Ribbon pulling machine based on automatic tension adjustment

Abstract

The utility model relates to the technical field of braid pulling machines, and discloses a braid pulling machine based on automatic tension adjustment, which comprises a support frame, a braid pulling machine main body arranged at the top end of the support frame, an access door rotationally arranged outside the braid pulling machine main body, and a braid feeding device arranged at the top end of the braid pulling machine main body, the braid pulling machine main body is internally provided with a braid discharging device and a tension adjusting mechanism for adjusting the tension of the braid. And through the design of the position adjusting assembly, the distance between the two movable frames is adjusted, and the processing requirements of braids with different thicknesses can be met. In combination with independent driving of the telescopic rod to the connecting frame, differential pressure can be applied to different sections of the braid, and the tension of the braid is controlled through anti-skid lines on the periphery of the adjusting wheel. Through the synergistic effect of spacing adjustment and segmented pressure control, the equipment can meet the requirements of braid thickness change and local tension at the same time, and the compatibility with complex processing scenes is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of webbing drawstring machines, in particular to a webbing drawstring machine based on self-adjustment of tension. Background Art

[0002] In the field of webbing processing, tension control is a core factor affecting product quality. The webbing must maintain dynamic tension balance during transmission. Too loose will cause wrinkles and deviation, while too tight may cause breakage or deformation. This is especially true when processing multi-layer composite or special-shaped webbing. Traditional webbing stretching machines, due to their rigid tension adjustment mechanisms, cannot meet the high-precision processing requirements.

[0003] Existing webbing tensioning machines generally use two sets of adjusting wheels at a fixed spacing to compress the webbing and adjust the tension of the webbing entering the machine. In practice, due to the fixed position of the adjusting wheels, existing webbing tensioning machines are difficult to process webbings of varying thicknesses. Furthermore, the single-area pressure application method can easily cause localized overstretching or relaxation of the webbing. This is particularly true when processing elastic fabrics or splicing webbing, where uneven tension distribution across different sections can significantly increase the defective rate. Utility Model Content

[0004] The purpose of this utility model is to provide a webbing tensioning machine with self-adjustable tension, which can adjust the distance between two movable frames to meet the processing requirements of webbings of different thicknesses. It can also apply differentiated pressure to different sections of the webbing to achieve control of the webbing tension.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a webbing drawstring machine based on autonomous tension adjustment, comprising a support frame, a webbing drawstring machine body is provided at the top of the support frame, an inspection door is rotatably connected to the outside of the webbing drawstring machine body, a webbing feeding device is provided at the top of the webbing drawstring machine body, a webbing discharge device is provided inside the webbing drawstring machine body, and a tension adjustment mechanism for adjusting the tension of the webbing is provided inside the webbing drawstring machine body.

[0006] The tension adjustment mechanism includes two movable frames movably arranged in the main body of the webbing drawing machine and distributed up and down. Each movable frame is provided with a connecting frame. The connecting frame is provided with an adjusting wheel for pressing the webbing to adjust the tension. The outer peripheral surface of the adjusting wheel is provided with anti-slip grooves.

[0007] Preferably, a position adjustment component for adjusting the position of the two connecting frames is provided in the main body of the ribbon drawing machine, and the position adjustment component includes a mounting frame fixed to the inner wall of the main body of the ribbon drawing machine, and a driving motor is fixed to the top of the mounting frame. The output shaft of the driving motor is connected to a bidirectional screw through a coupling. The bidirectional screw is arranged upright, and the two reverse threaded sections of the bidirectional screw are each threadedly connected to a slider, and the side of the slider is fixedly connected to the movable frame, and the movable frame is arranged horizontally.

[0008] Preferably, the position adjustment assembly includes a telescopic rod fixed in the movable frame, and the telescopic end of the telescopic rod is fixedly connected to the connecting frame.

[0009] Preferably, a guide groove is provided on the inner wall of the movable frame, and a limiting flange cooperating with the guide groove is provided on a side of the connecting frame close to the movable frame.

[0010] Preferably, the connecting frame is provided with an angle adjustment assembly for adjusting the angle of the adjusting wheel, the angle adjustment assembly comprising a first connecting rod that rotates within the connecting frame, a connecting frame being fixed to the outside of the first connecting rod, and the adjusting wheel rotating within the connecting frame. An adjustment handle is fixed to the end of the first connecting rod facing the access door, and a connecting gear is fixed to the outside of the first connecting rod.

