JPS60209466A - Folding/conveying device of sheet-like objects - Google Patents

Abstract

PURPOSE:To convey sheet-like objects while folding them by conveying the sheet-like objects stacked on both slant surfaces protruded on the center of a mounting bed via a pair of facing conveyor belts in contact with both slant sections. CONSTITUTION:Many sheet-like polyvinyl chloride bags 8 previously aligned are stacked on a mounting bed 2 protruded on the center having slant surfaces 6 on both sides from the top section 4, and a conveying mechanism 10 is arranged directly above it by being supported by a base bed. A pair of conveyor belts 12, fixed rollers 14, 16, and sway rollers 18 of the mechanism 10 are arranged symmetrically on the right and left facing to each other. When the fixed rollers 14, 16 are rotated and driven, the belts 12 are run in the arrow B direction, the sway rollers 18 are swayed in the arrow A direction is synchronism, the belts 12 are pressed on both slant sections 8a of a bag 8, and the bag 8 is pushed upward while being folded at its center.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an apparatus for folding and transporting a sheet-like object such as a polyethylene sheet or a plastic bag made of sheets laminated together.

(Prior art) Conventionally, products made of soft polyethylene sheets (poly fs'
'a/r+a/l-) IfMW pain ITIL/7'14
(!The weight of 1#m vinyl is also extremely light. Moreover, it is slippery and is charged with static electricity, so its poor workability is more pronounced than with other materials, and post-processing is usually done manually. Therefore, the present applicant proposed a "soft sheet folding and transport mechanism" (Utility Model Application Publication No. 57-53) regarding the above-mentioned post-processing device.
No. 452).

Despite the desire to store plastic bags in paper boxes, a device that transports plastic bags while folding them has not yet been developed.

(Objective of the Invention) An object of the present invention is to provide a folding and conveying device for a sheet-like object that can convey the sheet-like object while folding the sheet-like object into two.

(Structure of the Invention) The present invention includes a mounting table whose central part of the upper surface protrudes upward and has sloped surfaces on both sides, and a top surface of the mounting table with L+S city syllables and a Tonahekioka eggplant small fr< ＾Equipped with a conveyance mechanism having a pair of opposing conveyance belts, the conveyance belts are brought into contact with both inclined sides of the sheet-like articles stacked on the aforementioned mounting table to fold the sheet-like articles. This is a folding and conveying device for sheet-like materials, which is characterized in that it can be conveyed while the sheet is folded.

(Example) In FIG. 1, reference numeral 2 denotes a synthetic resin mounting table that prevents static electricity, and this mounting table 2 is in a state where it is urged upward by a base (not shown), for example, via a spring. It is installed in The center part of the upper surface of the mounting table 2 protrudes upward, and the top part 4 is formed into a curved surface with a predetermined radius of curvature R.
Both sides thereof are inclined surfaces 6 that are inclined toward both ends of the mounting table 2. Note that the top portion 4 is not limited to having its center of curvature coincident with the center line of the mounting table 2, and may have its center of curvature biased near the center line.

A large number of plastic bags 8, which are sheet-like materials manufactured by a bag-making machine, are stacked on the top surface of the mounting table 2, and these plastic bags 8 are placed with their edges aligned in advance by the bag-making machine. They are stacked on a table 2.

A transport mechanism 10 is provided directly above the mounting table 2 and is supported by a base. This conveyance mechanism 10 consists of a conveyance belt 12, fixed rollers 14, 16, and swinging rollers 18.
A pair of these belts 12 and each roller are arranged facing each other in left-right symmetrical positions. The fixed roller 14
, 16 are pivotally supported directly above the top portion 4 along the center line of the mounting table 2, and these fixed rollers 14, 16 are driven to rotate at a predetermined speed by a motor (not shown). The swinging roller 18 is driven to rotate as the belt 12 runs, and is rotated by an arrow A by a link mechanism to be described later.
The belt 12 is supported intermittently so as to be able to swing in the
The inclined side 8a) of the plastic bag 81 is suppressed. The outer circumference f of each of these rollers is wrapped with a plurality of belts 12 spaced at equal intervals in the width direction, the number of which increases according to the sheet width, and which has a large friction coefficient on the surface and is treated with antistatic treatment. These belts 1
2 is a plastic bag 8 folded along the inclined side 8a of the plastic bag 8 between the swinging roller 18 and the fixed roller 16, and along the center line of the mounting table 2 between the fixed rollers 14 and 16. It runs upwards, ie, in the direction of arrow B, at an appropriate interval to hold it.

