JPH0138735B2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application The present invention relates to a tension applying roller during multi-filament winding in a slitter line, which can stably apply a low tension and has excellent control responsiveness until a predetermined tension is reached. The present invention relates to a tension applying roller for multi-filament winding. BACKGROUND TECHNOLOGY In general, winding on a slitter line involves unwinding a wide coil of metal thin plate, etc., and slitting it into multiple strips with the required dimensions. , is wound up by a winding machine. However, with the structure of conventional tensioning rollers,
There are variations in the braking force between the plurality of divided rollers attached to the tension applying roller, resulting in inconsistencies in the winding tension between each slit strip, making it difficult to apply a low tension, and also making it difficult to maintain the set tension. There were problems such as poor responsiveness until reaching the destination. As shown in FIG. 1, the structure of a conventional tensioning roller is such that a roller shaft 2 whose shaft portions at both ends are supported by a bearing stand 1 has a key 3 protruding in the axial direction of the shaft body, and a key groove is inserted into the roller shaft 2. A plurality of intermediate rings 4 are mounted so as to be slidable in the axial direction, and a braking disc with brake shoes 5 mounted on both outer peripheral ends of the roller shaft body between each intermediate ring 4 is provided. 6 is fixed. Further, a roller ring 9 whose outer circumferential surface is coated with a rubber lining 8 is rotatably attached to the outer circumferential surface of the intermediate ring 4 via a bearing 7, and the intermediate ring 4 and roller ring 9 form a divided roller. A support plate 10 is fixed to one end of a roller shaft 2 which is formed and driven by a motor, and a pressure ring member 11 is attached to the other end so as to be slidable in the axial direction, and an outer roller ring 9 is attached via a brake shoe 5. The piston rod 13 of the air cylinder 12 attached to the other end of the shaft 2 is inserted into the shaft space and pressed against the contact rod 14 which is projected from the pressing ring member 11 into the body shaft space. The brake shoe 5 is brought into contact with the end surface between each roller ring 9, and the rotation of each roller ring 9 is controlled by the braking force. Problems with the Prior Art The conventional tensioning roller configured as described above utilizes a key protruding from the roller shaft and a keyway provided on the intermediate roller to stop the rotation of the intermediate ring 4 when rotated by motor drive. , there is a lot of friction between the two, and the axial sliding of the intermediate ring 4 requires a large force and lacks smoothness. In addition, the brake shoe 5 has a high coefficient of friction and poor surface flatness, so although it can easily generate a large braking force, it is not suitable for the small braking force that is required, and the braking force is divided between individual brake shoes. Differences in size tend to occur, and as mentioned above, there are variations in braking force between the plurality of divided rollers attached to the tension applying roller, resulting in inconsistency in the winding tension between each slit strip, making it difficult to apply low tension. There were also problems such as poor responsiveness until the set tension was stably reached. In addition, recently, slitter lines for high-grade special metal alloys used in electronic and electrical parts, etc., are winding while controlling and eliminating slitter distortion, making it possible to apply tension stably and uniformly to the winding process. The tension is required to be as low as possible without causing any problems, and furthermore, in the tension annealing process of continuous multi-strip processing, it is necessary to equalize the tension and speed up the control response. Purpose of the Invention In view of the current situation, the present invention aims to improve a tension applying roller during multi-thread winding in a slitter line, and is capable of applying low tension stably and uniformly.
The object of the present invention is to provide a tension applying roller for multi-filament winding that has excellent control responsiveness until reaching a predetermined tension. Composition of the Invention The present invention has both shaft ends pivotally supported and a contact ring provided around the center, and a pair of pressing devices attached to the shaft ends and capable of pressing toward the contact ring using fluid pressure. A bearing is interposed between the small roller and the shaft protrusion in the body between the pressing device of the roller shaft, and the follower roller is fixed on the protrusion side and can roll in contact with the inner wall of the follower groove on the small roller side. A roller ring whose outer periphery is coated with a rubber lining is rotatably mounted on the outer circumferential surface of each intermediate ring via a bearing, and one end of each intermediate ring The adjacent roller ring is supported via a thrust bearing between both surfaces of the thrust support plate extending in the diametrical direction and the pressing device. This tension applying roller for winding multiple threads is characterized in that an elastic body is interposed between the ring and the pressing device to synchronously adjust the rotational torque of each roller ring. This invention uses a follower roller to stop the rotation of the intermediate ring and to slide it in the axial direction, and the contact between the follower groove and the small roller is a line contact with little friction, and the force required for sliding the intermediate ring is small. The movement is smooth, and since a thrust bearing is used between the roller rings, the friction coefficient is small.The thrust bearing is easy to obtain machining flatness, and the friction coefficient is constant over the ring circumference, so the generated braking force is small. can stably generate a braking force proportional to the pressing force, and furthermore, since an elastic body is interposed between the intermediate ring and the pressing member, immediate response to the pressing force of the pressing member can be obtained, and the braking force can be generated stably. It has the advantages of preventing rotational unevenness in the tension and making it possible to make adjustments to minimize the difference in tension between each strip.It is also possible to apply low tension stably and uniformly, and to control the tension until it reaches a predetermined tension. A tension applying roller for multi-filament winding with excellent responsiveness can be obtained. In this invention, the bearings between the intermediate ring and the roller ring include ordinary ball bearings,
Metal bearings such as oil-impregnated metal may be used. In addition to thrust roller bearings, rolling bearings and oil-impregnated metal bearings can also be used as thrust bearings, and various types of elastic bodies such as springs and rubber can be used. Disclosure of the invention based on the drawings Examples will be described in detail below based on the drawings. FIG. 2 is a partially longitudinal explanatory view of the tension applying roller according to the present invention, FIG. The figure is an explanatory diagram showing a follow-up roller. FIG. 5 is an explanatory diagram of a divided roller formed by an intermediate ring and a roller ring. The roller shaft 20 has both shaft ends supported by a bearing stand 1 having ball bearings, and has an abutment ring 21 projecting around the center of a large-diameter body. A single follow-up groove 22 is cut out. Further, each body end of the roller shaft 20 includes a cylinder portion 31 and a piston portion 32.
Air is introduced into the pressure chamber 34 from the plug 24 at the right end of the plug 24 through the shaft space 25, and the pressing device 30, which has a piston portion 32 protruding in the axial direction, directs the piston side toward the abutment ring 21 and presses the cylinder portion 31. is fixed with a nut 23, the tip of the piston part 32 forms a pressing ring part 33 extending in the diametrical direction, and a thrust bearing 42 is provided on the outer peripheral end surface. A plurality of shaft protrusions 51 are fixed to the inner circumferential surface of the intermediate ring 40 arranged in the direction of the roller shaft 20, in this case four on each side with the abutment ring 21 in between, and the shaft is connected to the shaft protrusion through needle rollers 53. Supported small roller 5
By inserting the outer periphery of the small roller 52 in contact with the wall of the following groove 22 of the body of the roller shaft 20 by the following roller 50 consisting of 2, that is, a cam follower, the small roller 52 is fixed in the rotational direction of the roller shaft 20. It is attached so as to be slidable in the axial direction. Here, a follower groove was provided on the roller shaft 20 side, but
As shown in FIG. 3b, a follower groove may be provided on the intermediate ring 40 side. In the present invention, the following roller may be any roller having a rotatable shaft protrusion and a small roller outside the cam follower. One end surface of the intermediate ring 40 serves as a diametrically extending thrust support plate portion 41, and thrust bearings 42 are fixed to both surfaces of the outer peripheral end of the support plate. Further, a bearing 43 is provided on the outer peripheral surface of the intermediate ring 40.
A roller ring 45 having a rubber lining 44 on its outer peripheral surface is rotatably mounted. That is, each roller ring 45 is supported by a bearing 43 and a thrust bearing 42 in the rotational direction and the axial direction. Elastic bodies 46 are interposed between all the intermediate rings 40 except between the pair of intermediate rings 40 sandwiching the contact ring 21 and between the intermediate ring 40 and the piston portion 32 of the pressing device, respectively, at a plurality of locations or around the circumference. I've let it happen. In the above configuration, when the roller shaft 20 is rotated by driving the motor, rotational force is transmitted from the intermediate ring 40 to each rotatable roller ring 45 via the thrust bearing 42, and the pressing device 30
By varying the pressure of the air introduced into the pressure chamber 34, the pressing force between the abutment ring 21 at the center of the shaft and the pressing ring portion 33 changes, and the axial pressing force applied to each thrust bearing 42 can be variably adjusted. The braking force generated at the thrust bearing portion 42 is also adjusted, the rotational force is controlled, and when the material to be processed is wound around the main roller, the tension at the time of multiple winding can be controlled. Table 1 shows a comparison of the performance of the conventional tension applying roller shown in FIG. 1 and the tension applying roller according to the present invention having the above configuration, and shows that the tension applying roller of the present invention can apply low tension stably and uniformly. It can be seen that the tension applying roller for multi-filament winding has excellent control responsiveness until reaching a predetermined tension. 【table】

