JPH06127105A - Marking press - Google Patents

Abstract

PURPOSE:To provide a marking press which can mark more than one character correctly without bias by one shot, for example, on the sphere or the cylindrical surface in the cross sectional direction of a metal product. CONSTITUTION:A press is equipped with a mark holder 6 for holding more than one mark 7, a support 5 for suporting the mark holder 6, and a shooting means. The mark holder 6 has a mark holding hole 6a which guides more than one mark 7 into the shooting direction, and the support 5 having the same shaft center as the shooting means has a supporting hole directed to the central shaft of a work. An impact dispersing body 8, facing the shooting means at one end, having a mark contacting face 8a at the other end, being supported by the sliding hole 5a of the support 5 through a spring 12, and being able to slide inside the sliding hole 5a during shooting, is installed between the shooting means and the mark holder 6. The mark contacting face 8a of the impact dispersing body 8 having an enough area to transmit the impact uniformly to the marks 7 is formed to be vertical to the center of the opposed marks.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a marking device, and more particularly to a marking device suitable for stamping a plurality of characters in a single stroke on the spherical portion of a metal product or in the circumferential direction of a cylinder. It is a thing.

[0002]

2. Description of the Related Art Conventionally, as a marking device for stamping a plurality of characters on a surface of a metal product or the like, there is a technique described in Japanese Utility Model Publication No. 3-25976 previously devised by the present applicant. This marking device includes a plurality of markings each having a cylindrical portion and a double chamfer having a width smaller than the outer diameter of the cylindrical portion, a marking holder for holding the markings at equal intervals, and a support for supporting the marking holder. The body and the striking means that is connected to the support body and stamps the stamp of the stamp holder are provided, and the stamp can be easily and accurately positioned on the stamp holder.

[0003]

[Problems to be Solved by the Invention] Above-mentioned fairness 3-259
The marking device described in Japanese Patent Publication No. 76 is for stamping a plurality of characters one by one in the circumferential direction of a spherical portion or a cylindrical shape of a metal product, and it is not possible to stamp a plurality of characters with one stroke. It was a thing. In general, in order to stamp a plurality of characters with one stroke, there is a problem that the marking of each character must be performed with a uniform pressure without a one-sided hit (biased hit).

The present invention has been made in order to solve the above-mentioned problems of the prior art. For example, a plurality of characters can be accurately and accurately stamped in the circumferential direction of a metal product, such as a spherical surface or a cylinder. An object of the present invention is to provide a marking device that can perform marking with one stroke.

[0005]

In order to achieve the above object, the structure of a marking device according to the present invention comprises a plurality of markings each having a cylindrical portion and a double chamfered portion having a width smaller than the outer diameter of the cylindrical portion. In a marking device provided with a marking holder that should hold these markings, a support that supports this marking holder, and a striking means that is connected to this support and that stamps the marking, the marking holder is It has a marking holding hole for guiding a plurality of markings in the stamping direction, and the support body has a through hole having the same axis as the axis of the striking means and an axis toward the workpiece center axis. Between the striking means and the marking holder, one end faces the striking means and has a marking contact surface at the other end, and is held in the through hole of the support through elastic means, and inside the through hole at the time of stamping. Provide a striking force dispersion that can slide It is intended.

More specifically, the axis of the marking holding hole of the marking holder is bored so as to face the central axis of the cylindrical work, and the marking holding hole of the marking holder is slightly larger than the outer diameter of the marking cylindrical portion. It has an inner diameter portion and a groove portion at the tip of which the two chamfered portions of the marking can slide. Further, a guide projection is provided on the surface of the marking holder facing the work symmetrically with respect to the shaft center of the striking means.

The engraving contact surface of the striking force dispersion has an area capable of uniformly transmitting the striking force to a plurality of imprints, and is formed so as to be perpendicular to the axis of the opposing engraving marks. A hole into which an elastic member can be inserted is provided on the side opposite to the contact surface of the stamp. Further, the support body has an engagement groove on the work side thereof, which allows the marking holder to be attached and detached symmetrically with respect to the axis.

