JPH05193764A - Bag body feeding device - Google Patents

Abstract

PURPOSE:To perform reliable delivery of bag bodies one by one despite of the structure of the bag body. CONSTITUTION:When a plurality of bag bodies 12 or 13 are conveyed by means of a first belt conveyor 22, a second belt conveyor 23 is driven and a specified amount of the bag bodies are taken out in one lot by means of a push-out protrusion 23d. The bag bodies are slipped down over the slope of a discharge part 25 and fed to the rotary table 29b of a moving part 29, and the tip parts thereof are trued by means of a positioning part 29c. When the rotary table 29b is lifted, a topmost bag body raised togetherwith the rotary table is sucked by means of a sucking member 31. The bag bodies are delivered from the sucking member 31 to a delivery arm 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag feeding device for feeding a bag to a packaging device or the like one by one.

[0002]

2. Description of the Related Art FIG. 7 shows a conventional example of a packaging device 11 for filling a bag with medical supplies, foods, etc. and a bag supply device 1 for supplying the bags one by one to the packaging device. The bag body supply device 1 shown in the figure includes a bag body replenishing section 3 that holds a plurality of bag bodies 2 in a vertically stacked state, a drive mechanism 4 that raises and lowers the bag body replenishing section 3, and the bag. The bag body 2 arranged above the body supply section 3 and stacked on the bag body supply section 3
Limit switch 5 for detecting
An adsorption member 7 for adsorbing and lifting and a delivery arm 6 are provided.

A base end of the delivery arm 6 is swingably supported on a shaft 6c. Further, a pair of holding claws 8a and 8b which are opened and closed with shafts 6a and 6b as fulcrums are provided at the tip of the transfer arm 6, and the bag body 2 sucked and lifted by the suction member 7 is held by the pair of holding claws. It is sandwiched at the position (b) by the claws 8a and 8b. When the delivery arm 6 rotates clockwise, the bag body 2
Is lifted to the delivery position with the packaging device side shown in (a). On the packaging device 11 side, a pair of holding claws 9a and 9b is provided.
And a delivery arm 6 is provided.
Thus, the bag body 2 lifted to the position (a) is held by the holding claws 9a and 9b, and then the holding member 9 is sent to the position shown in (c). At this position, the bag body 2 is
It is held from both sides by the holding claws 10a of the turning arm 10. Thereafter, on the packaging device 11 side, the bag body 2 is sent to each stroke position by the turning of the turning arm 10, and the bag mouth is opened, the contents are supplied, and the bag mouth is sealed.

[0004]

In the bag feeding device 1 shown in FIG. 7, the bag replenishing section 3 is gradually lifted by the drive mechanism 4 so that the uppermost bag 2 can be sucked by the suction member 7. Is supplied to. Therefore, in order for the uppermost bag body 2 to be reliably sucked by the suction member 7, the replenishment unit 3
The bag body must be orderly stacked on the top of the bag, and the upper surface of the uppermost bag body 2 must be substantially horizontal. for that reason,
The bag body laminated on the elevation type replenishment section 3 is limited to one having a uniform thickness as a whole.

However, the bag body 2 supplied to the packaging device 11
Among them, there are those having the structures shown in FIGS. 8A and 8B and FIGS. 10A and 10B. In the bag body 12 shown in FIGS. 8A and 8B, one end 12b is opened, a zipper 12a is formed at the other end, and a portion indicated by a hatching 12c is sealed. In addition, FIG.
The bag body 13 shown in (B) has one end 13b opened,
A foldable bottom portion 13a is formed at the other end portion, and the periphery shown by hatching 13c is sealed. When such bags 12 and 13 are stacked on the bag replenishing unit 3 having the above structure, the zipper 12a and the foldable bottom 13a are formed. Overlap at the same place, and the stacking height of that part becomes higher than the other part, so that the stacked bag bodies not only incline to one side as shown in FIGS. 9 and 10 but also the other end part. Sign B
Misalignment occurs in the portion indicated by or. Such a phenomenon becomes more remarkable as the number of laminated bag bodies increases.

As shown in FIGS. 9 and 10, the bag 12 is
When 13 or 13 is stacked on the lifting type replenishing unit 3, not only the bags cannot be aligned, but also the portion where the suction member 7 contacts is inclined, and the suction members 7 take out the bags one by one from the top. Can not be.

[0007] Therefore, an object of the present invention is to provide a bag body supply device capable of surely delivering the bag bodies one by one regardless of the structure of the bag body.

