JPH02175156A - Marking device - Google Patents

Abstract

PURPOSE:To sharply form the outline of a mark by providing a shielding member having a prescribed through-hole capable of passing a marking agent between a material to be carried through a carrier path and an injection device for injecting the marking agent. CONSTITUTION:A marking device is constituted of a base part 1, an injection device 2 and a shielding member 3. The base part 1 is made boxlike and the interval of an inlet 10 and an outlet 12 is formed into a carrier path 14 capable of passing the material to be carried, e.g. a rod material W. 16 injection devices 2 are arranged e.g. at the angles of 22.5 degrees around the carrier path 14. The shielding member 3 is formed of an inner shielding member 14 and the outer shielding member 15. A cylindrical inner through-holes 43 are provided to the cylindrical part 40 of the member 4 in the circumferential direction at the intervals of e.g. 22.5 degrees at 16 pieces. A circular outer through-holes 53 are provided to the cylindrical part 50 of the member 5 similarly to the above-mentioned inner through-holes. The marking agent is sprayfully diffused and jetted through the nozzle 21 of the device 2 and squeezed by the member 5. Therefore marks formed on the outer peripheral face of the rod material W are made shape and easily discriminated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a marking device. This marking device can be used, for example, to mark rods, wires, etc.

[Conventional technology 1 For example, when marking a bar or wire,
Using a spraying device with a nozzle, the nozzle of the spraying device is brought close to the bar or wire while the bar or wire is stationary, and marking agent is sprayed from the nozzle to form a mark on the outer circumferential surface of the bar or wire. was.

[Problems to be Solved by the Invention] By the way, the marking agent ejected from the nozzle of the ejecting device tends to be dispersed in the form of a spray, so the outline of the mark formed on the bar or wire by adhering the marking agent is
It wasn't sharp enough.

The present invention has been made in view of this problem, and an object thereof is to provide a marking device that is advantageous in sharpening the outline of a mark formed on an object to be transported by applying a marking agent.

[Means for Solving the Problems] A marking device according to the present invention includes a base portion having a conveyance path through which an object to be conveyed passes, and a base portion having a predetermined interval around the conveyed object passing through the conveyance path. a plurality of ejecting devices arranged to eject a marking agent toward the conveyed object;
The shielding member is interposed between each ejecting device and the object to be transported, and is characterized by comprising a shielding member having a predetermined through hole through which the masking agent ejected by each ejecting device passes.

The base is a part that becomes a fixed part of the marking device. The base has a conveyance path through which objects to be conveyed pass.

A cleaning member that cleans the surface of the transported object on the entrance side of the transport path can be provided at the base. In this case, the surface of the object to be transported can be cleaned on the entrance side of the transport path prior to the marking process. As the cleaning member, for example, a contact method in which the cleaning member contacts the surface of the object to be transported, or a non-contact method in which a stream of air or the like is blown can be adopted.

Note that the object to be transported may be transported by being placed on a transport roller such as a V roller, or may be transported by arching or pushing the ends of the object.

i! ! ! The material to be transported may be, for example, a bar, wire, angle, channel, pipe, bloom, billet, slab, or other types of material.

A plurality of jetting devices are used to spray a marking agent onto an object passing through a conveyance path, and are held at a base at predetermined intervals around the object passing through a conveyance path.

The number of ejection devices can be selected as appropriate. As the ejecting device, for example, a nozzle system that ejects the marking agent from a nozzle using an airflow such as air can be adopted.

The shielding member is interposed between the ejection device and the object to be transported, and has a predetermined through hole through which the marking agent ejected by each ejection device passes. As for the shape of the shielding member, a cylindrical shape that covers the entire circumference of the object to be transported, or a plate shape that partially covers the object to be transported can be adopted. It is also possible to provide an adjustment mechanism that can adjust the distance between the shielding member and the ejection device. The number and shape of the through holes can be selected as appropriate. The through hole may have a structure in which the opening area is constant or a structure in which the opening area may be variable.

[Function] The function of the marking device of the present invention will be explained together with its usage method.

First, the object to be transported is passed through the transport path at the base.

At this time, when marking is to be performed, the jetting device is activated, and the marking agent is jetted from the jetting device onto the object being transported. Then, the marking agent passes through the through hole of the shielding member and is sprayed onto the moving object to adhere to the surface of the object, thereby performing the marking process.

