JPH07257516A - Empty bag feeding device of empty bag feeding machine - Google Patents

Abstract

PURPOSE:To accurately take out empty bags one by one from the upper part of a cassette case in which empty bags are contained add effectively supply them to a slide plate side for supplying. CONSTITUTION:Empth bags 1 are drawn out while being sucked by a plurality of suction pats 2 at the bottom la of the empty bag 1 in a cassette case A and fed to a supplying slide plate 3 on a slope at the supply side of a bagging device. And a bag-setting plate 4 which is positioned at the nearly same level with the initial sucking position of the suction pat 2 and which can be vertically moved together with the suction pat 2, is provided at the nearby position approaching from the suction pat 2 to the opening 1b of an empty bag 1 and a short feeding auxiliary belt 6 which is vertically movable at the front end and a wide long feeding belt 7 are disposed so as to reversely rotate opposite to each other, at the upper and lower sides between the delivery roller 5 attached to a shaft at the upper end side of the slide plate 3 and the cassette case A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an empty bag supplying device for an empty bag supplying machine which can take out one by one from the upper side of a cassette box in which an empty bag group is loaded and can effectively supply the empty bag to the supply slide plate side.

[0002]

2. Description of the Related Art Conventionally, the bottom side of an empty bag in a cassette box is pulled out while being sucked by a plurality of suction pads, and can be supplied onto a supply slide plate of an inclined surface which is the supply side of a bag filling device. In the empty bag feeder, for example, Japanese Utility Model Publication No. 61-28721 and Japanese Utility Model Publication No. 63-534.
As can be seen in the publication, the feeding device that feeds the uppermost bag onto the feeding slide plate by the pressing roller and the feeding roller while dragging the uppermost bag by the suction pad that is attracted to the bottom of the uppermost empty bag loaded in the cassette box Are known.

[0003]

However, since the adsorption pad simply moves downward to adsorb an empty bag, the adsorption pad may cause friction between the uppermost bag and the next bag, static electricity, and air (vacuum) conditions. Two sheets were taken and the next empty bag was misaligned, and the empty bag taken out by the suction pad was just taken in by the pressing roller and the sending roller and sent out, so the empty bag was twisted, the cassette In the case where there was a positional deviation on the box side, there was a problem that a feeding error occurred and the empty bag supply performance was not very good.

In addition to such a problem, the performance of sending out empty bags grouped in the cassette box while taking them out one by one with the suction pad is not good.
Such problems have not been solved yet.

[0005]

The first object of the present invention is to:
By solving such problems, it is possible to reliably take out empty bags one by one from the cassette box and accurately send them to the slide plate side. Therefore, the position near the opening side of the empty bag from the suction pad. Is equipped with a bag pressing plate that can move up and down together with the suction pad at approximately the same height as the suction start position of the suction pad. , A short feeding auxiliary belt whose front end can move up and down and a wide long feeding belt are arranged so as to be reversed with respect to each other.

A second object of the present invention is to prevent two empty bags from being picked up by the suction pad. Therefore, the suction pad is provided on the opposite side of the bag pressing plate in the vicinity of the suction pad. It is configured by equipping a front bag pressing plate that is approximately the same height as the pad.

A third object of the present invention is to enable the bag to be effectively held before and after the suction pad. Therefore, the bag holding plate and the front bag holding plate are formed as narrow and horizontally long flat plates. Is.

A fourth object of the present invention is to make it possible to effectively move an empty bag in a cassette box up and down. Therefore, the cassette box is moved up and down by a fixed guide frame around 4 and an air cylinder. It is composed of a bottom plate and an empty bag detection sensor.

A fifth object of the present invention is to enable effective level control of the upper end of an empty bag in a cassette box. Therefore, a photoelectric sensor for empty bag confirmation is provided on the upper part of the cassette box. It is composed.

A sixth object of the present invention is to enable loading in a cassette box so that the uppermost surface of a flat-stacked empty bag whose bottom side becomes thick becomes flat.
The bottom plate of the empty bag is supported on one end side of the bottom plate in the cassette box, and a bendable support plate is continuously connected to press the upward pressure force.

A seventh object of the present invention is to make it possible to adjust the support plate so as to adapt to the thickness of the bottom of the empty bag group which is stacked flatly. This is configured by attaching a balance weight that can adjust the movement and can apply upward pressing force.

An eighth object of the present invention is to make it possible to speed up the movement of the empty bag from above the cassette box to above the delivery belt, so that between the upper part of the cassette box and the upper part of the delivery belt. Is equipped with front / rear approach confirmation sensors capable of detecting the position of the support portion of the suction pad moving between them.

