JPH11104765A - Method and device for temperature control in seamless can manufacturing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To carry out a quick and precise temperature control of a seamless can manufacturing machine so as to adjust the length of a flange within a fixed range value in the case that the seamless can with a flange part is manufactured by re-drawing a cup member. SOLUTION: In this device, the seamless can with the flange part is manufactured by re-drawing processing from the cup member comprising a metallic plate, both faces of which are coated with an organic film. In this case, after cooling water 44 passes through a first leading tube 46 between a cooling water adjusting tank 40 and a cooling water pump 47, it is supplied to leading holes through a second leading tube 48 between the cooling water pump 47 and the leading holes of the seamless can manufacturing machine. Then, it is flown back to the cooling water adjusting tank 40 through a third leading tube 52 and circulated, and the temperatures of the cooing water in the second leading tube 48 and/or the third leading tube 52 are detected. The water volume of the cold water 44' or the hot water 74' is adjusted based on the detected value.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for controlling the temperature of an apparatus for manufacturing a seamless can by redrawing from a cup made of a metal plate coated on both sides with an organic film.

[0002]

2. Description of the Related Art A cup formed from a laminated metal plate coated on both sides with a polyester film is redrawn by a transfer press using a die, a punch and a wrinkle press to produce a seamless can having a flange portion. In the case of performing the re-drawing process, the hot water flows through the dice and the wrinkle retainer, and immediately before starting the re-drawing process, the hot water is switched to the cold water to perform the re-drawing process, and the hot water and the cold water for the method. A circulation device has been proposed (Patent Publication No. 2550845). Average radial length of flange portion of seamless can (hereinafter referred to as flange length)
Is desirably within a predetermined value. This is because if the flange length is too short, the rigidity of the thin body becomes poor, and it becomes difficult to hold the body with the holding tool and to carry it. On the other hand, if the flange length is too long, the thickness variation of the body in the height direction becomes large. However, a cupping machine (for example, JP-A-7-299534)
The thickness of the laminated coil for forming the cup body by the coil is slightly different for each coil and between the lead portion and the tail portion of the coil. Causes fluctuations. In order to prevent this fluctuation and obtain a seamless can with a flange length within a predetermined range, the temperature of the cold water is adjusted during production to adjust the temperature of the die and wrinkle retainer, that is, the sliding friction between the die and the polyester film. Preferably, the resistance is adjusted. However, the above-described circulation device has a problem that the temperature of a die or the like cannot be adjusted because there is no temperature adjustment mechanism for cold water. Even if the temperature controller is installed in the cold water tank,
It is not possible to rapidly adjust the temperature of the chilled water in the chilled water tank during production. Further, during the working time, the transfer press sometimes stops due to malfunction of the cupping machine or the like. However, in the case of the above-described circulation device, warm water enters the holes of the dies and wrinkle retainers each time, and cold water flows through the holes immediately after production restarts, so that the warm water in the holes enters the cold water tank. Therefore, the temperature of the cold water in the cold water tank gradually increases.
The above-mentioned circulation device has a problem that this temperature rise cannot be stopped.

[0003]

SUMMARY OF THE INVENTION The present invention relates to a method for producing a seamless can having a flange portion by redrawing a cup body formed from a metal plate coated on both sides with an organic film. It is an object of the present invention to provide a method and an apparatus for quickly and precisely controlling the temperature of a die, a wrinkle presser and a punch of a seamless can manufacturing apparatus in order to adjust the temperature within a specified range. An object of the present invention is to provide an apparatus capable of performing stable temperature control of a die, a wrinkle presser, and a punch of a seamless can manufacturing apparatus in addition to the above objects. The present invention provides, in addition to the above objects, a temperature control device capable of rapidly and stably lowering the temperature of a die, a wrinkle presser, and a punch of a seamless can manufacturing device from a heated state to a cooled state. The purpose is to provide.

[0004]

According to the first aspect of the present invention,
The method for controlling the temperature of a seamless can manufacturing apparatus is a method of controlling the temperature of a seamless can manufacturing apparatus that forms a seamless can having a flange portion by redrawing from a cup body made of a metal plate coated on both sides with an organic coating. And passing the cooling water through a first conduit between the cooling water regulating tank and the cooling water pump, and then passing the cooling water through a second conduit between the cooling water pump and the conduit of the seamless can manufacturing apparatus. And then the third
Circulates back to the cooling water regulating tank through the conduit of (2), detects the temperature of the cooling water in the second conduit and / or the third conduit, and based on the detected value, supplies cold water or cold water supplied to the first conduit. It is characterized by adjusting the amount of hot water.

[0005] In this specification, the term "redrawing" refers to a so-called thinning redrawing in which, besides ordinary redrawing, a side wall is bent and stretched and thinned using a die having a processing corner having a small radius of curvature. Processing (see JP-A-1-258822 and JP-A-3-155419), and redrawing and ironing in which thinning and redrawing and ironing are performed in the same step (Japanese Patent Laid-Open No. 7-275961). . Cold water refers to water at a lower temperature than cooling water or warming water, and warm water refers to water at a higher temperature than cooling water or warming water. A first conduit between the cooling water conditioning tank and the cooling water pump,
Since cold or hot water is supplied, the temperature of the cooling water rapidly drops or rises, and the temperature of the seamless can manufacturing apparatus having the guide hole is quickly adjusted accordingly. Second
The temperature of the cooling water in the first conduit and the temperature of the cooling water in the third conduit are the temperatures of the cooling water before and after passing through the conduit, respectively. Since the amount of cold water or hot water to be adjusted is adjusted, precise temperature adjustment is possible.

According to a second aspect of the present invention, there is provided a temperature control apparatus for a seamless can manufacturing apparatus, wherein a seamless can having a flange portion is formed from a cup body made of a metal plate coated on both sides with an organic film by redrawing. A device for controlling the temperature of a can manufacturing device, the device comprising: a cooling water adjusting tank; a cooling water tank connected to the cooling water adjusting tank and having a much larger cross-sectional area than the cooling water adjusting tank; A hot water tank having a large cross-sectional area; a cooling water pump; a first conduit connecting the cooling water adjusting tank and the cooling water pump; a first cooling water on-off valve and a first heated water on-off valve; An upstream flip-flop on-off valve connected to the inlet side of the through hole; a downstream flip-flop on-off valve connected to the outlet side of the through-hole, comprising a second cooling water on-off valve and a second heated water on-off valve A bypass flip-flop on-off valve comprising a third cooling water on-off valve and a third heated water on-off valve; a second conduit connecting the cooling water pump to the first cooling water on-off valve and the third cooling water on-off valve The cooling water regulating tank and the second
A third conduit connecting the cooling water on / off valve and the third cooling water on / off valve; a first thermometer for detecting a temperature of the cooling water in the second conduit and / or the third conduit; 2
A temperature indicator controller to which the output of the first thermometer and / or the second thermometer is input; and a fourth connecting the chilled water tank and the first conduit, having a first proportional control valve in between. And a fifth conduit connecting the hot water tank and the first conduit having a second proportional control valve in between, the output of the temperature indicating controller being a first proportional control valve and a second proportional control valve. It is characterized by inputting to a control valve.

[0007] In this specification, a flip-flop on / off valve means that one of two on / off valves arranged in parallel is "open".
At the same time, it refers to an on-off valve of the type in which the other automatically closes or an on-off valve having an equivalent function (for example, an electromagnetic three-way valve). Although an electromagnetic on-off valve is preferably used as the on-off valve, a proportional on-off valve may be used. A first conduit for connecting the cooling water adjustment tank and the cooling water pump is provided. In addition, a second conduit for connecting the cooling water pump and the first cooling water on-off valve is provided, and the first cooling water on-off valve is connected to the inlet side of the guide hole of the seamless can manufacturing apparatus.
Further, a third conduit is provided for connecting the cooling water regulating tank and the second cooling water on-off valve, and the second cooling water on-off valve is connected to the outlet side of the guide hole. Therefore, the first cooling water on-off valve and the second
By opening the cooling water on / off valve of "
After passing through a first conduit between the cooling water regulating tank and the cooling water pump, the cooling water is supplied to the conduit through a second conduit between the cooling water pump and the conduit of the seamless can manufacturing apparatus, and then supplied to the third conduit. And returned to the cooling water adjustment tank for circulation.
The output of the first thermometer and / or the second thermometer for detecting the temperature of the cooling water in the second conduit and the third conduit, and the output of the first thermometer and / or the second thermometer are input. A temperature indicating controller, a fourth conduit connecting the cold water tank and the first conduit, having a first proportional control valve in between, and a hot water tank and a first conduit having a second proportional control valve in between. And a fifth conduit for connecting the output of the temperature indicating controller to the first proportional control valve and the second proportional control valve. Accordingly, the temperature of the cooling water in the second conduit and / or the third conduit can be detected, and the amount of cold water or hot water supplied to the first conduit can be adjusted based on the detected value. The temperature of the cooling water circulated by supplying the cold water or the hot water is equalized in the cooling water adjusting tank. Therefore, the invention according to claim 1 can be implemented, and quick and precise temperature control of the seamless can manufacturing apparatus can be performed.

