A mechanical transmission device with variable speed ratio for knitting underwear machine

Abstract

The present invention relates to the field of mechanical transmission technology, specifically a mechanical transmission device with variable speed ratio for a knitting underwear machine, comprising a servo motor and a power output shaft; the output end of the servo motor is connected to a driving shaft, and a multi-stage speed regulation system is arranged between the driving shaft and the power output shaft; the multi-stage speed regulation system comprises a first-stage speed regulation mechanism, a second-stage speed regulation mechanism, and a third-stage speed regulation mechanism; the first-stage speed regulation mechanism and the second-stage speed regulation mechanism, and the second-stage speed regulation mechanism and the third-stage speed regulation mechanism are all controlled and rotated and connected. The device automatically performs multi-stage speed regulation control, and has the functions of high precision, stable operation and efficient operation.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical transmission, in particular to a mechanical transmission device with a variable speed ratio for a knitting underwear machine. Background Art

[0002] Knitting underwear machine is a kind of mechanical equipment specially used for producing knitted underwear, which is widely used in textile industry. It uses the needles on the needle cylinder or needle bed to weave through mechanical or electronic control system to form fabrics of various shapes and structures. The main types of knitting underwear machine include circular knitting machine and flat knitting machine. The working principle of knitting underwear machine is based on knitting technology, and the coil structure is formed by the up and down movement of the needle and the feeding of the yarn. Under the command of the control system, the needles on the needle cylinder or needle bed perform knitting actions according to the preset program. The yarn forms coils under the action of the needles, and multiple coils are connected to form fabrics. The control system can accurately control the movement of the needles, the feeding speed and tension of the yarn, as well as the pattern and structure of the knitting.

[0003] Among them, when the knitting underwear machine is running, it needs to be driven by a mechanical transmission device. The variable speed ratio mechanical transmission device is the key part to achieve machine speed adjustment and efficiency optimization. The existing mechanical transmission devices are divided into: gear transmission system, belt transmission system, hydraulic transmission system, etc.; when the above transmission systems are running and changing speed, they cannot be adjusted quickly and conveniently according to the power requirements of different time periods. At the same time, the speed change controllability is poor and the speed change range is limited;

[0004] Therefore, in view of the above-mentioned problems, the present technical solution proposes a mechanical transmission device with a variable speed ratio for a knitting underwear machine. Summary of the invention

[0005] The object of the present invention is to provide a mechanical transmission device with a variable speed ratio for a knitting underwear machine to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a mechanical transmission device with a variable speed ratio for a knitting underwear machine, comprising a servo motor and a power output shaft; the output end of the servo motor is connected to a driving shaft, and components or structures such as a main shaft, a needle cylinder, a needle bed, and a yarn feeding system of the knitting underwear machine are installed and connected to the power output shaft, so as to ensure the efficient and stable operation of the machine; a multi-stage speed regulating system is arranged between the driving shaft and the power output shaft, and the multi-stage speed regulating system is used to accurately control the speed adjustment during the process from the driving shaft to the power output shaft according to the power output shaft output power demand;

[0007] The multi-stage speed regulating system includes a first-stage speed regulating mechanism, a second-stage speed regulating mechanism, and a third-stage speed regulating mechanism; the first-stage speed regulating mechanism and the second-stage speed regulating mechanism, as well as the second-stage speed regulating mechanism and the third-stage speed regulating mechanism are all controlled and rotated in connection with each other. The first-stage speed regulating mechanism includes a two-way speed regulating component, one end of which is connected to the driving shaft, and the other end is connected to the second-stage speed regulating mechanism. Under the premise of not changing the output speed of the servo motor, the rotation direction of the driving shaft is changed by controlling the servo motor, and the gear ratio in the two-way speed regulating component is adjusted, so as to drive the second-stage speed regulating mechanism to run at different speeds;

[0008] The second-level speed regulating mechanism includes a mobile speed regulating assembly, one end of the mobile speed regulating assembly facing the first-level speed regulating mechanism is connected to the bidirectional speed regulating assembly, and the side away from the first-level speed regulating mechanism is connected to the third-level speed regulating mechanism set transmission, and the axial movement of the mobile speed regulating assembly is adjusted to control the meshing between gears of different sizes, thereby driving the third-level speed regulating mechanism to rotate at different speeds;

