Threading machine with thread body tightening structure

Abstract

The utility model discloses a threading machine with a wire body tightening structure, which comprises a shell, a wire spool arranged in the shell and a driving mechanism for driving the wire spool to rotate relative to the shell, a wire leading channel which is communicated with the outside of the shell and leads a wire body out of the wire spool is arranged in the shell, an annular groove for winding is arranged on the side wall of the wire spool, and the wire body tightening structure is arranged in the annular groove. The wire leading channel is communicated with the annular groove, a plurality of elastic supporting pieces used for abutting against the bottom face of the innermost ring of the wire body are arranged in the annular groove, a plurality of pressing wheels used for abutting against the surface of the outermost ring of the wire body are arranged at the position of a groove opening of the annular groove, and when the wire body is wound around the annular groove from the wire leading channel inwards, the elastic supporting pieces have outward pre-tightening force on the wire body. And the elastic supporting pieces are matched with the pressing wheels to adjust the gaps among the wire body rings. Compared with the prior art, the utility model has the advantages that the elastic support piece and the pressing wheel always press the coil no matter in the take-up or pay-off process, so that the threading machine is not easy to clamp and fluctuate no matter in the take-up or pay-off process.

Description

Technical Field

[0001] This utility model relates to the field of threading machine technology, and in particular to a threading machine with a thread tightening structure. Background Technology

[0002] During the construction and decoration process, it is essential to install various wires, such as electrical wires and network cables. If these wires are installed on the outside of the wall, it will not only affect the aesthetics, but the wires are also easily damaged and pose a safety risk. To solve this problem, technicians thread the wires into conduits and bury the conduits in the wall. Because electrical wires are relatively soft, technicians usually use iron wire or steel wire to tie the wires, and then pull the wires into the conduit after the other end is passed out of the conduit. This manual wire threading method is inefficient and difficult.

[0003] In response, automatic wire threading machines have emerged on the market, such as the Chinese utility model patent CN212935374U, "An Automatic Wire Threader for Wall Conduits of Power Wires," which includes a winding reel, a winding reel base, and a drive mechanism for driving the winding reel and the winding reel base to rotate circumferentially. The winding reel is mounted on the winding reel base. The winding reel has multiple rolling elements arranged circumferentially to guide it, and a traction device is provided at the coil output end on the winding reel. The outer ring of the winding reel has a gear structure, and a reversing wheel is meshed on the winding reel near the traction device. The reversing wheel meshes with an acceleration wheel, and the acceleration wheel is positioned to abut against the traction device.

[0004] In the above scheme, because the thread itself has strong rigidity and elasticity, the thread and the winding reel will loosen when the threading machine is winding or after winding, resulting in gaps between the wound threads. When unwinding, the thread is prone to getting stuck or fluctuating. Utility Model Content

[0005] This invention addresses the problem that loosening occurs between the thread and the winding reel in a threading machine, resulting in gaps between the wound threads. This causes the thread to easily get stuck or fluctuate during unwinding. This invention provides a threading machine with a thread tightening structure to solve the above problems.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: it includes a housing, a winding reel disposed in the housing, and a driving mechanism for driving the winding reel to rotate relative to the housing. The housing is provided with a lead-in channel communicating with the outside of the housing to lead the wire out from the winding reel. The side wall of the winding reel is provided with an annular groove for winding the wire. The lead-in channel communicates with the annular groove. The annular groove is provided with a plurality of elastic support members for abutting against the bottom surface of the innermost coil of the wire. The opening of the annular groove is provided with a plurality of pressure rollers for abutting against the surface of the outermost coil of the wire. When the wire is wound inward from the lead-in channel and wound around the annular groove, the elastic support members have an outward preload force on the wire. The gap between each coil of wire is adjusted by the cooperation of the elastic support members and the pressure rollers.

