JP3514885B2 - Automatic removal of molded products - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic molded product take-out apparatus for automatically taking out a molded product from a molding machine by rotating a chuck member between a take-out position and a release position.

[0002]

2. Description of the Related Art A conventional automatic molded product take-out apparatus for automatically taking out a molded product by rotating a chuck member between a take-out position and a release position is, for example, Japanese Utility Model Publication No. 4-45861.
As shown in the publication, the center of a pulley having a non-circular required shape and substantially one end of a rod-shaped reversing arm are inserted into the rotation shaft of an actuator that can be reversed right and left, and the pulley is not affected by the rotation shaft. , Which is fixed to the machine body so as to maintain a fixed orientation, but the reversing arm is fixed to the rotating shaft, and the reversing arm has a shaft rod that is inserted and rotated at the other end, A circular pulley is provided on the side of the protruding shaft rod that corresponds to the pulley, and a gripper that has an openable claw and can swing back and forth is provided at the other end.A belt is wound between the pulley and the circular pulley. The structure is known.

In this automatic molded product take-out device, when the reversing arm is rotated in accordance with the driving of the actuator, the circular pulley is rotated by the belt fixed to the non-circular pulley in the direction opposite to the rotating direction of the reversing arm. After that, the gripper descends to the front of the mold of the molding machine to grip the molded product, and then the gripper gets over the tie bar from the front of the mold as the reversing arm rotates in the opposite direction to the above, releasing the front of the molding machine. It is moved to the position and taken out. At this time,
The turning locus of the reversing arm is arcuate, whereas the turning locus of the gripper is non-arcuate (elliptical).

[0004]

However, since the above-mentioned conventional automatic molded product take-out apparatus has a structure in which the gripper is rotated by the rotation of the reversing arm, the gripper is moved downward and positioned in front of the mold. Even if the non-circularity of the pulley is increased, a sufficient amount of vertical movement cannot be secured.

Further, in order to secure a sufficient vertical movement amount in the vertical direction, it is necessary to increase the non-circularity of the pulley. However, when a pulley with a large non-circularity is used, the gripper is not It will move at a constant speed and discontinuously. For this reason, the gripper suddenly moves and the holding state of the molded product becomes unstable, and in the worst case, the molded product may come off during the removal and fall, resulting in defective removal.

The present invention has been invented in order to solve the above-mentioned conventional drawbacks, and an object thereof is to provide a mounting space by separating the rotating mechanism of the chuck member and the vertical mechanism thereof. An object of the present invention is to provide an automatic take-out device for molded products, which can be mounted on a molding machine with a small number of products.

Another object of the present invention is to move the chuck member between the take-out position and the release position while gradually inclining the chuck member at a constant speed so as to prevent a defective holding state from occurring during the take-out process. An object of the present invention is to provide an automatic molded product take-out device that can perform the operation reliably.

Still another object of the present invention is to provide a molded product automatic take-out device capable of reliably overcoming the tie bar in a molding machine and taking out a molded product while reducing the height of the device itself to achieve miniaturization. To provide.

Still another object of the present invention is to shorten the take-out cycle by setting the turning amount of the turning arm member to be small and turning the chuck member largely so that the chuck member is located at a release position apart from the molding machine. An object is to provide a molded product automatic take-out device capable of performing the above.

[0010]

For this reason, the present invention is provided in a main body frame fixed above the mold of a molding machine.
A drive member for rotating the rotating shaft, a base end portion fixed to the rotating shaft, a free end portion rotatably supporting the rotating shaft, a rotating arm member at a predetermined angle, and a rotating shaft. A fixed circular body that is fixed concentrically, and is attached so that it does not rotate around the rotating shaft,
A rotating body having a diameter smaller than that of the fixed circular body, a belt member stretched over the fixed circular body and the rotating body, and a front-rear movable member supported by a support member attached to the rotating shaft so as to be movable in the front-rear direction. A front-rear drive member that moves the front-rear movable member in the front-rear direction, a vertical drive member attached to the front-rear movable member, and a chuck member attached to a lower end portion of the vertical drive member. The chuck member and the vertical drive member are oriented in the vertical direction when rotated to the take-out position. Then, when the rotating arm member is rotated by the drive member to move the chuck member from the take-out position to the release position, the rotating member is fixed to the fixed circular member by the belt member fixedly attached to the fixed circular member. It rotates at a rotation angle larger than the rotation arm member according to the difference in outer diameter, and gradually moves the vertical drive member and the chuck member to the release position.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an overall perspective view of an automatic molded product take-out apparatus.

FIG. 2 is a front view of the automatic molded product take-out apparatus.

FIG. 3 is an exploded perspective view showing the rotating mechanism of the chuck member.

A drive member (not shown) for rotating the rotary shaft 5 is attached to the main body frame 3 of the automatic molded product take-out apparatus 1 which is mounted above the mold portion of the molding machine (not shown). The drive member may be either a rotary actuator that rotates the rotary shaft 5 by air pressure or an electric motor.