[0009] The Class III speed regulating mechanism includes a swing speed regulating assembly, which is swingably arranged between the partial structure of the mobile speed regulating assembly located on one side of the power output shaft. A transmission shaft is arranged in the middle of the swing speed regulating assembly, one end of the transmission shaft is fixedly connected to the power output shaft, and the two sides of the structure of the mobile speed regulating assembly located on one side of the power output shaft are movably sleeved on the transmission shaft, and the swing speed regulating assembly is controlled to swing and engage with the mobile speed regulating assembly on one side in a plug-in manner, thereby transferring the speed transmitted on the mobile speed regulating assembly to the transmission shaft, thereby controlling the power output shaft to rotate;

[0010] That is, by utilizing the multi-stage coordination among the bidirectional speed regulating component for direction conversion, the mobile speed regulating component for mobile engagement, and the swinging speed regulating component for swing engagement, the output speed of the servo motor is output in multiple stages, ensuring that it can be accurately applied to the high-precision speed requirements of the knitting underwear machine, thereby achieving precise adjustment of the transmission speed of the servo motor.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: by arranging a level I speed regulating mechanism, a level II speed regulating mechanism, and a level III speed regulating mechanism between the servo motor and the power output shaft, according to the speed requirements of different positions and structures of the knitting underwear machine when the power output shaft is running, the entire speed transmission process is divided into multiple stages, and then the bidirectional speed regulating components, the moving speed regulating components, and the swinging speed regulating components in the level I speed regulating mechanism, the level II speed regulating mechanism, and the level III speed regulating mechanism are utilized to perform precise segmentation control on the entire speed transmission, thereby ensuring that when faced with the driving requirements of the knitting underwear machine with different speed requirements, it can respond accurately, thereby greatly improving the controllability of the speed and the efficiency of the operation of the knitting underwear machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of a variable speed ratio mechanical transmission device of a knitting underwear machine from a first perspective;

[0013] Figure 2 A schematic diagram of the structure of a variable speed ratio mechanical transmission device for a knitting underwear machine from a second perspective;

[0014] Figure 3 It is a schematic diagram of the main structure of a mechanical transmission device with a variable speed ratio for a knitting underwear machine;

[0015] Figure 4 It is a schematic diagram of the structure of a variable speed ratio mechanical transmission device of a knitting underwear machine from a top view;

[0016] Figure 5 It is a side view structural schematic diagram of a mechanical transmission device with a variable speed ratio for a knitting underwear machine;

[0017] Figure 6 for Figure 1 A is a schematic diagram of the enlarged structure of the middle part;

[0018] Figure 7 for Figure 1 A schematic diagram of the enlarged structure of B;

[0019] Figure 8 for Figure 4 Schematic diagram of the enlarged structure of C in the middle;

[0020] Wherein: servo motor 10, I-level speed regulating mechanism 11, II-level speed regulating mechanism 12, III-level speed regulating mechanism 13, power output shaft 14, drive shaft 15, I-level speed regulating screw 16, I-level speed regulating box 17, I-level speed regulating spur gear 18, built-in speed regulating main gear 19, built-in speed regulating slave gear 20, external speed regulating ring gear 21, rotating positioning plate 22, tooth groove positioning rod 23, L-shaped connecting rod 24, I-level speed regulating motor 25, fixed installation column 26, positioning key 1 27, connecting shaft 28, II-level speed regulating screw 29, II-level speed regulating box 30, gear connecting rod 31, II The first stage front main gear 32, the second stage front main gear 33, the second stage rear main gear 34, the second stage rear main gear 35, the second stage front slave gear 36, the second stage front slave gear 37, the second stage rear slave gear 38, the second stage rear slave gear 39, the bottom plate 40, the third stage speed regulating gear cylinder 1 41, the third stage speed regulating main gear 42, the movable sleeve 43, the toggle tooth groove 44, the arc toggle ring 45, the swing rod 46, the swing rod groove 47, the third stage speed regulating motor 48, the toggle main gear 49, the toggle rack 50, the rod seat 51, the positioning key 2 52, and the transmission shaft 53. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0024] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0025] See also Figure 1-Figure 4 A mechanical transmission device with a variable speed ratio for a knitting underwear machine comprises a servo motor 10 and a power output shaft 14; a driving shaft 15 is connected to the output end of the servo motor 10, and components or structures such as a main shaft, a needle cylinder, a needle bed, and a yarn feeding system of the knitting underwear machine are installed and connected to the power output shaft 14 to ensure efficient and stable operation of the machine. A multi-stage speed regulation system is arranged between the driving shaft 15 and the power output shaft 14, and the multi-stage speed regulation system is used to accurately control the speed adjustment during the process from the driving shaft 15 to the power output shaft 14 according to the power output demand of the power output shaft 14;

