Loom and yarn doubling device thereof

Abstract

The utility model discloses a weaving machine and a yarn doubling device thereof and belongs to the technical field of spinning. Comprising a fixing support, a yarn tension mechanism, a broken yarn detection rod and a detection assembly, a first yarn guide hole is formed in the fixing support, the yarn tension mechanism is fixed to the fixing support, and after yarn passes through the yarn tension mechanism, the yarn has tension; the broken yarn detection rod is rotationally connected with the fixed support, and a second yarn guide hole is formed in the broken yarn detection rod; the detection assembly is used for detecting the position change of the broken yarn detection rod. The yarn tension mechanism controls the yarn to have stable tension, so that it is ensured that the broken yarn detection rod is in a basically stable posture, when yarn breakage occurs, the broken yarn detection rod can be separated from the original posture, and whether yarn breakage occurs or not can be detected by detecting the position change of the broken yarn detection rod through the detection assembly. When the yarn does not participate in weaving, the yarn is not mistakenly detected as broken yarn, the yarn doubling device can directly combine the yarn on a weaving machine, the production cost is reduced, and the product quality is improved.

Description

TECHNICAL FIELD

[0001] A loom and a yarn doubling device thereof belong to the technical field of textiles. BACKGROUND

[0002] When two or more yarns are woven in a non-equal proportion, not all the yarns participate in continuous weaving, and the yarns will be mis-detected during the yarn suspension process, causing the machine to stop, so it is necessary to first use a doubling device to combine different yarns into one, and then use a loom for weaving, such as CN222512687U discloses a doubling device, which realizes rapid pre-winding and precise tension control of the yarn, and solves the instability problem caused by manual operation, but the doubling device directly increases the weaving cost and reduces the production efficiency, and the doubling device will cause damage to the yarn during the process of doubling and winding the yarn.

[0003] CN101413179A discloses a new type of doubling device and method, a through hole is provided in the center shaft of the motor, a support is arranged at the top end and embedded with a hollow porcelain bead, and the raw silk is sequentially threaded through the through hole and the porcelain bead; the motor is started to make the support eccentrically rotate to realize the doubling of the silk thread. The structure is simple, no external doubling equipment is needed, and it can be directly integrated on the knitting machine, saving the special doubling machine and the intermediate storage link. However, the doubling device still needs to combine the yarns into one, and cannot detect the broken yarn condition. CONTENT OF THE UTILITY MODEL

[0004] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art, provide a loom and a yarn doubling device thereof, which can detect whether a yarn is broken in real time, combine the yarns directly on the loom, reduce production cost, and improve product quality.

[0005] The utility model adopts the technical scheme that the loom yarn doubling device comprises:

[0006] A fixed support is provided with a first yarn guide hole;

[0007] A yarn tension mechanism is fixed on the fixed support or arranged on the yarn feeding side of the fixed support, and the yarn has a tension after passing through the yarn tension mechanism;

[0008] A broken yarn detection rod is rotatably connected with the fixed support, and a second yarn guide hole is arranged on the broken yarn detection rod;

[0009] A detection assembly is arranged on one side of the broken yarn detection rod and used for detecting the position change of the broken yarn detection rod.

[0010] Preferably, the fixing support is provided with at least two first guide holes, and at least two broken yarn detection rods are arranged side by side on the fixing support, and at least two yarn tension mechanisms are fixed on the fixing support and arranged between the first guide holes and the broken yarn detection rods.

[0011] Preferably, the yarn tension mechanism comprises a first tension piece and a second tension piece, and the first tension piece and the second tension piece clamp the yarn.

[0012] Preferably, the yarn tension mechanism further comprises a tension adjusting mechanism connected to the first tension piece and the second tension piece, and the tension adjusting mechanism adjusts the relative distance or the relative angle of the first tension piece and the second tension piece.

[0013] Preferably, the fixing support is provided with a tension adjusting support, and the tension adjusting mechanism is fixed on the tension adjusting support, the yarn passes through the first guide hole, then passes through the first tension piece and the second tension piece, and then passes through the second guide hole.

