JPH079180Y2 - Metal tag for automatic marking machine - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to a metal tag for an automatic marking machine, which relates to improvement of a metal tag used as a marking material in an automatic marking machine for marking arbitrary characters and symbols by stamping. is there.

(Prior Art) In the steel industry, information on products in final products such as steel bars, wire rod coils, hot rolled coils, etc., such as steel types, component values,
As shown in FIG. 9, a bill-shaped metal object called a metal tag 1 is generally used to indicate the manufacturing date, manufacturing lot, weight and the like. The metal tag 1 is displayed by stamping from the viewpoint of durability of information display, visibility of display content, etc. The stamping is performed by an automatic stamping machine as shown in Japanese Patent Publication No. 52-36049. It is generally used from the viewpoints of stamping speed, labor saving, and the like.

Further, also in the automobile manufacturing industry, a similar metal tag is used to indicate the model of the automobile, the date of manufacture, etc., and an automatic marking machine is generally used for the marking.

As shown in FIG. 10, the metal tags 1 used in the automatic marking machine 7 need to be automatically selected from several kinds of arbitrary metal tags 1. Therefore, a plurality of magazines 8 are stored in a stacked state for each kind. Has been done. In the automatic marking machine, stamping is performed for each metal tag, so that the metal tags 1 need to be taken out from the magazine 8 in units of one sheet.

The metal tag 1 is taken out from the magazine 8 by a take-out section 9 provided above the magazine 8 as shown in FIG. A rubber suction head 10 is attached to the tip of the take-out portion 9, and the metal tag 1 is taken out by a vacuum pump (not shown).

(Problems to be solved by the invention) On the other hand, in the method of manufacturing the metal tag 1 to be taken out, the iron plate is punched into the shape of the metal tag. Therefore, as shown in FIG. A burr 13 may occur due to deterioration of a cutting tool used during punching. Further, the metal tag 1 manufactured by punching is coated with rust preventive oil (not shown) from the viewpoint of rust prevention, laminated, packed, and used after storage.

The metal tag stored in the magazine of the automatic stamping machine is the 12th
As shown in the figure, the metal tags 1 stick to each other due to the influence of the burr 13 and the rust preventive oil, and a plurality of metal tags 1 are taken out when picked up by the suction head 10, so the metal tags 1 drop during transportation. It causes problems such as poor transport and damage of the stamped part due to simultaneous stamping of a plurality of overlapping metal tags 1, resulting in problems such as a reduction in the operating rate of the automatic stamping machine and an increase in repair costs.

Taking out the metal tags one by one in the automatic marking machine shown in FIGS. 10 (a) and 10 (b) is an essential function from the viewpoint of the structure of the apparatus. For this reason, conventionally, as shown in FIG. 13 (a), in the take-out section 9 for taking out the metal tag 1 from the magazine 8, an air cylinder 14 or the like is provided above the suction head 10 and both edges of the metal tag are pressed down. By providing the member 15 and operating the air cylinder 14 in a state in which the metal tag 1 is adsorbed, the metal tag 1 is curved as shown in FIG. A device having a function of separating one metal tag 1 has been devised.

However, even when the device shown in FIGS. 13 (a) and 13 (b) is used, when the metal tag to be engraved is thin or the burr exceeds the thickness of the metal tag, a plurality of metal tags are bent in close contact with each other. Therefore, it is impossible to completely separate a plurality of metal tags.

The present invention has been made in view of such a problem, and by providing unevenness on the surface of the metal tag in the manufacturing process of the metal tag stored in the magazine of the automatic stamping machine in a stacked state, one sheet from the magazine can be surely printed. It relates to metal tags that can be taken out for each.

(Means for Solving the Problem) The present invention provides a metal tag used in an automatic marking machine for marking arbitrary characters / symbols by stamping, wherein one surface of the metal tag has a conical or pyramidal convex portion and the convex portion. One or a plurality of pairs of concavo-convex paired with a conical or pyramidal recess having a bottom diameter smaller than that of the convex portion are provided on the other surface of the section and the position symmetrical in the thickness direction at point-symmetrical positions with respect to the plane direction center of the metal tag. It is a metal tag for automatic marking machines characterized by the fact that

(Operation) In the present invention, by providing the metal tag with unevenness, it is possible to prevent the metal tags from sticking to each other even when the metal tags are stacked in the magazine of the automatic marking machine.

Further, the present invention is a metal tag having a function of making it possible to take out from the magazine one by one by providing the unevenness on the surface in the manufacturing process of the metal tag.

(Example) The contents of the present invention will be described in detail below with reference to the drawings.

FIG. 1 (a) is a plan view of the metal tag 1 of the present invention.
FIG. 1B shows a side view of the metal tag 1 of the present invention. This is one in which the convex portions 2-1 are provided at the four corners of the metal tag 1. Here, the convex portion 2-1 provided on the surface of the metal tag 1
In the case of punching the metal tag 1, it is possible to perform the uneven processing at the same time as the punching, by performing the uneven processing in advance on the mold (not shown) for punching the metal tag 1. Since no new step for providing -1 is required, the manufacturing cost does not increase.

As shown in FIG. 2, the position of the convex portion 2-1 is selected so as not to be embossed in order to maintain the clarity of the embossed character 3. At the same time, in consideration of the balance when the metal tag 1 is stored in the stacking magazine of the automatic marking machine, a position symmetrical with respect to the center 4 in the plane direction of the surface of the metal tag is selected. Further, regarding the number of the convex portions 2-1, the convex portions 2-1 are provided at positions where the above-mentioned stamp character 3 is not stamped and which are point symmetrical with respect to the center 4 in the plane direction of the metal tag surface. The number is not limited, but 1 to several are preferable from the viewpoint of appearance.

