A transmission mechanism, a rewinder and coiler, and a coating machine

Abstract

The present invention relates to a transmission mechanism, a rewinder and a coater. The transmission mechanism includes a synchronous pulley, a spline transmission shaft, a spline shaft sleeve, an internally meshing gear, an air shaft assembly and a cylinder assembly. The synchronous pulley is fixedly connected to the spline transmission shaft, and the spline shaft sleeve is fixedly connected to the internally meshing gear. The spline shaft sleeve is sleeved on the outer peripheral surface of the spline transmission shaft and rotates synchronously with the spline transmission shaft. The synchronous pulley, the spline transmission shaft, the spline shaft sleeve, the internally meshing gear and the air shaft assembly are coaxially arranged. The cylinder assembly pushes the internally meshing gear to generate an axial displacement. When the internally meshing gear moves axially to the working state, the internally meshing gear is sleeved on the outer peripheral surface of the air shaft assembly and makes the air shaft assembly rotate synchronously with the internally meshing gear. The advantages of the present invention are that on the one hand, the transmission performance and the centering property are good, and on the other hand, the cylinder assembly also makes the air shaft assembly easy to disassemble and assemble, which can be used to solve the problem that the current transmission mechanism is difficult to simultaneously take into account both easy disassembly and assembly and the winding and unwinding stability.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial equipment, and particularly relates to a transmission mechanism, a rewinder and a coater. Background Art

[0002] A coater is an industrial equipment mainly used for the surface coating process production of films, papers, etc. This machine coats a specific functional glue, coating, ink, etc. on a rolled base material, and then winds it up after drying. The rewinder among them is an important part of the coater, and its working principle is to drive an air shaft through a motor to realize the winding and unwinding of materials.

[0003] Since the air shaft needs to be disassembled and assembled frequently to replace the material reel on the one hand, and on the other hand, it is subjected to large circumferential forces during winding, it is particularly difficult to balance the convenience of disassembly and assembly and the winding and unwinding stability for a rewinder applicable to long reels or high power. In view of the problem that the current transmission mechanism is difficult to balance the convenience of disassembly and assembly and the winding and unwinding stability at the same time, it is necessary to conduct further research on the transmission mechanism. Summary of the Invention

[0004] One object of the present invention is to provide a transmission mechanism, a rewinder and a coater to solve the problem that the current transmission mechanism is difficult to balance the convenience of disassembly and assembly and the winding and unwinding stability at the same time.

[0005] To achieve the above object, the present invention adopts the following technical solutions on the one hand:

[0006] A transmission mechanism is applied to a rewinder and includes a synchronous pulley, a spline transmission shaft, a spline shaft sleeve, an internal meshing gear, an air shaft assembly and a cylinder assembly. The synchronous pulley is fixedly connected to the spline transmission shaft, the spline shaft sleeve is fixedly connected to the internal meshing gear, the spline shaft sleeve is sleeved on the outer peripheral surface of the spline transmission shaft and rotates synchronously with the spline transmission shaft. The synchronous pulley, the spline transmission shaft, the spline shaft sleeve, the internal meshing gear and the air shaft assembly are coaxially arranged. The cylinder assembly pushes the internal meshing gear to generate an axial displacement. When the internal meshing gear moves axially to the working state, the internal meshing gear is sleeved on the outer peripheral surface of the air shaft assembly and makes the air shaft assembly rotate synchronously with the internal meshing gear.

[0007] Further, the cylinder assembly includes a cylinder, a push rod and a movable sleeve. The movable sleeve is sleeved outside the spline shaft sleeve and is coaxially arranged with the spline shaft sleeve. The movable sleeve is circumferentially slidably connected to the spline shaft sleeve through a sliding member. The movable sleeve drives the spline shaft sleeve to generate an axial displacement under the push of the cylinder and the push rod.

[0008] Further, the air shaft assembly includes an air shaft and a transmission gear. The transmission gear is fixedly connected to the end of the air shaft. When the internal meshing gear moves axially to the working state, the internal meshing gear is sleeved on the outer peripheral surface of the transmission gear.

