JPH07326B2 - Molded product take-out device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is provided so as to be connected to a resin molding machine, operated at the end of a molding process, and held by a movable mold of the resin molding machine. The present invention relates to a molded product takeout device for taking out a molded product.

[Conventional technology and its problems]

A typical example of an injection molding machine for producing a resin molded product is shown in FIG. In this figure, 10 is a resin molding machine main body, 11 is an injection unit, 12 is a mold clamping unit, the injection unit 11 has a hopper 13, a kneading screw 14 and an injection nozzle 15, and the mold clamping unit 12, It has a fixed die 17 provided on the fixed platen 16 and a movable die 19 provided on a movable platen 18 which is provided so as to be movable in a direction in which it separates from and comes in contact with the fixed platen 16. Reference numeral 20 is a tie bar for guiding the movable platen 18, and 21 is an oil cylinder for moving the movable platen 18.

In such an injection molding machine, the movable mold 19 is attached to the fixed mold 17.
In the state where they are in close contact with each other, the molten resin is injected from the injection nozzle 15 into the molding space defined by the two molds, and is cooled and solidified to produce a molded product.

After that, with the movable mold 19 being opened and separated from the fixed mold 17, the molded product that is normally attached and held on the movable mold 19 is taken out by the molded product take-out device.

Therefore, the conventional molded product unloading device is basically configured independently of the resin molding machine, and therefore the product unloading head of the molded product unloading device is
It is controlled so that the operation is first confirmed after detecting that the movable mold 19 has been completely opened and confirming that the head can be safely entered.

However, in such a molded product take-out device, since the molded product take-out head starts to operate after entering the mold after the movable mold 19 is completely opened, an accident such as the head colliding with the mold is caused. Can be sufficiently prevented, but after the molding process is completed, a considerably long time is required until the molded product take-out head reaches a predetermined position between the molds, resulting in a problem of low production efficiency. is there.

[Object of the Invention]

The present invention has been made to solve the above problems, and is driven by the moving force of a movable mold of a resin molding machine, and a molded product take-out head for the molded product is obtained within a short time after the completion of the molding process. It is an object of the present invention to provide a molded product take-out device that is operated and is reliable in its operation.

[Means for solving problems]

The molded product unloading device of the present invention is a molded product unloading device connected to a resin molding machine, which opens a movable mold that moves so that the movable mold of the resin molding machine separates from the fixed mold after the molding process is completed. The movable frame that is moved in the same direction by the movement, the raising member that is provided on the movable frame and that is driven upward by the moving force of the movable frame, and the raising member that is attached to the raising member and that is raised by the raising member. The movable mold has a moving speed of the movable frame, which has a molded product take-out head that enters between a fixed mold and a movable mold separated from the fixed mold, and is driven after the lifting of the lifting member is completed. It is characterized in that a catching-up mechanism for increasing the moving speed of is provided.

According to such a molded product take-out device, since the moving force of the movable mold of the resin molding machine is used as the driving force, it closely cooperates with the resin molding machine, so that the molded product take-out head moves with the opening movement of the movable mold. As a result, the molded product can be taken out in a short time, and high production efficiency can be obtained.

A catching mechanism that drives the moving speed of the movable frame faster than the moving speed of the movable mold, which is driven after the lifting of the lifting member is completed, is used. After facing the movable mold with an appropriate distance from the mold, the catching mechanism moves the molded product take-out head at a high speed in the opening movement direction of the movable mold to move the head. It can be placed in close contact with the mold or in a state very close to it, and as a result, the take-out force of the take-out head of the molded product can be fully exerted without damaging the molded product held in the movable mold. As a result, a highly reliable molded product takeout device can be obtained.

[Specific Examples of the Invention]

1 to 4 show the outline of one embodiment of the molded product take-out apparatus of the present invention. FIG. 1 is an explanatory front view, FIG. 2 is an explanatory plan view, and FIG. 3 is an explanatory right side view. , FIG. 4 is a rear view for the purpose of illustration, and a part thereof is omitted in order to avoid complication.

In these figures, 30 and 31 are horizontal substrates. The substrates 30 and 31 each extend in the opening movement direction of the movable mold 19 (the direction away from the fixed mold, hereinafter also referred to as the “X direction”) and are separated from each other in the direction perpendicular to the X direction. It is fixed to the resin molding machine.

Reference numeral 32 denotes a guide rod extending in the X direction provided on the substrate 30, 33 denotes a rail extending in the X direction provided on the substrate 31, by which a slider 34 movable on the guide rod 32,
Movable frame 36 having wheels 35 rolling on rails 33 at both ends
Is supported so as to be movable in the X direction, and a box 38 having a Geneva mechanism, which will be described later, is suspended and supported by the movable frame 36 via a mounting plate 37. Further, a rack 41 is provided on the lower surface of the substrate 30 so as to extend in the X direction, with a meshing portion thereof facing downward with a support member 42 interposed therebetween.

