JPH078100Y2 - Long pipe feeding device in automatic pipe cutting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a long pipe supply device in an automatic pipe cutting machine.

[Prior Art] Conventionally, for example, a device shown in FIG. 11 is known as a pipe cutting device for cutting a long steel pipe into a predetermined size in a process of manufacturing a nipple which is one of pipe fittings. ing. In the figure, A is an endless annular conveyer, B is a tailstock attached to the conveyer A, the upper part thereof is exposed on the base C, and as the conveyer A advances in the direction of the arrow a, on the surface of the base C. Move forward. When the tip end surface of the long pipe P held by the holding table D and the pair of holding rollers E, E and rotating in the circumferential direction comes into contact with the contact member F, the conveyor A is stopped and the holding roller E is held. , E, the cutter G disposed opposite to the upper side is rotated and lowered to cut the long pipe P into a predetermined length l, and the cut pipe ΔP, that is, the product is held by the holding rollers E, E. And the cutter G are caused to fly outward in the radial direction, and then the cutter G is raised and retracted, and then the conveyor A is moved forward, and thereafter, the long pipe P is sequentially moved to a predetermined length by repeating the above operation. It is configured to cut into l and obtain the product.

[Problems to be Solved by the Invention] In the conventional pipe cutting device, the tailstock B is
Starts pushing the long pipe P from the starting position P ₁ to the conveyor A
At the same time as moving to the end position P _{2 and} when the cutting of the long pipe P is completed, the conveyor A is reversed and the tailstock B is not retracted and returned to the starting end position P ₁ until the next long pipe is reached. Set P on the holding table D and the holding roller E,
Unable to get ready for cutting.

That is, there is a disadvantage that productivity is inferior because the cutting work must be interrupted every time the cutting of the long pipe P is completed.

Therefore, the conveyor A is moved only in the feeding direction, and at least one pair of tailstocks B are attached to this conveyor at equal intervals, and long pipes P are sequentially fed between the tailstocks to push the pipe P forward. However, it is conceivable to improve the productivity by eliminating the waste of having to interrupt the cutting operation every time the cutting of the long pipe is completed while the cutting is performed.

However, even with such a configuration, a device for sequentially supplying the long pipes is required between the tailstocks B on the conveyor A, that is, in the transport line of the long pipes.

The present invention has been made in view of such circumstances, and it is possible to reliably supply long pipes sequentially to a transfer line with a simple structure, improve productivity, and limit the installation space to a small space. An object of the present invention is to provide a long pipe supply device in an automatic pipe cutting machine capable of relaxing the above restrictions.

[Means for Solving the Problems] In order to achieve the above object, a long pipe of the present invention is disposed adjacent to a side of a conveying line, is inclined downwardly toward the conveying line, and has a long pipe at its tip. Of the pipe rolling portion provided with a stopper for preventing the falling of the pipe, and from the lower limit position of the recess forming the pipe stock portion adjacent to the side of the pipe rolling portion to the rolling portion at a higher position than a straight line. A transfer mechanism that is reciprocally arranged at a continuous upper tilt position and transfers the long pipe to the rolling portion; a drive source that reciprocates the moving mechanism from the recess lower limit position to the upper tilt position; A first detector that is arranged in the moving part to detect the remaining amount of the long pipe on the rolling part, and outputs a rising signal of the moving mechanism to the drive source; For long pipes An unloading mechanism that is provided to unload the long pipe toward the transport line, and detects a necessary supply state of the long pipe to the transport line that is disposed on the transport line, and sends a pipe discharge signal to the transport mechanism. The drive source includes a second detector for outputting, one detector for detecting the remaining amount of the long pipe on the rolling portion, and the other detector for detecting the upper limit of the inclination of the transfer mechanism. And a composite detector for outputting a descending return signal of the transfer mechanism.

