Rotary selvedge twisting device and weaving machine

Abstract

The invention provides a rotary selvedge device and a weaving machine, the rotary selvedge device comprises a central shaft, a driving device, selvedge barrels and a yarn guide hook, the central shaft is fixed on the driving device, the selvedge barrels are fixedly sleeved on the central shaft, the selvedge barrels are respectively located on two sides of a motor, and the motor is fixed on the central shaft. The yarn guide hook is fixedly connected to one end of the center shaft, the center shaft is provided with a hollow shaft cavity, center holes are formed in the two ends of the center shaft, and the hollow shaft cavity is communicated with the center holes. The motor is adopted for driving, the direction does not need to be changed, and a selvedge bobbin is driven while the selvedge yarn opening motion is completed through rotating motion, so that twisting is avoided.

Description

Technical Field

[0001] The invention relates to the field of looms, and in particular to a rotary hemming device and a loom. Background Art

[0002] There are two main types of rotary hemming devices on existing looms: (1) planetary gear mechanisms driven by belts or motors. This mechanism has a complex structure, a relatively long transmission chain, and an open planetary gear system, which is difficult to lubricate. (2) Direct motor drive. This is smaller in size and simpler in transmission. However, because the motor rotates unidirectionally, the hemming yarn is twisted, so the motor needs to reverse periodically to release the twist, and this cycle is repeated. High requirements are placed on high-speed motors. At the same time, the reversed weft causes the edge of the cloth to curl in the opposite direction.

[0003] Therefore, it is necessary to provide a new technical solution. Summary of the invention

[0004] In order to solve the technical problems existing in the prior art, the present invention discloses a rotary selvedge device and a loom, and the specific technical scheme is as follows:

[0005] In one aspect, the present invention provides a rotary lench device, which comprises a central shaft, a driving device, a lench cylinder and a yarn guide hook.

[0006] The central shaft is fixed on the driving device.

[0007] The selvedge barrel is fixedly sleeved on the central shaft, the selvedge barrels are respectively located on both sides of the driving device, and the yarn guide hook is fixedly connected to one end of the central shaft.

[0008] The central shaft has a hollow shaft cavity, and both ends of the central shaft have central holes, and the hollow shaft cavity is connected to the central hole.

[0009] The yarn led out from one of the selvedge cylinders passes through one end of the yarn guide hook and is fixed, and the yarn led out from the other selvedge cylinder passes through the hollow shaft cavity and the other end of the yarn guide hook in sequence and is fixed. The driving device drives the central shaft to rotate, and the central shaft drives the yarn guide hook to rotate. The two ends of the yarn guide hook drive the two yarns to rotate. Every time the yarn guide hook rotates one circle, the two yarns form an opening.

[0010] Furthermore, the yarn guide hook includes a first rod portion and a second rod portion. Along the radial direction of the central axis, the first rod portion is vertically connected to the upper side of the central axis, and the second rod portion is connected to the lower side of the central axis away from the first rod portion. The end of the second rod portion is inclined outward and bent upward along the axial direction of the central axis.

[0011] Further, a first through hole is disposed at the end of the first rod portion, and a second through hole is disposed at the end of the second rod portion, and the second through hole faces and is close to the central hole at one end of the central axis.

[0012] Furthermore, it also includes a first tensioner and a yarn guide, wherein the first tensioner is fixedly connected to one end of the central shaft, and the yarn guide is fixedly connected to the other end of the central shaft.

[0013] The selvedge barrel comprises a first selvedge barrel and a second selvedge barrel, and the first tensioner is located between the yarn guide hook and the first selvedge barrel;

[0014] The first tensioner is adjacent to the first rod portion and has the same length direction, and the yarn guide piece is consistent with the second rod portion in length direction.

[0015] Furthermore, it also includes a second tensioner, which is vertically connected to the yarn guide plate and is close to the center hole at the other end of the central axis.

[0016] Furthermore, the driving device is a motor, and the direction in which the central axis is driven to rotate by the motor remains unchanged.

[0017] Furthermore, it also includes a yarn blocking rod, which is located on the outside of the yarn guide hook and surrounds a long strip space. The length direction of the long strip space is vertically arranged, and the yarn led out from the first side twisting tube and the yarn led out from the second side twisting tube both pass through the long strip space.

[0018] Furthermore, it also comprises a bracket, and the driving device and the yarn blocking rod are both fixed on the bracket.

[0019] On the other hand, the present invention further provides a loom, which comprises the above-mentioned rotary leno device.

