JPH06126335A - Device for forming cold roll moving on forming line - Google Patents

Abstract

PURPOSE:To deal with the production of many kinds in small quantities by changing roll size quickly at a set of roll forming stands and reducing the dead time of a line. CONSTITUTION:A forming line 1 composed of many cold roll forming stands 5 through which a panel material 3 is passed to form a prescribed shape is equipped on a truck 2 which can be displaced in the direction crossed with the line 1. The roll forming line 1 is composed of a 1st forming line 1A consisting of many stands 5A arranged at equal pitches (p) and a 2nd forming line 1B consisting of many stands 5B, 5B arranged in parallel with the 1st line 1A and shifted by half a pitch from that of the line 1A. When A transmission gear and an idle gear which are arranged corresponding to stands 5 are put in the engaging state, all rolls 7 of the selected forming line are rotated by a single change-over gear and a driving means 6 at the same time in the same direction. In the forming line which is not selected, the roll size is changed when the other line is under working.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forming line movable cold roll forming apparatus, and more particularly, to supplying a panel material such as a metal sheet to be formed to a forming line and passing it through a large number of cold roll forming stands. In addition, the present invention relates to an apparatus capable of easily changing the size of each roll in a roll forming facility that sequentially forms a predetermined shape.

[0002]

2. Description of the Related Art In general, in order to obtain a desired sectional shape by molding a panel material, there are a method of applying the panel material to a press bending machine and a method of applying it to a roll forming machine. The latter is extremely suitable for producing a long construction material having a constant cross-section such as a roof or wall surface of a building, and has an advantage that it can be produced in a large amount as compared with the former. On the other hand, the rolls must be replaced each time the product shape is different, and since the number of rolls is large, it takes a lot of time to prepare and there is a problem in terms of operating rate. In such a roll forming machine, a relatively thin panel is supplied as a product material, and since the surface of the panel is preliminarily painted or chemically treated, it is usually two forming rolls installed above and below. It consists of a series of cold roll stands equipped with. In a forming line consisting of such a large number of cold roll stands, each stand is provided with a gear that transmits its rotational force to the roll so that all stands can be driven by a single electric motor. The gears of the adjacent stands are meshed with each other via idle gears, etc., and simultaneously rotate in the same direction to continuously form and move one panel material. Due to such a driving mode, the panel material is slightly deformed in the first stand, and the deformation is promoted every time it passes through the subsequent stands, and finish molding with a predetermined cross-sectional shape is performed in the stand located at the final stage. . By the way, the surface of the upper roll and the lower roll mounted on the roll stand has the shape required for molding,
Due to the complicated cross-sectional shape of the product, each roll is a combination of divided rolls that can be separated in the axial direction.

[0003]

By the way, as often seen in recent years, high-mix low-volume production is also required in the roll forming field. Therefore, it is necessary to change the roll size of the entire molding line according to the product shape. As described above, one roll is composed of a plurality of divided rolls.
Since 6 roll stands are installed, it takes a lot of time and labor to change the size of the rolls. Conventionally used forming machines include a fixed roll forming machine and an exchange bed type roll forming machine. In the former case, since the molding machine is fixedly arranged at the production position, the drive of all the stands is stopped and the production is completely stopped when the size is changed. In this case, the function of the rolling down device that presses the upper roll against the lower roll is released, and the method of pulling out the upper and lower two rolls to the side is taken, or the rolling down device itself is removed from the stand and the roll is pulled up. How to take it. Therefore, even a small roll forming stand must be interrupted for several hours and a large roll forming stand for more than 10 hours. On the other hand, in the case of the exchange bed type roll forming machine, another removable forming stand bed is provided on the bed fixed at the production position. Just replace it with. That is, instead of changing each individual roll on the line,
A plurality of molding machines whose rolls have been changed can be loaded at one time. In this case, the work of removing the power unit and the work of removing the replacement bed are required, but the size change work can be completed at another place, and only the replacement work substantially interrupts the operation of the line. As compared with the fixed cold roll forming machine described above, the replacement time can be remarkably shortened. However, in the case of a large machine, the weight of the exchange bed is large, and there is an unavoidable disadvantage that the crane operation is disadvantageous and inconvenient. Further, there remains a problem in ensuring safety at the work site.
Each of the above-mentioned molding machines has a problem that it requires a large number of workers, the operating rate of the line is remarkably reduced in high-mix low-volume production, and the stability of the operation is lacking.

