JPH04294945A - Pipe bending processing method, pipe bender and its system - Google Patents

Abstract

PURPOSE:To improve the operation rate of a pipe bender by conducting the retention of a core metal stick by means of either one of the 1st core metal chuck and the 2nd core metal chuck, furnishing a pipe from the old pipe push- pressing side which is the opposite side of a bending portion. CONSTITUTION:The 1st core metal chuck 56, a booster device 57, the 2nd core metal chuck 58 and a bending portion 59 are provided on a base stand 55, and at the same time a core metal stick is arranged at a processing axis center X-X. And a pipe W is inserted from the upstream part of the core metal stick by releasing the retention of the core metal stick that is by means of the 1st core metal chuck 56, and the pipe W is retained by means of the device 57, and movement to the bending portion 59 side is made, and the core metal stick is retained by means of the 1st chuck 56. Afterwards, the pipe W is subjected to bending processing at the bending portion 59 by releasing the retention of the core metal stick that is by means of the 2nd core metal chuck 58. As a result, an operation rate can be improved as it becomes unnecessary to stop a pipe bender 4 at the time of pipe W furnishing and taking out.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] The present invention relates to a pipe bending method, a pipe bender, and a system thereof, in which a pipe feeding device, a pipe cutting device, and a pipe bender are connected to automatically bend a pipe. .

0002

[Prior Art] Conventionally, such a pipe bender has been used to bend the pipe w by fitting the non-bending side ends of the pipe w.
A core metal device a that holds the end position of the pipe w, a chuck device b that holds the middle part of the pipe w by inserting the pipe w, and a rotary bending shape c that holds the non-bending side end of the pipe w. It consists of a clamping mold d that can be moved far and wide and fixed at will, and by driving and moving the core device a in the direction of the axis of the pipe w via the cylinder e, the pipe w can be rotated into the curved shape c.
The chuck device b is configured to be able to be fed and supplied sequentially to the pipe bender, and the chuck device b is configured to be freely movable along a guide rail g laid on the upper surface of the grounding fixed frame f during the bending operation. There is a cylinder e in the rear part of
Because of this, the pipe w has to be supplied and discharged from the bending side, and as a result, the operating rate of the pipe bender is reduced because the rotating bend c, etc. on the bending side is stopped when the pipe w is supplied. When fitting the core metal and pipe w, it is necessary to position and match them, which is manual work and inefficient, and the pipe w supply device becomes complicated and large. However, this method has disadvantages in that it requires a worker to prepare for the bending process, including transporting the pipe w, and it requires space because the pipe w is supplied and discharged at the same location.

[0003] In addition, in the pipe w supplied to the pipe bender, the cut surface of the pipe w is not a perfect circle, and burrs are generated on the inside (described later), and when fitting the pipe w to the core metal, The cut end surface of the pipe w had to be shaped, and this also caused problems in supplying the pipe w to the pipe bender.

[0004] If the pipe w with internal burrs is to be used as it is, the core metal must be made thinner.
In this case, the action of the core bar does not work during the bending process in the pipe bender, resulting in the pipe w being deformed.

[0005] Furthermore, in the conventional pipe bender, since the distance between the rotary bending shape c and the cylinder e is constant, the length of the pipe w is not the same as the final required length, but is longer. Moreover, the pipe w has the disadvantage that it is bent when being transported or fitted into the core metal, and a portion of the expensive pipe w is wasted.

[0006] When bending the pipe w, the cylinder e
To further explain the point that it is necessary to pressurize the pipe w by During the rotation of the pipe w, the tip of the pipe w slipped backward and moved backward, making it impossible to maintain the cross-sectional shape of the bent part and causing it to collapse. Therefore, the pressing force of the clamping die d was strengthened to At the same time, the tip of the pipe w is fixedly gripped (retained) in the rotary bending shape c, and the rear end of the pipe w is pressed by a cylinder e to perform the bending process.For this purpose, a cylinder e is required at the rear of the core bar. It was.

In addition, in conventional pipe cutting, a cutting device called a spin cutter was used, but when cutting the pipe w with the rotary cutter h of the spin cutter, it is necessary to cut the pipe w from the outer peripheral surface to the center. In order to cut in the direction, the inner wall of the pipe w buckles due to the pressing force of the rotary cutter h, and burrs are generated on the inner circumferential surface of the pipe w, which has the drawback that the cut end surface of the pipe w has to be reshaped. Was.

