JPH0217686Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

The present invention relates to a key groove correction device for a core base, which corrects the key groove portion provided on the inner circumferential side of the base of a core that serves as a core when winding a strip of paper into a roll.

[Prior Art] Conventionally, a paper tube called a core, which has reinforcing caps on both ends, has been used as a core for winding various strip-shaped papers such as newsprint, and this core is reused. has been collected. However, core 1 collected from paper users contains
In some cases, the outer circumferential surface of the cap 2 protrudes from the outer periphery of the paper tube 3 as shown in FIG. 4 due to deformation of the cap 2 during paper unwinding or shrinkage of the paper tube 3 due to drying. As shown in FIG. 5, the current method of installing a core 1 between a group of rolls 10 and wrapping paper 11 around it could damage the rolls 10, so it could not be used as is. So the 6th
As shown in the figure, the outer peripheral surface of the paper tube 3 is 0.5 to 0.5 to The cap 2 was modified so that it protruded by 1.0mm.

[Problem that the invention attempts to solve]

However, when trying to correct the entire circumference of the cap using the outer diameter seamer, the keyway 2 is located on the inner circumference of the cap 2.
In the part where a is provided, the inside of the cap 2 is a space with the keyway 2a, so the cap 2 is easily deformed inward by the pressing force of the press roll 12, so the outer circumferential surface of the cap 2 is the outer circumferential surface of the paper tube 3. When the key is pulled in more than necessary, a step is created, and as a result, the key cannot be inserted into the keyway 2a of the base 2, and when the paper 11 is wound around the core 1, this step causes wrinkles in the paper 11. There was a problem that the mold was attached and the product value was significantly reduced.

[Means to solve the problem]

Therefore, the present inventor re-corrected only the part of the keyway 2a provided on the inner circumferential side of the cap 2 of the core 1, which had been deformed inward more than necessary by the cap outer diameter seamer, and changed the cap 2 of the core 1. They developed a device that can create the desired shape. In other words, the present invention has a presser fitting mounting piece that is longer than the diameter of the base of the core and protrudes upward from the base, and a curvature that is fixed to the base of the presser fitting mounting piece and is equal to the outer radius of the base. A cap outer circumferential surface holder having a concave cap support surface with a radius, and a presser metal fitting having approximately the same shape as the key groove of the cap are fixed downward at a position facing the cap outer circumferential surface receiver, and the base of the presser metal fitting mounting piece. The presser metal fitting is rotatably supported in the vertical direction on the lower shaft support, and the lower end of the presser metal fitting is rotatably supported on the opposite end across the lower shaft support from the side where the presser metal is fixed. The attached connecting member is rotatably supported vertically on the presser fitting mounting piece above the core on which the mouthpiece is placed on the outer peripheral surface of the mouthpiece, and one end of the connecting member A core cap comprising a presser arm which is rotatably attached to the upper end and has a handle on the side attached to the connecting member and the opposite end across the upper shaft support. A keyway portion corrector is provided.

【Example】

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The keyway portion corrector for a core cap according to the present invention will be further described below based on embodiments shown in the drawings. Fig. 1 is an external perspective view of one embodiment of a keyway correction device for a core cap according to the present invention, and Fig. 2 shows the keyway of a core cap being corrected using the embodiment shown in Fig. 1. FIG. 3 is a sectional view taken along the line X--X in FIG. 2, showing the state of the main parts. In the drawings, reference numeral 1 denotes a core made of a paper tube 3 having reinforcing caps 2 at both ends, and a keyway 2a is provided on the inner circumferential side of the cap 2 of the core 1. Reference numeral 4 denotes a presser fitting mounting piece that projects upward from the base 5 and is longer than the diameter of the base 2 of the core 1, as shown in FIG. A base outer circumferential surface support having a concave base support surface 6a having a radius of curvature equal to the outer radius of the cage base 2, and a presser foot 7 having approximately the same shape as the keyway 2a of the base 2 at a position facing the base outer circumferential surface support 6. Ingredient 7
A is a presser metal fitting which is fixed downward and pivoted by a lower shaft support 7b so as to be freely rotatable in the vertical direction at the root of the presser metal fitting mounting piece 4, and 8 is a presser metal fitting 7a of the presser metal fitting 7 is fixed. A connecting member 9 has a lower end rotatably attached to the opposite end of the side and the lower shaft support 7b, and reference numeral 9 designates the base 2 on the base outer peripheral surface support 6.
The upper part of the core 1 on which the core 1 is placed is rotatably supported by the upper shaft support 9b in the vertical direction on the presser fitting mounting piece 4, and one end is rotatably attached to the upper end of the connecting member 8. There is a handle 9 on the side where it is attached to the handle 9 and the opposite end across the upper shaft support 9b.
a is the presser arm provided with the presser arm.

