JPH036892Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a jig device for manufacturing eyeglasses, and more specifically, the present invention relates to a jig device for manufacturing eyeglasses. In the jig device used for joining by the method described above, at least two electrodes are fixed to a chuck means that can be opened and closed via a link mechanism, and the box leg, etc. is attached while the rim is held by the electrodes. The present invention relates to an eyeglass manufacturing jig device configured to join parts.

[Background of the invention] Generally, various metals are used as materials for metal frames among eyeglass frames. Recently, frames manufactured from titanium alloys containing titanium have become popular.

Titanium alloys have the advantages of high specific strength, that is, strength per weight, and excellent corrosion resistance, and are widely used as materials for eyeglass frames. That is, it is desirable that eyeglass frames be as lightweight as possible, but at the same time, they are also required to have high rigidity and strength. The reason for this is that eyeglass frames made of titanium alloy are suitable as a material for eyeglass frames because they can promote further weight reduction and at the same time ensure sufficient rigidity and strength.

Incidentally, as shown in FIG. 1, eyeglass frames are made up of various parts joined together. That is, the eyeglass frame 2 includes a rim 6 that supports the lens 4, a bridge 8 that connects the rim 6, and a temple 10.
It basically consists of. Furthermore, the rim 6
A wading 12 is attached to the eyeglasses for reinforcing the strength, and a box leg 14 is attached to the tip of the eyeglasses, which engages the user's nose when the glasses are used.
On the other hand, the temple 10 is the brooch 1 for the rim 6.
6. Flexibly connected by a hinge 20 via an end piece 18.

Therefore, when joining these various parts,
In the prior art, a brazing method is used. However, eyeglass frames made of titanium alloy have the disadvantage that they become brittle when the heating temperature exceeds a predetermined temperature. For this reason, usually silver solder is used as the brazing material, heated by a high-frequency induction coil, and brazing is performed at a relatively low temperature while discrimination is made based on the luminescent color of the brazing material, which changes depending on the heating temperature.

However, such brazing work not only requires a high level of skill, but also requires the operator to rely on experience and intuition when determining the temperature of the brazing material, for example. For this reason, it is difficult to maintain uniform quality of the product, and there are disadvantages such as there is a limit to the improvement of production efficiency.

On the other hand, rim 6, bridge 8, watari 1
2. The box feet 14, the brooch 16, etc. are all made as small as possible. Therefore, attempts have been made to use resistance welding as a method of joining these relatively small parts all at once.

In the case of this resistance welding, it is first necessary to fix the rim 6 with an electrode, but the rim 6 itself does not have much rigidity and is not suitable for positioning and fixing. Therefore, the drawback is that it cannot be put to practical use in detailed and complicated welding work unless appropriate clamping means are used.

[Purpose of the invention] The present invention has been made in order to overcome the above-mentioned disadvantages, and includes at least two electrodes adapted to the shape of the rim for a chuck means configured to be openable and closable using a link mechanism. By fixing the chuck means in place and opening and closing the chuck means by manual operation using a lever to fix and hold the rim with the electrode, the structure is simple and the work of joining parts such as box feet to the rim is simple. It is an object of the present invention to provide a jig device for eyeglass manufacturing that enables efficient manufacturing.

[Means for achieving the object] In order to achieve the above object, the present invention provides a jig for joining parts such as box feet to a rim constituting an eyeglass frame, the jig comprising: a base; a mounting plate that is swingably provided with respect to the base; a set of welding electrodes that are mounted on the mounting plate and at least one of the electrodes is movable relative to the other electrode; and one of the above-mentioned welding electrodes. a link member for opening and closing a swinging arm that holds the electrode in order to displace the electrode; a lever mounting member connected to the link member; and a chuck means comprising a lever member connected to the lever mounting member. It is characterized in that the rim of the eyeglass frame is gripped and fixed by the set of electrodes.

[Embodiments] Next, preferred embodiments of the eyeglass manufacturing jig device according to the present invention will be described in detail with reference to the accompanying drawings.

In FIGS. 2 to 6, reference numeral 30 indicates a jig device for manufacturing eyeglasses according to the present invention. This eyeglass manufacturing jig device 30 includes a base portion 32 and a base portion 3.
The chuck means 34 is supported by the chuck means 2 and provided with an electrode.

First, in FIG. 2, support members 38a and 38b are erected in parallel to a base 36 constituting the base portion 32. As shown in FIG. And the supporting members 38a, 3
Mounting members 42a and 42b having a bent shape are rotatably mounted by bolts 40a and 40b that are screwed into screw holes (not shown) drilled in the center of 8b. The chuck means 34 is fixed to the mounting members 42a, 42b via coupling means such as bolts.