[0026] The multi-stage speed regulating system includes a first-stage speed regulating mechanism 11, a second-stage speed regulating mechanism 12, and a third-stage speed regulating mechanism 13; the first-stage speed regulating mechanism 11 and the second-stage speed regulating mechanism 12, and the second-stage speed regulating mechanism 12 and the third-stage speed regulating mechanism 13 are all controlled and rotated in connection with each other. The first-stage speed regulating mechanism 11 includes a two-way speed regulating component, one end of which is connected to the driving shaft 15, and the other end is connected to the second-stage speed regulating mechanism 12. Under the premise of not changing the output speed of the servo motor 10, the servo motor 10 is controlled to change the rotation direction of the driving shaft 15, and the gear ratio in the two-way speed regulating component is adjusted, so as to drive the second-stage speed regulating mechanism 12 to run at different speeds;

[0027] The second-level speed regulating mechanism 12 includes a mobile speed regulating component, one end of the mobile speed regulating component facing the first-level speed regulating mechanism 11 is connected to the bidirectional speed regulating component, and the side away from the first-level speed regulating mechanism 11 is connected to the third-level speed regulating mechanism 13 in a transmission package, and the axial movement of the mobile speed regulating component is adjusted to control the meshing between gears of different sizes, thereby driving the third-level speed regulating mechanism 13 to rotate at different speeds;

[0028] The III-level speed regulating mechanism 13 includes a swing speed regulating component, which is swingably arranged between the partial structure of the mobile speed regulating component located on one side of the power output shaft 14. A transmission shaft 53 is arranged in the middle of the swing speed regulating component, and one end of the transmission shaft 53 is fixedly connected to the power output shaft 14. The two sides of the structure of the mobile speed regulating component located on one side of the power output shaft 14 are movably sleeved on the transmission shaft 53. By controlling the swing speed regulating component to swing and plug-in meshing with the mobile speed regulating component on one side, the speed transmitted on the mobile speed regulating component is transferred to the transmission shaft 53, thereby controlling the power output shaft 14 to rotate;

[0029] That is, by utilizing the multi-stage coordination among the bidirectional speed regulating component for direction conversion, the mobile speed regulating component for mobile engagement, and the swinging speed regulating component for swing engagement, the output speed of the servo motor 10 is output in multiple stages, thereby ensuring that it can be accurately applied to the high-precision speed requirements of the knitting underwear machine, thereby achieving precise adjustment of the transmission speed of the servo motor 10.

[0030] In the embodiment of the present invention, the servo motor 10 is configured as a motor capable of forward and reverse rotation, which generally includes an AC servo motor, a DC servo motor, a stepping servo motor, etc. The specific selection depends on the actual situation.

[0031] In one embodiment of the present invention, see Figure 1-Figure 5 , Figure 7The bidirectional speed regulating assembly includes a first-stage speed regulating screw 16 which is movable and limited in rotation and is mounted on the driving shaft 15. A built-in speed regulating main gear 19 is installed at the end of the first-stage speed regulating screw 16 away from the driving shaft 15. A group of built-in speed regulating slave gears 20 are meshed on one side of the built-in speed regulating main gear 19. A group of external speed regulating gear rings 21 are meshed on the outer side of the built-in speed regulating slave gear 20. A connecting shaft 28 is installed on the middle of the side of the built-in speed regulating slave gear 20 toward the moving speed regulating assembly. The connecting shaft 28 is connected to the moving speed regulating assembly. When the servo motor 10 drives the driving shaft 15 to rotate, it drives the built-in speed regulating main gear 19 to rotate. , and then control the built-in speed regulating slave gear 20 to rotate, thereby driving the built-in speed regulating slave gear 20 to control the external speed regulating gear ring 21 to rotate. When the built-in speed regulating slave gear 20 rotates, it synchronously drives the mobile speed regulating component to rotate under the connection of the connecting shaft 28. At this time, the rotation speed of the connecting shaft 28 is controlled by the meshing transmission speed of the built-in speed regulating main gear 19 and the built-in speed regulating slave gear 20. The built-in speed regulating main gear 19 is of the same size as the built-in speed regulating slave gear 20, and the rotation speed of the built-in speed regulating slave gear 20 is of the same size as the built-in speed regulating main gear 19 (the specific size is determined according to the actual use situation);

