JPH01266994A - Press line - Google Patents

Abstract

PURPOSE:To form the pressline having plural forming stages by one unit of a press main body by providing the die moving device moving plural dies to a forming position together with a die base and a feed bar at the right part of the press main body. CONSTITUTION:The die base 5 freely movable dy a die moving device 4 is provided at the upper side of a bolster 2. The die moving device 4 has a traverse frame 4a at almost the same height with the bolster 2 upper face at the right part of a press main body 1 and the die base 5 is freely movably mounted via a wheel on the guide rail 4b laid on this traverse frame 4a. The compression means of a disk spring, etc., is interposed between the wheel and die base 5 and when a pressurizing force is acted on the die base 5 at forming time, the compression means is compressed and the die base 5 is seated on the bolster 2.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a press line suitable for molding products with a small production volume.

[Conventional technology]

Traditionally, there are press lines that carry out the entire process from the loading of materials to the completion of products, such as tandem press lines and press lines that use transfer presses.

[Invention or problem to be solved]

However, the pressurizing capacity of any press line (total of each process)
There was a problem that it was not suitable for molding products with a small production volume because it was large and expensive.

This invention was made with the purpose of improving the above-mentioned problems, and is intended to provide a press line suitable for molding products of low production volume at a low cost.

[Means and effects for solving the problem] In order to achieve the above-mentioned objective 1, the present invention sequentially moves a plurality of molds installed in the press body on the right side of the press body together with a die base to a molding position. Equipped with a moving mold moving device and a feed bar that operates in three dimensions, the feeder device transports the workpiece to the molding position using the bracket feed bar, transfers it to the mold that is sequentially moved to the molding position, and completes molding. By providing a product transport means for transporting the product from the product transport position to the product discharge position, a press line having a plurality of molding processes can be configured with one press body.

〔Example〕

An embodiment of the present invention will be described in detail with reference to the drawings.

In the figure] is a press body, which has a slide 3 near the bolster 2 that is movable up and down by a slide drive mechanism (not shown).

On the negative side of the bolster 2, a die base 5 is provided which is movable by a die moving device 4.

The mold moving device 4 has a horizontal frame 4a on the right side of the press body at approximately the same height as the upper surface of the bolster 2, and a trunoid rail 4bJ2 installed on the horizontal frame 4a. A die base 5 is movably mounted on the die base 5 via a wheel (not shown), and compression means such as a disc spring is interposed between the wheel and the die base 5. When a pressurizing force is applied to the die base 5, the compression means is compressed and the die base 5 is seated on the holster 2.

Also, a support stand 4 that supports one end side of the secondary horizontal frame 4a.
A feed motor 6 made of a ZARHO motor is attached to c, and this feed motor 6 rotates a hole screw shaft 7 provided above and parallel to the guide rail 4b.

The hole screw shaft 7 is screwed with a nut portion 8c fixed to one end of the die cellar l-8 on the die base 5, and as the hole screw shaft 7 rotates, the nut portion 8c is screwed through the die cellar l-8. 1 3 - Base 5 is set to be moved.

The tie set 8 consists of a lower die set 8a provided on the die base 5 and a second die set 8b provided above the lower die set 8a. , such as a spring cylinder or an air cylinder (= 1 force means 9 is provided, and the upper die cera l-
The lower die set 8b is elastically supported, and the lower die set 8a and the second die set 8b are provided with a lower die 1 on opposing surfaces.
For example, three sets of molds 10 consisting of two molds 10a and 10b are set at equal intervals.

Also, mold changing devices 2 are installed on both sides of the mold moving device 4.

The above-mentioned mold exchange device] 2 is a mold exchange position above the horizontal frame 4a], and on both sides thereof, the mold 10 to be used next is prepared at a preparation position 1.2 b, and the mold 10 currently used is Each has a current mold take-out position 12C for taking out the mold 10, and a next mold tray (on the side of position iii position 12b, a mold exchange position]-2a is provided at the die base 5 stopped at the mold exchange position). The mold 10 lifted by the die lifter 5a is extruded to the current mold removal position 12c, and the mold 10 to be used next is extruded together with the die set 8 to the mold exchange position 12a. has been done.

Note that 12d and 12e in the figure indicate roller conveyors for facilitating the movement of the mold 10.

On the other hand, a feeder device 15 that operates in three dimensions is installed on the rear side of the brace main body 1.

The feeder device 15 has a pair of feed bars 16 in a direction perpendicular to the moving direction of the die base 5, and these feed bars 16 are provided in a clamp lift box 17 and are clamped by a clamp and lift mechanism (not shown). , in the unclamp direction and in the lift and down directions.

In addition, the rear end of each feed bar [6] is attached to the rear surface of the press body; the feed box [1] is located at the midpoint of the feet by a feed mechanism (not shown) provided in [8].
5, Advance End] 52, Return End] 53,
It is designed to be moved to four stages: a retreat position when replacing the mold and a product discharge position 154, and the feed bar 1
On the front end side of the fins 6, there are provided fins 6a and fins 6a, which clamp the workpiece 20 carried into the blank carrying position shown in FIG. 4, at positions facing each other. The workpiece 20 is moved to the lower mold 1 of the mold 10 which stops at the molding position as the feed bar 16 moves. It is carried onto Oa.