[Operation] According to the present invention, the long pipe stocked in the stock portion formed by the transfer mechanism detects this state when the remaining amount of the long pipe on the rolling portion becomes less than a predetermined amount. The first detector outputs a transfer mechanism rising signal to the drive source, and the transfer mechanism is lifted, whereby the transfer mechanism is sequentially transferred onto the rolling portion.

Invention of a long pipe transferred to a rolling portion and rolled to a position where it abuts against a stopper for fall prevention due to the inclination of the rolling portion, a second detector supplies the long pipe to a conveying line. When the necessity is detected, the carrying-out mechanism, which operates based on the signal output from the second detector, carries out the products sequentially toward the carrying line.

Due to the intermittent operation of the drive source, the transfer mechanism reaches the upper limit position of inclination, this state is detected by the other detector, and then all the long pipes of the stock section are transferred to the rolling section, and then the rolling section. When one of the detectors detects a state where the remaining amount of the long pipe is below a predetermined amount, the composite detector composed of both detectors outputs to the drive source the downward return signal of the transfer mechanism. Based on the above, the transfer mechanism returns to the recessed lower limit position, forms the stock portion, and waits.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic side view showing the overall configuration of an automatic pipe cutting machine to which the present invention is applied, and FIG. 2 is a plan view of the same. In these drawings, the automatic pipe cutting machine 1 shows a long pipe P. A feed mechanism 2 for sequentially arranging them in a straight line on the conveying line L and intermittently moving in the axial direction, and a guide tube 3 by the feed mechanism 2.
A holding and rotating roller 4 for holding and rotating the lead-out portion of the pipe P that is sent into the guide tube 3 and is led out from the guide cylinder 3, a pipe cutter 5 disposed above the holding and rotating roller 4 so as to face it, and this pipe. A pipe cutter feed mechanism 6 is provided for cutting the pipe P by reciprocating the cutter 5 when the pipe P stops moving in the axial direction.

The feed mechanism 2 is composed of an endless annular chain conveyor attached to a frame 21, and has a pair of tailstocks 22 at equal intervals.
A and 22B are attached, and the tailstock heads 22a and 22b respectively attached to the tailstocks 22A and 22B are long by moving horizontally on the transfer line L along the frame 21 by the operation of the conveyor. The end surface of the length pipe P is pressed.

In addition, there is a predetermined interval between the tailstocks 22A and 22B.
The long pipes P, which are sequentially carried out one by one from the pipe supply device 30 which is attached to the pair of holding stands 23A and 23B and are arranged adjacent to each other on the side of the frame 21, are horizontally held rotatably on the transfer line L. As a result, the long pipe P has its axis C ₁ oriented in the feed direction (arrow x1) of the feed mechanism 2 and is set at a predetermined height, that is, concentric with the axis of the tailstock heads 22a, 22b.

The guide tube 3 is formed of a tube body having openings at both ends arranged on the downstream side of the feed mechanism 2 on the extension of the axis C ₁ of the long pipe P horizontally held by the holding tables 23A and 23B. The axis C ₂ is fixed on the extension 71 extending from the rear side of the upper end, and its axis C ₂ is set concentrically with the axis C ₁ of the long pipe P horizontally held by the holders 23A and 23B. .

The holding and rotating roller 4 is incorporated in the extending portion 71 of the box-shaped frame 7 and is arranged at a position immediately downstream of the guide cylinder 3, and holds a partial circumference of the pipe led out from the guide cylinder 3 at, for example, three points. To give circumferential rotation to the pipe.
As shown in FIGS. 4 and 5, a rotation drive source (not shown)
By a pair of left and right rollers 4A, which rotate in the direction of arrow x2, x2
It is composed of 4B.

The pipe cutter 5 shown in FIGS. 1 and 2 is composed of a disc cutter, and is provided above the holding and rotating roller 4 to face it, that is, the pipe cutter 5 is attachable to and detachable from the output shaft 52 protruding from the box 51. Fixed on the box 51
The input shaft 53 is connected to a drive motor 55 via a coupling 54, and is rotationally driven by the drive motor 55. The drive motor 55 is swingably mounted on the box-shaped frame 7 via bearings 72, 72.
The box 51 is mounted on the other side of the swing base 8.

