JPS6324787B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a core assembly and conveyance device that assembles a plurality of cores, conveys them, and stores them in a main mold.

(Prior Art) The assembly and transportation of cores is generally performed by the cooperation of a core assembly device and a core setter. That is, in the core assembly apparatus, a plurality of cores are assembled by relatively moving the respective jig stands. The core setter descends relative to the core assembly device,
The assembled core is positioned with respect to the core setter, clamped, lifted and transported, and placed in the main mold.

As a means for positioning and clamping the assembled core by the core setter, there is an idea of providing the core setter body with a fixed bracket and a rotating clamper that face each other in the moving direction during core assembly. In this case, an inclined surface that contacts the core is formed on the fixed bracket, and the core setter body is lowered and the core is moved laterally by the sliding contact between the inclined surface and the core, and is positioned by the fixed bracket. The core is clamped by the rotation of the clamper.

However, in the case of this prior art, if there is an extra gap between a plurality of assembled cores, there is a concern that the fixing bracket and the core may interfere and damage the core. Further, the bracket wears out due to contact with the core, requiring early replacement, and there is a risk that accurate positioning cannot be expected due to this wear.

(Objective of the Invention) The present invention employs the same method of assembling the core for positioning the core on the core setter side, thereby preventing the core from being damaged or causing early wear of the positioning means. The aim is to enable accurate positioning of the

(Structure of the Invention) The core assembly and conveyance device of the present invention includes a core assembly device that assembles a plurality of cores by shifting each core jig table, and clamps the assembled cores from both sides in the direction of shifting. It is equipped with a core setter that lifts, transports, and stores it in the main mold. This core setter includes a shifting arm that applies a shifting motion to the core by strokes from both sides in the shifting direction, and a shifting arm that moves the shifting arms to each other after the shifting pressure is released in the core assembly device. An arm actuating means for shifting the arm is provided.

In the case of the present invention, one end of the core is positioned by the shifting arm that finishes the shifting operation first among both shifting arms, and the shifting arm that finishes the shifting operation later works together with the first shifting arm to assemble the core. The state is maintained or the entire core is positioned. In this case, since the both-shifting arms stroke the core from both sides, there is no interference due to misalignment with the core or sliding contact with the core, and the core is assembled after the core-assembling device's shifting pressure is released. The setting by the device and the setting by the core setter do not interfere with each other.

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

FIG. 1 shows the relationship of the core transport system path to the core storage station 2 of the main mold transport line 1. As shown in FIG. In this case, the main mold 3 is obtained by the shell molding method, and is transported along with the pallet 4 and positioned at the core holding station 2. The core 5 is arranged to be placed in the main mold 3 of the core placing station 2 via a core assembly station 6 located beside the main mold conveying line 1, via a core picking station 7.

That is, the first transport rails 8, 8 from the assembly station 6 of the core 5 to the pick-up station 7 are provided parallel to the main mold transport line 1, and between the pick-up station 7 and the core storage station 2. A running frame 10, 10 supported by a column 9 is provided so as to straddle both the stations 2, 7, and a second transport rail 11, 11 is provided on the running frame 10, 10. A first moving carriage 12 supporting a core assembly device (not shown) is supported on the first transport rails 8, 8, and the core 5 is assembled on the first moving carriage 12 at the assembly station 6. The core is transported as it is to the core picking station 7. Further, a second movable cart 15 supporting a core setter 13 so as to be movable up and down by a lifter 14 is supported on the second transport rails 11, 11. It is conveyed to the station 2, and is housed in the main mold 3 by lowering the core setter 13. First and second mobile carts 1
2 and 15 are adapted to be reciprocated by cylinder devices 16 and 17.

FIG. 2 shows the overall structure of the core assembly device 20. As shown in FIG. That is, in the same device, 21 is a head on which the head core 5a and the jacket core 5b are placed.
A jacket jig table 22 is a bore jig table on which the bore core 5c is placed, 23 is a front jig table on which the front core 5d is placed, and 24 is a rear jig table on which the rear core 5e is placed. The head/jacket jig stand 21 is fixed to the base plate 25, and the bore jig stand 22 is fixed to the head/jacket jig stand 21.
The front jig table 23 and the rear jig table 24 can be moved in the X direction by cylinder devices 26, 26, respectively, and the head/jacket jig table 21
On the other hand, the cylinder devices 27 and 28 and the guide device 2 are arranged in the Y direction perpendicular to the X direction.
9, 30 can be arranged.

Further, the head/jacket jig stand 21 has a head stand 31 and a jacket stand 32, and the bore jig stand 22 has a jacket core 5b passed through and a bore core 5c pressed against the head core 5a. A pressing cylinder device 33 is provided.

Cylinder device 26 for moving the bore jig stand 22
In this example, as shown in FIG. 3, there are a piston rod 35 having a piston portion 34 in the middle and both ends fixed to the base plate 25, and a cylinder case 36 that is fitted into the piston rod 35 and supports the bore jig stand 22. It consists of In this case, by supplying and exhausting the chambers on both sides of the piston part 34 in the cylinder case 36 through the fluid passages 37, 37 formed in the piston rod 35, the bore jig stand 22
It is designed to move forward and backward.

The core setter 13 includes an elevating body 40 supported on a second movable cart 15 so as to be movable up and down, and a core holding jig 42 supported movably in a horizontal plane by a floating device 41. Core holding jig 42
Bearings 44, spaced apart from the main body plate 43,
Horizontal support shafts 45, 45 are rotatably supported at 44, and a swing arm 46,
46 is fixed.

The swinging arms 46, 46 have hooks 47,
It has a cylindrical base into which engaging rods 49, 49 having 48 are biased upward by first biasing means 50, 50 and inserted in a penetrating state, and from the upper part of this cylindrical base, the center side of the main body plate 43 is inserted. Rotating arm part 5
1 and 51 protrude, and arm parts 52 and 53 are fixed to the lower part of the cylindrical base. Hooks 47 and 48 are provided between the rotation arm portions 51 and 51 and the main body plate 43, respectively.
Swing arm 4 in the direction of engagement with head core 5a
Second biasing means 54, 5 for biasing rotation of 6, 46
4 is provided. In this case, the swing arm 4
6, 46 rotation direction, that is, the shifting arm portion 52,
The moving direction of the bore core 53 is the same X direction as the moving direction of the bore jig stand 22 of the core assembly device 20, and the both moving arms 52 and 53 each move the bore core 5
c. The head core 5a is brought into contact with the head core 5a from the side by a stroke caused by rotation. Further, rollers 55, 55 are attached to the upper ends of the rotating arm portion 51 and the engaging rod 49, and stoppers 56, 55 are attached to the main body plate 43 for regulating the amount of movement of both the swinging arms 46, 46.
7 is fixed.

Above the core holding jig 42, the pressing member 58 is supported by a cylinder device 59 and guide devices 60, 60 so as to be movable up and down. This pressing member 58 is lowered so that the roller 5
5 and 55 to rotate and lower the swinging arm 46 and the engagement rod 49 against the urging of the urging means 50 and 54.
The downward strokes S ₁ and S ₁ for contacting the rollers 55 and 55 of 9 and 49 are the same, and the swinging arms 46 and
The downward strokes S ₂ and S ₃ for contacting the rollers 55 and 55 of 46 are made in the relationship S ₁ <S ₂ <S ₃ .

Therefore, in the case of this example, the shifting arm portions 52, 53
The arm actuating means for performing the pulling operation includes second biasing means 54, 54 and a pressing member 58 as constituent elements, and the arm actuating means for performing the pulling operation is provided with the above-mentioned downward stroke S ₂ < S ₃
According to the relationship, the operation of the shifting arm section 53, which applies a shifting operation to the bore core 5c, ends after the operation of the shifting arm section 52, which applies a shifting operation to the head core 5a, ends. In addition, this arm actuation means is
Cylinder device 2 for moving the jig table of the core assembly device 20
The operation is controlled so that it operates after the closing operation pressure of 6, 27, and 28 is released.

In addition, the base plate 25 of the core assembly device 20
Positioning tubes 61, 61 that open upward are fixed to the head/jacket jig table 21.
Fixed to the main body plate 43 of the core setter 13 are positioning devices 63, 63 in which positioning rods 62, 62 whose tips are fitted into the positioning cylinders 61, 61 are biased downward.

Although FIG. 3 above shows the means for moving and clamping the core 5 in the X direction of the core setter 13, the objects of shifting and clamping in the Y direction are only the front and rear cores 5d and 5e. This is substantially the same as in the X direction, and illustration and explanation thereof will be omitted.

