KR101050361B1 - Manufacturing apparatus used spinning of pipe - Google Patents

Abstract

PURPOSE: A spinning apparatus for a pipe is provided to reduce processing pressure when the thickness of a molded object is processed by repetitively processing the processed unit of the object located at a space unit. CONSTITUTION: A spinning apparatus for a pipe comprises a fixing plate, first and second rollers(10,30), and a third roller(60). An upper flange is formed on the top surface of the fixing plate, and lower flanges are formed on the bottom surface. The fixing plate is connected to a vertically movable cylinder. The first and second rollers are rotated by pins(11,31) at the bottom of first and second arms(20,40) with flanges(21,41) and are located at the front end of a molded product. The third roller is rotated by a pin(61) at a third arm(70) with a flange(62) and is opposite the first and second rollers.

Description

Manufacturing apparatus used spinning of pipe

The present invention relates to a more progressive improvement of the Korean Utility Model Publication No. 1990-2390 (published date 1990. 03. 26) "an expansion and contraction processing apparatus of the tube" published by the applicant of the present application.
More specifically, one roller is installed on either side of the inner side and the outer side of the tube (workpiece: hereinafter referred to as a workpiece) which is fixed to the rotating table and rotated together with the rotating table, and two rollers are installed on the other side. As a result, the spinning pressure of the peripheral part of the workpiece is reduced when the machining pressure is reduced, while the thickness reduction rate of the workpiece is significantly less, and the present invention relates to a pipe processing apparatus of a tube to increase the reliability of the finished product.

Utility Model Publication No. 1990-2390, "Expansion and Reduction of Pipe Processing Equipment," is a pulley and a pulley of a motor shaft connected to a pulley of a reducer shaft using a belt, and the reducer shaft is rotated integrally with a rotating table, and the workpiece is a rotating table. The forming roller is temporarily fixed on the upper side, and the forming roller located inside the work piece and the supporting roller located outside the work piece are adhered to the arm by roller pins, and the other flanges of the arm are moved up and down. It is fixed by the flange and bolt fixed to the bottom. The cylinder rods of the up and down moving cylinders are fixed on the stay plate to maintain a constant distance from the cylinder housings by the stays. The ends of the left and right moving cylinders are provided between the protrusions protruding from the position fixing plate. .

The front end of the cylinder rod is inserted in each pin between the protrusions protruding from the side of the cylinder housing, and is fixed to the pins, and the fasteners fixed to the bolts on both sides of the cylinder housing and the fasteners protruding from the lower portion of the cylinder housing insert the frame. It is placed on one side, and fasteners protruding from the upper and lower ends of both sides of the positioning plate are fixed to the pins penetrating the fixing holes while inserting the frame.

The frame has a fixing plate perforated with a support hole, so that the support hole is grounded and the support pin is inserted into and fixed to the support hole.

The conventional "expansion and reduction of pipe processing apparatus" as described above is temporarily fixed by welding, bolts and wedges according to the shape of the workpiece on the rotary plate, and then depending on the thickness of the workpiece to be formed and the shape to be formed. Therefore, adjust the height difference and gap of the roller. This adjustment is determined by the height of the frame by the operation of abutting a support hole perforated on the support and a support hole perforated on the fixing plate of the frame, and fixing it with the support pins, and when both position fixing plates are fixed on the frame, Determine the fixing hole and ground it and fix it with pins.

When the motor is driven in this state, the rotational force of the pulley connected by the belt is decelerated in the reducer to rotate the rotating platen. As the rotating platen rotates, the workpiece temporarily fixed on the rotating platen rotates at the same speed as the rotating platen. do. At this time, the forming roller located inside the workpiece is in the direction of the shape to be molded, and the support roller located on the outside of the workpiece to serve as a support while moving along the molding roller. By virtue of the vertical movement of the roller and the horizontal cylinder, the cylinder housing of the vertical cylinder is moved left and right on the frame.

As described above, the height of the cylinder housing of the up-and-down cylinder mounted on the frame is determined by aligning the perforated support holes on the support and the fixing plate, and the pins are aligned by the perforations of the frame and the fixing plate of the positioning plate. By inserting the cylinder, the cylinders are moved up and down, left and right within the gap between the up and down cylinders, i.e., the rollers are determined, and the workpiece is pressed by the rollers.

