JPH0543566B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field] The present invention relates to an apparatus for packaging a predetermined number of synthetic resin bags sequentially made by a bag making means into outer bags.

[Background of the invention and prior art]

Conventionally, in this type of bag making means, when making wide bags, bags are made sequentially from one bag material strip, but when making narrow bags, bags are made sequentially from the single strip of bag material. Two or more strips of bag material are supplied in parallel to the bag making means of the bag making means, and two or more bags are made in parallel at the same time to form two or more stacked bag groups on a holder, and the bags in these bag groups are When the number of bags reaches a predetermined number, these groups of bags are similarly supplied to a packaging device section having a packaging function corresponding to this number of bags, and are packaged all at once.

However, the number of times the packaging device operates is usually once for every 20, 25, 50, 100, etc. bags, or about 5 to 1 time per minute, which reduces the operating efficiency of the packaging device. is extremely bad. Moreover, the structure of the packaging device is extremely complicated, and since several sets of packaging functions are incorporated within the same width as the bag making means, the structure is even more complicated and the maintenance of the device is difficult. Many materials are required, the weight is large, and the power consumption required for operating power is large, resulting in an increase in product cost, and it is not economical as a means of packaging groups of bags as described above.

〔the purpose〕

Therefore, this invention aims to improve the above-mentioned drawbacks by simplifying the structure of the bag packaging device, increasing the operating efficiency of this part, and reducing the weight and size of the entire device to save materials, and as a result reduce costs. It is also possible to obtain the economic effect of reducing the amount of water used.

〔composition〕

In this invention, two or more bags are made in parallel at the same time by a single bag making means, and then two or more bags are stacked in sequence, and each time a predetermined number of bags is reached, these bag groups are kept in parallel. A prerequisite is a bag packaging device that is supplied simultaneously and further packs each bag group into an outer bag until the next set of bags is supplied, and in this prerequisite device, The top plate that receives the plurality of bags is provided with one supply port for supplying a single bag group to the outer bag position, and near this supply port is provided a supply port for moving the bag group to the supply port position in the width direction. One of the claws and support members is provided to move in the width direction, and bag group auxiliary supply means is provided for sequentially conveying each bag group to the supply port. It is a packaging device.

[Description of embodiments of the invention]

In FIGS. 1 and 2, A is a bag-making means, and this bag-making means A is provided with a bag delivery conveyor and a receiving stand 10 for successively stacking and receiving the bags B delivered from the conveyor. Two or more bags are delivered onto the table 10 in parallel at the same time, and in the illustrated example, two bags are delivered in parallel and stacked. C is a bag packaging device installed immediately downstream of this pedestal 10, and the top plate 11 forming the upper surface thereof is formed slightly lower than the surface of the pedestal 10, and the top plate has fine and smooth irregularities. is formed by press molding, and the number of irregularities is about 1 to 3 per cm (see Figure 7).
The top plate 11 is made of stainless steel, a synthetic resin plate, an iron plate whose surface is treated with a fluororesin having a small coefficient of friction, an iron or other metal plate with a Teflon sheet attached, wood, a synthetic resin plate, etc. There is. The width of this top plate is large enough to receive two sets of bags B ₁ in parallel, and the top plate 11 has a supply opening formed of, for example, an elongated slit in the width direction, in the center of the width. 12 is provided, and an outer bag D support section is provided directly below the top plate 11, and one supplied bag group B ₁ is transferred to the top plate 11 by straddling the supply port 12 of the top plate 11. The supply port 12 is connected to the supply port 12 by the vertical insertion plate 13 provided in the upper standby position.
It is provided so that it can be inserted into the outer bag D while being folded in half.

The formation position of the supply port 12 is not limited to the center in the width direction of the top plate, but is formed on the top plate so as to cross the feeding direction of one bag group B ₁ of the two bag groups B ₁ . Even if it is unevenly distributed on the left or right side and provided on the top plate 11, the present invention is the same.

Traveling slits 14 and 15 are provided on the upstream and downstream sides of the supply port 12, and the top plate 11
A bag group auxiliary supply means 20 is provided below, and is constructed as follows. That is, the claw support member 2 reciprocates along the running slits 14 and 15.
1, each of which has three claws 22 planted at intervals slightly wider than the width of the bag group B ₁ to be supplied, and the running slit 1
It is provided to protrude upward from 4 and 15. Therefore, it goes without saying that the width of the top plate 11 is sufficient to allow the three claws 22 to reciprocate. The means for reciprocating the claw support member 21 and the claw 22 is as shown in FIGS. 3 to 5.
1 is fixed to a part of the endless chain 23, and the shaft 25 of the sprocket gear 24 that meshes with the endless chain 23 is rotated by a reversible rotary motor 26. Instead of this motor, an air cylinder device is used. Even if this device is used, there is no change in this device invention.

