JPH06339799A - Method and apparatus for die formation - Google Patents

Abstract

PURPOSE:To improve the productivity by improving the working rate of a press machine and a lower die treating station. CONSTITUTION:In a die formation apparatus, a first and a second press machines 2A, 2B for executing the die formation by engaging an upper die with the lower dies A, B fixed to a bed 2a, the common lower die treating stations 4, 5 for executing the different treatment from the die formation to the lower dies A, B conveyed into each of press machines 2A, 2B and a conveying device 1 are provided. In the conveying device 1, the first lower die A is conveyed along a loop-state first conveying passage 1A from the first press machine 2A to the first press machine 2A through the lower die treating stations 4, 5 and the second lower die B is conveyed along a loop-state second conveying passage 1B from the second press machine 2B to the second press machine 2B through the lower die treating stations 4, 5. On the first conveying passage 1A, three sets of mutually the same lower dies A are arranged and on the second conveying passage 1B, three sets of mutually the same lower dies B are arranged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding method using a press machine, and a molding machine comprising a press machine and a conveying device arranged around the pressing machine.

[0002]

2. Description of the Related Art Conventionally, there is a press machine in which an upper die is engaged with a lower die fixed to a bed to perform die forming (for example, Japanese Utility Model Publication No. 4-79610 (Japanese Patent Application No. 2-111722).
reference〕. In the mold forming method using this type of press, the same number of upper molds and lower molds are prepared.

[0003]

However, in this type of molding method, after the molding is completed, only the lower mold is carried out of the press machine in preparation for the next molding, and then a treatment different from the molding is performed. It may be performed on the lower die, and in this case, the press machine is on standby. Therefore, the operating rate of the press machine is reduced and the productivity is reduced. Therefore, a main object of the present invention is to provide a molding method and apparatus capable of improving the operating rate of a press machine and improving the productivity.

By the way, the processing in the lower mold processing station, which processes the lower mold differently from the molding, is generally performed in a shorter time than the molding by the press machine. Therefore, if one press machine is provided for one lower mold processing station, the operating rate of the lower mold processing station is reduced. Therefore, another object of the present invention is to provide a molding apparatus capable of improving the operating rate of the lower mold processing station.

By the way, when the conveying surface of the conveying device for conveying the lower mold is extended to the bed of the press, it is necessary to let the level of the conveying surface be below the receiving surface level at the time of molding. In this case, if the lifting device that raises and lowers the transfer surface is configured by a lifter such as a pantograph, the level of the transfer surface may increase. Therefore, still another object of the present invention is to provide a molding apparatus capable of improving the workability by lowering the conveying level.

Further, when only the lower die is carried in and out of the press machine while the upper die is attached to the upper part of the press machine, it is necessary to sufficiently position the lower die. Therefore, another object of the present invention is to provide a molding apparatus capable of positioning the lower mold on the bed of the press machine.

Further, in high-mix low-volume production, it is necessary to change the molding time and the like depending on the type of the lower mold.
In this case, if the operator discriminates and inputs the type of the lower mold each time, it becomes difficult to automate the manufacturing. Therefore, still another object of the present invention is to provide a mold forming apparatus capable of automatically discriminating the type of the lower mold and automating the line of high-mix low-volume production.

[0008]

In order to achieve the above object, the method according to the first aspect of the present invention comprises a lower die fixed to a bed of a press machine and an upper die which meshes with the lower die. In the mold forming method of forming a mold using the above, first, a plurality of mutually identical lower molds are prepared for one upper mold. During molding with one of these lower molds and the above upper mold,
A process different from the molding is performed on the other lower mold of the plurality of lower molds.

On the other hand, in the apparatus of the second aspect of the present invention, first, the lower die fixed to the bed is engaged with the upper die to form the die, and the lower die is subjected to a treatment different from the die forming. A lower die processing station for performing the above is provided, and a carrying device for carrying the lower die along a carrying path from the press machine to the lower die processing station. In such a molding apparatus, a plurality of identical lower molds are provided on the transport path including the pressing machine and the lower mold processing station.

