JPH0790613B2 - Guide plate adjustment mechanism for sheet-fed square bottom bag making machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag-making machine for manufacturing bags (paper bags) by folding and molding natural paper or synthetic paper made of polystyrene film or the like. The guide plate that is provided for guiding and pressing and supporting the material to be molded can be easily, quickly, and accurately moved to a predetermined location, and the type of material to be molded and the shape of the paper bag to be manufactured can be changed (hereinafter referred to as mold change). ) Can be quickly dealt with to improve the production efficiency, and to a guide plate adjusting mechanism of a single-wafer square bottom bag making machine.

[0002]

2. Description of the Related Art In recent years, demand for paper bags has been rapidly increasing in department stores, wedding halls and the like, and in particular, the demand for paper bags made of synthetic paper that is not damaged even in the rain is remarkable. This paper bag is continuously manufactured by sequentially folding, molding, and gluing flat material to be molded (natural paper or synthetic paper) stacked in the paper feeding portion at each portion of the bag making machine.

In the bag making machine, a paper feed section for supplying a material to be molded, a scoring portion for making a folding line on the material to be molded, and a body sticker for folding and gluing a body portion of a paper bag along the folding line. And a corner bottom for folding and molding the bottom of the paper bag, and a series of operations are automatically performed.

Conventionally, when a paper bag is manufactured by the bag-making machine, the type of paper bag (shape, size, size of the paper bag, etc.) for manufacturing the guide plates arranged at various places (mainly the body sticking part) of the bag-making machine. The position was adjusted each time according to the paper quality, paper thickness, etc.).

In other words, by adjusting the position of the guide plate for guiding and conveying the material to be molded and pressing and supporting it, folding and molding are carried out at a predetermined position to manufacture a predetermined paper bag. Each time, it is necessary to adjust the position of the guide plate.

The position adjustment is performed by rotating the feed shaft provided on each guide plate, and the rotating operation is performed while measuring the position of the guide plate with a measure.

[0007]

However, if the position adjustment of the guide plates arranged in large numbers at various places of the bag making machine is carried out by rotating the feeding shaft one by one, the guides which require adjustment in units of 1/10 mm are required. The plate has a problem that it takes much time and can be adjusted only by an experienced adjuster. In particular, since a measure is used for the position adjustment, even an experienced adjuster is very difficult to perform the adjustment work.

Further, in the manufacture of paper bags, it is general to manufacture the same kind of paper bags on a regular basis, but in the meantime, many kinds of paper bags are often manufactured, and therefore, the same kind of paper bags are again manufactured. It was very inefficient because it needed to be adjusted again when it was manufactured.

[0009]

SUMMARY OF THE INVENTION In view of the above circumstances, the present invention has a sheet feeding portion for supplying a material to be molded, a scoring portion for forming a folding line on the material to be molded, and the covering member along the folding line. A body sticking part that forms the body part of the bag by bending the forming material, and a square bottom part that forms the bottom part of the bag, a pair of ribbon plates on the body sticking part, and a pair adjacent to the ribbon plate. A ribbon plate guide, and a guide plate composed of a pair of folding guides arranged in front of the ribbon plate, and these guide plates are movable on a delivery shaft. One side of the pair of ribbon plates, the ribbon plate guide, and the folding guide can be linked with a movable feed shaft, and the other side can be linked with a movable feed shaft with a linking member, and feed of both of them can be performed. The guide plates are respectively provided on at least one end of the shaft. There is provided a guide plate adjusting mechanism for sheet-fed square bottom bag-making machine, characterized in that the displacement indicator capable of finding the amount of displacement is mounted.

[0010]

According to the present invention, it is possible to accurately adjust the position of a guide plate that guides and conveys a material to be molded and presses and supports it in a short time.

In other words, since each feed shaft for moving the guide plate is connected by a connecting member such as a chain so that the guide plates work together, any one of the feed shafts connected by the connecting member is connected. By rotating the, all the corresponding guide plates can be moved and adjusted at the same time.

Further, since the displacement amount indicator is attached to the delivery shaft, the displacement amount of the guide plate can be known from the displacement amount indicator.

[0013]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a plan view showing a connecting state of guide plates in a bag making machine according to the present invention. In FIG. Show.

The guide plate 20 is a ribbon plate 21a, 21b arranged on the secondary molding portion 15b of the body attaching portion 15.
And ribbon guides 23a and 23b adjacent to the ribbon plates 21a and 21b, and folding guides 25a and 25b arranged in front of the ribbon plates 21a and 21b. 21b and the ribbon plate guides 23a and 23b, the folding lines L1 and L6 (see FIG. 7).
The folding lines L1 and L6 are folded by the streamline-shaped portions 27 and 28 of the folding guides 25a and 25b.