[0008]

A bag supply device according to the present invention comprises a bag replenishing section to which a plurality of bags are arranged and sent on a substantially horizontal plane, and a part of the bag replenishing section. A take-out section for taking out a plurality of bags at one time, a moving section arranged so as to be slanted so that the plurality of bags taken out by the take-out section, and tips of the plurality of bags slid down to the moving section When the positioning part which is hit by the moving part and the moving part are lifted upward from the tilted posture,
It is characterized in that it is provided with a delivery section for delivering the sheets one by one to the next step.

[0009]

In the above means, when a plurality of bags are replenished one after another by the replenishing unit, a plurality of the bags are taken out at once by the take-out unit and are inclined at the feeding unit. A plurality of bags are slid on the moving part and taken out. Then, the tips of the slid-off bag bodies come into contact with the positioning portions, and the tips of the respective bag bodies are aligned. Next, the moving part is lifted from the tilted posture, and the uppermost one of the bags lying on the moving part is drawn out by being sucked by the suction member.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. 1 and 2 are partial front views showing the configuration of a bag body supply device 20 as one embodiment, and FIG. 3 is a plan view of the bag body supply device shown in FIG. Reference numeral 22 is a first belt conveyor provided as a bag replenishing unit. The first belt conveyor 22 includes two belts 22c and 22c between the drive pulleys 22a and 22a and the driven pulleys 22b and 22b.
Is multiplied by. The drive pulleys 22a, 22a are driven by a motor (not shown), and thereby the plurality of bags 12 or 13 are sent in the B direction. Belt 22c,
A limit switch 24 is provided in the middle of the left side of 22c in the figure, and its actuator 24a projects above the belt. When the bag 12 or 13 is not detected by the limit switch 24, the belts 22c, 22c
Thereby, the bag body 12 or 13 is conveyed in the B direction.

A second belt conveyor 23, which functions as a take-out section for taking out a plurality of bags at a time, is provided between the belts 22c and 22c of the first belt conveyor 22. This belt conveyor 23 is one in which a belt 23c is hung between a drive pulley 23a and a driven pulley 23b, and as shown in FIG. 1, a pushing protrusion 23d is provided at one place on the outer circumference of the belt 23c. It is provided. The shaft 23e of the drive pulley 23a and the shafts 22 of the driven pulleys 22b and 22b of the first belt conveyor 22.
The shaft 23e of the drive pulley 23a is driven by a motor 26 via a drive belt 27, which is separate from d and 22d. This driving force drives the belt 23c counterclockwise in FIG. 1 only once, and at this time, the pushing protrusions 23d take out a plurality of bags 12 or 13 at one time in the left direction in the drawing.

The plurality of bags 12 taken out by the second belt conveyor 23 slide and fall along the inclined discharge path 25. A shutter denoted by reference numeral 28 is provided in the middle of the discharge path 25. Therefore, the bag body 12 that has dropped along the discharge path 25 is temporarily stopped in the middle of the discharge path 25 by the shutter 28. Further, the shutter 28 has a shaft 28a.
When the bag 12 is rotated clockwise from the position shown in the figure to the posture shown in (d), the bag body 12 stopped here slides further downward along the discharge path 25.

A moving part 29 is arranged on the lower left side of the discharge path 25. The moving unit 29 is provided with a rotating table 29b which is attached so as to be rotatable about a shaft 29a between a position shown in (e) and a position shown in (f).
A limit switch 30 arranged below the rotating table 29b is provided. This limit switch 30
The actuator 30a of the above is projected on the upper surface of the rotating table 29b. At the open end of the rotating table 29b, the bag body 12 slid down on the rotating table 29b.
Alternatively, a positioning portion 29c for aligning the tips of 13 is integrally formed.

The limit switch 30 detects that the bag 12 or 13 is not present on the rotary table 29b. When the bag 12 or the like is not detected by the limit switch 30, the shutter 28 is rotated. The plurality of bags 12 or 13 stopped here
Falls on the turntable 29b. A transfer unit 49 is provided above the moving unit 29. In the delivery section 49,
A pair of suction members 31 and 31 (one is shown in the drawing) that sucks the one stacked on the uppermost part of the plurality of bags 12 or 13 placed on the rotating table 29b rotated to the position (f). No) is provided.

The suction member 31 includes a rotating bracket 34.
The rotary bracket 34 is rotatable about the shaft 32 between an angle (g) and an angle (g) shown in FIG. When the rotating bracket 34 is rotated by the angle indicated by (h), the suction member 31 moves to a position where the uppermost bag 12 or 13 placed on the rotating table 29b can be sucked. A vacuum pump (not shown) is connected to the suction member 31, and the bag 12 or 13 can be sucked by the negative pressure generated by the vacuum pump.

