JPH03186547A - Paper tube holding device - Google Patents

Abstract

PURPOSE:To obviate need of heavy labor for installing a paper tube, demounting a rolled article and lifting up the rolled article by internally fitting a extending plate in a shiftable manner in the radial direction of a sleeve, and installing a leg which projects to the inside of the sleeve towards a cam. CONSTITUTION:A sleeve 30 is installed in turnable manner around the upper part 21 of a shaft 20, and three longitudinal grooves which divide the outer peripheral surface into three parts in the longitudinal direction of the outer peripheral surface are formed, and the upper and lower through holes 34 and 34 are formed on the bottom 33 of each longitudinal groove. Further, each extending plate 40 is internally fitted in shiftable manner in the radial direction of the sleeve 30 in each longitudinal groove of the sleeve 30, and the upper and lower legs 41 and 41 which pass through the upper and lower through holes 34 and 34 and project to the inside of the sleeve 30 towards the upper and lower cams 22 and 22 are installed. The upper and lower legs 14 and 14 are inserted from above into a paper tube 17 which is prepared on the machine board 16 of a taking-up machine, and connected with a taking-up shaft 10 by a shaft coupling 24, and the paper tube 17 is held by revolving the upper and lower legs 14 and 14 together with the taking-up shaft 10.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a paper tube holder used for mounting a paper tube on a winding shaft of a winding machine.

Prior Art and Problems to be Solved by the Invention Conventionally, as a means for attaching a paper tube to the winding shaft of a winding machine, a holding cylinder fitted externally to the winding shaft of the winding machine is provided, and the inside of the holding cylinder is attached to the winding shaft of the winding machine. A cam mechanism, air expansion bag means, etc. are provided in the cam mechanism, and a worker operates the cam, air expansion bag means, etc. to push out the holding tube, thereby rotating the paper tube attached over the holding tube. method was adopted.

However, in the conventional method, the paper tube is attached to the holding tube by pushing the holding tube apart, and the desired scroll rolled up around the paper tube is removed from the holding tube together with the paper tube. There is also a problem in that, if the rolled up scroll is heavy, lifting the scroll and removing it from the holding tube becomes extremely labor intensive.

The present invention involves the work of attaching a paper tube to the winding shaft of a winding machine;
Not only does it not require the work of removing the rolled up material from the winding shaft of the winding machine, but also it is possible to lift the rolled material on the upper surface of the winding machine when removing the rolled material from the winding shaft. The purpose of the present invention is to provide a paper tube holder that does not require any labor at all.

Means for Solving the Problems In order to achieve the above object, the paper tube holder of the present invention includes a shaft 20, a sleeve 3o, three overhanging plates 40, 40,
40, and the shaft 20 has, in its upper portion 21,
Upper and lower cams 22.22 each having an equilateral triangular cross-sectional shape with rounded apexes and sides are provided, and a shaft coupling 11.24 is provided in the lower portion 23 of the cams 22.22. Upper part 2 of shaft 20! is rotatably attached around the outer circumferential surface 31, and is provided with three longitudinal grooves 32.32.3, 2 that vertically divides the outer circumferential surface 31 into three equal parts, and at the bottom 33 of each longitudinal groove 32. Upper and lower through-holes 34, 34 are provided, and each overhang plate 40 is movably fitted within a respective longitudinal groove 32 of sleeve 30 in the radial direction of sleeve 30 and has upper and lower through-holes 34, 34, respectively. upper and lower 1141% 41 projecting inside the sleeve 30 towards the upper and lower cams 22.22 through through holes 34.34.

The sleeve 30 also has a cap 50 at its upper end that is rotatably fitted around the distal end portion 25 of the shaft 20.
is fixedly attached to the shaft 20, and a collar 60 is fixedly attached to the boundary between the upper portion 21 and the lower portion 23 of the shaft 20, and the sleeve 30 is fixedly attached to the upper portion of the shaft 20 by the cap 50 and the collar 60. Preferably, it is rotatably mounted around 21.

For production First, the paper tube holder configured as described above is as follows.

Since a shaft coupling 24 is provided on the lower portion 23 of the shaft 20, when it is inserted from above into the paper tube 17 mounted on the winding machine stand 16, the shaft coupling 24 is connected to the winding machine. axis 10
It acts to connect to the shaft joint 14 of.

Next, when operating the winder, the upper portion 2 of the shaft 20
1 is provided with upper and lower cams 22.22, and the sleeve 30 is rotatably provided around the upper portion 21 of the shaft 20, so that the upper and lower cams 22.22 are more stable than the sleeve 30. The cam 22.2 acts to rotate first and also from the upper and lower through holes 34.34 of the sleeve 30.
The upper and lower parts 9141.41 of each overhanging plate 40 protruding inside the sleeve 30 toward 2 are pushed outward, i.e., the 2 each overhanging plate 40 is spread out inside the paper tube 17. The paper tube 17 is held by the three overhanging plates 40, 40° 40.

Further, since the cross section of the cam 22 is an equilateral triangle with rounded corners and rounded sides, the cam 22 immediately rotates when the rotating shaft 10 rotates, regardless of the direction of rotation of the take-up shaft 10. It serves to hold the tube 17.

Further, the sleeve 30 has a cap 50 fixedly attached thereon 1vi35 that rotatably fits over the distal end portion 25 of the shaft 20;
Since the collar 60 is fixedly attached to the boundary between the upper part 21 and the lower part 23, when the dimensions of the paper tube are changed, the shaft 20 can be left as it is, and the sleeve 30 and the cab It works so that the collar 60 can be replaced.

