JPH0230783B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an insert feeding device for a molding machine such as a die casting machine or an injection molding machine.

Conventionally, in a molding machine, depending on the type of molded product, it has been necessary to load a cylindrical insert into the molded product. For example, it has been necessary to install a cylindrical steel insert in an aluminum cylinder block for an automobile where the piston slides. When producing cylinder blocks etc. by die casting, before casting the molten aluminum into the mold cavity, the inserts as described above are inserted into the desired locations of the open mold, and the inserts are inserted into the mold. It was necessary to pour molten metal after tightening.

However, when loading the insert into a mold, depending on the type of molded product, the insert must be loaded into a relatively narrow space in the mold, and the insert holding and feeding section of the insert feeding device may not be too large. There was a drawback that I couldn't do it.

The present invention has been made to eliminate these drawbacks, and the insert loading portion of the mold is relatively narrow, and the insert holding device of the insert feeding device has a relatively narrow insert loading portion.
It can be used even when it is necessary to place the supply part into the mold and load the insert, and the insert can be loaded reliably and easily.

Next, the present invention will be explained with reference to an embodiment shown in the drawings.

In the plan view of the entire apparatus shown in FIG. 1, 3 is a molding machine that is a die-casting machine, 4 is a fixed platen, and 5
1 is a movable platen, 6 is a fixed mold, 7 is a movable mold, 8 is a column, 9 is a mold clamping device, and 10 is an injection device.

11 is an insert fitting stocker, 12 and 13 are first and second insert delivery devices, and 14 is a rotatable frame 15 with an insert feeding device 16.
and a product take-out device 17 are respectively attached so as to be movable back and forth; 18 is a water tank for cooling the taken-out molded product 81; 19;
is a trimming press that removes burrs, biscuits, etc. attached to the molded product 81.

In the insert metal stocker 11, reference numeral 20 denotes a moving platform for vertically placing a plurality of cylindrical inserts 21 in the grooves 22 in a plurality of rows, and both ends of each groove 22 of the moving platform 20 are open. are doing. The moving table 20 is moved by the action of the cylinder 23.
It can be moved horizontally in the horizontal direction in FIG. 1 by the pitch of the grooves 22. 24 is a frame, and an insert extrusion device 26 is attached to a part of the frame 24 via a bracket 25 so as to be able to face one end of the groove 22, and the inserts 21 are sequentially inserted one by one from the groove 22. It was made so that it could be extruded from the opposite side of the groove 22.
The frame 24 can be moved up and down with respect to the frame 28 by the action of a cylinder 27, and the moving table 2
0 can be positioned at a desired height.

The insert delivery device 12 was arranged on the other end side of the groove 22 of the moving table 20 so as to face the insert extrusion device 26 .

The insert delivery device 12 is arranged in the groove 2 of the moving table 20.
2 is received in a vertical position, turned into a horizontal position, and transferred to the next insert delivery device 13.
It has the effect of passing it on to.

The insert delivery device 13 receives the insert 21 from the insert delivery device 12 in a horizontal state, and then delivers the insert 21 to the insert supply device 16 in a horizontal state.

As shown in FIGS. 2 and 3, the insert delivery device 13 includes a double cylinder 50 that rotates horizontally about a vertical shaft 50b provided on a frame 49 by the operation of a cylinder 50a. Inside the cylinder body 51 is an outer piston rod 52.
and an inner piston rod 53 are slidably provided, and as shown in FIG.
3a to the rear end of the outer piston 52a and move the inner piston 53a forward, the outer piston 52a will also move forward at the same time, but only the outer piston 52a will move forward than the inner piston 53.
It is possible to move the piston forward regardless of a, and conversely, when retracting, the outer piston 52a is moved back and the inner piston 53a is also moved back at the same time. The aforementioned inner rod 46 for holding the insert is attached to the tip of the inner piston rod 53, and the outer rod 4 for pushing out the insert is attached to the tip of the outer piston rod 52.
7 was installed. 54 and 55 are brackets provided on the insert transfer side, and the positions of the brackets 54 and 55 with respect to the insert transfer position are the insert loading position of the movable mold 7, which will be described later, and the fixed mold 6 and the movable mold 7 when the mold is opened. The position can be adjusted according to the distance between the two.

That is, two brackets 54 and 55 are provided facing each other in a direction perpendicular to the insert delivery direction at the insert delivery position from the insert delivery device 13 to the insert supply device 16, and the inner rod of the insert delivery device 13 is placed at the insert delivery position. 46 and the axis of the insert holding member 74 which is the insert receiving part of the insert supply device 16, and the dimension between the axis of the insert delivery device 13 and the insert receiving part 74 and one of the brackets 55, The dimension between the contact surface for the positioning member of the insert supply device in the mold 7 and the insert loading position can be made to match.