[0011] Preferably, the angle adjustment assembly includes a second connecting rod rotating in the connecting frame, a lifting ring is fixed to the end of the second connecting rod near the access door, and an incomplete gear is fixed to the outside of the second connecting rod. The incomplete gear meshes with the connecting gear.

[0012] Preferably, a first spring is provided on the outer sleeve of the second connecting rod, one end of the first spring is fixedly connected to the connecting frame, and the other end is fixedly connected to the incomplete gear.

[0013] Compared with the existing technology, the utility model provides a webbing drawing machine based on self-adjustment of tension, which has the following beneficial effects:

[0014] 1. This tension-autonomous webbing tensioning machine uses a position adjustment component to adjust the distance between the two movable frames, adapting to the processing requirements of webbings of varying thicknesses. Combined with the independent drive of the connecting frame by the telescopic rod, differential pressure can be applied to different sections of the webbing, and webbing tension can be controlled by adjusting the anti-slip pattern on the outer periphery of the wheel. This synergistic effect of spacing adjustment and segmented pressure control enables the device to simultaneously adapt to changes in webbing thickness and local tension requirements, improving compatibility with complex processing scenarios.

[0015] 2. This tension-autonomous webbing tensioning machine allows manual adjustment of the working angle of the adjusting wheel by releasing the meshing of the incomplete gear and the connecting gear using a lifting ring. Once adjusted, the elastic force of the first spring automatically resets the incomplete gear to engage, creating a mechanical self-locking mechanism that effectively prevents angular deviation during processing. This design maintains the flexibility of manual fine-tuning while ensuring the long-term stability of tension parameters through physical locking. Combined with the position adjustment component, it maintains high tension accuracy and reliability during dynamic processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a webbing drawing machine based on automatic tension adjustment of the utility model.

[0017] Figure 2 This is a front view structural diagram of a webbing drawing machine based on automatic tension adjustment of the utility model.

[0018] Figure 3 This is a partial three-dimensional structural diagram of a webbing drawing machine based on automatic tension adjustment according to the present invention;

[0019] Figure 4 This is a schematic diagram of the partially disassembled structure of a webbing drawing machine based on automatic tension adjustment in this utility model. Figure 1 ;

[0020] Figure 5 This is a schematic diagram of the partially disassembled structure of a webbing drawing machine based on automatic tension adjustment in this utility model. Figure 2 ;

[0021] Figure 6 This is a schematic diagram of the partially disassembled structure of a webbing drawing machine based on automatic tension adjustment in this utility model. Figure 3 .

[0022] In the figure: 1. Support frame; 2. Webbing drawing machine body; 3. Inspection door; 4. Webbing inlet device; 5. Webbing outlet device; 6. Tension adjustment mechanism; 61. Movable frame; 62. Connecting frame; 63. Adjusting wheel; 64. Position adjustment assembly; 641. Mounting frame; 642. Driving motor; 643. Bidirectional screw; 644. Slider; 645. Telescopic rod; 65. Angle adjustment assembly; 651. First connecting rod; 652. Connecting frame; 653. Adjusting handle; 654. Connecting gear; 655. Second connecting rod; 656. Lifting ring; 657. Incomplete gear; 658. First spring; 659. Guide groove; 6510. Limiting flange. DETAILED DESCRIPTION

[0023] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is described in further detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] Example: See Figures 1-6 The utility model provides a technical solution: a webbing drawing machine based on self-adjustment of tension, comprising a support frame 1, a webbing drawing machine body 2 is provided at the top of the support frame 1, an inspection door 3 is rotatably connected to the outside of the webbing drawing machine body 2, a webbing feeding device 4 is provided at the top of the webbing drawing machine body 2, a webbing discharging device 5 is provided inside the webbing drawing machine body 2, and a tension adjusting mechanism 6 for adjusting the tension of the webbing is provided inside the webbing drawing machine body 2.

[0025] The tension adjustment mechanism 6 comprises two movable frames 61, arranged vertically within the main body 2 of the webbing tensioner. Each movable frame 61 is provided with a connecting frame 62. Within the connecting frame 62 is an adjusting wheel 63, which applies pressure to the webbing to adjust tension. The outer surface of the adjusting wheel 63 is provided with anti-slip patterns. The pressure of the adjusting wheel 63 directly controls the webbing tension. The anti-slip patterns enhance friction, prevent webbing slippage, and improve the accuracy of tension adjustment.

