JPH0746510Y2 - Guide plate adjustment mechanism for sheet-fed square bottom bag making machine - Google Patents

Description

[Detailed description of the device]

[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 synthetic paper made of natural paper, polystyrene film, etc. A sheet that enables the installed guide plate to be easily, quickly and accurately moved to a predetermined location, and can quickly respond to changes in the type of material to be molded and the shape of the paper bag to be manufactured (hereinafter referred to as "mold change"). The present invention relates to a guide plate adjusting mechanism for a 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 constructed by successively folding, molding and gluing flat material to be molded (consisting of natural paper and synthetic paper) laminated in the paper feeding section in each part of the bag making machine. Being manufactured.

In the bag making machine, a paper feed section for supplying a material to be molded, a scoring portion for forming a folding line on the molding material, and a body of a paper bag along the folding line attached by the scoring portion. A series of work is automatically performed by a body sticking part for folding and gluing the parts and a corner bottom part for molding the bottom part of the paper bag.

Conventionally, when a paper bag is manufactured by the bag-making machine, the position of the guide plates arranged at various places of the bag-making machine (mainly the body sticking part) is adjusted every time the mold is changed.

In other words, by adjusting the position of the guide plate, folding and molding are performed at predetermined positions, and eventually a predetermined paper bag is manufactured. Therefore, the position of the guide plate is adjusted each time the mold is changed. Need to do.

The position adjustment of the guide plate is performed by separately rotating the respective feed shafts (feed screws) screwed into the screw holes of the movable piece to which the guide plate is fixed, At that time, the positioning of the guide plate was performed by measuring with a measure or the like.

On the other hand, the one in which the guide plate is interlocked is disclosed by the applicant of the present application in Japanese Patent Application No. 3-338128.

[0009]

However, the conventional guide plate adjustment described above has the following problems.

In other words, if the positions of a large number of guide plates arranged in various places of the bag making machine are adjusted by rotating the delivery shaft one by one, it is necessary to adjust the guide plates in units of 1/10 mm. In that case, there is a drawback that it requires a great amount of time (about 2 hours) and that adjustment can be performed only by an experienced adjustment worker.

In particular, since the position of the guide plate is adjusted by using a measure, it is difficult for an unskilled worker as well as an experienced adjuster to make the adjustment, and it takes a considerable time for the work. There was a flaw.

Further, in the manufacture of paper bags, it is common to manufacture the same kind of paper bags on a regular basis, but during that time, various kinds of paper bags are manufactured. Since the movement and adjustment have been performed, even when the same type of paper bag is manufactured again, the fine adjustment has to be performed in the same manner as described above, which is extremely inefficient.

On the other hand, a guide plate (having a ribbon plate, a ribbon plate guide, and an intermediate plate) of the primary molding part in the body pasting part has a movement and an adjustment amount of the other intermediate plate which are interlocked with each other. Since they may be different from each other, there is a problem that inconvenience occurs if all the guide plates are simply interlocked.

The present invention has been made in view of the above circumstances, and enables the guide plate (particularly, the guide plate in the primary molding portion) to be moved easily, quickly, and accurately at a predetermined position, so that the mold can be quickly changed. It is possible to deal with.

[0015]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a sheet feeding portion for supplying a material to be molded, a scoring portion for attaching a folding line to the material to be molded, and a line along the folding line. A body sticking portion for forming a body portion of a bag by bending the material to be formed, and a square bottom portion for forming a bottom portion of the bag,
From the pair of ribbon plates in the primary molding part that molds the gusset of the bag in the body pasting part, the pair of ribbon plate guides adjacent to the ribbon plate, and the pair of middle plates arranged above the tip of the ribbon plate. In the bag making machine in which the guide plates are provided, and these guide plates are movable on the delivery shaft,
One of the pair of ribbon plates, the ribbon plate guide, and the middle plate is linked with a chain or a timing belt so that the movable feed shafts can be linked with each other, and the other side can be linked with the movable feed shafts. A single-wafer angle characterized in that a means for independently moving the middle plate is provided, and a displacement amount indicator capable of detecting the displacement amount of the guide plates is attached to at least one end of each of the delivery shafts. A guide plate adjusting mechanism of a bottom bag making machine is provided.

