JPH0533342Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a marking device that marks along the end surface of a plate-shaped product, and in particular a roll contact device in which a guide roller and a marker head are suspended like a pendulum. Concerning things of type.

[Conventional technology]

For thin plate materials such as aluminum (hereinafter referred to as Al) rolled products, defects on the product surface are an important quality factor during secondary processing or secondary processing, so conventionally inspections have been made for the presence of these defects. There is. When performing this inspection, it is generally done visually during line threading or by using light or the like. In order to make it easy to read defects in the inspection process and to avoid any inconvenience in forming processed products,
Marking is performed using ink or the like at a fixed position several millimeters from the edge of the plate.

As such marking methods, non-contact type and contact type are conventionally known. For example, in the non-contact type, a sensor detects the edge of the plate,
There is a method of marking using a so-called BPC device, which uses this detection signal to cause a marker head to follow the meandering of the board using a cylinder equipped with a servo valve.

The contact type also uses an air cylinder to constantly press a roller against the edge of the product to make the marker head follow the meandering of the plate, thereby marking, or a compression or tension spring that expands and contracts. There is a method of marking while making the marker head follow the meandering of the board.
Furthermore, other methods for this contact type include a method in which the above-mentioned cylinder and spring are combined, or a weight type in which a weight is used in place of the spring.

Here, FIG. 4 shows a conventional weight type device. A pair of guide rods 22 are horizontally arranged between a pair of support columns 21 erected on a floor surface 20. A support member 23 is attached to the guide rod 22 so as to be movable in the axial direction.
A roller 24a and a marker head 24 are mounted on the top of the marker 3.
Support rod 25a of bracket 25 supporting b
is slidably supported. In addition, the support member 2
An L-shaped link 26 for pressing the bracket 25 is rotatably disposed at the lower end of the bracket 3, and a weight 27 is attached to the tip of the lateral side of the link 26. Further, a marker device main body 28 is attached to the support column 21, and the marker device main body 28 and the marker head 24b are connected by a flexible cable 29.

In this conventional device, the support member 23 is moved according to the width of the plate, and the upper end of the link 26 presses the bracket 25 in the direction of the plate edge by the weight 27, whereby the roller 24 comes into contact with the end surface of the plate W. As a result, the marker head 24b is positioned at a predetermined position from the end surface of the plate W to perform marking.

[Problem that the invention attempts to solve]

However, the conventional non-contact and contact marking methods described above have the following problems.

(i) For non-contact type, the marking position may be 0.1% of the set position due to the adjustment and performance of the instrumentation part.
There is a problem with the deviation of about 1 mm, and the equipment is expensive.

(ii) For contact type, whether the cylinder, spring, or weight type, if the product is steel or aluminum or thick plate,
That is, it can be used without any problem if the pressing force on the end face is not adjusted very strictly. However, Al
It is very difficult to adjust the pressing force of the rolls when the sheet is thin or when the sheet passing speed is high. In other words, in the case of a thin plate, even if tension is applied, the edge portion will be extremely weak, like thin paper, due to differences in plate thickness, etc., so the pressing force of the roll will be small.
and must be precisely regulated. On the other hand, at high speeds, roll wear increases, making it impossible to reduce the roll diameter very much, which tends to increase the weight of the head, and as the weight increases, the force required to move the roll increases. As a result, it becomes difficult to adjust the pressing force when using such a thin plate at high speed. If the pressing force is too weak, the roll and the edge part will separate and errors will occur in the marking position, while if the pressing force is too strong, the plate edge part will be bent.

The purpose of this invention is to solve these conventional problems and provide a pendulum-type roll contact type marking device that can accurately mark even thin Al plates without causing bending of the edge of the plate. It is in.

[Means for solving problems]

The marking device according to this invention has a guide roller and a marker head that are in rolling contact with the end surface of a plate-shaped product attached to a support member, and is suspended from the base of the device by a hanging rod so as to be swingable in a direction perpendicular to the product traveling direction. Two spring members are placed between the device base and the hanging rod to support the weight of the swinging members such as the marker head and rollers, and when the hanging rod is tilted, the difference in tension between the two spring members causes the guide roller to move. It is characterized by the fact that it is pressed against the end surface of the board.

[Effect]

In this invention, the guide roller and marker head are suspended by a hanging rod, and their weight is supported by a spring member, so there is no problem of increased weight of the head.
The diameter of the guide roller can be made large, and the sheet passing speed can be increased. In addition to using a pendulum type, the weight of the head is supported by a spring in an almost weightless state as mentioned above, so the resistance when the marker head swings is small, and as a result, the pressing force is extremely small and can be precisely adjusted. Because I can,
The roll contact type can also be applied to materials with weak edges such as Al thin plates, and the positioning accuracy of markings can be improved.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 to 3 show a marking device according to an embodiment of the present invention. In the marking device 1 of this embodiment, two moving guide bars 2 are installed horizontally between pillars (not shown) erected on the floor, and in a direction perpendicular to the traveling direction of the sheet W, which is a thin Al plate. ing. The guide bar 2 has an oil pusher 3 at the lower end of a column (device base) 4 extending vertically upward.
A set bolt 5 for positioning and regulating the position of the seat W in the width direction is screwed into the lower end of the support post 4.