[0008]

[Problems to be Solved by the Invention] The present invention is directed to the bending part side (
Do not attach the pipe to the pipe bender from the front of the bending die).
In order to improve the operation rate of the bending section, that is, the pipe bender, by attaching it from the pressure side of the conventional pipe in a pipe bender, and to make it easier to attach the pipe to the core rod of the pipe bender, It is an object of the present invention to provide a pipe bending method, a pipe bender, and a system thereof that prevent the occurrence of burrs on the inside of the pipe.

[0009]

[Means for Solving the Problems] The present invention is based on the above-mentioned prior art, and provides a method for installing a pipe from the bending part side and taking out the processed pipe from the bending part side at the same location as when it was installed. In view of the issue of having to stop the pipe bender every time a pipe is processed, the first chuck of the core metal, the booster device, the second chuck of the core metal, and the bending part are installed on the base, and the machining axis of these By arranging the core metal rod in the pipe, the core metal rod is held by either the core metal first chuck or the core metal second chuck, and the pipe is installed from the conventional pipe pressing side, which is the opposite side of the bending part, and the pipe is This is an attempt to solve the above problem by making the vendor operate continuously.

[0010] In addition, in view of the problem that burrs are generated on the inside of the pipe at the pipe cutting surface, a rotary rod is inserted into the pipe, fixing both sides of the pipe cutting part, and converging toward the center of the spin cutter. By making a cut from the outer circumference of the pipe to a predetermined depth using a cutter, and then pulling both sides of the cut to separate the cut and cut the pipe, the pipe wall does not buckle on the inside of the pipe at the cut surface and burrs occur. This is an attempt to solve the above problem by preventing the above problem from occurring.

In addition, in view of the problem that the pipe cannot be directly attached to the core bar of the pipe bender, the core bar of the pipe bender is extended to the pipe cutter side and used as the core bar of the pipe cutter, thereby making it possible to This is an attempt to solve the above problem by directly attaching the pipe cut with a cutter to the core bar so as not to cause internal burrs.

0012

[Operation] In the present invention, the core rod is held by the first core rod.
One of the chucks or the second chuck of the mandrel is used to mount the pipe from the conventional pipe pressing side, which is the side opposite to the bending part, and the pipe bender is operated continuously.

[0013] Also, a core rod is inserted into the inside of the pipe, both sides of the cut part of the pipe are fixed, and a rotary cutter converging towards the center of the spin cutter is used to make a cut from the outer circumferential side of the pipe to a predetermined depth, and then to cut the cut part. The pipe is cut by pulling both sides to separate the notches, and the pipe wall does not buckle on the inside of the pipe at the cut surface and no burrs are generated.

Furthermore, by extending the core bar of the pipe bender to the pipe cutter side and making it common as the core bar of the pipe cutter, the pipe cut by the pipe cutter can be cut into the core bar without causing internal burrs. Attach directly.

[0015]

[Embodiment] An embodiment of the present invention will be described below based on the drawings. The pipe bender system of the present invention is an automated bending line that connects a pipe supply section 1, a straightening device 2, a pipe cutter 3, and a pipe bender 4. be.

First, the pipe supply section 1 is constructed by winding a pipe W (not cut to a predetermined length and is long), which is a processing material, in a coil shape around a drum 5. Supplied directly from the manufacturer without going through a processing manufacturer, the material of the pipe W is copper,
Made of iron, etc.

Reference numeral 6 denotes a base for the straightening device 2 and the pipe cutter 3, and on the upstream side of the base 6, a first straightening section 7 in the vertical direction and a second straightening section 8 in the horizontal direction are successively provided. In the first straightening section 7, a substrate 9 is set up on a base 6, and a plurality of straightening rollers 10, 10a, etc. are arranged on the front surface of the substrate 9 above and below the processing axis X-X. Straightening roller 10
, 10a... A pair of guide rollers 11, 1
The straightening rollers 10, 10a, . . . and the guide rollers 11, 11a are provided with straightening grooves 12, 12a, .

In the second correction section 8, a substrate 13 is mounted on the base 6, and the processing axis X is located on the upper surface of the substrate 13.
-A plurality of straightening rollers 14, 14a...(
The same shape as the straightening rollers 10, 10a...) is arranged,
The arcuate (non-linear) pipe W supplied from the drum 5 of the pipe supply section 1 is shaped into a straight line.

