Automatic yarn clamping device for a bobbin

Abstract

The utility model discloses a kind of automatic silk clamping devices of silk storage cylinder, including silk storage cylinder and silk clamping mechanism, silk storage cylinder is rotatably installed on rack, silk clamping mechanism includes support seat, silk clamping nozzle and elastic pressure piece, support seat is located at the outer surface of silk storage cylinder;Silk clamping nozzle middle part is rotatably connected in support seat, one end is silk clamping part, the other end is driving part;Elastic pressure piece acts on silk clamping nozzle, makes silk clamping part inside and be located on the outer surface of silk storage cylinder, driving part is lifted;Drive device is also installed on rack, its power shaft can be slidably telescopic along the axial direction of silk storage cylinder, shaft end is equipped with push head, push head inside and driving part outside are formed by sliding fit through slope;When power shaft drives push head to extend, push head is contacted and pushes driving part to deflect to silk storage cylinder side through slope, to further drive silk clamping part to lift from the outer surface of silk storage cylinder;When power shaft drives push head to retract, elastic pressure piece drives silk clamping part to deflect to silk storage cylinder side, re-locates on the outer surface of silk storage cylinder, realizes automatic silk clamping function.

Description

Technical Field

[0001] This utility model relates to the field of wire cutting equipment technology, and in particular to an automatic wire clamping device for a wire storage spool. Background Technology

[0002] Wire EDM equipment mainly includes a machine bed, wire spool, and wire rack, with the electrode wire wound on the spool. The wire clamping device on the spool is a key component to ensure stable winding of the electrode wire and achieve precise machining. Existing wire clamping devices have many shortcomings. Some devices use manual screwdrivers to clamp or remove the electrode wire, which is not only time-consuming and labor-intensive but also prone to damaging the threaded holes on the spool. Other automatic wire clamping devices, such as the utility model patent with authorization announcement number CN 221047487 U, although achieving automation, have limitations in their structural design: the driving force acts directly on the contact part, forming a rigid opposition with the spring force on the same straight line and at the same contact point, resulting in localized force concentration and large instantaneous impact force, which can easily cause deformation of the clamping parts or wear of the contact part, and long-term use will reduce the clamping accuracy. Utility Model Content

[0003] The purpose of this utility model is to overcome the defects of the prior art. This utility model provides an automatic wire clamping device for a wire storage drum. The pusher, by cooperating with the inclined surface of the drive unit, can push the drive unit to deflect it toward the wire storage drum side, so that the wire clamping part is lifted away from the outer surface of the wire storage drum.

[0004] The technical solution of this utility model is as follows: An automatic wire clamping device for a wire storage drum includes a wire storage drum and a wire clamping mechanism. The wire storage drum is rotatably mounted on a frame. The wire clamping mechanism includes a support base, a wire clamping nozzle mounted on the support base, and an elastic pressure member. The support base is located on the outer surface of the wire storage drum. The middle part of the wire clamping nozzle is rotatably connected to the support base, with one end being the wire clamping part and the other end being the driving part. The wire clamping part of the wire clamping nozzle is pressed against the outer surface of the wire storage drum by the elastic pressure member, and the driving part is lifted. A driving device is mounted on the frame, and the power shaft of the driving device can slide and extend outside the wire storage drum. A push head is provided at the end of the power shaft. The inner side of the push head and the outer side of the driving part are slidably engaged through an inclined surface. When the power shaft drives the push head to extend, the push head contacts and pushes the driving part towards the wire storage drum side through the inclined surface, thereby driving the wire clamping part to lift away from the outer surface of the wire storage drum. When the power shaft drives the push head to retract, the elastic pressure member drives the wire clamping part to deflect towards the wire storage drum side to press against the outer surface of the wire storage drum.

[0005] By adopting the above technical solution, automatic wire clamping is achieved. When it is necessary to clamp the electrode wire, the push head is extended by the power shaft. The push head, in cooperation with the inclined surface of the drive unit, can push the drive unit to deflect it toward the wire storage drum. The wire clamping nozzle rotates, causing the wire clamping part to be lifted away from the outer surface of the wire storage drum. At this time, the electrode wire can enter between the wire clamping part and the wire storage drum. Then, the power shaft drives the push head to retract. At this time, the elastic pressure member restores its deformation, driving the wire clamping part to deflect toward the wire storage drum. The wire clamping part is then pressed against the outer surface of the wire storage drum again, thus achieving the clamping of the electrode wire.

