Needle cylinder and knitting machine with same

Abstract

The invention discloses a needle cylinder and a knitting machine with the same, and relates to the technical field of knitting machines. The needle cylinder comprises a needle cylinder body and a self-lubricating device, needle grooves are formed in the peripheral side of the needle cylinder body at equal intervals along the annular track, and the self-lubricating device is arranged at the bottom of the needle cylinder body; the self-lubricating device comprises a ring body abutting against the end face of the bottom end of the needle cylinder body, an annular cavity is formed in the peripheral side of the ring body, and the open end of the annular cavity is connected with an annular shell. An annular collecting groove is formed in the upper surface, located under the needle groove, of the ring body, the collecting groove comprises an inclined first bottom face and a horizontal second bottom face, and a through hole is formed in the second bottom face in a penetrating mode; the inner wall face of the annular cavity is sunken to form an annular filtering cavity, and the filtering cavity communicates with the collecting groove through the through hole. The collecting groove with the inclined bottom face is formed under the needle groove, the filtering cavity and the oil pumping structure are matched, redundant lubricating oil dripping from the needle cylinder body can be effectively collected, and after being filtered, the lubricating oil is automatically pumped back to the oil injection ring to be recycled.

Description

Technical Field

[0001] This invention belongs to the field of knitting machine technology, and in particular relates to a needle cylinder and a knitting machine having a needle cylinder. Background Technology

[0002] In the process of knitting fabrics, the needle cylinder of the knitting machine plays a crucial role. It is used to fix and guide the needles, control the reciprocating motion of the needles, achieve the correct needle rhythm and sequence, ensure the accurate insertion and withdrawal of the needles, and guide the movement trajectory of the needles to ensure the normal knitting of the fabric. Through these functions, the needle cylinder provides important support for the normal operation of the knitting machine and the quality of the fabric.

[0003] The syringes used in the prior art need to be used with a knitting machine for rotary knitting. However, after prolonged use, the smoothness of rotation will become sluggish. Therefore, it is necessary to add lubricant to ensure smooth rotation and reduce the frequency of syringe rotation wear.

[0004] For example, CN223329482U discloses a self-lubricating knitting machine cylinder, including a cylinder body and a self-lubricating device. The self-lubricating device allows lubricant to enter the connecting pipe through an oil injection pipe. Combined with oil injection ports on both sides of the connecting pipe, the lubricant enters the brush cylinder, wetting it. This allows the brush cylinder to apply lubricant to the lower outer side of the cylinder body, ensuring smooth rotation of the cylinder body and preventing rotational wear. However, in this technology, when there is too much oil in the needle groove of the cylinder body, this oil will drip under gravity. The dripping oil not only easily pollutes the surrounding environment of the equipment but also wastes oil. Summary of the Invention

[0005] The purpose of this invention is to provide a syringe and a knitting machine with a syringe, which solves the problem of oil dripping into the surrounding environment of the equipment by setting a collection tank directly below the needle groove.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0007] This invention relates to a syringe, comprising a syringe body and a self-lubricating device. The syringe body has needle grooves evenly spaced along a circular trajectory on its periphery. The self-lubricating device is located at the bottom of the syringe body. The self-lubricating device includes a ring body abutting against the bottom end face of the syringe body. An annular cavity is formed on the outer periphery of the ring body, and the opening end of the annular cavity is connected to an annular shell. An annular collecting groove is provided on the upper surface of the ring body directly below the needle grooves. The collecting groove includes an inclined first bottom surface and a horizontal second bottom surface, with a through hole penetrating the second bottom surface. An annular filtering cavity is formed by a recess in the inner wall of the annular cavity, and the filtering cavity communicates with the collecting groove through the through hole. An opening is provided on one side of the annular shell, and a rotatable wiping mechanism is provided inside the annular shell. One side of the wiping mechanism passes through the opening and contacts the syringe body. An annular filter plate is installed between the annular cavity and the filtering cavity.

