JPH0999915A - Vacant bag supplying device for bag filling machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent generation of snaking and wrinkle in a vacant bag so as to improve workability of bag filling work by pinching the vacant bag by pressing a bag pressing belt to a roller face of a bag pulling roller and pinning the vacant bag against the face of the bag pulling roller as long as possible. SOLUTION: In a vacant bag supplying device for a bag filling machine, layered vacant bags are pulled out being sucked by a plurality of sucking pads 34 and slid down for supplying on a supplying sliding plate 61 on a slant face as a supplying side of the bag filling machine. In the vacant bag supplying device, a bag pulling roller 41 is arranged adjacently to the top end part of the supplying sliding plate 61. On the roller face of the bag pulling roller 41, a bag pressing belt is arranged through a pair of belt rollers 52. When the vacant bags are to be conveyed to the supplying sliding plate 61 being pinched, the vacant bag are pinned against the roller face of the bag pulling roller 41 as long as possible.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is designed to pull out stacked empty bags while adsorbing them by a plurality of adsorption pads and slide them down onto a supply slide plate on an inclined surface which is a supply side of a bag filling machine. The present invention relates to an empty bag supply device for a bag filling machine.

[0002]

2. Description of the Related Art As a conventional empty bag supply device for a bag filling machine, a bag pulling roller is arranged in contact with a plurality of driven rollers along the circumferential direction of the roller and is sucked by a suction pad. In general, an empty bag that has been pulled out is sandwiched between a bag pulling roller and each driven roller and conveyed to the bag packing machine side.

[0003]

However, in such a conventional empty bag supply device for a bag filling machine, since the empty bag is held only at the position where the bag pulling roller and each driven roller are in contact with each other, there is no place to hold the empty bag. Due to the small number of empty bags, the empty bags may meander, and the empty bags may rise between adjacent driven rollers, and the raised parts may be pressed and wrinkled. However, there is a problem in that the bagging workability is not good because it is necessary to correct the posture of the product and remove the wrinkled empty bag. The present invention has been made by paying attention to such a conventional problem, and is a bag pulling roll.
The bag-holding belt can be pressed against the roller surface of the bag, and the empty bag is pinched by the roller surface of the bag-drawing roller and the belt surface of the bag-holding belt so that it can be transferred onto the supply slide plate. It is possible to hold the bag along the roller surface of the pull roller as long as possible to prevent the empty bag from meandering, prevent wrinkles from occurring, and improve bagging workability. An object is to provide an empty bag supply device for a bag filling machine.

[0004]

The gist of the present invention for achieving the above object lies in the invention described in the following items. (1) Bagging in which the stacked empty bags are pulled out while being adsorbed by a plurality of adsorption pads (34), and are slid down and supplied onto a supply slide plate (61) on an inclined surface that is the supply side of the bagging machine. In the empty bag feeder of the machine, a bag pulling roller (41) is arranged adjacent to the upper end of the feeding slide plate (61) and can be pressed against the roller surface of the bag pulling roller (41). The bag pressing belt (5) so that the drawn empty bag is sandwiched by the roller surface and the belt surface and can be transferred onto the supply slide plate (61).
An empty bag supply device for a bag filling machine, characterized in that 1) is routed.

2 While pulling out the stacked empty bags while adsorbing them by a plurality of adsorption pads (34), the empty bags are slid onto the supply slide plate (61) on the inclined surface which is the supply side of the bag filling machine. In the empty bag supply device of the bag filling machine, a suction pad (34) for adhering the stacked empty bags
And a bag withdrawing mechanism (30) for moving the suction pad (34) by swinging the suction pad (34) to the bag filling machine side, and an empty bag withdrawn from the bag withdrawing mechanism (30). And a bag loading / unloading mechanism (40) for drawing the bag and feeding it onto the supply sliding plate (61), the bag loading / unloading mechanism (40) being disposed adjacent to the upper end of the supply sliding plate (61). The bag-pulling roller (41) provided and a roller surface of the bag-pulling roller (41) can be pressed against each other, and the empty bag pulled out is sandwiched between the roller surface and the belt surface of the bag-pulling roller (41) to supply the bag. A bag pressing belt (51) arranged so as to be transferable onto the sliding plate (61) for winding the bag pressing belt (51) around a pair of belt rollers (52), and The bag pressing belt through the belt roller (52) The bag pulling roller 51) (41)
An empty bag supply device for a bag filling machine, wherein the empty bag supply device is swingably supported at a press-contact position where the roller surface is pressed and a separation position where the roller surface is separated from the roller surface. 3. The empty bag supply device for a bag filling machine according to claim 1 or 2, wherein the bag pressing belt (51) is a driven belt that is driven by the bag pulling roller (41) that is a driving roller.

