KR20050010079A - A punching machinery for pipe's branch hole - Google Patents

Abstract

PURPOSE: A branch hole punching machine of a pipe is provided to improve production efficiency in manufacturing a T-shaped pipe by forming the constant number of branch holes on a plurality of pipes by one operation. CONSTITUTION: A branch hole punching machine(100) of a pipe is composed of a pipe fixing unit(1) comprising a plurality of clamps gripping the pipe and a clamp housing(9) fastened and installed with the clamp and perforated with a ball screw inserting hole having threads; a pipe moving unit(2) having a ball screw(12) combined and rotated in the ball screw inserting hole and a servo motor(13) for moving the clamp housing by rotating the ball screw; and a pipe boring unit(3) for operating a slide push bar(16) making a branch hole by pushing a punching tip.

Description

A punching machinery for pipe's branch hole}

The present invention relates to a branch hole drilling machine of a pipe for drilling a branch hole in the pipe from the inside, and more particularly, a pipe fixing part in which a plurality of pipes are fixed, a pipe moving part for intermittently moving while controlling the position of the pipe, and a pipe. By providing a punching device consisting of a pipe punching unit for drilling branch holes from inside the pipe at regular intervals in the pipe, a number of branch holes are drilled in a plurality of pipes in a single operation so that productivity can be increased when manufacturing T-type pipes. It relates to a punching machine.

In general, the manufacturing of the T-shaped pipe is formed by forming a branching hole by drilling or pressing a branching hole from the outside of the pipe, and inserting the branching pipe into the branching hole or by using a separate connection T-shaped pipe for each connection part. This is done by inserting a pipe into the weld.

However, forming a branch hole by drilling or pressing work outside of the pipe as described above took a long time as the worker had to adjust the position of the branch hole and then drill or press work, and the separate connection T In the case of manufacturing a T-shaped pipe by using a pipe, there is a problem of an increase in the cost of purchasing or manufacturing a T-pipe for connection, and three parts to be welded, resulting in a long working time and a decrease in productivity. Occurred.

An object of the present invention is to solve the above problems, the pipe fixing portion is fixed to a plurality of pipes, the pipe moving part for intermittently moving while controlling the position of the pipe, and the hole in the pipe at regular intervals from the inside of the pipe By providing a drilling device consisting of a pipe drilling unit to make a number of branch holes in a plurality of pipes in a single operation to provide a branch drilling machine of a pipe to increase the productivity in the production of T-type pipe.

1 is a plan view of the present invention

2 is a side view of the present invention

Figure 3 is a front perspective view of the front end of the present invention

Figure 4 is a rear plan view of the present invention

5 is a cross-sectional view showing a coupling configuration of the clamp and the pneumatic cylinder

Figure 6 is a cross-sectional view showing a branch hole in the pipe by the movement of the slide push bar

Figure 7 is a detailed view of the perforation and slide push bar

Figure 8 is a cross-sectional view showing the action of the perforated end is inserted into the pipe branch holes

9 is an exemplary view in which a branch end is welded to a pipe

<Description of the symbols for the main parts of the drawings>

1: pipe fixing part 2: pipe moving part 3: pipe drilling part

4: Workbench 5: Workbench support part 6: Clamp

7: Upper clamp 8: Lower clamp 9: Clamp housing

10 clamp holder 11 clamp cover 12 ball screw

13: Servo motor 14: drilling stage 15: mandrel bar

16: Slide push bar 17: Punching bar 18: Operation cylinder

19: Pneumatic cylinder 20: Shear fastener 21: Rear end fastener

22: moving fixture 23: punching tip 24: guide groove

25: slide pusher 26: guide rail 27: nut

28: time belt 29: pipe 30: branch pipe

31: branch hole 32: guide bar 33: cylinder rod

34: cylinder rod fixing hole 35: guide bar insertion hole 36: ball screw insertion hole

37: groove 38: bur 100: drilling machine

Hereinafter, the configuration and operation of the present invention will be described in detail with reference to the accompanying drawings.

The pipe perforation drilling machine of the present invention includes a clamp housing 9 in which a plurality of clamps 6 for holding the pipe 29 and the ball screw insertion holes 36 in which the clamps 6 are fixed and installed are threaded. Pipe fixing part (1) consisting of; A pipe moving part (2) consisting of a ball screw (12) fastened to the ball screw insertion hole (36) and a servo motor (13) for moving the clamp housing (9) by rotating the ball screw (12); ; Consists of a pipe perforation (3) to operate the slide push bar 16 for punching the branching hole 31 by pushing the punching tip (23).

The clamp 6 is detachably fastened to the pneumatic cylinder 19 installed in the clamp housing 9 to press the pipe 29.

