wire threading method for an automatic wire threading machine comprises the following steps: S1. Align the material with the molybdenum wire hole, fix the material on the double-axis transfer platform, calibrate the material position through the double-axis transfer platform, and make the wire threading hole accurately align with the wire guide nozzle; S2, wire guide positioning, the lifting guide rod is driven to move downward, directly driving the lifting seat to descend, and indirectly driving the wire guide nozzle to descend, and the wire guide nozzle is against the material opening to complete the wire guide positioning; S3, punching, the lifting guide rod drives the lifting guide rod down again, inserts the wire guide hollow needle through the lifting seat and penetrates the material hole, the synchronous cylinder drives the telescopic rod to retreat, and the wire guide nozzle moves relative to the wire guide hollow needle, so that the wire guide nozzle always rests on the material opening; S4, receiving, the hollow needle of the guide wire penetrates the material and docks with the wire threading receiving arm to complete the threading and guiding of the molybdenum wire.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The material is fixed on the dual-axis transfer platform, and then the position is calibrated and aligned with the wire guide nozzle. The lifting guide rod is driven to move downward, directly driving the lifting seat to descend, and indirectly driving the wire guide nozzle to descend. The wire guide nozzle is against the material opening to complete the wire guide positioning. The lifting guide rod drives the lifting guide rod to descend again, and the hollow wire guide needle is inserted into and penetrates the material hole through the lifting seat. The synchronous cylinder drives the telescopic rod to retract, so that the wire guide nozzle is displaced relative to the hollow wire guide needle, so that the wire guide nozzle is always against the material opening, assisting the vertical descent of the hollow wire guide needle, and improving the stability and accuracy of the wire guide of the hollow wire guide needle. The degree of automation is high and manual operation is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a rear view of the present invention; Figure 3 It is a structural schematic diagram of the neutral frame, molybdenum wire storage mechanism and extension arm of the present invention; Figure 4 It is a structural schematic diagram of the wire threading arm in the present invention; Figure 5 This is a disassembled diagram of the wire threading arm structure in the present invention.

[0016] In the figure: 1. Machine; 2. Double-axis transfer platform; 3. Stand; 31. Wire tightening 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 tripod; 603. Servo motor; 604. Screw rod; 605. Gear; 606. Fixed platform; 607. Wire guide wheel; 608. Lifting seat; 609. Wire guide hollow needle; 610. Cylinder; 611. Fixed plate; 612. Telescopic rod; 613. Wire guide lifting platform; 614. Wire guide nozzle; 7. Wire threading receiving arm. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-5 , the present invention provides a technical solution: an automatic wire threading machine, comprising: a machine platform 1, a molybdenum wire storage mechanism 4, a stand 3 and a double-axis transfer platform 2 are sequentially arranged on the upper surface of the machine platform 1; A wire threading receiving arm 7 and a wire threading arm 6 are arranged perpendicular to each other on the stand 3. The wire threading receiving arm 7 is arranged horizontally, and the wire threading arm 6 is arranged vertically. The wire threading receiving arm 7 is located below the wire threading arm 6, and the wire threading receiving arm 7 and the wire threading arm 6 have a wire receiving port on the same axis. The molybdenum wire starts from the molybdenum wire storage mechanism 4 and enters the wire threading arm 6 . The wire threading arm 6 passes the molybdenum wire through the material and is received by the wire threading receiving arm 7 , and then returns to the molybdenum wire storage mechanism 4 .

[0019] A wire tightening mechanism 31 is disposed on the side of the stand 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 threading.

[0020] The molybdenum wire storage mechanism 4 includes an automatic linear displacement mechanism 42, on which an automatic wire winding mechanism 41 is driven. The automatic linear displacement mechanism 42 drives the automatic wire winding mechanism 41 to move back and forth linearly, so that the molybdenum wire returned by the wire receiving arm 7 is always perpendicular to the automatic wire winding mechanism 41, which is convenient for the compact storage of the molybdenum wire.

[0021] An extension arm 5 is fixedly installed on the upper end of the stand 3, and an automatic linear drive mechanism 51 is arranged 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 wire threading arm 6, driving the wire threading arm 6 to move horizontally in a straight line.

[0022] The threading arm 6 includes a fixed tripod 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 tripod 602, and 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, and a driving gear is installed on the output end of the servo motor 603. A screw rod 604 is arranged on one side of the lifting guide rod 601, and the upper end of the screw rod 604 rotates and penetrates the lifting guide rod 601. A gear 605 is fixedly installed on the upper end of the screw rod 604, and the gear 605 is meshed with the driving gear of the servo motor 603 to realize the automatic rotation of the screw rod 604; The lower end of the screw rod 604 is threadedly connected to the fixed platform 606. During the rotation of the screw rod 604, the fixed platform 606 is driven to move downward along the lifting guide rod 601. A lifting seat 608 is fixedly installed at the lower end of the fixed platform 606, and a guide wire hollow needle 609 is fixedly clamped in the lifting seat 608. A guide wire wheel 607 is installed on the side of the fixed platform 606, and the guide wire wheel 607 receives the molybdenum wire from the wire tightening mechanism 31 and guides it into the guide wire hollow needle 609; During the threading process, the fixed platform 606 descends, driving the lifting seat 608 to descend, driving the wire guide hollow needle 609 to pass through the prefabricated hole of the material, and then docking with the threading receiving arm 7 to complete the threading.

