JPH0439228Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a molded object inversion loading device for inverting and loading a soft synthetic resin molded object, particularly a sheet-like molded object, formed by a molding device onto a mounting table. .

Prior Art A molded article molded by a molding device is normally once loaded on a mounting table and then transported to the next step.

The molded product taken out of the molding device may have its surface facing up, but in many cases, for example, when performing transfer molding with an uneven pattern on the mold surface, it is removed from the mold of the molding device with its surface facing down. be molded. In such a case, if the molded bodies are loaded as they are on the mounting table, each molded body will have its back side facing upward. This makes it very difficult to perform quality inspections on the surface of each molded body. Conventionally, the molded product taken out of the molding device was manually turned upside down and then placed on a mounting table.
The reversing operation performed by a worker is inefficient since the molded product is soft and flexible, and is also undesirable in terms of reducing the number of workers.

Purpose The purpose of the present invention is to eliminate the above-mentioned conventional drawbacks and to provide a molded object reversing and loading device that can automatically reverse and load molded objects made of soft synthetic resin without manual intervention.

Configuration In order to achieve the above object, the present invention includes a fluid pressure actuated cylinder that is supported so as to be rotatable back and forth in the conveying direction of the molded body and the opposite direction centering on the lower part, and a hydraulic cylinder that is provided at the upper part of the cylinder. , a molded object gripping device located above the molded object mounting table;
an initial position of the fluid pressure actuated cylinder when the gripping device starts to grip the front end region of the soft synthetic resin molded body being conveyed to the molded body mounting table;
An operation of reciprocating and rotating between the final position when the gripped molded object assumes a substantially vertical posture and the lower end of the molded object is in contact with the molded object mounting table or is located slightly above the molded object mounting table. When the device and the hydraulically actuated cylinder are rotated from their initial position to their final position, the piston rod of the cylinder is withdrawn from the cylinder tube and extends its entire length; a control means for controlling the hydraulic cylinder to retract the cylinder, and a control means for controlling the hydraulic cylinder to retract the cylinder, and a control means for controlling the hydraulic cylinder so as to retract the cylinder, and a control means for controlling the hydraulic cylinder so as to retract the cylinder, and a control means for controlling the hydraulic cylinder such that the gripping action of the gripping device on the compact is released during or after the return of the hydraulic cylinder from its final position to an initial position. A molded object reversing and loading device is proposed, which includes a control means for controlling a gripping device.

According to the above configuration, when the fluid pressure actuated cylinder is in the initial position, the gripping device provided at the top of the cylinder holds the molded body made of soft synthetic resin that is being conveyed to the mounting table with its back side facing up. The front end area is gripped and the actuating cylinder is then rotated in the direction of conveyance of the molded bodies, extending its entire length, so that when the cylinder reaches its final position, the molded bodies are in an approximately vertical position on the mounting table. Next, the hydraulic cylinder returns from the final position to the initial position while reducing its overall length, and at a suitable time or after returning, the molded body is released from the gripping action by the gripping device and placed on the mounting table with its surface facing upward. placed.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows an example in which the present invention is applied to an inverting and loading device for molded bodies made of soft synthetic resin formed by a vacuum forming apparatus. A vacuum forming mold 1 of a vacuum forming apparatus is supported by a drive cylinder 2 so as to be movable up and down between an operating position shown in the figure and a retracted position below this.

A band-shaped thermoplastic synthetic resin material 3 fed in the direction of arrow A from a supply section (not shown) is heated and softened by a heating device (not shown), and is placed above the mold 1 that has been lowered to the retracted position. is transferred to and stopped. At the same time, the vacuum forming mold 1 is lifted to the illustrated operating position by the actuation of the drive cylinder 2 while operating its exhaust function, and the material 3 is attracted to its forming surface. In this way, the raw material 3 is vacuum-formed to obtain a molded body, and this molded body is cooled by a cooling device (not shown). Upon completion of cooling, the mold 1 is lowered, whereby the molded body is released from the mold 1 with its surface facing downward, and is again transferred a predetermined distance in the direction of arrow A. Along with this, the material portion to be molded next is transferred above the mold 1 and the next molding operation is performed. Thereafter, the materials are sequentially molded in the same manner.

Molded body 3a made of soft synthetic resin that has left the mold 1
are sent in the direction of arrow A by a conveyor belt 6 with the surface 4 facing downward, and are sequentially cut by a cutting machine 7 in a manner described later to be separated into individual molded bodies,
Finally, the compacts are loaded one by one onto the compact mounting table 9 of the reversing and stacking device 8 according to the present invention. The illustrated mounting table 9 comprises a base plate 12, a pallet 10 placed thereon, and a jig 11 for forming and holding a molded body supported thereon.