Alternatively, the pawl 22 may be directly fixed to an endless chain 23 provided below the traveling slits 14, 15.

In the case where the supply ports 12 are unevenly distributed on the left or right side of the top plate 10, the other bag group B ₁
A central pawl 22 for feeding the water into this supply port 12.
The two claws a and the outer claw 22 support this toe support member 2.
It is attached to 1.

[Operation of the embodiment]

As for the movement of these three claws 22, first, as a standby position, the center claw 22a is aligned with the center of the supply port 12, the claws 22 at both ends are located on both sides, and each claw 22a is aligned with the center of the supply port 12.
Bag group _B1 is supplied between the two. Then, the bag group _B1 receives the signal supplied to the top plate 11,
As an input signal, the claws 22 arranged in two rows together with their support members 21 move all at once from the position shown by the solid line in FIG. 3 to the position shown in FIG. Therefore, two bag groups B ₁
is moved parallel to the width direction of the top plate 11, and one bag group is
The pawl 22 and its support member 21 stop in a state where B ₁ straddles the center of the supply port 12 .
Next, the insertion plate 13 descends and passes the bag group _B1 on the supply port 12 through the supply port 12 while folding it in half.
The insertion plate 13 is inserted into the outer bag D which is kept on standby by a support device below, and the insertion plate 13 rises and returns to its original position. Next, the claw 22 and its support member 2
1 moves in the opposite direction as shown in FIG. 5, and when the remaining bag group B ₁ is located at the supply port 12,
The insertion plate 13 is lowered and raised again to insert this second bag group _B1 into the next outer bag. Therefore, nail 22
And the claw support member 21 returns to the standby position. These one-cycle operations are performed from when the bag group _B1 is supplied onto the top plate 11 until the next set of bags is supplied.

The means 30 for conveying the aforementioned bag group B ₁ from the pedestal 10 to the top plate 11 is not particularly limited;
As shown in Fig. 2, a pair of upper and lower gripping claws 3
1 is provided with several sets of positions for gripping each bag group B ₁ , and this gripping claw support frame is provided so as to reciprocate between the pedestal 10 and the top plate 11 , and the gripping claw support frame is provided so as to move back and forth between the pedestal 10 and the top plate _{11 .}
can be transported as it is from above the pedestal 10 to above the top plate 11.

[Other embodiments of bag group auxiliary conveyance means]

In the case where the number of bag groups _B1 is three, four claws 22 are provided at equal intervals as shown in FIG.
The standby position is located between the two middle claws as the center position corresponding to the supply port 12 position, and when three bags group B ₁ are fed onto the top plate at the same time, the insertion plate 1
3 is lowered and raised, and then the claw support member 21 having four claws 22 is moved to the top plate 11 by one section between the claws 22.
Then, the insertion plate is lowered, and after rising, the claw 22 and the claw support member 21 are moved in the width direction of the claw 22.
After moving in the opposite direction by the section, the insertion plate 13 is lowered and raised again, and finally the claw and support member 21 return to the standby position.

[Other embodiments of bag group auxiliary supply means]

It is shown in FIG. 8 and has a configuration that does not use the claw 22 and claw support member 21 of the above embodiment,
The support member 27 that supports the bag group _B1 is an endless belt or an endless chain conveyor, and a part thereof protrudes slightly from the slits 14 and 15 or is protruded only during conveyance by an air cylinder device, a cam, a lever, etc. By moving this forward or backward, the bag group _B1 can be supplied to the position of the supply port 12.

As another bag group auxiliary feeding means, the present invention is the same even if a claw screwed into the screw is reciprocated by rotation of the feed screw rod.

The stroke of the bag group auxiliary supply means 20 described above is determined by position detection sensors S ₁ ,
It is controlled by the installation location of S ₂ and S ₃ or by the rotation angle of the motor 26 mentioned above.