As shown in FIGS. 3 (a1), (a2), FIG. 3 (b1), and (b2), the shape of the convex portion 2-1 is a cone or a pyramid shape that is thin in the convex direction, and has a convex shape. A concave portion 2-2 having the same shape as the convex portion 2-1 is provided at a position symmetrical to the portion 2-1 in the thickness direction. The conical or pyramidal bottom diameters of the convex portion 2-1 and the concave portion 2-2 are smaller in the concave portion 2-2 than in the convex portion 2-1. It is inevitably provided by subjecting a metal tag having a thickness to concavo-convex processing at the same time as the punching. This recess 2-
The reason for providing 2 is that, as shown in FIG. 4, when the metal tags 1 are stored in the magazine 8 of the automatic stamping machine in a stacked form, the space 16 formed between the metal tags 1 due to the influence of the convex portion 2-1 provided on the metal tag 1 This is to minimize the reduction of the number of magazines 8 stored.

As shown in FIG. 5 (a), even if the convex portion 2-1 provided on the metal tag 1 is convex toward the reading surface 5 side of the embossed character 3, as shown in FIG. 3 may be convex on the back surface 6 side of the reading surface 5 side.

FIG. 6 (a) shows the relationship between the height of the convex portion 2-1 provided on the metal tag 1, the thickness of the metal tag 1 and the frequency of taking out the metal tags 1 in the automatic marking machine for each plurality, which the inventors found out through experiments. Show. Similarly, FIG. 6 (b) shows the size of the convex portion 2-1 (the size of the surface of the metal tag 1) and the frequency of taking out a plurality of sheets, which the inventors found by experiments. From FIGS. 6 (a) and 6 (b), it can be seen that the effect is great if the height of the convex portion 2-1 is 80% or more of the thickness of the metal tag 1. Further, regarding the size of the convex portion 2-1, it can be seen that there is no difference in effect depending on the size as compared with the height.

Further, as shown in FIGS. 7 (a), (b), and (C), the present invention can be applied to the metal tag 1 having any shape such as a square, a circle, and an ellipse.

(Effect of the Invention) The metal tag of the present invention has the above-mentioned characteristics, and when the metal tags 1 are stored in a stacked state in the magazine 8 of the automatic marking machine as shown in FIG. Since a minimum required space 16 is created by the convex portion 2-1, the metal tags 1 are brought into close contact with each other due to the influence of burrs 13 and rust-preventing oil generated on the metal tag 1, and when the suction head 10 takes them out. There is no possibility that a plurality of metal tags 1 will be taken out, and some of the plurality of taken-out metal tags 1 will fall. Improper transportation or a stamped part due to simultaneous engraving of a plurality of overlapping metal tags 1 It does not cause a failure such as damage to.

FIG. 8 shows the relationship between the number of abnormal occurrences of the automatic marking machine when the metal tag according to the present invention is used and when the conventional metal tag is used, which is confirmed by the inventors through experiments. As is clear from FIG. 8, by using the metal tag of the present invention, it is possible to improve the operation rate of the automatic marking machine and reduce repair costs.

As described above, the present invention is extremely effective industrially.

[Brief description of drawings]

FIG. 1 is a plan view of the appearance of the metal tag of the present invention, and FIG.
3a (a1) and (b1) are explanatory side views of the positions on the plane of the protrusions provided on the metal tag. Side views for explaining the shape of the protrusions provided on the metal tag are shown in FIGS. 3a2 and 3b2. The same plan view,
FIG. 4 is an explanatory view of the metal tag stored in the magazine of the automatic marking machine, FIGS. 5 (a) and 5 (b) are direction explanatory views of the convex portion provided on the metal tag, and FIG. 6 (a) is Fig. 6 (b) is a graph showing the height of the convex portion of the metal tag, the thickness of the metal tag, and the frequency of taking out multiple metal tags with the automatic marking machine. A graph showing the frequency, FIGS. 7 (a), (b), and (c) are plan views of the appearance of the metal tag of the present invention (example), and FIG. 8 is an automatic marking machine using the metal tag of the present invention and the conventional metal tag. Graph showing the frequency of occurrence of abnormalities in
FIG. 9 is a plan view showing an example of a metal tag used to display a steel material, FIG. 10 (a) is a plan view showing an example of an automatic marking machine, FIG. 10 (b) is a side view of the same, and FIG. Fig. 12 is an external perspective view of a stamped metal tag. Fig. 12 is an explanatory view showing how metal tags are taken out from an automatic marking machine.
FIG. 13A is an explanatory diagram of a conventional metal tag separating mechanism in an automatic marking machine, and FIG. 13B is a diagram showing an operating state of the conventional metal tag separating mechanism in an automatic marking machine. 1 ... metal tag, 2-1 ... convex portion, 2-2 ... concave portion,
3 ... Embossed characters, 4 ... Center point in the plane direction of the metal tag surface, 5 ... Stamped character reading surface, 6 ... Reverse side of stamped character reading surface, 7 ... Automatic marking machine, 8 ... Magazine , 9
...... Metal tag extraction part, 10 …… Suction head, 11 ……
Metal tag surface, 12 …… Metal tag peripheral area, 13 …… Ball, 14 …… Air cylinder, 15 …… Both edges pressing member, 16 …… Space.

Claims (1)

[Scope of utility model registration request] 1. A metal tag used in an automatic marking machine for marking arbitrary characters / symbols by engraving, wherein a conical or pyramidal convex portion is provided on one surface of the metal tag, and the convex portion has a symmetrical position in the thickness direction. One or a plurality of pairs of concavities and convexities, which form a pair with a conical or pyramidal recess having a bottom diameter smaller than that of the convex portion, are provided on the other surface at a point-symmetrical position with respect to the plane direction center of the metal tag. Metal tag for machine.