JP6991556B2 - Mold separation method and mold separation device - Google Patents

Description

The present invention relates to a mold separating method and a mold separating device.

As a mold separating device of this type, those described in Patent Document 1 (Japanese Patent Laid-Open No. 8-229617) and Patent Document 2 (Japanese Patent Laid-Open No. 2001-129695) are known.

In these conventional ones, the combined upper mold and lower mold are separated by the relative separation between the mold reversing device for mounting the upper mold and the mounting device for mounting the lower mold. ..

Japanese Unexamined Patent Publication No. 8-229617 Japanese Unexamined Patent Publication No. 2001-129695

The pair of upper and lower molds are connected by fitting the guide post and the guide bush. Therefore, when separating the upper mold and the lower mold, the axes of the guide post and the guide bush must be aligned and the two must be separated. However, in the conventional mold separating device, the guide post and the guide bush may stick and cannot be removed. In such an inseparable situation, if the relative separation between the mold reversing device and the mounting device is continued, the lower mold will be lifted from the mounting device and will be suspended in the air, and in the worst case, it may fall. was there.

Therefore, an object of the present invention is to provide a mold separating method and a mold separating device for detecting the above-mentioned suspended state and preventing the fall.

In order to achieve the above object, the present invention has taken the following measures. That is, in the mold separation method of the present invention, the combined upper mold and lower mold are separated by the relative separation between the mold reversing device for mounting the upper mold and the mounting device on which the lower mold is placed. In the mold separation method, when the detection device detects that the lower mold is lifted from the mounting device during the separation work , the separation work of the relative separation is stopped, and then the mold is placed with the mold reversing device. The separation work is restarted when the floating detection of the detection device is resolved by making the relative approach to the device .

When the separation work is stopped after the separation work is restarted, it is preferable to fix the lower mold to the mounting device so that the relative separation is performed.

The mold separating device of the present invention includes a mold reversing device for reversing an upper mold, a mounting device for mounting a lower mold, and an upper mold and a previously described mounting device attached to the mold reversing device. It has a separation device that relatively separates the lower mold mounted on the above-mentioned mounting device , and a detection device that detects that the lower mold is lifted from the above-mentioned placement device. The separation device includes the lower mold. When the detection device detects that the device is lifted from the mounting device, the relative separation is stopped, and then the relative approach is made, and when the detection of the lift of the detection device is canceled, the relative separation is restarted. ..

The detection device is preferably composed of any of an air sensor, a proximity switch, or a limit switch provided on the lower mold mounting surface of the above-mentioned mounting device.

According to the present invention, it is possible to detect a suspended state during the mold separation work and prevent the mold from falling.

It is a process drawing of the mold separation method which concerns on embodiment of this invention, and is the figure which mounts a pair of upper and lower mold sets on a mounting apparatus. The figure which shows the process of inserting a mounting device into a mold reversing device. The figure which shows the process of raising a mounting part. The figure which shows the process of lowering a mounting part and separating a lower mold from an upper mold. The figure which shows the state which moved the mounting device outward from a mold reversing device, and inverted the upper mold. The figure which shows the state which the lower mold is suspended in the air because the mold cannot be separated. The figure which shows the state which the lower mold is forcibly separated. Perspective view of the mold separator. Front view of the mold separator. Top view of the air floating pad. FIG. 10 is a cross-sectional view taken along the line AA of FIG. FIG. 11 is an enlarged view of part B. The plan view which shows the modification of the air floating pad. FIG. 13 is a sectional view taken along line CC. It is a process diagram of the mold coupling method, and is the figure which attaches the upper mold to a mold reversing device, and attaches a lower die to a mounting device. The figure which shows the process of inserting a mounting device into a mold reversing device. The figure which shows the process of raising a lower mold. The figure which shows the process of connecting the upper and lower molds. The figure which shows the state which carried out the combined upper and lower molds from a mold reversing apparatus.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
What is shown in FIGS. 1 to 7 is a process diagram of a mold separating method.
In this mold separation method, the combined upper mold and lower mold are separated by the relative separation between the mold reversing device for mounting the upper mold and the mounting device on which the lower mold is placed. Then, the lower mold is detected by the detection device to be lifted from the mounting device, and the relative separation is stopped.

In FIG. 1, the mold separating device includes a mold reversing device 1 and a mounting device 2. The mold reversing device 1 has a base portion 3 and a reversing portion 4 rotatably supported by the base portion 3. A mounting portion 6 for mounting the upper mold 5 is provided on the reversing portion 4. The mounting portion 6 is composed of a magnet clamp, and the back surface of the mold 5 is detachably attracted and fixed by a magnetic force.