The present invention has been made in view of the above problems, and an object thereof is a forming line in which a large number of cold roll forming stands for arranging a panel material in order until a predetermined shape is obtained are arranged. When changing the roll size of the cold roll forming stand, the time required for the preparatory work can be omitted, and the time required for the replacement and the time and effort can be reduced as much as possible to quickly respond to small-lot production of various products. It is an object of the present invention to provide a forming line movable cold roll forming apparatus capable of realizing an operating system.

[0005]

The present invention provides a roll forming line for continuously passing a panel material through a plurality of cold roll forming stands arranged in a line and successively forming the panel material into a predetermined shape. Therefore, the gears that drive the rolls of each cold roll forming stand by the single drive means installed in that line are simultaneously the same through the idle gear that is located between the cold roll forming stands and idles. Applied to a cold roll forming machine adapted to be rotated in the direction. 1 and 4, the roll forming line 1 includes a first forming line 1A including cold roll forming stands 5A and 5A arranged at the same pitch p, and the first forming line 1A. The cold roll forming stand 5A of 1A and a second forming line 1B which is parallel with a half pitch are installed on one carriage 2. The first molding line 1A and the second molding line 1B
Between the first forming line 1A, the first line gear shaft 11A connected to the roll shaft 7a of the cold roll forming stand 5A, and the roll of the cold roll forming stand 5B of the second forming line 1B. A roll driving force distribution gear device 9 is provided in which the second line gear shaft 11B connected to the shaft 7b and the second line gear shaft 11B are alternately arranged in the extending direction of the roll forming line 1. In the first line gear shaft 11A,
The first line transmission gear 8A ₁ fixed to drive each roll 7A of the first forming line 1A and the second line idler rotatably supported to transmit the rotation to the second line gear shaft 11B. The gear 8B ₂ and the gear 8B ₂ are mounted coaxially in parallel. On the other hand, the second line for gear shaft 11B, a second line for transmitting gear 8B ₁ fixed to drive each roll 7B of the second molding line 1B in each other chewing the second line idle gear 8B _2, The first line transmission gear 8A ₁ is meshed with the first line idler gear 8A ₂ which is rotatably supported to give rotation to the following first line gear shaft 11A, coaxially in parallel. Can be installed. At the end portion of the roll driving force distribution gear device 9, a switching gear 13 that is displaced so as to selectively engage with the transmission gear 8A ₁₁ and the idle gear 8B ₂₁ of the gear line gear shaft 11A ₁ located at the extreme end. Is installed. A speed reducer 15 that transmits a rotational force to the switching gear 13 and an electric motor 16 that supplies a driving force to the speed reducer 15 are mounted on the carriage 2. And the cold roll forming stands 5A, 5A of the first forming line 1A
When changing the size of the rolls 7A, 7A in the above, or when changing the size of the rolls 7B, 7B in the cold roll forming stands 5B, 5B of the second forming line 1B, the cart 2 is extended in the direction in which the roll forming line 1 extends. Traveling wheel 1 that can be moved in a direction orthogonal to
The trolley 2 is equipped with 7, 17 (see FIG. 3).

[0006]

