JP2776800B2 - Perforator for pipe wall - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outer peripheral surface of a fluid transport pipe.
In the attached sealed case, the circumference of the fluid transport pipe is
A hole saw that cuts and forms a connection port on the wall, and its rotation axis
The present invention relates to a device for piercing a peripheral wall of a pipe, which is movably provided along a core direction .

[0002]

2. Description of the Related Art In a conventional pipe peripheral wall drilling device, a hole saw is used.
The connecting shaft is set at a position
In the annular groove formed at the end of the connecting shaft,
Project radially outward from the outer peripheral surface of the
Elastically reduced in diameter but to a state which becomes smaller than the outer diameter of the connecting shaft
Attach a deformable connecting ring, and
Of the inner surface of the case
Opposed parts are cut from the pipe peripheral wall of the fluid transport pipe.
Hold the separated cut piece with the cylindrical body of the hole saw.
The collection member that can be held is detachably arranged, and this collection part
In the position corresponding to the rotation axis of the material, cutting with the hole saw
Sometimes, the cylindrical guide tube in which the connecting shaft fits is fixed in a penetrating state
Further, the length of the connection shaft, the end of the connection shaft at the end of cutting,
The connecting ring attached to the annular groove is placed under the collecting member.
(See, for example, Japanese Utility Model
No. 36196). And of the hole saw
As the feed is moved in the direction of the rotation axis, the hole saw
When the connecting shaft of the connecting shaft fits inside the guide tube of the collection member,
The connecting ring attached to the annular groove is elastically reduced in diameter.
At the end of cutting, the end of the connecting shaft is
When the connecting ring moves through to the lower surface side of the
Elastic deformation due to elastic restoring force toward the enlarged diameter side, connecting shaft and recovery member
And the stopper are connected.

[0003]

According to the above prior art, the connecting ring mounted on the annular groove of the connecting shaft is guided.
After it has been inserted into the cylinder,
Then, the connecting ring is attached to the peripheral surface of the guide cylinder by its elastic restoring force.
The hole saw is fed because it slides while being pressed.
Load increases, resulting in a hole saw
Is performed by an actuator such as a motor,
The whole system is easy to increase in size and weight. In particular, the transmission of hole saws
When cutting and rotating are performed with a common drive shaft,
Drive load increases, so the drive system becomes larger and heavier.
Easy to promote. The present invention has been made in view of the above-described circumstances, and ensures that a hole saw and a collection member can be securely connected at the end of cutting.
Load of the hole saw during cutting while connected to
And reduce the size and weight of the drive train.
It is an object of the present invention to provide a drilling device for a pipe peripheral wall .

[0004]

According to a first aspect of the characterizing feature of the present invention for achieving the above object, Ri taken on the outer circumferential surface of the fluid transport pipe
In the sealed case attached to the peripheral wall of the fluid transport pipe
Insert the hole saw that cuts the connection port into the center of the rotating shaft.
A perforation device for a pipe peripheral wall provided movably along
Thus, of the inner surface of the sealed case,
Cutting from the surrounding wall of the pipe at the parts facing each other in the direction of the rotation axis
The separated cut piece is combined with the cylindrical body of the hole saw.
A collection member that can be held between is detachably arranged
At the same time, the hole saw and the recovery member face each other.
The part is in a disengaged state until the end of cutting, and the cutting
When the hole saw is moved in after the
And an engagement means for engaging and connecting the member and the collection member.
It is in the point.

[0005] A second characteristic configuration of the present invention is the cylindrical bobbin.
A through hole for disengaging the engaging means;
Is formed.

[0006] A third characteristic configuration of the present invention is the hall saw.
-And the member for collection oppose each other in the axis direction of the rotation axis,
The hole saw and the collecting member are engaged by the engaging means.
When combined, further transfer of the hole saw
Movement restriction means for preventing movement
You.

[0007]

In the case of the pipe peripheral wall perforating device according to claim 1,
Disengaged by feeding movement of hole saw after cutting is completed
The engaging means in the state is engaged and the hole saw and the collecting portion
Since the material is engaged and connected, the engagement by the engaging means is cut
Can not act as a feed load for the hole saw at the time.
No.

[0008] The field by the perforation device for the peripheral wall of the pipe according to claim 2.
The hole saw removed from the sealed case after cutting
The connection between the printer and the recovery member is released, and the
When removing the held pieces, the collecting member is
Even when placed on the ground etc.
Engaging means through a through hole formed in a cylindrical body
Can be disengaged.
It is only necessary to lift and remove only the saw .

