JPH09176737A - Tray assembly for continuous annealing furnace and continuous annealing furnace - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tray assembly preventing the contamination of a furnace wall by efficiently joining each purge gas exhausted from the inside pipe end part of each pipe coil and efficiently guiding to out of a furnace. SOLUTION: The tray assembly piles a lower step tray 7a, middle step tray 7b and upper step tray 7c through supports 8, and in each tray 7a, 7b, 7c, the pipe coils 6a-6f are vertically piled two by two. In a continuous annealing furnace 22, the purge gas is supplied from the outside pipe end of the pipe in each pipe coil 6a-6f. Then, the purge gas supplied in each pipe coil 6a-6f is exhausted from the inside pipe end of the pipe coil 6a-6f. The exhaust gases are joined and raisen through the center holes 11 of iron plates 9 and the center holes 10 of the middle step and the upper step of trays 7b, 7c and exhausted to out of the furnace from a gas exhaust hole 23 in the continuous annealing furnace 22 as shown by the arrow mark G.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to stacking a plurality of LWCs when annealing a pipe coil (also referred to as a level wound coil (LWC)) formed by winding a long metal thin pipe in a coil shape. The present invention relates to a tray assembly for a continuous annealing furnace for holding the same, and a continuous annealing furnace for annealing the LWC stacked and held on the tray assembly for the continuous annealing furnace.

[0002]

2. Description of the Related Art Generally, in bright annealing, a heat-treated material is N ₂ gas,
By heating to a predetermined temperature in an atmosphere gas such as DX gas, oxidation of the surface of the object to be heated is prevented and its bright state is maintained. Then, in order to completely replace the atmosphere gas in the annealing furnace, the inside of the furnace is once evacuated and then the atmosphere gas is purged into the furnace. On the other hand, a thin pipe made of a copper alloy with a diameter of 4 to 10 mm, which is used for a heat exchanger of an air conditioner, for example, has a bright surface, and foreign matter such as rolling oil does not remain in the pipe as much as possible. Was needed.

However, when the pipe coil is annealed by the above-mentioned annealing method, since the gas in the pipe is not replaced, a large amount of rolling oil may remain in the pipe. Therefore, conventionally, atmospheric gas (purging gas) is pumped into the pipe from one end of the pipe coil,
There was an attempt to replace the gas inside the pipe with force.

Here, regarding the conventional continuous annealing equipment, 2
Two examples (1) and (2) will be described. Regarding (1), see Japanese Patent Application No. 1-165723, for example.
Regarding (2), see Japanese Patent Application No. 5-57263, for example. (1) As shown in FIGS. 23 and 25, a pipe coil (LWC) 100, 100 ... Made by winding a metal thin pipe having a total length of several thousand meters into a coil is a square tray 101. This tray 1 is placed horizontally on top
01 is conveyed by the conveying roller 125. Tray 10
Shelf boards 10 with columns 102, 102 ...
The pipe coils 100 are horizontally supported on the shelf plates 103 and 103, so that the pipe coils 100 are stacked and held in three stages. Further, a mouthpiece 104 for supplying purge gas is fixedly provided on one side of the tray 101, a lower end is fitted to the mouthpiece 104 to vertically establish a gas distribution pipe 105, and a connection port formed in the gas distribution pipe 105. Pipe coil 1 for each of 106, 106, 106
One end of 00, 100, 100 is fitted and joined. Base 10
4, a connection port 107 is formed on the vertical surface facing the inner wall of the furnace, the connection port 107 being expanded outward in a conical shape.

As shown in FIGS. 23 to 25, when annealing the pipe coils 100, 100 ... In the continuous annealing apparatus, the tray assembly as described above is preliminarily constructed by manpower or a crane. One end of the pipe coil 100, 100, 100 on 101 is connected to the connection port 106,
106, 106 are connected in advance, and this is connected to the entrance table 1
The first vacuum processing chamber 109 is charged from 08. Then, the opening / closing doors 110 and 110 'are closed, and the inside of the processing chamber 109 is connected to a vacuum pump (not shown) to degas. Then, the pressure is restored by supplying DX gas (exothermic gas) as an atmospheric gas to the processing chamber 109. In this way, when the first vacuum processing chamber 109 can be replaced with DX gas, the radiant tube 111 is used to pipe pipes 100, 100, 10
0 is preheated to about 200 ° C. Then the door 11
Open 0 ', 112 to open this pipe coil 100, 10
Move 0,100 to the second vacuum processing chamber 113, and open / close door 1
Close 12, 112 '.

The pipe coils 100, 100, 100 loaded in the second vacuum processing chamber 113 have stoppers 114, 1
The tray 101 is clamped by 15 and, at the same time, is fixed in place by the pressing pieces 116, 117, 118.
Therefore, the processing chamber 113 is again connected to the vacuum pump and degassed. Then, under this vacuum state, the DX gas is supplied through the purge gas supply pipe 119 attached to the base 104, and the pipe coils 100, 100, 1 are supplied through the gas distribution pipe 105.
00 gas is supplied into each pipe from one end. At that time, the rolling oil adhering to the inner surface of the pipe had a high temperature due to preheating and was easily vaporized and vaporized due to the low atmospheric pressure. It is driven to the end and discharged into the processing chamber 113. Therefore, the atmospheric pressure in the processing chamber 113 gradually rises and is restored. When the processing chamber 113 is restored in this way, the processing chamber 113 is again evacuated to a vacuum state, the vapor of rolling oil is swept from the inside of the processing chamber 113, and DX gas is again supplied to the processing chamber 113.
Restore by supplying to.

Thus, the pipe coils 100, 100, 1
At 00, the rolling oil and the like adhering to the inner surface and the outer surface are wiped out. Then, this pipe coil 100, 1
00 and 100 are moved to the heating chamber 120 and heated and ablated in a DX gas atmosphere at a predetermined annealing temperature in a non-oxidized state.
Then, it is moved to the forced cooling chamber 121, cooled to 70 ° C. or lower, and transferred to the rear chamber 122. In the rear chamber 122, the forced cooling chamber 12
The atmosphere gas flowing in from 1 is replaced with air, and the opening / closing door 12
3 is opened and the pipe coils 100, 100, 100 are inserted onto the outlet table 124.

(2) As shown in FIGS. 26 and 27,
Reference numeral 130 indicates a continuous annealing furnace as an example of a heat treatment device for a pipe coil. Explaining the continuous annealing furnace,
Reference numeral 131 is a furnace, which has an inlet 132 at one end and an outlet 133 at the other end, and is provided with openable and closable doors 134 and 135, respectively. Reference numeral 136 is a heating chamber provided with a heating means (not shown) in the furnace, and reference numeral 137 is a cooling means (not shown).
In the cooling chamber, the inside of each is a storage space capable of storing one pipe coil. Further, they are separated from each other by a partition wall 138. Reference numeral 139 is a communication port provided in the partition wall 138, and is provided with a door 140 that can be opened and closed. Reference numeral 141 denotes a transport roller, which is provided over the entire heating chamber and cooling chamber. Code 14
Reference numeral 2 denotes a known circulation fan for circulating the gas for heat treatment.

The annealing of the pipe coil 143 by the annealing furnace 130 will be described. Pipe coil 143 is tray 1
First, it is carried into the heating chamber 136 by the roller 141 while being placed on the table 44. The pipe coil 143 is the heating chamber 13.
When it is carried into the inside 6, the advancing / retreating device 145 is operated to advance it toward the air supply pipe 146 and press it against it. As a result, the hollow portion of the air supply port member 147 and the hollow portion of the receiving port member 146 are in communication with each other. In this state, the pipe coil 143 is heated by the atmospheric gas in the furnace by the operation of the heat source in the heating chamber 136 and the circulation fan 142. The heating of the pipe coil 143 as described above is continued for a predetermined time, and the pipe coil rises to a predetermined high temperature for annealing (a temperature higher than the evaporation temperature of rolling oil). Oil (for example, rolling oil) attached to the inside of the pipe in the pipe coil 143 due to the temperature rise of the pipe coil 143.
Are all vaporized into a gaseous state. When the above-mentioned temperature raising process approaches the end, the oil removal operation in the pipe is performed.

