JPH0311243B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to end treatment in which the ends of structural materials constituting building materials, furniture, musical instruments, etc. are coated with synthetic resin in order to protect them from moisture infiltration. It is related to the device.

(Prior art) Among building materials, furniture, musical instruments, etc., those manufactured from synthetic resin wood, boards, asbestos boards, etc. generally have corrosion-resistant and impact-resistant surfaces in order to protect their interiors. Although finishing treatment is applied with resin, the structural surface materials that make up this type of product are susceptible to warping, distortion, curling, cracking, etc. due to moisture infiltration, especially from the end of the cut surface. It is necessary to apply surface treatment to the end of the wood, other than the surrounding resin-treated surface, to prevent moisture from penetrating inside.

Therefore, in the conventional product material processing process, as shown in FIG. On the other hand,
A method has been adopted in which a wood end decorative board 3 of the same quality as the surface finishing material 2 is cut into a shape that matches the wood end 1a and is pasted with adhesive, and after curing, the protruding portion is manually finished. .

However, in such a conventional structure finishing method, even when the structure material has a relatively simple shape, it is not only necessary to separately cut and prepare the decorative wood 3, but also to remove the material. If the shape of the wood end is complicated, it is difficult to cut the wood end decorative board and manually process the parts of the wood end decorative board where the adhesive protrudes, making the work extremely complicated. There was no escape from the risk of moisture infiltration.

Therefore, in order to improve the wood end treatment using the conventional wood end decorative board, it has been considered to form a synthetic resin coating on the wood end 1a of the structure material 1. For example, it is possible to directly apply a synthetic resin liquid with a brush. It is being done. However, when such a method is used, if the viscosity of the synthetic resin liquid is low, not only will the coating work be incomplete, but the resin coating formed on the end of the wood will not be thick enough, resulting in a poor finished state of the wood end, and vice versa. If you try to apply a high viscosity resin liquid with a brush to maintain the thickness of the resin coating, you will end up with streaks left by the brush on the treated wood surface, and in the end, a beautiful synthetic resin coating with a constant thickness will be formed. Therefore, the treatment method using the synthetic resin coating is not necessarily more advantageous than the above-mentioned end treatment using the decorative board.

(Problems to be Solved by the Invention) The present invention deals with the above-mentioned situation and aims to improve the wood end treatment using a synthetic resin coating, by mechanically forming a synthetic resin film of a predetermined thickness on the wood end surface. The purpose of this project is to develop a device to prevent moisture from entering the wood end, and to efficiently and uniformly form a beautifully finished wood end surface.

(Means for Solving the Problems) That is, the features of the present invention that meet the above object include a belt conveyor in which a wide belt is wound between two parallel rollers; a spreader installed to supply a paste-like synthetic resin onto the belt surface; a scage installed behind the spreader in the conveyor running direction to uniformize the paste-like synthetic resin on the belt surface to a predetermined thickness; A butt end processing device comprising: a pressure contact means provided at the rear of the cage for pressing the end of the structure material against the belt surface with a predetermined pressure; and a structure material take-out means provided at the rear end of the forward path of the belt conveyor. The reason lies in the fact that it has been constructed.

(Function) With the above configuration, the paste-like synthetic resin
It is supplied onto the belt surface from a spreader, and is spread onto the belt surface to a predetermined thickness by a scage as the belt runs.

The end surface of the structure material is pressed onto the synthetic resin layer on the belt surface via a pressure contact means, and as the belt runs, it is held and transferred to the rear end of the belt, and then a take-out means is applied at the rear end of the belt. When the structure material is pulled up using the method, a blank area where there is no resin liquid is created on the belt surface, and instead, a uniform thickness of the synthetic resin adheres to the end surface of the structure material.

The synthetic resin coating thus formed is
It forms a beautiful coating of a predetermined thickness without brush lines, and because it is formed by a series of mechanical operations, it can be applied to any structural material at a predetermined thickness.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 1 shows an outline of the wood end processing apparatus according to the present invention, and in the figure, 4 is a belt conveyor, which is a known conveyor in which a wide belt 5 is wound between two parallel rollers 14 and 14'. .

The belt conveyor 4 is provided with a spreader 6, a skage 7, a structure material pressure welding means 8, and a structure material removal means 9 in this order as shown in the figure.

Among these, the spreader 6 supplies the paste-like synthetic resin 10 to the belt surface 5, and stores the paste-like synthetic resin 10 in a predetermined shape, for example, an oblong-shaped container with a substantially inverted triangular cross section. The synthetic resin 10 is supplied onto the surface of the belt 5 through an opening 11 provided across the width of the belt 5 at the lowermost end. For this purpose, a piston 12 that can move up and down toward the opening 11 is disposed inside the sprayer 6, and the synthetic resin 10 is discharged by the extrusion operation of the piston 12. Further, the opening 11 faces the belt 5 surface with an appropriate distance therebetween, thereby making it possible to supply the synthetic resin 10 to the belt 5 surface.

Here, as the paste-like synthetic resin 10,
In general, various resins that have strong adhesion to the end surface of structural materials and form a water-resistant coating after reinforcement can be used, but vinyl chloride resin and other resins that have a plasticizing effect are most preferred; The viscosity and interfacial tension are appropriately adjusted in advance by adding an appropriate amount of a viscosity modifier such as a viscosity reducing agent, thickener, or thixotropic agent to the solution, and the resulting solution is used in an appropriate paste-like solution.

