JPS5890910A - Device for releasing core die from cement pipe with core die - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Invention 1) O-cotton cement pipes, gas-reinforced Ibi cement pipes, glass fiber reinforced synthetic resin pipes, etc. When the cement pipe does not warp, a strong compressive force temporarily applied to the end of the cement pipe causes the end of the cement pipe to be locally damaged.

FIG. 1 is a diagram showing an apparatus that supplies an asbestos cement pipe with a core to a demolding table and sends the remaining asbestos cement pipe to the next process after the core has been removed.

FIG. 2 is a side view of the onion mold demolding device that supports the present invention, showing a state in which demolding is started immediately before the core mold is pulled out in the direction of the dotted arrow.

Figure 3 is an enlarged view of the locking device and its operating device for removing the core from an asbestos cement pipe with a core, Figure 4 is an enlarged side view of the locking device operating device, and Figure 5 is the locking device. FIG. 6 is a plan view of the tool actuating device, and is a diagram showing the device for completely feeding the core mold after demolding.

In FIG. 1, reference numeral 1 denotes a belt conveyor, which is installed so that asbestos cement pipes 2 with core molds are sent from the previous process.

The asbestos cement pipe 2 with a core is wrapped with a thin layer of asbestos cement several times to a constant thickness around the outer periphery of the core 3 excluding both ends using a pipe making device (not shown). (not shown) and is in a semi-cured state.

4 is an asbestos cement pipe feed detection plate, and air cylinder 5
As a result of the operation, the asbestos cement pipe delivery plate 4 is rotated from the solid line position to the dotted line position at all six points.

The demolding table 7 horizontally supports the demolded asbestos cement pipe 8 until it is sent to the next culm via the pedestal 9 after the core mold 3 is pulled out from the cored asbestos cement pipe 2.

Approximately on the right half of FIG. 2 is shown a fixing device for the cored asbestos cement pipe 2, which includes a plurality of fixing devices, at least one of which is movable, as shown in detail in FIG. It consists of a fixed member consisting of two pieces, which are relatively movable apart from each other, and hold the outer periphery of the end of the asbestos cement pipe when the core is pulled out. Prevents movement in the axial direction.

In the illustrated embodiment, the fixing member is shown as consisting of a fixing plate 12 and a movable plate 11. Conversely, when the air cylinder 10 is activated, the movable plate 11 functions as a collar and also serves as an outer peripheral portion of the asbestos cement pipe. I am trying to embrace it. In addition, several types of moving plates 11 with different inner diameters are prepared and are replaced according to the outer diameter of the asbestos cement pipe with a core.

When the core mold 3 has been pulled out, the movable plate 11 is raised. When the moving plate 11 rises, the first
The air cylinder 5 shown in the figure is activated, and the demolded asbestos cement pipe 8 is sent by the asbestos cement pipe delivery plate 4 from the demolding table 7 to the receiving table 9 to the next step.

Here, the asbestos cement pipe feeding plate 4 is designed to operate in the opposite direction and return to its original position after feeding the demolded asbestos cement pipe 8 to the pedestal 9.

Further, in FIG. 2, when the moving plate 11 is lowered, the limit switch TJ S 3 f is turned on, and the truck 13 is moved forward from the position shown by the dotted line to the position shown by the solid line.

Reference numeral 14 denotes a pedestal, and one demolding table 7 is mounted on the pedestal 14. In order to place the cored asbestos cement pipe 2 on the demolding table 7, a receiver having the same diameter or a slightly larger diameter is formed thereon.

A fixing plate 12 is attached adjacent to the demolding table 7.

In FIG. 3, 3 is a core type, 15 is a retaining ring welded and fixed to the inner circumferential end of the core type 3, and 16 is a locking tool that engages with the engagement ring. When the cylinder 19 is fully operated and the locking rod 18 is lowered from the dotted line position to the solid line position using the fulcrum 17 as the 5-axis, the locking tool also lowers and engages with the engagement ring 15.

The core type is usually hollow and has a retaining ring on which a locking device can be hooked, but it may be solid if a locking device or the like can be hooked thereon.

Reference numeral 20 denotes an air supply pipe for operating the air cylinder 19.

In FIG. 2, 23 is a guide rail of the truck 13, on which the wheels 21 of the middle truck 13 move.

24 is a roller chain that makes reciprocating motion.

