A 3D follow-up wire drawing machine pay-off rack

Abstract

The present application relates to the technical field of ultra-fine wire production, in particular to a 3D follow-up wire drawing machine pay-off rack. The pay-off rack comprises a shaft for mounting a wire drum, a support rod for supporting the shaft, the support rod being hinged at the middle section of the shaft, one end of the shaft being provided with a clamping plate for clamping the wire drum and a clamping nut connected to the end of the shaft by screwing, the other end of the shaft being connected to a driving rod through a universal joint, the driving rod being mounted on a rotating disc, the rotating disc being fixedly mounted on a rotating shaft, the rotating shaft being drivingly connected to a driving motor. The pay-off rack of the wire drawing machine is flexible and convenient to use, has small tension during wire paying-off and causes little damage to the wire.

Description

Technical Field

[0001] This invention relates to the field of ultra-micro filament production and manufacturing technology, specifically a 3D follow-up drawing machine wire feeding frame. Background Technology

[0002] Microfilament, or ultra-fine metal filament, is typically neatly wound onto a spool. The spool has a central cylinder with a slightly larger-diameter disc at each end to prevent the wire from slipping out. The microfilament is neatly wound layer by layer onto the cylinder between the two discs. During further processing, the spool needs to be rotated while the wire is being pulled out to prevent it from becoming tangled or knotted. However, because the diameter of the discs at both ends of the spool is usually larger than the diameter of the coil, it is difficult to avoid friction between the wire and the discs during the unwinding process. Since the diameter of the microfilament is very small, even slight friction can have a significant impact on its quality. Chinese Patent 2021214752216 discloses "A Metal Wire Pay-off Stand" (Publication No. CN215101198U). This pay-off stand horizontally mounts a spool on a bracket, with a tensioning wheel and a guide wheel above the spool. The metal wire emerges from the spool and passes sequentially around the tensioning wheel and guide wheel. The tensioning wheel automatically adjusts the friction during pay-off, eliminating the need for additional tensioning of the spool, making it more convenient. However, this type of metal wire pay-off stand can only be used on non-adjustable brackets, resulting in poor flexibility. Furthermore, during pay-off, the wire must pass through the tensioning wheel and guide wheel sequentially to change direction, subjecting the wire to significant tension, which can easily damage the wire. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides a 3D follow-up wire drawing machine wire feeding frame that is flexible and convenient to use, has low tension during wire feeding, and causes minimal damage to the wire.

[0004] The technical solution adopted by this invention to solve the technical problem is as follows:

[0005] The 3D follow-up wire drawing machine pay-off frame of the present invention includes a shaft for mounting the wire spool and a support rod for supporting the shaft. The support rod is hinged to the middle section of the shaft. One end of the shaft is provided with a clamping plate for holding the wire spool and a clamping nut connected to the end of the shaft by a thread. The other end of the shaft is connected to a drive rod through a universal joint. The drive rod is mounted on a turntable. The turntable is fixedly mounted on a rotating shaft. The rotating shaft is connected to a drive motor for transmission.

[0006] With this solution, the drive motor drives one end of the shaft to make a circular motion through the universal joint, so that the spool at the other end of the shaft makes a circular motion while releasing the thread in the spool. It is flexible and convenient to use, with low tension during thread release and minimal damage to the thread.

[0007] Preferably, the turntable is disc-shaped and has multiple mounting holes. The end of the drive rod has external threads, and the drive rod is inserted through the mounting holes on the turntable and fixedly installed by nuts located on both sides of the turntable.

[0008] This solution allows the drive rod to be installed in mounting holes at different positions, and the universal joint has different movement radii to accommodate different sizes of spools.

[0009] Preferably, the turntable includes a front panel and a rear panel arranged in parallel, with a gap between them. An annular sealing edge is fixedly provided around the edges of the front and rear panels. Both the front and rear panels have radially extending strip-shaped through holes. The drive rod is located in the strip-shaped through holes of the front and rear panels. An adjusting disc is mounted on the rotating shaft between the front and rear panels via bearings. The edge of the adjusting disc has multiple support points for supporting the drive rod. These support points are arc-shaped slots on the edge of the adjusting disc. The multiple support points are arranged in a ring around the axis of the rotating shaft, and the distance from each support point to the axis of the rotating shaft gradually increases or decreases. Adjacent support points have a smooth transition edge curve. The drive rod is provided with a spring that pulls it towards the rotating shaft. A driven gear is fixedly provided on one side of the adjusting disc. The driven gear is coaxial with the rotating shaft. A second driving gear, which is constantly meshed with the driven gear, is rotatably mounted on the front panel via bearings.

