JP2550090B2 - Coil-shaped resin pipe storage / straightening device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention stores a resin pipe wound in a coil shape in a coiled state and can store and straighten a resin pipe that can be delivered while straightening the bending when used. Regarding the device.

[Conventional technology]

Since a resin pipe such as a polyethylene pipe can be bent to a degree having flexibility, it can be bent into a coil shape. Therefore, it is convenient to store the resin pipe in a coil shape during storage and transportation.

Conventionally, a storage drum for storing a resin pipe having a relatively small diameter of 25 A (tube inner diameter 25 mmΦ) or 30 A (tube inner diameter 30 mmΦ) in a coil state has been known. This is a resin pipe wrapped around a storage drum like a wire, stored and transported,
In use, one end of the resin pipe is pulled out from the drum while rotating the storage drum.

[Problems to be solved by the invention]

However, in such a rotary storage drum type, since it is necessary to rotate the entire drum when the resin pipe is pulled out from the storage drum, a relatively large diameter (generally 2 to
A rotation drive device for rotating and driving a 3 mΦ drum is required, and the entire device becomes large. In the past, it was done by hand to straighten and straighten the resin pipe drawn from the storage drum, but for example, in the case of a large-diameter resin pipe with a diameter of 50 mmΦ, it is practical to correct it by hand anymore. This is impossible, and therefore, in the case of a large-diameter resin pipe, it cannot be stored and transported in a coil shape.

SUMMARY OF THE INVENTION The present invention aims to solve the problems of the prior art.

That is, it is an object of the present invention to provide a device that can easily store and store a pipe in a coiled state regardless of the diameter of the pipe and can easily correct the bend when the resin pipe is used.

Another object of the present invention is to store and straighten a coiled resin pipe which does not require a large-scale rotation drive device when pulling out the coiled resin pipe from the storage portion and can deliver the coiled resin pipe with simple and small power. Is to provide.

[Means for solving problems]

In order to achieve the above object, a coiled resin pipe accommodating / straightening device according to the present invention includes a substantially annular accommodating frame having a diameter larger than a coil diameter for holding a resin pipe wound in a coil shape, and the accommodating device. A plurality of rotation supporting rollers attached to the frame at predetermined intervals and arranged on a virtual circle having a diameter smaller than the frame diameter, and one end of a coil-shaped resin tube rotatably held by the rotation supporting rollers are provided outside the storage frame. And a bending straightening device comprising a roller means for straightening the bending of the resin pipe while bending it in a direction opposite to the bending direction of the coil, and the coiled resin pipe wound tightly in advance from the free state is stored in the storage frame. When housed inside, it is characterized in that it is inscribed in the rotation supporting roller due to its elastic restoring force in the radial direction.

[Action]

The resin tube tightly wound beforehand expands its diameter by its elastic restoring force when released in the storage frame. As a result, the resin pipe is inscribed in the rotation support roller mounted on the storage frame on the same virtual circle. Thus, the resin tube can be freely rotated in the storage frame by the rotation supporting roller, and the resin tube can be easily fed out by pulling the free end of the resin tube with a small force. On the other hand, since a bend straightening device composed of roller means is provided outside the storage frame, the resin pipe can be bent straight in a direction opposite to the bending direction of the coil at the time of storage by simply passing the resin pipe through the bend straightening device. Be corrected.

〔Example〕

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The resin pipe accommodating / straightening device according to the present invention is basically composed of a resin pipe P accommodating portion 11 wound in a coil shape and a correcting portion 51 for correcting the bending of the resin pipe. The resin pipe P is generally carried in from the manufacturing factory in a state of being wound in multiple layers. When the resin pipe is carried in, the resin pipe is held in a tightly wound state in advance by a strip or a string so that the winding of the coil does not become loose.

The storage section 11 has an annular storage frame 15 held by the support legs 13. The storage frame 15 is composed of, for example, a pair of fixed wheels 15a and 15b located at the front and rear.
Ribs (horizontal members) 17 extending in parallel with the axis of the wheel are integrally connected and fixed at a predetermined distance from each other. The ribs 17 are arranged around the fixed wheels 15a and 15b at appropriate angular intervals (for example, 45 ° intervals).

Thus, the fixed wheels 15a and 15b form a cylindrical storage space in which the body portion and the front and rear portions are opened.

As shown in FIG. 1, one fixed ring, for example, the rear wheel 15b, is provided with a pair of rods 21 that form a retaining means for the coiled resin pipe P. To be fixed. Apart from the above, the retaining means may be formed by radially arranging three or more rod bodies, or may be a wall surface covering the entire inner diameter opening of the rear wheel 15b. In the latter case, the rear wheel 15b is equivalent to a simple disc. In short, it is sufficient to prevent the resin pipe from coming out of the storage space when the coiled resin pipe P is inserted into the storage space formed by the two fixed wheels.