When the size of the roll 7B of the second forming line 1B is changed, the traveling wheels 17, 17 are driven to move the carriage 2 to a predetermined position (see the chain double-dashed line in FIG. 3). At this time, the first molding line 1A is aligned with the pass line to which the panel material 3 is supplied, and the second molding line 1B is aligned with the panel material 3
Out of the supply route. Therefore, the switching gear 13 shown by the two-dot chain line in FIG. 5 is changed to the position of the broken line and disengaged from the idle gear 8B ₂₁ (see FIG. 4) that was previously meshed with each other.
It is meshed with the transmission gear 8A ₁₁ . The transmission path of the driving force from the drive means 6 such as the speed reducer 15 and the electric motor 16 is switched, and the first molding line 1A is ready for operation. When the electric motor 16 is driven, the driving force via the speed reducer 15 is transmitted to the transmission gear 8A ₁₁ via the switching gear 13 and is rotated by the rotation of the molding line gear shaft 11A ₁ located at the end of the transmission gear 8A _11. The roll 7A of the second cold roll forming stand 5A ₁ is rotated. On the other hand, without the second line idle gear 8B ₂₁ to floating rotating the gear shaft 11A ₁ for the first line is rotated, it does not drive the cold roll forming stand 5B of the second molding line 1B. The torque of the first line transmission gear 8A ₁₁ is
It is transmitted to the idle gear 8A ₂ for the first line, which idles and rotates on the gear shaft 11B for the second line, which is behind by a half pitch, and is also transmitted to the transmission gear 8A ₁ for the subsequent first line that meshes with the idle gear 8A ₁ and is integrated with it. By the rotation of the first line gear shaft 11A, the roll 7A of the _second cold roll forming stand 5A ₂ is simultaneously driven.
In this way, the entire cold roll forming stand 5A ₁
Roll 7A of through 5A _16, 7A is rotated simultaneously, the panel member 3 in the first forming line 1A is formed into a product having the desired cross-sectional shape. On the other hand, in the second forming line 1B, the roll 7B of each cold roll forming stand 5B is removed, and the size changing work for forming the next different shaped products is performed. Even if the work takes time, it may be completed before the molding on the first molding line 1A is completed. If the procedure reverse to the above is followed, the second molding line 1B
It is possible to change the size of the roll in the first molding line 1A by putting the roll into an operating state.

[0007]

According to the present invention, a large number of cold roll forming stands, which pass through a panel material and successively form into a predetermined shape, are displaced by the movement of a trolley, and while one forming line is operating. In addition, the size of the roll can be changed on the other molding line. The first molding line and the second molding line are shifted by a half pitch, and the roll driving force distribution gear device and the switching gear installed between the two lines form one of the moldings by a single drive means mounted on the carriage. The line can be operated. In this manner, while the panel material is being formed into a desired shape on one molding line, preparations can be made for molding products of different sizes and shapes on the other molding line. Therefore, although the interruption of several minutes occurs due to the change of the forming line, a long break of the entire line is avoided, and it is possible to improve the operation rate of the roll forming line and stabilize the operation. Moreover, it is possible to quickly cope with small-lot production of a wide variety of products and to produce efficiently. In addition, since the roll drive force distribution gear device and the switching gear are placed between both molding lines, equipment costs can be significantly reduced by sharing drive means, downsizing the bogie, and saving space for machine installation. Reduction is achieved.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings. FIG. 1 is a plan view of a roll forming line 1 including two rolls to which a roll size changing device according to the present invention is applied. The roll forming line 1 is composed of a first forming line 1A and a second forming line 1B, and is installed on one carriage 2 in parallel with each other. Then, the metal molded plate such as the panel material 3 is supplied from the direction of the arrow M at a fixed position. The panel material 3 that has passed through the pair of widetable groove-shaped guide rollers 4 and 4 is sequentially molded into a predetermined shape in either one of the molding lines so that a long corrugated panel or the like as a building material is produced. It has become. Each forming line is composed of, for example, 16 cold roll forming stands 5 and 5 (in the figure, an intermediate part is omitted and 8 units are shown). As shown in FIG. Due to the meshing of gears, which will be described later, provided corresponding to the stand 5, all of the molding lines on the selected side shown in FIG. 1 are driven by a single drive means 6 installed at the end 1a of the roll molding line 1. The rolls 7, 7 are adapted to be rotated simultaneously. In this roll forming line 1, the cold roll forming stand 5 of the first forming line 1A is used.
A and 5A shift half the pitch p between the cold roll forming stands 5A and 5A adjacent to each other in the first forming line 1A with respect to the cold roll forming stands 5B and 5B of the second forming line 1B. Are arranged.

