JPS6157175B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a product transfer device for a molding machine such as a die casting machine or an injection molding machine.

Generally, when configuring an automated line for relatively large injection molding equipment, after the inspection after removing the cast product from the mold, the removal of the runner, etc. It is necessary to store the cast products together, and a product transfer device is required to transfer the cast products to this stock position.

The present invention has been developed in response to the above-mentioned needs, and is capable of chucking a cast product removed from a mold, transporting it to a predetermined position, rotating the chuck part vertically downward, and then transporting the product to a predetermined position. after,
To provide a product transfer device configured so that a chuck part can be lowered while chucking a cast product.

Hereinafter, details of the present invention will be explained along with embodiments shown in the drawings.

1 and 2 are for explaining the entire apparatus of the present invention, and the product transfer apparatus, which is designated by the reference numeral 1 as a whole, has a base frame 2 and two rails horizontally suspended on the base frame 2. It consists of a running frame 5 that can freely run on wheels 4 over 3 and 3. As is clear from FIG. 2, the front of the base frame 2 is a stepped portion 6 formed one step higher, and stoppers 7 are arranged at regular intervals on this stepped portion 6. As shown in FIG. 5, the stopper 7 has, as a driving source, a clevis-type cylinder 9, which has one end attached to the lower end within the base frame 2 and whose upper end rod is connected to the rotating arm 8. A rotating arm 8 is fixed to the outer end of a shaft 11 that is rotatably fitted into a bearing 10 fixed on the frame 2, and a running frame, which will be described later, is attached to the inner end of the shaft 11, as indicated by a chain line in FIG. A stopper plate 12 is disposed at a position where it does not interfere with the running of the running frame 5 and at a position where it prevents the running frame 5 from moving as shown by a solid line.

On the other hand, the traveling frame 5 is provided on the frame 3 so as to be freely movable, and is configured to be self-propelled using the motor 13 as a driving source. The traveling frame 5 itself has a pair of frames 5a in a state where it just straddles the rail 3, and between the two frames 5a, as shown in cross section in FIG. A swing frame 15 is attached to the frame 5a via a rotating shaft 14, which is rotatably supported. The swing frame 15 is formed into a substantially cylindrical shape, and a chuck device 16 arranged concentrically therein is arranged inside.

The chuck device 16 has a cylinder 17, as shown in cross section in FIG. There is. Two guide grooves 19 are formed in an annular shape on the cylinder 17 side, and two stoppers 2 attached to the swing frame 15 side are formed in the annular guide groove 19.
0 and 21 protrusions 22 are slidably fitted. Each of these annular guide grooves 19 has approximately
The protrusions 23 are protruded with a phase shift of 180°, and the protrusions 23 of each of the stoppers 20 and 21
2 is designed to stop at a position in contact with these protrusions 23.

A chuck device 16 also located within the swing frame 15
A cylinder 24 serving as a product chuck lowering device is arranged concentrically within the cylinder 17, and a plurality of chuck pawls 25 forming the product chuck are attached to the tip of the cylinder 24. The product chuck part lowering device is configured to allow the product chuck part to be lowered by the weight of the product chuck part and the chucked cast product 33, and when the product chuck part 33 is lowered, for example, the product chuck part is lowered by the chamber on the rod side of the cylinder 24. A pressure port block type four-way switching valve was used as the switching valve for the cylinder 24 so that both the head side chambers could communicate with the tank. By doing so, the cylinder 24 is provided with a damper mechanism.

As shown in FIG. 6, the chuck pawl 25 is rotatably attached via a bracket 27 protruding from the side surface of a block 26 attached to the tip of the cylinder 24, and the rear end of the chuck pawl 25 is The product is configured to be chucked by supplying air to an air cylinder 28 whose both ends protrude.

Further, a positioning arm 29 is fixed to one end of the rotating shaft 14 of the swing frame 15, and a guide roller 30 is rotatably supported on the outer end of the positioning arm 29. The stopper 7 is provided with a block 45 that the guide roller 30 comes into contact with when the swing frame 15 becomes vertical at the stopper. It is designed so that it can be positioned accurately.

Further, as is clear from FIGS. 3 and 4, a swing cylinder 31 is attached to the side of the swing frame 15 in parallel with the swing cylinder 31, and its sliding rod is arranged as shown in FIG. It is located on the side of the swing frame 15, and is configured so that the swing frame 15 can be rotated by a rack and pinion mechanism (not shown).

On the other hand, as is clear from FIG. 6, an operating handle 32 is attached to the tip of the cylinder 17 as shown by the chain line, and the operator can use this operating handle 32.
By rotating the cylinder 17, which is a rotary frame, using the chuck claw 25, the product chucked by the chuck claw 25 can be rotated approximately 180 degrees and the product can be inspected.

