High-loop low-cut jacquard carpet tufting machine and weaving method thereof

Abstract

The invention relates to the technical field of tufting machines, and provides a high-loop low-cutting jacquard carpet tufting machine and a weaving method thereof.The high-loop low-cutting jacquard carpet tufting machine comprises a pile cutting knife and a faller gill, a plurality of tufting needle sets are evenly distributed on the faller gill, each tufting needle set comprises front tufting needles and rear tufting needles in the base cloth feeding direction, and the front tufting needles and the rear tufting needles are arranged in the base cloth feeding direction. The tip of the front tufting needle is lower than that of the rear tufting needle, the front tufting needle is matched with a front yarn feeding mechanism and a loop hook, and the rear tufting needle is matched with a rear yarn feeding mechanism, a cutting hook and a pile cutting knife. The tufting needle set has the advantages that the tufting needle sets are arranged, each tufting needle set is provided with the front tufting needles and the rear tufting needles which are different in height, therefore, in the production and weaving process, the high-loop-pile and low-cut-pile carpet integrated production mode can be achieved, and the carpet shows the carpet face effect of loop-cut integrated jacquard weave of different styles in combination with a front-row servo yarn feeding jacquard system.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tufting machines, in particular, to a high-loop low-cut jacquard carpet tufting machine and a weaving method thereof. BACKGROUND

[0002] Traditional tufted jacquard carpets are basically flat-cut flat-loop, high-cut low-loop carpet surfaces, although they can combine high and low loops to produce various pattern designs, the carpet surface structure is relatively simple. The up and down movement stroke of the tufting needle is controlled by a mechanical cam or crank mechanism, which is usually a fixed value. If high-loop pile and low-cut pile are to be achieved simultaneously, the needle must dynamically change the penetration depth in the same row of tufting, but the traditional mechanical structure cannot be adjusted in real time. Even if the numerical control machine type can adjust the stroke through a servo motor, it is difficult to ensure accuracy. Moreover, the hooking knife needs to hook the yarn at a fixed height to form a loop, and the cutting knife needs to cooperate with the hooking knife to cut off the loop at a higher position to form long pile, therefore, if the loop height is low, the cutting position of the cutting knife will be correspondingly lowered, resulting in a synchronous reduction in the cutting height, making it difficult to maintain the high-loop pile effect. In addition, low-cut pile requires a smaller amount of yarn release, otherwise the loop will be loose, while high-loop pile requires a larger amount of yarn release, otherwise the length of the pile after cutting will be insufficient. The same yarn cannot dynamically switch the tension in the same row of tufting, resulting in the coexistence of high and low pile surfaces.

[0003] In existing solutions, high-loop pile and low-cut pile are often processed in multiple times, first making the low-cut pile area, then adjusting and making the high-loop pile, which is extremely low in efficiency, the joints are unnatural, or a double-needle row switching method is used, using two independent needle rows to tuft respectively, but such equipment is complex to operate, high in cost, and difficult to align patterns, even if the high-loop pile is made first, and then cut manually in the later stage, the precision of the manually cut area is poor, there are many burrs, and mass production is also impossible. SUMMARY

[0004] The present application proposes a high-loop low-cut jacquard carpet tufting machine and a weaving method thereof, by setting tufting needle groups, each group having front and rear tufting needles of different heights, thereby achieving a production mode of high-loop pile and low-cut pile without stopping the machine.

[0005] To this end, the technical solution adopted is as follows: A high-loop low-cut jacquard carpet tufting machine, comprising a cutting knife and a needle row, the needle row is uniformly arranged with a plurality of tufting needle groups, each tufting needle group comprises a front tufting needle and a rear tufting needle along the base fabric feeding direction, and the tip of the front tufting needle is lower than the tip of the rear tufting needle, the front tufting needle is matched with a front yarn feeding mechanism and a loop hook, the rear tufting needle is matched with a rear yarn feeding mechanism, a cutting hook and a cutting knife, and the installation position of the loop hook is lower than that of the cutting hook.

[0006] A further technical solution is that the needle row, loop hook, cutting hook and cutting knife are all connected with a height adjusting mechanism.