That is, as shown in FIGS. 3 and 4,
The chuck means 34 includes a mounting plate 44, which is fixed to the mounting members 42a, 42b, and an arm mounting member 46 is fixed to the mounting plate 44 by bolts. This arm mounting member 46 has a notch 48 that is largely cut out along the longitudinal direction in approximately half of its upper surface, and a link member (described later) is provided at one end side of the base 50 adjacent to the notch 48. A fitting groove 52 into which is fitted is defined.

Next, the swinging arm 54 holding this electrode is attached to the pin member 56 with respect to the arm mounting member 46.
It is pivotably supported by. In this case, a hole (not shown) is formed in the center of the swing arm 54, and the pin member 56 fits into this hole. On the other hand, one end of the swing arm 54 is cut out to form a connecting portion 58 .

Therefore, one end of the link member 60 is connected to the fitting groove 52.
and is rotatably attached by a pin 62,
The other end is connected to a lever mounting member 66 by a pin 64. Further, this lever mounting member 66 is connected to a connecting portion 5 formed on one end side of the swing arm 54.
8 via a pin 68, and thus constitutes a link connection so that the swing arm 54 opens and closes with respect to the base 50 as the lever mounting member 66 rotates. I hope you understand.
Note that, as shown in FIG. 5, when the swing arm 54 is in a closed state with respect to the platform 50,
The straight line connecting pins 4 and 68 and the straight line connecting pins 62 and 64 are configured to intersect at a small angle θ. In this case, a curved portion 66a is formed at the tip corner of the lever mounting member 66, and a lever 70 is fixed to the tail end.

Next, the plate member 72 is fitted onto the end of the pin member 56 and fixed to the base portion 50. As shown in FIG. 6, a workbench 76 having an opening 74 defined in the center is fixed to the plate 72, and at least one electrode is connected to the other electrode through the opening 74. A set of movable welding electrodes 78
a and 78b are arranged so as to protrude. That is, the electrodes 78a and 78b are fixed in parallel by screwing bolts into the end sides of the swing arm 54 and the platform 50, respectively. Note that the electrode 78b has a bulging protrusion 84 for gripping the rim 6, while the electrode 78a has a groove 82 defined therein to receive the protrusion 84 and into which a portion of the rim 6 is fitted. ing. It is preferable that these electrodes 78a and 78b be formed in a shape that is optimal for holding the rim 6 in accordance with the shape of the rim 6.

The eyeglass manufacturing jig device according to the present invention is basically constructed as described above, and its operation and effects will be explained next.

First, in FIG. 5, the lever 70 is rotated in the direction of arrow A. A lever mounting member 66 that fixes the lever 70 rotates counterclockwise (in the direction of arrow A) about a pin 68. In this case, a tapered curved portion 6 is provided at the tip corner of the lever mounting member 66.
6a, the distal end portion of the lever mounting member 66 will not come into contact with the base portion 50 and its rotation will not be hindered. Therefore, the link member 60 and the swing arm 54 connected to the lever mounting member 66 follow the rotation of the lever mounting member 66, and are displaced to the position indicated by the two-dot chain line in the figure. That is, the link member 60 rotates in the direction of arrow B using the pin 62 as a fulcrum, and similarly, the swing arm 54 is displaced in the direction of arrow B, that is, in the opening direction, using the pin member 56 as a fulcrum.

Therefore, one side of the rim 6 and the box leg 14 are fitted into the groove 82 defined in the electrode 78a, as shown in FIG. Next, the lever 70 is rotated in the direction of arrow B in the figure. Following this displacement of the lever 70, the swinging arm 54 rotates in the closing direction, contrary to the above-mentioned operation, and as a result, the rim 6 is firmly fixed by the protrusion 84 formed on the electrode 78b and the electrode 78a. It will be held in place. In this case, as can be easily understood from FIG. 5, the pins 62, 64,
68 are not on the same straight line, and the pins 62 and 64
It is locked at the position where the straight line connecting the pins 64 and 68 intersect at an angle θ. The positional relationship of these pins 62, 64, and 68 is
Since this corresponds to the opposite positional relationship to when the lever 70 is opened, the locked state will not be released unless the lever 70 is rotated in the direction of arrow B.

After the rim 6 and the box leg 14 are clamped as described above, an electrode (not shown) extending from a welding machine (not shown) is brought into contact with the box leg 14.
Depending on the shape of the box feet 14, the support members 38a, 3
The mounting members 42a and 42b are tilted relative to the mounting member 8b to obtain a suitable angle of contact. Therefore, the box legs 14 are welded to the rim 6 by applying pressure while applying a predetermined current. At this time, it goes without saying that a titanium thin film or a welding material (not shown) such as silver solder is interposed between the rim 6 and the box legs 14. The welding material temporarily attached to the bottom surface of the box foot 14 is heated and melted by the applied current,
As a result, the box legs 14 are joined to the rim 6.