The pipe cutter feed mechanism 6 has a cylinder 61 arranged inside the box-shaped frame 7 and one end thereof connected to the tip of a piston rod 62 of the cylinder 61 as shown in FIG. It is composed of a lever 63 pivotally supported by a lever, and a vertical connecting member 64 connecting the other end of the lever 63 and the swing base 8.

In FIGS. 1 and 2, reference numeral 9 denotes a hitting member, which has a function of a stopper with which the cut surface of the long pipe P comes into contact, and as shown in FIGS. 5 to 7, a box-shaped frame. On the front side of the upper end of the other side surface of 7, the swing member 92 is hinged by a pin 91. Then, the contact member reciprocating mechanism 10 constituted by a cylinder interposed between the front end surface of the box 51 and the rocking tip of the rocking member 92 is actuated to cut the hitting member 9 as shown by the solid line in FIG. It reciprocates between the length setting position and the retracted position indicated by a virtual line.

In FIG. 1 and FIG. 2, reference numeral 11 denotes a guide member, and a cylinder 11B which is attached to the front end of the pipe stocker 21A so as to extend to the upper side of the frame 21 via the bracket 11A,
The operation of this cylinder 11B causes it to move up and down, and when it descends, it comes into contact with the pipe and prevents the pipe from swaying.
It is composed of C and. That is, as shown in FIG.
Until the end portion ΔPa of the pipe PA for forward feeding and the start end portion ΔPb of the pipe PB for next feeding, which have already been sequentially cut to a predetermined length and are fed forward, are fed into the guide tube 3, respectively.
A steady rest 11C is brought into contact with the upper surfaces of the end portion ΔPa and the start end portion ΔPb to prevent relative center runout of both pipes PA, PB.

In FIGS. 1 and 2, reference numeral 12 denotes a drive source, which is a motor mounted on a base 12A attached to the front end of the pipe stocker 21A, and its output shaft 12a and feed mechanism 2 are provided.
A power connection / disconnection mechanism 13 is interposed between the input shaft 24 and the input shaft 24.
The power interrupting mechanism 13 shuts off the power transmission from the output shaft 12a to the input shaft 24 to stop the feed mechanism 2 when the load of the feed mechanism 2 in which the cut surface of the pipe is in contact with the contact member 9 is high.
Moreover, the feed mechanism 2 in which the hitting member 9 does not contact the end face of the pipe
When the load is low, it is configured by a mechanism for transmitting power from the output shaft 12a to the input shaft 24 to operate the feeding mechanism 2, for example, a magnetic powder clutch.

In FIG. 3 and FIG. 4, 14 is a protrusion guide member,
Reference numeral 15 indicates a shutter. The protrusion guide member 14 is a curved claw provided on the first locus FL1 in which the pipe cut by the pipe cutter 5 is blown by the cutting force (rotational force) of the pipe cutter 5 and the rotation force of the holding rotation roller 4. Made of metal in the shape of a box, the tip of which is located behind the pipe cutter 5 and closer to the holding and rotating roller 4.
It is attached to 51. Further, the shutter 15 is provided so as to reciprocate between a rear end open position indicated by a solid line and a front end shielded position indicated by an imaginary line, and is located at the rear end open position during normal pipe cutting work, that is, during product production. The cut product falls along the second locus FL2 and is thrown into a storage case (not shown) provided below, and a predetermined cutout or end cutout of the pipe is provided. When an unnecessary portion having a length different from the cutting length (corresponding to approximately ΔPa and ΔPb described above) is pushed out from the guide cylinder 3, more specifically, when the starting end is cut by the pipe cutter 5 and separated as an unnecessary portion, and Guide tube 3 at the end
When it is pushed out from, it is arranged at the front end shielding position on the second locus FL2 so as to collide with an unnecessary portion and drop it along the recovery FL3 to a position different from the aforementioned housing case. That is, the shutter 15 is reciprocally moved to the aforementioned position by the cylinder 16.

