Roller driving mechanism and roller device

Abstract

The utility model discloses a roller driving mechanism and a roller device, and relates to the technical field of textile machinery, the roller driving mechanism comprises a driving motor and a transmission gear box, the transmission gear box is connected with a roller, a transmission gear set is arranged in the transmission gear box, and the transmission gear set is connected with the driving motor. The output end of the transmission gear set is connected to the roller. The roller driving mechanism further comprises a reduction gear box, the reduction gear box is connected to the transmission gear box, and an inner cavity of the reduction gear box is communicated with the transmission gear box. A reduction gear set is arranged in the reduction gear box, the input end of the reduction gear set is connected to a rotating shaft of the driving motor, and the reduction gear set is in meshing transmission with the transmission gear set. Accurate control of forward and reverse rotation of the roller can be achieved, and user operation is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of textile machinery technology, in particular to a roller driving mechanism and a roller device. Background Art

[0002] Rollers are devices used to pull fabric in computerized flat knitting machines. They are driven by a motor, which drives two rollers to rotate toward each other, holding the fabric between them. As the motor rotates, the rollers rotate toward each other, pulling the fabric downward through friction.

[0003] In traditional loom rollers, the Chinese utility model patent with publication number CN221276028U discloses a flat knitting machine roller drive structure and a knitting machine, wherein the flat knitting machine roller drive structure includes a second drive motor, the rotating shaft of the second drive motor is connected to the main sprocket, and the end of the roller roller is connected to the secondary sprocket. The main sprocket and the secondary sprocket are connected by a chain, so that when the motor rotates, the roller roller can be driven to rotate.

[0004] In the prior art, because the chain needs to be tensioned during transmission, when the motor rotates in one direction, the chain on one side between the primary and secondary sprockets is tightened to drive the secondary sprocket, while the chain on the other side between the primary and secondary sprockets is relatively slack. If the roller needs to rotate in the opposite direction at this time, the motor drives the primary sprocket in the opposite direction. At this time, because the chain on this side is relatively slack, the primary sprocket needs to rotate a certain angle to tighten the chain before it can drive the secondary sprocket to rotate. There is a delay before the rotation output of the motor reaches the secondary sprocket and roller, resulting in reduced accuracy in the forward and reverse rotation control of the rollers and inconvenient operation. Utility Model Content

[0005] In order to solve the defects existing in the roller driving mechanism in the prior art, the utility model provides a roller driving mechanism, which can realize precise control of the forward and reverse rotation of the roller and is convenient for user operation.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] According to a first aspect of the present invention, a roller drive mechanism is provided for driving a roller to rotate, the roller drive mechanism comprising a drive motor and a transmission gear box, the transmission gear box being connected to the roller, a transmission gear set being provided in the transmission gear box, and an output end of the transmission gear set being engaged with the roller roller;

[0008] The roller drive mechanism also includes a reduction gearbox, which is used to reduce the speed of the drive motor. The reduction gearbox is connected to the transmission gearbox, and the inner cavity of the reduction gearbox is communicated with the transmission gearbox; a reduction gear group is provided in the reduction gearbox, the input end of the reduction gear group is connected to the rotating shaft of the drive motor, and the reduction gear group is meshed with the transmission gear group for transmission.

[0009] Furthermore, the transmission gearbox and the reduction gearbox are staggered, and the reduction gearbox is connected to the side of the transmission gearbox away from the roller roller; a first avoidance position is formed above the reduction gearbox and the side of the transmission gearbox away from the roller roller, and a second avoidance position is formed on the side of the reduction gearbox facing the transmission gearbox and below the transmission gearbox.

[0010] Furthermore, the reduction gear set includes an input gear, a reduction gear and an output gear; the input gear is coaxially fixed to the rotating shaft of the drive motor, the reduction gear is meshed between the input gear and the output gear, and the output gear is meshed with the transmission gear set.

[0011] Furthermore, there are four reduction gears, which are defined as a first reduction gear, a second reduction gear, a third reduction gear and a fourth reduction gear. The first reduction gear is engaged between the input gear and the second reduction gear, the second reduction gear is coaxially fixed with the third reduction gear, the third reduction gear is engaged with the fourth reduction gear, and the fourth reduction gear is coaxially fixed with the output gear.

[0012] Furthermore, the number of teeth of the first reduction gear is greater than that of the input gear, the number of teeth of the second reduction gear is greater than or equal to that of the first reduction gear, and the number of teeth of the third reduction gear is less than that of the fourth reduction gear.

[0013] Furthermore, the diameter of the third reduction gear is smaller than the diameter of the second reduction gear, and the diameter of the output gear is smaller than the diameter of the fourth reduction gear.