[0006] This device not only improves the automation level of wire clamping and reduces the intensity of manual labor, but also ensures a tight fit between the wire clamping part and the wire spool, thereby improving the accuracy of electrode wire winding and the stability of processing.

[0007] A further feature of this invention is that the support base is insulated from the wire storage drum, and the wire clamping nozzle is a conductive component. When the push head drives the wire clamping part to lift up, and the drive part deflects towards the wire storage drum side while maintaining an insulating gap, the signal generated by the contact between the electrode wire and the wire clamping part controls the power shaft of the drive device to retract.

[0008] By employing the aforementioned further configuration, the support base and the wire storage drum are insulated, and the wire clamping nozzle is mounted on the support base. When the push head drives the wire clamping part to lift, and the drive unit deflects towards the wire storage drum while maintaining an insulating gap, the wire clamping nozzle and the wire storage drum are insulated from each other, avoiding the problem of constant conductivity between them. At this time, when the electrode wire comes into contact with the conductive wire clamping part, an electrical signal is generated. Subsequently, the control system immediately controls the drive unit's power shaft to automatically retract, thereby achieving the clamping of the electrode wire by the wire clamping part. This design not only improves the automation and intelligence level of the wire clamping process but also ensures the accuracy and timeliness of the wire clamping action. Due to the use of insulation design and conductive signal control, this device enhances the overall safety and reliability while improving wire clamping accuracy.

[0009] A further feature of this invention is that the connecting part of the support base is connected to the wire storage drum by fasteners, and the connecting part is insulated from the wire storage drum and the fasteners.

[0010] With the above-mentioned further configuration, the connecting part of the support base is fixed to the wire storage drum with fasteners, and it is ensured that the connecting part, the wire storage drum and the fasteners are all insulated. This insulation design further enhances the safety of the device and prevents the unexpected flow of current.

[0011] A further feature of this invention is that the wire clamping part and the wire storage cylinder are magnetically attracted to each other.

[0012] With the above-mentioned further settings, the wire clamping part can be stably attracted to the wire storage drum by magnetic force, realizing a fast and accurate wire clamping action, and the wire clamping effect is better.

[0013] A further feature of this invention is that a receiving groove is provided on the outer side of the wire clamping part, and a magnetic element is embedded in the receiving groove, wherein the magnetic element is magnetically attracted to the wire storage cylinder.

[0014] With the above-mentioned further design, the receiving groove provides a stable installation position for the magnetic component. The magnetic component is embedded in the receiving groove to ensure that it will not fall off or shift. With this design, when the wire clamping part contacts the wire storage drum, the magnetic component can generate sufficient magnetic force to make the wire clamping part and the wire storage drum tightly attracted, further improving the stability and accuracy of wire clamping.

[0015] A further feature of this invention is that the wire clamping nozzle is connected to the support base via a rotating shaft, and the elastic pressure member is a torsion spring, which is wound around the rotating shaft with one end abutting against the support base and the other end abutting against the outside of the wire clamping part.

[0016] With the above-described further design, the wire clamping nozzle can rotate flexibly around the shaft, and the wire clamping part can fit tightly against the electrode wire under the action of the torsion spring, achieving effective clamping of the electrode wire. The torsion spring design not only provides a stable clamping force, but also plays a buffering role during the wire clamping process, preventing damage to the electrode wire due to excessive clamping force.

[0017] A further feature of this invention is that a snap-fit ​​groove is provided on the outer side of the wire clamping part, and the spring foot at the other end of the torsion spring abuts against the snap-fit ​​groove.

[0018] With this further design, the snap-fit ​​groove ensures that the other end of the torsion spring is stably fixed to the wire clamping part, preventing it from loosening or falling off during operation. This improves the connection strength between the torsion spring and the wire clamping part, thereby ensuring the stability and reliability of the wire clamping device during long-term use.

[0019] A further feature of this invention is that the power shaft of the drive device slides and extends along the axis parallel to the wire storage drum. Attached Figure Description

[0020] Figure 1 This is a structural diagram of a specific embodiment of the present utility model;

[0021] Figure 2 This is a structural diagram of one side of the wire clamping mechanism according to a specific embodiment of the present utility model;

[0022] Figure 3 This is a structural diagram of the wire clamping mechanism according to a specific embodiment of the present utility model;

[0023] Figure 4 This is a structural diagram of the pusher and wire clamping nozzle of a specific embodiment of the present utility model;

[0024] Figure 5 This is a structural diagram of the wire clamping nozzle according to a specific embodiment of the present utility model.

