JP3134183B2 - Cassette mold change aid - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette mold changing aid for attaching and detaching a cassette mold to and from a base plate in a cassette type injection mold apparatus.

[0002]

2. Description of the Related Art In exchanging cassette dies, when exchanging cassette dies by an operator's hand without using an automatic cassette dies exchanging device by a robot or the like, conventionally, the cassette dies are placed near a base plate on which the cassette dies are mounted. A relay stand on which one end of the cassette mold can be placed is provided, and a roller guide capable of transporting the cassette mold to the vicinity of the base plate is provided. However, since there is only a relay place where the cassette mold can be temporarily placed when exchanging the cassette mold, after all, the operator replaces the cassette mold by relying on the strength of the worker with the hand of the worker. Had to be done.

[0003]

There are various types of cassette molds, and a single cassette mold is about 1-2 k.
g is relatively light, some cassette molds are about 2
Some are as heavy as 0 kg. In the case of a light cassette mold, it does not matter much, but in the case of a heavy cassette mold, replacement of the cassette mold is performed in a narrow place between the fixed mold and the movable mold in the mold open state. Therefore, the workability was poor, and the cassette mold was sometimes damaged.
In addition, since the temperature of the cassette mold is controlled at about 60 to 70 ° C., there is a risk of being burned if the cassette mold is held with bare hands.

[0004] Of course, an automatic cassette die changing device using a robot or the like is also possible, but it is not easy to adopt because equipment introduction requires high cost.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a cassette mold replacement assisting tool according to the present invention is a cassette for temporarily mounting and holding a cassette mold so as to reduce a burden on an operator. mold support table is mounted for <br/> rotationally displaced in the horizontal plane to a mounting base which is fixed to the platen of a molding machine via an arm of an articulated type.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The cassette mold changing aid of the present invention is capable of adjusting the height in a vertical direction on a mounting base fixed to a platen of a molding machine equipped with a cassette type injection mold apparatus. Attach the angle, the angle ,
One end of the first arm via a first pivot in a horizontal plane
And a second arm at the other end of the first arm.
Of one end is rotatably connected in a horizontal plane via a second shaft
And, at the other end of the second arm, one end of the third arm first
Through the third shaft and rotatably connected in the horizontal plane, the other end of the third arm, via a fourth axis cassette mold support table
The cassette mold support is provided with a cassette mold holding means for holding the cassette mold.

In the cassette mold changing aid of the present invention, the third shaft is provided so as to be freely inserted and removed so that the third arm can be detached from the second arm for the reason described later. The first arm is provided with a first through hole in a range overlapping with the angle, and the first arm has a first through hole.
The second arm is provided with a second through hole in a range that does not overlap the first arm, and the third arm is detached. ,
By inserting one end of the U-shaped connecting rod into the first through hole and the communication hole and inserting the other end into the second through hole,
The first arm and the second arm can be fixed at a fixed angle with respect to the angle.

The cassette mold holding means is provided at both ends of the cassette mold support base, and a guide surface is formed on a side surface thereof so as to be in contact with both ends of the parting line surface of the cassette mold. A pair of blocks on which a guide pin and a positioning pin are erected on the upper surface, and can be moved up and down by the guide pin , and can be rotated in a horizontal plane.
It is rotatably supported on the ability cassette die lockable recess the outer shape of the cassette mold is positioned by the positioning pin in contact with the guide surface is formed 1
And a pair of fixed plates.

Further, the cassette mold holding means is provided at both ends of the cassette mold support base, and a guide surface is formed on a side surface thereof, which is in contact with both ends of the parting line surface of the cassette mold. A pair of blocks each having a groove in the upper part, and a fixed block in which one end is formed in the groove and the other end is formed with a locking portion capable of locking the outer shape of the cassette mold. It may be done.

When the molding operation is performed after exchanging the cassette die by the cassette die exchanging aid configured as described above, during the molding operation, the cassette die exchanging assisting tool can be moved to any position within the movable range of the arm. any horizontal plane to plane position
If it is held rotatable and movable, the molding operation will be hindered. However,
It is not desirable to attach or remove the cassette mold changing aid to the platen of the molding machine every time the cassette mold is changed. Therefore, during the molding operation, the minimum disassembly of the cassette mold changing aid which does not hinder the molding operation, that is, the third arm is detached from the second arm, and the first arm and the second arm since the arm is rotating <br/> rotation possible within the horizontal plane, preferably allowed to fixed at a certain angle with respect to angle.