In addition, the clamp housing 9 is formed with a guide bar insertion hole 35 is inserted into the guide bar 32 fixed to the worktable 4 is guided.

The pipe drilling portion (3) is the slide push bar 16 is fastened to one end of the eccentrically axially punched bar 17, the operation cylinder 18 is installed at the other end to force the lever principle.

The working cylinder 18 is operated pneumatically or hydraulically.

Here, the slide push bar 16 is inserted into the tubular mandrel bar 15 having the perforated end 14 installed at the end thereof, and pushes the punching tip 23 installed at the perforated end 14 to open the branch hole 29. Perforated.

The punching device 100 of the present invention drills a branch hole 31 for communicating the branch pipe 30 to the pipe 29 from the inside of the pipe 29 to the outside thereof, and the plurality of pipes 29 simultaneously While intermittently moving on the worktable 4, a predetermined number of branch holes 31 are to be drilled from the inside of the pipe 29.

That is, a plurality of pipes 29 are fixed to the clamp 6 and then inserted into the outer circumferential surface of the mandrel bar 15 fixed to the worktable 4 to intermittently move horizontally, each time the pipe 29 is stopped for a while. The punching bar 17 connected to the operation cylinder 18 pushes the slide push bar 16 to raise the punching tip 23 inserted into the drilling end 14 of the mandrel bar 15 so that the branch hole 31 is drilled. will be.

Accordingly, because a certain number of branch holes 31 are drilled in a plurality of pipes 29 in one operation, the branching work 31 is reduced in drilling time and the branch pipes 30 are connected to the branch holes 31 and then joined. Production efficiency of the T-type pipe 29 to be produced is increased.

As described above, the drilling device 100 of the present invention, which drills the branch hole 31 from the inside of the pipe 29, includes a pipe fixing part 1 for fixing a plurality of pipes 29 to the work table 4, and a pipe ( 29 is composed of a pipe moving part 2 for intermittently horizontally moving the work piece 4 on the work table 4 and a pipe drilling part 3 for drilling the branch hole 31 from the inside of the pipe 29.

The pipe fixing part 1 has a plurality of clamps 6 into which the pipes 29 are inserted as shown in FIG. 3, and the clamps 6 are clamped and mounted so that the pipes 29 are firmly fixed to the clamps 6. It consists of a clamp housing (9).

The clamp 6 is separated up and down. The upper end of the clamp 7 is fastened to the cylinder rod 33 of the pneumatic cylinder 19 fixed to the clamp housing 9 as shown in FIGS. 5 and 6. The distance between the upper and lower spaces of the clamp 6 is adjusted according to the size of the pipe 29 in the shanghai-dong of 33.

Then, when the pipe 29 is inserted into the clamp 6, the clearance gap is adjusted, the pneumatic cylinder 19 is operated to push the cylinder rod 33 down and the pipe 29 is tightly clamped up and down the clamp 6 This allows the pipe 29 to be firmly fixed to the clamp 6.

Here, the cylinder rod 33 is inserted into the cylinder rod fixing hole 34 drilled by the female screw type of the clamp upper end 7 with the lower part being screw type, and fastened with the clamp upper end 7 to clamp the nut 27. Tighten the upper end 7 so that the clamp upper end 7 is firmly fixed to the cylinder rod 33.

The clamp housing 9 includes a clamp holder 10 having a space in which the clamp 6 is mounted at a predetermined interval as shown in FIG. 3, and a plurality of pneumatic cylinders 19 for holding the clamp 6 fixed thereto. (11), the clamp 6 is mounted on the clamp holder 10, the clamp 6 is pressed by the pneumatic cylinder 19, and the pipe 29 inserted into the clamp 6 is firmly fixed. do.

Here, the clamp holder 10 is a guide bar insertion hole 35 and the ball screw insertion hole 36 of the inner circumferential surface of the female screw type is drilled at each side end, respectively, the guide bar 32 and the ball screw 12, respectively. Is inserted into the outer peripheral surface of the

Accordingly, when the ball screw 12 is rotated, the clamp housing 9 is horizontally moved in the longitudinal direction of the work bench 4 while being guided by the guide bar 32, and thus the pipe 29 inserted into the clamp 6. ) Will also be moved.

In addition, the pneumatic cylinder 19 installed on the clamp cover 11, the cylinder rod 33 is fastened to the clamp upper end 7 by the bolt coupling can be easily detached or replaced as necessary.

In the embodiment of the present invention, three clamps 6 are fixedly installed in the clamp housing 9, but the clamps 6 may be fixedly installed by forming a space as many as necessary.

The pipe moving part 2 includes a ball screw 12 having a clamp housing 9 fastened to an outer circumferential surface thereof, and a servo motor 13 for rotating the ball screw 12.