Reference numeral 15 denotes a feeding mechanism provided on the upper part of the base 6 on the downstream side of the straightening device 2. A pair of guide shafts 16, 16a are installed on the base 6, and the guide shafts 16
, 16a through guides 17, 17a so as to be slidable in the processing axis XX direction, and a cylinder 19 is provided at the bottom of the slide substrate 18, and a cylinder 19 is provided at a predetermined position of the guide shafts 16, 16a. A stopper 20 is provided so that the sliding amount of the slide board 18 becomes a predetermined stroke.

Reference numeral 21 denotes a lower die provided on the slide substrate 18. On the lower die 21, an upper die 23 that is moved up and down by a cylinder 22 is installed. A pipe hole 24 corresponding to the center XX is formed.

The pipe cutter 3 is installed on the upper part of the base 6 on the downstream side of the feed mechanism 15, and on the base 6, from the upstream side, there are a first cutting chuck 25, a driving part 26, and a cutting part 2.
7 and a second cutting chuck 28 are arranged in series, and the second cutting chuck 28 has a predetermined stroke (2 to 3 cm) toward the downstream side.
) can be slid freely.

In the first cutting chuck 25, a lower mold 30 is installed on the substrate 29 on the base 6 in a fixed position with respect to the processing axis X--X direction, and a cylinder 31 is placed on the lower mold 30. An upper mold 32 that moves up and down is installed, and a pipe hole 33 corresponding to the machining axis X--X is formed in the joint surface of the lower mold 30 and the upper mold 32.

Further, in the driving section 26 and the cutting section 27, a stay is provided on the base plate 29 to rotatably install a pulley 34, and the pulley 34 is driven by a drive motor (not shown) inside the base 6. A spin cutter 36 is arranged in a transparent plastic case 35 on the downstream side of the pulley 34, and a clutch for operating the spin cutter 36 is provided near the spin cutter 36. There are 37.

Next, the cutting section 27 equipped with the spin cutter 36 will be explained.
The rotary head 38 has a collar 39 in the center in the direction, and the rotary head 38 rotates in conjunction with the pulley 34.
Book slide grooves 40, 40a, 40b are bored radially, and slide plates 41, 41a, 41b are fitted into the slide grooves 40, 40a, 40b so that their tips protrude outside the rotary head 38. are doing.

[0025] The slide plates 41, 41a, 41b
tapered surfaces 42, 42a, .
is rotatably attached with a nut 45, and pipe receiving rollers 46, 46a are rotatably attached to the other two fixed shafts 43a, 43b with nuts 47, 47a.

48 is a cutter feed ring, and the cutter feed ring 48 has a tapered surface 49 on its inner surface.
In addition, the cutter feed ring 48 is slidable in the direction of the machining axis X-X, and the clutch 3
7 causes the cutter feed ring 48 to move forward.
Tapered surface 49 of cutter feed ring 48 and tapered surfaces 42, 42 of slide plates 41, 41a, 41b
Due to the contact of a..., the slide plates 41, 41a, 41
b converges toward the center.

It should be noted that the fixed shaft 4 of the one slide plate 41
3 is slightly closer to the center than the fixed shafts 43a, 43b of the other two slide plates 41a, 41b, and the pipe receiving roller 46 of the slide plates 41a, 41b,
46a contacts and holds the pipe W, and the rotary cutter 44 of the slide plate 41 bites into the pipe W slightly.

In the second cutting chuck 28 which can be slid slightly forward in the processing axis X--X direction, a lower mold 50 is installed on the substrate 29 so as to be slidable by a predetermined stroke (2 to 3 cm). A cylinder 5 is placed on the lower mold 50.
1, an upper die 52 that moves up and down is installed, and a pipe hole 5 corresponding to the machining axis X-X is installed on the joint surface of the lower die 50 and the upper die 52.
3 is formed, and sliding of a predetermined stroke is performed by a tension cylinder 54 at the bottom of the lower die 50.

Next, the pipe bender 4 for bending the pipe W will be described. On the base 55, a first chuck 56 of the core metal, a booster device 57, a second chuck 58 of the core metal, and a bending part 59 are connected from the upstream side. In addition, a core rod 60 is installed and supported on the upper part of the base 55 in the direction of the processing axis X-X of these devices. 2. At one side of the chuck 58, the core bar 60
is held.