[0014] Preferably, the tension adjusting mechanism comprises an adjusting seat, a worm, a first worm wheel and a second worm wheel arranged in the adjusting seat, the worm has two sections of helical teeth with opposite directions, the first worm wheel and the second worm wheel are connected to the two sections of helical teeth respectively, and the first worm wheel and the second worm wheel are connected to the first tension piece and the second tension piece through fixed shafts respectively.

[0015] Preferably, the detection assembly comprises a first conductive rod, a second conductive rod and a short circuit detection assembly, the first conductive rod is fixedly arranged on the fixing support, one end of the broken yarn detection rod is rotatably connected to the first conductive rod, the second conductive rod is arranged on the lower side of the broken yarn detection rod and is insulatively arranged between the first conductive rod and the second conductive rod, the first conductive rod, the second conductive rod and the broken yarn detection rod are all made of conductive material, and the short circuit detection assembly is connected to the first conductive rod and the second conductive rod and is used for detecting whether the first conductive rod and the second conductive rod are electrically conducted.

[0016] Preferably, the two ends of the second conductive rod are fixedly connected to the first conductive rod through an insulating block.

[0017] A loom comprises a loom body, a weft accumulator, a weft fixing support and the loom yarn doubling device, the weft accumulator is arranged at one end of the loom body, the loom yarn doubling device is arranged between the weft fixing support and the weft accumulator, and the yarn on the weft fixing support enters the loom body in sequence through the loom yarn doubling device and the weft accumulator.

[0018] Preferably, the weft accumulator is fixed on a weft accumulator fixing support, and the fixing support is also fixed on the weft accumulator fixing support.

[0019] Compared with the prior art, the loom and the yarn doubling device have the following beneficial effects:

[0020] The loom yarn doubling device uses a yarn tension mechanism to make the yarn have tension, when the yarn passes through the second guide hole on the broken yarn detection rod, the yarn with tension will make the end of the second guide hole of the broken yarn detection rod upward, the yarn tension mechanism controls the yarn to have stable tension, so as to ensure that the broken yarn detection rod is in a basically stable posture, and when a broken yarn occurs, the broken yarn detection rod will deviate from the original posture, and the detection assembly can detect whether the broken yarn occurs by detecting the position change of the broken yarn detection rod. When the yarn is not involved in weaving, the yarn stops, but the position of the broken yarn detection rod does not change, so it will not be mistaken for a broken yarn and cause downtime.

[0021] Since the loom yarn doubling device can detect whether a broken yarn occurs in real time, the yarn can directly enter the weft accumulator after passing through the loom yarn doubling device to participate in weaving, and the process of doubling and storing into a roll is saved, thereby effectively reducing the weaving cost. The two yarns of the doubling process enter the weft accumulator in parallel and will not cause damage to the yarn, and the cloth is more flat. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a perspective view of the loom yarn doubling device embodiment 1.

[0023] Figure 2 It is a side view of the loom yarn doubling device embodiment 1.

[0024] Figure 3 It is a Figure 2 sectional view at A-A.

[0025] Figure 4 It is a perspective view of the yarn tension mechanism in embodiment 1.

[0026] Figure 5 It is a structural schematic view of the loom.

[0027] Figure 6 It is a side view of the loom yarn doubling device embodiment 2.

[0028] Wherein: 1, fixed support 2, tension adjusting support 3, first guide hole 4, adjusting seat 5, first tension piece 6, second tension piece 7, adjusting knob 8, broken yarn detection rod 9, second guide hole 10, yarn 11, first conductive rod 12, second conductive rod 13, first wiring piece 14, insulating block 15, second wiring piece 16, worm 17, first turbine 18, second turbine 19, weft yarn fixing frame 20, weft accumulator fixing frame 21, weft accumulator 22, loom body 23, photoelectric switch. DETAILED DESCRIPTION

[0029] Figures 1-5 is the best embodiment of the loom and its yarn doubling device, and the following will be described in detail with reference to the accompanying drawings Figures 1-6 The utility model makes further illustration.

[0030] Embodiment 1

[0031] Reference Figures 1-3 The loom yarn doubling device comprises a fixed support 1, a yarn tension mechanism, a broken yarn detection rod 8 and a detection assembly, a first guide hole 3 is formed in the fixed support 1, the yarn tension mechanism is fixed on the fixed support 1, the yarn 10 has tension by itself after passing through the yarn tension mechanism; the broken yarn detection rod 8 is rotationally connected with the fixed support 1, and a second guide hole 9 is arranged on the broken yarn detection rod 8; the detection assembly is arranged on one side of the broken yarn detection rod 8 and is used for detecting the position change of the broken yarn detection rod 8.

