KR102040971B1 - Pipe bending device - Google Patents

Abstract

The present invention is to be able to bend the pipe to the desired curvature through the manpower through the manual labor of the operator without consuming the power by the power source; The machine body on a 'plate'; A pair of driven shafts disposed on the surface of one side of the machine body with an interval therebetween so as to be idle; Driven rollers each of which is axially coupled to the driven shafts and rotates in the same direction and has a supporting groove for fitting a pipe to the outer circumferential surface; A movable shaft adapted to idle while advancing at intervals between the driven shafts; A movable roller axially coupled to the movable shaft and having a pressurized groove for fitting a pipe to the outer circumferential surface by fitting in the same direction; Rotating means for rotating the movable shaft; A manual pipe bending device comprising a retracting means for retracting said movable shaft on said machine body; The rotating means includes a shaft tube axially coupled to the movable shaft, connecting frames extending outwardly from the outer circumferential surface of the shaft tube, and a 'ring' shaped handle to which ends of the connecting frames are connected and fixed. Is done by; The retracting means has a piston rod that is axially coupled so that the movable shaft penetrates idlely, and includes a cylinder tube in which the piston rod is retracted by the rotation of the rotating shaft, and is coupled to the rotating shaft and has a length. Provided is a manual pipe banding device comprising a lever.

Description

Pipe bending device

The present invention relates to a pipe bending device for molding a pipe to a desired curvature in the workplace, and more particularly, it is possible to bend the pipe to a desired curvature through a manpower through the manual labor of the operator without consuming power by the power source. The present invention relates to a manual pipe banding device, which is configured to maximize a bending work efficiency at a work site.

In general, in the field of work, such as equipment, construction, such as various machines, various piping work according to the pneumatic or hydraulic pressure is required, it is required to be banded by the angle required for the pipe (pipe) during such piping work.

Conventionally, a number of banding machines for bending pipes have been proposed and widely used. In the case of pipes, such as aluminum or copper tubes, which are generally small in diameter or weak in strength, they are mostly banded by hand.

On the other hand, in the case of pipes with high strength, such as pipes, they are banded by applying heat or by using a separate mechanical device.

In the case of relying on the manual work, the pipe having a diameter of 18 mm or less is mainly applied when bending. In this case, a pipe is inserted between two rollers, and the roller is used as a support point and the band is purely manned by the worker. It was.

In Korean Utility Model Application No. 20-1999-0020085 (name: pipe manual and automatic banding machine / 1991.11.22.), As known in the publication, a hydraulic cylinder is installed on the base plate to connect a lever to the piston. Guide rollers are installed at the front end of the lever to fix the banding roller in the middle, project the connector of the manual bending lever at the opposite side of the lever, fix the second lever as the connecting rod at the end, and the second lever has the second guide roller at the end. At the end, a banding device is described, in which a second bending roller is fixedly installed in a long hole of the base plate and a limit switch and a stopper are installed at the end of the base plate.

And in Korean Utility Model Application No. 20-1994-033662 (name: pipe banding device / 1994.12.12.), As known in the publication, a hexagonal shaft hole for fitting to the hexagonal shaft protruding to the upper portion of the bending device body In the center, the outer periphery has at least two semicircular circumferential grooves, a mold roller consisting of a single gripping stone piece also has two or more semicircular guide grooves on one side thereof, and another support shaft on one side of the upper surface of the body Pivotable hub, stopper which can be pivoted about the end of the hub and pressurized by a lever, and a stopper having two or more semi-circular grooves on the side facing the mold roller, The banding device which consists of the stopper mechanism which consists of this is described.

On the other hand, in Korean Utility Model Application No. 20-2003-0021288 (name: pipe banding device / 2003.07.03.), As is known in the publication, a pair of pipes in contact with the supplied pipe and becomes a point of force A support frame connected to the pipe support shaft at upper and lower portions in the form of a and c-shaped to support / fix the pipe support shaft so as to be rotatable; and a lower guide portion of the hydraulic drive shaft provided at the rear of the support frame. And a bending shoe for transmitting a driving force in a vertical direction across a center point connecting two points of the pipe support shaft.

