JPH0765241B2 - Safety device for marking light - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a safety device for a mounting position indicating device for use in a button mounting device.

(Description of the Related Art) Conventionally, in a button attachment device, a snap button attachment machine is used to attach a stud or socket of a snap button to a cloth for clothing by using a prong or an eyelet as an attachment member. There is. Generally, such a snap button mounting machine is equipped with an upper mounting die unit holding a stud or socket and a lower mounting die unit holding a prong or eyelet. This is done by positioning the cloth for clothing and the like and then pressing the two mounting die units against each other.

In the above snap button mounting operation, an optical pointer is used to accurately mount the snap button at a predetermined position such as cloth for clothes. The optical pointer is typically composed of a cylindrical member having a light source and a light path inside.
The light from the light source is led out from a small hole at the tip of the tubular member, and the light from the small hole indicates the button attachment position of the cloth positioned in the button attachment device.

Conventionally, such an optical pointer has a problem in that the two mounting die units are in abutting contact with each other when caulking the buttons.
Various measures have been made to prevent such collisions.

In Japanese Patent Application No. 58-200487, an optical pointer is integrally attached to a pusher of a button attaching device for feeding by pushing a button stud or socket or an eyelet or a prong horizontally to an upper die or a lower die. A mounting position display device is described. In the attachment position display device, the optical pointer is projected beyond the front end of the pusher so that the tip of the pointer is located above the center position of the button attachment when the pusher is fully advanced.

A similar structure is also described in Japanese Patent Application No. 51-12403. However, in the mounting position display device having such a structure, if the tip of the optical pointer does not return for some reason, the tip of the optical pointer comes into contact with the descending upper mounting die, and the There is a risk that excessive force will be applied to the optical pointer and the pointer will be destroyed.

(Object of the Invention) An object of the present invention is to provide a safety device for an optical pointer in an attachment position display device when an upper attachment die of a button attachment device and an optical pointer are brought into contact with each other.

Another object of the invention is to realize such a safety device in a simple construction.

(Summary of the Invention) According to the present invention, a safety device provided in a mounting position display device includes: a supporting member for supporting an optical pointer member so as to be movable forward and backward with respect to an upper mounting die of a button mounting device; A fixing member for fixing the position display device to the button attaching device, the fixing member being connected to the supporting member, and at a connecting portion of the supporting member and the fixing member, one end is fixed to the fixing member, Elastically engaging means, the other end of which is interposed in a state of elastically engaging with a part of the support member. In the safety device of the present invention, when the upper mounting die of the button mounting device descends as the plunger of the device descends, the optical pointer member that has finished its function does not return for some reason, and accordingly, the above-mentioned upper portion of the button is attached to the tip of the optical pointer member. When the mounting die abuts, the elastic engagement means is disengaged from the support member to protect the optical pointer.

(Description of Embodiments) A safety device of the present invention for a mounting position display device will be described below with reference to the drawings.

The attachment position display device using the safety device 1 of the present invention is used in a state of being fixed to a part of the button attachment device as shown in FIG. In such a state of use, the optical pointer member 4 is mounted above the button mounting device by the engagement member provided on the pusher 3 engaging and disengaging with a part of the optical pointer member 4. It is set so as to move in the forward and backward directions corresponding to the elevation of the die.

See FIG. In the safety device 1 of the present invention,
The support member 5 has the above-mentioned optical pointer member inserted through a perforation 5'provided therethrough, and is moved forward and backward with respect to the position immediately below the plunger, that is, directly below the upper mounting die, that is, right in FIG. And movably supported to the left. The supporting member 5 is preferably connected to the fixing member 6 by a connecting shaft (see FIG. 4) including a connecting shaft, that is, a pin member 7, which is aligned in parallel with the optical pointer member 4. As described above, the fixing member 6 can also be used to fix the attachment position display device to a part of the button attachment device.

The supporting member 5 is formed with a projecting portion 9 having a shape that can be fitted between a pair of overhanging portions 8 and 8'formed on the fixing member. The pin member 7 is inserted through the common hole 7'provided in the portion 9. The tip surface 10 of the protrusion of the support member 5 has a fourth
A gap having a predetermined width, preferably about 3 mm, is provided between the tip surface 10 of the fixing member 6 and the facing root surface 12 which are inclined downward and toward the tip portion 11 as shown by a broken line in the figure. 13 is formed.

A leaf spring member 15 is fixed to the lower side of the fixing member 6 by a screw member 14 or the like. The leaf spring member 15 has a free end 16 fitted into the gap 13 as shown in FIG. 3 and can elastically engage the tip end portion 11 of the supporting member at a minimum length, so that the supporting member 5 is secured. A repulsive force sufficient to maintain the horizontal state shown in FIG. 4 can be exerted on the support member 5.

FIG. 5 shows the operating condition of the safety device of the present invention. When the upper mounting die 17 of the button mounting device is lowered, if for some reason the optical pointer member does not return to the position before the start of operation, that is, the position retracted with respect to the upper mounting die, the upper mounting die 17 uses the optical pointer. It strikes the tip 18 of the member.
The impact force at the time of this collision and the subsequent pressing force of the plunger cause the tip portion 11 of the support member 5 to generate a rotational force about the pin member 7 in the direction of arrow b. The rotational force is
The repulsive force of the leaf spring member 15 is overcome to release the engagement between the leaf spring member 15 and the support member 5, and at the same time the entire support member 5 is rotated in the direction of arrow c around the pin member 7.

Such rotation of the support member avoids subsequent contact between the lower mounting die and the optical pointer member, and the optical pointer member is protected from damage due to excessive pressing force of the plunger.

Although the above description is based on the embodiments, it should be noted that many modifications can be made within the invention.

[Brief description of drawings]

FIG. 1 is an overall side view showing a state in which an attachment position display device including the safety device of the present invention is attached to a button attachment device. FIG. 2 is a partial side view showing a state in which the attachment position display device including the safety device of the present invention is attached to the button attachment device. FIG. 3 is a plan view showing the safety device of the present invention. FIG. 4 is a cross-sectional view of the safety device of the present invention seen from the direction of arrow A in FIG. FIG. 5 is a sectional view similar to FIG. 3 showing an operating state of the safety device of the present invention. The names of the main parts in the figure are as follows. 5: Supporting member 6: Fixing member 7: Pin member 8, 8 ': Overhanging part 9: Projecting part 10: Tip surface 12: Base surface 13: Gap 16: Free end

Claims (5)

[Claims] Claim: What is claimed is: 1. A safety device for a mounting position display device used in a button mounting device, wherein an optical pointer member is capable of moving back and forth in correspondence with an upward and downward movement of an upper mounting die of the button mounting device. A support member for supporting, a fixing member connected to the support member for fixing the attachment position display device to the button attaching device, and a connecting portion between the support member and the fixing member. An elastically engaging means, one end of which is fixed to the fixing member and the other end of which is interposed in a state of elastically engaging with a part of the supporting member, and a mounting position display. Safety device for the device. 2. The device according to claim 1, wherein the elastic engagement means is a leaf spring. 3. The device according to claim 1, wherein the elastic engagement means is adapted to be disengaged by the force of the upper mounting die when the upper pointer die comes into contact with the optical pointer member. . 4. The apparatus according to claim 1, wherein the support member is connected to the fixed member by a connecting shaft extending in parallel with the optical pointer member. 5. The apparatus according to claim 1, wherein the support member is rotatable about a connecting portion with the fixing member.