The oil removal work is performed as follows. In the surge tank 149, a gas for oil discharge, which is supplied from a gas supply source (not shown) and is pressurized by the compressor 150, is stored in advance. As the gas for discharging oil, a gas that does not adversely affect the heated pipe, for example, air is used when the pipe is made of aluminum, and non-oxidizing gas such as nitrogen is used when the pipe is made of copper or the like. The temperature of the gas in the tank 149 is maintained at a high temperature sufficient to maintain the evaporation state of the oil adhering in the pipe by heating with the sheath heater 151, for example, a temperature higher than the evaporation temperature. When the heating process of the pipe coil 143 approaches the end as described above, the solenoid valve 152 is opened, and the high temperature oil discharge gas in the surge tank 149 passes from the air supply port member 147 to the port member 146 and is transferred to the pipe coil 143. It is sent to one end 143a of the pipe.

By feeding such a high temperature gas,
The oil vaporized in the pipe to become gas is pushed by the fed gas and flows out from the other end of the pipe in the pipe coil 143 in a state where the vaporized state is maintained. The feeding of high temperature gas as described above,
This is continued for a sufficient time so that all the oil vaporized in the pipe to become a gas is discharged from the pipe. The time varies depending on the length of the pipe in the pipe coil 143, but is, for example, several seconds to several tens of seconds. When the oil discharge is completed as described above, the solenoid valve 152 is closed again,
The supply of oil discharge gas stops. After that, the air supply port member 1
After retracting 46, the pipe coil 14 in the heating chamber 136
The roller 3 is conveyed to the cooling chamber 137 by the operation of the roller 141, in which the well-known cooling for annealing is performed, and after cooling is completed, it is sent out from the outlet 133.

[0012]

However, in the above-mentioned prior art, the purge gas contaminated with oil is discharged from the inner pipe end of each pipe coil, but the discharged purge gas diffuses. , Adheres to the inner surface of the wall of the annealing furnace, and as a result, the inner surface of the furnace wall becomes dirty with oil. As a result, the oil adhering to the inner surface of the furnace wall is re-evaporated and adheres to the pipe coil being annealed, and the annealing furnace must be frequently maintained, which is troublesome.

Further, since the pipe coils are loaded through the shelf plate rather than stacking the trays in a plurality of stages, the number of pipe coils loaded is small (about 3), the annealing production efficiency is low, and the tray assembly is There is a problem that the stability of the cubic is also low.

The present invention has been made in view of the above-mentioned problems of the prior art, and efficiently pollutes the pollutant gases discharged from the inner pipe ends of the pipe coils to raise them and anneal them. By efficiently guiding outside the furnace,
It is an object of the present invention to provide a tray assembly for a continuous annealing furnace and a continuous annealing furnace in which the inner wall of the annealing furnace is not contaminated with oil and pipe coils can be stably loaded.

[0015]

The present invention for achieving the above object provides a tray assembly in which a plurality of trays each having a plurality of pipe coils that can be stacked via a plate member are vertically stacked. A through hole is formed in the center of each of the tray and each plate member.

Further, one end of a tubular gas guide member whose diameter is expanded downward is fixed to the lower surface of each tray around the through hole.

Further, the tray assembly is an assembly of 6 pipe coil and 3 tray trays in which trays in which two pipe coils are stacked are stacked in three stages.

In the continuous annealing furnace of the present invention, when the tray assembly is in a predetermined annealing position on the ceiling wall of the continuous annealing furnace for accommodating the tray assembly and annealing each pipe coil. An exhaust port is formed at a position substantially coaxial with the through holes of each tray and each plate member of the tray assembly.

The operation of the present invention will be described below. In the invention according to claim 1, when purging the pipe in each pipe coil of the tray assembly in the continuous annealing furnace, a purging gas is pumped from the outer pipe end of each pipe coil, and each pipe is pumped. The oil-containing gas discharged from the inner pipe end of the pipe in the coil rises and further rises through the through holes of the tray and the plate member. In this way, the gas discharged from the inner pipe end of each pipe coil merges and rises without diffusion. The combined gas is discharged to the outside of the annealing furnace.

In the invention according to claim 2, the discharged gas is guided by the gas guide member provided on the lower surface of the tray to easily pass through the through hole of the tray, and the merging is further facilitated. .

According to the fourth aspect of the invention, an exhaust port is provided right above the tray assembly of the continuous annealing furnace, and the combined gas is automatically exhausted through this exhaust port.

[0022]

Next, an embodiment of the present invention will be described with reference to the drawings. 1 is a schematic plan view (top view) of a pipe coil (also called level wound coil (LWC)) continuous annealing equipment, and FIG. 2 is an assembly area A of FIG.
1 is an enlarged plan view of the side 1 (the left half in FIG. 1), and FIG. 3 is an enlarged plan view of the disassembly area A2 side (the right half in FIG. 1) of FIG. FIG. 4 is a front view of the tray assembly.

First, the tray assembly will be described. FIG. 4 shows six level wound coils (LWC) 6a to 6f.
6 shows a tray assembly 5 having 6 stages of pipe coils and 3 stages of trays. In this tray assembly 5, a lower tray 7a, a middle tray 7b and an upper tray 7c are stacked via a column 8, and each of the trays 7a to 7c has two LWCs 6a and 6b vertically stacked. LWC6c,
6d, LWCs 6e, 6f are placed respectively.

FIG. 6A shows a plan view (top view) of the lower tray of the tray assembly, FIG. 6B shows a front view thereof, and FIG. 7A shows the middle tray (or upper tray) of the tray assembly. A plan view (top view), (b) is a front view, (a) of FIG.
(B), (c) is an enlarged view of the piping part of a lower tray, a middle tray, and an upper tray, respectively.

As shown in FIGS. 4, 6 and 7, a substantially rectangular lower tray 7a having columns 8 integrally provided at the four corners of the upper surface.
The middle tray 7b is stacked on the column 8. As will be described later, the middle tray 7b has substantially the same structure as the lower tray 7a. The upper tray 7c is stacked on the column 8 of the middle tray 7b. The upper tray 7c has the same structure. Each of the trays 7a to 7c has a pipe coil 6a to 6f.
Are stacked two by two. A circular iron plate 9 as a plate member is placed on each of the pipe coils 6a to 6f. That is, in each tray 7a, 7b, 7c, the two pipe coils 6a to 6f are stacked via the iron plate 9, and the iron plate 9 is placed on the upper-stage pipe coils 6b, 6d, 6f. Thereby, each tray 7a, 7
In b and 7c, the lower iron plate 9 stabilizes the loading of the lower pipe coils 6a, 6c, 6e, and the weight of the upper iron plate 9 causes the upper pipe coils 6b, 6d,
6f is pushed downward and becomes stable.

Each of the trays 7a, 7b, 7c and the iron plate 9 has through holes 10 and 11 formed in the center thereof, as shown in FIG. Further, the iron plate 9 is a circular plate member larger than the outer shapes of the pipe coils 6a to 6f, as shown in FIG. Four fan-shaped cushioning members 12 are attached to the upper and lower surfaces of the iron plate 9 at intervals of 90 degrees in the circumferential direction. The cushioning member 12 is made of, for example, rubber or urethane, so that the pipe coil 6a.
I try not to scratch 6f. Also, each tray 7
Around a through hole 10 on the lower surface of a to 7c, one end of a cylindrical member (gas guide member) 21 whose diameter is expanded downward is fixed. Further, in FIG. 4, a cylindrical member (gas guide member) whose diameter is expanded downward is provided at the exhaust port 23 of the ceiling wall of the continuous annealing furnace 22.
One end of 24 is fixed. The exhaust port 23 is provided in the through hole 10 when the tray assembly 5 is in a predetermined annealing position.
It is in a position approximately coaxial with.

As shown in FIG. 8, each of the trays 7a to 7c is provided with two first and second pipes 13 and 14 for supplying the purge gas into the pipe coils 6a to 6f. The first pipe 13 is the lower pipe coil 6a, 6
The second pipe 14 supplies the purge gas to the upper pipe coils 6b, 6d, 6f. The structures of the first and second pipes 13 and 14 are slightly different in the lower tray 7a, the middle tray 7b and the upper tray 7c.