80 is a catching mechanism, and this catching mechanism 80 is a rising member.
It is driven after completion of the raising of 60, and makes the moving speed of the movable frame 36 faster than the moving speed of the movable mold 19. The catch-up mechanism 80 of this example includes a fixed plate 81 fixed to the movable mold 19,
A push lever 82 pivotally supported on the center of the fixed plate 81, and a connecting portion 83 provided at one end of the push lever 82 for pivotally and slidably connecting to the movable frame 36, Before the opening movement end position of the movable mold 19 fixed to the resin molding machine, the stopper portion 84 that collides with the other end of the push lever 82 and stops the movement of the other end in the opening movement direction.
And have.

In this example, the connecting portion 83 of the push lever 82 has a notch 85
And a rotor 86 having an outer diameter adapted to the notch 85 is pivotally supported by the movable frame 36, and the rotor is provided in the notch 85.
The two are connected by the 86 being fitted so as to be rotatable and slidable. 87 is a collision piece, and this collision piece 87 is fixed to the other end side of the push lever 82 and collides with the stopper portion 84 before the opening movement ending position of the movable mold 19.
Reference numeral 88 denotes a bending plate. The bending plate 88 is provided on one end side of the fixed plate 81. When the movable mold 19 moves the fixed plate 81, the push lever 82 has its shaft portion 89 and the bending plate. The moving force is transmitted by both of them and 88, whereby the push lever 82 is moved in a fixed posture without swinging, and the moving force of the push lever 82 is transmitted to the movable frame 36 via the connecting portion 83. As a result, the movable frame 36 moves following the push lever 82. The stopper portion 84 includes a holder 90 fixed to the substrate 31 and a collision screw 91 screwed into the holder 90, and the collision piece 87 of the push lever 82 collides with the tip of the collision screw 91. It is located in the position. Reference numeral 93 is a screw hole provided in the substrate 31, 94 is a fixing screw for fixing the holder, and the screw hole 93 is an X-hole.
A large number of collision pieces are arranged along the direction, and by selecting the screwing holes 93 into which the fixing screws 94 are actually screwed,
The collision timing of 87 can be set appropriately, and as a result, the timing at which the moving speed of the movable frame 36 is increased can be adjusted. Further, by adjusting the protruding length of the collision screw 91, the collision timing of the collision piece 87 can be finely adjusted.

As shown in FIG. 5, the box 38 supported by the movable frame 36 has a first rotating shaft 45 and a second rotating shaft 46 rotatably supported by a front wall 38A and a rear wall 38B. The first rotating shaft 45 projects forward from the front wall 38A, and a pinion 47 is fixed to the outer end of the first rotating shaft 45 by meshing with the rack 41. In the box 38, a driver 50 of the Geneva mechanism is provided on the first rotating shaft 45, and a wheel 51 of the Geneva mechanism is provided on the second rotating shaft 46. The fan gear 53 is provided at the outer end protruding from the rear wall 38B.
Is fixed.

FIG. 6 is an explanatory view of the Geneva mechanism, which shows the first rotating shaft 45.
The doira bar 50 fixed to the disk 50A is composed of a disk 50A, a protruding pin 50B provided on the outer peripheral edge thereof, and an arc-shaped protrusion 50C,
In addition, the wheel 51 has a plurality of radially projecting tongue-shaped arms 51A (4 in the example in the drawing) each having slits 51B extending radially, and an arc edge 51C is formed on the outer circumference between the adjacent arms 51A. The width of the slit 51B of the wheel 51 is set to match the outer diameter of the protruding pin 50B of the driver 50, and the outer peripheral surface of the ridge of the driver 50 matches the circular arc edge 51C of the wheel 51. It is considered to be the curvature.

A rack 62 extending vertically is meshed with the fan gear 53, and the rack 62 is fixed to the rising member 60. The raising member 60 is slidably held by a pair of vertically extending guide rods 61A and 61B fixedly arranged on the casing 38. A molded product takeout head 70 is fixed to the rising member 60. When the fan gear 53 is rotationally moved by the drive of the second rotating shaft 46 in the Geneva mechanism, the rack 62 is raised or lowered, and the raising member 60 and the molded product take-out head 70 are raised or lowered following the rack 62.

The molded product take-out head 70 has, for example, a take-out opening 71 for sucking and taking out a molded product, and a suction pipe 72 connected to the opening 71, and moves the movable die 19 in the X direction. After moving, the molded product held in the movable mold 19 is opened.
It is sucked by 71 and then passed through the suction pipe 72 to be collected.