Next, to explain the assembly and transportation of the core 5,
First, each core 5 is assembled at the core assembly station 6.
Place a to 5e on each jig table 21 to 24. Then, by operating the cylinder device 26, the bore jig stand 22 is moved to the head/jacket jig stand 21, and the head core 5a, jacket core 5b, and bore core 5c are assembled, and then the cylinder device 27, 28
Due to the operation of the front and rear jig stands 23,
24 to the head jacket jig stand 21 and assemble the front and rear cores 5d and 5e.

Then, the assembled core 5 is transported to the core pick-up station 7 by the first moving cart 12. In this station 7, the core setter 13 is lowered, and the positioning rods 62, 62 and the positioning tubes 61, 61 are fitted, whereby the core holding jig 42 of the core setter 13 and the core assembly device 20 are positioned. . During this positioning, if there is any misalignment between the core setter 13 and the core assembly device 20, the misalignment is corrected by the floating movement of the core holding jig 42 by the floating device 41.

After the operating pressure for moving the jig table in the core assembly device 20 is released, the pressing member 58
is lowered and starts pushing down the engagement rods 49, 49, and then the swinging arms 46, 46 are applied to the biasing means 5 in the order of the bore core side and the head core side.
4, 54 and rotate it in the opposite direction of the push-in direction.
Next, the pressing member 58 rises, the engagement rods 49, 49 start to rise, and the swing arms 46, 46 start to rotate in the direction of bringing them together.

In this shifting, first, the pressing member 58 is separated from the roller 55 of the head core side swinging arm 46, so that the shifting arm portion of the swinging arm 46
After completing step 2 on the head core side,
Similarly, in the bore core side swinging arm 46, the shifting by the shifting arm portion 53 is completed with a time delay. As a result, the core 5 is positioned with respect to the core holding jig 42 with reference to the end surface on the head core side that has been moved first. At the end of this positioning, the hooks 47 facing into the holes of the head core 5a and the bore core 5c,
48 rises as the pressing member 58 continues to rise, engages with the head core 5a and the bore core 5c, respectively, and lifts the core 5.

Thereafter, the core setter 13 rises, and the second movable cart 15 moves to transport the core 5 to the core storing station 2, where it descends and stores the core 5 in the main mold 3.

In the above embodiment, the shifting operation by the shifting arm is performed in a rotational manner, but it is possible to perform a linear stroke in the horizontal direction using a cam or the like that converts the downward force of the pressing member into horizontal force. A closer movement may also be performed.

Further, in the above embodiment, the engaging rod and the shifting arm are operated by the same swinging arm, but the operating means may be separate.

Furthermore, it goes without saying that the present invention can be used for assembling and transporting molds other than cylinder block molds.

(Effects of the Invention) According to the present invention, the assembled core is positioned and lifted by the shifting arm using strokes from both sides in the shifting direction, which prevents damage to the core. The core can be transferred from the assembly device to the core setter without causing premature wear of the shifting arm, and the core can be accurately positioned based on one end, making it possible to move the core from the core setter side when placing the core in the main mold. This makes it easy to set the allowable error clearance when there is an error in the positioning between the core and the main mold side or in the core dimensions.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention, and FIG. 1 is a perspective view showing the relationship between the core conveyance path and the main mold conveyance path, and FIG.
The figure is a plan view schematically showing the core assembling device, and FIG. 3 is a partially cutaway plan view showing the relationship between the core setter and the core assembling device. 3... Main mold, 5... Core, 15... Core setter, 20... Core assembly device, 21 to 24... Jig stand, 26 to 28... Cylinder device for moving jig stand,
42... Core holding jig, 50, 54... Urging means, 52, 53... Bringing arm portion, 58... Pressing member.

Claims (1)

[Claims] 1. An assembly device that has a jig stand on which a plurality of cores are placed, and assembles the cores by relatively moving at least one jig stand to another jig stand using a jig stand moving means; The core setter is equipped with a core setter that clamps the core from both sides in the above-mentioned shifting direction, lifts it up, conveys it, and stores it in the main mold, and this core setter includes a shifter that applies a shifting action to the core by a stroke from both sides in the above-mentioned shifting direction. A core assembly and conveyance device characterized by being provided with an arm and an arm operating means for operating the two shifting arms by staggering the end of the shifting operation after the shifting operation pressure is released by the jig table shifting means. .