According to the first or second aspect of the present invention, while molding is being performed by one lower die of the plurality of lower dies and the upper die attached to the pressing machine, the other lower dies are ,
Processing other than molding can be performed. Therefore, after the molding is completed and the lower mold is carried out of the press machine, the other lower mold can be carried in the press machine immediately without carrying out the upper mold. Therefore, the operating rate of the press machine is improved and the productivity is improved.

According to a third aspect of the present invention, first, a plurality of press machines for forming the die by engaging the upper die with the lower die fixed to the bed are provided. On the other hand, the lower die carried into each of the above-mentioned press machines is provided. In addition, a common lower mold processing station for performing processing different from molding is provided. Further, a transfer device for transferring the lower molds is provided along a transfer path between the press machines and the common lower mold processing station.

According to a fourth aspect of the present invention, first, first and second press machines for engaging the lower mold fixed to the bed with the upper mold to form the mold, and the lower press machines to be carried into each of these press machines. The mold is provided with a common lower mold processing station for performing processing different from molding, and a transfer device. The transport device transports the first lower mold along a loop-shaped first transport path extending from the first press machine through the lower mold processing station to the first press machine, and transfers the first lower mold from the second press machine. The second lower mold is conveyed along a loop-shaped second conveyance path that passes through the mold processing station and reaches the second press machine. A plurality of first lower dies that are the same as each other are provided on the first transport path, and a plurality of second lower dies that are the same as each other are provided on the second transport path.

According to the invention of claim 3 or 4, since a common lower mold processing station is provided for a plurality of press machines, the processing time in the lower mold processing station is shorter than the time required for molding. However, since the lower molds can be sequentially subjected to different treatments in the lower mold treatment station, the operation rate of the lower mold treatment station is improved. In addition, claim 4
According to the invention of, like the invention of claim 1 or 2,
The operating rate of the press machine is also improved.

According to a fifth aspect of the present invention, in the mold forming apparatus according to the second, third or fourth aspect, the transfer surface of the transfer device for transferring the lower mold has entered the bed, and the transfer surface is in the bed. An elevating device for elevating between a level above and a level below the receiving surface level of the lower mold at the time of molding is provided. The elevating device includes a linear cam having an inclined surface, a drive device for horizontally reciprocating the linear cam, and a driven node for vertically moving by moving the linear cam forward and backward to elevate and lower the conveying surface. Have and.

According to the fifth aspect of the present invention, the lifting device vertically moves the driven cam by reciprocating the linear cam in the horizontal direction, and thus has a vertically compact structure. Therefore, the level of the transport surface is lowered and the workability is improved.

According to a sixth aspect of the present invention, in the molding apparatus according to the second, third, or fourth aspect, the bed is moved up and down to be fitted into a positioning hole to position the lower mold. Pins are provided.

According to the invention of claim 6, since the positioning pin moves up and down and fits into the hole to be positioned, the lower die can be accurately positioned in the bed.

According to a seventh aspect of the present invention, in the molding apparatus according to the second, third or fourth aspect, the pressing machine or the lower die processing station is provided with a detection device for detecting a discriminated portion provided in the lower die. .

According to the invention of claim 7, in the press machine or the lower die processing station, since the detection device detects the portion to be discriminated, the type of the lower die can be discriminated automatically.
Manufacturing automation can be achieved.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS.
Follow the instructions below. FIG. 1 shows a planar layout of a molding system (mold molding apparatus). This molding system is, for example, a system for molding a deck and a hull corresponding to the upper and lower parts of the hull of a small planing boat. The deck is produced in the loop-shaped first transfer path 1A including the central and upper horizontal transfer lines, while the hull is produced in the loop-shaped second transfer path 1B including the central and lower horizontal transfer lines in the same figure. To produce.

The first transport path 1A is provided with a first press machine 2A, a first demolding station 3A, a coating station 4, a drying oven 5 and a first preform setting station 6A in a loop shape. There is. on the other hand,
A second press machine 2B, a second demolding station 3B, the coating station 4, the drying furnace 5, and a second preform setting station 6B are provided in a loop on the second transport path 1B. .

Each of the press machines 2A and 2B has a bed 2a.
The upper mold C of FIG. 2 is meshed with the lower molds A and B fixed to and the molten resin is injected into the cavity formed therebetween to mold the deck or hull. The press machines 2A and 2B have the same structure as each other, and the upper die C is fixed to the slider 2b that moves up and down. In addition,
It takes about 30 minutes for the molding by the presses 2A and 2B.

