JPH0724468U - Painted steel plate heating device - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an automated coated steel sheet heating device that can repair scratches on the surface of a coated steel sheet that is fed to a press or the like. [Structure] The heated rolls (2) and (3) provided so as to face each other from above and below the coil material (1) can be moved vertically.
In addition, the coil material (1) is pressed against the coil material (1) with a required pressure, and the non-contact temperature sensors (4) and (5) are used to roll.
Measures the surface temperature of (2) and (3), and also uses a temperature sensor.
By measuring the temperature of the coating film surface of the coil material (1) rolled in (6) and controlling the temperature of the rolls (2) and (3) according to the feeding speed of the coil material (1), The softened state of the film was controlled so that the glossy surface of the roll (2) was transferred well to the coating film. The roll (3) can be a backup roll or a belt conveyor.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 INDUSTRIAL APPLICABILITY The present invention relates to a coated steel sheet heating device, which can be widely used for repairing a coating film on a supply line when the coated steel sheet is supplied to a processing machine such as a press for processing.

[0002]

[Prior art]

 Conventionally, when a coated steel sheet is supplied to a processing machine such as a press, a strip-shaped coil material or a blank material cut into a required size is used. These materials were likely to cause gloss change or scratches on a part of the coating film due to indentations, scratches, roll marks, etc. during storage or during feeding to the processing machine, which could adversely affect the products after processing. Therefore, in order to modify the coating film, the coating film and the steel sheet were partially heated and modified.The means is to blow hot air, to heat with radiant heat from an infrared heater, or to use hot water. I fixed it by either putting it on or dipping it in hot water to heat it.

[0003]

[Problems to be solved by the device]

 In the above-mentioned conventional technique, since the specific heat of air in the hot air heating is small, the heat transfer energy is small, and the heat radiation cooling from the steel plate surface also takes a long time for heating. Infrared heating has a poor radiation efficiency when the object to be heated is glossy and requires a long time for heating. When using hot water, the heat transfer efficiency is good, but the problem of the water bath and the problem of drying the adhering water are troublesome. In addition to the drawbacks such as requiring extra energy that the temperature does not rise unless the steel plate is heated, there was no automated device. The object of the present invention is to eliminate these drawbacks, to make the heat source directly contact the material, to improve the thermal efficiency, to make the softened coating glossy, and to correct it, and to automate it for both coil material and blank material. It is to provide a coated steel sheet heating device that can be used as a product.

[0004]

[Means for Solving the Problems]

 The configuration of the present invention that achieves the above-mentioned object is a coated steel sheet heating device provided in a conveyance path for a coil material or a blank material (hereinafter simply referred to as a material) to be fed to a processing machine so that the material to be conveyed is opposed from above and below. At least one of the members that can be pressed with the required pressure is used as a roll with a heat source attached, and the coating film on the material surface softened by heating is pressed and rotated to apply the gloss of the roll surface. It is characterized in that it is transferred to a film and corrected. Further, the roll can control the surface temperature to a required constant temperature, and the member facing the roll is a roll similar to this roll, a backup roll, or a conveyor belt for carrying blanks. . If the material stops during transportation, the roll will escape from the material.

[0005]

[Action]

 When the heated roll comes into contact with the coating film of the material, the coating film instantly softens and is rolled, the gloss of the roll is transferred, scratches on the coating surface disappear, and it is corrected to a glossy coating surface.

[0006]

【Example】

 FIG. 1 shows an example in which the material is a coil material (1). Painted steel sheets are usually coated on one side. The coil material (1) with the coating film on top is pressed by the heated rolls (2) and (3) from the top and bottom, and the rolls (2), (3) are adjusted according to the speed at which the coil material (1) is delivered. Rotates. The surface temperature of the rolls (2) and (3) is measured by the non-contact type temperature sensors (4) and (5), and the measured values are feedback-controlled to the re-optimized temperature. The pressing force of the rolls (2) and (3) is determined so that the modified surface of the coating film of the coil material (1) becomes a glossy surface. The temperature sensor (6) measures the temperature of the modified coating and is used to determine the optimum surface temperature of the rolls (2), (3). The roll (3) is used to heat the coil material (1) on both sides when the coil material (1) is fed at a high speed and heating on one side by the roll (2) does not sufficiently soften the coating film. To do. When the feeding speed of the coil material (1) is slow, the roll (3) turns heating on and off. Also used as a backup roll for roll (2). When the coil material (1) is stopped for some reason, the heating rolls (2) and (3) move up and down from the coil material (1) as shown by arrows (7) and (8). Release, roll (3) need not be released if not heated.