[0008] Furthermore, the annular shell includes an outer shell and an inner shell connected by several connecting rods, both of which are circular tubular structures; the opening is formed on the inner shell, and a protruding limiting ring is provided on the bottom outer wall surface of the inner shell, the limiting ring being tightly attached to an inner wall surface of the collection groove; the inner wall surface of the annular cavity located directly above the filter chamber is recessed to form an annular clearance cavity, and both inner wall surfaces at the top opening end of the annular cavity are provided with protruding fixing rings; the bottom ends of the outer shell and the inner shell are each provided with fixing rings, the fixing rings and fixing rings are connected by connecting bolts; the fixing rings and fixing rings are each provided with mounting grooves for installing annular sealing rings on opposite sides.

[0009] Furthermore, an annular boss is provided on the bottom side of the annular cavity; the filter plate is inserted between the annular boss and the annular cavity; a horizontal plate is inserted into the clearance cavity, a rubber layer one is provided on the bottom side of the horizontal plate, and a protrusion that fits against the inner wall of the clearance cavity one is provided at the end of the horizontal plate, and at least one positioning post is provided at the end of the protrusion; a positioning hole for the positioning post is provided on the top surface of the filter plate, and a rubber layer two is provided on the bottom side of the positioning hole; the end of the connecting bolt located above the clearance cavity extends into the clearance cavity, and the end of the connecting bolt abuts against the upper surface of the horizontal plate.

[0010] Furthermore, both of the two fixed rings are provided with upwardly protruding annular side plates on their opposite sidewalls.

[0011] Furthermore, an annular top cover is fixed to the top of the annular shell by fixing bolts; the top cover is provided with bearing hole one and bearing hole two, and a first bearing and a second bearing are respectively installed in bearing hole one and bearing hole two, and a sealing cover is provided on the top of bearing hole two; a first rotating rod and a second rotating rod are respectively assembled on the inner ring of the first bearing and the second bearing, and a motor is connected to the top of the first rotating rod through a coupling; a wiping roller and an oil-dipping roller are respectively fixed on the outer side of the first rotating rod and the second rotating rod, and the wiping roller and the oil-dipping roller are in contact and rotate synchronously.

[0012] Furthermore, a first synchronous pulley and a second synchronous pulley are respectively installed on the outer sides of the first rotating rod and the second rotating rod, and the first synchronous pulley and the second synchronous pulley are connected by a synchronous belt drive; a retainer is provided on the inner wall of the annular cavity, and a third bearing is installed at the end of the retainer, and the ends of the first rotating rod and the second rotating rod are respectively assembled on the inner rings of the two third bearings.

[0013] Furthermore, the wiping roller includes a roller body one connected to the outside of the first rotating rod via a connecting frame one, and a flexible wiping layer is provided on the outside of the roller body one; the oil-dipping roller includes a roller body two connected to the outside of the second rotating rod via a connecting frame two, and oil-dipping grooves are equidistantly opened on the outer side wall of the roller body two along an annular trajectory; both roller body one and roller body two are tubular structures; an oil-filling ring is installed on the top of the oil-dipping roller, and the bottom side of the oil-filling ring is recessed upward to form an annular groove that is stuck at the end of the roller body two; the inner bottom side of the annular groove is connected to a stop plate that abuts against the top surface of the roller body two via a column; the oil-filling ring is interference-fitted to the top of the roller body two; an oil-filling hole and an overflow hole are provided on the bottom side of the annular groove, and a protruding annular retaining edge is provided on the outer peripheral side wall of the top surface of the oil-filling ring.

[0014] Furthermore, a cam is installed at the end of the first or second rotating rod; an oil delivery structure is installed on the inner wall of the annular cavity, the oil delivery structure including an inner sleeve and an outer sleeve connected by a spring, the inner sleeve and the outer sleeve being sealed together; the outer sleeve is fixed to the inner wall of the annular cavity by a mounting bracket; an oil suction pipe and an oil injection pipe are connected to the inner sleeve, the end of the oil injection pipe is connected to an oil injection hole, and the oil inlet end of the oil suction pipe is located at the bottom of the annular cavity; a one-way valve structure one and a one-way valve structure two are respectively provided on the oil suction pipe and the oil injection pipe.

