Yarn feeding device of tufting equipment

Abstract

The utility model provides a tufting equipment yarn feeding device, which comprises a top yarn guide plate and a plurality of groups of yarn guide rollers, the plurality of groups of yarn guide rollers are positioned at the downstream of the top yarn guide plate, each group of yarn guide rollers comprises a lower roller and an upper roller, and each group of yarn guide rollers is connected with an independent power transmission mechanism; a yarn collecting plate, a yarn guiding plate and a yarn guiding plate are sequentially arranged on the downstream of the multiple groups of yarn guiding rollers; a first fixed yarn guide plate; the position of the adjustable yarn guide plate in the vertical direction is adjustable; the second fixed yarn guide plate and the third fixed yarn guide plate are arranged close to a tufting needle of the tufting equipment. Each group of yarn guide rollers can be independently used for transmitting a grass yarn, each group of yarn guide rollers is connected with an independent power transmission mechanism, and meanwhile, a series of yarn guide plates are arranged, so that the yarn can be transmitted under a stable tension condition, and the production quality of a multi-grass-yarn lawn is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of tufting equipment, and in particular relates to a yarn feeding device for tufting equipment. Background Art

[0002] At present, artificial turf at home and abroad is mainly produced and processed by tufting technology and tufting equipment. The principle of tufting equipment is similar to that of a sewing machine. Tufting needles are installed on the tufting equipment. The tufting needles are arranged in a row horizontally, which can carry the yarn up and down to continuously penetrate the moving base fabric, and then hook it out through the hooking mechanism, and the cutter cuts it to form grass silk to make artificial turf. In order to ensure the uniformity of the grass silk and the quality of the lawn, the yarn needs to be fed into the tufting needle with stable tension during the production process. Therefore, the tufting equipment is usually equipped with a yarn feeding device, which is generally equipped with a wire roller, and the stable transmission of the yarn is achieved by the uniform rotation of the roller.

[0003] The prior art provides some yarn feeding devices for tufting equipment. For example, Chinese patent document CN208829888U discloses a yarn feeding device for tufting equipment, which is a pair of guide rollers arranged up and down, and a yarn feeding roller is also provided downstream of the yarn feeding device. When the tufting machine is working, the yarn is pulled from the yarn bobbin to the yarn feeding device, and then transmitted to the yarn feeding roller through the yarn feeding device and then transported to the tufting needle, and the yarn is uniformly transmitted through the guide roller and the yarn feeding roller. In addition, Chinese patent document CN202401262U also discloses a tufting machine, and the yarn feeding device used in the tufting machine includes a tuft yarn roller and a yarn guide tension device, and the tuft yarn roller and the yarn guide tension device are arranged on the tuft yarn movement path along the tuft yarn movement direction, and are used to transmit the tuft yarn.

[0004] The yarn feeding device in the above-mentioned prior art can realize the stable transmission of yarn, but with the continuous development of lawns, lawn grass fibers have shown a trend of diversification. Compared with single grass fibers, lawns woven with multiple grass fibers have better mechanical properties and are closer to the texture of natural lawns. The yarn feeding device of the tufting equipment suitable for single grass fibers cannot meet the needs of such lawn production. Therefore, how to explore a yarn feeding device for tufting equipment that can be suitable for the preparation of multi-grass fiber lawns and can be used for the transmission of multiple yarns is a difficult problem that the prior art needs to solve. Summary of the invention

[0005] The utility model solves the technical problem of how to realize the feeding and transmission of multiple yarns to meet the production needs of multi-grass silk lawns, and further provides a tufting equipment yarn feeding device that can be suitable for the preparation of multi-grass silk lawns and can be used for the transmission of multiple yarns.

