JPS5811454A - Sheet winding shaft controllable with torque - Google Patents

Abstract

PURPOSE:To improve winding control performance, workability, durability and simplicity, by constituting the shaft such that a collar is locked or released in the periphery of a hollow driving shaft by protruding or retracting movement of a friction lug from the inside of the shaft while the periphery of the collar and a sheet winding core pipe are locked or released by a roller clutch. CONSTITUTION:A core pipe C is fitted to the periphery of a collar 2, turned to move a small roller 7 toward the shallower part of a recessed part 6, and fixed. Then compressed air is fed to an expansion hose 3 and expanded, a friction lug 5 is externally protruded and forcibly attached to an internal surface of the collar 2. Accordingly, rotary motion of a hollow driving shaft 1 rotates the collar 2 through the friction lug 5 further the core pipe C through the small roller 7. In this constitution, adjustment of pressure in the expansion hose 3 can adjust locking force of the collar 2 and rotary torque of the core pipe C. In this way, winding control performance, workability, durability and interchangeability can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a torque-controllable sheet winding shaft. , to adjust the friction between the friction lug pushed out from inside the shaft and the collar, and the collar has a concave part with a dovetail cross section on the circumferential surface, and a small roller in the concave part has protrusions on both end faces to prevent it from falling off. The main feature is that the collar and the core tube can be connected and released by rotating the collar and the core tube for wrapping the seal relative to each other.

Prior art similar to this invention includes Japanese Patent Application Publication No. 52-102116!1 and Utility Model Application Publication No. 55-2, which were previously developed by the present inventor.
There is No. 7202. Also, recently, the patent application No. 56-5701
! There is a number. In addition, when the internal pressure of the hollow drive shaft is increased,
When the core tube is chucked from the inside and the internal pressure is lowered, it comes off, and when the drive shaft is rotated relative to the core tube, the three-part cylindrical body interposed between the shaft and the core tube becomes a steel ball or a roller. Some things extend outward or return due to rolling. There are few machines that connect and release the shaft and core tube directly using a roller clutch method, and these require a complicated mechanism to prevent the rollers from falling off the shaft when the core tube is removed from the shaft.

This invention is based on the above-mentioned patent application No. 56-5701! As mentioned above, improvements in this issue include the ability to control the winding tension by adjusting the internal pressure of the hollow shaft to adjust the rotational driving force transmitted to the numerous collars fitted on the shaft, and the ability to connect the core tube and cutters using a roller clutch system. - can be easily connected and released, has an extremely simple mechanism to prevent the rollers from falling off, and has achieved a winding shaft that combines the three elements of winding control performance, workability, and simplicity.

Next, the configuration and embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is an external view of one embodiment of the present invention.

1 is a hollow drive shaft, and a large number of collars are arranged on the outer surface of this shaft 1. A core tube C having the same width as the winding sheet is fitted into the surface of the color coater, and the sheet 8 is wound around the core tube C. The winding driving force is transmitted from the drive shaft 1 to several color rollers supporting the core tube 0, and is transmitted to the core tube 0 by the clutch action of the small rollers of the color rollers. The details are shown in Figures 2 to 4. The main components of this composite winding shaft io, which consists of a drive shaft I and a collar two, are a drive shaft 1 with an expansion and contraction hose J passed through its hollow core.
1. Friction lugs S1 are slid onto the outer periphery of the hollow drive shaft 1 and are pushed out of the shaft when the internal pressure of the expansion and contraction hose 3 is increased. A large number of collars receive a frictional driving force according to the internal pressure of the expansion and contraction hose 3 by the outer end surface of the friction lug j, and a recess 6 with a dovetail cross section provided on the outer peripheral surface of each collar, and a recess 6 that fits into the recess 6 and falls off at both ends. These include small roller roughs with protrusions for prevention.

When the sheet-wrapping core tube 0 fitted on the outer peripheral surface of the collar is rotated relative to the collar, the small roller rough rolls into both deep and shallow positions of the concave portion 4 due to its frictional drive, releasing the core tube C and collar two. I decided to combine them.

As the expansion and contraction hose 3, a thick-walled rubber tube was used. In this example, the through hole on the axis l is an elongated hole in the axial direction, and the - holes are provided with friction lugs Sf:
I have four of them on each. The friction lugs S are shown in FIG. 3, and each has a seat Sα that fits around the outer circumference of the hose 3.