[0025] In the figure: 1. Wire storage cylinder; 2. Wire clamping mechanism; 21. Support base; 211. Connecting part; 22. Wire clamping nozzle; 221. Receiver groove; 2211. Snap-fit ​​groove; 2212. Drive part; 222. Elastic pressure member; 23. Frame; 3. Drive device; 4. Power shaft; 41. Push head; 5. Fastener; 6. Magnetic component; 7. Rotating shaft; 8. Inclined surface A. Detailed Implementation

[0026] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] like Figure 1-5 As shown, the present invention discloses an automatic wire clamping device for a wire storage spool, comprising a wire storage spool 1 and a wire clamping mechanism 2. The wire storage spool 1 is rotatably mounted on a frame 3. The wire clamping mechanism 2 includes a support base 21, a wire clamping nozzle 22 mounted on the support base, and an elastic pressure member 23. The support base 21 is disposed on the outer surface of the wire storage spool 1. The wire clamping nozzle 22 is rotatably connected to the support base 21 in the middle, with one end being a wire clamping part 221 and the other end being a driving part 222. The wire clamping part is used to clamp the electrode wire. The wire clamping part 221 of the wire clamping nozzle is pressed against the outer surface of the wire storage spool 1 by the elastic pressure member 23 and lifted by the driving part 222. The wire clamping nozzle 22 is connected to the support base 21 via a rotating shaft 8. The elastic pressure member 23 is a torsion spring, which is wound around the rotating shaft 8, with one end abutting against the support base 21 and the other end abutting against the outside of the wire clamping part 221. The outer side of the wire clamping part 221 is provided with a locking groove 2212, and the spring foot at the other end of the torsion spring abuts against the locking groove 2212. The elastic pressure member 23 can be a spring or a tension spring, and the tension spring can be provided between the outer side of the drive part and the support base. Of course, the elastic pressure member 23 can also abut against the wire storage drum and the drive part.

[0028] The frame 3 is equipped with a drive device 4, which is a telescopic electric cylinder or a pneumatic cylinder. The power shaft 41 of the drive device can slide and extend outside the wire storage drum along the axis parallel to the wire storage drum. The end of the power shaft 41 is provided with a push head 5, which is fixed or integrally mounted on the power shaft. The inner side of the push head 5 and the outer side of the drive part 222 are slidably engaged through the inclined surface A. The "inner side" is the side close to the wire storage drum. One of the push head and the drive part is provided with an inclined surface, or both are provided with inclined surfaces. When the power shaft 41 drives the push head 5 to extend, the push head 5 contacts and pushes the drive part 222 towards the wire storage drum 1 through the inclined surface, thereby driving the wire clamping part 221 to lift away from the outer surface of the wire storage drum 1. When the power shaft 41 drives the push head 5 to retract, the elastic pressure member 23 drives the wire clamping part 221 to deflect towards the wire storage drum 1 so as to abut against the outer surface of the wire storage drum 1.

[0029] Specifically, the support base 21 is insulated from the wire storage drum 1, and the wire clamping nozzle 22 is a conductive component. When the push head 5 drives the wire clamping part to lift, and the driving part deflects towards the wire storage drum 1 while maintaining an insulating gap, the signal generated by the contact between the electrode wire and the wire clamping part 221 controls the retraction of the power shaft 41 of the driving device. The connecting part 211 of the support base 21 is connected to the wire storage drum 1 by a fastener 6. The connecting part 211 is insulated from the wire storage drum 1, and the connecting part 211 is insulated from the fastener 6. Insulation is achieved through an insulating sleeve or an insulating pad. The fastener is a screw or a pin.

[0030] Specifically, the wire clamping part 221 is also magnetically attracted to the wire storage cylinder 1. The outer side of the wire clamping part 221 is provided with a receiving groove 2211, and a magnetic element 7 is embedded in the receiving groove 2211. The magnetic element 7 is magnetically attracted to the wire storage cylinder 1, and the wire storage cylinder is provided with a magnet that cooperates with the magnetic element, or the wire storage cylinder is a magnet.

