JPH0240959Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a sheet folding machine for folding sheets that have been washed and ironed in two to four folding steps.

[Conventional technology]

The conventional sheet folding machine was replaced with the first drawing of this invention.
To explain with reference to the drawings, 1 is a belt for transporting ironed sheets 2, and 3 is a drive roll on the side from which sheets are discharged from the transport belt 1.

Immediately below the drive roll 3, there is a sheet folding plate 6 for folding sheets in half or in quarters, which advances and retreats between the sheet holding rolls 4 and 5 facing the drive roll 3.
When the sheets 2 supplied to the transfer belt 1 reach the drive roll 3 side and hang down halfway as shown in the figure, a sensor or the like detects this and the folding plate 6 is inserted between the sheets and the rolls 4 and 5. , when the sheets 2 are folded in half or in four when moving as shown in FIG.
At the same time as the biting, the folding plate 6 is restored to its old position.

The sheets 2 folded in half or in four and held between rolls 4 and 5 are placed on a table 7.

[Problem that the invention attempts to solve]

The sheets supplied to the transfer belt are charged with static electricity on the transfer belt or due to the material of the sheets themselves, and are attracted to the belt during the drying process or ironing process after washing, and the sheet discharge side is driven. Not only will the belt return to the belt at the roll portion, making it impossible to fold the folding plate, but it may also cause damage to the equipment.

The purpose of this invention is to provide a sheet folding machine that can reliably discharge the sheets hanging down from the drive roll section even if the sheets on the transfer belt are attracted to the belt due to static electricity.

[Means for solving problems]

In order to solve the above problems, this invention provides multiple separators with a diameter larger than the roll diameter at intervals on the drive roll on the sheet discharge side of the transfer belt, and the transfer belt is interposed between each separator. This is a sheet folding machine that divides sheets into a plurality of sheets so that they can be received by the roll portion of a drive roll.

[Effect]

The sheets fed onto the transfer belt reach the drive roll on the discharge side, ride on the separator of the roll, and are released from adsorption to the belt due to the static electricity charged on the sheets or the transfer belt, and the sheets are transferred to the front side of the sheet. hangs securely from the drive roll part.

〔Example〕

The drive roll 3 of the transfer belt 1 on the side from which sheets 2 are discharged is provided with a plurality of separators 8 having a diameter larger than the roll diameter at equal intervals. As shown, the belt 9 is divided into a plurality of strips so as to be interposed between the separators and received by the roll portion of the drive roll 3.

Also, a plurality of tongue-like pieces 10 are formed at the tip of the folding plate 6 so as to be interposed between the separators and approach each belt 9.

11 is a support arm for the folding plate 6, and the rear end of this arm is supported in place by a shaft 12.
13 is a cylinder for moving the folding plate 6 forward and backward (oscillating) between the drive roll 3 and the biting rolls 4 and 5, and the rear end of the piston 14 is connected to the protrusion 15 on the side near the base of the support arm 11. is connected to.

The operation of the cylinder 13 is such that it swings from the drive roll 3 side toward the biting rolls 4 and 5 and then returns to its previous position. When the tip side is halfway down, it is detected by a sensor etc. and the cylinder is driven, but the details are omitted from illustration.

The sheets 2 are hanging halfway down from the drive roll 3, and a sensor detects this and moves the sheets to the cylinder 13.
When the folding plate 6 is driven, as shown in FIG. The upper part of the hanging part a of the sheet is scooped up and fed between the rolls 4 and 5, and then restored to its original position. It is then sent to table 7.

Further, a tongue-like piece 10 is formed on the tip edge of the folding plate 6, and since the tongue-like piece 10 is located between the roll 3 and the separator 8 on the roll 3 side and approaches the roll 3, the separator When the sheet 2 is attracted to the sheet 8, the tongue-shaped piece 10 gives an action of scraping the sheet downward.

The sheets 2a folded in half or in four are
In the next step, it is folded even smaller.

16 is a tension roll of the transfer belt 1.

〔effect〕

The sheet folding machine of this invention has the following effects.

(1) On the drive roll on the sheet discharge side, multiple separators with a diameter larger than the drive roll are provided at intervals, and the transfer belt is divided into multiple strips interposed between each separator. Each of these divided belts is received by the roll portion of the drive roll, so even if the transfer belt or the sheets supplied to it are charged with static electricity, the sheets will not ride on the separator on the discharge side of the transfer belt. The adhesion to the belt (drive roll part) is released, and the leading edge of the sheets hangs down securely from the drive roll part.

(2) On the discharge side of the transfer belt, the front end of the sheets hangs down from the drive roll, so they are accurately folded in half or in four by the folding plate and reliably bitten into the biting roll.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view of the main parts of an embodiment of the sheet folding machine according to the present invention, Fig. 2 is an enlarged longitudinal sectional front view of the same in the operating state, and Fig. 3 is an enlarged right side view of the drive roll section. It is a front view. 1... Transfer belt, 2... Sheets, 3... Drive roll, 4, 5... Biting roll, 6... Folding plate, 8... Separator, 9... Division belt.

Claims (1)

[Scope of utility model registration request] In a sheet folding machine, a sheet folding machine is provided with a sheet folding plate that advances and retreats toward a sheet catching roll facing the drive roll, directly below the drive roll on the sheet discharge side of the transfer belt. The driving roll is provided with a plurality of separators having a diameter larger than the roll diameter at intervals, and the transfer belt is divided into a plurality of strips so as to be interposed between the separators and received by the roll portion of the driving roll. A sheet folding machine.