In this example, there are 12 through-carrots for each same cross-sectional position of axis l.
They are spaced at 0° intervals, that is, radially in three directions, and are spaced apart by 60" from the adjacent position. - The width of the collar is the same as the width of the friction lug S, or slightly wider The take-up shafts are aligned and fitted over the entire effective length of the winding shaft.It is also possible to fit them without any gaps along the entire length, and stop the left and right movement with shaft stoppers at both ends, but in this example, when the four collars are fitted without any gaps, the shaft I outer circumferential groove In this case, the color collar is fitted with a replaceable friction ring on its inner circumference, and the adjacent collars are in contact with each other only on the mouth side of the collar. Guess it's there.

The concave portion 4 on the outer periphery of the collar and the small roller rough therein constitute an important feature of the invention. In the winding shaft of Japanese Patent Application No. 56-57012, the steel ball was replaced with a small roller rough. When the steel ball is used to connect the tool 1 and the core tube 0 in a second ball clutch type, a groove tends to be formed on the inner periphery of the paper core tube 0.

When the groove goes around once, the clutch action becomes ineffective.

- If the roller clutch type is used, the above disadvantages will be eliminated, but in the case of steel balls, both edges of the concave portion 6 are slightly pushed inward to prevent the rice from falling off, which is impossible in the case of rows and rows. Therefore, as mentioned above, a complicated fall-off prevention mechanism is required! In this invention, the concave portion 6 has a dovetail cross section, and the slopes on both sides control the protrusions 7α on both end faces of the small roller rough for the purpose of preventing it from falling off.

5 to 12 show examples of three types of concave bases and small roller roughs. In the case of Figures 5 to 7, a concave groove with a dovetail cross section is dug on the circumferential surface of the shaft I using an umbrella-shaped electric ring cutter, and a square bar rail I is buried at the center line of the groove and used as a stopper to screw the screw l.
− is planted. The small roller rough has a small diameter portion 7h in the center so as to roll on the rail ll. The protrusions a on both end faces are caught on both slopes 6a of the concave portion to prevent the small roller from falling off.

The base of the concave part was dug so that it was deeper at the back, so at the position where the small roller hit the back wall (Figures 5 and 7), it was only slightly protruding from the color surface, and Core tube 0 is slipping.

When the core tube 0 is turned in the opposite direction, the small roller rough is rolled by the friction drive and moves to the shallow entrance side of the recessed part 4, and moves from the collar to the circumference as shown by the solid line in Figure 2 and the chain line in Figure 7. protrude from the surface.

Due to this protrusion, the small roller 7 bites into the fitting surface of the core tube 0 and the collar, thereby joining them together like a wedge.

The embodiments shown in Figures 8, 9, and LO have rails i in the recess 6.
t is not provided, and the small diameter portion 7b is not provided in the small roller rough. Therefore, there is no means to restrict the small roller luff from moving straight, but the head of the stopper screw l is shaped like a square bar, so that when the small roller luff comes into contact with it, it corrects its posture. This embodiment is for the transfer of the small roller rough.The embodiment shown in Figs.
Lightly file the left and right edge 6h near the straight #JIK part to make a straight line, and use this as a guide for the small roller rough.
Both end faces of the small roller rough have a flat outer periphery and a projection 7α at the center.

The screws on the stopper are two regular screws arranged side by side.

Although the small roller rough is not inserted into the concave portion 1 in FIG. 4, any of the above-mentioned small roller roughs may be inserted therein.

The concave portions 6 have the same shape. However, when digging the concave portion 4,
It is okay to not stop at the back and miss the exit to the other side. You can install a stopper, such as a screw, to stop the small roller at a suitable depth.

Next, the handling and operation of this winding shaft IO will be explained.

In FIG. 1, the winding shaft 10 is supported at both ends by bearings, but when the wound sheet roll is removed from the shaft together with the core tube C, at least one bearing is removed.

When winding next time, push the new core tube 0 to the required position around the shaft, that is, around the outer periphery of the collar. At that time, turn the core tube 0 lightly,
The small roller rough is pushed into the recessed part 4 while moving it to a deep position.

