JPH0739805A - Sand attaching device - Google Patents

Abstract

(57) [Summary] [Object] To provide an apparatus capable of efficiently attaching sand to the outer peripheral surface of a synthetic resin tube while rotating the tube. [Structure] A shooter 4 is continuously provided below a tank 3 that stores sand, and a tube body holding device 5 that holds a synthetic resin tube P below the shooter 4 and rotates it about an axis is provided. Then, below the tubular body holding device 5, a receiving tray 6 for receiving the excess sand dropped from the shooter 4 is arranged. [Effect] Sand can be efficiently attached to the outer peripheral surface of the synthetic resin tube.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for impregnating sand on the outer peripheral surface of a synthetic resin tube.

[0002]

2. Description of the Related Art Conventionally, when a synthetic resin pipe is connected to a concrete manhole, a connection hole is formed in a side wall of the manhole, and then an end portion of the synthetic resin pipe is inserted into the connection hole. Cement milk is filled between and and the outer peripheral surface of the synthetic resin pipe. At the time of this connection, in order to improve the adhesiveness between the cement milk and the synthetic resin pipe body, a synthetic resin pipe body in which sand is attached to the outer peripheral surface of the pipe is used.

[0003]

By the way, when sand is attached to the outer peripheral surface of a synthetic resin tube, conventionally, an adhesive is applied to the outer peripheral surface of the tube, and then the tube is manually rotated around the axis. Since it was sprinkled with sand and adhered, there was a problem that the work was inefficient. For this reason, it has been desired among the plumbing contractors of this type to develop a device that can easily and efficiently attach sand to the outer peripheral surface of the synthetic resin pipe body.

The present invention provides a sand impregnating device that meets the above-mentioned demand, and provides a device capable of efficiently impregnating sand on the outer peripheral surface of a synthetic resin tube while rotating it.

[0005]

DISCLOSURE OF THE INVENTION The present invention provides a tubular body holding device in which a shooter is connected to the lower portion of a tank for storing sand, and a synthetic resin tubular body is held below the shooter to rotate around a shaft center. To provide. Further, a receiving plate for receiving the excess sand dropped from the shooter is arranged below the tube holding device.

[0006]

With the above construction, the adhesive can be evenly applied to the outer peripheral surface of the pipe while rotating the synthetic resin pipe held by the pipe holding device around the axis. Further, when sand is dropped from the shooter while rotating the synthetic resin pipe body, the sand is evenly attached to the outer peripheral surface of the pipe coated with the adhesive, and the surplus sand is dropped to the saucer.

[0007]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a partially cut front view of an apparatus showing an embodiment of the present invention, and FIG. 2 is a partially cut side view of the apparatus.
Reference numeral b is a frame body, 2 is an autoloader, 3 is a tank for storing dry sand, 4 is a shooter, 5 is a tubular body holding device, and 6 is a saucer.

The tank 3 is fixed to the upper portion of the frame 1a, and the autoloader 2 is provided on the upper portion of the tank 3. On the other hand, a shooter 4 is continuously provided below the tank 3, and a damper (not shown) that opens and closes by an automatic or manual operation is provided at an outlet 41 of the shooter 4. Further, a vibrator 42 is provided on the lower surface of the shooter 4, and the sand stored in the tank 3 is smoothly discharged from the outlet 41 without clogging in the shooter 4 due to the vibration of the vibrator 42. There is.
The inclination angle θ of the shooter 4 is preferably set to 15 to 20 °.

Below the outlet 41 of the shooter 4, a tube holding device 5 is provided. The tube holding device 5 is the shaft rod 5
A shaft holder 51 is rotatably supported on the frame body 1b by means of 1, and a pipe holder 52 is provided on one end side of the shaft rod 51. The pipe holder 52 comprises a pair of members 52a and 52b. The pair of members 52a and 52b are expanded and contracted in the radial direction by the operation of a hydraulic cylinder or the like so that the synthetic resin pipe P can be held from the inside. Has become. A sprocket 53 is fixed to the other end of the shaft rod 51, and the sprocket 53 is connected to a sprocket 54 fixed to the shaft core of the motor M via a chain or the like.

A cover body 7 is provided below the tubular body holding device 5 to prevent the adhesive from dripping, and a receiving tray 6 for receiving the excess sand dropped from the shooter 4 is provided below the cover body 7. Is provided. The cover body 7 can be moved forward and backward by the operation of the cylinder 71. That is, the cover body 7 connected to the crank device 72 can be retracted from the position shown by the solid line in FIG. 2 to the position shown by the broken line by the operation of the cylinder 71.
On the other hand, the bottom surface of the tray 6 is formed in a V shape, and one end portion of the pipe connected to the autoloader 2 is connected to the inclined lower position of the valley portion. Further, one end of a pipe connected to the blower 8 is connected to the upper portion of the autoloader 2.

The sand impregnating apparatus of the present invention has the above-mentioned structure. Next, the procedure for impregnating the outer peripheral surface of the synthetic resin pipe P of vinyl chloride resin or the like with sand using this apparatus will be described. First, the synthetic resin pipe body P is externally inserted and held in the pipe holding body 52 of the pipe body holding device 5. Therefore, the motor M is activated to rotate the synthetic resin pipe P about the axis, and the adhesive is evenly applied to the outer peripheral surface of the pipe by using an appropriate adhesive application device such as a brush. At this time, the cover body 7 is advanced in advance so that the adhesive applied to the outer peripheral surface of the pipe does not drip onto the tray 6.

Next, the cover body 7 is retracted, and the sand is dropped from the shooter 4 so that the sand is evenly attached to the outer peripheral surface of the pipe coated with the adhesive. During this sand attachment operation, excess sand drops and accumulates on the tray 6. Then blower 8
When the inside of the autoloader 2 is vacuum-sucked by operating, the sand accumulated on the bottom of the tray 6 is sucked and transported to the autoloader 2 through the pipe and falls into the tank 3.

[0013]

As described in detail above, in the sand impregnating apparatus of the present invention, a shooter is continuously provided under the tank for storing sand, and a synthetic resin pipe body is held below the shooter to surround the shaft center. Since the tubular body holding device for rotating is provided, it is possible to uniformly apply the adhesive to the outer peripheral surface of the tubular body while rotating the synthetic resin tubular body around the axis. After the application of the adhesive, the synthetic resin tube can be rotated around the axis to drop the sand from the shooter so that the sand is evenly attached to the outer peripheral surface of the tube to which the adhesive is applied.

[Brief description of drawings]

FIG. 1 is a partially cut front view of an apparatus showing an embodiment of the present invention.

2 is a partially cutaway side view of the device shown in FIG.

[Explanation of symbols]

 1a, 1b Frame 2 Autoloader 3 Tank 4 Shooter 5 Tubular holder 6 Saucepan P Synthetic resin tubular

Claims (1)

[Claims] 1. A chute (4) is continuously provided below a tank (3) for storing sand, and a synthetic resin pipe (P) is held below the chute (4) and rotated about an axis. A sand holding device (5) is provided, and a saucer (6) for receiving the excess sand dropped from the shooter (4) is arranged below the pipe holding device (5). Attaching device.