[0023] A fixed plate 611 is fixedly installed on the side of the fixed platform 606, and a cylinder 610 is fixedly installed on the fixed plate 611. The cylinder 610 drives the telescopic rod 612, and a guide wire lifting platform 613 is fixedly installed on the lower end of the telescopic rod 612. A guide wire nozzle 614 is centrally arranged on the guide wire lifting platform 613, and the guide wire nozzle 614 is slidably sleeved on the guide wire hollow needle 609.

[0024] When the guide wire hollow needle 609 descends to thread the wire, the cylinder 610 drives the telescopic rod 612 to move upward relative to the lifting seat 608, so that the guide wire nozzle 614 slides relatively along the guide wire hollow needle 609.

[0025] According to the above mechanism, a method for automatically threading a wire threading machine is implemented, and the steps are as follows: S1, aligning the holes of the material and the molybdenum wire, fixing the material on the dual-axis transfer platform 2, calibrating the position of the material through the dual-axis transfer platform 2, and making the wire threading hole accurately align with the wire guide nozzle 614.

[0026] S2, wire guide positioning, the lifting guide rod 610 is driven to move downward, directly driving the lifting seat 608 to descend, and indirectly driving the wire guide nozzle 614 to descend, and the wire guide nozzle 614 is against the material opening to complete the wire guide positioning.

[0027] S3, punching, the lifting guide rod 610 drives the lifting guide rod 610 down again, inserts the guide wire hollow needle 609 into and penetrates the material hole through the lifting seat 608, and the synchronous cylinder 610 drives the telescopic rod 612 to retreat, and the guide wire nozzle 614 moves relative to the guide wire hollow needle 609, so that the guide wire nozzle 614 always rests on the material opening.

[0028] S4, receiving, the wire guide hollow needle 609 penetrates the material and docks with the wire threading receiving arm 7 to complete the threading and leading of the molybdenum wire.

[0029] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic wire threading machine, comprising: A machine platform (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 platform (1); The invention is characterized in that: the vertical frame (3) is provided with a wire receiving arm (7) and a wire threading arm (6) which are perpendicular to each other; The threading arm (6) comprises a fixed tripod (602), the fixed tripod (602) 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 tripod (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 driving gear is installed on the output end of the servo motor (603), a screw rod (604) is arranged on one side of the lifting guide rod (601), the upper end of the screw rod (604) is rotatably connected to the lifting guide rod (601), a gear (605) is fixedly installed on the upper end of the screw rod (604), the gear (605) is meshed with the driving gear of the servo motor (603), and the lower end of the screw rod (604) is threadedly connected to the fixed platform (606); A lifting seat (608) is fixedly mounted at the lower end of the fixed platform (606), and a guide wire hollow needle (609) is fixedly clamped inside the lifting seat (608); A fixed plate (611) is fixedly mounted on the side of the fixed platform (606), a cylinder (610) is fixedly mounted on the fixed plate (611), the cylinder (610) drives and connects the telescopic rod (612), a guide wire lifting platform (613) is fixedly mounted on the lower end of the telescopic rod (612), a guide wire nozzle (614) is centrally arranged on the guide wire lifting platform (613), and the guide wire nozzle (614) is slidably sleeved on the guide wire hollow needle (609); The wire threading receiving arm (7) is arranged horizontally, and the wire threading arm (6) is arranged vertically. The wire threading receiving arm (7) is located below the wire threading arm (6), and the wire threading receiving opening of the wire threading receiving arm (7) and the wire threading opening of the wire threading arm (6) are on the same axial direction; A wire tightening mechanism (31) is disposed on the side of the stand (3), and the wire tightening mechanism (31) is located between the wire threading arm (6) and the molybdenum wire storage mechanism (4).

2. An automatic wire threading machine according to claim 1, characterized in that: The molybdenum wire storage mechanism (4) comprises an automatic linear displacement mechanism (42), an automatic wire winding mechanism (41) is driven and arranged on the automatic linear displacement mechanism (42), and the automatic linear displacement mechanism (42) drives the automatic wire winding mechanism (41) to move back and forth linearly.

3. An automatic wire threading machine according to claim 1, characterized in that: An extension arm (5) is fixedly mounted on the upper end of the stand (3); an automatic linear drive mechanism (51) is disposed 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); and the movable end of the automatic linear drive mechanism (51) is fixedly connected to the wire threading arm (6).

4. The automatic wire threading machine according to claim 1, characterized in that: A wire guide wheel (607) is installed on the side of the fixed platform (606), and the wire guide wheel (607) receives the molybdenum wire from the wire tightening mechanism (31) and guides it into the wire guide hollow needle (609).

5. A wire threading method for an automatic wire threading machine according to any one of claims 1 to 4, characterized in that: The method comprises the following steps: S1, aligning the holes of the material and the molybdenum wire, fixing the material on the biaxial transfer platform (2), calibrating the position of the material through the biaxial transfer platform (2), and making the wire threading hole accurately aligned with the wire guide nozzle (614); S2, wire guide positioning, the lifting guide rod (610) is driven to move downward, directly driving the lifting seat (608) to descend, and indirectly driving the wire guide nozzle (614) to descend, and the wire guide nozzle (614) is against the material opening to complete the wire guide positioning; S3, perforation, the lifting guide rod (610) drives the lifting guide rod (610) to descend again, and the guide wire hollow needle (609) is inserted into and penetrates the material hole through the lifting seat (608), and the synchronous cylinder (610) drives the telescopic rod (612) to retreat, and the guide wire nozzle (614) is displaced relative to the guide wire hollow needle (609), so that the guide wire nozzle (614) always contacts the material opening; S4, receiving, after the wire guide hollow needle (609) penetrates the material, it docks with the wire threading receiving arm (7), completing the threading and guiding of the molybdenum wire.

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