Shaftless disc automatic pay-off stand

Abstract

This utility model relates to a shaftless automatic wire feeding frame in the field of wire feeding frames. It includes a support plate, a support base connected to the support plate, and a rotatable central shaft connected to the support base. A base plate is connected to the support plate via a support rod. Both the support plate and the base plate have mounting grooves. Multiple sets of variable diameter adjustment components are provided at the bottom of the support plate. A sliding bracket is connected to the central shaft via a sliding member. The sliding bracket is equipped with sliding rollers and a detachable counterweight. A guide wheel is connected to the end of the central shaft away from the base plate, and an adjusting rod is connected to the end of the central shaft near the base plate via a connecting block. An adjusting guide wheel is connected to the end of the adjusting rod. This utility model provides more stable wire feeding during the feeding process, effectively addresses tension fluctuations during wire feeding, improves the stability and reliability of wire feeding control, ensures precise control of subsequent processes and high-speed, continuous production, and improves production efficiency and product quality.

Description

Technical Field

[0001] This utility model relates to the field of wire feeding frames, specifically to a shaftless automatic wire feeding frame. Background Technology

[0002] In industrial production fields such as wire and cable manufacturing, textiles, and metal wire and filament production, pay-off frames are key equipment for wire conveying, and their performance directly affects the stability of wire conveying and processing quality. Automatic tension pay-off frames belong to the field of wire handling equipment technology. Their core function is to achieve continuous and stable wire conveying by supporting and releasing the wire spool, providing a fundamental guarantee for subsequent processes such as stranding, extrusion, braiding, or equipment feeding. With the increasing level of industrial automation, the technological development of pay-off frames has gradually evolved from manual operation to intelligent and high-precision systems. Especially in high-speed, long-distance wire conveying scenarios, higher requirements are placed on the stability, tension control, and anti-interference capabilities of pay-off frames.

[0003] Traditional wire unwinding frames typically consist of a frame, a braking device, and guide wheels. In use, the wire spool is usually a disc type with a shaft, fitted onto a support shaft. The braking device applies resistance to control the unwinding speed, while the guide wheels adjust the wire output direction. In practical applications, the wire is wound through the guide wheels and connected to subsequent equipment, allowing external force to be applied to the wire for automatic unwinding.

[0004] However, existing pay-off frames have certain drawbacks in practical applications: First, wire reels are generally divided into shaft-type and shaftless type. Shaftless wire reels lack shaft support, and existing pay-off frames have difficulty supporting and adjusting the limits of shaftless wire reels, resulting in poor support and limiting effects. Consequently, during the pay-off process, the wire reel is prone to loosening or even falling off due to pay-off inertia or tension fluctuations, affecting the continuity and stability of pay-off. Second, existing pay-off frames generally achieve tension control through friction between the rotating wheel and the belt. However, when the wire is conveyed due to large tension fluctuations and insufficient buffering, problems such as wire shaking and tangling often occur. This not only affects the stable conveying and pay-off of the wire but also leads to low pay-off control accuracy and poor reliability. Consequently, it affects the accuracy control of subsequent processes and the high-speed, continuous production cycle, reducing production efficiency and product quality. Utility Model Content

[0005] The purpose of this utility model is to solve the above-mentioned defects and provide a shaftless automatic wire feeding frame to solve the technical problems in the background art of how to improve the support stability of the wire feeding frame for shaftless wire reels and the applicability of wire reel inner diameter adjustment, as well as how to improve the wire feeding tension and buffer control of the wire feeding frame, so as to enhance the stability and reliability of wire feeding control.

