Weft knitting machine with needle cylinder convenient to replace and replacing method of weft knitting machine

Abstract

The invention belongs to the technical field of weft knitting machines, particularly relates to a weft knitting machine convenient for replacing a needle cylinder and a replacing method thereof, and aims to solve the problems that the needle cylinder of a circular knitting machine is very complicated to replace, that is, a plurality of persons need to assist in lifting a yarn nozzle by using a rope, and bolts need to be screwed respectively to detach all triangular seats, so that time and labor are wasted, the replacing efficiency is low, and the machine stopping time is long. According to the technical scheme, the device comprises a base ring, four L-shaped supporting legs are fixedly arranged at the bottom of the base ring in an annular array mode, and universal wheels facilitating equipment displacement are fixedly installed at the bottoms of the L-shaped supporting legs. The needle cylinder replacing process is convenient, fast and efficient, the machine stopping time is greatly shortened, equipment can be put into production again more quickly, therefore, the overall production efficiency is improved, the stability and safety of the equipment are improved, the downtime caused by equipment failures or improper operation is shortened, and the production continuity and stability are further guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of weft knitting machines, and in particular to a weft knitting machine convenient for replacing a needle cylinder and a replacement method thereof. Background Art

[0002] A weft knitting machine is a machine that produces fabrics through weft knitting technology. Weft knitting produces fabrics by the forward and backward movement of yarns, forming a layer and a loop on the fabric with a continuous thread. It can produce both fabric yards and special-shaped garments such as circular fabrics, and can also be used to produce shaped garments and high-sag fabrics. Generally, according to the characteristics of the knitting mechanism of the weft knitting machine and the type of fabric produced, it is divided into three categories: circular weft knitting machines, circular sock machines, and flat knitting machines. Among them, circular weft knitting machines are also called large circular knitting machines, and the needle beds are cylindrical or disc-shaped, mainly used for producing cylindrical weft knitted fabrics.

[0003] At present, the replacement of the needle cylinder of a circular weft knitting machine is very cumbersome. That is, it requires multiple people to assist in using ropes to lift the yarn nozzles, and it is also necessary to separately unscrew the bolts to remove all the triangular seats, which is time-consuming and laborious, with low replacement efficiency and a long shutdown time, which is not conducive to improving production efficiency.

[0004] In view of the above problems, the present invention document proposes a weft knitting machine convenient for replacing a needle cylinder and a replacement method thereof to solve the above problems. Summary of the Invention

[0005] The present invention provides a weft knitting machine convenient for replacing a needle cylinder and a replacement method thereof, which solves the disadvantages in the prior art that the replacement of the needle cylinder of a circular weft knitting machine is very cumbersome, that is, it requires multiple people to assist in using ropes to lift the yarn nozzles, and it is also necessary to separately unscrew the bolts to remove all the triangular seats, which is time-consuming and laborious, with low replacement efficiency and a long shutdown time, which is not conducive to improving production efficiency.

[0006] The present invention provides the following technical solutions:

[0007] A weft knitting machine convenient for replacing a needle cylinder, comprising:

[0008] A base ring, at the bottom of which four L-shaped legs are fixedly arranged in an annular array. The bottom of the L-shaped legs is fixedly installed with universal wheels for facilitating the displacement of the device. An inner bearing ring is fixedly arranged on the inner wall of the base ring. The inner ring of the bearing ring is welded with a support ring. A needle cylinder ring is arranged on the top of the support ring. A top frame is arranged above the base ring. At the bottom of the top frame, a plurality of connecting rods are fixedly arranged in an annular array. The bottom ends of the plurality of connecting rods are fixedly provided with the same yarn nozzle ring frame. At the bottom of the yarn nozzle ring frame, a plurality of yarn nozzles are detachably arranged in an annular array. Below the yarn nozzle ring frame, there is a triangular seat ring frame. The top of the triangular seat ring frame is fixedly connected to the outer wall of the yarn nozzle ring frame through a plurality of L-shaped connecting frames. At the bottom of the triangular seat ring frame, a plurality of triangular seats for surrounding the outer wall of the needle cylinder ring are detachably arranged in an annular array;

[0009] The leveling and strengthening component is arranged on the L-shaped leg and is used for the stable and horizontal placement of the equipment for use;

[0010] The stable lifting component is arranged between the base ring and the top frame and is used to drive the yarn nozzle ring frame and the cam box ring frame to lift to facilitate the replacement of the cylinder ring;

[0011] The positioning and installation component is arranged on the support ring and is used to facilitate the positioning and installation of the cylinder ring.

