JPH0624603A - Paper feeder - Google Patents

Abstract

(57) [Summary] [Purpose] Even if the paper thickness is thin, the paper can be conveyed properly, and yet the structure is simple and the cost can be reduced. [Structure] A concave groove 5 into which the rear end of the paper A is inserted in the feed claw 4
To prevent the same part from being bent in the vertical direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a paper feeding device which is applied to, for example, a slipping paper machine or the like and which is used to convey a cover sheet or a mount sheet.

[0002]

2. Description of the Related Art Heretofore, as this type of paper feeding apparatus, those described in, for example, Japanese Utility Model Publication No. 1-112626 and Japanese Utility Model Publication No. 1-162727 are known. This is basically
A winding transmission wheel that is spaced apart from the front and rear, a winding transmission belt that is hung on the winding transmission vehicle and runs in a predetermined direction, and a portion of the winding transmission belt that is provided behind the paper. The main feed claw that is in contact with the end and the main feed claw are rotated in the same direction in synchronization with the main feed claw, and the main feed claw is in contact with the rear end of the paper before the main feed claw It is composed of a sub-feeding claw that can take an abutting position and a disengagement position where the paper is disengaged from the rear end of the paper, and a guide that guides the auxiliary feed claw from the abutting position to the disengagement position as the sub-feeding claw advances. . Therefore, in such a case, the sub-feeding claw and the main feeding claw are brought into contact with each other at different timings, and the trailing edge of the paper is brought into contact with a different place, so that the paper is properly conveyed even if it is thin. You can do it. However, although such a sheet can be conveyed properly even if the paper thickness is thin, at least a sub-feeding claw and a guide must be added, which makes the structure so complicated and costly. It was

[0003]

SUMMARY OF THE INVENTION The present invention was devised in order to solve the above-mentioned problems, and the object thereof is to properly convey even if the paper thickness is thin. It is an object of the present invention to provide a paper feeding device that is capable of doing so, yet has a simple structure and can reduce the cost.

[0004]

SUMMARY OF THE INVENTION The paper feeding device of the present invention is basically a winding transmission wheel which is spaced apart in the front-rear direction, and is wound around the winding transmission wheel to rotate in a predetermined direction. And a feeding claw for pushing the paper, which is provided in a part of the winding transmission band, and a concave groove formed in the feeding claw into which the rear end of the paper is inserted. There are features in things.

[0005]

Operation: The winding transmission belt wound around the winding transmission wheel is rotated in a predetermined direction. When the paper is supplied to the supply place at the rear of the upper side of the winding power transmission band, the trailing end of the paper is pushed by the feeding claw that has been rotated, and the paper is sent forward. At this time, since the rear end of the paper is not inserted into the groove and the same part is not bent in the vertical direction, the vicinity including the part does not get depressed even when the feed claws are fitted. , Kept straight. That is, when the rear end portion of the paper is inserted into the groove, the same portion can have a so-called waist. Therefore, even when the paper thickness is thin, it is possible to properly carry it, and it is possible to properly carry even so-called bad paper habit that easily curls.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic side view showing a paper feeding device according to an embodiment of the present invention. FIG. 2 is an enlarged side view of the main part of FIG. The paper feeding device 1 includes a winding transmission wheel 2, a winding transmission belt 3, a feeding claw 4,
A main part of the groove 5 is formed. The winding transmission wheel 2 is provided separately in the front and rear, and in this example,
The sprocket is used, and the front and rear sprockets are fixed to front and rear shafts 6 which are rotatably supported by a support (not shown). Thus, the front shaft 6 is linked to a rotary drive (not shown) and rotated in the counterclockwise direction in FIG. The winding transmission belt 3 is wound around the winding transmission wheel 2 and rotated in a predetermined direction. In this example, an endless chain is used, and its upper side is forward (leftward in FIG. 1). ) To move to). A receiving plate (not shown) for supporting and guiding the paper A is provided above the upper side of the winding transmission belt 3. Feed claw 4
Are provided in a part of the winding transmission belt 3 and are for pushing the paper A. In this example, three are provided at a predetermined interval and are connected in the middle of the winding transmission belt 3. A front-side substantially inverted U-shaped mounting body 7, a side-side substantially inverted T-shaped mounting body 8 mounted on the upper side of the front-side movable body 8 and a side-side substantially triangular shape mounted on the front side of a vertical piece thereof. And a guide body 9 presenting. The recessed groove 5 is formed on the feed claw 4 so that the paper A
The rear end portion is inserted, and in this example, the upper surface of the front horizontal piece of the body 8, the front surface of the vertical piece of the body 8, and the guide body 9 are inserted.
It is formed by the lower surface of the, and the front and side are opened. Thus, the concave groove 5 has a lower guide surface formed on the front upper part of the front horizontal piece of the body 8 and an upper guide surface formed on the lower front part of the guide body 9. The groove width B is determined in accordance with the paper thickness C, and the size is such that the rear end of the paper A can be easily inserted and the rear end of the inserted paper A is not easily bent in the vertical direction. There is. Next, the operation will be described based on such a configuration. When the rotary drive is started, the front and rear shafts 6 and the front and rear winding transmission wheels 2 are rotated in the counterclockwise direction in FIG. 1, and the winding transmission belt 3 has its upper side forward (in the left direction in FIG. 1). ) Is run to move to. In this state, the paper A is placed at the feeding position behind the upper side of the winding transmission belt 3.
Is supplied. The supplied paper A is carried by a receiving plate, and the trailing end is pushed by the feeding claws 4 that have run around, and is fed forward. At this time, the rear end of the paper A is inserted into the concave groove 5. When the rear end of the paper A is inserted into the groove 5, the same portion is not bent in the vertical direction, so that the vicinity including the same portion may be dented even when the feed claw 4 is fitted. Without being kept straight. That is, when the rear end portion of the paper A is inserted into the groove 5, the same portion can have a so-called waist. Therefore, even when the paper thickness C is thin, it is possible to properly carry it, and it is also possible to properly carry what is called a bad paper habit that easily curls.