[0007] A further preferred embodiment of this utility model is as follows: the elastic support includes a support block, a tension spring, and a torsion spring; the bottom of the annular groove has an installation groove; the bottom of the installation groove has a fixing ring; one end of the support block has a connecting ring; the tension spring is disposed in the installation groove and one end is hooked onto the fixing ring, and the other end is hooked onto the connecting ring; a connecting shaft is provided on the wall of the annular groove; the support block has an installation hole fitted onto the connecting shaft; the torsion spring is fitted onto the connecting shaft, and one free end of the torsion spring is fixed to the wall of the annular groove, and the other free end is fixed to the support block.

[0008] A further preferred embodiment of this utility model is: the bottom of the annular groove has a receiving groove that communicates with the opening of the mounting groove. As the number of turns of the wire around the annular groove increases, the support block is pressed and gradually moves closer to the receiving groove and is received in the receiving groove.

[0009] A further preferred embodiment of this utility model is: the elastic support member includes a support block and a spring, the spring is disposed between the support block and the bottom of the annular groove, one end of the spring is fixed to the annular groove, and the other end is fixed to the support block.

[0010] A further preferred embodiment of this utility model is as follows: the elastic support includes a support block and a torsion spring, a connecting shaft is provided on the wall of the annular groove, the support block has a mounting hole fitted onto the connecting shaft, the torsion spring is fitted onto the connecting shaft, and one free end of the torsion spring is fixed on the wall of the annular groove, and the other free end is fixed on the support block.

[0011] A further preferred embodiment of this utility model is that the upper surface of the support block is an arc-shaped curved surface.

[0012] A further preferred embodiment of this utility model is: a plurality of the elastic support members are evenly distributed circumferentially along the bottom of the annular groove, and a plurality of the pressing wheels are evenly distributed circumferentially along the opening of the annular groove.

[0013] A further preferred embodiment of this utility model is: the winding spool includes a spool base and a spool cover, the spool base has a protruding annular platform in the middle of the side near the spool cover, and the spool cover is fixed on the spool base and surrounds the spool base to form the annular groove.

[0014] A further preferred embodiment of this utility model is as follows: the housing is provided with a first gear and a second gear meshing with the first gear. The side wall of the first gear is close to the side wall of the winding disc and can be driven to rotate by the winding disc. The second gear is coaxially connected to a transmission wheel that rotates with the second gear. The transmission wheel contacts the lower surface of the wire in the lead wire channel and can drive the lead wire to slide out or retract. The housing is provided with a pulley that is opposite to the transmission wheel and contacts the upper surface of the wire in the lead wire channel. There is a gap between the pulley and the transmission wheel for the wire to pass through.

[0015] A further preferred embodiment of this utility model is as follows: the pulley is provided with an adjusting component for adjusting the distance between the pulley and the transmission wheel. The adjusting component includes a connecting seat fixed inside the housing, two vertical sliding rods fixed on the connecting seat, a slider slidably disposed on the two vertical sliding rods, a rotating handle located outside the housing, and a connecting shaft with one end fixed to the handle and the other end extending into the housing. The end of the connecting shaft away from the handle has an eccentric block, and the back side of the slider is provided with a fixing block that rests on the eccentric block. The pulley is disposed on the slider.

[0016] Compared with the prior art, this utility model has the following advantages: By setting an elastic support member against the bottom surface of the innermost coil of the thread body in the annular groove of the winding reel, and setting several pressing wheels against the surface of the outermost coil of the thread body at the opening of the annular groove, when the threading machine is winding or unwinding the thread, the elastic support member has an outward pre-tightening force on the thread body, and the pressing wheels have a downward pressure on the surface of the outermost coil of the thread body. The gap between each coil of the thread body is adjusted by the cooperation of the elastic support member and the pressing wheels. When winding, as the number of coils gradually increases, the elastic support member is gradually compressed. When unwinding, as the number of coils gradually decreases, the support member is gradually lifted. Regardless of the number of coils, the elastic support member and the pressing wheels always press the coils, so that the threading machine is not easy to jam the thread when winding or unwinding, and the thread body will not fluctuate due to the elasticity and rigidity of the thread body itself. Attached Figure Description

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be regarded as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0018] Figure 1 This is a three-dimensional structural diagram of a preferred embodiment of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the multi-coil configuration after disassembling the housing in a preferred embodiment of the present invention.