[0026] Furthermore, a position adjustment component 64 for adjusting the position of the two connecting frames 62 is provided in the main body 2 of the webbing drawer. The position adjustment component 64 includes a mounting frame 641 fixed to the inner wall of the main body 2 of the webbing drawer. A drive motor 642 is fixed to the top of the mounting frame 641. The output shaft of the drive motor 642 is connected to a bidirectional screw 643 through a coupling transmission. The bidirectional screw 643 is vertically arranged, and the two reverse threaded sections of the bidirectional screw 643 are each threadedly connected to a slider 644. The side of the slider 644 is fixedly connected to the movable frame 61, and the movable frame 61 is horizontally arranged. The drive motor 642 drives the slider 644 to move in opposite directions synchronously through the bidirectional screw 643, which can quickly adapt to webbings of different thicknesses and improve the compatibility of the equipment with products of multiple specifications.

[0027] Furthermore, the position adjustment assembly 64 includes a telescopic rod 645 fixed to the movable frame 61, the telescopic end of which is fixedly connected to the connecting frame 62. The telescopic rod 645 enables independent driving of the connecting frame 62, which can apply differentiated pressure to different sections of the webbing, meet complex tension distribution requirements, and enhance processing flexibility.

[0028] Furthermore, a guide groove 659 is formed on the inner wall of the movable frame 61, and a stop flange 6510 is provided on the side of the connecting frame 62 near the movable frame 61, which cooperates with the guide groove 659. The cooperation between the guide groove 659 and the stop flange 6510 ensures the stability of the movement of the connecting frame 62, prevents deviation during adjustment, and ensures the accuracy of tension control.

[0029] Furthermore, the connecting frame 62 is equipped with an angle adjustment assembly 65 for adjusting the angle of the adjusting wheel 63. This assembly includes a first connecting rod 651 that rotates within the connecting frame 62. A connecting bracket 652 is secured to the exterior of the first connecting rod 651, within which the adjusting wheel 63 rotates. An adjustment handle 653 is secured to the end of the first connecting rod 651 facing the access door 3, and a connecting gear 654 is secured to the exterior of the first connecting rod 651. The adjustment handle 653 allows for manual fine-tuning of the angle of the adjusting wheel 63 to accommodate changes in the webbing's transmission direction and optimize the contact angle for improved tension adjustment.

[0030] Furthermore, the angle adjustment assembly 65 includes a second connecting rod 655 that rotates within the connecting frame 62. A lifting ring 656 is secured to the end of the second connecting rod 655 near the access door 3. An incomplete gear 657 is secured to the exterior of the second connecting rod 655. The incomplete gear 657 meshes with the connecting gear 654. The linkage between the lifting ring 656 and the incomplete gear 657 locks and unlocks the angle of the adjustment wheel 63, preventing angular deviation during machining and ensuring tension stability.

[0031] Furthermore, a first spring 658 is provided on the outer sleeve of the second connecting rod 655. One end of the first spring 658 is fixedly connected to the connecting frame 62, and the other end is fixedly connected to the incomplete gear 657. The elastic return function of the first spring 658 allows the incomplete gear 657 to automatically return to the meshing state, simplifying the operation process and improving the reliability of the angle adjustment.

[0032] During operation, the drive motor 642 is controlled to rotate according to the thickness of the webbing being processed, causing its output shaft to rotate the bidirectional screw 643. Since the two oppositely threaded sections of the bidirectional screw 643 are threadedly connected to the two sliders 644, the two sliders 644 move synchronously in opposite directions under the action of the threads and the guidance of the mounting frame 641, thereby causing the two movable frames 61 to move relative to each other. When the spacing between the movable frames 61 is adjusted to match the webbing thickness, the drive motor 642 stops, completing the basic spacing setting for the two adjusting wheels 63.

[0033] During webbing transmission, if differential tension adjustment is required for different sections, the operator can independently adjust the position of each connecting frame 62 by controlling the telescopic stroke of the telescopic rod 645. The telescopic end of the telescopic rod 645 pushes the connecting frame 62, which, under the action of the stop flange 6510, slides along the guide groove 659 of the movable frame 61, allowing the two adjustment wheels 63 to apply specific pressure to different sections of the webbing. The anti-slip grooves on the outer periphery of the adjustment wheel 63 contact the webbing surface, adjusting the tension by varying the pressing force. The sliding stop structure of the connecting frame 62 ensures stability during the adjustment process.