As shown in FIG. 4, the first line transmission gear 8A ₁ and the first line idle gear 8A ₂ provided corresponding to the cold roll forming stands 5A, 5A are meshed with each other to form a cold roll. The second line transmission gear 8B ₁ and the second line idle gear 8B ₂ provided corresponding to the roll forming stands 5B and 5B are meshed with each other. The entire gear train is covered with the cover 9a shown in FIG. 1, and constitutes a roll driving force distribution gear device 9.
The roll driving force distribution gear device 9 is installed between the first molding line 1A and the second molding line 1B, and
Along them they extend all the way across the line. In FIG. 4, the cold roll forming stand 5 of the first forming line 1A
The flexible shaft coupling 10 is attached to the roll shafts 7a and 7a of A and 5A.
The first line gear shaft 11A is connected via A and 10A, and the cold roll forming stand 5 of the second forming line 1B is connected.
B and 5B roll shafts 7b and 7b also have flexible shaft couplings 10B,
The second line gear shaft 11B is connected via 10B. Therefore, the roll driving force distribution gear device 9 is preferably equipped with the first line gear shaft 11A and the second line gear shaft 11B alternately in the extending direction of the roll forming line. The transmission shaft 8A for the first line described above is attached to the gear shaft 11A for the first line.
₁ and the second line idle gear 8B ₂ are mounted coaxially in parallel with each other, and at a position shifted by a half pitch p / 2 rearward from the first line gear shaft 11A, with the first line gear shaft 11A. Second line gear shaft 11 provided in parallel
On B, a transmission gear 8B ₁ for the second line and an idle gear 8A ₂ for the first line are mounted coaxially in parallel. The first line transmission gear 8A ₁ and the second line transmission gear 8B ₁ are fixed to the respective gear shafts by keying, and the first line idle gear 8A ₂ and the second line idle gear 8B ₂ Is rotatably supported on each gear shaft via two bearings 12, 12.

At the end of the roll driving force distribution gear device 9 having such a gear train, a first line transmission gear 8A ₁₁ fixed to the outermost first line gear shaft 11A ₁ and its end are provided. The switching gear 13, which selectively meshes with the second idle gear 8B ₂₁ rotatably supported on the first line gear shaft 11A ₁ , is the switching gear case 1.
It is installed in 4. In addition, this switching gear case 1
4 is connected to the roll driving force distribution gear device 9 and forms the end of the device 9. The switching gear 13 is supported so as to be displaceable in a direction orthogonal to the extending direction of the roll forming line 1, and a speed reducer 15 for transmitting a rotational force to the switching gear 13 is mounted on the carriage 2. Then, the DC motor 1 that supplies a driving force to the speed reducer 15
6 is also mounted on the trolley | bogie 2, and these whole can be moved by the traveling wheels 17 and 17 shown in FIG. Although the gear shaft of the switching gear 13 is not shown,
The switching gear 13 is connected to the output shaft of the reduction gear 15 by spline fitting or the like, and the switching gear 13 is broken by a broken line by turning an operation handle provided on the switching gear case 14 or by expanding and contracting the hydraulic cylinder 18 shown in FIG. Is shifted so that it can take the position of or the position of the chain double-dashed line.

That is, the clevis 19 is provided at the tip of the piston rod 18a of the hydraulic cylinder 18, and the switching gear 13 can be shifted by the pendulum motion of the swinging arm 20 connected thereto. Therefore, the liner 21, shown in FIG.
A shifter 22 having a U-shaped cross section that is slidably sandwiched via 21 is provided. More specifically, the shifting arm 24 shown in FIG. 6 is integrated with the rotary shaft 23 that forms the center of rotation of the swing arm 20, and is mounted so as to rotate inside the switching gear case 14. There is. On the other hand, the shifter 22 itself can be displaced by sliding its lower surface to a guide member 14a provided on the switching gear case 14. That shifter 2
A shift pin 22a is planted in the center of the back surface of the slot 2 and the slot 2 formed in the shifting arm 24 described above.
It is loosely inserted so that the inside of 4a can be relatively displaced. Therefore, when the shifting arm 24 is rotated via the rotary shaft 23 by the swing of the swing arm 20 (see FIG. 5),
The shift pin 22a displaces the shifter 22 to the position indicated by the solid line or the position indicated by the alternate long and two short dashes line while relatively moving within the elongated hole 24a. That is, the switching gear 13, and change the engagement between the first line for transmitting gear 8A ₁₁ removed from the first line for the second line idle gear 8B ₂₁ of gear shaft 11A _1, or, the engagement of the reverse Can be changed to.