[Example] Hereinafter, a marking device according to the present invention will be specifically described according to an example shown in the drawings.

A perspective view of the main part of this marking device is shown in FIG. 1, and a sectional view of the main part is shown in FIG.

This marking device is composed of a base 1, a jetting device 2, and a shielding member 3.

The base 1 is box-shaped and includes a plate part 11 having an inlet 10 and a plate part 13 having an outlet 12 and serving as an opening/closing door. The space between the inlet 1o and the outlet 12 is a conveyance path 14 through which the bar material W as an object to be conveyed passes.

A rubber member 15 is removably held at the entrance 10 by a stopper 16. A rubber member 17 is detachably held at the outlet 12 by a stopper 18. Therefore, the conveyance path 14 is covered at the front and rear by the rubber members 15 and 17, except for the portion through which the bar material W passes, thereby forming a marking chamber. A holding portion 19 having an inclined surface 19a is fixed to the plate portion 11.

Sixteen jetting devices 2 are arranged around the conveyance path 14 at an angle of 22.5 degrees. In addition, in FIG. 1, only three ejection devices 2 are shown, and the others are omitted. Each ejection device 2 is
The main body 20 includes a built-in solenoid valve, and a nozzle 21 that sprays marking agent toward the conveyance path 14 when the solenoid valve is activated. The main body 20G of each jetting device 2 is connected to a marking agent tank via a supply pipe (not shown), and therefore each main body 20 receives marking agent from the marking agent tank. As shown in FIG.
9a with a stopper 22. Therefore, the nozzle 21 of each jetting device 2 is inclined at an angle θ with respect to the plate portion 11.

The marking device of this embodiment is used in the process of detecting defects in the bar W, and marks the bar W for flaws and defects. Therefore, the marking device of this embodiment is arranged behind the flaw detection device in the enclosure for magnetically detecting flaws in the bar material W, and the main body 2 of each jetting device 2 is connected to the flaw detection device.
Solenoid valve 0 is connected. In this flaw detection device, the flaw detection sensor rotates around the rod 4AW at a speed of about 960 revolutions per minute, and when a surface flaw is detected on the bar W, a flaw signal is sent to the ejection device placed at the corresponding position. Output to 2. Then, the electromagnetic valve of the main body 20 of the jetting device 2 to which the flaw signal from the flaw detection device is input is activated, and the marking agent is jetted from the nozzle 21 of the jetting device 2.

The shielding member 3 is formed of an inner shielding member 4 and an outer shielding member 5 located outside the inner shielding member 4. The inner shielding member 4 is formed of a cylindrical portion 40 having a straight cylindrical shape with the same diameter from one end to the other end, and a seven flange portion 41 extending radially outward at one end of the cylindrical portion 40. . The inner shielding member 4 is detachably held on the plate portion 11 by screwing the stopper 42 into the screw hole 41a of the flange portion 41 of the inner shielding member 4 from the outside. The outer shielding member 5 also includes a solid conical tube portion 50 whose diameter increases from one end toward the other end, and a flange portion 51 extending radially inward at one end of the tube portion 50. It is formed of. As shown in FIG. 3, the flange portion 51 of the outer shielding member 5 is formed with a long hole 51a extending in an arc shape centered on the axis of the flange portion 51. As shown in FIG.

Then, the stopper 52 is inserted from the inside into the long hole 51a of the flange portion 51 of the outer shielding member 5, and the stopper 52 is inserted into the screw hole 11b.
By screwing the outer shielding member 5 into the plate portion 11, the outer shielding member 5 is held coaxially and removably at the outer side of the inner shielding member 4.

The cylindrical portion 40 of the inner shielding member 4 is provided with 16 circular inner holes 43 at intervals of 22.5 degrees in the circumferential direction, and the cylindrical portion 50 of the outer shielding member 5 is provided with circular outer holes 43. Sixteen through holes 53 are formed at intervals of 22.5 degrees in the circumferential direction. External hole 53
, the inner through hole 43 faces the nozzle 21 of the jetting device 2. Note that the diameter of the inner hole 43 is about 10 mm,
The diameter of the external hole 53 is about 15 mm.

Next, the function of the marking device according to this embodiment will be explained along with its usage method.

First, a conveyance roller A having a 7-shaped V groove A10 on its outer periphery.
Using a group of rollers arranged in series, a bar W with a circular cross section as an object to be transported is placed on the transport roller A.
is run in the direction of arrow x1 in a substantially horizontal direction at a conveying speed of about 1 to 3 m/Sec. Then, the tip of the bar W moves forward while bending the rubber member 15 and passes through the conveyance path 14 of the base 1.