[0015] Furthermore, the top cover is also provided with a bearing hole three, a fourth bearing is installed in the bearing hole three, an operating rod is installed on the fourth bearing, a convex ring is provided on the outer periphery of the operating rod, and a damping rubber layer that mates with the inner wall surface of the bearing hole three is provided on the outer periphery of the convex ring; a crossbar is provided at one end of the operating rod located inside the annular housing, and a vertically shaped extrusion rod is connected to the end of the crossbar, and the extrusion rod contacts the outer wall surface of the wiping roller; the first bearing, the second bearing and the fourth bearing are all self-sealing bearings.

[0016] A knitting machine includes a frame on which needle cylinders are mounted as described above; a control cabinet is mounted on one side of the frame, and a control system is installed inside the frame.

[0017] The present invention has the following beneficial effects:

[0018] 1. This invention, by setting a collection groove with an inclined bottom directly below the needle groove, and in conjunction with a filter chamber and an oil pumping structure, can effectively collect excess lubricating oil dripping from the syringe body. After filtration, the oil is automatically pumped back to the injection ring for reuse. This solves the problem of waste and pollution caused by oil dripping in the prior art, realizes closed-loop management of lubricating oil, and has significant energy-saving and environmental benefits.

[0019] 2. This invention uses a motor-driven synchronously rotating oil-dipping roller and wiping roller to evenly and continuously apply lubricating oil to the rotating syringe body. Simultaneously, adjustable operating levers and squeezing levers are designed to precisely control the pressure of the wiping roller on the syringe body, thereby adjusting the amount of oil applied, avoiding insufficient or excessive lubrication, ensuring stable and smooth operation of the syringe over a long period, and extending the service life of the equipment.

[0020] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the syringe of the present invention;

[0023] Figure 2 for Figure 1 The main view;

[0024] Figure 3 for Figure 2 Sectional view at point AA;

[0025] Figure 4 for Figure 3 Enlarged view of a portion of point A in the middle;

[0026] Figure 5 for Figure 4 Enlarged view of a section at point B in the middle;

[0027] Figure 6 for Figure 4 Enlarged view of a section at point C;

[0028] Figure 7 for Figure 4 Enlarged view of a section at point D;

[0029] Figure 8 for Figure 4 Enlarged view of a section at point E in the middle;

[0030] Figure 9 This is a schematic diagram of the knitting machine of the present invention.

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 1-Syringe body, 2-Self-lubricating device, 3-Filter plate, 4-Motor, 5-Second rotating rod, 6-Operating rod, 7-Oil injection ring, 8-Frame, 10-Needle groove, 20-Ring body, 21-Annular shell, 22-Top cover, 23-Fixing bolt, 30-Positioning hole, 31-Horizontal plate, 32-Protrusion, 33-Positioning column, 34-Rubber layer one, 40-Motor bracket, 41-Coupling, 42-First rotating rod, 43-Synchronous pulley one, 44-Connecting frame one, 45-Roller one, 46-Wiping layer, 51-Synchronous pulley two, 52-Connecting frame two, 53-Roller two, 54-Oil dipping groove, 56-Cam, 57-Mounting frame, 58-Oil suction pipe, 59-Oil injection pipe, 61-Horizontal rod, 62-Extrusion rod, 71-Annular groove, 72-Column, 73-Support plate, 74-Oil injection hole, 75-Overflow hole, 76-Annular retaining edge, 81-Control cabinet, 201-Annular cavity, 202-Filter cavity, 203-First bottom surface, 204-Second bottom surface, 205-Through hole, 206-Allowing cavity, 207-Fixing ring one, 208-Annular boss, 210-Connecting rod, 211-Opening, 212-Limiting ring, 213-Fixing ring two, 214-Annular side plate, 215-Annular sealing ring, 216-Connecting bolt, 217-Cage, 221-Bearing hole one, 222-Bearing hole two, 223-First bearing, 224-Second bearing, 225-Sealing cover, 571 - Spring, 572 - Inner sleeve, 573 - Outer sleeve. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0035] Please see Figure 1-3 As shown, the syringe provided by the present invention includes a syringe body 1 and a self-lubricating device 2. The syringe body 1 has needle grooves 10 for mounting needles at equal intervals along a circular trajectory on its periphery; the self-lubricating device 2 is located at the bottom of the syringe body 1, and its main function is to automatically provide lubrication for the syringe body and recover excess oil.

