JPS5849141Y2 - Mold lifting device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mold elevating device used when replacing a mold in a press machine.

In general, press machines are equipped with various types of molds depending on the material to be processed, and it is necessary to replace the molds each time.

When pressing with a press machine, the mold is placed on a platform called a bolster that is horizontal to the press machine.

When attaching a mold to a bolster, a plurality of T-grooves are usually bored in the bolster, and the mold is fixed by being hooked into the T-grooves.

On the other hand, when installing another ρ mold on this bolster, it is necessary to replace the mold, and in this case, another groove is formed in the bolster in addition to the T-groove that supports the mold, and this After inserting the rail into the groove, the rail is raised and lowered to take in and out the mold.

That is, when replacing the mold, a rail is raised above the bolster surface, and the mold is slid in and out of the press machine via this rail.

Further, when a mold placed on the bolster is fixed on the bolster via this rail, the rail is lowered.

Furthermore, the lifting and lowering of the rails has conventionally been carried out using a cam mechanism installed in the press machine.

However, in the above-mentioned conventional lifting device for mold exchange, in addition to the T groove that supports the mold, another groove into which the rail is inserted is used as a bolster.
It is very difficult to process.

In addition, conventionally, this rail was supported at two points at the tip and rear end, so when supporting the mold, the center of the rail would bend downward due to the weight of the mold, making it impossible to move it in and out when replacing the mold. There was a risk.

In addition, since a cam is used to raise and lower the rail, it is difficult to install and process the cam mechanism, and the number of parts is large, making adjustment very troublesome.

Therefore, an object of the present invention is to provide an elevating device that can fix a mold on a bolster, move the mold upward from the bolster, and remove it with a simple configuration and operation. In order to achieve this, the present invention has a structure in which a support plate is inserted into and taken out freely in a groove bored on the bolster, and a plurality of support members each having a tapered surface formed at one end extend upwardly on the support plate. A rail is provided in the groove above the support member and has a guide formed on its lower surface with a tapered surface opposite to the tapered surface and is formed to protrude downward and can be freely taken in and taken out. At the same time, a plurality of rollers are rotatably attached to the top of the rail, and when the rail is erected in the axial direction, the end of the rail is pressed to force it to slide, and when it falls over. A pushing plate that allows the rail to slide freely is rotatably attached to the bolster, and a plurality of rollers are rotatably attached to the top of the pushing plate. The top surface should be flush with the top surface, the desired mold can be placed on each roller, and when the pusher plate falls over, the support plate and the rail that slides on it should be placed in the groove on the bolster. It is an object of the present invention to provide a device for lifting and lowering a mold, which is formed so that it can be removed from inside.

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

Bolster for installing a mold on the main body 1 of a press machine
2 is fixed horizontally, and a plurality of T-grooves 3 are formed in the horizontal direction at arbitrary intervals in this bolster 2.

Although not shown in the drawings, this T-groove 3 has a locking tool interposed therein as appropriate, and the desired mold placed on the bolster 2 is fixed therein by using the locking tool. be.

A support plate 4 is laterally inserted into the lower part of the T-groove 3, and one or more plate-shaped support members 5 are provided on the upper surface of the support plate to protrude upward at arbitrary intervals. A tapered surface 6 that is inclined at an arbitrary angle is formed at one end of 5.

A rail 7 is inserted into the T-groove 3 above the support member 5 so as to be able to move laterally, and a plurality of guides 8 are provided on the lower surface of the rail T to protrude downward. A plurality of rollers 9 are rotatably attached at arbitrary intervals.

The intervals between the guides 8 correspond to the intervals between the lower supporting members 5,
A tapered surface 10 is formed at one end of the guide 8, that is, the end opposite to the tapered surface 6 of the support member 5.
The angle is the same as the angle of the tapered surface 60 on the supporting member 5 side, and when the rail 7 is installed in the T-groove 3, the tapered surface 6,1
0 are in contact with each other.

The roller 9 is rotatably supported via a shaft 12 in a groove 11 bored in the upper surface of the rail 7, but any other known mounting method and structure can be used for the roller 9. It is.

As shown in FIGS. 3 and 5, when the rail 7 is at its lowest position within the T-groove 3, the lower surface of the guide 8 is in contact with the support plate 4, and at this time the tapered surfaces 6 and 10 are also in close contact with each other.

However, when the rail 7 is pushed to the left as shown in FIG. 4, the rail γ and the guide 8 move upward while the tapered surface 10 is guided by the other tapered surface 6, and as shown in FIG. The outer periphery of the roller 9 is raised above the horizontal plane of the mouth end.

Note that the support plate 4 and the rail 7 are disposed in and out of the T-slot 3 on the bolster 2, so they are removed from the T-slot 3 and inserted into the T-slot 3 as appropriate. A locking tool is interposed, and a desired mold can be fixed on the bolster 2 using this locking tool.

On the other hand, a bracket 13 is fixedly projecting from the side surface of the main body 1, and one end of a plate-shaped bracket 14 is rotatably supported on the bracket 13.

A push plate 15 is integrally fixed to the upper surface of the bracket 14, and a plurality of rollers 16 are rotatably attached to the upper surface of the push plate 15.

A support ring 17 is rotatably attached to the lower part of the bracket 14 via a pin 18. A spring 19 or other similar tensioning member is installed between the body of the support ring 17 and the main body 1 to constantly pull the support ring 1γ clockwise around the pin 18.

Historically, a support member 20 is fixed to the side of the main body 1 to support the lower end of the support ring 11.

Next, we will discuss the operation.

