KR101116505B1 - Bending device for tube type pipe - Google Patents

Abstract

PURPOSE: A pipe bending device is provided to improve the accuracy of a pipe bending angle and implement repetitive bending at a fixed angle. CONSTITUTION: A pipe bending device comprises a toggle clamp(30) and a testing jig. The toggle clamp comprises a grip part(31) for clamping a pipe, a tension part which is connected to the grip part, a clamp housing in which the tension part is fixed, and a handle with the bottom fixed outside the clamp housing and the top fixed to the tension part to raise the grip part connected to the tension part. The testing jig has a bending test part for receiving a bent pipe(P).

Description

Bending machine {bending device for tube type pipe}

The present invention relates to a bending machine, and more particularly, to increase the accuracy of the bending angle when bending the tubular pipe used in the piping work, and to be able to repeatedly bend by a fixed bending angle to greatly improve the work efficiency In addition, the stopper's operating lever can be stopped at the same position to maintain the same bending angle so that multiple bendings can be made and the workability of the pipe bent by the toggle clamp is improved. This relates to a banding machine that makes this possible.

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

In order to bend the pipe, a banding machine is used. In general, in the case of a pipe having a small diameter or a weak strength such as aluminum or a copper pipe, most of the pipes are banded by manual labor. In the case of pipes, they are banded by applying heat or by using a separate mechanical device.

In the case of relying on the manual work, a pipe having a diameter of 18 mm or less is applied at the time of bending. In this case, a pipe is inserted between two rollers and one of the rollers is rotated about an axis to support the shaft. The bending of the roller is performed, and the rotation of the roller causes the roller to be rotated by the operator holding the operating lever and rotating by the artificial force of the operator.

However, in the conventional bending machine, a worker places a pipe to be banded between two rollers, that is, a fixed forming guide roller and a forming roller which rotates the forming guide roller, and then bends the pipe by turning an operation lever connected to the forming roller. By doing so, the banding is made, and the banding angle of the pipe cannot be limited because the banding angle of the pipe cannot be set arbitrarily. Therefore, the bending angles of the bent pipes are not precisely matched.

As such, when the bending angles of the pipes do not coincide with each other, the pipes that are constructed when the pipes are connected to each other when the pipes are installed are twisted with each other, resulting in poor construction.

In addition, a large number of pipes should be bent and bent at the same bending angle, and thus, even during a plurality of bending operations, the bending angle of the pipes must be set one by one for the bending of the pipes. There is a problem that the work efficiency is greatly reduced.

In addition, in the case of the conventional banding machine has been developed focusing only on bending of the pipe, that is, bending the pipe, for example, no technology has been developed for the fixing of the bent pipe, so that the pipe of the pipe in the bending process of the pipe When the flow occurs frequently, and there is a problem that the bending work according to the flow of the pipe is elaborate, as well as the elaboration is greatly reduced.

Of course, the bending angle is indicated on the molding guide where the pipe is located and bent, but since the rotation radius of the operating lever must be matched to the indicated bending angle one by one, the fatigue caused by the bending work is doubled and another worker is easily tired. The problem is caused.

Looking at the prior art, a banding machine has been devised, which is published in Korean Patent Publication No. 10-2010-0048363, which is installed to be pivoted on one side of the cradle, and the object placed on the cradle according to the turning. A bending support member for applying a force to pivot the support member and the bending support member which is installed on the opposite side of the one side of the cradle, the bending support member for supporting the object placed on the cradle that is turned in accordance with the turning of the bending pivot member to bend along the contact surface contacting And a support pivot member installed so as to swing at a predetermined angle with the flex pivot pivot member with the flex support member interposed therebetween, and locked when the support pivot member pivots toward the flex pivot pivot member and pivot in the opposite direction. When the lock is released is composed of a one-way clutch.

Such a prior art divides an object by a predetermined angle and can bend sequentially, and can make an object such as a pipe bend efficiently with a small force.

However, such a prior art, while bending the pipe with a small force during the bending operation, as mentioned above does not improve the elaboration of the bending angle of the banding machine or the fixing of the bending pipe as the conventional banding machine Still does not solve the problem.

