KR20110002746A - Bending machine - Google Patents

Abstract

PURPOSE: A bending device is provided to improve the bending ability and to automatically bend a pipe by applying heat to a fixed material using a high frequency heating device. CONSTITUTION: A bending device comprises a spinning table(100), a fixing tool(110), a heating member(120) and a power member. The spinning table is installed to rotate. The fixing tool is formed in the upper of the spinning table. The fixing tool fixes materials. The heating members add heat to the material fixed by the fixing tool. The heating member is a high frequency heating device.

Description

Bending Machine

The present invention relates to a bending device, and more particularly, to a bending device to automatically bend (bending) the material is made by pushing the material fixed to the rotary table to the cylinder while heating the high frequency.

In general, in order to bend a round bar or a pipe, a single round bar or pipe material is bent manually.

In addition, since this bending operation is almost done by hand, the same bending is difficult. Therefore, there is a problem that the production of standard products having the same round is difficult.

In addition, when the pipe is to be bent in the same manner as in the prior art, when the thickness of the pipe is thick, there is a problem that it is not bent properly.

In addition, according to the related art, when the pipe is bent in one direction, the thickness of the pipe is different from that of the pipe. In other words, when bending a pipe, the inner part becomes thicker, while the length of the opposite part increases in length, resulting in a thinner pipe. Therefore, there is a problem that the performance of the pipe (pipe) is degraded.

SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the prior art as described above, and to provide a bending device in which a bending of a pipe is automatically performed by the rotation of the rotary table and the force of the cylinder.

Another object of the present invention is to provide a bending device which is provided with a heating means such as a high frequency heater, so that the bending of the pipe is made more smoothly and the performance of the product is improved.

It is still another object of the present invention to provide a bending device in which a plurality of pipes can be bent at the same time and the thickness of the pipes is constant after bending.

Bending apparatus according to the present invention for achieving the above object is a rotary table rotatably installed; A fixing jig provided on an upper side of the rotary table to fix the material; Heating means for applying heat to a material fixed to the fixture; It is provided on one side of the rotary table, the power means for rotating the rotary table by pushing the material; characterized in that it comprises a.

According to the bending device of the present invention as described above, the material (pipe) is fixed to the fixed jig provided in the rotary table, and then bending of the material (bending) is made by the operation of pushing the material through the cylinder. Therefore, the bending of the material can be automatically performed by a simple operation, thereby increasing the work efficiency.

In addition, in the present invention, the bending portion of the material is bent while heating by a high frequency heater, and after being heated, cooling is immediately performed by cooling means. Accordingly, bending of the material is possible with a smaller force, and since the material is cooled immediately after the material is heated and bent, bending (ellipse) is prevented after the desired shape is formed (bended). As a result, according to the present invention, the performance of the product is improved.

In the present invention, the fixed jig installed on the rotary table can be slid left and right. Therefore, there is an advantage that the fixture can be easily moved and installed according to the desired bending radius of the material.

In addition, in the present invention, the material introduced into the bending operation is manufactured so that one side (left side) is thinner than the other side (right side) in advance. Therefore, after the material is bent to one side (left side), the length of the right side is relatively increased, so that the left and right thicknesses of the pipe are the same. Thus, according to the present invention, in spite of the deformation of the material, since it has the same thickness after bending (bending) there is an effect that the quality of the product is improved.

On the other hand, according to the present invention, it is also possible to reduce the radius of bending the material (the bending object) by adjusting the position of the fixture. For example, it is also possible to bend below 1.5DR. That is, when the diameter Ø of the raw material is 80 mm, it is also possible to bend the radius R of the raw material (the bending object) to be 120 mm or less.

Hereinafter, a configuration of a bending device according to the present invention will be described with reference to the accompanying drawings.

1 and 2 show a preferred embodiment of the bending device according to the invention. That is, a plan view of the bending apparatus according to the present invention is shown in FIG. 1, and a cross section of the 'A-A' part of FIG. 1 is shown in FIG. 2.

As shown in these figures, the bending device according to the present invention, the rotary table 100 is rotatably installed, and the fixing jig 110 is provided on the upper side of the rotary table 100 to fix the material (M) ), The heating means 120 for applying heat to the material (M) fixed to the fixing jig 110, and the rotary table 100 is provided on one side of the rotary table 100 to push the material (M) It consists of a power means 130 and the like to rotate.

In more detail, as shown, a support table 104 is provided below the rotary table 100 to support the rotary table 100. The support table 104 is formed to have a shape in which the inside is recessed in a circular shape, and the rotary table 100 is accommodated in this recessed portion and rotated.

