JP2857825B2 - Molded product removal device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for removing a molded article from an injection molding apparatus.

[0002]

2. Description of the Related Art A molded product molded by an injection molding device is cut off from a runner at a gate portion, protruded from a movable side mold by a protruding pin, falls naturally, and is collected at a position below the mold. And so on. However, since it is difficult to provide a space below the mold to provide a large collection box or the like, a small molded product collection container or the like is provided. Therefore, the collection container and the like must be frequently replaced during the molding operation, and the management thereof is troublesome.In general, a large number of molded products protruded are individually grasped by a vacuum chuck or the like.
2. Description of the Related Art It has been practiced to store in a molded product collection container or the like provided outside a molding apparatus.

[0003]

As described above, when a molded product protruding from a mold is taken out by a vacuum chuck or the like, when the mold is opened, the vacuum chuck is moved between the movable mold and the fixed mold. , The vacuum chuck is positioned for each of a large number of molded articles, and is adsorbed on the vacuum chuck. Then, the vacuum chuck is retracted and moved out of the injection molding apparatus. In addition, a chuck for taking out a molded product also requires a dedicated chuck adapted to the molded product, and setting of the chuck for each molded product is also required. In order to perform such advanced tasks efficiently, usually expensive robotic devices must be employed, which increases equipment costs for removing molded articles,
This is a cause of increasing the manufacturing cost of molded articles.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a molded article removing apparatus capable of simultaneously removing a large number of molded articles with a simple structure.

[0005]

In order to achieve the above-mentioned object, a molded product take-out apparatus according to the present invention is provided, when an injection molding apparatus is in an open state, between a fixed mold and a movable mold. molded article receiving is is provided with a retractable, this molded product receiving
In order to prevent the molded product from protruding from the movable mold,
Opening and a second part provided on the side of the molded article receiver.
An opening and a lid plate capable of opening and closing the second opening.
There are things .

[0006] This molded product receiver is provided at a runner forming position of a fixed mold, and is used to take out the runner.
It can move integrally with the chuck means provided in the feeding mechanism
And with a simple configuration,
It is possible to take out molded products .

[0007]

In the above configuration, when the mold is open, the molded product receiver is inserted between the fixed mold and the movable mold, and the opening is opposed to and close to the molded product projecting position of the movable mold. When the molded product is protruded, a plurality of molded products are simultaneously accommodated in the molded product receiver from the first opening . Stored molded products
Then, the molded article receiver is rotated for movement, and the second opening
The lid is closed at this point even if
The molded product does not fall from here. Molded product receiver in predetermined position
When the lid is opened after moving to
Falls to a predetermined position and can be collected .

[0008] Further, the molded product take-out device is provided so as to be movable integrally with the runner take-out mechanism already provided.
For example, take out the molded product and runner with a simple configuration.
Is performed in parallel .

[0009]

An embodiment of the present invention will be described below with reference to the drawings. First, prior to the description of the molded product removing apparatus of the present invention, an injection molding apparatus to which the apparatus is applied will be described.

As shown in FIG. 1, a pair of platens 51 and 52 opposed to each other via a support shaft 50 are provided. The movable platen 51 can be advanced and retracted with respect to the fixed platen by a mold clamping mechanism (not shown). is there. This fixed platen 5
2, a molded product take-out device described later is provided.

A mold device is mounted between the platens 51 and 52. Next, this mold apparatus will be described.
In the fixed mold P, a runner stripper plate 2 is opposed to a front surface (left side in FIG. 1) of a fixed attachment plate 1 attached to a fixed platen 52, and a fixed mold plate 3 is opposed to the front surface. Has been installed. The runner stripper plate 2 and the fixed mold plate 3 can move forward and backward via a guide shaft 4 and a support shaft 5.

A sprue bush 6 is fixed at the center of the fixed-side mounting plate 1 via a locating ring 7. The tip 6a of the sprue bush 6 coincides with the front surface when the runner stripper plate 2 comes into contact with the mounting plate 1.

A runner 3a is provided on the back (right side) of the fixed mold plate 3. The center of the runner 3a is a first sprue 6b provided on the sprue bush 6 when the mold is clamped. Can be communicated with.

The runner portion 3a is branched vertically along the back surface of the fixed-side mold plate 3 and further horizontally at the tip of the runner portion 3a, and a second sprue portion 3b is provided at each end thereof. Each of the second sprue portions 3b penetrates the fixed mold plate 3 and is formed in a tapered shape with a thinned tip. Each second
A gate 3c is provided at the tip of the sprue portion 3b. In the vicinity of each gate 3c, there is provided a fixed-side cavity 3d which forms a cavity of a molded product together with a movable-side cavity 12a to be described later.

The head of a runner lock pin 8 fixed to the fixed-side mounting plate 1 abuts against the front side of the flange portion 6c of the sprue bush 6, and its shaft portion contacts the fixed-side mounting plate and the runner stripper plate 2. It is inserted through the provided pin hole. An inverted tapered projection 8a is formed at the tip of the runner lock pin 8. This projection 8a
In a state where the runner stripper plate 2 is in contact with the mounting plate 1, the protrusion protrudes from the front surface thereof. It is possible to occupy a position.

The movable mold Q is mounted on the front surface of the movable mounting plate 9 fixed to the movable platen 51 of the molding apparatus main body (FIG. 1).
On the right side), a spacer block 10, a receiving plate 11, and a movable mold plate 12 are sequentially arranged. As the movable platen 51 advances and retracts by the above-described mold clamping mechanism (not shown), the movable mold Q can advance and retract along the guide shaft 4.

The above-described cavity 12a is provided on the front surface of the movable mold plate 12, and the tip of a core pin 13 provided to penetrate the mold plate protrudes from the center of the cavity 12a. At the bottom of each cavity portion 12a, a protruding pin hole 12b penetrating in the thickness direction of the template is provided.

In the space 10a formed in the center of the spacer block 10, two projecting plates 14, 15 are housed. The projecting pins corresponding to the number of molded products are provided in these two projecting plates. 16 is attached. Each protruding pin 16 is inserted through the pin hole 11a provided in the receiving plate 11 and the above-described pin hole 12b, and can protrude from the front surface of the movable mold plate 12 when the protruding plates 14, 15 are advanced. is there. The protruding plates 14, 15 and the protruding pin 16
When the protruding shaft 17 advances, and the protruding shaft retreats, it can be retracted by a return spring (not shown).

Next, a device for removing a molded product according to the present invention will be described.

The molded product removal device is provided on an existing runner removal mechanism C via a connecting plate 32 so as to be integrally movable.

The runner take-out mechanism C is provided with chuck means 34 capable of chucking the runner R at the runner forming position of the fixed mold P. This chuck means can be advanced and retracted by the cylinder shaft 24a, and can be moved by the air cylinder. 31 can be moved up and down.

The product removal mechanism D includes a cylinder shaft 24a.
Is mounted via a mounting plate 36 to a distal end of a connecting plate 32 that is mounted in a cantilever manner on a mounting plate 27 fixed to the distal end of the connecting plate 32. The molded product receiver 40 constituting the molded product take-out mechanism D includes a first opening 40b that can face the molded product projecting position of the movable mold Q. Molded product receiver 4
Numeral 0 can be moved integrally with the runner take-out mechanism C via the connecting plate 32, and can be moved independently as described later.

As shown in FIG. 2, a molded product take-out mechanism D constituting the present apparatus includes a fixed platen 5 fixed to a main body (not shown) of the injection molding apparatus together with a runner take-out mechanism C.
2 is installed on a base 22 fixed to the center of the upper side. A turntable 23 is attached to the upper end of the base 22, and a runner take-out mechanism C and a molded product take-out mechanism D
Can be integrally advanced and retracted by the cylinder 24 provided on the turntable, and can be rotated in the horizontal direction by the turntable. The operation timing, advance / retreat speed, stroke, and the like of the cylinder 24 and various cylinders described below can be controlled by a cylinder control means 25 provided above the cylinder 24.

An actuator mounting plate 27 is mounted on the front end of a cylinder shaft 24a which is advanced and retracted by the cylinder 24. An actuator 28 is mounted on the upper part of the actuator mounting plate 27. At the center of the actuator mounting plate 27, there is provided a rotation shaft 29 which is driven to rotate by the actuator 28 and rotates the runner take-out mechanism C and the molded product take-out mechanism D.