[0006] The objective of this utility model is achieved through the following means:

[0007] An automatic wire feeding rack without a shaft includes a support plate, a support base connected to the support plate, a rotatable central shaft connected to the support base, a deflector wheel connected to the end of the central shaft near the base plate, an adjusting belt for adjusting frictional resistance on the support plate, a base plate connected to the support plate via a support rod, and mounting grooves on both the support plate and the base plate, allowing the support rod to move and adjust along the mounting grooves. The support rod can space the support plate and the base plate, creating an installation spacing for mounting the wire coil. Multiple sets of variable diameter adjustment components are provided at the bottom of the support plate, allowing for relative contraction and closure or relative separation and opening. A sliding bracket is connected to the central shaft via a sliding member, and the sliding bracket is equipped with a sliding roller and a detachable counterweight. A guide wheel is connected to the end of the central shaft away from the base plate, and an adjusting rod that can be radially telescopically adjusted is connected to the end of the central shaft near the base plate via a connecting block. An adjusting guide wheel is connected to the end of the adjusting rod.

[0008] Furthermore, as described above, the central shaft is mounted on the support base via bearings, and the end of the central shaft is vertically positioned through the support plate. The anti-rotation wheel is fixedly connected to the central shaft, enabling the central shaft to drive the anti-rotation wheel to rotate synchronously. The support plate is provided with an adjustment bracket for mounting an adjustment belt. The adjustment belt makes frictional contact with the anti-rotation wheel, and the end of the adjustment belt is connected to the adjustment bracket.

[0009] The resistance to the rotation of the central shaft is controlled by adjusting the friction between the belt and the anti-rotation wheel, thereby adjusting the wire tension. This allows for more precise control of the wire tension, reducing problems such as wire swaying and tangling caused by large tension fluctuations, improving the accuracy and reliability of wire feeding control, and enhancing wire feeding stability.

[0010] Furthermore, as described above, the support plate is provided with guide grooves that extend radially, and the guide grooves are paired with the variable diameter adjustment assembly.

[0011] The guide groove provides a moving track for the diameter adjustment component, allowing it to move in a predetermined direction during adjustment. This ensures the accuracy and stability of the adjustment, improves its applicability to adjusting the inner diameter of shaftless coils, and enables the pay-off frame to better adapt to shaftless coils with different inner diameters.

[0012] Furthermore, as described above, the variable diameter adjustment assembly includes a mounting base, a limiting rod, and an adjusting screw. The mounting base is connected to the bottom of the support plate, and there are two mounting bases distributed at both ends of the guide groove. One end of the limiting rod passes through the guide groove, and the other end of the limiting rod extends towards the bottom plate. The adjusting screw passes through the mounting base and is connected to the limiting rod, so that the rotation of the adjusting screw can drive the limiting rod to move and adjust along the guide groove.

[0013] The variable diameter adjustment component can shrink or expand according to the inner diameter of the wire coil, effectively solving the problem that existing wire feeding frames have difficulty supporting and adjusting the limit of shaftless disc wire coils. It enhances the support and limit effect of the wire coil, prevents the wire coil from loosening or even falling off during the wire feeding process due to wire feeding inertia or tension fluctuations, and improves the continuity and stability of wire feeding.

[0014] Furthermore, as described above, the variable diameter adjustment assembly is provided in three sets, and the three sets of variable diameter adjustment assemblies are distributed in a circumferential array at the bottom of the support plate, so that the variable diameter adjustment assembly can shrink or expand according to the inner diameter of the wire coil.

[0015] Three sets of variable diameter adjustment components are arranged in a circular array at the bottom of the support plate, which can shrink or expand according to the inner diameter of the coil. The three sets of variable diameter adjustment components can provide more uniform and stable support and limit the shaftless coil. Compared with a single or two sets of adjustment components, it greatly improves the support stability and inner diameter adjustment applicability of the shaftless coil, ensuring that the coil remains stable during the unwinding process.

[0016] Furthermore, as described above, the sliding member consists of a slider and a slide rail. The slide rail is mounted on the central shaft and extends axially along the central shaft. The slider is mounted on the slide rail in pairs, and the sliding bracket is connected to the slider in pairs, so that the sliding bracket can reciprocate along the slide rail via the slider.

[0017] The sliding support can move flexibly according to the unwinding process. During the unwinding process, the sliding rollers and counterweights on the sliding support can play a buffering role. When tension fluctuations occur in the wire conveying, the movement of the sliding support can absorb some of the tension changes, reduce wire swaying, and enhance the stability and reliability of the unwinding control.

