Weft selecting device of carpet loom
Through the servo motor-controlled lead screw slide table and tension adjustment structure, combined with the cleaning structure, the tension adjustment and cleaning problems of traditional weft selection devices are solved, dynamic adjustment of weft tension and cleaning is achieved, and the production efficiency and quality of carpet weaving is improved.
Patent Information
- Application Number
- CN202510707938.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-29
- Publication Date
- 2025-08-22
AI Technical Summary
Traditional mechanical weft selection devices cannot achieve dynamic adaptive adjustment of weft tension, resulting in defects such as weft slant and flower jumps, and lack closed-loop feedback control and cleaning functions, affecting production efficiency and product quality.
The screw slide platform and tension adjustment structure controlled by servo motor are adopted, combined with the cleaning structure, to realize adaptive adjustment and cleaning functions of weft tension, including spacing adjustment, hook-off-line operation and weft cleaning.
Dynamic adjustment of weft tension and cleaning is achieved, defects are reduced, production efficiency and product quality are improved, and complex patterns and high-quality needs of high-end carpets are met.
Smart Images
Figure CN120520008A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of textiles, and in particular relates to a weft selection device for a carpet loom. Background Art
[0002] As the carpet manufacturing industry transitions toward intelligent and sophisticated manufacturing, the weft selection mechanism on carpet looms, a core component that enables the production of complex patterns and precise switching of multi-colored weft yarns, faces significant technological advancements. With the surge in demand for personalized, high-quality carpets in the global home decor market, the proportion of high-end carpet orders requiring complex jacquard patterns and special weft yarns (such as silk and wool blends) is increasing year by year, posing a significant challenge to the overall performance of the weft selection mechanism.
[0003] At present, traditional mechanical weft selection devices mostly use a fixed-tension transmission structure, and their tension adjustment relies on manual adjustment of the weight or spring preload based on human experience. This extensive adjustment method has two major technical bottlenecks: First, it is unable to achieve dynamic adaptive adjustment when faced with wefts of different linear densities (such as 50D-300D) and significantly different elastic moduli. During the weaving process, defects such as weft skew and skipping often occur due to sudden changes in weft tension. Second, there is a lack of a closed-loop feedback control mechanism, and it is impossible to monitor weft tension fluctuations in real time. When the weft passes through components such as yarn guides and tensioners, friction loss occurs, and it is difficult to actively compensate for tension attenuation, resulting in uneven fabric density. According to industry statistics, weaving defects caused by improper tension adjustment account for as much as 23%, seriously restricting production efficiency and the improvement of yield rate.
[0004] At the same time, the lack of cleaning functionality in existing weft selection systems has become increasingly prominent under the dual standards of environmental protection and quality. If chemical dust and microbial contaminants adhering to the weft yarn surface are not effectively removed, they will undergo chemical migration during the high-temperature weaving process, threatening the product's environmental performance. Traditional manual wiping or simple air-blowing cleaning methods cannot meet the continuous cleaning requirements of high-speed weaving (≥800r / min). This is especially true when handling long-staple weft yarns that are prone to tangling, where impurities block the yarn guide channel, causing frequent downtime.
[0005] In summary, how to build a weft selection device with multi-parameter adaptive tension control, intelligent cleaning and performance monitoring functions has become a key issue in breaking through the bottleneck of carpet weaving technology and enhancing the core competitiveness of the industry. Summary of the Invention
[0006] The object of the present invention is to provide a weft selection device for a carpet loom to solve the problems raised in the above background technology.
[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a weft selection device for a carpet loom, comprising a frame, wherein two groups of weft feeding structures are provided on the frame, an extension frame is fixed on one side of the frame, a spacing adjustment structure for adjusting the spacing between weft threads is provided on the extension frame, an arrow rod for selecting the weft threads is provided at the extension frame, a support frame is fixed on the frame, a screw slide controlled by a first servo motor is installed on the support frame, the arrow rod is rotatably connected to a supporting seat, a second servo motor for driving the arrow rod to rotate is fixed on the supporting seat, the bearing seat is installed on the output part of the screw slide, an extension shaft is installed at one end of the screw slide, a tension adjustment structure for controlling the tension adjustment of two groups of weft threads is provided on the frame, the extension shaft and the tension adjustment structure are connected by a linkage structure, and cleaning structures for cleaning the weft threads are respectively fixed on both sides of the frame.
