Yarn feeding device for pilot plant test machine

Abstract

The yarn feeding device comprises a yarn collecting plate installed on a support, the support is fixedly installed on a machine frame, a plurality of yarn feeding holes are evenly formed in the yarn collecting plate at intervals, each row of yarn feeding holes are sequentially inclined rightwards from top to bottom, connecting lines of the edge yarn feeding holes are in a parallelogram shape, and each yarn feeding hole is movably sleeved with a porcelain eye. A first tensioning roller and a second tensioning roller are further arranged behind the yarn collecting plate, the two ends of the first tensioning roller and the two ends of the second tensioning roller are fixed to the support through screws and nuts matched with the screws respectively, the first tensioning roller is close to the first row of yarn inlet holes, and the second tensioning roller is arranged below the first tensioning roller at intervals. The device is beneficial to uniformly separating the yarns at intervals, ensuring the consistency of warp density, avoiding doubling or jamming of the yarns caused by over-excitation jumping under the action of tension, improving the tension balance of the yarns, and being beneficial to rear-end traction.

Description

Technical Field

[0001] The utility model belongs to the technical field of textiles, and in particular relates to a yarn feeding device for a pilot machine. Background Art

[0002] The pilot machine is a test equipment that simulates the production of dipped rubber cords. The previous process requires the yarn wound on the bobbin to be unwound and then fed into the traction mechanism through the yarn feeding device to ensure balanced tension and smooth yarn feeding. The existing yarn feeding device is to set multiple columns above and below the bracket, and the columns are movably connected to the bracket. The yarn passes through the columns. Due to the tension, the yarn jumps up and down, which can easily lead to parallelism and jamming between the columns. It is often necessary to stop and manually clean and trim, which affects the production efficiency and process quality of the cord. Utility Model Content

[0003] The utility model aims to provide a yarn feeding device for a pilot machine, so as to solve the problem that the existing yarn feeding device is easy to be paralleled and stuck.

[0004] The technical solution adopted by the utility model is a yarn feeding device for a pilot machine, comprising a yarn collecting plate installed on a bracket, the bracket is fixedly installed on a frame, a plurality of yarn feeding holes are evenly spaced on the yarn collecting plate, each row of yarn feeding holes is inclined rightward from top to bottom, the connecting line of the edge yarn feeding holes is a parallelogram, and a ceramic eye is provided on a movable sleeve of each yarn feeding hole.

[0005] Preferably, each row of the yarn inlet holes is provided with 8-10 yarn inlet holes, and the horizontal distance between the first row of yarn inlet holes in the next row of yarn inlet holes and the first row and the second row of yarn inlet holes in the previous row of yarn inlet holes is 6 mm.

[0006] Preferably, the distance between two adjacent rows of yarn inlet holes is 10-15 mm.

[0007] Preferably, a first tensioning roller and a second tensioning roller are further provided behind the above-mentioned yarn collecting plate, and both ends of the first tensioning roller and the second tensioning roller are respectively fixed to the bracket by screws and their matching nuts. The first tensioning roller is close to the first row of yarn inlet holes, and the second tensioning roller is arranged below the first tensioning roller.

[0008] Preferably, the above-mentioned bracket is composed of two oppositely arranged L-plates, the bracket bottom plate is connected to the frame with bolts, and the first adjustment groove and the second adjustment groove are respectively opened on the two bracket side plates, the first adjustment groove is located above the second adjustment groove and both are arc-shaped, and the first tensioning roller and the second tensioning roller are connected to the bracket through the first adjustment groove and the second adjustment groove respectively.

[0009] Preferably, both the first adjustment groove and the second adjustment groove bend towards the front of the yarn collecting plate. The included angle between the connecting line of the top and bottom ends of the first adjustment groove and the horizontal line is 95 - 100°, and the included angle between the connecting line of the top and bottom ends of the second adjustment groove and the horizontal line is 60 - 65°.

[0010] Preferably, the above-mentioned yarn collecting plate is in a U shape, and both ends are fixedly connected to the bracket by screws.