[0018] One end of the sliding bracket is equipped with a support section and guide post for supporting and mounting the counterweight, while the other end is equipped with an installation section for mounting the sliding roller. This allows the counterweight to be stably placed on the support section. The guide post allows for easy addition or removal of the counterweight, while the sliding roller is stably mounted on the installation section. This enables the sliding roller to apply a stable downward pressure and tension force to the wire according to the weight of the counterweight, effectively solving the problem of loosening caused by insufficient tension during wire laying and enhancing the reliability of wire laying control and the downward pressure buffering effect.

[0019] Furthermore, as described above, the connecting block is connected to the central shaft via a connecting hole, and the connecting block is provided with a locking hole for the adjustment rod to pass through. One end of the adjustment rod passes through the locking hole, and the other end of the adjustment rod is bent to form a connecting part.

[0020] The adjusting guide wheel at the end of the adjusting rod allows for more precise control over the direction and position of wire laying, further improving the stability and reliability of the laying process.

[0021] By connecting the adjusting rod to the locking hole, the position of the adjusting rod can be flexibly adjusted according to actual needs, thereby driving the adjusting guide wheel to adjust its position to adapt to the unwinding adjustment requirements of different wires. This ensures that the wire is stably unwound and conveyed under the rotation of the adjusting rod driven by the central shaft, enhancing the adaptability and stability of the unwinding control.

[0022] Furthermore, in the above description, the end of the central shaft away from the support plate is connected to a wire feeding sleeve via a mounting bracket. The wire feeding sleeve has a through wire feeding hole. The adjusting guide wheel is connected to the connecting part via a connecting bracket. A wire threading sleeve is connected to the connecting bracket. The wire threading sleeve has a through wire threading hole.

[0023] The wire feeding sleeve and the wire threading sleeve can protect and guide the wire, preventing it from getting tangled or messy due to external interference during the feeding process. At the same time, in conjunction with the adjusting guide wheel, it can better control the wire feeding path, improve the stability and reliability of the feeding, ensure the precision control of subsequent processes and the high-speed, continuous production cycle, and improve production efficiency and product quality.

[0024] The beneficial effects of this utility model are as follows: The bottom of the support plate is provided with multiple sets of variable diameter adjustment components, and the multiple sets of variable diameter adjustment components can be relatively contracted and closed or relatively far apart and opened. By adjusting the variable diameter adjustment components, it can adapt to shaftless coils with different inner diameters, effectively limit the inner diameter of the coils, prevent the coils from loosening or even falling off during the unwinding process due to unwinding inertia or tension fluctuations, enhance the support and limiting effect of the coils, and ensure the continuity and stability of unwinding.

[0025] As the wire passes sequentially through the adjusting guide wheel, guide wheel, and sliding roller, external force causes the sliding roller to be pulled and lifted, and the adjusting guide wheel is forced to rotate due to tension. This causes the central shaft to rotate the adjusting rod and adjusting guide wheel in a circular motion to release the wire. During the wire's intermittent rotation via the central shaft and adjusting rod, the sliding component connects to the sliding roller through a sliding bracket. The sliding bracket is equipped with detachable counterweights, which apply downward tension to the wire through the weight of the counterweights. This maintains a certain tension on the wire during release, providing a buffering effect and making the wire more stable during transport. This effectively addresses tension fluctuations during wire transport, improves the stability and reliability of release control, ensures precise control of subsequent processes, and maintains a high-speed, continuous production cycle, thereby improving production efficiency and product quality. Attached Figure Description

[0026] Figure 1 This is a top-view schematic diagram of the overall structure of this embodiment;

[0027] Figure 2 This is a schematic diagram of the overall structure from a bottom-view perspective in this embodiment;

[0028] Figure 3 for Figure 2 A magnified view of part A in the diagram;

[0029] Figure 4 This is a schematic diagram of the structure of this embodiment;

