JPH0741725Y2 - Winding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial field of application The present invention is a winding device for fitting a large number of paper tubes onto a single winding shaft and winding a tape or the like onto the paper tubes at the same time. It is about.

(B) Conventional technology and its problems Conventionally, the technology related to the winding device has been known.
For example, JP-A-55-56940 and JP-A-58-193129.
JP-A-61-37648, JP-B-40-9542
It is similar to the technique described in the publication.

However, in the technique described in Japanese Patent Laid-Open No. 55-56940, the ball is fitted only from the outside of the guide recess, so that the assembly is easy, but the ball easily comes off and the paper tube The problem was that the ball would come off as it was when pulled out.

Further, the conventional roller type technique disclosed in Japanese Utility Model Laid-Open No. 58-193129 has the following problems. That is, it is the roller that presses and locks the inner surface of the paper tube, and when the roller rolls due to contact with the inner surface of the paper tube, an external force does not act at right angles to the axial direction of the roller, However, when an unevenly distributed load is applied to the roller, the roller does not receive the force of rolling in parallel, and the roller tends to tilt in some direction.

Therefore, in order to eliminate the inclination of the roller with respect to uneven load, it is necessary to have firm support metal fittings that support both ends of the shaft of the roller, and this support metal fitting slides inside the guide recess provided on the outer circumference of the collar. Therefore, it was necessary to insert and arrange it.

Therefore, in addition to the roller, a supporting metal member is required, fitting and assembling of the shaft portions of both are also required, and the supporting strength of the thin shaft supporting the roller needs to be sufficient.

In addition, when the pressure locking body is composed of rollers,
It is necessary to widen the width of the rollers, the distance between the side panels is widened, and the entire width of the pressure locking device is increased.

Further, in the case of the latter conventional technique, a recess is formed in the collar fitted onto the winding shaft, and a restraint such as a leaf spring or a claw is attached to the recess as a pressing locking body, and The paper tube was constrained by pressing the inside of the paper tube at the tip.

Therefore, when the paper tube is inserted into the take-up shaft, the pressing body scrapes the inside of the paper tube, resulting in generation of scrap powder.

Further, in order to prevent the inside of the paper tube from being scraped, the applicant, as a prior art, as shown in FIG. 8, uses a ball or the like arranged in a special guide recess on the outer periphery of the collar to apply a restraint. I configured it. However, in the prior art, the concave portion into which the ball is inserted must have a trapezoidal circumferential end portion as shown in the arrow C view.

Therefore, processing is very difficult and high precision is required. Further, since the pressing portions are provided at three places, the larger the diameter, the larger the interval between the pressing portions, the longer the time from the start of rotation to the time of being restrained, slippage, etc., and the variation occurs when a plurality of windings are wound at the same time. It was. Then, the paper tube was deformed.

Further, Japanese Patent Laid-Open No. 61-37648, which is the third cited example, discloses a ball-type winding device. However, in this technique, it is not possible to directly press and lock the paper tube with a ball. Instead, the paper tube is fitted through the annular body fitted to the outer circumference of the ball, and the ball is configured to press and lock the annular body.

In this case as well, since the groove for holding the ball does not have a recessed portion, the ball falls from the groove. Therefore, an annular body is necessary to suppress this drop.

In the present invention, the ball is held by the collar and the side plates of the balls on the left and right of the collar so that the ball does not fall.

(C) Means for Solving the Problem The present invention is configured as follows in order to solve the above problems.

A plurality of turntables that can rotate with the winding shaft 6 and slide in the axial direction
5,5, friction discs 4,4 arranged inside the rotary discs 5,5, ball side discs 3,3 loosely fitted inside the friction discs 4,4, and ball side discs 3,3 It consists of a collar 1 loosely fitted between the two, and a ball 2 loosely fitted on the outer periphery of the collar 1 between the ball side plates 3,3. Each rotary disc 5,5, each friction disc 4,4, each ball side face A winding device is constructed by applying a lateral pressure to the whole of the boards 3, 3 from the axial direction, and a guide recess 1a having a bottom surface inclined so as to become gradually narrow with respect to a tangent line is formed on the outer peripheral surface of the collar 1. A semicircular groove 1c is formed on the bottom surface of the guide recess 1a,
A guide groove 3 inclined along the bottom surface of the guide recess 1a is provided on an inner surface of the ball side surface plate 3, 3 facing the guide recess 1a.
A and 3a are bored, the collar 1 and the ball side face plates 3 and 3 are integrated by screws 9, and the ball 2 is movably fitted in the guide grooves 3a and 3a and the guide recess 1a.

In addition, the guide concave portion 1a, the guide groove 3a, and the ball 2 are arranged at the apex positions of an odd polygon of 5 or more.

(D) Embodiment The purpose and structure of the present invention are as described above, and the structure of the present invention will be described based on the structure of the embodiment shown in the accompanying drawings.