When the desired position is reached, turn it in the opposite direction on the spot, and the small roller luff will be moved to the shallower side of the recess and fixed there. In this way, the required number of core tubes C are fitted onto the shaft 10, and when each preparation for winding is completed, compressed air is sent to the expansion hose 3, in this case. This pushes all the friction lugs j outward, pressing the outer lugs against the inner surface of the collar.

When the motor is started and the hollow drive shaft I is rotated, each friction lug S rotates together, and each kahoo also rotates due to the frictional drive. Since each color coil and the core tube 0 are already connected via the small rollers 7, the core tube C winds up the sheet with a rotational torque proportional to the internal pressure of the expansion hose 3. As winding progresses and the diameter of the sheet roll on the core tube C increases, taper control for adjusting the winding torque can be easily performed by simply adjusting the air pressure to the expansion hose 3 in the case of the winding shaft of the present invention. This allows for precise control.

When winding is complete, the sheet roll (core tube) and shaft i.

By relatively rotating the rollers in the opposite direction to the winding direction, the small roller rough moves deeper into the concave portion 6, so that the sheet roll and core tube can be easily removed from the shaft.

Although the present invention has been described above with reference to a small number of embodiments, it goes without saying that the present invention can be varied and applied in various ways according to the well-known techniques of the designer without changing its gist. Even though it is called a winding shaft, it can also be used for heating and rewinding.

Conventionally, the expansion and contraction hose was inserted into a hollow winding shaft.41 The core tube was simply connected to and released from the shaft depending on the level of the hose internal pressure, but this invention uses the same hose internal pressure to precisely control the sheet winding torque. It was used as a control means. For the friction drive part of the collar, which is an important part of the torque transmission mechanism, the steel ball pair and groove, which the inventor had previously developed, were eliminated, and the friction lug end face was paired with the inner surface of the collar. This significantly improved durability and replaceability.

In addition, we have adopted a roller clutch system, which is ideal for fixing and releasing the core tube, which determines the workability and simplicity of the winding shaft. This problem was solved in the simplest form by using a protrusion on the end face. Since it is the simplest method, it has become possible to reduce the width of the collar to 10 m or less, which is a significant achievement in terms of sheet winding technology. The narrower the width of the collar, the more accurate the proportional relationship between the width of the winding sheet 8 (the width of the core tube 0) and the number of collars driven by this t becomes. This increases accuracy.

That is, this invention makes it possible to control the winding torque by frictionally driving the inner periphery of the collar arranged around the outer periphery of the hollow drive shaft using friction lugs and fluid pressure, and by creating a dovetail-shaped recess on the outer periphery of the collar. The core tube was fixed using a roller clutch method that would not fall off, and due to its simplicity, the accuracy of torque control was improved due to the minimum width of the collar.The overall effect was to reach the ideal level as a winding shaft. It is no exaggeration to call it a thing.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of one embodiment of the present invention, FIG. 2 is a cross-sectional view thereof, FIG. 3 is a perspective view of a friction lug thereof, and FIG. 4 is a partial longitudinal sectional view of the winding shaft of FIG. 1. Figure 5 is a perspective view of the outer surface of the collar, Figures 6 and 7 are cross-sectional and longitudinal cross-sectional views of the recess, and Figures 8, 9 and 10 are plane, cross-sectional and longitudinal cross-sectional views of other embodiments of the recess. , 11 and 12 are plan and cross-sectional views of another embodiment of the recess. ! ...Hollow drive shaft, Co., collar, 3.. Expansion and contraction hose, 5.. Friction lug, 6.. Concave portion, 7.. Small roller.

Claims (1)

[Claims] A drive shaft with an expansion and contraction hose passed through a hollow core. When the drive shaft slides into the numerous through holes radially drilled throughout this shaft and increases the internal pressure of the expansion and contraction hose, friction is pushed outward from the shaft. lugs, respective collars which are lined up on the outer periphery of the hollow drive shaft and which receive a friction driving force according to the internal pressure of the expansion/contraction hose by the outer end surfaces of the respective friction lugs; and small rollers that fit into the recessed portions and have protrusions on both ends to prevent falling off, and when the core tube for sheet winding fitted in the collar surface is rotated relative to the collar,
A torque-controllable sheet winding shaft characterized in that the small roller rolls to both deep and shallow positions of the concave portion by the friction drive to release and connect the core tube and collar.