[0016]

According to the present invention, the guide shafts are interlocked by connecting the feed shafts, which are feed screws, with chains or the like. The guide plate is composed of a pair of ribbon plates, a ribbon plate guide, and an intermediate plate. The front width d of the bag depends on the distance between the pair of ribbon plates and the gusset width e depends on the distance between the pair of middle plates.
Is determined (see FIGS. 4 and 5). Therefore, when changing the mold in which only the front width is changed, if the position of the ribbon plate is adjusted, the other guide plates are also interlocked with this, and the gusset width is folded with the same width as the previous one.

On the other hand, the middle plate moves independently while interlocking with other guide plates. Therefore, when changing the mold in which only the gusset width is changed, if the middle plate is moved independently and position adjustment is performed, the front width is folded with the same width as the previous time, and only the gusset width becomes the moving position of the middle plate. Accordingly, it is folded at a predetermined place.

Since the middle plate and the ribbon plate are interlocked with each other, the position adjustment of the middle plate becomes extremely easy. This will be described with reference to FIG. 4. When the material p to be formed is conveyed, the ribbon plates 21a and 21b move left and right with respect to the location where the centers of the folding lines L1 and L2 are located, that is, the center m. Adjusted.

For example, when manufacturing a bag having a front face width d of 500 mm, the displacement amounts y and y of both ribbon plates 21a and 21b are adjusted by (500/2) mm from the center m. .

At this time, in the case where each guide plate 20 operates independently, and assuming that the gusset width e is 100 mm, the middle plates 25a and 25b are (500-
It will be moved from the center m by 100) / 2.

However, the above calculation is troublesome and there is a high risk of erroneous adjustment. However, if the ribbon plates 21a, 21b and the middle plates 25a, 25b are interlocked and the middle plates 25a, 25b move independently, the middle plates 25a, 25b can be adjusted with the ribbon plates 21a, 21b as a reference.

In short, it is sufficient to move the middle plates 25a, 25b with respect to the ribbon plates 21a, 21b by the displacement amounts y ', y', that is, (100/2) mm, for a given gusset width. The position of half of e = 100 mm should be simply adjusted. Moreover, in the mold change in which only the front width d is changed, if the ribbon plates 21a and 21b are moved, the middle plate 2
Since 5a and 25b are interlocked with this, middle plates 25a and 25b
The position adjustment of b is unnecessary.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a primary molding portion of a bag making machine provided with a guide plate adjusting mechanism of the present invention. Indicates a guide plate.

The guide plate 20 is a ribbon plate 21a, 21b arranged in the primary molding portion 15a as shown in FIG.
And ribbon plate guides 23a, 23b arranged side by side on the ribbon plates 21a, 21b, and the ribbon plates 21a, 21b.
It is composed of intermediate plates 25a and 25b arranged above 21b.

The ribbon plates 21a and 21b are provided with support shafts 51,
Movable arms 41a, 4 slidably supported by 52
1b, which is fixed below 1b, extends toward the secondary molding portion 15b of the body sticking portion 15, and is screwed into the movable arm 41a.
It can be moved left and right by the rotation of the delivery shaft 31b screwed into b.

At the base ends of the delivery shafts 31a and 31b,
The displacement amount indicators 100a and 100b are mounted, and the delivery shafts 31a and 31b are attached to the ribbon plate guide 23.
Transmission shafts 33a, 33b for moving a, 23b are connected via a chain f.

On the other hand, the intermediate plates 25a and 25b extend from the tips of the ribbon plate guides 23a and 23b toward the secondary molding portion 15b of the body attaching portion 15 and are located above the ribbon plates 21a and 21b. One middle plate 25a is fixed on the rectangular parallelepiped movable pieces 45a, 45a ', and the other middle plate 25b is fixed on the movable pieces 45b, 45b'.

In FIG. 2, ribbon plates 21a, 21b,
Ribbon plate guides 23a, 23b and intermediate plates 25a, 25
The positional relationship of b is shown.

By the way, ribbon plate guides 23a, 23b
3, one of the ribbon plate guides 23a is fixed onto the movable pieces 43a and 43a ', and the delivery shaft 33a is attached to the movable piece 43a, as shown in FIG. The delivery shafts 33a 'are screwed into the movable pieces 43a'. The other ribbon plate guide 23
b is fixed on the movable pieces 43b and 43b ',
b is a delivery shaft 33b, and the movable piece 43b 'is a delivery shaft 33b.
b'is screwed in respectively.