[0013]

Therefore, when the bottom side of the empty bag is taken out upward while the suction pad sucking on the bottom of the uppermost bag in the cassette box is moved upward, the upper surface of the empty bag near the opening side near the suction pad is closed. By pressing the bag holding plate,
It is possible to effectively take out two empty bags and the next empty bag without shifting, and even if the empty bag taken out is twisted or misaligned on the cassette box side, it can be stably fed onto the delivery belt. With the feeding auxiliary belt that can move the tip side up and down, the empty bag can be taken in order as it is without turning and can be effectively fed to the slide plate side for supply.

By attaching the front bag pressing plate, it is possible to flatten the bag so that the bags can be moved in an orderly manner while pressing the bottom end of the empty bag with the front bag pressing plate during suction by the suction pad.

By making the bag pressing plate and the front bag pressing plate a narrow and laterally long flat plate, the empty bag can be accurately pressed in a flat shape so as not to bend in the lateral width direction.

If the bottom plate in the cassette box can be moved up and down by an air cylinder, even if the empty bag is loosely fed into the cassette box, the bottom plate rises and the empty bag is neatly arranged above the take-out side in the guide frame. Since it can be raised, the empty bag detection sensor can effectively detect the empty bag in the box.

By equipping the upper part of the cassette box with a photoelectric sensor for checking an empty bag, the sensor can detect the level of the uppermost bag in the cassette box, so that the suction pad can be easily sucked and the take-out cylinder can be used. Since the stroke of is short, the speed of climb is increased, and the level can be effectively controlled.

Since the flexible support plate is connected to one end of the bottom plate in the cassette box, the support plate is inclined to the thick bottom of the empty bag group stacked flat on the bottom plate. However, the uppermost bag can be flattened so that the suction pads can easily adsorb, and when the number of empty bags decreases, the support plate is pressed upward and the uppermost bag is always inclined. You can lift the bottom of the entire empty bag while making changes.

When the balance weight is movably attached to the lower surface of the support plate, the balance weight can be moved and adjusted so that a pressing force adapted to the thickness of the bottom of the empty bag group can be applied.

By making it possible to detect the position of the support portion of the suction pad by the front and rear approach sensors, the suction pad speeds up the movement time of sucking an empty bag from the cassette box and feeding it to the feeding belt. Therefore, the workability can be further improved.

[0021]

FIG. 2 is a side view schematically showing an empty bag feeder, in which two parallel rails 19 and 19 are fixedly installed on the upper portion of a support base 18 which is elongated in the lateral direction, and two cassette boxes A, The four rolling wheels 21 suspended from the support frame 20 supporting A are placed on both rails 19 and 19, and the cassette box moving cylinder 22 allows both cassette boxes A and A to move laterally. A cassette box fixed position limit switch 23 is provided at an intermediate portion in the lateral direction of the support base 18, and a cassette box elevating air cylinder capable of extending above the support base 18 at the center position of the central portion of the support base 18 in the horizontal direction. 10 is installed upright.

In the two cassette boxes A, A, the lower portions of the vertical guide frames 9 arranged around the empty bag 1 can be fixedly mounted on the support frame 20, respectively.
A support frame plate 24 is fixed below the horizontal bottom plate 11 fitted inside each guide frame 9, and the push-up plate 10a at the upper end portion of the air cylinder 10 is applied to the bottom surface of the support frame plate 24 so that the bottom plate is supported. 1
1 is constructed so that it can be moved up and down, and an empty bag detection sensor 12 is provided at the bottom of both cassette boxes A, A, and a light emitting element and a light receiving element are provided on both upper sides of both cassette boxes A, A. Each is equipped with a photoelectric sensor 13 for empty bag confirmation.

A tip portion 14a is erected upward at one end of the bottom plate 11 and a base portion of a support plate 14 on which the bottom portion 1a side of the empty bag 1 can be placed can be bent via hinges 25, 25. The balance weights 15 and 15 which are pivotally attached to the base plate 14 and extend from the lower surface of the support plate 14 to the lower part of the bottom plate 11 and which can be adjusted by fixing with set bolts 27 are attached to the tips of the arms and 26, respectively. Although the support plate 14 can be pressed and urged upward by the weight of the balance weight 15, the movement of the balance weight 15 may be adjusted by an actuator such as a motor.

A spring or the like may be used as a means for urging the pressing force upward with respect to the support plate 14.

