JP2704884B2 - Press equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press apparatus suitable for pressing a large part to a small part having a plurality of pressing steps by a single press.

[Conventional technology]

Conventionally, in order to manufacture a press-formed product, it has been general to select a press apparatus suitable for the size of the press-formed product and the molding method. For example, large parts are performed by a large press machine, and small parts are performed by a small press machine. There is also a conventional technique for pressing a large part or a small part with one press device, for example, a known technique disclosed in Japanese Patent Application Laid-Open No. Sho 62-45435. This is because, in the press machine for large parts, the press dies for small workpieces consisting of a plurality of units within the range of the capability of the press machine are arranged in a line so as to be interchangeable with the press dies for large parts, and are adjacent to each other. The transfer robots are arranged one by one between the small workpiece press dies, and the plurality of small workpiece press dies press-mold the small workpieces. And is conveyed in order to a small work press die for the next process.

[Problems to be solved by the invention]

In the case of pressing large parts and small parts separately with a press machine, in a mass production factory for various small-quantity production, a large press machine for large parts may have to be stopped due to a change in production plan, etc. There is a problem that the operation rate of the large press machine is reduced. Also, as described in the above-mentioned JP-A-62-45,
The system disclosed in Japanese Patent No. 435 can effectively utilize non-operation time, continuously perform press working from a material to a final part, expand versatility, and enable flexible production. However, this prior art does not describe the setup change means when the type of a part to be molded is changed from a large part to a small part or from a small part to a large part, and the configuration is also disclosed. It has not been.

The present invention is capable of pressing many types of parts from a large part to a small part having a plurality of pressing steps with a single pressing device, and a component loading / unloading device so as to easily cope with a change in the type of the component. Provided is a press device capable of improving the operation rate of a press device, and improving versatility and productivity by configuring a means for moving a work between press dies for press work setup and a plurality of small work press dies. The purpose is to:

[Means for solving the problem]

 The above object is achieved by the following two inventions.

(I) The invention of claim 1 is a press apparatus for press-forming various types of parts from a large part to a small part consisting of a plurality of steps by a single press machine, and loads a work to be formed into the press apparatus. A large workpiece supply device and a small workpiece supply device, and a plurality of small workpiece press dies that are arranged in series in the press device in a replaceable manner with the press die and the press die for molding a large workpiece,
A transfer device which is arranged to be interchangeable with the large work supply device, and which transfers a plurality of small works almost simultaneously formed by the plurality of small work press dies to the adjacent small press dies in a process order in a sequential feed. When,
The apparatus includes a large work unloading device and a small work unloading device for unloading the work that has been press-formed out of the press device.

When forming a large work, the transfer device moves to the retreat position and replaces the transfer device, and the large work supply device moves to the work position. When forming a small work, the large work supply device is retracted. The transfer device moves to a work position and replaces the large work supply device, and the transfer device moves to a work position.

(Ii) In the invention of claim 2, instead of separately providing the large work unloading device and the small work unloading device in the invention of claim 1, there is provided a single work unloading device which also serves as these.
This single work unloading device is configured to be movable so that it can move between a large work unloading position and a small work unloading position.

(Operation)

(I) According to the first aspect of the present invention, since the large work press die and the small work press die are provided so as to be interchangeable with this press die, even if a change occurs in the production plan ... Never do.

(Ii) Since the large workpiece supply device and the transfer device are configured to be movable, it is easy to change the production plan when changing the production plan from large components to small components or in the opposite direction.

(Iii) According to the second aspect of the present invention, the equipment cost of the unloading device can be reduced, and the setup can be easily changed when the production plan is changed.

〔Example〕

 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIGS. 1 and 2 show the structure of a press apparatus 1 for processing a large workpiece 2 (for example, a side panel outer, a rear floor, a roof panel, etc., which are large components constituting an automobile body). FIG. 4 shows the structure of a press device 1a for processing a small work 3 (for example, a dashboard upper, a rear panel, etc., which are small parts constituting an automobile body). The common part between the two is a part of the press body 4 composed of FIGS. 2 and 3 (indicated by a two-dot chain line), and an automatic part which is fixed to the part and protrudes to the supply side or the discharge side of the press body 4. Set machine 5,6,
And mounting plates 11 and 8 for supporting the upper and lower dies 9 for the large workpiece 2 and various upper dies for the small workpiece 3 to be described later, and the mounting plate 11 for vertically moving the same. The cylinder mechanism 12 is exemplified.