Reference numeral 20 denotes a guide plate, which can be made of a steel plate coated with Teflon resin on the lower surface, and is placed between adjacent belts 12 via a bracket 22, so that it does not prevent the plastic bag 8 from sliding. The plastic bag 8 is pressed lightly.

The link mechanism for swinging the swinging roller 18 in the direction of arrow A has one end rotatably attached to the base 24 and the other end supporting the center shaft 18a of the swinging roller 18, as shown in FIG. The arm 30 of the crank 28 is rotatably attached to the middle of the link 26, and the crank 28 is rotationally driven by a motor (not shown) to move the left and right swinging rollers 18 in the direction of arrow A.
In other words, both are oscillated in synchronization in the A1 or All direction.

r rrs u'/h j1m hat-) 91t91g
llrr云1. f=4. For example, as shown in FIG. 3, an eccentric cam 32 may be used to press the link 26 expanded by a spring 26a, or as shown in FIG. , link 26 to arm 34 . The rods 36 may be connected, and the rods 36 may be moved back and forth by a crank mechanism or the like.

Next, the operation will be explained. Rotate the motor and fix roller 1
When 4.16 is rotated, the belt 12 runs in the direction of arrow B. At this time, the left and right swinging rollers 18 are each 1ζ
When the rollers 18 are synchronously oscillated in the direction of arrow A and the oscillating rollers 18 are oscillating downward, the belt 12 is pressed against both inclined sides 8a of the plastic bag 8 to fold one plastic bag 8 at the center. while pushing upward. Eventually, when the upper end of the plastic bag 8 is clamped by the belt 12 between the fixed rollers 16, the swinging roller 18 swings upward and the belt 12 becomes detached from the inclined side 8a of the plastic bag 8. The plastic bag 8 is conveyed upward while being held between the belts 12, and is discharged as a plastic bag 8 folded in two as shown in FIG.

(81% light! Ih 凰) (a) The post-processing work of the plastic bag 8 manufactured by the bag making machine, that is, the work of folding the plastic bag 8 in half, is quickly performed without relying on humans as in the past. Moreover, since the plastic bag 8 can be transported upward from the transport mechanism 10,
All that is left to do is to store a predetermined number of folded plastic bags 8 into outer bags or paper boxes, which can save labor in post-processing work.

(b) Since the plastic bag 8 is conveyed upward by the belt 12, when the plastic bag 8 is pushed out by the belt 12, two plastic bags 8
are not pushed out at the same time, and it is possible to reliably transport each plastic bag 8 while folding it one by one.

(Another Embodiment) The swinging roller 18 is not limited to the one that swings in the direction of arrow A and pushes out the plastic bag 8 intermittently. Efficiency can also be further improved by forcing the plastic bag 8 out using the plastic bag 8.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view of a plastic bag folding and conveying device according to the present invention, and FIGS. 2 to 4 are structural diagrams of the link mechanism, respectively. 2...Placement stand, 8...Plastic bag, 1
o... Conveyance mechanism, 12... Belt, 14, 16.
・Fixed roller, 18 ・Swinging roller Patent applicant Koji Saeki

Claims (1)

[Claims] A mounting table having a central portion of the upper surface protruding upward and having sloped surfaces on both sides, and a conveyance mechanism having at least one pair of opposing conveyance belts running upward along both sloped surfaces on the upper surface of the loading table. A folding and conveying device for sheet-like objects, characterized in that the conveying belt is brought into contact with the oblique sides of both ends of the sheet-like objects stacked on the mounting table, so that the sheet-like objects can be conveyed while being folded.