[0020] Furthermore, it also includes a cloth guide roller, a cloth winding roller and a reed, wherein the cloth winding roller, the cloth guide roller, the reed and the rotary hemming device are arranged in sequence.

[0021] The yarns drawn out from the two leno drums are interwoven to form a fabric which is guided by the cloth guide roller and wound on the cloth winding roller of the loom.

[0022] The yarn led out from one of the selvedge drums passes through one end of the yarn guide hook and the reed in turn, and then the yarn led out from the other selvedge drum passes through the hollow shaft cavity, the other end of the yarn guide hook and the reed in turn to form a shed. The weft yarn passes through the shed. When the yarn guide hook rotates 180 degrees, the selvedge yarn exchanges positions up and down, holding the weft yarn to form a fabric, and the fabric is wound on the cloth winding roller through the cloth guide roller.

[0023] The present invention has the following beneficial effects:

[0024] The rotary hemming device of the present invention is driven by a motor but does not need to change direction. The rotary motion completes the opening movement of the hemming yarn and drives the hemming bobbin to avoid twisting.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a structural schematic diagram of the rotary hemming device of the present invention;

[0028] Figure 2 It is a partial structural schematic diagram of the loom of the present invention.

[0029] Among them, 1-driving device, 2-first hank edge cylinder, 3-second hank edge cylinder, 4-first tensioner, 5-yarn guide hook, 51-first rod, 511-first perforation, 52-second rod, 521-second perforation, 6-yarn guide plate, 7-second tensioner, 8-yarn stop rod, 81-long strip space, 9-bracket, 10-first hank edge yarn, 11-second hank edge yarn, 12-center axis, 121-center hole, 13-steel reed, 14-weft yarn, 15-fabric, 16-cloth guide roller, 17-cloth winding roller, 18-shed mouth DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In the description of the present invention, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, fixed connection, detachable connection, or integrated; mechanical connection, or electrical connection; direct connection, or indirect connection through an intermediate medium, or internal connection between two elements or interaction between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] See also Figure 1 and Figure 2 , Figure 1 It is a structural schematic diagram of the rotary hemming device of the present invention; Figure 2 It is a schematic diagram of the partial structure of the loom of the present invention.

[0034] like Figure 1 As shown, the rotary hemming device of the present invention includes a central shaft 12, a driving device 1, a hemming cylinder, a yarn guide hook 5, a first tensioner 4, a yarn guide plate 6, a second tensioner 7, a bracket 9 and a yarn stop rod 8.

[0035] The central shaft 12 has a hollow shaft cavity, and two ends of the central shaft 12 have central holes 121 , and the hollow shaft cavity is connected to the central hole 121 .

[0036] The central axis 12 is fixed on the driving device 1 and extends from the left and right sides of the driving device 1. The selvedge cylinder is fixedly sleeved on the central axis 12. The selvedge cylinders are respectively located on both sides of the driving device 1. The driving device 1 is a motor. The motor rotates synchronously with the loom through a control system, and the motor rotation does not require a rotation direction. The rotational motion completes the opening movement of the selvedge yarn while driving the selvedge cylinder to avoid twisting.

[0037] The yarn guide hook 5 is fixedly connected to one end of the central shaft 12 , and the yarn guide hook 5 and the selvedge barrel rotate synchronously with the central shaft 12 .

[0038] like Figure 1 and Figure 2 As shown, the yarn led out from one of the selvedge cylinders passes through one end of the yarn guide hook, and the yarn led out from the other selvedge cylinder passes through the hollow shaft cavity and the other end of the yarn guide hook in turn, and the two yarns are interwoven with the weft yarn to form a fabric. The driving device drives the central axis to rotate, and the central axis drives the yarn guide hook to rotate. The two ends of the yarn guide hook drive the two yarns to rotate, and the two yarns form an opening every time the yarn guide hook rotates 180 degrees.

[0039] The yarns drawn out from the selvedge drum of the present invention are wound on the cloth winding roller through the cloth guide roller, and the two yarns are located on one side of the warp yarn and are consistent with the length direction of the warp yarn. The two yarns move up and down with the warp yarn and are driven to rotate by the yarn guide hook at the same time. Every time the yarn guide hook rotates 180 degrees, the two yarns form an opening, and the opening is consistent with the weft yarn shed formed by the warp yarn.

