CN221093284U - Rotation speed ratio adjusting mechanism and double-roller device - Google Patents

Abstract

The application provides a rotation speed ratio adjusting mechanism, which comprises a transmission assembly, a rotation assembly, a driven assembly and an elastic assembly, wherein the transmission assembly is connected with the driven assembly; the rotating assembly comprises a main body piece, a tightening piece, a first track piece and a second track piece; the first track piece is fixedly connected to one end of the main body piece, the second track piece is sleeved outside the main body piece, and the tightening piece is in threaded connection with the other end of the main body piece and is attached to one surface of the second track piece, which is opposite to the first track piece; a transmission bearing position is formed between two opposite surfaces of the first track piece and the second track piece, and the width of the transmission bearing position is gradually increased along the radial direction far away from the main body piece; the driven component and the rotating component are fixed in relative positions; the transmission assembly is sequentially wound on the transmission bearing position and the driven assembly; the elastic end of the elastic component acts on the transmission component; the application also provides a double-roller device. The application can adjust the rotation speed ratio between the rotating component and the driven component under the condition that only one driving component is arranged and the rotating component or the driven component is not required to be replaced.

Description

Rotation speed ratio adjusting mechanism and double-roller device

Technical Field

The utility model relates to the technical field of coil product production equipment, in particular to a rotation speed ratio adjusting mechanism and a double-roller device.

Background

Many products are currently produced in roll form, for example: the plastic film is produced by flowing a molten resin onto a cooling roll by a device, cooling the resin to form a plastic film, and winding the cooled plastic film by a winding machine. When the winding machine is used for winding, the winding roller and the unwinding roller are required to rotate at different rotating speeds, a certain roller speed ratio exists, the winding roller and the unwinding roller are respectively driven by the two driving parts, and the winding machine is complex in structure and high in energy consumption due to the double driving parts.

In the prior art, a mechanism capable of simultaneously driving two inflatable rollers to rotate at a certain roller speed ratio by using a driving piece is provided, the driving piece drives a first inflatable roller to rotate by enabling the two inflatable rollers to be connected with two rotating wheels with different rotating radiuses, the first inflatable roller rotates to drive the first rotating wheel to rotate, and the first rotating wheel drives a second rotating wheel to synchronously rotate by using a driving belt, so that the second inflatable roller is driven. The transmission mode of the transmission belt enables the linear speeds of the two rotating wheels to be identical, and the angular speeds of the first transmission wheel and the second transmission wheel are different due to the fact that the rotating radiuses of the first rotating wheel and the second rotating wheel are different, so that the rotating speeds of the two inflatable rollers are different, and the double rollers can rotate at a certain roller speed ratio. However, the roller speed ratio of the two air-expanding rollers is fixed, the roller speed ratio of the two rollers is required to be adjusted frequently for different production demands in actual work, the roller speed ratio of the two rollers is required to be adjusted, the rotating radius of the two rotating wheels is required to be calculated through the required roller speed ratio, and then the rotating wheels with corresponding specifications are replaced, so that a plurality of rotating wheels with different rotating radiuses are required to be prepared, the equipment input cost is increased, the replacement process is complicated, and the time and the labor cost are wasted.

Disclosure of utility model

Aiming at the defects of the prior art, the application provides a rotation speed ratio adjusting mechanism and a double-roller device.

The application discloses a rotation speed ratio adjusting mechanism, which comprises: the device comprises a transmission assembly, a rotation assembly, a driven assembly and an elastic assembly; the rotating assembly comprises a main body piece, a tightening piece, a first track piece and a second track piece; the first track piece is fixedly connected to one end of the main body piece, the second track piece is sleeved outside the main body piece, and the tightening piece is in threaded connection with the other end of the main body piece and is attached to one surface of the second track piece, which is opposite to the first track piece; a transmission bearing position is formed between two opposite surfaces of the first track piece and the second track piece, and the width of the transmission bearing position is gradually increased along the radial direction far away from the main body piece; the driven component and the rotating component are fixed in relative positions; the transmission assembly is sequentially wound on the transmission bearing position and the driven assembly; the elastic end of the elastic component acts on the transmission component; the torque element rotates, and the second track element is relatively close to or far away from the first track element, so that the rotation radius of the transmission assembly in the transmission bearing position is changed.