[0030] Figure 5 This is a schematic diagram illustrating the usage state of this embodiment;

[0031] The reference numerals in the diagram are as follows: 1-Support plate, 2-Support base, 3-Central shaft, 4-Stop wheel, 5-Adjusting belt, 6-Support rod, 7-Base plate, 8-Mounting groove, 9-Sliding bracket, 10-Sliding roller, 11-Counterweight block, 12-Guide wheel, 13-Adjusting rod, 14-Adjusting guide wheel, 15-Adjusting bracket, 16-Guide groove, 17-Slider, 18-Slide rail, 19-Connecting hole, 20-Locking hole, 21-Wire feeding sleeve, 22-Wire feeding hole, 23-Wire threading sleeve, 24-Wire threading hole, 25-Connecting block;

[0032] 100- Variable diameter adjustment assembly, 101- Mounting base, 102- Limiting rod, 103- Adjusting screw. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0034] To make the technical problem to be solved, the technical solution and the beneficial effects of this utility model clearer, the following describes the solution in further detail with reference to the accompanying drawings and embodiments.

[0035] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this scheme and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0036] In this embodiment, refer to Figures 1-5The specific implementation of this shaftless automatic wire feeding frame includes a support plate 1, a support base 2 connected to the support plate 1, a rotatable central shaft 3 connected to the support base 2, a deflector wheel 4 connected to the end of the central shaft 3 near the base plate 7, an adjusting belt 5 for adjusting frictional resistance on the support plate 1, and a base plate 7 connected to the support plate 1 via a support rod 6. Both the support plate 1 and the base plate 7 have mounting grooves 8, allowing the support rod 6 to move and adjust along the mounting grooves 8. The support rod 6 can space the support plate 1 and the base plate 7, forming a space between them for fitting together. The installation spacing of the wire coil is set. The bottom of the support plate 1 is provided with multiple sets of variable diameter adjustment components 100. The multiple sets of variable diameter adjustment components 100 can be relatively contracted and closed or relatively far apart and opened. A sliding bracket 9 is connected to the central shaft 3 through a sliding member. The sliding bracket 9 is provided with a sliding roller 10 and a detachable counterweight 11. The end of the central shaft 3 away from the base plate 7 is connected to a guide wheel 12. The end of the central shaft 3 near the base plate 7 is connected to an adjustment rod 13 that can be adjusted radially through a connecting block 25. The end of the adjustment rod 13 is connected to an adjustment guide wheel 14.

[0037] The automatic tension pay-off frame in this embodiment features automatic tension adjustment and buffering functions, which solves problems such as wire swaying and tangling found in existing pay-off frames, improving the stability and reliability of pay-off control. Therefore, it can better adapt to high-speed, continuous production cycles, meeting the requirements of modern production for pay-off frames and contributing to improved production efficiency and product quality.

[0038] The central shaft 3 is mounted on the support base 2 via bearings, and the end of the central shaft 3 is vertically set through the support plate 1. The anti-rotation wheel 4 is fixedly connected to the central shaft 3, so that the central shaft 3 can drive the anti-rotation wheel 4 to rotate synchronously. The support plate 1 is provided with an adjustment bracket 15 for installing the adjustment belt 5. The adjustment belt 5 makes frictional contact with the anti-rotation wheel 4, and the end of the adjustment belt 5 is connected to the adjustment bracket.

[0039] The resistance to the rotation of the central shaft 3 is controlled by adjusting the friction between the belt 5 and the anti-rotation wheel 4, thereby adjusting the wire tension. This allows for more precise control of the wire tension, reducing problems such as wire swaying and tangling caused by large tension fluctuations, improving the accuracy and reliability of wire feeding control, and enhancing wire feeding stability.

