Punching unit and manufacturing apparatus for bag having reclosable tape

Patent metadata

Field	Value
Publication number	US-11148386-B2
Application number	US-201716479504-A
Country	US
Kind code	B2
Filing date	Nov 9, 2017
Priority date	Feb 20, 2017
Publication date	Oct 19, 2021
Grant date	Oct 19, 2021

Abstract

Punched and incised portions can be formed properly, in which it is not necessary to replace an anvil depending on a type of a sheet material. A punching unit 51 comprises: a punching blade 50 for punching a first panel material 11, a second panel material 12, an open tape and a mounting base portion so as to form a punching portion; a incising portion 51 for incising the second panel material 12 and the mounting base portion disposed on the open tape so as to form a incising portion; and an adjusting portion 54 for adjusting a first gap 56 in a punching direction 5Z between edges 50A and 51A of the punching and incising blades 50 and 51.

First claim

What is claimed is:

1. A punching unit for forming a tab on a reclosable-tape-having bag, wherein:
the bag comprises:
a first panel material;
a second panel material superposed on the first panel material, the first and second panel materials being attached together at peripheries thereof;
a reclosable tape disposed between the first and second panel materials, the reclosable tape including male and female fastener portions; and
an open tape disposed between a mounting base portion of the male or female fastener portion and the first panel material so as to rip off the first panel material, and

the punching unit comprises:
a punching blade configured to punch the first panel material, the second panel material, the open tape and the mounting base material so as to form a punched portion;
an incising blade configured to incise the second panel material and the mounting base portion disposed on the open tape so as to form an incised portion; and
an adjusting mechanism configured to adjust a first gap disposed in a punching direction and between edges of the punching and incising blades, wherein:

the adjusting mechanism comprises a bolt configured to press the punching or incising blade to adjust the first gap by rotating the bolt,
the bolt comprises a knob for rotating the bolt, and
the knob comprises a scale for indicating an amount of a rotation of the bolt as an indicator of an amount of adjustment of the first gap made by rotating the bolt with the knob.

2. The punching unit as set forth in claim 1 , wherein the adjusting mechanism comprises a press portion for pressing and abutting the punching or incising blade against the bolt.

3. The punching unit as set forth in claim 1 , wherein the adjusting mechanism is configured to move the incising blade relative to the punching blade.

4. The punching unit as set forth in claim 3 , wherein the adjusting mechanism comprises a rail for sliding the incising blade relative to the punching blade.

5. The punching unit as set forth in claim 4 , wherein the rail is mounted on the punching or incising blade.

6. The punching unit as set forth in claim 1 , wherein:
the punching blade is configured to punch the first panel material, the second panel material, the open tape and the mounting base material so as to form the punched portion while the first and second panel materials are stopped; and
the incising blade is configured to incise the second panel material and the mounting base portion disposed on the open tape so as to form the incised portion while the first and second panel materials are stopped.

7. The punching unit as set forth in claim 6 , further comprising an elastic portion configured to press the second panel material when the punching and incising blades move from a punching position to a standby position.

8. The punching unit as set forth in claim 1 , wherein the punching blade and the incising blade are located on a side of the bag facing the second panel material, the punching unit further comprising an anvil located on an opposite side of the bag facing the first panel material, the anvil including a substantially flat surface facing the first panel material.

9. The punching unit as set forth in claim 1 , further comprising a switching unit located on the adjusting mechanism and configured to switch the bolt between movable and immovable states.

10. The punching unit as set forth in claim 1 , further comprising an adjusting mark located adjacent to the scale on the knob, and configured to facilitate micro adjustments of the bolt by the knob based on positional relations of the scale and the adjusting mark.

11. A manufacturing apparatus for manufacturing a reclosable-tape-having bag, the manufacturing apparatus comprising a tab forming portion, wherein:
the bag comprises:
a first panel material;
a second panel material superposed on the first panel material, the first and second panel materials being attached together at peripheries thereof;
a reclosable tape disposed between the first and second panel materials, the reclosable tape including male and female fastener portions; and
an open tape disposed between a mounting base portion of the male or female fastener portion and the first panel material so as to rip off the first panel material, and

tab forming portion includes a punching unit comprising:
a punching blade configured to punch the first panel material, the second panel material, the open tape and the mounting base material so as to form a punched portion;
an incising blade configured to incise the second panel material and the mounting base portion disposed on the open tape so as to form an incised portion; and
an adjusting mechanism configured to adjust a first gap disposed in a punching direction and between edges of the punching and incising blades, wherein:

the adjusting mechanism comprises a bolt configured to press the punching or incising blade to adjust the first gap by rotating the bolt,
the bolt comprises a knob for rotating the bolt, and
the knob comprises a scale for indicating an amount of a rotation of the bolt as an indicator of an amount of adjustment of the first gap made by rotating the bolt with the knob.

12. The manufacturing apparatus of claim 11 , further comprising a guide portion including a pair of guide rollers configured to receive the first and second panel materials, wherein the first and second panel materials are superimposed with each other by the pair of guide rollers.

13. The manufacturing apparatus of claim 11 , wherein:
the punching blade is configured to punch the first panel material, the second panel material, the open tape and the mounting base material so as to form the punched portion while the first and second panel materials are stopped; and
the incising blade is configured to incise the second panel material and the mounting base portion disposed on the open tape so as to form the incised portion while the first and second panel materials are stopped.

14. The manufacturing apparatus of claim 11 , further comprising an elastic portion configured to press the second panel material when the punching and incising blades move from a punching position to a standby position.

15. The manufacturing apparatus of claim 11 , wherein the punching blade and the incising blade are located on a side of the bag facing the second panel material, the punching unit further comprising an anvil located on an opposite side of the bag facing the first panel material, the anvil including a substantially flat surface facing the first panel material.

16. The manufacturing apparatus of claim 11 , further comprising a switching unit located on the adjusting mechanism and configured to switch the bolt between movable and immovable states.

17. The manufacturing apparatus of claim 11 , further comprising an adjusting mark located adjacent to the scale on the knob, and configured to facilitate micro adjustments of the bolt by the knob based on positional relations of the scale and the adjusting mark.

18. The manufacturing apparatus of claim 11 , wherein the adjusting mechanism is configured to move the incising blade relative to the punching blade.

19. The manufacturing apparatus of claim 18 , wherein the adjusting mechanism comprises a rail for sliding the incising blade relative to the punching blade.

20. The manufacturing apparatus of claim 19 , wherein the rail is mounted on the punching or incising blade.

Assignees

• Totani Corp

Inventors

• Totani Mikio
• Sembo Tomohiko
• MOTODA Takahiro

Classifications

• B26D3/08 Primary

  Making a superficial cut in the surface of the work without removal of material, e.g. scoring, incising · CPC title

• B31B2155/002

  by joining superimposed webs, e.g. with separate bottom webs · CPC title

• B31B70/006 Primary

  Controlling; Regulating; Measuring; Safety measures · CPC title

• B31B70/20

  Cutting sheets or blanks · CPC title

• B26F2001/4481

  having special lateral or edge outlines or special surface shapes, e.g. apertures · CPC title