[0010] This solution allows for changing the radius of motion of the drive rod without disassembling it, which facilitates rapid adjustment of working parameters.

[0011] Preferably, the middle section of the shaft is provided with a U-shaped bend, and the upper end of the support rod is fixedly connected to a collar fitted on the U-shaped bend; the universal joint includes a ball head fixedly connected to the end of the shaft and a ball socket fixedly provided at the end of the drive rod, and the ball head is slidably installed in the ball socket.

[0012] This solution prevents displacement at the connection point between the support rod and the shaft, allowing for more flexible movement of the universal joint.

[0013] Preferably, the lower end of the support rod is provided with a lifting drive mechanism for driving the support rod to rise and fall.

[0014] This solution allows for adjustment of the height of the shaft support point, thereby changing the height of the bobbin.

[0015] Preferably, the rotating shaft is rotatably mounted on the gearbox via bearings, and a drive gear shaft parallel to the rotating shaft is installed in the gearbox. A first drive gear is fixedly mounted on the drive gear shaft, and a large gear that is constantly meshed with the first drive gear is fixedly mounted on the rotating shaft. The drive motor is connected to the drive gear shaft via a coupling.

[0016] This solution enables a reliable connection between the drive motor and the rotating shaft, and allows the rotating shaft to operate at a reasonable speed by properly setting the gear parameters.

[0017] Preferably, the lifting drive mechanism includes a rack disposed at the lower end of the support rod, a lifting gear that is constantly meshed with the rack, a worm gear that is coaxially disposed and fixedly connected with the lifting gear, a worm that is constantly meshed with the worm gear, and a lifting driven wheel fixedly connected to the end of the worm. The lifting driven wheel (36) is connected to the lifting motor for transmission.

[0018] This design enables bidirectional driving of the support rod's lifting and lowering, resulting in accurate positioning and good stability. Due to this structure, the wire drawing machine's feeder is flexible and convenient to use, with low tension during feed and minimal damage to the wire. Attached Figure Description

[0019] Figure 1 This is a cross-sectional structural diagram of an embodiment of the present invention.

[0020] Figure 2 yes Figure 1 A schematic diagram of the AA cross-sectional structure of the embodiment.

[0021] Figure 3 This is a schematic diagram of a planar structure of one embodiment of the turntable.

[0022] Figure 4 This is a schematic diagram of the planar structure of the adjustment disc.

[0023] Figure 5 This is a schematic diagram of the cross-section of the lifting slide rail and support rod 3. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions away from the geometric center of a specific component.

[0025] like Figure 1As shown, the 3D follow-up wire drawing machine pay-off frame of the present invention includes a shaft 2 for mounting a spool 1 and a support rod 3 for supporting the shaft 2. The spool 1 is fixedly mounted on the end of the shaft 2, and the support rod 3 is hinged to the middle section of the shaft 2. One end of the shaft 2 is provided with a clamping plate 4 for clamping the spool 1 and a clamping nut 5 connected to the end of the shaft 2 by threads. The disc-shaped clamping plate 4 is fixedly welded to the inner side of the clamping nut 5. When installing the spool 1, first remove the clamping nut 5, insert one end of the shaft 2 with external threads into the center hole of the spool 1, and then screw on and tighten the clamping nut 5. The clamping nut 5 and the clamping plate 4 squeeze the spool 1 from both sides to fix the spool 1 on the shaft 2.

[0026] The other end of the shaft 2 is connected to the drive rod 6 via a universal joint. The drive rod 6 is mounted on the turntable 7, which is fixedly mounted on the rotating shaft 8. The rotating shaft 8 is connected to the drive motor 9. The rotating shaft 8 is horizontally positioned, and the surface of the turntable 7 is perpendicular to the ground. When the drive motor 9 operates, it drives the turntable 7 to rotate via the rotating shaft 8. The turntable 7, in turn, drives the universal joint and one end of the shaft 2 to perform circular motion on a plane perpendicular to the ground. Correspondingly, the other end of the shaft 2, on which the bobbin 1 is mounted, also performs circular motion. At this time, as long as the frequency of the circular motion and the winding speed of the thread are controlled, the length of the thread wound in one revolution of the bobbin 1 is exactly the circumference of the coil on the bobbin 1. When unwinding the thread, the thread will not rub against the edge of the bobbin 1 and there is no large-angle turning. The unwinding tension is small, and the damage to the thread is minimal. The method of controlling the frequency of the circular motion and the winding speed of the thread is a conventional technique in the prior art and will not be described in detail here.