The present invention has been made to solve the problems of the conventional banding machine, it is possible to further configure the toggle clamp for fixing the pipe to the bending machine to securely hold the pipe bent by the toggle clamp to prevent the flow of the pipe In addition, the bending angle display portion is formed in the forming guide portion, and the forming portion provided with the operating lever forms a bending angle setting line for setting the bending angle by the bending angle display portion and constitutes a stopper that interferes with the rotation radius of the operating lever. By turning so that the rotation radius of the operating lever is rotated only to the radius set by the bending angle display portion and the bending angle setting line, it is possible to bend multiple pipes at the same bending angle, and the bending angles of the multiple bent pipes are the same. It can be achieved, greatly improving the work efficiency according to the bending work To provide a baendinggi so as to have its purpose.

As a means for achieving the above object, the banding machine of the present invention comprises: a base through which a fastening hole is formed at an edge and an arc-shaped rotation radius adjusting hole is formed; A support having a pipe fixing tool fixed at one side of the pipe which is fixed to the upper surface of the base and drawn in and fixed at one side of the upper surface; A toggle clamp coupled to an upper surface of the support and configured to hold a pipe positioned above the pipe fixture of the support to support the pipe introduced into the pipe fixture; A forming roller having a hinge guide hinged and fixed by a hinge pin on the upper surface of the base is positioned to be located at one side of the support on which the pipe fixing tool is provided, and is connected to the forming roller so that the forming roller is rotated by a hinge guide. A molding part having an operating lever to which a bending angle setting line is indicated on an upper surface thereof; A molding guide part fixed to a hinge fixing pin for fixing the hinge guide of the molding part, and having a bending angle display part formed on an upper surface thereof, and having a concave side formed to support an outer surface of the pipe contacting the molding roller of the molding part; The stopper is inserted into the rotation radius adjustment hole of the base and protrudes toward the upper side of the rotation radius adjustment hole of the base, and a screw fastening portion is formed at a lower end, and a position set by a nut fastened to the screw fastening portion is fixed.

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The present invention provides a bending angle display portion of the forming guide portion in the process of bending the pipe by a forming roller of the forming portion which is guided by the forming guide portion and rotated around the forming guide portion. As the bending angle setting line of the molding part can be used to bend the pipe at a precise bending angle, the precision of the pipe bending can be greatly improved, and the rotation radius of the operating lever of the molding part rotated by the stopper interferes once. As the bending work of several pipes is performed by the set bending angle, the bending work of pipes with the same bending angle is possible, which greatly improves the work efficiency and workability, and the pipe can be firmly fixed by the toggle clamp. By improving the fixing of pipes Work can be done.

1 is a perspective view showing a banding machine of the present invention.
2 is a perspective view showing a banding machine of the present invention installed on a table.
Figure 3 is an exploded perspective view showing the configuration of the banding machine of the present invention.
Figure 4 is an exploded perspective view showing the main components of the banding machine of the present invention.
5 is a configuration diagram showing the configuration of the banding machine of the present invention.
6 and 7 are plan views showing the state of bending the pipe using the banding machine of the present invention, respectively.
8 is a plan view showing a state of bending by varying the bending angle by the stopper which is a constituent part of the bending machine of the present invention.
9 is a perspective view showing another embodiment of the present invention bending machine.

Hereinafter, the configuration and operation of the present invention will be described in more detail with reference to the accompanying drawings. In describing the present invention, the term or word used in the present specification and claims is based on the principle that the inventor can appropriately define the concept of the term in order to best describe the invention of his or her own. It should be interpreted as meanings and concepts corresponding to the technical idea of

As shown, the banding machine of the present invention includes a base 10, a support 20, a toggle clamp 30, a molding part 40, a molding guide part 50, and a stopper 60.

The base 10 is installed on the table and fixed as needed. The fastening hole 11 is perforated at the edge and the arc-shaped rotation radius adjusting hole 12 is perforated.

Therefore, the fastening hole 11 is fixed on the table by using a separate bolt and nut, which can be carried by carrying it and being fixed on the table in the field and then performing a bending operation to obtain portability.

The rotation radius adjusting hole 12 is formed in an arc shape so as to penetrate the upper and lower portions of the base 10, and the shape of the adjusting hole 12 is formed in a semicircular shape or about 45 ° as shown.

