Knitting mechanism of circular knitting machine and circular knitting machine

Abstract

The utility model provides a knitting mechanism of a circular knitting machine and the circular knitting machine, the knitting mechanism comprises a Haff plate and a needle cylinder assembly, the Haff plate is located above the needle cylinder assembly, and the Haff plate and the needle cylinder assembly rotate concentrically and synchronously; a guide seat is arranged at the bottom of the Haff plate; the needle cylinder assembly comprises a sinker disc and a needle cylinder which are sequentially arranged from top to bottom; a first cavity and a second cavity are formed in the sinker disc and the needle cylinder respectively, the first cavity and the second cavity are connected in a sealed mode to form a material cavity, and an opening communicated with the material cavity is formed in the upper portion of the sinker disc; at least part of the guide seat is located in the material cavity through the opening, the part, located in the cavity, of the guide seat corresponds to the shape of the cavity, and a suction channel is formed by the part, located in the cavity, of the guide seat and the inner wall of the material cavity, so that fabric enters the material cavity through the suction channel; by the adoption of the technical scheme, under the same negative pressure supply condition, sucked air flows through the suction channel in an accelerated mode, then more sufficient traction force is provided for fabric, and the fabric can enter the material cavity through the suction channel more easily.

Description

Technical Field

[0001] The utility model relates to the technical field of knitting, in particular to a knitting mechanism of a circular knitting machine and the circular knitting machine. Background Art

[0002] Circular knitting machines are widely used in the textile industry, primarily for weaving a variety of fabrics, including outerwear, underwear, sportswear, and socks. The knitted fabrics they produce are comfortable, form-fitting, and fashionable, making them highly sought after by consumers. A circular knitting machine primarily consists of a yarn feed mechanism, a weaving mechanism, a transmission mechanism, an electronic control mechanism, and auxiliary mechanisms. The weaving mechanism is the core of the circular knitting machine and includes a half disk and a needle cylinder assembly. The half disk is located above the needle cylinder assembly and rotates concentrically with it. The half disk is equipped with half needles, which are involved in the starting and tying of the knitting needles. During the knitting process, the needle cylinder assembly rotates continuously, driving the needles up and down, forming the loops through the process of cast-off, yarn laying, and loop formation, completing the fabric weaving process. Simultaneously, the suction force generated by the suction fan captures the fabric being woven in the weaving mechanism and draws it out of the needle cylinder assembly's material chamber, ensuring smooth knitting.

[0003] However, the existing half disk lacks a guide seat at the bottom (see CN201220138487.6, a seamless underwear knitting machine). During the weaving process, due to the light and thin fabrics' small weight, the suction force generated by the suction fan cannot provide sufficient pulling force on the fabrics, and the fabrics are easy to float out from the gap between the sinker disk and the half disk, arch at the opening of the sinker disk, and accumulate on the periphery of the sinker disk; in addition, some special fabrics have a folding-like structure, or high-elastic fabrics experience excessive shrinkage during weaving, or the yarn material of the woven fabric is relatively hard, etc., which are not easily brought into the material cavity by suction, which will cause the arching problem at the opening of the sinker disk. Because the shuttle that has not been used but has not been put into work during the weaving process will be in standby mode, the yarn will be pulled around the Haver disk during the operation of the machine. When the fabric is arched at the opening of the Sink disk, the yarn will be stuck in the arched area of ​​the fabric, which will hinder the action of the thread take-up rod to tighten the yarn. Longer yarn will be pulled out in the arched area, and when the shuttle works, a circular winding will be formed, causing problems such as poor fabric appearance. Utility Model Content

[0004] Therefore, it is necessary to provide a knitting mechanism of a circular knitting machine to solve the problem that the fabric is not easily brought into the material cavity by suction.

[0005] To achieve the above-mentioned purpose, the utility model provides a knitting mechanism of a circular knitting machine, which includes a half disk and a needle cylinder assembly, wherein the half disk is located above the needle cylinder assembly and rotates concentrically and synchronously with the needle cylinder assembly; a guide seat is provided at the bottom of the half disk; the needle cylinder assembly includes a score disk and a needle cylinder arranged in sequence from top to bottom; the score disk and the needle cylinder respectively have a first cavity and a second cavity, the first cavity and the second cavity are sealed and connected to form a material cavity, and the upper part of the score disk has an opening connected to the material cavity; at least a part of the guide seat is located in the material cavity through the opening, and the part of the guide seat located in the cavity is arranged corresponding to the shape of the cavity, and forms a suction channel with the inner wall of the material cavity, so that the fabric enters the material cavity through the suction channel.

[0006] Furthermore, the guide seat is in the shape of an inverted truncated cone, and the outer wall of the guide seat and the inner wall of the material cavity have a first angle, and the first angle is 0°-15°.

[0007] Furthermore, the cross-sectional spacing of the suction channel is 3mm-7mm.

[0008] Furthermore, it also includes a guide plate, the free end of the guide plate is located above the opening and at the suction channel, so that the free end of the guide plate can mortgage the woven fabric and enter the cavity through the suction channel.

[0009] Furthermore, the guide plate is bent at least once on one side close to the free end to form a bent portion, so that the free end of the guide plate is supported by the woven fabric in a non-horizontal direction.

[0010] Furthermore, the free end of the guide plate forms a second angle with the horizontal direction, and the second angle is 45°-60°.

[0011] Furthermore, it also includes a workbench, which is sleeved on the outer circumference of the syringe; the fixed end of the guide plate is connected to the workbench.

[0012] Furthermore, a material pipe is provided through the first cavity and the second cavity, so that the first cavity and the second cavity are sealed and connected to form a material cavity.

[0013] A circular knitting machine is provided, which uses the knitting mechanism of the circular knitting machine.

[0014] Different from the existing technology, the above technical solution sets a guide seat at the bottom of the half disk, and uses the "narrow tube effect" to reduce the suction channel in the material cavity. Since the suction channel is effectively "narrowed", under the same negative pressure supply conditions, the suction can act more concentratedly on the suction channel, so that the suction air is accelerated to flow through the suction channel, thereby increasing the suction air flow rate; thereby providing more sufficient traction force to the fabric, making it easier for the fabric to enter the material cavity through the suction channel; preventing the fabric from floating out of the gap between the half disk and the half disk, arching at the opening of the sinker disk, and accumulating on the periphery of the sinker disk, causing problems such as poor appearance of the fabric; reducing the downtime adjustment time in the entire production process, and effectively improving the overall production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the separation structure of the half disc and needle cylinder assembly of the knitting mechanism of the circular knitting machine according to the embodiment;

[0016] Figure 2 Schematic diagram of the structure of the knitting mechanism of the circular knitting machine according to the embodiment;

[0017] Figure 3 for Figure 2 A in the middle is an enlarged schematic diagram;

[0018] Figure 4 for Figure 2 The enlarged schematic diagram of point B in the middle;

[0019] Figure 5 Schematic diagram of the structure of the guide plate described in the embodiment.

[0020] Description of reference numerals:

[0021] 10. Haff Pan;

[0022] 101. Guide seat;

[0023] 20. Shengke Plate;

[0024] 30. Syringe;

[0025] 40. Workbench;

[0026] 50. Guide plate;

[0027] 501, free end; 502, fixed end; 503, bending portion;

[0028] 60. Suction channel;

[0029] α, first angle;

[0030] β, the second angle;

[0031] D. Cross-sectional spacing of suction channels. DETAILED DESCRIPTION

[0032] In order to explain the technical content, structural features, achieved objectives and effects of the technical solution in detail, the following is a detailed description in conjunction with specific embodiments and accompanying drawings.

[0033] References to "embodiments" herein mean that the specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the word "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the various technical features mentioned in the embodiments can be combined in any manner to form a corresponding implementable technical solution.

[0034] Unless otherwise defined, the technical terms used herein have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms herein is only for describing specific embodiments and is not intended to limit this application.

[0035] In the description of this application, the term "and / or" is used to describe a logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and both A and B exist. In addition, the character " / " in this document generally indicates that the objects before and after are in a logical "or" relationship.

[0036] In this application, terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, priority or sequence relationship between these entities or operations.

[0037] Without further limitations, in this application, the words "include", "comprise", "have" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those defined elements, but also other elements not explicitly listed, or elements inherent to such process, method or product.

[0038] Consistent with the understanding in the Patent Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceed" are understood to exclude the number itself; expressions such as "above," "below," and "within" are understood to include the number itself. In addition, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this manner, such as "multiple groups" and "multiple times," unless otherwise clearly and specifically limited.

[0039] In the description of the embodiments of the present application, the space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be understood as a limitation on the embodiments of the present application.

[0040] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms "installed", "connected", "connected", "fixed", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art of the present application, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0041] See also Figure 1-Figure 5 As shown, the utility model provides a knitting mechanism of a circular knitting machine, which provides a guide seat 101 at the bottom of the half disk 10 and utilizes the "narrow tube effect" to reduce the suction channel 60 in the material cavity. Since the suction channel 60 is effectively "narrowed", under the same negative pressure supply conditions, the suction can act more concentratedly on the suction channel 60, so that the suction air is accelerated to flow through the suction channel 60, thereby increasing the suction air flow rate; thereby providing more sufficient traction for the fabric, making it easier for the fabric to enter the material cavity through the suction channel 60; preventing the fabric from floating out of the gap between the sinker disk 20 and the half disk 10, arching at the opening of the sinker disk 20, and accumulating on the periphery of the sinker disk 20, causing problems such as poor appearance of the fabric; reducing the downtime adjustment time in the entire production process, and effectively improving the overall production efficiency.

[0042] See also Figure 1 and Figure 2 As shown, the following provides an embodiment of a knitting mechanism of a circular knitting machine of the present invention, which includes a half disk 10 and a needle cylinder 30 assembly, wherein the half disk 10 is located above the needle cylinder 30 assembly and rotates concentrically and synchronously with the needle cylinder 30 assembly; the bottom of the half disk 10 is provided with a guide seat 101; the needle cylinder 30 assembly includes a sinker disk 20 and a needle cylinder 30 arranged in sequence from top to bottom; the sinker disk 20 and the needle cylinder 30 respectively have a first cavity and a second cavity, the first cavity and the second cavity are sealed and connected to form a material cavity, and the upper part of the sinker disk 20 has an opening connected to the material cavity; the guide seat 101 is at least partially located in the material cavity through the opening, and the part of the guide seat 101 located in the cavity is arranged corresponding to the cavity shape, and forms a suction channel 60 with the inner wall of the material cavity, so that the fabric enters the material cavity through the suction channel 60.

[0043] The above-mentioned Shengke disk 20 is coaxially connected to the syringe 30 and rotates synchronously. The above-mentioned first cavity and second cavity can be coaxially arranged to enhance the compactness of the structure and the convenience of operation; of course, they can also be non-coaxial to adapt to specific application scenarios and process requirements. In some embodiments, the first cavity can be located in the middle of the Shengke disk 20, and the second cavity is located in the middle of the syringe 30. The first cavity and the second cavity can be coaxially arranged to optimize the transmission path and efficiency of the suction, which helps to increase the suction flow rate. There is no strict limitation on the inner diameters of the first cavity and the second cavity; they can be the same to facilitate manufacturing and sealing connection; they can also be different to adapt to different suction transmission requirements and process parameters. The above-mentioned first cavity and the second cavity are sealed and connected to form a material cavity to prevent leakage or overflow of suction during the operation of the suction system, thereby maintaining the suction pressure in the material cavity stable and improving the overall stability of the suction system. At least a portion of the guide seat 101 is located in the material cavity through the opening. By setting the guide seat 101, a "narrowed" suction channel 60 is formed between the guide seat 101 and the material cavity by utilizing the "narrow tube effect", so that under the same negative pressure supply conditions, the suction can act more concentratedly on the suction channel 60, so that the suction air can flow through the suction channel 60 faster and the suction air flow rate can be increased. The above-mentioned partial guide seat 101 located in the cavity is set to correspond to the shape of the cavity, and forms a suction channel 60 with the inner wall of the material cavity. The cross-section of the above-mentioned suction channel 60 in the horizontal direction is annular, and the distance between the guide seat 101 and the inner wall of the material cavity on the same horizontal plane is equal, that is, the cross-sectional width of the suction channel 60 on the same horizontal plane is the same; the suction air can be subjected to uniformly distributed suction when flowing through the suction channel 60, ensuring that the fabric is subjected to balanced traction in the material cavity, avoiding problems such as offset and deformation caused by excessive or insufficient local force; and the suction channel 60 with an annular cross-section can more effectively utilize the space in the cavity, so that the suction air can pass more smoothly during the flow process, reducing flow resistance, and improving the overall efficiency of the suction system, so that under the same suction supply conditions, a stronger suction effect can be generated.