As shown in FIG. 2, the ribbon plates 21a and 21b are provided at the bottom of sliding legs 63a and 63b slidably provided on a support shaft 61 of a holding frame 60 fixed to the bag making machine 10. The delivery shafts 31a, 31b are fixed to the screw holes 65a, 65b formed in the sliding legs 63a, 63b.
Is screwed in. Therefore, the delivery shafts 31a, 31
When b is rotated, the ribbon plate 21 is moved along the support shaft 61.
a and 21b move left and right.

On the other hand, as shown in FIG. 2, support pieces 71a and 71a (only one is shown in the figure) are provided at both ends of the bottom of the ribbon plate guide 23a, and support pieces 71b are provided at both ends of the bottom of the ribbon plate 23b. , 71b (only one of which is shown in the drawing) are fixed to each other, and the supporting piece 7
Shaft support portions 73a and 73b having screw holes (not shown) are fixed to the tips of the shafts 1a and 71b, respectively.
Delivery shafts 33a, 33b, 34 are provided in the screw holes of 3a, 73b.
a and 34b are screwed. And the delivery shaft 33a,
By rotating 34a, the ribbon plate guide 23a moves toward the delivery shafts 33a, 34a, and the delivery shaft 33a
By rotating b and 34b, the ribbon plate guide 23
b moves in the direction of the delivery shafts 33b and 34b.

On the other hand, as shown in FIG. 6, the folding guide 25
Support pieces 75a, 75a (only one of which is shown in the figure) are fixed to both ends of the bottom portion of a, and a shaft support portion 77a having a screw hole 79 drilled at the tip of the support pieces 75a, 75a, 77a is fixed, and the delivery shafts 35a, 3 are provided in the screw holes 79 of the shaft support portions 77a, 77a.
6a is screwed. And the delivery shafts 35a, 36a
When the folding guide 25a is rotated, the folding guide 25a
It moves in the directions of a and 36a (the description is omitted because the other folding guide 25b also moves by the same mechanism).

The guide plates 20 (ribbon plates 21a, 21b, ribbon plate guide 23) configured to be movable in this manner.
a, 23b, folding guides 25a, 25b) delivery shaft 31
As shown in FIGS. 1 and 3, the tips of the a, 31b, ... Sprocket wheels 40, 40, ...
.. are fitted and each sprocket 40
Are connected by a connecting member 50 made of a chain as shown in the figure.

The delivery shafts 31a, 33a, 34a,
When a handle (not shown) is attached to any one of 35a and 36a and rotated, each of the delivery shafts 31a, 33a, ...
Is started to rotate at the same time, and the ribbon plate 21a on one side, the ribbon plate guide 23a, and the folding guide 25a are interlocked.

On the other hand, the delivery shafts 31b, 33b, 34b, 3
When a handle (not shown) is attached to any one of 5b and 36b and rotated, each of the delivery shafts 31b, 33b, ...
Starts to rotate at the same time, and the ribbon plate 21b on the other side, the ribbon plate guide 23b, and the folding guide 25b interlock with each other.

In particular, the folding guides 25a and 25b are shown in FIG.
Since it is fixed by the screw inserted in the long hole 80 as shown in (4), fine adjustment can be performed after interlocking.

Incidentally, since the displacement amount indicator 100 is actually attached to the tips of the delivery shafts 31a and 31b as described below, the handle cannot be attached.

That is, at the tips of the sending shafts 31a and 31b,
A displacement amount indicator 100a called a digital position indicator of a mechanism in which a plurality of discs having numbers 0-9 engraved in order on the side surface are rotated by meshing of gears, and the amount of rotation of a rotating shaft or the like is sequentially counted, 100b is attached.

Therefore, the displacement amount y of the ribbon plates 21a and 21b moving left and right in accordance with the rotation of the delivery shafts 31a and 31b, the ribbon plate guides 23a and 23b interlocking with the ribbon plates 21a and 21b, and the folding guide. It is possible to easily find the displacement amount y of 25a and 25b (the minimum unit is 0.1 mm).

The display unit 110 of the displacement amount display 100 is shown.
It is preferable that the displacement amount display 100 and the pitch of the screw threads of each delivery shaft 30 are made to correspond to each other so that the numerical value displayed on the display is the same as the actual displacement amount y (for example, the display unit 1
When the number 10 changes from 01552 to 01752, the guide plate 20 moves 20.0 mm).

However, for example, when the display unit 110 is 01
When 552 to 01752, the actual displacement amount y is 4
It may be 0.0 mm. That is, the display unit 11
If there is a simple proportional relationship between the display value of 0 and the actual displacement amount y, the actual displacement amount y can be easily calculated, and the operator is guided by the rotation of the handle. It is easy to know how much 20 is displaced.