In addition, Korean Patent Application No. 10-2003-0031922 (name: pipe banding device / 2003.05.20.), As known in the publication, consists of a manual tool that is easy to transport and storage, and has a body having a support A shaft is coupled to the body by a rotating shaft, and a forwarding and reverse rotation is possible as a support point, and a molding roller having a gripping body for holding a pipe on one side, and a support roller for supporting the pipe by being installed side by side with a predetermined interval with the molding roller. And, there is described a banding machine is installed on one side of the body and provided with an operating lever for transmitting the power of the forward and reverse rotation generated by the lifting operation to the rotating shaft as a bevel gear.

1. Korea Utility Model Application No. 20-1999-0020085 (Name: Pipe manual and automatic banding machine / 1991.11.22.) 2. Korean Utility Model Application No. 20-1994-033662 (Name: Pipe banding device / 1994.12.12.) 3. Korean Utility Model Application No. 20-2003-0021288 (Name: Pipe banding device / 2003.07.03.) 4. Korean Patent Application No. 10-2003-0031922 (Name: Pipe banding device / 2003.05.20.)

However, the conventional pipe banding device as described above has a problem that it is difficult to use efficiently in the workplace because its configuration is complicated and a power source such as a power source or a battery is inevitably required.

Accordingly, due to various use conditions depending on the power source, as well as weight and volume, there was a problem that it is difficult to use efficiently at the work site.

The present invention has been proposed to solve the above conventional problems, the object of the present invention, it is possible to bend the pipe to the desired curvature through the manpower through the manual labor of the operator without consuming power by the power source, It is an object of the present invention to provide a manual pipe bending device for maximizing the bending efficiency in the shop floor.

Manual pipe bending device according to the present invention for achieving the object of the present invention as described above, the machine body on a 'plate (plate); A pair of driven shafts disposed on the surface of one side of the machine body with an interval therebetween so as to be idle; Driven rollers each of which is axially coupled to the driven shafts and rotates in the same direction and has a supporting groove for fitting a pipe to the outer circumferential surface; A movable shaft adapted to idle while advancing at intervals between the driven shafts; A movable roller axially coupled to the movable shaft and having a pressurized groove for fitting a pipe to the outer circumferential surface by fitting in the same direction; Rotating means for rotating the movable shaft; A manual pipe bending device comprising a retracting means for retracting said movable shaft on said machine body;

The rotating means includes a shaft tube axially coupled to the movable shaft, connecting frames extending outwardly from the outer circumferential surface of the shaft tube, and a 'ring' shaped handle to which ends of the connecting frames are connected and fixed. Is done by;

The retracting means has a piston rod that is axially coupled so that the movable shaft penetrates idlely, and includes a cylinder tube in which the piston rod is retracted by the rotation of the rotating shaft, and is coupled to the rotating shaft and has a length. It comprises a lever.

In the manual pipe bending device according to the present invention made as described above, the user rotates the rotary shaft using a lever while the pipe is inserted into the supporting grooves of the driven rollers so that the pressing groove of the movable roller presses the other outer surface of the pipe. In the course, the handle is rotated to rotate the movable roller to pressurize and bend in a curved shape while moving the pipe fitted between the driven rollers and the movable rollers; It has the effect that the pipe can be bent to the desired curvature through the manpower of the worker without consuming power by the power source.

Accordingly, it has the effect of maximizing the bending work efficiency at the work site.

1 is a schematic perspective view showing a manual pipe bending device according to an embodiment of the present invention.
Figure 2 is a schematic front view showing a manual pipe bending device according to the present embodiment.
Figure 3 is a schematic planar cross-sectional view showing a manual pipe bending device according to the present embodiment.
Figure 4 is a schematic side cross-sectional view showing a passive pipe bending device according to the present embodiment.
5 is a schematic front sectional view showing a state of use of the manual pipe bending device according to the present embodiment.

Hereinafter, with reference to the accompanying drawings, a manual pipe bending device according to a preferred embodiment of the present invention will be described in detail.

Embodiments of the invention may be modified in various forms, the scope of the invention should not be construed as limited to the embodiments described in detail below. This embodiment is provided to more completely explain the present invention to those skilled in the art. Therefore, the shape of the elements in the drawings and the like may be exaggerated to emphasize a more clear description. It should be noted that the same members in each drawing are sometimes shown with the same reference numerals. Detailed descriptions of well-known functions and configurations that are determined to unnecessarily obscure the subject matter of the present invention are omitted.

