Auxiliary feeding device of circular knitting machine

Abstract

The utility model relates to an auxiliary feeding device, and provides the auxiliary feeding device of the circular knitting machine, which comprises a mounting seat, a thread guide seat, a thread guide tube, a tool I and the like, a yarn guiding seat is fixedly arranged on the upper portion of the mounting seat, a yarn guiding tube is vertically arranged on the yarn guiding seat, a first tool is fixedly mounted on the lower portion of the yarn guiding seat, a notch allowing yarn to penetrate through is formed in the upper portion of the first tool, and the lower portion of the first tool is in a big-end-up conical barrel shape. According to the utility model, the cone-shaped tool is arranged, the yarns conveyed by the yarns which are deformed by pulling are wound on the cone-shaped tool, the tension of the yarns can be gradually reduced from the wide end to the narrow end of the cone in the winding process of the yarns through the shape of the cone-shaped tool, and the gradually-changed tension distribution is beneficial to gradually releasing the internal stress of the yarns; meanwhile, when the yarn is wound outside the conical tool, the yarn can be naturally bent instead of being forcibly straightened, the natural bending is beneficial to rearrangement of molecular structures in the yarn, and internal stress generated by stretching is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of auxiliary feeding devices, in particular to a kind of auxiliary feeding devices of circular knitting machine. BACKGROUND

[0002] Circular knitting machine is important production equipment in knitting industry, and is widely used in producing various knitted fabrics, such as T-shirt, underwear, sportswear, etc. Its core function is to weave knitting needle into loop, and then connect these loops into knitted fabric. In this process, feeding device plays a crucial role, which is responsible for stable and uniform yarn delivery to the knitting area, ensuring the continuity of the knitting process and the quality of the product.

[0003] Most of the existing circular knitting machines use positive yarn feeding device, which drives the yarn storage wheel to rotate for synchronous yarn storage and feeding through toothed belt. However, during the feeding process, the yarn feeding device needs to be specially designed to ensure that the yarn can be fed into the knitting system uniformly and stably. However, the existing yarn feeding device often has problems such as insufficient friction of the yarn feeding roller or poor rotation of the pulley when handling yarn, resulting in inconsistent yarn feeding tension, which affects the uniformity of loop size and further affects the stability of yarn feeding amount, which may cause the yarn to be transported to the knitting area at different draft ratios, resulting in uneven yarn shrinkage after the fabric is taken off, and horizontal bar defects on the fabric surface. SUMMARY

[0004] In order to overcome the shortcomings of the existing yarn feeding device when handling yarn, such as insufficient friction of the yarn feeding roller or poor rotation of the pulley, resulting in inconsistent yarn feeding tension, which affects the uniformity of loop size and further affects the stability of yarn feeding amount, which may cause the yarn to be transported to the knitting area at different draft ratios, resulting in uneven yarn shrinkage after the fabric is taken off, and horizontal bar defects on the fabric surface, the purpose is to provide a kind of auxiliary feeding device for circular knitting machine, which can release the deformation stress of yarn after being pulled to a certain extent when feeding yarn.

[0005] The technical solution is as follows: An auxiliary feeding device for a circular knitting machine includes a mounting base, a yarn guide seat, a guide tube, a first fixture, a fixing block, a first spring, a second fixture, a limiting frame, a threading spool, and a guide wheel. A yarn guide seat is fixedly mounted on the upper part of the mounting base, and a guide tube is vertically mounted on the yarn guide seat. A first fixture is fixedly mounted on the lower part of the yarn guide seat. The upper part of the first fixture has a notch allowing yarn to pass through. The lower part of the first fixture is a conical barrel shape, wider at the top and narrower at the bottom. A second fixture is slidably mounted on the lower part of the yarn guide seat, enclosing the conical barrel-shaped portion of the first fixture inside. When the second fixture slides downwards, the lower part of the first fixture is exposed and not obstructed. A first spring is mounted on the upper part of the second fixture, with its other end connected to the yarn guide seat. There is a gap between the inner walls of the first and second fixtures. The conical barrel-shaped portion of the lower fixture is used to wind the yarn, spirally winding the yarn around the wider-than-narrower conical barrel. The first fixture has a notch on one side of its lower part to allow yarn to pass through, and a fixing block at the lower part of the second fixture. The fixing block and the first fixture are concentric. The second fixture has a limiting frame at the lower part, which consists of a connecting rod and at least two limiting rings. The limiting rings are arranged vertically and surround the fixing block. There is an annular gap between the limiting rings and the fixing block for the yarn to pass through. The mounting base has a threading tube with a through hole for threading. The threading tube and the fixing block are concentric. The yarn passing through the notch in the second fixture will pass downward through the threading tube. The lower part of the mounting base has two parallel guide wheels that rotate and are located directly below the threading tube. The yarn passing downward from the threading tube will pass between the two guide wheels and finally be introduced into the knitting equipment.