The rotation shaft 29 is attached to the actuator mounting plate 2.
7, and a cylinder mounting portion 30 is fixed to the protruding portion. A shaft 31a of an air cylinder 31 for vertically moving the connecting plate 32 is provided vertically in the cylinder mounting portion 30. A connecting plate 3 fixed to an actuator mounting plate 27 is provided at a lower end of the air cylinder 31.
The upper surface of 2 is fixed. The connection plate 32 can be moved up and down by the air cylinder 31 and can swing right and left around the rotation shaft 29 by the actuator 28.

On the lower side of the connecting plate 32, a chuck arm 3 is provided.
3 is suspended, and the aforementioned chuck means 34 is attached to the tip thereof.
Is provided. The jaws of the chuck means 34 are opened and closed by a chuck opening / closing cylinder 35 provided in parallel with the cylinder above the connecting plate 32, whereby the runner protruding between the dies can be taken out.

The above-mentioned molded product take-out mechanism D is provided at the end of the connecting plate 32. The molded product removal mechanism D has a configuration similar to that of the runner removal mechanism C. That is, the actuator mounting plate 36 is attached to the distal end of the connecting plate 32.
Are fixed, and an actuator 37 is fixed above the actuator mounting plate. A rotation shaft 38 driven by an actuator 37 is provided at the center of the actuator mounting plate 36.
A cylinder mounting portion 39 is mounted. The cylinder mounting portion 39 is provided with an air cylinder 41 for raising and lowering the molded article receiver 40. Shaft 41a of air cylinder 41
The upper end of the mounting part 40a for receiving the molded product is fixed to the lower end of the mounting part 42 via the mounting member 42. Molded article receiver 40
Can swing left and right around a rotation shaft 38 through a mounting portion 39 within a predetermined angle range.

On the front surface of the molded product receiver 40, the movable mold plate 1 is provided.
First opening 40b capable of facing the second molded article projecting position
Is provided. A second opening 40c is provided on one side (right side), and a lid plate 43 is provided in the second opening so that the opening can be opened and closed by lifting and lowering. (See FIG. 3). The cover plate 43 is attached to the mounting member 42.
The second opening 40c is opened and closed by the operation of the lid cylinder 44 provided in parallel with the air cylinder 41 provided above the air cylinder 41.

On the front surface of the actuator mounting plate 36,
A stopper 45 for restricting the vertical movement of the molded product received 40 Ru Oh provided. A limit switch (not shown) is attached to a position at which the stopper can approach the molded product receiver.
Excessive vertical movement of the molded article receiver can be prevented.

Next, the operation will be described.

The runner take-out mechanism C and the molded product take-out mechanism D are raised by the air cylinders 31 and 41, and the movable mold Q is advanced to perform mold clamping as in a normal injection molding machine, and the molding resin is placed in the cavity. Supply. When the resin filled in the cavity is solidified, the movable mold Q is retracted and the mold opening operation is started.

When the movable mold Q is retracted, the fixed mold plate 3 and the movable mold plate 12 are separated from each other, and the molded product S solidified in the cavity and the runner R solidified in the fixed mold P.
Is cut at the gate.

Further, when the movable mold Q is retracted, the fixed mold plate 3 is fixed to the two mold plates 3 and 1 by a limit bolt (not shown).
2 is latched until a predetermined interval is reached. At this time, the runner R is left on the front surface of the runner stripper plate 2 by the runner lock pin 8.

At this time, the connecting plate 32 is inserted between the molds by the air cylinder 31 (downward).
Then, with the claw of the chuck means 34 opened, the runner R is moved to a position where the protrusion is grasped. At this time, the molded product receiver 40 is also lowered, and the first opening portion 40b faces the molded product projecting position of the movable mold plate 12.

Next, the runner R is grasped by the operation of the chuck opening / closing cylinder 35, and the runner take-out mechanism C and the molded product take-out mechanism D are moved forward (left side in FIG. 1) by the cylinder 24 in the state as it is. At the same time, the runner stripper plate 2 is advanced by a return spring (not shown), so that the runner R escapes from the sprue portion 6b and is held by the chuck means 34 between the runner stripper plate 2 and the movable mold plate 3. State.

