JP4688523B2 - Workpiece assembly and joining method - Google Patents

Description

  The present invention relates to a method for assembling and joining workpieces.

  There is a case where a process of assembling the plate-like workpiece and the rod-like workpiece and firmly fixing with a thermosetting adhesive may be required. In such a case, the workpiece assembly apparatus assembles the plate-shaped workpiece and the rod-shaped workpiece whose rotation direction is positioned. When assembling, a thermosetting adhesive is applied between the workpieces, and after assembling, the assembled workpiece is put into a heating process to cure the adhesive.

  The workpiece assembled by this assembling apparatus (hereinafter, the workpiece in this state is expressed as an assembled workpiece) is uncured, so that the position of the workpiece is shifted when it is removed from the workpiece assembling apparatus. However, if the adhesive is heated and cured on the assembly apparatus, the productivity is inferior. Usually, the assembled work is taken out from the work assembly apparatus and moved to the heating process.

  In order to prevent the positional deviation of the assembled workpiece, a jig having a mechanism for maintaining the accuracy of the assembly position of the workpiece is usually used when the assembled workpiece is moved from the workpiece assembling apparatus to the heating process. FIG. 5 is a schematic diagram showing a positioning jig for moving the assembled workpiece. As shown in FIG. 5, the jig includes a base plate 12 for maintaining the plate-like workpiece 10 and the rod-like workpiece 9 in an assembled state, a groove 13 for positioning the rod-like workpiece 9 on the base 12, and a workpiece presser. Arm 11 is provided. The assembled workpiece is put into the jig while being attached to the jig, the thermosetting adhesive is cured, and the workpiece is joined and removed from the jig.

  In addition, a technique using a dedicated adhesive for temporary fixing before processing is also known. For example, Patent Document 1 discloses, as an adhesive for temporary fixing, a (meth) acrylamide resin component having a water-soluble heterocyclic secondary amine residue that can be released by contact with water and a photopolymerization initiator. An ultraviolet curable adhesive having a main component is described. Patent Document 2 discloses a photopolymerizable prepolymer obtained by crosslinking a photopolymerization reactive group at the molecular end of a water-soluble polymer having a hydrophilic group such as a hydroxyl group, a carboxyl group, or an amino acid group on a mounting base. A water-soluble UV-curable adhesive based on a photopolymerizable monomer and photoinitiator, a viscosity-reactive diluent, and a radical, cation or anion polymerized component with colorants, fillers and modifiers added. After completion of the pasting and cutting process, the entire cut wafer of the mounting base bonded and fixed is immersed in water to peel and recover the cut wafer.

Japanese Patent Laid-Open No. 06-116534 JP 2002-332457 A

  When using jigs for workpiece assembly and bonding as described above, each workpiece occupies this jig during the assembly and heating process. It is necessary to put them together. In addition, since the accuracy of the jig itself is also required from the viewpoint of ensuring the assembly position accuracy, the cost of the jig cannot be overlooked when combined with the need for a large number of units.

  It is also possible to use an adhesive for temporary fixing, but unlike the case of temporary fixing for cutting as described above, in the case of temporary fixing for assembly joining, Therefore, securing the fixing portion for the temporary fixing adhesive becomes a problem. Furthermore, after assembly and bonding are completed, it is necessary that the temporary fixing adhesive be easily peeled off.

  Therefore, the problem to be solved by the present invention is to provide a method for assembling and joining workpieces which can easily secure a fixing portion for temporary fixing and can easily release temporary fixing without using a jig. .

  The present invention uses a workpiece having a pattern shape for temporary fixing, assembles the workpiece on a workpiece assembling apparatus having a water-soluble ultraviolet curable adhesive coating unit for temporary fixing, and an ultraviolet irradiation unit, and thermosets the workpiece. Apply a water-soluble UV curable adhesive to the joint, apply a water-soluble UV-curable adhesive to the temporary fixing part of the pattern shape for temporary fixing, and perform UV irradiation to temporarily fix the workpiece temporarily fixed. Water-soluble ultraviolet rays that are put into a heating process to cure the thermosetting adhesive, cut the temporary fixing part of the pattern shape for temporary fixing from the work, and put into water to cure the temporary fixing part. This is an assembling and joining method for workpieces in which a curable adhesive is peeled off and separated.

