JPH0577139U - Paper feeder - Google Patents

Abstract

(57) [Summary] [Purpose] A paper feeding device that can reliably feed sheets one by one. [Structure] When two sheets of the leaflets 1 and 1a are sent out by blowing air obliquely upward from the air discharge port 5 toward the accumulated topmost leaflet 1a sent out by the delivery roller 2, these leaflets 1a are sent out. Air flows in between 1 and 1a to raise the upper leaflet 1a, so that the leaflet 1a,
Only the upper leaflet 1a is transferred by the frictional force of the pair of transfer rollers 3 and 4 having a vertical interval set narrower than the thickness of 12 sheets. At this time, the lower leaflet 1 is blocked by the transfer roller 4 that rotates in the opposite direction to the transfer direction, and enters a standby state. After the upper leaflet 1a is transferred, the lower leaflet 1 is transferred by the transfer roller 4.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a paper feeding device, and more particularly to a paper feeding device that feeds a plurality of stacked sheets one by one from the topmost one to an appropriate processing device.

[0002]

[Prior Art]

 This type of conventional paper feeder has a structure in which a pair of upper and lower rotating members such as rollers are provided, and the interval between these rotating members is adjusted to supply one sheet at a time, and one sheet using negative pressure suction force. It is known that the components are separated into individual parts and supplied by a rotating member such as a roller.

[0003]

[Problems to be solved by the device]

 However, in the above-mentioned conventional example, when the intervals of the rotating members are adjusted and the sheets are supplied one by one, the friction coefficient of the paper and the smoothness of the paper make it easier to adhere, or static electricity is more likely to affect the stability. However, the structure that separates the sheets one by one using negative pressure suction force enables stable supply, but the structure is complicated and the compressor with large capacity has a large capacity. There is a disadvantage that is required. It is an object of the present invention to provide a paper feeding device that eliminates such inconvenience.

[0004]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the paper feeding device of the present invention is provided with a feeding roller that contacts the uppermost surface of a plurality of stacked sheets and sends out the uppermost sheet in a predetermined direction. In order to transfer the sheets sent by the feed roller one by one in a predetermined direction, they are arranged at intervals below the thickness of the two sheets, and the upper roller rotates in the transfer direction. , The lower rollers are arranged at least between the pair of transfer rollers configured so as not to rotate in the transfer direction, and between the transfer rollers and the delivery rollers along the transfer path of the sheet, and It is provided with an air discharge port for blowing air toward the direction opposite to the transfer direction and upward.

[0005]

[Action]

 While the sheet reaches the transfer roller from the delivery roller, air is blown from the lower side in the direction opposite to the transfer direction, and the air flows between the stacked sheets to transfer the transfer roller. Are reliably separated in the vertical direction by the frictional force of and are transferred one by one in a predetermined direction.

[0006]

【Example】

 Hereinafter, a preferred embodiment in which the present invention is applied to an envelope creating apparatus will be described in detail with reference to the accompanying drawings. Here, FIG. 1 is a side view showing an enlarged main part of the paper feeding device, FIG. 2 is a schematic plan view of the same, and FIG. 3 is a perspective view showing a relation with a letter creating device.

First, the sheet supply device 10 will be described with reference to FIGS. 1 and 2. A large number of leaflets 1 which are sheets to be inserted into a letter are piled up in a predetermined state urged upward so that the uppermost leaflet 1a always comes into contact with the delivery roller 2, and the uppermost leaflets 1a are also stacked. The position surface is regulated by the pressing plate 8 so that it is always in a fixed position. The delivery roller 2 is configured to be rotationally driven counterclockwise in FIG. 1, and delivers the uppermost leaflet 1a in the right direction in FIG. A pair of upper and lower transfer rollers 3 and 4 for transferring the leaflets 1a sent out by the delivery rollers 2 one by one in a predetermined direction, the upper transfer roller 3 having a large diameter, and having a thickness of two leaflets 1 The transfer rollers 3 on the upper side rotate counterclockwise in FIG. 1, which is the transfer direction, to transfer the leaflets 1, while the transfer rollers 4 on the lower side do not. On the other hand, it is configured to rotate counterclockwise in FIG. 1 so as to prevent the transfer of the lower leaflets 1 having two or more sheets overlapped.

An air discharge port 5 is arranged between the delivery roller 2 and the transfer rollers 3 and 4 in the transfer path of the leaflet 1. As shown in FIG. 1, the air discharge port 5 is provided with a predetermined inclination angle so that air is blown upward in a direction opposite to the transfer direction of the leaflet 1 and via the bracket 6. And is fixed to the fixing member 7. The air discharge port 5 is connected to an appropriate air supply device (not shown).

Therefore, the uppermost leaflet 1a sent out rightward in FIG. 1 by the sending roller 2 is in a state of being lifted from the tip end portion by the air blown from the lower side opposite to the transfer direction. For this reason, even if two sheets are delivered in an overlapping manner, the top leaflet 1a is slightly displaced in the transfer direction from the leaflet 1 overlapping the lower layer at the leading end, so that two leaflets have air. The leaflets 1a in the uppermost position are lifted up and separated from the lower leaflets 1a, and only the uppermost leaflet 1a is transferred in a predetermined direction by the frictional force of the transfer roller 3. It At this time, the lower leaflet 1 is blocked by the lower transfer roller 4 which rotates in the direction opposite to the transfer direction, and enters a standby state. The transfer roller 3 transfers the transfer roller 3 in a predetermined direction.