Preferably, the transmission assembly is trapezoidal in cross section.

Preferably, the second track member comprises a second track disc and a synchronisation post; one end of the synchronous column is arranged on the second track disc, and the other end of the synchronous column is movably arranged in the first track piece in a penetrating way; the second track disc is movably sleeved outside the main body part and is opposite to the first track part.

Preferably, the tightening piece comprises a tightening main body and a fixing part, and the tightening main body is sleeved on the main body piece and is attached to the second track piece; after the rotating tightening body is adjusted, the tightening body is fixedly connected with the second track piece through the fixing part.

Preferably, the driven assembly has a driven load bearing position.

Preferably, the end of the body member having the smaller outer diameter is fixedly connected to the first track member.

Preferably, the take-up assembly includes a track member and a take-up member; the elastic piece is movably arranged on the track piece; the position of the elastic piece on the track piece is adjusted, so that the elastic piece loosens or compresses the transmission assembly.

Preferably, the elastic member includes a positioning shaft and a rotating wheel; one end of the positioning shaft is rotationally connected with the rotating wheel, and the other end of the positioning shaft is movably arranged on the track piece; the rotating wheel is pressed against the transmission component.

The application also discloses a double-roller device, which comprises a bearing piece, a rotation speed ratio adjusting mechanism, a driving piece, a first roller piece and a second roller piece; the rotation speed ratio adjusting mechanism is arranged on one side of the bearing piece; the driving piece is arranged on one side of the bearing piece far away from the rotation speed ratio adjusting mechanism; the first roller piece is rotationally connected with the bearing piece, one end of the first roller piece is fixedly connected with the main body piece, and the other end of the first roller piece is connected with the driving end of the driving piece; one end of the second roller piece is fixedly connected with the driven component, and the other end of the second roller piece is rotationally connected with the bearing piece; the driving piece drives the first roller to rotate, the first roller rotates to drive the rotating assembly to rotate, the rotating assembly rotates to drive the transmission assembly to rotate, the transmission assembly rotates to drive the driven assembly to be driven, the driven assembly rotates to drive the second roller to rotate, the torsion piece is adjusted, and the rotating speed of the second roller is changed.

Preferably, the first roller piece is arranged in the main body piece in a penetrating way, a key groove is arranged on one side of the main body piece facing the first roller piece, and an adaptive mounting groove is arranged at the position of the first roller piece corresponding to the key groove; a flat key is arranged between the key groove and the mounting groove.

The application has the beneficial effects that: according to the application, the distance between the first track piece and the second track piece is adjusted through the tightening piece, so that the transmission assembly changes the rotation radius of the rotation assembly, the linear speed of rotation of the transmission bearing position is changed on the premise that the angular speed of rotation of the rotation assembly and the transmission bearing position is unchanged, the speed of the transmission assembly is changed, the rotation speed of the driven assembly is driven to be changed, and the roller speed ratio of the two inflatable rollers is adjusted. Thus, the rotation speed ratio between the rotating assembly and the driven assembly can be adjusted under the condition that only one driving piece is arranged and the rotating assembly or the driven assembly does not need to be replaced. The application simplifies the equipment structure, reduces the energy consumption, does not need to store a plurality of rotating assemblies with different specifications, saves the equipment cost, simultaneously does not need to detach and install the rotating assemblies in the adjusting process, saves the tedious replacement process, saves the labor cost and improves the production efficiency.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:

FIG. 1 is a front view of a speed ratio adjustment mechanism in an embodiment;

FIG. 2 is a cross-sectional view of a rotating assembly in an embodiment;

FIG. 3 is an exploded view in section of the rotating assembly in an embodiment;

FIG. 4 is a schematic diagram illustrating the disassembly of the rotating assembly according to the embodiment;

FIG. 5 is a schematic diagram of a driven assembly according to an embodiment;

FIG. 6 is a schematic view of a dual roll device with a speed ratio adjustment mechanism mounted in an embodiment;

Fig. 7 is a schematic diagram showing the connection of the first roller member and the main body member in the embodiment.