[0040] The yarn guide hook 5 includes a first rod portion 51 and a second rod portion 5251. The end of the first rod portion is provided with a first through hole 511 for the yarn to pass through, and the end of the second rod portion 52 is provided with a second through hole 521 for the yarn to pass through, and the second through hole 521 faces and is close to the center hole 121 at one end of the central axis. Along the radial direction of the central axis, the first rod portion 51 is vertically connected to the upper side of the central axis 12, and the second rod portion 52 is connected to the lower side of the central axis 12 away from the first rod portion 51. The end of the second rod portion 52 is tilted outward and bent upward along the axial direction of the central axis. On the one hand, the end of the second rod portion 52 is close to the center hole at one end of the central axis 12, so that the yarn passing through the central axis cavity can easily pass through the second through hole 521; on the other hand, the interlaced opening formed by the yarn passing through the first through hole 511 and the yarn passing through the second through hole 521 is consistent with the weft shed formed by the warp yarn of the loom, so that the weft yarn 14 passes through the shed.

[0041] The first tensioner 4 is fixedly connected to one end of the central shaft 12, and the yarn guide piece 6 is fixedly connected to the other end of the central shaft 12. The first tensioner 4 is adjacent to the first rod 51 and has the same length direction, and the yarn guide piece 6 is consistent with the length direction of the second rod 52, so that the yarn tensioned by the tensioner can be smoothly transmitted to the yarn guide hook to avoid twisting.

[0042] The second tensioner 7 is vertically connected to the yarn guide plate, and the second tensioner is close to the center hole 121 at the other end of the center axis. The selvedge tube includes a first selvedge tube 2 and a second selvedge tube 3, and the first tensioner 4 is located between the yarn guide hook 5 and the first selvedge tube 2. The present invention can better control the yarn led out of the second selvedge tube 3 through the second tensioner 7, so that the yarn led out of the second selvedge tube 3 can smoothly transition into the center axis cavity. In addition, the length directions of the first tensioner, the yarn guide plate and the second tensioner in the present invention are basically consistent, so that the yarn transmission path is more reasonable and the yarn twisting is avoided.

[0043] Please continue reading Figure 1The rotary hemming device also includes a yarn stopper rod 8, which is located on the outside of the yarn guide hook 5. The yarn stopper rod 8 surrounds a long strip space 81, and the length direction of the long strip space is vertically arranged. The yarn drawn from the first hemming tube 2 and the yarn drawn from the second hemming tube 3 both pass through the long strip space 81. When the yarn of the first hemming tube 2 and the yarn of the second hemming tube 3 form an opening, the yarn of the first hemming tube and the yarn of the second hemming tube are arranged up and down in the long strip space. The yarn stopper rod 8 of the present invention limits the hemming yarn to open and close only in the vertical direction when rotating, and the hemming yarn is kept within the range of the long strip space of the yarn stopper rod in the horizontal direction.

[0044] The rotary lemming device further comprises a bracket 9 , and the driving device 1 and the yarn blocking rod 8 are both fixed on the bracket 9 .

[0045] See also Figure 2 ,like Figure 2 As shown, the present invention further provides a loom, which includes a cloth winding roller 17, a cloth guide roller 16, a reed 13 and the above-mentioned rotary hemming device, wherein the cloth winding roller 17, the cloth guide roller 16, the reed 13 and the rotary hemming device are arranged in sequence.

[0046] The yarn drawn out from the first selvedge tube 2 is recorded as the first selvedge yarn 10, and the yarn drawn out from the second selvedge tube 3 is recorded as the second selvedge yarn 11. The first selvedge yarn 10 after passing through the first tensioner 4, the first perforation 511 and the reed 13 in sequence and the first selvedge yarn 11 after passing through the yarn guide plate 6, the second tensioner 7, the central axis cavity, the second perforation 521 and the reed 13 in sequence form a shed 18, and the shed 18 is consistent with the weft insertion shed formed by the warp yarn, and the weft yarn 14 passes through the shed 18. When the yarn guide hook 5 drives the first selvedge yarn 10 and the second selvedge yarn 11 to rotate, the yarn guide hook 5 rotates 180 degrees, and the first selvedge yarn 10 and the second selvedge yarn 11 exchange positions up and down, holding the weft yarn 14 to form a fabric. 15. At this time, a new shed is formed between the first selvedge yarn 10 and the second selvedge yarn 11 and the reed, and the weft yarn 14 passes through the new shed from the other side of the fabric. The yarn guide hook 5 rotates another 180 degrees, and the first selvedge yarn 10 and the second selvedge yarn 11 exchange positions up and down to hold the weft yarn to form a fabric. Then the yarn guide hook rotates another 180 degrees to form a new shed, and introduces a new weft yarn. The cycle continues in sequence to form a fabric 15 with two selvedge yarns and one weft yarn winding structure. The fabric 15 is wound around the cloth roller 17 through the cloth guide roller 16.