However, the conventional "expansion-shrink processing apparatus of the tube" is such that the forming rollers face the inside of the processed part of the workpiece, and the support rollers face the same on the same line with the peripheral edge of the workpiece. Because of the location, the thicker the thickness of the workpiece when spinning the peripheral edge of the workpiece, that is, the more the processing pressure is required, the more the thickness is reduced.
More specifically, the forming roller and the supporting roller are provided in the form facing each other on the same line on the inner and outer sides with the peripheral end of the molding, i.e., the processing part, so that the forming roller located inside the molding The supporting roller located in the direction of the shape to be molded and on the outside of the workpiece is moved along the forming roller and serves as a supporting stand. Therefore, since these rollers are fixed in the form of facing each other on the same line, the length of the contact force acting when the processing pressure applied to one roller is transmitted to the other roller side is very close. It is disadvantageous that the processing pressure needs to be added to the shape machining to achieve the desired shape processing, and as the processing pressure is added, the thickness of the workpiece is reduced. There is a problem of lowering the reliability.

Therefore, the present invention was devised to solve the conventional problems as described above, and an object of the present invention is to install one roller on either side of the inner and outer sides of the workpiece to be fixed to the rotating table and rotated together with the rotating table. The process pressure is reduced when machining the thickness of the work piece by repeating the processing of the work piece of the work piece located in the space formed by each of these rollers by installing two rollers on either side. The purpose of the present invention is to provide a spinning processing apparatus for pipes, which can reduce the reduction rate of the metals so that the reliability of the finished product can be increased.

According to the present invention, in the spinning processing apparatus of the tube for forming the peripheral end of the workpiece, the upper flange 53 protrudes on the upper surface, each lower flange 51 at regular intervals on the lower surface A fixed plate 50 provided at 52 and connected to the shanghai copper cylinder; The first roller 10 and the first roller 20 and rotatably installed by the pins 11 and 31 at the lower part of the first arm 20 and the second arm 40 having respective flanges 21 and 41 formed thereon. 2 roller 30 is provided so that it can be located on either side of the outer peripheral edge and the inner side of the workpiece; The pin 61 on the third arm 70 having a flange 62 formed on the upper surface with the peripheral end of the workpiece in the opposite direction facing the first roller 10 and the second roller 30. It is achieved by the spinning processing apparatus of the pipe, characterized in that the third roller 60, which is rotatably positioned by means, is positioned on the same line toward the center portion of the space S.

The present invention as described above has the effect of increasing the reliability of the finished product because of the advantage that the processing pressure at the time of processing the thickness of the workpiece is less, while the reduction rate of the workpiece is significantly less.

1 is a plan view showing the installation state of the first to third rollers according to the first embodiment of the present invention with the workpiece formed therebetween;
2 is a side view according to FIG. 1, FIG.
3 is a perspective view of a state in which the fixing plate and the first and second arms according to the present invention are separated;
4 is a perspective view of a state in which the third arm and the second vertical movement cylinder according to the present invention are separated;
5 is an exemplary view illustrating that the positions of the first roller, the second roller, and the third roller according to the present invention are reversed and positioned as in FIG. 1;
6A to 6F are plan views and side cross-sectional views illustrating various types of processing of peripheral edges of various workpieces by selectively installing the first and second embodiments of the present invention with the workpiece molded therebetween.

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

Prior to this, the terms or words used in this specification and claims should not be construed in the ordinary and dictionary sense, and the inventors may appropriately define the concept of terms in order to best explain their invention in the best way possible. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention based on the principle that the present invention.

Therefore, the embodiments described in the present specification and the configuration shown in the drawings are only preferred embodiments of the present invention, and do not represent all of the technical idea of the present invention, and various equivalents may be substituted for them at the time of the present application. It should be understood that there may be variations and examples.

1 is a plan view showing the installation state of the first to third rollers according to the first embodiment of the present invention with the workpiece formed therebetween, FIG. 2 is a side view according to FIG. 1, and FIG. It is a perspective view of the state which isolate | separated the 1st arm and the 2nd arm, and FIG. 4 is a perspective view of the state which isolate | separated the 3rd arm and the 2nd vertical movement cylinder which concerns on this invention.