A cooling water tank connected to the cooling water adjustment tank and having a cross section much larger than the cooling water adjustment tank, and a hot water tank having a cross section much larger than the cooling water adjustment tank are provided. When raising the temperature of the seamless can manufacturing apparatus, the hot water flows from the hot water tank into the first conduit, so that the amount of circulating water increases and the water level in the cooling water adjustment tank temporarily rises. However, since the cold water tank having a much larger cross-sectional area than the cooling water adjusting tank is connected to the cooling water adjusting tank, the rising amount of cooling water flows into the cold water tank, and the water surface returns to the original level.
Therefore, there is no possibility that the cooling water adjusting tank overflows.
When the production is stopped or temporarily stopped, the first cooling water on-off valve and the second cooling water on-off valve are closed.
The warming water on-off valve and the second warming water on-off valve automatically open, and the warming water flows through the guide hole. Then, the cooling water circulates through the "open" third cooling water on-off valve, so that the level of the water surface of the cooling water adjustment tank temporarily drops. However, since a cold water tank with a much larger cross-sectional area than the cooling water adjustment tank is connected to the cooling water adjustment tank, the cooling water that has descended is replenished by flowing cold water from the cold water tank, and the water level returns to the original level. Return. Therefore, there is no risk of failure due to idling of the cooling water pump and air entrainment. Therefore, stable temperature adjustment is possible.

The temperature control device for a seamless can manufacturing apparatus according to the third aspect of the present invention, in addition to the invention according to the second aspect, further comprises a heated water adjusting tank having a cross section much smaller than that of the hot water tank; a heated water pump; A sixth conduit connecting the regulating tank and the warming water pump; a seventh conduit connecting the warming water pump, the first warming water on-off valve and the third warming water on-off valve; a warming water regulating tank and the second heating An eighth conduit connecting the hot water on-off valve and the third heated water on-off valve; a seventh conduit and / or an eighth conduit
A third thermometer and / or a fourth thermometer for detecting the temperature of the heated water in the conduit of the third thermometer; a temperature indicator controller to which the output of the third thermometer and / or the fourth thermometer is input; A ninth conduit connecting the cold water tank to the sixth conduit having a third proportional control valve, and a tenth conduit connecting the hot water tank and the sixth conduit having a fourth proportional control valve in between. And the flip-flop on / off valve for bypass is provided near the seamless can manufacturing apparatus.

Before operation, the first heated water on-off valve and the second heated water on-off valve are set to “open”, and the third heated water on-off valve is closed.
By doing so, the heated water can flow through the guide hole to heat the seamless can manufacturing apparatus. Further, since the bypass flip-flop on / off valve is disposed near the seamless can manufacturing apparatus, the cooling water bypasses the third cooling water on / off valve to circulate near the seamless can manufacturing apparatus. Immediately before the start of production, the first heated water on-off valve and the second heated water on-off valve are closed and the third heated water on-off valve is opened to close the seamless can manufacturing apparatus. The flowing cooling water immediately passes through the holes. The fluctuation of the water level of the cooling water adjustment tank and the heating water adjustment tank at that time is indicated by paragraph number 0.
Absorbed as described in 008. Therefore, the temperatures of the die, the wrinkle presser and the punch of the seamless can manufacturing device can be rapidly and stably reduced from the heated state to the cooled state.

According to a fourth aspect of the present invention, an apparatus for manufacturing a seamless can includes a primary re-drawing device and a secondary re-drawing device, wherein the primary re-drawing device comprises a first cooling water adjustment tank and a first re-drawing device.
3. The seamless can according to claim 2, wherein the first cooling water is supplied from the cold water tank, and the secondary re-drawing device is supplied with the second cooling water from the second cooling water adjusting tank and the second cold water tank. It is a temperature controller for a manufacturing apparatus. By changing the temperature of the first cooling water and the temperature of the second cooling water, the temperatures of the primary re-drawing device and the secondary re-drawing device can be individually adjusted to a preferable temperature during the production.

According to a fifth aspect of the present invention, there is provided the temperature control apparatus for a seamless can manufacturing apparatus according to the fourth aspect, wherein a plurality of seamless can manufacturing apparatuses are provided. The productivity is high because a plurality of seamless can manufacturing devices are provided. In the case of a plurality of units, the vertical fluctuation of the water surface of the cooling water adjustment tank at the time of production stop or the like is larger than that of the case of one unit.
As described in 8, this variation can be quickly absorbed.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a transfer press 1 is provided with a plurality of rows (five rows in FIG. 1) of a primary redrawing device 4, a secondary redrawing device 5, and a doming device 6 in parallel. The right side of the figure is the front.
It was formed by punching a blank (not shown) from a coil (not shown) coated with an organic resin film 201 (see FIG. 6) on both sides of a thin metal plate 200 by a cupping machine (not shown) and simultaneously drawing. The cup bodies 165 (see FIG. 2) are supplied to the transfer press 1 one after another. The cup body 165 is
The primary redrawing device 4 forms a primary redrawing formed body 166 having a flange portion. Immediately after the first redrawing compact 166
Is moved in the direction of arrow A and is formed by the secondary redrawing device 5 on the secondary redrawing formed body 167 (see FIG. 5) having the flange portion 167a. Immediately thereafter, the secondary redrawn molded product 1
67 is moved in the direction of arrow A and the bottom is domed by the doming device 6 to form an annular projection 168b and a chime 168c on the bottom. Thus, the seamless can 168 having the flange portion 168a is formed (see FIG. 2). The reason for leaving the flange in each process is
It helps to prevent the organic coating from peeling off at the open end.

FIG. 2 shows that the lower die shoe 2 of the die set of the transfer press 1 has a top dead center and the upper die shoe 3
Indicates a state in which the re-drawing and the doming are completed after reaching the bottom dead center. The lower die shoe 2 includes a die stand 7 and a die 8 of the primary redrawing device 4 and a holding ring 9 of the inserted cup body 165, a die stand 17 of the secondary redrawing device 5, a die 18 and a primary redrawing molded body. 166 retaining rings 19 are mounted. As shown in FIG. 5, a center die 32a of the doming die 32 of the doming device 6 is fixed to the lower die shoe 2, and a ring die 32b, a hold-down ring die 28 of the doming die 32, and a holder 29 thereof are respectively provided. , So as to be pressed upward by hydraulic mechanisms 35 and 36.

The upper die shoe 3 has a primary re-drawing device 4
, The punch 20 of the secondary re-drawing device 5 and the punch 30 of the doming device 6 are fixed. Further, a wrinkle presser 11 of the primary re-drawing device 4 and a wrinkle presser 21 of the secondary re-drawing device 5 are mounted so as to press downward by a pneumatic mechanism. Reference numerals 12 and 22 denote knockout tools for pushing up and removing the primary redrawing molded body 166 and the secondary redrawing molding 167 from the dies 8 and 18, respectively.

As shown in FIG. 3, an inlet-side vertical hole 13 through which a cooling water 44 or a warming water 74 described later passes through the die table 7 and the die 8 of the primary re-drawing device 4 while rising.
a and an annular hole 13 formed in cooperation with the retaining ring 9
A conductive hole 13 having a hole b is provided. The die 8 includes a wrinkle holding surface 8a and a processing corner 8b (see FIG. 6). The radius of curvature of the processing corner 8b is (1-2.9) ×
Since it is within the range of t (t = thickness of blank), so-called thinning redrawing is performed. After one round circular guide hole 13b is substantially at its inlet portion 13b ₁ near the inlet side vertical hole 1
It is connected to an outlet side vertical hole (not shown) extending parallel to 3a. A thermocouple 26 for monitoring the temperature of the die 8 is attached to the holding ring 9. The thermocouple 26 can detect clogging of the heating water 74 or the cooling water 44 or an abnormality in the piping.