[0044] See also Figure 1As shown, in some embodiments, the guide seat 101 is in the shape of an inverted truncated cone, and the outer wall of the guide seat 101 and the inner wall of the material cavity have a first angle α, and the first angle α is 0°-15°. The inverted truncated cone design enables the suction air to gradually change its flow direction and accelerate when flowing through the guide seat 101, thereby reducing the flow resistance and improving the flow efficiency of the suction air. Thus, the kinetic energy of the suction air is more effectively utilized to generate suction. At the same time, the first angle α is 0°-15°, which can optimize the suction effect and enable the suction air to generate greater kinetic energy when flowing through the guide seat 101, thereby enhancing the suction effect. In some embodiments, the guide seat 101 is cylindrical, and the cylindrical design is convenient for processing and installation. The cylindrical design enables the guide seat 101 to have better stability in the material cavity and can more accurately control the flow path and speed of the suction air.

[0045] See also Figure 4 As shown, the above-mentioned suction channel 60 needs to take into account the need for the woven fabric to enter the material cavity and provide more sufficient traction for the fabric. A smaller cross-sectional spacing D of the suction channel can limit the range of movement of the fabric, helping the fabric to enter the material cavity more stably. However, if the cross-sectional spacing D of the suction channel is too small, the fabric may encounter excessive resistance when entering the material cavity, or even cause blockage or damage. A larger cross-sectional spacing D of the suction channel can increase the flow space of the suction air in the suction channel 60, thereby increasing the flow rate and flow of the suction air, and providing more sufficient traction for the fabric. However, if the cross-sectional spacing D of the suction channel is too large, it may cause eddies or turbulence in the flow of the suction air, reducing the suction efficiency and also being detrimental to the stable traction of the fabric. In some embodiments, the cross-sectional spacing D of the suction channel (i.e., the distance between the guide seat 101 and the inner wall of the material cavity on the same horizontal plane) is 3mm-7mm; 3mm-7mm provides more sufficient traction for the fabric while ensuring that the fabric can enter the material cavity smoothly.

[0046] See also Figure 2 、 Figure 3 and Figure 5As shown, to prevent the fabric from floating out of the gap between the sinker plate 20 and the half plate 10, bulging at the opening of the sinker plate 20, and accumulating around the outer periphery of the sinker plate 20, a guide plate 50 can be provided. The free end 501 of the guide plate 50 is positioned above the opening and located at the suction channel 60, allowing the free end 501 of the guide plate 50 to support the woven fabric and allow it to enter the cavity through the suction channel 60. The free end 501 of the guide plate 50 can directly support the woven fabric, ensuring that the fabric enters the suction channel 60 according to the predetermined path and angle, and then smoothly enters the cavity. Through precise guidance and the traction effect of the suction system, the fabric maintains a continuous and stable flow during transportation, reducing downtime caused by fabric deviation, blockage, or damage. This helps improve production efficiency and reduce production costs. The guide plates 50 can be multiple, preferably distributed circumferentially, to ensure that the fabric receives balanced and precise guidance and traction within the cavity, avoiding problems such as deviation and deformation caused by excessive or insufficient local forces.

[0047] See also Figure 2 、 Figure 3 and Figure 5 As shown, in some embodiments, the guide plate 50 can be flat, with a simple structure that is easy to manufacture and install. The guide plate 50 only needs to be positioned parallel to and above the suction channel 60, ensuring that the free end 501 of the guide plate 50 can directly engage the woven fabric. In some embodiments, the guide plate 50 can be curved, with the free end 501 of the guide plate 50 having a smooth transition surface. During installation, the transition surface directly engages the woven fabric, reducing friction and damage to the fabric during the guiding process. In some embodiments, the guide plate 50 is bent at least once near the free end 501 to form a bend 503, allowing the free end 501 of the guide plate 50 to engage the woven fabric in a non-horizontal direction. Specifically, the free end 501 of the guide plate 50 forms a second angle β with the horizontal. The bend 503 guides the woven fabric into the suction channel 60 in a predetermined direction, effectively preventing the fabric from shifting or tangling during transport. By adjusting the angle and shape of the bend 503, the fabric's trajectory can be further precisely controlled, ensuring smooth entry into the cavity. This helps improve suction efficiency, enhances traction on the fabric, and ensures fabric stability during transport. Preferably, the second angle β is between 45° and 60°. This angle range ensures a moderate contact area between the guide plate 50 and the fabric, neither too large to increase frictional resistance nor too small to inadequate traction.

