Lubricating mechanism of circular knitting machine

Abstract

The utility model discloses a lubricating mechanism of a circular knitting machine. The lubricating mechanism comprises a bottom plate, a shell, a knitting needle and an oil injection system. A horizontal axial driving motor and a cam which are arranged on the bottom plate drive the knitting needles which are coaxially and downwards placed in the first sleeve and the second sleeve to do vertical telescopic motion. A set of vertical grooves are formed in the side wall of the first sleeve, a set of connecting columns are arranged outside the side wall of the first sleeve, and oil spraying holes are formed in the side wall of the second sleeve. A group of cross rods are horizontally arranged on the side face of the knitting needle and vertically move up and down along the vertical grooves, and reset springs are connected between the cross rods and the connecting columns. A first partition plate and a second partition plate are horizontally arranged at the second sleeve, and an oil injection system is arranged on the first partition plate. According to the device provided by the utility model, the reset spring and the limiting vertical groove are arranged, so that the telescopic movement of the knitting needle is not easy to deviate; oil injection lubrication is automatically completed in the telescopic movement process of the knitting needle, the structure is reliable, and cost is low; and the dust cover assembly is arranged, so that maintenance is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of large circular knitting machines, and particularly relates to a lubrication mechanism for a large circular knitting machine. Background Art

[0002] A large circular knitting machine, also known as a knitting large circular machine or a circular weft knitting machine, is characterized by a large number of loop-forming systems (referred to as the number of yarn feeding paths or loop-forming paths in enterprises, abbreviated as the number of paths), high rotational speed, high output, fast pattern change, good fabric quality, few processes, and strong product adaptability.

[0003] A knitting large circular machine is a high-speed operating and precisely cooperating precision machine with a knitting needle system as the core. Since a lot of flying yarns and dust will be generated during the knitting process, the central components of the completed knitting are likely to be blocked due to flying yarns, dust, and oil stains, and may be damaged severely in serious cases. Therefore, the lubrication treatment of the operating components is quite important.

[0004] The quality of the lubrication effect at the moving connection of the knitting needles affects both the knitting speed and the quality of the knitted products on the other hand.

[0005] For example, the utility model patent with the patent number CN209941229U and the name of a lubrication mechanism for a new type of large circular knitting machine, the main content of which is: The utility model discloses a lubrication mechanism for a new type of large circular knitting machine, including a disc, a mounting cylinder, knitting needles, and a mounting plate. An upper part of the disc is provided with the mounting plate, a movable plate is sleeved on a first fixed pile, and the knitting needles are installed at an upper end of the mounting cylinder. A plurality of groups of first rolling beads are installed in a first fixed frame from top to bottom, and a plurality of groups of second rolling beads are installed in a second fixed frame from top to bottom. The lubrication mechanism for the new type of large circular knitting machine has a simple and reasonable structure. Through the ball structures on the left and right sides inside the provided mounting plate, an effective clamping and sliding effect can be achieved during the up and down movement of the knitting needles, ensuring that the knitting needles can move up and down in a vertical line inside the mounting plate, thereby preventing the knitting needles from tilting and shifting, further avoiding the phenomenon of excessive friction between the knitting needles and the mounting plate, and playing a lubricating role for the connection, reducing the wear degree. At the same time, the movable plate drives the knitting needles to extend and retract inside the mounting plate, making it more convenient to use.

[0006] The utility model patent has the following problems: The knitting needles are only fixed by clamping with balls, and it is difficult to achieve the effect of preventing the knitting needles from tilting and shifting; the lubrication mechanism part is complex, and an additional cylinder system needs to be installed as power, increasing the use and maintenance costs of the equipment; it is difficult to prevent flying yarns and dust from entering the mechanical interior, and it is easy to accumulate and block the transmission components. Summary of the Utility Model

[0007] In order to solve the above technical problems, the utility model provides the following technical solution: A lubrication mechanism for a large circular knitting machine, including a bottom plate, a housing, knitting needles, and an oil injection system.

[0008] The outer shell is disposed on the bottom plate, and the outer shell includes a motor cover and a first sleeve connected below the motor cover. A second sleeve with a narrowed diameter is provided below the first sleeve.

[0009] A driving motor is horizontally axially provided on the bottom plate. The driving motor is located in the motor cover, and a cam is provided on the output shaft of the driving motor.

[0010] The knitting needle is coaxially placed downward in the first sleeve and the second sleeve, and the knitting needle is located below the cam.

[0011] Further, a set of first balls is provided in the inner wall of the first sleeve, and a set of second balls is provided in the inner wall of the second sleeve.

[0012] Further, both the first balls and the second balls are made of hollow brass balls, which are light in weight and smooth.