At this time, as shown in FIG. 2, the rubber member 15 comes into contact with the outer circumferential surface of the bar W, so that the outer circumferential surface of the bar W is cleaned. Note that when the bar material W is transported by the transport roller A having ViflAlo, the bar material W is placed on the V-groove AIO, so that it is possible to avoid as much as possible the bar material W from shaking in the radial direction during transportation. This is convenient for bringing the axial center of the running bar W and the axial center of the inner shielding member 4 closer to each other or to make them coincide with each other.

By the way, when the flaw detection sensor of the flaw detection device discovers a flaw in the bar W, a flaw signal from the flaw detection device is input to the ejection device 2 corresponding to the position of the flaw.

Then, the solenoid valve of the main body 20 of the ejection device 2 is activated,
A marking agent is ejected from the nozzle 21 of the ejecting device 2 toward the outer circumferential surface of the running bar W.

Then, the marking agent passes through the outer hole 53 of the outer shielding member 5, further passes through the inner hole 43 of the inner shielding member 4, and is sprayed onto the running bar W to remove the scratches on the surface of the bar W. Attach to. Here, since the marking agent used in this example has quick drying properties, it hardens immediately.

Note that during the marking process, the conveyance path 14 is connected to the rubber member 15.
Since the marking agent is covered with the rubber member 17, scattering of the marking agent to the outside of the conveyance path 14 can be avoided.

The bar material W marked as described above further advances along the conveyance path 14 and is carried out from the conveyance path 14 via the outlet 12.

Note that since the marked bar W has surface scratches, the surface scratches are removed by cutting or other processing in a subsequent process.

Incidentally, the marking agent is ejected from the nozzle 21 of the ejection device 2 while being diffused in a spray-like manner, but in this embodiment, an outer shielding part @5 is interposed between the ejection device M2 and the bar W. As a result, the marking agent is squeezed out and does not spread and adhere to the outer circumferential surface of the bar W. Therefore, the mark formed on the outer circumferential surface of the bar W is sharp and easily distinguishable. It will be done. Therefore, even when the ejection device 2 is operated at a high speed to repeatedly perform marking at a high speed, it is advantageous to avoid a problem in which a - mark and another mark adjacent thereto are connected.

Furthermore, in this embodiment, an inner shielding member 4 is provided in addition to the outer shielding member 5, and the inner hole 43 is set to have a smaller diameter than the outer hole 53. The marking agent ejected while spreading is squeezed, thereby suppressing the spreading of the marking agent, and the mark formed on the outer peripheral surface of the bar W becomes even sharper.

In addition, in this embodiment, the nozzle 21 of the ejection device 2 and the external communication hole 5
3, the marking agent adheres to the peripheral edge of the external hole 53.

Even when the nozzle 21 and the inner through hole 43 face each other with insufficient accuracy, the marking agent adheres to the peripheral edge of the inner through hole 43.

Therefore, by observing the degree of adhesion, it is possible to ensure the accuracy of facing the nozzle 21 and the outer hole 53 and the facing accuracy of the nozzle 21 and the inner hole 43, which is advantageous for quality control.

Furthermore, even if the nozzle 21 of the ejection device 2 and the external passage hole 53 of the outer shielding member 5 are misaligned, in this embodiment,
If the stopper 52 of the outer shielding member 5 is loosened and the elongated hole 51a of the flange portion 51 of the outer shielding member 5 is shifted in this state, the position of the external through hole 53 of the outer shielding member 5 can be adjusted. , it is possible to ensure accuracy in the degree of facing between the external through hole 53 of the external shielding member 5 and the nozzle 21 .

In addition, there is a possibility that the jetting device 2 is activated and the marking agent is jetted from the nozzle 21 when the bar material W has not passed through the conveyance path 14; There is a problem that the marking agent crosses the conveyance path 14 and adheres to the jetting device 2 disposed on the opposite side, and the jetting device 2, especially its nozzle 21, becomes dirty. There is a problem that interferes with the ejection of water. In this regard, in this embodiment, each jetting device 2 is held on the inclined surface 19a of one holding part, and each nozzle 21 is inclined at an angle e with respect to the plate part 11. Therefore, even if the jetting device 2 is activated and marking agent is jetted from the nozzle 21 when the bar W has not passed through the conveyance path 14, the marking agent does not reach the jetting device 2 on the opposite side. , adheres to the wall surface of the cylindrical portion 40 of the inner shielding member 4. Therefore, it is possible to solve the problem of staining the ejection device 2 on the opposite side.