[0011]

An embodiment will be described with reference to the drawings. As shown in FIG. 1, the mounting base 1 of the cassette mold changing aid of the present invention is mounted on a platen 51 (not shown in FIG. 1, not shown in FIG. 1) of the molding machine by bolts 16 (only one is shown) through a counterbore 1a. 2 (see FIG. 2). Here, the cassette mold replacement assisting tool of the present invention can be used by attaching to either the fixed platen or the movable platen of the molding machine, but the cassette mold 50 used in the cassette type injection molding mold apparatus is Workability (usability) because the movable-side cassette mold is generally heavier than the fixed-side cassette mold
In the above, it is preferable to attach to the movable side platen.

A first support plate 17 is provided on the upper end of the mounting base 1.
Are fixed by bolts 18, and height adjustment bolts 19 are supported in a state where the first support plates 17 are vertically penetrated. The screw portion 19 of the height adjusting bolt 19
a is screwed and the height 2 can be adjusted vertically by rotating the height adjustment bolt 19.
Are attached to the mounting base 1 by bolts 20 through the elongated holes 2b. Further, a second support plate 21 is fixed to the left side surface of the mounting base 1 by bolts 18, and an anti-rotation bolt 22 is screwed to the second support plate 21. The distal end 22a is in contact with the left side surface of the angle 2. This anti-rotation bolt 22
Is provided to prevent the posture of the angle 2 from shifting in the screw tightening direction when the angle 2 is mounted on the mounting base 1 with the bolt 20.

[0013] The angle 2 one end of the first arm 3 is rotatably connected in the horizontal plane about a first axis 7. The first arm 3 is provided with a first through-hole 3a in a range overlapping with the angle 2, and the angle 2 is provided with a communication hole 2a communicating with the first through-hole 3a. A groove 7a is formed on the first shaft 7, and
Is a screw hole 2c provided on the side of the angle 2.
And is fixed to the angle 2 by being fixed by the set screw 23 through the.

[0014] The other end of the first arm 3 one end of the second arm 4 is rotatably connected in the horizontal plane about a second axis 8. The second arm 4 is provided with a second through hole 4 a in a range not overlapping with the first arm 3. Second
The shaft 8 can be freely inserted and removed so that the second arm 4 can be detached from the first arm 3.

[0015] The other end of the second arm 4 one end of the third arm 5 are rotatably connected in a horizontal plane about a third axis 8. The third shaft 9 can be freely inserted and removed so that the third arm 5 can be detached from the second arm 4.

[0016] The other end of the third arm 5 is provided with rotatably fourth cassette mold support base 6 is in the horizontal plane about the axis 10 of the cassette mold support base 6, the cassette gold Type 5
A cassette mold holding means for holding 0 is provided. 4th
The shaft 10 has a groove 10a formed therein, and the fourth shaft 1
0 is fixed to the third arm 5 by being fixed by a set screw 24 via a screw hole (not shown) provided on a side portion of the third arm 5.

A first embodiment of the cassette mold holding means will be described. As shown in FIGS. 1 and 3,
A pair of blocks 11 are provided at both ends of the cassette mold support 6. In the pair of blocks 11, a guide surface 11a is formed on a side surface portion to contact both ends of the parting line surface 50a of the cassette mold 50, and a guide pin 11b and a positioning pin 11c are erected on the upper surface portion. I have.
A pair of fixed plates 12 having guide holes 12a, positioning holes 12b, and recesses 12c capable of locking the outer shape 50b of the cassette mold 50 are formed on the upper surfaces of the pair of blocks 11 (see FIG. 1). FIG. 3A). The pair of fixing plates 12 are formed in the guide holes 1 by the guide pins 11b.
2a is pivotally supported and can be moved in the vertical direction.
It is rotatable in the plane (the state shown in FIG. 3B), and is positioned by fitting the positioning holes 12b into the positioning pins 11c in a state where the cassette mold 50 is in contact with the guide surface 11a. Can hold the cassette mold 50 by locking the outer portion 50b of the cassette mold 50 (the state shown in FIG. 3C).