The ball screw 12 is fixed to the bearing to be rotated on both ends of the worktable (4) in the longitudinal direction, and is rotated while the rotation speed and the rotation direction is controlled by the servo motor (13).

Here, the ball screw 12 is moved to the clamp housing 9 is fastened to the outer peripheral surface formed with a screw thread, as shown in Figure 3, the rotational speed and rotation direction of the ball screw 12 and the moving distance of the clamp housing 9 Since the movement directions are proportional to each other, the clamp housing 9 is moved while being controlled in the rotational speed and the rotational direction of the ball screw 12 controlled by the servomotor 13.

The servo motor 13 controls the rotation of the ball screw 12 while the rotation speed, the rotation direction, the rotation time, etc. are controlled by a control box pre-programmed by the operator of the drilling machine 100.

Here, the punching machine 100 of the present invention is to be drilled as many branches 31 as necessary for the pipe 29 in one operation, which controls the rotation time of the servo motor 13 to rotate intermittently By doing it.

That is, the thermomotor 13 is rotated for a predetermined time and then stopped for a while while the pipe 29 is stopped so that the branch hole 31 is drilled in the pipe 29 by the pipe boring part 3.

In addition, the position on the pipe 29 at which the branch hole 31 is to be drilled is precisely designated by controlling the rotational speed of the servo motor 13 to control the moving distance of the pipe 29.

The pipe boring part 3 is configured to operate the slide push bar 16 to push the punching tip 23 strongly so that the branch hole 31 is drilled on the outer circumferential surface of the pipe 29 as shown in FIGS. 1 and 2. A slide push bar 16 inserted into the mandrel bar 15 to be inserted into the mandrel bar 15 to push the punching tip 23 of the drilling end 14 to drill the branch hole 31, and a slide push bar ( A punching bar 17 for pushing 16 into the mandrel bar 15 and an actuating cylinder 18 for operating the punching bar 17.

One end of the mandrel bar 15 is fixed to the rear end fixing table 21 of the work table 4, and the other end passes through the clamp 6 to support the upper groove 37 of the shear fixing table 20 of the work table 4. There is a shear end 20, the perforated end 14 is coupled to the end of the side.

Here, the mandrel bar 15 has an outer diameter of the inner diameter of the pipe 29 or a size smaller than the inner diameter so that the length along the mandrel bar 15 with the pipe 29 inserted into the outer circumferential surface of the mandrel bar 15. Direction, and the slide push bar 16 is inserted into a hollow tubular inside to be moved.

In addition, a punching tip 23 is inserted into the hollow inside of the punching end 14 as shown in FIG. 8, and the punching tip 23 is pushed up by the slide push bar 16 to the pipe 29. The branch hole 31 is to be drilled.

As described above, the punching tip 23 of the perforated end 14 serves to perforate the branched hole 31, so even if the wear-resistant material is used for metal, the punched end 14 is frequently worn and deformed or broken easily. It must be replaced.

To this end, the drilling end 14 is fixed to the bolt coupling as shown in Figure 8 end of the mandrel bar 15 so that it can be easily removed and replaced.

The slide push bar 16 for raising the punching tip 23 is inserted into the mandrel bar 15, one end of which is fastened to the movement fixing table 22 at the rear end of the work table 4 and the other end of the mandrel bar 15. Is located at the perforated end 14 of the.

Accordingly, as shown in FIG. 4, when the movable fixing plate 22 is pushed forward by a predetermined length as shown in FIG. 4, the slide push bar 16 is also pushed forward together with the perforated end 14 of the end of the mandrel bar 15. ) To raise the punching tip 23.

Here, the end of the slide push bar 16 is inserted into the guide groove 24 of the punching tip 23 as shown in FIG. 7 as the slide pusher 25 in which a guide rail 26 for elevating the punching tip 23 is formed. It is.

And, while the slide fixing bar 16 is fixed to the movable stand 22, both ends are inserted into the guide bar 32 of the worktable 4, while being coupled to the punching bar 17, accordingly punching bar As the front and rear movement of the (17) is moved over a predetermined length of the guide bar 32.

An operation cylinder 18 is installed at the other end of the punching bar 17 fastened to the movable fixing rod 22 to which the slide push bar 16 is fixed. The length of the lower end portion at which the operation cylinder 18 is installed as shown in FIG. 2. Is eccentrically longer than the length of the upper end so as to be axially supported on the worktable 4 so that a force stronger than the force generated in the working cylinder 18 by the action of the lever principle is loaded on the movable fixing rod 22 to which the slide push bar 16 is fastened. do.