[0032] A positioning key 27 parallel to the axis is installed on the axial outer wall of the driving shaft 15. A positioning slide rail is provided on the inner wall of the first-stage speed regulating screw 16 corresponding to the positioning key 27. The positioning key 27 moves axially along the positioning slide rail to maintain the rotation-limiting connection between the first-stage speed regulating screw 16 and the driving shaft 15. That is, when the driving shaft 15 rotates, the first-stage speed regulating screw 16 is synchronously driven to rotate. A first-stage speed regulating box 17 is provided on one side of the top of the first-stage speed regulating screw 16. The first-stage speed regulating box 17 is provided with a first-stage speed regulating screw 16. The speed regulating part is rotated, and the speed regulating part includes a first-level speed regulating spur gear 18 meshing and rotating with the first-level speed regulating screw 16. One side of the first-level speed regulating spur gear 18 is connected to a first-level speed regulating motor 25 fixed inside the first-level speed regulating box 17. The first-level speed regulating motor 25 is started to drive the first-level speed regulating spur gear 18 to rotate, thereby driving the first-level speed regulating spur gear 18 to control the axial movement of the first-level speed regulating screw 16, thereby adjusting the axial position of the built-in speed regulating main gear 19. The center of the external speed regulating gear ring 21 is away from the built-in The position of the speed regulating main gear 19 is provided with a set of rotating positioning discs 22 of the running structure. The rotating positioning discs 22 are fixedly connected to the side wall of the external speed regulating gear ring 21 through multiple sets of L-shaped connecting rods 24 on the circumferential outer wall. The rotating positioning discs 22 are provided with multiple tooth groove positioning rods 23 at equal intervals in a ring toward the side wall of the built-in speed regulating main gear 19. When the built-in speed regulating main gear 19 is controlled to move to the side wall of the rotating positioning discs 22, the tooth groove positioning rods 23 are inserted into the tooth grooves of the built-in speed regulating main gear 19. At this time, the built-in speed regulating main gear 19 The main gear 19 is separated from the built-in speed regulating slave gear 20. When the built-in speed regulating main gear 19 rotates, it directly drives the external speed regulating ring gear 21 to rotate under the connection of the L-shaped connecting rod 24. At this time, the meshing of the built-in speed regulating slave gear 20 and the external speed regulating ring gear 21 is utilized to drive the built-in speed regulating slave gear 20 to rotate rapidly. Since the diameter of the external speed regulating ring gear 21 is much larger than that of the built-in speed regulating slave gear 20, the large gear drives the small gear to rotate, thereby realizing the high-speed rotation of the connecting shaft 28.

[0033] It should be noted that the built-in speed regulating main gear 19 cooperates with the rotating positioning plate 22 and the tooth groove positioning rod 23 to drive the external speed regulating gear ring 21 to control the rotation of the built-in speed regulating slave gear 20, which is directly driven by the built-in speed regulating main gear 19 and the built-in speed regulating slave gear 20. The directions in which the built-in speed regulating slave gear 20 is driven by both are opposite. Therefore, in the actual adjustment process, before adjusting the speed of the built-in speed regulating slave gear 20, the rotation direction of the servo motor 10 needs to be adjusted in advance. Here, the control of the built-in speed regulating slave gear 20 belongs to the first-level speed regulation, so it can be controlled in advance before the knitting machine is operated, and the first-level speed regulation belongs to the speed regulation amplitude angle between the external speed regulating gear ring 21 and the built-in speed regulating slave gear 20, the built-in speed regulating main gear 19 and the built-in speed regulating slave gear 20, which can be controlled and adjusted according to actual conditions;

[0034] Specifically, a plurality of fixed mounting columns 26 are evenly installed on one side of the I-level speed regulating box 17, which are used to stably install the I-level speed regulating box 17 on one side of the upper part of the I-level speed regulating screw 16. At the same time, a rotation notch is provided on the bottom wall of the I-level speed regulating box 17 corresponding to the bottom of the I-level speed regulating spur gear 18, which is used to keep the tooth groove of the I-level speed regulating spur gear 18 rotated to the bottom to be able to mesh smoothly with the I-level speed regulating screw 16. At the same time, in order to maintain the normal rotation of the I-level speed regulating screw 16, the tooth grooves of the I-level speed regulating spur gear 18 and the I-level speed regulating screw 16 that mesh with each other are set to a straight tooth groove structure, so as to maintain the normal rotation and movement of the I-level speed regulating screw 16;

[0035] Furthermore, the support and control of the external speed regulating gear ring 21, the rotating positioning plate 22 and other structures are not shown in the drawings of this specification, but can be specifically configured according to actual conditions and the application of the device in a knitting underwear machine.

