JP3026239B2 - Winding shaft component - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding shaft component used for winding a sheet, a film or the like around a paper tube (including similar products).

[0002]

2. Description of the Related Art Conventionally, when winding a continuous sheet, film, or the like, a paper tube is fixed to a winding shaft, and the sheet, film, or the like is wound around the outer periphery of the paper tube.

The take-up shaft and the paper tube are fixed by a method in which a taper cone provided on the take-up shaft side is moved from both ends of the paper tube so as to be close to each other. Due to the introduction of air, the lugs are projected from the outer peripheral wall of the winding shaft toward the inner wall of the paper tube, or the outer diameters of a large number of tire-shaped inflatable members mounted on the winding shaft are enlarged to contact the inner wall of the paper tube. It is known how to do this.

[0004]

In the means for fixing the paper tube as described above, the method using a taper cone requires a time-consuming operation for moving the taper cone on the winding shaft. There was a drawback that it was not possible to fix and remove the swiftly.

A take-up shaft having an air shaft structure using compressed air can fix and remove a paper tube by injecting and discharging compressed air, and can solve the drawback of operability of the tapered cone. However, there were the following problems.

That is, in the case of the air shaft, since the compressed air passage and the expansion member are provided integrally with the winding shaft, the structure becomes complicated. In addition, since this air shaft is a winding shaft dedicated to a specific paper tube manufactured according to the diameter and length of the paper tube to be used, there are several types of paper tubes used for winding. In such a case, there was a problem that it was necessary to prepare for each paper core.

[0007] Regarding the change of the size of the paper tube, the diameter is the same,
When the length is changed, one winding shaft (air shaft) may be commonly used, but when the winding shaft is longer than the paper tube, the winding shaft protruding from the paper tube may be used. The shaft had to be protected by a protective means. For example, in a structure in which the tire-shaped inflatable member is expanded, it is necessary to take measures such as fitting a protective sleeve similar to a paper tube in order to prevent the tire-shaped inflatable member from excessively inflating or being damaged by a blade. there were.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and has a simple structure and a winding shaft that can be configured according to the size of a paper tube. It is intended to provide components.

In the winding shaft component according to the present invention which achieves the above object, a cylindrical member is connected to a flange member for fitting and fixing to a drive shaft. An annular expansion member is mounted on the outer periphery, and an air passage communicating from the outer end surfaces of the flange-like member and the tubular member to the inside of the expansion member is provided.

[0010] The cylindrical member has an annular flange having an outer diameter substantially the same as that of the flange-shaped member on the side of the flange-shaped member. The outer diameter may be equal to the outer diameter in the natural state, or may be larger than the outer diameter of the annular inflatable member in the natural state. In some air passages, an injection valve is provided at an opening at the outer end surface of the flange-shaped member.

According to another aspect of the present invention, a cylindrical member is connected to a flange member for fitting and fixing to a drive shaft. An annular inflatable member is mounted on the outer periphery of the cylindrical member, and an air passage communicating from the inner wall of the tubular member to the inside of the annular inflatable member is provided.

[0012]

According to the winding shaft component of the present invention, the conventional air shaft type winding shaft can be formed by fitting the drive shaft and fixing the flange-like member to the drive shaft.

That is, when compressed air is injected into the inside of the annular inflatable member through the air passage, the inflatable member expands, so that the paper tube fitted in the portion can be fixed.

However, since the number of components to be fitted and fixed to the drive shaft can be freely changed, the number of components is appropriately determined in consideration of the torque required for winding, and the winding shaft is mounted. Can be configured. The winding shaft components fitted and fixed to the drive shaft are connected to each other by connecting the air passage openings formed in the outer end surfaces of the flange-like member and the cylindrical member with a connecting pipe, so that the air passages communicate with each other. Can be.

In a winding shaft component having a structure in which an air passage communicating from the inner wall of the tubular member to the inside of the annular inflatable member is provided, the air passage formed in the drive shaft can communicate with the air passage.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show a winding shaft component of a first embodiment, in which a donut-shaped flange member 1 is attached to a cylindrical member 2.
And an annular inflatable member 3 (synthetic rubber tire-like member) is attached to the outside of the tubular member 2. The flange-like member 1 has a groove 4 formed on one side in a radial direction, and is fixed by a fixing bolt 5 installed across the groove 4.
The inner diameter 1a can be reduced.