[0036] like Figure 4-5 The core component of the self-lubricating device 2 is a ring 20, the upper end of which abuts against the bottom end of the syringe body 1. An annular cavity 201 is formed by a downward indentation on the outer periphery of the upper surface of the ring 20. An annular shell 21 is connected to the opening of the annular cavity 201 via a connecting bolt 216. The annular shell 21 is located on the outer periphery of the bottom end of the syringe body 1. The annular shell 21 consists of an outer shell and an inner shell connected by several connecting rods 210; both are circular tubular structures. An opening 211 is provided on one side of the inner shell. The device is equipped with a rotatable wiping mechanism. One side of the wiping mechanism passes through the opening 211 and contacts the syringe body 1. The upper surface of the ring 20 located directly below the needle groove 10 is provided with an annular collection groove. The collection groove includes an inclined first bottom surface 203 and a horizontal second bottom surface 204. A through hole 205 is provided through the second bottom surface 204. The inner wall of the annular cavity 201 is recessed to form an annular filter cavity 202. The filter cavity 202 is connected to the collection groove through the through hole 205. An annular filter plate 3 is installed between the annular cavity 201 and the filter cavity 202.

[0037] Excess lubricating oil will flow down along the syringe body 1 and drip into the collection groove on the ring body 20. The inclined first bottom surface 203 of the collection groove guides the oil to flow to the horizontal second bottom surface 204 and flows into the filter chamber 202 below through the through hole 205. After the oil is filtered by the filter plate 3, the clean oil remains at the bottom of the annular cavity 201.

[0038] Specifically, based on the above, such as Figure 4-5 To facilitate the installation of the annular shell 21, a protruding limiting ring 212 is provided on the bottom outer wall of the inner shell. In the installed state, the limiting ring 212 is tightly attached to the inner wall of the collection tank. An annular clearance cavity 206 is formed by recessing the inner wall of the annular cavity 201 located directly above the filter cavity 202. Both inner walls of the top opening end of the annular cavity 201 are provided with protruding fixing rings 207. Fixing rings 213 are provided on the bottom opposite inner walls of the outer shell and the inner shell. Fixing rings 213 and 207 are connected by connecting bolts 216. The connection of fixing rings 213 and 207 fixes the annular shell 21 to the ring body 20. To prevent internal oil from overflowing to the outside through the gap between fixing rings 213 and 207, mounting grooves for installing annular sealing rings 215 are provided on opposite sides of fixing rings 213 and 207. Annular sealing rings 215 are installed in the mounting grooves.

[0039] During long-term operation, such as Figure 4-5 A large amount of filter residue will remain on the filter chamber 202 and the filter plate 3. To facilitate the cleaning of the filter residue, the filter plate 3 needs to be disassembled and installed during use. An annular boss 208 is provided on the bottom side of the annular cavity 201. During installation, the filter plate 3 is inserted between the annular boss 208 and the annular cavity 201. At the same time, to facilitate the fixing of the inserted filter plate 3, a horizontal plate 31 is inserted into the relief cavity 206. A rubber layer 34 is provided on the bottom side of the horizontal plate 31. The end of the horizontal plate 31 is provided with a protrusion 32 that fits against the inner wall of the relief cavity 206. At least one positioning post 33 is provided at the end of the protrusion 32. The top surface of the filter plate 3 is provided with a positioning hole for the insertion of the positioning post 33. 30. A second rubber layer is provided on the bottom side of the positioning hole 30; the end of the connecting bolt 216 located above the clearance cavity 206 extends into the clearance cavity 206, and the end of the connecting bolt 216 abuts against the upper surface of the horizontal plate 31; that is, in use, the connecting bolt 216 located above the clearance cavity 206 can not only connect the annular shell 21 and the ring body 20, but also fix the horizontal plate 31 located in the clearance cavity 206 by the end of the connecting bolt 216 abutting against the upper surface of the horizontal plate 31. The fixed horizontal plate 31 utilizes the positioning fit of the positioning post 33 and the positioning hole 30, as well as the elastic buffer of the first rubber layer 34 and the second rubber layer, to facilitate the pressing and fixing of the filter plate 3.

[0040] During installation, insert the positioning pin 33 into the positioning hole 30, and then push the horizontal plate 31 into the clearance cavity 206. The end of the connecting bolt 216 located above the clearance cavity 206 extends into the clearance cavity 206 and abuts against the upper surface of the horizontal plate 31. By tightening the connecting bolt 216, the horizontal plate 31 can be pressed tight, thereby firmly fixing the filter plate 3 onto the annular boss 208.

[0041] The filter plate 3 of the present invention can be formed by multiple arc-shaped plate-shaped filter plate units, and the two ends of the filter plate unit are respectively provided with mutually cooperating arc-shaped protrusions and arc-shaped grooves.

[0042] In order to increase the oil storage capacity inside the annular cavity 201, annular side plates 214 with upward protrusions are provided on the opposite side walls of the two fixed rings 213.

[0043] It is known that, as Figure 4 and 6 In this invention, to facilitate the application of the oil stored inside the annular cavity 201 to the outer periphery of the syringe body 1, an annular top cover 22 is fixed to the top of the annular shell 21 by fixing bolts 23; the top cover 22 is provided with bearing hole 1 221 and bearing hole 222, and a first bearing 223 and a second bearing 224 are respectively installed thereon; the inner rings of the first bearing 223 and the second bearing 224 are respectively equipped with a first rotating rod 42 and a second rotating rod 5; the top of the first rotating rod 42 is connected to a motor 4 by a coupling 41, and the motor 4 is mounted on the top cover 22 by a motor bracket 40; a sealing cover 225 is provided on the top of the bearing hole 222; a synchronous pulley 1 43 and a synchronous pulley 2 51 are respectively installed on the outer sides of the first rotating rod 42 and the second rotating rod 5, and the synchronous pulley 1 43 and the synchronous pulley 2 51 are connected by a synchronous belt drive; a wiping roller and an oil-dipping roller are respectively fixed on the outer sides of the first rotating rod 42 and the second rotating rod 5, and the wiping roller and the oil-dipping roller are in contact and rotate synchronously.

[0044] To improve the stability of the wiping roller and the oil-dipping roller during rotation, two retainers 217 are provided on the inner wall of the annular cavity 201. The ends of the retainers 217 are equipped with third bearings, and the ends of the first rotating rod 42 and the second rotating rod 5 are respectively assembled on the inner rings of the two third bearings.

[0045] Specifically, in order to facilitate the even application of lubricating oil to the syringe body 1, the wiping roller includes a roller body 45 connected to the outside of the first rotating rod 42 via a connecting frame 44, and a flexible wiping layer 46 is provided on the outside of the roller body 45.

[0046] like Figure 4 and 8To facilitate the input of oil into the oil-dipping roller, the oil-dipping roller includes a roller body 2 53 connected to the outside of the second rotating rod 5 via a connecting frame 2 52. The outer wall of the roller body 2 53 is provided with oil-dipping grooves 54 at equal intervals along an annular trajectory. Both the roller body 1 45 and the roller body 2 53 are tubular structures. At the same time, an oil-filling ring 7 is installed on the top of the oil-dipping roller. The bottom side of the oil-filling ring 7 is recessed upward to form an annular groove 71 that is stuck at the end of the roller body 2 53. The inner bottom side of the annular groove 71 is connected to a stop plate 73 that abuts against the top surface of the roller body 2 53 via a column 72. The oil-filling ring 7 is interference-fitted to the top of the roller body 2 53. An oil-filling hole 74 and an overflow hole 75 are provided on the bottom side of the annular groove 71. A protruding annular baffle 76 is provided on the outer peripheral side wall of the top surface of the oil-filling ring 7. An oil conveying structure for conveying the oil stored inside the annular cavity 201 to the annular groove 71 is also provided.

[0047] The motor 4 is started, which drives the first rotating rod 42 to rotate through the coupling 41. The first rotating rod 42 drives the second rotating rod 5 to rotate synchronously through the synchronous belt. The second rotating rod 5 drives the oil-dipping roller to rotate. The oil-dipping roller carries lubricating oil from the oil injection ring 7 through the oil-dipping groove 54 on it. The oil-dipping roller contacts the wiping roller and transfers the lubricating oil to the wiping layer 46 of the wiping roller. The wiping layer 46 contacts the bottom of the rotating syringe body 1 through the opening 211, so that the lubricating oil absorbed on the wiping layer 46 is evenly applied to the syringe body 1 through contact, thereby achieving lubrication.