[0006] As a further preferred option, the notch edges of both tooling one and tooling two are processed using a chamfering process, and all areas of the surfaces of tooling one and tooling two are polished smooth.

[0007] As a further preferred embodiment, it also includes heating blocks, with heating blocks spaced apart on the outer side of the fixing block.

[0008] As a further preferred embodiment, it also includes a motor and a swing frame. The motor is vertically mounted on the lower part of the fixed block, and the swing frame is connected to the output shaft of the motor. The end of the swing frame is provided with a lead wire ring.

[0009] As a further preferred embodiment, it also includes a detector, a probe, and a threading block. The detector is located on the mounting base near the lower part of the threading spool, and the detector is equipped with a probe. The threading block is located below the mounting base, and the threading block has a circular hole concentric with the through hole on the threading spool. The probe is used to detect the yarn tension in the area between the threading spool and the threading block as the yarn passes through the threading spool.

[0010] As a further preferred, it also includes a power wheel, a support, an auxiliary wheel and a spring two, the power wheel is arranged on the upper portion of the lead seat, the power wheel is composed of a power piece and a roller, the roller is driven to rotate by the power piece, the support is slidably arranged on the upper portion of the lead seat, the support is in the shape of "L", the support is rotatably provided with the auxiliary wheel at one end, the auxiliary wheel is arranged side by side with the roller of the power wheel, the support is provided with the spring two at the other end, the two ends of the spring two are connected with the lead seat and the support respectively, the auxiliary wheel on the support and the roller of the power wheel are kept in contact state through the spring two, and the yarn passes between the auxiliary wheel and the roller of the power wheel.

[0011] The utility model has the following advantages:

[0012] 1. The yarn transmission yarn that is deformed by being pulled is wound on the conical tool, the tension of the yarn gradually decreases from the wide end to the narrow end during winding, the gradually changing tension distribution helps to gradually release the stress inside the yarn, and the yarn is naturally bent when wound on the conical tool, instead of being forcibly straightened, which helps to rearrange the molecular structure inside the yarn and reduce internal stress caused by stretching.

[0013] 2. The power wheel and the auxiliary wheel are arranged at the lead-in position of the lead seat, the yarn transmission is assisted by external yarn transmission equipment, the transmission speed of the power wheel is controlled to match the subsequent knitting equipment, and the yarn stretching caused by the difference in yarn transmission between the knitting machine processing lead-in and the transmission device is reduced.

[0014] 3. The tension detector is arranged to detect the tension of the yarn before entering the knitting machine, so that the related equipment can be found and coordinated in time, the abnormal tension of the yarn can be adjusted, and production failures caused by uneven tension can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a three-dimensional structure schematic view of the utility model.

[0016] Figure 2 It is a three-dimensional structure schematic view of the spring one, the detector and the probe of the utility model.

[0017] Figure 3 It is a disassembly view of the tool one and the tool two of the utility model.

[0018] Figure 4 It is a three-dimensional structure schematic view of the auxiliary feeding device of the utility model after installation.

[0019] Wherein: 1 - mounting seat, 2 - lead seat, 3 - wire tube, 4 - tool one, 41 - fixed block, 42 - spring one, 43 - tool two, 44 - limit frame, 5 - threading drum, 6 - wire wheel, 7 - heating block, 8 - motor, 81 - swing frame, 9 - detector, 91 - probe, 92 - threading block, 10 - power wheel, 101 - support, 1011 - auxiliary wheel, 102 - spring two, 100 - mounting frame. DETAILED DESCRIPTION

[0020] The utility model will be further explained in combination with specific embodiments, and it needs to be explained that unless there are explicit provisions and limitations, terms such as setting, installation, connection, connection should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through intermediate medium, can be the intercommunication of two elements. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to specific circumstances.