The cylindrical member 2 has on one side an annular flange 6 having an outer diameter substantially the same as that of the flange member 1 and an inner diameter 2a substantially equal to the inner diameter 1a of the flange member 1. Consisting of
Bolts 8, 8 inserted from the inside of the outer end of the flange-shaped member 1
Is screwed into the tubular member 2 and tightened, so that the flange-like member 1 and the tubular member 2 are connected in the same axis.

To mount the annular inflatable member 3, the spacer ring 9, the annular inflatable member 3, and the fixing ring 10 are sequentially fitted to the tubular portion of the tubular member 2 from the annular flange 6 side.
The bolt 11 inserted from the outer end surface side of the is screwed into the cylindrical body 7,
It is tight. Annular tapered surfaces 12 and 13 are formed on the spacer ring 9 and the fixed ring 10, and the annular tapered surface 1 is provided inside the annular inflatable member 3.
The annular lip 17 of the annular inflatable member 3 is pressed against the outer surface of the tubular portion of the tubular member 2 in accordance with the tightening of the bolt 11 by interposing the seal ring 16 having the seal members 4 and 15, so that the annular inflatable member 3 becomes cylindrical. It is designed to be air-tightly mounted on the member.

The tubular member 2 is provided with air passages 18a and 18b communicating with the inside of the annular inflatable member 3.
These air passages are communicated with a through hole 19 formed in the fixing ring 10 and a through hole 20 formed in the flange-like member 1. A closing bolt 21 is screwed into the through hole 19. The injection valve 2 is provided in the through hole 20.
2 are provided.

FIGS. 3 and 4 show the winding shaft components of the second embodiment. Also in this embodiment, the basic structure is the same as that of the first embodiment, and the same components are denoted by the same reference numerals and description thereof is omitted.

In the case of this embodiment, the annular flange 6 of the cylindrical member 2
And the outer diameter of the flange-shaped member 1 are substantially the same as the outer diameter of the annular inflatable member 3 in the natural state (when not inflated).

FIG. 5 shows a winding shaft component of the third embodiment.

Since the basic structure of this embodiment is the same as that of the first and second embodiments, the same components are denoted by the same reference numerals and description thereof is omitted.

In this embodiment, a through hole 20 formed in the flange-like member 1 has a screw hole 2 into which a closing bolt 21 can be screwed.
There are three.

Next, a winding shaft using the above embodiment will be described. FIG. 6 shows the first embodiment (FIGS. 1 and 2) and the second embodiment.
The winding shaft component of the embodiment (FIGS. 3 and 4) forms a winding shaft for the paper tube 24.

That is, the winding shaft component parts A and B are fitted to the drive shaft 25, and the inner diameter 1a is reduced and fixed by tightening the fixing bolts 5 of each flange-like member 1. . The interval between the winding shaft components A and B is the paper core 2
4 are set corresponding to the length. The blocking bolts 21 screwed into the through holes 19, 19 of the fixing rings 10, 10 facing each other are removed, the connection tube 26 is connected, and the respective air passages 18a, 18b are communicated.

With respect to the winding shaft thus configured, the second
When the paper tube 24 is fitted from the take-up shaft component B side of the embodiment, one end surface of the paper tube 24 hits the annular flange 6 of the take-up shaft component A of the first embodiment and is set in position. . Then, when compressed air is injected through the injection valve 22 provided in the through hole 20 of the flange-shaped member 1 of one of the winding shaft components, the annular expansion members 3 and 3 of each winding shaft component expand, and As a result of increasing the diameter, the paper tube 24 is fixed to the winding shaft.

However, when the drive shaft 25 rotates, the paper tube 24 is rotated.
Can also be rotated to wind up a sheet, a film or the like on the outer periphery of the paper tube 24. When the winding has been completed, the injection valve 22 provided on one of the winding shaft components is operated to release the compressed air injected into the annular expansion members 3, 3. Since the sheet is reduced and restored to the natural state, the paper tube 24 on which the sheet, the film and the like have been wound can be pulled out from the winding shaft component B side of the second embodiment.

FIG. 7 shows a drive shaft 25 mounted in a cantilever manner.
Is a winding shaft constituted by attaching the winding shaft component A of the first embodiment to an end of the winding shaft.