For the same purpose, a pair of rods 23 forming a retaining means is attached to the other fixed wheel, for example, the front wheel 15a. However, regarding the front wheel 15a, a storage frame (storage space) 15
Since it serves as an entrance and exit when the resin pipe P is inserted therein, it is necessary to detachably attach the rod body 23 to the front wheel 15a. Therefore, the front wheel 15a has, for example, two sets of retainers 2 having an L-shaped cross section.
7 and 29 are fixed so that the retainers of each set are at the same height position, and the respective rod bodies 23 are bridged in parallel there. By doing so, attachment and detachment of the rod body 23 can be performed extremely easily. However, apart from this, the retaining means for the front wheel 15a is
Similar to the retaining means of 5b Alternatively, three or more rods may be arranged in a radial pattern, and a disc-shaped retaining wall may be detachably attached to the inner diameter of the front wheel 15a. Further, since the front and rear retaining means prevent the coil-shaped resin pipes from falling out of the storage space, it is basically sufficient to bridge each one rod body in a substantially diametrical direction. On the contrary, in the practice of the invention, these retainers are preferred, but not essential and can be omitted.

Further, the attachment / detachment mechanism of the retaining means of the front wheel 15a is not limited to the above-mentioned one, and it is needless to say that a general screw, hook mechanism or the like can be used.

A rotation support roller 29 is preferably provided between the fixed wheels 15a and 15b in parallel with the rib 17 so as not to interfere with the rib 17. The rotation support roller 29 is rotatably supported by the tip of a support arm 31 that protrudes radially inward from the fixed wheel. Rotation support roller 29
It is sufficient to provide at least three at 120 ° intervals, but in the illustrated embodiment, eight at 45 ° intervals are provided. These rotation support rollers 29 are located on a virtual circle 100 having a smaller diameter than the fixed wheels 15a and 15b. As a result, after the resin pipe P wound in a coil shape is inserted into the storage frame 15, the fixing band (not shown) such as a strip or a string that holds the coil state of the resin pipe is unwound to remove the resin pipe. When released, the resin tube expands in diameter due to its elastic restoring force and bulges outward. As a result, the outer circumference of the resin pipe P comes into strong contact with the rotation support roller 29 from the inside, and is integrated with the rotation support roller. Accordingly, the resin pipe P is rotatably supported by the rotation supporting roller 29 in the storage frame 15. It should be noted here that the storage frame 15 itself does not rotate, and only the resin pipe P is rotated by the rotation support roller 29.

The dimensions of the storage frame 15, that is, the diameters of the fixed wheels 15a and 15b and the diameter of the virtual circle 100 of the rotation support roller 29 are of course determined according to the coil diameter of the resin pipe P to be stored.

Further, the rotation supporting roller 29 may be provided with the function of the rib 17 and the rib 17 may be omitted, or conversely, the rib 17 may be provided with the function of the rotation supporting roller.

 Next, the bend correction section 51 will be described.

The bend correcting portion 51 is arranged outside the storage frame 15, preferably at the outlet portion of the free end of the resin pipe P.
That is, the resin pipe P stored in the storage frame 11 can be easily brought into the correction portion 51 by pulling the free end thereof.

The bending correction portion 51 is basically composed of roller means. In the illustrated embodiment, the roller means includes a pair of straightening rollers 57a (57b, 57c) and a feed roller 59a (59b, 59c) that are rotatably supported in a housing 55 mounted on a support base 53 with supporting legs. It has one backup roller 61. In the illustrated embodiment, three pairs of straightening rollers 57-
Although the feed roller 59 is provided, it is intended to deal with the resin pipes P having three kinds of outer diameters (25A, 30A, 50A), and therefore, basically, a pair of straightening rollers is provided. 57
-A feed roller 59 may be provided.

The straightening roller 57 and the feeding roller 59 of each set have a straightening path (groove) 63 of a substantially perfect circle of the resin pipe P corresponding to three kinds of diameters between them.
a, 63b, 63c are formed. Preferably, the straightening roller 57 is used so that the free end of the resin pipe P can be easily passed through the straightening passage for the first time, and the passage width can be finely adjusted to finely adjust the pressure exerted on the resin pipe P. Is movable up and down. That is, the straightening rollers 57a, 57b, 57c are attached to a movable block 69 whose common shaft 67 is vertically movable with respect to the housing 55, and the movable block 69 itself is connected to a feed screw shaft 71 having a straightening handle 73, for example. It is movable vertically. On the other hand, one end of the backup roller 61 is rotatably supported by the other end (free end) of a connecting rod 75 that is coaxially attached to the shaft 67 of the straightening roller 57.
The connecting rod 75 is rotatable about the shaft 67 in both directions.
The tip of the feed screw shaft 79 is rotatably attached to the substantially central portion of the connecting rod 75. Therefore, by turning the adjusting handle 81 attached to the outer end of the feed screw shaft 79, the connecting rod 75 is centered on the shaft 67. The position of the backup roller 61 can be adjusted by rotating it. The feed screw shaft 79 is rotatably held by a bracket 83 fixed to the housing 55.

The backup roller 61 presses the resin pipe P downward in FIG. 1, so that the resin pipe portion sandwiched between the correction roller 57 and the feed roller 59 is bent in the mountain direction. Clogged, and in the illustrated embodiment, the resin pipe P is housed in the storage frame 15.
Since the curl in the valley direction is attached when the curl is unrolled, the backup roller 61 applies a bending force in the opposite direction to correct the curl.