[0014] Furthermore, the transmission gear group includes a first transmission gear and a second transmission gear, the first transmission gear is engaged with the output gear, the second transmission gear is engaged with the first transmission gear, the second transmission gear is fixedly connected to the roller roller, and the number of teeth of the first transmission gear is greater than the number of teeth of the output gear.

[0015] Furthermore, the transmission gear set also includes a first transition wheel and a second transition wheel, the first transition wheel is coaxially fixed with the first transmission gear and the first transition wheel is located on the side of the first transmission gear close to the roller roller; the second transition wheel is engaged between the first transition wheel and the second transmission gear.

[0016] According to a second aspect of the present invention, a roller device is provided, comprising a roller roller and the roller driving mechanism as described above, wherein the end of the roller roller is connected to the output end of the transmission gear set of the driving mechanism.

[0017] Furthermore, at least one group of roller rollers is provided, each group of roller rollers includes two roller rollers arranged in parallel, and each roller roller is connected to one of the roller driving mechanisms.

[0018] In summary, the present invention has the following beneficial effects:

[0019] 1. In the present invention, the roller drive mechanism is rotated by the motor, and the rotation of the motor is transmitted to the transmission gear set in the transmission gear box through the reduction gear set in the reduction gear box, and is output to the roller roller after being decelerated by the transmission gear set, thereby driving the roller roller to rotate; compared with the chain transmission method in the traditional technology, the present solution does not have the problem of chain tension and slack. When the motor rotates, it can immediately drive the roller roller to rotate, so that the roller roller can respond immediately when the motor switches forward and reverse, thereby facilitating accurate control of the forward and reverse rotation of the roller roller and facilitating user operation; at the same time, the reduction gear box and the transmission gear box are connected and communicated in the present solution, and the roller can be directly supported by the reduction gear box and the transmission gear box, eliminating the traditional roller support structure; the transmission structure between the motor and the transmission gear box is accommodated in the box body. Compared with the exposed sprocket setting in the traditional chain transmission structure, the enclosed reduction gear set and transmission gear set in the present solution can prevent fabric debris from entering, thereby ensuring that the motor drives the roller roller to rotate normally.

[0020] 2. The transmission gearbox and the reduction gearbox are staggered so that the reduction gearbox and the transmission gearbox form a first avoidance position and a second avoidance position, so that a shearing mechanism can be set outside the roller to shear the fabric, or other driving mechanisms can be set at the second avoidance position under the transmission gearbox to meet the needs of setting up a double-layer roller.

[0021] 3. The reduction gear group reduces speed through multiple gears. Specifically, the number of teeth of the first reduction gear is greater than the number of teeth of the input gear, thereby realizing the first stage of reduction; the second reduction gear rotates at the same speed as the third reduction gear, and the number of teeth of the third reduction gear is less than the number of teeth of the fourth reduction gear, thereby realizing the second stage of reduction, and the output gear is coaxially connected to the fourth reduction gear, so that the output gear rotates at the same speed as the fourth reduction gear; thereby, the reduction gear can provide a greater reduction effect, thereby ensuring that the final rotational torque output to the roller roller is larger, so as to meet the needs of pulling the fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of a roller device according to one embodiment of the present invention.

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of a roller driving mechanism according to an embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of the decomposition structure of the roller drive mechanism of an embodiment of the present invention. Figure 1 .

[0025] Figure 4 This is a schematic diagram of the decomposition structure of the roller drive mechanism of an embodiment of the present invention. Figure 2 .

[0026] Figure 5 It is a schematic diagram of the three-dimensional structure of a reduction gear set according to an embodiment of the present invention.

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of a transmission gear set in one embodiment of the present utility model.

[0028] Figure 7 It is a three-dimensional structural diagram of a reduction gear set and a transmission gear set in one embodiment of the present utility model.

[0029] In the picture:

[0030] 1000. Roller device; 100. Roller roller; 200. Roller driving mechanism; 210. Driving motor; 220. Transmission gearbox; 230. Reduction gearbox; 240. Transmission gear set; 241. First transmission gear; 242. Second transmission gear; 243. First transition wheel; 244. Second transition wheel; 250. Reduction gear set; 251. Input gear; 252. Output gear; 253. First reduction gear; 254. Second reduction gear; 255. Third reduction gear; 256. Fourth reduction gear; 260. First avoidance position; 270. Second avoidance position; 300. Shearing mechanism. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the accompanying drawings.