[0009] The field by the perforation device for a pipe peripheral wall according to claim 3.
When the cutting operation is completed,
The contact can be reliably prevented at the position where the step is engaged.
You.

[0010]

[Effect of the Invention] In puncture hole apparatus of the tube wall of the first aspect,
After cutting is completed, securely connect the hole saw and the recovery member.
While reducing the feed load of the hole saw before cutting.
The drive system can be made smaller than conventional drilling machines.
Can be achieved.

According to a second aspect of the present invention, there is provided a drilling device for a pipe peripheral wall.
Hole saw removed from sealed case after grinding work
The cut pieces held between the and the recovery member
In the case where the hole saw is
Place it on the ground in a flat horizontal position and
Remove the connecting ring from the annular groove of the connecting shaft
After removal, the hole saw and the recovery member are
Removal of cut pieces compared to moving in a horizontal direction
Can be performed efficiently and easily. Moreover, this engagement
The presence of a through hole for release operation makes the hole saw itself lighter.
Quantification can be achieved at the same time.

According to the third aspect of the present invention, there is provided an apparatus for piercing a peripheral wall of a pipe.
Tool is fed and moved more than necessary after cutting
Due to poor engagement of the engagement means or
Damage due to cutting of materials and collection members
Wear.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 4, an embodiment of the present invention is constructed by fixing a connection case 1, which is a sealed case, on the outer peripheral surface of a fluid (tap water) transport pipe A with a packing P interposed therebetween. While forming the cylindrical closed space C along the up-down direction,
A branch port 2 as a connection port for connecting the inside of the fluid transport pipe A to the closed space C is formed in the peripheral wall of the fluid transport pipe A from the closed space C side, and another fluid (tap water) is connected to the connection case 1. )
A connecting pipe D is provided for connecting the end of the transport pipe B to the closed space C, and the two fluid transport pipes A and B are connected to each other in an uninterrupted water state (while maintaining the flow of water). The plumbing method will be described. As shown in FIGS. 1 and 5, the punching device for forming the branch port 2 is configured such that a cylindrical work case 3 communicating with the closed space C is flange-connected to the upper end of the connection case 1, and the work case 3 is connected to the work case 3. And a hole saw 5 which is supported on the drive rotary shaft 4 in a cantilevered posture. The working case 3 is configured by detachably connecting a first cylindrical case 3A having a gate valve 6 and a second cylindrical case 3B capable of accommodating the hole saw 5 by a flange, and one end of the first cylindrical case 3A. The side is detachably flange-connected to the connection case 1 and the second cylindrical case 3
A lid plate 3C is detachably flange-connected to one end of B,
The drive rotary shaft 4 of the hole saw 5 is penetrated through the cover plate 3C so as to be slidable vertically in a watertight state.
The drive rotary shaft 4 has a hole saw 5 connected to an end of the drive rotary shaft 4 via a holder 10 in a non-rotating state.
When the working case 3 is connected to the connection case 1 , the drive rotation shaft 4 rotates in a direction perpendicular to the pipe axis X of the fluid transport pipe A and does not intersect with the pipe axis X. The driving rotary shaft 4 is rotatably supported about the axis Y, and is driven by the second motor M2 while rotating clockwise in plan view by driving the first motor M1 fixed to the cover plate 3C side. By sliding the rotating shaft 4 downward along the rotating shaft center Y, the hole saw 5 located in the second cylindrical case 3B is rotated and connected through the connecting portion between the working case 3 and the connecting case 1. It is configured to be inserted and moved into the case 1 , that is, to be fed in, and to form a branch port 2 by cutting a peripheral wall of one side of the fluid transport pipe A located on the feed moving path. The hole saw 5 is configured such that four cutting tips 7 are fixed to an end face of a cylindrical body 8, and the cylindrical body 8 fits into a cutting groove 9 formed in a