[0027] The drive motor 9 can be directly connected to the end of the rotating shaft 8 via a coupling, or as follows: Figure 1 As shown in the embodiment, the rotating shaft 8 is driven to rotate after being reduced in speed by the gearbox 81. At this time, the rotating shaft 8 is rotatably mounted on the gearbox 81 via bearings. The gearbox 81 contains a drive gear shaft 82 parallel to the rotating shaft 8. A first drive gear 83 is fixedly mounted on the drive gear shaft 82. A large gear 84 that is constantly meshed with the first drive gear 83 is fixedly mounted on the rotating shaft 8. The drive motor 9 is connected to the drive gear shaft 82 via a coupling.

[0028] As a further improvement of the present invention, the turntable 7 can be an integral disc structure or a composite disc structure.

[0029] like Figure 3The diagram shows a circular turntable 7 with multiple mounting holes 79. Each mounting hole 79 is equidistant from the rotating shaft 8, and the drive rod 6 is installed in different mounting holes 79 with varying radii of motion. The end of the drive rod 6 has an external thread. The drive rod 6 passes through the mounting holes on the turntable 7 and is secured by nuts located on both sides of the turntable 7. In use, according to the specifications of the spool 1 and the radius of the spool 1's required circular motion during thread feeding, the externally threaded end of the drive rod 6 is inserted into the corresponding mounting hole 79. Two nuts are installed on the external thread of the drive rod 6, and these two nuts are tightened from both sides of the turntable 7 to lock the position of the drive rod 6.

[0030] like Figure 1 As shown in the embodiment, the turntable 7 adopts a composite disc structure, including a front panel 71 and a rear panel 72 arranged in parallel, with a gap between the front panel 71 and the rear panel 72. An annular sealing edge 73 is fixedly provided around the edges of the front panel 71 and the rear panel 72. Both the front panel 71 and the rear panel 72 have radially extending strip-shaped through holes. The drive rod 6 is located in the strip-shaped through holes of the front panel 71 and the rear panel 72 and can slide radially along the strip-shaped through holes to change the distance between the drive rod 6 and the rotating shaft 8. An adjusting disc 74 is installed on the rotating shaft 8 between the front panel 71 and the rear panel 72 through bearings.

[0031] like Figure 4 As shown, the adjusting disk 74 is a cam structure with multiple support points 75 on its edge. Each support point 75 is an arc-shaped slot on the edge of the adjusting disk 74, the diameter of which matches the outer diameter of the drive rod 6, for supporting the drive rod 6. The multiple support points 75 are arranged in a ring around the axis of the rotating shaft 8, and the distance from each support point 75 to the axis of the rotating shaft 8 gradually increases or decreases. Adjacent support points 75 have smooth transition curves. The drive rod 6 is equipped with a spring 76 that pulls it towards the rotating shaft 8. This spring 76 can be a tension spring or a compression spring, such as... Figure 1As shown, when spring 76 is a tension spring, one end is attached to drive rod 6 and the other end is attached to rotating shaft 8. The tension of the tension spring pulls drive rod 6 toward rotating shaft 8 at the center of turntable 7. Conversely, when spring 76 is a compression spring, one end is attached to drive rod 6 and the other end abuts against the inner wall of sealing edge 73, and the central axis of compression spring is parallel to the strip-shaped through hole on front panel 71 or rear panel 72. The pressure of compression spring can also push drive rod 6 toward rotating shaft 8 at the center of turntable 7. When drive rod 6 is stuck in a support point 75 on the edge of adjustment disk 74, the two sides of drive rod 6 are restricted by the arc-shaped groove and are in a stable state. However, when adjustment disk 74 is subjected to a sufficiently large torque and rotates, drive rod 6 will overcome the force of spring 76, slide out from the current support point 75, and slide along the smooth transition edge curve of adjustment disk 74 to another support point. Since the distances from two adjacent support points to the rotating shaft 8 are not equal, the drive rod 6 will change its distance from the rotating shaft 8 when it changes the support point.

