Knitting machine with double-sided large circular oil-proof needle dial

Abstract

The utility model discloses a kind of knitted double-sided large circular knitting machine oil-proof needle needle disc, including needle disc, suction device and knitting needle;The needle disc is provided with needle groove, and the knitting needle is slidably arranged in the needle groove;The knitting needle includes needle bar and needle hook portion located at the outer end of the needle bar;The needle disc is provided with needle protection groove corresponding to the position of the needle bar;Oil collecting groove is formed below the needle protection groove;Suction passage is provided in the needle disc, one end of the suction passage is connected with the oil collecting groove, and the other end of the suction passage is connected with the suction device.The technical solution is used to solve the problem of oil needle in the existing knitted double-sided large circular knitting machine.

Description

Technical Field

[0001] This utility model belongs to the field of textile equipment technology, specifically relating to an oil-proof needle plate for a double-sided circular knitting machine. Background Technology

[0002] As a core weaving equipment in the textile industry, the double-sided circular knitting machine relies on the coordinated movement of the upper needle plate and the lower needle cylinder to achieve double-sided fabric weaving. In the specific workflow, the upper needle plate drives the circumferentially distributed knitting needles to rotate synchronously through a transmission mechanism. At the same time, the knitting cam assembly guides the needle heels through a preset trajectory, causing the needles to slide back and forth within the needle grooves radially opened on the needle plate, ultimately completing key weaving actions such as yarn hooking and loop formation.

[0003] Because of the continuous relative motion between the knitting needles and the needle groove wall, long-term operation can easily lead to wear of components due to friction. This not only shortens the service life of the knitting needles and needle plate, but also causes quality problems such as needle jamming and uneven fabric density. Therefore, the industry commonly uses the method of periodically adding lubricating oil to the needle groove to reduce the coefficient of friction through oil film lubrication and ensure stable operation of the equipment. However, this lubrication method has significant drawbacks in practical applications: on the one hand, the centrifugal force generated by the high-speed rotation of the upper needle plate causes the lubricating oil in the needle groove to diffuse towards the needle tip; on the other hand, during the high-frequency reciprocating sliding of the knitting needle, the needle bar drives the lubricating oil to move synchronously, further pushing the lubricating oil to the needle hook area.

[0004] When lubricating oil adheres to the surface of the needle hook, it directly contaminates the yarn being woven, creating what is commonly known in the industry as an "oil needle" defect. Fabric woven from yarn containing "oil needles" will have noticeable oil stains on its surface, failing to meet the quality requirements of downstream apparel and home textile industries. To solve this problem, manufacturers need to add high-temperature cleaning and chemical degreasing processes in subsequent steps, which not only consumes additional water resources, chemical reagents, and energy, but also extends the production cycle and significantly increases the production cost of the fabric.

[0005] To address the aforementioned lubricant contamination problem, existing technologies propose a scheme involving an oil collection groove on the needle bar of the knitting needle, combined with directional blowing using a fan. This scheme attempts to collect the lubricant on the needle bar through the oil collection groove, while simultaneously using airflow generated by the fan to blow excess lubricant from the needle bar surface towards the oil collection groove, thus preventing the lubricant from flowing towards the needle hook. However, in practical applications, this scheme has significant technical drawbacks: due to the high-speed reciprocating motion of the knitting needle and the complex internal structure of the needle disc, the direction of the airflow generated by the fan is difficult to control precisely. Some airflow blows lubricant droplets away from the preset collection range of the oil collection groove, causing the lubricant droplets to splash and spread to the needle tip area. This not only fails to effectively solve the problem of lubricant contamination of the yarn but also, to some extent, increases the probability of "oil needle" defects, failing to meet the actual production requirements for fabric quality and production cost control. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model provides an oil-proof needle plate for a double-sided circular knitting machine, which solves the problem of oily needles in existing double-sided circular knitting machines. This oil-proof needle plate can effectively reduce the flow of lubricating oil to the needle hook, thus preventing fabric contamination.

[0007] This utility model discloses an oil-proof needle plate for a double-sided circular knitting machine, comprising a needle plate, a suction device, and knitting needles; the needle plate is provided with a needle groove, and the knitting needles are slidably disposed in the needle groove; the knitting needles include a needle bar and a needle hook portion located at the outer end of the needle bar; a needle guard groove is provided on the needle plate corresponding to the position of the needle bar; an oil collection groove is formed below the needle guard groove; a suction channel is provided inside the needle plate, one end of the suction channel is connected to the oil collection groove, and the other end of the suction channel is connected to the suction device.

[0008] Furthermore, the suction device includes an oil collection chamber and a suction fan. The oil collection chamber is located at the bottom of the upper needle plate and is connected to the suction channel. The suction fan is connected to the top of the oil collection chamber.

[0009] Furthermore, the needle guard groove and the oil collection groove are annular grooves.