[0008]

The function of the above technical means is as follows. The engraved holder is provided with engraved holding holes that guide multiple engravings in the engraving direction.The axis of the engraved holding holes is bored so as to face the central axis of the cylindrical workpiece. On the surface facing the work, guide projections are provided that are in contact with the work symmetrically with respect to the axis of the striking means. As a result, when a plurality of characters are engraved in the circumferential direction of the spherical surface portion or the cylindrical shape of the metal product, it is possible to engrave with a single stroke without exact one-sided stroke under accurate positioning.

Further, the engraving contact surface of the striking force dispersion body has an area capable of uniformly transmitting the striking force to a plurality of imprints, and is formed so as to be perpendicular to the center of the opposing engraving marks. Since a hole into which the elastic member can be inserted is provided on the side of the body opposite to the contact surface for engraving, in combination with the above, when engraving a plurality of characters, it is possible to engrave with one stroke without a single stroke. .

Further, the marking holding hole of the marking holder has an inner diameter portion slightly larger than the outer diameter of the marking cylindrical portion, and a groove portion at the tip of which the two chamfered portions of the marking can slide.
Between the striking means and the marking holder, the striking force dispersion is held in the through hole of the support through an elastic member set on the side opposite to the striking force contact surface of the striking force dispersion, and the penetrating hole is used at the time of stamping. Since it is slidable in the hole, the head of the marking is outside the reach of the striking means when not stamped, and safety is ensured.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 is a sectional view of a main part of a hand-type marking machine according to an embodiment of the present invention, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIG. 3 is a sectional view taken along the line BB of FIG. FIGS. 4 and 5 are bottom views of the engraved holder in the view of the arrows C-C in FIG. 1, FIG. 5 is an explanatory view of the engraving, (a) is a front view, (b) is a D- of (a).
FIG.

In each drawing, 1 is an air cylinder, 2 is a piston hammer, 3 is a connecting fitting, and 4 is a ring, which constitute a striking means. Reference numeral 5 is a support body for supporting the marking holder, and 5a is a slide hole related to a through hole provided in the central portion of the support body 5. The axis of the slide hole 5a is the same as the axis of the striking means. The axis is XX, which is the center and is directed to the central axis O of the work.

Reference numeral 6 denotes a marking holder for holding a plurality of markings (3 in the example of FIG. 1) 7, and 6a denotes a marking holding hole for guiding and holding the three markings 7 in the marking direction. The axis center of the marking holding hole 6a is directed to the central axis O of the work. In the example of FIG. 1, among the three marking holding holes 6a,
One is provided in the vertical direction (X-X axis direction), and two are provided in an oblique direction toward the central axis O of the work. Stamp holding hole 6
The a and the stamp 7 will be described later. 6c is provided on the lower surface of the marking holder 6, that is, on the surface facing the workpiece, and the axis X
It is a guide protrusion formed symmetrically with respect to -X.

Reference numeral 8 is a striking force dispersion, and this striking force dispersion 8 is
One end, that is, the upper portion, faces the ring 4 of the striking means, the piston hammer 2, and the other end, that is, the lower surface has a marking contact surface 8a, and is held in the slide hole 5a of the support body 5 via the spring 12 relating to the elastic member. ing. The engraving contact surface 8a of the striking force dispersion body 8 has an area capable of uniformly transmitting the striking force to a plurality (three in FIG. 1) of the engraving marks 7 and is formed so as to be perpendicular to the axis of the opposing engraving marks 7. Has been done. In the example of FIG. 1, the plane for the marking on the axis XX is a horizontal plane and the other two planes.
The surface for each stamp is an inclined surface.

Reference numeral 8b is a hole for a spring receiver for setting the spring 12, which is formed on the side opposite to the contact surface of the striking force dispersion body 8, that is, on the upper side. An elastic means is constituted by the hole 8b of the spring receiver, the spring 12 and the ring 4. The striking force dispersion body 8 constantly presses the stamp 7 downward by the spring 12.

