Rotary selvedge twisting device and weaving machine

Abstract

The utility model provides a rotary leno selvedge device and loom, the rotary leno selvedge device comprises a central shaft, a driving device, leno selvedge barrels and a yarn guide hook, the central shaft is fixed on the driving device, the leno selvedge barrels are fixedly sleeved on the central shaft, the leno 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 selvedge yarn opening movement is completed through rotating movement, so that twisting is avoided.

Description

Technical Field

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

[0002] There are two main types of rotary hem devices on existing looms: (1) a planetary gear mechanism driven by a belt or motor. This mechanism has a complex structure, a relatively long transmission chain, and an open planetary gear system, making lubrication difficult. (2) Direct motor drive. This is smaller in size and simpler in transmission. However, because the motor rotates unidirectionally, the hem yarn is twisted, so the motor needs to be reversed periodically to release the twist, and this cycle is repeated. This places high demands on the motor to run at high speed. At the same time, the reversed weft causes the edge of the cloth to warp in the opposite direction.

[0003] Therefore, it is necessary to provide a new technical solution. Utility Model Content

[0004] In order to solve the technical problems existing in the prior art, the utility model discloses a rotary selvedge device and a loom, and the specific technical solutions are as follows:

[0005] On the one hand, the utility model provides a rotary selvedge device, which includes a central shaft, a driving device, a selvedge cylinder and a yarn guide hook.

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

[0007] The selvage drum is fixedly sleeved on the central shaft, and the selvage drums 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 drums passes through one end of the yarn guide hook and is fixed, and the yarn led out from the other selvedge drum 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 portion of the second rod portion is tilted outward and bent upward along the axial direction of the central axis.

[0011] Further, an end of the first rod part is provided with a first through hole, and an end of the second rod part is provided with a second through hole, which is directed towards and close to the central hole at one end of the central shaft.

[0012] Further, a first tensioner and a yarn guide sheet are further included, the first tensioner is fixedly connected to one end of the central shaft, and the yarn guide sheet is fixedly connected to the other end of the central shaft.

[0013] The edge twisting cylinder comprises a first edge twisting cylinder and a second edge twisting cylinder, and the first tensioner is located between the yarn guide hook and the first edge twisting cylinder.

[0014] The first tensioner is adjacent to the first rod part and is consistent with the length direction of the first rod part, and the yarn guide sheet is consistent with the length direction of the second rod part.

[0015] Further, a second tensioner is further included, which is vertically connected to the yarn guide sheet and close to the central hole at the other end of the central shaft.

[0016] Further, the driving device is a motor, and the direction in which the motor drives the central shaft to rotate is unchanged.

[0017] Further, a yarn blocking rod is further included, which is located outside the yarn guide hook, and the yarn blocking rod surrounds an elongated space, and the length direction of the elongated space is vertically arranged, and the yarn drawn from the first edge twisting cylinder and the yarn drawn from the second edge twisting cylinder both pass through the elongated space.

[0018] Further, a support is further included, and the driving device and the yarn blocking rod are both fixed to the support.

[0019] On the other hand, the utility model also provides a weaving machine which comprises the rotating edge twisting device.

[0020] Further, the utility model also comprises a cloth guide roller, a cloth winding roller and a reed, and the cloth guide roller, the cloth winding roller, the reed and the rotating edge twisting device are sequentially arranged.

[0021] The yarns drawn from the two edge twisting cylinders are interwoven to form a fabric, which is guided by the cloth guide roller and wound on the cloth winding roller of the weaving machine.

[0022] The yarn drawn from one of the edge twisting cylinders sequentially passes through one end of the yarn guide hook and the reed, and the yarn drawn from the other edge twisting cylinder sequentially passes through the hollow shaft cavity, the other end of the yarn guide hook and the reed to form a shed, and the weft passes through the shed, when the yarn guide hook rotates by 180 degrees, the edge twisting yarns exchange positions up and down, hold the weft, form a fabric, and the fabric is wound on the cloth winding roller through the cloth guide roller.

[0023] The utility model has the following beneficial effects:

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

[0025] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or 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 following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

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

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

[0029] Among them, 1-driving device, 2-first hank drum, 3-second hank drum, 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 yarn, 11-second hank yarn, 12-center axis, 121-center hole, 13-reed, 14-weft yarn, 15-fabric, 16-cloth guide roller, 17-cloth winding roller, 18-shed DETAILED DESCRIPTION

[0030] The following describes in detail embodiments of the present invention, 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 explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In the description of this utility model, "plurality" means two or more, unless otherwise expressly and specifically defined.

[0032] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, the connection may be fixed, detachable, or integrated; it may be mechanical or electrical; it may be directly connected or indirectly connected through an intermediate medium; it may refer to internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

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

[0034] like Figure 1 As shown, the rotary selvedge device of the present invention includes a central shaft 12, a driving device 1, a selvedge 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. Both ends of the central shaft 12 have central holes 121 . The hollow shaft cavity is connected to the central holes 121 .