In FIG. 1 and FIG. 2, 17 is a tailing head holding rail, which is horizontally held by holding stands 23A and 23B from the upstream end (left end in the drawing) to the downstream end (right end in the drawing) of the conveyor. The tailing head 22a, at the top dead center level where the end surface (left end surface in the drawing) of the long pipe P present can be pressed.
22b for holding the roller, which is rotatably attached to the lower side of the pair of tailstock legs (both not shown) is attached to the frame 21 so as to roll. At the downstream end thereof, a descending guide portion 17A that descends at a relatively large inclination angle in the feed direction is formed.

In FIG. 2, LS1 to LS4 denote limit switches, which are attached at predetermined positions on the upper surface of the frame 21 to which the conveyor is attached with a predetermined interval, and which are attached to the holding table 23A (shown in the figure). (Omitted) is engaged and disengaged.

The pipe supply device 30 is disposed adjacent to the side of the transfer line L, and as shown in FIG. 10, is a stopper that inclines downward toward the transfer line L and prevents the long pipe P from falling. It has a rolling part 32 provided with a tip 31 and a transfer mechanism 33 arranged in the rolling part 32.

The rolling portion 32 is formed at the upper end on the frame 21 side of the frame 40 arranged adjacent to one side of the frame 21 to which the feeding mechanism 2 is attached, and the transfer mechanism 33 is one of the rolling portions 32 of the frame 40. It is incorporated into the frame 40 adjacent to the side. That is, the transfer mechanism 33 includes the first arm 33A and the second arm 3A.
3B and the base end of the first arm 33A is a frame 4
It is pivotally attached to the other end of 0. And the second arm 33B
The base end portion of the first arm 33A is pivotally attached to the substantially central portion of the first arm 33A, and the tip end portion thereof is placed on the horizontal member 40A fixed to the frame 40 and is held substantially horizontally.

The drive source 34 inclines forward and downward at the same inclination angle as the rolling portion 32 from the recessed lower limit position indicated by the solid line to the transfer mechanism 33, and is continuous to the rolling portion 32 at a high position in a straight line. For reciprocating over the tilt upper limit position, which is constituted by a cylinder, and the tip of its piston rod is connected to the tip of the first arm 33A. Therefore, the drive source 34
When the transfer mechanism 33 is positioned at the lower limit position of the recess shown by the solid line by the operation of, the stock portion 35 for stocking the pipe P is formed.

In order to carry out the pipe P stopped by the stopper 31 on the upper surface of the rolling section 32 toward the carrying line L of the pipe P, the carry-out mechanism 36 contacts the stopper 31 and positions the pipe P positioned at the most distal end. It is for pushing up from below, overcoming the stopper 31 and dropping it to the holding tables 23A, 23B (see FIGS. 1 and 2). The cylinder 36A and the pushing-up member fixed to the upper end of the piston rod of this cylinder 36A. It is composed of 36B.

When the remaining amount of the long pipe P on the rolling portion 32 reaches a predetermined amount (four in the illustrated example), the first detector 37 detects the remaining amount and the transfer mechanism 33 is recessed by a solid line. A drive source that raises the signal from the input / output lower limit position to the upper limit position of the tilt indicated by virtual selection
It is for outputting to 34, and is composed of a limit switch arranged at a predetermined position of the rolling portion 32.

The limit switch LS1 shown in FIG. 2 also functions as the second detector 38. That is, the detector 38 detects the state in which the long pipe P must be supplied to the transport line L, and from this, the cylinder 36 of the unloading mechanism 36 shown in FIG. 10 is detected.
A signal is output to A, the carry-out mechanism 36 is operated, and the pipe P is carried out to the carrying line L. That is, as described above, the long pipe P is dropped on the holders 23A and 23B.

