JPH0354864Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is a staple cartridge used in a power-driven stapler that stores a staple sheet formed by connecting a large number of straight unformed staple materials into a plate shape. Regarding.

(Prior Art) A power-driven stapler has been devised to perform continuous binding operations, and the staples supplied to this type of stapler are unformed staples to improve storage efficiency in the cartridge. There is something. Some staple cartridges containing unformed staples include those in which the unformed staple material is connected in a sheet form and stacked in large numbers, and the stored staple sheets form a feeding device for the stapler. The layers are sequentially sent from the bottom to the molding device by an endless belt. However, if the staple forming device of the stapler is located near the staple sheet supply opening of the cartridge, since the staples are in the form of a sheet, the rear end of the sheet fed first and the leading edge of the sheet fed next. If a gap occurs between the cartridges, the staple forming device may operate idly due to this gap, interrupting the continuous stapling operation. The endless belt moves between the sheets to eliminate gaps between the sheets. Conventionally, the bottom surface of the bottom staple sheet supplied from the staple sheet supply opening was guided by the feed path of the stapler, and the top surface was guided and regulated by the guide section of the cartridge, and the sheet was fed to each forming impression, so that the bottom surface of the guide section A gap for one staple sheet S was provided between the upper surface of the feeding path and the upper surface of the feeding path.

(Technical problem of the invention) When the above-mentioned cartridge is attached to a stapler and used, the second staple sheet from the bottom layer in the cartridge is transferred to the second staple sheet from the bottom layer by the staple sheet feeding device. When the front end of the staple sheet is placed on the rear end of the bottom staple sheet and the rear end of the second staple sheet touches the endless belt of the staple feeder and is fed, the second staple sheet As the front end comes into contact with the front wall of the cartridge and the feeding continues, the front end moves upward along the slope provided on the front wall of the cartridge. In this state, the staple sheet can no longer be fed even though the feeding device is driven.

(Means for Solving the Problem) In order to eliminate the feeding failure of the second staple sheet in the above-mentioned cartridge, the front edge of the second staple sheet is moved upward along the front wall of the cartridge by the guide portion of the cartridge. A second guide portion is provided to prevent movement.

(Operation of the invention) When the bottom staple sheet is fed by the feeder of the stapler until its rear end remains in the cartridge, the rear end of the second staple sheet located above this staple sheet is fed by the stapler. It comes into contact with the endless belt that is the feeding device, and with its front end placed on the rear end of the bottom staple sheet, it begins to move forward due to the frictional force with the endless belt. As a result of this movement, the front end of the second staple sheet comes into contact with the vertical wall of the second guide section provided in the guide section of the cartridge.
The upper surface abuts against the upper wall of the second guide part, and the front end of the second staple sheet is regulated at that position, so that the front edge does not move upward along the front wall.

(Effect of the invention) As mentioned above, the front end of the cartridge is placed on the rear end of the lowest staple sheet, and the second staple sheet whose rear end is fed by the feeding device is provided in the guide section of the cartridge. This was installed because it was possible to prevent the front edge of the second staple sheet from moving upward along the front wall of the cartridge, which would interrupt the supply of the staple sheet due to its position being regulated by the second guide section. It is possible to smoothly perform continuous stitching work using a stapler without interruption.

(Example) The present invention will be explained based on FIGS. 1 and 2. Reference numeral 1 denotes a staple cartridge according to the present invention, in which a staple sheet S formed by connecting a plurality of straight unformed staple materials in a plate shape is placed in a frame consisting of a front wall 2, a rear wall 3, and side walls 4, 4. Holding sections 5, 5 which are stacked and stored in multiple stages and hold staple sheets S on the lower surface extend along the inside of the cartridge 1 at the lower ends 6, 6 of both side walls, and between both the holding sections 5, 5, is provided with an opening 7 for receiving a staple feeding device 51 of a stapler 50. The lower end 8 of the front wall of the cartridge 1 is provided with a staple supply opening 9, and the lowermost staple sheet S1 is passed through the staple supply opening 9 of the staple cartridge 1 into the stapler 50. Guide portions 10, 10 extending from the staple cartridge 1 to guide the forming device 52. Each guide part 1
A first guide part 11 that regulates and guides the upper surface S1a of the staple sheet S1 in the lowest layer, and a front end part S21 of the second staple sheet S2 located directly above the staple sheet S1. A second guide portion 12 is formed to restrict the upper surface S21a and the front edge S21b. The first guide portion 11 guides the upper surface S1a of the staple sheet S to the staple forming/driving device 52, and extends forward from the cartridge 1. As the bottom staple sheet S1 is sent forward by the endless belt 53, the contact area of the second staple sheet S2 located directly above with the endless belt 53 increases, and the front end S21 of the staple sheet S2 is moved forward by the endless belt 53. The staple sheet 2 moves forward while being placed on the rear end S12, but the upper surface S21a and the front edge S21b of the front end S21 of the staple sheet S2 are in contact with the upper wall 1 of the second guide part 12 and the front, respectively. It is regulated by the wall 14. The height of the front wall 14 is such that one staple sheet S is placed therebetween.
It is formed at a height that can accommodate one piece. Further, in the embodiment, a pair of guide parts 10, 10 extending from the front wall 2 of the cartridge 1 are provided with a first guide 11 and a second guide part 12, respectively, but the two guide parts 10, 10 are connected. It is also possible to have a structure in which the first guide part 11 and the second guide part 12 are provided on the lower surface of the guide part 11 and the second guide part 12 formed integrally.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a staple cartridge according to the present invention and a stapler to which this cartridge is attached, and FIG. 2 is a sectional view of the main parts of the staple cartridge according to the present invention. 1... Staple cartridge, 7... Opening,
8... Lower end of front wall, 9... Staple supply opening, 11... First guide part, 12... Second guide part, 13... Upper wall, 14... Front wall, 50...
...Stapler, 51...Staple feeding device, S
... Staple sheet, S1 ... Bottom staple sheet, S2 ... Second staple sheet.

Claims (1)

[Scope of utility model registration request] In a staple cartridge that stores staple sheets formed by connecting a plurality of straight unformed staple materials in a plate shape in a stacked manner, the lower end of the front wall is provided with an opening for supplying staples, and the lower surface is provided with a stapler for the cartridge. a first guide member provided with an opening that allows the lowermost staple sheet in the cartridge to come into contact with the staple feeding device of the stapler when the cartridge is attached to the cartridge; and a first guide member that regulates and guides the upper surface of the lowermost staple sheet at the lower end of the front wall; What is claimed is: 1. A staple cartridge comprising: a second guide portion positioned above the second guide portion for regulating the upper surface and front edge of the front end portion of the second staple sheet;