The mounting device 2 has a trolley portion 7 and a mounting portion 8 provided on the trolley portion 7. A separation device 9 is provided between the trolley portion 7 and the mounting portion 8, and the mounting portion 8 can be raised and lowered with respect to the trolley portion 7 by the separation device 9. The separation device 9 drives the screw jacks 10 arranged at the four corners by one drive motor to move the mounting portion 8 in the vertical direction with high accuracy.

A detection device 11 is provided on the mounting portion 8. The lower mold 12 is placed on the detection device 11, and is configured to detect the floating of the mold 12. The detection device 11 is composed of either an air sensor, a proximity switch, or a limit switch.

In the method of separating the pair of upper and lower molds using the mold separating device, first, the mounting device 2 is positioned outside the mold reversing device 1, and the pair of upper and lower mold sets 5 and 12 are separated by a crane or the like. It is suspended and lowered onto the detection device 11 of the mounting portion 8 of the mounting device 2. The upper mold 5 and the lower mold 12 are connected by fitting the guide bush 13 and the guide post 14.

As shown in FIG. 2, the mounting device 2 is moved into the mold reversing device 1 so that the mold sets 5 and 12 face each other below the mounting portion 6 of the mold reversing device 1.

As shown in FIG. 3, the mounting portion 8 is raised by the separating device 9 of the mounting device 2, and the back surface of the upper mold 5 is closely fixed to the mounting surface of the mounting portion 6. A limit switch 11A is shown as the detection device 11.

As shown in FIG. 4, the mounting portion 8 is lowered by the separation device 9. Normally, the mounting portion 6 and the mounting portion 8 are parallel to each other, and the mounting portion 8 descends in parallel. Therefore, the guide bush 13 and the guide post 14 of the upper and lower molds 5 and 12 are separated without sticking. , The upper mold 5 and the lower mold 12 are separated.

As shown in FIG. 5, when the upper and lower molds 5 and 12 are separated, the mounting device 2 moves to the outside of the mold reversing device 1. The reversing portion 4 of the mold reversing device 1 is inverted by 180 degrees, and stops at a position where the mating surface of the upper mold 5 faces upward. The upper mold 5 and the lower mold 12 with the mating surfaces facing upward are transported to a repair location or the like by a crane or the like, and the mold is repaired, maintained and inspected.

FIG. 6 shows a state in which the guide bush 13 and the guide post 14 are stuck and cannot be removed during the separation operation from FIG. 3 to FIG. That is, for some reason, the axis of the guide bush 13 and the guide post 14 are displaced, the moving direction of the mounting portion 8 and the axis are displaced, and the guide bush 13 and the guide post 14 are twisted and become inseparable. .. If the lowering of the mounting portion 8 is continued in this state, a gap is created between the bottom surface of the lower mold 12 and the mounting surface of the detection device 11 of the mounting portion 8, and the lower mold 12 is suspended.

Therefore, in this embodiment, the detection device 11 detects the gap and stops the lowering operation by the separation device 9.
Then, the operation of raising and lowering the mounting portion 8 by the separation device 9 is repeated. By repeating such ascending / descending operations, the stick state is released and the upper and lower molds 5 and 12 are separated.

FIG. 7 is a diagram showing forced separation when the stick state is not released and separation cannot be performed even if the above vertical movement is repeated.

The lower mold 12 and the mounting portion 8 are fixed by the first fixing device 15 (for example, a bolt clamp). Further, the carriage portion 7 and the floor surface are fixed by a second fixing device 16 (for example, a hydraulic clamp). Then, the mounting portion is lowered by the separation device 9, and the lower mold is forcibly separated from the upper mold.

What is shown in FIGS. 8 and 9 is a detailed view of the mold separating device.

The mold separating device includes a mold reversing device 1 and a mounting device 2. The mold reversing device 1 has a base portion 3 and a reversing portion 4 rotatably supported by the base portion 3. A mounting portion 6 for mounting the upper mold 5 is provided on the reversing portion 4.

The reversing portion 4 has a pair of left and right rotating bodies 17 having an arcuate outer peripheral surface. A mounting portion 6 is provided between the pair of left and right rotating bodies 17. The base 3 has a pair of left and right frames 18, and the frames 18 are erected on a base plate (not shown). The frame 18 is provided with a bearing portion 19 that supports the outer peripheral surface of the rotating body 17 so as to be levitated. The support portion 19 is composed of a free-wheeling roller provided on the frame 18.

The mounting portion 6 is composed of a rectangular magnet plate in a plan view capable of attracting the back surface of the upper mold 5 by a magnetic force. Rotating bodies 17 are provided at both ends of the mounting portion 6. A reinforcing rib 20 is provided on the back surface of the mounting portion 66 to prevent the mounting portion 6 from bending.