That is, first, the pipe of the lower tray 7a will be described. The first and second pipes 13 and 14 are supported by the support column 8 by a bracket, and the lower end of the first pipe 13 is connected via the pipe H _1. The first tray 13 is connected to the gas supply hole (base) 15a on one end surface of the lower tray 7a.
Has an upper end serving as a connection port connected to the lower end of the first pipe 13 of the middle tray 7b via a tube 16a.
The lower end of the second pipe 14 communicates with a gas supply hole (base) 15b on the other end surface of the lower tray 7a via the pipe H _2, and the upper end of the second pipe 14 is connected to the second tray of the middle tray 7b. It is a connection port that is connected to the lower end of the pipe 14 via a tube 16b. Then, the first pipe 13 and the second pipe
Elbows 18a and 18b in a branched form are provided in the middle of each of the pipes 14 of FIG.
8a and 18b are respectively connected to outer pipe ends 600a (see FIG. 5) of the lower and upper pipe coils 6a and 6b via tubes 17a and 17b, respectively. A convex tapered member 25 is fixed to the upper end of the column 8 of each tray 7a, 7b, 7c, and the tapered member 25 is provided at each of the four corners of the lower surface of each tray 7a, 7b, 7c. It is fitted in the four concave receiving members 26. As a result, the column 8 does not tilt, and the tray assembly 5 is stably loaded.

The pipe of the tray 7b in the middle stage will be described. The first pipe 13 is fixed to the column 8, and the lower end of the first pipe 13 is in the lower stage via the tube 16a as described above.
3 is connected to the upper end. Further, similarly to the above, a branched elbow 20a is provided in the middle, and the upper end is provided with the tube 19a.
Is connected to the lower end of the first pipe 13 of the upper tray 7c via. The elbow 20a is connected to the outer pipe end 60 of the lower pipe coil 6c of the middle tray 7b via the tube 27a.
0a (see FIG. 5). The second pipe 14 is fixed to the column 8, and the lower end thereof is formed by the tube 16b as described above.
Is connected to the upper end of the second pipe 14 of the lower tray 7a. Further, similarly to the above, a branch elbow 20b is provided in the middle, and the upper end is connected to the lower end of the second pipe 14 of the upper tray 7c via the tube 19b. The elbow 20b is connected to the outer pipe end 600a (see FIG. 5) of the upper pipe coil 6d in the middle tray 7b via the tube 27b.

Explaining the piping of the upper tray 7c, the first piping 13 is fixed to the column 8, and the lower end thereof is connected to the upper end of the first piping 13 of the middle tray 7b via the tube 19a as described above. It Further, similarly to the above, a branch elbow 28a is provided in the middle, and the upper end is closed. The elbow 28a is connected to the outer pipe end 600a (see FIG. 5) of the lower pipe coil 6e of the upper tray 7c via the tube 29a. Second pipe 1
4 is fixed to the column 8, and the lower end thereof is connected to the upper end of the second pipe 14 of the middle tray 7c via the tube 19b. Also, similar to the above, the elbow 2 branched in the middle
8b, the upper end is closed. This elbow 28b
Is connected to the outer pipe end 600a (see FIG. 5) of the upper pipe coil 6f of the upper tray 7c via the tube 29b.

With the above structure, as shown in FIGS. 4, 5 and 8, the lower tray 7 is placed in the continuous annealing furnace 22.
Plugs 228, 22 of purge gas supply pipes 211, 211 provided on the furnace side to the two gas supply ports 15a, 15b of a.
By inserting 9 respectively, the purge gas can be supplied into the lower pipe coils 6a, 6c, 6e of the trays 7a, 7b, 7c through the first pipes 13 and the tubes. The detailed structure shown in FIG. 8 will be described later. In addition, the upper pipe coil 6 of each tray 7a, 7b, 7c is provided through each second pipe 14 and each tube.
Purge gas can be supplied into b, 6d, and 6f, respectively. Here, the purge gas supplied to each of the coil pipes 6a to 6f is the inner pipe end 600 of the pipe coil 6a to 6f.
b (see FIG. 5), the discharged gas is as shown in FIG.
As shown by the middle arrow G, the iron plates 9 gather and rise through the central hole 11 and the central holes 10 of the middle and upper trays 7b and 7c. The increased exhaust gas is guided by the cylindrical member 24 of the continuous annealing furnace 22 and discharged from the exhaust port 23 to the outside of the furnace. In addition, the gas guide members 21 provided on the lower surfaces of the middle and upper trays 7b and 7c allow the pipe coils 6a to 6a.
The confluence of the gas discharged from 6f is improved. The exhaust port 23 is closed by a valve (not shown) during annealing.
Further, by forcibly sucking the gas through the exhaust port 23 by a suction mechanism (not shown), the gas discharge efficiency is improved, and it is possible to reliably prevent oil from adhering to the inner wall of the furnace.

Next, the transport path system of the continuous annealing equipment will be described. As shown in FIGS. 1 to 3, reference numeral 30 is an assembly loading / unloading path for transferring the above-described tray assembly 5 in the assembly area A1 described below to the continuous annealing furnace 22, and reference numeral 31.
L is for transporting the six pipe coils stacked on a pallet (not shown) to position A in the assembly area A1.
WC carry-in / carry-out path, reference numeral 32 is a pallet carry-out / carry-out path for carrying the LWC-removed pallet to a predetermined storage location, and reference numeral 33 is for carrying an empty tray from the disassembly area K2 to the assembly area K1 side. A tray transport path, reference numeral 34 is an iron plate transport path (plate member unloading path) for transporting an iron plate from the disassembly area K2 to the assembly area K1 side, and reference numeral 35 is for transporting a paperboard produced in the disassembly area K2 to a predetermined place. , 36 is an assembly transport path for transporting the tray assembly unloaded from the continuous annealing furnace 22 to the disassembly area K2 side, and 37 is a temporary tray assembly unloaded from the continuous annealing furnace. The assembly bypass transport path to be bypassed in the case of waiting for the LWC, reference numeral 38 is an LW for transporting the LWC of the tray assembly disassembled in the disassembly area K2 to a predetermined packing place for packing. A packing conveyor path (pipe coil output path).

In FIGS. 2 and 3, the transfer device (loading device) 40 on the input side and the transfer device (disassembly device) 41 on the output side are provided at positions deviated from the transport path, respectively. This is because the transfer device (loading device) 40 on the input side and the transfer device (disassembly device) 41 on the output side overlap with the above-mentioned transport path, respectively, making it difficult to see the drawing. 1, the transfer device (loading device) 40 on the input side and the transfer device (disassembly device) 41 on the output side are each assembled in an assembly area indicated by a dashed-dotted line above the transport path. It is provided in K1 and dismantling area K2.

Transfer device (loading device) on the input side of the present invention
40 is three kinds of trays 7a, 7b, 7c and six iron plates 9
And 6 pipe coils (LWC) 6a-6f,
The tray assembly 5 shown in FIG. 4 is assembled. This tray assembly 5 is transferred to the continuous annealing furnace 22 in this state, and after the pipe coils 6a to 6f are annealed, the tray assembly 5 is carried out of the continuous annealing furnace 22. The transfer device (disassembly device) 41 on the output side disassembles the tray assembly 5 that has been carried out.

The main components of the transfer device (loading device) 40 on the entry side are a fixed device main body 40a, a coil centering device (robot) 1, an LWC and a paperboard transfer robot 2, and an LWC transfer robot. (Pipe coil transfer device) 3,
The tray and the iron plate transfer robot (tray and plate member transfer device) 4. In addition, the transfer device (disassembly device) 4 on the output side
The main constitution of No. 1 is the fixed device main body 41a and the L
LWC transfer robot 3a similar to WC transfer robot 3
And a tray and iron plate transfer robot 4a similar to the tray and iron plate transfer robot 4.