[0012] In a possible design, the leveling and strengthening component includes two threaded rods symmetrically and fixedly arranged at the bottom of the L-shaped leg. The universal wheels are located between the corresponding two threaded rods. A matching hollow support foot is threadedly connected to the threaded rod. Reinforcing pieces are welded on both sides of the hollow support foot. Reserved holes for reinforcement with the ground by using bolts are arranged on the reinforcing pieces. A buffer gasket is fixedly arranged at the bottom of the hollow support foot. Multiple through holes for the corresponding threaded rod and bolt to penetrate are arranged on the buffer gasket.

[0013] In a possible design, the stable lifting component includes two electric push rods symmetrically and fixedly installed between the top of the base ring and the bottom of the top frame. Two rectangular telescopic sleeves for improving the support stability are symmetrically and fixedly arranged at the top of the base ring. The other end of the rectangular telescopic sleeve is fixedly connected to the bottom of the top frame. The telescopic range of the rectangular telescopic sleeve is the same as that of the electric push rod.

[0014] In a possible design, the positioning and installation component includes first hexagon socket head cap screws threadedly connected to four first threaded holes on the support ring. The top end of the first hexagon socket head cap screw penetrates through the corresponding first threaded hole and is threadedly connected to the first threaded groove corresponding to the bottom of the cylinder ring. Two positioning insertion rods for assisting in aligning the first threaded hole and the corresponding first threaded groove are symmetrically and fixedly arranged at the bottom of the cylinder ring. Positioning insertion holes for inserting the corresponding positioning insertion rods are arranged on the support ring.

[0015] In a possible design, the top end of the yarn nozzle is connected to the bottom of the yarn nozzle ring frame through two third hexagon socket head cap screws.

[0016] In a possible design, a plug block is fixedly arranged at the top of the cam box. A slot for inserting the corresponding plug block is arranged at the bottom of the cam box ring frame. A second hexagon socket head cap screw is threadedly connected to the second threaded hole on the side wall of the slot. The second hexagon socket head cap screw penetrates through the corresponding second threaded hole and is threadedly connected to the second threaded groove on the side wall of the plug block.

[0017] In a possible design, two protective doors are rotatably installed between adjacent two L-shaped legs through a plurality of hinges. A handle for facilitating opening and closing is fixedly arranged on the protective door.

[0018] A replacement method for a weft knitting machine with a conveniently replaceable syringe, comprising the following steps:

[0019] S1. Before replacement, first ensure that the weft knitting machine has completely stopped running and cut off the power supply to ensure operation safety. Clean the sundries around the weft knitting machine to ensure sufficient operation space. Check whether the specifications and models of the new syringe match the weft knitting machine, ensure there is no damage, and prepare the required tools, such as hexagon wrenches, adjustable wrenches, screwdrivers, etc., for disassembling and installing bolts;

[0020] S2. Hold the handle on the protective door and rotate it open through the hinge to expose the internal structure for syringe replacement operation. After starting the electric push rod, make it drive the top frame to rise. Since the connecting rod connects the top frame and the yarn nozzle ring frame, and the L-shaped connecting frame connects the yarn nozzle ring frame and the cam box ring frame, the yarn nozzle ring frame and the cam box ring frame will rise smoothly accordingly, and the rectangular telescopic sleeve will expand and contract synchronously to improve the support stability. Rise to a suitable height to leave enough space for the replacement of the syringe ring;

[0021] S3. Use a hexagon wrench to screw out all the first hexagon bolts to separate the syringe ring from the support ring. After removing the syringe ring, check the integrity of the support ring and other machine parts, and use a compressed air nozzle to blow off the flying fibers, then wipe off the oil stains and other impurities with cotton yarn. When installing the new syringe ring, align the positioning plug at the bottom of the new syringe ring with the positioning socket on the support ring and insert it. Assist the first threaded hole and the corresponding first threaded groove to align, and then use a hexagon wrench to screw all the first hexagon bolts into the corresponding first threaded hole and first threaded groove to complete the positioning installation of the syringe ring;