As shown in FIG. 2, the compact reversing and loading device 8 has a pair of fluid pressure actuated cylinders 13, each of which includes an air cylinder or a liquid cylinder, arranged on both sides of the compact mounting table 9. The hydraulic cylinder 13 has a cylinder tube 14 on the lower side.
A piston rod 15 that slides within the tube 14 is positioned above the cylinder tube 14, and the lower portion of the cylinder tube 14 is pivotally connected to a support member 17 via a support pin 16. In this way, the fluid pressure actuated cylinder 13 has a lower part centered on the molded body 3a.
It is supported so as to be rotatable back and forth in the transport direction A and the opposite direction.

A gripping device 1 is attached to the top of each hydraulic cylinder 13, in the example shown at the top of its piston rod 15.
8 are provided respectively. The gripping device 18 shown by way of example in the figure has an air cylinder 19 (or liquid cylinder) fixed to the upper end of the piston rod 15, and the piston rod 20 and cylinder tube 21 of this cylinder 19 have links 22, 2
3 are each pivotally supported, and these links are pivotally connected to each other via a pin 24 approximately in the middle. There are claws 25, 2 at the tips of both links 22, 23.
6 is provided. The gripping device 18 is located above the molded body mounting table 9.

Each hydraulic actuation cylinder 13 is connected to the actuation cylinder 2
It is pivoted back and forth between the initial position shown in FIG. 1 and the final position shown in FIG. 4 by means of an actuating device constructed as 7. The working cylinder 27 also consists of an air or liquid cylinder, and its cylinder tube 28
is pivotally connected to the support member 17, and the tip of its piston rod 29 is pivotally connected to the tube 14 of the aforementioned hydraulic cylinder 13. Instead of using the actuating cylinder 27 as the actuating device, other suitable actuating means such as an electric motor may be used.

When the mold 1 is performing the molding operation as described above, the molded body 3a also stops, and its front end 30 remains stationary at the cutting machine 7 as shown in FIG. At this time, the fluid pressure operating cylinder 13
is also stationary at the initial position shown in FIG. When the molding operation in the mold 1 is completed, the molded body 3a begins to be conveyed in the direction of the arrow A as described above, and the front end 30 of the molded body 3a is then held by the gripping device 18 as shown by the chain line in FIGS. 1 and 2. It enters between the claws 25 and 26 of. At this time, the air cylinder 19 starts operating the gripping device 18, and the rod 20 is drawn into the tube 21. For this reason, the claws 25 and 26 provided at the tips of both links 22 and 23 approach each other as shown in FIG. to hold. Thus, when the hydraulic cylinder 13 is in the initial position, the gripping device 18 begins to grip the front end region of the soft synthetic resin molded body 3a being conveyed to the molded body mounting table 9.

The timing for starting the operation of the air cylinder 19 is controlled by a timer, from when the front end 30 of the molded body 3a starts moving from the cutting machine 7 until it reaches between the two claws 25 and 26, and after a predetermined period of time has elapsed. The air cylinder 19 may be controlled to start operating.

As soon as the gripping device 18 grips the front end region of the shaped body 3a, the actuating cylinder 27 begins to actuate and its rod 29 is drawn into the tube 28, thereby causing the hydraulically actuating cylinder 13 to engage the pivot pin 16.
The molded body 3a begins to rotate in the transport direction A around the center. At the same time, the hydraulic cylinder 13 itself starts to operate, and its rod 15 connects to the tube 14.
The entire length of the cylinder 13 is extended.
As a result, the molded body 3a whose front end region is grabbed is carried above the mounting table 9 while its front end is pulled up. The moving speed of the molded body at this time is material 3
corresponds to the movement speed of

As shown in FIG.
When the boundary 31 between the molded body 3a being pulled up by the molded body 3a and the molded body 3a formed next reaches the cutting machine 7, the fluid pressure actuated cylinder 13 just touches the base plate 12 of the mounting table 9. The first limit switch 32a attached to the
The operation stops and the molded body comes to rest. At the same time, the cutting machine 7 starts operating and cuts the boundary portion 31 between both molded bodies. After the predetermined time required for the cutting operation has elapsed, both cylinders 13, 27 start the above-described operation again. This operation start timing can also be controlled by, for example, a timer.

Since the cut molded body 3a is made of soft synthetic resin, the portion near the portion gripped by the gripping device 18 is curved and deformed by the center of gravity of the molded body 3a itself, and the molded body 3a hangs downward.

