JPH0641687Y2 - Orthogonal cutting cold forming roll - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a cold forming roll, and more particularly to a cold forming roll that can be shaped and cut simultaneously with molding.

[Conventional technology]

In the cold forming roll, one steel plate is bitten into the first roll stage, sequentially fed to the next roll stage, passed through the final roll stage, and formed.

[Problems to be solved by the device]

However, in the conventional forming roll,
When the steel sheet is fed into the first roll stage, it is fed from the peeled state, so that the front side of the steel sheet is fed without being accurately squeezed, and is accurately formed as it goes backward. For this reason, the dimension in the width direction often differs between the front end and the rear end of the molded product after completion of the molding process. That is, in the perspective view of the molded product 101 shown in FIG. 6, the dimension of the front end is L ₁ + l ₁ = L ₂ with respect to the dimension L ₁ of the rear end. l ₁ is the dimension that could not be drawn.

It is sufficient that the front and rear widthwise dimensions of the molded product fall within the permissible dimensions, but if they do not fall within the permissible dimensions, there is a risk that the product will lose its value as it is. In addition, when used as a molded product, if the front and rear widthwise dimensions are significantly different, it is difficult to adjust the degree of overlap with the adjacent molded product. On the other hand, the standard steel plate itself has a width difference depending on the manufacturer and the type of material. Even such a steel material is formed by the same forming roll, so that a dimensional difference in the width direction of the formed product is inevitable.

In order to prevent such a problem, the first roll stage and the next roll stage were spaced apart to make it easier to squeeze the front of the steel sheet, but this has not been completely solved. Is the current situation.

If the front and rear width dimensions of the molded product are too different, it is necessary to cut the molded product so that it fits within the allowable size with a special cutting machine after processing, which is costly and time consuming. there were.

The present invention has been proposed in order to solve the above problems, and provides a cold-forming roll capable of forming and cutting with high productivity, in which the front and rear width dimensions can be made uniform at the same time as the forming process.

[Means for Solving the Problems]

In order to solve the above problems, the present invention provides a plurality of rows of roll stages having a plurality of upper and lower forming rolls that rotate in opposite directions along the flow direction of the steel sheet, and sequentially feeds the steel sheet to the roll stages to form a predetermined shape. In the cold forming roll that performs forming, the width of the molded product sent to the upper and lower forming rolls of a predetermined roll stage, such as the final roll stage, of the roll stage This is a cold forming roll that can be shaped and cut by providing a rotary cutting device that continuously cuts the side edge.

[Action]

In such a cold-forming roll capable of being cut and shaped, the steel sheet is sent to the first roll stage and sequentially sent to the final roll stage for forming. And the molded product sent to the desired roll stage, by the rotary cutting device provided on the molding rolls above and below the roll stage,
The side edges are continuously cut to fit within the allowable dimensions.

〔Example〕

An embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows an overall schematic view of this embodiment, and FIG. 4 shows a perspective view of roll stage mounting details. The entire description will be given with reference to both figures.

A plurality of frame plates 11A are provided upright on a gantry 10 which is made of a steel material such as I-shaped steel and is provided in parallel. These frame plates 11A
The lower part is connected by the base plate 12 and the upper part is connected by the bolt 13 to the fixing bar 14, respectively.
The frame body 11 is configured as a whole.

A roll step is provided between the frame plates 11A.
The structure of the roll stage is shown in FIGS. That is, a plurality of upper and lower forming rolls 24 and 25 are fixed to the parallel upper and lower shafts 20 and 21 through continuous spill keys 22 and 23. Collars 26 and 27 are provided between the forming rollers 24 and 25, respectively. These upper and lower shafts 20,22, upper and lower forming rolls 24,25, collars 26,2
A roll stage is composed of 7 mag.

The upper and lower forming rolls 24 and 25 are attached while being alternately shifted so as to form a bent portion on the formed product W. That is, with respect to the plurality of upper forming rolls 24 attached to the upper shaft 20, the plurality of lower forming rolls 25 of the lower shaft 21 are provided.
Are respectively mounted between the upper forming roll 22 and the upper forming roll 22, that is, close to the collar 26 of the upper shaft 20. In this way, the upper and lower shafts 20,2
The steel material is fed into the gaps 2 (FIGS. 2 and 3) of the unevenness formed between the collars 26 and 27 of 1 and the upper and lower forming rolls 24 and 25 to be formed.

The roll stages having such a configuration are arranged along the feeding direction S of the steel material from the first roll stage 15, the second roll stage 16, the third roll stage 17, the fourth roll stage 18 and the fifth roll stage 19, Five rows are provided.

The size and shape of the upper and lower forming rolls 24 and 25 are
From the first roll stage 15 to the fifth roll stage 19, the squeezing is gradually changed to a sharp angle and the final finished product is an accurate product. However, they are described as the same in the description.