[Brief explanation of drawings]

FIG. 1 is a partially longitudinal sectional view of a conventional tension applying roller. FIG. 2 is a partial longitudinal cross-sectional view of the tensioning roller according to the present invention, FIGS. 3a and 3b are explanatory views of two methods of mounting the follower roller on the intermediate ring and the roller shaft, and FIG. 5 is an explanatory diagram showing a follower roller, and FIG. 5 is an explanatory diagram of a divided roller formed by an intermediate ring and a roller ring. 1...Bearing stand, 20...Roller shaft, 21
... Contact ring, 22 ... Follower groove, 23 ... Nut, 24 ... Plug, 25 ... Shaft empty, 30 ... Pressing device, 31 ... Cylinder section, 32 ... Piston section, 33 ... Pressing Ring part, 34...Pressure chamber, 4
0... Intermediate ring, 41... Thrust support plate part,
42... Thrust bearing, 43... Bearing, 44...
Rubber lining, 45...Roller ring, 46...
...Elastic body, 50...Following roller, 51...Shaft protrusion, 52...Small roller, 53...Needle roller.

Claims (1)

[Claims] 1 Between the pressing devices of a roller shaft, which has both ends of the shaft supported, a contact ring surrounding the center, and a pair of pressing devices attached to the shaft ends and capable of pressing toward the contact rings using fluid pressure. The body is made up of a small roller with a bearing interposed therebetween and a shaft protrusion, and the follower roller is fixed on the protrusion side and can roll in contact with the inner wall of the follower groove on the small roller side, and multiple intermediate rings are formed in the axial direction. is installed so that it can slide only in the axial direction, and a roller ring whose outer periphery is covered with a rubber lining is installed rotatably through a bearing on the outer peripheral surface of each intermediate ring, and a Adjacent roller rings are supported via thrust bearings between both sides of the thrust support plate part extending around the circumference and the pressing device, and all intermediate rings and pressing devices except between the intermediate rings that sandwich the abutment ring. A tension applying roller for multi-filament winding, characterized in that the rotational torque of each roller ring is synchronously adjusted by interposing an elastic body therebetween.