The base 3 has a rotation drive unit 21 that rotates the rotating body 17. The drive unit 21 has a motor 22 provided on the frame 18 and a sprocket 23 provided on the output shaft thereof via a speed reducer connected to the motor 22. A driven tooth 24 that meshes with the sprocket 23 is provided on the side surface of the rotating body 17. The driven tooth 24 is composed of pins 26 provided between a pair of discs 25 provided on the side surface of the rotating body 17.

The mounting device 2 has a trolley portion 7 and a mounting portion 8 provided on the trolley portion 7. A separation device 9 is provided between the trolley portion 7 and the mounting portion 8, and the mounting portion 8 can be raised and lowered with respect to the trolley portion 7 by the separation device 9. The release device 9 drives the screw jacks 10 arranged at the four corners by one drive motor 27 to move the mounting portion 8 in parallel in the vertical direction with high accuracy.

The bogie portion 7 has a pair of front and rear wheels 29 traveling on a pair of left and right rails 28, and one wheel 29 is a drive wheel by a motor 30. One of the left and right wheels 29 is a wheel with a brim.

Guide bushes 31 are provided on the left and right sides of the carriage portion 7, and a guide post 32 slidably inserted into the guide bush 31 is provided on the mounting portion 8 to guide the vertical movement of the mounting portion 8. There is.

A detection device 11 is provided on the mounting portion 8. A mold 12 is placed on the detection device 11 and is configured to detect the floating of the mold 12. The detection device 11 is composed of an air sensor. The air sensor has a plurality of blocks 33 arranged in the mounting portion 8, an air ejection hole 34 is formed on the upper surface of the block 33, and the air ejection hole 34 communicates with the air ejection hole 34 in the block 33. (Not shown) is connected. The bottom surface of the mold 12 is placed on the upper surface of the block 33 so as to close the air ejection hole 34. A detection unit (not shown) for detecting the pressure of the supply air is provided in the block 33 or in the middle of the air pipe. When the bottom surface of the placed mold 12 is separated from the block 33 and a gap is formed, air is configured to leak from the air ejection hole 34, and the detection unit detects this air leak. The detection signal of this sensor is configured to stop driving the motor 27 of the separation device 9 via a control device (not shown).

The detection device 11 of the present invention is not limited to the air sensor, and may be any device as long as it can detect that the mold 12 is lifted from the mounting portion 8 such as a proximity switch or a limit switch.

The ones shown after FIG. 10 are those in which the detection device 11 is provided on the air floating pad 35.

As shown in FIGS. 10 to 12, the air floating pad 35 is movable so as to float on the substrate 36 fixed to the above-mentioned mounting portion 8 by air pressure and freely move in the XY plane. It is equipped with a plate 37. A handle 38 operated by an operator is provided on the side surface of the movable plate 37.

The upper surface of the substrate 36 is formed on a flat surface. A recess 39 is formed on the lower surface side of the movable plate 37, and the recess 39 serves as a compressed air reservoir. A labyrinth seal 40 is formed on the outer peripheral side of the air reservoir 39 to prevent leakage of compressed air in the air reservoir 39. The movable plate 37 is formed with an air passage 41 communicating with the air reservoir 39, and the air passage 41 is connected to a pressurized air source.

By supplying the pressurized air from the pressurized air source to the air reservoir 39, the movable plate 37 floats from the substrate 36 and becomes freely movable in the XY plane.

Detection devices 11 for detecting the lifting of the lower mold 12 are provided at the four corners of the upper surface of the movable plate 37.

The detection device 11 has a block 33 provided on the upper surface of the movable plate 37, the upper surface of the block 33 is formed on a flat surface, and the lower mold 12 is placed on the flat surface. An air ejection hole 34 is formed on the upper surface of the block 33, and the back surface of the lower mold 12 closes the air ejection hole 34 to detect that the lower mold 12 has risen from the block 33.

13 and 14 are modifications of the air floating pad, in which six movable plates 37 are provided on the substrate 36, each movable plate 37 is provided with an air reservoir 39, and each air reservoir 39 is provided. Pressurized air is supplied to the. Of the movable plates 37, air ejection holes 34 of the detection device 11 are formed on the upper surfaces of the movable plates 37 arranged at the four corners.

A device in which an air floating pad 35 provided with the detection device 11 having the above configuration is installed in the mounting portion 8 can also be used as a mold separating device.

Further, these air floating pads 35 are used as a mold coupling device as shown in FIGS. 15 to 19.

In FIG. 15, of the pair of upper and lower molds, the lower mold 12 is suspended and held by a crane or the like with the mating surface facing upward, carried on the mounting device 2, and provided on the mounting device 2. It is lowered onto the movable plate 37 of the air floating pad 35.