[0021] Embodiment 1: a kind of auxiliary feed device of auxiliary circular knitting machine, as shown in Figures 1-4 Figure, including mounting seat 1, lead seat 2, wire tube 3, tool one 4, fixed block 41, spring one 42, tool two 43, limit frame 44, threading drum 5 and wire wheel 6, the upper portion of mounting seat 1 is fixedly provided with lead seat 2, lead seat 2 is vertically provided with wire tube 3, the role of wire tube 3 is to ensure that yarn is stably guided into the device from the top, prevent yarn from deviating or winding during the guiding process, tool one 4 is fixedly installed in the lower portion of lead seat 2, the upper portion of tool one 4 is provided with a gap allowing yarn to pass through, facilitating the entry of yarn into the interior of tool one 4 from the top, and the lower portion of tool one 4 is designed in a conical barrel shape.

[0022] Tool two 43 is slidably provided in the lower portion of lead seat 2, tool two 43 wraps the lower conical barrel portion of tool one 4, when yarn needs to be laid, tool two 43 can be slid downward, allowing the lower portion of tool one 4 to be exposed and not shielded, thereby allowing yarn to be laid in the lower portion of tool one 4 according to the predetermined requirements, spring one 42 is provided in the upper portion of tool two 43, the other end of spring one 42 is connected with lead seat 2, ensuring that tool two 43 remains in the initial position when not subjected to external force, preventing accidental shedding of yarn, there is a gap between the inner walls of tool one 4 and tool two 43, ensuring that yarn will not be excessively squeezed during winding, ensuring smooth passage of yarn, the lower conical barrel portion of tool one 4 is used for winding yarn, winding yarn in a spiral shape on the conical barrel portion with a large upper portion and a small lower portion, this winding method can effectively release the stress generated during the pulling process of yarn, improving the stability and strength of yarn.

[0023] The lower part of the tool two 43 is provided with a gap allowing the yarn to pass through, ensuring that the yarn can smoothly pass from the inside of the tool two 43 to the next link. The lower part of the tool one 4 is provided with a fixing block 41, which is in concentric position with the tool one 4, for supporting and positioning the yarn, ensuring the stability and straightness of the yarn during transmission. The lower part of the tool two 43 is provided with a limiting frame 44, which is composed of a connecting rod and no less than two limiting rings. The limiting rings are vertically arranged above and below and surround the periphery of the fixing block 41. There is an annular gap between the limiting ring and the fixing block 41 for passing through the yarn, ensuring the stability of the yarn during transmission and preventing the yarn from deviating or winding.

[0024] A threading cylinder 5 is provided on the mounting seat 1, which is internally provided with a through hole for threading. The threading cylinder 5 is in concentric position with the fixing block 41. The yarn passing through the gap of the tool two 43 will pass downward through the threading cylinder 5, ensuring that the transmission path of the yarn is more accurate and stable. The lower part of the mounting seat 1 is rotatably provided with two parallel arranged wire guide wheels 6, which are located directly below the threading cylinder 5. The yarn passing downward from the threading cylinder 5 will pass between the two wire guide wheels 6 and finally be introduced into the knitting equipment. The design of the wire guide wheel 6 can reduce the friction of the yarn during transmission, ensuring that the yarn enters the knitting equipment smoothly, improving production efficiency and product quality.

[0025] To match the processing of the circular knitting machine, multiple sets of auxiliary equipment should be provided and installed on the same circular mounting frame 100. Without affecting the operation of other related equipment, the auxiliary lead work is synchronized. The yarn that is deformed by pulling is transmitted around the conical tool provided by the tool one 4. The shape of the conical tool makes the tension of the yarn gradually decrease from the wide end to the narrow end during the winding process. This gradual tension distribution helps to gradually release the stress inside the yarn. At the same time, the conical tool allows the yarn to naturally bend instead of being forcibly straightened. This natural bending helps to rearrange the molecular structure inside the yarn, reducing the internal stress caused by stretching. The tool two 43 controls the release and wrapping of the yarn during this process to prevent accidental falling of the yarn. The edges of the tool one 4 and the tool two 43 are processed using the chamfering process, and the surfaces of the tool one 4 and the tool two 43 are polished smooth.

