JPH11254347A - Staple cutting mechanism of roll staple cartridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a staple cutting mechanism a roll staple cartridge which can cut a roll staple in the cartridge easily and safely at a prescribed position. SOLUTION: This roll staple cartridge is provided with a storage part storing a roll staple 2, and a staple feed passage 4 continuous from an opening part formed at the storage part. On the upper surface side or the lower surface side of the staple feed passage 4, a pressure part 13 and a feed part 14 capable of engaging with the roll staple 2 in the staple feed passage 4 are formed. The feed part 14 is formed so as to be capable of moving the feed part 14 in the fore/aft direction from the outside with the feed part 14 overlapped with the outside of the pressure part 13. With the feed part 14 and the pressure part 13 engaged with the roll staple 2, only the feed part 14 is moved ahead, thereby cutting the roll staple 2 from between the pressure part 13 and the feed part 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a staple cutting mechanism in a roll staple cartridge capable of appropriately cutting a roll-shaped staple wound in a roll when an abnormality or the like occurs.

[0002]

2. Description of the Related Art In general, an electric stapler employs roll staples in which straight staples are connected by a connecting tape and wound in a roll shape so that as many staples as possible can be continuously driven. It is known that the staples are sequentially formed into a U-shape from the leading staple and then punched out. The roll staple is attached to the cartridge and attached to the stapler main body, and the staples sent out from the staple feed passage of the cartridge are formed into a U-shape by molding means, and the formed staple is directed toward the material to be sewn by the driver. It is configured to be launched.

[0003] Roll staples are different from sheet staples in which straight staples are connected in a sheet form, and all the needles in a roll staple cartridge are connected in series. Since the check pawl is disposed in the cartridge and the roll staple is flexible, the protruding staple cannot be pushed back into the cartridge. For this reason, when staples are jammed during driving, the extra needle that has protruded has been cut off by hand.

[0004]

However, in the method of tearing off the connecting tape by hand, the cutting position becomes inaccurate and there is a danger of injuring a finger or the like.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a staple cutting mechanism in a roll staple cartridge which can solve the above problem and can easily and safely cut a roll staple in a cartridge at a predetermined position.

[0006]

In order to solve the above problems, a staple cutting mechanism in a roll staple cartridge according to the present invention accommodates a roll staple formed by connecting straight staples and winding the staples into a roll. In a roll staple cartridge provided with a storage section to be inserted and a staple feed path continuous from an opening formed in the storage section, the roll staple in the staple feed path is engaged with the upper or lower side of the staple feed path. A possible holding portion and a feeding portion are provided, and the feeding portion can be moved in the front-rear direction from outside with the feeding portion superposed on the outside of the holding portion, and the feeding portion and the holding portion are engaged with the roll staple. The roll staple is cut from between the presser and the feeder by moving only the feeder forward.

[0007] A tape cutter capable of cutting the connecting tape of the roll staples in the staple feeding passage may be arranged on the upper surface side or the lower surface side of the staple feeding passage, and the tape cutter may be operated from the outside.

[0008]

1 to 3, reference numeral 1 denotes a roll staple cartridge. This roll staple cartridge 1 is provided with a roll staple storage section 3 and a staple feed passage 4 in a cartridge body 1a. Roll staple 2 in staple storage unit 3
Is stored. The roll staple 2 is formed by connecting straight staples with a connecting tape and winding them in a roll shape.

The lower part of the storage part 3 is opened, and this opening 5
The outermost end of the roll staple 2 is led out of the staple feed passage 4 so as to pass therethrough. Further, a cap 6 is attached to an upper portion of the storage section 3, and the roll staple 2 is configured so that the cap 6 can be opened and stored in the storage section 3.

The staple feed passage 4 is continuous from the opening of the storage section 3 and is formed between the upper guide plate 4a and the lower guide plate 4b.
The check pawls 7 are arranged to be inclined forward, so that the staples 2 that have moved forward of the feed passage 4 do not move backward. Further, a part of the upper and lower guide plates 4a and 4b is open. A feed plate 8 is disposed on the lower surface side of the lower guide plate 4b so as to be movable back and forth. Three feed claws 9 are fixed to the upper surface of the feed plate 8 so as to be inclined forward, and the feed claws 9 protrude into the staple feed passage 4 through the opening of the lower guide plate 4b. The feed lever 10 is formed so as to be exposed downward from the lower surface of the feed plate 8. The feed lever 10 penetrates through an opening 11 formed in the lower portion of the cartridge body 1a and protrudes to the outside. The feed lever 10 is moved forward and backward to feed staples forward.