Furthermore, as is clear from FIGS. 1 and 2, in the retracted position of the traveling frame 5 with respect to the base frame 2, a cylinder knocks down the runner 33a protruding from one end of the product 33 chucked by the chuck pawl 25. 34 is attached below the base frame 2, and in front of this cylinder 34 is attached a hopper 35 for receiving and ejecting the removed runner 33a.

By the way, what is shown in FIG. 7 is a kind of safety device that is provided to prevent the traveling frame from floating when the traveling frame 5 is in the position shown in FIGS. 1 and 2. provided protrusion 5b
The hook 36 is rotatably supported on the side surface of the base frame 2 by a shaft 37, and the other end of the hook 36 is attached to the side surface of the base frame 2. It is rotatably connected to the tip of a rod 39 of a cylinder 38. Therefore, by operating the cylinder 38, the hook 36 can be rotated to lock or release the traveling frame 5.

A rod 40 is attached to the side surface of the traveling frame 5 at a position facing the stopper 7 so as to be slidable in the axial direction, and a limit switch 41 is attached to the rear end of the rod 40. Around the rod 40 are attached two blocks 42 fixed to the traveling frame 5, a block 43 fixed to the rod 40, and a compression spring 44 attached between the blocks 42 and 43. The rod 40 is normally pushed forward on the side where the stopper 7 is located, but when the traveling frame 5 moves forward and a predetermined portion of the tip of the rod 40 hits a predetermined stopper 7, the rod 40 moves forward. It is designed to move backward relative to the frame 5 and actuate a limit switch 41 at the rear end of the rod 40 to stop the traveling frame 5 from moving.

Here, the rod 40, the lit switch 41, and the like form a switch device that stops the travel of the traveling frame 5 by contact with the stopper 7.

Next, the operation of this embodiment configured as above will be explained.

First, the cast product 33 is taken out by a product taking out device (not shown) and chucked by the chuck claw 25 as shown in FIG. At this time,
As is clear from FIG. 2, the runner 33a of the cast product 33 is checked to be located in front of the cylinder 34. Then, the cylinder 34 is actuated and its rod moves rapidly forward, knocking down the runner 33a and causing it to fall into the hopper 35. When the removal of the runner 33a is completed, the operator operates the operating handle 32, rotates the chuck device 16, and inspects the outside of the cast product 3.

After the inspection is completed, the motor 13 is started to move the traveling frame 5 forward. Running frame 5
As the vehicle moves forward, the stoppers 7 are activated according to a predetermined sequence, but normally it is desirable to adopt a sequence in which the stoppers 7 are activated sequentially from the traveling frame 5 side.

Incidentally, among the stoppers 7, the stopper 7a closest to the traveling frame 5 side is a stopper for removing defective products. That is, if it is detected by an operator's inspection that the cast product 33 has a defect in appearance, the stopper 7a is placed in a state that causes the traveling frame 5 to stop traveling, and the traveling frame 5 is allowed to move forward. Accordingly, the tip of the rod 40 protruding from the side surface contacts the stopper piece 12 of the stopper 7a, and when the limit switch 41 detects the retreat of the rod 40, the brake is applied to the motor 13, and the travel of the traveling frame 5 is stopped. be done.

When the traveling frame 5 stops, the swing cylinder 31
is activated, and the swing frame 15 is rotated 90 degrees so that the chuck pawl 25 side faces downward. At this time,
The cylinder 24 housed in the cylinder 17 of the chuck holder 16 acts as a damper, and the chuck pawl 25
While holding the cast product, it slowly descends naturally due to its own weight. Then, the product 33 is gently lowered onto a cart 46 or the like as shown in FIG. 2, for example, and the chuck claw 25 is opened to release the product 33.

This operation also works when the cast product is defective.
The same is true for non-defective products, only because the position at which the product is dropped is different. That is, if the product is defective, it is unloaded onto the cart 46, and if it is non-defective, it is unloaded onto the cart 47 in large numbers.