[0026] In example 2, based on example 1, as shown in Figure 1 and Figure 3 a heating block 7 is also included. The heating block 7 is arranged at intervals outside the fixing block 41. This design aims to moderately heat the yarn inside the fixing block 41 and the limiting frame 44 through the heating block 7 to improve the softness and plasticity of the yarn, making it smoother through the subsequent components, and helping to reduce tension fluctuations caused by cold hardening or entanglement.

[0027] As shown in Figure 1 and Figure 3 , further comprising a motor 8 and a swing frame 81, the lower part of the fixed block 41 is vertically provided with the motor 8, the output shaft of the motor 8 faces downward, and the output shaft is connected with the swing frame 81, the end of the swing frame 81 is provided with a lead ring, the yarn that passes out of the limiting frame downward will first pass through the lead ring of the swing frame 81, and the swing frame 81 is driven by the motor 8 to make periodic swing, driving the yarn in the lead ring to vibrate slightly, which helps to eliminate the static accumulation of the yarn in the transmission process, and at the same time promotes the yarn to be more evenly distributed, reducing the risk of yarn entanglement or uneven tension between the limiting frame 44 and the fixed block 41.

[0028] Among them, in order to detect the tension of the yarn during transmission, as shown in Figures 1-2 , further comprising a detector 9, a probe 91 and a threading block 92, the detector 9 is arranged on the installation seat 1 below the position close to the threading cylinder 5, and the probe 91 is arranged on the detector 9. The probe can be adjusted in position, and the threading block 92 is arranged below the installation seat 1, and the threading block 92 is provided with a circular hole concentric with the through hole of the threading cylinder 5. Among them, the yarn passing through the threading cylinder 5 is detected by the probe 91 to detect the tension of the yarn in the area between the threading cylinder 5 and the threading block 92. By setting the tension detector 9, the tension of the yarn before entering the knitting machine can be detected, so that the related equipment can be found and coordinated in time, and the abnormal situation of the yarn tension can be adjusted to avoid production failure caused by uneven tension.

[0029] In a more preferred embodiment: as shown in Figure 1 , further comprising a power wheel 10; the upper part of the lead seat 2 is provided with the power wheel 10, the power wheel 10 is composed of a power piece and a roller, the roller is driven to rotate by the power piece to provide power for the transmission of the yarn, the upper part of the lead seat 2 is slidably provided with a support 101, the support 101 is in the shape of "L" as a whole, one end of the support 101 is rotatably provided with an auxiliary wheel 1011, and the auxiliary wheel 1011 is arranged side by side with the roller of the power wheel 10. The other end of the support 101 is provided with a spring 102, and the two ends of the spring 102 are connected with the lead seat 2 and the support 101 respectively. Through the action of the spring 102, the auxiliary wheel 1011 on the support 101 keeps close contact with the roller of the power wheel 10. The yarn will pass between the auxiliary wheel 1011 and the roller of the power wheel 10, and the stable transmission is realized through the friction force of the two.

[0030] The design sets the power wheel 10 and the auxiliary wheel 1011 at the lead-in position of the lead seat 2, and the auxiliary external transmission yarn equipment is used for yarn transmission, and the transmission speed of the power wheel 10 can be accurately controlled to match the subsequent knitting equipment.

[0031] The auxiliary wheel 1011 is always kept in contact with the roller of the power wheel 10 by the action of the spring 102, and provides the necessary friction force. This design ensures that the yarn has stable tension during transmission, preventing the yarn from loosening or breaking before entering the knitting equipment. The speed of the power wheel 10 can be adjusted according to the requirements of the knitting equipment. By controlling the transmission speed of the power wheel 10, the speed of the yarn transmission is matched with the feeding speed of the knitting equipment. This speed matching reduces the yarn transmission gap between the knitting machine processing feeding and transmission device, avoiding the quality problems caused by the stretching of the yarn.

[0032] The technical principles of the embodiments of the present application are described above in combination with specific examples. These descriptions are only to explain the principles of the embodiments of the present application, and cannot be interpreted in any way as a limitation on the protection scope of the embodiments of the present application. Based on the explanations here, those skilled in the art can think of other specific embodiments of the embodiments of the present application without creative labor, and these ways will fall within the protection scope of the embodiments of the present application.