By the way, when the size of all the rolls 7B, 7B in the cold roll forming stand 5B of one of the roll forming lines, for example, the second forming line 1B, is changed, the carriage 2 extends in the direction in which the roll forming line 1 extends. Is moved in a direction orthogonal to. For this purpose, the traveling wheels 17, 17 described above, which are driven by the geared motor 26 with a built-in reduction gear via the gear transmission mechanism 25 shown in FIG. 3, are mounted on the lower surface of the carriage 2, and the pit 27 shown in FIG.
H-shaped steel frame 28 fixed to b, rails 29 on 28,
Move 29. In FIG. 3, the trolley 2 shown by a solid line
Is located at the left end of the rail 29 and is in a state in which the cold roll forming stand 5B of the second forming line 1B can be operated. In this state, the roll 7A of the cold roll forming stand 5A of the first forming line 1A can be resized.
On the other hand, the cold roll forming stand 5 of the second forming line 1B
When the roll 7B of B is replaced, the carriage 2 is moved to the right as shown by the chain double-dashed line, positioned at the right end of the rail 29, and the first molding line 1A can be operated. Stoppers 30, 3 are provided to define the left end position and the right end position of the bogie 2 that is traveling on the rails 29, 29.
0 is installed on the floor surface 27a. This is mainly to prevent the dolly 2 from falling off the rail 29, but a damper 30a is attached in order to buffer the dolly 2 when it hits the stopper 30. Of course, although not shown, when the carriage 2 reaches the stopper 30, a limit switch or the like operates to stop the geared motor 26 and stop the traveling. At the same time, the stop command signal is sent to the securing device 31 described below.
It also gives a command to operate (see FIG. 1). Lashing device 31
Since it is not the gist of the present invention, the description will be briefly described. At the center of the left and right ends of the truck 2, the positioning hole 2
a is provided respectively, and when the first molding line 1A is operated, the locking members of the left and right fastening devices 31B, 31B are engaged with the positioning holes 2a, 2a to prevent the movement of the carriage 2. On the other hand, when the second forming line 1B is operated, the lashing devices 31A and 31A are operated to restrain the carriage 2, so that the panel material 3 is smoothly supplied and the roll forming line itself is operated stably.

According to the configuration described above, the roll size of the cold roll forming stand in the roll forming line can be changed as follows. When operating the first molding line 1A, the size of the roll 7B of the second molding line 1B can be changed. In this case,
When a command to move the trolley 2 shown by the solid line to the right is issued, the functions of the fastening devices 31A and 31A (see FIG. 1) are released, and the trolley 2 is moved by the drive of the geared motors 26 and 26. When the dolly 2 comes into contact with the stopper 30B, the limit switch operates to stop the drive of the geared motor 26, and the dolly 2 is stopped at the position indicated by the chain double-dashed line. Then, the carriage 2 is restrained by the fastening devices 31B, 31B (see FIG. 1). The panel material 3 supplied to the roll forming line 1 is always introduced at the same location in the direction of arrow M (see FIG. 1), and passes through the two pairs of groove type guide rollers 4 and 4 provided in the first forming line 1A, It is introduced into the cold roll forming stand 5A.

On the other hand, the cold roll forming stand 5B of the second forming line 1B is located at a position deviated from the supply path of the panel material 3, and this line is held in a resting state.
In order to supply power to the first molding line 1A, the piston rod 18a of the hydraulic cylinder 18 installed at the end of the switching gear case 14 shown in FIG. 5 is extended as shown by the solid line. As the piston rod 18a moves to the right, the swing arm 20 and the shifting arm 24 are rotated, and the shifter 22 at the position indicated by the chain double-dashed line in FIG. 6 is displaced to the position indicated by the solid line. The switching gear 13 is the idle gear 8B ₂₁ for the second line that was previously meshed with each other (see FIG. 4).
Disengaged from, it is changed to the engagement of the first line for transmitting gear 8A _11. When an operation command is issued, the DC electric motor 16 is driven, the driving force is reduced by the speed reducer 15, and then the switching gear 13 is passed through to the endmost first line gear shaft 11A.
It is transmitted to the first line transmission gear 8A ₁₁ fixed to ₁ . The first line gear shaft 11A ₁ rotates, and the roll shaft 7a of the _first cold roll forming stand 5A ₁ rotates. On the other hand, the second line idle gear 8B ₂₁ which are idler rotatably supported via a bearing 12, does not rotate.

