JPH0342145B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a die cutting device for casting.

When removing a cast product that has been cast into a metal mold from the mold during casting work, the opening of the metal mold is reversed so that it faces downward, and the cast product inside the mold is forcibly released. It is possible to do so, but
It is not easy to automatically perform this action on a mold that is transported in a casting line with the opening facing upward.

The present invention was made in view of these points,
The purpose of this system is to automate the mold removal process for molds that are transported with the opening facing upward in a casting line, and a lifting drive mechanism is installed on the transport path of the mold transport plate on which the mold is fixed. an elevating body that is raised and lowered by a reversing drive mechanism; , a product extrusion mechanism is provided that inserts an extrusion rod into the through hole in the mold conveyance plate and the bottom of the mold during inversion, inserts the casting, and extrudes the cast product from the mold, and lifts and lowers the inverter from a position below the inverter. This structure includes a product receiving body that is moved forward and backward by a forward and backward drive mechanism across positions outside the area.

Next, before explaining the present invention, a general outline of the casting line will be explained based on FIG.

Along the casting line 1, which is arranged in a rectangular shape when viewed from above, there is a core housing section 2, a pouring section 3, a mold reversing section 4 for removing unnecessary materials that obstruct weir folding, and a sprue folding section. The folding section 5, the folding section 6, the main device section 7, and the mold cooling or heating section 8 are arranged in this order. Mold conveying plates 11 are arranged throughout the casting line 1, and two metal molds 12 are fixed to each mold conveying plate 11 with screws. teeth,
The length and width are formed in a 2:1 ratio.

Next, one embodiment of the present invention will be described based on the drawings.

As shown in FIG. 3, a part of the conveyance path 15 of the mold conveyance plate 11 is disposed between the bases 14 on both sides fixedly installed on the floor surface. This conveyance path 15 is
It is formed by fixed beams 16 on both sides and two integrated movable beams 17, each beam 16,1
In 7, linear members having lengths approximately corresponding to the linear sides 1a, 1b, 1c, and 1d of the rectangular casting line 1 are arranged in parallel.

Then, by raising the two movable beams 17 in a horizontal position by raising a plurality of sets of support rollers 18, the movable beams 17 lift the mold conveying plate 11 from above the fixed beam 16, and then By horizontally feeding the movable beam 17 forward on the supporting roller 18 by a hydraulic cylinder (not shown), the mold conveying plate 11
The movable beam 17 is then lowered in a horizontal position by lowering the support roller 18, so that the mold conveying plate 11 on the movable beam 17 is placed on the fixed beam 16, and then the movable beam 17 is moved forward. The movable beam 17 is returned to its initial position by horizontally feeding the movable beam 17 backward by the fluid pressure cylinder (not shown). By operating the movable beam 17 in this manner, each mold conveying plate 11 and the metal mold 12 integrated therewith are sequentially and intermittently fed. The fixed beam 16 and the movable beam 17 are provided with a large number of protruding protrusions 21 at required locations to fit into positioning recesses 20 on the lower surface of the mold transport plate 11.

Further, as shown in FIGS. 2 and 3, four elevating guide columns 23 are erected from the base 14 on both sides of the conveyance path 15, and support frames 24 are provided at the upper ends of the elevating guide columns 23 on both sides. Furthermore, an elevating body 25 is installed on the elevating guide pillars 23 on both sides so as to be able to rise and fall freely via the guide tube portions 26 on both sides, and an elevating drive mechanism 27 is connected to the elevating body 25.

This elevating drive mechanism 27 includes the support frame 2
The cylinder body of the fluid pressure cylinder 29 is fixed to the center of the piston rod 4, and the tip of the piston rod 30 and
A bracket 31 provided at the center of the upper surface of the elevating body 25
are connected via a shaft 32.

Further, as shown in FIG. 3, the elevating body 25
A convex portion 34 is fixed to the upper surface of both sides of the convex portion 34.
A hole member 35 that fits into the hole member 35 is fixed to the lower surface of the support frame 24, so that when the elevating body 25 rises, the convex portion 34 and the hole member 35 fit together and the elevating body 25 is accurately positioned. Make it.

Further, bearings 38 are fixed to the support plates 37 on both sides of the elevating body 25, and a support shaft 39 is fixed between the bearings 38 on both sides.
The reversing body 40 is rotatably supported via the shaft, and a reversing drive mechanism 41 is connected to the support shaft 39 of the reversing body 40 .

As shown in FIG. 6, this reversing drive mechanism 41 has a support member 42 fixed to support plates 37 on both sides of the elevating body 25, and a hydraulic rotary actuator 43 is mounted on the outer surface of the support member 42. The main body is fixed, and the rotating shaft 44 of the actuator 43 and the support shaft 39 of the reversing body 40 are connected by a connecting body 45 such as a chain coupling spring, and the reversing body 40 is rotated in the direction of the arrow shown in FIG. move. Reference numeral 46 denotes a stopper that locks the reversing body 40 when it returns to reverse.

Further, as shown in FIGS. 5 and 6, four plate holding mechanisms 49 each hold both ends of the two mold conveying plates 11 on the reversing plates 48 on both sides of the reversing body 40, and The cast products in the four molds 12 on the four plates 11 are
4 product holding mechanisms 50 each held in 2
and are provided so that they can be held and released at will.

The plate holding mechanism 49 includes the reversing plates 4 on both sides.
Rail-shaped plate receiving portion 5 on the inner surface of the lower end of 8
3 is fixed, and this plate receiving part 53 is a notch formed by cutting out a part of the fixed beam 16 of the conveying path 15 over the length of two plates 11 as shown in FIG. Fixed beam 16 to 52
A bracket 54 is fixed to the outer surface of the lower end of the reversing plate 48 on both sides, and the base end of the holding arm 55 is attached to the base of each bracket 54 with a shaft 56. The tip claw portion 57 of the holding arm 55 projects above the plate receiving portion 53 through the hole 58 at the bottom of the reversing plate 48, and the tip portion of the bracket 54 and the holding arm 55 Upper part and axis 5
9, 60, 61 and links 62, 63, and the tip of the piston rod 65 of the fluid pressure cylinder 64 is rotatably connected to the shaft 61 between the links 62, 63. The main body is rotatably supported via a shaft 67 by a bracket 66 fixed to the upper part of the reversing plate 48. Note that, like the fixed beam 16, a positioning convex portion 68 that fits into the positioning recess 20 of the mold conveying plate 11 is provided in a protruding manner on the plate receiving portion 53.

Further, the product holding mechanism 50 includes reversing plates 4 on both sides.
A shaft 72 is rotatably supported via a pair of bearings 71 on the upper outer surface of the shaft 8, and a locking arm 73 is attached to the shaft 72.
The cylindrical base end portion 74 of the locking arm 73 is projected into the inside of the reversing plate 48 through the hole 75 in the upper part of the reversing plate 48.
A locking part 76 formed at the tip of the shaft 72 is made to face the core 161 in the mold 12 so as to be able to freely approach and separate from it.
A link 77 is provided integrally projecting from one end, and the tip of a piston rod 79 of a fluid pressure cylinder 78 is rotatably connected to the tip of this link 77 via a shaft 80. The cylinder body is connected to the reversing plate 48 via support shafts 81 on both sides thereof.
It is rotatably supported by a pair of bearings 82 fixed to the outer surface of the.

In addition, extrusion rods 85 are inserted into the mold conveying plate 11 and the through holes 84 at the bottom of the mold 12 during reversal at four locations on the elevating body 25 to move the cast product to the mold 12.
A product extrusion mechanism 86 is provided for extruding the product from the respective parts.

As shown in FIG. 8, each product extrusion mechanism 86 has a hollow support part 87 vertically fixed to the upper surface of the elevating body 25, and a fluid pressure cylinder attached to the upper end attachment part 88 of the support part 87. 89 is fixed, and an engaging part 92 fixed to the upper end surface of the cylindrical part 91 is slidably fitted to the piston rod 90 of this fluid pressure cylinder 89.
The proximal end 93 of the extrusion rod 85 inside the piston rod 90 is screwed and fixed to the piston rod 90, and the engaging portion 92 integrated with the cylinder portion 91 and the proximal end 93 of the extrusion rod 85 are engaged in a manner that allows the extrusion rod 85 to freely engage and separate. In addition, a sliding receiving part 94 that fits on the outer circumferential surface of the cylindrical part 91 is fixed to the elevating body 25, and a sliding receiving part 94 that fits on the outer circumferential surface of the extrusion rod 85 is fitted on the lower part of the sliding receiving part 95. Also, the cylindrical portion 91
Engaging surfaces 96 and 97 are provided on the outer periphery of the sliding receiving portion 94 and the upper end of the sliding receiving portion 94.
An engagement surface 9 is provided between the base end 93 of the cylinder part 91 and the inner peripheral part of the cylinder part 91.
8,99 will be provided. Further, a rod 102 is integrally provided on the upper part of the cylindrical portion 91 via a mounting plate 101, and this rod 102 is slidable by a sliding receiving portion 103 fitted to the upper end mounting portion 88 of the supporting portion 87. A switch operating portion 104 is fixed to the upper end of the rod 102, and a mounting plate 105 is provided upright from the mounting portion 88, and a limit switch 108, 109 is fixed, and the detection arm 11 of this limit switch 108, 109 is
0,111 facing the switch operating section 104.

By making the sliding receiving part 95 of the pushing rod 85 more slippery than the sliding receiving part 94 of the cylindrical part 91, when the piston rod 90 of the fluid pressure cylinder 89 is pushed out, the pushing rod 85 first descends and protrudes from the cylindrical portion 91, and the engaging surfaces 98 and 99 engage,
Next, the push rod 85 and the cylinder part 91 are lowered together, and the engaging surfaces 96 and 97 are engaged, and this state is detected by the lower limit switch 109. Also, when the piston rod 90 is retracted, the push rod 8
5 rises and enters the inside of the cylindrical part 91, and the engaging part 92
and the proximal end 93 are engaged, and then the push rod 85 and the cylindrical part 91 rise together and are locked to the convex part 112 of the cylinder body, and this state is controlled by the upper limit switch 108. detected. The cylindrical portion 91 holds substantially the upper half of the push rod 85 when the push rod 85 protrudes, thereby preventing the push rod 85 from bending.

Further, as shown in FIGS. 2 and 3, on the mold 12 of the conveyance path 15, along the conveyance path 15, from a position below the reversing body 40 to a position outside the lifting area of the reversing body 40, The trolley 12 can move forward and backward freely.
Set 0.

This trolley 120 has upper wheels 1 on both sides of one end.
21, and legs 122 on both sides of the other end.
A lower roller 123 is provided through the upper roller 121, and the upper roller 121 is movably mounted on two sets of guide rails 124 arranged in parallel above the conveyance path 15 by means of a fixed frame (not shown). The lower roller wheels 123 are movably placed on guide rails 125 fixed on the base 14 on both sides of the conveyance path 15.

Further, this truck 120 is provided with a forward/backward drive mechanism 127. As shown in FIG. 2, this advancing/retracting drive mechanism 127 has a cylinder mounting frame 128 fixed above the conveyance path 15 by a fixed frame (not shown), and the cylinder of the fluid pressure cylinder 129 is fixed by this mounting frame 128. A bracket 132 fixed to the upper surface of the truck 120 is connected via a shaft 131 to the tip of a piston rod 130 of the hydraulic cylinder 129 that supports the main body.

Further, a product receiver 135 having an opening 134 on the same side as one side of the conveyance path 15 is rotatably supported on the cart 120 around the opening side. 136 is the bracket on the side of the trolley 120,
137 is a support shaft, and 138 is a bracket on the receiver 135 side. Further, a contact portion 140 whose height can be adjusted with a bolt is provided on the upper surface of the other side of the truck 120, and a convex portion 141 that can freely approach and separate from the contact portion 140 is provided on the lower surface of the other side of the receiver 135. Set up Further, a convex portion 142 for tilting is fixed to the other side of the receiving body 135.

Further, a tilting drive mechanism 144 is provided at a position outside the elevating area of the reversing body 40 to raise the opposite side of the product receiving body 135 centering around the opening 134 side.

As shown in FIG. 7, this tilt drive mechanism 144 moves a pair of guide rails 145 in an arc shape from the side of the convex portion 142 of the product receiver 135 to above the side of the opening 134 of the receiver 135. and supported by fixed frames 146, 147 and a support plate 148, and two sets of rolling wheels 152 rotatably supported on the pair of guide rails 145 on both sides of the movable body 151 are movably supported. The movable body 151 is fitted into the convex portion 142 of the receiver 135.
A concave portion 153 is integrally provided in the movable body 151 to be fitted from the horizontal direction, and the tip of a piston rod 155 of a fluid pressure cylinder 154 is rotatably connected to the lower part of this movable body 151 by a shaft 156, so that the above-mentioned fluid The cylinder body of the pressure cylinder 154 is rotatably supported by a bracket 157 on the base 14 via a shaft 158. Note that the guide rail 145 is the support shaft 1.
It is formed into an arc shape with 37 as the center.

Next, the effect will be explained.

The elevating body 25 is lowered by the fluid pressure cylinder 29, and the plate receiving part 53 of the reversing plate 48 is fitted into the notch part 52 of the fixed beam 16 and positioned continuously.
The two mold conveying plates 11 are positioned on the plate receiving portion 53 by the conveying action of the movable beam 17, and are positioned by the convex portions 68.

Then, the piston rods 65 of the four fluid pressure cylinders 64 are pushed out, and both ends of the two plates 11 are fixed to the plate receivers 53 by the four holding arms 55, and at the same time, the four fluid pressure cylinders 78 are pushed out. The piston rod 79 is pushed out and the four locking arms 73 press and lock the cores 161 housed in the four metal molds 12 from above, thereby locking the cores 161 in each mold 12 and the cores 161 in each mold 12. The cast product cast between the core 161 and the mold 12 is held within the mold 12, and the hydraulic cylinder 2
9 raises the elevating body 25.

Then, the truck 120 is pushed by the hydraulic cylinder 129 to push the product receiver 135 to a position below the inverting body 40 which has risen together with the elevating body 25, and the hydraulic rotary actuator 43
The inverter 40 is rotated 180 degrees by the holder to turn the openings of the four molds 12 on the two plates 11 from upward to downward, and then the locking arm 73 holding the cast product etc. is released and the product is removed. Take a falling position such as

Then, the extrusion rod 85 is extruded by the fluid pressure cylinder 89, and the extrusion rod 85 is inserted into the mold conveying plate 11 which is being reversed and the through hole 84 at the bottom of the mold 12, and is fitted into the bottom of the mold 12. A socket core that closes the through hole 84 (the above-mentioned core 16
The socket core, the core 161, and the cast product are pushed down from the opening of the mold 12, and then transferred to the product receiver 135 on the cart 120. After that, the push rod 85 is retracted.

Then, the reversing body 40 is reversed 180 degrees to return the mold 12 upward, and the cart 120 is pulled back to return the product receiver 135 to the position of the arc-shaped guide rail 145. fits into the recess 153 of the movable body 151 from the horizontal direction, so by pushing out the piston rod 155 of the hydraulic cylinder 154 and pushing the movable body 151 upward in an arc shape along the guide rail 145, the product receiver 135 is rotated around a support shaft 137 and tilted, and the cast products, etc. in the product receiver 135 are discharged from the opening 134 to a recovery conveyor (not shown), and then the product receiver 135 is transferred to the cart 120.
Return to horizontal position.

When the receiving body 135 is returned to the position of the guide rail 145, the elevating body 25 is lowered to return the plate receiving portion 53 of the reversing plate 48 to the notch 52 of the fixed beam 16, and the holding arm 55 holds the plate. Release.

Thus, according to the present invention, the mold holding means,
Since we have provided a lifting means, a reversing means, a means for extruding the cast product from the mold, and a means for receiving the cast product, it is possible to automatically perform the die cutting process of the cast product for the mold that is conveyed in the casting line with the opening facing upward. It became possible to do so.

[Brief explanation of drawings]

The figures relate to the present invention; FIG. 1 is a plan view of a casting line, FIG. 2 is a front view showing an embodiment of the cutting device of the present invention, and FIG. 3 is a sectional view taken along the line -- in FIG. Figure 4 is a plan view of the plate holder, Figure 5
The figure is a sectional view taken along the line -- in Fig. 3, Fig. 6 is a sectional view taken along the - line in Fig. 5, Fig. 7 is a partially cutaway side view of the tilting drive mechanism, and Fig. 8 is a sectional view of the product extrusion mechanism. be. 11... Mold conveyance plate, 12... Mold, 1
5... Conveyance path, 25... Lifting body, 27... Lifting drive mechanism, 40... Reversing body, 41... Reversing drive mechanism, 49... Plate holding mechanism, 84... Through hole, 85... Extrusion rod , 86... Product extrusion mechanism, 1
27... Advance/retreat drive mechanism, 135... Product receiver.

Claims (1)

[Claims] 1. An elevating body that is raised and lowered by an elevating drive mechanism is provided on the conveyance path of the mold conveying plate, and a reversing body that is reversed by a reversing drive mechanism is provided on this elevating body, and the mold conveying plate is A plate holding mechanism for holding the plate is provided, and the elevating body is provided with a product extrusion mechanism for extruding the cast product from the mold when inverted, and the elevating body is moved forward and backward from a position below the inverting body to a position outside the elevating area of the inverting body. A die cutting device for casting, characterized by being provided with a product receiver that is moved forward and backward by a drive mechanism.