Claims

1. A kind of auxiliary feeding device of circular knitting machine, comprising installation seat (1) and lead seat (2), the upper part of installation seat (1) is fixed with lead seat (2);It also includes wire guide tube (3), tool one (4), fixed block (41), spring one (42), tool two (43), limiting frame (44), threading drum (5) and wire guide wheel (6), lead seat (2) vertically has wire guide tube (3), lead seat (2) lower part is fixedly installed with tool one (4), the upper part of tool one (4) is provided with gap allowing yarn to pass through, the lower part of tool one (4) is large at top and small at bottom in the shape of a cone barrel, lead seat (2) lower part is slidably provided with tool two (43), tool two (43) internally wraps the lower part of tool one (4) in the shape of a cone barrel, tool two (43) is slid downward, the lower part of tool one (4) will leak out, not be shielded, spring one (42) is arranged on the upper part of tool two (43), the other end of spring one (42) is connected with lead seat (2), and there is a gap between the inner wall of tool one (4) and tool two (43), the lower part of tool one (4) in the shape of a cone barrel is used for winding yarn, and the yarn is spirally wound on the lower part of tool one (4) in the shape of a cone barrel to release a certain tensile stress, the lower part of tool two (43) is provided with gap allowing yarn to pass through, the lower part of tool one (4) is provided with fixed block (41), fixed block (41) and tool one (4) are in concentric position, the lower part of tool two (43) is provided with limiting frame (44), limiting frame (44) is composed of a connecting rod and not less than two limiting rings, limiting rings are vertically arranged and surround fixed block (41) periphery, and there is a ring gap between limiting rings and fixed block (41) for passing through yarn, threading drum (5) is arranged on installation seat (1), and the inner part of threading drum (5) is provided with through hole for threading, and threading drum (5) and fixed block (41) are in concentric position, the yarn passing through the gap of tool two (43) will pass through threading drum (5), and two parallel wire guide wheels (6) are rotatably arranged on the lower part of installation seat (1), wire guide wheels (6) are located just below the position of threading drum (5), the yarn passing through threading drum (5) will pass through the gap between two wire guide wheels (6), and finally the yarn is introduced into knitting equipment. characterized in that The edges of the gaps of tool one (4) and tool two (43) are machined by chamfering process, and the surfaces of tool one (4) and tool two (43) are polished smooth.

2. A supplementary feeding device for a knitting machine according to claim 1, characterized in that: It also includes heating block (7), and heating block (7) is arranged on the outer side of fixed block (41) at intervals.

3. A supplementary feed device for a knitting machine according to claim 2, characterized in that: It also includes motor (8) and swing frame (81), and motor (8) is vertically arranged on the lower part of fixed block (41), swing frame (81) is connected to the output shaft of motor (8), and lead ring is arranged on the end of swing frame (81).

4. A supplementary feed device for a knitting machine according to claim 3, characterized in that: ​ 5. A supplementary feed device for a knitting machine according to claim 4, characterized in that: Also include detection instrument (9), probe (91) and threading block (92), the installation seat (1) is equipped with detection instrument (9) near the lower position of threading drum (5), detection instrument (9) is equipped with probe (91), the installation seat (1) is equipped with threading block (92) below, threading block (92) is equipped with the circular hole concentric with the through hole on threading drum (5), wherein, the yarn from threading drum (5) passes through probe (91) and is used to detect the yarn tension in the area of threading drum (5) and threading block (92).

6. A supplementary feed device for a knitting machine as claimed in claim 5, characterized in that: Also include power wheel (10), support (101), auxiliary wheel (1011) and spring two (102), the upper part of lead seat (2) is equipped with power wheel (10), power wheel (10) is composed of a power piece and a roller, the roller is rotated by power piece, the upper part of lead seat (2) is equipped with support (101) slidingly, support (101) is overall "L” shape, one end of support (101) is equipped with auxiliary wheel (1011) rotatably, auxiliary wheel (1011) is arranged side by side with the roller of power wheel (10), the other end of support (101) is equipped with spring two (102), both ends of spring two (102) are connected with lead seat (2) and support (101) respectively, through spring two (102), auxiliary wheel (1011) on support (101) and the roller of power wheel (10) keep the state of contact, the yarn passes between auxiliary wheel (1011) and the roller of power wheel (10).

Images