In FIG. 1, the work supply device 13 comprises a work supply conveyor 14, an arm 15 held by the holder 7, and the like. The work supply conveyor 14 is equipped with a large blank 16 and
It comprises a conveyor section 17 for introducing this into the press device 1 and a leg section 19 for movably supporting the conveyor section with casters 18. As described above, one end of the arm 15 is held by the holder 7 so as to be able to move back and forth, and the other end is provided with a vacuum cam coupler 20 which is attracted and engaged with the large blank 16. An upper die supported by the mounting plate 11 in the press device 1,
The lower die 10 on which the large blank 16 is mounted is provided at a position facing each other.

The work unloading device 21 includes a work unloading conveyor 22 and a holder 8
And an arm 23 held by the arm. The work unloading conveyer 22 has a large blank 16 mounted thereon, and a conveyer section 24 for unloading the large blank 16 out of the press device 1 and a caster 25.
And is configured to include a leg 26 that is movably supported. One end of the arm 23 is held by the holder 8, and the other end is provided with a vacuum coupler 27 that engages with the large workpiece 2 by suction.

Next, FIG. 3 and FIG. 4 show a press device 1a for processing the small workpiece 3.

First, the work supply device 13 shown in FIG. 1 is moved, and the transfer device 28 having the casters 58 is positioned at this position. In the case of the present embodiment, four arms 29, 30, 31, and 32 branch from the base tube 33 and are extended and supported by the transfer device 28. Vacuum couplers 34, 35, 36, and 37 are provided on the arms 29, 30, 31, 32, and the like, respectively. Replacement with upper die 9 and lower die 10 for large workpiece 2 and positioning jig
38, the draw mold 39, the trim mold 40, the piercing mold 41, and the dispensing jig 42 are arranged at substantially equal intervals, and the pitch between them is formed of the same dimension as the pitch of the arm 29 or the like. At positions facing the draw mold 39, the trim mold 40, and the pierce mold 41, these upper molds (not shown) are arranged to face each other.

The small object blank 43 introduced on the positioning jig 38 is sequentially formed into a dry molded product 44, a trim molded product 45, and a pierce molded product 46, and is finally formed on the dispensing jig 42 into the small work 3.

The work supply device 47 includes a trolley (or pallet) 48 for loading and storing a plurality of small object blanks 43, a work suction device 49, a roller conveyor 50 for introducing the small object blank 43 into a positioning jig 38 in the press device 1a, and the like. It is composed of The work suction device 49 includes a cylinder mechanism 51 supported on the press body 4 side and a magnet conveyor 52.
The small blanks 43 in the contact 48 are formed so as to be brought into contact with each other and to be introduced one by one into the roller conveyor 50 side. The small object blank 43 slides on the roller 53 of the inclined roller conveyor 50, is introduced into the positioning jig 38, and has its stopper 54
Is positioned.

The work unloading device 55 is moved to a position where the arm 56 supported at one end by the automatic setting machine 6 and extending toward the payout jig 42 and the work transfer device 21 (for the large work 2) are arranged in series with the payout jig 42. The arm 56 is provided with a vacuum coupler 57 at the other end.

 Next, the operation of the present embodiment will be described in more detail.

First, the case of forming the large workpiece 2 will be described. The mechanism arrangement in this case is as shown in FIG. 1 and FIG.

Large blanks transported by the work supply device 13
16 is attracted to the vacuum coupler 20 of the arm 15 and is mounted on the lower mold 10 in the press device 1 by the movement of the holder 7. After the arm 15 has escaped from the position of the lower mold 10, predetermined press work, for example, drawing, trimming, or piercing is performed by the upper mold 9. After the processing is completed, the large work 2 on the lower die 10 is sucked by the vacuum coupler 27 of the arm 23 supported by the holder 8, placed on the work unloading conveyor 22 of the work unloading device 21, and unloaded to the next process side. I do.

 Next, a case where the small workpiece 3 is pressed will be described.

As described above, the work supply device 13 is moved, the arm 15 is removed, and the transfer device 28 is moved to a predetermined position and positioned. Since the transfer device 28 is also provided with the casters 58, the exchange is easily performed. The upper mold 9 and the lower mold 10 are removed, and the positioning jig 38, the draw mold 39, the trim mold 40, the piercing mold 41, and the dispensing jig 42 are arranged at a predetermined pitch interval as described above. The work supply device 47 is set (the work supply device 47 may be set at this position in advance), and the work unloading device 21a is moved to a predetermined position. The arm 23 is replaced with an arm 56.