[0020] Figure 3 This is a three-dimensional structural diagram of the preferred embodiment of the present invention when the housing is disassembled and the number of coils is small.

[0021] Figure 4 This is an exploded view of the winding reel after removing the reel cover, according to a preferred embodiment of this utility model.

[0022] Figure 5 This is a three-dimensional structural diagram of a preferred embodiment of the present invention after one side of the housing has been disassembled;

[0023] Figure 6 This is an exploded view of a preferred embodiment of the present invention;

[0024] Figure 7 This is an exploded view of the adjusting component and pulley in a preferred embodiment of the present invention.

[0025] In the diagram: 1. Housing; 2. Winding reel; 21. Reel base; 211. Annular platform; 22. Reel cover; 3. Lead wire channel; 4. Annular groove; 41. Mounting shaft; 42. Mounting groove; 421. Fixing ring; 43. Storage groove; 5. Elastic support; 51. Support block; 511. Connecting ring; 512. Mounting hole; 52. Tension spring; 53. Torsion spring; 6. Pressure wheel; 7. Adjusting component; 71. Connecting seat; 72. Vertical slide bar; 73. Slider; 731. Fixing block; 74. Rotating handle; 75. Connecting shaft; 751. Eccentric block; 76. Shock-absorbing spring; 77. Limiting ring; 8. First gear; 9. Second gear; 10. Transmission wheel; 11. Pulley; 12. Drive mechanism; 13. Wire body. Detailed Implementation

[0026] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0027] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

[0028] This embodiment mainly describes a threading machine with a thread tightening structure, as detailed below:

[0029] like Figures 1 to 7As shown, a threading machine with a thread tightening structure includes a housing 1, a winding reel 2, and a drive mechanism 12. The housing 1 has a mounting cavity for mounting the winding reel 2 and the drive mechanism 12. The drive mechanism 12 provides rotational power to the winding reel 2. The winding reel 2 is located within the mounting cavity of the housing 1. The drive mechanism 12 is fixed to the housing 1, and its output end is fixedly connected to the winding reel 2, enabling it to drive the winding reel 2 to rotate relative to the housing 1. The housing 1 has a lead-wire channel 3 communicating with the outside of the housing 1. 3 is used to lead the wire 13 out of the housing 1 from the winding reel 2. The winding reel 2 has an annular groove 4 for winding. The lead-in channel 3 communicates with the annular groove 4. The bottom of the annular groove 4 has an inwardly extending terminal. One end of the wire 13 is fixed to the terminal inside the annular groove 4, and the other end passes through the lead-in channel 3 and out of the housing 1. The annular groove 4 has several elastic support members 5, which are used to abut against the bottom surface of the innermost ring of the wire 13. The annular groove 4 has several clamping wheels 6 at the groove opening. Mounted on the axle, the axle is fixed to the inner wall of the housing 1, allowing the pressure wheel 6 to rotate relative to the housing 1. The pressure wheel 6 is used to abut against the outermost surface of the yarn body 13, guiding the yarn body 13. In conjunction with the elastic support 5, it can press the yarn body 13. When the yarn body 13 is wound inward from the lead-in channel 3 and onto the annular groove 4, the yarn body 13 exerts downward pressure on the elastic support 5, while the elastic support 5 exerts outward preload on the yarn body 13. The pressure wheel 6 exerts downward pressure on the surface of the outermost yarn body 13. The elastic support 5 and the pressure roller 6 work together to adjust the gap between each coil of the thread 13. When winding up, as the number of coils increases, the elastic support 5 is gradually compressed. When unwinding, as the number of coils decreases, the support is gradually lifted. Regardless of the number of coils, the elastic support 5 and the pressure roller 6 always press the coils together, so that the threading machine is not prone to getting stuck when winding up or unwinding, and the thread 13 will not fluctuate due to its own elasticity and rigidity.