A base end portion of a rotary arm member 9 is fixed to the rotary shaft 5, and the rotary arm member 9 is mounted on the lower left and right sides of the main body frame 3 about the rotary shaft 5. The rotation angle is set to about 180 degrees by the contact with the regulation members 11 and 13.

As the rotation restricting members 11 and 13, an elastic member such as rubber is attached to the contact side with the rotating arm member 9, and a stopper screw whose position is adjustable or an elastic member such as rubber which contacts the rotating arm member 9. The member may be an absorber to which a rod is attached and which gradually releases the air in the cylinder as the piston moves to regulate the position while absorbing the shock.

A rotating shaft 5 to which a rotating arm member 9 is attached.
A circular fixed circular body 15 is rotatably supported on the output side of, and the fixed circular body 15 contacts a stopper 17 fixed to the main body frame 3 via a belt member 23 described later. Therefore, the rotation shaft 5 cannot be rotated. A toothed pulley or sprocket is suitable as the fixed circular body 15.

At the free end of the rotating arm member 9, the rotary shaft 1 is provided.
9 is rotatably supported while being prevented from coming off, and a rotating body 21 is attached to the shaft end of the rotating shaft 19 so as not to rotate. The rotating body 21 is set to have a smaller diameter than the fixed circular body 15. When the rotating body 21 is a toothed pulley or sprocket like the fixed circular body 15, the number of teeth of the fixed circular body 15 is larger than that of the fixed circular body 15. Is reduced.

A belt member 23 is stretched between the fixed circular body 15 and the rotating body 21. The belt member 23
If the fixed circular body 15 and the rotating body 21 are toothed pulleys, they may be timing belts, and if they are sprockets, they may be chains. The rotating arm member 9 located at the intermediate portion between the fixed circular body 15 and the rotating body 21 is attached so that the circumferential surface of the tension roll 25 is pressed against the belt member 23 to rotate. 25 keeps the belt member 23 in a tensioned state.

The rotary shaft 19 protruding forward from the rotary body 21
A support member 27 is fixed to the shaft end of the support member 27.
A front and rear movable member 31 is supported by a pair of guide rods 29 fixed in parallel with each other so as to be movable in the axial direction. The front-rear drive member 33 fixed to the support member 27 is fixed to the front-rear movable member 31, and the front-rear drive member 33 is operated to reciprocate the front-rear movable member 31 in the front-rear direction.
Although a cylinder is shown as the front-rear driving member 33 in the drawing, a feed screw and a nut member connected to an electric motor may be used.

The front-rear movable member 31 includes a vertical drive member 35.
However, at the take-out position, the axis is fixed so as to face the vertical direction, and a chuck member 37 is attached to the vertical drive member 35. Although the vertical drive member 35 shown in the drawing is a cylinder, it may be a feed screw and a nut member connected to an electric motor. Also, the chuck member 37 shown in the figure
Is a type that holds the molded product by opening and closing the free ends of the pair of chuck claws 37a, 37a.
Alternatively, a chuck plate attached to No. 5 may be attached with a vacuum suction member or a holding member such as a cylinder (neither is shown). The reference numeral 39 designates the vertical drive member 3.
5 is a guide rod having an axis parallel to 5, and the guide rod 39 is supported slidably in the axial direction with respect to the front-rear movable member 31, and the lower end portion thereof is the chuck member 37.
It is fixed to.

Next, the operation of taking out the molded product will be described.

FIG. 4 is a front view showing a rotating state of the chuck member.

First, the basic operation of taking out the molded product will be described. The chuck member 37 is on standby above the mold (not shown) of the molding machine. At this time, the vertical drive member 35 is set such that its axis is oriented in the vertical direction.

When the vertical drive member 35 is operated in response to the mold opening completion signal output from the molding machine in the above state,
The chuck member 37 moves to the front surface of the lower mold, approaches the molded product held in the mold by the front-rear driving member 33 operated in this state, and chucks the molded product.
Next, when the front-rear driving member 33 is returned, the chuck member 37 moves forward to take out the molded product from the mold,
In this state, it is moved upward by the vertical drive member 35 that is moved back.

Next, when the rotary shaft 5 is rotated in the counterclockwise direction shown in the drawing by the drive of the drive member, the chuck member 3 holding the molded product by the rotary arm member 9 which rotates in the same direction.
After moving 7 from the take-out position above the mold of the molding machine over the tie bar (not shown) of the molding machine to the release position side on the front of the molding machine, for example, the vertical drive member 35 at the release position.
Is operated to position the chuck member 37 above the carry-out conveyor (not shown) located at the release position, the holding by the chuck member 37 is released, and the molded product is taken out onto the carry-out conveyor to complete the take-out operation. To do.

Next, the operation of moving the chuck member between the standby position and the release position will be described in detail.