[0036] As a preferred embodiment of the present invention, the mobile speed regulating assembly includes a second-level speed regulating screw 29 which is movable and limited in rotation and is mounted on the connecting shaft 28. A second-level speed regulating box 30 is arranged on one side of the upper part of the second-level speed regulating screw 29. A group of speed regulating parts is also arranged inside the second-level speed regulating box 30. The speed regulating parts are meshed with the second-level speed regulating screw 29 to control the axial movement of the second-level speed regulating screw 29. At the same time, a group of positioning keys 27 are arranged on the circumferential outer wall of the connecting shaft 28. A positioning slide rail is arranged in the inner wall of the second-level speed regulating screw 29 corresponding to the positioning key 27. The positioning key 27 moves along the positioning slide rail, that is, when the second-level speed regulating screw 29 is controlled to move along the connecting shaft 28 by the speed regulating part, the connecting shaft 28 is The rotation synchronously controls the rotation of the second-stage speed regulating screw 29. The end of the second-stage speed regulating screw 29 away from the connecting shaft 28 is connected to a group of gear connecting rods 31. One end of the gear connecting rod 31 is equipped with a second-stage front main gear 1 32 and a second-stage front main gear 2 33, and the other end is equipped with a second-stage rear main gear 1 34 and a second-stage rear main gear 2 35. The interval between the second-stage front main gear 1 32 and the second-stage front main gear 2 33 is equal to the interval between the second-stage rear main gear 1 34 and the second-stage rear main gear 2 35. The movable speed regulating component part structure on both sides of the transmission shaft 53 is respectively close to the second-stage front main gear 1 32 and the second-stage front main gear 2 33. The distance between the second stage front slave gear 1 36 and the second stage front slave gear 2 37 is twice the distance between the second stage front master gear 1 32 and the second stage front master gear 2 33. Similarly, the distance between the second stage rear slave gear 1 38 and the second stage rear slave gear 2 39 is twice the distance between the second stage rear master gear 1 34 and the second stage rear master gear 2 35. When the gear connecting rod 31 is controlled to move axially, the second stage front master gear 1 32 and the second stage front slave gear 1 36, the second stage rear master gear 1 34 and the second stage rear master gear 2 35 can be controlled to mesh at the same time. The second stage rear slave gear 1 38 is meshed, or the second stage front main gear 2 33 is meshed with the second stage front slave gear 2 37, and the second stage rear main gear 2 35 is meshed with the second stage rear slave gear 2 39 at the same time, that is, the gear ratios among the second stage front main gear 1 32, the second stage front main gear 2 33, the second stage rear main gear 1 34, the second stage rear main gear 2 35, the second stage front slave gear 1 36, the second stage front slave gear 2 37, the second stage rear slave gear 1 38, and the second stage rear slave gear 2 39 are different, so as to control the outer sides of the two ends of the transmission shaft 53 to rotate at different speeds, and then through the plug-in cooperation with the swing speed regulating component, the transmission shaft 53 is controlled to drive the power output shaft 14 to output at different speeds.

