JPH04131460U - Ultraviolet drying equipment for long objects to be coated - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to provide an ultraviolet drying device capable of drying objects to be coated with ultraviolet rays in response to the diversifying shapes of objects to be coated. [Structure] The ultraviolet drying equipment consists of a bar conveyor (26) that can carry a long workpiece (6) and convey it horizontally, and a bar conveyor (26) placed above and below this bar conveyor that hardens and dries the paint on the workpiece. It consists of an ultraviolet irradiation device for The ultraviolet irradiation devices (29, 29') placed below the bar conveyor are installed on both sides of the vertical center plane in the longitudinal direction of the bar conveyor at an angle so that the ultraviolet rays are irradiated toward the object to be coated at the center of the bar conveyor. Place it in an upward direction.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention has a long object coated on the top and bottom surfaces or on the top, bottom and sides. A bar conveyor that can be conveyed horizontally, and a bar conveyor that is placed above and below this bar conveyor. An ultraviolet drying device consisting of an ultraviolet irradiation device for drying and curing the paint on the object to be coated. Regarding.

0002

[Conventional technology]

Ultraviolet drying equipment uses ultraviolet rays to harden and dry paint on objects in a short time. It has become rapidly popular in recent years because of its ability to

0003 An example of a conventional ultraviolet drying device of this type is shown in cross section in FIG. This ultraviolet drying The bar conveyor 1 of the device has both side walls of the conveyor frame 2 and the inner side of these side walls. It has rails 3, 3 provided on. A large number of elongated plate bars 4 are connected to a bar conveyor. Both rails 3, 3 resting on the rails 3, 3 in a state transverse to the vertical center plane in the longitudinal direction. They are attached to the holding members of the side roller chains 5, 5 at intervals. bar 4 The upper longitudinal edge 4a supporting the object to be coated 6 is tapered toward the upper end. Both sides are carved diagonally.

0004 The coated material placed on the top, bottom and side surfaces of this bar conveyor 1 The ultraviolet irradiation equipment for drying the paint on item 6 is located on the left and right sides above the bar conveyor 1. Two ultraviolet rays oriented to irradiate ultraviolet rays from both sides toward the object 6 to be coated. Ray irradiation devices 7, 7' and ultraviolet rays are emitted from directly below the bar conveyor 1 toward the workpiece 6. one ultraviolet irradiation device 7'' oriented to irradiate each ultraviolet ray. The irradiation device includes a rod-shaped ultraviolet lamp 8, a reflecting mirror 9 around this lamp, and The lamp housing 10 to be held and the lamp housing 10 connected to the lower part of the lamp housing 10 are and a suction duct 11.

[0005] However, contact between the long objects to be coated and the objects to be coated conveyed by the bar conveyor 1 Paint clumps tend to form in spots, and these clumps and other debris can It falls onto the ultraviolet lamp 8 and reflector 9 located below, and clumps and debris are burned. This will stain the UV lamp, so it must be cleaned regularly to maintain its UV irradiation performance. I had to. Furthermore, the shapes of long objects to be coated have become more diverse, and they have become more uneven. Various cross-sectional shapes are handled, and the bottom and side surfaces of the object to be coated are irradiated. However, with only the UV irradiation device directly below, it is not possible to dry the sunken surfaces sufficiently. It was difficult.

[0006]

[Problem that the idea aims to solve]

The purpose of this invention is to prevent objects falling from the object being coated from falling into the ultraviolet irradiation equipment. In addition, UV rays can dry objects to be coated with ultraviolet light in response to the diversifying shapes of objects to be coated. An object of the present invention is to provide a line drying device.

[0007]

[Means to solve the problem]

To achieve the above objective, according to the present invention, the bar conveyor is placed below the bar conveyor. Ultraviolet irradiation equipment is installed on each side of the bar conveyor on both sides of the longitudinal center vertical plane. - Direct the ultraviolet light diagonally upwards so that it irradiates the object to be coated in the center of the conveyor. All you have to do is place it.