The upper end of the rotary table 100 is formed to further protrude to the outside. That is, the rotary table 100 is formed in a circular shape, and further protrudes outward from the upper surface to completely cover the upper end of the rotary table 100.

The rolling ball 102 is provided outside the central portion of the rotary table 100. Accordingly, the rotary table 100 is rotated in the support table 104 by the rolling ball 102.

Specifically, as shown (see FIG. 2), the rotary table 100 and the support table 104 are formed with hemispherical ball grooves 102a, which are symmetrical to each other, and the rolling balls in the ball grooves 102a. 102 is inserted. The ball groove 102a is formed on the entire circumferential surface of the rotary table 100 and the entire inner circumferential surface of the support table 104. Therefore, the rolling ball 102 is provided with a plurality is mounted along the outer peripheral surface of the rotary table (100). This rolling ball 102 serves as a ball of the ball bearing (ball).

In addition, an insertion hole 102b for inserting the rolling ball 102 into the ball groove 102a is further formed on the side of the support table 104.

On the upper surface of the rotary table 100, a flow rail 140 for guiding the fixed fixture 110 to be described below sliding sliding is further provided. That is, as shown, the right side of the upper surface of the rotary table 100 is provided with a flow rail 140 long to the left and right. Therefore, the fixing jig 110 to be described below along the flow rail 140 can facilitate the left and right flow.

The fixing jig 110 is installed on the upper surface of the rotary table 100. The rotary table 100 is for fixing the material (M), is mounted to the rotary table 100, is installed so as to flow left and right (in Figures 1 and 2) along the flow rail 140. This is preferred. That is, it is possible to flow from side to side along the flow rail 140, it is used to be fixed in an appropriate position as needed.

The fixture jig 110, is formed to have a cross-section of the square, the front surface (in Figure 1) of the fixture jig 110 is formed so that the material groove 112 is accommodated in the material (M) is received in the rear , One end (rear end in FIG. 1) of the material M is received and fixed in the material groove 112.

On the other hand, the fixing jig 110 as described above is not directly by the flow rail 140, it is directly fixed to the rotary table 100 with a bolt (Bolt) or the like, or a separate upper plate on the upper surface of the rotary table 100 It is also possible to replace by fixing by a bolt (Bolt) and the like. That is, a plurality of fixing jig 110 is mounted on any position of the upper surface of the rotary table 100 so as to suit various desired curvatures, and a bolt or the like is provided on a separate upper plate or the upper surface of the current rotary table 100. It is also possible to fix.

The heating means 120 is to facilitate bending by heating the material (M), it is made of a high frequency heater. Therefore, the heating means 120 is composed of an annular heating coil 122 for dissipating heat, a main body 124 of the high frequency heater, and the like.

The heating coil 122 is installed to surround the material (M). That is, as shown, the heating coil 122 is formed in a circular ring (Ring) shape, is formed to surround the outside of the material (M) having a circular cross section. And, although not shown, there is further provided an operation unit for operating the heating means 120 made of a high frequency heater.

A high frequency heater is a heat source that radiates heat by using a high frequency, and such a device is widely used in the name of a high frequency heat processor. Therefore, further detailed description of the construction and theoretical knowledge of the heating means 120 will be omitted.

The power means 130, the cylinder body 132 which is operated by air or hydraulic pressure, the rod 134 protruding outward from the cylinder body 132, and is provided at one end of the rod 134 It consists of a fixed end 136, etc. to fix one end of the material (M).

Specifically, the support 150 is further provided at an adjacent position spaced apart from the rotary table 100, and the support body 150 is provided with a cylinder body 132 in a front-rear direction (in FIG. 1). The power means 130 is composed of an air cylinder or a hydraulic cylinder.

At the rear of the cylinder body 132 (in FIG. 1), a rod 134 flowing by air or hydraulic pressure in the cylinder body 132 is formed to protrude rearward (in FIG. 1), and such a rod 134 Fixed end 136 is formed at the end of the).

The fixed end 136 is for fixing one end (tip in FIG. 1) of the raw material M. FIG. Therefore, the fixing groove 136a recessed forward is formed on the rear surface of the fixing end 136, and the tip of the material M is inserted into the fixing groove 136a.

The fixing groove 136a is formed of a groove having a circular shape corresponding to the appearance of the material M, such as the material groove 112 of the fixing jig 110.

The guide rail 152 is further provided on the upper surface of the support 150. The guide rail 152 is to facilitate the left and right movement of the cylinder body 132, it is formed long to the left and right of the support 150.