In this molding system, with respect to the upper mold C for one deck, the lower molds (first lower mold) A for the same deck are the first as shown by the chain double-dashed line in FIG. Transport path 1
Three are provided on A, while one upper mold for hull C
Three lower molds (second lower molds) B for the same deck with respect to each other (see FIG. 2) are provided on the second transport path 1B.

The coating station 4 is a station for applying a paint called gel coat to the inner surfaces of the lower molds A and B of the deck and the hull by a robot (not shown). On the other hand, the drying furnace 5 is a device for drying the coating material applied to the lower molds A and B. That is, the coating station 4 and the drying oven 5 are the press machines 2A,
This is a common lower mold processing station for performing a process different from the mold forming by 2B on the lower molds A and B. In addition, drying oven 5
The lower molds A and B are warmed for about 15 minutes to dry the gel coat.

Each of the above preform set stations 6
A and 6B are stations for setting a reinforcing material F (see FIG. 2) made of preformed reticulated glass fibers in the lower molds A and B. Each demolding station 3A,
3B is a station for removing the molded deck or hull from the lower molds A and B to perform the mold removal. When changing the type of product to be molded, each demolding station 3
The lower molds A and B and the upper mold C (FIG. 2) are carried out from A and 3B to the outside of the first and second transport paths 1A and 1B.

The loop-shaped first and second conveying paths 1
The conveying device 1 equipped with A and 1B includes a lift conveyor 11 inside the press, a conveyor 12 on both sides of the press, and a four-corner lift conveyor 1.
3, both side handing conveyors 14 and 15, a merging / lowering conveyor 16, a return conveyor 17 and a branching / lowering conveyor 18. These conveyors 11-18
Is driven by a motor (not shown) capable of rotating in the forward and reverse directions, and always conveys the lower molds A and B along the arrow. That is, the transfer device 1 is the lift conveyor 1 in the press machine.
1, press side conveyor 12, four-corner lift conveyor 13,
The first transfer from the first press machine 2A to the first press machine 2A through the coating station 4 and the drying furnace 5 by the both side transfer conveyors 15, the confluent lift conveyor 16, the return conveyor 17, the branch lift conveyor 18, and the like. The lower mold A of the deck is conveyed along the path 1A, while the hull is conveyed along the second conveying path 1B from the second press machine 2B to the second press machine 2B via the coating station 4 and the drying oven 5. The lower mold B is conveyed. The lower molds A and B are transported while being fixed on the pallet. Further, each of the conveyors 11 to 18 is provided with a pallet detector (not shown) so that the pallet can be automatically conveyed by a known method.

Next, the in-press elevator conveyor 11 will be described. The in-press elevator conveyor 11 is provided on the beds 2a of the press machines 2A and 2B, and the transfer roller 2 of FIG.
The transport surface formed by 0 has entered. A sprocket 21 is fixed to the carrying roller 20, and the carrying roller 20 and the sprocket 21 are attached to the groove 2 of FIG.
It is integrally and rotatably supported in the unit 2. The groove 22
Inside, a roller chain 23 is arranged along the longitudinal direction thereof, and by driving the roller chain 23, the sprocket 21 and the conveying roller 20 rotate, and the lower molds A and B (fixed to the pallet P ( 1) is transported.
The roller chain 23 is engaged only with the teeth 21a at the lower end of the sprocket 21, and is not engaged with the teeth 21b at the upper end.

The in-press elevator elevator conveyor 11 includes an elevator device 29 described below. The groove 22 is formed by an elevating frame 24. A plurality of cam followers (followers) 25 are rotatably attached to the elevating frame 24. Each cam follower 25 is supported by a linear cam 26. As shown in FIG. 4 (b), the linear cam 26 has an inclined surface 26 a and reciprocates in the arrow (horizontal) direction so that the cam follower 2
Move 5 up and down. By the vertical movement of the cam follower 25, the transport roller 20 shown in FIG. The linear motion cam 26 is supported on the floor surface F1 via wheels 26b, and is driven by a drive device such as a hydraulic cylinder 27 as shown in FIG.
It reciprocates in the arrow (horizontal) direction of (b). Note that FIG.
The conveyance roller 20 of (a) conveys the pallet P at the level raised as indicated by the chain double-dashed line.