[0013] A set of vertical grooves is provided on the side wall of the first sleeve, a set of connecting columns is provided outside the side wall of the first sleeve, and an oil injection hole is provided on the side wall of the second sleeve.

[0014] A set of cross bars is horizontally provided on the side of the knitting needle. The cross bars move vertically up and down along the vertical grooves, and a return spring is connected between each cross bar and the connecting column. The return spring makes the upper end of the knitting needle always abut against the cam.

[0015] A first partition and a second partition are horizontally provided at the second sleeve, and the oil injection system is provided on the first partition.

[0016] The oil injection system includes a pressing pump. The pressing pump is fixed on the first partition. The spring pump rod of the pressing pump abuts against the lower side of the cross bar. An oil lubricant tank is provided above the pressing pump, and a nozzle is connected below the pressing pump. The spraying direction of the nozzle is directly opposite to the oil injection hole.

[0017] Further, a dust-proof cover assembly is provided on the second partition to cover the outlet of the second sleeve.

[0018] Further, the dust-proof cover assembly includes a silica gel bowl. A cross cut is provided at the center of the silica gel bowl. A pressing ring is provided at the edge of the silica gel bowl. The pressing ring is screwed to the second partition by a screw to tightly press and fix the silica gel bowl at the outlet of the second sleeve.

[0019] A lubrication mechanism for a large circular knitting machine provided by the present utility model has the following advantages: By providing a reset spring and a limiting vertical groove, the telescopic movement of the knitting needle is not prone to deviation, which is beneficial to improving product quality; By providing an extrusion pump, oil spraying lubrication is automatically completed during the telescopic movement of the knitting needle, with a reliable structure and low cost; A dust-proof cover assembly is provided to effectively prevent flying fluffs and dust from entering the internal mechanical structure, facilitating maintenance. Brief Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic structural diagram of a lubrication mechanism for a large circular knitting machine of the present utility model;

[0022] Figure 2 It is an external view schematic diagram of the dust-proof cover assembly of a lubrication mechanism for a large circular knitting machine of the present utility model.

[0023] The reference numerals in the drawings are explained as follows: 1. Base plate, 101. Driving motor, 102. Cam, 103. First partition, 104. Second partition, 2. Outer shell, 201. Motor cover, 202. First sleeve, 2021. First ball, 2022. Vertical groove, 2023. Connecting column, 203. Second sleeve, 2031. Second ball, 2032. Oil spraying hole, 3. Knitting needle, 301. Cross bar, 302. Reset spring, 4. Oil spraying system, 401. Extrusion pump, 402. Lubricating oil tank, 403. Nozzle, 5. Dust-proof assembly, 501. Silicone bowl, 5011. Cross cut, 502. Pressing ring. Detailed Embodiment

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0025] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] As Figure 1 , Figure 2 shown, an embodiment provided by the present utility model is a lubrication mechanism for a large circular knitting machine, including a bottom plate 1, a housing 2, knitting needles 3, and an oil injection system 4.

[0027] The housing 2 is arranged on the bottom plate 1. The housing 2 includes a motor cover 201 and a first sleeve 202 connected below the motor cover 201. A second sleeve 203 with a narrowed diameter is provided below the first sleeve 202.

[0028] A driving motor 101 is horizontally axially arranged on the bottom plate 1. The driving motor 101 is located in the motor cover 201, and a cam 102 is provided on the output shaft of the driving motor 101.

[0029] The knitting needles 3 are coaxially placed downward in the first sleeve 202 and the second sleeve 203. The knitting needles 3 are located below the cam 102.

[0030] Preferably, a set of first balls 2021 is provided on the inner wall of the first sleeve 202, and a set of second balls 2031 is provided on the inner wall of the second sleeve 203. The first balls 2021 and the second balls 2031 can reduce friction and firmly hold the movement of the knitting needles 3.

[0031] Preferably, both the first balls 2021 and the second balls 2031 are made of hollow brass balls, which can reduce the weight while using the self-lubricating effect of copper to reduce the frictional resistance.

[0032] A set of vertical grooves 2022 is provided on the side wall of the first sleeve 202, a set of connecting columns 2023 is provided outside the side wall of the first sleeve 202, and an oil injection hole 2032 is provided on the side wall of the second sleeve 203.

[0033] A set of cross bars 301 are horizontally arranged on the side of the knitting needle 3. The cross bars 301 move vertically up and down along the vertical groove 2022, and the vertical groove 2022 plays a role in limiting the knitting needle. A return spring 302 is connected between each cross bar 301 and the connecting column 2023. The return spring 302 makes the upper end of the knitting needle 3 always abut against the cam 102. When the driving motor 101 drives the cam 102 to rotate, the knitting needle 3 will do vertical telescopic movement under the oppression of the cam 102 and the elastic force of the return spring 302. The knitting needle 3 is limited in multiple directions and is less likely to deviate.