Reference numerals:

1. A transmission assembly; 2. a rotating assembly; 21. a body member; 211. a fourth fixing hole; 212. a key slot; 22. a tightening member; 221. twisting the main body; 222. a first fixing hole; 23. a first track member; 231. a transmission bearing position; 232. a synchronizing hole; 233. a third fixing hole; 24. a second track member; 241. a second track disc; 242. a synchronizing column; 243. a second fixing hole; 3. a driven assembly; 31. a slave load-bearing position; 4. an elastic assembly; 41. a track member; 411. a position hole; 42. an elastic member; 421. positioning a shaft; 422. a rotating wheel; 51. a carrier; 511. a bottom beam; 512. a first bearing plate; 513. a second bearing plate; 52. a driving member; 53. a first roller member; 531. a first rotating roller; 532. a first fixed rotating part; 533. a mounting groove; 54. a second roller member; 541. a second rotating roller; 542. and a second fixed rotating part.

Detailed Description

Various embodiments of the application are disclosed in the following drawings, in which details of the practice are set forth in the following description for the purpose of clarity. However, it should be understood that these practical details are not to be taken as limiting the application. That is, in some embodiments of the application, these practical details are unnecessary. Moreover, for the purpose of simplifying the drawings, some conventional structures and components are shown in the drawings in a simplified schematic manner.

It should be noted that all directional indicators such as up, down, left, right, front, and rear … … in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a specific posture such as that shown in the drawings, and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions of the "first," "second," and the like, herein are for descriptive purposes only and are not intended to be specifically construed as order or sequence, nor are they intended to limit the application solely for distinguishing between components or operations described in the same technical term, but are not to be construed as indicating or implying any relative importance or order of such features. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.

For a further understanding of the present application, reference should be made to the following examples, which are set forth to illustrate, by way of illustration, the principles of the application.

Embodiment one:

Referring to fig. 1 to 5, fig. 1 is a front view of a rotation speed ratio adjusting mechanism in an embodiment, fig. 2 is a sectional view of a rotating assembly in an embodiment, fig. 3 is an exploded view of a section of a rotating assembly in an embodiment, fig. 4 is a disassembled schematic view of a rotating assembly in an embodiment, and fig. 5 is a schematic view of a structure of a driven assembly in an embodiment. The rotation speed ratio adjusting mechanism in the embodiment comprises a transmission assembly 1, a rotation assembly 2, a driven assembly 3 and a loosening and tightening assembly 4. The turning assembly 2 comprises a body member 21, a tightening member 22, a first rail member 23 and a second rail member 24. The first track member 23 is fixedly connected to one end of the main body member 21, the second track member 24 is sleeved outside the main body member 21, and the tightening member 22 is screwed to the other end of the main body member 21 and is attached to one surface of the second track member 24 opposite to the first track member 23. The opposite sides of the first rail member 23 and the second rail member 24 form a transmission bearing position 231. The width of the drive carrying locations 231 increases gradually in a radial direction away from the body member 21. The driven component 3 and the rotating component 2 are fixed in relative positions. The transmission assembly 1 is sequentially wound on the transmission bearing position 231 and the driven assembly 3. The bungee end of the bungee assembly 4 acts on the drive assembly 1. The torque element 22 rotates and the second track element 24 moves relatively closer to or further from the first track element 23, thereby changing the radius of rotation of the drive assembly 1 in the drive loading position 231.