[0008] By adopting the above technical solution, the weft selection device of the carpet loom has the effect of adjusting the tension of the weft and cleaning the weft when replacing the weft; when the weft selection device is applied, two groups of wefts to be selected are transmitted through the weft feeding structure, and are tensioned to a certain extent and the spacing is adjusted when passing through the spacing adjustment structure on the extension frame, which is convenient for subsequent arrow rods to select and replace the weft; when the weft is replaced, the first servo motor can be used to control the screw slide, and then drive the support seat to adjust the position, and then start the second servo motor to drive the arrow rod to flip and adjust, and cooperate with the screw slide to realize the hook-off-hook operation. When the second servo motor is started, it can drive the extension shaft to rotate, and rely on the linkage structure and the tension adjustment structure to adjust the tension of the weft, and cooperate with the cleaning structure to realize the weft cleaning, thereby ensuring that the subsequent woven carpet has good performance.
[0009] Preferably, the weft delivery structure includes a first wire delivery drum, a second wire delivery drum, a wire guide, a fixed seat, a sliding seat, a third servo motor and a screw. The fixed seat is fixed on the frame, the sliding seat is horizontally slidably connected to the fixed seat, the third servo motor is fixed on the fixed seat, one end of the screw is fixed to the motor shaft end of the third servo motor, the screw is threadedly connected to the sliding seat, the wire guide is fixed on the frame, the first wire delivery drum is rotatably connected to the sliding seat, and the second wire delivery drum is rotatably connected to the frame.
[0010] By adopting the above technical solution, the weft yarn transported through the first wire feeder and the second wire feeder can be tensioned to avoid loosening, and the position of the sliding seat can be adjusted by relying on the third servo motor and the screw, so that the position of the sliding seat relative to the fixed seat can be adjusted, and the tensioning force can be further adjusted. The weft yarn output by the wire guide can ensure the correct conveying direction to prevent broken and tangled threads.
[0011] Preferably, the spacing adjustment structure includes a first left and right guide roller group, a first intermediate roller, a second intermediate roller, a first clamping roller group and a second clamping roller group. The first left and right guide roller group, the first intermediate roller, the second intermediate roller, the first clamping roller group and the second clamping roller group are respectively rotatably connected to the extension frame, and the first clamping roller group and the second clamping roller group are respectively located on both sides of the first intermediate roller and the second intermediate roller.
[0012] By adopting the above technical solution, the spacing between two selected wefts can be adjusted using the spacing adjustment structure. When the wefts are changed in direction by the first left and right guide roller groups in turn, the spacing can be adjusted by the first intermediate roller, the second intermediate roller, the first clamping roller group and the second clamping roller group, thereby achieving the purpose of adjusting the spacing between adjacent wefts.
[0013] Preferably, the tension adjustment structure includes a bearing seat, a first support shaft, two crank wheels and two pressure sensors. The bearing seat is installed on the frame. The first support shaft and the bearing seat are rotatably connected. The two crank wheels are respectively fixed at both ends of the first support shaft for two weft threads to pass around. The two pressure sensors are respectively installed in the crank wheels for detecting the weft thread pressure.
[0014] By adopting the above technical solution, since the two groups of weft threads to be selected pass around the crank wheel, the internal tension of the weft threads can be adjusted when the crank wheel rotates, and the pressure sensor on the crank wheel can monitor the tension of the weft threads.
[0015] Preferably, the linkage structure includes an electromagnetic clutch, a second support shaft, a third support shaft, a first pulley, a second pulley and a belt, the electromagnetic clutch is installed at the end of the extension shaft, the second support shaft and the extension shaft are cut off and controlled by the electromagnetic clutch, the third support shaft is fixed at the end of the first support shaft, the first pulley is fixed outside the second support shaft, the second pulley is fixed outside the third support shaft, and the belt drive is connected to the outside of the first pulley and the second pulley.