As can be seen from these figures, the spinning processing apparatus for a pipe according to the present invention includes a first arm 20 provided with the first roller 10 and a second arm 40 provided with the second roller 30. And a fixing plate 50 for fixing the first arm 20 and the second arm 40, and a third arm 70 provided with a third roller 60.

The first roller 10 according to the present invention is provided by the pin 11 so as to be rotatable in the first arm 20, the flange 21 is provided on the upper portion of the first arm 20, the first On one side spaced apart from the first arm 20, the second roller 30 is rotated as a pin 31 on the second arm 40 so that one side opposes one side of the first roller 10 at a constant distance. It is provided so that the flange 41 is provided in the upper part of the 2nd arm 40.

The lower flanges 51 and 52 are provided at regular intervals below the fixed plate 50 according to the present invention, and the upper flange 53 is provided above the fixed plate 50.
The upper flange 53 is connected to the flange 81 and the bolt 82 formed in the vertical movement cylinder 80. Accordingly, the flange 21 is connected to the lower flange 51 as a bolt 22, and the flange 41 is connected to the lower flange 52 by a bolt 42. The first arm 20 and the second arm ( 40 is fixed to the lower portion of the fixed plate 50 is moved up and down by the first vertical cylinder (80).
The first arm 20 and the second arm 40 according to the present invention are loosened and tightened by bolts 22 and 42 connecting the flanges 21 and 41 and the lower flanges 51 and 52. As shown in FIG. 1, one side of the first arm 20 and the second arm 40 may be spaced apart or narrowed.
As shown in FIG. 1, the "-" direction displayed on one side of the flanges 21 and 41 is narrowed so that the gaps between one side of the first arm 20 and the second arm 40 do not contact each other. The "0" direction is more open than the "-" direction, and the "+" direction is more wider than the "0" direction. It may be arbitrarily set by an operator according to the thickness of the workpiece 100 and various processing shapes of the workpiece.

On the other hand, the third roller 60 according to the present invention is installed by the pin 61 in the third arm 70 in which the flange 62 is installed on the upper portion, and the flange 62 is the bolt 63 as the second upper and lower sides. It is connected to the flange 91 of the movable cylinder 90. Here, the shapes of the first to third rollers 10 and 30 and 60 may be formed in various shapes according to the processing shape of the processing molding.

The first roller 10 and the second roller 30 as described above are in the inner and outer periphery of the peripheral end of the workpiece 100 is temporarily fixed on the rotating surface plate (not shown) while being fixed to the lower portion of the fixed plate 50 In the preferred embodiment of the present invention, the third roller 60 is installed inside the tip end of the workpiece 100, and the first to second rollers 10 and 30 are each positioned at either side. It is provided on the outer side of the process molding 100 with the front-end process part of the process molding 100 interposed. Importantly here, as can be seen in Figure 1, the installation position of the third roller 60 is located between the first roller 10 and the second roller 30 positioned between the front end portion of the workpiece 100. Positioning so as to face the center can effectively effect spinning molding of the workpiece formed in the present invention.

The upper end of the 1st vertical movement cylinder 80 and the 2nd vertical movement cylinder 90 which concerns on this invention is installed in the frame (not shown) provided in the expansion and contraction processing apparatus of the conventional pipe | tube, and it is a cylinder rod (not shown). It is connected to the bottom of the housing (not shown) to move left and right from the frame.

In the spinning processing apparatus for a tube according to the present invention configured as described above, the workpiece 100 temporarily fixed on a rotating table (not shown) is welded according to the shape of the workpiece, as in the conventional tube expansion / reduction processing apparatus. After fixing temporarily with bolts and wedges, when the spinning process is completed, disassemble the temporary fixation state and separate it from the turntable. Here, the first roller 10, the second roller 30 and the third roller fixed to the lower portion of the fixed plate 50 according to the thickness of the processing portion of the workpiece 100 to be worked and the shape to be worked molded ( The height and the space | interval of 60 may be adjusted as the 1st up-down moving cylinder 80 and the 2nd up-down moving cylinder 90. FIG.

In this state, the driving of the motor (not shown) is transmitted to the reducer (not shown), and the rotational force is decelerated in the reducer to rotate the rotating table (not shown) at a required speed, thereby temporarily fixing on the rotating table. The processed molding 100 is rotated at the same speed as the rotating table.

