JPH0227937Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a die roller device for replacing molds used when transporting molds into and out of a platen.

(Prior Art) Conventional die roller devices have structures shown in FIGS. 4 and 5.

That is, on platen a on which the base of the mold is placed,
A deep groove b extending toward the direction in which the mold is carried is formed, and an elongated inverted U-shaped frame c is formed within this groove.
At the same time, the upper surface of the frame c is attached to the platen a by the coil spring d.
The rollers were elastically supported so as to be substantially flush with the upper surface of the frame c, and a large number of rollers e were supported on the frame c so that the tops of the rollers protruded upward from the upper surface of the frame c.

(Problems to be solved by the invention) In the conventional device described above, the platen a is provided with a concave groove b into which a die roller consisting of a frame C, a coil spring D, and a roller e is loosely fitted. It has the disadvantage that it is bulky and heavy, and that dust tends to enter and accumulate in the groove b, making the die roller operate smoothly.

The object of the present invention is to obtain a new die roller device that eliminates the above-mentioned drawbacks.

(Means for Solving the Problems) In order to achieve the above object, the present invention is constructed as follows.

That is, in a die roller device for die exchange, which has a base of a die removably placed on a platen and a die roller that can be raised and lowered between the platen and the base, there is a mark on the lower surface of both sides of the base in the direction in which the base is carried in and out. A die roller is provided on the upper surface of the platen at a portion corresponding to the recess, and this die roller is arranged to extend in the loading/unloading direction of the base, and is arranged to extend in the moving body in the vertical direction. A housing hole is formed through the housing hole, and a plurality of rollers are spaced apart in the extending direction of the moving body within the housing hole, and the upper portions of some of the rollers are exposed from the top surface of the moving body and rotated by the moving body. A tilting member that is freely supported, is fixed to the platen side, and tilts upward in the direction in which the base is carried in is fitted into the housing hole of the movable body,
The remaining rollers except for some of the rollers are rotatably mounted on the inclined member.

(Function) In this invention, since the die roller that can be raised and lowered is placed on the upper surface of the platen, there is no need to form deep grooves in the platen, and the platen can exhibit sufficient rigidity even if it is formed with a thin wall. Become.

Furthermore, since the die roller protrudes from the upper surface of the platen and is covered above by the mold base, dust is prevented from adhering to and accumulating on the roller portion.

In addition, each roller and the inclined member are located in the accommodation hole formed in the die roller, and some of the rollers are exposed upward from the accommodation hole and come into contact with the lower surface of the concave part of the base, and the remaining rollers are placed in the inclined member. Since they are in contact with each other, the structure is simple and compact, and
It will withstand high loads.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

First, in the drawings, FIG. 1 is a front view of the main parts of a casting machine showing an embodiment of the present invention, FIG. 2 is a side view of the main parts thereof, and FIG. 3 is a plan view thereof.

1 is the lower platen, and the base 2 is installed on the upper surface of the lower platen.
be placed in a removable manner.

On the upper surface of the base 2, a lower mold 3 of the upper and lower molds is placed and fixed.

Reference numeral 4 denotes an upper mold, which is suspended and supported by an upper movable platen via an upper mold base (not shown).

In FIG. 1 of the base 2, the left and right ends 2a,
2b is formed with recesses 5, 5' which are inwardly recessed in the lower part thereof and which extend over the entire length of the base 2 in the front-rear direction (carry-in/out direction).

Then, the die rollers 6, 6' fitted into the recesses 5, 5' are placed on the upper surface of the platen 1.

Both die rollers 6 and 6' have the same configuration,
The die roller 6 on the left side will be explained as a representative.

The die roller 6 is arranged to extend along the recess 5, and has its front portion 6a protruding forward from the platen 1. The inclined member, that is, the cam plate 6c, is arranged and fixed at a predetermined pitch in the longitudinal direction.

Then, a moving body extending over substantially the entire length of the guide housing 6b, that is, a lift plate 6d, is fitted into the guide housing 6b so as to be slidable in the front-rear direction. This lift plate 6d is made up of two plates arranged opposite each other to form an accommodation hole passing vertically between them, and four upper rollers 6e located at the upper part and four upper rollers 6e located at the lower part between each plate. Four lower rollers 6f are pivotally supported. Each of the upper rollers 6e has its top projected slightly above the upper edge of the lift plate 6d, and each of the lower rollers 6f has its lower part brought into contact with the slope of the cam plate 6c, thereby causing the lift plate 6d to When moving forward and backward (moving to the left and moving to the right in FIG. 2), the lower roller 6f rolls on the cam plate 6c to raise and lower the lift plate 6d together with the upper roller 6e.

When the upper roller 6e is raised, its top comes into contact with the lower surface of the left end 2a of the base 2, and the base 2 is raised and separated from the platen 1. Conversely, when the upper roller 6e is lowered, its top The inclination angle of the cam plate 6c and the amount of movement of the lift plate 6d in the left-right direction are set so that the cam plate 6c is spaced apart from the lower surface of the left end portion 2a of the base 2.