The punch 10 comprises a sleeve 10a, a core 1
0b, the sleeve 10a, and the holding cylinder 10 of the core 10b.
c. The punch 10 is provided with an inlet-side vertical hole 14a through which the warming water 74 or the cooling water 44 passes while descending, and a conducting hole 14 having a spiral multistage annular hole 14b formed by cooperation of the sleeve 10a and the core portion 10b. Have been. Exit 1 of spiral annular hole 14b
4b ₁ is connected to the outlet side vertical hole extending in parallel to the inlet side vertical hole 14a (not shown).

The wrinkle retainer 11 is also provided with an annular guide hole 15 through which the warming water 74 or the cooling water 44 flows. After approximately one round of the guide hole 15, it is connected to an outlet side conduit (not shown) near the inlet portion 15 a. The inlets and outlets of the guide holes 13, 14 and 15 are respectively connected to corresponding ones of an inlet-side manifold 65 and an outlet-side manifold 66 (see FIG. 7) described later.

As shown in FIG. 4, the dice table 17 and the dice 18 of the secondary re-drawing device 5 have an inlet-side vertical hole 23a through which warming water 74 or cooling water 104, which will be described later, passes while rising, and a holding ring. A guide hole 23 having an annular hole 23b formed in cooperation with the hole 19 is provided. Annular hole 2
After 3b is the almost round at its inlet portion 23b ₁ near to connect to the outlet side vertical hole extending in parallel to the inlet side vertical hole 23a (not shown). The die 18 also has the same structure as the die 8, and the secondary redrawing device 5 can perform thinning redrawing. As in the case of the holding ring 9, a thermocouple (not shown) is also attached to the holding ring 19.

The punch 20 of the secondary re-drawing device 5 includes a sleeve 20a, a core 20b, and a holding cylinder 20c for the sleeve 20a and the core 20b. The punch 20 has
The inlet side vertical hole 24a through which the warming water 74 or the cooling water 104 passes while descending, and the sleeve 20a and the core 20
spiral multistage annular hole 24 formed by the cooperation of b
A conductive hole 24 having a hole b is provided. Outlet portion 24b ₁ of the spiral annular hole 24b is connected to the outlet side vertical hole extending in parallel to the inlet side vertical hole 24a (not shown).

The wrinkle retainer 21 is also provided with an annular guide hole 25 through which the warming water 74 or the cooling water 104 flows.
After approximately one round of the guide hole 25, it is connected to an outlet side conduit (not shown) in the vicinity of the inlet portion 25a. Guide holes 23, 24
And 25 are respectively connected to corresponding ones of the inlet manifolds 125 and outlet manifolds 126 (see FIG. 8) described below.

As shown in FIG. 5, the doming device 6 is also provided with an annular guide hole 33 formed in cooperation with the hold-down ring die 28 and the holder 29 and through which the warming water 74 or the cooling water 134 flows. ing. After the guide hole 33 has made one round, it is connected to an outlet-side vertical hole (not shown) extending downward near the inlet portion 33a.

The punch 30 of the doming device 6 has an inlet-side vertical hole 34 between the sleeve portion 30a and the core portion 30b, through which the heating water 74 or the cooling water 134 passes while descending.
a, and a guide hole 34 having the same structure as the guide hole 24 of the secondary redrawing device 5 having a spiral multistage annular hole 34b formed between the sleeve 30a and the core portion 30b. The inlets and outlets of the guide holes 33 and 34 are respectively connected to an inlet-side manifold 155 and an outlet-side manifold 1 described later.
56 (see FIG. 8). The reason why the hold-down ring 28 and the punch 30 of the doming device 6 are cooled is to prevent wrinkles from occurring in the chime portion 168c.

In FIG. 7, reference numeral 40 denotes a cooling water adjusting tank whose cross-sectional area is uniform in the height direction, and reference numeral 41 denotes a cold water tank whose cross-sectional area is uniform in the height direction. The cold water tank 41 has a significantly larger cross-sectional area (for example, about 1
0 to 30 times), and even if the cooling water 44 and the cooling water 44 ′ flow into and out of the cooling water regulating tank 40, the level of the water surface 44 ′ a of the cooling water 44 ′ is substantially It does not change dynamically. The heights of both 40 and 41 are almost the same. The cold water 44 'in the cold water tank 41 is lower than the temperature of the circulating cooling water 44 by the heat exchanger (not shown), that is, lower than the below-mentioned set temperature T1 and lower than the below-mentioned set temperature T4 of the heated water 74. It is kept at a predetermined temperature, for example, 26 ° C. The cooling water adjustment tank 40 and the cold water tank 41 are installed on a common horizontal floor surface 42. The cooling water adjustment tank 40 and the cold water tank 41 communicate with each other by a pipe 43 at the level of the height H. As soon as the water surface 44 a of the cooling water adjustment tank 40 rises and falls, the cooling water 44 or the cold water 44 ′ connects the pipe 43. And flows between the two. During non-production and during stable production, the levels of the water surface 44a of the cooling water 44 and the water surface 44'a of the cooling water 44 'are at the position of the height H (the inner top 43a of the pipe 43). The upper part of the cold water tank 41 is open and the cooling water adjusting tank 40 is open.
Is covered with an end plate 40a, and an air conducting pipe 45 extends from a hole (not shown) in the end plate 40a to an upper space of the cold water tank 41. The air conducting pipe 45 is
Acts as an overflow pipe in case of an emergency. From the wall near the bottom of the cooling water adjusting tank 40 lower than the height H, the conduit 4
6 extends to a suction port 47 a of the cooling water pump 47.

Reference numeral 49 denotes an upstream flip-flop on-off valve comprising a cooling water electromagnetic on-off valve 49a and a heated water electromagnetic on-off valve 49b arranged in parallel. Reference numeral 50 denotes a downstream flip-flop on-off valve including a cooling water electromagnetic on-off valve 50a and a heating water electromagnetic on-off valve 50b arranged in parallel. Five primary redrawing devices 4 of transfer press 1
A flip-flop on-off valve 49 is provided on the upstream side of each of the guide holes 13, 14 and 15, and a downstream-side flip-flop on / off valve 50 is provided on the outlet side via an inlet-side manifold 65 and an outlet-side manifold 66, respectively. Connected. Reference numeral 51 denotes a bypass flip-flop on-off valve including a cooling water electromagnetic on-off valve 51a and a heated water electromagnetic on-off valve 51b. The vicinity of the inlet of the cooling water solenoid on-off valve 49a and the cooling water solenoid on-off valve 50
The cooling water bypass electromagnetic on-off valve 51a is connected to the vicinity of the outlet portion of a. A heated water bypass electromagnetic on-off valve 51b is connected near the inlet of the heated water electromagnetic on-off valve 49b and near the outlet of the heated water electromagnetic on-off valve 50b. The upstream flip-flop on-off valve 49, the downstream flip-flop on-off valve 50, and the bypass flip-flop on-off valve 51 are arranged close to the transfer press 1.

A conduit 48 connects the discharge port 47b of the cooling water pump 47 and the upstream side cooling water solenoid on-off valve 49a.
A conduit 52 connects the downstream side cooling water electromagnetic on-off valve 50a to the relatively high wall of the cooling water adjustment tank 40 which is normally a space. A pressure regulating valve 54 is provided between the conduit 48 and the conduit 52 near the transfer press 1. The pressure regulating valve 54 is operated on the cooling water pump 47 side by an electric signal from a pressure sensor 53 attached to the conduit 48, and regulates the pressure between the conduit 48 and the conduit 52 to a predetermined value P1.