[0032] This embodiment discloses a roller device 1000, referring to Figure 1 The roller assembly 1000 includes at least one set of rollers 100 and a roller drive mechanism 200. Each set of rollers 100 includes two adjacent rollers 100 arranged in parallel. Each roller 100 is connected to a drive mechanism. The drive mechanism can drive the two rollers 100 to rotate toward each other to pull the fabric, or drive the two rollers 100 to rotate in opposite directions to loosen the fabric.

[0033] In this embodiment, the roller assembly 1000 is a double-layer roller assembly, comprising two parallel sets of rollers 100 arranged one above the other. These two sets of rollers 100 pull the fabric from above and below, respectively, enhancing the traction effect. The roller drive mechanism 200 connected to the upper rollers 100 is vertically arranged to support them at a greater height above the ground, facilitating the placement of the lower rollers below them. The roller drive mechanism 200 connected to the lower rollers 100 is horizontally arranged to facilitate placement within the space below the upper rollers 100.

[0034] Among them, each roller roller 100 is connected to a roller drive mechanism 200, and the two roller rollers 100 in a group of roller rollers 100 are driven to rotate by different roller drive mechanisms 200, so that the two roller rollers 100 can rotate synchronously at the same speed, or rotate at different speeds according to different needs, to meet the different traction requirements of the roller device 1000.

[0035] In this embodiment, a shearing mechanism 300 is further provided outside the end of the roller 100. The shearing mechanism 300 is used to shear the fabric. The specific structure thereof is the same as that in the prior art and will not be described in detail here.

[0036] Reference Figure 2 In this embodiment, the roller drive mechanism 200 is used to drive the roller 100 to rotate. The roller drive mechanism 200 includes a drive motor 210, a transmission gearbox 220, and a reduction gearbox 230. The transmission gearbox 220 is connected to the end of the roller 100, and the reduction gearbox 230 is connected to the transmission gearbox 220. The drive motor 210 is connected to the reduction gearbox 230.

[0037] Reference Figures 2 to 4 The inner cavity of the reduction gear box 230 is communicated with the transmission gear box 220. The transmission gear box 220 is provided with a transmission gear set 240. The output end of the transmission gear set 240 is engaged with the roller 100. The reduction gear box 230 is provided with a reduction gear set 250. The input end of the reduction gear set 250 is connected to the rotating shaft of the drive motor 210. The reduction gear set 250 is meshed with the transmission gear set 240 for transmission.

[0038] In this embodiment, the rotation of the drive motor 210 is decelerated by the reduction gear set 250 in the reduction gear box 230 and then transmitted to the transmission gear set 240 in the transmission gear box 220. The transmission gear set 240 outputs the power to the roller 100, thereby driving the roller 100 to rotate. Compared with the chain transmission method in the conventional technology, this embodiment does not have the problem of chain tension and slack. When the motor rotates, it can immediately drive the roller 100 to rotate. Therefore, when the motor switches between forward and reverse rotation, the roller 100 can respond immediately, thereby facilitating precise control of the forward and reverse rotation of the roller 100 and facilitating user operation.

[0039] Among them, the reduction gear group 250 and the transmission gear group 240 are both housed in the box. Compared with the exposed sprocket setting in the traditional chain transmission structure, the enclosed reduction gear group 250 and the transmission gear group 240 in this solution can prevent fabric debris from entering, ensuring that the motor can normally drive the roller roller 100 to rotate.

[0040] In this embodiment, the reduction gearbox 230 is connected and communicated with the transmission gearbox 220, and the roller roller 100 is directly supported by the reduction gearbox 230 and the transmission gearbox 220, thereby eliminating the need to set up an additional support structure at the end of the roller roller 100, thereby saving costs.

[0041] The transmission gearbox 220 and the reduction gearbox 230 are staggered, that is, the transmission gearbox 220 and the reduction gearbox 230 are not located on the same plane. Specifically, the reduction gearbox 230 is connected to the side of the transmission gearbox 220 away from the roller 100, and the reduction gearbox 230 is arranged at a lower height than the transmission gearbox 220. The drive motor 210 is arranged on the side of the reduction gearbox 230 away from the transmission gearbox 220.

[0042] Thus, the staggered arrangement of the reduction gearbox 230 and the transmission gearbox 220 creates a first clearance 260 above the reduction gearbox 230 and on the side of the transmission gearbox 220 facing away from the roller 100. A second clearance 270 is formed between the side of the reduction gearbox 230 facing the transmission gearbox 220 and below the transmission gearbox 220. The first clearance 260 above the reduction gearbox 230 reserves space for the installation of the shearing mechanism 300, facilitating installation. The second clearance 270 below the transmission gearbox 220 facilitates the installation of the lower roller and its motor and gearbox. This results in a compact and rational overall structure for the roller assembly 1000.

