Upper needle cylinder transmission mechanism of circular knitting machine

Abstract

The utility model discloses a needle cylinder transmission mechanism on a circular knitting machine, which belongs to the field of circular knitting machines, and comprises a big tripod, a big tripod gear, a fixed disc, a bolt, a mandrel, a driving shaft, a bearing seat and a driving gear, the big tripod gear is rotatably arranged in the big tripod, and the top of the big tripod gear is detachably connected with the fixed disc through the bolt. A mandrel is fixed to the bottom of the fixing disc and connected with the upper needle cylinder, a bearing seat is fixed in the large tripod, a driving gear is fixed to the top end of the driving shaft and meshed with a gear of the large tripod, and the bottom end of the driving shaft penetrates through the bearing seat and the bottom wall of the large tripod to be connected with a driving source. According to the upper needle cylinder transmission mechanism of the circular knitting machine, the fixed disc detachably arranged with the large tripod gear is arranged, the mandrel is installed through the fixed disc, the traditional mode that the mandrel and the large tripod gear are integrally arranged is changed, and when the vertical position of the upper needle cylinder is changed, the position of the large tripod gear is not changed; and the meshing precision between the large tripod gear and the driving gear is ensured.

Description

Technical Field

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

[0002] A large circular knitting machine, scientifically named a circular weft knitting machine (or called a circular weft knitting machine). Due to the large number of loop-forming systems (referred to as the number of yarn feeding paths or loop-forming paths in enterprises, abbreviated as paths) of the large circular knitting machine, high rotational speed, high output, fast pattern change, good fabric quality, few processes, and strong product adaptability, it has developed rapidly.

[0003] The existing upper cylinder driving mechanism mainly drives the driving shaft to rotate through a motor. The driving shaft then drives the large tripod gear to rotate through the driving gear installed thereon. The large tripod gear is coaxially arranged with the barrel core shaft. The barrel core shaft and the bead disc are coaxially and fixedly installed. The upper cylinder is fixedly installed at the edge of the bead disc. Therefore, the upper cylinder can be driven to rotate after the motor is started. This causes the large tripod gear to follow the up and down offset when changing the up and down position of the upper cylinder, and further causes a displacement between the large tripod gear and the driving gear, affecting the meshing accuracy between the large tripod gear and the driving gear. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a cylinder driving mechanism on a large circular knitting machine to overcome at least one of the above defects in the prior art.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A cylinder driving mechanism on a large circular knitting machine provided by the utility model includes a large tripod, a large tripod gear, a fixed disk, a pin, a core shaft, a driving shaft, a bearing seat, and a driving gear. The large tripod gear is rotatably arranged in the large tripod. The top of the large tripod gear is detachably connected to the fixed disk through a pin. The bottom of the fixed disk is fixed with a core shaft, and the core shaft is connected to the upper cylinder. A bearing seat is fixed in the large tripod. The top end of the driving shaft is fixed with a driving gear, and the driving gear meshes with the large tripod gear. The bottom end of the driving shaft passes through the bearing seat and the bottom wall of the large tripod and is connected to a driving source.

[0007] Preferably, a through hole is formed in the middle of the large tripod gear. The fixed disk is provided with a plurality of first jacks at equal intervals along its circumference. The large tripod gear is provided with a plurality of second jacks at equal intervals along the circumference of the through hole. The bottom end of the pin passes through the first jack and the second jack and extends below the large tripod gear.

[0008] Preferably, a groove is formed at the top of the first jack. The top of the pin has a boss, and the boss is located in the groove, and the top surface of the boss is flush with the top surface of the groove.

[0009] Preferably, it further includes a pressing block. A plurality of pressing blocks are detachably connected to the top of the fixed disk, and the bottom wall of the pressing block abuts against the top wall of the boss.

[0010] Preferably, it further includes screws. A plurality of threaded grooves are formed in the top of the fixed plate. The screws pass through the pressing block and are screwed with the threaded grooves, detachably connecting the pressing block to the fixed plate.

[0011] Preferably, threaded grooves are formed on both opposite sides of each boss.