The composite detector 39 includes the first detector 37 and a third detector 39A that detects the upper limit position of the inclination of the transfer mechanism 33, and outputs a downward return signal of the transfer mechanism 33 to the drive source 34.

Next, the operation of the above configuration will be described.

As shown in FIG. 10, when a long pipe P is placed on the rolling section 32 and a large number of stocks are stocked in the stock section 35, the limit is set by the forward movement of the conveyor constituting the feed mechanism 2. When the switch LS1, that is, the second detector 38 of the pipe supply device 30 detects the holding table 23A, the power interruption mechanism 1
A signal for removing the magnetic field is sent to the magnetic powder clutch that constitutes part 3, and the power interruption mechanism 13 is shut off to stop the conveyor, and the cylinder 36A of the carry-out mechanism 36 is activated to hit the stopper 31. The long pipe P that is in contact with the pipe 31 is pushed up, the stopper 31 is overcome, and the pipe is dropped in the direction of the transport line L. The pipe is horizontally and rotatably held by the pair of holding stands 23A and 23B.

Immediately after the above, the cylinder 11B constituting the guide member 11 shown in FIG. 9 operates to lower the steady rest 11C,
The starting ends of the long pipes P held by the holding stands 23A, 23B and the ending ends of the forward feed pipes PA that are already inserted into the guide tube 3 and are rotating are brought into contact with each other, so that both pipes P, PA Prevent relative center runout between them and arrange them in a straight line.

Immediately after the above, a magnetic field is formed in the magnetic powder clutch forming the above-described disconnecting mechanism 13, and the conveyor starts operating. As a result, the long pipe P is held by the holding table 23A,
While being held by 23B, it moves slightly forward together with the holding table, and stops when it comes into contact with the advance pipe PA.

From the start of operation of the conveyor, tailstock 22A,
The tailstock head 22a moves forward with the top dead center level set, contacts the end of the long pipe P, and pushes the long pipe P and the forward pipe PA forward as the conveyor advances.

When the feed pipe PA moves forward and the cut surface comes into contact with the contact member 9 as described above, this contact state is detected by, for example, a limit switch (not shown) mounted behind the contact member 9, This detection signal is output to the cylinder 61 forming the pipe cutter feed mechanism 6. When the conveyor comes into a high load state due to the contact of the cutting surface with the hitting member 9, the power interrupting mechanism 13 is cut off to stop the conveyor. Therefore, the pipe 61 is lowered by the operation of the cylinder 61, and the feed is advanced. The pipe PA can be cut into a predetermined length dimension. Immediately after being cut, the product cut by this is shown in FIG.
By the rotation of A, 4B and pipe cutter 5, once the first trajectory
The FL1 is drawn, and immediately after it is blown, it collides with the protruding guide member 14, and the second force is unified by the reaction force at this time.
It falls along the track FL2 and is stored.

When the limit switch LS2 detects the holding table 23A by continuing the above-described operation, the guide member 11 shown in FIG. 9 returns to operate and separates from the pipe. In this case, the starting end of the long pipe P is inserted into the guide tube 3.

When the limit switch LS3 detects the holding table 23A by continuing the above operation, the cylinder 16 operates to move the shutter 15 to the front end shielding position shown by the imaginary line, and the hit member reciprocating mechanism 10 is actuated to hit the hit member. Member 9
To the retracted position.

Immediately after the above, the unneeded end portion of the advance pipe PA is pushed out from the guide cylinder 3, and by the rotation of the holding and rotating rollers 4A, 4B and the pipe cutter 5 shown in FIG. I was blown to the 14 side and collided with this,
By the reaction force at this time, the second locus FL2 is drawn out and kicked out, and then collides with the shutter 15 and falls along the recovery locus FL3 to a position different from the above-mentioned product.