[Effect]

To re-correct the portion of the keyway portion 2a provided in the cap 2 which has been corrected by the cap outer diameter seamer and has been deformed inwardly more than necessary by using the core cap keyway portion correction device according to the present invention having the structure as described above. Grasp the handle 9a and lift the presser arm 9 around the upper shaft support 9b, and then move the presser metal fitting 7, which is connected to the presser arm 9 by the connecting member 8, to the lower shaft support 7b.
Rotate around the center and lift the presser 7a from the cap support surface 6a of the cap outer peripheral surface receiver 6,
After placing the outer circumferential surface of the inner circumference of the core 1 of the base 2 at the portion where the keyway 2a is provided on the base outer circumferential surface receiver 6, hold the presser arm 9 by the handle 9a and push down the connecting member 8. As shown in FIGS. 2 and 3, it is only necessary to insert and press the presser fitting 7a provided on the presser fitting 7 interlocked with the presser fitting 7 into the keyway 2a of the base 2 using a lever principle, and the above operation can be completed. By doing so, the entire outer peripheral surface of the paper tube 3 can be made to protrude 0.5 to 1.0 mm from the outer peripheral surface of the cap 2, respectively.

【effect】

As explained above, the keyway correction device for a core cap according to the present invention has a simple structure and is easy to manufacture, and it can be used to correct the keyway of a core cap that has been deformed more than necessary due to correction using a cap outer diameter seamer. It is now possible to re-correct parts with very simple work, and it is possible to avoid problems such as not being able to insert the key into the keyway, or wrinkles or molding on the paper when wrapping the paper around the core. It is possible to prevent significant loss of value and to reuse the core, which has great practical value.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of one embodiment of a keyway correction device for a core cap according to the present invention, and Fig. 2 shows the keyway of a core cap being corrected using the embodiment shown in Fig. 1. A sectional view of the main parts showing the condition, Figure 3 is the second
A sectional view taken along the line X-X in the figure, FIG. 4 is a sectional view of the main part of the core showing a state in which the outer circumferential surface of the mouthpiece protrudes from the outer circumferential surface of the paper tube, and FIG. 5 is a core when winding paper around the core. Explanatory diagram showing the relationship between rolls and paper, No. 6
The figure is an explanatory view showing the relationship between the core and the press roll of the mouthpiece outer diameter seamer. 1... Core, 2... Base, 2a... Keyway, 3
... Paper tube, 4 ... Holder fitting mounting piece, 5 ... Stand, 6
...Cap outer peripheral surface support, 6a...Cap support surface, 7...
...Presser metal fitting, 7a...Presser fitting, 7b...Lower shaft support, 8...Connecting metal fitting, 9...Presser arm, 9a...
...Handle, 9b...Upper shaft support, 10...Roll,
11... Paper, 12, 12'... Press roll.

Claims (1)

[Scope of utility model registration request] A presser fitting mounting piece 4 that is longer than the diameter of the base 2 of the core 1 and protrudes upward from the base 5;
A cap outer peripheral surface support 6 having a concave cap support surface 6a having a radius of curvature equal to the outer radius of the cap, and a key groove 2a of the cap 2 at a position facing the cap outer peripheral surface support 6.
A presser metal fitting 7a having substantially the same shape as the presser metal fitting 7a is fixed downward and is rotatably supported vertically at the base of the presser metal fitting piece 4 by a lower shaft support 7b, and a presser metal fitting 7 of the presser metal fitting 7. The cap 2 is placed on a connecting member 8 whose lower end is rotatably attached to the opposite end of the side to which the tool 7a is fixed and the lower shaft support 7b, and on the cap outer peripheral surface support 6. Above the core 1, it is rotatably supported vertically on the presser fitting mounting piece 4 by an upper shaft support 9b, and one end is rotatably attached to the upper end of the connecting member 8. A keyway portion correction device for a core mouthpiece characterized in that it comprises a presser arm 9 having a handle 9a at an end opposite to the side where the upper shaft support 9b is sandwiched.