The driving force of the first-line transmission gear 8A ₁₁ is further forward by a half pitch through the first-line idle gear 8A ₂ which is idly rotated by the second-line gear shaft 11B which is a half-pitch backward. Gear shaft for first line 1
It is transmitted to the first line transmission gear 8A ₁ fixed to 1A. This allows the second cold roll forming stand 5
The roll shaft 7a of A ₂ is also rotated at the same time. In this way, the roll shaft 7a of, for example, the 16th cold roll forming stand 5A ₁₆ shown in FIG. 1 is also rotated at the same time, and the first forming line 1A is attached to the rolls 7A and 7A attached thereto, respectively.
With A, the panel material 3 is successively and continuously formed into a product having a desired shape. As shown in FIG. 3, the upper roll 7U and the lower roll 7L are attached to one stand. However, the power is transmitted to the lower roll 7L and the upper roll 7U as described above. Rotates following the passage of the panel material 3.

On the other hand, in the second forming line 1B, which is off the production line, the rolls 7B used in the immediately preceding production,
7B is removed and resized to rolls for forming different shaped products. Cold roll forming stand 5
Since B is a fixed roll forming machine, first, the crown 3
2 (see FIG. 2) and the reduction device are lifted up with a wire rope and removed, and the upper and lower roll shafts 7b, 7
Roll 7B together with chocks 33, 33 supporting b
7B along the stands 34, 34 on both sides are lifted and removed. 7 (A) and 7 (B) and FIGS. 8 (A) and 8 (B) show rolls mounted on the cold roll forming stand 5 installed at typical positions. A complex surface shape is formed by combining the divided rolls. Roll the new roll 7B, 7B
Built in b, stand 3 with chocks 33, 33
Fit in 4, 34. All cold roll forming stand 5
After the roll exchange at B is completed, the pass line is set while finely adjusting the screw device of each lower roll 7L. Unlike the above, the two upper and lower rolls 7U, 7
Out of the stands 34, 34 that respectively support L, the stand 34 on the outer side of the carriage 2 is pulled out to the side, and the roll 7 is supported in a cantilevered state by the stand 34 on the inner side of the carriage 2. 7 may be removed from the roll shaft 7b and replaced.

In this way, during operation of the first molding line 1A
It is possible to complete the size change of the second molding line 1B.
Time-limited preparation for production suitable for high-mix low-volume production
Done without being done. Furthermore, the first molding line 1A
And the driving means 6 and rolls commonly used for the second molding line 1B
It can be operated by the driving force distribution gear device 9.
With this, it is possible to realize downsizing of the trolley 2 and cold rolls.
The cost of molding equipment can be reduced. Raw of the first molding line 1A
When the production is completed, the trolley 2 is moved and returned to the state shown by the solid line in FIG.
To be done. The panel material 3 is also introduced from the direction of arrow M.
However, the second molding line 1B becomes the position corresponding to it,
Roll forming becomes possible. The hydraulic cylinder shown in FIG.
Switch by the operation opposite to the above by the contraction operation of the commander 18
Gear 13 is idle gear 8B for the second line_{twenty one}(Fig. 4
(See) to be changed. Drive by electric motor 16
Power is supplied to the idle gear for the second line via the switching gear 13.
Year 8B_{twenty one}Is transmitted to the first line gear shaft 11A₁
Keeps it stationary and operates the cold roll forming stand 5A.
There is nothing to do. Second line idle gear 8B _{twenty one}of
The driving force is gear shaft 1 for the second line, which is a half pitch rearward.
1B second line transmission gear 8B₁Is flexed by
The roll shaft 7b connected via the shaft coupling 10B is rotated.
The first cold roll forming stand 5B₁Driving force
Being transmitted. In the same way as above, the second cold roll roll is formed.
Shape stand 5B₂To 16th cold roll forming stamp
5B₁₆All the rolls 7B up to are driven simultaneously.

As can be seen from the above description, in the forming line moving type cold roll forming apparatus of the present invention, two forming lines are mounted on the carriage and one common driving means and one common roll driving force are used. While operating one molding line driven by the distribution gear device, the roll size of the other molding line can be changed. Therefore, unlike the conventional roll forming line, the entire line is not stopped and the operation can be stabilized. And while it is possible to secure sufficient time to prepare for roll size change, the molding line is replaced in a few minutes, which significantly shortens the interruption time, making it possible to produce a wide variety of small quantities such as panel-shaped building materials. A suitable production system is established. In addition, by using a roll driving force distribution gear device and a switching gear, driving with a single electric motor is realized, and the overall size of the device can be reduced. Since the dolly can be moved by traveling wheels, it is not necessary to carry it by a crane to change the size of the roll, and the work safety is extremely high.