The distance between the first track piece 23 and the second track piece 24 is adjusted through the tightening piece 22, so that the transmission assembly 1 changes the rotation radius of the rotation assembly 2, the rotation linear speed of the transmission bearing position 231 is changed on the premise that the rotation angular speed of the rotation assembly 2 and the rotation angular speed of the transmission bearing position 231 are unchanged, the speed of the transmission assembly 1 is changed, the rotation speed of the driven assembly 3 is driven to be changed, and the rotation speed ratio between the rotation assembly 2 and the driven assembly 3 is adjusted. In this way, the speed ratio between the rotating assembly 2 and the driven assembly 3 can be adjusted without changing the rotating assembly 2 or the driven assembly 3 while only one driving member is provided. The application simplifies the equipment structure, reduces the energy consumption, does not need to store a plurality of rotating assemblies with different specifications, saves the equipment cost, simultaneously does not need to detach and install the rotating assemblies in the adjusting process, saves the tedious replacement process, saves the labor cost and improves the production efficiency.

Referring to fig. 2, the transmission assembly 1 is preferably trapezoidal in cross section. The transmission assembly 1 is sequentially wound outside the transmission bearing position 231 and the driven assembly 3, and the rotation of the rotation assembly 2 is transmitted to the driven assembly 3 through the transmission assembly 1. Because along the radial direction of the main body piece 21, the width of the transmission bearing position 231 is gradually increased along the direction away from the main body piece 21, and the section of the transmission assembly 1 is trapezoidal, the transmission assembly 1 is tightly attached to the transmission bearing position 231, and the transmission assembly 1 and the transmission bearing position 231 are more stable and smooth under the condition that slipping does not occur in the process that the transmission assembly 2 drives the transmission assembly 1 to rotate. Specifically, the transmission assembly 1 is a transmission belt, the section of the transmission belt is isosceles trapezoid, and two oblique sides of the transmission belt are respectively clung to inner walls of two opposite sides of the first rail member 23 and the second rail member 24.

Referring back to fig. 1-4, the second track member 24 preferably includes a second track plate 241 and a synchronization post 242. One end of the synchronizing column 242 is arranged on the second track plate 241, and the other end is movably arranged in the first track member 23 in a penetrating manner. The second rail plate 241 is movably sleeved outside the main body member 21 and is opposite to the first rail member 23. The second track member 24 keeps synchronous rotation with the first track member 23 through the synchronous column 242, so that the rotation synchronism of the first track member 23 and the second track member 24 is ensured, the stability of the transmission bearing position 231 in the rotation process is ensured, and the transmission process between the transmission assembly 1 and the transmission bearing position 231 is more stable and smooth. Specifically, the number of the synchronization columns 242 is plural, the plurality of synchronization columns 242 are sequentially arranged on one side of the second track member 24 facing the first track member 23 in a spacing and annular manner, the positions of the first track member 23 corresponding to the plurality of synchronization columns 242 are correspondingly provided with the synchronization holes 232, and the synchronization columns 242 are movably arranged in the synchronization holes 232 in a penetrating manner. The number of the synchronization columns 242 in this embodiment is four.

Referring back to fig. 1 to 4, the tightening member 22 preferably includes a tightening body 221 and a fixing portion (not shown), and the tightening body 221 is sleeved on the body member 21 and is attached to the second rail member 24. After the rotation of the tightening body 221 is adjusted, the tightening body 221 and the second rail member 24 are fixedly connected by the fixing portion. After the tightening piece 22 is twisted, the tightening piece 22 can be fixedly connected with the second track piece 24, and when the subsequent rotating assembly 2 rotates, the tightening piece 22 and the second track piece 24 are always fixedly connected, so that looseness does not occur in the rotating process, the width of the transmission bearing position 231 is kept unchanged, the rotating radius of the transmission assembly 1 on the transmission bearing position 231 is not changed after the tightening, and the rotating speed ratio between the adjusted rotating assembly 2 and the driven assembly 3 is kept constant. Specifically, the tightening body 221 has a circular ring structure, four first fixing holes 222 are sequentially and annularly arranged along the circular ring direction, and a plurality of second fixing holes 243 are annularly arranged at positions corresponding to the second track member 24. The fixing portion in this embodiment is a fixing screw, and after the tightening member 22 is adjusted, the tightening body 221 is fixedly connected to the second rail member 24 through the fixing screw passing through the first fixing hole 222 and the second fixing hole 243.