Example Examples will be described with reference to the drawings.

First, in FIG. 1, 10 indicates the winding shaft of the winding machine.
The winding shaft 10 is provided with a vertical hole 13 extending from an upper end 11 along a center line 12 and a diametrical horizontal groove 14. Horizontal groove 1
The lower end 15 of 4 is enlarged in the shape of an arc with a diameter larger than the width of the transverse groove 14. Further, 16 indicates the upper surface of the winding machine, 17 indicates the paper tube, 6 the winding shaft 10 indicates the upper surface 1
It is located below 6.

The paper tube holder includes a shaft 20, a sleeve 30, a projecting plate 40, a cap 50, and a collar 60.

The shaft 20 is provided with upper and lower cams 22 and 22, each having an equilateral triangular cross-sectional shape with each vertex and each side rounded, in the upper part 21, and the shaft 2 in the lower part 23.
A diametrically oriented bottle (shaft joint) 24 is provided. The diameters of the lower part 23 and the bottle 24 are such that they can be inserted into the vertical hole 13 and the transverse groove 14, respectively.

As shown in FIG. 2, the sleeve 30 has three longitudinal grooves 32, 32, 32 located around the upper portion 21 of the shaft 20 and vertically dividing the outer circumferential surface 31 into three equal parts. and upper and lower through holes 34.3 are provided in the bottom 33 of each longitudinal groove 32.
There are 4.

The overhang plate 40 is provided with a sleeve 3 in each longitudinal groove 32 of the sleeve 30.
0 radially movably fitting dimensions, and
Upper and lower legs 41.41 are sized to project inside the sleeve 30 through upper and lower through holes 34.34. Further, upper and lower inclined surfaces 44 and 44 are provided near the upper end 42 and the lower end 43.

Further, as shown in FIG. 3, the overhang plate 40 has a lower end 43
A recess 47 is provided near the recess 47, and a leaf spring 48 is installed in the recess 47. The leaf spring 48 has an overhanging plate 40 that is connected to the cam 22.
This has the effect of causing the overhanging plate 40 to tilt upward when it is not pushed by.

The cap 50 is rotatably fitted around the distal end portion 25 of the shaft 20 and is fixedly attached to the upper end 35 of the sleeve 30 by a plurality of setscrews 52. Also,
Three recesses 51, 51, 51 are provided in which the upper end 42 of each flange 40 engages in a radially movable manner.

The collar 60 is fixedly attached to the boundary between the upper portion 21 and the lower portion 23 of the shaft 20 by a set screw 61. Also, color 60.

An annular groove 61 is provided on the upper side for engaging the end 43 of each projecting plate 40 so as to be movable in the radial direction and rotatably around the shaft 20.

Effects of the Invention Since the present invention is configured as described above, it produces the effects described below.

First, in the present invention, the work of attaching the paper tube to the winding shaft is completed by simply inserting the paper tube holder into the paper core from above. The process of attaching the rolled up scroll to the paper tube by covering the paper tube over the holding tube and expanding the holding tube, and then separating the paper tube from the holding tube by shrinking the expanded holding tube. There is no need to remove the tube from the holding cylinder at all, and one working time is greatly shortened.

Second, when removing the tapered roll from the winding shaft of the winder, the paper tube holder of the present invention can be taken out from above, so the roll can be lifted onto the stand of the winder. There is no longer any need for such work, especially when the scrolls are heavy.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal cross-sectional view showing the paper tube connected to the winding shaft of a winding machine and held, and FIG. FIG. 3, a cross-sectional view taken along line A, is a cross-sectional view corresponding to FIG. 2, showing the state when the paper tube is separated from the paper tube. 10 ... Winding shaft 16 ... Upper surface of winding machine 17 ... Paper tube 20 ... Shaft 1 22 3 4 5 0 1 2 3 4 5 0 1 0 0 Upper part upper and lower cam lower part shaft joint (Bin) Tip part Sleeve Outer circumferential surface Vertical groove Bottom Through hole at top and bottom Upper end Overhang plate Upper and lower leg cap collar

Claims (1)

[Claims] 1. Shaft 20, sleeve 30, and three overhanging plates 40;
40, 40, the shaft 20 has an upper portion 2
1 is provided with upper and lower cams 22, 22 each having an equilateral triangular cross-sectional shape with rounded apexes and sides, and a shaft coupling 24 is provided in its lower portion 23, and a sleeve 30
is rotatably attached around the upper portion 21 of the shaft 20, and is provided with three longitudinal grooves 32, 32, 32 that vertically divide the outer circumferential surface 31 into three equal parts. Upper and lower through holes 34, 34 are provided in the bottom 33 of the groove 32, and each projecting plate 40 is provided in each vertical groove 3 of the sleeve 30.
2 and projecting inside the sleeve 30 toward the upper and lower cams 22, 22 through the upper and lower through holes 34, 34, respectively. and lower legs 41, 41, which are inserted from above into a paper tube 17 prepared on the stand 16 of the winding machine, connected to the winding shaft 10 by a shaft coupling 24, and then wound. A paper tube holder characterized by holding a paper tube 17 by rotating together with a shaft 10. 2. A cap 50 that the sleeve 30 rotatably fits around the distal end portion 25 of the shaft 20 at its upper end 35;
is fixedly attached to the shaft 20, and a collar 60 is fixedly attached to the boundary between the upper portion 21 and the lower portion 23 of the shaft 20, and the cap 50 and the collar 60 cause the sleeve 30 to be attached to the upper portion 21 of the shaft 20. The paper tube holder according to claim 1, wherein the paper tube holder is rotatably attached around the holder.