Reference numeral 25 denotes a roller-type core-shaped receiver which is attached to the roller chain 24 and is designed to receive the core 3' pulled out from the cored asbestos cement pipe 2.

Reference numeral 26 denotes a sprocket on which the roller chain is attached, and is driven by the forward/reverse motor 22.

Instead of this forward/reverse motor, a full clutch may be used to rotate forward/reverse.

6-Here, when the trolley 13 moves to the solid line position in Fig. 2, the trolley 1
3 should be stopped.

At this time, the tip of the locking tool 16 is inserted deeper than the engagement ring I5 of the core mold 3, and the locking state is established.

Next, when the trolley 13 starts to move backward from the solid line position in the direction of the dotted line position in FIG. The withdrawal is now taking place.

The locking tool 16 is configured to move upward and disengage from the engagement ring 15 just before the truck 13 is completely retreated to the dotted line position. This allows the core mold and the locking tool to separate, but the truck can still move all the way.

When the truck 13 completely returns to the dotted line position, the forward/reverse motor 22 is stopped, and the truck 13 is also stopped.

When the core mold 3 is separated from the locking tool, the air cylinder 27
is activated, the core mold feeding plate 28 moves from the solid line position shown in FIG. 6 to the dotted line position as shown in FIG.

The core type feed plate 28 is then returned to the solid line position shown in FIG. 6 again.

The core feed plate 28 has a concave groove 3 so that the core is fed in an m-effect manner.
0 all set.

31 is a conveyor.

As shown in Fig. 1, a phototube is installed at the end of the conveyor 1 so that the conveyor 1 stops when light is blocked by the asbestos cement tube 2' with a core mold, and the asbestos cement tube 1 that was previously demolded is Asbestos cement pipe 2' with a core mold on the conveyor 1
It is also possible to carry it in and place it on the demolding table by the feeding tool 32, so that demolding can be repeated repeatedly.

Next, the present invention will be explained according to the operation of the amazing device.

As shown in FIG. 2, when the cored asbestos cement pipe 2 is placed on the demolding table 7, the limit switch LSI and limit switch TJS 2 (respectively) remove the asbestos cement of the cored asbestos cement pipe 2. It comes into contact with the outer circumferential surface of the tube portion and the outer circumferential surface of the core portion, respectively, and turns on.

The limit switch LSI continues to be in contact with the outer surface of the asbestos ment tube 8 and remains on until the core mold 3 has been pulled out and the remaining asbestos ment tube 8 is sent to the next process. stand by. On the other hand, when the summit switch LS2 is turned on, the air cylinder 10 is fully operated to lower the movable plate 11, and together with the fixed plate 12, it holds the one end surface portion of the asbestos cement tube 2 with a core and the outer peripheral portion of the asbestos cement tube. With,
The limit switch L S 2 stays on until all the wires in contact with the outer peripheral surface of the core mold 3 are turned on until the withdrawal of the core mold 3 is completed.

Unfortunately, due to the lowering of the moving plate 11, the limit switch J
,' S3 is turned on, and the truck J3 moves forward from the dotted line position shown in FIG. 2 to the solid line position.

As the trolley 13 moves to the solid line position, as shown in FIG. Stop forward movement. At this time, the tip of the locking tool 16 is inserted deep into the engagement ring 15, which is fixedly welded to the end of the inner peripheral surface of the core mold 3.

When the trolley 13 stops, the limit switch LSs attached to the stand is turned on, fully operating the shear cylinder 19, lowering the locking rod I8 from the dotted line position to the solid line position about the fulcrum 17, and the locking tool 16 is also lowered to a state where it can be engaged with the engagement ring 15.

On the other hand, a timer (not shown) activated by turning on the limit switch LS5 causes the truck 3 to start moving backward from the solid line position shown in FIG. 2 toward the dotted line position. In this case, the locking tool 16 of the truck 13 and the engagement ring 15 of the core mold 3 remain engaged, and the truck 13 continues to pull out the core mold 3 while moving backward.

When the trolley 13 passes slightly before it completely retreats to the dotted line position, the protrusion attached to the trolley 13 contacts the limit switches I', S6, and the limit switch LS6 is turned on. Locking rod 1
8 is moved upward. 1+i: The engagement between the locking tool 16 and the engaging ring 15 of the core type is completely released, and the carriage 13 is further moved backward, leaving the entire core type 3 that has been pulled out in place.