Further, the support 5 has an engaging groove 5b on the work side, that is, on the lower part thereof, which allows the marking holder 6 to be attached and detached symmetrically with respect to the axis XX. The engraved holder 6 can slide back and forth in the engagement groove 5b. Reference numeral 9 is a lock bolt, 10 is a ball plunger, and 11 is a knob. The lock bolt 9 and the ball plunger 10 are provided substantially in the center of the engagement groove 5b, and fix the marking holder 6. The knob 11 is a handle for handling the engraved holder 6.

The details of the marking 7 are shown in FIG. 5, and the shape of the marking holding hole of the marking holder 6 for holding the marking is shown in FIGS. As shown in FIG. 5, the stamp 7 has a cylindrical portion in the upper part (head) and a double chamfered portion 7a having a width smaller than that of the cylindrical portion in the lower portion, and is stamped on the tip side of the double chamfered portion 7a. The character part 7b of the carved surface is formed. The engraving holding hole 6a for slidably holding the engraved mark 7 has an inner diameter slightly larger than the outer diameter of the engraved cylindrical part on the upper side of the engraved holder 6 (on the side of the striking force disperser 8) and is about 3 times the thickness of the engraved holder 6. The groove 6b has a depth of / 4 (see FIGS. 1 and 3), and the remaining chamfered portion 7a of the engraved mark 7 can slide in the remaining 1/4 (FIG. 4).
See).

Next, the function and effect of the hand-type marking machine having such a structure will be described. The air cylinder 1, the piston hammer 2, the through hole 3a of the connecting fitting 3, the slide hole 5a of the support body 5, the striking force dispersion body 8, and the marking holder 6 are on the same axis XX. For example, a hand-type marking machine is brought on the work as a tool for engraving a work of a cylindrical metal product in the circumferential direction. A plurality of (three in FIG. 1) markings 7 are attached to the marking holder 6. Axis X-
By abutting the guide protrusion 6c which is symmetrical with respect to X on the work, the work center axis O and the axis XX become the same axis, and the engraved surface can be positioned. If necessary, more accurate positioning may be performed using the attached pointer.

At this time, the striking force dispersion member 8 constantly presses the marking 7 downward by the spring 12, and the marking contact surface 8a.
Is in contact with the head of each stamp 7 perpendicularly to the axis of each stamp 7. When the air cylinder 1 is actuated from this state, the piston hammer 2 strikes the striking force dispersion body 8, and the force is evenly distributed to the three markings 7 through the striking force dispersion body 8, resulting in a uniform striking force. Stamp multiple characters on the work with one stroke. The impact of this stamping is absorbed by the spring 12.

The marking holder hole 6a of the marking holder 6 has an axis centered toward the central axis O of the cylindrical work, and the marking contact surface 8a of the striking force dispersion member 8 has a plurality of markings 7. Since it has an area that can transmit the striking force evenly, and is formed so as to be perpendicular to the axis of the opposing engraving mark 7, when striking a plurality of characters in the circumferential direction of the workpiece, It can be stamped with a single blow. Further, since the striking force dispersion member 8 slides in the slide hole 5a of the support member 5 and the spring 12 is set on the non-engraved contact surface side of the striking force distribution member 8, a plurality of striking force dispersion members 8 are provided in combination with the above. It is possible to engrave individual characters with one stroke without hitting them one by one.

Further, the marking holding hole 6a of the marking holder 6
Has an inner diameter portion slightly larger than the outer diameter of the engraved cylindrical portion and a groove portion 6b on the tip of which the two chamfered portions of the engraved portion can slide, and a striking force dispersion member between the striking means and the engraved holder 6. Since 8 is held in the slide hole 5a of the support 5 via the spring 12 set on the side opposite to the engraving contact surface of the striking force dispersion body, and is slidable in the slide hole 5a at the time of stamping, When not stamped, the head of the stamp 7 is outside the reach of the striking means, and safety is ensured.