According to the apparatus of the above embodiment, the molded product can be taken out as follows. 8 (a) to (e)
It is explanatory drawing which shows the taking-out process of a molded product in order.

As shown in FIG. 8 (a), in a resin molding machine, a fixed mold 17 and a movable mold 19 are in close contact with each other, a molten resin is injected into a molding space formed by both molds, and then the resin is cooled and solidified. After manufacturing a molded product by moving the movable mold 19 in the X direction as shown in FIG. 8B, the movable mold 19 is moved.
The push lever 82 receives a moving force in the X direction by the shaft portion 89 and the bending plate 88 of the fixing plate 81 via the fixing plate 81 fixed to the notch 85. And is transmitted to the movable frame 36 via the rotor 86, whereby the movable frame 36 starts to move following the opening movement of the movable mold 19 in the X direction, so that the entire molded product take-out apparatus 100 is moved to the X direction.
Start moving in the direction. On the other hand, when the movable frame 36 starts to move in the X direction, the shaft portion of the pinion 47 moves in the X direction following the movable frame 36, and thus the pinion 47 is rotated by the rack 41 meshing with the pinion 47. The first rotary shaft 45) is rotated.

When the first rotary shaft 45 starts rotating in this way, the driver 50 starts rotating in the Geneva mechanism.
The wheel 51 remains stopped until the protruding pin 50B engages with the slit 51B of the wheel 51. When the protrusion pin 50B engages with the slit 51B, the rotation shaft (second rotation shaft 46) of the wheel 51 starts rotating in a manner peculiar to the Geneva mechanism. When the second rotating shaft 46 starts rotating, the fan gear 53 connected to the second rotating shaft 46 starts rotating, as shown in FIG. The meshed rack 62 rises, and following this, the raising member 60 moves upward while sliding the guide rods 61A and 61B.

Then, in the Geneva mechanism, the protruding pin of the driver 50
When 50B separates from the slit 51B of the wheel 51, the rotation of the wheel 51 is stopped, which stops the rotation of the second rotating shaft 46. As a result, as shown in FIG.
Although the ascending member 60 stops ascending, it continues to move in the X direction, and the molded product take-out opening 71 of the molded product take-out head 70 fixed to the ascending member 60 is held in the movable mold 19. And are set at positions facing each other.

After the lifting member 60 has been lifted, the collision piece 87 on the other end side of the push lever 82 collides with the collision screw 91 of the stopper portion 84 before the opening movement end position of the movable mold 19, and the other end side concerned. Is prohibited, and the shaft portion 89 of the push lever 82 is still moved in the X direction by the moving force of the movable mold 19 in the X direction. A moment acts to move one end side of the push lever 82 in the X direction around the collision portion between the collision piece 87 and the collision screw 91, and as a result, the one end side of the push lever 82 is attached to the shaft portion 89 of the push lever 82. Is moved in the X direction at a speed higher than that of the movable mold 19. Therefore, the movable frame 36, which moves following the one end of the push lever 82, moves at a speed higher than that of the movable mold 19, and as a result, as shown in FIG. The head 70 catches up with the movable mold 19, whereby the molded product take-out head 70 is positioned in a close contact state or a very close state.

Then, the molded product is sucked and taken out by the taking-out opening 70 by receiving the suction force, and is collected at a predetermined collecting place through the suction pipe 72.

When the removal of the molded product is completed in this way, the movable mold 19 is moved in the direction opposite to the X direction, and the movable frame 36 is moved in the same direction by receiving this moving force. Therefore, the movement of the movable frame 36 in the opposite direction causes the first rotation shaft 45 and the second rotation shaft 46 to rotate in the opposite direction to the above in the Geneva mechanism, and as a result, the fan gear 53 causes the lifting member to rotate. 60 is moved in the descending direction, so that the molded product take-out apparatus 100 returns to the initial state and position. Then, in this state, the next molded product is manufactured and taken out again through the same process as described above.

According to the molded product take-out apparatus of the above embodiment, the following operational effects can be obtained.

(1) The movable frame 36 is moved following the movable mold 19 in a state of being completely connected to the movement of the movable mold 19 of the resin molding machine, and the molded product take-out head 70 is fixed. Since the lifting member 60 is lifted or lowered by the moving force of the movable frame 36, the molded product take-out head 70 is lifted by the lifting member 70 while the movable mold 19 is moving in the opening movement direction.
It can be moved to a position facing the movable mold 19 by means of 60. Therefore, after the opening movement of the movable mold 19 is completed, it is possible to take out the molded product immediately without waiting time, and as a result, it is possible to quickly start the manufacturing process of the next molded product. The productivity of can be significantly improved.