In FIG. 5A, the elevating frame 2
4 is provided with a guide device 28. Guidance device 28
Is a guide plate 28a fixed to the floor surface F1 and a frame guide roller 28 rotatably attached to the elevating frame 24.
and b. The frame guide roller 28b is shown in FIG.
By being guided by the guide groove 28c formed in the guide plate 28a of (b) and moving up and down, the vertical movement of the elevating frame 24 of FIG. 5 (a) is prevented.

As shown in FIG. 3, a large number of pallet guide rollers 31 for guiding the pallet P (FIG. 1) in the horizontal direction are provided in the bed 2a of the press machines 2A and 2B. The pallet guide roller 31 is rotatably supported by the clamp device 30 shown in FIG. Clamp device 3
0 includes a clamper 33 that swings around the hinge 32 of FIG. 6A and a hydraulic cylinder 34 that swings the clamper 33, and the pallet P is received by the clamp portion 33a.
The pallet P is fixed to the bed 2a by pressing the pallet P onto the bed 2a. When the carrying roller 20 in FIG. 4 descends to the level shown by the solid line, the pallet P descends and is supported by the receiving money 35 in FIG. 6A. That is, the raising / lowering device 29 of FIG. 4A raises / lowers the conveyance roller 20 between a level above and below the receiving surface level 35a of the receiving money 35 of FIG. 6A.

In FIG. 3, a positioning device 6 is provided at the upstream end and the downstream end of the bed 2a in the carrying direction.
0 is set. As shown in FIG. 7, the positioning device 60 includes a positioning pin 61 that fits into a positioning hole Pa provided in the pallet P and positions the pallet P. The positioning pin 61 moves up and down when oil is pumped to the first and second hydraulic chambers 62 and 63, and is fitted into and disengaged from the positioned hole Pa.

In FIG. 3, a detecting device 40 is provided in the bed 2a. The detection device 40 has, for example, six magnetic sensors 41, as shown in FIG. On the other hand, in the lower molds A and (B) of FIG. 8B, six female screws (detected portions) H into which a plug (not shown) is screwed are formed, depending on the types of the lower molds A and (B). The plug is screwed into a predetermined female screw H. This detection device 40
Detects the female screw H and the plug and outputs the detection signal to a control device (not shown). The control device determines the types of the lower molds A and (B) from the detection signal. The magnetic sensors 41 are fixed to a mounting plate 42.
2 has a structure in which it vertically moves due to the expansion and contraction of the rod 43, and rises as indicated by a chain double-dashed line only at the time of detection. In addition,
At the center of the pallet P, the magnetic sensor 41 and the mounting plate 4
Through hole Ph that allows 2 to approach the lower molds A and (B)
Are formed.

Next, the merging / lifting conveyor 16 and the branching / lifting conveyor 18 shown in FIG. 1 will be described. The merging / lowering conveyor 16 is arranged in the coating station 4 and carries out the pallet P conveyed from the right hand conveyor 15 to the central drying furnace 5. On the other hand, the branch elevator conveyor 18 is for branching the pallet P conveyed from the drying furnace 5 to the pair of transfer conveyors 14 on the left side. As shown in FIG. 9, these conveyors 16 and 18 have substantially the same structure as the in-press elevator conveyor 11 of FIG. However, the clamp device 30
It is not provided on each of the conveyors 16 and 18 in FIG. In addition, the confluent lift conveyor 16 and the branch lift conveyor 18
Inside, both side handing conveyors 15 or 14 (Fig. 1)
The transport roller 15a or 14a of No. 1 has entered. In addition, the merging / lowering conveyor 16 and the branching / lowering conveyor 18
Other structures of the press are the elevator inside the press machine 11 of FIG.
The same reference numerals are given to the same or corresponding portions, and detailed description thereof will be omitted.

The above-mentioned four-corner lifting conveyor 13 shown in FIG. 1 is disposed in the demolding stations 3A and 3B or the preform setting stations 6A and 6B, and converts the conveying direction of the pallet P by 90 °. The four-corner lifting conveyor 13 has the same structure as the merging lifting conveyor 16 or the branch lifting conveyor 18 except that it does not have the detection device 40, and detailed illustration and description thereof will be omitted.

