JPH0216835Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention checks whether the ejection device of the mold is working properly before setting the mold in the molding machine, and if it is working correctly, it is left as is. This relates to a tool for checking the operation of a mold ejecting device, which is used to disassemble the mold if it does not work properly, remove the cause of the problem, reassemble it, and set it in the molding machine.

(Prior Art) A fixing plate for a mold to a molding machine has an opening into which a piston of a hydraulic cylinder of the molding machine enters when the mold is set in the molding machine. The molding machine opens the mold after molding the product into the mold cavity.
Next, the piston of the hydraulic cylinder is thrust into the opening and pushes the ejector plate built into the mold, whereby the ejector pin in the mold separates the product from the cavity and demolds it. It usually takes 20 to 30 minutes to replace the mold set in the molding machine. If the ejecting device of a mold newly set in a molding machine is malfunctioning, the mold should be removed from the molding machine again, disassembled to remove the source of the malfunction, reassembled, and set in the molding machine. need to be done, and it takes more time.

For this reason, before setting the mold in the molding machine, conventionally the mold was placed on the table of the drilling machine with the stationary plate facing upward, a pin that could be inserted into the opening of the stationary plate was attached to the check of the drilling machine, and the pin was pinned by operating the drilling machine. The mold is inserted into the opening from above, and the ejection device of the mold is checked in advance to see if it is working properly.

(Problem that the invention aims to solve) Since the mold is a heavy object, it takes several people to carry it to place it on the table of the drill press, and to take it off the table of the drill press after checking and carry it to the molding machine. In addition to requiring a worker, there is a risk of injury if the mold is accidentally dropped during transportation.

(Means for Solving the Problems) Therefore, the present invention provides a base having a fixing part that is removably attached to a fixing plate for a molding machine, and an upright part, and an upper end of the upright part of the base. A mold ejecting device characterized by comprising a manually operated screw lever pivotally connected at one end, and a rod that is pressed down by the screw lever to operate an ejector plate of the mold. Regarding the operation confirmation tool.

(Function) Place the mold with the fixed plate facing upward, align the lower end of the rod with the opening of the fixed plate, fix the fixed part to the fixed plate, and install the upright part on the fixed plate. Then, use the screw lever to lower the rod and use the lower end of the rod to push down the ejector plate inside the mold to check if the ejection device is working properly.

(Example) In each of the illustrated embodiments, 1 is a base, 2 is a fixed part thereof, 3 is also an upright part, 4 is a lever lever,
5 indicates a rod.

In the embodiment shown in Figs. 1 and 2, the fixing part 2 is a folded U-shaped member that is replaceably attached to the front end of the upright part 3 placed on the fixed platen 6 of the mold with a screw, and the inside of the U-shape is Receive the edge of the fixed platen 6, turn the tightening screw 7 screwed upward into the lower piece of the U-shaped member, and bring the upper end of the tightening screw into contact with the lower surface of the fixed plate, and then connect the upper piece of the U-shaped member with the upper end of the tightening screw 7. The base is fixed to the fixed platen 6 of the mold between the tightening screws.

Several types of U-shaped members are prepared depending on the thickness of the fixed plate 6, and if the fixed plate is too thick to fit between the upper and lower pieces, replace it with a U-shaped member that can accommodate the fixed plate. .

The upright portion 3 has a vertically elongated hole at its upper end, and one end portion of the screw lever is gripped to the upright portion 3 by a fulcrum pin 8 and a nut at a portion passing through the vertically long hole. The screw lever 4 has several holes 9 scattered at intervals in the longitudinal direction in a portion projecting outward from the longitudinal hole.
The rod 5 also has a groove 10 open at the upper end and a hole 11 crossing this groove, and the screw lever 4 can be received in the groove 10.

To check the operation of the mold ejection device, place the lower end of the rod 5 into the opening 6' formed in the stationary platen 6, stand it up, and press the screw lever 4 pivotally attached to the upright part 3.
into the groove 10 at the upper end of the rod, the fixing part 2 of the base is fixed to the edge of the fixed plate as described above, the upright part 3 is installed on the fixed plate, and the hole 11 at the upper end of the rod is inserted.
Pass the pin 12 through the hole 9 of one of the screw levers 4 that communicates with this, and if necessary, screw a nut onto the tip of the pin to prevent the pin 12 from coming off, and then push the screw lever 4. The ejector plate 13 in the mold is pushed down with the lower end of the rod against the spring 14' acting on the ejector pins 14, and each ejector pin is pushed down into the cavity 15 of the mold.
Inspect whether the product is being extruded correctly. The downward-facing surface of the mold with the cavity is placed on a platform 16 that serves as a suitable pillow placed on the surface plate, and lifted away from the surface plate, and the inspection is performed by looking through the gap and checking each ejector pin. Check to see if the tip of No. 14 protrudes from the cavity. Therefore, the mold is placed on the stand 16 avoiding the cavity.
Also, since the screw lever 4 pivots around the fulcrum pin 8, the rod 5 is lowered vertically, so the hole 9
..., or 11 is set to be slightly larger than the diameter of pin 12.