Referring to fig. 5, the follower assembly 3 preferably has a follower bearing 31. The driving belt is wound outside the driven bearing position 31, when the driving belt rotates to drive the driven component 3 to rotate, the driving belt is tightly attached to the driven bearing position 31, so that the driving belt does not slip when driving the driven component 3 to rotate, and the driving process is more stable and smooth. Specifically, the driven component 3 is provided with a driven bearing position 31 matched with the shape of a driving belt, and the driving belt is wound outside the driven bearing position 31. Of course, in other embodiments, the width of the driven bearing position 31 is adjustable as that of the rotating bearing position 231, so that the adjusting range of the rotation speed ratio can be further enlarged, and more production scenarios can be applied, and the specific structure will not be repeated here.

Referring back to fig. 1-4, the end of the body member 21 having the smaller outer diameter is preferably fixedly attached to the first track member 23. Specifically, the outer diameter of one end of the main body member 21, which is close to the first track member 23, is smaller, one end of the main body member 21, which has a smaller outer diameter, is inserted into the first track member 23, the first track member 23 is sequentially provided with four third fixing holes 233 in a spacing ring manner, a fourth fixing hole 211 is provided at a position of the main body member 21 corresponding to the third fixing hole 233, and fixing columns (not shown) pass through the third fixing holes 233 and the fourth fixing holes 211 to fix the main body member 21 and the first track member 23. The main part 21 both wears to locate in the first track spare through the one end of less external diameter, fixes through the fixed column again, makes the connection of first track spare 23 and main part 21 more firm, ensures not to take place not hard up in long-time synchronous rotation in-process, promotes main part 21 and first track spare 23 pivoted synchronism and stability.

Referring to fig. 1, the take-up assembly 4 preferably includes a track member 41 and a take-up member 42. The elastic member 42 is movably disposed on the track member 41. The position of the elastic member 42 in the rail member 41 is adjusted so that the elastic member 42 releases or compresses the transmission assembly 1. In the working process of the device, as the elastic piece 42 is movably arranged on the track piece 41, the position of the elastic piece 42 on the track piece 41 is convenient to adjust, when the rotation radius of the transmission assembly 1 at the transmission bearing position 231 is changed, the position of the elastic piece 42 on the track piece 41 is changed, the elastic piece 42 acts on the transmission assembly 1 to tension the transmission assembly 1, so that the transmission assembly 1 is ensured to be tightly attached to the transmission bearing position 231 and the driven assembly 3 at any time, and the stability of transmission is improved. Specifically, the track member 41 has a bar-shaped hole structure, a plurality of position holes 411 are sequentially arranged along the length direction of the track member 41 at intervals, and the plurality of position holes 411 are all located in the bar-shaped hole. The elastic member 42 can be fixed at different positions of the track member 41 through different position holes 411, so that the transmission assembly 1 is limited at different positions, and the effect of the elastic transmission assembly 1 is realized.

More preferably, the elastic member 42 includes a positioning shaft 421 and a rotating wheel 422. One end of the positioning shaft 421 is rotatably coupled to the rotating wheel 422. The other end of the positioning shaft 421 is movably provided to the rail member 41. The rotating wheel 422 is pressed against the transmission assembly 1. Through the setting of the rotating wheel 422, when the elastic member 42 limits the transmission assembly 1, the rotating wheel 422 can slide relative to the transmission assembly 1 in a rotating manner, so that the elastic member 42 can more stably and smoothly tighten the transmission assembly 1. Meanwhile, the positioning shaft 421 can be fixed on different positions of the track member 41, so that the tightness adjustment range of the transmission assembly 1 by the elastic member 42 is enlarged, and the tightness of the transmission assembly 1 can be adjusted to different degrees to meet the actual production requirement. Specifically, the positioning shaft 421 can be screwed to the holes 411 at different positions, and the rotating wheel 422 is rotatably sleeved outside the positioning shaft 421.