As described above, in FIG. 2 and FIG.
Reference numerals 1, 2, 3 and 4 attached to the transfer device (loading device) 40 on the input side are coil centering robots,
LWC and paperboard transfer robot, LWC transfer robot, tray and iron plate transfer robot are indicated by reference numerals A, B, C,
D, E, and F indicate positions where the operation described later is performed. At the position C, a pipe end detection device 42 described later is provided.
Is provided. Position D is an assembly position. Further, reference numerals 3a and 4a attached to the transfer device (disassembly device) 41 on the output side indicate an LWC transfer robot and a tray and an iron plate transfer robot, respectively, and reference symbols A and
B, C, and D indicate positions where the operation described later is performed.

Next, the detailed structure of each device will be described. It should be noted that the configuration of each device described below is an example, and includes modifications and design changes within the scope not departing from the technical idea of the present invention. 10 is a sectional view of the coil centering device 1 according to the present invention, FIG. 11 is a plan view (top view) of FIG. 10, and FIG. 12 is a downward direction (arrow L direction) of FIG.
It is an enlarged view of the principal part seen from. As shown in FIGS. 10 to 12, the apparatus body 4 of the transfer apparatus 40 on the entry side is roughly shown.
The main body portion 45 of the coil centering device 1 is fixed to an XZ moving table (XZ moving mechanism) 43 provided at 0a. An opening / closing cylinder 44 is fixed to the center of the lower surface of the main body 45 with the rod 44a thereof facing vertically downward.

On the upper plate 45a of the body 45, the X-Z
The moving table 43 is provided with a positioning pin 45b for fitting and positioning the Z table. An opening / closing cylinder 44, which will be described later, is fixedly arranged on the lower surface of the central portion of the fixed lower plate 46 of the main body 45 so that the rod 44a thereof is directed vertically downward. Further, below the fixed lower plate 46, the large-diameter fixed plate 4 is provided at each of four corners with four support columns 47 interposed therebetween.
8 is fixed to the fixed lower plate 46. 4 above
A movable plate 50 is supported at four corners of the book strut 47 via linear bushes 49 so as to be vertically movable. The opening / closing cylinder 44 is provided at the center of the movable plate 50.
Rods 44a are connected. With such a configuration, when the rod 44a of the opening / closing cylinder 44 is expanded / contracted, the movable plate 50 can be moved up and down (see the arrow Z direction).

Below the movable plate 50, four columns 5 are provided.
An opening / closing drive unit 52, which will be described later, having a cam follower 51 is fixed via 0a. Also, the large-diameter fixing plate 4
Four brackets 53 are fixed at 8 at an angle of 90 degrees, and a substantially halfway portion of the opening / closing claw 54 is rotatably supported at the lower end of each bracket 53. And opening and closing claw 5
One end (upper end) of 4 is swingably supported by the opening / closing mechanism part 52, and the other end (lower end) of each opening / closing claw 54 is in the vertical state on the inner peripheral surfaces of the pipe coils 6a to 6f. This is the part that comes into contact. Reference numeral 56 indicates a sensor provided on each opening / closing claw 54, and this sensor 56 detects when the lower end of the opening / closing claw 54 is in a vertical state. With the above configuration, when the rod 44a of the opening / closing cylinder 44 is retracted, the opening / closing mechanism 52 is moved up together with the movable plate 50, whereby the four opening / closing pawls 54 are closed in a direction in which their tips are close to each other. , The bracket 53 rotates about the fulcrum (see the alternate long and short dash line). The opening / closing cylinder 44
When the rod 44a is projected, the opening / closing mechanism 52 is lowered together with the movable plate 50, whereby the four opening / closing claws 54 are rotated about the bracket 53 as a fulcrum in a direction in which their tips are apart from each other and open. (See solid line).

A sensor support shaft 57 is provided on one end side of the large-diameter fixing plate 48 so as to be vertically movable via a linear bush 58, and the sensor support shaft 57 is urged downward by a dog 59. A stopper buffer 60 is fixed to the lower end of the zener support shaft 57. On the other hand, large-diameter fixing plate 48
A proximity switch 60a for detecting the upper end of the sensor support shaft 57 is fixed to.

The XZ moving mechanism 43 moves the entire coil centering device 1 to a predetermined measuring position and then lowers it. As a result, the stopper buffer 60 provided at the lower end of the sensor support shaft 57 is attached to the pipe coil 6a.
The proximity sensor 60 is brought into contact with the upper end surfaces of (6b to 6f).
When a detects the sensor support shaft 57, the lowering of the coil centering device 1 is stopped. Then, the rod 44a of the opening / closing cylinder 44 projects, together with the movable plate 50,
The opening / closing mechanism part 52 descends, whereby the four opening / closing claws 5
4 rotates about the bracket 53 as a fulcrum in a direction in which the lower end portions thereof are apart from each other and opens, and the four opening / closing claws 54 contact the inner peripheral surfaces of the pipe coils 6a (6b to 6f). As a result, the pipe coil 6a (6b-
6f) can be centered. The open / close claws 54 are opened until the sensor 56 at the lower end detects that the claws 54 have become vertical. After the centering, the opening / closing claws 54 are closed, and then the whole centering device 1 rises and returns to a predetermined standby position.

FIG. 13 is a front view of the pipe end detecting device according to the present invention, FIG. 14 is a right side view of FIG. 13, FIG. 15A is an enlarged view of the detecting portion of FIGS. 13 and 14, and FIG. FIG. 16B is a bottom view of FIG. 16A viewed from below, and FIG. 16 is an enlarged cross-sectional view of the proximity sensor unit of FIG. The pipe end detection device 42 is provided at the position C of the assembly area K1, and the cylinder 61 is provided in the device frame (device body) 42a.
Is fixed at one end. Rod 6 of this cylinder 61
One end of a substantially L-shaped link member 62 is rotatably fixed to 1a, and the other end is fixed to the first cylindrical shaft 63. A first pin shaft 64 is rotatably inserted in the first cylindrical shaft 63, and both ends of the first pin shaft 64 are fixed to a pair of fixing plates 65a and 65b. One end of the first arm 66a is fixed to the first cylindrical shaft 63. Both ends of the second pin shaft 67 are fixed to the pair of fixing plates 65a and 65b, and the second pin shaft 67 penetrates the second cylindrical shaft 68 as described above. One end of a second arm 66b parallel to the first arm 66a is fixed to the second cylindrical shaft 68.

The other ends of the first arm 66a and the second arm 66b have a pair of inner plate members 69a, 6a.
9b. A pair of inner plate members 69a, 69
A pair of outer plate members 70a and 70b are rotatably provided on the outer side of b with the other end of the second arm 66b as a fulcrum. Then, the pair of outer side plate members 70a, 7
0b is urged by the tension coil spring 71 to the position indicated by the solid line. The pair of outer plate members 70a, 7
At 0b, one ends of two coil contact rollers 72a and 72b are rotatably provided. This coil contact roller 7
The lengths of 2a and 72b are pipe coils 6a (6b to 6f).
It is almost equal to the height dimension of. As shown in FIG. 16, the outer plate members 70a and 70b are provided with a proximity sensor 73.
Is fixed via a bracket 74 having an elongated hole 73a, and the detection surface of the proximity sensor 73 normally faces the inner plate member 69a.

In the pipe end detecting device 42 having the above structure,
When the pipe coils 6a (6b to 6f) are transferred to the position C, the rods 61a of the cylinder 61 are retracted to move the arms 66a and 66b at the standby position indicated by the alternate long and short dash line in advance to the pipe coils 6a (6b to 6f). ) Side (see solid line). Then, the two coil contact rollers 72a and 72b are connected to the pipe coil 6a (6b to 6b).
It comes into contact with the outer peripheral surface of f). Here, the pipe coil 6a
A rotary table (not shown) on which (6b to 6f) is mounted is driven to rotate the pipe coil 6a (6b to 6f) (see arrow P). As a result, the pair of coil contact rollers 72a and 72b rotate while the pipe coil 6a (6b) is rotated.
~ 6f) trace the outer peripheral surface of the pipe coil 6a (6b ~
When the outer pipe end 600a of the pipe in 6f) approaches the pair of coil contact rollers 72a, 72b, the pair of outer plate members 70a, 70b causes the tension coil spring 7 to move.
It opposes the urging force of 1 and rotates around a fulcrum. As a result, the proximity sensor 73 is disengaged from the inner plate member 69a, whereby the outer pipe end 600a of the pipe in the pipe coil 6a (6b to 6f) can be detected. After the detection, the rod 61a of the cylinder 61 is made to project so that the arms 66a and 66b at the measurement position are pivoted to the device body 42a side until they hit the limit switch 77 on the device body 42a side.