Next, a case where the sheet supply device 10 having the above-described configuration and operation is applied to the letter creation device shown in FIG. 3 will be described. As shown in FIG. 3, the unit envelope form 11 in a continuous state folded at each folding and cutting perforation 12 is a Z-shape at the folding perforations 16a and 16b by a known folding device 21. The upper and lower paper pieces 13 and 14 have their back surfaces facing each other, and the inner paper pieces 14 and the lower paper piece 15 have their front surfaces facing each other, so that each pressure-sensitive coating is applied in a predetermined pattern (not shown). The symmetrically applied parts of the adhesive are folded in a state of facing each other, and the transfer holes 18a and 18b are engaged with the pins of the tractor 22 and transferred. As a result, the unit envelope form 11 is folded and folded with the respective marginal portions 9a and 9b protruding in the left-right direction, and after passing through the tractor 22, the marginal portion 19a on the upper paper piece 13 side is cut off by the slitter 23.

Subsequently, the unit letter-forming form 11 folded in a Z-shape in a continuous state passes below the plate 25 via a pair of upper and lower infeed rollers 24 a and 24 b that rotate at a low speed, and a high speed. When reaching the pair of upper and lower high-speed rollers 26a, 26b which rotate at 1, the appropriate tension is applied due to the difference in the transfer speed of the rollers 24a, 24b, 26a, 26b, and the perforation / cutting perforation 12 When the blade 25 comes into contact with the blade 25, the blade 25 is cut off into a single piece.

Next, each of the upper rollers 27a, which is composed of two pairs of upper and lower rollers, passes through the pressure-bonding rollers 27a and 27b having a small diameter on the marginal portion 19b side, and is in a Z-shaped three-fold state. The pressure, which is the bonding condition, is applied to each pressure-sensitive adhesive except for the marginal portion 9b side, which is to be the sealing port of the unit envelope form 1, by the large diameter portion of the pressure roller 27a. As a result, the enclosing bag 34 having the enclosing port 33 and having its three peripheral edges excluding the enclosing port 33 portion adhered is formed.

When the enclosing bag 34 is moved to a position corresponding to the sheet supply device 10, the leaflet 1 is inserted. That is, the leaflet 1 and the air blown from the air discharge port 5 are transferred to the sealing inlet 33 opened by an appropriate opening device (not shown) from the direction perpendicular to the transfer path of the sealing bag 34. It is supplied one by one by 3 and 4, and is inserted between the middle paper piece 14 and the lower paper piece 15 of the enclosing bag 34.

The enclosing bag 34 in which the leaflet 1 has been inserted has the marginal portion 19b cut off by the slitter 30 in the subsequent transfer process. Then, the opening 33 in the opened state is pressed by the pair of upper and lower pressure bonding rollers 31a and 31b to the pressure-sensitive adhesives in the non-bonded state, so that the leaflet 1 is pressed. A sealed letter 36, which is sealed and sealed one by one, is created.

It should be noted that the present invention is not limited to the above-described embodiment, and, for example, the air discharge port 5 is angled in the vertical direction with respect to the transfer path of the leaflet 1 and in the horizontal direction. Can also be placed at an angle. Therefore, the air outlet 5 may be arranged below the side of the transfer path of the leaflet 1 to blow out air obliquely upward. Also, the positional relationship of the delivery roller 2 and the pair of transfer rollers 3, 4 with respect to the sheet of the leaflet 1 or the like to be transferred can be variously changed according to the quality of the sheet, and the pressing plate can be changed accordingly. The position of 8 is also changed appropriately, and depending on the case, this pressing plate 8 becomes unnecessary. .

[0016]

[Effect of the device]

 As is clear from the above description, according to the present invention, it is possible to reliably feed the sheets one by one in the predetermined direction with a simple and compact device.

[Brief description of drawings]

FIG. 1 is an enlarged side view showing a main part of a paper supply device.

FIG. 2 is a schematic plan view of a sheet feeding device.

FIG. 3 is a perspective view showing the relationship with the letter creating apparatus.

[Explanation of symbols]

 1,1a Leaflet 2 Sending roller 3,4 Transfer roller 5 Air discharge port 8 Holding plate

Claims (1)

[Scope of utility model registration request] 1. A delivery roller for contacting the uppermost surface of a plurality of stacked sheets and delivering the uppermost sheet in a predetermined direction, and a sheet of paper delivered by the delivery roller. Since the sheets are transported one by one in a predetermined direction, they are arranged at intervals below the thickness of the two sheets, and the upper roller rotates in the transport direction and the lower roller does not rotate at least in the transport direction. A pair of transfer rollers configured as described above, and disposed between the transfer roller and the delivery roller along the sheet transfer path, and directed toward the opposite direction of the sheet transfer direction and upwards. A paper supply device, which is provided with an air discharge port for blowing out air.