[0006] The technical solution adopted by the utility model to solve the above technical problems is:

[0007] A yarn feeding device for a tufting device, comprising:

[0008] A top yarn guiding plate and multiple groups of yarn guiding rollers. The multiple groups of yarn guiding rollers are located downstream of the top yarn guiding plate. Each group of yarn guiding rollers includes a lower roller and an upper roller, and each group of yarn guiding rollers is connected with an independent power transmission mechanism;

[0009] Downstream of the multiple groups of yarn guiding rollers, the following are sequentially arranged:

[0010] A yarn collecting plate;

[0011] A first fixed yarn guiding plate;

[0012] An adjustable yarn guiding plate, the position of which in the vertical direction is adjustable;

[0013] A second fixed yarn guiding plate and a third fixed yarn guiding plate. The yarn guiding hole of the third fixed yarn guiding plate is located obliquely above the tufting needle piercing end of the tufting device.

[0014] The lower roller in each group of the yarn guiding rollers is located upstream of the upper roller, and the upper roller in each group of the yarn guiding rollers is located obliquely above the lower roller in the same group.

[0015] The multiple groups of yarn guiding rollers are arranged vertically.

[0016] The included angle between the connection line of the yarn entry point of the lower roller of the multiple groups of yarn guiding rollers arranged from top to bottom and the hole center of the yarn collecting plate and the vertical direction gradually increases.

[0017] The corresponding hole axes on the yarn collecting plate, the first fixed yarn guiding plate, the adjustable yarn guiding plate, the second fixed yarn guiding plate and the third fixed yarn guiding plate are located in the same vertical plane.

[0018] A driving roller is also arranged between the first fixed yarn guiding plate and the adjustable yarn guiding plate.

[0019] Two driving rollers are provided, and a gap is arranged between the two driving rollers.

[0020] The diameter of the driving roller is smaller than the diameter of the roller in the yarn guiding roller.

[0021] A fixed yarn guiding plate bracket is arranged above the tufting needle, and the second fixed yarn guiding plate and the third fixed yarn guiding plate are fixedly installed on the fixed yarn guiding plate bracket.

[0022] The multiple groups of yarn guiding rollers share one driving motor, and the driving motor is respectively connected with the multiple groups of yarn guiding rollers through multiple sets of gear transmission mechanisms.

[0023] The advantages of the yarn feeding device for the tufting device of the present utility model are as follows:

[0024] The yarn feeding device of the tufting equipment described in this application includes a top yarn guiding plate and multiple groups of yarn guiding rollers located downstream of the top yarn guiding plate. In this application, each group of yarn guiding rollers can be independently used to transmit a kind of grass yarn, and each group of yarn guiding rollers is connected with an independent power transmission mechanism, so that the rotational speed of this group of yarn guiding rollers can be set separately according to the characteristics of the grass yarn, enabling the yarn to be transmitted under stable tension conditions. In the yarn feeding device of the tufting equipment in this application, a yarn collecting plate, a first fixed yarn guiding plate, an adjustable yarn guiding plate, a second fixed yarn guiding plate, and a third fixed yarn guiding plate are sequentially arranged downstream of the multiple groups of yarn guiding rollers. Among them, the yarn collecting plate is used to concentrate multiple yarns into one strand, and a series of yarn guiding plates on the yarn path can further improve the stability of the tension of the mixed yarn after being concentrated into one strand.

[0025] As a preferred embodiment, a driving roller is further arranged between the yarn collecting plate and the first fixed yarn guiding plate in the yarn feeding device of this application. The driving roller is used to further provide power for the transmission of the yarn on the path, making the distribution of the transmission power of the yarn on the path more uniform. This application further preferably has the lower roller in each group of yarn guiding rollers located obliquely below the top yarn guiding plate, and the upper roller in each group of yarn guiding rollers located obliquely above the lower roller in the same group. The two rollers are arranged obliquely, which is beneficial to increasing the contact length between the yarn and the rollers when passing through. The multiple groups of yarn guiding rollers are arranged vertically. At the same time, this application preferably has the included angle between the connecting line of the yarn entry point of the lower rollers of the multiple groups of yarn guiding rollers arranged from top to bottom and the center of the hole of the yarn collecting plate gradually increasing with the vertical direction, thereby reducing the mutual interference between each group of rollers.