The support 20 is provided with a pipe fixture 21 on one side of the upper surface of the pipe (P) which is fixed to the upper surface of the base 10 is drawn in and fixed.

The support 20 is located on the upper surface of the base 10 and is fixed to the upper surface of the base 10 by being fastened by a fastening means such as a separate piece.

In addition, the toggle clamp 30 is coupled to the upper surface of the support 20 and positioned above the pipe fixture 21 of the support 20 to support the pipe (P) drawn into the pipe fixture 21. The gripping portion 31 is configured, the toggle clamp 30 is pulled by the handle of the toggle clamp 30 so that the gripping portion 31 is in close contact with the upper part of the pipe fixture 21 of the support 20 to the pipe The pipe P introduced into the fixture 21 is fixed firmly.
That is, the toggle clamp 30 is configured to hold the pipe P, the gripping portion 31, the tension portion 32 connected to the gripping portion 31, and the tension portion 32 to fix the inside thereof. The clamp housing 33 and the lower end is fixed to the outer side of the clamp housing 33, the upper end is fixed to the tension portion 32 to lift the grip portion 31 connected to the tension portion 32 ( 34, the operator lifts the handle 34 in the direction of the clamp housing 33 in one direction so that the grip portion 31 connected with the tension portion 32 is lifted and the grip portion 31 After the pipe (P) is introduced into the pipe fixture 21 in the lifted state, and the handle 34 is flipped to the holding part 31 side to restore the vertical direction again, the holding part 31 is a pipe ( It is held in close contact with the upper surface of the P) bar, the tension of the tension portion 32 is connected to the holding portion 31 is transferred Strongly pressing the pipe (P) held by the unit 31 is prevented by giving the flow for the pipe (P).

The molding unit 40 is hinged to the upper surface of the base 10 by a hinge pin 42 to be positioned on one side of the support 20, the pipe fixing tool 21 is provided with a hinge guide 42 Is provided with a forming roller 43 connected thereto, and is provided with an operating lever 44 connected to the forming roller 43 so that the forming roller 43 is rotated by the hinge guide 42. 45 is made.

The forming part 40 configured as described above, when the operation lever 44 moves along the rotation radius adjusting hole 12 formed through the base 10, the hinge guide 42 of the forming part 40 As the forming part 40 moves with the hinge fixing pin 41 as the axis, the bending of the pipe is performed. The outer surface of the pipe P to be bent is formed on the forming roller 43 of the forming part 40. Close contact.

The molding guide part 50 is fixed to a hinge fixing pin 41 for fixing the hinge guide 42 of the molding part 40 and a bending angle display part 51 is formed on an upper surface of the molding part 40. The side surface 52 is recessed to support the outer surface of the pipe P in contact with the forming roller 43.

Therefore, since the molding guide part 50 is fixed to the hinge fixing pin 41 in which the hinge guide 42 of the molding part 40 is hinged and fixed, the molding roller of the molding part 40 is formed. 43 is the bending process of the pipe (P) by the rotation is progressed around the molding guide 50.

That is, the outer surface of the pipe (P) in the state in which one side is fixed to the pipe fixture 21, the pipe (P) of the forming roller 43 and the forming guide portion 50 of the forming portion 40, respectively Since the close contact with each of the concave-formed side 52, the bending portion of the pipe (P) according to the rotation angle of the forming portion 40 while the forming portion 40 is rotated around the fixed forming guide portion 50 The angle is set so that the bending of the pipe P takes place.

The stopper 60 is inserted into the rotation radius adjusting hole 12 of the base 10 to protrude toward the upper side of the rotation radius adjusting hole 12 of the base 10, and a screw fastening portion 61 is formed at a lower end thereof. The position set by the nut 62 fastened to the screw fastening portion 61 is fixed to interfere with the rotation radius of the operation lever 44 of the molding part 40.

Therefore, the bending angle of the pipe (P) is adjusted according to the position of the stopper 60, the operator according to the bending angle to the bending angle display unit 51 formed on the upper surface of the forming guide portion 50 The bending angle setting line 41 marked on the molding unit 40 is set to set the necessary bending angle, and then the stopper 60 is moved along the rotation radius adjusting hole 12 of the base 10 to set the bending angle. After moving to the position of the forming section 40, the stopper 60 is fixed by tightening the nut 62 fastened to the screw fastening portion 61 of the stopper 60.

