JPS6357115A - Running cutter in roll forming - Google Patents

Abstract

PURPOSE:To perform the specified cutting without stopping a line as well as to aim at improvement in an operation rate of the forming line, by constituting this forming line with a work speed detecting part, a control part and a running working part making a cutter synchronize with a work speed. CONSTITUTION:When the work W formed by a roll forming machine 1 passes through a running working part 4 by way of a detecting part 2, a belt 25 is synchronously rotated. At this time, the speed is detected by both sensors 23 and 24, transmitting information to a converting device of a control part, and it is converted into length of the work W and transmitted to a judging device. Next, a transmitter commands a running start of a running device 4b and actuation of a die set 47 of a cutter 4c. At this time, a travel speed of the cutter 4c is made so as to synchronize that of the work W, for example, hydraulic pressure is adjusted by a computer whereby a motor 42 is rotated at the corresponding speed. With this constitution, accurate cutting operation is speedily and accurately performable.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a running cutting machine in roll forming processing.

[Prior art and problems to be solved by the invention] In general, slat materials and steel members for architectural shutters are manufactured by roll forming, but in the case of shutters in particular, Accordingly, the dimensions and number of workpieces will vary depending on the size, and accordingly, during roll forming, the dimensions and number of workpieces will vary, such as 60 pieces for A size, 50 pieces for 8 size, and 70 pieces for C size. Conventionally, the cutting dimensions of this workpiece were set by manually moving the workpiece abutment stopper 54 and die set start switch 55 installed on the table 53. In addition, the die set 51 of the cutting machine 50 receives a command from the start switch 55, and the die set 51 becomes in a state where it holds the workpiece, and while traveling with the workpiece due to the extension of the cylinder 52, receives a command from the cutting command switch 56 and starts cutting. However, in response to a command from the return switch 57, the die set 51 was returned to its original position by the restoring force of the cylinder 52, and this operation was repeated. Note that the turnover switch 58 in the figure is
This is a command switch for horizontally sweeping the cut workpiece and transferring it to the next process, and 59 is a screw shaft.

Because of this structure, it is not difficult to improve the dimensional accuracy due to the slip in the tR shape of the workpiece, the slip in the die set 51, the synchronous tracking accuracy of the cylinder 52, etc. After completing a series of cuts as described above, the molding line had to be stopped immediately in order to set the next size. Moreover, the line stop time for this dimension change is 17 to 1 of the net operating time.
The operating rate was as high as 8%, which was extremely poor. Furthermore.

It was also necessary to make two or three test cuts and adjust the position while checking the dimensions, and the material yield was not good.

[Means for solving the problem] In view of the above-mentioned circumstances, the present invention was devised for the purpose of providing a running cutting machine for roll forming processing that can eliminate these drawbacks. A detection unit that detects the speed of a processed and traveling workpiece; and a determination unit that compares and determines a conversion value from a conversion unit that converts information from the detection unit into the length of the workpiece and a set value input from an input key. A forming line is composed of a control section equipped with a control section and a traveling processing section equipped with a synchronized traveling means that receives commands from the control section and causes the cutting machine to travel in synchronization with the speed of the workpiece, and continuously cuts the workpiece to a predetermined length. 4. The present invention is characterized in that the dimensions are preliminarily determined by this configuration.

By inputting a number, you can cut the specified workpiece without stopping the molding line, which improves the operation rate of the molding line and allows you to obtain workpieces with good dimensional accuracy. This is what I did.

[Embodiment] Next, an embodiment of the present invention will be described based on the drawings. In the drawings, reference numerals 1, 2, 3 and 4 are a roll forming machine, a detection section, a control section, and a traveling processing section, which constitute a forming line for the workpiece W, respectively.