pipe peripheral wall by rotation of the hole saw 5. As a result, the run-out of the rotation axis Y of the drive rotation shaft 4 is restricted, and at least two or more pieces are cut in the cutting process from the start of the cutting operation until the cylindrical body 8 is fitted into the cutting groove 9. As shown in FIG. 2, the cutting tips 7 are arranged and fixed at a 90 ° phase angle so that the cutting tips 7 do not simultaneously cut the cutting grooves 9. The holder 10 is provided with a cylindrical shaft member 12 screwed and fixed to the top plate 11 of the cylindrical body 8 and a fixed shaft 13 for connecting and fixing the cylindrical shaft member 12 and the driving rotary shaft 4. The end of the fixed shaft 13 inserted into the member 12 is screwed to the drive rotary shaft 4, and the cylindrical shaft member 12 screwed to the top plate 11 is sandwiched between the flange 14 formed on the fixed shaft 13 and the drive rotary shaft 4. By attaching the hole saw 5 to the drive rotary shaft 4 in a detachable manner, the drive rotary shaft 4 and the hole saw 5 rotate by engaging the opposing surfaces of the cylindrical shaft member 12 and the drive rotary shaft 4 with each other. They are connected in a stopped state. At the lower end of the fixed shaft 13, a connecting shaft 16 forming a cylindrical shaft portion 15 is extended, and as shown in FIG.
After completion of the drilling operation, by moving infeed further down direction together with the connecting shaft 16 to a hole saw 5, collecting member is placed detachably in advance on the inner bottom surface of the connection case 1 17
And the cylindrical shaft portion 15 are engaged and connected, and the cut piece 18 of the pipe peripheral wall cut and separated along with the formation of the branch port 2 is confined in the inner peripheral surface side of the cylindrical body 8, and the cylindrical body 8 and the collecting body are collected.
The cutting piece 18 is collected together with the hole saw 5 in the second cylindrical case 3B of the work case 3 by holding the member 17 with the member 17 and moving the drive rotary shaft 4 upward. The collecting member 17 is formed by projecting an engaging shaft member 20 at the center of a circular plate 19 having a diameter slightly smaller than the outer diameter of the cylindrical body 8, and is biased to protrude toward the rotation axis Y. The engaging pin 21 is provided on the cylindrical shaft portion 15, and when the connecting shaft 16 is moved downward, the cylindrical shaft portion 15 is externally fitted to the distal end portion of the engaging shaft member 20. transmural that engages the circumferential groove 22 of the made coaxial member 20, together with the connecting shaft 16 and the engagement shaft member 20 is engaged connected, it is formed into a cylindrical shape body 8
By pulling against the biasing force of the engagement pin 21 through the through holes 23, are configured to engage the connection between the connecting shaft 16 and the engagement shaft member 20 is released. That is, the engagement shaft
The peripheral groove 22 of the member 20 and the engaging pin 21 are used to finish the cutting.
When the hole saw 5 is moved downward after the
Means for engaging and connecting the tool 5 and the collecting member 17
Is configured. In addition, the said engagement means until the end of cutting.
Is in a disengaged state. In addition , the collection member 17 is restricted from moving in the radial direction by the contact between the peripheral surface of the disk 19 placed on the inner bottom surface of the connection case 1 and the inner surface of the connection case 1, connecting shaft 16 the tip of the cylindrical shaft portion 15, the tip side inner circumferential surface be formed in a shape extending in a trumpet shape, with the feed downward movement direction of the hole saw 5, the engaging shaft of the cylindrical shaft portion 15 It is configured so that it can be externally fitted to the member 20 reliably. Further, the hole saw 5
Opposing each other in the direction of the rotation axis Y of the member 17 and the collecting member 17
Position, more specifically, the end surface of the connecting shaft 16 and the rotation of the end surface.
Formed on the stepped portion of the engaging shaft member 20 facing each other in the rotation axis Y direction
Hole saw by the engaging means.
When the member 5 and the collection member 17 are engaged and connected,
Movement restriction to prevent contact of feed movement of hole saw 5
Means are configured.