[0009] Further, the top end of the air shaft is in a self-locking taper fit with the spline bushing.

[0010] Further, it further includes a seat sleeve. The movable sleeve includes a socket part and a pushing part. The seat sleeve is sleeved outside the socket part. An oil groove is provided between the seat sleeve and the socket part for lubrication. The pushing part extends out of the seat sleeve and is connected to the push rod.

[0011] Further, it further includes a support plate. The support plate is snap-fitted to the outer peripheral surface of the seat sleeve, and the air cylinder is fixed to the support plate.

[0012] Further, two air cylinders and two push rods are symmetrically arranged on both sides of the seat sleeve, and the movable sleeve is correspondingly provided with two symmetrically arranged pushing parts.

[0013] Further, the spline bushing is a rectangular spline bushing.

[0014] On the other hand, the present invention also provides a rewinder, including the above-mentioned transmission mechanism.

[0015] On yet another aspect, the present invention also provides a coater, including the above-mentioned rewinder.

[0016] In this technical solution, by fixedly connecting the synchronous pulley with the spline transmission shaft, fixedly connecting the spline bushing with the internal meshing gear, sleeving the spline bushing on the outer peripheral surface of the spline transmission shaft and synchronously rotating with the spline transmission shaft, and coaxially arranging the synchronous pulley, the spline transmission shaft, the spline bushing, the internal meshing gear and the air shaft assembly, the air cylinder assembly is made to push the internal meshing gear to generate an axial displacement. When the internal meshing gear axially moves to the working state, the internal meshing gear is sleeved on the outer peripheral surface of the air shaft assembly and makes the air shaft assembly synchronously rotate with the internal meshing gear. On the one hand, the transmission performance and the centering property are good. On the other hand, the air cylinder assembly also makes the air shaft assembly easy to disassemble and assemble, and can be used to solve the problem that the current transmission mechanism is difficult to simultaneously take into account both easy disassembly and assembly and the winding and unwinding stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic structural diagram of the transmission mechanism of the present invention;

[0020] Figure 2It is a cross-sectional view of the transmission mechanism of the present invention in one direction;

[0021] Figure 3 It is a cross-sectional view of the transmission mechanism of the present invention in another direction;

[0022] Figure 4 It is an exploded cross-sectional view of the transmission mechanism of the present invention.

[0023] Reference numerals in the drawings: 1, synchronous pulley; 2, spline transmission shaft; 3, spline shaft sleeve; 4, internal meshing gear; 51, cylinder; 52, push rod; 53, movable sleeve; 531, socket part; 532, pushing part; 61, air-expansion shaft; 62, transmission gear; 8, seat sleeve; 9, support plate. Detailed implementation manners

[0024] To make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be given with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0025] In this embodiment, please refer to Figures 1 to 4, A transmission mechanism, applied to a rewinder and winder, includes a synchronous pulley 1, a spline transmission shaft 2, a spline bushing 3, an internal meshing gear 4, an air shaft 61 assembly, and a cylinder 51 assembly. The synchronous pulley 1 is fixedly connected to the spline transmission shaft 2, and the spline bushing 3 is fixedly connected to the internal meshing gear 4. The spline bushing 3 is sleeved on the outer peripheral surface of the spline transmission shaft 2 and rotates synchronously with the spline transmission shaft 2. The synchronous pulley 1, the spline transmission shaft 2, the spline bushing 3, the internal meshing gear 4, and the air shaft 61 assembly are coaxially arranged. The cylinder 51 assembly pushes the internal meshing gear 4 to generate an axial displacement. When the internal meshing gear 4 moves axially to the working state, the internal meshing gear 4 is sleeved on the outer peripheral surface of the air shaft 61 assembly and makes the air shaft 61 assembly rotate synchronously with the internal meshing gear 4. In the present invention, by fixedly connecting the synchronous pulley 1 to the spline transmission shaft 2, fixedly connecting the spline bushing 3 to the internal meshing gear 4, sleeving the spline bushing 3 on the outer peripheral surface of the spline transmission shaft 2 and rotating synchronously with the spline transmission shaft 2, and coaxially arranging the synchronous pulley 1, the spline transmission shaft 2, the spline bushing 3, the internal meshing gear 4, and the air shaft 61 assembly, the cylinder 51 assembly is made to push the internal meshing gear 4 to generate an axial displacement. When the internal meshing gear 4 moves axially to the working state, the internal meshing gear 4 is sleeved on the outer peripheral surface of the air shaft 61 assembly and makes the air shaft 61 assembly rotate synchronously with the internal meshing gear 4. On the one hand, the transmission performance and the centering property are good. On the other hand, the cylinder 51 assembly also makes the air shaft 61 assembly easy to disassemble and assemble, and can be used to solve the problem that the current transmission mechanism is difficult to take into account both easy disassembly and assembly and the winding and unwinding stability. Specifically, the spline bushing 3 can be a rectangular spline bushing. The spline bushing 3 and the spline transmission shaft 2 adopt a rectangular spline structure, which has good centering property, good guiding property, high machining accuracy, and large transmitted torque. It can meet the power transmission requirements of the air shaft 61 of more than 90% of the domestic coating machines' rewinder and winder.