When it is determined from the above detection result that the position of the pipe coil 6a (6b to 6f) at the position C is displaced in the circumferential direction, the rotary table is driven by the displacement amount and the pipe coil is moved. 6a (6b to 6f) is rotated to set the regular position. As described above, the reason why the position of the outer pipe end 600a of the pipe coil 6a (6b to 6f) is accurately set to the regular position is that the purge gas is introduced into the pipe coil 6a (6b to 6f) in the subsequent continuous annealing furnace. To facilitate connection between the outer tube end 600a and the tube (see FIG. 4).

FIG. 17 is a schematic plan view of the tray and iron plate (plate member) transfer device 4 according to the present invention, and FIG. 18 is an enlarged sectional view showing a half taken along the line QQ of FIG. The tray and the iron plate transfer device 4 can clamp four inner circumferential ribs 75 of the tray 7a (7b, 7c) in the circumferential direction by a pair of four clamp members 76a, 76b and lift them up. A device capable of handling both the tray 7a (7b, 7c) and the iron plate 9 capable of sucking and lifting the outer peripheral portion of the iron plate (plate member) 9 by the eight suction pads 78. Hereinafter, the detailed structure will be described, but the structure is not limited to this, and if both the tray and the iron plate can be handled,
It may have any structure.

By the YZ moving mechanism 79, the Y direction and Z
The device main body 92 that is moved in the direction is provided with a first support frame 80 that extends in the horizontal direction. On this support frame 80, four clan struts 81 (three clamp struts not shown) are vertically installed at intervals of 45 degrees. Since the configuration of the four pairs of clamp members 76a, 76b is the same, one pair of clamp members 76a, 76b
76b will be described. A substantially L-shaped tray detection member 82 is provided at the lower end of the clamp column 81 so as to be vertically movable, and the tray detection member 82 is biased downward by a tension coil spring 83. A first clamp member 76a is fixed to the lower end of the clamp column 81 with a bolt or the like. Clamp support 8
1 is provided with a micro switch 84, and when the detection piece 85 abuts on the contact 84a of the micro switch 84, it can be detected that the tray contact member 82 has come into contact with the rib 75 of the tray.

A first bracket 86 is fixed to the lower end of the clamp column 81, and a clamp cylinder 87 is rotatably provided on the first bracket 86. One end of a first link member 88 is rotatably provided on the rod 87a of the clamp cylinder 87, and the other end of the first link member 88 is connected to the clamp strut 81.
Is rotatably connected to a second bracket 89 fixed to the. On the other hand, one end of the second clamp member 76b is rotatably provided on the second bracket 89, and a bolt 90 is screwed into the lower end portion of the clamp member 76b,
Further, the bolt 90 is held by two stopper nuts 91. The head of the bolt 90 and the first clamp member 76a clamp the standing rib 75 of the tray.

One end of the second link member 91 is rotatably connected to the middle portion of the second clamp member 76b, and the other end of the second link member 91 is connected to the clamp cylinder 8.
7 is rotatably connected to the rod 87a. With the above configuration, when the rod 87a of the clamp cylinder 87 is projected, the second clamp member 76b rotates about the connecting portion to the second bracket 89 as a fulcrum (see an arrow), and the first clamp member 76a and the second clamp member 76b rotate together. Standing rib 75 for tray
Can be pinched. When the rod 87a of the clamp cylinder 87 is retracted, the second clamp member 76b rotates about the connecting portion to the second bracket 89 as a fulcrum (see an arrow) and becomes substantially horizontal, so that the first clamp member 76a The holding of the standing rib 75 of the tray by the above can be released.
A tray gripping mechanism is constituted by the above-mentioned four pairs of clamp members 76a and 76b, the clamp cylinder 87 and the like.

Regarding the plate member suction mechanism, a second support frame 93 which is vertically driven by a rack and pinion mechanism (not shown) is provided in the apparatus main body 92 so as to extend horizontally. On the outer peripheral portion of the second support frame 93, eight suction shafts 94 (seven suction shafts not shown) are vertically provided at equal intervals in the circumferential direction. Since these eight suction shafts 94 have the same structure, one suction shaft 94 will be described. The upper end of the suction shaft 94 is
The first support frame 80 is supported so as to be movable in the vertical direction by a slight amount, and the middle portion thereof is supported by the linear bushing 9.
The first supporting frame 80 is penetrated through the first supporting frame 80. Further, the suction pad 78 is fixed to the lower end of the suction shaft 94,
A vacuum exhaust system (not shown) is connected to the suction pad 78 via a tube 96. A dog 97 is fixed to the upper end of the suction shaft 94, and when the contact piece 98a of the micro switch 98 fixed to the second support frame 93 comes into contact with the dog 97, suction is performed by the suction pad 78. ing.

The operation of the tray and iron plate transfer device 4 having the above structure will be described. First, the tray 7a (7b, 7c)
When clamping the tray coil and iron plate transfer device 4 by the YZ drive mechanism 79, the pipe coil 6a (6b-
6f) is moved right above and further lowered to bring the tray contact member 82 into contact with the rib 75 of the tray. The tray and the iron plate transfer device 4 are lowered until the tray contact member 82 rises against the elastic force of the coil spring 83 and the detection piece 85 contacts the contact 84a of the micro switch 84. Here, by operating the clamp cylinder 87 and projecting its rod 87a,
The second clamp member 76b is rotated to clamp the standing rib 75 with the first clamp member 76a. Then, the tray 7 and the iron plate transfer device 4 are moved to a predetermined place by the YZ drive mechanism 79, and the tray is released by releasing the clamps.
c) can be transferred.

When the iron plate 9 is transferred, the tray and the iron plate transfer device 4 is moved right above the iron plate 9 by the YZ drive mechanism 79, and the second support is performed by the rack-pinion mechanism. The frame 93 is lowered and the suction pad 7
8 is pressed against the iron plate 9. The suction pad 78 receives a reaction force upward from the iron plate 9 and slightly rises, and the micro switch 98
When the dog 97 is detected, the inside of each suction pad 78 is evacuated. Then, the YZ drive mechanism 79 moves the tray and the iron plate transfer device 4 to a predetermined place, and by releasing the suction here, the iron plate 9 can be transferred.

20 is a sectional view of the pipe coil transfer device 3 according to the present invention, FIG. 21 is a bottom view of FIG. 20, FIG. 22 (a) is an enlarged view of the central portion of the link mechanism, and FIG. )
FIG. 4 is an enlarged view of a mounting portion of a catching (pressing member).
The pipe coil transfer device (LWC transfer device) 3 is provided in the YZ drive mechanism 99 in the assembly area K1 and is moved in the YZ direction. In the YZ drive mechanism 99, the link member opening / closing cylinder 200 has a rod 2
00a is fixed so as to face vertically downward.
A frame member 201 extending in the horizontal direction is fixed to the cylinder 200. A cylindrical member 202 is integrally fixed to the outer peripheral surface of the rod 200a of the cylinder 200 so as to cover it. The outer peripheral surface of the cylindrical member 201 has a pair of upper and lower link members 203 at an angle of 90 degrees.
One ends of a and 203b are rotatably connected. There are a total of eight link members, which are arranged radially. The other ends of the pair of upper and lower link members 203a and 203b have catching members 204a and 204 having a substantially bow shape, respectively.
It is rotatably connected to b, 204c and 204d.
Each catching member 204a, 204b, 204c, 2
04d is supported by the frame member 201 and the lower support plate 206 movably in the radial direction of the rod 200a via a pair of upper and lower guide members 205a and 205b.

