Anti-self-twist yarn control device during yarn unwinding and device for safety belt loom

Abstract

The utility model relates to a kind of yarn device and device for safety belt loom for preventing self-twist when yarn is unwound, including shell, yarn inlet hole, yarn outlet hole are respectively arranged on the opposite side wall of shell, at least two guide spindles are provided in shell, yarn is wound on yarn drum and is guided out from yarn outlet hole via anti-collapse tray, yarn inlet hole, guide spindle;Gravity piece is hung on yarn between the adjacent two guide spindles, and yarn is tensioned between the adjacent two guide spindles by leading out from yarn drum;By setting the device between yarn drum and loom, when yarn is guided out and in loose state, gravity piece can tension yarn on guide spindle by gravity, now yarn 4 is tensioned on guide spindle in V shape, so that yarn outside shell can avoid self-twist structure due to loosening, eliminate self-twist knot phenomenon when yarn is unwound from yarn drum, eliminate broken yarn, weaving defect caused, improve weaving product quality, in addition relative unwinding type creel, improve yarn change efficiency.

Description

Technical Field

[0001] This utility model relates to a yarn anti-twisting device, specifically a yarn anti-twisting control device during yarn unwinding and a device used in a safety belt loom. Background Technology

[0002] In the process of weaving ribbon products such as car seat belts on a ribbon loom, the yarn (such as twisted yarn) wound on the yarn bobbin needs to be unwound and fed. Since the twisted yarn itself is stacked and wound on the yarn bobbin, when the unwinding speed of the yarn bobbin exceeds the pulling speed of the ribbon loom for the twisted yarn, the unwound twisted yarn will form a slack accumulation between the yarn bobbin and the ribbon loom. These loose twisted yarns are very prone to twisting (as shown in Figure 1), which will not only seriously interfere with the subsequent weaving process of the ribbon loom, but may even cause the twisted yarn to break, resulting in production interruption.

[0003] In summary, how to prevent the twisted yarn from self-twisting due to loosening between the yarn bobbin and the weaving machine after it is led out of the yarn bobbin has become a key problem that researchers in this field urgently need to solve. Utility Model Content

[0004] The technical problem to be solved by this utility model is: how to prevent the twisted yarn from self-twisting due to loosening between the yarn bobbin and the weaving machine after it is led out of the yarn bobbin; To solve the above problems, the present invention adopts the following technical solution: This utility model is a yarn anti-twisting control device during yarn unwinding, including a housing. The housing has a yarn inlet hole and a yarn outlet hole respectively provided on opposite side walls. At least two yarn guide shafts are provided inside the housing. The yarn wound on the yarn bobbin passes through the yarn inlet hole and the yarn guide shaft and is led out from the yarn outlet hole. The gravity plate is hung on the yarn located between two adjacent yarn guide shafts to tension the yarn led out from the yarn bobbin between the two adjacent yarn guide shafts.

[0005] Furthermore, the yarn guide shaft is at the same height as the yarn inlet and yarn outlet within the housing.

[0006] Furthermore, the gravity plate has a long strip structure, and a groove is provided at the bottom of the shell, with the bottom part of the gravity plate passing through the groove and located outside the shell.

[0007] Furthermore, a mounting bracket for fixing the housing is provided on one side of the housing.

[0008] Furthermore, the gravity plate has a hanging hole at its end inside the housing for the yarn to pass through.

[0009] Furthermore, an anti-collapse disc is provided at the end of the yarn bobbin, the diameter of which is larger than the diameter of the yarn bobbin, and the yarn wound on the yarn bobbin is axially unwound through the anti-collapse disc.

[0010] This utility model also discloses a device for a safety belt loom, which includes the yarn anti-twisting control device disclosed above during yarn unwinding.

[0011] The beneficial effects of this utility model are as follows: This utility model is a yarn anti-twisting control device during yarn unwinding and a device for use in a safety belt loom. By setting this device between the yarn bobbin and the loom, when the yarn is unwinding and in a loose state, the gravity plate can use gravity to lower and tighten the yarn on the guide shaft. At this time, the yarn 4 is V-shaped and tightened on the guide shaft. In this way, the yarn outside the shell can avoid the formation of a self-twisting structure due to loosening, effectively eliminating the phenomenon of self-twisting and knotting when the yarn is unwound from the yarn bobbin, eliminating the resulting yarn breakage and weaving defects, and improving the quality of woven products. In addition, compared with the unwinding yarn frame, it improves the efficiency of yarn bobbin changing. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is a schematic diagram of a traditional structure; Figure 2 This is a diagram showing the fit between the yarn bobbin and this device; Figure 3 This is a schematic diagram of the internal structure of this device; In the diagram: 1-yarn tube, 2-anti-collapse disc, 3-shell, 31-yarn outlet hole, 32-yarn guide shaft, 33-yarn inlet hole, 34-groove, 4-yarn, 5-self-twisting structure, 6-gravity plate, 61-hanging hole, 7-mounting bracket. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0015] See Figure 2-3 This embodiment is a yarn anti-twisting control device during yarn unwinding, including a housing 3. The left side wall of the housing 3 has a yarn inlet hole 33, and the right side wall of the housing 3 has a yarn outlet hole 31. Three yarn guide shafts 32 are fixed inside the housing 3 and are at the same height. The yarn 4 wound on the yarn bobbin 1 passes through the yarn inlet hole 33 and the yarn guide shafts 32 and is led out through the yarn outlet hole 31. The gravity plate 6 is hung on the yarn 4 located between two adjacent yarn guide shafts 32, which tensions the yarn 4 led out from the yarn bobbin 1 in a V-shape between the two adjacent yarn guide shafts 32. In this embodiment, by setting this device between the yarn bobbin 1 and the weaving machine, when the yarn 4 is untied after being led out, the gravity plate 6 can use gravity to lower the yarn 4 and tighten it on the yarn guide shaft 32. At this time, the yarn 4 is V-shaped and tightened on the yarn guide shaft 32. In this way, the yarn outside the housing 3 can avoid the occurrence of self-twisting structure 5 due to loosening. In other words, the gravity plate 6 is used to compensate for the occurrence of self-twisting and knotting of the yarn due to over-twisting.