[0026] In order to make the technical solution of the yarn feeding device of the tufting equipment described in this utility model clearer, the following further details the present utility model in combination with specific drawings and specific embodiments. Description of the Drawings

[0027] As Figure 1 shown is a schematic structural diagram of the yarn feeding device of the tufting equipment provided with two groups of yarn guiding rollers described in this application;

[0028] As Figure 2 shown is a schematic structural diagram of the top yarn guiding plate described in this application;

[0029] As Figure 3 shown is a schematic structural diagram of the top yarn guiding plate, multiple groups of yarn guiding rollers, and the yarn collecting plate described in this application;

[0030] As Figure 4 shown is a schematic structural diagram of the yarn collecting plate described in this application;

[0031] As Figure 5The figure shows a schematic structural diagram of a yarn feeding device of a tufting device provided with three groups of wire rollers according to the present application;

[0032] Among them, the reference numerals are:

[0033] 1 - top yarn guide plate; 21 - lower roller of the first wire roller group; 22 - upper roller of the first wire roller group; 211 - first yarn; 31 - lower roller of the second wire roller group; 32 - upper roller of the second wire roller group; 311 - second yarn; 33 - lower roller of the third wire roller group; 34 - upper roller of the third wire roller group; 331 - third yarn; 4 - yarn collecting plate; 5 - first fixed yarn guiding plate; 6 - adjustable yarn guiding plate; 7 - second fixed yarn guiding plate; 8 - third fixed yarn guiding plate; 9 - threading plate of the tufting device; 10 - push rod foot; 11 - fixed yarn guiding plate bracket; 12 - tufting needle. Detailed implementation manners

[0034] In the following implementation manners, the terms "upstream" and "downstream" used to describe the arrangement of each component of the yarn feeding device are relative to the transmission path of the yarn feeding device for transmitting the yarn. The position through which the yarn passes first is located upstream, and the position through which it passes later is located downstream. Embodiment 1

[0035] This embodiment provides a yarn feeding device for a tufting device. The yarn feeding device is as Figure 1 shown, and includes a top yarn guide plate 1, multiple groups of wire rollers, a yarn collecting plate 4, a first fixed yarn guiding plate 5, an adjustable yarn guiding plate 6, a second fixed yarn guiding plate 7, and a third fixed yarn guiding plate 8, which are installed on the main body of the tufting device and are sequentially distributed from upstream to downstream along the yarn transmission path.

[0036] As Figure 1 and Figure 2 shown, in this embodiment, the axis of the yarn guiding hole of the top yarn guide plate 1 is arranged in the vertical direction. A row of yarn guiding holes is arranged horizontally on the top yarn guide plate 1, and yarns of two materials arranged in a fixed order pass through the yarn guiding holes of the top yarn guide plate 1 described in this embodiment. As Figure 2 shown, the two materials of yarns are the first yarn and the second yarn 311 respectively.

[0037] In this embodiment, two groups of wire rollers are provided to cooperate with the two yarns. As Figure 3As shown, they are the first wire roller group and the second wire roller group respectively. The two groups of wire rollers are in a "parallel" relationship. The first yarn coming down from the top yarn guide plate 1 is conveyed to the first wire roller group, and the second yarn 311 is conveyed to the second wire roller group. As a preferred embodiment, in this embodiment, the lower roller 21 of the first wire roller group is located below the top yarn guide plate 1, and the entry point of the first yarn into the lower roller 21 of the first wire roller group is located obliquely below the yarn guide hole of the top yarn guide plate 1, so that the connecting line between the yarn entry point of the lower roller and the hole center of the yarn collecting plate 4 forms an angle with the vertical direction, that is, the first yarn forms an angle with the vertical direction. The "yarn entry point" mentioned in this embodiment refers to the position where the yarn first contacts the wire roller after reaching the wire roller. After the lower part of the first yarn loop passes under the lower roller, it then reaches the upper part of the upper roller 22 of the first wire roller group. After looping around the upper part of the upper roller, it is transported to the downstream of the first wire roller group. The upper roller 22 of the first wire roller group is located obliquely above the lower roller.