[0022] S4. If a single yarn nozzle needs to be replaced, use a hexagon wrench to screw out the corresponding third hexagon bolt, remove the yarn nozzle from the bottom of the yarn nozzle ring frame, and then install the new yarn nozzle to the bottom of the yarn nozzle ring frame through the corresponding third hexagon bolt; if a single cam box needs to be replaced, screw out the corresponding second hexagon bolt to make the insert block disengage from the slot, remove the cam box from the bottom of the cam box ring frame, and then insert the insert block at the top of the new cam box into the slot at the bottom of the cam box ring frame. Use a hexagon wrench to screw in the second hexagon bolt to make it threadedly connected with the second threaded groove on the side wall of the insert block to complete the installation of the new cam box. Then control the electric push rod to contract, driving the top frame, the yarn nozzle ring frame and the cam box ring frame to descend to a suitable working position;

[0023] S5. After installation, check whether all bolts are tightened to ensure there is no loosening phenomenon. Check whether all parts are installed in place without omission or damage. After reconnecting the power supply, start the weft knitting machine for a trial run and observe the rotation of the syringe to ensure that everything is normal.

[0024] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the present invention.

[0025] The beneficial effects of the present invention are as follows:

[0026] Through the design of the stable lifting component, the present invention can easily drive the overall lifting of the yarn nozzle ring frame and the cam box ring frame, providing sufficient space for the replacement of the cylinder ring and avoiding the cumbersome operation of using ropes to lift the yarn nozzle with the assistance of multiple people in the traditional method; the precise design of the positioning and installation component enables the cylinder ring to be quickly and accurately positioned and installed on the support ring, greatly shortening the cylinder replacement time and improving the replacement efficiency.

[0027] Through the setting of the leveling and strengthening component, the present invention ensures the stability of the equipment when placed horizontally, effectively preventing the shaking and displacement of the equipment during operation and improving the safety and stability of the equipment; the design of the protective door not only protects the internal components of the equipment from external interference and damage, but also facilitates the daily maintenance and repair work of the operator through the convenient opening and closing design of the handle.

[0028] In the present invention, the cam box on the cam box ring frame realizes the detachable design through the cooperation of the insertion block and the slot and the fixation of the second inner hexagon bolt, facilitating the quick disassembly and installation of a single cam box. The yarn nozzle is connected to the bottom of the yarn nozzle ring frame through the third inner hexagon bolt, also realizing the detachable design, facilitating the replacement and maintenance of a single yarn nozzle, and improving the flexibility and applicability of the equipment.

[0029] In the present invention, the cylinder replacement process is convenient and efficient, greatly shortening the downtime, enabling the equipment to be put back into production faster, thereby improving the overall production efficiency. The improvement of the stability and safety of the equipment also reduces the downtime caused by equipment failures or improper operations, further ensuring the continuity and stability of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a three-dimensional structural schematic diagram of a weft knitting machine for conveniently replacing a cylinder provided by an embodiment of the present invention;

[0031] Figure 2 is a schematic diagram of the separation structure of the top frame and the base ring of a weft knitting machine for conveniently replacing a cylinder provided by an embodiment of the present invention;

[0032] Figure 3 is a schematic diagram of the base ring structure of a weft knitting machine for conveniently replacing a cylinder provided by an embodiment of the present invention;

[0033] Figure 4 is a schematic diagram of the installation structure of the cylinder ring and the support ring of a weft knitting machine for conveniently replacing a cylinder provided by an embodiment of the present invention;

[0034] Figure 5 Schematic diagram of the yarn nozzle ring frame and the cam box ring frame of a weft knitting machine with a conveniently replaceable cylinder according to an embodiment of the present invention;

[0035] Figure 6 Schematic diagram of the installation structure of a single cam box and the cam box ring frame of a weft knitting machine with a conveniently replaceable cylinder according to an embodiment of the present invention;

[0036] Figure 7 Schematic diagram of the L-shaped leg structure of a weft knitting machine with a conveniently replaceable cylinder according to an embodiment of the present invention;

[0037] Figure 8 Schematic diagram of the disassembled structure of the leveling and reinforcement assembly of a weft knitting machine with a conveniently replaceable cylinder according to an embodiment of the present invention.

