A cloth paving machine's edge pushing structure

Abstract

This utility model belongs to the technical field of fabric spreading machine accessories, and relates to an edge-trimming structure for a fabric spreading machine. It includes an edge-trimming flat tube, with a fabric guide plate horizontally arranged above the tube. Edge-trimming mechanisms driven by an edge-trimming motor are symmetrically arranged on both sides of the fabric guide plate. Each edge-trimming mechanism includes a first pulley, a second pulley, and a synchronous belt. The upper surface of the synchronous belt forms an edge-trimming surface that connects with the fabric guide plate. The edge-trimming surface is conveyed outwards and inclined upwards along the conveying direction. The first pulley is mounted on an inner fixed seat, and the second pulley is mounted on an outer movable seat. A connecting pipe is provided between the fixed seat and the movable seat. One end of the connecting pipe is hinged to the fixed seat, and the other end is hinged to the movable seat. The movable seat is connected to a height adjustment mechanism. The edge-trimming structure for the fabric spreading machine provided by this utility model has better edge-trimming effect and better adaptability.

Description

Technical Field

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

[0002] In fabric spreading machines, to prevent fabric from wrinkling during transport, an edge-pulling mechanism is usually installed to extend the fabric to both sides. For example, Chinese Utility Model Patent CN207404588U (publication date: 2018-05-25) discloses an edge-pulling mechanism. The two ends of the edge-pulling mounting flat tube are fixed to the left and right fabric table arms. The edge-pulling mounting flat tube is equipped with a left edge-pulling device and a right edge-pulling device. Both the left and right edge-pulling devices include two spaced-apart pipe clamps. Each pipe clamp includes a clamping part and a mounting plate. The driving wheel and the driven wheel are respectively mounted on the mounting plates of the corresponding pipe clamps. The driving wheel and the driven wheel are connected by a synchronous belt drive. A motor is installed on the connecting pipe, and the motor drives the driving wheel to rotate. The left and right edge-pulling devices are mounted on the edge-pulling mounting flat tube through the clamping parts of the pipe clamps.

[0003] The left and right edge-pulling devices of the aforementioned edge-pulling mechanism are both horizontally set. In actual use, because the fabric has a certain elasticity, when the fabric does not have wrinkles, it will still be stretched to both sides by the edge-pulling device, which will have an adverse effect on the laying of the fabric. Utility Model Content

[0004] This invention addresses the shortcomings of existing technologies by providing a fabric spreading machine edge-trimming structure that offers better edge-trimming effect and improved adaptability.

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

[0006] An edge-trimming structure for a fabric spreading machine includes an edge-trimming flat tube. A fabric-passing plate is horizontally arranged above the edge-trimming flat tube. Edge-trimming mechanisms driven by an edge-trimming motor are symmetrically arranged on both sides of the fabric-passing plate. The edge-trimming mechanism includes a first pulley, a second pulley, and a synchronous belt. The upper surface of the synchronous belt forms an edge-trimming surface that connects with the fabric-passing plate. The edge-trimming surface is conveyed outward and inclined upward along the conveying direction. The first pulley is mounted on an inner fixed seat, and the second pulley is mounted on an outer movable seat. A connecting pipe is provided between the fixed seat and the movable seat. One end of the connecting pipe is hinged to the fixed seat, and the other end is hinged to the movable seat. The movable seat is connected to a height adjustment mechanism.

[0007] In the aforementioned edge-trimming structure of a fabric spreading machine, preferably, the inclination angle of the edge-trimming surface is 1-3° (the angle between the edge-trimming surface and the horizontal plane).

[0008] In the edge-pulling structure of the above-mentioned fabric spreading machine, the height adjustment mechanism includes an adjustment bracket fixed on the edge-pulling flat tube. The adjustment bracket is provided with a vertically extending strip hole. The movable seat is adjustablely assembled in the strip hole of the adjustment bracket by bolts. The lateral dimension of the strip hole is larger than the radial dimension of the bolt shank.

[0009] In the edge-trimming structure of the above-mentioned fabric spreading machine, the movable seat is provided with a strip-shaped hole extending to the left and right. The second pulley is adjustablely mounted in the strip-shaped hole of the movable seat. When the second pulley is mounted in different positions of the strip-shaped hole, the synchronous belt has different tensions.

[0010] In the edge-trimming structure of the above-mentioned fabric spreading machine, the bottom of the movable seat is provided with a threaded hole, and an adjusting bolt is screwed into the threaded hole. A strip-shaped hole extending to the left and right is provided through the edge-trimming flat tube. The adjusting bolt is rotatably assembled in the strip-shaped hole and axially fixed to the edge-trimming flat tube. The axially fixed structure adopts a conventional structure in the art, such as a stepped structure for limiting at the upper end and a retaining ring or other limiting structure installed at the lower end. The movable seat can also be driven by other mechanisms, such as a small cylinder.