A guide shaft 2 is provided at the lower end of the cylindrical member 201.
A lower support plate 206 is fixed to the lower end of the guide shaft 207. Each catching member 204
The a, 204b, 204c and 204d are supported by the frame member 201 and the lower support plate 206 movably in the radial direction of the rod 200a via a pair of upper and lower guide members 205a and 205b. Rod 2 of cylinder 200
When 00a is projected, together with this rod 200a,
The cylindrical member 202 descends, whereby each link member 20
3a, 203b open, each catching member 204
a, 204b, 204c, 204d spread outward,
As a result, the rubber member 208 on the outer periphery of the pipe coil 6
It contacts the inner peripheral surface of a (6b to 6c). Although FIG. 21 shows a state in which only the two right-hand catching members 204a and 204d are expanded, in reality, all the catching members 204a to 204d are expanded in synchronization.

Regarding the operation of the pipe coil transfer device 3 having the above structure, the YZ moving mechanism 99 positions the entire pipe coil transfer device 3 directly above the pipe coils 6a (6b to 6f). , Each catching member 204
a, 204b, 204c, 204d are pipe coils 6a
Lower until it is completely within (6b-6f). Here, by driving the cylinder 200 and lowering the rod 200a thereof, the respective catching members 204a, 2a
04b, 204c, 204d are moved outward (toward the inner peripheral surface of the pipe coil), and the rubber member 208 thereof is brought into contact with the inner peripheral surface of the pipe coil 6a (6b to 6f).
Here, the pipe coil transfer device 3 as a whole is moved to a predetermined location by the YZ moving mechanism 99, and the cylinder 20 is moved.
By retracting the rod 200a of 0, the pipe coils 6a (6b to 6f) are lowered.

Regarding the LWC and paperboard transfer device 2, the LWC transfer device 3 is provided with a suction pad (similar to the suction pad for sucking the iron plate) for adsorbing the paperboard. Therefore, the description thereof is omitted.

Next, the assembling process for constructing the tray assembly will be described with reference to Table 1 in addition to the drawings. Table 1 shows each position A, B, in the assembly area A1.
9 is a table showing the assembling operations performed in each of the devices 1, 2, 3, and 4 in C, D, E, and F by taking the time axis in the vertical direction of the table. Therefore, the steps in the lateral direction of the table are performed simultaneously.

[Table 1] The LWC loading / unloading path (LWC loading roller conveyor) 31 is
The coils, which are vertically stacked in six stages on a wooden pallet and are transported, are transported to position A. The coil centering device (robot) 1 (see FIG. 10 to FIG. 12) moves above the position A, and then lowers the open / close claws 54 in the closed state to lower the uppermost stage (6 stages) on the wooden pallet. Eye) into the LWC. Here, by opening and closing each opening / closing claw 54 vertically, it is brought into contact with the inner circumference of the uppermost LWC whose center position has been displaced, and the LWC is moved in the radial direction to be displaced and centered. . After completion, the coil centering robot 1 retracts from the position A to a predetermined standby position.

After that, the LWC and paperboard transfer robot 2 moves to a position above the position A, and the respective catching members grip (catch) the centered uppermost LWC, and the suction pad causes the uppermost LWC to move. LW
Adsorb the paperboard directly below C.

On the other hand, the tray and iron plate transfer robot 4 (see FIGS. 17 and 18) grips (clamps) the lower tray 7a at the position E at the same time as the centering step, and at the same time as the LWC catching step. , The lower tray 7a is lowered to the position (assembly position) D.

After that, the LWC and the paper board transfer robot 2 moves above the position B to move the LWC to the position B.
Then, the paperboard is dropped onto a paperboard conveying path (paperboard unloading roller conveyor) 35. After this, L
The WC and paperboard transfer robot 2 moves from position B to the standby position. The paperboard is transported to a paperboard storage space (not shown) by the paperboard transport path 35.

At position B, the LWC is reversed by the reversing machine (not shown) and moved to the rotary table (not shown) at position C, and then the reversing machine returns to position B.

Thereafter, at the position C, as shown in FIGS. 13 to 16, the rod 61a of the cylinder 61 of the pipe end detecting device 42 (see FIGS. 13 to 16) is retracted,
The coil contact rollers 72a and 72b are brought into contact with the outer peripheral surface of the LWC 6a. Here, when the coil contact roller 72b comes into contact with the outer tube end 600a protruding from the outer peripheral surface of the LWC 6a by rotationally driving the rotary table (see arrow P), the outer plate members 70a and 70b pull the coil spring 7.
The proximity sensor 73 is disengaged from the inner side plate member 69a by moving as shown by an arrow in the figure against the elastic force of No. 1 to detect the outer pipe end 600a. When the detected position of the outer pipe end 600a is deviated from the regular position, the rotary table is rotated by the deviated angle to bring the LWC to the regular rotational position. In this way, the position of the outer pipe end 600a is made accurate, and when the outer pipe end 600a and the pipe of the tray are connected later by, for example, a tube, if the positions are displaced, this connection becomes difficult. Because.

Next, similarly to the above, the uppermost LWC of the five-tiered vertically stacked LWC on the wooden pallet at position A
On the other hand, the centering step, the LWC catching and paperboard suctioning step, the LWC lowering step, the reversing step, the reversing machine returning step and the pipe end detecting step are performed.

The following steps are carried out during each step for the second stage LWC as described above. That is, at the same time as the centering step, at position C, the LWC transfer robot 3 catches the LWC after detecting the pipe end. After this, L
Simultaneously with the WC catching and paperboard suction steps, the LWC transfer robot (see FIGS. 20 to 23) 3 moves to position D and lowers the LWC to a predetermined position on the lower tray 7a, while simultaneously The iron plate transfer robot 4 attracts the iron plate at the position F. Then, in the reversing step, the tray / iron plate transfer robot 4 lowers the attracted iron plate onto the LWC at the position D.
Then, the above-mentioned second-stage LWC is placed on the second-stage iron plate 9, whereby two LWCs 6a,
6b is loaded via the iron plate 9.

Thereafter, the same steps as those described above are performed twice to construct the tray assembly 5 at the position D as shown in FIG. That is, the lower, middle, and lower trays 7a, 7b, 7c are sequentially stacked, and the LWCs 6a, 6b, LW are respectively placed on the respective trays 7a, 7b, 7c.
C6c, 6d, LWC6e, 6f are vertically stacked in two stages,
An iron plate 9 is placed on each of the LWCs 6a to 6f. As shown in FIG. 9, the iron plate 9 has a rectangular plate shape having a through hole 11 and a cushioning member 12 is attached to the upper and lower surfaces of the iron plate 9 at intervals of 90 degrees. It is attached. As a result, the iron plate 9 does not directly contact the LWCs 6a to 6f and is not scratched.

Then, as shown in FIG. 4, each tray 7
In the first and second pipes 13 and 14 of a, 7b and 7c,
The outer pipe ends 600a of the pipe coils 6a to 6f are connected via tubes, and the trays 7a, 7b, 7 are connected.
The first and second pipes 13 and 14 of c are connected to each other.
When the tray assembly 5 assembled as described above is transferred to the entrance side door 22c side of the continuous annealing furnace 22 by the assembly carry-in transport path (carry-in side roller conveyor) 30, the entrance side door 22c opens. , The tray assembly 5 is a continuous annealing furnace 22.
It is transferred to a predetermined position inside.

Here, an example of the internal structure of the continuous annealing furnace 22 will be described. As shown in FIG. 5, the tray assembly 5 is fixed to a fixed position (predetermined annealing position) so that it does not move, and the fixed position stop device 210 is opposed to the gas supply connection ports 15a and 15b of the lower tray 7a. Purge gas supply pipes 211 and 211 are provided on the wall of the furnace so as to move back and forth. That is, the home position stop device 210 is configured so that the carrying rollers 212, 2
At a position slightly lower than the path line of 12 ..., the lever 2 in the radial direction is provided at the outer projecting ends of the pair of horizontal shafts 213, 214 in the furnace width direction at intervals so that the lower tray 7a can be sandwiched from the front and rear.
15 and 216 are fixedly mounted, and the air cylinders 217 and 218 are connected to the levers 215 and 216, respectively.
The stoppers 221 and 222 are provided in the middle portion of 14 and the air cylinders 217 and 218 are operated to operate the horizontal shafts 213 and 214.
By rotating, the stoppers 221 and 222 project from the path lines of the transport rollers 212, 212, ... And come into contact with the front edge and the rear edge of the lower tray 7a so that the lower tray 7a is sandwiched from the front and rear. Further, in order to immobilize the lower tray 7a, which is stopped at a fixed position, to the tips of rods 225 and 226 which are provided so as to be able to move back and forth in the furnace by the operation of the cylinders 223 and 224 penetrating both side walls. The pressing pieces 219 and 220 are provided.