A fixing piece 154 is further provided on the upper side of the guide rail 152, and the cylinder body 132 is fixed to the guide rail 152 by the fixing piece 154. That is, the fixing piece 154 is installed to surround the upper side of the cylinder body 132, both ends of the fixing piece 154 is fixed to the guide rail 152 or the support 150 by a fastening member. .

One side of the heating means 120 is further provided with a cooling means 160. The cooling means 160 serves to cool the material M heated by the heating means 120.

The cooling means 160 is provided at a body 162 for supplying cooling water, a cooling nozzle 164 provided at an adjacent position of the heating coil 122, and spraying cooling water, and supplied from the body 162. Guide hose 166 or the like for guiding cooling water to the cooling nozzle 164.

The cooling nozzle 164 is provided on the rear side (in FIG. 1) of the heating coil 122 in the same form. That is, it is made of a circular ring (Ring) shape, such as the heating coil 122, is formed to surround the material (M). Therefore, the coolant sprayed simultaneously from the circular cooling nozzle 164 cools the outer surface of the raw material M. FIG.

In FIG. 1, the cooling nozzle 164 of the cooling means 160 is illustrated as the heating coil 122 is integrally formed, but the cooling nozzle 164 is spaced apart from the heating coil 122 by a predetermined distance. It is more preferable that the material M is heated by the heating coil 122 and then completely cooled and then cooled.

On the other hand, one side of the rotary table 100 is further provided with a cooling mechanism 170 for cooling the rotary table 100. The cooling mechanism 170 is configured such that a portion of the cooling water supplied from the body 162 of the cooling means 160 flows into the rotary table 100 to cool the rotary table 100.

Therefore, the cooling mechanism 170, as shown, spiral-shaped cooling tube 172 wound a plurality of times inside the rotary table 100, and from the body 162 to the cooling tube 172. A supply pipe 174 for guiding the coolant to flow therein, and a recovery pipe 176 for guiding the coolant to a high temperature through the cooling tube 172 to be discharged to the body 162.

Of course, it is also possible to configure the cooling water supplied to the cooling mechanism 170 is not the same as the cooling means 160. That is, it is provided with a separate body to play the same role as the body 162 constituting the cooling means 160, from which the cooling water is supplied to the rotary table 100 through the cooling mechanism 170 It is possible.

In addition, since the rotary table 100 rotates at a predetermined angle, the supply pipe 174 and the recovery pipe 176 are preferably made of a flexible material.

The cooling mechanism 170 serves to prevent the heating of the rotary table 100 so that the rotary table 100 rotates smoothly.

Specifically, the rotary table 100 is gradually heated by the heating coil 122 and the like as the operation proceeds. Therefore, since the volume of the rotary table 100 increases as it is heated, the rotary table 100 is gradually in close contact with the support table 104, so that it is difficult to rotate.

As such, in order to prevent the rotary table 100 from increasing in volume due to high temperature, the cooling mechanism 170 as described above is provided.

3 shows a cross section of the material (M). That is, in FIG. 3, the shape of the raw material M supplied to the bending apparatus according to the present invention is shown in cross section.

As shown therein, the material M is made of a pipe (pipe) that is gradually thicker in cross section toward one side. In more detail, as shown, the material M is gradually thicker from the left to the right as shown.

As such, the thickness of the material M is changed so that the thicknesses of both sides are the same after the material M is bent. That is, as shown in Figure 1, when bending the material (M) by the present invention (bending), the material (M) is bent to the left, the right side is the length of the material (M) is increased and the left is the material Becomes thicker. Therefore, as shown in FIG. 3, when the left side thickness of the material M is made thinner, after the bending of the material M is completed, the left and right thicknesses of the material M become almost equal.

Hereinafter, the operation of the bending device as described above will be described with reference to FIGS. 1 to 5.

First, as shown in Figure 1, the material (M) is mounted. At this time, the rear end of the material (M) is mounted to the fixed jig 110, the front end is mounted to the fixed end (136).

In this state, when the heating means 120 is operated, the heating coil 122 is heated to heat the surface of the material (M).

In this state, when the cylinder body 132 pushes the rod 134, the material M is pushed to the rear (in Fig. 1) as shown by the arrow (Fig. 1). Thus, the rotary table 100 rotates counterclockwise (in FIG. 1).

As such, when the rotary table 100 rotates as the work M is pushed by the power means 130, both ends of the work M are fixed, so that the rear end thereof is bent to the left (in FIG. 1). Will be hit. Of course, at this time, the cooling means 160 is operated to cool the material (M) that is heated and moved by the heating means 120 is injected through the cooling nozzle 164.