[0038] Reference numerals: 1, base ring; 2, L-shaped leg; 3, universal wheel; 4, threaded rod; 5, hollow foot; 6, reinforcement piece; 7, reserved hole; 8, buffer gasket; 9, hinge; 10, protective door; 11, handle; 12, bearing ring; 13, support ring; 14, cylinder ring; 15, first hexagon socket head cap screw; 16, first threaded hole; 17, first threaded groove; 18, positioning plug; 19, positioning socket; 20, top frame; 21, connecting rod; 22, yarn nozzle ring frame; 23, yarn nozzle; 24, third hexagon socket head cap screw; 25, L-shaped connecting frame; 26, cam box ring frame; 27, cam box; 28, insertion block; 29, insertion slot; 30, second hexagon socket head cap screw; 31, second threaded hole; 32, second threaded groove; 33, electric push rod; 34, rectangular telescopic sleeve. Detailed implementation manners

[0039] The embodiments of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention.

[0040] In the description of the embodiments of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connection", "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "communication" can be a direct communication or an indirect communication through an intermediate medium. Among them, "fixing" means that they are connected to each other and the relative position relationship after connection remains unchanged. The orientation terms mentioned in the embodiments of the present invention, for example, "inside", "outside", "top", "bottom", etc., are only with reference to the direction of the accompanying drawings. Therefore, the orientation terms used are for better and clearer description and understanding of the embodiments of the present invention, rather than indicating or implying that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present invention.

[0041] Embodiment 1

[0042] Please refer to Figure 1-8 , a weft knitting machine with a conveniently replaceable syringe barrel, comprising:

[0043] The base ring 1 (material: Q235 carbon steel) serves as the support foundation of the entire device. Four L-shaped legs 2 made of 304 stainless steel are fixedly arranged at the bottom of the base ring 1 in an annular array to provide stable support for the device. A universal wheel 3 (polyurethane wheel surface, with brakes) is fixedly installed at the bottom of the L-shaped leg 2, facilitating the movement and positioning of the device, improving the flexibility and convenience of use of the device. A bearing ring 12 is fixedly arranged on the inner wall of the base ring 1, and a support ring 13 made of Q235 carbon steel is welded to its inner ring. The bearing ring 12 allows the support ring 13 and the syringe barrel ring 14 made of 40Cr alloy steel thereon to rotate freely to adapt to different requirements during the knitting process of the weft knitting machine. The syringe barrel ring 14 is arranged at the top of the support ring 13 and is used for installing and fixing the syringe barrel, which is a key component for the weft knitting machine to carry out knitting work. The top frame 20 is connected to the yarn nozzle ring frame 22 through a connecting rod 21. A plurality of yarn nozzles 23 made of Cr12MoV die steel are detachably arranged at the bottom of the yarn nozzle ring frame 22 in an annular array. The yarn nozzles 23 are used to guide the yarn into the syringe barrel for knitting, and their detachable design facilitates replacement and maintenance. A triangular seat ring frame 26 is arranged below the yarn nozzle ring frame 22, and its top is fixedly connected to the outer wall of the yarn nozzle ring frame 22 through an L-shaped connecting frame 25. A plurality of triangular seats 27 made of GCr15 bearing steel are detachably arranged at the bottom of the triangular seat ring frame 26 in an annular array, which are used to surround the outer wall of the syringe barrel ring 14 and provide support to ensure the stability of the syringe barrel during rotation;

[0044] Two protective doors 10 are rotatably installed between two adjacent L-shaped legs 2 through a plurality of hinges 9. A handle 11 convenient for opening and closing is fixedly arranged on the protective door 10. The protective door 10 can prevent foreign objects from entering the device and is convenient for maintenance personnel to operate.