For example, the operation for moving the chuck member 37 from the standby position to the release position will be described below.
When the chuck member 37 holding the molded product is moved to the take-out position above the mold, the chuck member 37 and the vertical drive member 35 are oriented in the vertical direction. When the rotary arm member 9 is rotated in the counterclockwise direction shown in the figure by the drive member driven in this state, the fixed circular body 15 and the rotary body 21 which are fixed concentrically with the rotary shaft 5 are formed. The belt member 23 stretched causes the rotary shaft 19 to move with respect to the rotary angle of the rotary shaft 5, and thus the rotary arm member 9, and the fixed circular body 15 and the rotary body 2.
1. The vertical driving member 3 rotates in the clockwise direction shown in the drawing at a large rotation angle with a difference in the outer diameter or the number of teeth with respect to 1.
5 and the chuck member 37 are gradually tilted over the tie bar and safety door (not shown) of the molding machine and moved to the release position.

At this time, the turning locus of the tip end portion of the turning arm member 9 shown by the one-dot chain line in FIG. 4 is arcuate, whereas the turning locus of the chuck member 37 is elliptical as shown by the two-dot chain line. Therefore, the moving distance can be reduced and the take-out cycle can be shortened. Further, since the vertical drive member 35 is tilted with respect to the vertical direction when the rotary arm member 9 is rotated, the overall height of the automatic molded product take-out apparatus 1 can be reduced. When the chuck member 37 is moved to the release position, the molded product held by the chuck member 37 is rotated by the rotating arm member 9.
Since it is located outside the free end of the molding machine, it can be sufficiently separated from the front of the molding machine, and a sufficient space for carrying out the molded product can be secured.

Since the rotating mechanism and the vertical moving mechanism of the chuck member 37 are separated as described above, the chuck member 37 can be mounted at a position away from the mold, and the molding product can be taken out efficiently without being restricted by the molding machine. Can be done. Further, the chuck member 37 can be moved between the take-out position and the release position with a smaller turning amount than the turning amount of the turning arm member 9, and the take-out cycle can be shortened. Further, when the chuck member 37 is moved between the take-out position and the release position, the vertical drive member 35 can be tilted, so that the overall height of the automatic molded product take-out apparatus 1 can be reduced.

[0032]

Therefore, according to the present invention, it is possible to mount the chuck member on a molding machine having a small mounting space by separating the rotating mechanism of the chuck member and the vertical mechanism thereof. Further, according to the present invention, the chuck member is gradually tilted at a constant speed between the take-out position and the release position to prevent the occurrence of a poor holding state during the take-out operation and to reliably perform the take-out operation. it can. Further, the present invention is
The height of the apparatus itself can be reduced to achieve miniaturization, and the tie bar in the molding machine can be reliably overcome to take out the molded product. Further, according to the present invention, it is possible to shorten the take-out cycle by setting the turning amount of the turning arm member to be small and turning the chuck member largely so as to be positioned at the release position apart from the molding machine.

[Brief description of drawings]

FIG. 1 is an overall perspective view of an automatic molded product take-out apparatus.

FIG. 2 is a front view of an automatic molded product take-out device.

FIG. 3 is an exploded perspective view showing a rotation mechanism of a chuck member.

FIG. 4 is a front view showing a rotating state of a chuck member.

[Explanation of symbols]

1 Automatic removal device for molded products 3 body frame 5 rotation axis 9 Rotating arm member 15 Fixed circular body 19 rotation axis 21 rotating body 23 Belt members 31 Front-rear movable member 33 Front-rear drive member 35 Vertical drive member 37 Chuck member

Claims (6)

(57) [Claims] 1. A drive member provided on a main body frame fixed above a mold of a molding machine for rotating a rotary shaft, and a base end portion fixed to the rotary shaft and a rotary shaft at a free end portion. Is rotatably supported, and has a rotation arm member at a predetermined angle, a fixed circular body fixed concentrically with the rotation axis, and a non-rotating attachment attached to the rotation axis. Body, a belt member stretched around a fixed circular body and a rotating body, a front-rear movable member movably supported in a front-rear direction by a support member attached to the rotating shaft, and the front-rear movable member in the front-rear direction. A front-rear drive member that moves to the front-rear movable member, a vertical drive member that is attached to the front-rear movable member, and a chuck member that is attached to the lower end of the vertical drive member. The drive member rotates the rotating arm member to the take-out position above the mold. Position the chuck member vertically when moved. When the rotating arm member is rotated by the drive member toward the release position on the front of the molding machine, the rotating shaft is moved from the rotating angle of the rotating arm member according to the difference in outer diameter between the fixed circular body and the rotating body. An automatic device for taking out a molded product, characterized in that the chuck member is gradually tilted to gradually move to a release position while being inclined. 2. The automatic molded product take-out device according to claim 1, wherein the fixed circular body and the rotating body are toothed pulleys having different numbers of teeth, and the belt member is a toothed belt. 3. The automatic molded product take-out device according to claim 1, wherein the fixed circular body and the rotary body are made of sprockets having different numbers of teeth, and the belt member is made of a chain. 4. The automatic molded product take-out device according to claim 1, wherein the front-rear driving member and the up-down driving member are cylinder members. 5. The automatic molded product take-out device according to claim 1, wherein the front-rear driving member and the up-down driving member are composed of a feed screw and a nut member connected to an electric motor. 6. The automatic molded product take-out device according to claim 1, wherein the front and rear drive members and the vertical drive member are a combination of a cylinder member and a feed screw and a nut member connected to an electric motor.