The upper mold 5 is also suspended and held by a crane or the like with the mating surface facing upward, lowered to the mounting portion 6 of the mold reversing device 1, and the back surface of the mold is attracted and fixed to the magnet clamp. The reversing portion 4 of the mold reversing device 1 is rotated 180 degrees so that the mating surface of the upper mold 5 fixed to the mounting portion 6 faces downward.

As shown in FIG. 16, the lower mold 12 on the mounting device 2 is inserted below the upper mold 5 by the movement of the carriage portion 7.

As shown in FIG. 17, the lower mold 12 is raised by the release device 9 of the mounting device 2 to approach the upper mold 5. When the guide post 14 of the lower mold 12 approaches the guide bush 13 of the upper mold 5, this ascending operation is switched from the continuous ascending operation to the sizing operation, and the next alignment step is started.

In the alignment step, pressurized air is supplied between the substrate 36 of the air floating pad 35 and the movable plate 37 to levitate the movable plate 37. By visual inspection, the movable plate 37 is manually moved freely in the XY plane so that the axis of the guide bush 13 of the upper mold 5 and the axis of the guide post 14 of the lower mold 12 coincide with each other. Then, the guide post 14 is inserted into the guide bush 13 while increasing the cun and aligning the center.

As shown in FIG. 18, when the alignment is completed, the lower mold 12 is raised by the separating device 9, and the coupling of the upper and lower molds 5 and 12 is completed. After the coupling is completed, the attractive force of the magnet clamp which is the mounting portion 6 is released, and the fixing of the upper mold 5 and the mounting portion 6 is released. The upper and lower mold sets 5 and 12 are lowered by the separation device 9 of the mounting device 2.

As shown in FIG. 19, after that, the upper and lower mold sets on the mounting device 2 are carried out of the mold reversing device 1, transported to the press machine by a crane or the like, incorporated into the press machine, and the mold trial work. Is done. In the case of a newly created mold, the mold is separated and inserted 10 times or more, and the mold is finished while aligning the teeth.

From the above description, the air floating pad 35 provided with the detection device 11 can be used as a mold separating device or a mold coupling device.

The embodiments disclosed this time are exemplary in all respects and are not restrictive. The scope of the present invention is shown by the scope of claims, not the above description, and includes all modifications within the meaning and scope equivalent to the scope of claims.

For example, the present invention can also be applied to a mold reversing device of the type described in Patent Document 2 (Japanese Unexamined Patent Publication No. 2001-129695). In this case, the separation device is provided on the mold reversing device side.

1 Mold reversing device 2 Mounting device 3 Base 4 Reversing part 5 Mold 6 Mounting part 7 Carriage part 8 Mounting part 9 Separation device 10 Screw jack 11 Detection device 11A Limit switch 12 Lower mold 13 Guide bush 14 Guide post 15 1st fixing device 16 2nd fixing device 17 Rotating body 18 Frame 19 Support part 20 Reinforcing rib 21 Drive part 22 Motor 23 Sprocket 24 Driven tooth 25 Disk 26 Pin 27 Motor 28 Rail 29 Wheel 30 Motor 31 Guide bush 32 Guide post 33 Block 34 Air ejection hole 35 Air floating pad 36 Board 37 Movable plate 38 Handle 39 Air pool 40 Labyrinth seal 41 Air passage

Claims (5)

In the mold separation method for separating the combined upper mold and lower mold by the relative separation between the mold reversing device for mounting the upper mold and the mounting device for mounting the lower mold.
When the detection device detects that the lower mold is lifted from the mounting device during the separation work, the separation work of the relative separation is stopped .
After that, the mold separation method is such that the mold reversing device and the mounting device are brought into relative contact with each other, and the separation operation is restarted when the floating detection of the detection device is resolved . The mold separation method according to claim 1 , wherein when the separation work is stopped after the separation work is restarted, the lower mold is fixed to the mounting device to perform relative separation. The mold separation method according to claim 1 or 2, wherein the detection device is composed of any of an air sensor, a proximity switch, and a limit switch provided on the lower mold mounting surface of the above-mentioned mounting device. A mold reversing device that inverts the upper mold and
A mounting device for mounting the lower mold and
A separation device that relatively separates the upper mold attached to the mold reversing device and the lower mold mounted on the above-mentioned setting device, and
It has a detection device that detects that the lower mold is lifted from the above-mentioned mounting device.
When the detection device detects that the lower mold is lifted from the mounting device, the separation device stops the relative separation, and then brings the lower mold closer to each other, and when the lifting detection of the detection device is canceled, the above-mentioned A mold separator configured to resume relative separation . The mold separating device according to claim 4, wherein the detection device is composed of any of an air sensor, a proximity switch, and a limit switch provided on the lower mold mounting surface of the above-mentioned mounting device.

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