Shaft 2 to which the rotary table 29b is fixed
A link 33 is fixed to 9a, and each of the link 33, the rotating bracket 34, and the arm 3 of the drive link 38 is fixed.
8a is connected by rigid rods 35 and 37. A drive rod 36 is connected to the other arm 38b of the drive link 38, and the drive rod 36 is driven by a drive mechanism on the packaging device 11 side. By the link mechanism, the suction member 31 and the rotary table 29b are provided.
Are driven in synchronization with the packaging device 11 side.

That is, when the rotation bracket 34 supporting the suction member 31 is tilted at the angle shown in FIG.
The rotating table 29b is rotated to the position shown in (f) in the figure so that the bag 12 or 13 can be sucked by the suction member 31. Further, as shown in FIGS. 1 and 2, when the rotary table 29b is returned to the position shown by (e),
The rotating bracket 34 is rotated at the angle (g) shown in FIG. 2, and the uppermost bag 12 or 13 is sucked by the suction member 31 and lifted.

Further, when the suction member 31 is rotated from the angle (H) to the angle (G) and the bag body 12 or 13 is lifted, the holding claw 8a at the tip of the delivery arm 6 provided in the delivery section 49 is provided. 8b is closed, and the bag body 12 or 13 is transferred from the suction member 31 to the transfer arm 6. Further, the bag 12 or 13 is shown in FIG. 2 by the delivery arm 6 (a).
When the holding member 9 is lifted to the position, the bag body 12 or 13 is passed over the holding claws 9a and 9b of the holding member 9, and the holding member 9 is held.
The bag body 12 or 13 is passed to the holding claw 10a of the swivel arm 10 of the packaging device 11 by the movement.

FIG. 4 shows the control unit of each of the above mechanisms.
The bag supply device 20 includes a sequencer 40 such as a relay circuit, the limit switches 24 and 30, an air cylinder 41 as a drive source for the rotating table 29b and the suction member 31, and a drive source for the shutter 28. An air cylinder 42, a motor 43 for rotating the first belt conveyor 22, a motor 26 for driving the second belt conveyor 23, an I / O circuit 44 for inputting and outputting a synchronization signal from the packaging device, and the like. ing.

The operation of the bag feeding device 20 having the above structure will be described with reference to FIG. FIG. 5 is a flowchart showing the operating state. First, a large number of bags 12 or 13 are vertically arranged on the first belt conveyor 22 as shown in FIGS. 1 and 2. In this case, in this embodiment, even if the bags 12 and 13 have the zipper 12a and the bottom 13a and the thicknesses at the both ends are different, the bags are arranged in the horizontal direction. By doing so, a sufficient number of sheets can be supplied at one time. In this way, the input of the operation start signal from the packaging device is awaited.

Step 1: Wait for input of an operation start signal from the packaging apparatus body. If the signal is input here, the process proceeds to step 2.

Step 2: The second belt conveyor 23 is driven. The second belt conveyor 23 is driven once to make a push-out protrusion 2 provided on the outer periphery of the belt 23c.
The bag body 12 or 13 positioned on the upper side by 3d
Are collectively sent out to the discharge path 25 at a time. The plurality of bags 12 slide down along the slope of the discharge path 25, and are temporarily stopped by the shutter 28 provided in the middle.

Step 3: Limit switch 2 at this time
It is detected by 4 that all the bags 12 or 13 on the second belt conveyor 23 have been taken out, and since there is no bag, the process proceeds to step 4. When the bag is not yet taken out and remains on the switch 24, the second belt conveyor 23 is driven again.

Step 4: When the limit switch 24 detects that the bag on the second belt conveyor 23 has been discharged, the first belt conveyor 22 is driven and the second belt conveyor 23 is driven. Bag 12 or 13
Moves, and when the limit switch 24 detects the bag, the first belt conveyor 22 stops.

Step 5: The bag 12 is moved by the limit switch 30 arranged below the rotary table 29b.
Or the presence of 13 is detected. If the bag 12 or 13 is not detected, the process proceeds to step 6, and if it is detected, the process proceeds to step 7.

Step 6: Rotate the shutter 28,
The bag 12 or 13 stopped here is sent to the rotating table 29b. The plurality of slidable bag bodies 12 or 13 hit the positioning portion 29c and have their ends aligned.