[0040] The inner side of the adjusting belt 5 is in frictional contact with the outer side of the anti-rotation wheel 4, and its end is connected to the adjusting bracket 15. By adjusting the frictional resistance between the adjusting belt 5 and the anti-rotation wheel 4, the rotational resistance of the central shaft 3 can be adjusted, thereby adjusting the tension of the wire. This provides an effective tension adjustment mechanism for the wire feeding frame. At the same time, the rotation of the central shaft 3 drives the adjusting rod 13 to rotate in a circle, causing the adjusting guide wheel 14 to drive the wire to be radially wound. When there is no wire or the wire is broken, the tension on the adjusting guide wheel 14 disappears, and the friction between the anti-rotation wheel 4 and the adjusting belt 5 prevents rotation and automatically brakes and stops the machine, thus enhancing the accuracy and reliability of wire feeding control.

[0041] The support plate 1 is provided with guide grooves 16 that extend radially, and the guide grooves 16 are paired with the variable diameter adjustment assembly 100.

[0042] The guide groove 16 provides a moving track for the variable diameter adjustment assembly 100, enabling the variable diameter adjustment assembly 100 to move in a predetermined direction during the adjustment process, ensuring the accuracy and stability of the adjustment, and helping to improve the applicability of adjusting the inner diameter of the shaftless coil, so that the pay-off frame can better adapt to shaftless coils with different inner diameters.

[0043] The variable diameter adjustment assembly 100 includes two mounting seats 101, a limiting rod 102, and an adjusting screw 103. The mounting seats 101 are bolted to the bottom of the support plate 1. The two mounting seats 101 are distributed at both ends of the guide groove 16. One end of the limiting rod 102 passes through the guide groove 16, and the other end of the limiting rod 102 extends toward the bottom plate 7. The adjusting screw 103 passes through the mounting seat 101 and is connected to the limiting rod 102, so that the rotation of the adjusting screw 103 can drive the limiting rod 102 to move and adjust along the guide groove 16.

[0044] The variable diameter adjustment component 100 can shrink or expand according to the inner diameter of the wire coil, effectively solving the problem that existing wire feeding frames have difficulty supporting and adjusting the limit of shaftless disc wire coils. It enhances the support and limit effect of the wire coil, prevents the wire coil from loosening or even falling off due to wire feeding inertia or tension fluctuations during the wire feeding process, and improves the continuity and stability of wire feeding.

[0045] The variable diameter adjustment component 100 is provided in three sets, and the three sets of variable diameter adjustment components 100 are distributed in a circular array at the bottom of the support plate 1, so that the variable diameter adjustment component 100 can shrink or expand according to the inner diameter of the wire coil.

[0046] Three sets of variable diameter adjustment components 100 are arranged in a circular array at the bottom of the support plate 1, which can shrink or expand according to the inner diameter of the coil. The three sets of variable diameter adjustment components 100 can provide more uniform and stable support and limit the shaftless coil. Compared with a single or two sets of adjustment components, it greatly improves the support stability and inner diameter adjustment applicability of the shaftless coil, ensuring that the coil remains stable during the unwinding process.

[0047] The sliding member consists of a slider 17 and a slide rail 18. The slide rail 18 is mounted on the central shaft 3 and extends axially along the central shaft 3. The slider 17 is mounted on the slide rail 18. The sliding bracket 9 is connected to the slider 17, so that the sliding bracket 9 can reciprocate along the slide rail 18 via the slider 17.

[0048] The sliding bracket 9 can move flexibly according to the unwinding process. During the unwinding process, the sliding roller 10 and counterweight 11 on the sliding bracket 9 can play a buffering role. When tension fluctuations occur in the wire conveying, the movement of the sliding bracket 9 can absorb some of the tension changes, reduce wire swaying, and enhance the stability and reliability of the unwinding control.

[0049] One end of the sliding bracket 9 is provided with a support part and a guide post for supporting and passing the counterweight 11, and the other end is provided with a mounting part for mounting the sliding roller 10. This allows the counterweight 11 to be stably placed on the support part. The counterweight 11 can be easily added or removed through the guide post. At the same time, the sliding roller 10 can be stably mounted on the mounting part, so that the sliding roller 10 can apply a stable downward pressure tension to the wire according to the weight of the counterweight 11. This effectively solves the problem of loosening due to insufficient tension during wire laying, and enhances the reliability of wire laying control and the downward pressure buffering effect.