In addition, in FIG. 2, 6h is a stopper that restricts excessive movement of the lift plate 6d to the right (backward).
Reference numeral 6j is a stopper that restricts excessive movement of the lift plate 6d to the left.

Further, 6k is a guide hole drilled in the lift plate 6d, into which a guide pin 6m locked to the guide housing 6b is loosely fitted, so that when the platen 1 is tilted, the lift plate 6d is removed from the guide housing 6b. Prevent them from leaving.

The lift plate 6d has an end block 6n fixed upright at its left end, and the starting end of a sliding roller conveyor attached to the cart (not shown) presses the lift plate 6d with the driving force of an air cylinder. is moved to the right in Figure 2.

The base 2 is secured to the platen 1 by a clamp device A as shown in FIG.

That is, clamp shafts 8a, 8b are attached to support fittings 7a, 7b fixed upright on the left and right sides of the base 2.
Extends in the front-rear direction and is rotatably attached.

In addition, a pair of front and rear clamp claws 9a, 9b that abut the upper surfaces of the left and right ends 2a, 2b of the base 2 are fixed to the clamp shafts 8a, 8b, and a clamp arm that hangs downward is attached to the front end of each clamp shaft 8a, 8b. 10a and 10b are fixed.

The left end of the piston rod 11a and the right end of the cylinder 11b of the hydraulic cylinder mechanism 11 are rotatably connected with pins to the lower ends of the clamp arms 10a and 10b, and the clamp claws 9a and 9b are rotated downward when the cylinder mechanism 11 is extended. move base 2
are press-locked to the platen 1, and set so that the clamp claws 9a, 9b are rotated upward and separated upward from the base 2 when the cylinder mechanism 11 is retracted.

Although not shown, the upper mold base that suspends and supports the upper mold 4 is also removably locked to the upper platen by a clamp device similar to the clamp device A described above.

When moving the aforementioned lift plate 6d rearward, that is, operating the lift, it is performed after disengaging the upper and lower clamp devices A with the upper mold 4 and the upper mold base stacked on the lower mold 3. .

(Effects of the invention) As is clear from the above explanation, according to the invention, there is no need to provide a concave groove in the lower platen, which takes on a large load during casting operation, and the platen can be made thinner and lighter while still achieving the desired performance. Rigidity can be maintained.

Moreover, since the die roller protrudes upward from the top surface of the platen and its upper part is covered by the mold base, dust is prevented from adhering to and accumulating on the die roller, ensuring smooth operation over a long period of time. Become.

In addition, each roller and the inclined member are arranged in the accommodation hole formed in the die roller, and some of the rollers are brought into contact with the lower surface of the concave part of the base, and the remaining rollers are brought into contact with the inclined member, so that the structure is improved. It is simple and compact, can withstand high loads, and has the advantage of smoother operation of the moving body.

[Brief explanation of the drawing]

Fig. 1 is a front view of the main parts of a casting machine showing an embodiment of the present invention, Fig. 2 is a side view of its main parts, Fig. 3 is a plan view thereof, and Figs. 4 and 5 show a conventional example. FIG. 2 is a partial cross-sectional side view and a negative cross-sectional view of the die roller shown in FIG. 1: Platen, 2: Base, 2a: Left end, 2
b: Right end, 3: Lower mold, 4: Upper mold, 5, 5': Recessed part, 6, 6': Die roller, 6a: Left end, 6
b: Guide housing, 6c: Cam plate (inclined member), 6d: Lift plate (movable body), A: Accommodation hole, 6e: Upper roller (some rollers), 6f:
Lower roller (remaining roller), 6h, 6j: Stopper surface, 6m: Guide pin, 6n: End block, A: Clamp device, 7a, 7b: Support metal fittings, 8a, 8b: Clamp shaft, 9a, 9
b:: Clamp claw, 10a, 10b: Clamp arm, 11: Cylinder mechanism.

Claims (1)

[Scope of utility model registration request] The base of the mold is removably placed on the platen,
In a die roller device for mold replacement, which is provided with a die roller that can be raised and lowered between a platen and a base, recesses extending in the loading/unloading direction of the base are formed on both lower surfaces of the base, and recesses are formed on the upper surface of the platen and A die roller is provided at a portion corresponding to the recess, and this die roller extends and arranges the movable body in the loading/unloading direction of the base, forms an accommodation hole that penetrates the movable body in the vertical direction, and has a plurality of die rollers in the accommodation hole. The rollers are spaced apart in the extending direction of the moving body, and the upper parts of some of the rollers are exposed from the upper surface of the moving body, and each roller is rotatably supported on the moving body, and is fixed to the platen side and extends in the direction in which the base is carried in. For mold replacement, characterized in that an inclined member that slopes upward in the direction is fitted into a housing hole of a movable body, and the remaining rollers other than some of the rollers are placed on the inclined member so as to be able to roll. Die roller device.