[0038] As Figure 3 shown, the second wire roller group is located below the first wire roller group. The entry point of the second yarn 311 into the lower roller 31 of the second wire roller group is also located obliquely below the yarn guide hole of the top yarn guide plate 1, and the angle formed by the second yarn 311 with the vertical direction is greater than the angle formed by the first yarn with the vertical direction. The angle β between the connecting line of the yarn entry point of the lower roller 31 of the second wire roller group and the hole center of the yarn collecting plate 4 and the vertical direction is greater than the angle α between the connecting line of the yarn entry point of the lower roller of the first wire roller group and the hole center of the yarn collecting plate 4 and the vertical direction. The upper roller 32 of the second wire roller group is also located obliquely above the lower roller. In this embodiment, the two groups of wire rollers share one motor, and the motor drives each group of wire rollers to rotate through two different gear transmission mechanisms, so that the speed of each group of wire rollers can be set independently, respectively used for driving yarns with different mechanical properties.

[0039] The yarn collecting plate 4, the first fixed yarn guiding plate 5, the adjustable yarn guiding plate 6, the second fixed yarn guiding plate 7, and the third fixed yarn guiding plate 8 are all inclined. Among them, the yarn collecting plate 4 is used to concentrate every two yarns of different materials into one strand. A row of yarn collecting holes is arranged horizontally along the yarn collecting plate 4, and two adjacent yarns enter one yarn collecting hole, as Figure 4 shown. As Figure 1As shown, in this embodiment, the yarn collecting plate 4 is arranged close to the upper roller 32 of the second wire roller group. The adjustable yarn guiding plate 6 is installed on the adjusting rod, and the position of the adjusting rod is adjustable in the vertical direction, so as to drive the adjustable yarn guiding plate 6 to move. In actual production, the position of the adjustable yarn guiding plate 6 is adjusted according to the required length of the grass filaments. For the yarn feeding device in this embodiment, when the length of the prepared grass filaments becomes longer, the adjustable yarn guiding plate 6 is adjusted downward. The third fixed yarn guiding plate 8 described in this embodiment is arranged close to the tufting needle 12 of the tufting device. As Figure 1 shown, the yarn guiding hole of the third fixed yarn guiding plate 8 is located obliquely above the puncturing end of the tufting needle, and the yarn coming out of the third fixed yarn guiding plate 8 enters the puncturing end of the tufting needle. A fixed yarn guiding plate bracket 11 with a push rod foot 10 is arranged above the tufting needle 12, and the second fixed yarn guiding plate 7 and the third fixed yarn guiding plate 8 are fixedly installed on the fixed yarn guiding plate bracket 11. The axes of the corresponding holes on the yarn collecting plate 4, the first fixed yarn guiding plate 5, the adjustable yarn guiding plate 6, the second fixed yarn guiding plate 7 and the third fixed yarn guiding plate 8 are located in the same vertical plane, that is, the axis of a yarn collecting hole and the axes of the yarn guiding holes on the first fixed yarn guiding plate 5, the adjustable yarn guiding plate 6, the second fixed yarn guiding plate 7 and the third fixed yarn guiding plate 8 passed by a strand of yarn passing through this yarn collecting hole are in a vertical plane.