Therefore, in the first mandrel chuck 56, the first mandrel of the pipe bender 4 is connected to the upstream side part of the base 55, that is, following the second cutting chuck 28 of the pipe cutter 3.
A chuck 56 is installed, and a pair of left and right types 61, 61
The left and right molds 61 and 61a are connected by a cylinder 62, and a pipe hole 63 corresponding to the machining axis X--X is formed in the joint surface.

The booster device 57 is located at the center of the base 55, and a pair of guide rails 64, 64a are mounted on the base 55.
A is provided on a slide substrate 66 via linear guides 65, 65a so as to be slidable in the direction of the processing axis XX.

Reference numeral 67 denotes a pipe pressure tube provided on the slide substrate 66. The pipe pressure tube 67 is rotatable on the slide substrate 66 about the machining axis X--X direction, and the pipe pressure tube 67 is A collet chuck 68 is provided at the tip of the pressure tube 67, and a screw shaft 69 having a driving force is provided below the slide substrate 66 to move the slide substrate 66.

In the second cored chuck 58, a stay 7 is provided on the base 55 in a direction perpendicular to the machining axis X--X.
A second cored chuck 58 is installed which can move forward and backward by a cylinder 71 and a cylinder 71.
It consists of 3a.

Reference numeral 74 denotes an auxiliary bar for the core rod 60, and the auxiliary bar 74 is placed in front of the second core chuck 58. Specifically, the auxiliary bar 74 is provided on the side of the base 55. A cylinder 75 moves up and down via a stay 76 to support the core rod 60 from below.

Finally, to explain the bending section 59 of the pipe bender 4, a rotatable bending mold 77 is installed at the uppermost and frontmost portion of the base 55, and the bending mold 77
A semicircular pipe groove 78 is formed in the bending die 77, and a clamp die 79 is installed at the base end of the bending die 77, and the clamp die 79 is equipped with a hydraulic cylinder (not shown), and a pipe groove 80 is formed. are doing.

Reference numeral 81 denotes a wrinkle removing device installed on the inside at the rear adjacent to the bending die 77. A pressure die 82 is installed to face the wrinkle removing device 81, and the inner surfaces of the wrinkle removing device 81 and the pressure die 82 are There are pipe grooves 8 in each
3,83a is formed.

The pressure mold 82 is equipped with a hydraulic cylinder (not shown), and the hydraulic cylinder presses the pressure mold 82 against the wrinkle removing device 81.

The core rod 60 is arranged from inside the first cutting chuck 25 of the pipe cutter 3 to just before the bending die 77, and midway there, it is inserted into the pipe pressurizing tube 67 of the booster device 57. The pipe pressurizing tube 67 fixes the pipe W fitted on the outside of the core rod 60, and the first core chuck 56 and the second core chuck 58 directly chuck the core rod 60.

Further, although the rotary cutter 44 in the above-mentioned spin cutter 36 is shown as an external cutter type in FIGS. 5, 6 and 15, the configuration and shape of the cutter itself are not particularly limited. As shown in FIG. 18, an inner cutter type rotary cutter 44 may be used.

An application example of the above pipe bender system will be explained below.The operating speeds of the pipe cutter 3 and the pipe bender 4 are different, and when the pipe bender 4 performs bending many times, the pipe cutter There is a considerable difference in the time required for the operation of pipe bender 3 and pipe bender 4, and this is also related to the two differences mentioned above, but it corresponds to the length of pipe W and the bending state (number of times, radius of curvature, etc.) An example of a possible pipe bender system will be explained.

In the pipe bender system in this embodiment, a plurality of pipe benders 4 are installed for one pipe cutter 3, and a conveying device 84 is provided between the two, and the conveying device 84 removes the pipes. The pipes W cut by the cutter 3 and having a predetermined length (same or different lengths) are conveyed to the respective pipe benders 4.

[0042] The conveying device 84 has, for example, support parts 86, 86a for the pipe W on the base 85, and a feeding part 87 for the pipe W (which may be provided on the pipe bender 4 side) at an appropriate location. Similarly to the pipe cutter 3 and pipe bender 4, a core rod and a holding chuck for the core rod (both not shown) may be provided.