Step 7: When there is a bag on the rotating table 29b, the drive link 38 is driven by the rod 36 in association with the power of the packaging device 11, and the rotating table 2 is moved.
9b is driven in the clockwise direction, and the bag 12 or 1 on it is driven.
3 is lifted to the (f) position. At this time, the rotation bracket 34 has an angle of (h) in FIG.
1, the uppermost bag 12 or 13 is adsorbed.

Next, the drive link 3 is synchronized with the packaging device 11.
When 8 is driven in the clockwise direction, the rotary table 29b is lowered to the position (e), and the rotary bracket 34 is rotated to the angle (g) so that the uppermost bag body is moved by the suction member 21. Can be lifted. And the holding claw 8 of the delivery arm 6
a and 8b are closed, and the lifted bag is the delivery arm 6
And the delivery arm 6 is rotated to pass the bag body 12 or 13 to the sandwiching member 9, and the swivel arm 10 is moved.
Is passed to the holding claw 10a. Drive link 38 again
Is driven, the rotating table 29b is rotated to the position of (f), and the rotating bracket 34 is rotated to the angle of (h), and the next bag is sandwiched by the suction member 31. Ie 1
Each time a single bag is adsorbed by the adsorbing member 31, the rotary table 29b returns to the (e) posture, and each time the bag remains on the rotary table 29b due to the inclined surface, the positioning unit 29 is used.
Aligned with c. When the limit switch 30 detects that the number of bags on the rotating table 29b is one, the above operation is repeated.
Opens, and the bags of the next group slide down on the rotary table 29b.

Step 8: In the packaging device 11, the swivel arm 10 is swung to the station of each stroke,
The mouth of the bag is opened, the contents are filled, and the mouth is sealed. In this embodiment, the rotary table 29b and the suction member 31 are driven by the same link mechanism.
These operations may be separately driven. Further, the moving unit 29 may have the structure shown in FIG. The moving unit 50 shown in the figure includes a rotating table 52 that rotates together with the shaft 51, and an arcuate positioning unit 53 that is provided so as to face the open end of the rotating table 52. . Unlike the above embodiment, the positioning portion 53 shown in this embodiment is configured as a member separate from the rotary table 52. The positioning portion 53 is curved and formed along the movement locus of the open end of the rotating table 52.
Even with the moving unit having such a configuration, the bags on the rotating table can be aligned in the same manner as described above.

[0030]

According to the present invention described in detail above, in a bag body supply device for supplying a plurality of bag bodies one by one to a packaging device or the like, a certain amount of bag bodies are taken out collectively and tilted. Since the bags are sent to the moving unit, where the bags are aligned by the positioning unit at the moving unit and then lifted to the delivery unit, be sure to send the bags one by one even if the bags have uneven thickness. Will be able to.

[Brief description of drawings]

FIG. 1 is a partial front view showing the configuration of a bag feeding device as one embodiment.

FIG. 2 is a partial front view showing the configuration of part of the bag feeding device shown in FIG.

FIG. 3 is a plan view of the bag replenishing unit shown in FIG.

FIG. 4 is a block diagram showing a control unit of the bag supply device.

FIG. 5 is a flowchart showing an operating state.

FIG. 6 is a partial front view showing another embodiment of the moving unit.

FIG. 7 is a front view of a conventional bag feeding device.

8A and 8B are a front view and a side view of a bag body as an example.

9 is an explanatory view showing a state in which the bag body shown in FIG. 8 is stacked on the bag body supply portion shown in FIG.

10A and 10B are a front view and a side view of a bag body as an example.

11 is an explanatory view showing a state in which the bag body shown in FIG. 10 is stacked on the bag body supply portion shown in FIG.

[Explanation of symbols]

 2, 12, 13 Bag 6 Delivery arm 8a, 8b Holding claw 9 Clamping member 10 Swing arm 20 Bag feeding device 22 Bag replenishing section (first belt conveyor) 23 Extracting section (second belt conveyor) 25 Discharging Path 29 Moving part 29b Rotating table 29c Positioning part 31 Adsorption member 49 Delivery part

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI Technical display location B65H 1/04 326 A 7716-3F 1/30 320 8308-3F

Claims (1)

[Claims] 1. A bag replenishing section to which a plurality of bags are arranged and sent on a substantially horizontal plane, and a take-out section for taking out a part of the plurality of bags sent by the bag replenishing section at one time. A plurality of bags taken out by the take-out section are slantingly arranged so as to slide down, a positioning section at which the tips of the plurality of bags slid down to the moving section hit, and the moving section is tilted. A bag feeding device, which is provided with a delivery unit that delivers the bags on the moving unit one by one to the next step when lifted up.