[0011] In the edge-trimming structure of the above-mentioned fabric spreading machine, the two ends of the fabric guide plate are respectively fixedly connected to the fixed seats of the edge-trimming mechanisms on both sides, and its upper surface is horizontally arranged and parallel to the edge-trimming flat tube; preferably, the fabric guide plate is an L-shaped plate, and the two ends of its vertical plate extend outward and are connected to the first pulley axis of the fixed seat.

[0012] In the edge-trimming structure of the above-mentioned fabric spreading machine, a double-groove pulley is mounted on the motor shaft of the edge-trimming motor. The double-groove pulley is connected to two first pulleys via a synchronous belt. One of the synchronous belts changes the transmission direction by cross transmission, and a bearing is provided at the cross point of the synchronous belt.

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

[0014] This invention provides a weft-trimming structure for a fabric spreading machine, employing a V-shaped weft-trimming structure. During fabric feeding, the fabric's own weight generates an inward component, partially offsetting the weft-trimming force of the weft-trimming mechanism and eliminating unnecessary fabric stretching. It can also smooth out wrinkles, thus improving the weft-trimming effect. This invention also provides an angle adjustment structure for the weft-trimming mechanism, allowing for angle adjustment within a very small range (1-3°) to adapt to different fabrics, exhibiting excellent adaptability. Furthermore, the angle adjustment structure of this invention uses a fixed base, a movable base, and a connecting pipe, offering advantages such as structural stability, convenient adjustment, and accurate positioning. Attached Figure Description

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

[0016] Figure 2 This is the front view of this utility model;

[0017] Figure 3 yes Figure 2 Enlarged view of point A;

[0018] Reference numerals in the attached diagram: 1. Edge-trimming flat tube; 2. Fabric guide plate; 3. Edge-trimming motor; 4. First pulley; 5. Second pulley; 6. Synchronous belt; 7. Fixed seat; 8. Moving seat; 9. Connecting pipe; 10. Adjusting bracket; 11. Adjusting bolt; 12. Double groove pulley; 13. Bearing. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-3 :

[0020] An edge-trimming structure for a fabric spreading machine includes an edge-trimming flat tube 1. A fabric-passing plate 2 is horizontally arranged above the edge-trimming flat tube 1. An edge-trimming mechanism driven by an edge-trimming motor 3 is symmetrically arranged on both sides of the fabric-passing plate 2. The edge-trimming mechanism includes a first pulley 4, a second pulley 5, and a synchronous belt 6. The upper surface of the synchronous belt 6 forms an edge-trimming surface that connects with the fabric-passing plate 2. The edge-trimming surface is conveyed outward and inclined upward along the conveying direction. The first pulley 4 is mounted on an inner fixed seat 7, and the second pulley 5 is mounted on an outer movable seat 8. A connecting pipe 9 is provided between the fixed seat 7 and the movable seat 8. One end of the connecting pipe 9 is hinged to the fixed seat 7, and the other end is hinged to the movable seat 8. The movable seat 8 is connected to a height adjustment mechanism.

[0021] The working principle of this embodiment is as follows: The conveyed fabric passes through the fabric guide plate 2 and the edge-trimming mechanisms on both sides. The fabric guide plate 2 and the edge-trimming mechanisms on both sides form a V-shaped conveying structure with a small angle (the inclination angle of the edge-trimming surface is 1-3°). While the fabric is being conveyed, the edge-trimming mechanisms on both sides continuously act on the bottom of the fabric through the cyclically conveyed edge-trimming surface, applying an outward force to the fabric to smooth out wrinkles. In this embodiment, due to the inclined setting of the edge-trimming surface, the fabric also has a small inclination angle during conveying. The fabric's own weight will generate an inward component. When the edge-trimming surface applies an outward force, this inward horizontal component generated by the fabric's weight can partially offset the edge-trimming force. In the ideal state where the fabric has no wrinkles, the fabric itself has sufficient tension, and stretching it requires a large force. The partially offset edge-trimming force cannot overcome the tension to stretch the fabric, thereby significantly reducing or even eliminating unnecessary stretching. When wrinkles appear in the fabric, the fabric tension decreases, and at this time, only a small edge-trimming force is needed to smooth out the wrinkles. Therefore, this embodiment can achieve the goal of "only smoothing the fabric when there are wrinkles, and minimizing interference when there are no wrinkles", thus obtaining better fabric flatness and improving fabric quality.

[0022] The specific structure of the height adjustment mechanism in this embodiment is as follows: The height adjustment mechanism includes an adjustment bracket 10 fixed on the edge-trimming flat tube 1. The adjustment bracket 10 is provided with a vertically extending strip hole. The movable seat 8 is adjustablely assembled in the strip hole of the adjustment bracket 10 by bolts. The lateral dimension of the strip hole is larger than the radial dimension of the bolt shank. When the movable seat 8 is adjusted, it can provide a small lateral clearance space. When the movable seat 8 moves up / down along the strip hole of the adjustment bracket 10, the height of the second pulley 5 increases / decreases, and the two ends of the connecting tube 9 rotate accordingly, and the angle of the edge-trimming surface increases / decreases.