Next, the operation of the pipe bending method, pipe bender, and system according to the present invention will be explained. First, in the explanation of the operation of the initial stage of the pipe bender system, the coiled pipe W is moved from the drum 5.
is passed through the straightening device 2, and then the feed mechanism 15, the first cutting chuck 25, the driving part 26, the cutting part 27, the pipe holes 24 and 33 of the second cutting chuck 28, the collar 39,
It passes through the pipe hole 53 and projects to the downstream side of the second cutting chuck 28 (i in FIG. 1).

Furthermore, in such a position of the pipe W,
The core metal rod 60 extends from the pipe bender 4 and reaches near the inside of the cutting part 27 (driving part 26) of the pipe cutter 3 and is always present, so that the pipe W is fitted to the core metal rod 60. There is.

Then, the pipe W is fixed on both sides of the cutting part 27 by the operation of the first cutting chuck 25 and the second cutting chuck 28 of the pipe cutter 3, and the rotary head 38 is rotated by the rotation of the pulley 34 of the drive part 26. let me,
When the cutter feed ring 48 is moved forward by the operation of the clutch 37, the tapered surface 49 of the cutter feed ring 48 and the slide plates 41, 41a, 41b
Due to the engagement of the tapered surfaces 42, 42a..., the slide plates 41, 41a, 41b converge toward the center in the slide grooves 40, 40a, 40b of the rotary head 38, and the pipe W is held by the pipe receiving rollers 46, 46a.
is held in a rotating state, and the rotary cutter 44
contacts the outer peripheral surface of the pipe W in a rotating state and cuts.

[0046] Then, the slide plates 41, 41a, 41
A cut is made into the outer circumferential surface of the pipe W by the amount of cut set according to the length of b, and since the core bar 60 is present inside the pipe W at the time of this cut, the inner wall of the pipe W does not buckle. After that, the drive unit 26, the cutting unit 27, etc. are stopped, and the tension cylinder 5 of the second cutting chuck 28 is
4, pull the tip of the pipe W to the downstream side, and
are separated and cut at the cut portion made by the rotary cutter 44 (ii in FIG. 1).

It should be noted that such cutting of the pipe W is performed not only at the initial stage but also during subsequent normal operation, and such cutting portions (ii and iv in FIG. 1) serve as the reference dimensions and position of the pipe W. Also, as an example of the dimensions at the time of cutting mentioned above, if the wall thickness of the pipe W is 0.5 mm, the distance from the outer circumference is 0.5 mm.
Cut to a depth of 4mm, 0.1m of the inner peripheral surface of the pipe W
A thickness of m is pulled by the tension cylinder 54 to separate and cut.

[0048] Then, for the pipe W for which the initial setting has been completed as described above, and also for the pipe W whose tip was cut in the previous process (initial or normal operation), which is the same during normal operation. Then, the fixing state of the pipe W by the first cutting chuck 25 and the second cutting chuck 28 of the pipe cutter 3 is released, and then the middle part of the pipe W is fixed to the pipe hole 24 by the operation of the cylinder 22 of the feeding mechanism 15,
Then, the pipe W is sequentially moved to the pipe bender 4 on the downstream side by actuating the cylinder 19 (the feed amount is determined by one or more times).

Due to this movement of the pipe W, the tip of the fed pipe W protrudes to the tip of the pipe pressurizing tube 67 of the pipe bender 4 (iii in FIG. 1), and at the same time, the pipe W is pulled out from the pipe supply section 1. will be supplied sequentially.

Incidentally, at the stage when the pipe W is supplied to the pipe bender 4 as described above, the core rod 60 is not connected to the pipe bender 4.
The metal core is fixedly held by the second chuck 58 in front of the metal core and does not move.

After the pipe W is supplied to the pipe bender 4 to a predetermined position, the pipe cutter 3 operates in the same manner as described above to move the pipe W to a predetermined position (i in FIG.
v), and at this time, the pipe W also moves slightly due to the slight movement of the second cutting chuck 28, and immediately after that, the tip end of the pipe W is cut by the booster device 57 of the pipe bender 4.
is fixed by the collet chuck 68 (i in Fig. 1).
ii slightly forward).

Next, in the pipe bender 4, the booster device 57 is moved to a predetermined position (immediately in front of the second chuck 58 of the cored metal, by the operation of the screw shaft 69, and the booster device 57 is
is temporarily stopped at v) in FIG. 1, and the holding state of the mandrel rod 60 is fixedly held by the rear mandrel first chuck 56, and the state of holding the mandrel bar 60 by the front mandrel second chuck 58 is released.