Next, the operation of the invention described in each of the above items will be described. The stacked empty bags are pulled out while being adsorbed by the plurality of adsorption pads (34). The drawn empty bag is drawn into the bag drawing roller (41). The drawn empty bag is sandwiched by the roller surface of the bag drawing roller (41) and the belt surface of the bag pressing belt (51), and is sent to the upper end portion of the supply sliding plate (61). At this time, the bag pressing belt (51) pulls the empty bag into the bag pulling roller (4
It becomes possible to hold down as much as possible along the roller surface of 1), whereby the empty bag does not meander and it is possible to prevent the empty bag from wrinkling. further,
When the bag-pulling roller (41) rotates, it eventually slides down on the supply slide plate (61), which allows the empty bag to be transferred onto the supply slide plate (61).

In the empty bag feeder of the bag filling machine according to the second aspect, the bag pressing belt (5) constituting the bag loading / unloading mechanism (40).
1) is wound around a pair of belt rollers (52), and the bag pressing belt (51) is pressed against the roller surface of the bag pulling roller (41) via the pair of belt rollers (52). Since it is swingably supported at the separated position away from the roller surface, when the bag pressing belt (51) is in the pressure contact position, the roller surface of the bag pulling roller (41) and the bag pressing belt (51) are temporarily assumed. When it is necessary to take out the sandwiched empty bag, the bag pressing belt (51)
By swinging to a separated position to widen the gap between the roller surface of the bag pulling roller (41) and the bag pressing belt (51),
Just take out the empty bag.

Further, by appropriately changing the number of the bag pressing belts (51) and the belt width, it is possible to adapt to the material and hardness of the empty bag to be conveyed.

In the empty bag feeding device of the bag filling machine according to the present invention, since the bag pressing belt (51) is a driven belt driven by the bag pulling roller (41) which is a driving roller, it is sandwiched between the two. If the driven belt is driven by the frictional force from the empty bag that is transferred as a result and a relatively large slippage does not occur between the two, the empty bag is pressed into the roller surface of the bag pulling roller (41). Transported reliably.

[0010]

DETAILED DESCRIPTION OF THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. Each drawing shows an embodiment of the present invention. As shown in FIGS. 1 and 2, a drive shaft 11 and a driven shaft 12 are rotatably supported by a frame 10 of the empty bag feeder, and an electric motor 13 is connected to the drive shaft 11. Sprockets 14 and 15 are fixed to the drive shaft 11 and the driven shaft 12, and the conveyor slat 1 is attached to the sprockets 14 and 15.
6 is wound. The conveyor slats 16 include
A large number of pairs of bag side surface guides 17 that can be guided in the front-rear direction by being applied to the side edges of the stacked empty bags are continuously provided.
Further, the conveyor slat 16 is fixedly provided with a deviation preventing metal member 18 having a triangular cross section for stopping the empty bag from being displaced. In the frame 10 of the empty bag feeder,
Front guide 19 for guiding while aligning the bottom edges of empty bags
Is erected. The conveyor slat 16 stops when the pair of bag side surface guides 17 moves to the empty bag withdrawing position,
It is configured to start when all empty bags are withdrawn.

A gate type frame 20 is attached to the frame 10 of the empty bag feeder, and a gate pillar member 21 of the frame 20 is attached.
A bag withdrawing mechanism 30 is arranged at the upper end of the. An upper frame 22 is installed on the gate pillar member 21, an air cylinder body 31 is swingably supported on the upper frame 22, and a mounting plate 33 is connected to an output rod of the air cylinder body 31 via a floating joint 32. A suction pad 34 for sucking the bottom edge of the empty bag is arranged on the mounting plate 33 so as to be able to move up and down in a lowered position and a raised position. A pair of guide rods 33a is extended upward on the mounting plate 33, a roller support bracket 35 is installed on the gate pole member 21 and the cylinder bracket 31a, and the guide rods 33a are sandwiched between the roller support brackets 35 from both sides. A pair of guide rollers 35a that guides in the vertical direction is supported.

As shown in FIG. 1, FIG. 3, FIG. 5 and FIG. 6, an intermediate frame 23 is installed on the frame 20, and an empty bag is inserted from the pulling position to the inserting position via the suction pad 34 on the intermediate frame 23. Drive cylinder 36 for transfer
Is swingably supported, and the output rod of the drive cylinder 36 is connected to the air cylinder body 31 via a joint member 37 and a cylinder pin 38. In the frame 20,
A bag loading / unloading mechanism 40 is provided for drawing in the empty bag transferred from the bag withdrawing mechanism 30 and sending the empty bag onto the supply slide plate 61 arranged in front. The bag loading / unloading mechanism 40 is provided with a bag pulling roller 41. The bag pulling roller 41 is rotatably installed at the center of the pair of gate post members 21 of the frame 20 in the vertical direction, and is adjacent to the upper end of the supply slide plate 61. Are arranged in such a manner. A drive motor 42 is connected to the rotary shaft of the bag pulling roller 41.