When the limit switch LS4 detects the holding table 23A, a signal for taking the magnetic field is sent to the magnetic powder clutch that constitutes the power connection / disconnection mechanism 13, the conveyor is stopped, and the pipe cutter feed mechanism 6 is operated to operate the pipe. The cutter 5 is lowered to cut off the unnecessary portion of the starting end of the long pipe P. The cut unused portion at the start end falls along the same trajectory as the unused portion at the end described above and is accommodated.

When the pipe cutter feeding mechanism 6 is restored and the pipe cutter 5 is lifted after the cutting of the start end unnecessary portion is finished, the shutter 15 is returned to the rear end open position and the contact member reciprocating mechanism 10 is operated. A return operation is performed to return the contact member 9 to the cutting length setting position.

Thereafter, as the conveyor moves forward, the long pipe P is pushed forward by the tailing head 22a, and is sequentially cut into a predetermined length.

The above is the operation of the automatic pipe cutting machine.

On the other hand, as described above, the stopper 31 is placed on the rolling portion 32 and
When the most advanced pipe P that has been in contact with is conveyed to the transport line L, the pipe P remaining on the rolling portion 32 rolls, and the next pipe P comes into contact with the stopper 31 and rolls. On the moving part 32, the pipes P which are raised and stocked on the stock part 35 naturally roll in sequence.

All the pipes P piled up on the stock portion 35 roll toward the rolling portion 32, and the above-mentioned operations (1) to (5) are repeated, and the remaining amount of the pipe P on the rolling portion 32 is repeated. When the number becomes four, a. This remaining amount is detected by the first detector 37. That is,
Since the first detector 37 is arranged on the rolling portion 32 in correspondence with the pipe P located at the fifth position from the stopper 31, when the remaining amount becomes four, the detection end will protrude. The remaining amount is detected by the first detector 37, and a signal for raising the transfer mechanism 33 is output from the first detector 37 to the drive source 34.
Lift A and the second arm 33B slightly. As a result, the pipe in the stock section 35 is appropriately rolled and transferred onto the rolling section 32.

b. When the detection end of the first detector 37 is retracted by the rolling transfer of the fifth pipe P from the stock section 35 onto the rolling section 32, the transfer mechanism 33 that has been output to the drive source 34. Is lifted and the transfer mechanism 33 stops.

Therefore, the operations of a and b are repeated according to the fluctuation in the number of pipes P on the rolling section 32, and as a result, the transfer mechanism 33 is intermittently raised by the drive source 34 and stocked in the stock section 35. The pipes P being operated are sequentially transferred to the rolling section 32.

c. When the first arm 33A and the second arm 33B, which constitute the transfer mechanism 33, reach the tilt upper limit position shown by the phantom line in FIG. 10 by the intermittent operation of the drive source 34, this state is detected by the third detection. The pipe P on the first and second arms 33A and 33B, which is detected by the container 39A and reaches the upper limit position of the inclination, is sequentially transferred to the rolling portion 32 according to the inclination.

d. When the number of remaining pipes on the rolling portion 32 becomes four, the first detector 37 detects this for the same reason as in the above a. in this case,
Since the third detector 39A has already detected the state described in the above item c, the composite detector 39 composed of the third detector 39A and the first detector 37 is connected to the drive source 34. Transfer mechanism
The down signal of 33 is output.

e. Due to the c, the upper limit position of the slope shown by the phantom line is continuously lowered to the lower limit position of the recess shown by the solid line, and the stock portion 35
Form and wait.

f. A large number of pipes P are stocked in the stock section 35 following the above e. After that, the above a to f are repeated, and the long pipe P is sequentially supplied to the cutting line L.

[Advantages of the Invention] Since the present invention is configured as described above, it has the following effects.

