JPH0540244U - Core positioning device - Google Patents

Abstract

(57) [Abstract] [Purpose] The first purpose is to enable accurate positioning in a short time even if the winding diameter of the sheet-shaped product increases.
Moreover, it is possible to easily deal with a change in sheet width. The second purpose is that the positioning operation of the core can be performed very easily. [Structure] Positioning members 10 to 12 for determining a tightening position of a core 50 inserted in a winding shaft 20 are attached to a rod body 7, and the rod body 7 is attached to a machine frame 1 so as to move toward and away from the winding shaft 20. The distance holding members 8 and 9 mounted on the rod 7 determine the distance between the positioning members 10 to 12 and the winding shaft 20.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a positioning device for a core of a winding shaft, such as a slitter, which cuts a wide sheet into a plurality of narrow sheets and winds the sheet.

Generally, when a wide sheet-like material such as a synthetic resin film, paper or aluminum foil is cut into a plurality of narrow sheet-like materials and wound up, it is disclosed in, for example, Japanese Patent Laid-Open No. 61-18662. As described, a slitter is used in which a winding device for winding a sheet material cut into a predetermined narrow width is installed with a touch roller for applying a surface pressure sandwiched between them. In such a winding device, for example, as described in JP-A-61-18662, a winding shaft for tightening a plurality of cores on one shaft is installed. When tightening an empty core on the winding shaft, a mark indicating the end face position of each core is marked on the peripheral surface of the winding shaft with magic ink etc., and the operator visually aligns the end face of the core with the mark. ing. With such a method, the alignment operation takes a long time, and even if the alignment operation is carefully performed, an error of about 1 mm occurs. In addition, it is necessary to clearly indicate a mark indicating a new position so that it will not be mistaken each time the sheet width changes. Furthermore, there was a problem that the positioning mark disappeared after the core was attached and detached several times.

Therefore, it has been attempted to install a positioning mechanism as shown in FIGS. 4 and 5. The structure of this positioning mechanism will be described. A rod 21 is rotatably installed parallel to the winding shaft 20, and a positioning member 22 is attached to the rod 21 so as to be movable in the longitudinal direction of the axial center. The core 50 is supplied to the winding shaft 20 in a state in which the core 50 is separated from the winding shaft 20, and the cores 50 are respectively inserted close to the positioning. Next, the rod 21 is rotated by a fluid cylinder (not shown) or the like to bring the positioning member 22 into contact with the peripheral surface of the winding shaft 20. In this state, each core 50 is brought into contact with the positioning member 22 for positioning, and a tightening mechanism (not shown) is operated to tighten each core 50 integrally with the winding shaft 20. In such a positioning mechanism, when the winding diameter of the sheet-shaped product becomes large, the positioning member 22 becomes long and is deformed unless it has a rigid shape, so that there is a problem that the positioning accuracy deteriorates.

[0004]

[Problems to be solved by the device]

 The first problem is that the alignment operation takes a long time, and errors occur even if careful alignment operation is performed, and a mark indicating a new position is specified so that it will not be mistaken each time the sheet width changes. It is necessary to do this, and the positioning mark will disappear if the core is attached and removed several times.

The second problem is that the positioning accuracy deteriorates as the winding diameter of the sheet material increases.

[0006]

[Means for Solving the Problems]

 In order to solve the first problem and the second problem, the core positioning device of the present invention comprises a positioning member for determining a tightening position of the core inserted into the winding shaft, which is attached to the rod, The rod is mounted on the machine frame so as to move closer to and away from the winding shaft, and the distance holding member determines the distance between the positioning member and the winding shaft.

[0007]

【Example】

 FIG. 1 is a schematic front view showing one embodiment of a core positioning device of the present invention, and FIG. 2 is a view taken in the direction of arrows ZZ in FIG. They are installed at intervals. Reference numeral 2 is a shaft, which is rotatably mounted on the machine frame 1 by means of bearings 3 and 4. Reference numerals 5 and 6 denote arms, which are integrally attached to the shaft body 2 so as to be close to the bearings 3 and 4. Reference numeral 7 is a rod, which is mounted in parallel with the shaft body 2 by arms 5 and 6 in a both-supported state. Numerals 8 and 9 are spacing members, which are attached to the rod 7 so as to be close to the arms 5 and 6. Numerals 10 to 12 are positioning members, which are movably mounted on the same number of rods 7 as the cores 50 tightened on the winding shaft 20, and are fixed at predetermined positions by a screw body.

The shapes of the spacing members 8 and 9 and the positioning members 10 to 12 described above are not particularly limited, but if they are cylindrical parts, the cutting and assembling operations are easy and the dimensions are uniform. it can.

Further, instead of the spacing members 8 and 9 described above, a spacing member 18 having a structure in which a stopper screw body 18b is screwed to a bracket 18a as shown in FIG. 3 is used. It is also possible to attach the member 18 to the side surface of the machine frame (not shown) and bring the arm 5 to which the rod 7 is attached into contact with the stopper screw body 18b to determine the interval dimension. The spacing member 18 is preferably installed corresponding to the arms 5 and 6, respectively.