Next, a description will be given of an operation procedure for branch-connecting another fluid transport pipe B to the fluid transport pipe A in a water-free state. As shown in FIG. 5, the connection case 1 on which the collection member 17 is mounted on the inner bottom surface is attached to the fluid transport pipe A, and the connection case 1 is different from the work case 3 in which the hole saw 5 is provided. Connect to fluid transport pipe B. As shown in FIGS. 1, 3, and 6, the hole saw 5 is inserted and moved into the connection case 1 while rotating, the peripheral wall of the fluid transport pipe A is cut, and the cutting waste is put into the connection case 1 together with tap water. The branch port 2 is formed while discharging from the drain hole 24 provided. In this cutting step, the rotation of the hole saw 5 causes the cylindrical body 8 of the hole saw 5 to fit into the cutting groove 9 formed in the peripheral wall of the pipe, thereby restricting the runout of the rotation axis Y of the drive rotation shaft 4. As shown in FIG. 1, in the cutting step from the start of cutting by the hole saw 5 to at least the fitting of the cylindrical body 8 into the cutting groove 9, in a state where two or more cutting tips 7 do not simultaneously perform cutting, The cutting groove 9 is cut. 3, the engagement, as shown in FIG. 7, the the hole saw 5 further lowered moves the hole saw 5 and collecting member 17
Engagement means by means of cutting means 18 into the saw 5
, The hole saw 5 is moved upward into the second cylindrical case 3B, and then the gate valve 6 is closed. The cover 3C and the hole saw 5 together with the second cylindrical case 3
B, a cover 25 for closing the connection port of the connection case 1 is attached to the drive rotary shaft 4 in place of the hole saw 5 holding the cut piece 18 as shown in FIG. After re-fixing to the cylindrical case 3B, the gate valve 6 is opened,
The drive rotary shaft 4 is moved downward to insert the cover 25 into the connection port of the connection case 1, and the cover 25 is temporarily fixed to the connection case 1 with the temporary fixing bolt 26 so that the cover 25 does not come out of the connection port due to the pressure in the connection case 1. . After releasing the connection between the drive rotary shaft 4 and the lid 25 and removing the work case 3 from the connection case 1, the lid 25 is fixed to the connection case 1 by a ring 27 as shown in FIG. Close 24.

[Other Embodiments] Pipe peripheral wall according to the present inventionPiercingThe hole device is a pipe through which water flows
On the pipe wallConnectionNot only when forming any liquid
On the peripheral wall of the pipe through which the body or gas flowsConnectionPlace to form
It can be implemented in any case. Pipe wall according to the inventionPiercingThe perforation device is
In the state of maintaining body circulation)ConnectionThe shape
Not only when the fluid flow is stopped,
On the surrounding wallConnectionCan also be used to form  Pipe wall according to the inventionPiercingThe hole device has a cylindrical body
Hole saw with only one cutting tip on the end face
May be used to form a through-hole in the peripheral wall of the pipe.
No.  Pipe wall according to the inventionPiercingHole equipment tube hole saw
Rotates around the axis of rotation in a direction that intersects the axis at an acute angle
Let itConnectionMay form
No.  Pipe wall according to the inventionPiercingThe hole device is used for cutting holes
The feed of the saw may be performed manually.

[0016]

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a cutting process before a cylindrical body is fitted into a cutting groove.

FIG. 2 is a front view showing an end face of the hole saw.

FIG. 3 is a longitudinal sectional view showing a process of collecting cut pieces.

FIG. 4 is a schematic sectional view showing a pipe connection state.

FIG. 5 is a longitudinal sectional view showing a schematic process of a pipe connection operation.

FIG. 6 is a longitudinal sectional view showing a schematic process of a pipe connection operation.

FIG. 7 is a longitudinal sectional view showing a schematic process of a pipe connection operation.

FIG. 8 is a longitudinal sectional view showing a schematic process of a pipe connection operation.

FIG. 9 is a longitudinal sectional view showing a schematic process of a pipe connection operation.

[Description of Signs ] 1 Sealed case (connection case) 2 Connection port (branch port) 5 Hole saw 8 Cylindrical body 17 Collection member 18 Cutting piece 23 Through hole A Fluid transport pipe Y Rotation axis

Claims (3)

(57) [Claims] In a sealed case attached to an outer peripheral surface of a fluid transport pipe, a hole saw for cutting and forming a connection port on a pipe peripheral wall of the fluid transport pipe is movably provided along a rotation axis direction of the hole saw. A peripheral device for drilling a peripheral wall of a pipe, wherein, on the inner surface of the sealed case, a portion cut away from the peripheral wall of the pipe is cut into a cylindrical shape of the hole saw at a portion opposed to the hole saw in a rotational axis direction. A collection member that can be held between the body and the collection member is detachably disposed, and the opposing portions of the hole saw and the collection member are in a disengaged state until the end of cutting, and the cutting is performed. A perforating device for a pipe peripheral wall provided with an engagement means for engaging and connecting the hole saw and the collecting member by the feeding movement of the hole saw after the end. 2. A perforation device for a pipe peripheral wall according to claim 1, wherein a through hole is formed in said cylindrical body for disengaging said engaging means. 3. When the hole saw and the collecting member are engaged and connected to each other at a position where the hole saw and the collecting member are opposed to each other in the rotational axis direction by the engaging means, 3. A perforation device for a pipe peripheral wall according to claim 1, further comprising a movement restricting means for preventing contact with the feeding movement.