JPH0224609B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention enables the folding work to be performed reliably by preventing each folding roll from floating off, and furthermore, the plate thickness of the coated metal material of the coated metal envelope can be reduced. To provide a folding machine which can perform good folding even when changes are made and can be easily removed even during folding work to further improve folding work efficiency.

[Conventional technology and its problems]

BACKGROUND ART Recently, there has been active research and development into coated metal enclosures that are constructed watertightly and airtight by seam welding coated metal materials (mainly stainless steel materials, etc.) to the inner and outer surfaces of structures. If the upper end of the joint a to be seam welded is simply cut off as shown in Fig. 7, it will look like a vertical knife, which is not only extremely dangerous for industrial workers, but also Because of the inconvenience of cutting the cord of the seam welding machine, etc., it was necessary to break off the upper end of the joint part a. Folding machines have already been developed for this purpose, but they may not be able to reliably fold, or may not be able to produce good folds if the thickness of the coated metal material changes, or may cause problems during the folding process. When a problem occurs, the folding machine cannot be easily removed, resulting in a significant drop in folding work efficiency.

[Means to solve the problem]

In order to solve the above problem, the inventor has made extensive research and has developed an invention in which a plurality of groups of folding rolls for folding the upper edge of a vertical thin sheet material can be driven inside the folding machine body. , At least one of the main roll and the secondary roll of the pair of rolls in each group is formed so that the diameter becomes smaller as it goes downward, and the roll is positioned slightly below the rolls of the plurality of groups. A folding machine may be provided with a sliding support plate to support the folding machine body, or a plurality of folding rolls for folding the upper edge of a vertical thin plate may be drivably provided within the folding machine body. Of the pair of folding rolls in each group, at least one of the folding main roll and the folding sub roll is formed so that the diameter becomes smaller as it goes downward, and the pairs of folding rolls of the multiple groups are aligned approximately horizontally. A folding machine in which upper rolls of folding are made to spring against each other and the upper edges of vertical thin plates are bent to a substantially right angle are made to spring downward;
Alternatively, a plurality of groups of folding rolls for folding the upper edge of the vertical thin plate material are drivably provided in the folding machine body, and at least one of the pair of folding rolls of each group is a main folding roll and a sub-folding roll. The diameter of the thin sheet material is reduced as it goes downward, and the pairs of folding rolls of the plurality of groups are repelled from each other in a substantially horizontal direction, and the upper edge of the vertical thin sheet material is bent to a substantially right angle. The upper roll is fired downward,
Furthermore, by making the folding machine capable of opening the main folding roll or the sub-roll of the folding rolls out of the multiple groups of folding rolls to the outside in a substantially horizontal direction, the folding work can be ensured by preventing each folding roll from floating off. ,
Furthermore, good folding can be achieved even if the thickness of the coated metal material of the coated metal envelope changes, and the folding machine can be easily removed during folding work, further improving folding efficiency. , which solves the above problem.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 to 6.

Reference numeral 1 denotes a folding machine main body, which is composed of a box-shaped outer casing 1a with an open bottom and a bearing main body 1b. The outer casing 1a is fixed to cover the bearing body 1b. The bearing body 1b has a plurality of bearings (four in the embodiment) at appropriate intervals in the longitudinal direction.
2) bearing storage areas are provided. 2a, 2b
is a fixed bearing or a movable bearing, and the bearing body 1
They are stored in each of the bearing storage portions b. Specifically, the fixed bearing 2a is fixed to one side (the left side in FIG. 2) of the bearing housing part of the bearing body 1b, and the movable bearing 2b is fixed to the other side (the left side in FIG. 2) of the bearing housing part of the bearing body 1b. right side) and horizontally (left and right in FIG. 2). The fixed bearings 2a, 2a, . . . and the movable bearings 2b, 2b, . . . support roll shafts 3, 3, . Specifically, horizontal grooves 4, 4 are formed in the movable bearing 2b, and the horizontal grooves 4, 4 engage the tips of roller keys 5, 5 provided on the side wall of the bearing housing portion of the bearing body 1b. The roller shaft 3 is configured to slide and move substantially horizontally while maintaining a substantially vertical state. The fixed bearings 2a, 2a,...movable bearings 2b, 2b,
At the lower end of the roll shafts 3, 3, each group is
That is, a pair of first folding rolls 6 to fourth folding rolls 9 are fixed to each other. The first folding roll 6 has a pair of a first folding main roll 6a and a first folding sub roll 6b whose diameter becomes smaller as it goes downward, and a truncated conical first folding upper roll 6b. 6c is pivotally supported. The second folding roll 7 also has a pair of a second folding main roll 7a and a second folding sub roll 7b whose diameter becomes smaller as it goes downward, and a second folding upper roll 7c in the form of a flat roll is placed on top of this. It is pivoted. One of the third folding rolls 8 has a third folding main roll 8a whose diameter becomes smaller as it goes downwards, and a third folding main roll 8a whose diameter rapidly becomes smaller as it goes downwards, and a flange on the lower side. A third folding sub-roll 8b formed thereon is configured as a pair. The fourth folding roll 9 has a pair of a fourth folding main roll 9a and a fourth folding sub roll 9b whose diameter becomes smaller toward the bottom.