[0012] Preferably, a plurality of limiting pieces are arranged on the inner side wall of the large tripod, and the limiting pieces are located above the top wall of the large tripod gear.

[0013] Preferably, an annular groove is formed in the large tripod, and the large tripod gear is slidably connected to the annular groove.

[0014] Preferably, a plurality of wear-resistant pieces are fixed to the inner bottom wall of the annular groove, and the bottom wall of the large tripod gear contacts the top wall of the wear-resistant pieces.

[0015] Preferably, the plurality of wear-resistant pieces are equidistantly and spaced circumferentially along the annular groove.

[0016] The beneficial effects of the present utility model are as follows:

[0017] 1. By providing a fixed plate detachably arranged with the large tripod gear, the mandrel is installed through the fixed plate, changing the traditional way of integrally arranging the mandrel and the large tripod gear. When changing the up and down position of the upper syringe barrel, the position of the large tripod gear is not changed, ensuring the meshing accuracy between the large tripod gear and the driving gear.

[0018] 2. The detachable connection method between the fixed plate and the large tripod gear realized by the pin plays a guiding role when changing the up and down position of the upper syringe barrel, enabling the upper syringe barrel to vertically move up and down with the fixed plate, and avoiding the angular deviation of the upper syringe barrel.

[0019] 3. Through the cooperation of the boss and the groove, when the fixed plate moves upward, the pin will be driven to move upward.

[0020] 4. The boss is placed inside the groove to prevent the boss from protruding out of the groove and causing damage to the pin.

[0021] 5. The boss is pressed by the pressing block to ensure the connection stability between the fixed plate and the large tripod gear when it is not necessary to change the up and down position of the upper syringe barrel, and prevent the pin from falling off.

[0022] 6. By providing the limiting pieces, the up and down deviation of the large tripod gear is avoided.

[0023] 7. By providing the wear-resistant pieces, a stable contact surface is provided, reducing the transmission instability caused by uneven wear or changing contact surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model (the pressing block, screws, and limiting pieces are not shown).

[0025] Figure 2 is Figure 1 The enlarged structural schematic diagram of A in

[0026] Figure 3 is the top view structural schematic diagram of the present utility model (the pressing block, screw, and limiting piece are not shown).

[0027] Figure 4 is Figure 3 The sectional structural schematic diagram taken along the B-B direction in

[0028] Figure 5 is Figure 4 The enlarged structural schematic diagram of C in

[0029] Figure 6 is the top view structural schematic diagram of the present utility model.

[0030] Figure 7 is Figure 6 The enlarged structural schematic diagram of D in

[0031] Figure 8 is Figure 6 The enlarged structural schematic diagram of E in

[0032] Figure 9 is the three-dimensional structural schematic diagram of the fixed disk and the core shaft of the present utility model.

[0033] Figure 10 is Figure 9 The enlarged structural schematic diagram of F in

[0034] Figure 11 is the three-dimensional structural schematic diagram of the bolt of the present utility model.

[0035] Figure 12 is the top view structural schematic diagram of the large tripod gear of the present utility model.

[0036] The reference signs in the drawings are: 1 - core shaft, 2 - large tripod gear, 3 - fixed disk, 4 - bolt, 5 - large tripod, 6 - driving shaft, 7 - bearing seat, 8 - driving gear, 21 - through hole, 31 - first jack, 22 - second jack, 32 - groove, 41 - boss, 9 - pressing block, 10 - screw, 33 - thread groove, 11 - limiting piece, 51 - circular ring groove, 12 - wear-resistant piece. Specific embodiments

[0037] The present utility model will be further described below in conjunction with the drawings and specific embodiments.

[0038] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance. The driving gear and the large tripod gear in this embodiment both have teeth throughout the circle. Only part of the teeth of the large tripod gear in the drawings are shown schematically, which does not mean that the large tripod gear in this embodiment only has part of the teeth.