[0031] The working principle of this utility model is as follows:

[0032] When the electrode wire needs to be clamped, the drive shaft of the drive device extends, and the pusher at the end of the drive shaft contacts and pushes the drive part of the wire clamping nozzle through an inclined surface, causing the drive part to gradually deflect towards the wire storage drum. The rotation of the wire clamping nozzle causes the wire clamping part to lift away from the outer surface of the wire storage drum, and the wire clamping nozzle no longer contacts the wire storage drum. At this time, the electrode wire can enter between the wire clamping part and the wire storage drum. The signal generated by the contact between the electrode wire and the wire clamping part controls the drive shaft of the drive device to retract. At this time, the elastic pressure member restores its deformation, driving the wire clamping part to deflect towards the wire storage drum, and the wire clamping part clamps the electrode wire onto the outer surface of the wire storage drum. At the same time, the wire clamping part and the wire storage drum are magnetically attracted to each other. Through the automatic wire clamping device of the wire storage drum of this utility model, the automatic clamping and releasing of the electrode wire is realized, improving the processing efficiency and the degree of automation.

[0033] It should be noted that in the description of this utility model, all directional indicators (such as up, down, forward, backward, etc.) are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0034] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a number" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "installation" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. An automatic wire clamping device for a wire storage drum, comprising a wire storage drum (1) and a wire clamping mechanism (2), wherein the wire storage drum (1) is rotatably mounted on a frame (3), and the wire clamping mechanism (2) comprises a support base (21), a wire clamping nozzle (22) mounted on the support base, and an elastic pressure member (23), wherein the support base (21) is disposed on the outer surface of the wire storage drum (1), and the middle part of the wire clamping nozzle (22) is rotatably connected to the support base (21), with one end being a wire clamping part (221) and the other end being a driving part (222), wherein the wire clamping part (221) of the wire clamping nozzle is pressed against the outer surface of the wire storage drum (1) by the elastic pressure member (23), and the driving part (222) is lifted, characterized in that, The frame (3) is equipped with a drive device (4). The power shaft (41) of the drive device can slide and extend outside the wire storage drum. The end of the power shaft (41) is provided with a push head (5). The inner side of the push head (5) and the outer side of the drive part (222) are in sliding fit through the inclined surface (A). When the power shaft (41) drives the push head (5) to extend, the push head (5) contacts and pushes the drive part (222) towards the wire storage drum (1) through the inclined surface, thereby driving the wire clamping part (221) to lift away from the outer surface of the wire storage drum (1). When the power shaft (41) drives the push head (5) to retract, the elastic pressure member (23) drives the wire clamping part (221) to deflect towards the wire storage drum (1) and abut against the outer surface of the wire storage drum (1).

2. The automatic wire clamping device for the wire storage spool according to claim 1, characterized in that, The support base (21) is insulated from the wire storage cylinder (1). The wire clamping nozzle (22) is a conductive component. When the push head (5) drives the wire clamping part to lift up and the drive part deflects towards the wire storage cylinder (1) while maintaining an insulating gap, the signal generated by the contact between the electrode wire and the wire clamping part (221) controls the power shaft (41) of the drive device to retract.

3. The automatic wire clamping device for the wire storage spool according to claim 2, characterized in that, The connecting part (211) of the bracket base (21) is connected to the wire storage cylinder (1) by a fastener (6). The connecting part (211) and the wire storage cylinder (1) are insulated from each other. The connecting part (211) and the fastener (6) are insulated from each other.

4. The automatic wire clamping device for a wire storage spool according to claim 1, 2, or 3, characterized in that, The wire clamping part (221) and the wire storage tube (1) are also magnetically attracted to each other.

5. The automatic wire clamping device for the wire storage spool according to claim 4, characterized in that, The outer side of the wire clamping part (221) is provided with a receiving groove (2211), and a magnetic element (7) is embedded in the receiving groove (2211). The magnetic element (7) is magnetically attracted to the wire storage cylinder (1).

6. The automatic wire clamping device for a wire storage spool according to claim 1, 2, or 3, characterized in that, The wire clamping nozzle (22) is connected to the support base (21) via the rotating shaft (8). The elastic pressure member (23) is a torsion spring, which is wound around the rotating shaft (8) with one end abutting against the support base (21) and the other end abutting against the outside of the wire clamping part (221).

7. The automatic wire clamping device for the wire storage spool according to claim 5, characterized in that, The outer side of the wire clamping part (221) is provided with a snap-fit ​​groove (2212), and the spring foot at the other end of the torsion spring abuts against the snap-fit ​​groove (2212).

8. The automatic wire clamping device for a wire storage spool according to claim 1, 2, or 3, characterized in that, The power shaft (41) of the drive device slides and extends along the axis parallel to the wire storage cylinder.

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