Here, the punching bar 17 reciprocates back and forth in a predetermined length range by the reciprocating motion of the operation cylinder 18 operated by hydraulic pressure or pneumatic pressure, and thus the end of the slide push bar 16 fastened to the movable fixing table 22. The slide pusher 25 is repeatedly pushed up and down the punching tip 23 while entering and exiting the drilling end 14.

Since the mandrel bar 15, the drilling end 14, and the slide push bar 16 are frequently in contact between metals, they are made of wear-resistant mold tool steel or high-speed tool steel. It may also be made of ordinary hardened carbon steel.

Turning to the drilling process of the branch hole 31 using the drilling device 100 of the present invention having the configuration as described above in detail as follows.

First, a plurality of pipes 29 are inserted into the clamp 6 by inserting them into the periphery 14 of the mandrel bar 15 at the end of the mandrel bar 15, and press the pneumatic cylinder 19 at the upper end of the clamp housing 9.

When the pipe 29 is gripped, the ball screw 12 is rotated by the servo motor 13 to move the pipe 29 to the rear end fixing table 21 at the rear end of the work table 4, and then the pipe 29 is moved to the work table 4 again. In this case, the working cylinder 18 is reciprocated every time the pipe 29 is stopped while the pipe 29 is intermittently moved.

Accordingly, the punching bar 17 coupled with the operation cylinder 18 momentarily strongly pushes the slide push bar 16 to raise the punching tip 23 of the punching end 14 so that the branching hole 31 is drilled. Afterwards, the punching tip 23 is lowered.

As the branch hole 31 is drilled from the inside to the outside of the pipe 29 as described above, the burr 38 generated when the branch hole 29 is drilled is the pipe 29 as shown in FIG. Unlike being formed inwardly, by being formed outside of the pipe 29, welding is easily performed when the branch pipe 30 is welded to the pipe 29, as shown in FIG. 9B, and the inside of the pipe 29. As the branch pipe 30 does not protrude, the quality of the pipe 29 is improved.

As described above, the punching tip 23 is raised and the branching hole 31 is drilled and then the descending process is repeated in the process in which the pipe 29 is intermittently moved to the end of the front end of the work bench 4, so that the required number of times is required. As many branch holes 31 are drilled into the pipe 29.

Here, the stop position when the pipe 29 is intermittently moved so that the branch hole 31 is drilled exactly at the predetermined position of the pipe 29 is programmed in advance in the control box of the servomotor 13.

In the above, the pipe 29 is first moved to the rear end fixing stand 21, and then the branch hole 31 is drilled while the pipe 29 is moved to the front of the work bench 4, but the pipe 29 is reversed from the beginning. The branch hole 31 may be drilled while moving to the fixing table 21 intermittently.

In the present invention as described above, in order to fabricate the branch hole 31 for communicating the branch pipe 30 to the pipe 29 in order to manufacture the T-shaped pipe 29, the pipe fixing portion is fixed a plurality of pipes 29 (1), a pipe moving part 2 for intermittently moving while controlling the position of the pipe 29, and a pipe drilling part 3 for drilling the branch hole 31 from the inside of the pipe 29 at a predetermined interval. By having a certain number of branch holes 31 drilled in the plurality of pipes 29 even in one operation, the T-type pipe 29 has an effect of increasing productivity.

In addition, the branch hole 31 is drilled from the inside of the pipe 29 to the outside thereof so that the burr 38 generated at the time of manufacturing the branch hole 31 is formed outside the pipe 29, thereby improving the quality of the product. There is an effect of improving and improving energy efficiency.

Claims (5)

A pipe fixing part (1) consisting of a plurality of clamps (6) for holding the pipe (29), a clamp housing (9) through which the screw (6) is fixedly installed and threaded with a ball screw insertion hole (36); ; A pipe moving part (2) consisting of a ball screw (12) fastened to the ball screw insertion hole (36) and a servo motor (13) for moving the clamp housing (9) by rotating the ball screw (12); ; Pipe punching part (3) for operating the slide push bar (16) to push the punching tip (23) to drill the branch hole (31); The pipe perforation machine according to claim 1, wherein the clamp (6) is detachably fastened to a pneumatic cylinder (19) installed in the clamp housing (9) to press the pipe (29). The pipe drilling machine of claim 1, wherein the clamp housing (9) is formed with a guide bar insertion hole (35) and is inserted into and guided by a guide bar (32) fixed to a work table (4). The pipe drilling part (3) is a slide push bar (16) is fastened to one end of the punching bar (17) which is eccentrically axially mounted, and an operating cylinder (18) is installed on the other end to force the lever. Branch punching machine for pipes. The slide push bar (16) according to claim 1, wherein the slide push bar (16) is inserted into a tubular mandrel bar (15) having a perforated end (14) at its end, and pushes the punching tip (23) installed at the perforated end (14). Branch drilling machine of the pipe for drilling the pipe (29).