As described above, at least one of the folding main roll and the folding sub roll is formed so that the diameter becomes smaller as it goes downward.

It should be noted that the use of primary and secondary is for explanation purposes only, and the two are parallel concepts.

A spur gear 10 is provided at the upper end of each of the roll shafts 3.
are fixed, and the spur gear 1 of a pair of folding rolls in each group
0 and 10 are configured to mesh with each other, and the spur gears 10 and 10 are configured to be housed within the outer casing 1a. Reference numeral 11 denotes a pressure pin, the tip of which abuts against the side surface of the movable bearing 2b inside the bearing body 1b, and the other end protrudes to the outside of the outer casing 1a.
A wedge-shaped groove 12 is formed at the other end of the pressure pin 11 (on the right side in FIG. 2). A wedge piece 13 is inserted into the wedge-shaped groove 12, and its lowering acts to pull out the pressure pin 11 outward. A pressure spring 14 (compression disc spring) is interposed between the flange at the tip of the pressure pin 11 and the side wall of the outer casing 1a. It is configured to be pressed to the left (in the figure). At this time, even if the lower end of the wedge piece 13 is inserted, the pressure spring 14 is configured to exert a sufficient pressure action. Further, a bearing stopper 16 with a compression spring 15 (compression coil spring) is fixed to one side of the movable bearing 2b, and is configured to constantly press the movable bearing 2b outward (to the right in FIG. 2). . The elastic force of the compression spring 15 is considerably smaller than the elastic force of the pressure spring 14, and after the pressure pin 11 is pulled out, the compression spring 15
The movable bearing 2b is pushed outward (to the right in FIG. 2) by the elastic force of , thereby opening the gap between the folding rolls (widening the gap). While the pressure spring 14 is acting, the compression spring 15 is fully compressed in the tubular bearing stop 16 (see FIG. 2).
The wedge piece 13 is configured to be able to slide up and down on the side surface of the outer casing 1a, and its upper end is in contact with a plate cam 17, so that the wedge piece 13 descends as the plate cam 17 rotates. There is. In the embodiment, two wedge pieces 13,1
3 is fixed at the upper end with a horizontal rod 18, and the wedge piece 1
Dovetail-shaped protrusions 13a, 13a are formed on both sides of the dovetail-shaped protrusions 13a, 13a, and the two wedge pieces 1 are engaged with dovetail grooves 19, 19 fixed to the outer casing 1a.
3 and 13 are configured to be movable up and down, and their horizontal rods 18 are always urged upward by compression springs 20. A plate cam 17 is in contact with the horizontal rod 18.