[0007] Further technical solutions are that the loop hook and the cutting hook are driven by a cooperative mechanism, the loop hook is located on the front side of the front tufting needle, and the cutting hook is located on the rear side of the rear tufting needle.

[0008] Further technical solutions are that the loop hook is slidably connected to the loop hook beam, the cutting hook is slidably connected to the cutting hook beam, the cooperative mechanism comprises a driving rod I and a driving rod II fixed with the cutting hook and the loop hook respectively, the driving rod II is vertically arranged, the bottom end of the driving rod II is fixed with a horizontally arranged connecting rod, the driving rod I is bent and inclined towards the connecting rod and is hinged to the other end of the connecting rod, the bent part of the driving rod I is rotatably connected with a support shaft I, the connecting rod is rotatably connected with a support shaft II, a push-pull rod is hinged to the driving rod I above the bent part, the other end of the push-pull rod is hinged with a transmission rod, and the transmission rod is driven to rotate by a driving motor.

[0009] A weaving method of a high-loop low-cut jacquard carpet is suitable for any one of the high-loop low-cut jacquard carpet tufting machines, and the steps are as follows: S1: the needle bar drives the front tufting needle and the rear tufting needle to descend simultaneously and enter the base fabric; S2: the loop hook and the cutting hook are driven to enter simultaneously and hook the yarns on the front tufting needle and the rear tufting needle respectively to retreat, the needle bar is lifted, and the yarns at the loop hook form high-loop pile; S3: the cutting knife is lifted, and the yarns at the cutting hook form low-cut pile.

[0010] The working principle and beneficial effects of the present application are as follows: 1. By arranging the tufting needle groups, each group has front tufting needles and rear tufting needles with different heights, so that the production mode of high-loop pile and low-cut pile can be realized without stopping or through twice weaving of the base carpet. The high and low pile surfaces can be freely combined to realize a high and low staggered three-dimensional pattern on the same base fabric, improve the production efficiency, reduce the stoppage for changing production, and adapt to two sets of yarn feeding mechanisms to optimize the yarn tension control, realize independent tension adjustment, avoid the contradiction of traditional single needle groups, and reduce the risk of yarn breakage without frequent adjustment of tension in the same row of tufting.

[0011] 2. In this case, the cooperative mechanism is provided to ensure that the loop hook and the cutting hook enter simultaneously, which does not cause the pile surface to be misaligned, significantly improves the production efficiency, can be synchronously controlled by one servo system, and reduces the complexity of programming.

[0012] 3, break the high cut low loop, flat cut flat loop traditional mode, using double row tufting needle, needle hook linkage mode, the front row can use different spacing, the back row also has a separate yarn feeding mechanism control, so that in the feeding process of the base cloth, the back row tufting needle can be woven twice, forming partial coverage, breaking the traditional tufted carpet surface restrictions, forming a superimposed weaving carpet effect, color contrast is more rich, the main level is more intense, greatly meet the novel comfortable aesthetic enjoyment requirements of the majority of users. BRIEF DESCRIPTION OF DRAWINGS

[0013] The application will be further described in detail below in conjunction with the drawings and specific embodiments.

[0014] Figure 1 The structure of the present application is shown schematically.

[0015] In the figure: 11, loop hook; 12, cutting hook; 2, cutting knife; 3, needle row; 31, front tufting needle; 32, back tufting needle; 4, base cloth; 51, front yarn feeding mechanism; 52, back yarn feeding mechanism; 61, loop hook beam; 62, cutting hook beam; 71, drive rod one; 72, drive rod two; 73, connecting rod; 74, support shaft one; 75, support shaft two; 76, push-pull rod; 77, transmission rod; 78, drive motor. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the application will be clearly and completely described below in conjunction with the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, not all. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the application.

[0017] A high-loop low-cut jacquard carpet tufting machine and its weaving method, comprising a cutting knife 2 and a needle row 3, the needle row 3 is uniformly arranged with a plurality of tufting needle groups, each tufting needle group includes a front tufting needle 31 and a back tufting needle 32 along the feeding direction of the base cloth 4, and the tip of the front tufting needle 31 is lower than the tip of the back tufting needle 32, the front tufting needle 31 is matched with a front yarn feeding mechanism 51 and a loop hook 11, the back tufting needle 32 is matched with a back yarn feeding mechanism 52, a cutting hook 12 and a cutting knife 2. The installation position of the loop hook 11 is lower than the installation position of the cutting hook 12 Among them, the needle row 3, the loop hook 11, the cutting hook 12 and the cutting knife 2 are all connected with a height adjusting mechanism, which can adapt to more tufting requirements, forming different styles, colors and heights of carpet surface.