In particular, adjusting the viscosity is extremely important, as this determines the thickness of the resin coating formed on the butt end surface, and also influences the condition of the finished butt end surface. In addition, each commercially available regulator is used as the viscosity regulator.

Next, the scage 7 is for raking the paste-like synthetic resin 10 supplied from the spreader 6 onto the surface of the belt 5, and has a spatula portion 13 at its lower end having approximately the same width as the belt 5 width. Hold the spatula part 13 on the belt 5 surface at right angles to the running direction,
Moreover, the spatula part 13 and the belt 5 are installed with a required distance between them. Note that the above-mentioned interval can be adjusted as appropriate.

In this way, the paste-like synthetic resin 10 supplied from the spreader 26 by the above-described scage 7 is spread over the surface of the belt 5 as the belt 5 runs, and a uniform thickness of the resin solution is formed on the belt 5. Form layer 10'.

On the other hand, the structure pressure welding means 10 and the structure removal means 9
For example, known manipulators can be used.

In particular, the former pressure contact means 8 presses the structural material 1 at a pressure contact position 15 located at the rear of the cage 7.
The butt end 1a surface of No. 1 is brought into pressure contact with the synthetic resin solution layer 10' at a predetermined pressure.
A necessary and sufficient force is required to bring the surface into contact with the belt 5 surface, and therefore a manipulator having an automatic control mechanism for such pressing force is preferable.

The latter taking-out means 9 is for pulling up the structural material 1 at the taking-out position 16 at the rear end of the belt conveyor 4. Of course, a separate device from the pressure-welding means 8 may be used, but the above-mentioned pressure-welding means may be used. It is also preferable that the manipulator used as 8 is provided with a reciprocating function along the running direction of the belt 5 and also has a pressure welding operation and a take-out operation, thereby making it possible to automate the series from pressure welding to take-out. Since the structural material 1 can be supported by the manipulator even during the transition from the pressing position 15 to the take-out position 16, even if the structural material 1 is in a shape that is likely to fall, it can be placed on the running belt 5 without any inconvenience. It has the advantage of being erected.

Note that the structural material 1 described here includes any material constituting building materials, furniture, musical instruments, etc., such as wood, synthetic resin wood, board, and asbestos board, and these are usually treated by the processing apparatus of the present invention. Prior to use, the surface except the end 1a is finished as a decorative surface by any known means such as pasting a decorative board or applying synthetic resin paint, and the end 1a
Only the a side is left untreated.

Therefore, the end 1a of the structural material 1 is applied to the synthetic resin solution layer 10' formed on the belt 5 surface.
The surfaces are pressed against each other, and as the belt 5 runs, it moves to the take-out position 16.
When the structural material 1 is taken out, the synthetic resin solution layer 10' on the surface of the belt 5 adheres to the end 1a with a constant thickness.

Thereafter, the end of the end is heat treated by known means to harden and fix the synthetic resin attached to the end of the end 1a, thereby forming a beautiful coating on the end of the end 1a that is as beautiful as any other decorative surface.

(Effects of the Invention) As described above, the wood end treatment device according to the present invention has the following features:
A paste-like synthetic resin solution is supplied from a spreader onto a belt conveyor, and as the belt runs, the resin solution is made uniform to a predetermined thickness by a scage,
On the other hand, press the end surface of the structure material into the resin solution layer through a pressure contact means and a removal means,
By keeping it for a certain period of time, a synthetic resin film of a certain thickness is formed on the end of the wood, which of course completely prevents moisture from entering the end of the wood. Unlike conventional methods, there is no need to prepare a decorative end panel that matches the shape of the end of the structural material, and it is possible to treat the end of any complicated shape quickly and easily. Using a highly viscous resin liquid, it is possible to form a wood edge comparable to conventional decorative laminate processing.

Furthermore, even if a relatively high viscosity paste is used, there is no concern that brush marks will be left on the finished surface, unlike when applying resin with a brush, and the end of the wood can be beautifully finished with a synthetic resin coating of a predetermined thickness. In addition, the excess resin liquid is prevented from seeping out onto the decorative surface around the end of the wood, and the surface finish of the structure material 1 is improved.

In addition, a series of assembly operations using a belt conveyor enables efficient end treatment of a large number of structural materials, as well as automatic and accurate resin coating of a predetermined thickness on the end surface of each structural material. It can be formed and has a remarkable effect when putting wood end treatment into practical use with a synthetic resin coating.

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory view showing an example of a wood end treatment apparatus according to the present invention, and FIG. 2 is a perspective view showing an example of a conventional wood end treatment method. 1... Structure material, 1a... Butt end, 4... Belt conveyor, 5... Belt, 6... Spretsuda,
7...Scage, 8...Pressure means, 9...Removal means, 10...Paste synthetic resin.

Claims (1)

[Claims] 1 An end treatment device that coats the ends of structural materials with synthetic resin, which includes a belt conveyor consisting of a wide belt wrapped between two parallel rollers, and an upper front end of the belt conveyor on the outbound side. a spreader installed to supply a paste-like synthetic resin onto the belt surface; a scage installed behind the spreader in the conveyor running direction to uniformize the paste-like synthetic resin on the belt surface to a predetermined thickness; The structure material includes a pressing means provided at the rear of the cage and pressing the end of the structure material against the belt surface with a predetermined pressure, and a structure material removal means provided at the rear end of the belt conveyor on the outward path side. Features wood end processing equipment.