When the hydraulic cylinder 13 reaches the final position shown in FIG. 4, it activates the second limit switch 32b provided on the mounting table 9. This signal causes both cylinders 13 and 27 to start an operation opposite to the previous operation. That is, each rod 15, 29 is actuated such that hydraulic cylinder 13 shortens its length and actuation cylinder 27 extends its length.

As mentioned above, when the hydraulic cylinder 13 rotates from its initial position to its final position, the piston rod 15 of the cylinder 13 is withdrawn from the cylinder tube 14 to extend its length;
The hydraulic cylinder 13 is configured to reduce its overall length when rotating from the final position to the initial position.
It is controlled by a control means including a limit switch 32b.

When the hydraulic cylinder 13 reaches its final position, the molded body 3a, gripped in its front end region by the gripping device 18, assumes an approximately vertical position, with its lower end touching the top of the mounting table 9, or It is positioned slightly above the mounting table 9 and is in a state of floating in the air. At this time, the left side surface of the molded body in FIG. 4 is the front surface 4, and the right side surface is the back surface 5.

As both cylinders 13 and 27 perform the above-mentioned operations opposite to the above, the hydraulic cylinder 13 rotates in the direction opposite to the arrow A while reducing its length.
During or after returning to the initial position shown in the figure, the air cylinder 19 of the gripping device 18 is actuated and the rod 20 is moved to the tube 2.
1, thereby releasing the gripping action on the molded body 3a. In this way, the gripping action of the gripping device 18 on the compact 3a is released during or after the return of the hydraulic cylinder 13 from its final position to its initial position.
The gripping device 18 is controlled by control means. As a result, as shown in FIG.
It is placed on top of 1. In exactly the same manner, the next molded body 3b is placed one after the other on the already loaded molded body 3. In this way, each molded product can be automatically reversed and placed, and work such as quality inspection can be easily performed.

The molded object mounting table 9 on which the molded objects 3a and 3b are placed is supported so as to be movable up and down, and in the illustrated example, the base plate 12 of the mounting table 9 is supported on the piston rods 34 of an appropriate number of elevating cylinders 33. . As the molded bodies 3a, 3b are stacked on the mounting table 9, the piston rod 34 descends, and the height of the stacked molded bodies is always kept constant. In this way, the molded bodies can be stacked one after another on the mounting table 9 without any problem.

It is desirable that the gap between the pair of fluid pressure operated cylinders 13 can be freely adjusted according to the width size of the molded bodies 3a and 3b. This can be easily achieved by doing this. Furthermore, it is advantageous if the positions of both cylinders 13, 27 in the direction of arrow A can be adjusted according to the lengths of molded bodies 3a, 3b, since molded bodies of any length can be reversely stacked.

The present invention inverts a molded article formed by a molding device other than a vacuum forming device, for example, a pressure forming device.
It can also be applied to loading equipment. It can also be applied to vacuum/pressure forming of single sheets, and for taking out, reversing, and stacking press-formed objects.

Effects According to the present invention, molded bodies can be automatically reversed and loaded, making it possible to improve work efficiency and reduce the number of workers.

[Brief explanation of drawings]

Fig. 1 is a partial cross-sectional explanatory side view showing the overall configuration for inverting and stacking molded bodies obtained by a vacuum forming device, Fig. 2 is a perspective view of the formed body reversing and loading device, and Fig. 3
The figure is a partial cross-sectional side view showing the situation during inversion of the compact, Figure 4 is a partial cross-sectional side view when the hydraulic cylinder reaches the final position, and Figure 5 is a partial cross-sectional side view at the end of the inversion and loading. FIG. 6 is a perspective view when the gripping device grips the molded article, and similarly to FIG. 2, the molded article is shown with chain lines. 8... Molded object reversal loading device, 9... Molded object mounting table, 13... Fluid pressure actuation cylinder, 14... Cylinder tube, 15... Piston rod, 18...
...Gripping device, A...Conveyance direction.

Claims (1)

[Claims for Utility Model Registration] A hydraulically actuated cylinder supported so as to be rotatable back and forth in the conveying direction of the molded object and the opposite direction centering on its lower part; A molded object gripping device located above the molded object mounting table and a fluid pressure actuated cylinder are connected to each other when the gripping device begins to grip the front end region of the soft synthetic resin molded object being conveyed to the molded object mounting table. The initial position and the gripped molded body assume a nearly vertical posture,
Is the lower end of the molded object in contact with the molded object mounting table?
or an actuating device for reciprocating rotation between a final position when the cylinder is located slightly above the mounting table; control means for controlling the hydraulic cylinder to extend its entire length when pulled out from the cylinder tube and to reduce its overall length when rotated from its final position to its initial position; A molded object reversing and loading device comprising: control means for controlling the gripping device so that the gripping action of the gripping device on the molded object is released during or after returning.