[0048] See also Figure 2As shown, the fixed end 502 of the guide plate 50 can be connected to a variety of places, depending on the design requirements and actual application scenarios of the equipment. It can be directly connected to the rack or frame of the equipment. This connection method is simple and direct, and can ensure that the guide plate 50 is stably fixed in the equipment and is not prone to loosening or displacement. Additional support structures can also be provided on the rack or frame, and the fixed end 502 of the guide plate 50 is connected to these support structures. In some embodiments, the fixed end 502 of the guide plate 50 is connected to the workbench 40. That is, the knitting mechanism also includes a workbench 40, and the workbench 40 is sleeved on the outer periphery of the needle cylinder 30; the fixed end 502 of the guide plate 50 is connected to the workbench 40.

[0049] The first cavity and the second cavity can be sealed with sealing elements such as sealing rings, sealing gaskets or sealants to ensure that the connection between the two has good sealing performance. This sealing design can not only effectively prevent the leakage of the fluid, but also reduce the impact of the external environment on the fluid in the material cavity, ensuring the accuracy and reliability of fluid transmission. In some embodiments not shown, a material pipe can also be provided through the first cavity and the second cavity so that the first cavity and the second cavity are sealed and connected to form a material cavity, that is, the lumen of the material pipe is the material cavity, which ensures the integrity of the material cavity and prevents leakage or overflow of suction during the suction system, thereby maintaining the suction pressure in the material cavity stable and improving the overall stability of the suction system.

[0050] The present invention also provides a circular knitting machine that utilizes the aforementioned knitting mechanism. By improving the knitting mechanism, the improved knitting mechanism provides more sufficient traction for the fabric, making it easier for the fabric to pass through the suction channel 60 and enter the material chamber. This prevents the fabric from floating out of the gap between the sinker plate 20 and the half plate 10, bulging at the opening of the sinker plate 20, and accumulating on the outer periphery of the sinker plate 20, thereby causing problems such as poor fabric appearance. This reduces downtime and adjustment time throughout the production process, effectively improving overall production efficiency.

[0051] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection of the present utility model. Therefore, based on the innovative concept of the present utility model, changes and modifications to the embodiments described herein, or equivalent structural or process transformations made using the contents of the present utility model specification and drawings, and direct or indirect application of the above technical solutions to other related technical fields are all included in the scope of protection of the present utility model patent.

Claims

1. A knitting mechanism of a circular knitting machine, comprising a half disk and a needle cylinder assembly, wherein the half disk is located above the needle cylinder assembly and rotates concentrically with the needle cylinder assembly; characterized in that: The bottom of the half plate is provided with a guide seat; the syringe assembly includes a score plate and a syringe arranged in sequence from top to bottom; the score plate and the syringe are respectively provided with a first cavity and a second cavity, the first cavity and the second cavity are sealed and connected to form a material cavity, and the upper part of the score plate is provided with an opening connected to the material cavity; at least a part of the guide seat is located in the material cavity through the opening, and the part of the guide seat located in the cavity is arranged corresponding to the shape of the cavity, and forms a suction channel with the inner wall of the material cavity, so that the fabric enters the material cavity through the suction channel.

2. The knitting mechanism of the circular knitting machine according to claim 1, characterized in that: The guide seat is in the shape of an inverted truncated cone, and the outer wall of the guide seat and the inner wall of the material cavity have a first angle, and the first angle is 0°-15°.

3. The knitting mechanism of the circular knitting machine according to claim 1, characterized in that: The cross-sectional spacing of the suction channel is 3mm-7mm.

4. The knitting mechanism of the circular knitting machine according to claim 1, characterized in that: It also includes a guide plate, the free end of which is located above the opening and at the suction channel, so that the free end of the guide plate can mortgage the woven fabric and enter the cavity through the suction channel.

5. The knitting mechanism of the circular knitting machine according to claim 4, characterized in that: The guide plate is bent at least once on one side close to the free end to form a bent portion, so that the free end of the guide plate is supported by the woven fabric in a non-horizontal direction.

6. The knitting mechanism of the circular knitting machine according to claim 5, characterized in that: The free end of the guide plate forms a second angle with the horizontal direction, and the second angle is 45°-60°.

7. The knitting mechanism of the circular knitting machine according to claim 4, characterized in that: It also includes a workbench, which is sleeved on the outer circumference of the syringe; the fixed end of the guide plate is connected to the workbench.

8. The knitting mechanism of the circular knitting machine according to claim 1, characterized in that: A material pipe is provided through the first cavity and the second cavity, so that the first cavity and the second cavity are sealed and connected to form a material cavity.

9. A circular knitting machine, characterized in that: A knitting mechanism of a circular knitting machine according to any one of claims 1 to 8.

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