Rolling tension control device of circular knitting machine
By designing a knitted large circle machine winding tension control device including a rotating frame and a multi-speed speed control device, the problems of small tension adjustment range and high maintenance cost in the prior art are solved, and more efficient tension control and lower production costs are achieved.
Patent Information
- Application Number
- CN202421810712.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-07-29
AI Technical Summary
The winding tension control device of existing knitting large circle machines has problems such as small tension adjustment range, narrow product range, low equipment utilization rate, large parts replacement restrictions and high maintenance costs.
A winding tension control device including a base, a rotating frame, a winding assembly and a speed control device are designed. The speed control device converts the power of the rotating frame into axial output power through the meshing transmission of fixed teeth and movable teeth. Combined with the multi-speed speed control mechanism, a large-scale and fine tension adjustment is achieved.
It realizes that the output power source can be provided without the need for an additional independent power source, saves costs, improves the balance of winding tension and reduces product defect rate, and expands the tension adjustable range and adjustment accuracy.
Smart Images
Figure CN223032537U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of winding control of circular knitting machines, and particularly relates to a winding tension control device of a circular knitting machine, which is particularly suitable for modifying the winding device of an early imported German circular knitting machine. Background Art
[0002] Large circular knitting machines have the characteristics of high speed, high output, fast pattern change, good fabric quality, fewer processes, and strong product adaptability. They are widely used in the textile industry. Most of the large circular knitting machines used by enterprises that entered the textile industry early were large circular knitting machines imported from Germany. This type of large circular knitting machine is equipped with an electronic cloth collection system, including a spiral stainless steel cloth roller, a tension roller, and an electric drive control motor. The output shaft of the electric drive control motor is linked to the fixed gears at the ends of the spiral stainless steel cloth roller and the tension roller through a transmission chain. The electric drive control motor is configured separately and serves as a power source for controlling the cloth tension. The tension can only be adjusted by adjusting the output power of the electric drive control motor. The tension of the grey cloth winding is limited by the output power of the electric drive control motor. Therefore, the problems of this type of large circular knitting machine are as follows: First, once the electric drive control motor is determined, the output power is limited. Therefore, the adjustable stroke of the grey cloth winding tension is extremely small, and it can only complete the winding of grey cloth within a certain thickness range. It cannot adapt to the winding of fabrics beyond this range, such as the winding of thin fabrics such as chiffon. The equipment is often idle, which causes a huge waste of production resources. Second, the electronic cloth collecting system of the equipment is a complete system. The built-in program locks each functional component. If you want to replace parts, such as replacing a control motor with a larger output power and adjusting the output gear ratio, you can only purchase related accessories from the original manufacturer or upgrade the whole through the original equipment manufacturer. Once you replace the parts by yourself or use substitute parts, the program will frequently report errors, which will restrict production efficiency and increase the product defect rate. This will lead to high maintenance costs for the equipment, which is extremely unfavorable for the control of production costs. Purchasing new equipment for replacement will waste existing production resources (the knitting part except the winding part can be used for weaving different fabrics) and high new investment costs.
[0003] In addition, some existing large circular knitting machines also use electronic cloth collection systems, and their tension control parts still have the problems mentioned above, such as large adjustable range limitations, high program control error rate, complex maintenance and high cost. Some large circular knitting machines use mechanical speed control cloth collection systems to achieve a wide range of adjustment through gear ratio changes, but this method still requires an independent power source on the one hand, and on the other hand, due to space limitations, there are few adjustable gears, a large span of adjacent gear adjustment ranges, low adjustment accuracy, and cannot achieve stepless speed regulation similar to electronic drives, and cannot adapt to product switching with slight thickness changes. Summary of the invention
[0004] The utility model aims to provide a winding tension control device for a large circular knitting machine, so as to solve the problems that the winding tension control device of the existing large circular knitting machine needs to be equipped with a power source separately, and when an electronic cloth collecting system is adopted, there are still problems such as a small tension adjustment range, a narrow applicable product range, low equipment utilization rate, large restrictions on parts replacement, and high maintenance cost; when a mechanical speed regulation cloth collecting system is adopted, there are still problems such as a small number of adjustable gears, low non-adjustment accuracy, and inability to adapt to product switching with slight thickness changes.
[0005] The utility model is realized by the following technical solutions:
[0006] The utility model proposes a winding tension control device for a large circular knitting machine, comprising a base, wherein the base is rotatably provided with a rotating frame, and a winding assembly and a speed regulating device are provided on the rotating frame, wherein the speed regulating device is used to convert input power into a required speed output, thereby adjusting the tension of the winding assembly; the speed regulating device is fixed to the bottom of the rotating frame and rotates with the rotating frame, and the speed regulating device comprises a power area and a speed regulating area, wherein fixed teeth and movable teeth are provided in the power area, wherein the fixed teeth are fixedly connected to the base, wherein the fixed teeth mesh with the movable teeth, and wherein the fixed teeth and the movable teeth are meshed, and wherein the fixed teeth and the movable teeth are meshed. The movable teeth are all bevel gears and their axes are perpendicular to each other. When the speed regulating device rotates with the rotating frame, the movable teeth mesh and rotate relative to the fixed teeth and convert the power of the rotating frame into the input power of the speed regulating device; the speed regulating area is provided with a first speed regulating mechanism, a second speed regulating mechanism and a third speed regulating mechanism, wherein the first speed regulating mechanism is transmitted with the movable teeth to quickly convert the input power to the required power range; the second speed regulating mechanism transmits the output power of the first speed regulating mechanism to the third speed regulating mechanism, and the third speed regulating mechanism is provided with an output shaft connected to the winding assembly;
[0007] Based on the above technical features, by utilizing the relative rotation relationship between the speed regulating device and the fixed seat, the fixed teeth and the movable teeth are meshed with each other for transmission, and the rotational power of the rotating frame (that is, the power of the knitting part of the circular knitting machine) is transferred to the speed regulating device. This not only solves the problem that the existing equipment needs to additionally set up a drive motor as a winding power source, saving production costs, but also enables the winding component to maintain good synchronization with the knitting part of the circular knitting machine, which is beneficial to the control of the uniformity of the grey cloth winding and a higher yield rate. At the same time, three speed regulating units are set on the speed regulating device to form more combined gears, and the adjustment range is more controllable, which is beneficial to the improvement of the adjustment accuracy.