In the present invention, as shown in Figure 1, the third roller 60 located inside the workpiece 100 is rotated as the workpiece 100 rotates, the first located outside the workpiece 100 The roller 10 and the second roller 30 are also rotated together with the workpiece 100.
The first roller 10 and the second roller 30 serve to support the peripheral edge of the workpiece 100, that is, the workpiece to be processed, and the third roller 60 forms the peripheral edge of the workpiece 100. do.
As shown in FIG. 1, the installation position of the third roller 60 according to the present invention is centered between the first roller 10 and the second roller 30 provided between the processing portions of the workpiece 100. Since the rollers are positioned opposite to each other, the rollers of the third roller 60, the second roller 30, and the third roller 60 are different from each other on the same line as the conventional rollers face each other. None of the rollers is engaged on the same axis as the third roller 60.
As a result, since the space S is formed by the first to third rollers 10, 30, 60, the processed portions of the workpiece 100 located in the space S are formed at both outer sides of the first to third rollers 10, 30, 60. Supported by the second roller 10, 30, the processing pressure of the third roller 60 is transmitted to the central portion of the processing portion as it is, the processing portion is drawn to the space (S) side, the molding 100 is repeated Rotating makes it easier to spin the workpiece with a smaller machining pressure than in the prior art, while reducing the thickness reduction rate of the workpiece as the machining pressure on the workpiece decreases.

Comparison of required machining pressure and thickness reduction rate (2 rollers, 3 rollers) User material (mm) Cylinder diameter (mmφ) Working pressure (㎏ / ㎠) Processing part after processing
Thickness (mm) Thickness reduction rate (%)
10
150 200 8.5 15 170 9.5 5
20
200 200 17 15 170 19 5
20
300 200 22.5 15 170 28.5 5
※ Result of 15% reduction in processing pressure and 10% reduction in thickness reduction.

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As can be seen in the table above, the possible ranges in which the workpiece 100 can be expanded and shrunk by means of the spinning processing apparatus of the tube according to the invention depend on the material and the thickness.

On the other hand, Figure 5 relates to an exemplary view illustrating that the positions of the first roller, the second roller and the third roller in accordance with the present invention in reverse to the position of Figure 1, and thus, the first roller, the second roller and Even if the position of the third roller is changed, the objects and effects according to the present invention can be sufficiently achieved.

6A to 6F are plan views and side cross-sectional views illustrating various processing forms of peripheral edges of various processing moldings by selecting and installing the first and second embodiments of the present invention with the processing molding interposed therebetween. Since the same reference numerals as in FIGS. 1 to 4 apply, reference numerals are omitted.

As described above, in the spinning apparatus for pipes according to the present invention, two rollers are installed on one side of the inner side and the outer side of the workpiece to be rotated together with the rotary table so that one side thereof faces each other, and the other side has the two By installing one roller so that one side of the roller is opposed to the center of the space of the part facing each other, the processing power is small when processing the thickness of the workpiece, while the reduction rate of thickness is very small, thereby improving the reliability of the finished product. It can increase.

10: first roller,
11: pin,
20: first arm,
21: flange,
22: bolt,
30: second roller,
31: pin,
40: second arm,
41: flange,
42: bolts,
50: fixed plate,
51,52: Lower Flange,
53: upper flange,
60: third roller,
61: pin,
62: flange,
63: bolts,
70: third arm,
80: first up and down cylinder,
81: flange,
82: bolts,
90: second vertical cylinder,
91: flange,
100: processed molding,
S: space

Claims (1)

In the spinning processing apparatus of a tube for forming the peripheral edge of the workpiece molding,
An upper plate 53 protruding from an upper surface thereof, and fixing plates 50 provided with lower flanges 51 and 52 at regular intervals from the lower surface and connected to the shanghai copper cylinder;
The first roller 10 and the first roller 20 and rotatably installed by the pins 11 and 31 at the lower part of the first arm 20 and the second arm 40 having respective flanges 21 and 41 formed thereon. 2 roller 30 is provided so that it can be located on either side of the outer peripheral edge and the inner side of the workpiece;
The pin 61 on the third arm 70 having a flange 62 formed on the upper surface with the peripheral end of the workpiece in the opposite direction facing the first roller 10 and the second roller 30. Spinning apparatus of the pipe, characterized in that the third roller (60) positioned so as to be rotatable by being positioned on the same line toward the center portion of the space (S).

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