RU10505U1 - DEVICE FOR INDUCTION ADHESIVE DRYING - Google Patents

Abstract

A device for induction drying of glue, including a rectangular induction coil made along a profile corresponding to the profile of the surfaces to be glued, characterized in that the coil is equipped with magnetic circuits made of a set of U-shaped plates installed at the glue application points.

Description

The invention relates to devices for fastening (setting) glued metal sheets with the help of: - induction heating and can be used to connect automotive fittings, for example, hood, roof, doors, trunk.

In technology, devices are widely used for joining similar parts using spot welding, which provide structural integrity and dimensional stability of the processed products.

However, edge welding often causes poor surface quality, bonding of parts does not have such a disadvantage, however, for fast curing, many types of adhesives require heating. There are known designs of heating furnaces and hot-drying chambers used to cure the adhesive seam of metal surfaces to be glued (see. Constructions M, 1975, p. 322-3-35).

The disadvantage of such ovens is that the glue drying process takes at least 30 minutes. In addition, the parts to be glued are placed in the entire oven where they are fully heated. Another disadvantage of such ovens is the increased energy consumption, large footprint, unjustified transportation costs associated with with overload of parts,

Such disadvantages are deprived of the device for induction drying of glue.

An induction heating device is known for drying glued joints, including an induction coil through which an alternating current passes, located near the workpiece and a generator (see Ford advertising brochure, 13g4g,). Such a coil sets up an electromagnetic field that circulates energy to a metal product so that current flows to the surface of the product. Electrical resistance to flow causes an immediate effect of heating. Since the glue does not conduct electric current, a means of increasing the temperature is the thermal conductivity from the heated metal surface upon contact: with glue.

M.cl, and 05 V

Known induction installation for setting glue, including an induction coil of rectangular cross-section, made according to the profile corresponding to the profile of the adhesives to be glued together with CMt. prospect Roht Electric, Germany, 1U8-4. IT corrode protection of metal sheet billets in such reflections is maintained at a constant heating temperature due to adjustable composite inductive coils, as well as special sliding clamps that disconnect parts of coils during overheating. E the process of heating and cooling the part is in special clamps of not special materials., Blocking the access of the magnetic field. The parts are placed on textolite supports, reaching in height to the edge of the part.

Such a laborious fastening and clamping technique usually eliminates the possibility of warpage of parts, but it requires high costs in the manufacture and operation.

The purpose of the proposed utility model is to simplify the design of the device and reduce the cost of manufacturing and operation.

The problem is solved in that in a device for induction drying of glue including an induction coil of rectangular cross-section, made according to the profile corresponding to the profile of the surfaces to be glued, magnetic pipelines made of a set of U-shaped plates are installed at the glue application points.

These signs make it possible to ensure the concentration of magnetic flux at the points of glue application and, therefore, more intense heating.

Thus, heat is concentrated only in the necessary metrics and is removed from the remaining surface of the part, which eliminates its overheating and warping.

Figure 1 shows a General view of the device, figure 2-position of the induction coil and magnetic circuits relative to the workpiece.

The device comprises an induction coil 1 of rectangular cross section 2, made along the profile corresponding to the profile of the surfaces to be glued 3, magnetic cores 4 made of plates

U-shaped 5, installed at the points of attachment of maple 5. To install the coil on the part there are height-adjustable studs 7, mounted on a base of dielectric 3.

Due to the proposed design, namely, the presence of U-shaped /: plates of magnetic cores located at the point: -: applying glue, heat is accumulated only at the indicated point: -:, extending to the rest of the part to a much lesser extent. This avoids warping of the sheet surfaces and at the same time, a quick setting of the maple is achieved.

SPECIFIC EXAMPLE OF PERFORMANCE OF THE OFFERED DEVICE

- The body of the induction coil is made of copper, and the plate of the magnetic circuit is made of electrical steel with a thickness of C, 19 mm,

-Number of plates in the set - 100 pieces;

-Power converter - 15-20 KET;

- Frequency - 10,000 Hz;

-Temperature of heating - 180-200 C;

- Glue setting time - 15-20 sec.

- The consumption of water for cooling the coil is 12 l min, at a pressure of 1.5 .. .20 kgssm2.

- The base of the inductor is made of PCB-,

- Dimensions 1220 x 620 x 315 mm;

- Weight - 4.5 kg

Tests of the proposed device, conducted E production conditions, showed the effectiveness of its work compared with previously used electric furnaces. Significantly reduced energy costs. The device can be integrated into automatic lines, which will allow you to abandon the overload of parts and transportation means. Significant savings in production space are achieved and the environment is improving.

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Claims (1)

A device for induction drying of glue, including a rectangular induction coil made according to a profile corresponding to the profile of glued surfaces, characterized in that the coil is equipped with magnetic circuits made of a set of U-shaped plates installed at the glue application points.