[0008] Further, a driving shaft, a first transmission shaft, a second transmission shaft and the output shaft are arranged in the speed regulation area. The driving shaft extends to the power area and is fixedly connected with a movable gear at the end. The first speed regulation mechanism, the second speed regulation mechanism and the third speed regulation mechanism are all provided with multiple groups of gear sets with different transmission ratios that can be switched. Among them, the driving gear of the first speed regulation mechanism is arranged on the driving shaft and rotates coaxially with it. The driven gear of the first speed regulation mechanism is a gear for gear shifting. The driven gear of the first speed regulation mechanism and the driving gear of the second speed regulation mechanism are both arranged on the first transmission shaft and rotate coaxially with it. The driving gear of the second speed regulation mechanism is a gear for gear shifting. The driven gear of the second speed regulation mechanism and the driving gear of the third speed regulation mechanism are both arranged on the second transmission shaft and rotate coaxially with it. The driven gear of the third speed regulation mechanism is arranged on the output shaft and rotates coaxially with it. This design can achieve more gear combinations through the gear shifting of the first, second, and third speed regulation mechanisms.
[0009] Further, the first transmission shaft and the second transmission shaft are arranged on both sides of the driving shaft. The first speed regulation mechanism includes a first input gear, a variable gear pair, an output gear and a first driven gear. The first input gear and the output gear can both mesh with the first driven gear. The first input gear rotates coaxially with the driving shaft. The variable gear pair is rotatably arranged on the second transmission shaft. The large gear of the variable gear pair meshes with the first input gear, and the small gear of the variable gear pair meshes with the output gear. The first driven gear is connected with a first adjustment knob. When shifting gears, the first adjustment knob controls the first driven gear to move along the first transmission shaft and respectively mesh with the first input gear or the output gear to achieve gear shifting. Through the setting of the variable gear pair, this design can enable the first input gear and the output gear to have two changes in the transmission ratio, with a larger adjustable range. At the same time, combined with the relative position setting of the first and second transmission shafts and the driving shaft, the transmission path from the first input gear to the output gear is U-shaped, effectively reducing the number of transmission shafts arranged and making the structural design more compact.
[0010] Furthermore, the first speed regulation mechanism further includes (n - 2) sets of output gear pairs, and there are (n - 1) sets of variable gear pairs. The output gear pairs and the variable gear pairs are combined to form the gear range expansion of the first speed regulation mechanism. The variable gear pairs are all freely rotatable relative to the second transmission shaft, and the output gear pairs are all freely rotatable relative to the driving shaft. The pinion of the variable gear pair meshes with the large gear of the next-level output gear pair, and the large gear of the previous output gear pair meshes with the large gear of the same-level variable gear pair, and so on until the pinion of the last variable gear pair meshes with the output gear; when shifting gears, the first driven gear meshes with the first input gear, the large gear of the corresponding gear range output gear pair or the output gear respectively under the control of the first regulating rotation to achieve gear shifting. This design enables the gear range of the first speed regulation mechanism to have better expandability, can quickly reduce the input power to meet the power requirements of the tension regulation of the winding device. At the same time, on the premise that the length direction permits, as many gears as possible with as small a change in transmission ratio as possible can be set, which is conducive to the fine adjustment of the speed regulation device.
[0011] Preferably, the variable gear pairs have the same gear ratio, the output gear pairs have the same gear ratio, the first input gear adopts a single gear or a gear pair with the same gear ratio as the output gear pairs, and the output gear is a single gear and has the same number of teeth as the large gear of the output gear pairs. This design can make the components have better compatibility, and there is no need to carefully compare the differences between different components during the installation and maintenance processes, which is conducive to reducing the installation and maintenance difficulties. At the same time, the change range of each adjacent gear range is the same, which is conducive to users better predicting the tension regulation effect after shifting gears, and the operation process is simpler.
[0012] More preferably, the large gears of the variable gear pairs, the gear pair of the first input gear, and the pinions of the output gear pairs have the same number of teeth, and they perform a 1:1 transmission. In this design, there is only one change in the transmission ratio from the previous gear range to the next gear range, which can simplify the gear design of the speed regulation device and is also conducive to reducing the influence of the cumulative error of gear precision on the tension regulation precision, especially suitable for the tension regulation of switching to produce lightweight fabrics.
[0013] Furthermore, the first transmission shaft and the second transmission shaft are arranged on both sides of the driving shaft. The second speed regulation mechanism includes a second input gear, an intermediate gear pair, and a second driven gear. The second input gear is a driving gear, and the second input gear is connected with a second adjustment knob. There are two sets of the intermediate gear pair and the second driven gear respectively. The intermediate gear pair is mirror-mounted on the driving shaft and rotates freely relative to the driving shaft. The large gear of the intermediate gear pair meshes with the second input gear, and the small gear of the intermediate gear pair meshes with the corresponding second driven gear. When shifting gears, the second adjustment knob controls the second input gear to move along the first transmission shaft and mesh with the intermediate gear pair of the corresponding gear position. This design realizes the stable transmission between the second output gear and the second driven gear through the arrangement of the intermediate gear pair, and avoids the driving shaft, making the structure of the speed regulation device more compact.