[Brief description of drawings]

FIG. 1 is a plan view showing a roll forming line of a cold roll forming stand including two stations to which a roll size changing device according to the present invention is applied.

FIG. 2 is a front view taken along the line II-II of FIG.

FIG. 3 is a view taken along the line III-III in FIG.

FIG. 4 is a detailed plan view of a gear train of a switching gear and a gear device for distributing a roll driving force.

5 is a view taken along the line VV of FIG.

6 is a shifter moving mechanism for displacing the switching gear and an operation explanatory view thereof, as viewed in the direction of arrows VI-VI in FIG. 4.

FIG. 7 is a roll shape diagram showing a combination state of divided rolls whose sizes are changed, (A) is an example for initial forming, and (B) is an example for intermediate forming, together with a panel material passing through the rolls.

FIG. 8 is a roll shape diagram showing a combination state of divided rolls whose sizes are changed, (A) is an example for intermediate forming, and (B) is an example for finish forming, and is shown together with a panel material passing through the roll.

[Explanation of symbols]

1 ... Roll forming line, 1A ... First forming line, 1B ...
Second molding line, 2 ... carriage, 3 ... panel material, 5,5A,
5A ₁ , 5A ₂ , 5A ₁₆ , 5B, 5B ₁ , 5B ₂ , 5B
₁₆ ... Cold roll forming stand, 6 ... Driving means, 7, 7
A, 7B ... Rolls, 7a, 7b ... Roll shafts, 8A ₁ , 8
A ₁₁ ... transmission gear for first line, 8A ₂ ... idle gear for first line, 8B ₁ ... transmission gear for second line, 8
B _2, 8B ₂₁ ... second line idle gear, 9 ... roll driving force distributing gear system, 11A, 11A ₁ ... gear shaft for the first line, 11B ... gear shaft for the second line, 13
... switching gear, 15 ... reduction gear, 16 ... electric motor, 17 ...
Running wheels, p ... pitch.

Front page continuation (72) Inventor Hirofumi Takahashi 7-1, 1-1, Onoedori, Chuo-ku, Kobe-shi, Hyogo Within Kawatetsu Kenzai Kogyo Co., Ltd. Inside Toku Metal Co., Ltd.

Claims (1)

[Claims] 1. A roll forming line in which panel materials are continuously passed through a plurality of cold roll forming stands arranged in a line, and the panel materials are successively formed into a predetermined shape. With the single drive means installed, the gears that drive the rolls of each cold roll forming stand are simultaneously rotated in the same direction through the idle gears that are located between the cold roll forming stands and rotate freely. In the conventional cold roll forming machine, the roll forming line includes a first forming line composed of cold roll forming stands arranged at the same pitch and a cold roll forming stand of the first forming line. The first molding line is installed on a single trolley with a second molding line that is shifted in pitch and is parallel, and the first molding line is between the first molding line and the second molding line. Roll forming a first forming line gear shaft connected to the roll shaft of the cold roll forming stand and a second forming line gear shaft connected to the roll shaft of the cold roll forming stand of the second forming line, A gear device for distributing roll driving force, which is alternately arranged in the extending direction of the line, is installed, and the gear shaft for the first forming line is for the first forming line fixed to drive each roll of the first forming line. The transmission gear and the idle gear for the second molding line, which is rotatably supported to transmit the rotation to the gear shaft for the second molding line, are coaxially mounted in parallel, and the gear for the second molding line is attached. The shaft has a second forming line transmission gear fixed to drive each roll of the second forming line by meshing with the second forming line idle gear, and the first forming line transmission gear. The idle gear for the first forming line, which is rotatably supported in order to transmit the rotation to the gear shaft for the other first forming line by meshing with the transmission gear for the forming line, is mounted coaxially in parallel. At the end of the roll driving force distribution gear device, there is installed a switching gear that selectively displaces so as to mesh with the transmission gear of the molding line gear shaft located at the extreme end and the idle gear. A speed reducer that transmits a rotational force and an electric motor that supplies a driving force to the speed reducer are mounted on the carriage, and when changing the size of the roll in the cold roll forming stand of the first forming line, or When changing the size of the roll in the cold roll forming stand of the second forming line, the carriage is in a direction orthogonal to the extending direction of the roll forming line. The running wheel which can be moved is equipped with 該台 vehicles molding line mobile cold roll forming apparatus according to claim.