[0037] As a preferred embodiment of the present invention, refer to Figure 6The swing speed regulating assembly includes a Class III speed regulating gear cylinder 1 41 fixedly mounted at the center of one side opposite to the Class II front slave gear 2 37 and the Class II rear slave gear 1 38. A movable sleeve 43 is mounted on the transmission shaft 53 between the Class III speed regulating gear cylinders 1 41 on both sides. Class III speed regulating main gears 42 are mounted at both ends of the movable sleeve 43. The Class III speed regulating main gear 42 follows the axial movement of the movable sleeve 43 and is plugged and meshed with the inner side of the adjacent Class III speed regulating gear cylinder 1 41. The Class III speed regulating gear cylinders 1 41 on both sides are located on the transmission shaft 53. A positioning key 2 52 is installed on the circumferential outer wall of the transmission shaft 53 between the two ends of the transmission shaft 53 and the two ends of the transmission shaft 53. A positioning slide rail is provided in the inner wall of the movable sleeve 43 corresponding to the positioning key 2 52. The positioning key 2 52 and the positioning slide rail are used to limit the movable rotation. In this way, the III-stage speed regulating main gear 42 and the III-stage speed regulating gear cylinder 1 41 are controlled to engage with each other, and the II-stage front slave gear 1 36, the II-stage front slave gear 2 37, the II-stage rear slave gear 1 38 or the II-stage rear slave gear 2 39 rotate to drive the III-stage speed regulating gear cylinder 1 41 to rotate, thereby driving the III-stage speed regulating gear cylinder 1 The speed regulating main gear 42 rotates, and then controls the transmission shaft 53 to rotate, that is, at this time, the rotation of the transmission shaft 53 is synchronized with the corresponding rotation of the second-level front slave gear 1 36, the second-level front slave gear 2 37, the second-level rear slave gear 1 38 or the second-level rear slave gear 2 39, so as to achieve the speed adjustment of the power output shaft 14. A circle of toggle tooth grooves 44 are provided in the middle of the movable sleeve 43, and a group of arc-shaped toggle rings 45 are contact-arranged on the lower side of the toggle tooth grooves 44, and a group of swinging rings 45 are connected downwardly to the middle of the bottom of the arc-shaped toggle ring 45. Rod 46, a group of toggle racks 50 are connected to the bottom of the swing rod 46, a group of toggle main teeth 49 are meshed at the bottom of the toggle rack 50, and a level III speed regulating motor 48 is connected to one side of the toggle main teeth 49, that is, the level III speed regulating motor 48 is started to drive the toggle main teeth 49 to rotate, thereby controlling the toggle rack 50 to move horizontally, and then under the connection of the swing rod 46, the arc-shaped toggle ring 45 is controlled to push the toggle tooth groove 44 to swing, so as to control the level III speed regulating main gears 42 on both sides to engage with their corresponding level III speed regulating gear cylinder 1 41;

[0038] Specifically, a group of base plates 40 are provided on the lower side of the swing rod 46, and a swing rod groove 47 is opened on the base plate 40 corresponding to the swing rod 46. The swing rod 46 moves laterally along the inside of the swing rod groove 47, and the main gear 49 is supported and arranged at the bottom of the base plate 40. The level III speed regulating motor 48 is fixed at the bottom of the base plate 40, so as to realize the function of controlling the swing of the swing rod 46 and moving the gear groove 44 laterally by starting the rotation of the level III speed regulating motor 48.

[0039] As a preferred embodiment of the present invention, the transmission shaft 53, the gear connecting rod 31, and the connecting shaft 28 are all equipped with a rod seat 51, and the rod seat 51 is combined with a support rod and other structures to suspend and position the above structures.

[0040] The working principle of the present invention is: in the idle position of the device, all the driving parts mentioned above, which refer to power elements, electrical parts and adapted power supplies, are connected through wires, and the electrical connections between the knitted underwear mechanical and electrical parts are completed in a sequential working order. The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process, and no description is made on the electrical control. After the power output shaft 14 is installed with the knitted underwear machine used, the device is stably and accurately installed again according to the applicable position, and then started and used. During the use process, the initial operating speed is selected by controlling the servo motor 10, and the output direction of the servo motor 10 can also be adjusted. In combination with the speed regulating parts in the level I speed regulating box 17, the internal speed regulating slave gear 20, the external speed regulating gear ring 21, and the internal speed regulating main gear 19 are controlled. The output speed of the built-in speed regulating slave gear 20 is adjusted at level I by meshing at different positions, and then the speed regulating parts inside the level II speed regulating box 30 control the level II front main gear 1 32, the level II front main gear 2 33, the level II rear main gear 1 34, the level II rear main gear 2 35 to mesh with the corresponding level II front slave gear 1 36, the level II front slave gear 2 37, the level II rear slave gear 1 38, the level II rear slave gear 2 39 to adjust the level II speed, and then the level II rear slave gear 1 38 is controlled to run again, and the swing rod 46, the arc-shaped toggle ring 45, the toggle tooth groove 44 and other structures are used to control the level III speed regulating master gear 42 to be plugged into the level III speed regulating gear cylinder 1 41, so as to adjust the transmission shaft 53 at level III, and then the output speed of the power output shaft 14 is adjusted in multiple stages.