1 is a perspective view showing a part of the winding device of the present invention taken out, FIG. 2 is a partial front sectional view of the same, FIG. 3 is a sectional view taken along the line AA in FIG. 2, and FIG. Color front view and partial side sectional view, FIG. 5 is a ball side surface front view and side sectional view, FIG. 6 is a rotary disk front view and side sectional view, and FIG. 7 is a friction disk front view and side sectional view. is there.

In the winding device of the present invention, a winding shaft 6, a collar 1, a ball side plate 3, a friction plate 4, and a rotary plate 5 are fitted to each other.
A ball 2 is sandwiched between 3 and 3 to form a restraint tool, and several sets are sequentially fitted to restrain a narrow paper tube, and a winding shaft is urged by a spring or the like from the D and D directions. The winding device rotates integrally with the winding device 6.

That is, the winding shaft 6 is provided with a concave groove 6a in the axial direction, and the rotary disk 5 is provided with a convex portion 5a inside thereof. Therefore, turntable 5
Is slidable in the axial direction, but rotates in the rotation direction together with the winding shaft 6 by the convex portion 5a.

As shown in FIG. 8, the drive winding shaft 6 may be configured so that the rubber tube 10 absorbs air to push up the claw 11 and urge the ball 12 to restrain the collar 13.

A ball side plate 3, via a friction plate 4, 4 between the rotating plates 5, 5.
3, the ball side surface plate 3 is loosely fitted to the winding shaft 6, is movable in the axial direction, and is also manually rotatable in the rotation direction.

However, by rotating the rotary discs 5, 5 from both sides with springs or the like in the D and D directions, the rotation of the rotary disc 5, the friction discs 4,
It can be transmitted to the ball side panel 3 via 4.

A collar 1 is loosely fitted to the winding shaft 6 between the ball side plates 3 and 3, and balls 2, 2 ... Are rotatably fitted between the ball side plates 3 and 3, and screws 9 The ball side panels 3 and 3 and the winding shaft 6 are integrated by 9,9.

In order to rotatably fit the ball 2, the collar 1 has a guide concave portion having a bottom surface inclined so as to be gradually narrowed with respect to a tangent in order to gradually push the ball 2 outward.
1a, 1a ... are drilled, and on the opposite side surfaces of the ball side surface plates 3,3,
The guide grooves 3a, 3a ... Are bored in a direction along the guide recess 1a so as to gradually extend outward.

The guide recess 1a has a semicircular groove 1c at the bottom so as not to be scraped by the rotation of the ball 2.

The guide grooves 3a, 3a ... And the guide recesses 1a, 1a ... Are located at the vertices of the odd regular polygon so that the paper tube 7 is not deformed when restrained. 3b of the ball side plate 3 and 1b of the collar 1 are screw holes for fixing.

(E) Action of the device With such a configuration, when the paper tube 7 is inserted into the winding device and the winding shaft 6 is rotated in the direction of arrow B in FIG. 3,
Power is transmitted by the convex portion 5a of the rotary disk 5, the rotary disks 5, 5 rotate, and the friction disks 4, 4 rotate by the rotation of the rotary disks 5, 5,
The ball side plate 3 and the collar 1 are rotated via the friction plate 4.

With the rotation of the collar 1 and the ball side plates 3,3, the balls 2 roll outward due to the centrifugal force and the friction with the paper tube 7, and the same state occurs as the outer diameter of the winding shaft 6 expands. The inside of the paper tube is tightened by the ball 2 so that the paper tube can be restrained at several places and a tape or the like can be wound.

Conversely, when the winding shaft 6 is rotated in the direction opposite to the arrow B, the balls 2 are pushed into the guide recesses 1a due to the friction between the paper tube 7 and the balls 2, and the outer circumference of the winding shaft 6 is reduced. Then, the engagement state between the paper tube 7 and the take-up shaft 6 is released.

Further, if the paper tube 7 is overloaded and the rotation of the paper tube 7 is braked, or conversely, the paper tube 7 side is forcibly rotated while the winding shaft 6 is in the rotation stopped state, the ball side panel 3 , 3 and the friction plates 4, 4 generate a sliding state, and the rotational force can be released without damaging the balls 2 and the collar 1.

(F) Effect of the Invention Since the present invention is configured as described above, the following effects can be obtained.

First, in the case where the pressing locking body is composed of a roller as in the technology disclosed in Japanese Utility Model Laid-Open No. 58-193129, when the roller rolls due to contact with the inner surface of the paper tube, When an unevenly distributed load is applied to the roller even if the external force does not act at right angles to the axial direction of the roller, the roller does not receive a force to roll in parallel, and the roller tends to tilt. Therefore, in order to eliminate the inclination of this roller with respect to uneven load, it is necessary to have a firm support metal fitting that supports both ends of the roller shaft, and slide this support metal inside the guide recess provided on the outer periphery of the collar. It had to be fitted and placed so that it would move.