[0011] Compared with the prior art, the beneficial effect of the present utility model is that by using a yarn collecting plate with multiple yarn inlet holes for yarn inlet, and each row of yarn inlet holes inclines to the right from top to bottom in sequence, and the connecting line of the edge yarn inlet holes is a parallelogram. While realizing the yarn inlet of multiple yarns, it is beneficial to evenly separate the yarns at intervals, ensure the same warp density, avoid the over - excited jumping of the yarns under the action of tension, resulting in yarn merging or yarn jamming, ensure the normal progress of production, and improve the production quality.

[0012] Among them, a first tension roller and a second tension roller are arranged on the back of the yarn collecting plate. The yarns stratified by the yarn collecting holes pass through the tension rollers to be tensioned, initially improving the tension balance of the yarns, which is beneficial for the subsequent traction.

[0013] The first tension roller and the second tension roller are respectively connected to the bracket through an arc - shaped first adjustment groove and a second adjustment groove, which is beneficial for adjusting the tension rollers in multiple directions, further improving the tensioning effect on the yarns, and meeting the production requirements of different products. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front - view structure diagram of the yarn inlet device;

[0015] Figure 2 It is a side - view of the bracket;

[0016] Figure 3 It is a back - view structure diagram of the yarn inlet device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following will further explain and illustrate the present utility model in conjunction with the accompanying drawings of the specification, so as to be better understood by those skilled in the art.

[0018] Embodiment 1

[0019] As Figure 1-3 shown, a yarn inlet device for a pilot - scale machine includes a bracket 2 and a yarn collecting plate 3. The bracket 2 is composed of two relatively arranged L - shaped plates. The bottom plate of the bracket 2 is connected to the frame 1 by bolts. The yarn collecting plate 3 is in a U shape, and both ends are respectively fixedly connected to the bracket 2 by screws, which is beneficial for ensuring that the yarn collecting plate 3 is horizontally and firmly installed on the bracket 2.

[0020] A number of yarn inlet holes 4 are evenly spaced on the yarn collecting plate 3, with 8-10 yarn inlet holes in each row, and a total of 4 rows of yarn inlet holes 4. Each row of yarn inlet holes 4 is tilted to the right from top to bottom, that is, the second row of yarn inlet holes 4 is shifted to the right by a set distance compared to the first row of yarn inlet holes 4, the third row of yarn inlet holes 4 is shifted to the right by a set distance compared to the second row of yarn inlet holes 4, and the fourth row is set similarly, and the connecting line of the yarn inlet holes 4 at the edge is a parallelogram. A ceramic eye 9 is provided on each yarn inlet hole 4, and there is a certain movable space between the ceramic eye 9 and the yarn collecting plate 2, which can effectively reduce the wear on the yarn when the yarn jumps violently.

[0021] In order to ensure that the line density meets the production needs of various products, the horizontal distance between the first row of yarn inlet holes 4 and the first and second rows of yarn inlet holes 4 in the previous row of yarn inlet holes 4 is 6mm; the distance between two adjacent rows of yarn inlet holes is 10-15mm, which can ensure the balance of yarn density and tension.

[0022] A first tensioning roller 7 and a second tensioning roller 8 are also provided behind the yarn collecting plate 3. Both ends of the first tensioning roller 7 and the second tensioning roller 8 are fixed to the bracket 2 by screws and matching nuts, respectively. The first tensioning roller 7 is close to the first row of yarn inlet holes 4, and the second tensioning roller 8 is arranged below the first tensioning roller 7 at intervals. The yarns of the first and second rows of yarn inlet holes 4 enter the traction mechanism after being tensioned by the first tensioning roller 7, and the yarns of the third and fourth rows of yarn inlet holes 4 enter the traction mechanism after being tensioned by the second tensioning roller 8, which preliminarily improves the tension balance of the yarn and is beneficial to the rear end traction.

[0023] In order to meet the production needs of different products and improve the tensioning effect on the yarn, the first adjustment groove 5 and the second adjustment groove 6 are respectively opened on the side panels of the two brackets. The first adjustment groove 5 is located above the second adjustment groove 6 and both are arc-shaped. The first tensioning roller 7 and the second tensioning roller 8 are connected to the bracket 2 through the first adjustment groove 5 and the second adjustment groove 6 respectively.