[0041] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A mechanical transmission device with variable speed ratio for a knitting underwear machine, characterized in that: It comprises a servo motor (10) and a power output shaft (14); the output end of the servo motor (10) is connected to a drive shaft (15), and a multi-stage speed regulation system is provided between the drive shaft (15) and the power output shaft (14); The multi-stage speed regulation system comprises a first-stage speed regulation mechanism (11), a second-stage speed regulation mechanism (12), and a third-stage speed regulation mechanism (13); the first-stage speed regulation mechanism (11) and the second-stage speed regulation mechanism (12), as well as the second-stage speed regulation mechanism (12) and the third-stage speed regulation mechanism (13) are all connected in a controlled rotational manner; the first-stage speed regulation mechanism (11) comprises a bidirectional speed regulation component, one end of the bidirectional speed regulation component is connected to the drive shaft (15), and the other end is connected to the second-stage speed regulation mechanism (12), and the servo motor (10) is controlled to change the rotation direction of the drive shaft (15), thereby adjusting the gear transmission ratio in the bidirectional speed regulation component; The bidirectional speed regulating assembly comprises a first-stage speed regulating screw (16) which is movable and limited in rotation and is sleeved on a driving shaft (15); an end of the first-stage speed regulating screw (16) which is away from the driving shaft (15) is provided with a built-in speed regulating main gear (19); a group of built-in speed regulating slave gears (20) are meshed on one side of the built-in speed regulating main gear (19); a group of external speed regulating ring gears (21) are meshed on the outer side of the built-in speed regulating slave gear (20); a connecting shaft (28) is provided on the middle part of the side of the built-in speed regulating slave gear (20) facing the movable speed regulating assembly; the connecting shaft (28) is connected to the movable speed regulating assembly; A positioning key (27) is installed along the axial outer wall of the driving shaft (15) and is distributed parallel to the axis. A positioning slide rail is provided on the inner wall of the first-stage speed regulating screw (16) corresponding to the positioning key (27). The positioning key (27) moves axially along the positioning slide rail. A first-stage speed regulating box (17) is provided on one side of the top of the first-stage speed regulating screw (16). A speed regulating part rotates inside the first-stage speed regulating box (17). The speed regulating part includes a first-stage speed regulating spur gear (18) meshing and rotating with the first-stage speed regulating screw (16). The first-stage speed regulating box (17) is provided with a speed regulating part. The speed regulating part includes a first-stage speed regulating spur gear (18) meshing and rotating with the first-stage speed regulating screw (16). One side of the spur gear (18) is connected to a first-stage speed regulating motor (25) fixed inside the first-stage speed regulating box (17); a set of rotating positioning plates (22) of an operating structure are arranged at a position away from the internal speed regulating main gear (19) at the center of the external speed regulating ring gear (21); the rotating positioning plate (22) is fixedly connected to the side wall of the external speed regulating ring gear (21) via a plurality of sets of L-shaped connecting rods (24) on the circumferential outer wall; a plurality of tooth groove positioning rods (23) are annularly installed at equal intervals on the side wall of the rotating positioning plate (22) facing the internal speed regulating main gear (19); A plurality of fixed mounting columns (26) are evenly mounted on one side of the first-stage speed regulating box (17); a rotation slot is provided on the bottom wall of the first-stage speed regulating box (17) corresponding to the bottom of the first-stage speed regulating spur gear (18); and the tooth grooves of the first-stage speed regulating spur gear (18) and the first-stage speed regulating screw (16) that mesh with each other are arranged as a straight tooth groove structure; The second-level speed regulating mechanism (12) comprises a movable speed regulating assembly, one end of the movable speed regulating assembly facing the first-level speed regulating mechanism (11) is connected to the bidirectional speed regulating assembly, and the side of the movable speed regulating assembly away from the first-level speed regulating mechanism (11) is connected to the third-level speed regulating mechanism (13) in a transmission package, so as to adjust the axial movement of the movable speed regulating assembly and control the meshing between gears of different sizes; The III-level speed regulating mechanism (13) comprises a swinging speed regulating component, which is swingably arranged between the partial structure of the mobile speed regulating component located on one side of the power output shaft (14), a transmission shaft (53) is arranged in the middle of the swinging speed regulating component, one end of the transmission shaft (53) is fixedly connected to the power output shaft (14), and the two sides of the structure of the mobile speed regulating component located on one side of the power output shaft (14) are movably sleeved on the transmission shaft (53), and the swinging speed regulating component is controlled to swing and engage with the mobile speed regulating component on one side in a plug-in manner.