[0030] Specifically, the elastic support 5 has three structures, the first structure as follows: Figures 4 to 6As shown, the elastic support 5 includes a support block 51, a tension spring 52, and a torsion spring 53. The bottom of the annular groove 4 has a mounting groove 42, and the bottom of the mounting groove 42 has a fixing ring 421. One end of the support block 51 has a connecting ring 511. The tension spring 52 is located within the mounting groove 42, with one end hooked onto the fixing ring 421 and the other end hooked onto the connecting ring 511. A mounting shaft 41 is provided on the wall of the annular groove 4. The support block 51 has a mounting hole 512 that fits onto the mounting shaft 41. The mounting hole 512 is preferably located near the connecting ring 511. Spring 53 is fitted onto mounting shaft 41, and one free end of torsion spring 53 is fixed to the wall of annular groove 4, while the other free end is fixed to support block 51. The fit between mounting hole 512 and mounting shaft 41 makes support block 51 form a lever with mounting shaft 41 as the fulcrum. Tension spring 52 exerts a downward pulling force on one end of support block 51, causing the end of support block 51 away from tension spring 52 to tilt upward. When the tilted end of support block 51 is subjected to pressure from the coil, it exerts an outward preload force on the coil under the action of tension spring 52 and torsion spring 53. To reduce the size of the threading machine and avoid the support block 51 occupying too much space in the annular groove 4, resulting in fewer coils being accommodated, the bottom of the annular groove 4 has an inwardly recessed receiving groove 43. The shape of the receiving groove 43 matches the shape of the support block 51. The receiving groove 43 is connected to the opening of the mounting groove 42. The number of receiving grooves 43 and mounting grooves 42 are equal and correspond one-to-one with the support block 51. As the number of turns of the wire 13 around the annular groove 4 increases, the support block 51 is gradually pressed closer to the receiving groove 43 and is received in the receiving groove 43.

[0031] Specifically, the second structure of the elastic support 5 is as follows: the elastic support 5 includes a support block 51 and a spring. The spring is located between the support block 51 and the bottom of the annular groove 4. One end of the spring is fixed to the annular groove 4, and the other end is fixed to the support block 51. When the wire is wound up, the coil presses the support block 51 downward. Under the action of the spring preload, the support block 51 pushes the coil outward and downward. At the same time, the pressure wheel 6 presses the outermost coil. The coil is subjected to the forces from the top and bottom at the same time, which makes the gap between each coil smaller.

[0032] Specifically, the third structure of the elastic support 5 is as follows: the elastic support 5 includes a support block 51 and a torsion spring 53. The annular groove 4 has a mounting shaft 41 on its wall. The support block 51 has a mounting hole 512 that fits onto the mounting shaft 41. The torsion spring 53 is fitted onto the mounting shaft 41, and one free end of the torsion spring 53 is fixed to the wall of the annular groove 4, while the other free end is fixed to the support block 51. When the coil is wound up, the coil presses down on the support block 51. At this time, the torsion spring 53 is deformed by the pressure of the support block 51 and has an outward preload force on the support block 51, which lifts the coil up. At the same time, the pressure wheel 6 presses the outermost coil. The coil is simultaneously subjected to forces from the top and bottom, which makes the gap between each coil smaller.

[0033] Specifically, in order to avoid friction between the line body 13 and the support block 51 during line feeding or reeling, which would shorten the life of the line body 13, the upper surface of the support block 51 in the above three elastic support member 5 structures is an arc-shaped curved surface.

[0034] Specifically, in order to ensure that the coils inside the annular groove 4 are all in a compressed state, several elastic support members 5 are evenly distributed along the bottom circumference of the annular groove 4, and several pressing wheels 6 are evenly distributed along the opening circumference of the annular groove 4. Considering the compression effect on the coils and the processing cost and material cost of the threading machine, three elastic support members 5 are preferred.

