Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – Presses or press platen structures – per se
Reexamination Certificate
1999-12-10
2001-08-28
Ball, Michael W. (Department: 1733)
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
Presses or press platen structures, per se
C156S580000, C425S174200, C425S193000, C100S918000, C269S047000, C029S525020
Reexamination Certificate
active
06280566
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a novel vibration welding apparatus. In particular, the present invention relates to a technique for improving the attachment/removal operation of a upper jig to/from a vibrating member in a vibration welding apparatus in which, in a state where joint portions of two snythetic resin parts are brought into contact with each other, one of the synthetic resin parts is made to vibrate so that the joint portions are welded with each other.
2. Background of the Invention
There is a vibration welding apparatus in which, in a state where joint portions of two synthetic resin parts are brought into contact with each other, one of the synthetic resin parts is made to vibrate so that the joint portions are welded with each other.
In such a vibration welding apparatus, hertofore, upper and lower jigs are fixed by bolts at predetermined places. For example, as shown in
FIG. 5
, an upper jig a was fixed to a lower sufrace c of a vibrating member b by bolts d, d, . . . (only two of the bolts are shown in FIG.
5
).
In a vibration welding apparatus, fixing with bolts is preferable because violent vibration is applied to the upper and lower jigs.
Though there was no problem in the lower jig because the working of attachment/removal of the lower jig was performed from above, a worker had to perform attachment/removal of the upper jig from below in such a posture that the worker looked up at the upper jig. In addition, it was impossible to remove the upper jig a from the vibrating member b unless the bolts d were entirely removed fromt he vibrating member b. Moreover, it was necessary to thrust the bolts d into the vibrating member b from the beginning when the upper jig was to be attached. Thus, the working of the attachment/removal was inefficient.
In order to achieve more efficient production, i.e., easier removal/attachment, it is necessary to shorten the time required to replace the jigs.
It is therefore an object of the present invention to make it easy to attach/remove an upper jig to/from a vibrating member in a vibration welding apparatus.
SUMMARY OF THE INVENTION
In order to achieve the above objective, the present invention provides a vibration welding apparatus which comprises: an upper jig for supporting one of the synthetic resin parts; a lower jig for supporting the other of the synthetic resin parts; a vibrating member to which the upper jig is attached; a plurality of head bolts screwed down to a lower surface of the vibrating member; insertion holes each having a diameter larger than a diameter of a head portion of each of the bolts, the insertion holes being formed in an attached portion of the uppr jig; and notches each having a width smaller than the diameter of the head portion of each bolt and larger than a diameter of a shaft portion of each bolt, the notches being provided in spacers each of which as a width larger than the diameter of each of the insertion holes of the upper jig; wherein the head portions of the bolts are inserted into the insertion holes of the upper jig, the notches of the spacers are engaged with the shaft portions of the bolts between the attached portion of the upper jig and the head portions of the bolts, and the bolts are fastened to the vibrating member int eh state where the notches are engaged with the shaft portions, so that the attached portion is fastened through the spacers by the head portions of the bolts and the vibrating member to thereby attach the upper jig to the vibrating member.
Accordingly, attachment/removal of the upper jig can be performed by only loosening the head bolts slightly in the vibration welding apparatus according to the present invention.
REFERENCES:
patent: 2420165 (1947-05-01), Clutter
patent: 4325300 (1982-04-01), Fortier et al.
patent: 4647336 (1987-03-01), Coenen et al.
patent: 5002477 (1991-03-01), Case et al.
patent: 5931367 (1999-08-01), Sato et al.
patent: 9-245508 (1997-09-01), None
patent: 10-334705 (1998-12-01), None
patent: 11-7805 (1999-01-01), None
Gyotoku Seiichi
Koizumi Masahiko
Naito Toshitaka
Nishizaki Masahiko
Sugiyama Fuzihiko
Ball Michael W.
Koito Manufacturing Co. Ltd.
Sughrue Mion Zinn Macpeak & Seas, PLLC
Tolin Michael A.
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