[0045] The leveling and reinforcement assembly is arranged on the L-shaped leg 2 and is used for the device to be stably placed horizontally. The leveling and reinforcement assembly includes two threaded rods 4 symmetrically and fixedly arranged at the bottom of the L-shaped leg 2. The universal wheel 3 is located between the corresponding two threaded rods 4. A matching hollow foot 5 is threadedly connected to the threaded rod 4. Reinforcement pieces 6 made of Q235 carbon steel are welded on both sides of the hollow foot 5. Reserved holes 7 for reinforcement with the ground by using bolts are arranged on the reinforcement pieces 6. A buffer gasket 8 is fixedly arranged at the bottom of the hollow foot 5. A plurality of through holes for the corresponding threaded rod 4 and the bolt to penetrate are arranged on the buffer gasket 8. By respectively rotating the hollow foot 5 on the threaded rod 4, the height of the corresponding hollow foot 5 can be adjusted until it contacts the ground, thereby realizing the leveling of the device. After the device is leveled, bolts are used to pass through the reserved holes 7 of the reinforcement piece 6 to fix the reinforcement piece 6 to the ground to ensure the stability of the device. The buffer gasket 8 plays a buffering role to reduce the impact of the device vibration on the ground.

[0046] A stable lifting assembly is arranged between the base ring 1 and the top frame 20 and is used to drive the yarn nozzle ring frame 22 and the cam box ring frame 26 to lift so as to facilitate the replacement of the cylinder ring 14. The stable lifting assembly includes two electric push rods 33 symmetrically and fixedly installed between the top of the base ring 1 and the bottom of the top frame 20. Two rectangular telescopic sleeves 34 made of Q235 carbon steel for improving the support stability are symmetrically and fixedly arranged at the top of the base ring 1. The other end of the rectangular telescopic sleeve 34 is fixedly connected to the bottom of the top frame 20. The telescopic range of the rectangular telescopic sleeve 34 is the same as that of the electric push rod 33. After starting the electric push rod 33, the top frame 20 and the yarn nozzle ring frame 22 and the cam box ring frame 26 thereon can be driven to lift stably. When replacing the cylinder ring 14, the yarn nozzle ring frame 22 and the cam box ring frame 26 are lifted to facilitate the operation. After the replacement is completed, they are lowered to restore the normal working state.

[0047] A positioning and installation assembly is arranged on the support ring 13 and is used to facilitate the positioning and installation of the cylinder ring 14. The positioning and installation assembly includes first hexagon socket head cap screws 15 threadedly connected to four first threaded holes 16 on the support ring 13. The top end of the first hexagon socket head cap screw 15 penetrates through the corresponding first threaded hole 16 and is threadedly connected to a first threaded groove 17 corresponding to the bottom of the cylinder ring 14. Two positioning plug rods 18 made of 40Cr steel for assisting in aligning the first threaded hole 16 and the corresponding first threaded groove 17 are symmetrically and fixedly arranged at the bottom of the cylinder ring 14. Positioning sockets 19 for inserting the corresponding positioning plug rods 18 are arranged on the support ring 13. When installing the cylinder ring 14, first insert the positioning plug rod 18 into the positioning socket 19 to achieve preliminary positioning. Then, use a hexagon socket wrench to tighten all the first hexagon socket head cap screws 15 to fix the cylinder ring 14 on the support ring 13.

[0048] Embodiment 2

[0049] Improved on the basis of Embodiment 1:

[0050] Please refer to Figure 5-6 , the top end of the yarn nozzle 23 is connected to the bottom of the yarn nozzle ring frame 22 through two third hexagon socket head cap screws 24. If it is necessary to replace a single yarn nozzle 23, use a hexagon socket wrench to unscrew the corresponding third hexagon socket head cap screw 24, remove the yarn nozzle from the bottom of the yarn nozzle ring frame 22, and then install the new yarn nozzle to the bottom of the yarn nozzle ring frame 22 through the corresponding third hexagon socket head cap screw 24;