If it becomes necessary to supply long pipes to the transport line,
That is, in order to perform continuous cutting by the pipe cutting machine, when a long pipe must be supplied on the transfer line, the unloading mechanism automatically cuts the pipes on the rolling parts sequentially according to the progress of cutting work. You can carry it out.

When the remaining amount of the pipe on the rolling unit becomes less than a predetermined number, the pipe is automatically transferred from the stock unit to the rolling unit by the transfer mechanism, so that the pipe supply from the supply device to the transfer line can be interrupted. Absent.

Further, even if the pipe stock amount in the stock section becomes 0, the transfer mechanism automatically returns to the recessed lower limit position to form the stock section when the pipe on the rolling section becomes less than the predetermined quantity. , By the time all the pipes of the rolling section have been carried out to the transport line, a large number of the following pipes can be stocked and carried from here to the rolling section. The pipe supply can be performed continuously without interruption. Therefore, it is possible to contribute to the productivity improvement of the pipe cutting work.

Further, since the transfer mechanism operates by utilizing the space in the vertical direction, it is possible to limit the flat space required for stocking the same number of pipes to a small amount, which reduces the floor space and limits the installation space. Can be relaxed. Moreover, since the structure is simple, the failure rate is low, and it is possible to reliably and reliably supply the pipes for a long period of time.

[Brief description of drawings]

1 to 11 show an embodiment of the present invention, FIG. 1 is a schematic side view showing the entire structure, FIG. 2 is a plan view of the same, and FIG. 3 is an enlarged front view showing a cutting portion, and FIG. The figure is the same plan view, FIG. 5 is a schematic front view showing the relationship between the box-shaped frame and the box and the swing base, FIG. 6 is a side view in the vicinity of the contact member, FIG. 7 is the same plan view, and FIG. FIG. 9 is an explanatory view showing the swinging state of the hitting member, FIG. 9 is an explanatory view showing the relationship between the guide member and the start and end of the pipe, and FIG. 10 is an enlarged front view of the pipe supply device which is the main part of the present invention. FIG. 11 is a schematic side view of a conventional example. 1 …… Automatic pipe cutting machine 2 …… Feeding mechanism 4 …… Holding rotating roller 5 …… Pipe cutter 6 …… Pipe cutter feeding mechanism 30 …… Pipe feeding device 31 …… Stopper 32 …… Rolling part 33 …… Moving mechanism 34 …… Drive source 35 …… Stock section 36 …… Unloading mechanism 37 …… First detector (one detector) 38 …… Second detector 39 …… Compound detector 39A …… Third detector (The other detector) L ... Conveying line P ... Long pipe

Claims (1)

[Scope of utility model registration request] 1. An apparatus for sequentially supplying long pipes to a long pipe conveying line in an automatic pipe cutting machine, which is arranged adjacent to a side of the conveying line and slopes downward toward the conveying line. And a pipe rolling portion provided with a stopper for preventing a long pipe from falling at the tip, and a recessed lower limit position that forms a stock portion of the pipe adjacent to the side of the pipe rolling portion, from the rolling portion to the rolling portion. A transfer mechanism for reciprocatingly moving to a continuous tilt upper limit position at a straight position or higher and transferring a long pipe to a rolling part, and a reciprocating movement of the transfer mechanism from the recess lower limit position to the tilt upper limit position. A driving source, a first detector that is arranged in the rolling portion, detects a remaining amount of the long pipe on the rolling portion, and outputs a rising signal of a moving mechanism to the driving source, and the stopper. Abut and stop An unloading mechanism that is provided corresponding to the long pipe that is carried out toward the transport line, and detects a necessary supply state of the long pipe to the transport line that is arranged on the transport line. And a second detector that outputs a pipe unloading signal to the transport mechanism, one detector that detects the remaining amount of the long pipe on the rolling portion, and the other detector that detects the upper limit of the inclination of the transfer mechanism. And a composite detector configured to output a downward return signal of the transfer mechanism to the drive source, and a device for supplying a long pipe in an automatic pipe cutting machine.