At this time, the molded article receiver 40 also moves forward via the connecting plate 32, and the first opening 40b contacts the front surface (the right side in FIG. 1) of the movable mold plate 12. Here, the protruding plates 14, 15 and the protruding pin 16 are advanced by the protruding shaft 17, and the molded product S remaining in the movable side cavity portion 12a is protruded. The protruded molded product S is stored inside from the first opening 40b of the molded product receiver 40 by natural fall. After the molded product S is stored in the molded product receiver 40, the runner take-out mechanism C and the molded product take-out mechanism D are raised to predetermined positions by the air cylinders 31 and 41. Then, the runner take-out mechanism C and the molded product take-out mechanism D are moved backward by the cylinder 24 again.

When the connecting plate 32 is rotated 90 ° clockwise by the actuator 28, the runner take-out mechanism C
In addition, the molded product take-out mechanism D rotates integrally with the connecting plate, and is located on the upper side of the mold and is in a horizontal state. Here, when the jaws of the chuck means 34 are opened by the chuck opening / closing cylinder 35 and the runner R is dropped, the runner is collected in a runner collection container (not shown) provided below the side of the molding machine main body. . When the lid plate 43 is raised by the operation of the lid cylinder 44 to open the second opening 40c in parallel with the fall of the runner R due to the opening of the chuck means, the molded product S stored in the molded product receiver 40 is opened.
Falls naturally. The molded product S is housed in a molded product collection container (not shown) provided below and alongside the runner collection container. After collecting the runner R and the molded product S, the cover plate 43 is closed, the connecting plate 32 is rotated 90 ° in the counterclockwise direction by the rotating shaft 29, and after being brought to the vertical state, it is further retracted and returned to the start position. Wait for the next operation.

It is also possible to swing only the molded product take-out mechanism D by the operation of the actuator 37 alone. When replacing or repairing the chuck means 34 or the molded article receiver 40, the runner take-out mechanism C and the entire molded article take-out mechanism D are rotated in the horizontal direction by the turntable 23, and the work is hindered by the mold. It can be moved to a different position.

In this embodiment, a cover plate is provided in the second opening provided on the side of the molded product receiver, and this can be opened and closed by an air cylinder. Opening and closing may be performed by swinging. Also, in this case, the lower end of the lid plate is formed in an L-shaped cross section so as to also serve as the bottom of the molded product receiver, and when the lid plate is opened, the entire bottom portion is moved to form the molding stored in the molded product receiver. The article may be made to fall easily.

[0040]

According to the present invention, the injection molding apparatus opens the mold.
In the state, the first opening is provided between the fixed mold and the movable mold.
Since the molded article receiver with the mouth is provided to be able to move forward and backward,
It becomes possible to eject a large number of the molded article at the same time.

It is stored in the molded article receiver through the first opening.
The molded article is rotated when the molded article
Even when the opening faces downward, the molded product does not drop because the cover plate is closed, and can be accurately collected at a predetermined position.

If the molded article receiver is provided so as to be movable integrally with the runner take-out mechanism, a large number of molded articles can be taken out in parallel with taking out the runner with a simple structure. Contribute to cost savings.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a main part of an embodiment of the present invention.

FIG. 2 is a perspective view showing a main part of a runner take-out mechanism and a molded product take-out mechanism.

FIG. 3 is an enlarged perspective view of a molded article receiver.

[Explanation of symbols]

 P Fixed-side mold Q Movable-side mold C Runner take-out mechanism R Runner S Molded product 34 Chuck means 40 Molded product receiver 40b First opening 40c Second opening 43 Cover plate

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B29C 45/40-45/44 B29C 33/44

Claims (2)

(57) [Claims] 1. A molded product receiver is provided between a fixed mold and a movable mold so as to be able to advance and retreat when the injection molding apparatus is in a mold open state.
Only Yes and a first opening to receive the molded articles which can be opposed to the molded article ejection position of the movable mold, the molded article receiving
A second opening provided on the side of the
A molded product take-out device, comprising: a lid plate capable of opening and closing a mouth . 2. The apparatus according to claim 1, further comprising a runner take-out mechanism provided with a chuck means capable of chucking the runner at a runner forming position of the fixed mold, wherein the molded article receiver and the chuck means are integrated. A molded product take-out device characterized in that it is movable.