Further, in addition to the roller, a supporting metal member was required, fitting and assembling of the shaft portions of the both were also required, and the supporting strength of the thin shaft supporting the roller had to be sufficient.

In addition, when the pressure locking body is composed of rollers,
It is necessary to widen the width of the rollers, the distance between the side panels is widened, and the entire width of the pressure locking device is increased.

In the present invention, the pressure locking body is not a roller,
Since the engaging portion is composed of the ball 2, the ball side panel
Since the width between 3 and 3 can be made short and the space between the balls 2 and 2 can be made narrow, it is possible to hold a narrow paper tube.

In addition, there is no need for a support fitting that is placed inside the guide recess and slides in the outer peripheral direction.

In addition, it was possible to eliminate the portion of the small diameter shaft that supports between the support fitting and the roller.

Second, the guide recess 1a in which the ball 2 is provided in the collar 1
With the guide grooves 3a, 3a provided in the ball side panels 3,3, it is possible to hold the ball side panel 3,3a in a state where it does not fall. I was able to do it.

Thirdly, since the semicircular groove 1c is formed on the bottom surface of the guide recess 1a, the bottom surface of the guide recess 1a is not scraped at any position by the rotation of the ball 2, and the ball 2 is constantly fixed. It was possible to move it in position.

Fourthly, since the paper tube 7 can be restrained by several balls 2,
When the paper tube is inserted, the locking plate piece does not bite into the inside of the paper tube 7 as in the technology described in Japanese Patent Publication No. 40954/1992, and the scraped state is eliminated, and damage to the paper tube and shavings It was possible to eliminate the occurrence.

Fifthly, the ball 2 is configured to be held by the guide recess 1a and the guide groove 3a provided between the collar 1 and the several plates of the ball side surface plate 3,3, and these are assembled and integrated by the screw 9. Guide groove 3a for holding the ball 2 and guide recess 1a
The assembly of was simple and the ball 2 could be held so as not to fall.

Further, unlike the conventional case, it is no longer necessary to perform a high-level processing of processing a trapezoidal guide recess.

Sixthly, if the paper tube 7 is overloaded and the rotation of the paper tube 7 is braked, or conversely, the paper tube 7 side is forcibly rotated when the take-up shaft 6 is not rotating, the ball Side panel 3,
A sliding state occurs between the friction plate 3 and the friction plates 4, 4 and the rotational force can be released without damaging the ball 2 or the collar 1.

Seventh, since the balls 2 are arranged at the apex positions of the odd polygons of 5 or more, the distance between the balls can be narrowed when the diameter of the paper tube 7 is large, and the number of restraint points increases. By shortening the time until tightening, each ball has a higher rate of being securely restrained without being in a floating state.

[Brief description of drawings]

1 is a perspective view showing a part of the winding device of the present invention taken out, FIG. 2 is a partial front sectional view of the same, FIG. 3 is a sectional view taken along the line AA in FIG. 2, and FIG. Color front view and partial side sectional view, FIG. 5 is a ball side surface front view and side sectional view, FIG. 6 is a rotary disk front view and side sectional view, FIG. 7 is a friction disk front view and side sectional view, FIG. 8 is a side sectional view of a conventional winding device and a view taken in the direction of arrow C. 1 …… Color 1a …… Guide recess 2 …… Ball 3 …… Ball side plate 3a …… Guide groove 4 …… Friction plate 5 …… Rotating plate 6 …… Winding shaft 7 …… Paper tube

Claims (2)

[Scope of utility model registration request] 1. A plurality of rotary discs 5, 5 which rotate together with a winding shaft 6 and are slidable in the axial direction, friction discs 4, 4 arranged inside the rotary discs 5, 5, and the friction disc 4. Ball side panel 3, loosely fitted inside 4,
3 and a ball 1 loosely fitted between the ball side plates 3 and 3, and a ball 2 loosely fitted between the ball side plates 3 and 3 on the outer periphery of the collar 1, and each rotary plate 5, 5, A take-up device is constructed by applying lateral pressure to the friction discs 4, 4 and the ball side discs 3, 3 from the axial direction as a whole, so that the outer peripheral surface of the collar 1 is gradually narrowed with respect to the tangent line. Guide recess 1a having an inclined bottom surface
A semicircular groove 1c is formed on the bottom surface of the guide recess 1a, and on the inner surface of the ball side face plate 3,3 facing the guide recess 1a, along the bottom surface of the guide recess 1a. The slanted guide grooves 3a, 3a are bored, and the collar 1 and the ball side surface plates 3, 3 are integrated with each other by screws 9. The guide grooves 3a, 3a and the guide recess 1a
A winding device having a ball 2 movably fitted therein. 2. A winding device, wherein the guide recess 1a, the guide groove 3a and the ball 2 according to claim 1 of the utility model registration are arranged at the apex positions of an odd polygon of 5 or more.