The support base 1 is located in front of the center of the support base 18.
A supply support base 28 higher than 8 is continuously provided, and a separating device 29 for the empty bag 1 is provided above the rear part of the supply support base 28 approaching the front end side of the cassette box A in the central position. On the front side, a supply slide plate 3 which is a supply side of a bag packing device (not shown) and whose tilt can be adjusted by a tilt cylinder 30 is obliquely provided. The slide plate 3 has a height regulating vacuum device 31, an upper sensor. 32, an empty bag lateral restricting device 33, a lower sensor 34, a bag height restricting device 35, and the like.

Above the supply support base 28, the sliding plate 3 is provided.
A long feeding belt 7 that is wide and extends horizontally from above the upper end of the feeding device to a position in the vicinity of the separating device 29 and is driven by a motor 36 is provided.
One delivery roller 5a and two delivery rollers 5 which are driven to rotate in the opposite direction to the delivery belt 7 are arranged side by side, and two short delivery auxiliary belts are provided from the shaft portion 37 of the delivery roller 5a. 6 is extended above the delivery belt 7, and both feed auxiliary belts 6, 6 are provided.
The lower portion of the upper feeding auxiliary cylinder 39 is connected to the intermediate portion of the support body 38 that connects the distal end portions of the
By the operation of 9, the both feeding auxiliary belts 6, 6 become
It is provided so that the tip can be changed by tilting by pivoting to the center and moving up and down, and a return confirmation switch 40 is provided in the vicinity of the cylinder 39.

In the upper direction of the cassette box A at the central position, three suction pads 2 capable of adsorbing and moving up the bottom 1a side of the empty bag 1 in the cassette box A are installed. The support frame body 16a of the support portion 16 supporting the pad 2 is provided so as to be movable back and forth along the rails 41 on both sides by the bag difference cylinder 42, and an L-shaped rear view is formed below the lower portion of the support frame body 16a. The supporting frame body 43 is vertically movably installed by the guide of the two guide rods 44 and the expansion and contraction of the bag lifting cylinder 45, and both supporting pieces 49 and 49 vertically hung from the supporting frame plate 43 rotate both. The bases of the arms 46, 46 are pivotally attached, and the three suction pads 2 are attached to a pad support plate 47 connected between the tip ends of the two rotary arms 46, 46, and the side of the support frame plate 43 is provided. A bag between the upper part and one rotating arm 46 And configure interposed raised spikes cylinder 48.

At a position near each suction pad 2 toward the opening 1b side of the empty bag 1, the width of the suction pad 2 is substantially the same as the suction start position, and the bag holder is made of a horizontally wide flat plate. The plate 4 is fixed to the lower end portions of both the support pieces 49, 49, and at a position near each suction pad 2 on the opposite side of the bag pressing plate 4, the height is substantially the same as the suction pad 2 and the width is narrow. The front bag pressing plate 8 made of a horizontally long flat plate is attached to the pad supporting plate 47.
However, the bag pressing plate 4 and the front bag pressing plate 8 may be divided so as to correspond to the suction pads 2 or may be attached so as to be slightly collapsed in the lateral direction.

Further, forward and backward confirmation sensors 50a and 50b are provided in the vicinity of the bag difference cylinder 42, and between the upper part of the cassette box A and the upper part of the delivery belt 7, the moving parts are provided. Front / rear approach confirmation sensors 17a and 17b capable of detecting the position of the support portion 16 are provided and configured.

Therefore, as shown in FIG. 5, each suction pad 2 is sucked to the bottom 1a side of the uppermost empty bag 1 in the cassette box A by moving it downward by the bag lifting cylinder 45, and then
As shown in FIG. 7, when the bag lifting assisting cylinder 48 is operated to take out the bottom portion 1a side of the empty bag 1 upward, the upper surface of the empty bag 1 near the opening 1b which is in the vicinity of each suction pad 2 is removed. Since it is pressed by the bag pressing plate 4, two pieces are taken or the next empty bag 1
It can be effectively taken out without slipping, and the empty bag 1 taken out by each suction pad 2 is
If the empty bag 1 is moved while being lifted by the bag lifting cylinder 45 and the empty bag 1 is twisted or misaligned on the cassette box A side, the bag can be stably supplied onto the delivery belt 7. , The feeding auxiliary belts 6, 6 which can be moved up and down by the feeding auxiliary cylinder 39 to incline the empty bag 1 without turning it up, and the sliding plate 3
Can be effectively sent out to the side and supplied.

When the front bag pressing plate 8 is attached, as shown in FIG. 7, the front bag pressing plate 8 holds the front side of the bottom portion 1a of the empty bag 1 when the suction pad 2 sucks and lifts the bag. It can be flat so that the movement of the can be done in an orderly manner.