In a conduit 48 relatively close to the cooling water pump 47, a thermocouple thermometer 55 and a dial display pressure gauge 5 are provided.
6 is installed. A thermocouple type thermometer 57 and a dial display type pressure gauge 58 are attached to the conduit 52 relatively near the cooling water adjusting tank 40. Pressure gauge 56 and pressure gauge 5
8 are conduits 48 and 5 due to internal contamination and the like, respectively.
This is for checking the change over time of the pressure of No. 2.
The outputs of the thermometer 55 and the thermometer 57 are input to a temperature indicating controller 60. The temperature indicating controller 60 has a predetermined temperature T
1, for example, 34 ° C. is set as the target value. A conduit 61 with a proportional control valve 62 in the middle is
A cooling water supply pipe 46 and a cooling water supply conduit 46 are connected. In addition, a conduit 63 provided with a proportional control valve 64 in the middle connects a conduit 93 for supplying hot water 74 ′ for guiding hot water 74 ′ in a hot water tank 71 described later and the conduit 46. The output signal of the temperature indicating controller 60 is input to the proportional control valve 62 and the proportional control valve 64 to control the opening degrees of the valves 62 and 64.

Reference numeral 70 denotes a heated water adjusting tank whose cross-sectional area is uniform in the height direction. Reference numeral 71 denotes a hot water tank whose cross-sectional area is uniform in the height direction. The warm water tank 71 has a remarkably large cross-sectional area (for example, about 10 to 30 times) as compared with the warm water regulating tank 70, and flows the warm water 74 and the warm water 74 ′ between the warm water regulating tank 70 and the warm water regulating tank 70. Even if there is a spill, warm water 7 in it
The level of the 4 'water surface 74'a is not substantially changed. The heights of both 70 and 71 are almost the same. The hot water 74 ′ in the hot water tank 71 is maintained at a temperature higher than the temperature of the heated water 74 circulated by an electric heater (not shown), that is, a predetermined temperature higher than T4 described later, for example, 65 ° C. The warming water adjusting tank 70 and the warm water tank 71 are installed on a common horizontal floor 42.
Therefore, the levels of the bottom surfaces of the heated water adjusting tank 70 and the hot water tank 71 are the same as the levels of the bottom surfaces of the cooling water adjusting tank 40 and the cold water tank 41. The heating water adjusting tank 70 and the hot water tank 71 are provided with a pipe 73 at the level of the height H.
(The inner diameter is, for example, about 20 mm), and the warming water 74 flows between the two through the pipe 73. When production is not being performed and during stable production, the water surface 74a of the heated water 74 and the water surface 74'a
The level is the height H (the inner top 73a of the pipe 73).
It is in. The upper part of the warm water tank 71 is open, the upper part of the heated water adjusting tank 70 is covered with an end plate 70a, and an air conducting pipe 75 is formed through a hole (not shown) of the end plate 70a.
Extends into the upper space of the hot water tank 71. The air conducting pipe 75 functions as an overflow pipe in case of an emergency. A conduit 76 extends to a suction port 77 a of a cooling water pump 77 from a wall lower than the height H near the bottom of the heating water adjusting tank 70.

The conduit 78 is connected to the outlet 7 of the heating water pump 77.
7b and the upstream-side heated water electromagnetic on-off valve 49b are connected.
A conduit 82 connects the downstream side warmed water electromagnetic on-off valve 50b and a relatively high wall portion of the warmed water regulating tank 70 which is always in contact with the space. In the vicinity of the transfer press 1, a pressure regulating valve 84 is provided between the conduit 78 and the conduit 82. The pressure regulating valve 84 is operated by an electric signal from a pressure sensor 83 attached to the conduit 78 on the side of the heated water pump 77, and regulates the pressure between the conduit 78 and the conduit 82 to a predetermined value P2.

A thermocouple-type thermometer 85 and a dial display-type pressure gauge 8 are provided relatively close to the heating water pump 77 in the conduit 78.
6 are provided. A thermocouple-type thermometer 87 and a dial display-type pressure gauge 88 are disposed relatively near the heated water adjusting tank 70 in the conduit 82. The pressure gauge 86 and the pressure gauge 88 are for checking a temporal change of the pressure of the conduit 78 and the conduit 82 due to internal contamination or the like. The outputs of the thermometers 85 and 87 are input to a temperature indicating controller 90. In the temperature indicating controller 90, a predetermined temperature T4, for example, 60 ° C. is set as a target value.
A chilled water supply conduit 91 provided with a proportional control valve 92 in the middle,
The cold water 44 ′ in the cold water tank 41 is connected to the conduit 76. A hot water supply conduit 9 provided with a proportional control valve 94 in the middle
3 connects the hot water 74 ′ in the hot water tank 71 to the conduit 76. An output signal of the temperature indicating controller 90 is input to a proportional control valve 92 and a proportional control valve 94, and the valves 92, 94
Control the opening degree.

In FIG. 8, reference numeral 100 denotes a cooling water adjusting tank.
101 is a cold water tank. The cold water tank 101 has a significantly larger cross-sectional area (for example, about 10 to 30 times) than the cooling water adjustment tank 101. The heights of both 100 and 101 are almost the same. Cold water 104 'in the cold water tank 101
Is lower than the temperature of the cooling water 104 circulated by a heat exchanger (not shown), that is, lower than T2 described below.
And a predetermined temperature lower than the temperature T4, for example, 35 ° C.
Is kept. Cooling water adjusting tank 100 and cold water tank 10
1 is installed on a common horizontal floor surface 42. Therefore, the levels of the bottom surfaces of the cooling water adjustment tank 100 and the cold water tank 101 are the same as those of the bottom surfaces of the cooling water adjustment tank 40 and the cold water tank 41. The cooling water adjusting tank 100 and the cold water tank 101 are provided with a pipe 10 at a height H level.
3 and the cooling water 104 is
It flows between the two. During non-production and during stable production, the level of the water surface 104'a of the cold water 104 'is at the position of the height H (the inner top 103a of the pipe 103), and the level of the water surface 44'a of the cold water 44' is Equal to level. The upper part of the cold water tank 101 is open, the upper part of the cooling water adjusting tank 100 is covered with an end plate 100a, and an air conducting pipe 105 is formed from a hole (not shown) of the end plate 100a to an upper space of the cold water tank 101. Extends to. A conduit 106 extends from a wall lower than the height H near the bottom of the cooling water adjustment tank 100 to a suction port 107 a of a cooling water pump 107.

Reference numeral 109 denotes an upstream flip-flop on-off valve comprising a cooling water electromagnetic on-off valve 109a and a heated water electromagnetic on-off valve 109b arranged in parallel. Reference numeral 110 denotes a downstream flip-flop on-off valve comprising a cooling water electromagnetic on-off valve 110a and a heating water electromagnetic on-off valve 110b arranged in parallel. In the five secondary redraw devices 5 of the transfer press 1, a flip-flop on-off valve 109 is provided on the inlet side of each of the guide holes 23, 24 and 25, and a flip-flop on-off valve 110 is provided on the outlet side. Tube 12
5 and the outlet manifold 126. 1
Reference numeral 11 denotes a bypass flip-flop on / off valve including a cooling water electromagnetic on / off valve 111a and a heated water electromagnetic on / off valve 111b. The cooling water electromagnetic on-off valve 111a is connected near the inlet of the cooling water electromagnetic on-off valve 109a and near the outlet of the cooling water electromagnetic on-off valve 110a. Heated water solenoid on-off valve 109
The heated water electromagnetic on-off valve 111b is connected near the inlet of b and near the outlet of the heated water electromagnetic on-off valve 110b. The flip-flop on-off valve 111 is connected to the transfer press 1
It is arranged close to.

A conduit 108 connects the discharge port 107b of the cooling water pump 107 and the cooling water solenoid on-off valve 109a.
A conduit 112 connects the downstream cooling water solenoid on-off valve 110 a to a relatively high wall of the cooling water adjustment tank 100. In the vicinity of the transfer press 1, a conduit 108;
A pressure regulating valve 114 is provided between the conduits 112.
The pressure regulating valve 114 operates on the cooling water pump 107 side by an electric signal from a pressure sensor 113 attached to the conduit 108.