Further, the support 5 has an engaging groove 5b on the work side thereof, which allows the marking holder 6 to be attached and detached symmetrically with respect to the axis XX, and the surface of the marking holder 6 facing the work is
Since the guide projections 6c symmetrically contacting the work center about the axis XX are provided, the engraving position can be correctly determined, and moreover, a plurality of characters can be engraved with one stroke without hitting. It is possible.

In the above embodiment, the workpiece is a cylindrical surface, and three letters are engraved in a straight line in the circumferential direction with one stroke. However, the present invention is not limited to this. For example,
For engraving multiple characters in two rows in a straight line, arcuate array, or circular array, set the engraving holding hole of the engraving holder and the engraving contact surface of the embossing force dispersion unit respectively. It can be realized by Further, it goes without saying that the shape of the work is not limited to the cylindrical surface, and can be applied to a spherical surface or a flat surface. Furthermore, although the above-described embodiment describes a hand-type marking machine that can be easily used, the present invention is not limited to a hand-type marking machine, but can be applied to other large-sized marking devices and automatic marking devices.

[0024]

As described above in detail, according to the present invention, a plurality of characters can be accurately stamped in a single stroke in the circumferential direction of a metal product, for example, in a spherical portion or a cylindrical shape, without a single stroke. It is possible to provide a marking device that realizes that.

[Brief description of drawings]

FIG. 1 is a sectional view of a main part of a hand-type marking machine according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

3 is a cross-sectional view taken along the line BB of FIG.

FIG. 4 is a bottom view of the engraved holder taken along the line CC of FIG.

5 (a) and 5 (b) are front views and (b) are explanatory views of markings.
It is a DD arrow line view of (a).

[Explanation of symbols]

 1 Air Cylinder 2 Piston Hammer 5 Support 5a Slide Hole 5b Engagement Groove 6 Engraved Holder 6a Engraved Retaining Hole 6b Groove 6c Guide Protrusion 7 Engraved 7a Double Chamfer 8 Stroke Disperser 8a Engraved Contact Surface 8b Spring Bearing Hole 12 Spring

Claims (7)

[Claims] 1. A plurality of markings each having a cylindrical portion and a double chamfered portion having a width smaller than the outer diameter of the cylindrical portion, a marking holder for holding the markings, and a support for supporting the marking holder. In a marking device including a striking means for stamping the stamp, which is connected to the support, the stamp holder has a stamp holding hole for guiding a plurality of stamps in a stamping direction, and the support is the A through hole having the same axis as the axis of the striking means and an axis centering toward the workpiece central axis is provided, and one end faces the striking means and the other end between the striking means and the marking holder. An engraving device having an engraving contact surface and provided with a striking force dispersion which is held in a through hole of the support through elastic means and can slide in the through hole during engraving. 2. The marking device according to claim 1, wherein an axis of the marking holding hole of the marking holder is formed so as to face the central axis of the cylindrical work. 3. The marking holding hole of the marking holder has an inner diameter portion slightly larger than the outer diameter of the marking cylindrical portion, and a groove portion at which the inner chamfer of the marking can slide. The marking device according to 1. 4. The surface of the marking holder facing the work,
The marking device according to claim 1, further comprising guide protrusions that are symmetrically contacted with the work about the axis of the striking means. 5. The marking contact surface of the striking force dispersion has an area capable of uniformly transmitting the striking force to a plurality of markings, and is formed so as to be perpendicular to the axis of the opposing markings. The marking device according to claim 1. 6. The marking device according to claim 1, wherein a hole into which an elastic member can be inserted is provided on the counter-marking contact surface side of the striking force dispersion body. 7. The marking device according to claim 1, wherein the support body has an engagement groove on the work side thereof that allows the marking holder to be attached and detached symmetrically about the axis.