[0010] This double-sided circular knitting machine features an oil-proof needle plate with a needle guard groove at the corresponding needle bar position. This creates a physical barrier against lubricating oil adhering to the needle bar surface, directly cutting off the critical path of lubricating oil migration to the needle hook under centrifugal force and needle bar movement. This reduces the probability of lubricating oil contaminating the yarn from the source. The oil collection chamber at the bottom of the upper needle plate uses gravity to assist in collecting lubricating oil. Combined with the negative pressure of the top suction fan, this forms a dual collection force of "gravity + negative pressure." Even at high speeds, it ensures the stability and reliability of lubricating oil suction, avoiding fluctuations in suction effect due to changes in needle plate speed. This ensures the continuous effectiveness of the oil-proof function, effectively reducing "oil needle" defects. No additional degreasing process is required, significantly reducing production costs and shortening the production cycle for manufacturers. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of an oil-resistant needle plate on a double-sided circular knitting machine. Detailed Implementation

[0013] This utility model discloses an oil-proof needle plate for a double-sided circular knitting machine. This oil-proof needle plate can effectively reduce the flow of lubricating oil to the needle hook and avoid contaminating the fabric.

[0014] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, what is described is only a part of the embodiments of this utility model, and not all of the embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0015] See Figure 1 As shown, this utility model discloses an oil-proof needle plate 10 for a double-sided circular knitting machine, including a needle plate 10, a suction device, and knitting needles 1; the needle plate 10 is provided with a needle groove 2, and the knitting needles 1 are slidably disposed in the needle groove 2; the knitting needles 1 include a needle bar 3 and a needle hook portion 4 located at the outer end of the needle bar 3; a needle guard groove 2 is provided on the needle plate 10 corresponding to the position of the needle bar 3; an oil collection groove 8 is formed below the needle guard groove 2; a suction channel 9 is provided inside the needle plate 10, one end of the suction channel 9 is connected to the oil collection groove 8, and the other end of the suction channel 9 is connected to the suction device.

[0016] This double-sided circular knitting machine's oil-proof needle plate 10 features a needle guard groove 2 at the corresponding needle bar 3 position of the needle 1. This creates a physical barrier against lubricating oil adhering to the surface of the needle bar 3, directly cutting off the critical path of lubricating oil migration to the needle hook 4 under the action of centrifugal force and the movement of the needle bar 3. This reduces the probability of lubricating oil contaminating the yarn from the source. The oil collection chamber 6 at the bottom of the upper needle plate 10 can collect lubricating oil with gravity assistance. Combined with the negative pressure of the top suction fan 5, it forms a dual collection power of "gravity + negative pressure". Even under high-speed operation, it can ensure the stability and reliability of lubricating oil suction, avoid fluctuations in suction effect due to changes in needle plate speed, ensure the continuous effectiveness of the oil-proof contamination function, effectively reduce "oil needle" defects, eliminate the need for subsequent degreasing processes, and significantly reduce production costs and production cycles for manufacturers.

[0017] The suction device includes an oil collection chamber 6 and a suction fan 5. The oil collection chamber 6 is located at the bottom of the upper needle plate 10 and is connected to the suction channel 9. The suction fan 5 is connected to the top of the oil collection chamber 6.

[0018] This claim specifies that the suction device includes an oil collecting chamber 6 and a suction fan 5. The oil collecting chamber 6 is located at the bottom of the upper needle plate 10 and is connected to the suction channel 9. The suction fan 5 is connected to the top of the oil collecting chamber 6. This structure forms a highly efficient suction path of "suction channel 9 - oil collecting chamber 6 - suction fan 5". The oil collecting chamber 6 can temporarily store and buffer the lubricating oil delivered from the suction channel 9, preventing the lubricating oil from directly entering the suction fan 5 and affecting the operation of the fan. At the same time, the suction fan 5 is located at the top of the oil collecting chamber 6 and can uniformly and stably draw the lubricating oil out of the oil collecting chamber 6 through negative pressure. Compared with the fan scheme in the prior art that does not have a clear buffer and directional suction structure, the suction efficiency is higher, and the lubricating oil in the oil collecting tank 8 can be completely removed, further reducing the possibility of oil droplet residue and diffusion, and strengthening the anti-"oil needle" effect.

[0019] The needle guard groove 2 and the oil collection groove 8 are annular grooves.

[0020] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A needle plate for an oil-proof needle on a double-sided circular knitting machine, characterized in that, The device includes an upper needle plate, a suction device, and knitting needles. The upper needle plate is provided with a needle groove, and the knitting needles are slidably disposed in the needle groove. The knitting needles include a needle bar and a needle hook portion located at the outer end of the needle bar. A needle guard groove is provided on the upper needle plate corresponding to the position of the needle bar. An oil collection groove is formed below the needle guard groove. A suction channel is provided inside the upper needle plate, one end of the suction channel is connected to the oil collection groove, and the other end of the suction channel is connected to the suction device.

2. The oil-resistant needle plate for a double-sided circular knitting machine according to claim 1, characterized in that, The suction device includes an oil collection chamber and a suction fan. The oil collection chamber is located at the bottom of the upper needle plate and is connected to the suction channel. The suction fan is connected to the top of the oil collection chamber.

3. The oil-resistant needle plate for a double-sided circular knitting machine according to claim 1, characterized in that, The needle guard groove and the oil collection groove are annular grooves.

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