On the other hand, the purge gas supply pipes 211 and 211 penetrate the furnace wall and the cylinder 22 provided at the projecting end outside the furnace.
It moves back and forth by the operation of 8,228. The supply pipe 211,
Plugs 229 and 229 that are fitted to the gas supply connection ports 15a and 15b are provided at the tip of 211, respectively. Reference numeral 230 indicates a hose for supplying purge gas to the supply pipe 211 from a gas generator (not shown). In addition, the furnace wall penetrating portion of the supply pipe 211 is O
A ring 231 and a bearing 232 are provided, and a cooling water jacket 233 is provided to prevent overheating thereof. The structure of the furnace wall penetrating portion for maintaining such airtightness is also provided in the furnace wall penetrating portions of the horizontal shafts 213, 214 and the rods 225, 226.

The tray assembly 5 loaded in the continuous annealing furnace 22 holds the lower tray 7a by the stoppers 221 and 222, and at the same time, fixes it in place by pressing pieces 219 and 220. In this state, LWC
The (pipe coils) 6a to 6f are heated by the atmospheric gas in the furnace by the operation of the heat source (not shown) in the continuous annealing furnace 22. LWC (pipe coil) 6a as described above
The heating of 6f is continued for a predetermined time, and the LWCs (pipe coils) 6a to 6f rise to a predetermined high temperature for annealing (a temperature higher than the evaporation temperature of rolling oil). By the temperature rise of the LWC (pipe coil) 6a to 6f, all the oil (for example, rolling oil) adhering to the inside of the pipe in the LWC (pipe coil) 6a to 6f is evaporated and becomes a gas state.

When the above temperature rising process approaches the end, the cylinders 228 and 228 are started to activate the plugs 229 and 229.
Is inserted into the gas supply connection holes 15a and 15b of the lower tray 7a, and DX gas is supplied into the respective LWCs (pipe coils) 6a to 6f from the outer pipe ends 600a of the LWCs (pipe coils) 6a to 6f. At that time, the rolling oil attached to the inner surfaces of the pipes in the LWC (pipe coils) 6a to 6f has a high temperature due to preheating, and since the atmospheric pressure is low, the rolling oil is easily vaporized and vaporized. As DX gas is supplied from the tube end 600a, L
It flows out from the inner pipe end 600b of the pipe in the WC (pipe coil) 6a to 6f. Thus, the LWC (pipe coils) 6a to 6f are cleaned of the rolling oil and the like adhering to the inner and outer surfaces thereof.

Inner pipe end 600 of the pipe coils 6a-6f
b (see FIG. 5), the discharged gas is as shown in FIG.
As shown by the middle arrow G, the iron plates 9 gather and rise through the central hole 11 and the central holes 10 of the middle and upper trays 7b and 7c. The increased exhaust gas is guided by the cylindrical member 24 of the continuous annealing furnace 22 and discharged from the exhaust port 23 to the outside of the furnace. In addition, the gas guide members 21 provided on the lower surfaces of the middle and upper trays 7b and 7c allow the pipe coils 6a to 6a.
The confluence of the gas discharged from 6f is improved. The exhaust port 23 is closed by a valve (not shown) during annealing.
Further, by forcibly sucking the gas through the exhaust port 23 by a suction mechanism (not shown), the gas discharge efficiency is improved, and it is possible to reliably prevent oil from adhering to the inner wall of the furnace.

Next, the tray assembly 5 is moved to the cooling chamber 22a to cool each of the pipe coils 6a to 6f to 70 degrees or less, and the atmosphere gas flowing in from the continuous annealing furnace 22 is replaced with air to open / close the outlet door. 22c is opened and the tray assembly 5 is inserted into the assembly unloading / transporting path 36 (unloading conveyor).

As described above, the tray assembly 5 carried out from the cooling chamber 22a is transferred to the disassembly position A in the disassembly area A2 by the assembly transport path (carry-out roller conveyor) 36, and is disassembled here. Become.

The disassembling operation will be described with reference to Table 2 in addition to the drawings. Table 2 shows the disassembly process performed by the LWC transfer device (robot) 3a and the tray / iron plate transfer device (robot) 4a at each position A, B, C, D in the disassembly area A2 in the table vertical direction. 3 is a table showing axes. In addition, positions A, B,
C and D are a disassembly position, a tray carry-out position, an iron plate carry-out position, and a coil carry-out position, respectively.

[Table 2] First, the LWCs 6a to 6f and the first and second pipes 1
Remove all tubes (see Figure 4) from 3,14. At position A (disassembly position), the tray and iron plate transfer device 4a adsorbs the uppermost iron plate 9 and conveys it to position C and lowers it. Simultaneously with the step of lowering the iron plate 9, the LWC transfer robot 3a grips (catch) the uppermost LWC 6f.

Thereafter, the tray and iron plate transfer device 4a adsorbs the uppermost (fifth) iron plate 9 at position A, conveys it to position C, and lowers it. Simultaneously with this iron plate 9 suction step, the LWC transfer robot 3a lowers the gripped LWC 6f to the position D. Further, at the same time as the iron plate lowering process by the tray and the iron plate transfer device 4a, L
The WC transfer robot 3a is the uppermost (fifth) LWC 6e.
To catch.

Thereafter, the tray / iron plate transfer device 4a holds the upper tray 7c at the position A and lowers it to the position B. Simultaneously with the gripping (catching) step of the upper tray 7c, the LWC transfer robot 3a lowers the gripped LWC 6e at the position D.
As described above, the uppermost tray 7 of the tray assembly 5 is
Dismantling of c ends.

The same disassembly as described above is carried out for the next middle tray 7b of the second stage and the lower tray 7a of the first stage, and as a result, the tray assembly 5 having 6 coils and 3 trays is obtained. Be dismantled. The pipe coils 6a to 6f after annealing are L
It is transferred to a predetermined storage location by the WC packing transfer path (coil transfer line) 38 and prepared for shipment. The dismantled trays 7a, 7b, 7c are placed on the tray transport path 33 from the position B, transported to the assembly area A1, and provided for assembly. Then, the disassembled iron plate 9 is transported to the assembly area A1 by the iron plate transport path 34 and is provided for assembly. As described above, the tray assembly is automatically constructed, annealed and disassembled, and the tray assemblies can be annealed sequentially.

From the continuous annealing furnace 22 to the tray assembly 5
If the tray assembly of the preceding stage is in the process of being disassembled when the tray is unloaded, the tray assembly 5 that has been unloaded is placed on the standby transport path 37 until the disassembly of the preceding tray assembly is completed. , Wait here.

As described above, in this embodiment, when the tray assembly 5 is constructed, the pipe coils 6a to 6f can be automatically assembled and conveyed by the pipe coil transfer device 3, and the tray and plate members are transferred. By the device 4, the trays 7a, 7b, 7c and the iron plate 9 can be automatically assembled and transported, the labor of the worker is greatly alleviated, and the efficiency of assembling the tray assembly 5 is significantly improved. Further, the trays 7a, 7b, 7c and the iron plate 9 can be assembled and transported by the same device, the entire device can be downsized, and the device cost can be reduced. Even when the tray assembly 5 is disassembled, there are the same advantages as the above-mentioned construction. Further, the pipe coils 6a to 6f, which are required to be accurately handled, can be easily and reliably transported by the coil transfer device 3 without being damaged. In addition, the trays 7a, 7b, 7 can be easily configured.
c can be gripped and transported, and the iron plate 9 can be gripped by a simple operation of suction, so that the apparatus cost does not increase.