[0048] It is known that, in actual operation, due to the needs of producing different products, the lubricating oil needs to be evenly applied and adjusted. The top cover 22 is also provided with a bearing hole three, within which a fourth bearing is installed. An operating rod 6 is mounted on the fourth bearing. A convex ring is provided on the outer periphery of the operating rod 6, and a damping rubber layer that mates with the inner wall of the bearing hole three is provided on the outer periphery of the convex ring. A crossbar 61 is provided at one end of the operating rod 6 located inside the annular housing 21. A vertically shaped extrusion rod 62 is connected to the end of the crossbar 61. 2. The wiping layer 46 of the wiping roller is in contact with the outer wall surface of the wiping layer 46. By manually rotating the operating lever 6, the pressure of the squeezing rod 62 on the wiping layer 46 can be adjusted to squeeze out excess oil adsorbed on the wiping layer 46, thus avoiding excessive oil on the wiping layer 46 and excessive lubricant application. In other words, the amount of oil applied to the outer wall surface of the syringe body 1 by the wiping layer 46 can be controlled by adjusting the pressure of the squeezing rod 62 on the wiping layer 46 during use. The nylon layer mentioned above makes it easy to control the operating lever 6 to stop at any position after rotation.

[0049] The first bearing 223, the second bearing 224, and the fourth bearing are all self-sealing bearings to prevent oil from entering the bearing interior.

[0050] Specifically, such as Figure 4 and 7The oil conveying structure is installed on the inner wall of the annular cavity 201. It includes an inner sleeve 572 and an outer sleeve 573 connected by a spring 571. The inner sleeve 572 and the outer sleeve 573 are sealed together. The outer sleeve 573 is fixed to the inner wall of the annular cavity 201 by a mounting bracket 57. The inner sleeve 572 is connected to an oil suction pipe 58 and an oil injection pipe 59. The end of the oil injection pipe 59 is connected to an oil injection hole 74. The oil inlet end of the oil suction pipe 58 is located at the bottom of the annular cavity 201. One-way valve structure one and one-way valve structure two are respectively provided on the oil suction pipe 58 and the oil injection pipe 59. A cam 56 is installed at the end of the second rotating rod 5. The cam 56 abuts against the end of the outer sleeve 573. The cam 56 rotates with the second rotating rod 5 and periodically squeezes the inner sleeve 572, causing it to reciprocate within the outer sleeve 573, thereby realizing the function of sucking oil from the bottom of the annular cavity 201 and pumping oil to the oil injection ring 7.

[0051] The function of the one-way valve structure is to allow oil to be drawn into the oil conveying structure only from the bottom of the annular cavity 201 and to prevent the oil from flowing back into the annular cavity 201. When the cam 56 pushes the inner sleeve 572 and the outer sleeve 573 to squeeze and compress each other, the one-way valve structure closes to prevent the oil from being discharged from the oil suction pipe 58. When the spring 571 pushes the inner sleeve 572 to reset and generate negative pressure, the one-way valve structure opens to draw in the clean oil from the bottom of the annular cavity 201.

[0052] The function of the second one-way valve structure is to allow oil to flow from the oil supply structure into the oil injection ring 7 in only one direction, and to prevent the oil in the oil injection ring from flowing back into the oil supply structure. When the inner sleeve 572 and the outer sleeve 573 are squeezed and compressed against each other, the second one-way valve structure opens, and the pressure pumps the oil through the oil injection pipe 59 into the annular groove 71 of the oil injection ring 7. When the inner sleeve 572 and the outer sleeve 573 are reset, the second one-way valve structure closes to prevent the oil in the oil injection ring from flowing back.

[0053] The one-way valve structure 1, one-way valve structure 2, and the oil delivery structure driven by cam 56 work together to automatically and continuously pump the lubricating oil collected at the bottom of the annular cavity 201 back to the oil injection ring 7 after filtration, thereby realizing the recycling of lubricating oil and solving the problem of waste and pollution caused by oil dripping in the background technology.