[0032] like Figure 1 , Figure 4 As shown, a driven gear 77 is fixedly mounted on one side of the adjusting disk 74. The driven gear 77 is coaxially arranged with the rotating shaft 8, and a second driving gear 78, which is constantly meshed with the driven gear 77, is rotatably mounted on the front panel 71 via bearings. In use, simply rotating the second driving gear 78 will drive the adjusting disk 74 to rotate via the driven gear 77. Figure 1 As shown, the second drive gear 78 has a drive gear shaft integrally disposed at its center. This drive gear shaft is rotatably inserted into the front panel 71 via bearings. The outer end of the drive gear shaft extends out of the front panel 71, and the outer end of the drive gear shaft is provided with an interface for convenient connection of tools. This can be as follows: Figure 1 The internal hexagonal wrench socket shown can be located at the end of the drive gear shaft, or it can be located at the end of the drive gear shaft. When in use, the second drive gear 78 can be driven by rotating the drive gear shaft with an internal hexagonal wrench or an adjustable wrench.

[0033] In addition, since the drive rod 6 drives the end of the shaft 2 to make a circular motion perpendicular to the horizontal plane, the two ends of the shaft 2 alternately go up and down, which generates a back-and-forth swinging thrust on the support rod 3 supporting the shaft 2. This is not conducive to the stability of the structure and will accelerate the wear of the support point.

[0034] To address the aforementioned issues, as a further improvement of the present invention, a U-shaped bend 21 is provided in the middle section of the shaft 2, and a collar 31 fixedly connected to the upper end of the support rod 3 is fitted onto the U-shaped bend 21; the universal joint includes a ball head 22 fixedly connected to the end of the shaft 2 and a ball socket 61 fixedly disposed at the end of the drive rod 6, with the ball head 22 slidably mounted within the ball socket 61. The cooperation between the U-shaped bend 21 and the collar 31 does not hinder the circumferential movement of both ends of the shaft 2, and can effectively reduce the thrust of the support rod 3 due to its back-and-forth swing, resulting in better stability of the support rod 3.

[0035] like Figure 1 , Figure 2 As shown, the lower end of the support rod 3 is provided with a lifting drive mechanism for driving the support rod 3 to rise and fall. The lifting drive mechanism includes a rack 32 disposed at the lower end of the support rod 3, a lifting gear 33 constantly meshing with the rack 32, a worm gear 34 coaxially disposed and fixedly connected to the lifting gear 33, a worm 35 constantly meshing with the worm gear 34, and a lifting driven wheel 36 fixedly connected to the end of the worm 35. The lifting driven wheel 36 is drively connected to the lifting motor 37. Figure 1 As shown, the lifting gear 33 has an integrally formed lifting gear shaft at both ends, and the worm gear 34 is also integrally fixed on the lifting gear shaft, which is supported on the frame 38 by bearings. Figure 2 As shown, the worm gear 35 intersects the lifting gear shaft at a right angle. Worm shafts are integrally formed at both ends of the worm gear 35. The lifting driven wheel 36 is fixedly mounted on the worm shaft, and both ends of the worm shaft are supported on the frame 38 by bearings. The lifting driven wheel 36 can be a pulley, connected to the lifting motor 37 via a belt; alternatively, it can be a sprocket, connected to the lifting motor 37 via a chain.

[0036] When the lifting motor 37 is working, it drives the worm shaft and worm 35 to rotate via the driven wheel 36. The rotation of the worm 35, in turn, drives the worm wheel 34 to rotate. Since the lifting gear 33 and the worm wheel 34 are coaxially arranged and fixedly connected, the lifting gear 33 rotates along with the worm wheel 34. The rotation of the lifting gear 33 inevitably drives the rack 32 and support rod 3 to rise or fall. Furthermore, because the worm gear mechanism has unidirectional driving capability, the worm can drive the worm wheel to rotate when it is under force, but the worm wheel cannot drive the worm to rotate when it is under force. Therefore, after the lifting motor 37 drives the support rod 3 to the set height via the worm wheel 34, the lifting motor 37 stops working, and the support rod 3 is locked at the set height, preventing its position from changing due to gravity or other external forces.

[0037] like Figure 5As shown, a lifting slide rail 39 is fixedly installed in the frame 38, and the support rod 3 is slidably installed in the lifting slide rail 39. The lifting slide rail 39 not only guides the support rod 3 to move up and down, but also supports and connects the two sides of the support rod 3, ensuring that the support rod 3 can only move up and down within the lifting slide rail 39 and will not fall off. Of course, the shape of the lifting slide rail 39 can be various, such as... Figure 5 The ring-shaped enclosure shown can also be a slide rail of other shapes, as long as it allows the support rod 3 to slide up and down without detaching.