Reference numeral 13 denotes a drive device such as an electric motor or a rotary actuator, which is attached to the machine frame 1 by a bracket 14. Reference numeral 15 denotes a driving toothed pulley, which is attached to the output shaft of the driving device 13. Reference numeral 16 denotes a driven toothed pulley, which is attached to the shaft body 2. Reference numeral 17 denotes a toothed belt which is stretched around toothed pulleys 15 and 16. Instead of the drive mechanism such as the drive device 13 and the toothed pulleys 15 and 16, the shaft body 2 can be rotated by a fluid cylinder.

When the above-mentioned drive device 13 operates to rotate the output shaft, the shaft body 2 is rotated by the toothed pulleys 15, 16 and together with the rod body 7, the spacing members 8, 9 and the positioning members 11-12. Moves from the standby position (a) to the positioning operation position (b). In this state, the operator moves the core 50 previously inserted into the winding shaft 20 to bring the core 50 into contact with the corresponding positioning members 10 to 12 for positioning.

The spacing members 8 and 9 and the positioning members 10 to 12 described above have a spacing dimension (S) between the outer circumference of the winding shaft 20 and the inner circumference of the core 50 when the core 50 is not tightened as shown in FIG. ) And the engaging dimension (R) when the core 50 abuts the positioning members 10 to 12 so that (S)> (R), and the core 50 moves beyond the positioning member 6. It is necessary to determine a dimension that allows movement in the longitudinal direction of the axis.

In the core positioning device of the present invention, the positioning members 10 to 12 for determining the tightening position of the core 50 inserted into the winding shaft 20 are mounted on the rod 7, and the shaft 2 is driven by the driving device 13. By rotating the rod 7, the spacing members 8 and 9 and the positioning members 10 to 12 are moved closer to and away from the winding shaft 20, and at the same time, the spacing between the positioning members 10 to 12 and the winding shaft 20 is set on the rod 7. Arms 5 to which the rod body 7 is attached by attaching the interval holding members 8 and 9 for determining or by attaching the interval holding member 18 in which the stopper screw body 18b is screwed to the bracket 18a to the side surface of the machine frame. Since it comes into contact with the screw body 18b for the stopper, the positioning time can be shortened, and even if the sheet width changes, it can be easily dealt with. Positioning can be performed accurately even if the diameter becomes large.

In addition, in a state where the core 50 is not tightened, the space dimension (S) between the outer circumference of the winding shaft 20 and the inner circumference of the core 50 and the engagement dimension when the core 50 abuts the positioning members 10-12. When the relationship of (R) is such that (S)> (R), the core 50 can move in the longitudinal direction of the axial center beyond the positioning members 10 to 12, and the positioning operation of the core 50 is easy.

[0015]

[Effect of the device]

 In the core positioning device of the present invention, a positioning member for determining the tightening position of the core inserted into the winding shaft is attached to the rod body, and the rod body is attached to the machine frame so as to approach and separate from the winding shaft. Since the distance between the positioning member and the winding shaft is determined by the distance holding member, even if the winding diameter of the sheet-shaped product becomes large, the positioning can be performed accurately in a short time. Even if the width changes, it can be easily dealt with.

According to a second aspect of the present invention, the spacing member is formed of a cylindrical part and is attached to the rod, or the spacing member is screwed to the bracket as in the third aspect. With the above configuration and mounting on the machine frame, the positioning operation can be performed reliably.

[Brief description of drawings]

FIG. 1 is a schematic front view showing an embodiment of a core positioning device of the present invention.

FIG. 2 is a view taken along arrow ZZ in FIG.

FIG. 3 is a schematic view showing another embodiment of the spacing member of the present invention.

FIG. 4 is a schematic front view showing an embodiment of a conventional core positioning device.

FIG. 5 is a view taken along the line YY in FIG.

[Explanation of symbols]

 1 Machine Frame 2 Shaft Body 3, 4 Bearings 5, 6 Arms 7 Rods 8, 9, 18 Interval Holding Member 10, 11, 12 Positioning Member 13 Drive Device 15, 16 Toothed Pulley 17 Toothed Belt 18a Bracket 18b Stopper Screw body

Claims (3)

[Scope of utility model registration request] 1. A positioning member for determining a tightening position of a core inserted in a winding shaft is attached to a rod, and the rod is attached to a machine frame so as to move toward and away from the winding shaft, and a positioning member is provided by a spacing member. A core positioning device, characterized in that it is configured so as to determine the distance between the winding shaft and the winding shaft. 2. The core positioning device according to claim 1, wherein the spacing member is formed of a cylindrical part and is attached to the rod. 3. The core positioning device according to claim 1, wherein the spacing member has a structure in which a stopper screw body is screwed to a bracket and is mounted on a machine frame.