JPH07195440A - Apparatus for preparing injection head of injection molding machine - Google Patents

Abstract

PURPOSE:To hold easily an injection head horizontally and place it in a housing chamber by providing an arm engaging piece on both sides at the front surface or at the lower side in the vicinity thereof, permitting it to be engaged with a side arm at both the sides suspended by a hoist device, and positioning the front of the injection head in a horizontal direction. CONSTITUTION:The device includes dogleg-shaped lateral arm 12 on the upper part of the back surface 2 of an injection head 9, suspending piece 10, mounted frames 20 at both the sides, and an injection mounting device 30 provided with a movable mounting frame 33. Also, mounted at the position in the lower side of the front of the mounted frames 20 or at the rotatable passage of a vertical part 12a about a sleeve 11 is an arm engaging piece 25 to be engaged with the vertical part. In the case of replacing the injection head 9, while inclining the injection head 9 horizontally, the lateral arm 12 is pressed down and passed through the opposite side, then the fulcrum moves from a sleeve 11 to the edge of a claw 21 so as to be balanced with the power of a connector 3 via a contact surface at the vertical part 12a, resulting in a horizontally held state of the injection head 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention hangs any one of a plurality of types of box-shaped pouring heads with a hoist device to move it from a storage room under the floor to a pouring port of a mold at the time of molding, and after use. The present invention relates to an injection head setup device of an injection molding device for returning to a storage chamber.

[0002]

2. Description of the Related Art FIGS. 5 and 6 show a mold 8 of an injection molding machine.
R-RIM (reinforced-reaction injection mold)
ing) and RIM, injection heads 9 and 9a for two kinds of raw materials
The setup method will be described. Each box-shaped injection head is provided with a raw material outlet 1a attached to the injection port of the mold 8 on the front surface 1, and a total of six connectors 3 for supplying the raw material and the hydraulic control liquid to the rear surface 2. The raw material supply is opened and closed internally by controlling the hydraulic pressure of the valve. During the molding process, one injection head 9 is set in the mold 8, and the other injection head 9a is hung by the wire 5 through the opening 7a of the floor 7 located below the mold 8 to the hook in the storage chamber 7b. It has been stored (Fig. 6A). When the injection head 9 is replaced, the loop-shaped wire 5 set on the uppermost connector 3 is hooked on the hook 6 of the hoist device to remove the raw material outlet 1a from the injection opening of the mold 8 and separate it (the same). B), and is stored by being hung from a hook at another position in the storage chamber 7b through the opening 7a (C in the same figure). Next, the injection head 9a is taken out from the storage chamber 7b and set in the mold 8 in the reverse operation procedure.

[0003]

As described above, since it is necessary to manually manipulate the posture of the injection head 9 and the position on the horizontal plane in a state of being suspended by the hoist device, the working time becomes long and the wire is There are problems that the fingers are pinched due to misalignment, they interfere with the hose of the other injection head 9a, and the injection head is easily damaged.

In view of the above points, an object of the present invention is to provide an injection head setup device for an injection molding apparatus which can be easily set up.

[0005]

In order to achieve this object, the present invention provides a plurality of types of box-shaped products having a raw material outlet connected to the injection port of a mold on the front surface and a raw material supply hose connected to the rear surface. In the injection head setup device of the injection molding device for suspending any of the injection heads with the hoist device to move it from the storage room under the floor to the mold and storing it in the storage room after use Injection head mounting device having a movable mounting frame on both sides capable of mounting the injection head, and capable of moving any of them in the horizontal direction toward the hoisting device elevating position; A lifting tool provided with both side arms rotatably supported on both ends of the vicinity in the vicinity of the upper side and locked to the hoist device at the upper end, and provided on the front or both sides of the vicinity, And on both sides A mounting frame that is mounted transversely on the mounting frames on both sides with the injection head supported between the mounting frames, and is suspended by a hoist device on the front side or both sides near the lower side of the mounting frame. It is characterized in that arm engaging pieces are respectively provided for suspending the injection head so as to position the front surface in the horizontal direction by engaging with the side arms on both sides.

[0006]

When the injection head is replaced, the hoist device is used to lock the hanging tool of the injection head used, and the arm engaging pieces are engaged with the side arms so that the front surface of the injection head becomes horizontal. Hang it on the hoist device while tilting it. The empty mounting part of the movable mounting frame is moved to the hoisting device up and down position and made to stand by. Support injection head. Next, the injection head to be replaced is moved to the lifting position of the hoist device by the movable mounting frame, the lifting device is locked by the hoist device, and the hoist device is lifted to tilt the front in the vertical direction. Install.