When the second cored chuck 58 is released, the tip of the cored rod 60 is supported from below by the auxiliary bar 74, and the booster device 5 of the pipe bender 4 is supported by the auxiliary bar 74.
7, the auxiliary bar 74 descends, and the tip of the pipe W protrudes in front of the bending die 77 (vi in FIG. 1).

As described above, the core rod 60 is always fixedly held by either the first core chuck 56 or the second core chuck 58, and even if the booster device 57 moves, that is, the pipe W moves, the core rod 60 remains fixed. 60 has a constant position.

[0055] The pipe W that has reached the bending part 59 is
While being held between the clamp mold 79 and the bending mold 77, it is bent by the rotation of the bending mold 77, and the booster device 57 is advanced and rotated by a predetermined angle, and the bending process by the bending mold 77 is successively performed so that the desired shape is obtained.

When the bending process is completed, the fixation of the collet chuck 68 of the booster device 57 is released, the booster device 57 is moved backward, and the state of holding the core bar 60 is changed to the state in which the core bar 60 is held by the second core bar chuck 58 and the core bar second chuck 68 is held by the core bar 60. 1. Release the chuck 56.

In this way, one cycle of cutting and bending the pipe W is completed, and the next cycle starts from the next initial setting state (ii in FIG. 1, which does not exist ahead of this). , at the final stage of advancement of the pipe W (vi in FIG. 1), the pipe W that was processed in the previous cycle and remained at the tip of the core rod 60 is pushed out.

Incidentally, the cut pipe W at the time of initial setting is extruded during the next cycle in the same way as the processed pipe W.

[0059]

[Effects of the Invention] In short, the present invention provides the first chuck 56 of the cored metal, the booster device 57, the second chuck 58 of the cored metal, and the bending portion 59 on the base 55, and the machining axis X-X of these. The core rod 60 is placed in the
Release the holding of the core metal rod 60 by the core metal rod 60, insert the pipe W from the upstream side of the core metal rod 60, hold the pipe W with the booster device 57, move it to the bending part 59 side, and insert the pipe W by the core metal first chuck 56. While holding the core metal rod 60, the holding of the core metal rod 60 by the second core metal chuck 58 is released, the pipe W is moved to the bending part 59 by the booster device 57, and the pipe W is bent in the bending part 59. , so pipe W
The core rod 60 inserted therein can be held by either the first core chuck 56 or the second core chuck 58, and the pipe W can be mounted from the conventional pipe pressing side, which is the opposite side of the bending part 59. Therefore, there is no need to stop the pipe bender 4 when installing or taking out the pipe W, and the pipe bender 4
can be operated continuously to achieve a significant increase in operating rate.Furthermore, by supplying and discharging the pipe W to the pipe bender 4 from two locations, preparations before and after bending are smooth and simple. This can be done in a small space.

To further explain the above effect, the conventional pipe bender stops the pipe bender 4 when attaching or taking out the pipe W, but the pipe bender 4 of the present invention stops the pipe bender 4 when the pipe W and the core bar 60 are fitted together. Even if it takes time to bend the core rod 60, the rear end of the core rod 60 (upstream side and unrelated to the bending process) is free, so even if the bending process is in progress at the bending section 59, the pipe W is attached to the core rod 60. This makes it possible to fit the pipes together (by hand or by operating the pipe cutter 3 and pipe bender 4), thereby reducing waiting time.

Furthermore, in the pipe cutter 3, the pipe W
The core rod 60 is inserted into the inside of the pipe W, both sides of the cut portion of the pipe W are fixed, and the rotary cutter 44 converging toward the center of the spin cutter 36 cuts the pipe W to a predetermined depth from the outer circumferential side, and then cuts both sides of the cut portion. Since the pipe W was cut by pulling and separating the notch part, the inner wall of the pipe W did not buckle on the inner surface of the pipe W, and therefore, no burrs were generated on the inside of the pipe W at the cut surface of the pipe W, and as a result, the pipe W was cut. The pipe W can be attached directly to the pipe bender 4,
It is possible to improve efficiency and reduce costs by eliminating various intermediate operations, and on the other hand, in the pipe bender 4, the first core chuck 56 and the booster device 57 are mounted on the base 55.
, the core metal second chuck 58 and the bending part 59 are arranged in series, the core metal rod 60 is arranged on the processing axis XX, and the holding of the core metal rod 60 by the core metal first chuck 56 is released, The pipe W is inserted from the pipe cutter 3 on the upstream side of the cored metal rod 60, the pipe W is held by the booster device 57, and moved to the bending part 59 side, and the cored metal rod 60 is held by the first chuck 56. , the holding of the core rod 60 by the second core chuck 58 is released, the pipe W is moved to the bending section 59 by the booster device 57, and the pipe W is bent at the bending section 59, so that the pipe cutter 3 The pipe W can be processed continuously between the pipe bender 4 and the pipe bender 4, and the operating rate can be significantly increased.
5 allows the pipe W to be cut to any desired length,
Waste can be eliminated, and the core rod 60 serves as a guide when the pipe W is fed, making it easier to receive the pipe W and preventing the pipe W from bending.