[0034] When it is necessary to fine-tune the working angle of the adjusting wheel 63, the operator first pulls outward the lifting ring 656 on the inspection door 3, driving the second connecting rod 655 to move axially within the connecting frame 62. At this time, the incomplete gear 657 fixed to the outside of the second connecting rod 655 moves with it, disengaging from the connecting gear 654, and at the same time, the first spring 658 is compressed to store energy. Subsequently, the adjusting handle 653 is rotated, and the connecting frame 652 is deflected through the first connecting rod 651, causing the adjusting wheel 63 to rotate around the axis of the first connecting rod 651 to the target angle. After the angle adjustment is completed, the lifting ring 656 is released, and the elastic force of the first spring 658 pushes the incomplete gear 657 to reset, re-engaging and locking with the connecting gear 654, completing the fixation of the working angle of the adjusting wheel 63.

[0035] The above embodiments merely represent one or several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A webbing drawstring machine based on self-adjustment of tension, comprising a support frame (1), a webbing drawstring machine body (2) being provided at the top end of the support frame (1), an inspection door (3) being rotatably connected to the outside of the webbing drawstring machine body (2), a webbing feed device (4) being provided at the top end of the webbing drawstring machine body (2), and a webbing discharge device (5) being provided inside the webbing drawstring machine body (2), characterized in that: The main body (2) of the webbing drawing machine is provided with a tension adjustment mechanism (6) for adjusting the tension of the webbing; the tension adjustment mechanism (6) comprises two movable frames (61) movably arranged in the main body (2) of the webbing drawing machine and distributed in an upper and lower manner, each movable frame (61) is provided with a connecting frame (62), and the connecting frame (62) is provided with an adjusting wheel (63) for pressing the webbing to adjust the tension, and the outer peripheral surface of the adjusting wheel (63) is provided with anti-slip grooves.

2. A webbing tensioning machine based on autonomous tension adjustment according to claim 1, characterized in that: A position adjustment component (64) for adjusting the position of the two connecting frames (62) is provided in the main body (2) of the webbing drawer. The position adjustment component (64) includes a mounting frame (641) fixed to the inner wall of the main body (2) of the webbing drawer. A driving motor (642) is fixed to the top of the mounting frame (641). The output shaft of the driving motor (642) is connected to a bidirectional screw (643) through a coupling. The bidirectional screw (643) is arranged upright, and the two reverse threaded sections of the bidirectional screw (643) are each threadedly connected to a slider (644). The side of the slider (644) is fixedly connected to the movable frame (61), and the movable frame (61) is arranged horizontally.

3. The webbing tensioning machine based on self-adjustment of tension according to claim 2, characterized in that: The position adjustment assembly (64) comprises a telescopic rod (645) fixed in the movable frame (61), and the telescopic end of the telescopic rod (645) is fixedly connected to the connecting frame (62).

4. The webbing tensioning machine based on self-adjustment of tension according to claim 1, characterized in that: A guide groove (659) is provided on the inner wall of the movable frame (61), and a limiting flange (6510) cooperating with the guide groove (659) is provided on a side of the connecting frame (62) close to the movable frame (61).

5. The webbing drawing machine based on self-adjusting tension according to claim 1, characterized in that: An angle adjustment assembly (65) for adjusting the angle of the adjustment wheel (63) is provided in the connection frame (62), and the angle adjustment assembly (65) includes a first connection rod (651) that rotates in the connection frame (62), a connection frame (652) is fixed outside the first connection rod (651), and the adjustment wheel (63) rotates inside the connection frame (652); an adjustment handle (653) is fixed to the end of the first connection rod (651) facing the inspection door (3), and a connection gear (654) is fixed outside the first connection rod (651).

6. The webbing tensioning machine based on self-adjustment of tension according to claim 5, characterized in that: The angle adjustment assembly (65) includes a second connecting rod (655) rotating in the connecting frame (62), a lifting ring (656) being fixed to the end of the second connecting rod (655) close to the inspection door (3), and an incomplete gear (657) being fixed to the outside of the second connecting rod (655); the incomplete gear (657) is meshed with the connecting gear (654).

7. The webbing tensioning machine based on self-adjustment of tension according to claim 6, characterized in that: The outer sleeve of the second connecting rod (655) is provided with a first spring (658), one end of the first spring (658) is fixedly connected to the connecting frame (62), and the other end is fixedly connected to the incomplete gear (657).

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