[0023] Furthermore, the movable seat 8 is provided with a strip-shaped hole extending to the left and right. The second pulley 5 is adjustablely mounted in the strip-shaped hole of the movable seat 8. When the second pulley 5 is mounted in different positions of the strip-shaped hole, the timing belt 6 has different tensions. When the height is adjusted, the tension of the timing belt 6 can be adjusted through the structure.

[0024] The movable seat 8 is driven to lift and lower in the following way: the bottom of the movable seat 8 is provided with a threaded hole, and an adjusting bolt 11 is screwed into the threaded hole. A strip-shaped hole extending to the left and right is provided through the flat tube 1. The adjusting bolt 11 is rotatably assembled in the strip-shaped hole and axially fixed to the flat tube 1. The strip-shaped hole provides a small lateral clearance space for the adjusting bolt 11. The axially fixed structure adopts a conventional structure in the art, such as a stepped structure for limiting at the upper end and a retaining ring or other limiting structure installed at the lower end. When the adjusting bolt 11 is rotated, the axial position of the movable seat 8 screwed to it changes, thereby causing a change in height.

[0025] Furthermore, the two ends of the fabric guide plate 2 are respectively fixedly connected to the fixed seats 7 of the two side edge-trimming mechanisms, and its upper surface is horizontally arranged and parallel to the edge-trimming flat tube 1; preferably, the fabric guide plate 2 is an L-shaped plate, and the two ends of its vertical plate extend outward and are connected to the axis of the first pulley 4 of the fixed seat 7.

[0026] The driving structure of this embodiment is as follows: a double-groove pulley 12 is mounted on the motor shaft of the edge-trimming motor 3. The double-groove pulley 12 is connected to two first pulleys 4 by a synchronous belt 6. One of the synchronous belts 6 changes the transmission direction by cross transmission. A bearing 13 is provided at the cross point of the synchronous belt 6.

[0027] 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 sewing structure for a fabric spreading machine, comprising a sewing flat tube (1), wherein a fabric pass-through plate (2) is horizontally arranged above the sewing flat tube (1), and sewing mechanisms driven by sewing motors (3) are symmetrically arranged on both sides of the fabric pass-through plate (2), characterized in that, The edge-trimming mechanism includes a first pulley (4), a second pulley (5), and a synchronous belt (6). The upper surface of the synchronous belt (6) forms an edge-trimming surface that connects with the fabric guide plate (2). The edge-trimming surface is conveyed outward and inclined upward along the conveying direction. The first pulley (4) is mounted on the inner fixed seat (7), and the second pulley (5) is mounted on the outer movable seat (8). A connecting pipe (9) is provided between the fixed seat (7) and the movable seat (8). One end of the connecting pipe (9) is hinged to the fixed seat (7), and the other end is hinged to the movable seat (8). The movable seat (8) is connected to a height adjustment mechanism.

2. The edge-trimming structure of a fabric spreading machine according to claim 1, characterized in that, The inclination angle of the edge is 1-3°.

3. The edge-trimming structure of a fabric spreading machine according to claim 1, characterized in that, The height adjustment mechanism includes an adjustment bracket (10) fixed on the flat tube (1), the adjustment bracket (10) is provided with a strip hole extending vertically, and the movable seat (8) is adjustablely assembled in the strip hole of the adjustment bracket (10) by bolts.

4. The edge-trimming structure of a fabric spreading machine according to claim 3, characterized in that, The movable seat (8) is provided with a strip-shaped hole extending to the left and right, and the second pulley (5) is adjustablely fitted into the strip-shaped hole of the movable seat (8).

5. The edge-trimming structure of a fabric spreading machine according to claim 1, characterized in that, The bottom of the movable seat (8) is provided with a threaded hole, and an adjusting bolt (11) is screwed into the threaded hole. A strip-shaped hole extending to the left and right is provided through the edge flat tube (1). The adjusting bolt (11) is rotatably assembled in the strip-shaped hole and is axially fixed to the edge flat tube (1).

6. The edge-trimming structure of a fabric spreading machine according to claim 1, characterized in that, The two ends of the cloth-passing plate (2) are fixedly connected to the fixed seats (7) of the two-sided edge-trimming mechanism, and its upper surface is horizontally set and parallel to the edge-trimming flat tube (1).

7. The edge-trimming structure of a fabric spreading machine according to claim 1, characterized in that, The motor shaft of the edge-trimming motor (3) is fitted with a double-groove pulley (12). The double-groove pulley (12) is connected to two first pulleys (4) via a synchronous belt (6). One of the synchronous belts (6) changes the transmission direction by cross transmission. A bearing (13) is provided at the intersection of the synchronous belts (6).

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