[0007]

1 to 3 show an injection head setup apparatus of an injection molding apparatus according to an embodiment of the present invention, and the same reference numerals as those used in FIGS. 5 and 6 denote the same or equivalent parts. The setup device according to the present invention is a sleeve attached to the upper part of the back surface 2 of two box-shaped injection heads 9 and 9a (see FIG. 4) (FIG. 1 shows a state in which the injection head is tilted 90 ° from the molding operation). Lifting tool 10 having side arms 12 on both sides rotatably supported by 11, and an upper arm 13 connecting both upper ends thereof with locking holes 13a (FIG. 2A)
And an L-shaped claw 21 for supporting from below the flange portions 1b (FIG. 2D) projecting from both sides of the vertical center portion of the injection head 9 close to the front face 1, and the connecting frame 23 Mounted frames 20 on both sides connected to each other by
(FIG. 2C), and an injection head mounting provided with movable mounting frames 33 on both sides supported by four wheels 32 guided by rails 31 to 31c on both front and rear sides so as to be horizontally movable. The storage device 30 (FIG. 2B).

The side arm 12 of the hanger 10 is bent in a dogleg shape, and vertically tilts upward from the sleeve 11 downwardly from the sleeve 11 in a state where the front face 1 is laid down in a horizontal state and then extends vertically upward. The portion 12a is formed.

The sleeve 11 is located at a position corresponding to a lower portion of the front surface 1 than the central portion of the mounting frame 20 in the vertical direction.
An L-shaped arm engagement piece 25 that engages with the vertical portion is pivotally attached to the rotation path of the vertical portion 12a around the center of the pivot portion so as to be rotatable along the rotation path. Further, the claw 21 is formed with a bolt insertion hole 26 for inserting the bolt 29 into the bolt insertion hole of the flange portion 1b so as not to be displaced relative to the front surface 1.

The arm engaging piece 25, as shown in FIG.
The side arm 12 is formed in an L-shape having a contact surface 25a with the vertical portion 12a, and its corner portion is rotated by the hinge 25b about the vertical axis in the mounted frame 20 in the horizontal positioning state. It is pivotally attached. The arm engagement piece is further slidable along the inner surface of the mounting frame 20 and is protruded from the cutout 28.
Connecting frame 2 for connecting the stopper plate 25d for restraining 5c and the stopper plates 25d of the arm engaging pieces 25 on both sides
5e and the connecting frame 23, and a lock mechanism including a spring 25f that holds the stopper plate 25d at the lock position is attached. Thereby, the vertical portion 12a
The arm engaging piece 25 rotates as it hits the contact surface 25a from the direction of arrow A, and once it passes, the arm engaging piece 25 is restrained by the stopper plate 25d from rotating in the opposite direction, that is, from the lower side to the upper side of the front surface 1. It has become. When the connecting frame 25e is unlocked in the arrow A direction in this locked state, as shown in FIG. 7C, the arm engaging pieces 25 on both sides can rotate in the direction opposite to the arrow A, so that the side arm 12 is moved. It is possible to escape.

As shown in FIG. 2B, on the mounting frame 33, the mounting frames 20 of the injection heads 9 and 9a are mounted on both ends 33a and 33b, respectively, and along the rails 31 to 31c. A cylinder 34 is attached so as to be driven to travel. Thereby, the opening 7c of the floor 7
Both ends 33a and 33b are movable (see FIG. 4).

The operation of the injection head setup device thus constructed will be described with reference to FIG. The molding process is performed in a state where the injection head 9 equipped with the hanging tool 10 is attached to the mold 8 (FIG. 4A). When replacing the injection head 9a, the hook 6 of the hoist device is used to suspend the hook 1 of the injection head 9.
The locking hole 13a of No. 0 is locked and raised, and the mounted frame 20 is set (B in the same figure). Further, by setting the claw 21 on the flange portion 1b and inserting the bolt 29, the injection head 9 is tilted substantially horizontally while the displacement of the mounting frame 20 is prevented, and the side arm 12 is inserted. Is pressed against the contact surface 25a and pushed down, and is passed to the opposite side.

As a result, the fulcrum is moved from the sleeve 11 to the edge 21a of the pawl 21, and the vertical portion 12 is moved.
The force in the direction of arrow B is generated in a through the contact surface 25a in the locked state, and is balanced with the force in the direction of arrow C from the connector 3 to which the hose is connected, and the injection head 9 is stably held in a horizontal state. It At the same time, the vacant end 33a of the mounting frame 33 is moved below the opening 7c (Fig. C).
Subsequently, the pouring head 9 is lowered as it is along the mold 8 by the hoist device (D in the figure), and the mounting frame 20 is placed.
Are placed through the mounting frames 33 on both sides (E in the figure).