When the bag pressing plate 4 and the front bag pressing plate 8 are made of narrow and horizontally long flat plates, the empty bag 1 can be accurately pressed flat so as not to bend in the width direction.

When the bottom plate 11 in the cassette box A is moved up and down by the air cylinder 10, even if the empty bag 1 is loosely fed into the cassette box A, the bottom plate 11 is lifted and the guide frame 9 is raised.
It is possible to raise the empty bag 1 inside the box in an orderly manner, and the empty bag detection sensor 12 can effectively detect the empty bag 1 in the box.

If an empty bag confirmation photoelectric sensor 13 is provided on the upper part of the cassette box A, the sensor 13 can detect the level of the uppermost empty bag 1 in the cassette box A.
The suction pad 2 can be accurately sucked, and the speed can be increased to effectively control the level.

When a foldable support plate 14 which is biased upward is continuously provided on one end side of the bottom plate 11 in the cassette box A, as shown in FIG. It is possible to flatten the uppermost stage so that the suction pads 2 can be easily sucked while the indicator plate 14 is tilted and receives the bottom portion 1a side of the thickened empty bag group 1 which is thickened, as shown in FIG. Also, as shown in FIG. 10, when the number of empty bags 1 becomes small, the support plate 14 is pressed upward, and the uppermost empty bag 1 is always tilted so that the empty bag 1 is flat and the empty bag 1 becomes empty.
This makes it possible to lift the entire bottom plate 1a side.

A balance weight 15 is provided on the lower surface of the support plate 14.
Is attached so that it can be moved and adjusted, so that a pressing force adapted to the thickness of the bottom 1a side of the empty bag group 1 can be applied,
The balance weight 15 can be moved and adjusted.

The support 16 of the suction pad 2 is moved forwards.
When the rear approach confirmation sensors 17a and 17b can detect the suction pad 2, the suction pad 2 will move from the cassette box A to the empty bag 1.
It is possible to speed up the time of movement for adsorbing and feeding on the delivery belt 7, and it is possible to further improve workability.

[0038]

As described above, according to the present invention, the cassette box (A) is provided.
Bottom part (1a) of the empty bag (1) while moving up the adsorption pad (2) adsorbing to the bottom part (1a) side of the uppermost empty bag (1)
When the side is taken out upward, the upper surface of the empty bag (1) near the opening (1b) near the suction pad (2) is pressed by the bag pressing plate, so that two sheets can be taken or the next empty bag. Even if the empty bag (1) taken out is kinked or the cassette box (A) side is misaligned, it can be taken out effectively on a wide delivery belt (7). With the feeding auxiliary belt (6) that can stably feed it and can move the tip side up and down, the empty bag (1) can be taken in neatly and sent out satisfactorily without turning the empty bag (1). The removal from the box (A) and the delivery to the sliding plate (3) side can be effectively performed with good performance.

When the front bag pressing plate (8) is attached to a position near the suction pad (2), the front end side of the bottom portion (1a) of the empty bag (1) is sucked by the suction pad (2) and pulled up. Since it can be flattened while being pressed by the pressing plate (8), it can be smoothly fed onto the feeding belt (7) and can be fed well below the feeding assist belt (6). You can

When the bag pressing plate (4) and the front bag pressing plate (8) are made of narrow and horizontally long flat plates, the empty bag (1) can be effectively pressed in a flat shape so as not to bend in the width direction. it can.

When the bottom plate (11) in the cassette box (A) can be moved up and down by the air cylinder (10), even if the empty bag (1) is loosely supplied in the cassette box (A),
By raising the bottom plate (11), it is possible to raise the empty bag (1) in the guide frame (9) in an orderly manner to the upper side of the take-out side, and the empty bag detection sensor (12) causes the empty bag ( 1) can be detected effectively.

If an empty bag confirmation photoelectric sensor (13) is provided on the upper part of the cassette box (A), the sensor (13) can detect the level of the uppermost empty bag (1) in the cassette box (A). Thus, the level can be effectively controlled by facilitating the adsorption of the adsorption pad (2) and further speeding up.

A foldable support plate (1) biased upward by one end of the inner bottom plate (11) of the cassette box (A).
4) in series, the thick bottom (1a) side of the empty bag (1) group stacked flat on the bottom plate (11) is attached to the support plate (1).
4) The uppermost empty bag (1) can be flattened so that the suction pad can be easily sucked while the bottom of the empty bag (1) is inclined and the bottom is supported. The plate (14) is pressed upward, and the bottom (1a) side of the empty bag (1) can be effectively lifted while changing the inclination so that the uppermost empty bag (1) is always flat.