[0043] Reference Figure 3 、 Figure 5 and Figure 7The reduction gear set 250 includes an input gear 251, a reduction gear, and an output gear 252. The input gear 251 is coaxially fixed to the rotating shaft of the drive motor 210. The reduction gear is meshed between the input gear 251 and the output gear 252. The output gear 252 is meshed with the transmission gear set 240. This allows the rotation of the drive motor 210 to be transmitted to the transmission gear set 240.

[0044] In this embodiment, the reduction gear set 250 reduces the speed of the transmission motor. The reduction is only performed through the reduction gear set 250. There is no need to change the reduction ratio of the existing transmission gear set 240. The existing transmission gear set 240 can still be used, reducing the mold making cost of components such as gears.

[0045] In this embodiment, a plurality of reduction gears are provided, and the plurality of reduction gears are sequentially engaged to adapt to the length of the reduction gear box 230. In addition, in other embodiments, only one reduction gear may be provided between the input gear 251 and the output gear 252.

[0046] Specifically, in this embodiment, four reduction gears are provided, namely, a first reduction gear 253, a second reduction gear 254, a third reduction gear 255, and a fourth reduction gear 256. The first reduction gear 253 and the second reduction gear 254 are arranged in the same plane, and the first reduction gear 253 is meshed between the input gear 251 and the second reduction gear 254. The second reduction gear 254 and the third reduction gear 255 are fixed on the same gear shaft, and the third reduction gear 255 is located on the side of the second reduction gear 254 facing away from the drive motor 210 to adapt to the shape of the inner cavity of the reduction gear box 230.

[0047] The third reduction gear 255 and the fourth reduction gear 256 are located in the same plane and mesh with the fourth reduction gear 256. The fourth reduction gear 256 and the output gear 252 are fixed on the same gear shaft, and the output gear 252 is located on the side of the fourth reduction gear 256 away from the drive motor 210.

[0048] In this embodiment, the first reduction gear 253 has a greater number of teeth than the input gear 251, achieving the first stage of reduction in the reduction gear set 250. The second reduction gear 254 has a greater number of teeth than or equal to the first reduction gear 253. The third reduction gear 255 has a smaller number of teeth and a smaller diameter than the second reduction gear 254. The third reduction gear 255 rotates coaxially and at the same speed as the second reduction gear 254. The fourth reduction gear 256 has a greater number of teeth and a greater diameter than the third reduction gear 255, achieving the second stage of reduction in the reduction gear set 250. The output gear 252 rotates coaxially and at the same speed as the fourth reduction gear 256. The output gear 252 has a smaller number of teeth and a smaller diameter than the fourth reduction gear 256.

[0049] In the reduction gearbox 230 , bearings are provided at both ends of each gear shaft, the inner ring of the bearing is fixed to the gear shaft, and the outer ring of the bearing is fixed to the inner wall of the reduction gearbox 230 , thereby making the reduction gear set 250 rotate more smoothly.

[0050] In this embodiment, the arrangement of the reduction gear set 250 is adapted to the staggered arrangement of the reduction gear box 230 and the transmission gear box 220 , and the structure is compact, reasonable, simple and reliable.

[0051] Reference Figure 4 、 Figure 6 and Figure 7 The transmission gear set 240 includes a first transmission gear 241 and a second transmission gear 242. The first transmission gear 241 is engaged with the output gear 252, and the second transmission gear 242 is engaged with the first transmission gear 241. The second transmission gear 242 is fixedly connected to the roller roller 100, so that the rotation output by the output gear 252 can be transmitted to the roller roller 100 via the first transmission gear 241 and the second transmission gear 242.

[0052] Among them, the number of teeth of the first transmission gear 241 is greater than the number of teeth of the output gear 252, so that the transmission gear group 240 further reduces the speed and increases the distance of the rotation output of the motor to meet the pulling demand of the roller roller 100.

[0053] Specifically, in this embodiment, the reduction ratio of the roller drive mechanism 200 is 1:20, that is, the rotational speed output by the drive motor 210 is reduced to 1 / 20 of the original speed after being regulated by the reduction gear set 250 and the transmission gear set 240, thereby increasing the rotational torque output by the motor and outputting it to the roller 100. In other embodiments, the reduction ratio of the roller drive mechanism 200 may also be other appropriate values.