The resin pipe P strongly pushed by the backup roller 61 is deformed into an elliptical shape there, and the deformation is corrected into a perfect circle when passing through the perfect circular correction passage 63 formed by the correction roller 57 and the feed roller 59. It will be. The degree of straightening of the resin pipe P can be adjusted by adjusting the position of the backup roller 61 with the adjusting handle 81 as described above.

The common rotary shaft 60 of the feed rollers 59a, 59b, 59c is a motor 70.
The resin pipe P, which is connected to a rotary drive source such as the above and is sandwiched in the correction passage 63, can be fed in the direction of the arrow S by the frictional force with the correction roller 57. That is, the storage section 11 does not have any driving section, and the resin pipe P is fed out from the storage frame 15 by the frictional force between the resin roller P and the correction roller due to the rotational driving of the feed roller 59. At this time, since the resin pipe P is rotatably held by the rotation supporting roller 29, the resin pipe P can be delivered with a small force.

Preferably, on the inner diameter side of the coil-shaped resin pipe P housed in the housing frame 15, a rotation guide roller 80 similar to the rotation support roller 29 for preventing the resin pipe P from turning up at the outlet is provided.

That is, for example, when the supply of the resin pipe progresses and the number of turns of the coil is reduced, or when the number of turns of the coil is originally small, the resin pipe P is moved by the feed roller 59 by the arrow S.
When the resin pipe P is pulled in the direction, the resin pipe P has insufficient tensile force in the radial direction or the degree of freedom of deformation is increased, so that the resin pipe P is, for example, the two rotation support rollers at the bottom shown in FIG. There is a possibility that it may float up from 29 and extend substantially parallel to the retaining rod 23 below (however, such a possibility is extremely small in normal work,
Therefore, it does not need to be considered in general). In such a state, the resin pipe P may interfere with the rib 17 or the rotation support roller 29, for example, and cause an unexpected inconvenience.

Therefore, in order to prevent such a situation, the rotation guide roller 80 is provided on the inner diameter side of the resin pipe P. The rotation guide roller 80 extends parallel to the rotation support roller 29 between the fixed wheels 15a and 15b. In the illustrated embodiment, the rotation guide roller 80 is at 10 o'clock when viewed from the front of the fixed ring 15a as shown in FIG.
The rear rod 21 extending in the 4 o'clock direction and the lower rod 23 at the front are arranged at the intersections between the two, but the position can be appropriately designed to be optimum. Although not particularly shown, the rotation guide roller 80 is formed of, for example, a shaft rod having a cylindrical rotation roller, and both ends of the shaft rod can be detachably attached to the rod bodies 23 and 21 by hooks or the like. . The rotation guide roller 80 may be removed when the resin pipe P is set in the storage frame 15, and mounted between the rod bodies 21 and 23 after setting the resin pipe. Incidentally, in a normal state, the rotation guide roller 80 is located slightly inside the innermost diameter portion of the resin pipe P when the resin pipe P is set in the housing frame 15, and is positioned so as not to contact the resin pipe. Is preferred. This is because it is easier to mount the rotation guide roller 80 in that case.

Two or more rotation guide rollers 80 can be provided at appropriate intervals in the circumferential direction.

Thus, the resin pipe P is guided by the rotation guide roller 80 even if it is pulled in a state where the temporary tension is small, and is prevented from floating from the rotation support roller 29 at the bottom.

〔The invention's effect〕

As described above, according to the present invention, the storage portion itself is immovable by having the unique configuration of internally supporting the resin tube by the rotation support roller in the storage frame.
The resin pipe can be easily paid out by simply pulling it with a small force from the outside. Therefore, the entire device is small,
It will be cheaper, and in terms of safety, it will be much improved compared to the past.

In addition, since a bend correcting device for the resin pipe is provided outside the storage portion, even if the resin pipe having a large diameter is used temporarily, the bending tendency can be easily corrected. There is no problem with wrapping the tube.

[Brief description of drawings]

FIG. 1 is a front view of a resin pipe storing / straightening device according to the present invention,
FIG. 2 is a right side view of FIG. 11 …… storing part, 15 …… storing frame, 29 …… rotation supporting roller, 51 …… correcting part, 57 …… correcting roller, 59 …… sending roller, 61 …… backup roller, 100 …… virtual circle, P
...... Resin tube.

Claims (1)

(57) [Claims] 1. A substantially annular storage frame having a diameter larger than a coil diameter for holding a resin pipe wound in a coil shape, and arranged on a virtual circle having a diameter smaller than the frame diameter, which is attached to the storage frame at a predetermined interval. A plurality of rotation supporting rollers,
A bend straightening device comprising a roller means for guiding one end of a coil-shaped resin pipe rotatably held by the rotation supporting roller to the outside of the housing frame and bending the resin pipe while bending the resin pipe in a direction opposite to the bending direction of the coil. A coil characterized in that the coil-shaped resin tube wound tightly in advance from the free state is inscribed in the rotation support roller by the elastic restoring force in the radial expansion direction when stored in the storage frame. Storing and straightening device for plastic resin pipes.