[0040] The working process of the tufting device yarn feeding device in this embodiment is as follows:

[0041] Yarns of two materials arranged in a fixed order pass through the yarn guiding holes of the top yarn guiding plate 1. Among them, the first yarn reaches the first wire roller group, and the second wire reaches the second wire roller group. The two groups of wire rollers set their respective rotation speeds according to the yarn characteristics. The yarns coming out of the wire roller group pass through the yarn collecting plate 4 and the first fixed yarn guiding plate 5 and then reach the adjustable yarn guiding plate 6. After passing through the second fixed yarn guiding plate 7 and the third fixed yarn guiding plate 8, they reach the tufting needle 12. The tufting needle 12 moves up and down and continuously passes through the threading plate 9, so that the yarns continuously penetrate the base fabric advancing in the tufting device. After being hooked out and cut by the tufting device, the lawn is prepared. Embodiment 2

[0042] This embodiment provides a tufting device yarn feeding device, and the yarn feeding device is as Figure 3 shown, including a top yarn guiding plate 1, multiple groups of wire rollers, a yarn collecting plate 4, a first fixed yarn guiding plate 5, an adjustable yarn guiding plate 6, a second fixed yarn guiding plate 7 and a third fixed yarn guiding plate 8 which are installed on the tufting device main body and are distributed in sequence from upstream to downstream along the yarn transmission path.

[0043] As Figure 1As shown, the top yarn guide plate 1 in this embodiment is the same as that in Embodiment 1, and there are the first yarn, the second yarn 311, and the third yarn 331 made of three materials arranged in a fixed order.

[0044] In this embodiment, three groups of wire guide rollers are arranged in cooperation with two yarns, namely the first wire guide roller group, the second wire guide roller group, and the third wire guide roller group. The three groups of wire guide rollers are in a parallel relationship. The first yarn coming down from the top yarn guide plate 1 is conveyed to the first wire guide roller group, the second yarn 311 is conveyed to the second wire guide roller group, and the third yarn 331 is conveyed to the third wire guide roller group. Similar to Embodiment 1, in this embodiment, the lower roller among the wire guide rollers of the first wire guide roller group is located below the top yarn guide plate 1, and the entry point of the first yarn into the lower roller 21 of the first wire guide roller group is located obliquely below the yarn guide hole of the top yarn guide plate 1, so that the first yarn forms an angle with the vertical direction. The lower part of the first yarn loops under the lower roller and then reaches the upper part of the upper roller. After looping around the upper part of the upper roller, it moves to the downstream of the first wire guide roller group. The second wire guide roller group is located below the first wire guide roller group, and the third wire guide roller group is located below the second wire guide roller group, including the lower roller 33 of the third wire guide roller group and the upper roller 34 of the third wire guide roller group as shown in Figure 5 As shown. In this embodiment, the angle formed by the second yarn 311 with the vertical direction is greater than the angle formed by the first yarn with the vertical direction, and the angle formed by the third yarn 331 with the vertical direction is greater than the angle formed by the second yarn 311 with the vertical direction, that is, the angle between the connecting line of the yarn entry points of the lower rollers of the three groups of wire guide rollers arranged from top to bottom and the center of the hole of the yarn collecting plate 4 and the vertical direction gradually increases. The three groups of wire guide rollers in this embodiment share one motor, and the motor drives each group of wire guide rollers to rotate through three different gear transmission mechanisms, so that the speed of each group of wire guide rollers can be set independently, and they are respectively used to drive yarns with different mechanical properties.

[0045] The yarn collecting plate 4, the first fixed yarn guiding plate 5, the adjustable yarn guiding plate 6, the second fixed yarn guiding plate 7, and the third fixed yarn guiding plate 8 in this embodiment are the same as those in Embodiment 1. However, as a preferred implementation manner, a group of driving rollers is further arranged between the first fixed yarn guide plate and the adjustable yarn guiding plate 6. The two rollers in the group of driving rollers are arranged close to each other, and there is a gap between the two driving rollers. The yarn passing through the yarn collecting plate 4 passes between the two rollers, and the rotation of the two rollers is used to realize the transmission of the yarn. As a preferred implementation manner, the diameter of the roller is smaller than the diameter of the wire guide roller.