(2) Since the movable frame 36 is moved by utilizing the moving force of the movable mold 19 of the resin molding machine, and the raising member 60 is raised or lowered by using the moving force of the movable frame 36, A dedicated moving drive source is not required in the molded product take-out apparatus, and as a result, the structure is simple and the apparatus can be easily downsized.

(3) Driven after the lifting member 60 has been lifted. Movable frame 36
Since the catching-up mechanism 80 is provided to make the moving speed of the movable mold 19 faster than the moving speed of the movable mold 19, the rising member 60 raises the molded product take-out head 70 to separate it from the movable mold 19 by an appropriate distance. After facing the movable mold 19 with the, the catching mechanism 80 moves the molded product take-out head 70 to the movable mold.
By moving the head 70 at a high speed in the moving direction of 19, it is possible to arrange the head 70 in a state of being in close contact with or extremely close to the movable mold 19, and as a result, the movable mold 19
It is possible to obtain a molded product unloading device with high reliability, since the molded product unloading head 70 can fully exert the unloading force without damaging the molded product held by the above.

(4) The first rotary shaft 45 that is rotated in response to the movement of the movable frame 36 is provided, and the second rotary shaft 46 that is rotated in response to the vertical movement of the lifting member 60 is provided. Since the rotary shaft 45 and the second rotary shaft 46 are connected by the Geneva mechanism so that the rotational force is transmitted to each other, the speed change of the rising member 60 during the ascent and descent follows a sine curve. As a result, the ascending movement and the descending movement of the raising member 60 can be performed in a state where there is almost no mechanical impact force, and the durability and reliability of the device can be improved.

Although one embodiment of the present invention has been described above, in the present invention, the specific configuration of each part is not limited to the above embodiment. For example, instead of the Geneva mechanism, an appropriate link mechanism or the like may be used to transmit the moving force of the movable frame to the raising member.

[Brief description of drawings]

1 to 4 are respectively a front view for explanation, a plan view for explanation, a right side view for explanation, a rear view for explanation, showing an embodiment of a molded product unloading apparatus of the present invention, and FIG. 6 is an explanatory sectional view showing the inside and the outside of the machine, FIG. 6 is an explanatory view showing an outline of the Geneva mechanism, FIG. 7 is an explanatory view showing an outline of an example of a resin molding machine, and FIGS. 8 (a) to 8 (e). [Fig. 4] is an explanatory view showing a process of taking out a molded product in order. 10 …… Resin molding machine main body, 11 …… Injection unit 13 …… Hopper, 14 …… Mixing screw 15 …… Injection nozzle, 16 …… Fixed platen 17 …… Fixed mold, 18 …… Movable platen 19 …… Movable Mold, 20 …… tie bar 21 …… oil cylinder, 30,31 …… substrate 32 …… guide rod, 33 …… rail 34 …… slider, 35 …… wheel 36 …… movable frame, 37 …… mounting plate 38 …… Box, 41 …… Rack 42 …… Supporting member, 38A …… Front wall 38B …… Rear wall, 45 …… First rotary shaft 46 …… Second rotary shaft 47 …… Pinion 50 …… Driver, 50A ...... Disc 50B ...... Projection pin, 50C ...... Projection 51 ...... Wheel, 51A ...... Arm 51B ...... Slit, 51C ...... Arc edge 53 ...... Fan gear, 60 ...... Lifting member 61A, 61B …… Guide rod 62 …… Rack 70 …… Molded product take-out head 71 …… Extraction opening, 72 …… Suction pipe 80 …… Catch-up mechanism, 81 …… Fixed Plate 82 …… Push lever, 83 …… Coupling section 84 …… Stopper section, 85 …… Notch 86 …… Rotor, 87 …… Collising piece 88 …… Bending plate, 89 …… Shaft section 90 …… Holder, 91 …… Collision screw 93 …… Screw hole, 94 …… Fixing screw 100 …… Molded product take-out device

Claims (2)

[Claims] 1. A molded product take-out device connected to a resin molding machine, wherein the movable mold of the resin molding machine moves so as to move away from the fixed mold after the molding process is completed, in the same direction. A movable frame, a rising member provided on the movable frame, which is driven upward by a moving force of the movable frame, and a fixed die attached to the rising member and raised by the rising member. A movable product separated from the movable mold, and a molded product take-out head that is inserted between the movable mold and the movable mold. A molded product take-out device, which is equipped with a catch-up mechanism that makes it even larger. 2. The catch-up mechanism comprises a fixed plate fixed to a movable mold, and a push lever pivotally supported at the center of the fixed plate.
A connecting portion provided at one end of the push lever for pivotally and slidably connecting to the movable frame, and the push lever in front of the opening movement end position of the movable mold fixed to the resin molding machine. The molded product take-out device according to claim 1, further comprising a stopper portion that collides with the other end of the molded article and stops the movement of the other end in the opening movement direction.