Further, the first folding upper roll 6c is pivotally supported by a support plate 21 provided in a lower recess on the side of the movable bearing 2b on which it exists, and the second folding upper roll 7c is also supported on the movable bearing 2b on which it exists. The support plate 21 is pivotally supported by a support plate 21 provided in a recess below the side portion of the support plate 21 . One end of each support plate 21 is pivotally supported in a recessed portion of the movable bearing 2b, and the other end is pressed by a spring 22 (compression coil spring) and is always urged downward. Reference numerals 23 and 23 denote sliding support plates, which are shaped like skis, are provided symmetrically on the left and right sides (in FIG. 2), and are located slightly below the first main folding roll 6 to the fourth main folding roll 9. is configured to do so. Specifically, the lower ends of the vertical rods 24, 24 are fixed to the front side (the front side in FIG. 1) and the rear side of the sliding support plate 23, and the upper ends thereof are fixed to the bearing body 1.
They are fixed via L-shaped brackets 25, 25 provided at b. In addition, although the embodiment of the plural groups of folding rolls has four stages from the first folding roll 6 to the fourth folding roll 9, the number of folding rolls may be smaller than this depending on the thickness of the plate to be folded, the material, etc.
Sometimes it's a lot. 26 in the figure is an electric motor,
By driving the motor, the spur gear 10 is rotated via the spur gear 27 and idle gear 28 at the lower end of the electric motor 26 . An arm 29 is fixed to one end of the plate cam 17. In addition, when the roll shaft 3 is further inclined, it is suitable to use the spur gear 10 as a bevel gear.

[Effect]

First, the folding machine is placed on a coated metal envelope, and the first folding main roll 6 of the first folding roll 6 is
a Drive the electric motor 26 while holding the upper end of the seam-welded joint with the first folding sub-roll 6b;
Start the folding work. As shown in FIG. 5, the first fold main roll 6a of the first fold roll 6 is
While the lower side of the joint part a is held between the first folding sub-roll 6b, the upper end edge of the joint part is bent at an angle of approximately 45 degrees using the first folding upper roll 6c. Then, as shown in FIG.
While holding the lower side of the joint part a with the second folding main roll 7a and the second folding sub roll 7b, the second folding upper roll 7c
Press the upper edge of the joint part a to bend it at an angle of approximately 90°. Next, as shown in FIG. 5, the third fold main roll 8a of the third fold roll 8 is
The upper end edge of the joint part a is further bent to approximately 135 degrees using the folding subroll 8b. Then, as shown in FIG. 5, the upper end edge of the joint part a is further bent downward by the fourth fold main roll 9a of the fourth fold roll 9, and the fourth fold sub roll 9b.
Bend it 180 degrees and complete the folding so that it is in close contact with the lower side of joint part a. If the thickness of the thin plate material to be broken (joint part a) changes, or if the thickness of the thin plate material to be broken suddenly increases during the folding operation,
1st fold roll 6 to 4th fold roll 9
The movable bearings 2b, 2b, ... at the positions are the pressure springs 1
4 to the right in FIG. 2 to accommodate changes in plate thickness. Furthermore, the first folding upper roll 6c and the second folding upper roll 7c can also be moved upward against the spring 22 to accommodate changes in board thickness.

〔Effect of the invention〕

In the invention set forth in claim 1, a plurality of groups of folding rolls for folding the upper edge of a vertical thin plate material are drivably provided in the folding machine body 1, and one of the pair of folding rolls in each group is By forming at least one of the main roll and the secondary roll so that the diameter becomes smaller as it goes downwards, the roll that becomes smaller in diameter as it goes downwards, When the speed becomes faster than the lower side and the pair of folding rolls rotates, as they rotate, they act to lift the thin plate material (joint part a) upward. In other words, when considering a vertical thin sheet material (joint part a) as a reference, the folding roll acts as if it bites into the lower part of the thin sheet material (joint part a) while rotating, and the folding roll cuts into the thin sheet material during the folding operation. It is possible to prevent floating deviation without easily coming off from (joint part a), allowing extremely smooth folding work, and significantly increasing folding work efficiency.

In addition, in the invention of the same paragraph 1, a sliding support plate 2 is provided at a position slightly below the folding rolls of the plurality of groups.
3 and 23 to support the folding machine main body 1, the entire load of the folding machine is transferred to the sliding support plate 2.
3 and 23, the multiple groups of folding rolls function only to fold the thin plate material (joint part a), and as a result, as the folding rolls rotate and advance, the vertical This eliminates the occurrence of fine arc-shaped wrinkles on the flat main plate near the thin plate material (joint part a), and allows the folding machine to move smoothly. In addition, the sliding support plates 23, 23
With the presence of the folding roll, the folding main roll and the folding sub-roll need only have a roll thickness corresponding to the folding height, which is economical.