The upper and lower shafts 20 and 21 have upper and lower bearings 2
It is rotatably supported by 8,29. These bearings 28 and 29 are
Both ends of the bearings 28, 29 are formed so as to sandwich the frame plates 11A, 11A.

A level adjusting bolt 30 for adjusting the height of the lower bearing 29 and the like is connected to the lower bearing 29.
Is fixed to the gantry 10 via a block 31.

Reference numeral 32 in FIG. 4 is a lock nut.

On the other hand, a lifting bolt 33 is attached to the upper bearing 28. The lifting bolt 33 allows the upper bearing 28 and the like to move up and down, and adjusts the gap 2 between the upper and lower forming rolls 24 and 25. The lifting bolt 33 extends through the fixed bar 14 and extends upward, and the upper bearing 28
It is connected to an elevating means (not shown) for vertically moving the above.

Reference numerals 34 and 34 in FIG. 4 denote a pair of lock nuts mounted so as to sandwich the upper and lower surfaces of the fixing bar 14 of the lifting bolt 33, and 35 is located on the bearing 28 side of the lifting bolt 33. It is an attached lock nut.

Then, after loosening the lock nuts 34, 34, etc. and moving the lifting bolt 33 up and down for adjustment, the lock nut 3
It is designed to be fixed by tightening 4,34.

An upper gear 36 and a lower gear 37 are provided at one end of the upper shaft 20 and the lower shaft 21 of the first roll stage 15 to the fifth roll stage 19, respectively, and both gears mesh with each other.

The lower shaft 21 of the roll stage 19 in FIG. 5 is provided with a driven sprocket 38 between a lower gear 37 and a lower bearing 29. The driven sprocket 38 is connected by a drive transmission chain 41 to a drive sprocket 40 directly connected to a motor 39 main shaft. The motor 39 is provided on the frame 10 near the fifth roll stage 19.

A front / rear transmission chain 42 is stretched between the lower gear 37 and the driven sprocket 38 of the lower shaft 21 of the fifth roll stage 19 via a sprocket (not shown). The forward-reverse transmission chain 42 is, on the other hand, connected to the sprocket of the lower shaft of the fourth roll stage 18.

Similarly, the fourth stage 18 and the third stage 17, the third stage 17 and the second stage 16, the second stage
The step 16 and the first step 15 are connected by a front-rear transmission chain.

The rotary cutting device 43 is provided at the final roll stage of each roll stage having such a configuration. That is, FIG. 3 and FIG.
As shown in FIGS. 5 and 5, the rotary cutting device 43 is composed of an upper blade 44 fixed to the upper forming roll 24 and a lower blade 45 fixed to the lower forming roll 25.

The upper blade 44 is formed in a disc shape having an outer diameter larger than the outer diameter of the upper forming roll 24. Then, the upper blade 44 is attached to the upper shaft by the spill key 22 and the stopper 46.
It is fixed to 20 and is provided so that its side surface is in close contact with the side surface of the upper forming roll 24.

The lower blade 45 is formed in a cylindrical shape having the same diameter as the outer diameter of the collar 27 fitted in the lower shaft 21. The lower blade 45 is fixed to the lower shaft 21 by the spill key 23 and the support collar 47, and is provided in close contact with the collar 27.

One end surface of the lower cutting tool 45 is in surface contact with one end surface of the upper cutting tool 44, a shearing force is generated between the two cutting tools, and an unnecessary portion out of the allowable size is cut.

The upper and lower blades 44, 45 are made of hardened steel or the like, which is hardened on a part or all of the outer periphery of the blade.

Note that reference numeral 4 in FIG. 5 is a stopper that restricts the support collar 47, and is attached to the lower shaft 21 by screwing or the like.

A scrap discharge duct 48 is provided near the 19th position on the final roll stage.
Is provided. The discharge duct 48 discharges the scrap 100 cut by the rotary cutting device 43 to the outside. And this discharge duct 48 is a rotary cutting device.
It is provided so as to penetrate the gantry 10 from the vicinity of 43.

In front of the first roll stage 15, a front table 50 is laid across the parallel mounts 10, 10. This front table 50
The conveyed steel material is placed and sent to the first roll stage 15.

At a position adjacent to the fifth roll stage 19 of the final roll stage, a product receiving table 51 is provided between the mounts 10 and 10. The product receiving table 51 is a table that receives a work that has passed through each roll stage and is sent as a molded product W.

The cold forming roll 1 that can be shaped and cut has the above-described configuration.

Next, the operation of this embodiment will be described.