A second embodiment of the cassette mold holding means will be described. As shown in FIG. 4A, a pair of blocks 13 is provided at both ends of the cassette mold support base 6. The pair of blocks 13 has a guide surface 13a which is in contact with both ends of the parting line surface 50a of the cassette mold 50 on a side surface portion, and a groove portion 13b at an upper portion.
Is provided. The cassette mold 50 has the guide surface 13a
In this state, one end of the locking portion 14a of the fixed block 14 is locked in the groove 13b, and the other end of the locking portion 14a is locked in the outer portion 50b of the cassette mold 50. 50 can be held (the state of FIG. 4B).

Next, the operation will be described. First, a case where the cassette mold 50 is attached to a cassette mold storage recess (not shown) of the base plate 52 of the cassette type injection molding mold apparatus will be described. In the cassette mold replacement assisting tool shown in FIG. 1, the fixing plate 1 is held in a state in which both ends of the parting line surface 50a of the cassette mold 50 are in contact with a pair of blocks 11 of the cassette mold support base 6.
The outer portion 50b of the cassette mold 50 is formed by the second concave portion 12c.
And the cassette mold 50 is held. With the cassette mold 50 held by the cassette mold exchange assisting tool, the arms 3, 4, 5, and the cassette mold support 6 are rotated around the shafts 7, 8, 9, and 10, and the cassette mold is rotated. The cassette mold 50 is carried to the cassette mold accommodating concave portion of the base plate 52 in the mold open state, and the insertion portion 50c of the cassette mold 50 is inserted to fix the cassette mold 50 to the cassette type injection molding mold apparatus. With the cassette mold 50 fixed to the cassette-type injection mold apparatus, the concave portion 12c of the fixed plate 12 is provided.
Is separated from the outer portion 50b of the cassette mold 50. Since the cassette mold changing aid is movable, it is retracted out of the cassette type injection mold apparatus. This operation is similarly performed for the fixed-side cassette mold and the movable-side cassette mold.

Next, a case where the cassette mold 50 is removed from the cassette mold accommodating recess of the base plate 52 of the cassette type injection mold apparatus will be described. In a state in which the cassette mold 50 is not held, the arms 3, 4, 5, and the cassette mold support 6 are rotated around the shafts 7, 8, 9, and 10, so that a pair of the cassette mold supports 6 is rotated. Both ends of the parting line surface 50 a of the cassette mold 50 are brought into contact with the block 11, and the outer shape 50 b of the cassette mold 50 is locked by the concave portion 12 c of the fixed plate 12 to hold the cassette mold 50. The cassette mold 50 is released from the cassette type injection molding mold apparatus while the cassette mold 50 is held by the cassette mold exchange assisting tool. Cassette mold 5
Numeral 0 is held by the cassette mold exchange assisting tool and becomes detachable, and the arms 3, 4, 5 and the cassette mold support 6 are rotated around the respective axes 7, 8, 9, and 10,
The cassette mold 50 is carried out of the cassette type injection mold apparatus and removed. This operation is similarly performed for the fixed-side cassette mold and the movable-side cassette mold.

During the molding operation, the third arm 5 is removed by removing the third shaft 9 so as not to hinder the molding operation.
While the second arm 4 is rotated about the second shaft 8, one end of the connecting rod 15 is inserted into the first through hole 3a and the communication hole 2a, and the other end is inserted into the second through hole 2a. By inserting the first arm 3 and the second arm 4 into the hole 4a, the first arm 3 and the second arm 4 are fixed at a fixed angle with respect to the angle 2 (the state of FIG. 2).

In the second embodiment of the cassette mold holding means, the exchange work can be performed similarly by holding the cassette mold 50 as described above.

In this embodiment, as described above, the second shaft 8 is also configured to be freely inserted and removed similarly to the third shaft 9. This is intended to improve the workability when the cassette tool changing aid is first attached to the platen 51 of the molding machine by allowing the second shaft 8 to be freely inserted and removed.

[0024]

The present invention is embodied in the form described above and has the following effects.

The cassette mold is movable rotatably held in any horizontal plane at an arbitrary plane position within a movable range of the arm, a cassette mold base plate in the state opened molding outside the mold housing Since the cassette mold can be exchanged with the recessed and assisted state all the time, when replacing the cassette mold, the operator does not have to worry about the weight of the cassette mold and damage the cassette mold. Mimicking
Eliminating burns from cassette molds that are hot due to temperature control.