[0035] like Figure 5 and Figure 6 As shown, the winding reel 2 includes a reel base 21 and a reel cover 22. The reel base 21 has a protruding annular platform 211 at its center near the reel cover 22. The reel cover 22 is fixed to the reel base 21 with screws and together with the reel base 21 forms the aforementioned annular groove 4. By fixing the reel base 21 and the reel cover 22 with screws, the winding reel 2 can be quickly assembled and disassembled, facilitating the installation of the elastic support 5 within the relatively small annular groove 4.

[0036] like Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the housing 1 contains a first gear 8 and a second gear 9 meshing with the first gear 8. The side wall of the first gear 8 is in contact with the side wall of the winding disc 2 and can be rotated by the winding disc 2. Figure 3 As shown, the inner side of the first gear 8 is attached to the coil cover 22, and the second gear 9 is coaxially connected to the transmission wheel 10. The transmission wheel 10 is connected to the second gear 9 through a bushing so that the transmission wheel 10 always rotates with the second gear 9. The transmission wheel 10 contacts the lower surface of the wire 13 in the lead wire channel 3 and can drive the lead wire to slide out or retract. The housing 1 is provided with a pulley 11 that is opposite to the transmission wheel 10 and contacts the upper surface of the wire 13 in the lead wire channel 3. There is a gap between the pulley 11 and the transmission wheel 10 for the wire 13 to pass through. When the output end of the drive mechanism 12 drives the winding disc 2 to rotate, the first gear 8 rotates under the action of the disc cover 22. The rotation direction of the first gear 8 is opposite to the rotation direction of the winding disc 2. Under the action of the first gear 8, the rotation direction of the second gear 9 is the same as the direction of the turntable, so that the rotation direction of the transmission wheel 10 is the same as the rotation direction of the winding disc 2. While the transmission wheel 10 and the pulley 11 guide and tighten the yarn 13, they can assist the winding disc 2 in winding the yarn 13 into the annular groove 4.

[0037] Specifically, during the unwinding or rewinding process, the cable 13 inevitably rubs against the support block 51, the pressure roller 6, the conveyor roller 10, and the pulley 11. Prolonged use can cause the cable 13 to become thinner and damaged, resulting in gaps between the cable 13 and the conveyor roller 10 and pulley 11. This prevents the conveyor roller 10 and pulley 11 from guiding and tightening the cable 13. Therefore, the pulley 11 is equipped with an adjusting element 7 for adjusting the distance between the pulley 11 and the conveyor roller 10. Figure 7 As shown, the adjusting component 7 includes a connecting seat 71 fixed inside the housing 1, two vertical slide rods 72 fixed on the connecting seat 71, a slider 73 slidably mounted on the two vertical slide rods 72, a rotating handle 74 located outside the housing 1, and a connecting shaft 75 with one end fixed to the handle and the other end extending into the housing 1. The end of the connecting shaft 75 away from the handle has an eccentric block 751. A fixing block 731 resting on the eccentric block 751 is provided on the back side of the slider 73. A pulley 11 is mounted on the slider 73. To prevent the connecting shaft 75 from sliding off the fixing block 731, a limiting ring 77 is fitted on the connecting shaft 75. One end of the limiting ring 77 abuts against the inner side of the housing 1 near the rotating handle 74, and the other end abuts against the inner side of the eccentric block 751. To prevent the housing 1 from vibrating due to the excessive speed of the wire 13 during the winding or winding process, shock-absorbing springs 76 are provided on the two vertical slide rods 72. One end of the shock-absorbing spring 76 abuts against the slider 73, and the other end abuts against the lower surface of the top of the connecting seat 71.

[0038] Specifically, the drive mechanism 12 is a conventional technology in the field of threading machines, and will not be discussed in detail again. For reference, please refer to the drive mechanism in Chinese Utility Model Patent No. CN212935374U.

[0039] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model 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 utility model.