Next, the operation of the bag-making machine 10 will be outlined. The material p to be molded laminated on the paper feed section 11 is
The fold line L can be attached to the crease portion 13 in sequence.

The material to be molded p having the fold line L attached thereto is first fold line L3 at the primary molding portion 15a of the body sticking portion 15.
L4 is folded, then folding lines L2 and L5 are folded, and folding lines L1 and L6 are formed at the secondary molding portion 15b.
After being folded in, the body portion C1 of the bag C is molded by being glued at the glue allowance portion t.

The material p to be molded with the body C1 molded is
Further, while being pressed by the rollers, it is conveyed to the corner bottom portion 17, and the corner bottom portion 17 forms the bottom portion C2 of the bag C to form the bag C.

When the mold is changed, for example, a handle is attached to the delivery shaft 33a and rotated to move the ribbon plate 21a, the ribbon plate guide 23a, and the folding guide 25a by a predetermined amount in a predetermined direction. Displacement indicator 10
Move while watching 0a.

Next, the handle is attached to the delivery shaft 33b,
Ribbon plate 21b, ribbon plate guide 23b, folding guide 2
5b is moved in a predetermined direction by a predetermined amount while observing the displacement amount indicator 100b.

A handle may be mounted on the delivery shaft 30 other than the delivery shafts 33a and 33b for operation, but when the handle is operated here, the guide plate 20 moves while observing the displacement amount display 100. It is preferable because it can be operated.

Although the embodiments of the present invention have been described above, in the present invention, the displacement amount display 100 is a digital display.
Besides a gear-driven type called a position indicator, a rotary encoder or the like can be used.

Further, according to the above embodiment, the connecting member 50
Is a chain stretched around the sprocket 40, but it may be a timing belt or the like stretched around a pulley.

[0035]

According to the present invention, since the guide plates can be interlocked by connecting the respective feed shafts for moving the guide plates with a connecting member such as a chain, a large number of guide plates can be moved and adjusted. Can be done at the same time. For this reason, the adjustment takes about 2 hours, but an excellent effect that it can be performed in an extremely short time is obtained.

Further, since the displacement amount indicator is attached to the delivery shaft, the displacement amount of the guide plate can be detected without using a measure, so that an easy and accurate adjustment can be performed. Get the effect.

In particular, by recording the numerical value of the displacement amount indicator, the position can be adjusted by setting the value as recorded when manufacturing the same kind of bag again. It can be done more quickly.

[Brief description of drawings]

FIG. 1 is a plan view showing a connected state of each guide plate in a bag making machine according to the present invention.

FIG. 2 is a front view showing a secondary molding part of a body sticking part in the bag making machine.

FIG. 3 is a side view showing a secondary molding part of a body sticking part in the bag making machine.

FIG. 4 is a plan view showing a secondary molding part of a body sticking part in the bag making machine.

FIG. 5 is a perspective view showing a secondary molding part of a body sticking part in the bag making machine.

FIG. 6 is a perspective view showing a part of a folding guide in the bag making machine.

FIG. 7 is a perspective view showing a folded state of the material to be molded.

FIG. 8 is a perspective view showing a manufactured bag.

9A is a plan view showing the entire bag making machine, and FIG. 9B is a side view showing the entire bag making machine.

[Explanation of symbols]

 p Material to be molded L Folding line C Bag C1 Body part C2 Bottom part 10 Bag making machine 11 Paper feeding part 13 Lined part 15 Body sticking part 15a Primary molding part 15b Secondary molding part 17 Corner bottom part 20 Guide plates 21a, 21b Ribbon plate 23a, 23b Ribbon plate guide 25a, 25b Folding guide 30 Delivery shaft 31a Delivery shaft 31b Delivery shaft 33a Delivery shaft 33b Delivery shaft 34a Delivery shaft 34b Delivery shaft 35a Delivery shaft 35b Delivery shaft 36a Delivery shaft 36b Delivery shaft 40 Sprocket 50 Connecting member

Claims (1)

[Claims] 1. A paper feed unit for supplying a material to be molded, a scoring portion for forming a folding line on the material to be molded, and a body portion of a bag by bending the material to be molded along the folding line. And a pair of ribbon plates, a pair of ribbon plate guides adjacent to the ribbon plate, and a front side of the ribbon plate. In a bag making machine in which a guide plate composed of a pair of folding guides to be arranged is provided, and these guide plates are movable by a feed shaft, the pair of ribbon plates, the ribbon plate guide, and the folding One side of the guides is connected with a movable feed shaft so that they can be interlocked with each other, and the other side of the guides is linked with a movable feed shaft so that they can be interlocked with each other, and the guides are respectively connected to at least one ends of both the feed shafts. Equipped with a displacement amount indicator that can detect the displacement amount of the plate A guide plate adjusting mechanism for a single-wafer, square-bottom bag making machine, which is characterized in that