[0046] The working process of the yarn feeding device of the tufting equipment in this embodiment is as follows:

[0047] Yarns of two materials arranged in a fixed order pass through the yarn guiding holes of the top yarn guiding plate 1, wherein the first yarn reaches the first wire roller group, the second yarn 311 reaches the second wire roller group, and the third yarn 331 reaches the third wire roller group. The three groups of wire rollers are respectively set with their own rotation speeds according to the yarn characteristics. After the yarns coming out of the wire roller groups pass through the yarn collecting plate 4 and the first fixed yarn guiding plate 5, they reach the adjustable yarn guiding plate 6 through the re-conveyance of the driving roller, and then reach the tufting needle 12 after passing through the second fixed yarn guiding plate 7 and the third fixed yarn guiding plate 8. The tufting needle 12 moves up and down continuously through the thread passing plate 9, so that the yarns continuously penetrate the base fabric moving in the tufting device, and the lawn is prepared after being hooked out and cut by the tufting device.

[0048] As described above, it is only a preferred specific embodiment of the present invention, but the protection scope of this application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

1. A yarn feeding device for a tufting device, characterized in that, Including: A top yarn guide plate and multiple groups of yarn guiding rollers. The multiple groups of yarn guiding rollers are located downstream of the top yarn guide plate. Each group of yarn guiding rollers includes a lower roller and an upper roller, and each group of yarn guiding rollers is connected with an independent power transmission mechanism; Downstream of the multiple groups of yarn guiding rollers, there are also arranged in sequence: A yarn collecting plate; A first fixed yarn guiding plate; An adjustable yarn guiding plate, the position of which is adjustable in the vertical direction; A second fixed yarn guiding plate and a third fixed yarn guiding plate. The yarn guiding hole of the third fixed yarn guiding plate is located obliquely above the tufting needle piercing end of the tufting device.

2. The tufting device yarn feeding device according to claim 1, characterized in that, The lower roller in each group of yarn guiding rollers is located upstream of the upper roller, and the upper roller in each group of yarn guiding rollers is located obliquely above the lower roller in the same group.

3. The tufting device yarn feeding device according to claim 2, characterized in that, The multiple groups of yarn guiding rollers are arranged vertically.

4. The tufting device yarn feeding device according to claim 3, characterized in that, The included angle between the connecting line of the yarn entry points of the lower rollers of the multiple groups of yarn guiding rollers arranged from top to bottom and the hole center of the yarn collecting plate and the vertical direction gradually increases.

5. The tufting device yarn feeding device according to claim 1 or 2 or 3 or 4, characterized in that, The corresponding hole axes on the yarn collecting plate, the first fixed yarn guiding plate, the adjustable yarn guiding plate, the second fixed yarn guiding plate and the third fixed yarn guiding plate are located in the same vertical plane.

6. The tufting device yarn feeding device according to claim 5, characterized in that, A driving roller is also arranged between the first fixed yarn guiding plate and the adjustable yarn guiding plate.

7. The tufting device yarn feeding device according to claim 6, characterized in that, There are two driving rollers, and a gap is arranged between the two driving rollers.

8. The tufting device yarn feeding device according to claim 7, characterized in that, The diameter of the driving roller is smaller than the diameter of the rollers in the yarn guiding rollers.

9. The tufting device yarn feeding device according to claim 8, characterized in that, A fixed yarn guiding plate bracket is arranged above the tufting needle, and the second fixed yarn guiding plate and the third fixed yarn guiding plate are fixedly installed on the fixed yarn guiding plate bracket.

10. The tufting device yarn feeding device according to claim 9, characterized in that, The multiple groups of yarn guiding rollers share one driving motor, and the driving motor is respectively connected with the multiple groups of yarn guiding rollers through multiple sets of gear transmission mechanisms.

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