[0047] Furthermore, there are two rotary hemming devices, which are symmetrically arranged at both ends of the cloth guide roller.

[0048] The rotary hemming device of the present invention is driven by a motor but does not need to change direction. The rotary motion completes the opening movement of the hemming yarn and drives the hemming tube to avoid twisting.

[0049] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0050] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify and vary the above embodiments within the scope of the present invention.

Claims

1. A rotary hemming device, characterized in that: It comprises a central shaft (12), a driving device (1), a hank barrel and a yarn guide hook (5). The central shaft (12) is fixed on the driving device (1). The selvedge barrel is fixedly sleeved on the central shaft (12), and the selvedge barrel is respectively located on both sides of the driving device. The yarn guide hook (5) is fixedly connected to one end of the central shaft. The central shaft (12) has a hollow shaft cavity, and both ends of the central shaft have central holes, and the hollow shaft cavity is connected to the central hole. The yarn led out from one of the selvedge cylinders passes through one end of the yarn guide hook and is fixed, and the yarn led out from the other selvedge cylinder passes through the hollow shaft cavity and the other end of the yarn guide hook in sequence and is fixed. The driving device drives the central shaft to rotate, and the central shaft drives the yarn guide hook to rotate. The two ends of the yarn guide hook drive the two yarns to rotate. Every time the yarn guide hook rotates one circle, the two yarns form an opening.

2. The rotary hemming device according to claim 1, characterized in that: The yarn guide hook (5) comprises a first rod portion (51) and a second rod portion (52). Along the radial direction of the central axis, the first rod portion (51) is vertically connected to the upper side of the central axis, and the second rod portion (52) is connected to the lower side of the central axis away from the first rod portion (51). The end of the second rod portion (52) is inclined outward and bent upward along the axial direction of the central axis.

3. The rotary hemming device according to claim 2, characterized in that: The end of the first rod portion (51) is provided with a first through hole (511), and the end of the second rod portion (52) is provided with a second through hole (521), wherein the second through hole (521) is close to and faces the central hole at one end of the central axis.

4. The rotary hemming device according to claim 2, characterized in that: It also includes a first tensioner (4) and a yarn guide plate (6), wherein the first tensioner (4) is fixedly connected to one end of the central shaft, and the yarn guide plate (6) is fixedly connected to the other end of the central shaft. The selvedge barrel comprises a first selvedge barrel (2) and a second selvedge barrel (3), and the first tensioner (4) is located between the yarn guide hook (5) and the first selvedge barrel (2); The first tensioner (4) is adjacent to the first rod portion (51) and has the same length direction, and the yarn guide piece (6) has the same length direction as the second rod portion (52).

5. The rotary hemming device according to claim 4, characterized in that: It also includes a second tensioner (7), which is vertically connected to the yarn guide plate (6) and is close to the center hole at the other end of the central axis.

6. The rotary hemming device according to claim 1, characterized in that: The driving device (1) is a motor, and the direction in which the central shaft is driven to rotate by the motor remains unchanged.

7. The rotary hemming device according to claim 1, characterized in that: It also includes a yarn blocking rod (8), which is located outside the yarn guide hook (5). The yarn blocking rod (8) surrounds a long strip space (81). The length direction of the long strip space is vertically arranged, and the yarn drawn out from the first side twisting tube and the yarn drawn out from the second side twisting tube both pass through the long strip space.

8. The rotary hemming device according to claim 7, characterized in that: It also comprises a bracket (9), on which the driving device and the yarn blocking rod are both fixed.

9. A loom, characterized in that: It comprises the rotary hemming device according to any one of claims 1 to 8.

10. The loom according to claim 9, characterized in that It also includes a cloth winding roller (17), a cloth guide roller (16) and a reed (13), wherein the cloth winding roller (17), the cloth guide roller (16), the reed (13) and the rotary hemming device are arranged in sequence. The yarns drawn out from the two selvedge drums are interwoven to form a fabric (15) which is guided by a fabric guide roller (16) and wound on a fabric winding roller (17) of the loom. The yarn drawn out from one of the selvedge drums passes through one end of the yarn guide hook and the reed in sequence, and then the yarn drawn out from the other selvedge drum passes through the hollow shaft cavity, the other end of the yarn guide hook and the reed in sequence to form a shed (18). The weft yarn (14) passes through the shed (18). When the yarn guide hook rotates 180 degrees, the two selvedge yarns exchange positions up and down, hold the weft yarn (14), and form a fabric (15). The fabric (15) is wound on a cloth winding roller (17) through a cloth guide roller (16).

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