A cloth stabilizing structure of a cloth laying machine

Abstract

This utility model belongs to the technical field of fabric spreading machine accessories, and relates to a fabric stabilizing structure for a fabric spreading machine. It includes a fabric stabilizing rod, with both ends of the rod hinged to the machine frame via a rotating assembly. The rotating assembly includes a mounting base, a fixed shaft, and a fabric stabilizing connecting rod. The mounting base is fixed to both sides of the machine frame, and the fixed shaft is mounted on the mounting base. One end of the fabric stabilizing connecting rod is hinged to the fixed shaft, and the other end is connected to the fabric stabilizing rod. A torsion spring is fitted on the fixed shaft, and the two movable ends of the torsion spring are respectively connected to the fixed shaft and the fabric stabilizing connecting rod. When the fabric stabilizing rod presses down on the fabric, the torsion spring generates a preload force that drives the fabric stabilizing rod to rotate upwards. The torque generated by this preload force is less than the torque generated by the weight of the fabric stabilizing rod. The fabric stabilizing structure for the fabric spreading machine provided by this utility model has the advantage of fast response speed, can avoid fabric accumulation, and makes the fabric conveying more stable.

Description

Technical Field

[0001] This utility model belongs to the technical field of fabric spreading machine accessories, and relates to a fabric stabilizing structure for a fabric spreading machine. Background Technology

[0002] In fabric spreading machines, a fabric stabilizing mechanism is usually installed to adjust the tension of the fabric feed. This mechanism can employ a floating, downward-pressing stabilizing rod, which dynamically adjusts the tension of the fabric after it passes through, keeping the fabric taut and consistent. For example, Chinese utility model patent CN203889740U (publication date: 2014-10-22) discloses a fabric pressing and stabilizing structure, including a pressing rod with supports at both ends. One end of each support is hinged to a fixed plate on both sides of the spreading machine roller. A stabilizing rod connecting rod is hinged to the support, and a stabilizing rod is mounted on the connecting rod. The support can rotate the pressing rod and the stabilizing rod to work with or disengage from the spreading machine roller. The structure of the stabilizing rod connecting rod hinged to the support is as follows: the support includes a main rod and a hinged rod. A connecting rod perpendicular to the main rod is located in the middle of the main rod. The end of the connecting rod is connected to the stabilizing rod connecting rod via a shaft screw, and an anti-rotation bolt for fixing the stabilizing rod connecting rod passes through the connecting rod.

[0003] The aforementioned fabric stabilizing rod is adjusted by rotating the stabilizing rod connecting rod, and the stabilizing rod presses against the fabric to keep the fabric taut. A floating stabilizing rod needs to be able to lift promptly in response to changes in fabric tension, but in actual use, due to gravity, the stabilizing rod cannot lift in time when the fabric passes through, easily causing fabric accumulation. Utility Model Content

[0004] This invention addresses the shortcomings of existing technologies by providing a stable fabric structure for a fabric spreading machine. It has the advantages of fast response speed, can avoid fabric accumulation, and makes the fabric conveying more stable.

[0005] To solve the above-mentioned technical problems, the objective of this utility model is achieved through the following technical solution:

[0006] A fabric stabilizing structure for a fabric spreading machine includes a fabric stabilizing rod. Both ends of the fabric stabilizing rod are hinged to the machine frame via a rotating assembly. The rotating assembly includes a mounting base, a fixed shaft, and a fabric stabilizing connecting rod. The mounting base is fixed to both sides of the machine frame. The fixed shaft is mounted on the mounting base. One end of the fabric stabilizing connecting rod is hinged to the fixed shaft, and the other end is connected to the fabric stabilizing rod. A torsion spring is fitted onto the fixed shaft. The two movable ends of the torsion spring are respectively connected to the fixed shaft and the fabric stabilizing connecting rod. When the fabric stabilizing rod presses down on the fabric, the torsion spring generates a preload force that drives the fabric stabilizing rod to rotate upwards. The torque generated by this preload force is less than the torque generated by the weight of the fabric stabilizing rod.

[0007] In the fabric stabilizing structure of the above-mentioned fabric spreading machine, the fixed shaft includes a first shaft and a second shaft. The first shaft is connected to the mounting base, and the second shaft is hinged to the fabric stabilizing connecting rod. A rotating support is provided between the second shaft and the fabric stabilizing connecting rod. An axial limiting member is provided on the second shaft outside the fabric stabilizing connecting rod. The rotating support can be a bearing or a bushing, and the axial limiting member can be a retaining ring or a limiting washer locked with screws.

[0008] In the above-mentioned fabric stabilization structure of a fabric spreading machine, the first shaft and the second shaft are coaxially arranged and the radial dimension of the first shaft is larger than that of the second shaft. A first torsion spring mounting hole is provided on the outer end face of the first shaft. The torsion spring is fitted on the second shaft and its first movable end is assembled in the first torsion spring mounting hole. The first shaft and the second shaft can be integrally formed or can be a separate structure.

