JPH08224949A - Automatic stamping device - Google Patents

Abstract

PURPOSE: To correctly put a seal to an object to be sealed if a sealing part of the object is not flat by a method wherein a stamping jig with a stamp fixed is connected to a movable part of a drive means through a floating mechanism. CONSTITUTION: A stamp support mount 3 is fixed to a stand 2 so that a direction X of a printing surface of a stamp 8 is approximately coincident with a tangential line of a printing part of a cathode ray tube 20. The printing surface of the stamp 8 on the side of a spring 13B is adjusted so as to come into contact with the cathode ray tube 20. When the cathode ray tube 20 is a conforming article, a movable part 5b of a cylinder 5 is actuated rightward on an actuation signal for the rodless cylinder 5 transmitted from a controller, thereby automatically putting a seal by the stamp 8. At this time, the movable part 5b further moves rightward by a slight distance after the stamp 8 comes into contact with the cathode ray tube 20, thereby preventing the tube 8 from being overloaded. In addition, a stamping jig 7 and the stamp 8 are inclined so that the printing surface on the side of a spring 13A can abut against the cathode ray tube 20 after the printing surface on the side of the spring 13B abuts against the cathode ray tube 20. Therefore, the printing surface of the stamp 8 in the direction X can accurately put a seal along the printing part of the cathode ray tube 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic stamping device, and more particularly to an automatic stamping device suitable for a case where a marking portion of an object to be stamped is not flat.

[0002]

2. Description of the Related Art For example, in a cathode ray tube, after an inspection process, a non-defective product is marked (inspected) to that effect by an automatic stamping device. In the conventional automatic stamping device, the stamp is directly connected to a driving means such as a cylinder.

[0003]

In the above-mentioned prior art, since the stamp is directly connected to the cylinder, when stamping on a curved surface which is not flat like a cathode ray tube, the stamping surface of the stamp hits the cathode ray tube by one side, There was a problem that it could not be accurately stamped. In addition, when the stop position of the cathode ray tube is inaccurate, there is a problem that the stamp is overloaded during printing and is damaged.

A first object of the present invention is to provide an automatic stamping device capable of accurately marking an object to be stamped even if the marking portion is not flat.

A second object of the present invention is to provide an automatic stamping device capable of preventing the stamp from being overloaded even when the stop position of the object to be stamped is incorrect.

[0006]

The first means of the present invention for achieving the above-mentioned first object is an automatic stamping apparatus for stamping an object by driving the stamp by a driving means such as a cylinder. The stamp jig to which the stamp is fixed and the movable portion of the driving means are coupled via a float mechanism.

A second means of the present invention for attaining the first and second objects is that the float mechanism in the first means slides the stamp jig on a movable portion of the driving means. It is characterized in that the stamp is provided so as to be possible and the stamp is biased toward the object side by a spring.

A third means of the present invention for attaining the first and second objects is characterized in that the three springs in the second means are arranged in a triangular shape. .

A fourth means of the present invention for attaining the first object is characterized in that the stamp jig in the first means is made of aluminum.

[0010]

According to the first means, the stamp is tilted by the float mechanism so as to follow the shape of the object. Therefore, even if the marking portion of the object is not flat, the marking can be performed accurately. According to the second means, since the stamp is pressed against the object by the spring force of the spring, even if the accuracy of the stop position of the object is poor, the stamp is not overloaded.
According to the third means, by setting the three spring forces according to the shape of the target object, it becomes easier to follow the shape of the target object, and more accurate marking can be performed. According to the fourth means, the weight of the portion supported by the float mechanism is reduced, and the degree of freedom of tilt of the stamp is increased.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. As shown in FIGS. 1 to 3, the automatic stamping device 1 has the following structure. On the stand 2, a stamp support base 3 is fixed so that its position can be adjusted. That is, the stand 2 and the stamp support 3 each have an arcuate groove 3a of the same shape.
The arc-shaped groove (not shown) is formed, and the bolt 4 is inserted into the arc-shaped groove of the stand 2 and the arc-shaped groove 3a of the stamp support base 3, and the nut is screwed into the bolt 4 to make the stamp support base 3 Is fixed to the stand 2.