[0032] In this embodiment, a plurality of first guide holes 3 are formed in the fixed support 1, a plurality of broken yarn detection rods 8 are arranged side by side on the fixed support 1, two yarn tension mechanisms are fixed on the fixed support 1, and the yarn tension mechanism is arranged between the first guide hole 3 and the broken yarn detection rod 8. The yarn 10 first passes through the first guide hole 3, then forms tension after passing through the yarn tension mechanism, and then passes through the second guide hole 9 on the broken yarn detection rod 8.

[0033] The yarn tension mechanism comprises a first tension sheet 5, a second tension sheet 6 and a tension adjusting mechanism, the first tension sheet 5 and the second tension sheet 6 clamp the yarn 10, the tension adjusting mechanism is connected with the first tension sheet 5 and the second tension sheet 6, the tension adjusting mechanism adjusts the relative angle of the first tension sheet 5 and the second tension sheet 6, so as to adjust the force of the first tension sheet 5 and the second tension sheet 6 clamping the yarn 10, and adjust the tension of the yarn 10.

[0034] The detection assembly comprises a first conductive rod 11, a second conductive rod 12 and a short circuit detection assembly, the first conductive rod 11 is fixedly arranged on the fixed support 1, one end of the broken yarn detection rod 8 is rotationally connected with the first conductive rod 11, the second conductive rod 12 is arranged on the lower side of the broken yarn detection rod 8, the two ends of the second conductive rod 12 are fixedly connected with the first conductive rod 11 through an insulating block 14 respectively, the first conductive rod 11, the second conductive rod 12 and the broken yarn detection rod 8 are all made of conductive material, the short circuit detection assembly is connected with the first conductive rod 11 and the second conductive rod 12, and the short circuit detection assembly is used for detecting whether the first conductive rod 11 and the second conductive rod 12 are in electrical conduction.

[0035] The short circuit detection assembly includes a first lug 13 connected to the first conductive rod 11, a second lug 15 connected to the second conductive rod 12, and a current detection unit (not shown in the figure) connected to the second lug 15. When the first lug 13 is powered, the current detection unit is used to detect whether the second lug 15 has current. If there is current, it means that the broken yarn detection rod 8 conducts the first conductive rod 11 and the second conductive rod 12, and a broken yarn situation occurs. The current detection unit can be the current detection unit disclosed in CN112268357A.

[0036] The first tension piece 5 and the second tension piece 6 have oppositely bent bending portions near one end of the broken yarn detection rod 8. The bending portions make the first tension piece 5 and the second tension piece 6 have a certain elasticity, so that the first tension piece 5 and the second tension piece 6 can reliably clamp the yarn 10.

[0037] Referring to Figure 4 The tension adjusting mechanism of the embodiment includes an adjusting seat 4 and a worm 16, a first turbine 17 and a second turbine 18 arranged in the adjusting seat 4. The adjusting seat 4 is composed of an upper seat body and a lower seat body in abutment. The worm 16, the first turbine 17 and the second turbine 18 are arranged between the upper seat body and the lower seat body. The worm 16 has two sections of helical teeth with opposite helical directions. The first turbine 17 and the second turbine 18 are connected to the two sections of helical teeth, respectively. The first turbine 17 and the second turbine 18 are connected to the first tension piece 5 and the second tension piece 6 through fixed shafts, respectively.

[0038] In order to reduce the volume of the adjusting seat 4, the first turbine 17 and the second turbine 18 are not regular circular, but are processed into strips. Because the adjustment range of the first tension piece 5 and the second tension piece 6 is small, the strip-shaped first turbine 17 and the second turbine 18 can also meet the adjustment requirements.

[0039] The fixed support 1 is provided with a tension adjusting support 2, and the adjusting seat 4 is fixed on the tension adjusting support 2. The yarn 10 passes through the first guide hole 3, then passes between the first tension piece 5 and the second tension piece 6, and then passes through the second guide hole 9.