[0051] A plug 28 is fixedly arranged at the top of the triangular seat 27. A slot 29 for plugging the corresponding plug 28 is arranged at the bottom of the triangular seat ring frame 26. A second internal hexagonal bolt 30 is threadedly connected to the second threaded hole 31 on the side wall of the slot 29. The second internal hexagonal bolt 30 penetrates through the corresponding second threaded hole 31 and is threadedly connected to the second threaded groove 32 on the side wall of the plug 28 made of GCr15 steel. If it is necessary to replace a single triangular seat 27, unscrew the corresponding second internal hexagonal bolt 30 to separate the plug 28 from the slot 29, remove the triangular seat 27 from the bottom of the triangular seat ring frame 26, then insert the plug 28 at the top of the new triangular seat 27 into the slot 29 at the bottom of the triangular seat ring frame 26, and use an internal hexagonal wrench to screw in the second internal hexagonal bolt 30 so that it is threadedly connected to the second threaded groove 32 on the side wall of the plug 28 to complete the installation of the new triangular seat 27.

[0052] A replacement method for a weft knitting machine with a conveniently replaceable syringe includes the following steps:

[0053] S1. Before replacement, first ensure that the weft knitting machine has completely stopped running and cut off the power supply to ensure operation safety. Clean the sundries around the weft knitting machine to ensure sufficient operation space. Check whether the specifications and models of the new syringe match the weft knitting machine, ensure there is no damage, and prepare the required tools such as internal hexagonal wrenches, adjustable wrenches, screwdrivers, etc. for disassembling and installing bolts.

[0054] S2. Hold the handle 11 on the protective door 10 and rotate the protective door 10 open through the hinge 9 to expose the internal structure for syringe replacement operation. After starting the electric push rod 33, make it drive the top frame 20 to rise. Since the connecting rod 21 connects the top frame 20 and the yarn nozzle ring frame 22, and the L-shaped connecting frame 25 connects the yarn nozzle ring frame 22 and the triangular seat ring frame 26, the yarn nozzle ring frame 22 and the triangular seat ring frame 26 will rise smoothly accordingly, and the rectangular telescopic sleeve 34 will expand and contract synchronously to improve the support stability. Rise to an appropriate height to leave enough space for the replacement of the syringe ring 14.

[0055] S3. Use an internal hexagonal wrench to unscrew all the first internal hexagonal bolts 15 to separate the syringe ring 14 from the support ring 13. After removing the syringe ring 14, check the integrity of the support ring 13 and other machine parts, and use a compressed air nozzle to blow off the flying fibers, and then wipe off the oil stains and other impurities with cotton yarn. When installing the new syringe ring 14, align the positioning insertion rod 18 at the bottom of the new syringe ring 14 with the positioning insertion hole 19 on the support ring 13 and insert it. Assist the first threaded hole 16 and the corresponding first threaded groove 17 to align, and then use an internal hexagonal wrench to screw all the first internal hexagonal bolts 15 into the corresponding first threaded hole 16 and first threaded groove 17 to complete the positioning installation of the syringe ring 14.

[0056] S4. If it is necessary to replace a single yarn guide 23, use an Allen wrench to loosen the corresponding third Allen bolt 24, remove the yarn guide from the bottom of the yarn guide ring holder 22, and then install the new yarn guide to the bottom of the yarn guide ring holder 22 through the corresponding third Allen bolt 24; if it is necessary to replace a single cam box 27, loosen the corresponding second Allen bolt 30, disengage the insertion block 28 from the slot 29, remove the cam box 27 from the bottom of the cam box ring holder 26, and then insert the insertion block 28 at the top of the new cam box 27 into the slot 29 at the bottom of the cam box ring holder 26. Use an Allen wrench to screw in the second Allen bolt 30 so that it is threadedly connected to the second thread groove 32 on the side wall of the insertion block 28 to complete the installation of the new cam box 27. Then, control the electric push rod 33 to contract, driving the top frame 20, the yarn guide ring holder 22, and the cam box ring holder 26 to descend to a suitable working position.

[0057] S5. After the installation is completed, check whether all bolts are tightened to ensure there is no loosening, and check whether all components are installed in place without omission or damage. After reconnecting the power supply, start the weft knitting machine for a trial run and observe the rotation of the needle cylinder to ensure that everything is normal.

[0058] However, as is well known to those skilled in the art, the working principle and wiring method of the electric push rod 33 are common knowledge and belong to conventional means or well-known common sense, so they will not be elaborated here. Those skilled in the art can make any selection according to their needs or convenience.