[0062] Also, the pipe cutter 3 and the pipe bender 4
In connection, pipe cutter 3 and pipe bender 4
The pipe cutter 3 has a first cutting chuck 25, a cutting part 27, and a second cutting chuck 2 on the base 6.
The second cutting chuck 28 is slidable by a tension cylinder 54 for a predetermined stroke, and the spin cutter 36 of the cutting section 27 is provided with a collar 39 in the center to allow the core rod 60 to be inserted. At the same time,
The spin cutter 36 is provided with a rotary cutter 44 so as to converge toward the center by an amount less than the wall thickness of the pipe W, and the core bar 60 of the pipe bender 4 is extended to the pipe cutter 3 side to connect with the core bar 60 of the pipe cutter 3. Since the pipe cutter 3 and the pipe bender 4 are made common, it is possible to connect the two simply by making the core rod 60 common, and the connection mechanism between the pipe cutter 3 and the pipe bender 4 can be simplified.

Further, the feed mechanism 15 and the straightening device 2 are installed in series on the upstream side of the pipe cutter 3, and the feed mechanism 15 is provided with a slide board 18 that can be moved by a predetermined stroke, and the pipe W is mounted on the slide board 18. Since the pipe hole 24 that can be freely chucked is provided, even if the pipe W to be supplied is in the form of a coil, it can be supplied to the pipe bender 4, and the uncut pipe W can be drawn into the pipe cutter 3, cut, and bent. It is possible to automate everything during the series of processing.

Further, a plurality of pipe benders 4 are installed, and on the other hand, a first cutting chuck 25, a cutting part 27, and a second cutting chuck 28 are arranged in series on the base 6, and the second cutting chuck 28
can be freely slid by a tension cylinder 54 for a predetermined stroke, and the spin cutter 3 of the cutting section 27
6, a collar 39 is provided at the center to insert the core rod 60, and a rotary cutter 4 is attached to the spin cutter 36 so as to converge toward the center by an amount less than the wall thickness of the pipe W.
4 is installed, and the pipe cutter 3 and pipe bender 4 are connected so that the pipe W is conveyed by the conveying device 84. Therefore, one pipe cutter 3 has a plurality of pipe benders 4. A stand can be installed, so complex bending can be performed using the pipe bender 4.
Even when multiple bending processes are performed on one pipe W, the operating rate of both the pipe cutter 3 and the pipe bender 4 can be improved, and different bending processes can be performed simultaneously. Its practical effects are enormous.

[Brief explanation of drawings]

FIG. 1 is a mechanical diagram of a pipe bender system and a diagram showing the positions of pipes.

FIG. 2 is a front view of the pipe cutter straightening device.

FIG. 3 is a plan view of the same as above.

FIG. 4 is a front view of the pipe cutter.

FIG. 5 is a side view of the spin cutter.

FIG. 6 is a schematic cross-sectional view of the same as above.

FIG. 7 is a side view of the first cutting chuck of the pipe cutter.

FIG. 8 is a side view of the second cutting chuck of the pipe cutter.

FIG. 9 is a front view of the pipe cutter and the feeding mechanism.

FIG. 10 is a schematic cross-sectional view of the feeding mechanism.

FIG. 11 is a plan view of the pipe bender.

FIG. 12 is a side view of the first chuck of the pipe bender.

FIG. 13 is a side view of the pipe bender booster device.

FIG. 14 is a side view of the second chuck of the core metal of the pipe bender.

FIG. 15 is a schematic explanatory diagram of pipe cutting.

FIG. 16 is a schematic explanatory diagram of conventional pipe cutting.