FIG. 2 shows a case where the material is a blank material (9) and the material is conveyed by a belt conveyor (10). In Fig. A, the heated roll (11) is provided on the upper surface of the belt conveyor (10) by pressing it so that it can move up and down as shown by the arrow (12), and is fed along the back side of the belt conveyor (10). A heater (13) long in the direction is provided so as to be movable up and down as shown by an arrow (14). When the blank material (9) is placed on the belt conveyor (10) and sent, the lower surface is preheated by the heater (13), and when the roll (11) is pushed up and passed, it is heated by the roll (11), The coating on the surface of the blank material (9) softens and is pressed by the roll (11), and the glossy surface of the roll (11) is transferred as the roll (11) rotates, resulting in a glossy correction surface coating. Becomes It is not necessary to use the heater (13) when the feeding speed of the belt conveyor (10) is slow and heating of the roll (11) alone can provide a sufficient correction surface. In Fig. B, a heated roll (11) is provided on the upper surface of the belt conveyor (10) so that it can be moved up and down as shown by an arrow (12), and the belt conveyor (10) is pressed with a required pressure to move it. The lower surface of (10) shows a case where a backup roller (15) which is in contact with the lower surface of the belt conveyor (10) and faces the roll (11) is provided. In this case, the feed rate of the blank material (9) is relatively slow. The temperature sensor (not shown) for measuring the heated roll (11), the heater (13), and the temperature of the corrected coating film of the blank material (9) sent from the roll (11), respectively, is as described above. It may be provided in the same manner as. Also, when the belt conveyor (10) is in an emergency stop, the roll (11) and the heater (13) are released.

FIG. 3 shows each mode of heating means for the rolls (2), (3) and roll (11) described above. In Fig. A, the roll (2), (3) or (11) is made hollow and heated oil is flown according to the arrows (16) and (17) to heat the roll. By controlling the oil temperature, The surface temperature of the roll is maintained at an appropriate temperature. In Fig. B, the roll (2), (3) or (11) is hollow and the heater (18) is installed inside. The heater (18) is electrically controlled to keep the surface temperature of the roll at an appropriate temperature. Hold it. In Fig. C, the roll (2), (3) or (11) is made of metal, and an induction coil (19) is provided close to a part of the outer circumference, and high frequency heating is performed by the induction coil (19). To electrically control the induction coil (19) to keep the surface temperature of the roll at an appropriate temperature.

FIG. 4 shows a coil line for supplying the coil material (1) to a processing machine (not shown). FIG. 4A shows a coil material (1) which is straightened by a leveler (20) to correct the bend. A case where (21) is made and then fed to a processing machine by a feed roll (22) is shown. An example of use in which the rolls (2) and (3) described in Fig. 1 are placed on the upstream side of the feed roll (22). Is. Figure B shows the case where the leveler feeder (23) with integrated leveler and feed roll is placed on the downstream side of the loop (21) and the coil material (1) is supplied to the processing machine. This is an example of use in which rolls (2) and (3) are provided on the wake side in the vicinity of ().

[0010]

[Effect of device]

 As is apparent from the above description, the present invention has the following effects. 1) Direct heat transfer, in which a heated roll directly contacts the surface of a coated steel sheet, enables efficient heating in a short time. 2) Since the coating film softened by the gloss surface of the roll is pressed and rolled, the gloss surface of the roll can be transferred to the coating film. 3) Various types of control means can be provided to automate the coating correction of coated steel sheets. 4) Only the coating film can be heated, and the steel plate need not be heated so the heating time is short.

[Brief description of drawings]

FIG. 1 is a front view of a main part of an embodiment applied to a coil material,

FIG. 2 is a front view of a main part of an embodiment in which both A and B are applied to a blank material,

FIG. 3 shows a heating mode of a roll, and A, B, and C are partially longitudinal side views,

4A and 4B are front views of a main part showing an application example of a coil line, 1 coil material (material), 2, 3, 11 rolls, 4, 5, 6 temperature sensors, 7, 8, 12, 14, 16, 17 arrows, 9 blanks (material), 10 belt conveyors, 13 heaters, 1
5 backup rollers, 18 heaters, 19 induction coils,
20 levelers, 21 loops, 22 feed rolls, 23 leveler feeders

Claims (3)

[Scope of utility model registration request] 1. A coated steel plate heating device provided in a conveyance path for a material to be fed to a processing machine, provided with members facing the material supplied to the processing machine from above and below and capable of pressing the other side with a required pressure, A coated steel sheet heating apparatus, characterized in that at least one of the members is a heated glossy roll, which is pressed and rotated to soften the coating film of the material and to transfer the gloss of the roll surface. 2. The coated steel sheet heating apparatus according to claim 1, wherein each of the facing members is a heated and glossy roll. 3. The coated steel sheet heating according to claim 1, wherein one of the facing members is a heated glossy roll, and the other is a backup roll or a belt conveyor for material transfer. apparatus.