FIG. 8 shows a driving shaft 25 in which the winding shaft component A of the first embodiment, the winding shaft component C of the third embodiment, and the winding shaft component B of the second embodiment are sequentially arranged. This is a winding shaft configured to be fitted and fixed. Connecting tube 2 between each component
6 is not shown.

As described above, by using the winding shaft components of each embodiment, it is possible to configure a winding shaft that can be adjusted to the length of the paper tube and can secure a necessary torque. The drive shaft 25 has a cantilever type and a both-ends support type. In any of the types, a winding shaft can be configured as shown in the drawing.

When the operation of loading and unloading the paper tube 24 and injecting and discharging compressed air is automated, the compressed air is supplied to the drive shaft 2.
Often, it is made to inject and exhaust through 4.

The winding shaft component of the fourth embodiment shown in FIG. 9 is suitable for such a case.

In the case of this embodiment, a recess 27 is formed in the center of the outer end surface of the flange-shaped member 1 so as to be fitted with the drive shaft 25. A through hole 28 is further formed in the center of the flange-shaped member 1 and communicates with the inner diameter side of the tubular member 2. On the outer end surface of the tubular member 2, the fixing ring 10 serves as a blind cover 29, and a through hole 30 is formed in the center of the blind cover 29. The connecting bolt 31 inserted through the through hole 30 is
4 by screwing the winding shaft component to the drive shaft 2.
4 to form a winding shaft.

The compressed air introduction passage 3 formed in the drive shaft 24
2 and the inside of the annular inflatable member 3 can communicate with each other through an air passage 33 formed in the shaft of the connecting bolt 31 and an air passage formed in the diameter direction from the inner wall to the outer wall of the tubular member 2. In the figure, 34 and 35 are seal rings, 36
Is a detent pin.

In the case of the winding shaft constructed as described above, similar winding shafts are installed facing each other at predetermined intervals, and one or both of them can be moved together with the drive shaft 24 in the direction of arrow 37. Thereby, it is possible to cope with automation of the winding process.

In the above embodiment, the case where the annular inflatable member 3 mounted on the outer periphery of the cylindrical member 2 is a single tire-shaped member has been described, but a plurality of tire-shaped members are arranged in parallel. By increasing the contact area with the paper tube 24, it is possible to cope with an increase in torque.

[0039]

As described above, according to the winding shaft component of the present invention, the structure can be simplified and the required winding shaft can be formed on the drive shaft according to the size of the paper tube. There is an effect that can be done.

Further, the mounting and dismounting of the paper tube need only be performed by injecting and discharging compressed air to and from the annular inflatable member, so that a winding shaft having good workability can be formed.

[Brief description of the drawings]

FIG. 1 is a sectional view of a first embodiment of the present invention.

FIG. 2 is a side view of the first embodiment.

FIG. 3 is a sectional view of a second embodiment of the present invention.

FIG. 4 is a side view of the second embodiment.

FIG. 5 is a sectional view of a third embodiment of the present invention.

FIG. 6 is a front view of a winding shaft using the embodiment of the present invention.

FIG. 7 is a perspective view of another winding shaft using the same embodiment.

FIG. 8 is a perspective view of another winding shaft using the same embodiment.

FIG. 9 is a partially cutaway front view of a fourth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Flange-like member 2 Cylindrical member 3 Annular inflatable member 6 Annular flange 7 Cylindrical body 9 Spacer ring 10 Fixing ring 18a, 18b Air passage 19, 20 Through hole 21 Closing bolt 22 Injection valve 24 Paper tube 25 Drive shaft 26 Connecting tube 27 recess 28 through hole 29 blind lid 30 through hole 31 connecting bolt 32 compressed air introduction path 33 air path

Claims (1)

(57) [Claims] 1. A furan for fitting to and fixing to a drive shaft.
To the flange-like member, the flange-like portion to the flange-like member side.
A cylindrical member having an annular flange having substantially the same outer diameter as the material
And an annular inflatable member on the outer periphery of the cylindrical member,
The outer diameter of the annular flange and the flange-shaped member
The outer diameter is the same as the outer diameter, or the outer diameter in a natural state is the annular flange.
And an annular expansion member smaller than the outer diameter of the flange-like member is mounted.
And the flanged member and the cylindrical member
An air passage communicating from the outer end surface to the inside of the annular inflatable member.
A winding shaft component characterized by having a path.