A thermocouple-type thermometer 115 and a dial-type pressure gauge 116 are mounted on the conduit 108 relatively near the cooling water pump 107. A thermocouple type thermometer 117 and a dial display type pressure gauge 118 are mounted on the conduit 112 relatively near the cooling water adjusting tank 100. Pressure gauge 1
The pressure gauge 16 and the pressure gauge 118 are for checking the pressure change of the conduit 108 and the conduit 112 with time due to internal contamination or the like. Thermometer 115 and thermometer 1
The output of 17 is input to the temperature indicating controller 120. In the temperature indicating controller 120, a predetermined temperature T2, for example, 39 ° C. is set as a target value. Intermediate proportional control valve 122
Is connected to the cold water 10 in the cold water tank 101.
4 ′ and the conduit 106 are connected. A conduit 123 provided with a proportional control valve 124 in the middle connects the conduit 93 and the conduit 106 for leading the hot water 74 ′ in the hot water tank 71. The output signal of the temperature indicating controller 120 is input to the proportional control valve 122 and the proportional control valve 124 to control the opening of these valves.

Further, in FIG. 8, 130 is a cooling water adjusting tank, and 131 is a cold water tank. Cold water tank 131
Has a much larger cross-sectional area (for example, about 10 to 30 times) than the cooling water adjustment tank 131. Both 130, 1
The height of 31 is almost the same. The chilled water 134 'in the chilled water tank 131 is lower than the temperature of the chilled water 134 circulated by a heat exchanger (not shown), that is, T3 described later.
A predetermined temperature which is lower and lower than the temperature T4, for example 3
Keep at 5 ° C. The cooling water adjustment tank 130 and the cold water tank 131 are installed on a common horizontal floor surface 42.
Therefore, the levels of the bottom surfaces of the cooling water adjustment tank 130 and the cold water tank 131 are equal to the cooling water adjustment tank 40 and the cold water tank 41.
It is the same as that of the bottom. The cooling water adjustment tank 130 and the cold water tank 131 communicate with each other by a pipe 133 at the level of the height H, and the cooling water 134 and the cold water 13
4 'flows between the two through the pipe 133. Normally, the levels of the water surface 134a of the cooling water 134 and the water surface 134'a of the cooling water 134 'are at the position of the height H (the inner top 133a of the pipe 133). The upper part of the cold water tank 131 is open, the upper part of the cooling water adjusting tank 130 is covered with an end plate 130a, and an air conducting pipe 135 is formed from a hole (not shown) of the end plate 130a to an upper space of the cold water tank 131. Extends to. Cooling water adjustment tank 13
A conduit 136 extends from a wall lower than the height H near the bottom of 0 to a suction port 137 a of the cooling water pump 137.

Reference numeral 139 denotes an upstream flip-flop on-off valve comprising a cooling water electromagnetic on-off valve 139a and a heating water electromagnetic on-off valve 139b disposed in parallel. Reference numeral 140 denotes a downstream flip-flop on-off valve including a cooling water electromagnetic on-off valve 140a and a heating water electromagnetic on-off valve 140b arranged in parallel. In the five doming devices 6 of the transfer press 1, the flip-flop on-off valve 139 is provided on the inlet side of each of the guide holes 33 and 34, and the flip-flop on-off valve 140 is provided on the outlet side. They are connected via a manifold 156. 141
Is a bypass flip-flop on / off valve comprising a cooling water electromagnetic on / off valve 141a and a heated water electromagnetic on / off valve 141b. The cooling water electromagnetic on-off valve 141a is connected near the inlet of the cooling water electromagnetic on-off valve 139a and near the outlet of the cooling water electromagnetic on-off valve 140a. In addition, heated water solenoid on-off valve 139
The heated water electromagnetic on-off valve 141b is connected near the inlet of b and near the outlet of the heated water electromagnetic on-off valve 140b. The flip-flop on-off valve 141 is connected to the transfer press 1
It is arranged close to.

A conduit 138 connects the discharge port 137b of the cooling water pump 137 and the cooling water solenoid on-off valve 139a. The conduit 142 is provided with the downstream side cooling water solenoid on-off valve 140a.
And the relatively high wall of the cooling water adjustment tank 130. In the vicinity of transfer press 1, conduit 138
A pressure regulating valve 144 is disposed between the pressure control valve 142 and the conduit 142. The pressure regulating valve 144 operates on the cooling water pump 137 side by an electric signal from a pressure sensor 143 attached to the conduit 138.

A thermocouple type thermometer 145 and a dial display type pressure gauge 146 are mounted relatively near the cooling water pump 137 in the conduit 138. A thermocouple type thermometer 147 and a dial display type pressure gauge 148 are mounted relatively near the cooling water adjustment tank 130 of the conduit 142. Pressure gauge 1
The pressure gauge 46 and the pressure gauge 148 are used to check the temporal change of the pressure in the conduit 138 and the conduit 142 due to internal contamination or the like. Thermometer 145 and thermometer 1
The output of 47 is input to the temperature indicating controller 150. A predetermined temperature T3, for example, 40 ° C., is set as a target value in the temperature indicating controller 150. Intermediate proportional control valve 152
Is installed in the cold water tank 131.
4 ′ is connected to the conduit 136. A conduit 153 provided with a proportional control valve 154 in the middle connects the conduit 93 and the conduit 136 that guide the hot water 74 ′ in the hot water tank 71. The output signal of the temperature indicating controller 150 is input to the proportional control valve 152 and the proportional control valve 154 to control the opening of the valves 152 and 154.

A conduit 78 connected to the warming water adjusting tank 70 via a warming water pump 77 is provided with an upstream warming water solenoid on-off valve 1.
09b, 139b and warming water solenoid on-off valve 1 for bypass
11b and 141b. In addition, the downstream-side heated water electromagnetic on-off valves 110b and 140b and the bypassed heated-water electromagnetic on-off valves 111b and 141b are connected to the heated water adjustment tank 70 via the conduit 82. Otherwise, the structure and function of the temperature control device shown in FIG. 8 are the same as the structure and function of the temperature control device shown in FIG.

FIG. 9 shows, in addition to the transfer press 1,
The piping diagram in the case where the similar transfer press 1 'and the transfer press 1 "are provided. Similarly to the case of the transfer press 1, the cooling water or the heating water is supplied to the cooling water adjusting tank 40 or the heating water adjusting tank 70. Through the upstream-side flip-flop on / off valve 49 and the inlet-side manifold 65, and each primary re-throttling device 4 of the transfer press 1 '
After passing through each of the guide holes, the water passes through the outlet-side manifold 66 and the downstream-side flip-flop on / off valve 50, and returns to the cooling water adjusting tank 40 or the heated water adjusting tank 70 to circulate. The cooling water or the heating water is also supplied to the cooling water adjustment tank 100 or the heating water adjustment tank 70.
After passing through the upstream flip-flop on / off valve 109 and the inlet-side manifold 125 to flow through each guide hole of each secondary re-throttling device 5 of the transfer press 1 ′, the outlet-side manifold 126,
The water returns to the cooling water adjusting tank 100 or the heated water adjusting tank 70 through the downstream flip-flop on-off valve 110 and circulates.
Further, cooling water or warming water flows from the cooling water regulating tank 130 or the warming water regulating tank 70 through the upstream flip-flop on / off valve 139 and the inlet manifold 155 to the respective guide holes of each doming device 6 of the transfer press 1 ′. After flowing, the outlet manifold 156, the downstream flip-flop on / off valve 14
0 through the cooling water adjusting tank 130 or the heating water adjusting tank 70
Circulate back to. Also in the case of the transfer press 1 ", the cooling water or the warming water circulates in the same manner as described above.
Although illustration is omitted, the bypass flip-flop on-off valve and the like are arranged in the vicinity of the transfer presses 1 'and 1 "as in the case of the transfer press 1.