[0014] Preferably, the second input gear adopts a gear pair, and its large gear and small gear mesh with different intermediate gear pairs respectively. This design is conducive to amplifying the adjustment range between two gear positions of the second speed regulation mechanism, realizing large-range tension adjustment, and making the adjustment operation more convenient when the thickness of the product produced changes greatly.
[0015] Furthermore, the third speed regulation mechanism includes a third input gear, a third driven gear, a third transmission shaft, and the output shaft. The third input gear is connected with the output end of the second speed regulation mechanism. A first intermediate gear that rotates coaxially is arranged on the third transmission shaft. The first intermediate gear meshes with the third input gear. A shiftable and rotatable gear-shifting component is slidably arranged on the third transmission shaft. The gear-shifting component includes a second intermediate gear, a third intermediate gear, and a pair of mounting lugs arranged on both sides. The second intermediate gear is arranged at the lower part of the gear-shifting component and rotates coaxially with the third transmission shaft. The third intermediate gear is arranged at the upper part of the gear-shifting component and meshes with the second intermediate gear. The mounting lugs are sleeved on the third transmission shaft and can slide and rotate relative to it. The mounting lug on one side extends upward to form a swing rod, and the swing rod controls the meshing or separation of the third intermediate gear and the third driven gear. There are multiple third driven gears. The gear-shifting component is connected with a third adjustment knob through a rack. When shifting gears, the swing rod is toggled to separate the third intermediate gear from the third driven gear, and the third adjustment knob drives the gear-shifting component to move along the third transmission shaft to the third driven gear of the corresponding gear position. Then, the swing rod is toggled in the reverse direction to make the third intermediate gear mesh with the third driven gear to complete the gear shift.
[0016] Based on the above technical features, through the design of the third transmission shaft and the gear shifting component, the total adjustment range of the third speed regulation mechanism can be maximally expanded and the number of adjustment levels can be increased, and the adjustment process is not limited by the change of the transmission ratio of the meshing gear sets, that is, the third intermediate gear can mesh with any third driven gear to form a gear set corresponding to the required transmission ratio, without the need to set multiple transmission shafts or variable gear pairs such as those in the first speed regulation mechanism, and the structural design is compact and simple.
[0017] Preferably, the third driven gears are arranged in decreasing order of the number of teeth and closely fit together to form an integral multi-gear. A retaining edge is provided at the joint surface between adjacent levels. The retaining edge has the same diameter as the large gear and is used to prevent the third intermediate gear from sliding towards the adjacent small-tooth-number gear. This design reduces the number of installed components through the setting of the multi-gear, making the installation process simpler, further improving the structural compactness of the third speed regulation mechanism. At the same time, the setting of the retaining edge can make the transmission ratio between adjacent levels as small as possible without causing gear slippage during use.
[0018] Furthermore, the power area is arranged in the middle area of the speed regulation device. The speed regulation area includes a first speed regulation area and a second speed regulation area. The first speed regulation mechanism and the second speed regulation mechanism are arranged in the first speed regulation area, and the third speed regulation mechanism is arranged in the second speed regulation area. This design makes the speed regulation device symmetrically arranged relative to the axis of rotation and rotates coaxially with the rotating frame. It is not prone to eccentric movement during rotation, which is beneficial to the stability of the internal components and the transmission reliability is better.
[0019] Beneficial effects
[0020] One of the above technical solutions has the following advantages or beneficial effects:
[0021] 1) By fixing the speed regulation device to the rotating frame and rotating with it, a conical fixed gear and a movable gear that mesh with each other are arranged in the power area of the speed regulation device. The fixed gear is fixedly connected to the base. When the speed regulation device rotates with the rotating frame, the rotational power of the circular knitting machine is converted into axial rotation, providing an output power source for the winding tension control device. Without the need to additionally set an independent power source, it saves costs, and the knitting speed at the upper end of the circular knitting machine can be linked with the winding speed, maintaining good synchronization, the winding tension setting is more balanced, and the product defect rate is greatly reduced.
[0022] 2) By designing three linked multi-gear mechanical speed regulation mechanisms on the speed regulation device, and through the gear position switching and combination of each speed regulation mechanism, a speed regulation mode with multiple adjustable levels, arbitrary transformation of the single-time adjustment range, large-scale adjustment, fine adjustment, and a large total adjustment range is formed, greatly expanding the adjustable range and adjustment accuracy of the tension of the large circular knitting machine. It has both the fineness of electronic drive motor speed regulation and the large adjustment range and adjustability of mechanical speed regulation, which can meet the fine adjustment requirements during the production process of the same product and also meet the adjustment requirements for switching to the production of any different thickness products.
[0023] 3) By arranging multiple variable gear pairs and output gear pairs in the first speed regulation mechanism, the transmission path of the first speed regulation mechanism is in a U shape (two gears) or an S shape (multiple gears), making the spatial structure more compact; and by using variable gear pairs with the same gear ratio and output gear pairs with the same gear ratio, the parts have stronger compatibility, and the installation and maintenance are simpler. Moreover, each gear position adjustment can form the same proportion of adjustment, making the adjustment more operable; through the first speed regulation mechanism, the input power can be quickly degraded to meet the power requirements suitable for the tension adjustment of the winding device.