[0008] In addition, the longitudinal edges of each bar on the bar conveyor that contact the bottom surface of the workpiece should be at an acute angle. It is advantageous to process the tip and give it a small rounding for reasons explained below.

[0009] Furthermore, as an ultraviolet irradiation device, the lamp housing and this lamp housing A rod-shaped ultraviolet lamp attached to one opening of the lamp, and a reflecting mirror around it. Cooling air is provided between the outer circumferential surface of the reflector and the lower edge of both side walls of the lamp housing. A pressurized air supply system consisting of a guide plate that forms a slit through which the air passes is used, as will be described later. It's convenient for a reason.

0010

【Example】

The following is a device according to the present invention for drying paint on a coated object whose top, bottom, and side surfaces have been painted. will be explained in detail with reference to embodiments shown in the drawings.

[0011] 1 and 2 show a front view and a side view of an ultraviolet drying device according to the present invention.

0012 Inside the frame 21 surrounded by thin plates, there is a rotatable structure on the side wall of the conveyor frame 21. A bar conveyor 26 is installed around chain wheels 22, 23, 24, 25 supported by is applied and driven by the motor 27.

[0013] Above the bar conveyor 26 and on both sides of the longitudinal center vertical plane L of the conveyor , ultraviolet irradiation devices 28, 28' are located at the center of the bar 14 of the bar conveyor 26, respectively. The ultraviolet rays are directed diagonally downward so that the long workpiece 6 placed on the It is arranged according to the following.

[0014] Furthermore, the present invention allows the bar conveyor to be 26 and on both sides of the longitudinal center vertical plane L of the bar conveyor, another ultraviolet light The irradiation devices 29 and 29' respectively apply ultraviolet rays to the long workpiece 6 at the center of the bar 14. It is arranged to be oriented obliquely upward so as to be irradiated with light. Of course, each ultraviolet The ray irradiation device is provided so that the irradiation angle can be changed. In this case, figure The horizontal length of the conventional bar conveyor determined from the width of the workpiece shown in 5. Since there is no space to accommodate the UV irradiation equipment inside the bar conveyor, -14 length is increased, thus increasing the lateral length of the entire bar conveyor. .

[0015] In addition, in this embodiment, as is clear from FIG. The upper and lower ultraviolet irradiation devices 28 and 28' and 29 and 29' on both sides are They are arranged offset in the longitudinal direction.

[0016] As shown in FIG. 3, the ultraviolet irradiation devices 29 and 29' are The pressurized air supply type described in Publication No. 63-69429 is used, and these are conventional This is different from the intake type. A brief explanation about one of them, the ultraviolet irradiation device 29. To explain, the lamp housing 30 has a rod-shaped ultraviolet lamp in its upward opening. 31, a reflective mirror 32 around it, and an outer guide plate 33 with a contour corresponding to the reflective mirror 32. The outer guide plate 33 has an arc-shaped outer peripheral surface on both sides of the reflecting mirror 32. The slits 34, 34' are formed, and the lower edges of both side walls of the housing 30 are formed. Linear slits 35, 35' are formed between them. Each ultraviolet irradiation device 28, 28 ', 29, 29', the air supply ducts 36 at the opposite ends of the housing 30 are respectively It is connected to each air supply fan 37 (FIG. 1) and is connected to the top opening of the frame 20. An exhaust fan 39 is attached via a duct 38 that widens toward the end.

[0017] Cooling air flows from each air supply fan 37 through a duct 36 into each lamp housing 30. When pressurized air is supplied, once the lamp housing 30 is filled with air, as shown in FIG. The flow flows into the arcuate slits 34, 34' to uniformly move the reflecting mirror 32 in the longitudinal direction. The cooling air inside the lamp housing 30 cools and flows out of those openings. It also flows into the linear slits 35 and 35' on the lower edge of both side walls of the lamp housing, and the low temperature It also flows out from those openings, lowering the temperature of the object 6 and its surroundings. So At this time, as is clear from FIG. 3, the adjacent sides of the left and right lamp housings 30, 30 flows out from the arcuate slits 34', 34 and linear slits 35', 35. Both types of cooling air join together and rise along the longitudinal center vertical plane L of the bar conveyor. Therefore, there is an effect that the object 6 to be coated is cooled more rapidly than in the past. Therefore, the book The drying process is particularly suitable for drying paint on wooden substrates that require a matte finish.