Next, the operation of the above-described temperature control device such as the dies, wrinkle holders and punches of the transfer press 1 will be described. Before the operation of the transfer press 1, the heated water electromagnetic on-off valves 49b, 50b, 109b, 110b,
139b and 140b are set to “open”, and the heated water electromagnetic on-off valves 51b, 111b and 141b are set to “closed”. At the same time, cooling water solenoid on-off valves 49a, 50a, 109a, 11
0a, 139a and 140a are "closed", and the cooling water on-off valves 51a, 111a and 141a are "open". In this state, the cooling water pumps 47, 107 and 13
7, and the heating water pump 77 is started. Then, after the heated water 74 passes from the heated water adjusting tank 70 through the conduit 76, the heated water pump 77 and the conduit 78, the heated water electromagnetic on-off valve 49
b, branch pipe 65, guide holes 13, 14 of primary redrawing device 4,
15, branch pipe 66, heated water electromagnetic on-off valve 50b, heated water electromagnetic on-off valve 109b, branch pipe 125, guide holes 23, 24, 25 of secondary re-throttling device 5, branch pipe 126, heated water electromagnetic on-off valve 110b , And a heated water solenoid on-off valve 139
b, branch pipe 155, guide holes 33, 3 of doming device 6
4. Return to the heated water adjusting tank 70 from the conduit 82 via the branch pipe 156 and the heated water electromagnetic on-off valve 140b and circulate. During this time, the cooling water 44 circulates from the cooling water adjusting tank 40 to the cooling water adjusting tank 40 through the conduit 46, the cooling water pump 47, the conduit 48, the bypass electromagnetic on-off valve 51a and the conduit 52, and circulates. Become. Similarly, the cooling water 104 is supplied from the cooling water regulating tank 100 to the conduit 106, the cooling water pump 107, the conduit 108, the bypass electromagnetic on-off valve 111a, and the conduit 1
The cooling water is then returned to the cooling water adjusting tank 100 through 12 and circulated, and the water temperature becomes T2. Similarly, the cooling water 134 is supplied from the cooling water adjusting tank 130 to the conduit 136, the cooling water pump 137, the conduit 138, the bypass solenoid on-off valve 141 a and the conduit 14.
2 and circulates back to the cooling water adjusting tank 130, and the water temperature becomes T3.

Immediately before the start of production, that is, immediately before the start of redrawing, the heated water electromagnetic on-off valves 49b, 50b, 109b,
110b, 139b and 140b are "closed", and the warm water solenoid valves 51b, 111b and 141b are "open".
And At the same time, cooling water solenoid on-off valves 49a, 50a, 10
9a, 110a, 139a and 140a are "open" and the cooling water solenoid on-off valves 51b, 111b and 141b
Becomes "closed". Therefore, the cooling water 44 having the temperature T1 is supplied from the cooling water regulating tank 40 to the conduit 46, the cooling water pump 47, the conduit 48, the cooling water electromagnetic on-off valve 49a, the branch pipe 65, the guide holes 13, 14 of the primary re-throttling device 4, 15, circulates through the branch pipe 66, the cooling water solenoid on-off valve 50a, and the conduit 52 to return to the cooling water adjustment tank 40. Similarly, cooling water 10 having a temperature of T2
4 is a pipe 106, a cooling water pump 107, a pipe 108, a cooling water solenoid on-off valve 109a, a branch pipe 125, and guide holes 23, 24, 2
5, circulates back to the cooling water adjusting tank 100 through the branch pipe 126, the cooling water electromagnetic on-off valve 110a, and the conduit 112. Similarly, the cooling water 134 having the temperature T3 is supplied from the cooling water regulating tank 130 to the conduit 136, the cooling water pump 137, the conduit 138, the electromagnetic switching valve 139a, the branch pipe 155,
The cooling water is returned to the cooling water adjusting tank 130 through the guide holes 33 and 34 of the doming device 6, the branch pipe 156, the cooling water electromagnetic on-off valve 140a, and the conduit 142 to circulate. During this time, heated water 74
Is connected to the heating water adjusting tank 70 through the conduit 76 and the heating water pump 7.
7, through the conduit 78, the bypass solenoid on-off valve 51b,
The air returns to the heated water adjustment tank 70 through the bypass electromagnetic on-off valve 111b, the bypass electromagnetic on-off valve 141b, and the conduit 82 to circulate.

During the redrawing, the temperature of each punch, die, etc. rises due to processing heat, frictional heat, etc., and the temperature of the cooling water 44, 104, 134 gradually rises accordingly. When this temperature exceeds a predetermined value, for example, when the temperature of the cooling water 44 exceeds the set value T1 and becomes T1 ', the thermometer 5
5 or 57 senses this and outputs an electrical signal corresponding to temperature T1 'to temperature indicating controller 60. The temperature indicating controller 60 determines (T1'-T
The proportional control valve 62 is opened at an opening proportional to the value of 1), and the chilled water 44 'of the chilled water tank 41 is passed through the conduit 61 to the conduit 46.
And the temperature of the circulating cooling water 44 is set to the set temperature T1. During stable production, that is, when T1 '= T1, the proportional control valve 62 is closed. Therefore, the amount of the circulating cooling water 44 increases, so that the water surface 44a of the cooling water adjusting tank 40 temporarily rises, for example, as indicated by a one-dot chain line 44a. However, immediately after passing through the pipe 43, the cooling water 44 in the cooling water adjustment tank 40 flows into the cooling water tank 41, so that the overflow of the cooling water 44 in the cooling water adjustment tank 40 is prevented, and the water surface 4
4a returns to the original level shown by the solid line. For example, cooling water 44
In order to raise the temperature from T1 to T1 ", the set temperature of the temperature indicating controller 60 is set to T1". Then, the temperature indicating controller 60 opens the proportional control valve 64 with an opening proportional to the value of (T1 "-T1), and connects the hot water 74 'of the hot water tank 71 to the conduit 9.
3, 63 is supplied to the conduit 46 to bring the circulating cooling water 44 to the set temperature T1 ". Also in this case, the amount of circulating cooling water 44 increases,
a temporarily rises, for example, as indicated by a chain line 44a. However, immediately through the pipe 43, the cooling water adjusting tank 40
Since the cooling water 44 in the cooling water tank 41 flows into the cooling water tank 41, overflow of the cooling water 44 in the cooling water adjusting tank 40 is prevented, and the water surface 44a returns to the original level shown by the solid line. The temperatures of the cooling water 104 and the cooling water 134 are adjusted in the same manner as described above.

The temperature of the circulating heated water 74 is changed from T4 to T4 '.
To lower the temperature, the set temperature of the temperature indicating controller 90 is set to T
4 '. Based on the signal from the thermometer 85 or 87, the temperature indicating controller 90 opens the cooling water proportional control valve 92 at an opening proportional to the value of (T4−T4 ′) and opens the cooling water tank 4.
One cold water 44 'is supplied through conduit 91 to conduit 76 to bring circulating warm water 74 to temperature T4'. As a result, the amount of circulating heated water 74 increases, so that
The zero water surface 74a temporarily rises, for example, as shown by a one-dot chain line 74a. However, since the warming water 74 in the warming water adjusting tank 70 flows into the warm water tank 71 through the pipe 73,
The overflow of the heated water 74 in the heated water adjusting tank 70 is prevented, and the water surface 74a returns to the original level shown by the solid line. When raising the temperature of the circulating heated water 74 from T4 to T4 ",
The set temperature of the temperature indicating controller 90 is set to T4 ". Based on the signal from the thermometer 85 or 87, the temperature indicating controller 90 sets the opening proportional to the value of (T4" -T4) and makes the heating water proportional. The control valve 94 is opened to supply the hot water 74 ′ of the hot water tank 74 through the conduit 93 to the conduit 76 so that the circulating warm water 7
4 to the temperature T4 ". Therefore, since the amount of the circulating heating water 74 increases, the water surface 74a of the heating water adjusting tank 70 rises temporarily as shown by a one-dot chain line 74a. Since the heated water 74 in the adjustment tank 70 flows into the hot water tank 71, the overflow of the heated water 74 in the adjustment tank 70 is prevented, and the water surface 74a returns to the original level shown by the solid line.

When the production is stopped, the cooling water solenoid on-off valve 49
a, 50a, 109a, 110a, 139a and 14
0a is closed, and the cooling water solenoid on-off valves 51a, 111a
And 141a are "open". At the same time, the heated water electromagnetic on-off valves 49b, 50b, 109b, 110b, 139b and 140b are opened, and the heated water electromagnetic on-off valves 51a,
111a and 141a are "closed". Therefore, in the same manner as described above, the heated water 74 immediately flows into the guide holes of the primary re-drawing device 4, the secondary re-drawing device 5, and the doming device 6. At the same time, the cooling water bypass solenoid on-off valves 51a, 11
Cooling waters 44, 104 and 134 flow through 1a and 141a, respectively. At the time of this switching, the cooling water in the guide holes of the primary re-drawing device 4, the secondary re-drawing device 5, and the doming device 6 flows into the heated water adjusting tank 70 through the conduit 82, so that the heated water adjusting tank 70 Water surface 74a rises,
On the other hand, the water surface 44a of the cooling water adjustment tank 40 is, for example,
It descends as shown by 4a. But in each case,
The water surface returns to its original position in a short time due to the water flowing through the pipes 73 and 43. If the water level drops,
Although the pump may run idle and become entrapped with air, causing a failure, such a defect is prevented since the water surface rises immediately as described above. Note that only one of the set of the thermometer 55 and the pressure gauge 56 and the set of the thermometer 57 and the pressure gauge 58 may be provided. Only one of the set of the thermometer 85 and the pressure gauge 86 and the set of the thermometer 87 and the pressure gauge 88 may be provided. Only one of the set of the thermometer 115 and the pressure gauge 116 and the set of the thermometer 117 and the pressure gauge 118 may be provided. Thermometer 145 and pressure gauge 1
Among the 46 sets and the set of thermometer 147 and pressure gauge 148,
Only one of the sets may be provided.