FIG. 10 shows the two-sided press conveyor 12. The press both-sides conveyor 12 includes a conveying roller 12a that conveys the pallet P (FIG. 1) and a guide roller 50 that guides the side surface of the pallet P (FIG. 1). The surface of the conveyer 12 on both sides of the press has the above-mentioned conveying roller 12a.
The portion excluding the guide roller 50 and the guide roller 50 is covered with a striped steel plate 51 to improve workability.

Both of the above side transfer conveyors 14 and 1 in FIG.
5 and the return conveyor 17 have the same structure as the press both-side conveyor 12. A stopper 15s is provided in front of the coating station 4 on the transfer conveyor 15 on the right side. Each stopper 1
5s mechanically prevents lower molds A and B from entering the coating station 4 and retracts downward,
The lower molds A and B are allowed to be loaded into the coating station 4.

Next, the operation of the above configuration will be described. When the molding of the deck or the hull is completed in each of the press machines 2A and 2B, the lower molds A and B are moved to the first and second demolding stations 3A and 3B by the press side conveyors 12 and the four-corner lift conveyors 13, respectively. Be delivered to. The first and second demolding station 3
In A and 3B, the deck or hull is taken out. After this take-out, the four corner lift conveyors 13 are lowered slightly, and then the lower molds A and B are on the right hand side transfer conveyor 15.
Are transported to the coating station 4. At this time, when the other lower molds A and B exist in the coating station 4, the stopper 15s projects upward, and the lower molds A and B are prevented from entering.

At the coating station 4, the lower mold A,
Apply gel coat to B. After this coating, the merging / elevating conveyor 16 is slightly elevated, and the lower dies A and B are carried into the drying furnace 5 by the merging / elevating conveyor 16 and the return conveyor 17. The drying furnace 5 heats the lower molds A and B for about 15 minutes to dry the gel coat. After this, lower mold A,
B is conveyed to the branch lift conveyor 18. The branch elevator conveyor 18 determines whether the lower molds A and B are for the deck or for the hull by the detection device 40. After this determination, the branch elevator conveyor 18 is slightly lowered, and the lower molds A and B are conveyed to the first or second preform setting stations 6A and 6B by the left transfer conveyor 14. At the preform setting stations 6A and 6B, the reinforcing material F (FIG. 2) is attached to the lower molds A and B. After this installation, the four corner lift conveyor 13
Is slightly elevated, and the lower molds A and B are carried into the first or second press machines 2A and 2B from the four-corner lift conveyor 13, the press-side conveyors 12 and the in-press lift conveyor 11.

When the lower molds A and B are carried into the press machines 2A and 2B, the pallet P is moved by the positioning pins 61 shown in FIG.
(FIG. 7) is positioned. Next, FIG. 4 (a)
The hydraulic cylinder 27 of FIG. 4 is driven to move the linear motion cam 26 of FIG. 4B in the horizontal direction, the cam follower 25 descends from the position of the chain double-dashed line as shown by the solid line, and the pallet P of FIG. 6 is received. Supported by gold 35. After that, the pallet P is fixed by the clamper 33, and the magnetic sensor 41 is further raised together with the mounting plate 42 of FIG. 8 to discriminate the types of the lower molds A and B. After this determination, depending on the type of the lower molds A and B, that is, the type of deck or the type of hull, the press machine 2A,
Molding is performed by 2B.

During molding by one lower mold A, (B) of the three lower molds A, (B) of FIG. 1 and the upper mold C (FIG. 2), the other lower molds A, (B ) Is conveyed, or in the coating station 4, the drying oven 5, the preform set stations 6A and (6B) and the demolding stations 3A and (3B), a process different from the molding is performed. Therefore, immediately after the molding is completed in the press machines 2A, (2B) and the lower molds A, (B) are carried out from the press machines 2A, (2B), without removing the upper mold C (FIG. 2),
The other lower molds A and (B) can be carried into the press machines 2A and (2B) to perform the next molding. Therefore, the operating rates of the press machines 2A and (2B) are improved, and the productivity is remarkably improved.