[0018] The embodiments of the application run, the yarn feeding mechanism includes a creel, the creel has a yarn drum, and various different color types of yarn are prepared to be delivered, the creel is equipped with a tension control device, uniform delivery of the yarn is ensured, the yarn tension is kept constant, broken yarn or uneven tension is prevented, the yarn corresponding to the yarn feeding mechanism is guided to the front tufting needle 31 and the rear tufting needle 32 through a yarn guide, winding is avoided, the tufting needle has a slot hole, the yarn is inserted into the slot hole and is taken into the yarn when piercing the base cloth 4, the needle row 3 is driven to reciprocate up and down by the driving mechanism 31 and the height adjusting mechanism, after the needle row 3 descends into the base cloth 4, the loop hook 11 and the cutting hook 12 simultaneously cut in and respectively hook the yarn on the front tufting needle 31 and the rear tufting needle 32 to retreat, the needle row 3 rises back, the yarn at the loop hook 11 forms a high loop pile, and the cutting hook 12 on the cutting knife 2 rises, the yarn at the cutting hook 12 forms a low cut pile. At the same time, the base cloth 4 conveying mechanism accurately moves the base cloth 4 through servo motor or mechanical transmission control of the cloth feeding roller, and the tension roller keeps the base cloth 4 flat to prevent wrinkles. The whole process is programmed to control the needle speed, the base cloth 4 feeding, the pattern cycle and other parameters through the PLC or numerical control system, and is automatically realized.

[0019] By arranging the tufting needle group, each group has the front tufting needle 31 and the rear tufting needle 32 with different heights, so that the production mode of high loop pile and low cut pile can be realized without stopping the machine. The high and low pile surfaces are freely combined, the high and low staggered three-dimensional pattern can be realized on the same base cloth 4, the production efficiency is improved, the production stop is reduced, and two sets of yarn feeding mechanisms are adapted, the yarn tension control is optimized, independent tension adjustment is realized, the contradiction of the traditional single needle group is avoided, the tension does not need to be frequently adjusted in the same row of tufting, and the risk of broken yarn is reduced.

[0020] In this case, the cooperative mechanism is provided to ensure that the loop hook 11 and the cutting hook 12 simultaneously cut in, so that the pile surface is not dislocated, the production efficiency is significantly improved, one servo system can be synchronously controlled, and the complexity of programming is reduced.

[0021] The traditional mode of high cut low loop, flat cut flat loop is broken, the double-row tufting needle hook linkage mode is used, the front row can use different pitches, and the rear row also has a separate yarn feeding mechanism for control, so that the needle insertion position of the rear row of tufting needles can be woven twice during the feeding of the base cloth 4, partial coverage is formed, the limitation of the traditional tufted carpet surface is broken, a superimposed weaving carpet surface effect is formed, the color contrast is richer, the main level is more intense, and the novel and comfortable aesthetic enjoyment requirements of the majority of users are greatly met.

[0022] The hook 11 and the cutting hook 12 are driven by a cooperative mechanism, the hook 11 is slidably connected to the hook beam 61, the cutting hook 12 is slidably connected to the cutting hook beam 62, the cooperative mechanism comprises a driving rod one 71 and a driving rod two 72 which are fixed with the cutting hook 12 and the hook 11 respectively, the driving rod two 72 is vertically arranged, the bottom end of the driving rod two 72 is fixed with a connecting rod 73 which is horizontally arranged, the driving rod one 71 is obliquely bent towards the connecting rod 73 and is hinged to the other end of the connecting rod 73, the bent part of the driving rod one 71 is rotatably connected with a supporting shaft one 74, the connecting rod 73 is rotatably connected with a supporting shaft two 75, the driving rod one 71 is hinged with a push-pull rod 76 above the bent part, the other end of the push-pull rod 76 is hinged with a transmission rod 77, the transmission rod 77 is driven to rotate by a driving motor 78.