[0050] Specifically, the sliding roller 10 can drive the sliding bracket 9 to move up and down by the traction of the wire. At the same time, due to the influence of the gravity of the counterweight 11 and the sliding roller 10, when the unwinding traction of the wire stops or disappears, the sliding bracket 9 moves downward under the influence of gravity, thereby pressing and tensioning the wire.

[0051] The connecting block 25 is connected to the central shaft 3 through the connecting hole 19, and the connecting block 25 is provided with a locking hole 20 for the adjusting rod 13 to pass through. One end of the adjusting rod 13 passes through the locking hole 20, and the other end of the adjusting rod 13 is bent to form a connecting part.

[0052] By extending and retracting the adjusting rod 13, the position of the adjusting guide wheel 14 can be changed, thereby adjusting the direction and stress of the wire according to different wire coil diameters, and realizing the adjustment of wire unwinding. The adjusting guide wheel 14 at the end of the adjusting rod 13 can more accurately control the direction and position of wire unwinding, further improving the stability and reliability of unwinding.

[0053] By connecting the adjusting rod 13 to the locking hole 20, the position of the adjusting rod 13 can be flexibly adjusted according to actual needs, thereby driving the adjusting guide wheel 14 to adjust its position to adapt to the unwinding adjustment requirements of different wires, thereby ensuring that the wire is stably unwound and conveyed under the rotation of the adjusting rod 13 driven by the central shaft 3, and enhancing the adaptability and stability of the unwinding control.

[0054] The end of the central shaft 3 away from the support plate 1 is connected to a wire feeding sleeve 21 via a mounting bracket. The wire feeding sleeve 21 has a through wire feeding hole 22. The adjusting guide wheel 14 is connected to the connecting part via a connecting bracket. The connecting bracket is connected to a threading sleeve 23, which has a through threading hole 24.

[0055] The wire feeding sleeve 21 and the wire threading sleeve 23 can protect and guide the wire, preventing it from being tangled or messy due to external interference during the feeding process. At the same time, in conjunction with the adjusting guide wheel 14, they can better control the wire feeding path, improve the stability and reliability of the feeding, ensure the precision control of subsequent processes and high-speed, continuous production cycle, and improve production efficiency and product quality.

[0056] The specific operating principle in this embodiment is as follows:

[0057] Separate the support plate 1 and the base plate 7, place the wire coil on the base plate 7, and use bolts to connect the support plate 1 and the base plate 7 together via the support rod 6. The bottom of the support plate 1 is equipped with multiple sets of variable diameter adjustment components 100. By adjusting the rotation of the adjusting screw 103, it can drive the limiting rod 102 to open relatively far away, thereby contacting the inner diameter of the wire coil. By adjusting the variable diameter adjustment components 100, it can adapt to the shaftless coil with different inner diameters, effectively limit the inner diameter of the wire coil, prevent the wire coil from loosening or even falling off during the unwinding process due to unwinding inertia or tension fluctuations, enhance the support and limiting effect of the wire coil, and ensure the continuity and stability of unwinding.

[0058] When the open end of the wire coil is sequentially passed through the adjusting guide wheel 14, the guide wheel 12, and the sliding roller 10, the wire is pulled and lifted by the external force, while the adjusting guide wheel 14 is driven by the tension, causing the central shaft 3 to rotate the adjusting rod 13 and the adjusting guide wheel 14 in a circular motion to release the wire. When the wire is conveyed, the adjusting rod 13 and the adjusting guide wheel 14 rotate intermittently by the central shaft 3, and the slider 17 can drive the sliding bracket 9 to move along the slide rail 18. The sliding bracket 9 is connected to the sliding roller 10, and the sliding bracket 9 is equipped with detachable counterweights 11. The weight of the counterweights 11 can apply downward pressure and tension to the wire through the sliding roller 10, so that the wire can maintain a certain tension during the release process, which plays a certain buffering role, making the wire more stable during the conveying process, effectively dealing with the tension fluctuations that occur during the wire conveying process, improving the stability and reliability of the release control, ensuring the precision control of subsequent processes and high-speed, continuous production cycle, and improving production efficiency and product quality.