[0024] 4) By arranging a third transmission shaft and a gear position cutting component in the third speed regulation mechanism, the switching of gear position cutting and transmission is realized through the engagement and separation of the gear position cutting component and the third driven gear. The adjustment process is not limited by the change of the transmission ratio of the mutually meshing gear set. The structure is compact and there are many gear positions that can be set. The total variable range of the gear ratio is large, and the adjustment accuracy of adjacent gear positions can be set extremely small, approaching the stepless speed regulation of the electronic drive motor as much as possible, and well overcoming the defects of mechanical speed regulation. Description of the Drawings
[0025] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, purposes, and advantages of the present invention will become more obvious:
[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;
[0027] Figure 2 It is a three-dimensional structure schematic diagram of the speed regulation device of the present invention;
[0028] Figure 3 It is a top view structure schematic diagram of the speed regulation device of the present invention;
[0029] Figure 4 It is a transmission path schematic diagram of the first speed regulation mechanism of the present invention;
[0030] Figure 5 It is a schematic diagram of the gear position cutting component of the present invention;
[0031] In the figure: speed regulating device 1; outer box body 100; power area 101; speed regulating area 102; first speed regulating area 102a; second speed regulating area 102b; manual changeover switch 103; fixed gear 1a; movable gear 1b; first speed regulating mechanism 2a; second speed regulating mechanism 2b; third speed regulating mechanism 2c; driving shaft 2d; first transmission shaft 2e; second transmission shaft 2f; third transmission shaft 2g; output shaft 2h; first input gear 2a1; variable gear pair 2a2; output gear pair 2a3; output gear 2a4; first driven gear 2a5; first adjusting knob 2a6; swing link 2a7; U-shaped limit block 2a7a; second input gear 2b1; intermediate gear pair 2b2; second driven gear 2b3; limit ring 2b4; second adjusting knob 2b5; third input gear 2c1; third driven gear 2c2; flange 2c2a; first intermediate gear 2c3; gear cutting assembly 2c4; second intermediate gear 2c4a; third intermediate gear 2c4b; mounting lug 2c4c; swing rod 2c4d; fourth intermediate gear 2c5; rack 2c6; third adjusting knob 2c7; base 2; rotating frame 3; winding assembly 4; transmission assembly 5. Detailed implementation mode
[0032] The present utility model will be further described in detail below in conjunction with embodiments, but the implementation modes of the present utility model are not limited thereto.
[0033] As Figure 1 shown, the present utility model provides a winding tension control device for a circular knitting machine, including a base 2 which is fixed on the ground for support. A rotatable rotating frame 3 is provided on the base 2. The rotating frame 3 rotates relative to the base 2 under the drive of a driving device at the upper end of the circular knitting machine. A winding assembly 4 and a speed regulating device 1 which rotate therewith are fixedly provided on the rotating frame 3. Among them, the winding assembly 4 includes roller members such as a cloth winding roller, a tension roller, and a cloth guiding roller. The ends of each roller member are connected to the winding assembly 4 through a transmission assembly 5 on the side of the rotating frame 3. The speed regulating device 1 is used to convert the input power into a required rotational speed output, thereby adjusting the tension of the winding assembly 4. Among them, the roller members of the winding assembly 4 and their relative positional relationships, and the settings of the transmission assembly 5 between the winding assembly 4 and the speed regulating device 1 all belong to the conventional settings of existing circular knitting machines, so they will not be described in detail in this embodiment.
[0034] As Figure 2 、 Figure 3As shown, the speed regulating device 1 is a box-type structure, provided with an outer box body 100, the outer box body 100 is fixed to the bottom of the rotating frame 3, and the speed regulating device 1 rotates with the rotating frame 3 around the relative base 2. The outer box body 100 of the speed regulating device 1 is provided with a power area 101 and a speed regulating area 102, and the power area 101 is provided with a fixed tooth 1a and a movable tooth 1b, the fixed tooth 1a is fixedly connected to the base 2, the fixed tooth 1a is meshed with the movable tooth 1b, the fixed tooth 1a and the movable tooth 1b are both bevel gears and the axes of the two are perpendicular to each other, when the speed regulating device 1 rotates with the rotating frame 3, the movable tooth 1b is meshed and rotated relative to the fixed tooth 1a and converts the rotational power of the rotating frame 3 into the axial input power of the speed regulating device 1; the speed regulating area 102 is provided with a first speed regulating mechanism 2a, a second speed regulating mechanism 2b and The third speed regulating mechanism 2c, the first speed regulating mechanism 2a, the second speed regulating mechanism 2b and the third speed regulating mechanism 2c are all provided with a plurality of switchable gear sets with different transmission ratios, wherein the first speed regulating mechanism 2a is transmitted with the movable tooth 1b, and is used for quickly converting the input power to the required power range; the second speed regulating mechanism 2b transmits the output power of the first speed regulating mechanism 2a to the third speed regulating mechanism 2c, and the third speed regulating mechanism 2c is provided with an output shaft 2h connected with the winding component 4, and the speed regulating device 1 forms a combined gear by respectively switching the gears of the first, second and third speed regulating mechanisms, and then outputs a rotation speed that meets the tension requirements of the winding component 4.
[0035] Specifically, the speed regulating area 102 is provided with a driving shaft 2d, a first transmission shaft 2e, a second transmission shaft 2f and the output shaft 2h. The driving shaft 2d extends to the power area 101 and is fixedly connected to the movable tooth 1b at the end. The driving gear of the first speed regulating mechanism 2a is arranged on the driving shaft 2d and rotates coaxially therewith. The driven gear of the first speed regulating mechanism 2a is a gear-cutting gear, that is, the driven gear of the first speed regulating mechanism 2a is respectively meshed with different driving gears to form gears with different transmission ratios. The driven gear of the first speed regulating mechanism 2a and the driving gear of the second speed regulating mechanism 2b are both arranged at The first transmission shaft 2e rotates coaxially therewith, the driving gear of the second speed regulating mechanism 2b is a shifting gear, that is, the driving gear of the second speed regulating mechanism 2b switches between different driven gears to form gears with different transmission ratios, the driven gear of the second speed regulating mechanism 2b and the driving gear of the third speed regulating mechanism 2c are both arranged on the second transmission shaft 2f and rotate coaxially therewith, the driven gear of the third speed regulating mechanism 2c is arranged on the output shaft 2h and rotates coaxially therewith, the third speed regulating mechanism 2c can design the driving gear or the driven gear as a shifting gear, and correspondingly the other gear is set to multiple groups with different numbers of teeth.