FIG. 17 is a cross-sectional view of another embodiment of a spin cutter.

18 is a schematic side view showing the operating state of the spin cutter of FIG. 17. FIG.

FIG. 19 is a front view of a conventional pipe bender.

FIG. 20 is a schematic plan view of a pipe bender system in which a plurality of pipe benders are installed.

[Explanation of symbols]

2 Straightening device 3 Pipe cutter 4 Pipe bender 6 Base 15 Feeding mechanism 18 Slide substrate 24 Pipe hole 25 First cutting chuck 27 Cutting section 28 Second cutting chuck 36 Spin cutter 39 Collar 44 Rotary cutter 54 Tension cylinder 55
Base 56 Core metal first chuck 57 Booster device 58 Core metal second chuck 59 Bending section 60 Core rod 67 Pipe pressure tube 68 Collet chuck 69 Screw shaft 84 Conveying device X-X Processing axis W Pipe

Claims (6)

[Claims] Claim 1: A first chuck of the cored metal, a booster device, a second chuck of the cored metal, and a bending part are arranged in succession on a base, and a cored rod is arranged at the processing axis of these, and the first chuck of the cored metal Release the holding of the core metal rod, insert the pipe from the upstream side of the core metal rod, hold the pipe with the booster device, move to the bending part side, hold the core metal rod with the first chuck of the core metal, and insert the pipe from the upstream side of the core metal rod. A pipe bending method characterized in that the holding of the core bar by the second chuck is released, the pipe is moved to the bending section using a booster device, and the pipe is bent at the bending section. 2. In a pipe cutter, a core bar is inserted into the inside of the pipe, and both sides of the cut part of the pipe are fixed,
A rotary cutter that converges toward the center of the spin cutter makes a cut from the outer periphery of the pipe to a predetermined depth, then pulls both sides of the cut to separate the cut and cut the pipe. Meanwhile, a pipe bender cuts the pipe on the base. The first metal chuck, the booster device, the second core metal chuck, and the bending part are arranged in series, and the core metal rod is placed at the processing axis of these, and the holding of the core metal rod by the first core metal chuck is released, and the core metal rod is removed. Insert the pipe from the pipe cutter on the upstream side of the metal rod, hold the pipe with a booster device, move to the bending part side, hold the core metal rod with the first chuck of the core metal, and remove the core metal rod with the second chuck of the core metal. release the hold on the
A pipe bending method characterized by moving the pipe to a bending section using a booster device and bending the pipe at the bending section. 3. A first chuck of the cored metal, a booster device, a second chuck of the cored metal, and a bending portion are arranged in succession on a base, and a cored rod is arranged at the processing axis of these, and a collet chuck is attached to the booster device. A pipe bender characterized in that it is provided with a pipe pressurizing tube to which a booster device is attached, and the booster device is movable by a screw shaft having driving force. 4. A pipe cutter and a pipe bender are arranged in series, and in the pipe cutter, a first cutting chuck, a cutting part, and a second cutting chuck are arranged in series on a base, and the second cutting chuck is arranged so that the cutting chuck can move for a predetermined stroke. It can be slid freely by a tension cylinder, and the spin cutter for the cutting part has a collar in the center to insert the core rod, and the spin cutter has a rotary cutter that converges to the center by an amount less than the wall thickness of the pipe. 4. The pipe bender system according to claim 3, wherein the pipe bender's core bar extends toward the pipe cutter to serve as the pipe cutter's core bar. 5. A feeding mechanism and a straightening device are provided in series on the upstream side of the pipe cutter according to claim 4, and the feeding mechanism is provided with a slide base that can be moved by a predetermined stroke, and a pipe can be freely chucked on the slide base. 5. The pipe bender system according to claim 4, further comprising a pipe hole. 6. A plurality of pipe benders according to claim 3 are installed, and a first cutting chuck, a cutting part, and a second cutting chuck are arranged in succession on a base, and the second cutting chuck is tensioned for a predetermined stroke. The cylinder makes it possible to slide freely, and the spin cutter for the cutting section has a collar in the center to insert the core rod, and the spin cutter is equipped with a rotary cutter so that it converges to the center by an amount less than the wall thickness of the pipe. 4. The pipe bender system according to claim 3, wherein one pipe cutter is installed, and the pipe cutter and pipe bender are connected so that the pipe is transported by a transport device.