When a balance weight (15) for urging a pressing force upward is attached to the lower surface of the support plate (14) so as to be movable and adjustable, the movement adjustment adjusts the bottom portion (1a) of the empty bag (1) group. A pressing force adapted to the thickness can be applied to the support plate (14).

When the movement of the support portion (16) of the suction pad (2) can be detected by the front / rear approach sensors (17a), (17b), the suction pad (2) is emptied from the cassette box (A). It is possible to speed up the movement time of sucking the bag (1) and supplying it to the delivery belt (7), and further improve the workability.

[Brief description of drawings]

FIG. 1 is a side view schematically showing a main part of an embodiment of the present invention.

FIG. 2 is a side view schematically showing an empty bag feeder.

FIG. 3 is a rear view schematically showing a right side surface of a part of FIG.

FIG. 4 is a plan view schematically showing a part of FIG.

FIG. 5 is a side view showing a part of FIG. 1 in an enlarged manner.

FIG. 6 is a rear view showing a part of FIG. 3 in an enlarged manner.

FIG. 7 is an operation explanatory view showing the operation state of FIG. 5;

FIG. 8 is an operation explanatory view shown in a part of FIG.

9 is an operation explanatory view showing an operation state of FIG. 8. FIG.

FIG. 10 is an operation explanatory view showing the operation state of FIG. 9;

[Explanation of symbols]

 A cassette box 1 empty bag 1a bottom 1b opening 2 suction pad 3 slide plate 4 bag pressing plate 5 feeding roller 6 feeding auxiliary belt 7 feeding belt 8 front bag pressing plate 9 guide frame 10 air cylinder 11 bottom plate 12 empty bag detection sensor 13 empty Bag confirmation photoelectric sensor 14 Support plate 15 Balance weight 16 Support part 17a Front approach confirmation sensor 17b Rear approach confirmation sensor

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location B65H 3/54 310 B 8712-3F

Claims (8)

[Claims] Claims: 1. The bottom (1a) side of the empty bag (1) in the cassette box (A) is pulled out while being sucked by a plurality of suction pads (2), and the inclined surface serving as the supply side of the bag filling device is supplied. In an empty bag feeder configured to be able to supply onto the slide plate (3) for suction, a suction pad (2) is provided at a position near the opening (1b) side of the empty bag (1) from the suction pad (2). Is equipped with a bag pressing plate (4) which can move up and down together with the suction pad (2) at substantially the same height as the suction start position, and the feed roller (5) axially mounted on the upper end side of the sliding plate (3) and the cassette. A short feeding auxiliary belt (6) whose front end is vertically movable and a long feeding belt (7) which are wide and long are arranged so as to be reversed from each other above and below the box (A). Empty bag feeder for empty bag feeder. 2. A front bag pressing plate (8) having substantially the same height as said suction pad (2) is provided in the vicinity of said suction pad (2) on the opposite side of said bag pressing plate (4). Claim 1
An empty bag feeder of the empty bag feeder described. 3. The empty bag feeding device for an empty bag feeding machine according to claim 2, wherein the bag pressing plate (4) and the front bag pressing plate (8) are narrow and horizontally long flat plates. 4. The cassette box (A) comprises a fixed four guide frame (9), a bottom plate (11) which is vertically moved by an air cylinder (10), and an empty bag detection sensor (12). The empty bag supply device of the empty bag supply machine of 1, 2 or 3. 5. An empty bag supply device for an empty bag feeder according to claim 1, 2, 3 or 4, wherein a photoelectric sensor (13) for empty bag confirmation is provided on the upper part of the cassette box (A). 6. A foldable support plate capable of supporting the bottom portion (1a) side of the empty bag (1) at one end side of the inner bottom plate (11) of the cassette box (A) and biasing upward with a pressing force. (14)
An empty bag supply device for an empty bag supply machine according to claim 1, 2, 3, 4, or 5, wherein the empty bag supply device is provided in series. 7. The supporting plate (1) is provided on the lower surface of the supporting plate (14).
7. A balance weight (15), which is adjustable in movement and is capable of exerting upward pressing force, is attached to 4).
An empty bag feeder of the empty bag feeder described. 8. Front / rear approach confirmation capable of detecting the position of the support portion (16) of the suction pad (2) moving between the cassette box (A) and the delivery belt (7). The empty bag supply device for an empty bag supply machine according to claim 1, 2, 3, 4, 5, 6 or 7, wherein sensors (17a) and (17b) are provided.