[0016] In some possible embodiments, the yarn guide shaft 32 is at the same height as the yarn inlet hole 33 and the yarn outlet hole 31 within the housing 3; The yarn inlet hole 33 and the yarn outlet hole 31 are equipped with ceramic sheaths to prevent contact and wear with the yarn 4. A gravity plate 6 can be added between the sheath and the yarn guide shaft 32 to improve the tension of the yarn 4.

[0017] In some possible embodiments, the gravity plate 6 is a long strip structure, and the bottom of the housing 3 is provided with a groove 34, with the bottom part of the gravity plate 6 passing through the groove 34 and located outside the housing 3; In this embodiment, the groove 34 serves as a guide, so that the gravity sheet 6 can only move vertically without wobbling, thus ensuring that the yarn 4 is stably tensioned between the yarn guide shafts 32.

[0018] In some possible embodiments, a mounting bracket 7 for fixing the housing 3 is provided on the outer side of the housing 3; In this embodiment, the housing 3 can be fixed by setting the mounting bracket 7.

[0019] In some possible embodiments, the gravity plate 6 is provided with a hanging hole 61 for the yarn 4 to pass through at its end inside the housing 3; In this embodiment, a hanging hole 61 is provided on the gravity sheet 6, through which the gravity sheet 6 can be hung on the yarn 4.

[0020] In some possible embodiments, the end of the yarn tube 1 is provided with an anti-collapse disc 2, the diameter of the anti-collapse disc 2 is larger than the diameter of the yarn tube 1, and the yarn 4 wound on the yarn tube 1 is axially unwound through the anti-collapse disc 2. In this embodiment, the yarn 4 is wound in a stacked manner on the yarn bobbin 1. When the yarn 4 is axially led out from the yarn bobbin 1, the stacked yarn 4 will collapse, causing a large amount of yarn 4 to detach from the yarn bobbin 1. This part of the yarn cannot be tensioned by this device. Therefore, by setting an anti-collapse disc 2, the inner side of the anti-collapse disc 2 is provided with dense filaments. The anti-collapse disc 2 is set at the end of the yarn bobbin 1. The dense filaments contact the yarn 4 to prevent the loose filaments on the surface of the yarn 4 from collapsing axially towards the yarn bobbin 1.

[0021] In addition, the safety belt weaving process includes a yarn anti-twisting control device during yarn release. By adding the yarn anti-twisting control device during the weaving process of the safety belt, it is ensured that the yarn 4 will not twist during the weaving process.

[0022] Working principle: Yarn 4 is axially unwound from yarn bobbin 1, passes through anti-collapse disc 2 and enters the device. The weaving machine pulls yarn 4 at a uniform speed. Yarn 4 has a certain tension. Gravity plate 6 in the device tensions the yarn on guide shaft 32. When yarn 4 occasionally becomes excessively loose, it causes a sudden yarn feeding, and the tension of yarn 4 suddenly decreases. The gravity plate 6 in this device moves downward to tighten yarn 4, and the yarn 4 at the yarn outlet 31 of the housing 3 is tightened to avoid self-twisting, while compensating for the tension of yarn 4.

[0023] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A yarn anti-twisting control device during yarn unwinding, characterized in that, Includes a housing (3), on which yarn inlet hole (33) and yarn outlet hole (31) are respectively provided on opposite side walls. At least two yarn guide shafts (32) are provided inside the housing (3). Yarn (4) passes through the yarn inlet hole (33) and the yarn guide shaft (32) and is led out from the yarn outlet hole (31). A gravity plate (6) is hung on the yarn (4) located between two adjacent yarn guide shafts (32) to tension the yarn (4) drawn from the yarn bobbin (1) between the two adjacent yarn guide shafts (32).

2. The yarn anti-twisting control device during yarn unwinding according to claim 1, characterized in that, The yarn guide shaft (32) is at the same height as the yarn inlet hole (33) and the yarn outlet hole (31) within the housing (3).

3. The yarn anti-twisting control device during yarn unwinding according to claim 1, characterized in that, The gravity plate (6) is a long strip structure, and a groove (34) is provided at the bottom of the shell (3). The bottom part of the gravity plate (6) passes through the groove (34) and is located outside the shell (3).

4. The yarn anti-twisting control device during yarn unwinding according to claim 1, characterized in that, A mounting bracket (7) for fixing the housing (3) is provided on the outer side of the housing (3).

5. The yarn anti-twisting control device during yarn unwinding according to claim 1, characterized in that, The gravity plate (6) has a hanging hole (61) at its end inside the housing (3) for the yarn (4) to pass through.

6. The yarn anti-twisting control device during yarn unwinding according to claim 1, characterized in that, The end of the yarn tube (1) is provided with an anti-collapse disc (2), the diameter of which is larger than the diameter of the yarn tube (1), and the yarn (4) wrapped on the yarn tube (1) is axially led out through the anti-collapse disc (2).

7. An apparatus for a seatbelt weaving machine, characterized in that, Includes the yarn anti-twisting control device during yarn release as described in any one of claims 1-6.

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