The motor 39 is driven to rotate the drive sprocket 40.
The drive transmission chain 41 is rotated by the rotation of the drive sprocket 40.
The driven sprocket 38 rotates through the 5th roll stage 15
The lower shaft 21 of rotates.

When the lower shaft 21 of the fifth roll stage 15 rotates, the upper gear 36 rotates via the lower gear 37 attached to the lower shaft 21. At the same time, this lower shaft
Front-rear transmission chain stretched from 21 to the fourth roll stage 18
The fourth roll stage 18 rotates via 42.

Thus, the fourth roll stage 18 to the third roll stage 17, the third roll stage 17 to the second roll stage 16, and the second roll stage 16 to the first roll stage
The rotation is transmitted to the roll stage 15. At the same time, the rotation is transmitted from the lower shaft 21 of each roll stage to the upper shaft 20 via the upper and lower gears, and the respective roll stages 15 to 19 are rotated.

Then, the lifting bolt 33 is moved up and down by a lifting means (not shown),
Adjust the gap between the upper and lower forming rolls 23, 24. Next, the steel sheet to be formed is transported to the front table 50 by a transport device,
Feed into the first roll stage 15. The steel sheet passes through the gap between the upper and lower forming rolls, is bent, and is sequentially sent to the second, third, and fourth roll stages 16 to 19.

The steel sheet sent from the fourth roll stage 18 to the fifth roll stage 19 is an unnecessary portion on the side edge of the steel plate, that is, scrap 100.
Is cut by a rotary cutting device 43 provided on the fifth roll stage 19. This scrap 100 has 4 scrap discharge ducts
It is discharged to the outside at 8. The molded product obtained by cutting the scrap 100 is sent to the product receiving table 51, and then carried out by the carrying-out means.

When the molded state of the molded product, that is, the sharpness of the bent portion, etc. is not as predetermined, readjust the gap between the upper and lower molding rolls 24 and 25, and thereafter repeat the molding process by the same action as described above. returned.

According to this embodiment as described above, the following effects can be obtained.

That is, in this embodiment, the final roll stage is provided with a rotary cutting device that cuts unnecessary portions out of the allowable size. For this reason, it has become possible to obtain a molded product in which the front end and the rear end have substantially the same width dimension.

There is no need to increase the number of roll steps to improve the front end drawing. Therefore, it became a cheap machine in terms of cost.

The unnecessary portion does not have to be cut later, and therefore, a dedicated cutting machine is not required, it is economically inexpensive, and time is not wasted.

Produces the effect.

It should be noted that the present invention is not limited to the above-described embodiments, but includes the following modifications and the like.

That is, in the above-described embodiment, the rotary cutting device for cutting the unnecessary portion of the molded product is provided only on one side of the molded product, but it is also possible to cut the unnecessary portion on both sides.

In addition, the specific structure, shape, and the like when implementing the present invention may be other structures and the like as long as the object of the present invention can be achieved. Further, in the embodiment shown in the drawings, the case where the rotary cutting device is provided in the final roll stage is shown, however, the provision of the rotary cutting device is not limited to the final roll stage, and the desired roll stage may be provided depending on the shape of the molded product. May be provided.

[Effect of device]

As described above, according to the cold forming roll with a shaping cutting device of the present invention, the width dimension before and after the molded product can be made uniform at the same time as the molding process, and the productivity is high. .

[Brief description of drawings]

1 to 6 respectively show an embodiment of a cold forming roll with a shaping cutting device of the present invention, FIG. 1 is an overall schematic view, and FIG. 2 is a sectional view taken along the line I--I in FIG. FIG. 3 is a sectional view taken along the line II-II in FIG. 1, FIG. 4 is a detailed perspective view of the roll stage attachment, FIG. 5 is a sectional view of the roll stage, and FIG. 6 is a perspective view of the molded product. 10 ... Stand, 11 ... Frame, 11A ... Frame plate, 20 ... Upper shaft, 21 ... Lower shaft, 24 ... Upper forming roll, 25 ...
… Lower forming roll, 28 …… Upper bearing, 29 …… Lower bearing,
36 …… upper gear, 37 …… lower gear, 43 …… rotary cutting device, 48 …… exhaust duct, 50 …… front table, 51 …… product receiving table, 100 …… scrap.

Claims (1)

[Scope of utility model registration request] 1. Cold forming in which a plurality of rows of roll stages having a plurality of upper and lower forming rolls that rotate in opposite directions along the flow direction of the steel sheet are provided and the steel sheets are sequentially fed into the roll stages to perform a forming process of a predetermined shape. In the roll, the side edges of the molded product are continuously cut so that the width of the molded product sent to the upper and lower molding rolls of the last or intermediate roll stage of the roll stages is within a predetermined dimension. A cold-forming roll capable of forming and cutting, which is equipped with a rotary cutting device.