[0036] Among them, the driving shaft 2d, the first transmission shaft 2e, the second transmission shaft 2f and the output shaft 2h can be arranged in sequence, or can be arranged alternately left and right. Preferably, as Figure 3 shown, the first transmission shaft 2e and the second transmission shaft 2f are respectively arranged on both sides of the driving shaft 2d, so that both the driving shaft 2d and the output shaft 2h are located at the central position in the length direction of the speed regulating device 1, improving the transmission stability and making the internal structure design of the speed regulating device 1 more compact.
[0037] Among them, as Figure 3 shown, the first speed regulating mechanism 2a includes a first input gear 2a1, a variable gear pair 2a2, an output gear 2a4 and a first driven gear 2a5. Both the first input gear 2a1 and the output gear 2a4 can be meshed with the first driven gear 2a5. The first input gear 2a1 rotates coaxially with the driving shaft 2d. The variable gear pair 2a2 is rotatably arranged on the second transmission shaft 2f. The large gear of the variable gear pair 2a2 is meshed with the first input gear 2a1, and the small gear of the variable gear pair 2a2 is meshed with the output gear 2a4, forming a U-shaped transmission path between the first input gear 2a1 and the output gear 2a4. Preferably, the first input gear 2a1 can adopt a single gear or a gear pair. When the first input gear 2a1 adopts a gear pair, the large gear of the variable gear pair 2a2 is meshed with the small gear of the gear pair for transmission. The first driven gear 2a5 is arranged on the first transmission shaft 2e and drives the first transmission shaft 2e to rotate coaxially. The first driven gear 2a5 is connected with a first adjusting knob 2a6. A swing link 2a7 is fixedly connected to the first adjusting knob 2a6. A U-shaped limit block 2a7a is slidably arranged on the swing link 2a7 (as Figure 4 shown). The U-shaped limit block 2a7a forms the limit of the first driven gear 2a5. The first driven gear 2a5 can be meshed with the first input gear 2a1 or the output gear 2a4. When shifting gears, rotate the first adjusting knob 2a6, the swing link 2a7 rotates accordingly, and the U-shaped limit block 2a7a pushes the first driven gear 2a5 to move along the first transmission shaft 2e and switch between the first input gear 2a1 and the output gear 2a4 to achieve gear shifting.
[0038] Preferably, the first speed regulating mechanism 2a further includes (n - 2) sets of output gear pairs 2a3, and the step-changing gear pair 2a2 is provided with (n - 1) sets. The output gear pair 2a3 and the step-changing gear pair 2a2 are combined to form the gear range expansion of the first speed regulating mechanism 2a. The step-changing gear pairs 2a2 are all freely rotatable relative to the second transmission shaft 2f, and the output gear pairs 2a3 are all freely rotatable relative to the driving shaft 2d. The pinion of the step-changing gear pair 2a2 meshes with the large gear of the next-level output gear pair 2a3, and the large gear of the previous output gear pair 2a3 meshes with the large gear of the same-level step-changing gear pair 2a2, and so on until the pinion of the last step-changing gear pair 2a2 meshes with the output gear 2a4. The first adjusting mechanism forms an S-shaped transmission path between the driving shaft 2d and the second transmission shaft 2f through the output gear pair 2a3 and the step-changing gear pair 2a2. When shifting gears, the first driven gear meshes with the first input gear 2a1, the large gear of the corresponding gear range output gear pair 2a3 or the output gear 2a4 respectively under the control of the first adjusting rotation to achieve gear shifting. More preferably, the step-changing gear pairs 2a2 have the same gear ratio, and the output gear pairs 2a3 also have the same gear ratio. The gear pair adopted by the first input gear 2a1 is the same as the output gear pair 2a3, and the output gear 2a4 has the same number of teeth as the large gear of the output gear pair 2a3, so as to improve the interchangeability of parts, reduce the installation and maintenance difficulty, and make the adjacent gear ranges change equally and the input power decrease in geometric progression, improving the predictability of the tension adjustment effect. More preferably, the large gear of the step-changing gear pair 2a2 and the pinion of the output gear pair 2a3 have the same number of teeth, and they are in a 1:1 transmission. When shifting gears, only the transmission ratio is switched once, the gear design is simpler, and it is also beneficial to reduce the influence of the cumulative error of gear accuracy on the tension adjustment accuracy, especially suitable for the tension adjustment of switching to produce lightweight fabrics.
[0039] In this embodiment, the first speed regulating mechanism 2a has four gears. Correspondingly, a first input gear 2a1, an output gear pair 2a3a, an output gear pair 2a3b, and an output gear 2a4 are provided on the driving shaft 2d. The first driven gear 2a5 moves along the first transmission shaft 2e and meshes with and drives the first input gear 2a1, the two groups of output gear pairs 2a3, and the output gear 2a4 respectively. Among them, the first input gear 2a1 also adopts a gear pair and rotates coaxially with the driving shaft 2d. A gear pair for gear shifting 2a2a, 2a2b, 2a2c is provided on the second transmission shaft 2f. The pinion of the first input gear 2a1 meshes with the large gear of the gear pair for gear shifting 2a2a. The pinion of the gear pair for gear shifting 2a2a meshes with the large gear of the output gear pair 2a3a. The pinion of the output gear pair 2a3a meshes with the large gear of the gear pair for gear shifting 2a2b, and so on until the pinion of the gear pair for gear shifting 2a2c meshes with the output gear 2a4, thereby forming an S-shaped transmission path between the driving shaft 2d and the second transmission shaft 2f. When shifting gears, the transmission path between the first input gear 2a1 and the engaged first driven gear 2a5 is the effective path. As Figure 4 shown, when the first driven gear 2a5 meshes with the large gear of the output gear pair 2a3b, the effective transmission path is the first input gear 2a1 - gear pair for gear shifting 2a2a - output gear pair 2a3a - gear pair for gear shifting 2a2b - output gear pair 2a3b - first driven gear 2a5, and the input power becomes three levels slower after passing through the first speed regulating mechanism 2a.