[0018] According to the present invention, the shape of the bar 14 in contact with the lower surface of the object 6 is as shown in FIG. The longitudinal edge 14a is formed at an acute angle, and its tip is slightly rounded. This is it This allows the UV rays from below to hit the object to be coated, and also prevents damage to the object. can be protected from damage.

[0019]

[Effect of the idea]

In this invention, the ultraviolet irradiation device placed below the bar conveyor is Ultraviolet light is applied to both sides of the vertical center vertical plane of the bar conveyor toward the workpiece in the center of the bar conveyor. Since the line is oriented diagonally upward so that it is irradiated, it can be used for a variety of coating materials. In addition to being able to irradiate UV rays according to the shape, the amount of UV rays is higher than before. Therefore, an increase in production can be expected. In addition, an ultraviolet irradiation device located below Since there is a gap between the two, it is possible to prevent objects falling from the object being coated from contaminating the ultraviolet lamp. I get kicked.

[0020] In addition, the longitudinal edges of the bars of the bar conveyor are made at an acute angle, and the tips are made with a small roundness. By attaching , it is possible to make sure that the UV rays are well exposed to the object to be coated.

[0021] Furthermore, by using a pressurized air supply type in the ultraviolet irradiation device of claim 1, it is possible to The lamp housing slits are placed below the bar conveyor on both sides of the vertical plane. The cooling air flows diagonally upward from the top to the workpiece in the center of the bar conveyor. Since they meet at the same point and hit the object to be coated, the object to be coated and the air around it are reduced compared to conventional methods. Temperatures between can be rapidly cooled down.

[Brief explanation of drawings]

FIG. 1 is a front view of an ultraviolet drying device according to the present invention.

FIG. 2 is a side view of the ultraviolet drying device of FIG. 1;

FIG. 3 is a partially enlarged view of the ultraviolet drying device in FIG. 2;

FIG. 4 is an enlarged view of the bars of the bar conveyor of the ultraviolet drying device.

FIG. 5 is a partially enlarged view of a conventional ultraviolet drying device.

[Explanation of symbols]

6 Object to be coated 14 Bar of bar conveyor 26 Bar conveyor 28, 28', 29, 29' Ultraviolet irradiation device L Longitudinal center vertical plane 30 Lamp housing 31 Ultraviolet lamp 32 Reflector 33 Information board 34,34' slit 35,35' slit

Claims (3)

[Scope of utility model registration request] Claim 1: A bar conveyor capable of horizontally transporting a long object coated on its top and bottom surfaces or on its top, bottom and side surfaces; In an ultraviolet drying device consisting of an ultraviolet irradiation device for drying and curing, the ultraviolet irradiation device placed below the bar conveyor is placed on each side of the vertical center plane in the longitudinal direction of the bar conveyor, and the ultraviolet ray irradiation device is placed on each side of the vertical plane in the longitudinal direction of the bar conveyor, and An ultraviolet drying device characterized in that the ultraviolet rays are arranged diagonally upward so that the ultraviolet rays are irradiated toward the user. 2. The ultraviolet drying apparatus according to claim 1, wherein the longitudinal edge of each bar of the bar conveyor that contacts the lower surface of the object to be coated is formed into an acute angle, and the tip thereof is slightly rounded. 3. The ultraviolet ray irradiation device according to claim 1 is provided between a lamp housing, a rod-shaped ultraviolet lamp attached to one opening of the lamp housing, a reflecting mirror around the rod-shaped ultraviolet lamp, and an outer peripheral surface of the reflecting mirror. 2. The ultraviolet ray drying device according to claim 1, wherein the ultraviolet ray drying device is of a pressurized air supply type, comprising a guide plate forming a slit through which cooling air passes between the lamp housing and the lower edges of both side walls of the lamp housing.