[0059] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A shaftless automatic wire feeding rack, comprising a support plate, a support base connected to the support plate, a rotatable central shaft connected to the support base, a deflector wheel connected to the end of the central shaft near the base plate, and an adjusting belt for adjusting frictional resistance provided on the support plate, characterized in that: The support plate is connected to a base plate via a support rod. Both the support plate and the base plate have mounting grooves, allowing the support rod to move and adjust along the mounting grooves. The support rod can space the support plate and the base plate, creating an installation spacing for mounting the wire coil. The bottom of the support plate is equipped with multiple sets of variable diameter adjustment components, which can be relatively contracted and closed or relatively separated and opened. A sliding bracket is connected to the central shaft via a sliding member. The sliding bracket is equipped with sliding rollers and a detachable counterweight. A guide wheel is connected to the end of the central shaft away from the base plate, and an adjustment rod that can be moved and adjusted radially is connected to the end of the central shaft near the base plate via a connecting block. An adjustment guide wheel is connected to the end of the adjustment rod.

2. The shaftless automatic wire feeding rack according to claim 1, characterized in that: The central shaft is mounted on the support base via bearings, and the end of the central shaft passes through the support plate vertically. The anti-rotation wheel is fixedly connected to the central shaft, so that the central shaft can drive the anti-rotation wheel to rotate synchronously. The support plate is provided with an adjustment bracket for installing an adjustment belt. The adjustment belt makes frictional contact with the anti-rotation wheel, and the end of the adjustment belt is connected to the adjustment bracket.

3. The shaftless automatic wire feeding rack according to claim 1, characterized in that: The support plate is provided with guide grooves that extend radially, and the guide grooves are paired with the variable diameter adjustment components.

4. The shaftless automatic wire feeding rack according to claim 3, characterized in that: The variable diameter adjustment assembly includes a mounting base, a limiting rod, and an adjusting screw. The mounting base is connected to the bottom of the support plate, and there are two mounting bases distributed at both ends of the guide groove. One end of the limiting rod passes through the guide groove, and the other end of the limiting rod extends towards the bottom plate. The adjusting screw passes through the mounting base and is connected to the limiting rod, so that the rotation of the adjusting screw can drive the limiting rod to move and adjust along the guide groove.

5. The shaftless automatic wire feeding rack according to claim 1, characterized in that: The variable diameter adjustment assembly is provided in three sets, and the three sets of variable diameter adjustment assemblies are distributed in a circumferential array at the bottom of the support plate, so that the variable diameter adjustment assembly can shrink or expand according to the inner diameter of the wire coil.

6. The shaftless automatic wire feeding rack according to claim 1, characterized in that: The sliding component consists of a slider and a slide rail. The slide rail is mounted on the central axis and extends axially along the central axis. The slider is mounted on the slide rail in pairs. The sliding bracket is connected to the slider in pairs, so that the sliding bracket can reciprocate along the slide rail through the slider.

7. The shaftless automatic wire feeding rack according to any one of claims 1-6, characterized in that: The connecting block is connected to the central shaft through a connecting hole, and the connecting block is provided with a locking hole for the adjustment rod to pass through. One end of the adjustment rod passes through the locking hole, and the other end of the adjustment rod is bent to form a connecting part.

8. The shaftless automatic wire feeding rack according to claim 7, characterized in that: The end of the central shaft away from the support plate is connected to a wire feeding sleeve via a mounting bracket. The wire feeding sleeve has a through wire feeding hole. The adjusting guide wheel is connected to the connecting part via a connecting bracket. A wire threading sleeve is connected to the connecting bracket. The wire threading sleeve has a through wire threading hole.

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