JPH043764Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a device for removing caps from tube ends.

Conventional technology When pipes are manufactured from materials such as cast iron,
It is common to form a mortar lining layer on the inner surface of a pipe, primarily to prevent corrosion. That is, as shown in FIG. 5, the tube 1 is placed horizontally and rotated around the axis.
A mortar lining layer 4 is formed on the inner surface of the tube 1 by charging mortar material 3 from a trough 2 inserted therein. At this time, if the tube end 5 is left open, the mortar material 3 thrown in will jump out of the tube end 5, so this needs to be prevented.

For this reason, conventionally, a cap 7 made of synthetic resin having an inner flange 6 protruding radially inward from the level of the mortar lining layer 4 is press-fitted onto the outer periphery of the pipe end 5. This prevents the material 3 from flying out.

Problems to be Solved by the Invention However, in the past, when removing the cap 7 from the tube end 5 after forming the mortar lining layer 4, the operator hit the cap 7 with a hammer or the like to separate it from the tube 1. The problem is that efficiency is low because the work is done manually.

SUMMARY OF THE INVENTION The object of the present invention is to solve these problems and to enable efficient removal of the cap from the end of the tube.

Means for Solving the Problems In order to solve the above problems, the present invention provides a device for removing a cap press-fitted onto the outer periphery of an end of a horizontally supported pipe from the end of the pipe, which moves up and down. a movable frame movable in the axial direction of the tube on the elevating frame; and a cap removal tool attached to the movable frame, the cap removal tool being attached to the elevating frame. A downward V-shaped cap approaches the outer surface of the tube by a downward movement, and engages the end surface of the tube body side of the cap by moving the movable frame away from the tube, allowing the cap to be extracted from the tube end. It has a structure with claws.

Function According to this configuration, when the moving frame is moved in the direction approaching the pipe with the lifting frame raised, the V-shaped claw will be located on the pipe body side beyond the cap. . Therefore, when the elevating frame is lowered, the claws approach the outer surface of the tube, and the movable frame is then moved in a direction away from the tube. Then, the claw first engages with the end surface of the cap on the tube body side, and then when the movable frame is further moved, an extraction force is applied from the claw to the cap, so that the cap can be removed from the tube end.

Embodiment In FIGS. 8 to 4, 1 is a tube with a cap 7 attached to its end, and is supported horizontally by rollers 11. A plurality of pairs of rollers 11 are arranged in the axial direction of the tube 1 so as to support the lower portions of both sides of the tube 1 and rotate the tube 1 around the axis. Further, the rollers 11 are arranged in four rows in a similar arrangement so that four tubes 1 can be supported side by side at the same time.

12 is a removal device based on the present invention, and one device is installed for each two pipes 1. here 13
is an elevating frame which can be raised and lowered on the bed 15 by a pantograph mechanism 14. Figure 1~
As shown in FIG. 2, a support frame 16 is provided on the lifting frame 13, and a grooved wheel 17 is rotatably supported on the support frame 16. 18 is its shaft.

A movable frame 19 is accommodated within the support frame 16 . This moving frame 19 has rails 20 attached to both sides of its upper and lower surfaces, and these rails 20 are connected to the grooved wheels 17.
It is starting to be supported by This results in
The moving frame 19 is guided by a grooved wheel 17 and is movable in the axial direction of the tube 1. 2
1 is a horizontal cylinder device, its base end 22
is connected to the elevating frame 13, and its telescopic end 23 is connected to the center of the tip 24 of the moving frame 19, so that the moving frame 19
can be driven toward or away from the tube 1.

A pair of cap removal tools 2 are provided at the distal end 24 of the moving frame 19 at positions corresponding to the two tubes 1.
5 is provided, each cap removal tool 25
is structured as follows. That is, a support bracket 26 is attached to the front surface of the distal end 24 of the movable frame 19, and the support bracket 26 has a support bracket 26 that can swing slightly in a vertical plane in the axial direction of the tube 1 about a horizontal axis 27. A swing bracket 28 is attached. A bar 29 extending in the axial direction of the tube 1 is attached to the swing bracket 28, and the length of the bar 29 protruding from the swing bracket 28 can be adjusted by adjusting a nut 30.

A hook 31 is attached to the tip of the bar 29. This hook 31 includes a claw 32 formed in a downward V-shape, a sleeve 33 that is externally fitted onto the bar 29, and one end attached to the sleeve 33 and arranged in a downward V-shape along the claw 32. A pair of plates 34 are provided. The lower surface 35 of this plate 34 is arranged slightly above the lower edge 36 of the claw 32.

Next, the operation for removing the cap 7 will be explained in detail. First, the pipe 1 on which the mortar lining layer has been formed is transported by a crane or other suitable transport device.
is carried onto the roller 11 and rotated around the axis. Next, the lifting frame 13 is raised by the pantograph mechanism 14, and the claw 3 of the cap removal tool 25 is removed.
2 is located above tube 1. Subsequently, the movable frame 19 is moved in a direction approaching the tube 1, and the claw 32 is positioned on the tube body side beyond the cap 7.

When the elevating frame 13 is lowered in this state,
Since the claw 32 approaches the outer surface of the tube 1, by moving the movable frame 19 in a direction away from the tube 1, the claw 32 engages with the end surface 37 of the cap 7 on the tube body side. At this time, if the plate 34 comes into contact with the outer surface of the cap 7, the claw 32 is regulated at a predetermined position. In addition, the swing bracket 28 is connected to the horizontal axis 27.
Because it can swing freely around the circumference, even if the axial center height of the tube 1 and the height of the lifting frame 13 are not aligned, the claw 3
2 can be reliably multiplied by cap 7. Furthermore, if the length of the tube 1 changes, this can be accommodated by adjusting the nut 30 to change the amount of protrusion of the bar 29 from the swing bracket 28.

Thereafter, when the moving frame 19 is further moved in the direction away from the tube 1 while rotating the tube 1, the extraction force is transmitted from the claw 32 to the cap 7,
This cap 7 is removed from the tube 1.

After removing cap 7, remove roller 1.
The upper tube 1 is carried out, the next cap-equipped tube 1 is carried onto the roller 11, and the same operation is performed. At this time, since the claw 32 is formed in a downward V-shape, even if the diameter of the tube 1 changes as shown in FIG. can be reliably multiplied by cap 7. In addition, each removal device 12
This allows the caps 7 for two tubes 1 to be removed at the same time.

Effects of the invention As described above, according to the invention, it is possible to remove the cap from the end of the tube efficiently and easily.

[Brief explanation of the drawing]

Fig. 1 is a front view of essential parts of an embodiment of the present invention, Fig. 2 is a right side view thereof, Fig. 3 is an overall side view thereof,
FIG. 4 is an overall front view thereof, and FIG. 5 is a sectional view showing a state in which a conventional cap is attached to a tube end. 1...Pipe, 7...Cap, 13...Elevating frame, 19...Moving frame, 25...Cap removal tool, 32...Claw.

Claims (1)

[Claims for Utility Model Registration] A device for removing a cap press-fitted onto the outer periphery of an end of a pipe supported in the horizontal direction from the end of the pipe, comprising an elevating frame that can be raised and lowered vertically, and the elevating frame. a moving frame movable in the axial direction of the tube at the top, and a cap removal tool attached to the moving frame, the cap removal tool approaching the outer surface of the tube by the downward movement of the elevating frame. The tube also has a downward V-shaped claw that engages the end surface of the tube body side of the cap and can extract the cap from the tube end when the movable frame moves in a direction away from the tube. Cap removal device from the end.