[0039] As Figures 1 to 12 shown, a kind of upper needle cylinder transmission mechanism on a circular knitting machine provided in this embodiment includes a large tripod 5, a large tripod gear 2, a fixed disk 3, a pin 4, a core shaft 1, a driving shaft 6, a bearing seat 7, and a driving gear 8. The large tripod gear 2 is rotatably arranged in the large tripod 5. The top of the large tripod gear 2 is detachably connected to the fixed disk 3 through the pin 4. The bottom of the fixed disk 3 is fixed with the core shaft 1, and the core shaft 1 is connected to the upper needle cylinder. The bearing seat 7 is fixed in the large tripod 5. The top end of the driving shaft 6 is fixed with the driving gear 8, and the driving gear 8 meshes with the large tripod gear 2. The bottom end of the driving shaft 6 passes through the bearing seat 7 and the bottom wall of the large tripod 5 and is connected to the driving source. During transmission, the driving source drives the driving shaft 6 to rotate, so that the driving gear 8 rotates, drives the large tripod gear 2 to rotate, and further drives the fixed disk 3 to rotate, so that the core shaft 1 rotates, driving the upper needle cylinder to rotate.

[0040] By providing the fixed disk 3 detachably arranged with the large tripod gear 2 and installing the core shaft 1 through the fixed disk 3, the traditional way of integrally arranging the core shaft 1 and the large tripod gear 2 is changed. When changing the up-and-down position of the upper needle cylinder, the position of the large tripod gear 2 is not changed, ensuring the meshing accuracy between the large tripod gear 2 and the driving gear 8. The detachable connection method between the fixed disk 3 and the large tripod gear 2 realized by the pin 4 plays a guiding role when changing the up-and-down position of the upper needle cylinder, enabling the upper needle cylinder to vertically displace up and down perpendicular to the fixed disk 3 and avoiding the angular deviation of the upper needle cylinder.

[0041] Among them, the middle part of the large tripod gear 2 has a through hole 21. The fixed disk 3 is provided with a number of first insertion holes 31 at equal intervals along its circumference. The large tripod gear 2 is provided with a number of second insertion holes 22 at equal intervals along the circumference of the through hole 21. The bottom end of the pin 4 passes through the first insertion hole 31 and the second insertion hole 22 and extends below the large tripod gear 2. Since the length of the pin 4 is greater than the sum of the depths of the first insertion hole 31 and the second insertion hole 22, when the fixed disk 3 and the upper syringe move upward, the pin 4 is driven to move upward. The fixed disk 3 moves upward away from the large tripod gear 2. Through the cooperation and guidance of the pin 4 and the second insertion hole 22, the accuracy of the syringe is ensured. And because the volume and weight of the large tripod gear 2 are very large, when the fixed disk 3 moves upward to drive the pin 4 away from the second insertion hole 22, the large tripod gear 2 will not be dragged to move upward and deviate.

[0042] Among them, the top of the first insertion hole 31 has a groove 32. The top of the pin 4 has a boss 41. The boss 41 is located in the groove 32, and the top surface of the boss 41 is flush with the top surface of the groove 32. Through the cooperation of the boss 41 and the groove 32, when the fixed disk 3 moves upward, the pin 4 will be driven to move upward. The boss 41 is placed inside the groove 32 to prevent the boss 41 from protruding from the groove 32 and causing damage to the pin 4.

[0043] Among them, it also includes a pressing block 9. A number of pressing blocks 9 are detachably connected to the top of the fixed disk 3. The bottom wall of the pressing block 9 abuts against the top wall of the boss 41. By pressing the boss 41 with the pressing block, when it is not necessary to change the up and down position of the upper syringe, the connection stability between the fixed disk 3 and the large tripod gear 2 is ensured, and the pin 4 is prevented from falling off. When it is necessary to change the up and down position of the upper syringe, the pressing block 9 is removed to remove the limiting effect on the boss 41.

[0044] Among them, it also includes a screw 10. A number of threaded grooves 33 are provided on the top of the fixed disk 3. The screw 10 passes through the pressing block 9 and is screwed with the threaded groove 33 to detachably connect the pressing block 9 to the fixed disk 3. By using the method of locking with the screw 10, the pressing block 9 is convenient to disassemble and assemble and has a reliable connection.