Both ends of a fixed portion 5a of the rodless cylinder 5 are fixed to the stamp support base 3, and a jig support plate 6 is fixed to the movable portion 5b of the rodless cylinder 5. The jig support plate 6 has a float mechanism 10 to be described later.
A stamp jig 7 made of aluminum is attached via the, and a stamp 8 is fixed to the stamp jig 7.
Here, the horizontal direction of the printing surface of the stamp 8 is the X direction, the direction perpendicular to the X direction is the Y direction, and the axial direction of the stamp 8 is the Z direction.

The float mechanism 10 has the following structure. As shown in FIG. 1, FIG. 2 and FIG. 4, two float shafts 11A and 11B are fixed to the upper side of the stamp jig 7 on the side opposite to the stamp 8, and the lower middle of these float shafts 11A and 11B. One float shaft 11C
Has been fixed. The jig support plate 6 has holes 6a, 6b slightly larger than the float shafts 11A, 11B, 11C,
6c is formed, and the float shaft 1 is formed in the holes 6a, 6b, 6c.
1A, 11B and 11C are inserted. Further, a stopper bolt 1 is attached to the end of the float shaft 11A, 11B, 11C.
2A, 12B, 12C are screwed together, and each float shaft 11
Springs 13A, 13B and 13C are attached to A, 11B and 11C. That is, the three springs 13A, 13B, 1
3C is arranged in a triangular shape. Here, the spring 13A
Is set to be larger than the spring force of the spring 13B. The spring forces of the upper and lower springs 13A and 13B and the lower spring 13C are set according to the shape of the object.

The automatic stamping device 1 thus constructed
As shown in FIGS. 5 and 6, the stand 2 is used by fixing it to the side of a transfer line 22 that transfers a pallet 21 in which the cathode ray tube 20 is positioned and held.

Next, the operation will be described with reference to FIG. First, the stamp support base 3 is fixed to the stand 2 so that the X direction of the printed surface of the stamp 8 is substantially aligned with the tangent line of the printed portion of the cathode ray tube 20. This adjustment is performed by loosening the nut screwed on the bolt 4 and rotating the stamp support base 3, and tightening the nut after the adjustment. in this case,
The stamp 8 is adjusted so that the print surface on the spring 13B side contacts the cathode ray tube 20. The device is used after this preparatory work. Further, the cathode ray tube 20 is inspected by the inspection device 23 before being sent to the marking position of the automatic stamping device 1, and the controller 24 stores whether or not it is a good product.

Therefore, the pallet 21 holding the cathode ray tube 20 is conveyed by the conveying line 22 and stops at the marking position of the automatic stamping device 1. When the cathode ray tube 20 is a good product, the controller 24 causes the rodless cylinder 5 to move. The signal for activating is output. As a result, the movable portion 5b of the rodless cylinder 5 moves to the right (toward the cathode ray tube 20).
The stamp 8 automatically stamps. In this case, the movable portion 5b of the rodless cylinder 5 has the stamp 8
Even if it touches the cathode ray tube 20, it further moves slightly to the right. As a result, the movable portion 5b of the rodless cylinder 5 is separated from the stopper bolts 12A, 12B, 12C and the springs 13A, 13B, 13C contract, preventing the stamp 8 from being overloaded.