[0016] By adopting the above technical solution, when the first servo motor drives the screw slide to move, it can drive the extension shaft to rotate, and the electromagnetic clutch can be controlled to control the disconnection control of the extension shaft and the second support shaft, thereby driving the first support shaft to rotate, thereby driving the crank wheel to adjust the angle, and when the second support shaft rotates, it can.
[0017] Preferably, the arrow shaft comprises a handle and an arrowhead, an inclined notch is provided on the arrowhead, the arrowhead and the handle are detachably connected, and an elastic line-blocking block is provided in the notch.
[0018] By adopting the above technical solution, the handle in the arrow shaft can be driven by the second servo motor to flip over, and the notch on the arrow and the elastic thread blocking block can be used to hook the weft thread and send it to the designated weaving position.
[0019] Preferably, the cleaning structure includes a spring telescopic sleeve, a U-shaped plate, and a sponge cleaning block. The spring telescopic sleeve is installed on the frame, the U-shaped plate is fixed to one end of the spring telescopic sleeve, and the sponge cleaning block is fixed in the opening of the U-shaped plate.
[0020] By adopting the above technical solution, when the weft thread is driven to be conveyed, the sponge cleaning block on the spring telescopic sleeve and the U-shaped plate can clean the weft thread.
[0021] Preferably, a mounting member is welded to one side of the frame. The mounting member is U-shaped and has a waist-shaped slot hole opened thereon.
[0022] By adopting the above technical solution, the installation and fixation of the device can be realized by using the mounting member and the waist-shaped slot hole thereon.
[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0024] The weft selection device of the local carpet loom has the effects of adjusting the tension of the weft thread and cleaning the weft thread when replacing the weft thread; when applying this weft selection device, two groups of to-be-selected weft threads are transmitted through the weft transmission structure, and are tensioned to a certain extent and the spacing is adjusted when passing through the spacing adjustment structure on the extension frame, which is convenient for the subsequent rapier to tick and replace the weft thread; when performing the operation of replacing the weft thread, the first servo motor can be relied on to control the screw slide table, and then the supporting seat is driven to adjust the position. After that, starting the second servo motor can drive the rapier to flip and adjust, and cooperate with the screw slide table to realize the operations of hooking the thread - unhooking the thread - hooking the thread. When the second servo motor is started, the extension shaft can be driven to rotate, and the tension of the weft thread can be adjusted by relying on the linkage structure and the tension adjustment structure, and the weft thread can be cleaned in cooperation with the cleaning structure, so as to ensure that the subsequent woven carpet has good performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 is one of the structural schematic diagrams of the present invention;
[0026] Figure 2 is another structural schematic diagram of the present invention;
[0027] Figure 3 is Figure 2 the enlarged schematic view of part A in
[0028] Figure 4 is Figure 2 the enlarged schematic view of part B in
[0029] Figure 5 is one of the structural schematic diagrams of the present invention;
[0030] Figure 6 is Figure 5 the enlarged schematic view of part C in
[0031] In the figure: 1, frame; 2, weft input structure; 11, extension frame; 3, spacing adjustment structure; 12, arrow bar; 13, support frame; 14, first servo motor; 15, lead screw slide; 16, support seat; 17, second servo motor; 18, extension shaft; 4, tension adjustment structure; 5, linkage structure; 21, first wire spool; 22, second wire spool; 23, wire guide; 24, fixed seat; 25, sliding seat; 26, third servo motor; 27, screw; 31, first left and right guide roller group; 32, first intermediate roller; 33, second intermediate roller; 34, first pinch roller group; 35, second pinch roller group; 41, bearing seat; 42, first support shaft; 43, crank wheel; 51, electromagnetic clutch; 52, second support shaft; 53, third support shaft; 54, first pulley; 55, second pulley; 56, belt; 121, rod handle; 122, arrowhead; 6, cleaning structure; 61, spring telescopic sleeve; 62, U-shaped plate; 63, sponge cleaning block; 19, mounting part. Specific embodiments
[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0033] Please refer to Figure 1 、 Figure 2 and Figure 5 As shown in, the present invention provides a technical solution: a weft selection device for a carpet loom, including a frame 1, two weft input structures 2 are arranged on the frame 1, an extension frame 11 is fixed on one side of the frame 1, a spacing adjustment structure 3 for adjusting the weft spacing is arranged on the extension frame 11, an arrow bar 12 for selecting the weft is arranged at the extension frame 11, a support frame 13 is fixed on the frame 1, a lead screw slide 15 controlled by a first servo motor 14 is installed on the support frame 13, the arrow bar 12 is rotatably connected to a support seat 16, a second servo motor 17 for driving the arrow bar 12 to rotate is fixed on the support seat 16, the bearing seat is installed on the output part of the lead screw slide 15, an extension shaft 18 is installed at one end of the lead screw slide 15, a tension adjustment structure 4 for controlling the tension adjustment of two wefts is arranged on the frame 1, and the extension shaft 18 is connected to the tension adjustment structure 4 through a linkage structure 5. Cleaning structures 6 for cleaning the weft are respectively fixed on both sides of the frame 1.