[0059] The schematic drawings in the specification of this application are only for illustrative purposes. The dimensions and shapes of the components shown therein are not actually limited, but only for a schematic representation. In the actual implementation process, the components can be reasonably configured and adjusted according to specific requirements and actual situations.

[0060] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, and all should be covered by the protection scope of the present invention; without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A weft knitting machine that is convenient for replacing needle cylinders, characterized in that: include: A base ring (1), wherein four L-shaped legs (2) are fixedly arranged in an annular array at the bottom of the base ring (1), a universal wheel (3) is fixedly installed at the bottom of the L-shaped legs (2) for facilitating the displacement of the device, a bearing ring (12) is fixedly arranged on the inner wall of the base ring (1), a support ring (13) is welded to the inner ring of the bearing ring (12), a syringe ring (14) is arranged on the top of the support ring (13), a top frame (20) is arranged above the base ring (1), and a plurality of connecting rods (20) are fixedly arranged in an annular array at the bottom of the top frame (20) 1), the bottom ends of the plurality of connecting rods (21) are fixedly provided with a same yarn mouth ring frame (22), the bottom of the yarn mouth ring frame (22) is provided with a plurality of yarn mouths (23) in a circular array and detachably arranged, a triangular seat ring frame (26) is provided below the yarn mouth ring frame (22), the top of the triangular seat ring frame (26) is fixedly connected to the outer wall of the yarn mouth ring frame (22) via a plurality of L-shaped connecting frames (25), and the bottom of the triangular seat ring frame (26) is provided with a plurality of triangular seats (27) in a circular array and detachably arranged for surrounding the outer wall of the syringe ring (14); A leveling reinforcement component is provided on the L-shaped support leg (2) and is used to stably place the device horizontally for use; A stable lifting assembly is arranged between the base ring (1) and the top frame (20) and is used to drive the yarn mouth ring frame (22) and the triangular seat ring frame (26) to rise and fall so as to facilitate the replacement of the needle cylinder ring (14); The positioning and installation assembly is arranged on the support ring (13) and is used to facilitate the positioning and installation of the syringe ring (14).

2. A weft knitting machine with convenient needle cylinder replacement according to claim 1, characterized in that: The leveling reinforcement assembly comprises two threaded rods (4) symmetrically fixedly arranged at the bottom of the L-shaped leg (2); the universal wheel (3) is located between the two corresponding threaded rods (4); a matching hollow support foot (5) is threadedly connected to the threaded rod (4); reinforcement sheets (6) are welded on both sides of the hollow support foot (5); the reinforcement sheet (6) is provided with a reserved hole (7) for reinforcement with the ground by using bolts; a buffer gasket (8) is fixedly arranged at the bottom of the hollow support foot (5); the buffer gasket (8) is provided with a plurality of through holes for corresponding threaded rods (4) and bolts to pass through.

3. A weft knitting machine with convenient needle cylinder replacement according to claim 1, characterized in that: The smooth lifting component comprises two electric push rods (33) symmetrically fixedly installed between the top of the base ring (1) and the bottom of the top frame (20); two rectangular telescopic sleeves (34) for improving support stability are symmetrically fixedly arranged on the top of the base ring (1); the other end of the rectangular telescopic sleeve (34) is fixedly connected to the bottom of the top frame (20); and the telescopic range of the rectangular telescopic sleeve (34) is consistent with that of the electric push rod (33).

4. A weft knitting machine with convenient needle cylinder replacement according to claim 1, characterized in that: The positioning and mounting assembly comprises a first hexagon socket bolt (15) threadedly connected to four first threaded holes (16) on the support ring (13); the top end of the first hexagon socket bolt (15) passes through the corresponding first threaded hole (16) and is threadedly connected to the first threaded groove (17) corresponding to the bottom of the syringe ring (14); two positioning rods (18) for assisting the alignment of the first threaded hole (16) and the corresponding first threaded groove (17) are symmetrically fixed at the bottom of the syringe ring (14); and a positioning socket (19) for plugging the corresponding positioning rod (18) is provided on the support ring (13).

5. A weft knitting machine with convenient needle cylinder replacement according to claim 1, characterized in that: The top end of the yarn mouth (23) is connected to the bottom end of the yarn mouth ring frame (22) via two third hexagon socket bolts (24).

