JPH0646605Y2 - Upper die moving carriage device in low pressure casting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is a low-pressure casting equipment, and a trolley device for moving an upper mold to three or more positions such as a core setting position, a casting position, and a mold changing position. Regarding

(Prior Art) Generally, an upper die in a low-pressure casting facility is hung on a trolley and reciprocated between two positions, a casting position and a product unloading position, to perform each work at each position. is there.

Recently, in addition to the product take-out position, a mold replacement position has been provided.
There is an increasing demand for moving the upper die to a position above the number of locations to perform various operations.

On the other hand, the upper mold in the low-pressure casting equipment must be accurately positioned and stopped at each position to perform predetermined work such as core setting, mold matching, product removal, and mold replacement, but between two locations. In case of the upper mold that only moves,
Positioning can be ensured by providing positioning stoppers at both ends of the carriage. However, when moving the upper die moving carriage over three or more positions, there is a problem that a large-scale positioning device must be provided at each position.

(Purpose) The present invention has been made for the purpose of solving the above problems, and is a low-pressure casting in which the carriage can be accurately positioned at three or more positions by adding a simple device. An object of the present invention is to provide an upper die moving carriage device in equipment.

(Structure) Hereinafter, the structure of the present invention will be described in detail with reference to the illustrated example.
The pillars (1), (2), (1) and (2) are erected, and a flat frame-shaped ceiling frame (3) is fixed to the upper ends of the pillars (1), (2), (1) and (2). ing.

Before and after the middle position of the left and right columns (1) and (2), the frames (4) and (5) have their upper ends projecting upward from the front and rear positions of the ceiling frame (3) at appropriate intervals. The ceiling frame (6) is erected on the upper end thereof.

At the position between the frames (4) and (5) on the foundation,
Rails (7) (7) extending in the front-rear direction are laid via a base frame (8) (8), and the rails (7)
(7) Holding furnace truck (10) with holding furnace (9) mounted on top
Is movably mounted.

On the holding furnace (9), a furnace lid (11) is attached to the die base (12).
It is crimped together with the cylinder (13) (13),
The lower die (A) is mounted on the die base (12). In addition, (14) is a Stoke tube.

Further, an intermediate frame (15) is installed at a lower position between the columns (2) and (2) and the frames (5) and (5), and a rail (16) extending in the front-rear direction is provided on the intermediate frame (15). ) (16) is mounted on the mold change carriage (17).

An intermediate frame (18) is also installed at a lower position between the support columns (1) (1) and the frames (4) (4), and a support frame (1) is provided above the intermediate frame (18).
9) Rails (20) (20) extending forward and backward through (19) are provided, and a frame-shaped core carriage (21) is placed on the rails (20) (20). .

A surface plate (23) having a core support tool (22) mounted thereon is liftably mounted on the core carriage (21), and a cylinder (upwardly mounted on the intermediate frame (18) ( The push-up plate (25) attached to the piston rod of (24) allows it to be pushed up from the core carriage (21).

On the rails (20) (20), a product receiving cart (not shown) having the same structure and product support as the core cart (21) is placed, and the push-up plate (25). You can go in and out of the core truck (21) alternately above.

Further, guide rails (26) (26) extending in the left-right direction are horizontally provided on the inner surfaces of the front and rear frames of the frame-shaped ceiling frame (3), and the guide rails (26) (26) are mounted on the bogie frame. The upper and lower gripping rollers (28) (28) arranged at the four corners of (27) are engaged. A downward cylinder (29) is provided in the center of the carriage frame (27), and the tip of the piston rod of the cylinder (29) is
The die base (31) is fixed via the mounting bracket (30).

An upper die (B) is provided in the center of the lower surface of the die base (31), and the lower surfaces of both ends of the die base (31) are
Cylinders (32) and (32) are provided so as to face inward.
At the tip of the piston rod of each cylinder (32), a horizontal mold (C) having an inwardly formed recess (33) capable of being fitted into the core board of the core (N) is fixed.

Further, the cylinder (3) is located above the front and rear frames of the ceiling frame (3) through mounting brackets (not shown) at four corners of the upper surface of the carriage frame (27).
4) (34) is provided downwards and the cylinder (3
4) The tips of the piston rods (35) and (35) of (34) are formed in a tapered shape so that they can be easily inserted into and removed from guide holes (36) described later.

Further, in the front and rear frames of the ceiling frame (3), the upper position of the push-up plate (25), the upper position of the lower mold (A),
Also, the piston rod (35) can be fitted in the upper position of the die exchange carriage (17) at the same interval as the lateral interval of the piston rods (35) (35) of the cylinders (34) (34). Guide members (37) (3
7), (38), (38), (39) and (39) are fixed. The guide members (37) (37), (38) (38),
(39) (39) is a core support tool (22) of the upper mold (B) with the piston rods (35) (35) of the cylinders (34) (34) fitted in the guide holes (36). The lower mold (A) and the mold exchanging carriage (17) are arranged so as to be positioned at predetermined positions.

Further, in the figure, (40) is a hydraulic motor with a reduction gear, which rotates the gripping rollers (28) (28) to move the bogie frame (27).
Is designed to be moved.

Further, reference numeral (41) in the drawing denotes a product pushing mechanism operated by the cylinder (42).

(Operation) In the structure as described above, the cylinder (24) extends in the state shown in FIG. 1 to raise the push-up plate (25), and the surface of the core table (21) from the surface plate (23) and The core (N) together with the core support (22) is raised to a position corresponding to the horizontal molds (C) and (C) and stopped.