On the other hand, the movable pieces 45a, 45a 'and the movable pieces 45b, 45 to which both ends of the intermediate plates 25a, 25b are fixed.
b ', the movable pieces 47a, 47a' arranged on the side of the movable pieces 45a, ..., and the movable pieces 47b, 47.
b'is the support shafts 53, 5 installed on the bag making machine 10.
4, the support shafts 55 and 56, and the support shafts 57 and 58 slidably support the upper and lower ends thereof, respectively.
5a has a delivery shaft 35a, and movable piece 45a 'has a delivery shaft 3a.
5a 'is screwed into the movable piece 45b, and the delivery shaft 35b is screwed into the movable piece 45b'.

Further, the delivery shafts 35a, 35a ', 35
b, 35b 'are movable pieces 47a, 47a', 47b, 4
The bearings r, ... Fitted in 7b 'are respectively fitted.

Further, the movable piece 45a has a delivery shaft 36a,
The movable piece 45a 'has a delivery shaft 36a', the movable piece 45b has a delivery shaft 36b, and the movable piece 45b 'has a delivery shaft 36a'.
b'is loosely inserted into each of the delivery shafts 36.
a, 36a ', 36b, 36b' are movable pieces 47a, 4
7a ', 47b, 47b' are respectively screwed.

The delivery shaft 35a ', which is projected to the outside,
Displacement amount indicators 110a and 110b are attached to one end of 35b, and the respective output shafts 33a and 33a '...
・ 36b 'has sprockets with the same pitch ...
Are fitted as shown in FIG. 3, and the sprockets s, ... Are connected via a chain f as shown in FIG.

Therefore, when a handle (not shown) is attached to the delivery shaft 33a and rotated, the ribbon plate 21a, the ribbon plate guide 23a, and the intermediate plate 25a move left and right, and the delivery shaft 33b is similarly rotated. Then, the ribbon plate 21b, the ribbon plate guide 23b, and the middle plate 25b move left and right.

The middle plate 25a is rotated by rotating the delivery shaft 35a ', and the middle plate 25b is rotated by rotating the delivery shaft 35b.
Will move left and right independently.

By the way, as shown in FIG. 4 (a), the material p to be molded, which is made of flat paper or the like and has the folding line L attached at the creased portion 13, is a ribbon plate as shown in FIG. 4 (b). 21a,
21b and the intermediate plates 25a and 25b connect the folding lines L1 and L2.
The inner plates 25a, 25b and the upper plates 27a, 27
The folding lines L3 and L4 are folded by b.

Further, the displacement amount indicators 100a, ... 11
0b is a so-called digital position indicator of a mechanism in which a plurality of discs having numbers 0 to 9 sequentially engraved on the side surface are rotated by meshing gears and the amount of rotation of a rotating shaft or the like is sequentially counted. The displacement amount indicators 100a and 100b are arranged from the center m to the ribbon plates 21a and 2b.
The distance to the outside of 1b, that is, the displacement amount y, y is displayed,
The displacement amount indicators 110a and 110b include ribbon plates 21a,
The distance from the outer side of 21b to the inner side of the middle plates 25a, 25b, that is, the displacement amounts y ', y'is displayed (the minimum unit of the displayed numerical value is 0.1 mm).
The center m is the folding line L when the material p to be molded is conveyed.
This is the location where the midpoint between 1 and L2 is located.

By the way, the displacement indicator 100a, ...
Displacement amount indicators 100a, ... 11 so that the numerical values displayed on 110b and the actual displacement amounts y and y'are the same.
The pitch ratio between the internal gear 0b and the screws engraved on each of the feed shafts 31a, ... Is 1: 1.

However, when actually manufacturing the bag C as shown in FIG. 5, the front width d (folding line L1,
L2) and gusset width e (distance between folding lines L1 and L5) are given numerical values to advance the work.
A, 31b, ... Screw pitch and displacement amount display 100
The ratio of a, ... to the pitch of the internal gear is 1: 2,
It is preferable that the value displayed on the displacement amount display 100a, ... Is double the actual value.

For example, the front width d is 300 mm and the gusset width e is
When manufacturing the bag C of 100 mm, the display value of the displacement amount indicators 100a and 100b is "30" if the above is performed.
If the display values of the displacement amount indicators 110a and 110b are set to "100", the ribbon plate 2 is actually used.
The displacement amounts y and y of 1a and 21b are "150" and "150".
And the displacement amount y ′ of the intermediate plates 25a, 25b,
Since y'is "50" and "50" and the desired bag C is manufactured, it is effective without the trouble of calculating half the values of the front face width d and the gusset width e.

Next, the operation of the bag making machine 10 adopting the guide plate adjusting mechanism of the present invention will be described. The material p to be formed on the sheet feeding section 11 is sequentially supplied from the sheet feeding section 11. The fold line L can be attached at the attachment portion 13.