A support bracket 24 is fixedly mounted on the middle frame 23 of the gate column member 21, and a pair of swing arms 44 on both sides are supported by the support bracket 24 via a pivot 43. The swing arm 44 extends forward along the bag pulling roller 41, and the bag pulling roller 41 is provided with three shaft members 45, 46, and 47 from the front side. The belt roller 52 is attached to the shaft members 45 and 47.
Are rotatably supported, and the pair of belt rollers 5
A bag pressing belt 51 is wound around the bag 2. The bag pressing belt 51 is displaceable between a pressure contact position where it is pressed against the roller surface of the bag pulling roller 41 and a separation position where it is separated from the roller surface when the swing arm 44 swings.
The drawn empty bag is sandwiched between the roller surface and the belt surface so that the empty bag can be transferred onto the supply slide plate 61. The shaft member 46 has a pressing roller 5
3 is rotatably supported, and a guide belt 54 is wound around the pressing roller 53. The guide belt 54 is also
It can be pressed against the roller surface of the bag pulling roller 41.
The oscillating arm 44 oscillates the bag pressing belt 51 and the guide belt 54 between a pressure contact position where they are in pressure contact with the roller surface of the bag pulling roller 41 and a spaced position where they are separated from the roller surface.

As shown in FIGS. 1 and 4, the upper end of the supply slide plate 61 is supported by the gate post member 21 via a bracket 62 so that its inclination can be adjusted. A height regulating vacuum device 63, an empty bag lateral regulating device 64, a bag height regulating device 65, and the like are provided on the supply slide plate 61. Supply slide plate 6
A drive cylinder 66 is connected to the center of the vertical direction of 1, and an output rod of the drive cylinder 66 is connected to the gate post member 21.

Next, the operation of the present invention will be described. Empty bags are stacked on the conveyor slats 16 at predetermined intervals. The pair of bag side surface guides 17 are applied to the side edges of the stacked empty bags and can be guided in the front-rear direction. Further, the deviation preventing metal member 18 fixed to the conveyor slat 16 prevents the empty bag from being displaced even during transfer. Furthermore, the front guide 19 provided upright on the frame 10 of the empty bag feeder guides the empty bag while aligning the bottom edges thereof. The conveyor slat 16 stops when the pair of bag side surface guides 17 moves to the empty bag pull-out position, and starts when all the empty bags are pulled out. When the air cylinder body 31 is driven and the suction pad 34 is lowered from the raised position to the lowered position, the suction pad 34 is sucked onto the bottom edge of the uppermost empty bag. When the air cylinder body 31 is driven again, the suction pad 34 rises from the lowered position to the raised position, and the empty bag is sucked up to the pulling position. At this time, the pair of guide rods 33a is vertically guided by the guide rods 33a.

When the empty bag is sucked up to the pulling position, a position sensor (not shown) detects this, the drive cylinder 36 operates, the air cylinder body 31 swings forward, and a plurality of suction pads 34 are used. The empty bag is pulled out while being adsorbed, and the empty bag is pulled out from the pull-up position to the insertion position.
The bag pulling roller 41 is rotated counterclockwise in FIG. 1 by the drive motor 42, and the bag holding belt 51 driven by the bag pulling roller 41 is rotated clockwise. The empty bag pulled out to the insertion position is pulled into the bag pulling roller 41. The drawn empty bag is sandwiched by the roller surface of the bag drawing roller 41 and the belt surface of the bag pressing belt 51. The bag pressing belt 51 is driven by the frictional force from the sandwiched empty bag, and the empty bag is driven by the bag pulling roller 4
It is pressed onto the roller surface of No. 1 and reliably delivered to the upper end of the supply slide plate 61. At this time, the bag pressing belt 51 moves the empty bag along the roller surface of the bag pulling roller 41 to the feeding slide plate 6.
It is held until it is delivered to 1, so that the empty bag does not meander and it is possible to prevent wrinkles from occurring in the empty bag. Further, since the guide belt 54 guides the empty bag while pressing it against the roller surface side of the bag pulling roller 41,
It is possible to more reliably prevent the meandering and wrinkling of the empty bag. Further, when the bag pulling roller 41 is rotated to feed the opening edge of the empty bag and pass through between the bag pulling roller 41 and the bag pressing belt 51, the empty bag comes to slide down on the supply slide plate 61, Thereby, the empty bag can be transferred onto the supply slide plate 61.