[0034] Please refer to Figure 1 、 Figure 2 and Figure 5The weft selection device of this carpet loom has the effect of adjusting the tension of the weft and cleaning the weft when replacing the weft; when the weft selection device is applied, two groups of wefts to be selected are transmitted through the weft feeding structure 2, and are tensioned to a certain extent and the spacing is adjusted when passing through the spacing adjustment structure 3 on the extension frame 11, so as to facilitate the subsequent arrow 12 to select and replace the weft; when the weft is replaced, the first servo motor 14 can be used to control the screw slide 15, and then the supporting seat 16 can be driven to adjust the position, and then the second servo motor 17 can be started to drive the arrow 12 to flip and adjust, and cooperate with the screw slide 15 to realize the hooking-unhooking-hooking operation. When the second servo motor 17 is started, it can drive the extension shaft 18 to rotate, and rely on the linkage structure 5 and the tension adjustment structure 4 to adjust the tension of the weft, and cooperate with the cleaning structure 6 to realize the weft cleaning, thereby ensuring that the subsequent woven carpet has good performance.
[0035] refer to Figure 1 、 Figure 5 and Figure 6 The weft feeding structure 2 includes a first weft feeding disc 21, a second weft feeding disc 22, a thread guide 23, a fixed seat 24, a sliding seat 25, a third servo motor 26 and a screw 27. The fixed seat 24 is fixed on the frame 1, the sliding seat 25 is horizontally slidably connected to the fixed seat 24, the third servo motor 26 is fixed on the fixed seat 24, one end of the screw 27 is fixed to the motor shaft end of the third servo motor 26, the screw 27 is threadedly connected to the sliding seat 25, the thread guide 23 is fixed on the frame 1, the first weft feeding disc 21, the second thread feeding disc 22, a thread guide 23, a fixed seat 24, a sliding seat 25, a third servo motor 26 and a screw 27. The disk 21 is rotatably connected to the sliding seat 25, and the second wire feeder disk 22 is rotatably connected to the frame 1; the weft yarn transported through the first wire feeder and the second wire feeder can be tensioned by the first wire feeder and the second wire feeder to avoid loosening, and the position of the sliding seat 25 can be adjusted by relying on the third servo motor 26 and the screw 27, so that the position of the sliding seat 25 relative to the fixed seat 24 can be adjusted, and the tensioning force can be further adjusted, and the weft yarn output by the wire guide 23 can ensure the correct conveying direction to prevent broken and tangled yarns.