The completed product 20' that has gone through a predetermined molding process at the molding position is then moved by the product extrusion device 21 located on the side of the NO3 mold 10 when the Daicera l-8 is returned to its original position together with the die base 5. After being extruded from the mold 10, it is transported to a product discharge chute 23 at the rear of the press body 1 by a discharge conveyor 22 provided at a product discharge position.
This is a system in which the product is discharged outside the press body 1 via a product discharge chute 23.

Next, to explain the operation, the workpiece 20 carried into the blank supply position 19 is clamped by the fingers 16a of the feed bar 16 that moves three-dimensionally and is conveyed to the molding position, and the mold 10 waits at the molding position. lower mold 10
It is placed on a.

After that, the slide 3 is lowered from the top dead center position and the upper mold 1 is moved together with the second mold die set 8b. Press down the Ob and the upper mold of the NOI mold 10], Ob and the lower mold 1. The first molding of the workpiece 20 is performed during Oa, and when the upper die 10b rises with the rise of the slide 3, the feed bar 16, which was waiting below, clamps the workpiece 20 while rising. The workpiece 20 is raised to a position where it does not interfere with the workpiece 10.

Thereafter, the feed motor 6 or the pole screw shaft 7 is rotated to move the die set 8 together with the die base 5 one pitch to the right (see FIG. 2), and the NO2 mold 10 is set at the molding position.

Then, as the slide 3 descends, a second molding is performed using the NO2 mold 10, and once the molding is completed, the above operation is repeated again to set the NOB mold 10 to the molding position.
The third molding is performed using the mold 10, and when all the molding processes are completed, the feed bar 16 is moved to the product discharge position I5.
4, unclamp it, and transfer it to product discharge conveyor 2.
2 and then ejected from the chute 23, or alternatively, simultaneously return the die set 8 together with the die base 5 to the original position, knock out the product 20' from the NOB mold 0, and extrude the product installed on the side. The product is pushed out from inside the mold 10 to the product delivery position by the device 2].

Incidentally, a timing chart of the above operation is shown in FIG.

Thereafter, by repeating the above operations, it becomes possible to automatically perform continuous molding of the workpiece 20 over a plurality of steps using one press body 1.

On the other hand, when replacing the currently used mold]O with another mold 10, first move the feed bar 16 to the retracted position when replacing the mold]51, and then move the pole screw shaft using the feed motor 6. Center part automatically separated by rotating 7
Move the die base 5 along with 1 and 6a to the mold exchange position 1.28
Move up to.

Next, lift the die set 8 and the mold] 0 using the die lifter provided on the die base 5, and move it to the mold exchange position 111.
At the same time, the mold 10 to be used next, which is prepared at the blowing mold preparation position 12b, is extruded by the cylinder cylinder] 3 to the current mold removal position 1-2c, and the mold 10 to be used next is transferred to the die set 8, also known as the mold exchange position 1.
2a and set it on the die base 5.

Then, by carrying the die base 5 into the press body 1 and automatically connecting the central bar 1.6a, the mold 1-0 can be easily replaced.

〔Effect of the invention〕

As described in detail above, this invention can automatically and continuously perform a plurality of molding operations using one press body, so compared to the conventional press line configured with a plurality of presses, The press line can be constructed at low cost, and production costs can be significantly reduced when producing products in small quantities.

In addition, it is economical because the press line can be easily installed in a small space, and it is also easy to take out the product because the molded product is transported by the product transport means and discharged outside the press body. become.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and Fig. 1 is a plan view, Fig. 2 is a front view, Fig. 3 is a side view, Fig. 4 is a plan view of the vicinity of the product extrusion device, and Fig. 5 shows the operation. FIG. 1 is a press body, 4 is a mold moving device, 5 is a die base,
10 is a mold, 15 is a feeder device, 16 is a feed bar, and 21 is a product extrusion device. Applicant Komatsu Manufacturing Co., Ltd. Representative Patent Attorney Masaaki Yonehara Patent Attorney Hamamoto, 1st year;

Claims (2)

[Claims] (1) The mold moving device 4 is installed on the right side of the press body 1 and moves the plurality of molds 10 provided inside the press body 1 sequentially to the molding position together with the die base 5, and operates in three dimensions. A feeder device 15 is equipped with a feed bar 16, and carries a work 20 to a molding position using the feed bar 16, and transfers the work 20 to the mold 10 that is sequentially moved to the molding position, and a feeder device 15 that transports a molded product 20'. The press line is equipped with a product conveyance means for conveying the product from the position to the discharge position and discharging the product from the product discharge chute 23 to the outside of the press body 1. (2) The press line according to claim 1, further comprising a product extrusion device 21 installed near the product transport position for extruding the molded product 20' from within the mold 10 to the product transport position.