Instead, the other end 3 of the mounting frame 33
3a is moved below the opening 7c (F in the same figure), the hook 6 of the hoist device is used to lock the suspending tool 10 of the injection head 9a, and it is lifted up along the mold 8 as it is, and once above this mold. At the position, the arm engaging piece 25 is unlocked, the mounted frame 20 is removed, the front surface 1 is returned in the vertical direction, and further lowered to be attached to the mold 8.

Instead of the above-mentioned embodiment, it is also possible to fix the mounting frame and the arm engaging piece to the front of the injection head, that is, on the same plane as the front or slightly to the rear. . As the arm engaging piece, it may be possible to change the structure or the structure of the hanger to another method. The injection head mounting device can be configured to mount three or more, if necessary.

[0016]

As described above, according to the first aspect of the present invention, the injection head can be easily held horizontally and mounted on the mounting frame of the storage chamber by the combination of the suspending tool and the mounting frame. Moreover, since the mounting frame can be moved to the opening position, the horizontal movement work of the injection head is unnecessary or slight, it is possible to move up and down along the mold position, and the storage becomes a mountable type, and the setup operation can be performed. It will be easy. Therefore, the work efficiency and safety of the worker are improved, and the area of the opening can be reduced.

According to the second aspect of the present invention, the setup device portion such as the mounting frame can be assembled separately from the injection head, so that the additional portion of the injection head is reduced and the structure is not bulky. You can It is convenient for maintenance.

According to the third aspect of the present invention, when the front surface of the injection head placed on the injection head is tilted in the horizontal direction, the vertical portion of the side arm easily engages with the arm engaging piece to move the injection head. It is possible to easily hang it horizontally.

[Brief description of drawings]

1 shows an injection head setup device of an injection molding apparatus according to the present invention, FIG. 1A is a side view of an injection head portion,
FIG. 2B is a schematic perspective view of the injection head mounting device.

2A and 2B show the configuration of each part of the setup device, FIG. 2A is a front view of a lifting tool, FIG. 2B is a plan view of an injection head mounting device, and FIG. 2C is a plan view of a mounting frame. FIG. D is a vertical cross-sectional view of the mounted frame in a state of being set on the injection head.

FIG. 3 shows a detailed structure of an arm engaging piece of the mounted frame, FIG. 3A is a perspective view, FIG. 3B is a plan view, and FIG.
[Fig. 6] is a plan view illustrating the operation.

FIG. 4 is a view for explaining the operation of the setup device, wherein the upper stage is a side view and the lower stage is a plan view.

FIG. 5 is a side view of the injection head for explaining the operation by the conventional setup device.

6A and 6B are views for explaining a work process of the setup apparatus according to FIG. 5, in which an upper stage is a side view and a lower stage is a plan view.

[Explanation of symbols]

 1 Front 2 Back 7 Floor 7c Opening 9 and 9a Injection head 10 Lifting tool 12 Side arm 20 Placed frame 21 Claw 25 Arm engagement piece 33 Placement frame

Claims (3)

[Claims] 1. An underfloor by suspending any one of a plurality of box-shaped injection heads having a raw material outlet connected to a mold inlet on the front side and a raw material supply hose connected on the rear side with a hoist device. In the injection head setup device of the injection molding device for moving from the storage chamber to the mold and storing it in the storage chamber after use, a plurality of injection heads can be placed in the storage chamber and any of them can be placed. An injection head mounting device having movable mounting frames on both sides capable of horizontally moving an object toward an elevating position of the hoist device, and rotatably provided at both ends of the back surface or an upper part near the back surface. Supported by each
And a lifting tool having side arms on both sides that are locked to the hoist device at the upper end, and support the injection head between the mounting frames provided on both sides of the front surface or in the vicinity thereof and on both sides. And a placed frame that is placed transversely on the placing frames on both sides in a state where the two sides are hung by the hoist device on both sides of the front surface or near the lower side. An injection head setup device for an injection molding apparatus, comprising arm engagement pieces for respectively suspending the injection head so as to position the front surface in a horizontal direction by engaging with the arms. 2. The mounting frame is configured separately from the injection head, and is provided with a claw for supporting the flange portions on both sides of the injection head from below and an arm engaging piece. An injection head setup device for an injection molding apparatus according to claim 1. 3. The side arm has a vertical portion extending vertically downward from the arm engaging piece in a horizontal state of the front surface, and the arm engaging piece is capable of abutting the vertical portion so that the side arm can rotate. And also has a contact surface rotatable about a vertical axis in the horizontal state of the front surface, and the rotation of the contact surface from the lower front to the upper front is manually operated to be unlocked. The injection head setup device for an injection molding apparatus according to claim 1 or 2, further comprising a lock mechanism for restraining the injection head.