2. A variable speed ratio mechanical transmission device for a knitting underwear machine according to claim 1, characterized in that: The movable speed regulating assembly comprises a second-level speed regulating screw (29) which is movable and limited in rotation and is mounted on a connecting shaft (28); a second-level speed regulating box (30) is arranged on one side of the upper part of the second-level speed regulating screw (29); a second-level speed regulating box (30) is also arranged inside the second-level speed regulating box (30); the speed regulating parts are meshed with the second-level speed regulating screw (29); a group of positioning keys (27) are arranged on the circumferential outer wall of the connecting shaft (28); a positioning slide rail is arranged in the inner wall of the second-level speed regulating screw (29) corresponding to the positioning key (27); and the positioning key (27) moves along the positioning slide rail.

3. A variable speed ratio mechanical transmission device for a knitting underwear machine according to claim 2, characterized in that: The end of the second-stage speed regulating screw (29) away from the connecting shaft (28) is connected to a group of gear connecting rods (31), one end of the gear connecting rod (31) is installed with a second-stage front main gear 1 (32) and a second-stage front main gear 2 (33), and the other end is installed with a second-stage rear main gear 1 (34) and a second-stage rear main gear 2 (35), the interval between the second-stage front main gear 1 (32) and the second-stage front main gear 2 (33) is equal to the interval between the second-stage rear main gear 1 (34) and the second-stage rear main gear 2 (35), and the movable speed regulating component part structure movably mounted on both sides of the transmission shaft (53) is respectively close to the second-stage front main gear 1 (32), the second-stage rear main gear 2 (35) and the second-stage rear main gear 2 (35). The second stage front slave gear 1 (36) and the second stage front slave gear 2 (37) on one side of the second stage front master gear 2 (33), the second stage rear slave gear 1 (38) and the second stage rear slave gear 2 (39) on one side of the second stage rear master gear 1 (34) and the second stage rear master gear 2 (35), the distance between the second stage front slave gear 1 (36) and the second stage front slave gear 2 (37) is twice the distance between the second stage front master gear 1 (32) and the second stage front master gear 2 (33), and the distance between the second stage rear slave gear 1 (38) and the second stage rear slave gear 2 (39) is twice the distance between the second stage rear master gear 1 (34) and the second stage rear master gear 2 (35).

4. A variable speed ratio mechanical transmission device for a knitting underwear machine according to claim 3, characterized in that: The swing speed regulating assembly comprises a Class III speed regulating gear cylinder 1 (41) fixedly mounted at the center of one side opposite to the Class II front slave gear 2 (37) and the Class II rear slave gear 1 (38), a movable sleeve (43) is mounted on the transmission shaft (53) between the Class III speed regulating gear cylinders 1 (41) on both sides, and Class III speed regulating main gears (42) are mounted at both ends of the movable sleeve (43). The Class III speed regulating main gear (42) moves axially with the movable sleeve (43) and is plugged and meshed with the inner side of the adjacent Class III speed regulating gear cylinder 1 (41). The transmission shaft (53) between the Class III speed regulating gear cylinders 1 (41) on both sides is provided with a movable sleeve (43). A second positioning key (52) is installed on the circumferential outer wall, and a positioning slide rail is provided in the inner wall of the movable sleeve (43) corresponding to the second positioning key (52). A circle of toggle tooth grooves (44) is provided in the middle of the movable sleeve (43), and a group of arc-shaped toggle rings (45) are provided in a contact manner on the lower side of the toggle tooth grooves (44). A group of swing rods (46) are connected downwardly to the middle of the bottom of the arc-shaped toggle ring (45), and a group of toggle racks (50) are connected to the bottom of the swing rods (46). A group of toggle main teeth (49) are meshed at the bottom of the toggle racks (50), and a level III speed regulating motor (48) is connected to one side of the toggle main teeth (49).

5. A variable speed ratio mechanical transmission device for a knitting underwear machine according to claim 4, characterized in that: A group of bottom plates (40) are arranged on the lower side of the swing rod (46), and a swing rod groove (47) is provided on the bottom plate (40) corresponding to the swing rod (46), and the swing rod (46) moves laterally along the inside of the swing rod groove (47).

6. A variable speed ratio mechanical transmission device for a knitting underwear machine according to claim 5, characterized in that: The transmission shaft (53), the gear connecting rod (31) and the connecting shaft (28) are all mounted with a rod seat (51).

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