That is, according to the present invention, in the method of assembling and joining workpieces that are assembled and joined with a thermosetting adhesive, at least one workpiece is provided with a support portion for temporary fixing, the workpieces are assembled, Applying a thermosetting adhesive to the joint, applying a water-soluble ultraviolet curable adhesive to the support, irradiating the water-soluble ultraviolet curable adhesive with ultraviolet rays, temporarily fixing the workpieces, After the temporarily fixed workpieces are put into a heating process and the thermosetting adhesive is cured to join the workpieces , the support part is cut from the one workpiece, put into water, An assembly joining method is obtained in which the support and the water-soluble ultraviolet curable adhesive are separated from the workpiece .
A method for assembling and joining workpieces characterized by the above.

  Further, according to the present invention, the workpieces are a plate-like workpiece and a rod-like workpiece, and in order to temporarily fix both end portions of the rod-like workpiece, the rod-like workpiece having a square line shape is used as the support portion. As a result, a work assembling and joining method in which two support portions are provided in parallel is obtained.

  According to the method for assembling and joining workpieces of the present invention, it is not necessary to use a jig for holding the assembly position, it is easy to secure a fixing portion for temporarily fixing adhesive, and it is easy to release the temporarily fixing portion. Therefore, handling in the transport process and heating process is facilitated, and the entire manufacturing process can be simplified and the cost of the apparatus can be reduced.

  In the method for assembling and joining workpieces according to the present invention, a workpiece having a pattern shape that serves as a support portion for temporary fixing is used. The assembly of the workpiece may be performed by a workpiece assembly apparatus that includes a conventional workpiece assembly apparatus and a water-soluble ultraviolet curable adhesive coating unit for temporarily fixing the workpiece and an ultraviolet irradiation unit. In such an assembling apparatus, the workpieces are arranged at predetermined positions, and at this time, a thermosetting adhesive is applied to a joint portion between the workpieces, and at the same time, a water-soluble ultraviolet curable resin is applied to a support portion for temporarily fixing the workpiece. Apply adhesive. By irradiating the applied water-soluble ultraviolet curable adhesive with ultraviolet rays to cure the adhesive, the workpieces are assembled and temporarily fixed. Next, the temporarily fixed work is transported from the assembling apparatus and put into a heating process, the thermosetting adhesive is cured, and the works are joined to each other. Then, the support part for temporary fixing is cut | disconnected from a workpiece | work with a punch etc., and a workpiece | work is thrown into water. The water-soluble UV curable adhesive that has been cured by being poured into water is melted, the adhesion of the temporary fixing portion is loosened, and the temporary fixing portion and the water-soluble UV curable adhesive are peeled and separated from the workpiece.

  Next, an example of a work temporary fixing method will be described in detail with reference to the drawings. FIG. 1 is a schematic view of a workpiece having a pattern shape for temporary fixing and a rod-shaped workpiece according to the present invention. In FIG. 1, the plate-like workpiece 1 is a workpiece having a pattern shape that serves as a support portion for temporary fixing, and in addition to the workpiece joining portion 5 for bonding and fixing the rod-like workpiece 2, the rod-like workpiece 2 is temporarily fixed. As the support portions, rod-like workpiece support portions 3a and 3b are provided. 4 is a thermosetting adhesive.

  FIG. 2 is a schematic view of a workpiece after temporary fixing according to the present invention. Reference numerals 6a and 6b denote water-soluble ultraviolet curable adhesives applied on the above-described rod-shaped workpiece support portions 3a and 3b.

  In the workpiece assembling apparatus, after the rotational direction and the axial direction of the rod-shaped workpiece 2 shown in FIG. 1 are positioned, the thermosetting adhesive 4 is applied thereon, and the plate-shaped workpiece 1 is mounted from above. The assembled workpieces in this state are held on the workpiece assembly apparatus by vacuum suction and positioning pins, respectively.

  Next, as shown in FIG. 2, the water-soluble ultraviolet curable adhesives 6a and 6b are applied to the rod-like workpiece support portions 3a and 3b by the water-soluble ultraviolet curable adhesive application unit, and the ultraviolet irradiation unit further applies the ultraviolet rays. They are cured by irradiation to temporarily fix the workpiece. By temporarily fixing with an adhesive in this way, the assembled work can be removed from the work assembling apparatus without the help of a jig for maintaining the assembly position accuracy between the works as in the past, and heating in the subsequent process It becomes possible to carry into the process.