[0040] Among them, the second speed regulating mechanism 2b includes a second input gear 2b1, an intermediate gear pair 2b2 and a second driven gear 2b3. The second input gear 2b1 is arranged on the first transmission shaft 2e and rotates coaxially therewith. A limit ring 2b4 for restricting the movement range of the second input gear 2b1 is also arranged on the first transmission shaft 2e. The second input gear 2b1 is a driving gear. The second input gear 2b1 is connected with a second adjusting knob 2b5. A swing link 2a7 is also arranged on the second adjusting rotation. The structure of the swing link 2a7 is the same as that of the swing link 2a7 of the first speed regulating mechanism 2a. There are two sets of the intermediate gear pair 2b2 and the second driven gear 2b3 respectively. The intermediate gear pair 2b2 is mirror-mounted on the driving shaft 2d and rotates freely relative to the driving shaft 2d. The large gear of the intermediate gear pair 2b2 meshes with the second input gear 2b1. The small gear of the intermediate gear pair 2b2 meshes with the corresponding second driven gear 2b3. The second driven gear 2b3 is arranged on the second transmission shaft 2f and drives the second transmission shaft 2f to rotate. When shifting gears, the second adjusting knob 2b5 controls the second input gear 2b1 to move along the first transmission shaft 2e and mesh with the intermediate gear pair 2b2 of the corresponding gear position. Preferably, the second input gear 2b1 adopts a gear pair, and its large gear and small gear are respectively meshed with different intermediate gear pairs 2b2 to enlarge the adjustment range between the two gear positions of the second speed regulating mechanism 2b and realize large-range tension adjustment. When switching to products with a large change in thickness during production, the adjustment operation is more convenient.
[0041] Among them, the third speed regulating mechanism 2c includes a third input gear 2c1, a third driven gear 2c2, a third transmission shaft 2g and the output shaft 2h. The third input gear 2c1 is arranged on the second transmission shaft 2f and rotates coaxially with the second transmission shaft 2f. The third input gear 2c1 is connected with the output end of the second speed regulating mechanism 2b. A first intermediate gear 2c3 that rotates coaxially is arranged on the third transmission shaft 2g. The first intermediate gear 2c3 meshes with the third input gear 2c1. A shift component 2c4 that can rotate is slidably arranged on the third transmission shaft 2g, as Figure 3As shown, the gear shifting component 2c4 includes a second intermediate gear 2c4a, a third intermediate gear 2c4b, and a pair of mounting lugs 2c4c disposed on both sides. The second intermediate gear 2c4a is disposed at the lower part of the gear shifting component 2c4 and rotates coaxially with the third transmission shaft 2g. The third intermediate gear 2c4b is disposed at the upper part of the gear shifting component 2c4 and meshes with the second intermediate gear 2c4a. The mounting lugs 2c4c are sleeved on the third transmission shaft 2g and can slide and rotate relative thereto. The mounting lug 2c4c on one side extends upward to form a swing rod 2c4d. The swing rod 2c4d is connected to the manual switching switch 103 on the upper surface of the outer box 100. When the swing rod 2c4d swings, it controls the engagement or separation between the third intermediate gear 2c4b and the third driven gear 2c2. There are multiple third driven gears 2c2. Preferably, as Figure 2 and Figure 3 shown, the third driven gears 2c2 are arranged in decreasing order of the number of teeth and are closely attached to form an integral multi-gear. A retaining edge 2c2a is provided at the joint surface between adjacent two levels. The retaining edge 2c2a has the same diameter as the large gear. The retaining edge 2c2a can enclose the teeth of the large gear that constitutes the joint surface to prevent the third intermediate gear 2c4b from sliding towards the adjacent small-tooth-number gear. The retaining edge 2c2a can be provided separately or integrally formed with the large gear that constitutes the joint surface. As Figure 5 shown, the gear shifting component 2c4 is connected to a third adjusting knob 2c7 through a rack 2c6. The end of the rack 2c6 is hinged to the bottom of the mounting lug 2c4c of the gear shifting component 2c4. The part of the third adjusting knob 2c7 located inside the box is provided with a gear that meshes with the rack 2c6. When shifting gears, the swing rod 2c4d is toggled by the manual switching switch 103 to separate the third intermediate gear 2c4b from the third driven gear 2c2. The third adjusting knob 2c7 drives the gear shifting component 2c4 to move along the third transmission shaft 2g to the third driven gear 2c2 at the corresponding gear through the rack 2c6. The swing rod 2c4d is toggled in the reverse direction to engage the third intermediate gear 2c4b with the third driven gear 2c2 to complete the gear shifting. In this embodiment, the third speed regulating mechanism 2c has 16 gears, and the third driven gear 2c2 is a sixteen-gear, which can achieve relatively fine tension adjustment.
[0042] Preferably, as Figure 2 、 Figure 3As shown, the power area 101 is provided in the middle area of the speed regulation device 1. The speed regulation area 102 includes a first speed regulation area 102a and a second speed regulation area 102b. The first speed regulation mechanism 2a and the second speed regulation mechanism 2b are provided in the first speed regulation area 102a, and the third speed regulation mechanism 2c is provided in the second speed regulation area 102b. The driving shaft 2d and the first transmission shaft 2e are provided in the first speed regulation area 102a. The second transmission shaft 2f penetrates through the first speed regulation area 102a and the power area 101 and then enters the second speed regulation area 102b. This design makes the speed regulation device 1 symmetrically arranged relative to the rotation axis and co-rotates with the rotating frame 3. It is not easy to generate eccentric motion during rotation, which is beneficial to the stability of internal components and the transmission reliability is better.