[0054] like Figure 9The present invention also provides a knitting machine, including a frame 8 on which the aforementioned needle cylinders are mounted; a control cabinet 81 is mounted on one side of the frame 8, and a control system is installed inside the frame 8; the control system is used to control the overall operation of the knitting machine, including the rotation of the needle cylinders, needle selection, knitting actions, etc., and can integrate the control of the start and stop of the motor 4 of the self-lubricating device 2 for the needle cylinders, realizing automated lubrication management. When the knitting machine is working, the needle cylinder body 1 rotates on the frame 8 to perform knitting operations. At the same time, according to a preset program or sensor signal, the motor 4 of the self-lubricating device 2 can be started through the control cabinet 81 to lubricate the needle cylinder body 1 at regular intervals or as needed, ensuring the stable operation of the knitting machine for a long time and effectively recovering and utilizing the lubricating oil.

[0055] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0056] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A needle cylinder comprising a needle cylinder body (1) and a self-lubricating device (2), the peripheral side of the needle cylinder body (1) is provided with needle grooves (10) equidistantly along an annular track, characterized in that: The self-lubricating device (2) is arranged at the bottom of the needle cylinder body (1); The self-lubricating device (2) comprises a ring body (20) abutting against the bottom end face of the needle cylinder body (1), an annular cavity (201) is formed on the outer peripheral side of the ring body (20), and an annular shell (21) is connected to the opening end of the annular cavity (201); An annular collecting groove is arranged on the upper surface of the ring body (20) directly below the needle groove (10), the collecting groove comprises an inclined first bottom surface (203) and a horizontal second bottom surface (204), and a through hole (205) is formed through the second bottom surface (204); An annular filter cavity (202) is recessed on the inner wall surface of the annular cavity (201), and the filter cavity (202) is communicated with the collecting groove through the through hole (205); An opening (211) is formed on one side of the annular shell (21), a rotatable wiping mechanism is arranged in the annular shell (21), and one side of the wiping mechanism passes through the opening (211) and is in contact with the needle cylinder body (1); An annular filter plate (3) is arranged between the annular cavity (201) and the filter cavity (202).

2. A syringe according to claim 1, wherein The annular shell (21) comprises an outer shell and an inner shell connected by a plurality of connecting rods (210), and the outer shell and the inner shell are both circular tubular structures; The opening (211) is formed on the inner shell, and a protruding limiting ring (212) is arranged on the bottom end outer wall surface of the inner shell and closely abuts against an inner wall surface of the collecting groove; An annular avoiding cavity (206) is recessed on the inner wall surface of the annular cavity (201) directly above the filter cavity (202), and protruding fixing rings one (207) are arranged on the two inner wall surfaces of the top opening end of the annular cavity (201); Protruding fixing rings two (213) are arranged on the opposite inner wall surfaces of the bottom ends of the outer shell and the inner shell, and the fixing rings two (213) and the fixing rings one (207) are connected by connecting bolts (216); Mounting grooves for mounting annular sealing rings (215) are arranged on the opposite sides of the fixing rings two (213) and the fixing rings one (207).

3. A syringe according to claim 2, wherein A ring-shaped boss (208) is arranged on the bottom side of the annular cavity (201); The filter plate (3) is inserted between the ring-shaped boss (208) and the annular cavity (201); A horizontal plate (31) is inserted into the avoiding cavity (206), a rubber layer one (34) is arranged on the bottom side of the horizontal plate (31), protruding portions (32) are arranged on the end portions of the horizontal plate (31) and closely abut against the inner wall surfaces of the avoiding cavity (206), and at least one positioning column (33) is arranged on the end portion of each protruding portion (32); A positioning insertion hole (30) for the positioning column (33) is arranged on the top end surface of the filter plate (3), and a rubber layer two is arranged on the bottom side of the positioning insertion hole (30); The end portions of the connecting bolts (216) extending into the avoiding cavity (206) abut against the upper surfaces of the horizontal plate (31).

4. A syringe according to claim 2, wherein Two opposite side walls of the fixed ring two (213) are provided with upwardly protruding annular side plates (214).