  As shown in FIGS. 1 and 2, when the plate-like workpiece 1 and the rod-like workpiece 2 are temporarily fixed, the temporary fixing is stabilized by fixing both ends of the rod-like workpiece 2. As shown in the figure, it is desirable to provide the rod-like workpiece support portions 3a and 3b in the form of a square line and in parallel at two places. In addition, by making a square line in this way, it is easy to cut the temporary fixing portion later.

  Next, a method for removing the temporarily fixed portion will be described. When the heating step is completed, the thermosetting adhesive 4 is cured, and the plate-like workpiece 1 and the rod-like workpiece 2 are joined and fixed. Here, the temporary fixing portion is unnecessary and needs to be removed. FIG. 3 is a diagram schematically showing a workpiece obtained by cutting both ends of the temporarily fixed portion according to the present invention.

  First, both end portions (four locations) of the rod-like workpiece support portions 3a and 3b are punched and cut by the temporary fixing pattern cutting punch 7.

  FIG. 4 is an explanatory view showing the removal of the temporarily fixed portion from the workpiece according to the present invention. When the workpiece cut at both ends of the rod-like workpiece support portions 3a, 3b is put in water, the water-soluble ultraviolet curable adhesives 6a, 6b are melted, and the temporary fixing portion 8 (that is, both ends are cut and removed) (that is, removed) The rod-shaped workpiece support portions 3 a and 3 b) and the water-soluble ultraviolet curable adhesive are removed from the rod-shaped workpiece 2.

  The workpiece assembling and joining method according to the present invention can be applied to workpieces made of a wide variety of materials such as plastic, metal, ceramics, etc., as long as the workpiece is not made of a material weak to water. The combination of the plate-like workpiece and the rod-like workpiece can be applied to a method for manufacturing a piezoelectric vibration gyro in which a rod-like piezoelectric vibrator is assembled and fixed to a plate-like substrate, for example. Assembly bonding of the piezoelectric vibrator to the substrate is limited to a point-like or linear joint, and the substrate and the piezoelectric vibrator are not in contact with each other except the joint, and there is no room for temporary fixing and bonding. In addition, because of the characteristics, it is essential to remove the temporarily fixed portion after joining, and thus the technique as in the present invention is particularly suitable.

The schematic diagram of the workpiece | work with the pattern shape for temporary fixation by this invention, and a rod-shaped workpiece. The schematic diagram of the workpiece | work after temporary fixing by this invention. The schematic diagram of the workpiece | work which cut | disconnected the temporarily fixed both ends by this invention. Explanatory drawing which shows the removal of the temporarily fixed part from the workpiece | work by this invention. The schematic diagram which shows the positioning jig | tool for moving the conventional assembled workpiece | work.

Explanation of symbols

1 (according to the present invention) plate-like workpieces 2, 9 rod-like workpieces 3a, 3b rod-like workpiece support portions 4 thermosetting adhesive 5 workpiece joining portions 6a, 6b water-soluble UV-curing adhesive 7 temporary fixing pattern cutting punch 8 ( Temporary fixing part 10 (both ends were cut and removed) (conventional) plate-like work 11 work holding arm 12 base 13 groove

Claims (2)

In a method for assembling and joining workpieces by assembling workpieces with a thermosetting adhesive, at least one workpiece is provided with a support portion for temporary fixing, the workpieces are assembled, and the thermosetting adhesive is joined. And then applying a water-soluble UV curable adhesive to the support, irradiating the water-soluble UV curable adhesive with ultraviolet rays, temporarily fixing the workpieces, and heating the temporarily fixed workpieces. After being put into the process and curing the thermosetting adhesive to join the workpieces together , the support part is cut from the one work and poured into water, and the support part and the water-soluble UV curing are performed. A method for assembling and joining workpieces, wherein the adhesive is separated from the workpiece. The workpieces are a plate-like workpiece and a rod-like workpiece, and in order to temporarily fix both end portions of the rod-like workpiece, two rectangular wire-like workpiece support portions are provided in parallel to the plate-like workpiece as the support portion. The method for assembling and joining workpieces according to claim 1 .

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