[0043] Preferably, in the second speed regulation area 102b, the second transmission shaft 2f and the third transmission shaft 2g are respectively arranged on both sides of the output shaft 2h. A fourth intermediate gear 2c5 is provided on the output shaft 2h. The fourth intermediate gear 2c5 meshes with the third input gear 2c1 and the first intermediate gear 2c3 at the same time to realize the power transmission from the third input gear 2c1 to the first intermediate gear 2c3. This design facilitates the arrangement of the three adjusting knobs on the same side of the speed regulation device 1, which is beneficial to operation.
[0044] The winding tension control device of the present utility model transfers the rotational power of a large circular knitting machine and uses a speed regulation device 1 with three linked speed regulation mechanisms for adjustment. The first speed regulation mechanism 2a can quickly convert the rotational power of the large circular knitting machine into the power required for tension adjustment. The second and third speed regulation mechanisms 2c respectively perform large-range adjustment and fine adjustment on the basis of the power converted by the first speed regulation mechanism 2a. Finally, through the gear position switching and combination of the three speed regulation mechanisms, a speed regulation mode with multiple adjustable levels (such as the number of adjustment gear positions in this embodiment can reach 128), a large total adjustment range, and an arbitrarily variable single adjustment range is formed, which can perform both large-range adjustment and fine adjustment. This greatly expands the tension adjustable range and adjustment accuracy of the large circular knitting machine. It has both the fineness of electronic drive motor speed regulation and the large adjustment range and adjustability of mechanical speed regulation, which can meet the fine adjustment requirements during the production process of the same product and can also meet the adjustment requirements for switching to the production of any different thickness products, with extremely high practicality.
[0045] It should be noted that: the gear or gear pair used in the speed regulation device 1 of the present utility model can design the transmission ratio according to actual needs. When the existing design does not meet the adjustment range requirements, the change of the adjustment range can also be realized by replacing the gear or gear pair with different transmission ratios, and it is not restricted by control programs, input motor power, etc., with extremely strong versatility and practicality.
[0046] The above are only the preferred embodiments of the present utility model, and do not impose any limitation on the technical scope of the present utility model. Therefore, any minor modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the protection scope of the present utility model.
Claims
1. A winding tension control device for a circular knitting machine, comprising a base (2), the base (2) being rotatably provided with a rotating frame (3), the rotating frame (3) being provided with a winding assembly (4) and a speed regulating device (1), the speed regulating device (1) being used for converting input power into a required speed output, thereby adjusting the tension of the winding assembly (4); Features: The speed regulating device (1) is fixed to the bottom of the rotating frame (3) and rotates with the rotating frame (3). The speed regulating device (1) comprises a power area (101) and a speed regulating area (102). The power area (101) is provided with fixed teeth (1a) and movable teeth (1b). The fixed teeth (1a) are fixedly connected to the base (2). The fixed teeth (1a) mesh with the movable teeth (1b). The fixed teeth (1a) and the movable teeth (1b) are both bevel gears and their axes are perpendicular to each other. When the speed regulating device (1) rotates with the rotating frame (3), the movable teeth (1b) are relative to the rotating frame (3). The fixed teeth (1a) mesh and rotate to convert the power of the rotating frame (3) into the input power of the speed regulating device (1); the speed regulating area (102) is provided with a first speed regulating mechanism (2a), a second speed regulating mechanism (2b) and a third speed regulating mechanism (2c), wherein the first speed regulating mechanism (2a) is transmitted with the movable teeth (1b) to quickly convert the input power to a required power range; the second speed regulating mechanism (2b) transmits the output power of the first speed regulating mechanism (2a) to the third speed regulating mechanism (2c), and the third speed regulating mechanism (2c) is provided with an output shaft (2h) connected to the winding assembly (4).
2. The winding tension control device of a circular knitting machine according to claim 1, characterized in that: The speed regulating area (102) is provided with a driving shaft (2d), a first transmission shaft (2e), a second transmission shaft (2f) and the output shaft (2h); the driving shaft (2d) extends to the power area (101) and is fixedly connected to a movable tooth (1b) at the end; the first speed regulating mechanism (2a), the second speed regulating mechanism (2b) and the third speed regulating mechanism (2c) are all provided with a plurality of switchable gear sets with different transmission ratios; wherein the driving gear of the first speed regulating mechanism (2a) is provided on the driving shaft (2d) and rotates coaxially therewith; The driven gear of the first speed regulating mechanism (2a) is a shifting gear, the driven gear of the first speed regulating mechanism (2a) and the driving gear of the second speed regulating mechanism (2b) are both arranged on the first transmission shaft (2e) and rotate coaxially therewith, the driving gear of the second speed regulating mechanism (2b) is a shifting gear, the driven gear of the second speed regulating mechanism (2b) and the driving gear of the third speed regulating mechanism (2c) are both arranged on the second transmission shaft (2f) and rotate coaxially therewith, and the driven gear of the third speed regulating mechanism (2c) is arranged on the output shaft (2h) and rotate coaxially therewith.
3. The winding tension control device of a circular knitting machine according to claim 2, characterized in that: The first transmission shaft (2e) and the second transmission shaft (2f) are arranged on both sides of the driving shaft (2d). The first speed regulating mechanism (2a) comprises a first input gear (2a1), a step-changing gear pair (2a2), an output gear (2a4) and a first driven gear (2a5). The first input gear (2a1) and the output gear (2a4) can both be meshed with the first driven gear (2a5). The first input gear (2a1) rotates coaxially with the driving shaft (2d). The step-changing gear pair (2a2) can The first driven gear (2a5) is rotatably arranged on the second transmission shaft (2f), the large gear of the step-changing gear pair (2a2) is meshed with the first input gear (2a1), the small gear of the step-changing gear pair (2a2) is meshed with the output gear (2a4), and the first driven gear (2a5) is connected to the first adjusting knob (2a6). When switching gears, the first adjusting knob (2a6) controls the first driven gear (2a5) to move along the first transmission shaft (2e) and respectively mesh with the first input gear (2a1) or the output gear (2a4) to achieve gear shifting.