Further, since the coating station 4 and the drying furnace 5 which are common lower mold processing stations are provided for the two press machines 2A and 2B, the processing time in the coating station 4 and the drying furnace 5 can be adjusted. Even if the time is shorter than required, the lower molds A and B can be successively subjected to another treatment in the coating station 4 and the drying oven 5. Therefore, the operating rates of the coating station 4 and the drying furnace 5 are improved, and the productivity is improved.

Furthermore, the first and second conveying paths 1A, 1B
Has a loop shape, unlike the reciprocating type, the flow of the lower molds A and B is smooth.

Further, the lifting device 29 shown in FIG.
By horizontally reciprocating the direct acting cam 26 of (b), the cam follower 25 of FIG. 4 (a) is moved up and down,
The transport roller 20, that is, the pallet P is moved up and down. As described above, since the pallet P is moved up and down by using the linear motion cam 26, the level of the transport roller 20 is lowered as shown in FIG. 2, so that workability is improved.

Further, in the coating station 4, the branch lift conveyor 18, the preform setting stations 6A and 6B, the press machines 2A and 2B and the demolding stations 3A and 3B shown in FIG. 1, the pallet P is positioned by the positioning pins shown in FIG. Since it is performed by 61, the lower molds A and B are accurately positioned with respect to the upper mold C in FIG. Therefore, uneven thickness is unlikely to occur in the product.

Further, in the branch lift conveyor 18 and the press machines 2A and 2B shown in FIG. 1, the type of the lower molds A and B is discriminated by the detection device 40, so that the manufacturing of the deck and the hull can be automated.

By the way, in the first embodiment, three lower molds A and (B) of the same type are provided, but a plurality of lower molds of the same type may be used. In the invention, the same lower mold A, (B) may be one. In addition, in the first embodiment described above, the two loop-shaped transport paths 1
Although A and 1B are provided, in the invention of claim 1 or 2,
As shown in FIG. 11, a structure may be provided in which only the first transport path 1A is provided. Further, it is not necessary to form the first transport path 1A in a loop shape, and as shown in FIG. A plurality of press machines 2A and 2B are provided for the mold processing station 5A, and the lower mold A is loaded by the reciprocating operation of the conveyor 19.
You may carry it out. Further, in each of the above-mentioned embodiments, one press machine is used.
Although one or two units are provided, in the present invention, as shown in FIG.
For one lower die processing station 5A, three or more press machines 2A, 2B, 2D, 2E and three or more types of lower die A, B, D, E may be provided.

In addition, although the above-mentioned embodiment has explained the molding of the deck and the hull, the present invention can be applied not only to cowlings such as motorcycles and other resin products but also to press working of sheet metal. Further, although the lower molds A and B are fixed to the pallet P and conveyed in the above embodiment, it goes without saying that the lower molds A and B may be conveyed without being placed on the pallet P.

[0048]

As described above, according to the invention of claim 1 or 2, after the molding is completed, only the lower mold is carried out of the press machine, and the upper mold is attached to the press machine while the other lower mold is carried out. The mold can be immediately loaded into the press. Therefore, the work of loading and unloading the lower mold is simplified, and molding can be performed one after another, so that the operating rate of the press machine is improved and the productivity is improved.

On the other hand, according to the invention of claim 3 or 4, since the common lower mold processing station is provided for a plurality of press machines, the processing time in the lower mold processing station is longer than the time required for molding. Even if the length is short, it is possible to perform different treatments on the lower molds one after another in the lower mold processing station, so that the operating rate is improved and the productivity is improved.

Particularly, in the invention of claim 4, claims 1 and 2
In addition to the effect similar to the above, since the first and second conveying paths are formed in a loop shape, respectively, the flow of the lower mold becomes smooth and the productivity is further improved.

Further, according to the invention of claim 5, the level of the conveying surface is lowered and the workability is improved. Further, according to the invention of claim 6, since the lower die can be accurately positioned on the bed, the upper die can be attached to the press machine with
A plurality of identical lower molds can be used to produce a good product without uneven thickness. Further, according to the invention of claim 7, since the detection device detects the detected portion provided on the lower die, the manufacturing can be automated.

[Brief description of drawings]

FIG. 1 is a plan layout view of a mold forming apparatus showing a first embodiment of the present invention.

FIG. 2 is a schematic front view of a press machine.