[0046]

[Embodiments] The cross-sectional area is 0.1 m ² and the height is 1 m.
Of the cylindrical cooling water adjusting tanks 40, 100, and 130, and the heating water adjusting tank 70, and the cross-sectional area of each is 2 m.
² , the rectangular cylindrical cold water tank 41, 101, 1
31 and the hot water tank 71 are installed on the same floor 42,
50 mm inner diameter as pipes 43, 73, 103 and 133
Was used. Conduits 46, 76, 106 and 13
6 had an inner diameter of 25 mm. The bypass flip-flop on / off valves 51, 111, and 141 were disposed within 1 m from the transfer press 1. Each tank 40, 1
00, 130, 70 and each tank 41, 101, 13
Water was stored in the pipes 1 and 71 until they reached the inner tops of the pipes 43, 73, 103 and 133. The water surface height H at this time was 80 cm. Cold water tanks 41, 101 and 13
The temperature of one of the cold waters 44 ', 104' and 134 'was maintained at 26 ° C, 35 ° C and 35 ° C by heat exchangers, respectively. The temperature of the hot water 74 'was kept at 65 degrees. The set pressures of the pressure regulating valves 54, 84, 114 and 144 were all set to 3 kgf / cm ² . Temperature indicating controllers 60, 9
The set temperatures of 0, 120 and 150 are each 34 ° C.
(T1), 60 ° C (T4), 39 ° C (T2) and 40 ° C
(T3).

The laminated coil for manufacturing the seamless can 168 has a standard thickness of 0.17 mm and one side of a coil of a tin-free steel (electrolytic chromic steel sheet) 200 made of a cold rolled steel sheet having a DR6M temper. Thickness 1
Polyethylene terephthalate / polyethylene isophthalate copolymer having a thickness of 7 μm and a thickness of 25 μm on the other surface (molar ratio: 8
8/12, melting point: 230 ° C., glass transition temperature (Tg: 7)
The film 201 is produced by heat bonding a film 201 (0 ° C.) and coated with a small amount of glamor wax (melting point: 60 ° C.). The laminated coil was punched into a blank having a diameter of 179 mm by a cupping machine (not shown) and subjected to shallow drawing at a drawing ratio of 1.56, thereby forming a cup body 165 having an average height of 44 mm and an inner diameter of 112 mm. The radius of curvature of the processing corner 8a of the die 8 of the primary redrawing device 4 is 0.4 mm, and the radius of curvature of the processing corner of the die 18 of the secondary redrawing device 5 is also 0.4 m.
m. The primary redrawing ratio was 1.37 and the secondary redrawing ratio was 1.27. Formed seamless can 168
Had a height of 127 mm, an outer diameter of 66 mm, and an average thickness of the trunk portion of 0.13 mm. The wrinkle holding force was 3.5 ton.

Before the start of the operation, the heated water electromagnetic on-off valve 49b,
50b, 109b, 110b, 139b and 140b
Is opened, and the heated water electromagnetic on-off valves 51b, 111b, and 141b are closed, and the heated water 7 is supplied to each of the primary re-drawing device 4, the secondary re-drawing device 5, and the doming device 6.
4 was circulated. When the temperature of the thermocouple 26 of the primary re-drawing device 4 reaches 45 ° C., the cooling water solenoid on-off valve 4
9a, 50a, 109a, 110a, 139a and 1
40a is "open" and the cooling water solenoid on-off valves 51a, 11a
1a and 141a are "closed". The cup stopper automatically opens after 10 seconds based on the signal at this time,
The cup bodies 165 were successively fed into a transfer machine 1 of the type shown in FIG. 1, and production, that is, redrawing was started. Cooling water solenoid on-off valve 49a, 50a, 109
a, 110a, 139a and 140a are opened, and the cooling water electromagnetic on-off valves 51a, 111a and 141a
Becomes “closed”, and the guide holes 13, 14, 15, 23, 2
The time required for the cooling water to circulate through 4, 25, 33 and 34 was about 18 seconds. The production speed by the transfer machine 1 was 100 strokes per minute.

The flange length of the produced seamless cans 168 was automatically and completely inspected by the method described in JP-A-8-198234 to determine the flange length.
For the test, the set temperature T2 of the temperature indicating controller 120 for the secondary re-drawing device 5 was set to 39 ° C.
Set the temperature T3 of the temperature indicating controller 150 to 40
℃, the temperature indicating controller 6 for the primary re-drawing device 4
The set temperature T1 of 0 is 30 ° C., 35 ° C., 40 ° C. and 45 ° C.
C., and a seamless can 168 was produced. The time required for the temperature switching was about 20 seconds at any temperature. Measure the thickness of the tin-free steel 200 at the bottom center of each seamless can 168 (this thickness is equal to the thickness of the blank tin-free steel), and
The relationship between the flange length and the cooling water temperature was investigated. The results are shown in FIG. Lines 1, 2, 3, and 4 show the flange lengths when the cooling water temperature is 30 ° C, 35 ° C, 40 ° C, and 45 ° C, respectively. It can be seen that the thicker the plate and the lower the cooling water temperature, the longer the flange length. It was found that when the cooling water temperature was 35 to 45 ° C., the change in 5 ° C. changed the flange length by about 0.6 mm.

Further, for the test, the set temperature T 1 of the temperature indicating controller 60 for the primary re-drawing device 4 was set to 34 ° C.
The set temperature T3 of the temperature indicating controller 150 for the doming device 6 is set to 40 ° C., and the set temperature T2 of the temperature indicating controller 120 for the secondary re-drawing device 5 is set to 15 ° C.
C., 30.degree. C., 35.degree. C. and 40.degree. C., the flange length of the seamless can 168 was inspected, and the relationship between the thickness of the tin-free steel 200, the flange length and the cooling water temperature was determined in the same manner as described above. Examined. The results are shown in FIG. Lines 1, 2, 3, 4 and 5 show the flange lengths when the cooling water temperature is 15 ° C, 26 ° C, 30 ° C, 35 ° C and 40 ° C, respectively. Also in this case, it is understood that the flange length increases as the plate thickness increases and the cooling water temperature decreases. When the cooling water temperature was 26 to 40 ° C., it was found that a change in 5 ° C. changed the flange length by about 0.5 mm. Therefore, when the flange length approaches the upper limit or the lower limit of the specified range value (for example, 2 to 4 mm) during production, FIG.
By changing the set temperature T1 or T2 of the temperature indicator 60 or 120 based on 0 and FIG. 11, the seamless can 168 having the defective flange length can be eliminated.

[0051]

According to the first and second aspects of the present invention, it is possible to quickly and precisely control the temperature of a die, a wrinkle presser and a punch of a seamless can manufacturing apparatus. The invention according to claim 3 has an effect that, in addition to the effect of the invention according to claim 1, stable temperature control of the die, the wrinkle presser, and the punch of the seamless can manufacturing apparatus is possible. The invention according to claim 4 has an effect that, in addition to the effect of the invention according to claim 3, the temperatures of the primary redrawing device and the secondary redrawing device can be individually adjusted to a preferable temperature during production. . The invention according to claim 5 has an advantage of high productivity in addition to the effect of the invention according to claim 3.

[Brief description of the drawings]

FIG. 1 is a plan view for explaining an example of a transfer press provided with a redrawing device, which is one form of the seamless can manufacturing device of the present invention.