Further, during the molding operation after the exchange operation of the cassette die, the third arm can be disengaged and the first arm and the second arm can be fixed at a fixed angle with respect to the angle. Therefore, during the molding operation, there is no trouble without removing the cassette die changing device entirely.

By forming the cassette mold holding means with a pair of blocks and a pair of fixing plates, the cassette mold can be easily and reliably held.

Also, the cassette mold holding means can be easily and reliably held by forming the cassette mold holding means from a pair of blocks and a pair of fixed blocks.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a cassette mold changing aid.

FIG. 2 is a perspective view showing a state in which a cassette mold changing auxiliary tool is attached to a movable platen of a molding machine and a third arm is detached.

FIG. 3 is a perspective view for explaining a first embodiment of a cassette mold holding means of the cassette mold exchange assisting tool.

FIG. 4 is a perspective view for explaining a second embodiment of the cassette mold holding means of the cassette mold exchange assisting tool.

[Explanation of symbols]

 Reference Signs List 1 mounting base 2 angle 2a communication hole 3 first arm 3a first through hole 4 second arm 4a second through hole 5 third arm 6 cassette mold support 7 first shaft 8 second Axis 9 Third axis 10 Fourth axis 11 Block 11a Guide surface 11b Guide pin 11c Positioning pin 12 Fixing plate 12c Depression 13 Block 13a Guide surface 13b Groove 14 Fixed block 14 Locking part 15 Connecting rod 51 Platen 50 Cassette die 50a Parting line surface 50b External part

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B29C 45/26 B29C 33/00-33/30 B29D 37/00-37/20

Claims (4)

(57) [Claims] 1. A cassette mold exchange assisting tool of a cassette type injection molding apparatus capable of exchanging a fixed mold and a movable mold with a different cassette mold each time a different molded product is molded. An angle is attached to a mounting base fixed to a platen of the molding machine so that the height can be adjusted in a vertical direction. One end of a first arm is connected to the angle via a first shaft.
And one end of a second arm is connected to the other end of the first arm .
Are rotatably coupled in a horizontal plane through the second axis, the other end of the second arm, one end of the third arm is a
Through the third shaft is rotatably coupled in a horizontal plane, to the other end of the third arm, cassette mold support base is a
4 rotatably provided in a horizontal plane through the axis, the said cassette mold support base, cassette gold, characterized in that the cassette mold holding means for holding the cassette mold is provided Mold exchange aid. 2. The cassette mold changing aid according to claim 1, wherein the third shaft is provided so as to be freely inserted and removed so that the third arm can be detached from the second arm. A first through hole is provided in the first arm within a range overlapping the angle, and the angle is provided with a communication hole communicating with the first through hole; A second through-hole is provided in the second arm so as not to overlap with the first arm. In a state where the third arm is disengaged, one end of a U-shaped connecting rod is connected to the second arm. By inserting the other end into the second through hole while inserting the other end into the first through hole and the communication hole,
A cassette mold changing aid, wherein the first arm and the second arm can be fixed at a fixed angle with respect to the angle. 3. The cassette mold holding means according to claim 1, wherein said cassette mold holding means is provided at both ends of said cassette mold support base, and a side portion thereof is in contact with both ends of a parting line surface of said cassette mold. A guide surface is formed, and a pair of blocks in which a guide pin and a positioning pin are erected on the upper surface portion, and are movable in the vertical direction by the guide pin ,
A concave portion which is rotatably supported in a horizontal plane and which is positioned by the positioning pin when the cassette mold is in contact with the guide surface and which can lock an outer shape of the cassette mold is formed. A cassette mold changing aid comprising a pair of fixing plates. 4. The cassette mold holding means according to claim 1, wherein said cassette mold holding means is provided at both ends of said cassette mold support base, and a side portion thereof comes into contact with both ends of a parting line surface of said cassette mold. A pair of blocks each having a guide surface formed thereon and having a groove at an upper portion thereof, and one end formed with the groove and the other end formed with a locking portion capable of locking the outer shape of the cassette mold. A cassette mold exchange assisting tool, comprising: a fixed block;