For example, the insert supply device 16 is in a horizontal state.
It consists of a cylinder 56 attached to a rotating frame 15 that rotates 90 degrees, and an insert delivery part 58 attached to the tip of a piston rod 57 of the cylinder 56. The rotation frame 15 is provided so that its height can be adjusted.

As shown in FIGS. 4 and 5, the insert delivery section 5
8 is a frame 59 attached to the tip of a piston rod 57, two parallel cylinders 60 slidably attached at right angles to the frame 59, a piston rod 61 of the piston 60, and a frame 62 on the head end side of the cylinder 60. The guide rod 63 is integrally attached to the frame 59 via the frame 59, and is slidably attached to the frame 59. cylinder 6
0 was provided so that when inserted between the fixed mold 6 and the movable mold 7, the rod end coincided with the axial direction of the machine and the rod end side faced the fixed mold 6.
60a is a gasket provided between the cylinder 60 and the frame 59, which allows the cylinder 60 to float slightly. At the tip of the guide rod 63,
A member 64 having a relatively thin rectangular cylindrical portion 64a and a bottom portion 64b is rotatably attached, and the member 64
A trunnion-shaped cylinder 65 is attached to the frame 62, and a pin 6 is attached between the tip of the piston rod 66 of the cylinder 65 and a part of the member 64.
7, it can be rotated 90 degrees. 68
is a bearing. A cylinder 69 is provided at the bottom 64b of the member 64 in a direction perpendicular to the axis of the guide rod 63, and an insert extrusion member 71 is provided at the tip of the piston rod 70 of the cylinder 69 so as to be movable within the rectangular cylindrical portion 64a. I installed it.
A cylindrical protrusion 72 is provided on the insert receiving portion of the member 64, and a cylindrical insert holding member 74 having a tip wall 74a is slidably attached around the protrusion 72 via a packing 73. Ta. The insert pushing member 71 was provided so as to hang immediately in front of the rear end flange 74b of the insert holding member 74, and a compression spring 75 was provided between the inner wall of the tip wall 74a of the insert holding member 74 and the protrusion 72 of the member 64. . Tip wall 74a of insert holding member 74
A convex engaging portion 74c is provided at the center of the outside of the insert 21 attached to the movable mold 7.
It can be engaged with a concave engaging portion 76a provided on a cylindrical core 76 to be loaded. insert 2
1 is held closely around the insert holding member 74, with the engaging portions 74c and 76a engaged, and the insert pushing member 71 is held in close contact with the insert holding member 74, as shown in FIG. It was made to be extruded around the core 76 by the forward movement of the core 76. However, in this case, in order to prevent the insert 21 from falling from the core 76, the insert holding pin 80 is
is provided so that it can be moved in and out of the movable mold 7. Note that when the insert 21 is pushed out by the insert pushing member 71, the insert holding member 7 is pushed out by the action of the compression spring 75.
4 also moves forward until the engaging parts 74c and 76a engage with each other.If there is room for installation, compressed air may be introduced from the bottom of the protrusion 72 instead of the compression spring 75. , insert extrusion member 71
When the insert holding member 74 moves forward, a force may be applied to the insert holding member 74 in the direction of sliding the insert holding member 74 forward. A convex engaging portion 64c provided at the tip of the rectangular tubular portion 64a of the member 64
As shown in FIGS. 4 and 5, the movable mold 7 can be engaged with an engaging portion 7a provided on the inner wall surface of the cavity at its forward limit.

As shown in FIG. 1, the product take-out device 17 includes a cylinder 77 attached to the rotating frame 15 immediately below the insert supply device 16, a conventional product chuck portion 78, and the like. 79 is a guide rod. Here, an example was shown in which the product take-out device 17 and the insert supply device 16 were attached to the same rotating frame 15, but this is different from the example in which they are each attached to separate rotating frames 15 and rotated separately. You can do it like this. In the product chuck part 78,
A cylinder was installed to rotate the product chuck part 78 by 90 degrees.

Next, the operation of the device will be explained.

First, as shown in FIG. 1, with the insert receiving portion 29 of the insert delivery device 12 vertical, the cylinder 26 is operated to move one insert 21 onto the moving table 2 of the insert fitting stocker 11.
0 to the insert receiving part 29.

Next, the insert receiving portion 29 is placed in a horizontal state. Then, the double cylinder 50 of the insert delivery device 13 facing the insert receiving part 29 is advanced, the inner rod 46 and the outer rod 47 are advanced, and inserted into the insert receiving part 29, and the tip of the inner rod 46 is moved forward. The insert 21 is inserted into the insert 21 to receive the insert 21.