In addition, since each jetting device 2 is held on the inclined surface 19a of one holding part and the nozzle 21 is inclined at an angle e, the marking agent G jetted from the nozzle 21 of the jetting device "12" can be used as a bar material. It does not collide with the outer circumferential surface of W at right angles, and is therefore advantageous in avoiding scattering of the marking agent due to collision.

Furthermore, in this embodiment, the plate part 13 has a door structure that can be opened and closed, and the cylindrical part 50 of the outer shielding member 5 has a conical shape whose diameter increases as it approaches the plate part 13. , it is easy to insert a hand or arm deep inside the cylindrical portion 50, and therefore it is advantageous for loosening or removing the stopper 52 fixing the outer shielding portion 41J5. Therefore, the outer shielding member 5
It is advantageous to adjust the position of the external through hole 53 by appropriately turning it in the circumferential direction, thereby adjusting the facing accuracy between the external through hole 53 and the nozzle 21.

[Other Embodiments] Although the above-mentioned embodiments are applied to the marking of the bar material W having a circular cross section, the application is not limited thereto. It may be applied to the marking process. The embodiment shown in FIG. 4 basically has the same configuration as the embodiment described above. However, in this embodiment, the outer shielding member 7 has a square cylindrical shape, and the inner shielding member 8 has a square cylindrical shape that is substantially similar to the outer shielding member 7.

An external through hole 73 is formed in each wall of the outer shielding member 7, and an internal through hole 83 is formed in each wall of the inner shielding member 8 at a position facing the external through hole 73. Further, four ejection devices 2 are arranged at 90 degree intervals so as to face each wall portion of the outer shielding member 7. Also in the case of the embodiment shown in FIG. 4, the marking agent can be squeezed through the outer hole 73 of the outer shielding member 7 and the inner hole 83 of the inner shielding member 8, so that the marking agent can be squeezed out of the rod W. The marks formed on the outer circumferential surface of the bar W are sharp without spreading and adhering to the outer circumferential surface, and therefore the same effect as in the above embodiment can be obtained.

Furthermore, although the shielding member 3 has a double structure in the above embodiment, it may have a triple structure in which an intermediate shielding member is provided between the inner shielding member 4 and the outer shielding member 5.

In addition, in the embodiment shown in FIGS. 1 to 3, 16 spout bags M2 are arranged in a row at 22.5 degree intervals so as to go around the bar W once, but the spouting device If the number of ejection devices 2 is increased, the ejection devices 2 may be arranged in a staggered arrangement.

Furthermore, although not shown, the inner shielding member 4 and the outer shielding member 5
It is also possible to have a configuration in which the two can be moved relative to each other in a direction parallel to these axes.

[Effects of the Invention] According to the marking device of the present invention, the marking agent is ejected in the form of a spray from the ejecting device, but a shielding member is interposed between the ejecting device and the object to be conveyed. Since the marking agent passes through the holes in the shielding member, the marking agent does not spread and adhere to the surface of the transported object, and therefore the mark formed on the surface of the transported object is sharp and easy to distinguish. can get.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the present invention, in which FIG. 1 is a perspective view of the main part, FIG. 2 is a sectional view of the main part, and FIG. 3 is a front view of the outer shielding member. FIG. 4 shows another embodiment of the present invention and is a perspective view of the main parts. In the figure, 1 is a base, 14 is a conveyance path, 2 is an ejection device, 3 is a shielding member, 4 is an inner shielding member, 43 is an inner hole, 5 is an outer shielding member, and 53 is an outer hole. Patent applicant: Aichi Steel Co., Ltd. Representative: Patent attorney: Hiroshi Okawa Figure 3

Claims (1)

[Claims] (1) A base having a conveyance path through which an object passes, and a marking agent arranged on the base at a predetermined interval around the object passing through the conveyance path, and a marking agent directed toward the object. It is composed of a plurality of ejection devices that eject water, and a shielding member that is interposed between each of the ejection devices and the conveyed object and has a predetermined through hole through which the marking agent ejected by each of the ejection devices passes. A marking device characterized by: