JPH0910867A - Work transferring method for multistage press machine - Google Patents

Abstract

PURPOSE: To unnecessitate the stop of operation of a slide for moving a work by installing a front and rear transferring means to take out the work at the work taking out position set on the front or the back of the slide each slide. CONSTITUTION: In a multistage press machine 1, a work W is machined having the difference of phase in work machining positions 11a to 11c. The work W is transferred to a work supplying position Pi1 with a right and left transferring means 21A. The work W is transferred to a machining position 11a matching to the timing of slide with a for and back transferring means 31A. After pressing, the work W is transferred to a work taking-out position Pc1 matching to the timing of slide with the fore and back transferring means 31A. The work W is transferred to the work supplying position Pi2 of the next process with a right and left transferring means 21AB. The work W is transferred to the machining position 11b with the force and back transferring means 31B. Transferring and machining are executed successively like the same. The continuous operation of the press machine can be executed, and the productivity is improved largely.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work transfer method for a multi-step press machine in which a plurality of slides operating with a phase difference are arranged in the left-right direction of the press machine.

[0002]

2. Description of the Related Art FIGS. 4A and 4B show the overall structure of a multi-step press machine 1. The multi-step press machine 1 has a plurality of work processing parts [for example, first, second, and third work processing parts (10A, 10B, 10C)], and a work transfer means (not shown).

Each work processing part (10A, 10B, 10
As shown in FIG. 4 (A), C) is a plurality of slides (12) arranged in the left-right direction on the frame 2 of the press machine 1.
A, 12B, 12C) and a mold part (not shown). Each slide (12A, 12B, 12C) has an arbitrary phase difference (for example, a phase angle of 30) as shown in FIG.
Is connected to the crankshaft 18 so as to operate in sequence.

The crankshaft 18 includes a drive means 15 (a drive motor 16, a power transmission portion (pulley 17a, belt 17b,
Flywheel 17c, clutch 17d, brake 17
e))]. The mold part is an upper mold attached to each slide (12A, 12B, 12C),
It is formed from each lower mold attached to the bolster 3 corresponding to each upper mold.

Further, the work transfer means is equipped with slides (1
2A, 12B, 12C) processing positions (11a, 11b,
11c) is a means for sequentially feeding the work, and is formed of, for example, a three-dimensional transfer feeder or the like.

Therefore, when the drive means 15 is driven to rotate the crankshaft 18, the slides (12A, 12A) are rotated.
(B, 12C) each have a phase difference and operate in sequence, and perform a predetermined press working on the work sequentially fed to the processing positions (11a, 11b, 11c) of the slides (12A, 12B, 12C). To do.

[0007]

By the way, in the above-described multi-step press machine 1, each slide (12A, 12B,
12C) has a phase difference and operates in sequence, so press 1
Pressing time in the cycle becomes long.

Therefore, one processing position (for example, 11
Since it takes less time to convey the work, which has been subjected to the predetermined press working in a), to the next working position (11b), conventionally, all slides (12A, 12A) are finished after one press cycle is completed.
(B, 12C) is temporarily stopped to transfer the work, and after the transfer is completed, each slide (12A, 12B, 12C) is transferred.
Intermittent operation to restart C) is performed.

However, in such an intermittent operation, it is practically impossible to meet the current demand for high-speed press working.
There is a strong demand for the development of a work transfer method that allows continuous operation.

Also, the individual slides (12A, 12B,
12C) is required to develop a technique capable of performing independent press working.

In view of the above circumstances, it is an object of the present invention to provide a work transfer method for a multi-step press machine which can be continuously operated without stopping the operation of each slide to significantly improve the productivity. To do. It is another object of the present invention to provide a work transfer method for a multi-step press machine that can perform independent press working using individual slides.

[0012]

According to a first aspect of the present invention, a plurality of slides operating with a phase difference are provided for each slide of a multi-step press machine in which the slides are arranged in the left-right direction of the press machine. In the work transfer method of the multi-step press machine, which is configured to supply the work by the work transfer means to the designated processing position, and to perform the predetermined press processing and then take out, in the press machine according to the operation timing of each slide. For each slide, there is a front / rear conveying means that supplies the work from the work supply position provided before or after each slide to the processing position, and after press processing, takes out the work to the work extraction position provided after or before the slide in the press machine. Each of them is provided, and the work is conveyed for each slide to perform the press work.

According to a second aspect of the present invention, in a multi-step press machine in which a plurality of slides operating with a phase difference are arranged in the left and right direction of the press machine, a processing position is provided for each slide. In a work transfer method of a multi-step press machine configured to supply a work by a work transfer means and take it out after predetermined press working, according to the operation timing of each slide, before or after each slide in the press machine Each slide is provided with front and rear conveying means for receiving the work at the provided work supply position, supplying the work to the working position, and for taking out the work at the work taking-out position provided after or before the slide in the press machine after the press working. , The work is conveyed from the outside of the press machine in the left and right direction by using the external work supply means, is supplied to the first work supply position, and is conveyed left and right. Conveying the receiving the workpiece the workpiece at the work take-out position in the press machine in the lateral direction is supplied to the work supply position of the front and rear conveying means next with reference to stage,
The work is sequentially and repeatedly conveyed to the processing position of the last slide, and further, an external work discharging means for taking the work out of the last work taking-out position to the outside of the press machine is provided, and the work is successively conveyed to a plurality of adjacent slides. Press work.

According to a third aspect of the present invention, in a multi-step press machine in which a plurality of slides that operate with a phase difference are arranged in the left-right direction of the press machine, a machining position is provided for each slide, In a work transfer method of a multi-step press machine configured to supply a work by a work transfer means and take it out after predetermined press working, according to the operation timing of each slide, before or after each slide in the press machine Each slide is provided with front and rear conveying means for receiving the work at the provided work supply position, supplying the work to the working position, and for taking out the work at the work taking-out position provided after or before the slide in the press machine after the press working. , The work is conveyed from the outside of the press machine in the front-rear direction by using the external front-rear conveying means and is supplied to the work supply position,
The work is received at the work taking-out position by using the external left and right carrying means, carried in the left-right direction and taken out to the outside of the press machine, and the work is carried for each slide for press work.

[0015]

According to the first aspect of the present invention having the above-described structure, the front and rear conveying means provided for each slide are used to allow the work to be moved from each work supply position to the front (or the front) of the press machine in accordance with the operation timing of the slide. To the rear) direction,
Each is supplied to the corresponding processing position.

Then, the work is subjected to a predetermined press working at each working position and then taken out to each work taking-out position.

When the taken-out work is supplied to the work supply position of the adjacent front-rear transfer means by using an appropriate transfer means, the front-rear transfer means moves the work to the processing position in accordance with the operation timing of the adjacent slide. Supplied,
After the predetermined press working, the work is taken out to the work taking-out position.

As a result, the productivity can be greatly improved by continuously operating the slides without stopping the operation.

Further, for example, by using the front / rear conveying means provided corresponding to an arbitrary slide, the work is conveyed from the work supply position in the front (or rear) direction in accordance with the operation timing of the slide to correspond to the slide. Supply to the processing position. Then, the work is subjected to a predetermined press working at the working position and then taken out to the take-out position.

Thus, the work can be pressed using any slide independently of the other slides.

It is also possible to use a plurality of slides and simultaneously carry out predetermined press workings.

According to the invention of claim 2 having the above-mentioned structure, the work is automatically supplied to the first work supply position from the outside of the press machine by using the external work supply means. And
The works carried by the front-rear carrying means to the respective work taking-out positions are carried in the left and right directions of the press machine by the left and right carrying means, respectively, and supplied to the adjacent work taking-out positions. The work carried to the last work take-out position is
It is discharged to the outside of the press machine by the external work discharge means.

Therefore, the continuous operation can be performed more rapidly without stopping the operation of each slide, and the productivity can be further improved.

According to the third aspect of the present invention having the above-mentioned structure, the work can be automatically supplied to each work supply position from the outside of the press machine by using each external front-back conveyance means, or the work can be picked up from each work removal position. It can be automatically taken out of the press machine.

Therefore, independent press working can be performed more rapidly and reliably using each slide.

[0026]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a work transfer method for a multi-step press machine according to the present invention. A method of transferring a work of a multi-step press machine according to claim 2 is shown in FIG. 1, and a method of transferring a work of a multi-step press machine according to claim 3 is shown in FIG. A multi-step press machine (1) for carrying out this work transfer method is the same as that shown in FIG.

1 and 4, the multi-step press machine 1 includes a plurality (for example, two) of left and right conveying means (21A).
B, 21BC) and a plurality of (for example, three) front and rear transporting means (31A, 31B, 31C), and the first, second,
The slides (12A, 12B, 12C) of the third work processing section (10A, 10B, 10C) can be continuously pressed without stopping.

First, the front and rear transporting means (31A, 31B,
31C) is a front-rear direction conveyance path (35A, 35B, 3) that passes through the processing position (11a, 11b, 11c) of each slide (12A, 12B, 12C) and intersects the processing position center 9.
5C), and the work W is conveyed along the processing position (11a, 11) in the press machine 1 in accordance with the operation timing of each slide (12A, 12B, 12C).
b, 11c), the workpiece supply position (Pi1, P1)
i3) and the work W is supplied to the work supply position (Pi2) provided later, and after the press working, the work take-out position (Pc1, Pc3) provided after the working position (11a, 11b, 11c) in the press machine 1 and. The work W can be taken out at the work taking-out position (Pc2) provided in front.

In the first embodiment shown in FIG. 1, the front-rear transfer means (31A, 31B, 31C) are three-dimensional transfer capable of transferring the work W along the front-rear direction transfer paths (35A, 35B, 35C). It is composed of a feeder and the like.

Then, the front-rear transport path (35A, 35
In the work take-out position (Pc1, Pc2) of B), the work W is conveyed in the left-right direction conveyance path (25AB, 25BC) described later.
It is configured to be transferable to. In this embodiment, the workpiece take-out positions (Pc1, Pc2) are provided so as to be point-symmetric with respect to the machining position center 9.

Incidentally, in FIG. 1, front and rear transport means (31B, 3)
1C) is simply shown. In addition, each of the front and rear transport means (3
1A, 31B, 31C) may be formed by a work transfer robot having a function equivalent to that of a two-dimensional transfer feeder or a three-dimensional transfer feeder (all are not shown).

The left and right conveying means 21AB (21BC) are provided at respective processing positions (11) at the rear (front) of the multi-step press machine 1.
a, 11b, 11c), and the front-rear transport path (3
5A, 35B) [(35B, 35C)] is used to convey the work W by using the left-right direction conveyance path 25AB (25BC) intersecting with the next front-rear direction conveyance path 35B (35C). Has been done.

In the first embodiment, the left and right conveying means (21A
B and 21BC) are formed of tact conveyors capable of tact conveying the work W in parallel with the machining position center 9.
The left and right transfer means (21AB, 21BC) may be formed by a work transfer robot having a function equivalent to that of a tact conveyor.

The left and right conveying means (21AB, 21BC) are provided at the work receiving position Pi1 of the front and rear conveying path 35A.
The work W is configured to be transported by the external work supply means 21A having the same function as the above using the lateral transport path 25A.

When press working is performed using the multi-step press machine, each slide (12A, 12B, 12) is pressed.
Work piece W is formed at each processing position (11a, 11b, 11c) of (C) by using each of the front-rear transfer means (31A, 31B, 31C).
Are supplied according to the operation timing of each slide (12A, 12B, 12C).

The work W, which has been subjected to a predetermined press working at the working position 11a (11b), has a front-rear transport path 35A (3).
5B) when it reaches the work take-out position Pc1 (Pc2), it is transferred to the left-right direction conveyance path 25AB (25BC), and the next front-back direction conveyance path 35B (on the downstream side using the left-right direction conveyance path 25AB (25BC)). It is conveyed until it reaches the workpiece supply position Pi2 (Pi3) of 35C).

The work W is supplied to the work supply position Pi.
At 2 (Pi3), it is transferred to the front-rear direction conveyance path 35B (35C) and conveyed so that it can be supplied to the processing position 11b (11c) at the operation timing of the slide 12B (12C).

The work W, which has been subjected to the predetermined press working at the working position 11c, is delivered to the outer work discharging means 36'C when it reaches the work take-out position Pc3, and is carried along the outer front-rear direction carrying path 37c, It is taken out from its outer end.

Accordingly, each slide (12A, 12
The work W can be continuously pressed without stopping the operation of (B, 12C).

As a second embodiment, as shown in FIG.
In the multi-step press machine 1 shown in FIG.
By adding A, 36'B, 36'C) or the like, the work W can be taken out in the middle of processing, subjected to a predetermined processing, and then input again to continue the press processing.

External front and rear transport means (36'A, 36'C)
Is the work W at the work take-out position (Pc1, Pc3)
And the work W is conveyed to the external front-rear direction conveyance path (37
a, 37c), and is configured by a two-dimensional transfer feeder that can be conveyed in the front-rear direction (in this embodiment, the rear direction of the press machine 1) and taken out of the press machine 1.

Further, the external front-rear transfer means 36'B transfers the work W introduced from the outer end portion of the external front-rear direction transfer path 37b in the front-back direction of the press machine 1 (in this embodiment, the front direction of the press machine 1). It is composed of a two-dimensional transfer feeder that can be conveyed and supplied to the work supply position Pi2.

Incidentally, each external front-back transport means (36'A, 3 '
6'B, 36'C) may be composed of a three-dimensional transfer feeder or a work transfer robot having the same function as the above-mentioned two-dimensional transfer feeder.

With the above configuration, the work W is moved to the machining position 1
After machining at 1a, the workpiece W is taken out and subjected to a predetermined treatment (for example, annealing / lubrication treatment), and then the workpiece W which has been subjected to the predetermined treatment is re-introduced from the outer end portion of the external front-rear direction conveyance path 37b. It can be supplied to the processing position 11c, subjected to predetermined press working, and taken out from the outer end portion of the external front-rear direction conveyance path 37c.

As a third embodiment, as shown in FIG.
The multi-step press machine 1 shown in FIG.
(31B, 31C), while changing the work transfer mode, and adding external front-back transfer means (36A, 36B, 36C) and external left-right transfer means (21'A, 21'BC), etc. 10A, 10B, 1
It is also possible to perform independent press processing by setting 0C) as one press machine 1.

That is, the front and rear transport means (31A, 31
B, 31C) is a slide (12A, 12B, 12C)
According to the operation timing of the work supply positions (P'i1, P'i) provided before or after (here, after) the processing positions (11a, 11b, 11c) in the press machine 1.
2, P'i3) receives the work W and supplies the work W to the processing positions (11a, 11b, 11c), and after the press working, the working positions (11a, 11b, 11c) in the press machine 1 are processed.
c) Work W at the work take-out position (P'c1, P'c2, P'c3) provided before or after (here, in front).
Is configured to be removable.

External front-rear transport means (36A, 36B, 36
C) conveys the work W from the outside of the press machine 1 in the front-rear direction of the press machine 1 and supplies the work supply position (P'i1,
P'i2, P'i3).

In the third embodiment, the external front-back transport means (36
A, 36B, 36C) are the corresponding front-rear transport paths (3
5A, 35B, 35C) and external front-rear direction conveyance paths (37a, 37b, 37c), and the conveyance path (3
7a, 37b, 37c) work W introduced from the outer end
Is composed of a two-dimensional transfer feeder capable of carrying the slides (12A, 12B, 12C) in the front-rear direction according to the operation timing of the slides (12A, 12B, 12C). It may be configured by a three-dimensional transfer feeder, a work transfer robot, or the like having the same function.

External left and right conveying means (21'A, 21'B
C) is the work take-out position [P'c1, (P'c2,
P'c3)] receives the work W, conveys the work W in the left-right direction of the press machine 1, and takes it out of the press machine 1. In this embodiment, the external left-right conveying means (21'A, 21'BC) are external left-right conveying paths (25A, 25B) extending in the left-right direction of the press machine 1.
C), and the work take-out position [P'c1, (P'c2, P'c
The work W received in 3)] is formed so that it can be taken out of the press machine 1.

With the above configuration, each work processing part (10
(A, 10B, 10C) slides (12A, 12B, 1
2C) is used to continuously perform independent press working, and the worked work W is processed in a predetermined direction [processing position 11a].
The workpiece W machined at is leftward in FIG.
The work W processed in b, 11c) can be discharged in the right direction in the drawing].

[0051]

According to the invention of claim 1, the work is conveyed in the front-rear direction of the press machine according to the operation timing of each slide and supplied to each processing position, and after the press processing,
Since the work is taken out at each work taking-out position, the productivity can be greatly improved by continuously operating the slides without stopping the operation. Also, press work can be performed independently using each slide.

According to the second aspect of the present invention, the supply of the work to the first work supply position, the work transfer between the adjacent front and rear transfer means, and the external discharge of the work from the last work take-out position are respectively performed. Since it is automatically performed by using the supplying means, the left and right conveying means, and the external work discharging means, the productivity can be significantly improved by continuously operating the slides without stopping the operation.

According to the third aspect of the present invention, the work is supplied to each work supply position and the work is externally taken out from each work take-out position by using the external front-rear transfer means and the external left-right transfer means. The press work can be performed more quickly and reliably independently using each slide.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining a first embodiment of the present invention.

FIG. 2 is a diagram for explaining a second embodiment of the present invention.

FIG. 3 is a diagram for explaining a third embodiment of the present invention.

FIG. 4 is a diagram for explaining a work transfer method of a conventional multi-step press machine.

FIG. 5 is also a diagram for explaining the operating state of each slide.

[Explanation of symbols]

1 Multi-step press machine 2 Frame 3 Bolster 9 Machining position center 10A, 10B, 10C 1st, 2nd, 3rd workpiece machining parts 11a, 11b, 11c Machining position 12A, 12B, 12C Slide 21A External workpiece supply means 21AB, 21BC Left and right conveying means 21'A, 21'BC External left and right conveying means 31A, 31B, 31C Front-rear conveying means 36A, 36B, 36C External front-rear conveying means 36'C External work discharging means W work

Claims (3)

[Claims] 1. A work transfer means at a machining position provided for each slide of a multi-step press machine in which a plurality of slides operating with a phase difference are arranged in the left-right direction of the press machine. Supply, after the predetermined press processing,
In the work transfer method of a multi-step press machine configured to take out, in accordance with the operation timing of each slide, the work is supplied from the work supply position provided before or after each slide in the press machine to the processing position, and the press is performed. In the post-processing press machine, front and rear transportation means for taking out the work is provided for each slide at a work taking-out position provided after or before the slide, and the work is conveyed for each slide to perform the press work. Work transfer method for press machine. 2. A work transfer means at a processing position provided for each slide of a multi-step press machine in which a plurality of slides operating with a phase difference are arranged in the left-right direction of the press machine. Supply, after the predetermined press processing,
In a work transfer method of a multi-step press machine configured to take out, in accordance with the operation timing of each slide, the work is received at a work supply position provided before or after each slide in the press machine and the work is moved to a processing position. After the press processing, each slide is equipped with a front-back conveyance means for taking out the work at the work taking-out position provided after or before the slide in the press machine, and the work is supplied from the outside of the press machine using the external work supply means. The work is fed in the left-right direction and fed to the first work feeding position, and the work is picked up at the work taking-out position by using the left-right feeding means and fed in the left-right direction in the press machine and the work feeding position of the next front-back feeding means. To the processing position of the last slide, the workpieces are repeatedly conveyed to the final slide processing position, and the last workpiece is taken out. A work transfer method for a multi-step press machine, comprising an external work discharge means for taking out a work from a position to the outside of the press machine, and sequentially transferring the work to a plurality of adjacent slides for press work. 3. A work transfer means at a processing position provided for each slide of a multi-step press machine in which a plurality of slides operating with a phase difference are arranged in the left-right direction of the press machine. Supply, after the predetermined press processing,
In a work transfer method of a multi-step press machine configured to take out, in accordance with the operation timing of each slide, the work is received at a work supply position provided before or after each slide in the press machine and the work is moved to a processing position. Each slide is equipped with a front-rear transporting means for feeding the work and for removing the work at the work-removing position provided after or before the slide in the press machine, and transports the work in the front-back direction from the outside of the press machine. Supply to the supply position, receive the work at the work take-out position using the external left and right conveying means, convey it to the left and right, and take it out of the press machine,
A work transfer method for a multi-step press machine, characterized in that a work is transferred for each slide and pressed.