In this case, the electrodes 78a and 78b are selected to have an optimal shape for fixing and holding them in accordance with the size or design shape of the rim to be used for the joining operation.
By attaching the glasses according to the type of eyeglasses to be manufactured, versatility is improved and welding work can be performed more easily.

Next, the second embodiment is illustrated in FIGS. 7 to 9. Note that the same components as in the first embodiment are given the same reference numerals, and detailed explanation thereof will be omitted.

In FIG. 7, the first swing arm 122 and the second swing arm 12 are connected to the arm mounting member 120.
4 sandwich the fixing plate 126, and the pin members 128,
It is rotatably supported by 130. Then, a plate member 134 having a protruding connecting portion 132 formed thereon is fixed to the fixing plate 126 . Note that the arm attachment member 120 is also formed with a protruding portion having a shape corresponding to the connecting portion 132 (not shown). Therefore, one ends of the parallel link members 134a, 134b and 135a, 135b are connected to both ends of the T-shaped link member 137 via pins 140, 142, respectively. On the other hand, these link members 134a, 13
4b and 135a, the other ends of 135b are pins 14
4 and 146 respectively, the first swinging arm 12
2, connected to the second swing arm 124; Furthermore, the lever 70 is fixed to the base end of the T-shaped link member 137 and is rotatably supported by the connecting portion 132 by a pin 148. In this second embodiment as well, as can be understood from FIG. 8, the link mechanism is constructed so that the same locking function as in the first embodiment operates.

Next, as shown in FIG. 9, the electrodes 136a to 136c are respectively fixed to the first swing arm 122, the fixed plate 126, and the second swing arm 124 via bolts. In this case, inclined grooves 138a and 138b are defined on both sides of the electrode 136b, and the electrodes 136a and 1
Projections 141 and 143 formed on 36c engage with each other.

In the second embodiment configured as described above, first, as shown in FIG.
6b. Next, as shown in Figure 8,
Rotate the lever 70 in the direction of arrow C to remove the electrode 136.
The frame and the box leg 14 are fixed and locked by the protrusions 141, 143 formed on the a and 136c and the electrode 136b. That is,
In the figure, it is displaced from the position shown by the two-dot chain line to the position shown by the solid line. Therefore, an electrode (not shown) extending from a welding machine (not shown) is brought into pressure contact with the box leg 14, and a predetermined current is applied to weld it. After the welding work of the first box leg 14 is completed as described above, the next box leg 14 is welded.

In this way, it becomes possible to continuously weld the box feet to the rims forming the pair, and as a result, the efficiency of the manufacturing process can be improved.

[Effects of the invention] As described above, according to the invention, the rim, which is a component of the eyeglass frame, is fixed by the electrode provided on the chuck means, which allows the swinging arm to open and close via the link mechanism. Therefore, it is possible to easily and efficiently weld parts such as box feet by resistance welding. Furthermore, by forming the electrodes in accordance with the design and size of the rim and attaching them to the jig device, there is an advantage that the electrodes can be used for general purposes in the manufacturing process of eyeglasses of various designs.

Although the present invention has been described above with reference to preferred embodiments, the present invention is not limited to these embodiments, and various improvements and design changes can be made without departing from the gist of the present invention. Of course.

[Brief explanation of drawings]

Fig. 1 is a partially omitted perspective explanatory view of eyeglasses, Fig. 2 is a front view of the jig device for producing eyeglasses according to the present invention, and Fig. 3
The figure is a perspective view of a jig device for manufacturing eyeglasses according to the present invention.
FIG. 4 is a perspective view illustrating the link mechanism provided in the eyeglass manufacturing jig device according to the present invention, FIG. 5 is a plan view illustrating the operation of the eyeglass manufacturing jig device according to the present invention, and FIG. 6 7 is a perspective view illustrating the usage state of the eyeglass manufacturing jig device according to the present invention, FIG. 7 is a perspective view showing another embodiment, and FIG. FIG. 9 is a plan view for explaining, and FIG. 9 is a perspective view for explaining the usage state of another embodiment in FIG. 7. 30...Jig device for eyeglass manufacturing, 32...Base part, 34...Chuck means, 54...Swinging arm, 60...Link member, 66...Lever mounting member, 76...Work table, 78a , 78b...electrode.

Claims (1)

[Scope of Claim for Utility Model Registration] A jig for joining parts such as box legs to a rim constituting an eyeglass frame, the jig comprising: a mounting plate that is swingably provided with respect to a base; a set of welding electrodes mounted on the mounting plate, at least one of which is displaceable relative to the other; and a rocker for holding the one of the electrodes in order to displace the one of the electrodes. a link member for opening and closing the movable arm; a lever mounting member connected to the link member; and a chuck means comprising a lever member connected to the lever mounting member; A jig device for manufacturing eyeglasses characterized by gripping and fixing a rim.