Although the sprocket and the chain are used for the winding transmission wheel 2 and the winding transmission belt 3 in the above embodiment, the present invention is not limited to this, and a belt wheel and a belt may be used, for example. In the previous embodiment, the winding transmission belt 3 is configured to be rotated in a predetermined direction by rotationally driving the front winding transmission wheel 2. However, the winding transmission belt 3 is not limited to this. The transmission wheel 2 may be rotationally driven, both the winding transmission wheels 2 may be rotationally driven, or a dedicated drive wheel may be provided to rotationally drive this. Feed claw 4
In the above embodiment, the mounting body 7, the contact body 8 and the guide body 9 are used in the above embodiment, but the present invention is not limited to this, and they may be integrally formed. Although the groove width B is constant in the above embodiment, the groove 5 is not limited to this, and can be changed by allowing the guide body 9 to move up and down with respect to the body 8, for example. Is also good.

[0008]

As described above, according to the present invention,
The following excellent effects can be achieved. (1) Consists of a winding transmission wheel, a winding transmission band, a feed claw, and a concave groove, and in particular, the feed claw is formed with a concave groove into which the rear end of the paper is inserted, and the same portion is bent vertically. Since it is not done, it can be conveyed properly even if the paper thickness is thin,
Still, the structure is simple and the cost can be reduced. (2) Since the feed claw is formed with a concave groove into which the rear end of the paper is inserted so that the same part is not bent in the vertical direction, it is possible to properly carry even so-called curl that is easy to curl. You can (3) Since only the concave groove is formed in the feeding claw, it can be easily applied to the existing paper feeding device.

[Brief description of drawings]

FIG. 1 is a schematic side view showing a paper feeding device according to an embodiment of the present invention.

FIG. 2 is an enlarged side view of a main part of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Paper feeding device, 2 ... Winding transmission wheel, 3 ... Winding transmission belt, 4 ...
Feed claw, 5 ... concave groove, 6 ... shaft, 7 ... mounting body, 8 ... this body, 9
... guide, A ... paper, B ... groove width, C ... paper thickness.

Claims (1)

[Claims] 1. A winding transmission wheel which is provided in front and rear of the winding transmission wheel, a winding transmission belt which is wound around the winding transmission vehicle and runs in a predetermined direction, and a winding transmission belt which is provided in a part of the winding transmission belt. A sheet feeding device comprising: a feeding claw for pushing the paper and a concave groove formed in the feeding claw into which a rear end portion of the paper is inserted.