JPH0242333Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a roll forming machine that uses two rolls to roll and bend a metal sheet into a cylindrical shape and an arc shape.

(Prior Art) Conventionally, in a roll forming machine, as shown in FIG. 4, a second roll a made of an elastic body has both ends attached to a frame b.
A first roll d made of a rigid body is pivotally supported by a frame c, and is arranged above and parallel to a second roll a, one end of the first roll d is pivotally supported by a frame b, and the other end is The end portion is removably pivoted to a frame e provided on the upper surface of the frame c. Then, the frame e and the first roll d are separated from the molded product wound and bent around the first roll d, and the molded product is taken out manually or by a conveyance device.

(Problem to be solved by the invention) However, since the molded product formed by the roll forming machine is removed by separating the other end of the first roll from the frame, it takes time to take out the molded product. There was a problem. In addition, there was a problem in that the conveyance device became complicated when automation was attempted.

(Means for solving the problem) The present invention includes an upper first roll made of a rigid material and a lower second roll made of an elastic material,
A roll forming machine that bends and forms metal sheets into cylindrical and arcuate shapes, in which a first roll is movable in the axial direction, and a moving means is provided to move the first roll in the axial direction. .

(Function) The base end of the first roll, which is provided to be movable in the axial direction, is connected to a moving means, and the first roll is moved in the axial direction by the moving means, so that the first roll is wound and bent around the first roll. Take out the molded product.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

1 and 2 show a roll forming machine according to the present invention.

This roll forming machine has frames 1, 2, and 3 arranged on a base (not shown), and between the frames 1 and 2, a core roll 4 made of a rigid material and a pressure roll 5 made of an elastic material are arranged. A moving means 1 is provided between the frames 2 and 3.
2 is provided.

The moving means 12 includes two guide rails 13 and 14 whose ends are fixed horizontally and parallelly to the upper part between the frames 2 and 3, and the guide rail 1.
3 and 14 via bushes 17 and 18, and this sliding member 1
It consists of an air cylinder 10 that slides the air cylinder 6.

A cylindrical holder 9 is fixed to the substantially central portion of the back surface 27 of the sliding member 16 with a bolt 25, and this holder 9 is rotatably connected to the base end of the core roll 4.

The connection between the mandrel roll 4 and the holder 9 is as shown in FIG.
The roll housing 20 is inserted into the roll housing 20 provided through the holder 9, and both are locked with a key 21. It is fixed with a hexagon bolt 22 inserted through a hole 32.

Reference numeral 24 in the figure is a fixing ring that fixes the bearing 23 in the holder 9, and 29 is a fixing ring 24.
30 is a key 21 for fixing the bolt to the holder 9.
This is a bolt that fixes the

The holder 9 holds the frame 2 during roll forming.
It is fitted into a through hole 8 having approximately the same shape as the holder 9 provided in the holder 9, and this fitting part supports the load applied to the core metal roll 4.

The air cylinder 10 is fixed horizontally to the side surface of the frame 2, and the rod end 11 of the air cylinder 10 is connected to the end of the sliding member 16 so that the sliding member 16 slides left and right as the rod expands and contracts. ing. Note that the mounting position of the air cylinder 10 is not limited to this embodiment, and may be mounted anywhere as long as the sliding member 16 is slid from side to side. Moreover, the driving source for sliding the sliding member 16 is
In addition to the air cylinder 10, a hydraulic cylinder or a motor may also be used.

The base end 19 of the mandrel roll 4 is connected to the holder 9 as described above, and the other end is in contact with a clamp arm 15 provided on the upper surface of the frame 1.
The clamp arm 15 has two rollers (not shown) provided on the lower surface parallel to the axial direction of the mandrel roll 4.
presses the other end of the mandrel roll 4 from above and suppresses the upward force applied from the pressure roll 5.

Both ends of the pressure roll 5 are pivotally supported by a support member 6 and a support member 7 provided in the frames 1 and 2 so as to be movable up and down, and the support members 6 and 7 are connected to the hydraulic cylinder 2.
The support members 6 and 7 are moved up and down by the expansion and contraction of the rods, and the pressure roll 5 is also moved up and down.
The pressure acting between the two is adjusted. Further, one end of the pressure roll 5 is connected to a motor (not shown), and the pressure roll 5 is rotated by driving of the motor.

Next, the operation of the roll forming machine of the present invention will be explained.

Depending on the shape of the molded product to be molded, the diameter of the core roll 4 and the pressure roll 5 may be set in advance.
The pressure acting between the mandrel roll 4 and the pressure roll 5 is set by adjusting the position of the mandrel roll 4 and the pressure roll 5 using the hydraulic cylinders 26, 26. When a metal sheet is inserted between the rolls 4 and 5, the metal sheet is gradually fed between the rolls 4 and 5 by the rotation of the pressure roll 5 by the motor, and a cylindrical shape is formed on the outer peripheral surface of the core metal roll 4. The molded product is rolled and bent.

When the molded product is formed, the pressure roll 5 is moved downward by the hydraulic cylinders 26, 26, and the rod of the air cylinder 10 is extended, causing the sliding member 16 to slide to the left in FIG. 2
(see figure). At this time, the mandrel roll 4 connected to the sliding member 16 also moves in the same direction, and the mandrel roll 4
The rolled and bent molded product is left above the pressure roll 5 (see the two-dot chain line in FIG. 2). The molded product thus falls and is collected on a pedestal (not shown) provided at an appropriate location. By changing the direction of rotation of the pressure roll 5, the molded product can fall to either side with the pressure roll 5 in between.

Although not shown, when a molded product that has been wound and bent around a mandrel roll 4 is taken out by a transport device, a chuck portion of the transport device provided above the mandrel roll 4 is used to remove the molded product. By sliding the mandrel roll 4 after the outer peripheral surface is checked, the molded product is taken out from the mandrel roll 4, and the taken out molded product is carried to an appropriate position by a conveying device.

(Effect of the invention) Since the molded product is automatically taken out by moving the mandrel roll in the axial direction, the time for taking out the molded product is shortened. Additionally, it can be easily automated and the molded product can be smoothly sent to the next process.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the roll forming machine according to the present invention, FIG. 1 is a partially omitted perspective view showing the outline of the roll forming machine, and FIG. 2 shows the operation of the roll forming machine. FIG. 3 is a cross-sectional view showing the connection between the holder of the roll forming machine and the mandrel roll, and FIG. 4 is a partially omitted front view schematically showing a conventional roll forming machine. . 4... Mandrel roll, 5... Pressure roll, 12... Moving means.

Claims (1)

[Claims for Utility Model Registration] In a roll forming machine that bends and forms a metal sheet into a cylindrical shape and an arc shape, the first roll comprises an upper first roll made of a rigid material and a lower second roll made of an elastic material. A roll forming machine characterized in that the first roll is movable in the axial direction, and a moving means for moving the first roll in the axial direction is provided.