6. A weft knitting machine with convenient needle cylinder replacement according to claim 1, characterized in that: An insert block (28) is fixedly arranged on the top of the triangular seat (27), and a slot (29) for inserting the corresponding insert block (28) is arranged on the bottom of the triangular seat ring frame (26), and a second hexagon socket bolt (30) is threadedly connected to a second threaded hole (31) on the side wall of the slot (29), and the second hexagon socket bolt (30) passes through the corresponding second threaded hole (31) and is threadedly connected to a second threaded groove (32) on the side wall of the insert block (28).

7. A weft knitting machine with convenient needle cylinder replacement according to claim 1, characterized in that: Two protective doors (10) are rotatably mounted between two adjacent L-shaped legs (2) via a plurality of hinges (9), and a handle (11) for easy opening and closing is fixedly arranged on the protective door (10).

8. A method for replacing a weft knitting machine that facilitates the replacement of a needle cylinder according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. Before replacement, make sure the weft knitting machine is completely stopped and the power is cut off to ensure safe operation. Clean up the debris around the weft knitting machine to ensure that there is enough space for operation. Check whether the specifications and models of the new needle cylinder match the weft knitting machine to ensure that there is no damage. Prepare the necessary tools, such as Allen wrench, adjustable wrench, and screwdriver, to remove and install the bolts. S2, hold the handle (11) on the protective door (10), rotate the protective door (10) through the hinge (9), expose the internal structure for the syringe replacement operation, start the electric push rod (33), and make it drive the top frame (20) to rise. Since the connecting rod (21) connects the top frame (20) and the yarn mouth ring frame (22), and the L-shaped connecting frame (25) connects the yarn mouth ring frame (22) and the triangular seat ring frame (26), the yarn mouth ring frame (22) and the triangular seat ring frame (26) will rise steadily accordingly, and the rectangular telescopic sleeve (34) will be synchronously extended and retracted to improve the support stability, rise to a suitable height, and leave enough space for the replacement of the syringe ring (14); S3. Use an Allen wrench to unscrew all the first Allen bolts (15) to separate the syringe ring (14) from the support ring (13). After removing the syringe ring (14), check the integrity of the support ring (13) and other parts, and use a compressed air nozzle to blow away the flying flowers, and then use cotton yarn to wipe off the oil and impurities. When installing a new syringe ring (14), align the positioning rod (18) at the bottom of the new syringe ring (14) with the positioning hole (19) on the support ring (13) and insert it to align the auxiliary first threaded hole (16) and the corresponding first threaded groove (17). Then use an Allen wrench to screw all the first Allen bolts (15) into the corresponding first threaded hole (16) and the first threaded groove (17) to complete the positioning installation of the syringe ring (14); S4. If a single yarn mouth (23) needs to be replaced, use an inner hexagonal wrench to unscrew the corresponding third inner hexagonal bolt (24), remove the yarn mouth from the bottom of the yarn mouth ring frame (22), and then install the new yarn mouth to the bottom of the yarn mouth ring frame (22) through the corresponding third inner hexagonal bolt (24); if a single triangular seat (27) needs to be replaced, unscrew the corresponding second inner hexagonal bolt (30), disengage the plug (28) from the slot (29), and remove the triangular seat (27) from the triangular seat ring frame ( 26), then remove the bottom of the new triangle seat (27), insert the plug (28) on the top of the new triangle seat (27) into the slot (29) at the bottom of the triangle seat ring frame (26), use an inner hexagonal wrench to screw in the second inner hexagonal bolt (30), so that it is threadedly connected with the second thread groove (32) on the side wall of the plug (28), and the installation of the new triangle seat (27) is completed. Then, the electric push rod (33) is controlled to retract, driving the top frame (20), the yarn mouth ring frame (22) and the triangle seat ring frame (26) to descend to a suitable working position; S5. After installation, check whether all bolts are tightened to ensure that there is no looseness, check whether all parts are installed in place without omission or damage, and after reconnecting the power, start the weft knitting machine for a test run, observe the rotation of the needle cylinder, and ensure that everything is normal.

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