The roll forming machine 1, for example, rolls a strip of material wound around an uncoiler (not shown) into a plurality of sheets. This is a device that sequentially shapes the material into a predetermined shape using roller mills. Further, the detection section 2 is installed between the roll forming machine l and the traveling processing section 4, and the detection section 2 consists of a sensor section 21 and an operating body 22, and the upper surface of the operating body 22 is connected to the workpiece. The sensor section 21 is set at a position approximately at the height of the path of W.
The sensor section 21 and the actuating body 22 are configured to be able to move up and down with respect to each other, so that the workpiece W is held between the sensor section 21 and the operating body 22. The sensor section 21 is provided with two length measurement sensors 23 and 24 and a roller 29 that suppresses the workpiece W downward. In addition, an endless belt 25 is provided on the actuating body 22 and is stretched between four shafts 26, 27, and 28 that can be moved synchronously with the workpiece W by coming into close contact with the lower surface of the workpiece W. Note that the shafts 26 and 27 are pressed against the workpiece W side by a bullet or the like to prevent the workpiece W and the belt 25 from slipping, and the belt 25
The width of the belt 25 is wider than the width of the workpiece W, and a linear or dotted tape X (or mark) made of special material such as magnetic bamboo material or light reflective bamboo material is affixed to the edge of the belt 25. , the sensors 23 and 24 read the tape X to detect the traveling speed of the workpiece W.

The control section 3 includes a judgment means 32 that stores and judges signals inputted by the digital switch numeric keypad 31, and calculates the information read and sent by the sensors 23 and 24 to the speed of the workpiece W, and further controls the motor. Conversion means 33 for converting into the number of rotations and output means 34 are provided. The output means 34 issues a feed start command to the traveling processing section 4 at a time point, for example, 15 cm before the set size inputted from the conversion means 33, and the die set 47 of the cutting machine 4C displays the workpiece W at exactly the set size. It issues a command to activate the cutting operation when the point is reached.

The traveling processing section 4 includes an input means 4a for inputting the command outputted from the output means 34, and a synchronous traveling means 4b.

It consists of a cutting machine 4c. The input means 4a receives and inherits the signal from the control section 3, so that the synchronous traveling means 4b starts in synchronization with the forming traveling speed of the workpiece W a little before the predetermined dimension of the workpiece W and sends out the 14C for cutting. When the workpiece W reaches a predetermined size, the cutting machine 4c is operated to cut the workpiece W, and after the cutting machine 40 is operated, the cutting machine 4c returns to its original position. A motor 42 with a brake clutch 12a, which is a main part of the synchronous traveling means 11b, is installed horizontally above a machine frame 41 installed on the floor. For example, a servo motor is used as the motor 42, which can freely change the motor rotational speed by changing the oil pressure by changing the opening/closing degree of the valve at the entrance and exit of the hydraulic path in response to a signal from the input means 4a. A screw rod 43 is provided in parallel to the motor 42 and can be rotated forward and backward by the operation of the motor 42 via a speed reduction mechanism 42b. A slide cylindrical body 43a is screwed into this screw rod 13, and this cylindrical body 43a
is adapted to slide in the front and back direction by forward and reverse rotation of the screw rod 43. 44 is an auxiliary cylinder that assists the reciprocating movement of the cutting machine 4c via the cylindrical body 43a, and 45 is a dovetail-shaped guide provided on the top surface of the synchronous traveling means 4b, and this guide 45 supports the reciprocating movement of the cutting machine 4c. Guide slide transfer. Then, the motor 42 that received the Iko number is connected to the screw rod 43.
rotates at a predetermined speed to move the cylindrical body 13a, and the motor rotational speed is automatically adjusted and controlled so that the movement of the cylindrical body 43a is the same as the traveling speed of the workpiece W.

A base 46 is formed at the bottom of the cutting machine 4b of the traveling processing section 4, and is provided with dovetail-shaped engagement pieces 46a at symmetrical positions in the transport direction, and the engagement pieces 46a slide on the guide 45. It is designed to be engaged freely. Also, the engagement piece 16
A bracket/16b fixed to the cylindrical body 43a which is screwed into the screw rod 43 is provided below a. Furthermore, there is a lower metal in the center of the cutting machine 4c.