The means 30 for conveying the several groups of bags _B1 from the pedestal 10 to the top plate 12 is as described above, but to explain it in more detail, it consists of several bags (four in the figure) provided above and below. A pair of upper and lower gripping claws 31
The claw support frame 32 supporting the bags is moved to the position of the pedestal 10, the downstream ends of the several bag groups _B1 are grabbed by the grip claws 31, and the claw support frame 32 is moved in the downstream direction. , when the position of each bag group B ₁ is such that the center position in the upstream and downstream direction coincides with the supply port 12, the grip claw 31 is opened and each bag group is placed at that position.
B ₁ is placed, and after one cycle of operation of the bag group auxiliary supply means 20 described above is completed at a further downstream position, the bag group auxiliary supply means 20 moves to the position of the pedestal 10 again.

〔Effect of the invention〕

Since it is configured and operates as described above, the packaging function of the bag packaging device only needs to be able to wrap one bag group B ₁ at a time, and the structure is simple, the material used to construct the device is small, and the weight is reduced. They can be made smaller, require less electric power to drive them, and the operating efficiency of the bag packaging apparatus can be doubled or tripled.

In particular, although there are several bags in group _B1 supplied on the top plate, they are sequentially supplied to the supply position, so each bag group is
B ₁ can be sequentially packaged.

[Effects of embodiment]

In the embodiment in which the top plate 11 has irregularities, there is little contact resistance between the top plate 11 and the bags, and the bag group can be moved easily and reliably to the supply port 12 position.
The bag group auxiliary supply means 20 does not need to have such great mechanical strength.

The embodiment described in claim 2 is suitable for bag packaging when there are two bag groups _B1 , and when one bag group _B1 is initially supplied to the supply port 12, the remaining bags are Group B ₁ is moved from the position of the supply port 12 to a position outside the supply port 12, and one bag of group B ₁
This movement not only ensures the supply of bags to each supply port, but also allows the edges of the bag group _B1 to be aligned.

The bag group auxiliary supply means shown in FIG. 8 has fewer reciprocating mechanisms and is conveyed by a chain or belt conveyor, resulting in a simpler structure.

The supply port 12 is unevenly distributed on the left or right side of the top plate 11,
In the case where two claws 22a and 22 are used to send the other bag group _B1 to the supply port 12, the horizontal movement mechanism of the bag group _B1 is simplified, and the number of claws may be small.
The stroke can also be short.

[Brief explanation of drawings]

The drawings show things related to the present invention, and FIG. 1 is a plan view, FIG. 2 is a partially longitudinal side view, and FIG.
3 to 5 are longitudinal sectional front views of the positions of the bag group auxiliary supply means, FIG. 6 is a front view of another embodiment of the bag group auxiliary supply means, and FIG. 7 is a partial sectional view of the top plate. , FIG. 8 is a front view of still another embodiment of the bag group auxiliary supply means. Code, A...Bag making means, B...Bag, _B1 ...Bag group, C...Bag packaging device, D...Outer bag, 10...
cradle, 11...top plate, 12...supply port, 13...
Insertion plate, 14, 15... Traveling slit, 20...
... Bag group auxiliary supply means, 21 ... Claw support member, 22
...Claw, 22a...Central claw, 23...Endless chain, 24...Sprocket gear, 25...Shaft, 2
6... Reversible rotation motor, 30... Conveying means, 31
...grabbing claws.

Claims (1)

[Claims] 1. By a single bag making means, simultaneously in parallel,
Two or more bags are made and sequentially stacked into two or more stacked bag groups, and each time a predetermined number of bags is reached, these bag groups are fed simultaneously in parallel, and the next set of bags is fed. In a bag packaging device for packaging each bag group as a unit into an outer bag, the top plate that receives the plurality of bag groups is provided with one supply port for supplying to the outer bag position of the bag group. In the vicinity thereof, a claw for moving the bag group to the supply port position in the width direction, and a type of support member are provided so as to move in the width direction, and each bag group is sequentially moved to the supply port position. A bag packaging device characterized by being provided with an auxiliary supply means for conveying bags to a mouth. 2. The bag group auxiliary supply means includes three claws that protrude upward from the center and both sides of the top plate through slits formed in the width direction of the top plate, and the three claws are arranged at intervals between the three claws. and a reciprocating drive means for simultaneously reciprocating within the slit while holding the slit, and the position of these claws is such that the center claw is at the center of the width of the top plate as the standby position; The bag group fed by one of the outer claws moves in one direction until it reaches the center position of the supply port and stops in response to a signal that the bag group is supplied to the top plate;
After one group of bags has been supplied to the supply port, each of the claws moves in the opposite direction in unison, and the remaining bag group is moved to the center position of the supply port by the outer claw on the opposite side to the previous one. , and then stops, and after this bag group is supplied to the supply port, returns to the standby position. The bag packaging device according to claim 1, characterized in that the bag packaging device performs one cycle.