The material to be molded p having the folding line L attached thereto is then folded at the primary molding portion 15a of the body sticking portion 15 into the folding lines L1 and L2.
And then the folding lines L3 and L4 are folded, and the folding lines L5 and L6 are folded at the secondary molding portion 15b, and then glued at the paste margin t of the material p to be molded. Thereby, the body portion C1 of the bag C is molded.

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 a change of the mold is caused in which the front width d is changed, a handle is attached to the delivery shafts 33a and 33b shown in FIG.
a, 21b, ribbon plate guides 23a, 23b, and middle plates 25a, 25b in a predetermined direction by a predetermined amount by a displacement amount indicator 1
It may be moved while watching 00a and 100b.

Further, when a mold change occurs in which the gusset width e is changed, a handle is attached to the delivery shafts 35a 'and 35b, and the handle is rotated, whereby the middle plates 25a and 25b are rotated.
Displacement indicator 110a, 1 for a predetermined amount in a predetermined direction
You can move it while watching 10b.

Although the embodiment of the present invention has been described above, as another embodiment, for example, the sprockets s, ... Fitted on the respective delivery shafts 31a, ... And the chains f ,. .. may be used as a pulley and a timing belt.

Further, as a mechanism for interlocking and independently moving the guide plate 20, the delivery shaft for operating the guide plate 20 can be interlocked by simply connecting it in a chain, and
It is also possible that the sprocket arranged on the delivery shaft of the middle plate is constructed so as to be fastened with a screw, and that the middle plate alone moves independently by loosening the screw.

[0048]

The guide plate adjusting mechanism of the sheet-fed square-bottom bag making machine according to the present invention is constructed as described above, and therefore has the following effects.

(1) The ribbon plate, the ribbon plate guide, and the intermediate plate are interlocked with each other, and the intermediate plate moves independently. Therefore, when changing the mold in which only the front width or the gusset width of the bag is changed, each guide plate is changed. There is no need to adjust each. Therefore, the number of work steps is reduced, and the efficiency of the work for adjusting the guide plate is dramatically improved.

(2) Further, since the position of each guide plate can be known by the displacement amount indicator, each guide plate can be moved and adjusted to a predetermined position quickly and accurately, and thus the guide plate adjustment work can be performed. The efficiency and accuracy of the moving position are dramatically improved.

(3) Further, since the intermediate plate is interlocked with the ribbon plate, the position can be adjusted with the ribbon plate as a reference when the intermediate plate is independently moved to adjust the position. Therefore, when the middle plate is moved to the position having the given gusset width, it can be easily moved without any troublesome calculation.

[Brief description of drawings]

FIG. 1 is a perspective view showing a primary molding part of a bag-making machine provided with a guide plate adjusting mechanism of the present invention.

FIG. 2 is a plan view showing a positional relationship between guide plates.

FIG. 3 is a plan view showing a guide plate adjusting mechanism of the present invention.

FIG. 4A is a plan view showing a material to be molded, and FIG. 4B is a front view showing a state where the material to be molded is folded by each guide plate.

FIG. 5 is a perspective view showing a bag manufactured by a bag-making machine.

6A is a plan view showing the entire bag-making machine, and FIG. 6B 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 Square bottom part 20 Guide plates 21a, 21b Ribbon plate 23a, 23b Ribbon plate guide 25a, 25b Middle plate 100a, 100b, 110a, 110b Displacement amount indicator

Claims (1)

[Scope of utility model registration request] 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. Comprising a body sticking portion for molding a square bottom portion for molding the bottom portion of the bag, a pair of ribbon plates in the primary molding portion for molding the gusset of the bag in the body sticking portion, a pair of ribbon plates adjacent to the ribbon plate. A bag making machine in which a ribbon plate guide and a guide plate composed of a pair of intermediate plates arranged above the tip of the ribbon plate are provided, and these guide plates are movable by a delivery shaft, One side of the pair of ribbon plates, the ribbon plate guide, and the middle plate are connected by a chain or a timing belt so that the movable delivery shafts can be interlocked with each other, and the other side can be interlocked with each other by a chain or a timing belt. A means for independently moving the middle plate is provided, and A guide plate adjusting mechanism for a single-wafer corner bottom bag making machine, characterized in that a displacement amount indicator capable of detecting a displacement amount of each of the guide plates is attached to at least one end of each of the feed shafts.