[0026] In an embodiment of the present invention, the cylinder 51 assembly includes a cylinder 51, a push rod 52, and a movable sleeve 53. The movable sleeve 53 is sleeved outside the spline bushing 3 and is coaxially arranged with the spline bushing 3. The movable sleeve 53 is circumferentially slidably connected to the spline bushing 3 through a sliding member. The movable sleeve 53 drives the spline bushing 3 to generate an axial displacement under the push of the cylinder 51 and the push rod 52. The extension and retraction of the cylinder 51 are used for the transmission of the conveyor and disconnection, which is convenient for automatic control and safety detection. To further improve the stability of the mechanism, 2 cylinders 51 and corresponding 2 push rods 52 can be provided. Among them, the 2 cylinders 51 and the 2 push rods 52 are symmetrically arranged on both sides of the seat sleeve 8, and the movable sleeve 53 is correspondingly provided with 2 symmetrically arranged pushing parts 532.

[0027] In an embodiment of the present invention, the air shaft 61 assembly includes an air shaft 61 and a transmission gear 62. The transmission gear 62 is fixedly connected to the end of the air shaft 61. When the internal meshing gear 4 axially moves to the working state, the internal meshing gear 4 is sleeved on the outer peripheral surface of the transmission gear 62. Among them, the top end of the air shaft 61 is in self-locking taper fit with the spline shaft sleeve 3. The end of the air shaft 61 has a self-locking taper design, which is in taper fit with the end taper of the rectangular spline shaft sleeve 3, and has good concentricity.

[0028] In an embodiment of the present invention, the transmission mechanism further includes a seat sleeve 8 and a support plate 9. The movable sleeve 53 includes a socket part 531 and a pushing part 532. The seat sleeve 8 is sleeved outside the socket part 531. An oil groove is provided for lubrication between the seat sleeve 8 and the socket part 531. The pushing part 532 extends outside the seat sleeve 8 and is connected to the push rod 52. The support plate 9 is clamped on the outer peripheral surface of the seat sleeve 8, and the air cylinder 51 is fixed to the support plate 9. Among them, the axial sliding of the movable sleeve 53 and the seat sleeve 8 adopts a large-diameter and long-type guiding structure with oil groove lubrication. It can also be made of 40Cr material, and the parts are hardened by heat treatment. This structure has the advantages of good wear resistance and large structural bearing capacity.

[0029] During operation, a motor (not shown in the figure) drives the synchronous pulley 1 (which can be a synchronous belt pulley) and the spline transmission shaft 2 to rotate, and transmits power to the rectangular spline shaft sleeve 3 with good concentricity. The rectangular spline shaft sleeve 3 is connected to the internal meshing gear 4. The spline transmission shaft 2 and the rectangular spline shaft sleeve 3 can perform axial movement. The air cylinder 51 extends, driving the spline shaft sleeve 3 and the internal meshing gear 4 installed in the movable sleeve 53 to sleeve the transmission gear 62 on the air shaft 61 for power output. The concentricity between the spline shaft sleeve 3 and the air shaft 61 is good, which improves the transmission accuracy, reduces the wear of the air shaft 61, greatly improves the service life of the air shaft 61, and thus enhances the stability of the entire transmission mechanism.

[0030] On the other hand, the present invention also provides a rewinder, including the above-mentioned transmission mechanism.

[0031] On yet another aspect, the present invention also provides a coater, including the above-mentioned rewinder.

[0032] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0033] When the embodiments of the present invention mention ordinal numbers such as "first" and "second", unless they actually express the order according to the context, they should be understood as merely for distinction.

[0034] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as within the scope described in this specification.

[0035] The above-described embodiments only represent several implementation manners of the present invention. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent should be subject to the appended claims.

Claims

1. A transmission mechanism is applied to a rewinder. It is characterized in that It includes a synchronous pulley (1), a spline transmission shaft (2), a spline shaft sleeve (3), an internal meshing gear (4), an air shaft (61) assembly and a cylinder (51) assembly. The synchronous pulley (1) is fixedly connected to the spline transmission shaft (2). The spline shaft sleeve (3) is fixedly connected to the internal meshing gear (4). The spline shaft sleeve (3) is sleeved on the outer peripheral surface of the spline transmission shaft (2) and rotates synchronously with the spline transmission shaft (2). The synchronous pulley (1), the spline transmission shaft (2), the spline shaft sleeve (3), the internal meshing gear (4) and the air shaft (61) assembly are coaxially arranged. The cylinder (51) assembly pushes the internal meshing gear (4) to generate an axial displacement. When the internal meshing gear (4) axially moves to the working state, the internal meshing gear (4) is sleeved on the outer peripheral surface of the air shaft (61) assembly and makes the air shaft (61) assembly rotate synchronously with the internal meshing gear (4). The cylinder (51) assembly includes a cylinder (51), a push rod (52) and a movable sleeve (53). The movable sleeve (53) is sleeved outside the spline shaft sleeve (3) and is coaxially arranged with the spline shaft sleeve (3). The movable sleeve (53) is circumferentially slidably connected to the spline shaft sleeve (3) through a sliding member. The movable sleeve (53) drives the spline shaft sleeve (3) to generate an axial displacement under the push of the cylinder (51) and the push rod (52). The air shaft (61) assembly includes an air shaft (61) and a transmission gear (62). The transmission gear (62) is fixedly connected to the end of the air shaft (61). When the internal meshing gear (4) axially moves to the working state, the internal meshing gear (4) is sleeved on the outer peripheral surface of the transmission gear (62). It further includes a seat sleeve (8). The movable sleeve (53) includes a sleeved portion (531) and a pushing portion (532). The seat sleeve (8) is sleeved outside the sleeved portion (531). An oil groove is provided for lubrication between the seat sleeve (8) and the sleeved portion (531). The pushing portion (532) extends outside the seat sleeve (8) and is connected to the push rod (52).

2. The transmission mechanism according to claim 1, characterized in that, The top end of the air shaft (61) is in self-locking taper fit with the spline shaft sleeve (3).

3. The transmission mechanism according to claim 1, wherein It further includes a support plate (9). The support plate (9) is clamped on the outer peripheral surface of the seat sleeve (8). The cylinder (51) is fixed to the support plate (9).

4. The transmission mechanism according to claim 3, characterized in that 2 cylinders (51) and 2 push rods (52) are symmetrically arranged on both sides of the seat sleeve (8). The movable sleeve (53) is correspondingly provided with 2 symmetrically arranged pushing portions (532).

5. The transmission mechanism according to any one of claims 1 to 4, characterized in that, The spline shaft sleeve (3) is a rectangular spline shaft sleeve.

6. A rewinder, characterized in that, It includes the transmission mechanism according to any one of claims 1 to 5.

7. A coater, characterized in that, It includes the rewinder according to claim 6.

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