FIG. 3 is a schematic plan layout view of a lift conveyor in a press machine.

FIG. 4 is a cross-sectional view of a lifting device and a front view of a linear cam.

FIG. 5 is a cross-sectional view and a front view of the guide device.

FIG. 6 is a cross-sectional view and a plan view of the clamp device.

FIG. 7 is a sectional view of a positioning device.

FIG. 8 is a plan view and a cross-sectional view of a detection device.

FIG. 9 is a plan layout view of a branch elevator and a merge elevator.

FIG. 10 is a plan view of a press double-sided conveyor.

FIG. 11 is a plan layout view showing a second embodiment.

FIG. 12 is a schematic layout diagram showing a third embodiment.

FIG. 13 is a schematic layout diagram showing a fourth embodiment.

[Explanation of symbols]

1 ... Conveying device, 1A ... 1st conveying path, 1B ... 2nd conveying path,
2A ... 1st press machine, 2B ... 2nd press machine, 2a ... Bed, 4,5 ... Lower mold processing station, 20 ... Conveying surface, 2
5 ... Follower, 26 ... Linear cam, 27 ... Drive device, 29 ...
Lifting device, 35a ... Receiving surface level, 40 ... Detection device, 61
... Locating pin, A, B ... Lower mold, Pa ... Positioned hole,
H ... Detected part.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Nobuyuki Taniguchi No. 1 Kawasaki-cho, Akashi-shi, Hyogo Prefecture Kawasaki Heavy Industries Ltd. Akashi Plant (72) Satoshi Dan Shun 1-1 Kawasaki-cho, Akashi-shi, Hyogo No. Kawasaki Heavy Industries Ltd., Akashi Factory

Claims (7)

[Claims] 1. A lower mold fixed to a bed of a press machine,
In a mold forming method of forming a mold using an upper mold that meshes with this lower mold, a plurality of lower molds identical to each other are prepared for one upper mold,
Molding, characterized in that, during molding by a lower mold of one of these lower molds and the upper mold, a process different from molding is performed on another lower mold of the plurality of lower molds. Method. 2. A press machine for engaging a lower die fixed to a bed with an upper die to perform die forming, a lower die treating station for performing a treatment different from the die forming on the lower die, and the press. In a mold forming apparatus having a conveying device that conveys a lower mold along a conveying path from a machine to a lower mold processing station, a plurality of mutually identical lower molds including the press machine and the lower mold processing station. A mold forming apparatus provided on the transport path. 3. A lower die fixed to a bed is provided with a plurality of presses for engaging the upper die with each other to perform die forming, and the lower die carried into each of the presses is subjected to a treatment different from the die forming. A mold forming apparatus provided with a common lower mold processing station for carrying out, and a carrying device for carrying the respective lower molds along a carrying path from each of the press machines to the common lower mold processing station. 4. A first and a second press machine for engaging a lower mold fixed to a bed with an upper mold to form a mold, and a lower mold carried into each of these press machines is different from the mold forming. The first lower mold is conveyed along a common lower mold processing station that performs the process of (1) and a loop-shaped first conveyance path from the first press machine through the lower mold processing station to the first press machine. And a transfer device that transfers the second lower mold along a loop-shaped second transfer path from the second press machine through the lower mold processing station to the second press machine. A mold forming apparatus in which a plurality of first lower molds are provided on the first transport path, and a plurality of second lower molds that are identical to each other are provided on the second transport path. 5. The transport surface of a transport device for transporting the lower die as set forth in claim 2, 3 or 4, wherein the transport surface has entered the bed, and the transport surface is the receiving surface of the lower die at the time of mold molding in the bed. A lifting device for raising and lowering between a level above and below the level is provided, wherein the lifting device includes a linear cam having an inclined surface, and a drive device for horizontally reciprocating the linear cam. A mold forming apparatus having a follower that moves up and down by the reciprocating motion of the linear cam to raise and lower the conveying surface. 6. The mold forming apparatus according to claim 2, 3 or 4, wherein the bed is provided with a positioning pin that moves up and down to fit into a hole to be positioned to position the lower mold. 7. The mold forming apparatus according to claim 2, 3 or 4, wherein the press machine or the lower mold processing station is provided with a detection device for detecting a discriminated portion provided in the lower mold.