After the inspection is completed, the tightening screw 7 is loosened, the fixed part is removed from the mold, and the rod 5 is pulled out from the opening 6' of the fixed plate.

In the embodiments shown in FIGS. 3 and 4 as well, one end of the screw lever 4 projects into the vertically elongated hole at the upper end of the upright portion 3 and is pivoted by the fulcrum pin 8. The base 1 is provided with a projecting piece 17 that projects briefly from the lower end of the upright portion 3 in the same direction as the screw lever, and this projecting piece 17 is provided with a through hole 18 through which the rod 5 can move in the vertical direction. The fixing part 2 of this embodiment includes an extension piece 19 that extends long in the opposite direction to the projecting piece 17, and a U-shaped member 20 that has a hole through which the extension piece can pass through along the lower surface of the upper piece or the upper surface of the lower piece. A tightening screw 7 is screwed into the upper or lower piece of the U-shaped member 20.

Note that the U-shaped member 20 holds the edge of the fixed platen 6 of the mold between its upper or lower piece and the extension piece 19, fixes the base 1 to the mold by tightening the tightening screws 7, and fixes the upright part 3 to the mold. Since it is installed on a fixed platen, it is advisable to prepare several types with different distances between the upper and lower pieces depending on the thickness of the fixed plate, as in the previous embodiment.

In this embodiment, in order to test the operation of the mold ejection device, place the mold with the side with the cavity facing down on the stands 16, 16 in the same manner as in the previous embodiment, and insert the lower end of the rod 5. into the opening 6' of the fixed plate, slide the U-shaped member 20 along the extension piece 19, place the lower piece under the lower surface of the fixed plate, and insert the tightening screw 7 threaded into the upper piece. Tighten and install the upright part 3 on the fixed platen. Then, the screw lever 4 is pressed down, and the lower surface of the lever presses down on the rod 5, and the lower end of the rod presses down the ejector plate 13 in the mold. The ejecting pin 14 is the cavity 1
Check to see if the product protrudes smoothly as if it were peeled off from 5. After the inspection, the tightening screw 7 is loosened and the rod is pulled out from the opening 6'. still,
In this embodiment, a coil spring 21 is fitted into the rod 5, and when the rod is pushed down with the screw lever 4, the coil spring is compressed between the lower surface of the head of the rod and the protruding piece 17. When the depression of step 4 is released, the rod and lever lever may be pushed up to their original states by the restoring force of the coil spring. Furthermore, the length of the rod 5 is approximately equal to the distance between the lower surface of the lever and the lower surface of the upright portion 3 when the lever is horizontal as shown in the figure, and the length is the same depending on the thickness of the fixed platen 6. It is also possible to prepare an auxiliary piece 5' that can fit into the opening 6', and to replaceably attach the auxiliary piece 5' to the lower end of the rod 5 with a screw or the like, the length of which matches the thickness of the stationary platen.

(Effect of the invention) According to the present invention, the tool is brought to the mold, the fixed part is fixed to the fixed plate of the mold, the upright part is installed on the fixed plate, and the lower end of the rod is attached to the fixed plate. A worker can inspect and confirm the condition of the ejection device by putting it into the opening and pressing down on the rod with the lever lever.

Therefore, it is possible to eliminate the trouble and danger of having several workers carrying the mold onto the table of the drilling machine and taking it down after checking. Moreover, the structure of this tool is simple, and it does not take up much space to store.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of the first embodiment of the tool of the present invention, Fig. 2 is a side view of the same assembled and fixed to the mold, and Fig. 3 is a perspective view of the second embodiment in an exploded state. , Fig. 4 is a partially sectional side view of the same as above assembled and fixed to the mold, in which 1 is the base, 2 is the fixed part, 3 is the upright part, 4 is the lever lever, 5 indicates rod.

Claims (1)

[Scope of utility model registration request] A base comprising a fixing part that is removably attached to a fixing plate for a mold to a molding machine, and an upright part, and a manual lever lever having one end pivoted to the upper end of the upright part of the base. A tool for checking the operation of a mold ejecting device, comprising a rod that is pressed down by the screw lever to operate an ejector plate of the mold.