1 to 5 is a view showing a manual pipe bending device according to an embodiment of the present invention, the manual pipe bending device 1 according to the present embodiment, the machine body on a 'plate (plate)' (2); A pair of driven shafts 21 arranged on the surface of one side of the machine body 2 with a space therebetween so as to be idle; Driven rollers 211 axially coupled to the driven shafts 21 to rotate in the same direction and having support grooves 212 formed on the outer circumferential surface to fit the pipe 11 to be fitted; A movable shaft 22 configured to idle while advancing and retreating at intervals between the driven shafts 21; A movable roller 221 which is axially coupled to the movable shaft 22 and rotates in the same direction and has a pressurized groove 222 fitted on the outer circumferential surface to fit the pipe 11; Rotating means (3) for rotating the movable shaft (22); The movable shaft 22 comprises an advancing means 4 for advancing and retreating on the machine body 2.

That is, in the state in which the user inserts the pipe 11 in the support grooves 212 of the driven rollers 211 and arranges the movable roller 221 through the retracting means 4, the driven roller ( While rotating the movable roller 221 through the rotating means 3 while pressing the pipe 11 while entering the interval between the 211, between the driven rollers 211 and the movable roller 221. While bending the pipe (11) to be fitted is bent to the desired curvature.

In the machine body 2, it is preferable that a long hole 23 is formed to guide linearly when the movable shaft 21 moves linearly while penetrating.

On the other hand, the interval between the driven rollers 211 is most preferably made of a distance capable of bending the pipe 11 in a curved manner while the movable roller 211 enters close.

In the manual pipe bending device 1 according to the present embodiment, the rotating means 3 is axially coupled to the movable shaft 21 and outwardly from the outer peripheral surface of the shaft 31. It is preferable that the extended connection frame 32 and the ends of the connection frame 32 include a handle 33 having a ring shape.

That is, when the user rotates the handle 33, the movable shaft 22 is rotated while the shaft tube 31 rotates.

Accordingly, while the movable roller 221 rotates, the pipe 11 fitted between the movable roller 221 and the driven roller 211 is pressed and moved in the rotational direction of the handle 33. Pressed by the advancing means 4 is bent in a curved shape.

In the manual pipe bending device 1 according to the present embodiment, the advancing means 4 has a piston rod 411 which is axially coupled to idle when the movable shaft 22 penetrates, and thus the rotation of the rotating shaft is performed. It is preferable that the piston rod 411 includes a manual hydraulic cylinder 41 including a cylinder tube 412 to be advanced, and a lever 42 coupled to the rotating shaft and having a length.

That is, when the rotary shaft is rotated using the lever 42, the piston rod 411 of the manual hydraulic cylinder 41 moves linearly in the direction of the driven roller 211, and the movable roller 221 is driven. Pressure is applied to the roller 211 side direction.

Accordingly, the pressing groove 222 of the movable roller 221 presses the outer peripheral surface of the pipe 11 while bending the pipe 11 to a desired curvature.

In the manual pipe bending device 1 according to the present embodiment made as described above, a user inserts the pipe 11 into the support grooves 212 of the driven rollers 211 at a work site. While rotating the rotary shaft by using the lever 42, the pressing groove 222 of the movable roller 221 presses the other outer peripheral surface of the pipe 11, while rotating the handle 33 to the movable roller Rotating 221 while pressing and moving the pipe 11 fitted between the driven rollers 211 and the movable rollers 221 to be bent in a curved shape.

That is, the pipe is bent to the desired curvature through the manpower through the manual labor of the worker without consuming the power by a separate power source.

Therefore, the banding work efficiency at the work site is maximized.

On the other hand, in the manual pipe bending device 1 according to the present embodiment, the machine body 2 is disposed with a space between each other, a pair of base plate 24 having a 'plate' shape ), And a plurality of fixed frames disposed between and fixed to the base plates (24); The movable roller 221, the longitudinal roller 211, and the manual hydraulic cylinder 41 are disposed between the base plates 24, and the handle 33 and the lever 42 are disposed on the machine body. It is preferable to arrange | position so that it may expose to the outside of (2).

That is, the movable shaft 22 and the driven shaft 21 fixing the movable roller 221 and the longitudinal roller 211 are supported at both ends by a pair of the base plates 24, respectively. It is most preferable that the movable roller 221 and the longitudinal roller 211 rotate stably.

In the pipe 11, it is preferable to enter through a gap between the pair of the base plate 24 to perform the bending operation.