Normally, the support ring 17 is removed from the receiving member 20 and the bracket 14 is hung down at the position shown by the dotted line A.

If a mold is placed on the roller 9 of the rail 7 in this state, the weight of the mold will cause the rail 7 to descend within the T-slot 3, and the outer periphery of the roller 9 will be lowered to the opening of the T-slot 3 due to its own weight. It goes down by a length t1 from the end and is held in the state shown in FIGS. 3 and 5.

Therefore, if the support plate 4 and the rail 1 are removed from the T-slot 3 of the bolster 2 in this state, a locking tool can be appropriately inserted in the T-slot 3, and the desired locking tool can be inserted into the T-slot 3. The mold can be fixed on the bolster 2, and various operations using the mold can be performed.

Next, when replacing another mold with a press machine, raise the bracket 14 to the horizontal position shown in FIG. I'll keep it.

At this time, when the bracket 14 is horizontal, the push plate 15
The left end surface 16a of the rail 7 pushes the right end surface γa of the rail 7 to the left.

Therefore, the rail γ rides on the tapered surface 6 of the support member 5 via the tapered surface 10 of the guide 8 due to the horizontal pressing force, and as a result, the upper roller 9 of the rail 7 is moved a distance t2 from the mouth end of the T-slot 3. It pops out upwards and faces the roller 16 on the pushing plate 15 (FIGS. 4 and 6).

Therefore, the mold is lifted off the upper surface of the bolster 2 via the roller 9.

At this time, the upper surface of the bolster 20 roller 9 and the upper surface of the pushing plate 150 roller 16 are on the same plane, so that the roller 16 on the bracket 14 side can be smoothly reached via the roller 9 that pushes the mold to the right. Move to.

Note that the lower end of the bracket 14 is supported by the support ring 11 held by the support member 20.
The mold moved from above 2 can be placed on the push plate 15.

In this state, the mold is removed to the outside, another predetermined mold is placed on the roller 16, and this mold is sent out to the bolster 2 via the rollers 16 and 9.

Next, when the mold comes to the predetermined position, the support rod 17 is moved to the member 20.
When the bracket 14 is removed from the T-slot 3 and the bracket 14 is allowed to hang down, the pressing force against the rail 7 is removed, and the rail 7 and roller 9 descend by a length of 11 from the end of the T-groove 3 due to the weight of the mold, rail 7, and roller 9. The mold is placed on the bolster 2.

Generally, when replacing a mold in a press machine, in order to move the mold from side to side, a rail or roller is raised above the top surface of the bolster, and the mold is easily immersed through this rail or roller. - In order to protect the rails and rollers when installed above, it is preferable to position the rails and rollers below the upper surface of the bolster.

However, in the present invention, a support member 5 and a guide 8 are provided below the rail 7, and a pushing plate 15 is provided at a position facing the rail 7, so that the roller 9 is moved between the bolsters 2 and 2 when replacing the mold.
Since the mold is made to protrude 12 degrees above the top surface, the mold can slide freely, and when the mold is installed on the bolster 2, the weight of the mold, rail 7, and roller 9 will cause the mold to slide upward.
Since the mold is lowered by 11 degrees from the top surface, the mold is lowered by roller 9.
The roller 9 can be protected by moving away from the roller 9.

Furthermore, in the mold lifting device of the present invention, since the rail I is inserted using the conventional T-groove 3, there is no need to drill a special groove for the rail γ, making processing convenient.

However, it goes without saying that a special groove may be provided and the rail 7 inserted therein for use.

Further, since the lower part of the rail T is supported by a large number of guides 8 and support members 5, the rail 7 can be prevented from bending within the T groove 3, and the mold can be replaced smoothly.

Further, the raising and lowering of the rail 7 does not require a complicated mechanism such as a special cam, so machining is easy, and there is no need for adjustment work, making maintenance easy.

Since the rail 1 is raised and lowered via a simple wedge-shaped support member 5 and guide 8, processing is easy, and the structure is compact and very advantageous in terms of cost.

[Brief explanation of drawings]

The attached drawings relate to one embodiment of the present invention, and FIG. 1 is a front view of a press machine, FIG. 2 is a partially enlarged longitudinal sectional front view, and FIG. 3 is a partially enlarged longitudinal sectional front view of the lowest rail. FIG. 4 is a partially enlarged longitudinal sectional top view when ascending, FIG. 5 is a partially enlarged longitudinal sectional side view when descending, and FIG. 6 is a partially enlarged longitudinal sectional side view when ascending. 2... Bolster - 3... Groove, 4... Support plate, 5...
...Supporting member, 6, 10...Tapered surface, γ...Rail, 8...Guide, 9...Roller, 15...Pushing plate, 16...Roller.

Claims (1)

[Scope of utility model registration request] A support plate is removably inserted into a groove formed on the bolster, and a plurality of support members each having a tapered surface formed at one end are formed upwardly on the support plate, In addition, a rail is disposed in the groove above the support member and is removably disposed with a guide whose lower surface has a tapered surface opposite to the tapered surface facing downward. The rollers are rotatably attached, and a push plate is provided that presses the end of the rail to force it to slide when it is stood up in the axial direction of the rail, and allows the rail to slide freely when it is overturned. It is rotatably attached to the bolster, and multiple rollers are rotatably attached to the top of the pusher plate.
The upper surface of the bolster roller and the upper surface of the roller of the pusher plate should be on the same plane when the pusher plate is erected, and the desired mold can be placed on each roller, and when the pusher plate falls down, A lifting device for a mold formed so that a support plate and a rail sliding thereon can be removed from a groove on a bolster.