The cooling mechanism 170 prevents heating of the rotary table 100 so that the rotary table 100 rotates smoothly.

FIG. 4 illustrates a state in which the rotating table 100 is gradually rotated by the above process, and thus the material M is bent. In addition, FIG. 5 is a partial plan view of the state in which the bending of the material M is completed by the above process.

As shown in these figures, when the power means 130 continuously pushes the tip of the work piece M, since the rotation table 100 rotates, the work piece M is rearward as shown in FIGS. 4 and 5. This will bend to the left.

In this process, since the heating coil 122 and the cooling nozzle 164 are provided separately from the rotary table 100, the heating coil 122 and the cooling nozzle 164 are in the initial position. Therefore, the raw material M passes through the heating coil 122 and the cooling nozzle 164 sequentially from the rear end to the front end, and heating and cooling proceed sequentially. That is, after bending of the raw material M while the heating coil 122 passes through the heating coil 122, the material is cooled while passing through the cooling nozzle 164 to prevent excessive bending.

As shown in FIG. 5, after bending of the material M is completed, the material M bent from the fixing jig 110 and the fixed end 136 is separated. Then, the rotary table 100 is returned to its original position to process the next material.

6 is a cross-sectional view showing a shape of a material (pipe) in which bending is completed by the above process. As shown in FIG. 3, the material M having an unbalanced thickness on the left and right sides as shown in FIG. 3 has the same thickness after bending.

The scope of the present invention is not limited to the above-exemplified embodiments, and many other modifications based on the present invention will be possible to those skilled in the art within the above technical scope.

For example, in the above embodiment, the high frequency heater is illustrated as the heating means 120, but in addition to the high frequency heater, various kinds of heating means for raising the temperature of the material M may be used. Of course.

In addition, in the above embodiment, an air cylinder or a hydraulic cylinder is illustrated as the power means 130, but the power means 130 may also be used in various kinds of devices as far as possible to push the material (M) in one direction. Of course.

And, in the above embodiment, one fixing jig 110 is installed on the upper side of the rotary table 100, illustrating the state that the material (M) is bent (bending) one by one, A plurality of fixtures 110, power means 130, and heating means 120 may be provided so that M may be bent at one time.

As described above, in the present invention, it is also possible to be provided with two or more fixing jig 110 to bend two or more materials M at the same time.

FIG. 7 illustrates a bending device provided with three fixtures 110, a power unit 130, and the like, and bending three materials M at the same time. Of course, when a plurality of fixing jig 110 is provided to bend a plurality of materials M at the same time, bending is performed within a range in which interference between each component and the material M is prevented. It is possible.

1 is a plan view showing the configuration of a preferred embodiment of the bending apparatus according to the present invention.

2 is a sectional view taken along the line 'A-A' of FIG.

Figure 3 is a cross-sectional view showing the shape of the raw material bending (bending) in accordance with an embodiment of the present invention.

4 and 5 are partial plan views showing a state in which work is performed by the embodiment of the present invention.

6 is a cross-sectional view showing the shape of the material (pipe) is completed bending according to the embodiment of the present invention.

7 is a plan view showing the configuration of another embodiment of a bending device according to the present invention.

Explanation of symbols on the main parts of the drawings

100. Rotary Table 110. Fixtures

120. Heating means 130. Power means

140. Floating rail 150. Support

160. Cooling means 170. Cooling mechanism

Claims (5)

A rotary table 100 rotatably installed; A fixing jig 110 provided at an upper side of the rotary table 100 to fix the material M; Heating means (120) for applying heat to the material (M) fixed to the fixture (110); And a power means (130) provided on one side of the rotary table (100) to push the material (M) to rotate the rotary table (100). The method of claim 1, wherein the heating means 120 is made of a high frequency heater; Bending device, characterized in that the annular heating coil (122) for dissipating heat is installed to surround the material (M). The method of claim 1 or 2, wherein the power means 130, A cylinder body 132 operated by air or hydraulic pressure, a rod 134 protruding outward from the cylinder body 132, and one end of the rod 134 are fixed to one end of the material M. Bending apparatus comprising a; end (136). According to claim 3, On the upper surface of the rotary table 100, Bending device, characterized in that the fixing fixture 110 is further provided with a flow rail 140 for guiding the sliding flow. The method of claim 4, wherein the material (M) is made of a pipe (pipe) in which the thickness of the cross section gradually increases toward one side; One side of the heating means 120, further comprising a cooling means for cooling the material (M) heated by the heating means 120; bending device characterized in that it is provided.

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