If the cast product 33 is of good quality, many stoppers 7
In this case, the stoppers 7 are sequentially operated from the right side in FIG. 2, for example. The order of operation of the stoppers 7 can be appropriately selected and set in advance. When the traveling frame 5 moves forward and is stopped by the operation of the first stopper 7, rod 40, limit switch 41, etc., the swing frame 15 rotates 90 degrees by the action of the swing cylinder 31, and the cylinder 24 and the chuck pawl 25 rotate. looks down. In this state, the product chuck attached to the tip of the piston rod of the cylinder 24 moves downward due to its own weight, and the cast product 33 is removed from the cart 47 and other cast products already loaded on the cart 47. The product chuck part stops when the product is gently placed on top of the product. In this case, since the cast product 33 is allowed to fall under its own weight, it will not be damaged when it is lowered. Here, when the preset timer times out, the chuck is opened and the cast product 33 is released. When the cast product 33 is loaded on the truck 47, the cylinder 24
Activate to raise the chuck, and then
The swing frame 15 is returned to the horizontal state, and the traveling frame 5 is moved backward. When the traveling frame 5 is in the retracted position, the chuck part is next to the cast product 33.
After grasping the runner, the product is inspected and the runner is removed as described above, and the traveling frame 5 is moved forward. In this case, the first stopper 7 is returned to a position where the traveling frame 5 does not stop traveling. Therefore, the running frame 5 is moved to the second stop 7
By stopping at the position and performing the above-mentioned operation,
The cast product 33 is placed on the second position of the cart 47. In this way, by sequentially operating the stoppers 7 and reciprocating the traveling frame 5, the cast products 33 are sequentially loaded onto the truck 47.

In addition, when the chuck device 16 rotates 0 degrees and faces downward, in the unlikely event that the chuck device 16
It is conceivable that the running frame 5 may move slightly backward, the running frame 5 itself may also stop at a slightly retreated position, and the stopping position of the running frame 5 may be slightly shifted. The swing arm 29 attached to the side of the swing frame 15 is also rotated, and the stop position of the guide roller 30 provided at the tip thereof is regulated by the block 45 of the stopper 7. The traveling frame 5 is pulled forward by that amount and adjusted to a precise position, and the swing arm is rotated and stopped downward at the precise position.

In addition, in the present invention, the stopper 7 is connected to the shaft 11.
Although the stopper 7 is rotated around the axial direction, the stopper 7 may be moved back and forth in the axial direction to operate or release the stopper 7.

Also, the swing frame 15 is run in a horizontal state, stopped at the stopper 7, and then turned downward.
Instead of lowering the chuck of the product, the swing frame 15 is moved downward first, and after stopping at the stopper 7, the cylinder 24 is operated while the chuck remains facing downward, so that the product lowers the chuck. You may also do so.

As is clear from the above description, according to the present invention, the traveling frame that can run on the base frame can be stopped at a predetermined position by the operation of the stopper. Loading can be done reliably and easily. In addition, a swinging frame that can be moved between horizontal and vertical positions is installed on the traveling frame.
A chuck device for chucking the product is attached to this swinging frame, and a stopper placed on the base frame is activated to stop the traveling frame, and at the same time, the swinging frame is vertically displaced and the weight is lifted by the action of a cylinder with a damper mechanism. Because the structure allows the product to be lowered silently, it is possible to automatically transport the cast product taken out from the mold of the injection molding device to the target position, and to avoid undue external force on the cast product. Since the transfer can be carried out without causing any damage to the product, it has excellent effects such as preventing damage to the product.

[Brief explanation of the drawing]

The figure explains one embodiment of the present invention.
The figure is a plan view, Fig. 2 is a front view, Fig. 3 is a right side view, Fig. 4 is a sectional view taken along line AA in Fig. 1, Fig. 5 is a sectional view taken along line BB in Fig. 1, FIG. 6 is a longitudinal side view of the safety device, and FIG. 7 is a front view of the positioning mechanism. DESCRIPTION OF SYMBOLS 1... Product transfer device, 2... Base frame, 3... Rail, 5... Traveling frame, 7, 7a... Stopper, 12... Stopper piece, 13... Motor, 14
... Rotating shaft, 15 ... Swinging frame, 16 ... Chuck device, 17 ... Cylinder (rotating frame), 1
9... Guide groove, 20, 21... Stopper, 24...
... cylinder, 25 ... chuck claw, 29 ... positioning arm, 31 ... rocking cylinder, 32 ... handle, 40 ... rod, 41 ... limit switch.

Claims (1)

[Claims] 1. A swinging frame is attached to the running frame so that it can swing freely around an axis perpendicular to the running direction of the running frame, and a product chuck is slidably attached to the swinging frame, so that it can be moved at right angles to the running direction of the running frame. A freely provided stopper is placed at the running position of the running frame, and a switch device is provided on the running frame to stop the running of the running frame when it comes into contact with the stopper, and the product chuck is held facing downward at the stop position of the running frame. A product transfer device for an injection machine, in which a product chuck lowering device, which is structured to be lowered by the weight of the product chuck, is installed in a swing frame.