In addition, a hinge pin 7 is inserted into and fixed to a support bracket 6 fixed to the upper end of the support column 4 in the traveling direction of the seat W, and the upper ends of two hanging rods 8 are swingably supported at both ends of the hinge pin 7. The hanging rod 8 is swingable in a direction perpendicular to the direction in which the sheet W travels. Also,
A mounting bracket 10 is installed between the lower ends of the two hanging rods 8, and a guide roll 11 is rotatably supported in the center of the mounting bracket 10 in the same axial direction as the hanging rod 8. ing. An annular guide groove 11a is recessed in this guide roll 11, and the bottom surface of the groove 11a is formed on the sheet W.
It is formed flat so that its edges are rolled into contact.
Further, the mounting bracket 10 is extended to the right in FIG. 3, and a marker head 12 for marking the sheet W is attached to this extension, and this marker head 12 is connected to a head body (not shown) by a flexible tube 12a. has been done.

Further, a support bracket 13 is fixed to the center of the support column 4 and extends in a direction perpendicular to the traveling direction of the sheet W, that is, in the swinging direction of the suspension rod 8, and a suspension bracket 14 is slidably attached to the approximately center of the suspension rod 8. The suspension bracket 14 is movably mounted, and a set bolt 15 is screwed into the suspension bracket 14 for positioning and regulating its vertical position. Two tension springs (spring members) 16 are stretched between the suspension bracket 14 and the support bracket 13 to support the weight of the guide roll 11, marker head 12, mounting bracket 10, and suspension rod 8. By adjusting the vertical position of the hanging bracket 14 with the set bolt 15, the tension spring 1
6 tension is adjusted.

Next, the effects of this embodiment will be explained.

In the device of this embodiment, first, the tension spring 16
By adjusting the position of the hanging bracket 14 movably attached to the hanging rod 8, the tension of the hanging rod 8 can be adjusted to approximately match the weight of the swinging members such as the hanging rod 8, the guide roller 11, the marker head 12, etc. As a result, these swinging members are held in a substantially weightless state. In reality, the head section is not made completely weightless, but a weight corresponding to the rotational friction force of the hanging hinge pin 7 is left. Next, the support 4 movably attached to the two guide bars 2 is manually moved according to the product width (board width), and the support 4 is moved against the edge of the sheet W.
Position the suspension rod 8 so that it is inclined at an angle of several millimeters, and fix it with the set bolt 5. Then, the roller 11 comes into contact with the end surface of the sheet W with a pressing force equal to the difference in tensile force caused by the difference in length between the two tension springs 16 due to the above-mentioned angle. When marking is started in this state, the roller 11 moves together with the marker head 12 following the meandering of the sheet W, and marking is performed at a predetermined position from the end surface of the sheet W.

In the marking device of this embodiment as described above,
Since the marker head 12 and the guide roller 11 are swingably supported by the hanging rod 8, and the weight of the head and the rod are supported by the tension spring 16, the problem of increase in the weight of the head does not occur. Since there is no guide roller 11
It is possible to easily increase the diameter of the plate, and therefore it is possible to cope with an increase in the sheet passing speed. Furthermore, since the weight of the head section is made substantially weightless, the resistance when the head section moves can be reduced, and therefore the pressing force can be set to the minimum necessary. As a result, it is possible to mark even thin Al plates without bending the edges of the product, and there is no misalignment due to adjustment or performance of the instrumentation section unlike in the case of non-contact types. Accuracy can be improved compared to contact type.

In addition, when the marker head 12 is of a hanging type as described above, the guide roller 11
Although the contact position between the guide roller 11 and the product edge will fluctuate in the vertical direction, in this structure, the guide roller 11
Since the distance between the contact point and the fulcrum is increased, vertical fluctuations in the contact position can be reduced. Further, the thrust force acting on the hanging rod 8 etc. in the direction of movement of the product via the guide roller 11 is minute in the case of an Al thin plate and can be ignored.

Furthermore, if the roller pressing force is weakened as described above, there is a concern that the head may fly off due to meandering of the product, but the meandering of the product itself is mainly caused by undulations. , there is no problem of splash phenomenon.

[Effect of idea]

As described above, according to the pendulum type roll contact type marking device according to the present invention, the guide roller and marker head are suspended and their weight is supported by the spring, so that the pressing force can be minutely adjusted. The contact type can also be applied to the rollers, which has the effect of improving the positional accuracy of markings.Also, since the diameter of the roller can be increased, it has the effect of being able to cope with higher sheet passing speeds.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a marking device according to an embodiment of the present invention, Fig. 2 is a side view of its main parts, Fig. 3 is a front view of its main parts, and Figs. FIG. In the figure, 1 is a marking device, 4 is a support (device base), 8 is a hanging rod, 10 is a support member,
11 is a guide roller, 11a is a guide groove, 12 is a marker head, and 16 is a spring member.

Claims (1)

[Scope of utility model registration request] A marking device for marking along the end surface of a plate-shaped product, which has a groove for guiding the end surface, a guide roller that makes rolling contact with the end surface, and a marker head for marking the plate-shaped product are attached to a support member, and this support is provided. Two spring members that support the weight of the guide roller, marker head, and supporting member are suspended from the upper part of the device base extending in the vertical direction so as to be swingable in a direction perpendicular to the traveling direction of the plate-shaped product using a hanging rod. is provided between the base of the device and the hanging rod, and the guide roller is made to follow the end surface of the plate-shaped product by the tension difference between the two spring members due to the inclination angle of the hanging rod. Pendulum type roll contact type marking device.