[0036] refer to Figure 2 and Figure 3 The spacing adjustment structure 3 includes a first left and right guide roller group 31, a first intermediate roller 32, a second intermediate roller 33, a first clamping roller group 34, and a second clamping roller group 35. The first left and right guide roller groups 31, the first intermediate roller 32, the second intermediate roller 33, the first clamping roller group 34, and the second clamping roller group 35 are respectively rotatably connected to the extension frame 11. The first clamping roller group 34 and the second clamping roller group 35 are respectively located on both sides of the first intermediate roller 32 and the second intermediate roller 33. The spacing adjustment structure 3 can be used to adjust the spacing between two to-be-selected weft threads. When the weft threads are sequentially changed in direction by the first left and right guide roller groups 31, the spacing can be adjusted by the first intermediate roller 32, the second intermediate roller 33, the first clamping roller group 34, and the second clamping roller group 35, thereby achieving the purpose of adjusting the spacing between adjacent weft threads.
[0037] refer to Figures 1 to 6 The tension adjustment structure 4 includes a bearing seat 41, a first support shaft 42, two crank wheels 43 and two pressure sensors. The bearing seat 41 is installed on the frame 1. The first support shaft 42 is rotatably connected to the bearing seat 41. The two crank wheels 43 are respectively fixed at both ends of the first support shaft 42 for two weft threads to pass around. The two pressure sensors are respectively installed in the crank wheels 43 to detect the pressure of the weft threads. Since the two groups of weft threads to be selected pass around the crank wheel 43, the internal tension of the weft threads can be adjusted when the crank wheel 43 rotates. The pressure sensor on the crank wheel 43 can monitor the tension of the weft threads.
[0038] refer to Figures 1 to 6 , wherein the linkage structure 5 includes an electromagnetic clutch 51, a second support shaft 52, a third support shaft 53, a first pulley 54, a second pulley 55 and a belt 56, the electromagnetic clutch 51 is installed at the end of the extension shaft 18, and the second support shaft 52 and the extension shaft 18 are cut off and controlled by the electromagnetic clutch 51, the third support shaft 53 is fixed to the end of the first support shaft 42, the first pulley 54 is fixed to the outside of the second support shaft 52, the second pulley 55 is fixed to the outside of the third support shaft 53, and the belt 56 is connected to the outside of the first pulley 54 and the second pulley 55; when the first servo motor 14 drives the screw slide 15 to move, it can drive the extension shaft 18 to rotate, and the cut-off control of the extension shaft 18 and the second support shaft 52 can be controlled by controlling the electromagnetic clutch 51, thereby driving the first support shaft 42 to rotate, thereby driving the crank wheel 43 to adjust the angle, and when the second support shaft 52 rotates.
[0039] refer to Figure 2 and Figure 3 The arrow shaft 12 includes a handle 121 and an arrow 122. An inclined notch is provided on the arrow 122. The arrow 122 and the handle 121 are detachably connected. An elastic thread stop block is provided in the notch. The handle in the arrow shaft 12 can be driven to flip by the second servo motor 17. The notch on the arrow 122 and the elastic thread stop block can be used to hook the weft thread and send it to the designated weaving position.
[0040] refer to Figure 1 、 Figure 5 and Figure 6, wherein the cleaning structure 6 includes a spring telescopic sleeve 61, a U-shaped plate 62 and a sponge cleaning block 63. The spring telescopic sleeve 61 is installed on the frame 1, the U-shaped plate 62 is fixed at one end of the spring telescopic sleeve 61, and the sponge cleaning block 63 is fixed in the opening of the U-shaped plate 62. When the weft is driven to be conveyed, the sponge cleaning block 63 on the spring telescopic sleeve 61 and the U-shaped plate 62 can clean the weft. One side of the frame 1 is welded with a mounting member 19, the mounting member 19 is U-shaped, and a waist-shaped slot is opened on the mounting member 19. By using the mounting member 19 and the waist-shaped slot on it, the installation and fixation of the device can be realized.