4. The winding tension control device of a circular knitting machine according to claim 3, characterized in that: The first speed regulating mechanism (2a) further comprises (n-2) groups of output gear pairs (2a3), the step-changing gear pairs (2a2) are provided with (n-1) groups, the output gear pairs (2a3) and the step-changing gear pairs (2a2) are combined to form the gear extension of the first speed regulating mechanism (2a), the step-changing gear pairs (2a2) are freely rotatable relative to the second transmission shaft (2f), the output gear pairs (2a3) are freely rotatable relative to the driving shaft (2d), and the step-changing gear pairs (2a2) are small. The gear meshes with the large gear of the next output gear pair (2a3), the large gear of the previous output gear pair (2a3) meshes with the large gear of the same-stage variable gear pair (2a2), and so on until the small gear of the last variable gear pair (2a2) meshes with the output gear (2a4); when switching gears, the first driven tooth meshes with the first input gear (2a1), the large gear of the corresponding gear output gear pair (2a3) or the output gear (2a4) respectively under the control of the first regulating rotation to achieve gear shifting.
5. The winding tension control device of a circular knitting machine according to claim 4, characterized in that: The step-changing gear pair (2a2) has the same gear ratio, the output gear pair (2a3) has the same gear ratio, the first input gear (2a1) adopts a single gear or a gear pair with the same gear ratio as the output gear pair (2a3), and the output gear (2a4) is a single gear and has the same number of gears as the large gear of the output gear pair (2a3).
6. The winding tension control device of a circular knitting machine according to claim 2, characterized in that: The first transmission shaft (2e) and the second transmission shaft (2f) are arranged on both sides of the driving shaft (2d); the second speed regulating mechanism (2b) comprises a second input gear (2b1), an intermediate gear pair (2b2) and a second driven gear (2b3); the second input gear (2b1) is a driving gear; the second input gear (2b1) is connected to a second adjusting knob (2b5); the intermediate gear pair (2b2) and the second driven gear (2b3) are each provided with two groups; the intermediate gear pair (2b2) is mirror-mounted on the driving shaft (2d) and is freely rotatable relative to the driving shaft (2d); the large gear of the intermediate gear pair (2b2) is meshed with the second input gear (2b1); the small gear of the intermediate gear pair (2b2) is meshed with the corresponding second driven gear (2b3); when shifting gears, the second adjusting knob (2b5) controls the second input gear (2b1) to move along the first transmission shaft (2e) and mesh with the intermediate gear pair (2b2) of the corresponding gear position.
7. A winding tension control device for a circular knitting machine according to claim 6, characterized in that: The second input gear (2b1) adopts a gear pair, and its large gear and small gear are respectively meshed with different intermediate gear pairs (2b2).
8. The winding tension control device of a circular knitting machine according to claim 1, characterized in that: The third speed regulating mechanism (2c) comprises a third input gear (2c1), a third driven gear (2c2), a third transmission shaft (2g) and the output shaft (2h), wherein the third input gear (2c1) is connected to the output end of the second speed regulating mechanism (2b), the third transmission shaft (2g) is provided with a first transition gear (2c3) which rotates coaxially, the first transition gear (2c3) and the third input gear (2c1) are meshed, a rotatable shift assembly (2c4) is slidably provided on the third transmission shaft (2g), the shift assembly (2c4) comprises a second transition gear (2c4a), a third transition gear (2c4b) and a pair of mounting ears (2c4c) arranged on both sides, the second transition gear (2c4a) is arranged at the lower part of the shift assembly (2c4) and rotates coaxially with the third transmission shaft (2g), the third transition gear (2c4b) is arranged at the upper part of the shift assembly (2c4) and rotates coaxially with the second transition gear ( 2c4a), the mounting ear piece (2c4c) is sleeved on the third transmission shaft (2g) and can slide and rotate relative to it, and the mounting ear piece (2c4c) on one side extends upward to form a swing rod (2c4d), and the swing rod (2c4d) controls the engagement or separation of the third transition gear (2c4b) and the third driven gear (2c2); the third driven gear (2c2) is provided with a plurality of gears, and the gear cutting assembly (2c4) is connected to the gear by a rack (2 c6) is connected to a third adjusting knob (2c7). When shifting gears, the swing lever (2c4d) is moved to separate the third transition gear (2c4b) from the third driven gear (2c2). The third adjusting knob (2c7) drives the shifting assembly (2c4) to move along the third transmission shaft (2g) to the third driven gear (2c2) of the corresponding gear position. The swing lever (2c4d) is moved in the opposite direction to mesh the third transition gear (2c4b) with the third driven gear (2c2) to complete the gear shift.
9. A winding tension control device for a circular knitting machine according to claim 8, characterized in that: The third driven gear (2c2) is arranged in descending order of the number of teeth and fits tightly together to form an integrated multi-stage gear, and the joint surfaces of two adjacent stages are provided with a rib (2c2a), and the rib (2c2a) has the same diameter as the large gear and is used to prevent the third transition gear (2c4b) from sliding toward the adjacent gear with a smaller number of teeth.
10. The winding tension control device of a circular knitting machine according to claim 1, characterized in that: The power zone (101) is arranged in the middle area of the speed regulating device (1); the speed regulating zone (102) comprises a first speed regulating zone (102a) and a second speed regulating zone (102b); the first speed regulating mechanism (2a) and the second speed regulating mechanism (2b) are arranged in the first speed regulating zone (102a); and the third speed regulating mechanism (2c) is arranged in the second speed regulating zone (102b).