[0036] The central shaft 12 is fixed on the driving device 1 and extends from the left and right sides of the driving device 1. The selvedge drum is fixedly sleeved on the central shaft 12. The selvedge drums 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 the 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 drum 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 drum rotate synchronously with the central shaft 12 .

[0038] like Figure 1 and Figure 2As shown, the yarn led out from one of the selvedge drums passes through one end of the yarn guide hook, and the yarn led out from the other selvedge drum passes through the hollow shaft cavity and the other end of the yarn guide hook in sequence. The two yarns are interwoven with the weft yarn to form a fabric. 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 180 degrees, the two yarns form an opening.

[0039] The utility model is that the yarn drawn out from the selvedge drum is 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 together 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 yarn to pass through, and the end of the second rod portion 52 is provided with a second through-hole 521 for yarn to pass through. 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 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, making it easier for the yarn passing through the central axis cavity to pass through the second through-hole 521; on the other hand, the interweaving 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 can pass through the shed.

[0041] The first tensioner 4 is fixedly connected to one end of the central shaft 12, and the yarn guide 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 6 is consistent with the length direction of the second rod 52, so that the yarn tensioned by the tensioner can be smoothly transferred 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 central axis. The selvedge drum includes a first selvedge drum 2 and a second selvedge drum 3, and the first tensioner 4 is located between the yarn guide hook 5 and the first selvedge drum 2. The present invention can better control the yarn drawn out of the second selvedge drum 3 through the second tensioner 7, so that the yarn drawn out of the second selvedge drum 3 can smoothly transition into the central 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, which makes the yarn transmission path more reasonable and avoids yarn twisting.

[0043] Please continue reading Figure 1 The rotary hem device also includes a yarn stop rod 8, which is located on the outside of the yarn guide hook 5. The yarn stop rod 8 surrounds a long strip space 81, and the length direction of the long strip space is vertically arranged. The yarn drawn out from the first hem drum 2 and the yarn drawn out from the second hem drum 3 both pass through the long strip space 81. When the yarn of the first hem drum 2 and the yarn of the second hem drum 3 form an opening, the yarn of the first hem drum and the yarn of the second hem drum are arranged up and down in the long strip space. The yarn stop rod 8 of the utility model limits the hem yarn to open and close only in the vertical direction during rotation, and the hem yarn remains within the range of the long strip space of the yarn stop rod in the horizontal direction.

[0044] The rotary leno 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 utility model also 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 drum 2 is recorded as the first selvedge yarn 10, and the yarn drawn out from the second selvedge drum 3 is recorded as the second selvedge yarn 11. The first selvedge yarn 10, which has passed through the first tensioner 4, the first perforation 511 and the reed 13 in sequence, and the first selvedge yarn 11, which has passed through the yarn guide piece 6, the second tensioner 7, the central axis cavity, the second perforation 521 and the reed 13 in sequence, form a shed 18. The shed 18 is consistent with the weft insertion shed formed by the warp yarn. 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 wrapped around the fabric. 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 rotating edge twisting device drives a motor, but does not need to change the direction, and drives the edge twisting cylinder while completing the edge twisting yarn opening movement, thereby avoiding twisting.

[0049] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms is not necessarily directed to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present specification.

[0050] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can change, modify and modify the above embodiments within the scope of the present application.

Claims

1. A rotary hemming device, characterized in that: It includes a central shaft (12), a driving device (1), a hank drum and a yarn guide hook (5). The central shaft (12) is fixed on the driving device (1). The selvage barrel is fixedly sleeved on the central shaft (12), and the selvage barrels are 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 drums passes through one end of the yarn guide hook and is fixed, and the yarn led out from the other selvedge drum 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 lemming 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 tilted outward and bent upward along the axial direction of the central axis.

3. The rotary lemming 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), and the second through hole (521) is close to and faces the central hole at one end of the central axis.

4. The rotary lemming device according to claim 2, characterized in that: It also includes a first tensioner (4) and a yarn guide (6), wherein the first tensioner (4) is fixedly connected to one end of the central shaft, and the yarn guide (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 lemming 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 lemming 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 lemming device according to claim 1, characterized in that: The invention also includes a yarn blocking rod (8), which is located outside the yarn guide hook (5). The yarn blocking rod (8) encloses a long strip space (81). The length direction of the long strip space is vertically arranged, and the yarn drawn out from the first selvedge barrel and the yarn drawn out from the second selvedge barrel both pass through the long strip space.

8. The rotary lemming 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 cloth guide roller (16) and wound on a cloth 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, holding the weft yarn (14) to form a fabric (15). The fabric (15) is wound on the cloth winding roller (17) through the cloth guide roller (16).

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