[0034] A first partition 103 and a second partition 104 are horizontally arranged at the second sleeve 203, and an oil injection system 4 is arranged on the first partition 103.

[0035] The oil injection system 4 includes a pressing pump 401. When the pressing pump 401 is pressed, it will suck the liquid. It is a common and highly reliable part and will not be elaborated here. The pressing pump 401 is fixed on the first partition 103. The spring pump rod of the pressing pump 401 abuts against the lower part of the cross bar 301. An oil lubricant tank 402 is arranged above the pressing pump 401, and a nozzle 403 is connected below the pressing pump 401. The spraying direction of the nozzle 403 is directly opposite to the oil injection hole 2032. When the knitting needle 3 does vertical telescopic movement, the cross bar 301 will periodically press the spring pump rod of the pressing pump 401, making it periodically extract the lubricating oil and spray it on the knitting needle mechanism through the nozzle 403. The oil injection system 4 in this design has a simple and reliable structure, relies on the movement of the knitting needle 3 as the power, does not need to additionally increase a cylinder or an external energy source as the oil injection power, and can spray oil periodically following the movement of the knitting needle 3, so that it can be well and fully lubricated.

[0036] Preferably, a dust-proof cover assembly 5 is arranged on the second partition 104 to cover the outlet of the second sleeve 203.

[0037] Preferably, the dust-proof cover assembly 5 includes a silica gel bowl 501. A cross cut 5011 is arranged at the center of the silica gel bowl 501. The cross cut 5011 is used to guide the knitting needle 3, making it enter and exit the silica gel bowl 501 more smoothly, and can block flying flowers and dust outside. A pressing ring 502 is arranged at the edge of the silica gel bowl 501. The pressing ring 502 is screwed to the second partition 104 by screws to press and fix the silica gel bowl 501 at the outlet of the second sleeve 203.

[0038] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative labor.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A lubrication mechanism for a large circular knitting machine, characterized in that: It includes a bottom plate (1), a housing (2), knitting needles (3) and an oil injection system (4); The housing (2) is provided on the bottom plate (1). The housing (2) includes a motor cover (201) and a first sleeve (202) connected below the motor cover (201). A second sleeve (203) with a narrowed diameter is provided below the first sleeve (202); A drive motor (101) is horizontally axially provided on the bottom plate (1). The drive motor (101) is located in the motor cover (201), and a cam (102) is provided on the output shaft of the drive motor (101); The knitting needles (3) are coaxially placed downward in the first sleeve (202) and the second sleeve (203). The knitting needles (3) are located below the cam (102); A group of vertical grooves (2022) are provided on the side wall of the first sleeve (202), a group of connecting columns (2023) are provided outside the side wall of the first sleeve (202), and oil injection holes (2032) are provided on the side wall of the second sleeve (203); A group of cross bars (301) are horizontally provided on the side of the knitting needles (3). The cross bars (301) move vertically up and down along the vertical grooves (2022). A return spring (302) is connected between the cross bars (301) and the connecting columns (2023). The return spring (302) makes the upper end of the knitting needles (3) always abut against the cam (102); A first partition plate (103) and a second partition plate (104) are horizontally provided at the second sleeve (203). The oil injection system (4) is provided on the first partition plate (103); The oil injection system (4) includes a pressing pump (401). The pressing pump (401) is fixed on the first partition plate (103). The spring pump rod of the pressing pump (401) abuts against the lower part of the cross bar (301). An oil lubricant tank (402) is provided above the pressing pump (401). A nozzle (403) is connected below the pressing pump (401). The spraying direction of the nozzle (403) is directly opposite to the oil injection holes (2032).

2. The lubricating mechanism of a large circular knitting machine according to claim 1, characterized in that: A group of first balls (2021) are provided in the inner wall of the first sleeve (202), and a group of second balls (2031) are provided in the inner wall of the second sleeve (203).

3. The lubrication mechanism of a large circular knitting machine according to claim 2, characterized in that: Both the first balls (2021) and the second balls (2031) are made of hollow brass balls.

4. A lubrication mechanism for a large circular knitting machine according to claim 1, characterized in that: A dust-proof cover assembly (5) is provided on the second partition plate (104) to cover the outlet of the second sleeve (203).

5. The lubrication mechanism of a large circular knitting machine according to claim 4, characterized in that: The dust-proof cover assembly (5) includes a silica gel bowl (501). A cross cut (5011) is provided at the center of the silica gel bowl (501). A pressing ring (502) is provided at the edge of the silica gel bowl (501). The pressing ring (502) is screwed to the second partition plate (104) by screws to press and fix the silica gel bowl (501) at the outlet of the second sleeve (203).

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