The stopper 60 fixed as described above interferes with the rotation radius of the operation lever 44 of the molding part 40 so that the operation lever 44 does not leave the stopper 60, thereby allowing the operator to bend the same pipe. It can be bent at an angle, which not only improves the workability but also greatly improves the precision of the bending angle.

A grip groove 22 for holding the molding guide part 50 fixed by the hinge fixing pin 41 is further formed on the support 20.

Accordingly, since the molding guide part 50 fixed by the hinge fixing pin 41 is gripped by the gripping groove 22, the molding guide part 50 is reliably prevented from flowing during the operation. So sophisticated banding is done.

In addition, as illustrated in FIG. 9, an inspection jig 70 having a bending inspection unit 71 formed therein is further mounted on the table T on which the base 10 is placed to inspect the pipe P.

Accordingly, the pipe (P) after the bending work is placed on the bending inspection unit 71 of the inspection jig 70 can determine whether the bending is done at the desired angle immediately to minimize the failure rate due to the bending operation. .

As described above, the present invention has been described with reference to a preferred embodiment of the present invention as being capable of various modifications, but the present invention is not limited to such an embodiment, and the embodiment is simply applied in combination with the known art. Together with the claims and the detailed description of the present invention it will be seen that the technology that can be used by those skilled in the art that the present invention belongs to be included in the technical scope of the present invention.

10: base 11: fastening hole
12: rotation radius adjustment hole 20: support
21: pipe fixture 22: gripping groove
30: toggle clamp 31: holding part
40: molded part 41: hinge pin
42: hinge guide 43: forming roller
44: operating lever 45: bending angle setting line
50: forming guide portion 51: bending angle display portion
52: forming guide portion side 60: stopper
61: screw connection 62: nut
70: inspection jig 71: bending inspection unit
P: Pipe T: Table

Claims (2)

A base 10 through which a fastening hole 11 is perforated and an arc-shaped rotation radius adjusting hole 12 is through; A support 20 provided with one side of the pipe fixing tool 21 fixed to the upper surface of the base 10 and having one side of the pipe P inserted and fixed thereto; The forming roller 43 is connected to the hinge guide 42 hinged by the hinge fixing pin 41 on the upper surface of the base 10 so that the pipe fixing tool 21 is located at one side of the support 20 provided with the pipe fixing tool 21. A forming part 40 provided with an operating lever 44 connected to the forming roller 43 to rotate the forming roller 43 by the hinge guide 42; The side surface 52 is fixed to the hinge fixing pin 41 for fixing the hinge guide 42 of the forming part 40 and the outer surface of the pipe P in contact with the forming roller 43 of the forming part 40 is supported. Molding guide portion 50 is formed in the recess; Is inserted into the rotation radius adjustment hole 12 of the base 10 protrudes toward the upper side of the rotation radius adjustment hole 12 of the base 10 and a screw fastening portion 61 is formed at the lower end of the screw fastening portion 61 A stopper (60) fixed to a position set by the nut (62) which is fastened to the bottom surface) and interfering with the rotation radius of the operation lever (44) of the forming part (40); A bending angle setting line 45 marked on an upper surface of the molding part 40; In the bending machine consisting of a bending angle display portion 51 formed on the upper surface of the molding guide portion 50,
The upper surface of the support 20 to support the pipe (P) introduced into the pipe fixture 21 without flowing,
A gripping portion 31 for holding the pipe P, a tension portion 32 connected to the gripping portion 31, a clamp housing 33 for fixing the tension portion 32 to the inside, and the clamp housing Toggle clamp 30 provided with a handle 34 for fixing the lower end is fixed to the outer side of the 33 and the upper end is fixed to the tension portion 32 to lift the grip portion 31 connected to the tension portion 32 Is further provided,
An inspection jig 70 in which a bending test unit 71 is formed on a table T on which the base 10 is placed to allow the pipe P, which is completed, to be inserted, to inspect the bending angle of the pipe P on which the bending work is completed. Bending machine characterized in that it further comprises.
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