After the completion of the above setup change, the small object blank 43 in the carriage 48 is suctioned and taken out by the work suction device 49 as described above, and is positioned and mounted on the positioning jig 38 via the roller conveyor 50. Next, as shown in FIG.
The arms 29, 30, 31, and 32 are moved from the position shown by the solid line in FIG. 3 to the position shown by the imaginary line in FIG.
Move 1,32 to the position between the molds (indicated by the two-dot chain line) that does not hinder press working. Here, each press working is performed simultaneously. Next, the arm 29 and the like are returned to their original positions, and the molded product press-formed by each press die is moved to the next process side. As described above, the small object blank 43 introduced on the positioning jig 38 is sequentially fed onto the dispensing jig 42 as the small object work 3 as a finished product. Fig. 6 shows a small object blank 3 mounted on the draw mold 39.
This shows the positional relationship between 9 'and the upper mold 39 "for draw-molding the same, and also shows a state where the small work 3 formed up to the final step is mounted on the work carrying-out conveyor 22 by the arm 56. As described above. The small object blanks 49 are sequentially pressed to form the small object work 3 and are carried out to the next process side.

As described above, the press device 1 that presses the large work 2 can be changed to the press device 1a that processes the small work 3 in a plurality of steps. In addition, as described above, the changeover of the mold is possible only by changing the transfer device 28 except for the changeover of the mold. Therefore, the press device 1 having the capacity for the large work 2 can be replaced with the press device 1a for the small work 3 if necessary.
The operation rate can be improved. Further, by expanding the above configuration to a large number of press apparatuses, it is possible to press a work in multiple steps, and it is possible to configure a flexible press layout. Thereby, the production efficiency can be greatly improved.

In the present embodiment, the pressing process of the small workpiece 3 is performed in three steps for convenience of explanation, but is not limited to this. Further, the changeover between the upper dies 9, 10 and each of the small workpieces 3 is not described in detail, but can be easily performed by a known automatic exchange technique.

〔The invention's effect〕

As apparent from the above description, according to the present invention,
With a press machine that processes large parts, small parts consisting of multiple processes can be pressed, setup change is performed in a short time, versatility and production efficiency are improved, and the operation rate of the equipment is greatly improved. be able to.

[Brief description of the drawings]

FIG. 1 is a plan view showing the structure of an embodiment when a large part is pressed, FIG. 2 is a top view of FIG. 1, and FIG. 3 shows the structure of the embodiment when a small part is pressed. FIG. 4 is a plan view, FIG. 4 is a side view taken along the arrow III in FIG. 3, and FIGS. 5 and 6 are explanatory side views for explaining the operation in the case of FIG. 1,1a ... Press device, 2 ... Large work, 3 ... Small work, 4 ... Press body, 5,6 ... Automatic setting machine, 7,8 ... Holder, 9 ... Upper mold, 10 ... … Lower die, 11… Mounting plate, 12,51… Cylinder mechanism, 13,47 …… Work supply device, 14 …… Work supply conveyor, 15,23,29,30,31,32,56 …… Arm , 16 …… Big block, 17,24 …… Conveyor part, 18,25,58 …… Caster, 19,26 …… Leg part, 20,27,34,35,36,37,57 …… Vacuum coupler, 21, 21a, 55… Work unloading device, 22… Work unloading conveyor, 28… Transfer device, 38… Positioning jig, 39… Draw type, 40… Trim type, 41… Pierce type, 42 …… Dispensing jig, 43 …… Small item blank, 44 …… Draw molded product, 45 …… Trim molded product, 46 …… Pierce molded product, 48 …… Dolly (or pallet), 49 …… Work suction device, 50 ...... Roller conveyor , 52: Magnet conveyor, 53: Roller, 54: Stopper.

Claims (2)

(57) [Claims] 1. A press machine for press-forming various kinds of parts from a large part to a small part consisting of a plurality of steps by a single press machine, wherein a large work supply for carrying a work to be formed into the press apparatus. An apparatus and a small workpiece supply device; a press die for molding a large workpiece; and a plurality of small workpiece press dies arranged in series in the press device in a process order so as to be interchangeable with the press die; and the large workpiece supply device. A transfer device arranged so that it can be exchanged with a plurality of small workpiece press dies, and the plurality of small workpiece press dies are formed almost simultaneously at the same time in a sequential order to the adjacent small press dies in a process order; A large work unloading device and a small work unloading device for unloading the completed work to the outside of the press device to form a large work When the transfer device moves to the retreat position, the large work supply device moves to the work position in place of the transfer device, and when forming a small work, the large work supply device moves to the retreat position, A press apparatus wherein the transfer apparatus moves to a work position in place of a large work supply apparatus. 2. A single work unloading device which is used as both a large work unloading device and a small work unloading device, wherein the work unloading device moves between a large work unloading position and a small work unloading position. The press apparatus according to claim 1, wherein the press apparatus is configured to be movable so as to obtain the press apparatus.