[0054] The transmission gear set 240 also includes a first transition wheel 243 and a second transition wheel 244. The first transition wheel 243 and the first transmission gear 241 are fixed on the same gear shaft, and the first transition wheel 243 is located on the side of the first transmission gear 241 closer to the roller 100. The second transition wheel 244, the first transition wheel 243, and the second transmission gear 242 are arranged in the same plane, and the second transition wheel 244 meshes between the first transition wheel 243 and the second transmission gear 242. This allows the transmission gear set 240 to fit within the space inside the transmission gear box 220.

[0055] The above description is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structure, features and principles described in the scope of the present invention patent application are included in the scope of the present invention patent application.

Claims

1. A roller drive mechanism for driving a roller (100) to rotate, characterized in that: The roller drive mechanism (200) comprises a drive motor (210) and a transmission gear box (220), wherein the transmission gear box (220) is connected to the roller (100), a transmission gear set (240) is provided in the transmission gear box (220), and an output end of the transmission gear set (240) is engaged with the roller (100); The roller drive mechanism (200) further includes a reduction gearbox (230), the reduction gearbox (230) being used to reduce the speed of the drive motor (210), the reduction gearbox (230) being connected to the transmission gearbox (220), and the inner cavity of the reduction gearbox (230) being in communication with the transmission gearbox (220); a reduction gear set (250) being provided in the reduction gearbox (230), the input end of the reduction gear set (250) being connected to the rotating shaft of the drive motor (210), and the reduction gear set (250) being meshed with the transmission gear set (240) for transmission.

2. A roller drive mechanism according to claim 1, characterized in that: The transmission gearbox (220) and the reduction gearbox (230) are staggered, and the reduction gearbox (230) is connected to the side of the transmission gearbox (220) away from the roller roller (100); the upper part of the reduction gearbox (230) and the side of the transmission gearbox (220) away from the roller roller (100) form a first avoidance position (260), and the side of the reduction gearbox (230) facing the transmission gearbox (220) and the lower part of the transmission gearbox (220) form a second avoidance position (270).

3. A roller drive mechanism according to claim 2, characterized in that: The reduction gear set (250) comprises an input gear (251), a reduction gear and an output gear (252); the input gear (251) is coaxially fixed to the rotating shaft of the drive motor (210); the reduction gear is meshed between the input gear (251) and the output gear (252); and the output gear (252) is meshed with the transmission gear set (240).

4. A roller drive mechanism according to claim 3, characterized in that: The reduction gears are provided with four, which are defined as a first reduction gear (253), a second reduction gear (254), a third reduction gear (255) and a fourth reduction gear (256). The first reduction gear (253) is engaged between the input gear (251) and the second reduction gear (254). The second reduction gear (254) and the third reduction gear (255) are coaxially fixed. The third reduction gear (255) is engaged with the fourth reduction gear (256). The fourth reduction gear (256) is coaxially fixed with the output gear (252).

5. A roller drive mechanism according to claim 4, characterized in that: The number of teeth of the first reduction gear (253) is greater than the number of teeth of the input gear (251), the number of teeth of the second reduction gear (254) is greater than or equal to the number of teeth of the first reduction gear (253), and the number of teeth of the third reduction gear (255) is less than the number of teeth of the fourth reduction gear (256).

6. A roller drive mechanism according to claim 4, characterized in that: The diameter of the third reduction gear (255) is smaller than the diameter of the second reduction gear (254), and the diameter of the output gear (252) is smaller than the diameter of the fourth reduction gear (256).

7. A roller driving mechanism according to claim 3, characterized in that: The transmission gear set (240) includes a first transmission gear (241) and a second transmission gear (242), wherein the first transmission gear (241) is engaged with the output gear (252), and the second transmission gear (242) is engaged with the first transmission gear (241), and the second transmission gear (242) is fixedly connected to the roller (100), and the number of teeth of the first transmission gear (241) is greater than the number of teeth of the output gear (252).

8. A roller driving mechanism according to claim 7, characterized in that: The transmission gear set (240) further includes a first transition wheel (243) and a second transition wheel (244), wherein the first transition wheel (243) is coaxially fixed with the first transmission gear (241) and the first transition wheel (243) is located on a side of the first transmission gear (241) close to the roller roller (100); and the second transition wheel (244) is meshed between the first transition wheel (243) and the second transmission gear (242).

9. A roller device, characterized in that: The roller device (1000) comprises a roller roller (100) and a roller driving mechanism (200) as described in any one of claims 1 to 8, and the end of the roller roller (100) is connected to the output end of the transmission gear set (240) of the driving mechanism.

10. A roller device according to claim 9, characterized in that: At least one group of roller rollers (100) is provided, each group of roller rollers (100) includes two roller rollers (100) arranged in parallel, and each roller roller (100) is connected to one roller driving mechanism (200).

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