The operating principle of the rotation speed ratio adjusting mechanism in this embodiment is as follows:

The main part 21 rotates, drives first track spare 23 and rotates, and first track spare 23 passes through synchronous post 242 and drives the synchronous rotation of second track spare 24, and first track spare 23 forms the transmission between the opposite two sides of second track spare 24 and bear the position 231, and drive assembly 1 is around locating outside bearing the position 231 and driven assembly 3 in proper order, and the elasticity end of elasticity subassembly 4 makes drive assembly 1 and transmission bear the position 231 and driven assembly 3 keep suitable elasticity, and rotation assembly 2 rotates and drives drive assembly 1 and rotate, and drive assembly 1 rotates and drives driven assembly 3 and follow. The adjusting torsion member 22 rotates to push the second track member 24 relatively close to or far away from the first track member 23, so that the width of the transmission bearing position 231 is changed, the rotation radius of the transmission assembly 1 at the transmission bearing position 231 is changed, the position of the elastic member 42 at the track member 41 is adjusted, the elastic end of the elastic member 42 is used for tensioning the transmission assembly 1, at the moment, the rotation speed of the rotation assembly 2 is unchanged, but the rotation speed of the transmission assembly 1 is changed due to the change of the rotation radius, so that the rotation speed of the driven assembly 3 is changed, and the rotation speed ratio of the rotation assembly 2 to the driven assembly 3 is adjustable.

Embodiment two:

Referring to fig. 1 to 6, fig. 6 is a schematic view of a twin roll apparatus equipped with a rotation speed ratio adjusting mechanism in the embodiment. The double-winding roller device in this embodiment includes a carrier 51, a rotation speed ratio adjusting mechanism in the first embodiment, a driving member 52, a first roller member 53, and a second roller member 54. The rotation speed ratio adjusting mechanism is provided on one side of the carrier 51. The driving member 52 is disposed on a side of the carrier member 51 away from the rotation speed ratio adjusting mechanism. The first roller 53 is rotatably connected to the carrier 51, one end of the first roller 53 is fixedly connected to the main body 21, and the other end is connected to the driving end of the driving member 52. One end of the second roller 54 is fixedly connected with the driven assembly 3, and the other end is rotatably connected with the bearing member 51. The driving piece 52 drives the first roller piece 53 to rotate, the first roller piece 53 rotates to drive the rotating assembly 2 to rotate, the rotating assembly 2 rotates to drive the transmission assembly 1 to rotate, the transmission assembly 1 rotates to drive the driven assembly 3 to be driven, the driven assembly 3 rotates to drive the second roller piece 54 to rotate, the torsion piece 22 is adjusted, and the rotating speed of the second roller piece 54 is changed. In the working process, the rotation speed of the second roller piece 54 can be adjusted on the premise of not changing the rotation speed of the first roller piece 53 through the arrangement of the rotation speed ratio adjusting mechanism, so that the rotation speed ratio between the first roller piece 53 and the second roller piece 54 is changed, and the requirements of different roller speed ratios between the double rollers in production are met.