[0040] The worm 16 is connected with an adjusting knob 7 at both ends. Rotating the adjusting knob 7 rotates the worm 16. The worm 16 drives the first turbine 17 and the second turbine 18 to rotate in opposite directions, thereby driving the first tension piece 5 and the second tension piece 6 to swing relatively, so as to adjust the relative angle of the first tension piece 5 and the second tension piece 6, and adjust the clamping force of the yarn 10.

[0041] The embodiment adjusts the relative angle of the first tension piece 5 and the second tension piece 6 by adjusting the worm 16, the first turbine 17 and the second turbine 18, and in other embodiments, the tension of the yarn 10 can also be adjusted by adjusting the relative distance between the first tension piece 5 and the second tension piece 6.

[0042] Referring to Figure 5 The embodiment also provides a loom, which comprises a loom body 22, a weft accumulator 21, a weft fixing frame 19 and the loom yarn joining device described above, the weft accumulator 21 is arranged at one end of the loom body 22, the loom yarn joining device is arranged between the weft fixing frame 19 and the weft accumulator 21, the yarn 10 on the weft fixing frame 19 enters the loom body 22 in sequence through the loom yarn joining device and the weft accumulator 21. The weft accumulator 21 is fixed on a weft accumulator fixing frame 20, and the fixed support 1 is also fixed on the weft accumulator fixing frame 20.

[0043] Working process: the yarn 10 roll is placed on the weft fixing frame 19, the yarn 10 on the yarn 10 roll passes through the first tension piece 5 and the second tension piece 6 after passing through the first guide hole 3 on the fixed support 1, and then enters the weft accumulator 21 from the second guide hole 9 on the broken yarn detection rod 8. Finally, different yarns 10 are respectively sprayed into the loom body 22 to complete weaving.

[0044] Because the first tension piece 5 and the second tension piece 6 clamp the yarn 10, the yarn 10 itself has tension, when the yarn 10 passes through the second guide hole 9 on the broken yarn detection rod 8, the yarn 10 with tension will make the end of the second guide hole 9 of the broken yarn detection rod 8 upwardly tilt, the yarn tension mechanism controls the yarn 10 to have stable tension, thereby ensuring that the broken yarn detection rod 8 is in a basically stable posture, and when a broken yarn occurs, the broken yarn detection rod 8 will swing downwardly to contact the second conductive rod 12, thereby causing the first conductive rod 11 and the second conductive rod 12 to be short-circuited, which is detected by the short-circuit detection assembly, thereby controlling the loom body 22 to stop. If the yarn 10 is only stopped from being conveyed without being broken, the first tension piece 5 and the second tension piece 6 will maintain the tension of the yarn 10, and the position of the yarn detection rod will not change, so it will not be mistakenly detected as a broken yarn to cause the loom body 22 to stop.

[0045] Embodiment 2

[0046] Referring to Figure 6 The detection assembly in the embodiment is a photoelectric switch 23, which is arranged below the broken yarn detection rod 8, when a broken yarn occurs, the broken yarn detection rod 8 swings downwardly, thereby being detected by the photoelectric switch 23, and further controlling the loom body 22 to stop.

[0047] The number of the broken yarn detection rods 8 is selected according to the number of the yarns to be plied, usually one broken yarn detection rod 8 corresponds to one yarn tension mechanism, but in other embodiments, more numbers of the first tension pieces 5 and the second tension pieces 6 can be arranged on the fixed support 1, the number of the yarn tension mechanisms and the broken yarn detection rods 8 is selected according to the number of the yarns 10 to be plied, and a multi-organ machine yarn plying device can also be arranged, one yarn is introduced into each multi-organ machine yarn plying device, and the plying is completed by the multi-organ machine yarn plying devices.

[0048] In other embodiments, the yarn tension mechanism can also be arranged in the yarn feeding direction of the fixed support 1, the yarn tension mechanism is arranged between the weft yarn fixed frame 19 and the fixed support 1, the yarn 10 first passes through the first tension piece 5 and the second tension piece 6, then enters the first guide hole 3, and then passes through the second guide hole 9 on the broken yarn detection rod 8 to enter the weft yarn accumulator 21.