[0023] Firstly, the driving motor 78 drives the transmission rod 77 to rotate, under the action of the transmission rod 77, the push-pull rod 76 drives the cutting hook 12 to move back and forth along the cutting hook beam 62, referring to Figure 1 When the cutting hook 12 is driven in, the driving rod one 71 rotates clockwise around the supporting shaft one 74, at the same time, the connecting end of the driving rod one 71 drives the connecting rod 73 to rotate counterclockwise around the supporting shaft two 75, so that the driving rod two 72 which is fixed perpendicularly with the connecting rod 73 drives the hook 11 to be driven in synchronously.

[0024] Conversely, when the cutting hook 12 is driven out, the driving rod one 71 rotates counterclockwise around the supporting shaft one 74, at the same time, the connecting end of the driving rod one 71 drives the connecting rod 73 to rotate clockwise around the supporting shaft two 75, so that the driving rod two 72 which is fixed perpendicularly with the connecting rod 73 drives the hook 11 to be driven out synchronously, in actual use, only the position relationship of each connecting part of the cooperative mechanism needs to be adjusted according to different equipment specifications, so that the synchronous movement of the hook 11 and the cutting hook 12 can be realized.

[0025] The above only describes the preferred embodiment of the present application and should not be used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A high-loop low-cut jacquard carpet tufting machine, comprising a cutting knife (2) and a needle row (3), characterized in that: A plurality of tufting needle groups are evenly arranged on the needle row (3), and each tufting needle group includes a front tufting needle (31) and a rear tufting needle (32) along the feeding direction of the base fabric (4), and the tip of the front tufting needle (31) is lower than the tip of the rear tufting needle (32), the front tufting needle (31) is matched with a front yarn feeding mechanism (51) and a loop hook (11), and the rear tufting needle (32) is matched with a rear yarn feeding mechanism (52), a cutting hook (12) and a tuft cutting knife (2); the installation position of the loop hook (11) is lower than the installation position of the cutting hook (12).

2. The high-loop low-cut jacquard carpet tufting machine according to claim 1, characterized in that: The needle row (3), loop hook (11), cutting hook (12) and velvet cutting knife (2) are all connected to a height adjustment mechanism.

3. The high-loop low-cut jacquard carpet tufting machine according to claim 1, characterized in that: The loop hook (11) and the cutting hook (12) are fed together through a cooperative mechanism; the loop hook (11) is located on the front side of the front tufting needle (31), and the cutting hook (12) is located on the rear side of the rear tufting needle (32).

4. The high-loop low-cut jacquard carpet tufting machine according to claim 3, characterized in that: The ring hook (11) is located on the ring hook beam (61) and is slidably connected to it. The cutting hook (12) is located on the cutting hook beam (62) and is slidably connected to it. The cooperative mechanism includes a driving rod (71) and a driving rod (72) fixed to the cutting hook (12) and the ring hook (11) respectively. The driving rod (72) is vertically arranged, and a horizontally arranged connecting rod (73) is fixed to its bottom end. The driving rod (71) is tilted and bent toward the connecting rod (73) and is hinged to the other end of the connecting rod (73). The bending part of the driving rod (71) is rotatably connected to the support shaft (74). The connecting rod (73) is rotatably connected to the support shaft (75). A push-pull rod (76) is hinged on the driving rod (71) above the bending part. The other end of the push-pull rod (72) is hinged to a transmission rod (77). The transmission rod (77) is driven to rotate by a driving motor (78).

5. The weaving method of a high-loop, low-cut jacquard carpet according to claim 1, applicable to any one of the high-loop, low-cut jacquard carpet tufting machines according to claims 1-4, comprising the following steps: S1: The needle row (3) drives the front tufting needle (31) and the rear tufting needle (32) to simultaneously descend and enter the base fabric (4); S2: The loop hook (11) and the cutting hook (12) advance simultaneously and respectively hook the yarn on the front tufting needle (31) and the rear tufting needle (32) and retract, the needle row (3) rises, and the yarn at the loop hook (11) forms a high loop pile; S3: The cutting knife (2) moves upward, and the yarn at the cutting hook (12) forms a low-cut pile.

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