When the trolley 13 completely retreats to the dotted line position shown in FIG. Stop! Truck 13 will also stop.

In this case, the pulled-out core mold 3 is completely separated from the tip of the locking tool 16 provided on the carriage 13.

In addition, when the limit switch LS6 is turned on, the air cylinder 27 shown in FIG. (not shown), and the core mold sent to the core return device is sent to the pipe making machine again or sent to the storage device.

Incidentally, the core mold feeding plate 28 returns from the dotted line position to the solid line position by a timer (not shown).

On the other hand, when the withdrawal of the core mold 3 is completed, the suppression of the limit switch LS2 by the core mold is released and the limit switch L
S2 is turned off, the moving plate 11 is raised, and as the moving plate 11 is raised, the limit switch LS3 is also turned off, waiting to receive the next cored asbestos cement pipe.

When the limit switch LS3 is turned off, the air cylinder 5 is actuated by a timer (not shown), and the asbestos cement pipe delivery plate 4 shown in FIG. It is automatically sent to the next column via the cradle 9. When the asbestos cement pipe 8 is sent out, the suppression of the limit switch LSI is released and the limit switch LSI is turned off.The asbestos cement pipe delivery plate is returned to its original position by a timer (not shown).
A system for accepting asbestos cement pipes with core molds will be established.

In the present invention, in order to fix the asbestos cement pipe from the entire outside and prevent it from moving in the axial direction, the outer circumference and end surface of the asbestos cement pipe are entirely held by the fixing plate 12 and the movable plate 11. , the asbestos cement pipe with a core mold is held only on the outer periphery, or the end surface of the asbestos cement pipe with a core mold is held by a fixing plate, or in the present invention, an engagement ring is provided on the inner peripheral surface of the end of the core mold. The tool was fully inserted and engaged, and the core was pulled out. However, if a circular hole or oval-shaped hole larger than the locking hook was made at the end of the core, the locking hook could not be inserted internally or externally. The core mold may be pulled out by engaging with the aforementioned hole. In this case, the positioning of the holes is such that an even number of holes of two or more are provided relative to each other on the circumference of the end of the core mold, and the tube is rotated using a phototube to ensure alignment at the light receiving point. good.

Further, in the present invention, the method of controlling each process is not limited to an electric system using limit switches, timers, etc., but may also be controlled by a pneumatic system or a hydraulic system.

Since the present invention is constructed as described above, the demolding work from a cored cement pipe, which was conventionally performed by a large number of skilled workers, can be performed reliably and quickly without the need for labor. There is.

In addition, when the core mold is pulled out, a strong compressive force is temporarily applied to the end of the cement pipe, but since the outer periphery of the end of the cement pipe is held, the cement pipe is not covered by the cement pipe. The tendency of locally breaking the holding portion is suppressed, and the occurrence of defective products can be prevented.

The present invention includes all cases where a core mold is used as a core and a tubular body as a product is manufactured around the core mold, and in particular, various inorganic pipes similar to cement pipes (
Of course, the target is a cement pipe containing rock wool, sand, etc.).

14-

[Brief explanation of drawings]

FIG. 1 is a diagram showing an apparatus that supplies a core-shaped asbestos-cement pipe to a demolding table and sends the remaining asbestos-cement pipe to the next process after the core has been pulled out. FIG. 2 is a side view of the plaster core mold removing device according to the present invention, showing a state in which demolding is started immediately before the core mold is pulled out in the direction of the dotted arrow. Figure 3 is an enlarged view of the locking tool and its actuating device for removing the core mold from the asbestos cement pipe, Figure 4 is an enlarged side view of the locking tool actuating device, and Figure 5 is FIG. 6 is a plan view of the locking device actuating device, and is a diagram showing a device for feeding the core mold after demolding. 15- Figure 1 5:'. Shi S3. -to, 1)

Claims (1)

[Claims] A demolding table for placing the core mold, and a demolding table for holding the core mold, and a plurality of units that are relatively movable to and from each other, at least one of which is movable, so as to hold the core mold and to prevent the cement pipe from moving in the axial direction. a locking member for locking the core by moving the core in an appropriate position, and a locking member moving device for reciprocating to remove the core from the cement pipe with the core. A device for removing a core mold from a cement pipe with a core mold, comprising an actuating device for the locking device moving device, and characterized in that the core mold is pulled out from the cement pipe with a core mold.