[0024] Furthermore, the first adjustment groove 5 and the second adjustment groove 6 are both bent toward the front of the yarn collecting plate 2, the angle between the line between the top and the bottom of the first adjustment groove 5 and the horizontal line is 95-100°, and the angle between the line between the top and the bottom of the second adjustment groove 6 and the horizontal line is 60-65°. This is conducive to multi-directional and multi-angle adjustment of the first tensioning roller 7 and the second tensioning roller 8. The first tensioning roller 7 and the second tensioning roller 8 act on the yarns of the upper and lower layers respectively, which is conducive to keeping all the yarns at the rear end balanced and entering the next stage of the equipment with stable warp density and tension.

[0025] The device feeds yarn by adopting a yarn collecting plate 2 with multiple yarn feeding holes 4, and each row of yarn feeding holes 4 is inclined to the right from top to bottom, and the connecting line of the edge yarn feeding holes 4 is a parallelogram. When multiple yarns are fed at the same time, it is beneficial to evenly space and separate the yarns, ensure consistent warp density, avoid excessive yarn jumping under tension to cause parallelism or jamming, and help to improve the tension balance of the yarn, ensure normal production, and improve production quality.

[0026] The above-mentioned embodiments are only for describing the preferred implementation of the utility model, and are not intended to limit the scope of the utility model. Without departing from the design spirit and principle of the utility model, various modifications and improvements made by those skilled in the art to the technical solution of the utility model shall fall within the protection scope determined by the claims of the utility model.

Claims

1. A yarn feeding device for a pilot machine, characterized in that: It includes a yarn collecting plate installed on a bracket, and the bracket is fixedly installed on a frame. A number of yarn inlet holes are evenly spaced on the yarn collecting plate. Each row of yarn inlet holes inclines to the right from top to bottom in sequence, and the connection line of the edge yarn inlet holes is a parallelogram. A porcelain eye is movably sleeved on each yarn inlet hole.

2. The yarn feeding device for the pilot machine according to claim 1, characterized in that: Each row of yarn inlet holes has 8 - 10. The horizontal distance between the first column of yarn inlet holes in the next row of yarn inlet holes and the first column and the second column of yarn inlet holes in the previous row of yarn inlet holes in this row is 6 mm.

3. The yarn feeding device for a pilot machine according to any one of claims 1 or 2, characterized in that: The distance between adjacent two rows of yarn inlet holes is 10 - 15 mm.

4. The yarn feeding device for the pilot machine according to claim 1, characterized in that: A first tensioning roller and a second tensioning roller are further arranged behind the yarn collecting plate. The two ends of the first tensioning roller and the second tensioning roller are respectively fixed on the bracket through screws and their matching nuts. The first tensioning roller is close to the first row of yarn inlet holes, and the second tensioning roller is arranged at intervals below the first tensioning roller.

5. The yarn feeding device for the pilot machine according to claim 4, characterized in that: The bracket is composed of two relatively arranged L-shaped plates. The bottom plate of the bracket is connected to the frame by bolts. First adjustment grooves and second adjustment grooves are respectively formed on the two bracket side plates correspondingly. The first adjustment groove is located above the second adjustment groove and both are arc-shaped. The first tensioning roller and the second tensioning roller are respectively connected to the bracket through the first adjustment groove and the second adjustment groove.

6. The yarn feeding device for the pilot machine according to claim 5, characterized in that: Both the first adjustment groove and the second adjustment groove bend towards the front of the yarn collecting plate. The included angle between the connection line between the top end and the bottom end of the first adjustment groove and the horizontal line is 95 - 100°, and the included angle between the connection line between the top end and the bottom end of the second adjustment groove and the horizontal line is 60 - 65°.

7. The yarn feeding device for the pilot machine according to claim 1, characterized in that: The yarn collecting plate is in a C shape, and both ends are fixedly connected to the bracket by screws.

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