Next, the cylinders (32) (32) are extended and the recesses (33) (33) of the horizontal molds (C) (C) are fitted into the skirting part of the core (N) so that the cylinder (24) becomes The reverse operation causes the surface plate (23) and the core support tool (22) to return to the core carriage (21).

When the core (N) is set, the bogie frame (27) moves to the piston rod (35) of the cylinder (34) (34).
The horizontal molds (C) (C) and the core are accurately positioned and prevented from moving laterally by fitting the guide holes (36) of the guide members (37) and (37) with each other (35). The position of (N) is accurately matched, and the core (N) is not damaged by the mold closing of the horizontal molds (C) and (C). Subsequently, the cylinders (34) (34) are contracted to move the piston rod (3
5) Pull up (35) from the guide hole (36) and actuate the hydraulic motor (40) to drive the gripping rollers (28) (28) to move the bogie frame (27), upper mold (B), etc. downward. It moves above the mold (A) and stops.

Next, the cylinders (34) (34) are actuated to lower the piston rods (35) (35) and insert them into the guide holes (36) of the guide members (38) (38) so that the truck frame (27) is at a predetermined position. Accurately position and prevent lateral movement.

Then, the cylinder (29) is extended and the upper mold (B) and the horizontal molds (C) and (C) are fitted to the lower mold (A) with the core (N) fitted to each other. , Perform normal low pressure casting work.

During the mold matching operation, the bogie frame (27) fits between the piston rods (35) (35) of the cylinders (34) (34) and the guide holes (36) of the guide members (38) (38). Since the molds (A), (B), (C), and (C) are accurately positioned and prevented from moving in the lateral direction, the molds can be reliably matched.

When the low pressure casting is performed and the molten metal is solidified as described above, the cylinder (29) is reversely operated and the upper die (B), the horizontal die (C) (C), etc. to which the castings are attached are attached to the lower die. Separate from (A) and raise.

Next, the cylinders (34) (34) are reversely operated and the hydraulic motor (40) is reversely operated to return the bogie frame (27) and the like to their original positions.

At this time, a product receiving cart (not shown) is carried in above the push-up plate (28) instead of the core truck (21). Thereafter, the cylinders (34) (34) (24) (32) (32) (42) etc. are operated to transfer the cast product to the product receiving carriage and carry it out, and at the same time, push up the core carriage (21) again with the lifting plate (25). After carrying in the upper part, the state shown in the figure is obtained and the above operation is repeated.

Explaining die exchange, in the casting operation, a lower die (A), an upper die (B) and a lateral die (C) are used.
The state where (C) is matched (however, there is no core (N))
Then, in this state, the lower mold (A) and the upper mold (B) are fixed with bolts, nuts and the like, and the lower mold (A) and the die base (12) are unfixed.

In this case, since the carriage frame (27) is positioned, the upper mold (B) accurately corresponds to the lower mold (A), and the fastening of the both is easily performed. Next, the cylinder (29) is reversely operated to raise the upper and lower molds (B) (A) and the hydraulic motor (40) is further operated to move the upper and lower molds (B) (A) and the like to the bogie frame ( 27) and move it above the mold change carriage (17) and stop it.

Then, the cylinders (34) (34) are operated to insert the piston rods (35) (35) into the guide holes (36) of the guide members (39) (39) and position them, and then the cylinders (29) are operated. The upper and lower molds (B) and (A) are placed on the mold exchange carriage (17), and the upper mold (B) and the horizontal molds (C) (C) are placed.
And the die base (31) are disengaged, the mold change carriage (17) is carried out, and the mold change carriage (1) on which another mold is placed (1
The die is exchanged by carrying in 7) below the die base (31) and performing the operation reverse to the above.

Since the bogie frame (17) is accurately positioned at a predetermined position even when this die is replaced, a new upper die is attached to the die base (31) or a new lower die is attached to the die base (1).
Even when mounted on 2), there is no misalignment and work can be done easily.

(Effect) As is apparent from the above description, the present invention is a trolley that is movably arranged along the ceiling frame over three or more positions such as a casting position, a product take-out position, and a mold replacement position. Cylinders are arranged at four corners of the frame so as to be positioned above the ceiling frame via mounting brackets, and piston rods of the cylinders are formed so that the piston rods can be fitted into and out of guide holes of guide members provided on the ceiling frame. Therefore, it becomes possible to accurately position the bogie frame at each work position without providing a large-scale positioning device, and the upper die is hung on the bogie frame and is fastened to the upper die. Various operations such as core insertion work, product removal work, mold matching work, mold replacement work using lower molds etc. can be reliably performed, and the advantage is remarkable. Is.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view of a low-pressure casting equipment adopting the upper movable carriage device of the present invention. (3): Ceiling frame, (27): Bogie frame (34): Cylinder, (35): Piston rod (36): Guide hole, (37) (38) (39): Guide member (A): Metal plate Mold, (B): Upper mold

Claims (1)

[Scope of utility model registration request] 1. Cylinders (34) are provided at four corners of a bogie frame (27) suspended from an upper die (B), which is movably arranged along a ceiling frame (3) at three or more positions. Guide members (arranged at positions above the ceiling frame (3) via mounting brackets, and piston rods (35) of the cylinder (34) provided at respective positions above the ceiling frame (3). 37) (37), (38) (38), (3
9) An upper die moving carriage device in a low-pressure casting facility, which is formed so that it can be inserted into and removed from the guide holes (36) of (39).