[0040] The threading machine with a thread tightening structure provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand this utility model and its core ideas. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A threading machine with a thread tightening structure, comprising a housing, a winding reel disposed within the housing, and a drive mechanism for rotating the winding reel relative to the housing, wherein the housing is provided with a lead-in channel communicating with the outside of the housing to lead the thread out from the winding reel, characterized in that: The spool side wall is provided with an annular groove for winding, the lead channel is communicated with the annular groove, the annular groove is provided with a plurality of elastic supporting members for abutting on the innermost circle bottom surface of the wire body, the annular groove is provided with a plurality of pressing wheels for abutting on the outermost circle surface of the wire body, when the wire body is wound in the annular groove from the lead channel, the elastic supporting members have outward pre-tightening force on the wire body, and the gap between the wire body circles is adjusted by the elastic supporting members and the pressing wheels.

2. The threader with a thread body tightening structure according to claim 1, characterized by: The elastic supporting member comprises a supporting block, a tension spring and a torsion spring, the groove bottom of the annular groove is provided with a mounting groove, the mounting groove bottom is provided with a fixing ring, one end of the supporting block is provided with a connecting ring, the tension spring is arranged in the mounting groove and one end of the tension spring is hooked on the fixing ring and the other end is hooked on the connecting ring, the annular groove wall is provided with a connecting shaft, the supporting block is provided with a mounting hole sleeved on the connecting shaft, the torsion spring is sleeved on the connecting shaft, and one free end of the torsion spring is fixed on the annular groove wall and the other free end is fixed on the supporting block.

3. The threader with a thread body tightening structure according to claim 2, characterized by: The annular groove bottom is provided with a receiving groove communicated with the mounting groove opening, when the number of the wire body wound in the annular groove is more and more, the supporting block is gradually pressed to approach the receiving groove and is received in the receiving groove.

4. The threader of claim 1, wherein: The elastic supporting member comprises a supporting block and a spring, the spring is arranged between the supporting block and the annular groove bottom, one end of the spring is fixed on the annular groove and the other end is fixed on the supporting block.

5. The threader with thread body tightening structure according to claim 1, characterized in that: The elastic supporting member comprises a supporting block and a torsion spring, the annular groove wall is provided with a connecting shaft, the supporting block is provided with a mounting hole sleeved on the connecting shaft, the torsion spring is sleeved on the connecting shaft, and one free end of the torsion spring is fixed on the annular groove wall and the other free end is fixed on the supporting block.

6. The threader with thread body tightening structure according to any one of claims 2 to 5, characterized in that: The upper surface of the supporting block is a circular arc curved surface.

7. The threader of claim 1, wherein: A plurality of elastic supporting members are evenly distributed along the annular groove bottom periphery, and a plurality of pressing wheels are evenly distributed along the annular groove opening periphery.

8. The threader of claim 1, wherein: The spool comprises a spool seat and a spool cover, the middle part of the side close to the spool cover of the spool seat is provided with a convex annular table, the spool cover is fixed on the spool seat and forms the annular groove together with the spool seat.

9. The threader of claim 1, wherein: The shell is provided with a first gear and a second gear engaged with the first gear, the side wall of the first gear abuts against the spool side wall and can be driven to rotate by the spool, the second gear is coaxially connected with a conveying wheel rotating with the second gear, the conveying wheel is in contact with the lower surface of the wire body in the lead channel and can drive the lead to slide out or be retracted, the shell is provided with a pulley arranged opposite to the conveying wheel and in contact with the upper surface of the wire body in the lead channel, and the pulley and the conveying wheel have a gap for the wire body to pass through.

10. The threader with thread body tightening structure according to claim 9, characterized in that: The pulley is provided with an adjusting member for adjusting the distance between the pulley and the conveying wheel, the adjusting member comprises a connecting seat fixed in the shell, two vertical sliding rods fixed on the connecting seat, a sliding block slidingly arranged on the two vertical sliding rods, a rotating handle outside the shell and a connecting shaft with one end fixed on the handle and the other end extending into the shell, the end of the connecting shaft away from the handle is provided with an eccentric block, the back side of the sliding block is provided with a fixed block abutting on the eccentric block, and the pulley is arranged on the sliding block.

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