Next, in the invention set forth in claim 2, in particular, the pairs of folding rolls of the plurality of groups are made to rebound from each other in a substantially horizontal direction, and the upper edge of the vertical thin plate material is made to have a substantially right angle. By causing the bending upper roll to snap downward, the thickness of the thin plate material to be broken (joint part a) may change, or the thickness of the thin plate piece to be broken during the folding process may change at the joint part, etc. Even if the sheet thickness suddenly becomes thicker or thinner due to the existence of a sheet, the horizontal distance between the multiple groups of folding rolls will become narrower or wider to follow the change in thickness against the elastic force. This allows for extremely good folding work, and the efficiency of folding work can be significantly improved. Furthermore, the vertical spacing between the multiple groups of folding rolls that bend the upper edge of the vertical sheet material to almost a right angle against the elastic force becomes narrower or wider, resulting in changes in sheet thickness. The upper edge can be bent to a nearly right angle with any plate thickness. Furthermore, similar to the invention in item 1, the folding roll does not easily come off from the thin plate material (joint part a) during the folding operation, and floating deviation can be prevented.

Further, in the invention of claim 3, in addition to the structure of the invention of claim 2, the main folding roll or the sub-folding roll of the plurality of folding rolls can be opened outward in a substantially horizontal direction. By doing so, if any trouble occurs during the folding operation, the folding machine can be moved vertically by opening the folding main roll or the folding sub roll outward in a substantially horizontal direction and widening the space between the folding rolls. It can be removed from the thin plate material (joint part a) very easily, and the folding work efficiency can be significantly improved.
In the past, the drive of the folding rolls had to be reversed to travel a certain length (for example, about 2 to 3 meters), which solved the disadvantage of being extremely inefficient. Even if the folding main roll or the folding sub-roll can be opened outward in a substantially horizontal direction,
By causing the plural groups of folding rolls to repel each other in a substantially horizontal direction during the folding operation, the folding operation can be performed while properly holding the vertical thin plate material (joint portion a). The other configurations are the same as the configuration of the invention in item 2, and similar effects can be achieved.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the present invention, Fig. 2 is a longitudinal sectional front view of the present invention, Fig. 3 is a perspective view of a fixed bearing, Fig. 4 is a perspective view of a movable bearing, and Fig. 5 is a folding process of the present invention. FIG. 6 is a perspective view of the folded upper roll portion, and FIG. 7 is a perspective view of the joint portion of the coated metal envelope. 1...The folding machine body, 6...The first folding roll, 7...The second folding roll, 8...The third folding roll, 9...The fourth folding roll, 23...
...Sliding support plate.

Claims (1)

[Scope of Claims] 1. A plurality of groups of folding rolls for folding the upper edge of a vertical thin plate material are drivably provided in the folding machine body, and a main folding roll of a pair of folding rolls in each group;
At least one of the folding sub rolls is formed so that its diameter becomes smaller as it goes downward, and a sliding support plate is provided at a position slightly below the folding rolls of the plurality of groups to support the folding machine main body. A folding machine featuring 2. A plurality of groups of folding rolls for folding the upper edge of a vertical thin plate material are drivably provided in the folding machine body, and a main folding roll of the pair of folding rolls in each group;
At least one of the secondary folding rolls is formed so that its diameter becomes smaller as it goes downward, and the pairs of folding rolls in the plurality of groups are repelled from each other in a substantially horizontal direction, and the upper edge of the vertical thin plate material is formed. This folding machine is characterized by having an upper folding roll that bends at a nearly right angle and is fired downward. 3. A plurality of groups of folding rolls for folding the upper edge of a vertical thin plate material are drivably provided in the folding machine body, and a main folding roll of a pair of folding rolls in each group;
At least one of the secondary folding rolls is formed so that its diameter becomes smaller as it goes downward, and the pairs of folding rolls in the plurality of groups are repelled from each other in a substantially horizontal direction, and the upper edge of the vertical thin plate material is formed. The folding mechanism is characterized in that the folding upper roll, which is bent to a substantially right angle, is made to spring downward, and the folding main roll or the folding secondary roll of the plurality of folding rolls can be opened outward in a substantially horizontal direction. Machine.