JPS6233039B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a die set changing device for a powder compacting press.

In general, efforts have been made to reduce the time required to replace die sets equipped with molds in order to improve the efficiency of powder molding presses. As an example, in the past, as shown in Fig. 4, simulators 13A and 13B were arranged on the left and right sides of the front of the press body A, and die sets _B1 and _B2 for mounting molds used in the press body A were placed at these positions. When the mold of one die set _B1 finishes molding in the press body A, the mold of the other die set B1, whose mold has been adjusted and repaired, is placed on standby so that it can be replaced.
_B2 is moved to the press main body A by the swingable arm 14B about the vertical shaft 15 as a fulcrum, and the time is reduced by replacing it with the die set _B1 , which was moved to one of the simulators 13A immediately before that. Ta.

However, in recent years, with the development of manufacturing technology for powder metallurgy products, the switch from casting and extrusion products to sintered parts has become active, and the products to be powder molded tend to gradually become larger. As a result, it has become extremely difficult to move and replace the arms 14A, 14B as described above, and as the die set has become larger, it has become difficult to move the die set in front of the press body A, or to move the simulators 13A, 13 at its left and right positions.
There was a problem in that adjusting the mold using B affected the powder molding work.

The present invention has been made to solve the above problems, and even if the die set becomes heavy and large, it can be moved and replaced to the press body easily and quickly, and it does not affect the powder compaction work. The object of the present invention is to provide a die set changing device for a powder compacting press that can improve efficiency without causing any problems.

Embodiments of the present invention will be described below based on the drawings.

First, to explain the structure, as shown in FIG. 1, on the rear surface of the press main body A, there is a bolster 1 with a predetermined depth and length, which is provided with float-type rollers 1a on both sides of the inside for mounting and conveying the die set. It extends in a protruding shape that communicates with the molding part at the same level,
On the ground at the rear end of the bolster 1, two parallel rails 2 are laid at right angles to the bolster 1.

Next, on the parallel rail 2, there are fitting recesses 3a and 3b with rollers that match the inside of the bolster 1.
A die set transport vehicle driven by a hydraulic cylinder is provided with holes 3c that communicate with the outside from the bottom at the bottom of each of the recesses 3a and 3b, and wheels 3d at the lower ends on all sides. 3 are arranged so that they can run freely left and right.

Under the ground between the parallel rails 2, there is a fluid cylinder 4 of the same shape with a flange portion 4C attached to the upper end.
A and 4B are buried at specified intervals as described later, and are capable of being raised and lowered from the ground.

In other words, as shown in FIG.
The other fluid cylinder 4B is buried directly below where the other fitting recess 3b is located when the one fitting recess 3a matches the bolster 1, and similarly, the one fitting recess 3b matches the bolster 1. One fluid cylinder 4A is buried directly below where the fitting recess 3a is located.

Furthermore, as shown in FIGS. 2 and 3, each flange portion 4C of the fluid cylinders 4A, 4B is formed so that one of the four opposing sides is narrow and the other two opposing sides are wide. Although not shown, the flange portion 4C is configured to be capable of forward and reverse rotation of 90 degrees by mechanical combination in the fluid cylinders 4A and 4B, such as engagement of a worm wheel and a worm driven by a motor.

In addition, on the central extension line of the bolster 1 beyond the parallel rail 2, a hydraulic cylinder 6 for pushing and pulling the die set is mounted horizontally toward the bolster 1 side by being supported by a stand 5.

Furthermore, columns 7 of a predetermined length are erected at rear positions on both sides of the press body A beyond the parallel rails 2.
After each support 7 and both sides of the press body A are connected by a cross member 7a, a single track rail 8 is installed between both the cross members 7a so as to coincide with the center zone of the ground parallel rail 2, A hoist 9 is movably suspended from this.

Next, the action will be explained.

First, two sets of die sets B ₁ and B ₂ each equipped with a different type of mold for powder molding are individually placed in each of the fitting recesses 3a and 3b of the carrier 3, and then one of the fitting recesses 3a is When one die set B 1 is placed on the bolster 1 by pushing out the hydraulic cylinder ₆ in alignment with the bolster 1, the fixing plate 10 of the die set B ₁ is transferred from the roller of the recess 3a to the roller 1a of the bolster 1. In order to
B ₁ can be easily transported to the powder forming position of the press body 1.