[0049] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to obtain equivalent embodiments. However, any simple modification, equivalent change and modification of the above embodiments made according to the technical essence of the present application without departing from the technical scheme of the present application still falls within the protection scope of the present application.

Claims

1. A yarn doubling device for a weaving machine, characterized in that The utility model relates to a yarn broken detection device, including: The fixed support (1) is provided with a first guide hole (3) on the fixed support (1); The yarn tension mechanism is fixed on the fixed support (1) or is arranged on the yarn side of the fixed support (1), and the yarn (10) has tension after passing through the yarn tension mechanism; The broken yarn detection rod (8) is rotatably connected with the fixed support (1), and the second guide hole (9) is arranged on the broken yarn detection rod (8); The detection assembly is arranged on one side of the broken yarn detection rod (8) and is used for detecting the position change of the broken yarn detection rod (8).

2. The textile yarn doubling device of claim 1, wherein: At least two first guide holes (3) are arranged on the fixed support (1), at least two broken yarn detection rods (8) are arranged side by side on the fixed support (1), and at least two yarn tension mechanisms are fixed on the fixed support (1), and the yarn tension mechanism is arranged between the first guide hole (3) and the broken yarn detection rod (8).

3. A textile yarn doubling device according to claim 1 or 2, characterised in that: The yarn tension mechanism includes a first tension piece (5) and a second tension piece (6), and the first tension piece (5) and the second tension piece (6) clamp the yarn (10).

4. The loom thread doubling device according to claim 3, characterized in that: The yarn tension mechanism further includes a tension adjusting mechanism, the tension adjusting mechanism is connected with the first tension piece (5) and the second tension piece (6), and the tension adjusting mechanism adjusts the relative distance or the relative angle of the first tension piece (5) and the second tension piece (6).

5. The loom thread doubling device according to claim 4, characterized in that: The fixed support (1) is provided with a tension adjusting support (2), the tension adjusting mechanism is fixed on the tension adjusting support (2), the yarn (10) passes through the first guide hole (3), then passes through between the first tension piece (5) and the second tension piece (6), and then passes through the second guide hole (9).

6. The loom thread doubling device according to claim 4, characterized in that: The tension adjusting mechanism includes an adjusting seat (4), a worm (16), a first turbine (17) and a second turbine (18) arranged in the adjusting seat (4), the worm (16) has two sections of helical teeth with opposite helical directions, the first turbine (17) and the second turbine (18) are connected with the two sections of helical teeth respectively, and the first turbine (17) and the second turbine (18) are connected with the first tension piece (5) and the second tension piece (6) through fixed shafts respectively.

7. The loom thread doubling device according to claim 1, characterized in that: The detection assembly includes a first conductive rod (11), a second conductive rod (12) and a short circuit detection assembly, the first conductive rod (11) is fixedly arranged on the fixed support (1), one end of the broken yarn detection rod (8) is rotatably connected with the first conductive rod (11), the second conductive rod (12) is arranged on the lower side of the broken yarn detection rod (8), and the second conductive rod (12) is insulatively arranged between the first conductive rod (11), the second conductive rod (12) and the broken yarn detection rod (8) are all of conductive materials, the short circuit detection assembly is connected with the first conductive rod (11) and the second conductive rod (12), and the short circuit detection assembly is used for detecting whether the first conductive rod (11) and the second conductive rod (12) are electrically conducted.

8. The loom thread doubling device according to claim 7, characterized in that: The two ends of the second conductive rod (12) are fixedly connected with the first conductive rod (11) through an insulating block (14).

9. A loom characterised in that: The loom comprises a loom body (22), a weft accumulator (21), a weft yarn fixing frame (19) and the loom yarn doubling device of any one of claims 1-8, the weft accumulator (21) is arranged at one end of the loom body (22), the loom yarn doubling device is arranged between the weft yarn fixing frame (19) and the weft accumulator (21), and the yarn (10) on the weft yarn fixing frame (19) enters the loom body (22) after passing through the loom yarn doubling device and the weft accumulator (21) in sequence.

10. The loom according to claim 9, characterized in that: The weft accumulator (21) is fixed on a weft accumulator fixing frame (20), and the fixing support (1) is also fixed on the weft accumulator fixing frame (20).

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