In the manual pipe bending device 1 according to the present embodiment, the movable rollers 221 and the driven rollers 211 have different inner diameters of the pressing grooves 222 and the support grooves 212, respectively. Preferably, the movable shaft 22 and the driven shaft 21 are stacked and fixed in a sequential manner to accommodate bending pipes 11 having different sizes.

Accordingly, it is possible to stably bend the pipes 11 having different diameters, thereby increasing the use efficiency.

In the manual pipe bending device 1 according to the present embodiment made as described above, the ends of the movable shaft 22 and the driven shaft 21, each extending portion extending in the outward direction of the machine body (2) Have (25); In the extension portions 25, the auxiliary movable rollers 221A and the auxiliary driven rollers 212A, which are formed with auxiliary pressing grooves 222A and auxiliary supporting grooves 212A, which are coupled to each other while the pipe 11 is fitted, are respectively shafted. It is preferable to be coupled to rotate in the same direction.

That is, it is most preferable to stably perform the bending of the pipe 11 even from the outside of the machine body 2.

Preferably, the pressing groove 222 of the movable roller 221 and the supporting grooves 212 of the driven rollers 211 disposed in the base plates 24 have a semi-circular cross section. ; It is most preferable that the auxiliary pressing groove 222A of the auxiliary movable roller 221A and the auxiliary supporting groove 212A of the auxiliary driven roller 211A have a cross-sectional shape in a '┗┛' shape.

That is, the bending of the 'circular pipe' through the movable roller (221) and the driven roller (211); To perform bending of the 'square pipe' through the auxiliary movable rollers 221A and the auxiliary driven rollers 211A; Use efficiency is maximized.

One embodiment of the present invention described above is merely exemplary, and those skilled in the art will appreciate that various modifications and equivalent other embodiments are possible therefrom. . Therefore, it will be understood that the present invention is not limited to the forms mentioned in the above detailed description. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims. It is also to be understood that the present invention includes all modifications, equivalents, and substitutes within the spirit and scope of the invention as defined by the appended claims.

1: banding device 11: pipe
2: machine body 21: driven shaft
211: driven roller 211A: auxiliary driven roller
212: support groove 212A: auxiliary support groove
22: movable shaft 221: movable roller
221A: auxiliary operation roller 222: pressurized groove
222A: auxiliary pressing groove 23: long hole
24: base plate 25: extension part
3: rotation means 31: shaft pipe
32: connecting frame 33: handle
4: retraction means 41: manual hydraulic cylinder
411 piston rod 412 cylinder tube
42: lever

Claims (1)

A machine body 2 on a 'plate'; A pair of driven shafts 21 arranged on the surface of one side of the machine body 2 with a space therebetween so as to be idle; Driven rollers 211 axially coupled to the driven shafts 21 to rotate in the same direction and having support grooves 212 formed on the outer circumferential surface to fit the pipe 11 to be fit; A movable shaft 22 configured to idle while advancing and retreating at intervals between the driven shafts 21; A movable roller 221 which is axially coupled to the movable shaft 22 and rotates in the same direction and has a pressing groove 222 fitted to the pipe 11 to be fitted to the outer circumferential surface thereof; Rotating means (3) for rotating the movable shaft (22); And a retraction means (4) adapted to retract the movable shaft (22) on the machine body (2);
The rotating means (3), the shaft tube 31 is axially coupled to the movable shaft 22, the connecting frame 32 extending outwardly from the outer peripheral surface of the shaft tube 31, and the connecting frame 32 Ends of the shells) comprise a handle 33 in the shape of a ring, which is fixedly connected;
The retreating means 4 includes a cylinder rod 412 having a piston rod 411 axially coupled such that the movable shaft 22 penetrates idlely, and the piston rod 411 is retracted by the rotation of the rotating shaft. In the manual hydraulic cylinder (1) comprising a manual hydraulic cylinder (41) and a lever (42) coupled to the rotating shaft having a length;
Ends of the movable shaft 22 and the driven shaft 21,
Each having extensions 25 extending outwardly of the machine body 2;
In the extensions 25,
The auxiliary movable rollers 221A and the auxiliary driven rollers 212A formed with the auxiliary pressing grooves 222A and the auxiliary support grooves 212A, which are coupled to each other by the pipe 11, are axially coupled to rotate in the same direction. Manual pipe banding device.

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