[0080]

Since the present invention is configured as described above, it has the following effects. According to the first aspect of the present invention, the gas containing the oil component discharged from the pipe coil can be efficiently collected. Therefore, the oil component does not adhere to the inner wall surface of the annealing furnace and is not contaminated. The number of maintenances can be reduced and the pipe coil can be annealed with high precision for a long period of time. In the invention according to claim 2, the purge gas discharged from each pipe coil and contaminated with oil can be more efficiently merged by the gas guide member of the tray and can be guided to the upper side. Contamination is further reduced. According to the invention as set forth in claim 3, the tray assembly is made up of 6 stages of pipe coils and 3 stages of trays to secure the stability of the tray assembly, and then the continuous annealing furnace is used to form 6 pipe coils at a time. Annealed, high production efficiency. The invention according to claim 4 can automatically discharge the combined contaminated purging gas to the outside of the continuous annealing furnace with a simple configuration.

[Brief description of the drawings]

FIG. 1 is a schematic plan view (schematic top view) of a pipe coil (LWC) continuous annealing facility according to the present invention.

FIG. 2 is an enlarged view of the assembly area K1 side (left half in FIG. 1) of FIG. 1, and the transfer device (assembly device) is drawn at a position off the transport path for convenience.

3 is an enlarged view of the disassembly area K2 side (right half in FIG. 1) of FIG. 1, and the transfer device (disassembly device) is drawn at a position deviated from the transport path for convenience.

FIG. 4 is a front view of a tray assembly with 6 coils and 3 trays according to the present invention, showing a state in a continuous annealing furnace.

5 is a cross-sectional view of the tray assembly and continuous annealing furnace shown in FIG.

FIG. 6A is a plan view (top view) of the lower tray of the tray assembly, and FIG.

7A is a plan view (top view) of a middle tray (or an upper tray) of the tray assembly, and FIG. 7B is a front view.

FIG. 8A is an enlarged view of the piping portion of the lower tray, and FIG.
[Fig. 3] is an enlarged view of a pipe portion of the middle tray, and (c) is an enlarged view of a pipe portion of the upper tray.

9A is a plan view of an iron plate (plate member) used in the tray assembly, and FIG. 9B is a vertical sectional view taken along line MM.

FIG. 10 is a sectional view of a coil centering robot (coil centering device) 1 according to the present invention.

11 is a plan view (top view) of FIG.

12 is a diagram of the opening / closing drive unit 52 of FIG. 10 viewed from below (direction of arrow L).

FIG. 13 is a front view of a pipe end detection device 42 according to the present invention.

FIG. 14 is a right side view of FIG.

15A is an enlarged view of the detection unit of FIGS. 13 and 14, and FIG. 15B is a view of FIG. 15A viewed from below.

16 is an enlarged view of the proximity sensor unit of FIG.

FIG. 17 is a schematic plan view of a tray and an iron plate (plate member) transfer device 4 according to the present invention.

FIG. 18 is an enlarged detailed view taken along the line QQ of FIG. 17.

19 is a diagram showing a clamped state of the standing ribs of the tray by the tray and the plate member transfer device shown in FIG.

FIG. 20 is a sectional view of the pipe coil transfer device 3 according to the present invention.

21 is a bottom view of FIG. 20. FIG.

22A is an enlarged view of a central portion of the link mechanism of FIG. 21, and FIG. 22B is an enlarged view of a mounting portion of a catching member.

FIG. 23 is a general configuration diagram of a continuous annealing facility showing a conventional technique.

FIG. 24 is a horizontal sectional view of the annealing furnace in FIG.

25 is a front view of the pipe coil on the tray in FIG. 23. FIG.

FIG. 26 is a schematic view of a continuous annealing furnace showing another conventional technique.

27 is a vertical cross-sectional view of the heating chamber of FIG.

[Explanation of symbols]

K1 Assembly area K2 Dismantling area A, B, C, D, E, F Position (position) H ₁ , H ₂ Piping 1 Coil centering device (robot) 2 LWC and board transfer device (robot) 3, 3a LWC transfer Loading device (robot) 4,4a Tray and iron plate Transfer device (robot) 5 Tray assembly 6a, 6b, 6c, 6d, 6e, 6f Pipe coil (LWC) 7a Lower tray 7b Middle tray 7c Upper tray 8 Strut 9 Iron plate (Plate member) 10, 11 Through hole (center hole) 12 Buffer member 13 First pipe 14 Second pipe 15a, 15b Gas supply hole 16a, 16b Tube 17a, 17b Tube 18a, 18b Elbow 19a, 19b Tube 20a, 20b Elbow 21 Cylindrical member (gas guide member) 22 Continuous annealing furnace 22a Cooling chamber 22b Entrance side door 2 c Outlet door 23 Gas exhaust port 24 Cylindrical member (gas guide member) 25 Tapered member (convex fixing member) 26 Receiving member (concave member) 27a, 27b Tube 28a, 28b Elbow 29a, 29b Tube 30 Assembly Carry-in / carry-out path 31 LWC Carry-in / carry-out path 32 Pallet carry-out / carry-out path 33 Tray carrier path 34 Iron plate carrier path 35 Paperboard carrier path 36 Assembly carry-in / carry-out path 37 Assembly detour carrier path 38 LWC packing carrier path 40 Incoming side Transfer device (assembling device, loading device) 41 transfer device (disassembly device) on the output side 42 pipe end detection device 43 XZ moving mechanism 44 opening / closing cylinder 44a rod 45 main body 45a upper plate 45b positioning pin 46 fixed bottom Plate 47 Support 48 Large-diameter fixed plate 49 Linear bush 50 Movable plate 51 Cam follower 52 Open / close drive unit 53 Ket 54 Opening / closing claw member 55 Lower end of opening / closing claw member 56 Proximity sensor 57 Sensor support shaft 58 Linear bush 59 Dog 60 Stopper buffer 60a Proximity sensor 61 Cylinder 61a Rod 62 Link member 63 First cylindrical shaft 64 First pin shaft 65a , 65b Fixed plate 66a First arm 66b Second arm 67 Second pin shaft 68 Second cylindrical shaft 69a, 69b Inner plate member 70a, 70b Outer plate member 71 Extension coil spring 72a, 72b Coil contact roller 73 Proximity Sensor 73a Long hole 74 Bracket 75 Tray standing rib (protruding rib) 76a, 76b Clamp member 77 Limit switch 78 Suction pad 79 YZ moving mechanism 80 First support frame 81 Clamp support 82 Tray detection member 83 Tension coil spring 84 Micro Switch 84a Contact 85 Detection Piece 86 First Bracket 87 Clamp Cylinder 87a Rod 88 First Link Member 89 Second Bracket 90 Bolt 91 Stopper Nut 92 Device Main Body 93 Second Support Frame 94 Adsorption Axis 95 Linear Bushing 96 tube 97 dog 98 micro switch 98a contact piece 99 YZ moving mechanism 200 cylinder 200a rod 201 frame member 202 cylindrical member 203a, 203b link member 204a-204d guiding member 205a, 205b guide member 206 lower support plate 207 guide shaft 208 rubber Member 210 Fixed position stop device 211 Purge gas supply pipe 212 Conveying rollers 213, 214 Horizontal shafts 215, 216 Lever 217, 218 Air cylinder 219, 220 Flaking 221,222 stopper 223 cylinder 225 rod 228, 229 plug 230 hose 600a outer tube end 600b inner tube end

Claims (4)

[Claims] 1. A tray assembly in which a plurality of trays, each having a plurality of pipe coils that can be stacked via a plate member, are vertically stacked, and a through hole is provided at the center of each tray and each plate member. A tray assembly for a continuous annealing furnace, which is characterized by being formed. 2. A tray set for a continuous annealing furnace according to claim 1, wherein one end of a tubular gas guide member that expands downward is fixed to a peripheral portion of the through hole on the lower surface of each tray. Three-dimensional. 3. The pipe assembly according to claim 1, wherein the tray assembly is a 6-pipe pipe coil / 3-tray tray assembly in which two trays each having two pipe coils stacked are stacked in three layers. A tray assembly for a continuous annealing furnace as described above. 4. Each tray of the tray assembly when the tray assembly is in a predetermined annealing position on a ceiling wall of a continuous annealing furnace for accommodating the tray assembly and annealing each pipe coil. Further, the continuous annealing furnace is characterized in that an exhaust port is formed so as to be substantially coaxial with the through hole of each plate member.