[0045] Among them, each of the opposite sides of the boss 41 has a threaded groove 33. By distributing the threaded grooves 33 on the opposite sides of the boss 41 and combining with the setting of the screw 10, the pressing block 9 is stably locked, ensuring stable abutting and limiting of the boss 41.

[0046] Among them, a number of limiting pieces 11 are provided on the inner side wall of the large tripod 5. The limiting pieces 11 are located above the top wall of the large tripod gear 2. By providing the limiting pieces 11, the large tripod gear 2 is prevented from moving up and down.

[0047] Among them, the large tripod 5 has an annular groove 51, and the large tripod gear 2 is rotatably arranged in the annular groove 51. A plurality of wear-resistant pieces 12 are fixed on the inner bottom wall of the annular groove 51. The bottom wall of the large tripod gear 2 contacts the top wall of the wear-resistant pieces 12, and the plurality of wear-resistant pieces 12 are equidistantly spaced along the circumferential direction of the annular groove 51. The arrangement of the wear-resistant pieces 12 provides a stable contact surface, reducing the unstable transmission phenomenon caused by uneven wear or changes in the contact surface.

[0048] 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 recorded in the foregoing embodiments, or perform equivalent replacements on 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 embodiments of the present invention.

Claims

1. A cylinder drive mechanism on a circular knitting machine, characterized in that: It includes a large tripod, a large tripod gear, a fixed disk, a pin, a core shaft, a driving shaft, a bearing seat, and a driving gear; The large tripod gear is rotatably arranged in the large tripod; The top of the large tripod gear is detachably connected with a fixed disk through a pin; The core shaft is fixed to the bottom of the fixed disk, and the core shaft is connected with the upper cylinder; The bearing seat is fixed in the large tripod, the driving gear is fixed to the top end of the driving shaft, the driving gear meshes with the large tripod gear, and the bottom end of the driving shaft passes through the bearing seat and the bottom wall of the large tripod and is connected with the driving source.

2. The cylinder drive mechanism on a circular knitting machine according to claim 1, characterized in that: The middle part of the large tripod gear has a through hole; A plurality of first jacks are equidistantly spaced along the circumference of the fixed disk; A plurality of second jacks are equidistantly spaced along the circumference of the through hole of the large tripod gear; The bottom end of the pin passes through the first jack and the second jack and extends below the large tripod gear.

3. The cylinder drive mechanism on a circular knitting machine according to claim 2, characterized in that: The top of the first jack has a groove; The top of the pin has a boss; The boss is located in the groove, and the top surface of the boss is flush with the top surface of the groove.

4. The cylinder drive mechanism on a circular knitting machine according to claim 3, characterized in that: It further includes a pressing block; A plurality of pressing blocks are detachably connected to the top of the fixed disk; The bottom wall of the pressing block abuts against the top wall of the boss.

5. The cylinder drive mechanism on a circular knitting machine according to claim 4, characterized in that: It further includes a screw; A plurality of threaded grooves are formed in the top of the fixed disk; The screw passes through the pressing block and is screwed with the threaded groove to detachably connect the pressing block to the fixed disk.

6. The cylinder drive mechanism on a circular knitting machine according to claim 5, characterized in that: Each side of the opposite sides of each boss has the threaded groove.

7. The cylinder drive mechanism on a circular knitting machine according to claim 1, characterized in that: A plurality of limiting pieces are arranged on the inner side wall of the large tripod, and the limiting pieces are located above the top wall of the large tripod gear.

8. The cylinder drive mechanism on a circular knitting machine according to claim 1, characterized in that: The large tripod has an annular groove, and the large tripod gear is rotatably arranged in the annular groove.

9. The cylinder drive mechanism on a circular knitting machine according to claim 8, characterized in that: A plurality of wear-resistant pieces are fixed to the inner bottom wall of the annular groove, and the bottom wall of the large tripod gear contacts the top wall of the wear-resistant pieces.

10. The cylinder drive mechanism on a circular knitting machine according to claim 9, characterized in that: A plurality of the wear-resistant pieces are equidistantly spaced along the circumference of the annular groove.

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