[0009] In the fabric stabilizing structure of the above-mentioned fabric spreading machine, a rubber sleeve is fitted on the second shaft, the rubber sleeve covers the area where the torsion spring is located and leaves a gap between it and the inner side of the fabric stabilizing connecting rod.

[0010] In the fabric stabilizing structure of the above-mentioned fabric spreading machine, the fabric stabilizing connecting rod is provided with a second torsion spring mounting hole and a torsion spring locking hole adjacent to each other. The second movable end of the torsion spring is assembled in the second torsion spring mounting hole, and a locking screw for locking the second movable end of the torsion spring is installed in the torsion spring locking hole. Preferably, the locking screw is a washer screw or used in conjunction with a washer.

[0011] In the fabric stabilization structure of the above-mentioned fabric spreading machine, the fixed shaft is rotatably connected to the mounting base and locked with screws, and the preload of the torsion spring changes accordingly when the fixed shaft rotates.

[0012] In the fabric stabilization structure of the above-mentioned fabric spreading machine, the first shaft is provided with a plurality of first torsion spring mounting holes. When the first movable end of the torsion spring is assembled in different first torsion spring mounting holes, the torsion spring has different preload.

[0013] Compared with the prior art, this utility model has the following advantages:

[0014] This invention provides a fabric stabilizing structure for a fabric spreading machine. The upward preload provided by a torsion spring partially counteracts the weight of the stabilizing rod, significantly reducing lifting resistance. This allows the stabilizing rod to respond and lift more quickly during use, preventing fabric accumulation and improving the stability and quality of the fabric spreading process. Furthermore, this invention provides an adjustable torsion spring preload structure to flexibly adapt to the stabilizing needs of different fabrics. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present invention;

[0016] Figure 2 yes Figure 1 Enlarged view of point A;

[0017] Figure 3 This is a partial sectional view (rotating assembly) of this utility model;

[0018] Figure 4 This is a partial exploded view of the present invention (rotating assembly);

[0019] Reference numerals in the attached drawings: 1. Stabilizing rod; 2. Frame; 3. Mounting base; 4. Fixed shaft; 5. Stabilizing connecting rod; 6. Torsion spring; 7. First shaft; 8. Second shaft; 9. Rotating support; 10. Axial limiting component; 11. First torsion spring mounting hole; 12. Rubber sleeve; 13. Second torsion spring mounting hole; 14. Torsion spring locking hole; 15. Locking screw. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-4 :

[0021] A fabric stabilizing structure for a fabric spreading machine includes a fabric stabilizing rod. Both ends of the fabric stabilizing rod are hinged to the machine frame via a rotating assembly. The rotating assembly includes a mounting base, a fixed shaft, and a fabric stabilizing connecting rod. The mounting base is fixed to both sides of the machine frame. The fixed shaft is mounted on the mounting base. One end of the fabric stabilizing connecting rod is hinged to the fixed shaft, and the other end is connected to the fabric stabilizing rod. A torsion spring is fitted onto the fixed shaft. The two movable ends of the torsion spring are respectively connected to the fixed shaft and the fabric stabilizing connecting rod. When the fabric stabilizing rod presses down on the fabric, the torsion spring generates a preload force that drives the fabric stabilizing rod to rotate upwards. The torque generated by this preload force is less than the torque generated by the weight of the fabric stabilizing rod.

[0022] The working principle of this embodiment is as follows: During the stable conveying stage, the stabilizing rod rotates and presses down around a fixed axis under its own gravity, so that a uniform tension is formed on the surface of the fabric. At this time, the torsion spring is twisted and compressed due to the change in the rotation angle of the stabilizing rod, thereby accumulating elastic potential energy in the upward direction. In this state, the preload torque generated by the torsion spring is always less than the gravitational torque of the stabilizing rod, ensuring that the fabric is stably pressed. When the dynamic tension of the fabric changes, the stabilizing rod floats to allow the fabric to pass smoothly and balance the tension. At this time, the preload force of the torsion spring and the thrust of the fabric form a resultant force to jointly resist the resistance, so that the stabilizing rod can respond quickly and lift up, avoiding the accumulation of fabric in front of the stabilizing rod.

[0023] In this embodiment, the stabilizing link can rotate freely around a fixed axis. Its rotation structure is as follows: the fixed axis includes a first shaft and a second shaft. The first shaft is connected to the mounting base, and the second shaft is hinged to the stabilizing link. A rotation support is provided between the second shaft and the stabilizing link. An axial limiting member is provided on the second shaft outside the stabilizing link. The rotation support can be a bearing or a bushing, and the axial limiting member can be a retaining ring or a limiting washer locked with screws.

[0024] The specific installation structure of the torsion spring in this embodiment is as follows: the first shaft and the second shaft are coaxially arranged and the radial dimension of the first shaft is larger than that of the second shaft. A first torsion spring mounting hole is provided on the outer end face of the first shaft. The torsion spring is fitted on the second shaft and its first movable end is assembled in the first torsion spring mounting hole. The first shaft and the second shaft can be integrally formed or can be a separate structure.