After lowering the insert receiving part 29 slightly to make it easier to take out the insert 21, the outer piston rod 52 and the inner piston rod 53 of the insert delivery device 13 are moved back, and the insert 21 is taken out from the insert receiving part 29. Note that the insert receiving portion 29 is then returned to the vertical state to be ready to receive the next insert 21.

Next, as shown in FIG.
to operate the double cylinder 50 in a horizontal position.
It is rotated 90 degrees to face the insert feeding device 16, and the insert feeding device 16 is also directed to the insert delivery device 13.

In this state, pressure oil is supplied to the head end side of the cylinder 60 of the insert delivery section 58. Then, first, the piston rod 61 with the least resistance moves forward, and the tip of the piston rod 61 hits the bracket 54 and stops. If pressure oil is continued to be supplied to the head end side in this state, cylinder 6
0 moves forward toward the head end, and the member 6
The engaging portion 64a at the tip of the bracket 4 hits the bracket 55 and stops. At this time, insert supply device 16
The center line of the insert receiving portion coincides with the center line of the insert holding portion of the insert delivery device 13.
This state is shown in FIG.

When the state shown in FIG. 2 is reached, the double cylinder 50
Pressure oil is supplied to the head end side of the insert 21, and the inner piston rod 53 and outer piston rod 52 are advanced to advance the insert 21. Then, the tip of the inner rod 46 comes into contact with the tip wall 74a of the insert holding member 74, and the engagement portion 4
6b and 74c are stopped in a state where they are engaged with each other.
If pressure oil is continued to be supplied in this state, only the outer piston rod 52 will move forward, and the outer rod 47 will push out the insert 21 and move the insert 21 to the outer periphery of the insert holding member 74.

When the insert 21 is transferred to the insert holding member 74, the inner rod 46, outer rod 47, etc. of the insert delivery device 13 are returned to their original states to prepare for receiving the next insert 21.

During this time, the movable mold 7 and the fixed mold 6 are opened.
During this time, the product chuck portion 78 of the product take-out device 17 is inserted, and the molded product 81 injected from the movable mold 7 is grabbed and taken out of the machine.

Next, the cylinder 6 of the insert supply device 16
After supplying pressure oil to the rod end side of 0 and retracting the piston rod 61 and the cylinder 60 itself, the cylinder 56 is operated and the insert delivery section 58
can be retracted. This state is shown in FIG.

Subsequently, the rotating frame 15 is rotated clockwise. However, during this rotation, the rotation of the product ejecting device 17 is stopped at the water tank 18 section, and the product chuck section 78 is rotated 90 degrees around the axis of the product ejecting device 17, so that the molded product 81 is placed downward. Then, lower the product chuck 78 and place the molded product 81 in the water tank 18 to cool it. After the molded product 81 is lifted from the water tank 18, the rotating frame 15 is further rotated to orient the insert delivery section 58 in a direction perpendicular to the die-casting machine. In this state, the cylinder 77 of the product take-out device 17 is operated to move the molded product 81 to the right product take-out device in FIG. 2, where it is separated from the product chuck portion 78. This molded product 81
is carried to the trimming device 19, where it is trimmed, and then carried to a desired position.

On the other hand, in the insert supply device 16, the cylinder 56 is operated to advance the insert delivery section 58 to a desired position between the movable mold 7 and the fixed mold 6, which are being opened. At this time, the insert delivery section 58 moves the guide rod 6 due to the operation of the cylinder 65.
Rotate it 90 degrees around the axis line number 3.

As shown in FIGS. 4 and 5, the cylinder 60 is operated in the forward position to bring the tip of the piston rod 61 into contact with the fixed mold 6, and the cylinder 60
The member 64 is moved forward toward the movable mold 7, and the engaging portion 64c of the member 64 is engaged with the engaging portion 7a of the movable mold 7. Then, the position where the insert 21 is held coincides with the centerline position of the core 76.

Subsequently, the cylinder 69 is operated to advance the insert pushing member 71 upward to advance the insert 21, and the insert holding member 74 itself is also advanced by the action of the compression spring 75, so that the engaging portion 74a is engaged with the engaging portion 76a of the core 76. If the cylinder 69 continues to move forward, only the insert 21 will move forward and the core 76 will move forward.
is pushed deep into the periphery. Note that the engaging portion 64
c, 7a and the engaging portions 74c, 76a, even if the core is slightly twisted, the gasket 60a provided between the cylinder 60 and the frame 59
Furthermore, due to the floating action of the packing 73 provided between the protrusion 72 and the insert holding member 74, the engagement action can be performed smoothly and reliably.

Once the insert 21 is pushed around the core 76, the pin 80 is advanced to hold the insert 21 so that the insert 21 does not fall.