[0041] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A weft selection device for a carpet loom, comprising a frame (1), characterized in that: The frame (1) is provided with two sets of weft feeding structures (2), an extension frame (11) is fixed on one side of the frame (1), a spacing adjustment structure (3) for adjusting the spacing of weft threads is provided on the extension frame (11), an arrow rod (12) for selecting weft threads is provided on the extension frame (11), a support frame (13) is fixed on the frame (1), a screw slide (15) controlled by a first servo motor (14) is installed on the support frame (13), and the arrow rod (12) is rotatably connected to a supporting seat (16). A second servo motor (17) for driving the arrow shaft (12) to rotate is fixed on the supporting seat (16), and the supporting seat is installed on the output part of the screw slide (15). An extension shaft (18) is installed at one end of the screw slide (15). A tension adjustment structure (4) for controlling the tension adjustment of two groups of weft threads is provided on the frame (1), and the extension shaft (18) and the tension adjustment structure (4) are connected via a linkage structure (5). Cleaning structures (6) for cleaning weft threads are respectively fixed on both sides of the frame (1).
2. A weft selection device for a carpet loom according to claim 1, characterized in that: The weft feeding structure (2) comprises a first weft feeding disc (21), a second weft feeding disc (22), a thread guide (23), a fixed seat (24), a sliding seat (25), a third servo motor (26) and a screw rod (27); the fixed seat (24) is fixed on the frame (1); the sliding seat (25) is horizontally slidably connected to the fixed seat (24); the third servo motor (26) is fixed on the fixed seat (24); one end of the screw rod (27) is fixed to the motor shaft end of the third servo motor (26); the screw rod (27) is threadedly connected to the sliding seat (25); the thread guide (23) is fixed on the frame (1); the first weft feeding disc (21) is rotatably connected to the sliding seat (25); and the second weft feeding disc (22) is rotatably connected to the frame (1).
3. The weft selection device for a carpet loom according to claim 1, characterized in that: The spacing adjustment structure (3) comprises a first left and right guide roller group (31), a first middle roller (32), a second middle roller (33), a first clamping roller group (34) and a second clamping roller group (35); the first left and right guide roller group (31), the first middle roller (32), the second middle roller (33), the first clamping roller group (34) and the second clamping roller group (35) are respectively rotatably connected to the extension frame (11); the first clamping roller group (34) and the second clamping roller group (35) are respectively located on both sides of the first middle roller (32) and the second middle roller (33).
4. The weft selection device for a carpet loom according to claim 3, characterized in that: The tension adjustment structure (4) comprises a bearing seat (41), a first support shaft (42), two crank wheels (43) and two pressure sensors, wherein the bearing seat (41) is mounted on the frame (1), the first support shaft (42) and the bearing seat (41) are rotatably connected, the two crank wheels (43) are respectively fixed at both ends of the first support shaft (42) for two weft threads to pass around, and the two pressure sensors are respectively mounted in the crank wheels (43) for detecting weft thread pressure.
5. The weft selection device for a carpet loom according to claim 4, characterized in that: The linkage structure (5) includes an electromagnetic clutch (51), a second support shaft (52), a third support shaft (53), a first pulley (54), a second pulley (55) and a belt (56). The electromagnetic clutch (51) is installed at the end of the extension shaft (18). The second support shaft (52) and the extension shaft (18) are cut off and controlled by the electromagnetic clutch (51). The third support shaft (53) is fixed at the end of the first support shaft (42). The first pulley (54) is fixed outside the second support shaft (52). The second pulley (55) is fixed outside the third support shaft (53). The belt (56) is drivingly connected outside the first pulley (54) and the second pulley (55).
6. The weft selection device for a carpet loom according to claim 1, characterized in that: The arrow rod (12) includes a rod handle (121) and an arrowhead (122). An inclined notch is formed on the arrowhead (122). The arrowhead (122) and the rod handle (121) are detachably connected. An elastic wire blocking block is arranged in the notch.
7. The weft selection device for a carpet loom according to claim 1, characterized in that: The cleaning structure (6) includes a spring telescopic sleeve (61), a U-shaped plate (62) and a sponge cleaning block (63). The spring telescopic sleeve (61) is installed on the machine frame (1). The U-shaped plate (62) is fixed at one end of the spring telescopic sleeve (61). The sponge cleaning block (63) is fixed in the opening of the U-shaped plate (62).
8. The weft selection device for a carpet loom according to claim 1, characterized in that: An installation part (19) is welded on one side of the machine frame (1). The installation part (19) is U-shaped and is provided with a waist-shaped slot hole.