When the bag pressing belt 51 is in the pressure contact position where it is pressed against the bag pulling roller 41, it becomes necessary to take out an empty bag sandwiched between the roller surface of the bag pulling roller 41 and the bag pressing belt 51. In this case, the swing arm 44 is swung to swing the bag pressing belt 51 to the separated position to widen the gap between the roller surface of the bag pulling roller 41 and the bag pressing belt 51, and then the empty space. Just take out the bag. In the above-described embodiment, the bag pressing belt 51 has two, but
By setting the number of the bag pressing belts 51 to three or more and appropriately changing the belt width of the bag pressing belt 51, the characteristics such as the material and hardness of the empty bag to be conveyed can be dealt with.

[0018]

According to the empty bag feeding device of the bag filling machine according to the present invention, the bag pressing belt can be pressed against the roller surface of the bag drawing roller, and the roller surface of the bag drawing roller and the bag pressing belt. The empty bag is sandwiched by the belt surface of the bag so that it can be transferred onto the feeding slide plate, and the empty bag can be held along the roller surface of the bag pulling roller for as long as possible to prevent the empty bag from meandering. It is possible to prevent the occurrence of wrinkles and prevent the occurrence of wrinkles, and improve the bagging workability.

[Brief description of drawings]

FIG. 1 is a side view of an empty bag supply device of a bag filling machine showing an embodiment of the present invention.

FIG. 2 is a rear view of the empty bag supply device of the bag filling machine showing the embodiment of the present invention.

FIG. 3 is a partial front view of the empty bag supply device of the bag filling machine showing the embodiment of the present invention.

FIG. 4 is a view on arrow IV in FIG. 1.

5 is a partially enlarged view of FIG.

6 is a view on arrow VI in FIG.

[Explanation of symbols]

 10 ... Frame of empty bag feeder 11 ... Drive shaft 12 ... Driven shaft 13 ... Electric motor 14, 15 ... Sprocket 16 ... Conveyor slat 17 ... Bag side guide 18 ... Misalignment prevention metal fitting 19 ... Front guide 20 ... Frame 21 ... Gate post member 22 ... Upper frame 23 ... Middle frame 30 ... Bag withdrawing mechanism 31 ... Air cylinder body 32 ... Floating joint 33 ... Mounting plate 34 ... Adsorption pad 35 ... Roller support bracket 36 ... Drive cylinder 37 ... Joint member 38 ... Cylinder pin 40 ... Bag Loading / unloading mechanism 41 ... Bag pulling roller 42 ... Drive motor 43 ... Pivot 44 ... Swing arm 45, 46, 47 ... Shaft member 51 ... Bag pressing belt 52 ... Belt roller 53 ... Pressing roller 54 ... Guide belt 61 ... Supply sliding plate

Claims (3)

[Claims] 1. A bag-filling machine which is adapted to pull out stacked empty bags while adsorbing them by a plurality of suction pads and slide down and supply them onto a supply slide plate of an inclined surface on the supply side of the bag-filling machine. In the empty bag supply device, a bag pulling roller is disposed adjacent to the upper end of the feeding slide plate, and can be pressed against the roller surface of the bag pulling roller.
An empty bag supply device for a bag filling machine, wherein a bag pressing belt is arranged so that the drawn empty bag is sandwiched between the roller surface and the belt surface and can be transferred onto the supply slide plate. 2. A bag filling machine in which stacked empty bags are pulled out while being sucked by a plurality of suction pads and are slid down and fed onto a supply slide plate on an inclined surface which is the supply side of the bag filling machine. In the empty bag supply device, an empty bag is pulled up from the inside of the cassette box by a suction pad, and the empty bag is moved by swinging the suction pad and transferred to the bag packing machine side, and the bag. And a bag loading / unloading mechanism for drawing the empty bag transferred from the drawing mechanism and sending the empty bag onto the supply sliding plate, the bag loading / unloading mechanism being arranged adjacent to the upper end of the supply sliding plate. A roller and a roller surface of the bag-drawing roller that can be pressed against each other so that the drawn empty bag can be sandwiched between the roller surface and the belt surface and can be transferred onto the supply slide plate. The bag holder that has been placed And a pressing surface and a roller surface for winding the bag pressing belt around a pair of belt rollers and pressing the bag pressing belt against the roller surface of the bag pulling roller through the pair of belt rollers. An empty bag supply device for a bag filling machine, which is swingably supported at a separation position spaced apart from. 3. The empty bag supply device for a bag filling machine according to claim 1, wherein the bag pressing belt is a driven belt that is driven by the bag pulling roller which is a driving roller.