Next, as shown in detail in FIG. 4, a holding portion 13 and a feeding portion 14 are provided in the opening portion 12 of the upper guide plate 4a of the staple feeding passage 4. The holding portion 13 is formed so as to protrude forward from the upper guide plate 4a and bend up and down, and has a serrated engagement tooth 15 formed on the lower surface of the tip thereof. It is configured to engage with the upper surface of the roll staple 2 in the passage 4. The feed portion 14 is arranged on the upper portion of the holding portion 13 so as to be movable in the front-rear direction while being superposed. The feed portion 14 is exposed to the outside, the front end portion is bent downward, and a serrated engagement tooth 16 is formed on the lower surface thereof. The engaging teeth 16 are
Are arranged so as to be on the same plane as the engaging teeth 15, but the directions of the teeth are reversed.

In the above configuration, when the roll staple 2 is cut, as shown in FIG. 5, the feed unit 14 is moved forward by pressing the feed unit 14 from the upper opening 12 of the staple feed passage 4 with a finger. When the feed portion 14 is pressed, the press portion 13 is bent, and the engaging teeth 15 on the lower surface of the tip engage with the upper surface of the roll staple 2 in the staple feed passage 4 to press the roll staple 2 so as not to move forward. The engagement teeth 16 on the lower surface of the bent portion of the feed portion 14 also engage with the upper surface of the roll staple 2. When the feed unit 14 is moved forward, the roll staple 2 is forcibly moved forward. As described above, the roll staple 2 has one of the engaging teeth 1.
The roll staple 2 is separated from the two engaging teeth 15 and 16 by being moved forward by the other engaging tooth 16 while being stopped from moving forward by 5. The cut front part 2 a of the roll staple 2 can be pulled out from the front end of the roll staple cartridge 1 and removed.

The pressing portion 13 and the feeding portion 14 may be provided on the lower surface side of the staple feeding passage 4.

FIG. 6 shows another example of a tape cutting mechanism.
0 is arranged. A cutter insertion hole 21 is formed through the bottom of the front end of the cartridge main body 1a. A tape cutter 20 is disposed in the cutter insertion hole 21 so as to be able to protrude and retract in the staple feed passage 4. Being energized. Tape cutter 2
The lower part of 0 protrudes below the cartridge body 1a.

According to the above construction, when the cartridge body 1a is detached from the stapler body and the jammed staples are removed when the staples are jammed due to buckling at the time of driving, the tape cutter exposed from the cartridge body 1a is removed. 20 is pushed in to cut the connecting tape 23 connecting the staples.
The cut front portion of the roll staple 2 can be pulled out from the front of the staple feed passage 4 and removed by the feed lever 10 or the like. After the cutting is completed, the tape cutter 20 is returned to the original position and set on the stapler body.

An engaging hole 24 is formed in the lower portion of the tape cutter 20 and the roll staple cartridge 1 is inserted into a hook 25 provided on the stapler body.
Preferably to prevent the tape cutter 20 from moving. When the roll staple cartridge 1 is removed from the stapler body, the tape cutter 20 can be operated.

It is preferable that the tape cutter 20 be disposed corresponding to the connecting tape side of the roll staple in the staple feeding passage 4. When the connecting tape is provided on the upper surface side of the feeding passage 4, the upper surface thereof is used. It may be arranged on the side.

[Brief description of the drawings]

FIG. 1 is a side view of a roll staple cartridge.

FIG. 2 is a plan view of a roll staple cartridge.

FIG. 3 is a cross-sectional view taken along line XX of FIG. 2;

FIG. 4 is an enlarged sectional view of a cutting mechanism part of FIG. 3;

FIG. 5 is an explanatory view of an operation mode of a cutting mechanism.

FIG. 6 is a sectional view of another example of the cutting mechanism.

[Explanation of symbols]

 2 Roll staple 3 Storage section 4 Staple feed path 13 Holding section 14 Feed section 20 Tape cutter

Claims (2)

[Claims] 1. A roll having a storage section for storing roll staples formed by connecting straight staples and winding the same in a roll form, and a staple feed passage that is continuous from an opening formed in the storage section. In the staple cartridge, on the upper surface side or the lower surface side of the staple feed passage, a pressing portion and a feed portion that can be engaged with roll staples in the staple feed passage are provided, and the feed portion is externally overlapped with the outside of the press portion. The roll staple is cut from between the presser and the feeder by moving only the feeder forward while the feeder and the presser are engaged with the roll staple. A staple cutting mechanism in a roll staple cartridge. 2. A roll comprising a storage section for storing roll staples formed by connecting straight staples and winding the same in a roll form, and a staple feed passage which is continuous from an opening formed in the storage section. In the staple cartridge, a tape cutter capable of cutting the connection tape of roll staples in the staple feed passage is disposed on the upper surface side or the lower surface side of the staple feed passage, and the tape cutter can be operated from the outside. Staple cutting mechanism in the roll staple cartridge to be rotated.