FIG. 2 is a side view of a main part of FIG. 1;

FIG. 3 is a longitudinal sectional view of a main part of the primary re-drawing-ironing device shown in FIG. 1;

FIG. 4 is a longitudinal sectional view of a main part of the secondary re-drawing-ironing device shown in FIG. 1;

5 is a vertical sectional view of a main part of the doming apparatus shown in FIG. 1, in which a left side from a center line shows a state immediately before the start of molding, and a right side shows a state immediately after the end of molding. is there.

FIG. 6 is an enlarged view of a portion A in FIG. 3 showing a state during primary redrawing and ironing of the cup body.

FIG. 7 is an example of a temperature control device of the present invention,
FIG. 4 is a water circulation circuit diagram for the primary re-drawing device shown in FIG. 3.

FIG. 8 is an example of a temperature control device of the present invention,
FIG. 6 is a water circulation circuit diagram for the secondary re-drawing device and the doming device shown in FIGS. 4 and 5, respectively.

FIG. 9 shows an example of a water circulation circuit diagram of a main part of the temperature control device when a plurality of transfer presses of FIG. 1 are provided.

FIG. 10 is a diagram showing an example of the relationship between the thickness of a blank, the temperature of cooling water flowing through a primary redrawing device, and the flange length of a seamless can.

FIG. 11 is a diagram showing an example of the relationship between the thickness of a blank, the temperature of cooling water flowing through a secondary redrawing device, and the flange length of a seamless can.

[Explanation of symbols]

1 Transfer press (seamless can production equipment) 1 'Transfer press (seamless can production equipment) 1 "Transfer press (seamless can production equipment) 4 Primary redrawing equipment (seamless can production equipment) 5 Secondary redrawing equipment (seamless can production) 6) Doming device (seamless can manufacturing device) 13 Guide hole 14 Guide hole 15 Guide hole 23 Guide hole 24 Guide hole 25 Guide hole 33 Guide hole 34 Guide hole 40 Cooling water adjusting tank 41 Cold water tank 44 Cooling water 44 'Cold water 46 Conduit (first conduit) 47 cooling water pump 48 conduit (second conduit) 49 upstream flip-flop on / off valve 49a cooling water electromagnetic on / off valve (first cooling water on / off valve) 49b heated water electromagnetic on / off valve (first) 50 downstream flip-flop on / off valve 50a cooling water electromagnetic on / off valve (second cooling water on / off valve) 5 b Heated water electromagnetic on-off valve (second heated water on-off valve) 51 Flip-flop on-off valve for bypass 51a Cooling water electromagnetic on-off valve (third cooling water on-off valve) 51b Heated water electromagnetic on-off valve (third heated water on / off valve) Valve) 52 conduit (third conduit) 55 thermoelectric thermometer (first thermometer) 57 thermoelectric thermometer (second thermometer) 60 temperature indicating controller 61 cold water supply conduit (fourth conduit) 62 proportional control valve 63 hot water supply conduit (fifth conduit) 64 proportional control valve 70 heated water regulating tank 71 heated water tank 74 heated water 74 'hot water 76 conduit (sixth conduit) 77 heated water pump 78 conduit (seventh) 82 conduit (eighth conduit) 85 thermoelectric thermometer (third thermometer) 87 thermoelectric thermometer (fourth thermometer) 90 temperature indicating controller 91 conduit for chilled water supply (ninth conduit) ) 92 Proportional control valve 93 Hot water supply Conduit (tenth conduit) 94 Proportional control valve 100 Cooling water regulating tank 101 Cold water tank 104 Cooling water 104 'Cold water 106 Conduit (first conduit) 107 Cooling water pump 108 Conduit (second conduit) 109 Upstream flip-flop On-off valve 109a Cooling water electromagnetic on-off valve (first cooling water on-off valve) 109b Heated water electromagnetic on-off valve (first heated water on-off valve) 110 Downstream flip-flop on-off valve 110a Cooling water electromagnetic on-off valve (second cooling) Water on / off valve 110b Heated water electromagnetic on / off valve (second heated water on / off valve) 111 Flip-flop on / off valve for bypass 110a Cooling water electromagnetic on / off valve (third cooling water on / off valve) 111b Heated water electromagnetic on / off valve (third) Of the heating water) 112 conduit (third conduit) 115 thermoelectric thermometer (first thermometer) 117 thermoelectric thermometer (second thermometer) 120 Degree indicating controller 121 Cold water supply conduit (fourth conduit) 122 Proportional control valve 123 Hot water supply conduit (fifth conduit) 124 Proportional control valve 165 Cup body 168 Seamless can 168a Flange part 200 Metal sheet (metal plate) 201 Organic coating

Claims (5)

[Claims] 1. A method for adjusting the temperature of a seamless can manufacturing apparatus for forming a seamless can having a flange portion by redrawing from a cup body made of a metal plate coated on both sides with an organic coating, comprising: After passing through a first conduit between the cooling water regulating tank and the cooling water pump, the cooling water is supplied to the conduit through a second conduit between the cooling water pump and the conduit of the seamless can manufacturing apparatus, and then supplied to the third conduit. Circulates back to the cooling water regulating tank through the conduit of (2), detects the temperature of the cooling water in the second conduit and / or the third conduit, and based on the detected value, supplies cold water or cold water supplied to the first conduit. A method for adjusting the temperature of a seamless can manufacturing apparatus, comprising adjusting the amount of hot water. 2. An apparatus for controlling the temperature of a seamless can manufacturing apparatus for forming a seamless can having a flange portion by redrawing from a cup body made of a metal plate coated on both sides with an organic film, the apparatus comprising: Cooling water adjusting tank; Cooling water tank connected to the cooling water adjusting tank and having a much larger cross-sectional area than the cooling water adjusting tank; Hot water tank having a much larger cross-sectional area than the cooling water adjusting tank; Cooling water pump; A first conduit for connecting a cooling water pump; an upstream flip-flop on-off valve comprising a first cooling water on-off valve and a first heated water on-off valve connected to the inlet side of the guide hole of the seamless can manufacturing apparatus; A downstream flip-flop on / off valve connected to the outlet side of the guide hole; a bypass including a third cooling water on / off valve and a third heated water on / off valve A second conduit connecting the cooling water pump with the first cooling water switching valve and the third cooling water switching valve; a cooling water regulating tank, a second cooling water switching valve, and a third cooling water switching valve. A third conduit for connecting the cooling water on-off valve; a first thermometer and / or a second thermometer for detecting a temperature of the cooling water in the second conduit and / or the third conduit; a first temperature A temperature indicating controller to which the output of the thermometer and / or the second thermometer is input; a fourth conduit connecting the chilled water tank and the first conduit, having a first proportional control valve in between;
And a fifth conduit connecting the hot water tank and the first conduit having a second proportional control valve in between, wherein the output of the temperature indicating controller is a first proportional control valve and a second proportional control valve. A temperature control device for a seamless can manufacturing device, wherein the temperature is input to the device. 3. The apparatus according to claim 2, further comprising: a heated water regulating tank having a cross section much smaller than that of the heated water tank; a heated water pump; a sixth conduit connecting the heated water regulating tank and the heated water pump; A seventh conduit connecting the hot water pump to the first heated water on-off valve and the third heated water on-off valve; a heated water adjusting tank and a second conduit
An eighth conduit connecting the warming water on / off valve and the third warming water on / off valve; a third thermometer for detecting the temperature of the warming water in the seventh conduit and / or the eighth conduit; and / or 4
A temperature indicating controller to which the output of the third thermometer and / or the fourth thermometer is input; a ninth connecting a chilled water tank and a sixth conduit having a third proportional control valve therebetween. And a tenth conduit connecting the hot water tank and the sixth conduit having a fourth proportional control valve in the middle, and a flip-flop on / off valve for bypass is disposed near the seamless can manufacturing apparatus. A temperature control device for a seamless can manufacturing device, comprising: 4. A seamless can manufacturing apparatus includes a primary re-drawing device and a secondary re-drawing device, wherein the primary re-drawing device supplies the first cooling water from the first cooling water adjustment tank and the first cold water tank. The temperature control device for a seamless can manufacturing apparatus according to claim 2, wherein the second re-drawing device is supplied with the second cooling water from the second cooling water adjustment tank and the second cold water tank. 5. The temperature control device for a seamless can production device according to claim 4, wherein a plurality of seamless can production devices are provided.