[0025] Furthermore, the stabilizing connecting rod is provided with a second torsion spring mounting hole and a torsion spring locking hole adjacent to each other. The second movable end of the torsion spring is assembled in the second torsion spring mounting hole, and a locking screw for locking the second movable end of the torsion spring is installed in the torsion spring locking hole. Preferably, the locking screw is a washer screw or used in conjunction with a washer. When the locking screw is tightened, the washer presses against the second movable end of the torsion spring, which can increase the reliability of the installation structure.

[0026] In the fabric stabilizing structure of the above-mentioned fabric spreading machine, a rubber sleeve is fitted on the second shaft, the rubber sleeve covers the area where the torsion spring is located and leaves a gap between it and the inner side of the fabric stabilizing connecting rod.

[0027] This embodiment further provides an adjustable structure for the torsion spring preload:

[0028] The aforementioned fixed shaft is rotatably connected to the mounting base and locked with screws. When the fixed shaft rotates, the preload of the torsion spring changes accordingly. When it is necessary to change the preload, loosen the screws and then rotate the fixed shaft slightly. The torsion angle of the torsion spring changes, thereby changing the preload. After adjusting to a suitable preload, tighten the screws again to lock the fixed shaft.

[0029] The adjustable structure for the preload of the torsion spring in this embodiment can also be replaced with other structures. For example, the first shaft is provided with a plurality of first torsion spring mounting holes. When the first movable end of the torsion spring is assembled in different first torsion spring mounting holes, the torsion spring has different preload.

[0030] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A fabric stabilizing structure for a fabric spreading machine, comprising a fabric stabilizing rod (1), wherein both ends of the fabric stabilizing rod (1) are hinged to a machine frame (2) via a rotating assembly, characterized in that, The rotating assembly includes a mounting base (3), a fixed shaft (4), and a fabric stabilizing rod (5). The mounting base (3) is fixed to both sides of the frame (2). The fixed shaft (4) is mounted on the mounting base (3). One end of the fabric stabilizing rod (5) is hinged to the fixed shaft (4), and the other end is connected to the fabric stabilizing rod (1). A torsion spring (6) is mounted on the fixed shaft (4). The two movable ends of the torsion spring (6) are connected to the fixed shaft (4) and the fabric stabilizing rod (5) respectively. When the fabric stabilizing rod (1) presses down on the fabric, the torsion spring (6) generates a preload force that drives the fabric stabilizing rod (1) to rotate upward. The torque generated by this preload force is less than the torque generated by the weight of the fabric stabilizing rod (1).

2. The fabric stabilizing structure of a fabric spreading machine according to claim 1, characterized in that, The fixed shaft (4) includes a first shaft body (7) and a second shaft body (8). The first shaft body (7) is connected to the mounting base (3), and the second shaft body (8) is hinged to the stabilizing rod (5). A rotating support member (9) is provided between the second shaft body (8) and the stabilizing rod (5). An axial limiting member (10) is provided on the second shaft body (8) outside the stabilizing rod (5).

3. The fabric stabilizing structure of a fabric spreading machine according to claim 2, characterized in that, The first shaft (7) and the second shaft (8) are coaxially arranged and the radial dimension of the first shaft (7) is larger than that of the second shaft (8). A first torsion spring mounting hole (11) is provided on the outer end face of the first shaft (7). The torsion spring (6) is fitted on the second shaft (8) and its first movable end is assembled in the first torsion spring mounting hole (11).

4. The fabric stabilizing structure of a fabric spreading machine according to claim 3, characterized in that, A rubber sleeve (12) is fitted on the second shaft (8). The rubber sleeve (12) covers the area where the torsion spring (6) is located and leaves a gap between it and the inner side of the stabilizing connecting rod (5).

5. The fabric stabilizing structure of a fabric spreading machine according to claim 1, characterized in that, The stabilizing connecting rod (5) is provided with a second torsion spring mounting hole (13) and a torsion spring locking hole (14) adjacent to each other. The second movable end of the torsion spring (6) is assembled in the second torsion spring mounting hole (13), and a locking screw (15) for locking the second movable end of the torsion spring is installed in the torsion spring locking hole (14).

6. The fabric stabilizing structure of a fabric spreading machine according to claim 1, characterized in that, The fixed shaft (4) is rotatably connected to the mounting base (3) and locked with screws. When the fixed shaft (4) rotates, the preload of the torsion spring (6) changes accordingly.

7. The fabric stabilizing structure of a fabric spreading machine according to claim 3, characterized in that, The first shaft (7) is provided with a plurality of first torsion spring mounting holes (11). When the first movable end of the torsion spring (6) is assembled in different first torsion spring mounting holes (11), the torsion spring (6) has different preload.

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