5. A syringe according to any one of claims 1-4, characterized in that The top of the annular shell (21) is fixed with an annular top cover (22) through a fixing bolt (23); The top cover (22) is provided with a bearing hole one (221) and a bearing hole two (222), the first bearing (223) and the second bearing (224) are respectively installed in the bearing hole one (221) and the bearing hole two (222), and the top of the bearing hole two (222) is provided with a sealing cover (225); The inner ring of the first bearing (223) is fitted with a first rotating rod (42), the inner ring of the second bearing (224) is fitted with a second rotating rod (5), and the top of the first rotating rod (42) is connected with a motor (4) through a shaft coupling (41); The outer sides of the first rotating rod (42) and the second rotating rod (5) are respectively fixed with a wiping roller and an oil dipping roller, the wiping roller and the oil dipping roller are in contact and rotate synchronously.

6. A syringe according to claim 5, wherein, The outer sides of the first rotating rod (42) and the second rotating rod (5) are respectively provided with a synchronous pulley one (43) and a synchronous pulley two (51), and the synchronous pulley one (43) and the synchronous pulley two (51) are connected through a synchronous belt; The inner wall surface of the annular cavity (201) is provided with a retainer (217), the end of the retainer (217) is provided with a third bearing, and the ends of the first rotating rod (42) and the second rotating rod (5) are respectively fitted in the inner rings of the two third bearings.

7. A syringe according to claim 5, wherein The wiping roller comprises a roller body one (45) connected to the outer side of the first rotating rod (42) through a connecting frame one (44), and the outer side of the roller body one (45) is provided with a flexible wiping layer (46); The oil dipping roller comprises a roller body two (53) connected to the outer side of the second rotating rod (5) through a connecting frame two (52), and the outer side wall of the roller body two (53) is provided with oil dipping grooves (54) equidistantly along an annular track; The roller body one (45) and the roller body two (53) are both in tubular structure; The top of the oil dipping roller is provided with an oil injection ring (7), the bottom side of the oil injection ring (7) is recessed upward to form an annular groove (71) clamped on the end of the roller body two (53), the inner bottom side of the annular groove (71) is connected with a resisting plate (73) abutting against the top end surface of the roller body two (53) through a column (72), and the oil injection ring (7) is interference-fitted on the top end of the roller body two (53); The bottom side of the annular groove (71) is provided with an oil injection hole (74) and an overflow hole (75), and the top end surface of the oil injection ring (7) is provided with a protruding annular stop flange (76) on the outer circumferential side wall.

8. A syringe according to claim 7, wherein The end of the first rotating rod (42) or the second rotating rod (5) is provided with a cam (56); The inner wall surface of the annular cavity (201) is provided with an oil conveying structure, the oil conveying structure comprises an inner sleeve (572) and an outer sleeve (573) connected through a spring (571), and the inner sleeve (572) and the outer sleeve (573) are sealingly sleeved; The outer sleeve (573) is fixed on the inner wall surface of the annular cavity (201) through a mounting frame (57). The inner sleeve (572) is communicated with an oil suction pipe (58) and an oil injection pipe (59), the end of the oil injection pipe (59) is communicated with an oil injection hole (74), and the oil inlet end of the oil suction pipe (58) is located at the bottom of the annular cavity (201); The oil suction pipe (58) and the oil injection pipe (59) are respectively provided with one-way valve structure one and one-way valve structure two.

9. A syringe according to claim 5, wherein, The top cover (22) is further provided with a bearing hole three, a fourth bearing is installed in the bearing hole three, an operating rod (6) is installed on the fourth bearing, a convex ring is arranged on the outer circumferential side of the operating rod (6), and a damping rubber layer matched with the inner wall surface of the bearing hole three is arranged on the outer circumferential side of the convex ring; One end of the operating rod (6) located in the annular shell (21) is provided with a cross rod (61), the end of the cross rod (61) is connected with a vertical extrusion rod (62), the extrusion rod (62) is in contact with the outer wall surface of the wiping roller, and the first bearing (223), the second bearing (224) and the fourth bearing are all self-sealing bearings.

10. A knitting machine characterised in that, A machine frame (8) is installed with the needle cylinder, a control cabinet (81) is installed on one side of the machine frame (8), and a control system is installed in the machine frame (8).

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