[0038] In use, the spool 1 with wire 91 is fixedly installed on... Figure 1 At the right end of the central shaft 2, based on the size and specifications of the spool 1 and the direction of wire 91 release, start the lifting motor 37 to adjust the height of the support rod 3. Then, use an Allen wrench or adjustable wrench to rotate the adjusting disc 74 to engage the drive rod 6 into the appropriate support point 75. Start the drive motor 9 to make both ends of the shaft 2 rotate. Observe whether the wire 91 rubs against the edge of the spool 1 during release. If there is friction, the height of the spool 1 can be changed by adjusting the height of the support rod 3, or the distance between the drive rod 6 and the rotating shaft 8 can be changed by rotating the adjusting disc 74, thereby changing the range of motion of the spool 1 in the rotation. Both methods can change the angle between the spool 1 and the wire 91 during release, ultimately achieving the purpose of frictionless release of the wire 91. Although some specific embodiments of the present invention have been described in detail above by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A 3D follow-up wire drawing machine feeder, comprising a shaft (2) for mounting a wire spool (1) and a support rod (3) for supporting the shaft (2), characterized in that: The support rod (3) is hinged to the middle section of the shaft (2). One end of the shaft (2) is provided with a clamping plate (4) for clamping the spool (1) and a clamping nut (5) connected to the end of the shaft (2) by a thread. The other end of the shaft (2) is connected to the drive rod (6) by a universal joint. The drive rod (6) is mounted on the turntable (7). The turntable (7) is fixedly mounted on the rotating shaft (8). The rotating shaft (8) is connected to the drive motor (9) for transmission.

2. The 3D follow-up wire drawing machine feeder according to claim 1, characterized in that: The turntable (7) is disc-shaped and has multiple mounting holes. The end of the drive rod (6) has an external thread. The drive rod (6) is inserted through the mounting hole on the turntable (7) and fixed by nuts located on both sides of the turntable (7).

3. The wire feeding frame for a 3D follow-up wire drawing machine according to claim 1, characterized in that: The turntable (7) includes a front panel (71) and a rear panel (72) arranged in parallel. A gap is provided between the front panel (71) and the rear panel (72). An annular sealing edge (73) is fixedly provided around the edges of the front panel (71) and the rear panel (72). Both the front panel (71) and the rear panel (72) have radially extending strip-shaped through holes. The drive rod (6) is located in the strip-shaped through holes of the front panel (71) and the rear panel (72). An adjusting plate (74) is mounted on the rotating shaft (8) between the front panel (71) and the rear panel (72) via bearings. The edge of the adjusting plate (74) is provided with multiple support points (75) for supporting the drive rod (6). The support points (75) are arc-shaped slots set on the edge of the adjustment plate (74). Multiple support points (75) are arranged in a ring around the axis of the rotating shaft (8), and the distance from each support point (75) to the axis of the rotating shaft (8) gradually increases or decreases. There is a smooth transition edge curve between adjacent support points (75). The drive rod (6) is provided with a spring (76) to pull it toward the rotating shaft (8). A driven gear (77) is fixedly provided on one side of the adjustment plate (74). The driven gear (77) is coaxially arranged with the rotating shaft (8). The second drive gear (78) that is constantly meshed with the driven gear (77) is rotatably embedded in the front panel (71) through a bearing.

4. The 3D follow-up wire drawing machine feeder according to claim 1, 2, or 3, characterized in that: The middle section of the shaft (2) is provided with a U-shaped bend (21), and the upper end of the support rod (3) is fixedly connected to a collar (31) fitted on the U-shaped bend (21); the universal joint includes a ball head (22) fixedly connected to the end of the shaft (2) and a ball socket (61) fixedly provided at the end of the drive rod (6), and the ball head (22) is slidably installed in the ball socket (61).

5. The 3D follow-up wire drawing machine feeder according to claim 1, 2, or 3, characterized in that: The rotating shaft (8) is rotatably mounted on the gearbox (81) via bearings. The gearbox (81) contains a drive gear shaft (82) parallel to the rotating shaft (8). A first drive gear (83) is fixedly mounted on the drive gear shaft (82). A large gear (84) that is constantly meshed with the first drive gear (83) is fixedly mounted on the rotating shaft (8). The drive motor (9) is connected to the drive gear shaft (82) via a coupling.

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