At this time, the other fitting recess 3b of the transport vehicle 3 matches the position directly above the other fluid cylinder 4B, so that while the one die set B ₁ is in use, the mold adjustment of the other die set B ₂ can be carried out. .

That is, the hoist 9 is connected to the upper lifting plate 12 of the die set _B2 , and the other flange portion 4C enters the fitting recess 3b from the hole 3c by lifting the fluid cylinder 4B, and lifts the die set.
When it is fitted into the long groove 11a provided in the lower pull-down plate 11 of _B2 as shown in FIG. As shown in FIG.
Connected to B. In this case, although not shown, the fixing plate 10 is temporarily fixed by pressing engagement with a stopper or the like on the upper surface of the truck 3.

Therefore, the die set _B2 can be tested on the carrier 3 by operating the hoist 9 and the fluid cylinder 4B, and the mold can be adjusted.

Next, when the one die set B ₁ in use needs to be replaced due to the completion of molding, the die set B 1 is released from its fixation at the molding position and pulled backward by the hydraulic cylinder ₆ of the stand 5.
The fixed plate 10 of the roller 1 of the bolster 1
a, moves backward, and is conveyed into one fitting recess 3a of the truck 3, which matches the bolster 1.

At this point, move the trolley 3 to the right, align the other fitting recess 3b with the bolster 1, and use the extrusion operation of the hydraulic cylinder 6 to insert the other die set _B2 whose mold has been adjusted and checked. By moving and transporting the die set into the bolster 1, the die set can be replaced easily and quickly.

Of course, at this time, one fitting recess 3a of the truck 3 is located above one fluid cylinder 4A, so by moving the hoist 9 to this upper space,
In the same way as described above, the mold adjustment of die set _B1 can be carried out on cart 3.

As explained above, the present invention has a press body A
A bolster 1 is provided in a protruding manner at the rear of the support 1, and a parallel rail 2 is laid at the end position of the support vehicle 3, so that a carrier 3 capable of accommodating two sets of die sets is arranged so as to be able to move left and right, and the parallel rail 2 is separated. A hydraulic cylinder 6 for pushing and pulling the die set is disposed on the central extension line of the bolster 1, and two hydraulic cylinders are disposed between the parallel rails 2.
The main fluid cylinders 4A and 4B are buried, and the hoist 9 is arranged so that it can be moved and shared on the single track rail 8 installed above the cylinders, so that all of the equipment is placed on the rear side of the press body A, saving space. Since there is no waste, powder molding work can be carried out smoothly and efficiency can be improved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a die set changing device for a powder compacting press according to the present invention, FIG. A cross-sectional bottom view of the same part, Fig. 3a is a front view showing the state in which the flange part is engaged with the die set by rotation, and Fig. 3b
4 is a cross-sectional bottom view of the same part, and FIG. 4 is a schematic plan view showing a die set changing device for a powder compacting press in a conventional example. Explanation of symbols: 1...Bolster, 1a...Roller, 2...Parallel rail, 3...Die set carrier, 3a, 3b...Fitting recess, 3c...Hole,
3d...Wheel, 4A, 4B...Fluid cylinder,
4c...Flange section, 5...Stand, 6...Hydraulic cylinder, 7...Strut, 7a...Horizontal member, 8...Single track rail, 9...Hoist, 10...Fixing plate, 11...Lowering Plate, 11a...long groove,
12...Lifting plate, 13A, 13B...Simulator, 14A, 14B...Arm, 15
... Vertical axis, A ... Press body, B ₁ , B ₂ ... Die set.

Claims (1)

[Claims] 1. A bolster is provided in a protruding manner at the rear of the press body, and a die set carriage with two sets of fitting recesses provided at intervals is arranged at the end position of the bolster so that it can move left and right, and the bolster extends beyond the carriage movement path. A fluid cylinder is installed facing the bolster side on the center extension line supported by a stand, and the fluid cylinder is buried in two places on the left and right at the end of the trolley moving path so that it can be raised and lowered, and it is placed in the air above the trolley moving path. is a die set changing device for a powder forming press, characterized by a hoist suspended so as to be movable left and right.