Further, the holes 6a, 6b, 6c of the jig support plate 6
Is formed to be slightly larger than the float shafts 11A, 11B, 11C, so that when the movable portion 5b is separated from the stopper bolts 12A, 12B, 12C as described above, the holes 6
The stamp jig 7 and the stamp 8 can be freely tilted in arbitrary directions by the gap between the a, 6b, 6c and the float shafts 11A, 11B, 11C. As described above, the spring 13B side of the stamp 8 is first adjusted so as to contact the cathode ray tube 20, and the spring force of the spring 13A is set to be larger than the spring force of the spring 13B.
After the side abuts the cathode ray tube 20, the spring 1 of the stamp 8 is
The stamp jig 7 and the stamp 8 are tilted so that the 3A side hits the cathode ray tube 20. That is, the printing surface of the stamp 8 in the X direction can be accurately printed by following the shape of the printing portion of the cathode ray tube 20. Similarly in the Y direction, the upper and lower springs 13
A, the spring force of the spring 13B and the spring force of the lower spring 13C are set in accordance with the shape of the cathode ray tube 20 to enable accurate marking. After the marking, the controller 24 outputs a signal for turning off the movable portion 5b of the rodless cylinder 5, the movable portion 5b moves leftward, and the stamp 8 separates from the cathode ray tube 20.

In this way, the stamp 8 is tilted by the float mechanism 10 so as to follow the shape of the object (cathode ray tube 20), so that the object can be accurately stamped even when the marking portion is not flat. Further, since the stamp 8 is pressed against the object by the spring force of the springs 13A, 13B, 13C, even if the accuracy of the stop position of the object is poor, the stamp 8 is not overloaded. Also, by setting the spring force of the three springs 13A, 13B, 13C according to the shape of the object,
The shape of the object makes it easier to copy, and more accurate marking becomes possible. If the stamp jig 7 is made of aluminum, the weight of the portion supported by the float mechanism 10 is reduced,
The degree of freedom of inclination of the stamp 8 increases.

In the above embodiment, the rodless cylinder 5 is used as the driving means, but it may be driven by a motor.

[0020]

According to the first means of the present invention, the stamp jig, to which the stamp is fixed, and the movable part of the driving means are connected via the float mechanism, so that the stamp floats so as to follow the shape of the object. Inclined by the mechanism. Therefore, even if the marking portion of the object is not flat, the marking can be performed accurately.

According to a second aspect of the present invention, the float mechanism in the first means is provided with the stamp jig slidably on a movable portion of the driving means, and the stamp is springed to the object side. Since the stamp is pressed against the object by the spring force of the spring, even if the accuracy of the stop position of the object is poor, the stamp is not overloaded.

In the third means of the present invention, since the three springs in the second means are arranged in a triangular shape, the three spring forces should be set according to the shape of the object. This makes it easier to follow the shape of the target object and enables more accurate marking.

In the fourth means of the present invention, since the stamp jig in the first means is made of aluminum, the weight of the portion supported by the float mechanism is reduced and the degree of freedom of inclination of the stamp is increased. .

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of an automatic stamping device of the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a front view of a stamp portion.

FIG. 4 is an enlarged plan view of a float mechanism portion.

FIG. 5 is a side view showing an example applied to marking on a cathode ray tube.

FIG. 6 is a plan view of FIG.

FIG. 7 is a float chart when the automatic stamping device operates.

[Explanation of symbols]

 1 Automatic Stamping Device 5 Rodless Cylinder 5b Movable Part 6 Jig Support Plate 6a, 6b, 6c Hole 7 Stamping Jig 8 Stamp 10 Float Mechanism 11A, 11B, 11C Float Shaft 13A, 13B, 13C Spring 20 Cathode Ray Tube

Claims (4)

[Claims] 1. In an automatic stamping device for stamping an object by driving the stamp by a driving means such as a cylinder, the stamp jig to which the stamp is fixed and the movable part of the driving means are connected via a float mechanism. An automatic stamping device characterized in that 2. The float mechanism is configured such that the stamp jig is slidably provided on a movable portion of the drive means and the stamp is biased toward a target by a spring. Item 1. The automatic stamping device according to item 1. 3. The automatic stamping device according to claim 2, wherein three springs are arranged in a triangular shape. 4. The automatic stamping device according to claim 1, wherein the stamping jig is made of aluminum.