Specifically, the bearing member 51 includes a bottom beam 511, a first bearing plate 512 and a second bearing plate 513, where the bottom beam 511 is disposed on the floor of the factory, and the first bearing plate 512 and the second bearing plate 513 are vertically fixed on the bottom beam 511. The rotation speed ratio adjusting mechanism is disposed on a side of the first bearing plate 512 away from the second bearing plate 513. The first roller member 53 includes a first rotating roller 531 and two first fixed rotating portions 532 disposed at two ends of the first rotating roller 531, the first fixed rotating portion 532 is rotationally connected with the first rotating roller 531, the first rotating roller 531 is fixedly mounted between two opposite sides of the first bearing plate 512 and the second bearing plate 513 through the two first fixed rotating portions 532, and one end of the first rotating roller 531 is connected with the driving end of the driving member 52, and the other end is fixedly disposed in the rotating assembly 2 in a penetrating manner. The second roller member 54 includes a second rotating roller 541 and two second fixed rotating portions 542 disposed at two ends of the second rotating roller 541, where the second rotating roller 541 is fixedly mounted between two opposite sides of the first bearing plate 512 and the second bearing plate 513 by the two second fixed rotating portions 542, and one end of the second rotating roller 541 is rotatably connected to the driven component 3, and the other end is rotatably disposed on the second bearing plate 513. The driving member 52 is a servo motor, and drives the first roller member 53 to rotate by means of a driving wheel, which will not be described herein.

Referring to fig. 7, fig. 7 is a schematic connection diagram of the first roller and the main body in the embodiment, more preferably, the first roller 53 is disposed in the main body 21 in a penetrating manner, a key slot 212 is disposed on a side of the main body 21 facing the first roller 53, and a fitting mounting slot 533 is disposed on the first roller 53 corresponding to the position of the key slot 212. A flat key (not shown) is installed between the key groove 212 and the installation groove 533. Through the setting of mounting groove 533 and keyway 212, not only be convenient for the physiosis roller of the different specifications of main part 21 adaptation in order to satisfy different demands in the production, but also can make the rotation of first roller part 53 and main part 21 keep in step, promote pivoted synchronism and stability. Specifically, the main body member 21 has a cylindrical structure, after the first roller member 53 is inserted into the main body member 21, an installation groove 533 is formed at one end of the first roller member 53, which is close to the main body member 21, one end of the flat key is installed in the installation groove 533, and the other end is clamped in the key slot 212.

The working process of the double-roller device in this embodiment is as follows:

The driving piece 52 drives the first roller piece 53 to rotate, the first roller piece 53 rotates to drive the rotating assembly 2 to rotate, the rotating assembly 2 drives the driven assembly 3 to rotate through the transmission assembly 1, and the driven assembly 3 rotates to drive the second roller piece 54 to be driven. The driving member 52 drives the first roller member 53 to rotate at a constant speed, and the rotation speed ratio between the first roller member 53 and the second roller member 54 is changed by adjusting the rotation speed ratio adjusting mechanism, the principle and the process are as described in the first embodiment, which will not be repeated here.

In summary, the distance between the first track piece and the second track piece is adjusted through the tightening piece, so that the transmission assembly changes the linear speed of rotation of the transmission bearing position on the premise that the rotational radius of the rotation assembly is changed and the angular speed of rotation of the rotation assembly and the transmission bearing position is unchanged, the speed of the transmission assembly is changed, the rotation speed of the driven assembly is driven to be changed, and the roller speed ratio of the two inflatable rollers is adjusted. Thus, the rotation speed ratio between the rotating assembly and the driven assembly can be adjusted under the condition that only one driving piece is arranged and the rotating assembly or the driven assembly does not need to be replaced. The application simplifies the equipment structure, reduces the energy consumption, does not need to store a plurality of rotating assemblies with different specifications, saves the equipment cost, simultaneously does not need to detach and install the rotating assemblies in the adjusting process, saves the tedious replacement process, saves the labor cost and improves the production efficiency.

The above is merely an embodiment of the present application, and is not intended to limit the present application. Various modifications and variations of the present application will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, or the like, which is within the spirit and principles of the present application, should be included in the scope of the claims of the present application.