Next, the cylinder 69 is actuated to retract the insert holding member 74, and the cylinder 60 is actuated to retract the piston rod 61 and member 64. Then, the cylinder 56 is operated to retract the insert delivery section 58 out of the die-casting machine. Then, the member 64 is moved 90 degrees by the operation of the cylinder 65.
Rotate it once and put it back in place, then insert the next insert 2.
Prepare to receive 1.

When the insert delivery section 58 comes out of the die-casting machine, the mold is clamped to prepare for injection of molten metal. However, at this time, the lower end of the insert 21 around the core 76 rests on a part of the fixed mold 6 and will not fall, so the pin 80 is moved back and the molded product 81 is molded. Try not to get in the way. Then, in this state, the molten metal is injected.

In the above embodiment, the insert 21 is held on the outer peripheral surface of the insert holding member 74, but in this case, the insert 21 is held on the inner peripheral surface of the cylindrical insert holding member 74. The insert extrusion member 71 is provided through the hole in the bottom of the member 74, and the insert extrusion member 71
The flange portion may be provided in front of the bottom of the insert holding member 74, so that a force in the direction of always advancing the insert holding member 74 from the rear may be applied.

Further, in the embodiment described above, the insert 21 is received in a horizontal state by the insert supply device 16 and inserted into the movable mold 7 in a vertical direction, so a cylinder 65 for rotating the member 64 is provided. This example shows that if the insertion direction of the insert into the movable mold 7 is horizontal, the member 64
There is no need to provide a cylinder 65 for rotating the .
Of course, when charging the insert 21 into the fixed mold 6 or into both the movable mold 7 and the fixed mold 6, this can be easily done by slightly changing the structure or behavior of the insert delivery section 58. I can do it.

As described above, according to the present invention, since the structure as described in the claims is adopted, it is possible to reliably and easily load the mold insert. Even when it is necessary to insert the insert holding and feeding section of the insert feeding device into the mold and load the insert into a relatively narrow space in the mold,
Loading can be done reliably, easily, automatically, and safely.

Further, in the present invention, a member consisting of a rectangular cylindrical portion having an engagement portion with the inner wall surface of the cavity of the mold and a bottom portion having a cylindrical protrusion is provided at the tip of the insert feeding device, and the insert holding member is slidably provided around the protrusion via a gasket, so when the insert feeding device is inserted between the molds, the insert holding portion is always held at the specified position by engaging with the mold. After that, the tip of the insert holding member can be engaged with the core for insert loading, and the insert can be delivered to the core for insert loading. This can be done easily by the floating action of the seal between the member and the protrusion. These factors mean that if the insert feeding device becomes larger, considerable vibration will be generated when the device stops moving, and it will take a considerable amount of time for the vibration to subside, which will affect the time cycle and productivity. Therefore, it is extremely effective in overcoming these drawbacks.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a plan view of the entire device, Fig. 2 is a plan view of the insert delivery device, Fig. 3 is a front view thereof, and Fig. 4 is a plan view of the insert feeding device. FIG. 5 is a sectional view taken along the - line in FIG. 4. 3...Molding machine, 4...Fixed plate, 5...Movable plate,
6... Fixed mold, 7... Movable mold, 11... Insert fitting stocker, 12, 13... Insert delivery device, 14... Insert supply and product take-out device, 30... Rotating frame, 16... Insert supply device, 17... Product removal device, 21...
Insert, 21a... Chamfered portion, 23, 50a,
56, 60, 65, 69, 77...Cylinder, 2
6... Insert extrusion device, 29... Insert receiving part, 46... Inner rod, 46a... Taper part, 47... Outer rod, 50... Double cylinder, 54, 55... Bracket, 58...
Insert delivery part, 60a, 73...Packkin,
61... Piston rod, 63... Guide rod, 64... Member, 71... Insert extrusion member, 74... Insert holding member, 75... Compression spring, 76... Core, 78... Product chuck part,
81... Molded product.

Claims (1)

[Claims] 1. A member consisting of a rectangular cylindrical portion having an engagement portion with the inner wall surface of the cavity of the mold and a bottom portion having a cylindrical protrusion is provided at the tip of the insert feeding device, and at the rear end. A cylindrical insert holding member having a rear end flange portion, a tip wall having an engaging portion for the tip portion of the core to be loaded with the insert, and capable of holding the insert on the circumferential surface is attached to the corner. In the cylindrical part, the insert extrusion member is slidably provided around the protrusion via a gasket, and the insert extrusion member is inserted in the same direction as the sliding direction of the insert holding member in front of the rear end flange of the insert holding member. A member capable of applying a force in the direction of sliding the insert holding member forward when the insert pushing member moves forward is installed between the inner side of the tip wall of the insert holding member and the protrusion of the member. Insert supply device installed in between.