A hydraulic cylinder 48 is attached to the top of the die set 47, and a punch 48a is provided at the tip of the cylinder 48. When the workpiece W reaches a predetermined size, the cylinder 18 is extended by a signal, the punch 48a hits the die set 47, the die set 47 moves down and cuts the workpiece W, and the four corners of the die set 47 are fired. It is designed to return upward by aircraft 47c. still,
In the figure, 6 is a table on which the workpiece W advances.

In the embodiment of the present invention configured as described above, the work W formed by the roll forming machine 1 passes through the traveling processing section 4 via the detection section 2. Since the belt 25 is pressed downward and the lower surface of the work W is pressed upward, the belt 25 rotates in synchronization with the movement of the work W. At this time, the moving speed of the mark X on the edge of the belt 25 is detected by both sensors 23 and 24, and information from the sensors 23 and 24 is sent to the conversion means 33 of the control section 3. The converting means 33 receives the workpiece W speed information from the sensors 23 and 24, converts the average value into the instantaneous workpiece W length, and transmits it to the determining means 32. The determining means 32 has a predetermined length and number set in advance using the numeric keypad 31, and determines when the length is shorter than the predetermined dimension, for example, by 15], and when the predetermined dimension is reached. 4b is commanded to start running, and the cutting machine 4c is instructed to operate the Daicer 84. At this time, for example, a computer operates to adjust the hydraulic pressure so that the traveling speed of the cutting machine 4c is synchronized with the traveling speed of the workpiece W, and the motor 42 rotates at a corresponding speed.

In this way, there is no need to install stoppers or numerous switches in the path of the workpiece as in the past.

Moreover, since the length of the workpiece itself is measured, 7 degrees is extremely good for one dimension, and if you input several types of workpiece cutting plans in advance, you can continuously cut the workpiece without having to stop the processing line to change cutting dimensions. This makes it possible to significantly improve the operating rate of the cutting line, and by omitting trial cutting, it can greatly contribute to improving work efficiency and yield.

Furthermore, if the cutting dimensions and number of workpieces, which were conventionally input in the roll forming process, are input to one place in the control section 3, other control sections can be omitted.

[Operations and Effects] In summary, since the present invention is configured as described above, the traveling speed of the workpiece is directly detected and converted to the traveling speed of the workpiece, and the cutting machine is made to travel in synchronization with the traveling speed of the workpiece. Accurate cutting operations can be performed quickly and reliably without using stoppers or switches like in the past, and even when cutting dimensions are changed, workpiece movement can be continuously processed without stopping. .

[Brief explanation of the drawing]

The drawings show an embodiment of a running cutting machine for roll forming processing according to the present invention, in which Fig. 1 is a schematic side view of the main parts of the processing line, Fig. 2 is a block diagram, and Fig. 3 is a conventional cutting machine. FIG. 3 is a side view of the processing line. In the figure, ■ is a roll forming machine, 2 is a detection section, 23.2.1 is a sensor, 25 is a belt, 3 is a control section, 32 is a judgment means,
33 is a conversion means, 34 is an output means, 4 is a traveling processing section, 4
a is an input means, 4b is a traveling means, 4c is a cutting machine, 6 is a table, and W is a workpiece.

Claims (1)

[Claims] A detection unit that detects the speed of a traveling workpiece that has been rolled formed, and a conversion value from a conversion means that converts information from the detection unit into the length of the workpiece, and a set value input from the input key are compared and determined. A forming line is constituted by a control section equipped with a judgment means and a traveling processing section equipped with a synchronous traveling means that receives commands from the control section and causes the cutting machine to travel in synchronization with the speed of the workpiece, and cuts the workpiece into a predetermined length. A running cutting machine for roll forming processing, characterized by continuous cutting.