Claims (10)

1. A rotation speed ratio adjustment mechanism, comprising:

A transmission assembly (1);

A rotating assembly (2) comprising a body member (21), a tightening member (22), a first track member (23) and a second track member (24); the first track piece (23) is fixedly connected to one end of the main body piece (21), the second track piece (24) is sleeved outside the main body piece (21), and the tightening piece (22) is in threaded connection with the other end of the main body piece (21) and is attached to one surface, opposite to the first track piece (23), of the second track piece (24); a transmission bearing position (231) is formed between two opposite surfaces of the first track piece (23) and the second track piece (24); the width of the transmission bearing position (231) gradually increases along the radial direction away from the main body piece (21);

A driven component (3) which is fixed relative to the rotating component (2); the transmission assembly (1) is sequentially wound on the transmission bearing position (231) and the driven assembly (3); and

A tightening assembly (4) the tightening end of which acts on the transmission assembly (1);

the tightening member (22) rotates, and the second track member (24) is relatively close to or far away from the first track member (23), so that the rotation radius of the transmission assembly (1) in the transmission bearing position (231) is changed.

2. Rotation speed ratio adjusting mechanism according to claim 1, characterized in that the transmission assembly (1) is trapezoidal in cross section.

3. The speed ratio adjustment mechanism of claim 1, characterized in that the second track member (24) comprises a second track disc (241) and a synchronization post (242); one end of the synchronous column (242) is arranged in the second track disc (241), and the other end of the synchronous column is movably arranged in the first track piece (23) in a penetrating way; the second track disc (241) is movably sleeved outside the main body piece (21) and is opposite to the first track piece (23).

4. The rotation speed ratio adjusting mechanism according to claim 1, wherein the tightening member (22) comprises a tightening body (221) and a fixing portion, and the tightening body (221) is sleeved on the body member (21) and is attached to the second track member (24); after the tightening body (221) is rotated to be adjusted, the tightening body (221) is fixedly connected with the second track piece (24) through the fixing part.

5. Rotation speed ratio adjusting mechanism according to claim 1, characterized in that the driven assembly (3) has a driven bearing (31).

6. A rotation speed ratio adjusting mechanism according to claim 1, wherein the end of the main body member (21) having the smaller outer diameter is fixedly connected to the first rail member (23).

7. The rotation speed ratio adjustment mechanism according to claim 1, characterized in that the take-up assembly (4) comprises a track member (41) and a take-up member (42); the elastic piece (42) is movably arranged on the track piece (41); the position of the elastic piece (42) on the track piece (41) is adjusted, so that the elastic piece (42) loosens or compresses the transmission assembly (1).

8. The rotation speed ratio adjustment mechanism according to claim 7, characterized in that the takeup element (42) comprises a positioning shaft (421) and a rotating wheel (422); one end of the positioning shaft (421) is rotationally connected with the rotating wheel (422), and the other end of the positioning shaft (421) is movably arranged on the track piece (41); the rotating wheel (422) is pressed against the transmission assembly (1).

9. A dual roll device, comprising:

a carrier (51);

The rotation speed ratio adjusting mechanism according to any one of claims 1 to 8, which is provided on one side of the carrier (51);

A driving member (52) provided on a side of the carrier member (51) away from the rotation speed ratio adjustment mechanism;

the first roller (53) is rotationally connected with the bearing piece (51), one end of the first roller (53) is fixedly connected with the main body piece (21), and the other end of the first roller is connected with the driving end of the driving piece (52); and

A second roller (54) having one end fixedly connected to the driven member (3) and the other end rotatably connected to the carrier (51);

the driving piece (52) drives the first roller piece (53) to rotate, the first roller piece (53) rotates to drive the rotating assembly (2) to rotate, the rotating assembly (2) rotates to drive the transmission assembly (1) to rotate, the transmission assembly (1) rotates to drive the driven assembly (3) to be driven, the driven assembly (3) rotates to drive the second roller piece (54) to rotate, the tightening piece (22) is adjusted, and the rotating speed of the second roller piece (54) is changed.

10. The double-roller device according to claim 9, wherein the first roller (53) is inserted into the main body (21), a key groove (212) is arranged on one side of the main body (21) facing the first roller (53), and an adaptive mounting groove (533) is arranged at a position of the first roller (53) corresponding to the key groove (212); a flat key is installed between the key groove (212) and the installation groove (533).