KR200269320Y1 - A machine for polishing pipes - Google Patents

Abstract

The present invention relates to a pipe surface polishing apparatus, comprising a frame (3) for supporting a drive motor (2), and a base (7) mounted on the frame so as to be adjustable, and the transmission means (13, 14-16). A polishing machine 4 having a polishing stone 12 rotated by a rotational force from a drive motor of the frame, the base 8 being mounted to the frame 3 so as to be adjustable, and the opposite position of the polishing stone 12. In which the surface is polished by the abrasive stone 12 while being supported and transported by the support roller 32 and the support roller 32 having the support roller 32 to support and transport the pipe 11 to be polished. A pedestal 5 having a support roller 54 to support the pipe 11 from below, and a pedestal 5 fixed to the upper part of the frame 3, and the abrasive stone 12 rotating in contact with the pipe surface in accordance with the bending of the pipe to be polished. Retract the abrasive stone backward to absorb the shock acting on By including the buffer means 26 provided in the grinding machine 4, by absorbing the impact force acting on the abrasive stone 12 when the pipe to be polished is bent to prevent breakage of the abrasive stone, disposed in a position opposite to the abrasive stone There is an advantage that the feed rate of the pipe can be easily adjusted by adjusting the angle of the support roller 32 to rotate while supporting.

Description

Pipe Surface Polishing Machine {A MACHINE FOR POLISHING PIPES}

The present invention relates to a pipe polishing device, in particular for use in connection with the straightness and roundness corrector of the pipe manufactured in the pipe making device, or to smoothly polish the surface of the pipe by itself to improve the prevention of grinding stone damage to the bending of the pipe The present invention relates to a pipe polishing apparatus capable of efficiently performing a polishing operation.

One example of a conventional pipe polishing apparatus is at least one pair for primarily processing and polishing the outer circumferential surface of a pipe while being interviewed on the outer circumferential surface of a pipe conveyed by a conveying means in Korean Patent Application No. 1998-23526 (filed on June 22, 1998). A pipe polishing apparatus is disclosed that includes a main polishing means and a separate auxiliary polishing means installed on the lower side of the base to perform secondary polishing on the outer peripheral surface of the pipe more precisely while being interviewed with the outer peripheral surface of the pipe. .

However, such a polishing apparatus includes a main polishing means and a supplementary polishing means separately, so that the configuration is complicated and the manufacturing cost of the polishing apparatus is high. In particular, the polishing apparatus rotates in contact with the pipe surface by the curved state of the pipe. As the impact force acts on the abrasive stone, there is a problem of premature failure of the abrasive stone.

The object of the present invention is to enable the abrasive stone to maintain constant surface contact force with the pipe surface at all times in order to avoid the problems caused by the conventional pipe polishing apparatus described above, and to apply to the abrasive stone that is in contact with it in the curved state of the pipe to be polished. The present invention provides a polishing apparatus in which a shock absorbing means for automatically adjusting the position of the abrasive stone with respect to the impact force is provided so that premature failure of the abrasive stone does not occur.

Another object of the present invention is to control the feed rate of the pipe to be polished by adjusting the position and placement angle of the support roller and the support roller according to the pipe to be polished, to provide a polishing device that can be easily adjusted to suit the size of the pipe It is.

1 is a schematic side view of a pipe surface polishing apparatus of the present invention.

2 is a right side view of the polishing machine of the present invention polishing device.

Figure 3 is a partially enlarged view showing a pulley structure movably mounted in the shaft portion of the grinder according to the present invention.

Figure 4 is a left side view showing the structure of the support of the present invention polishing apparatus.

Figure 5 is a longitudinal sectional view showing the structure of the support portion of the present invention polishing apparatus.

Explanation of symbols on the main parts of the drawings

3: frame 4: grinding machine

5: support 6: support

7, 8: base 12: abrasive stone

18 housing 21 shaft portion

26: pneumatic cylinder 32: support roller

Polishing apparatus according to the present invention for achieving the above object is a frame for supporting a drive motor, the base is mounted on the frame to be adjustable position and is rotated by the rotational force from the drive motor of the frame through the transmission means Polishing machine having abrasive stone, supporter having a support roller to support the pipe to be polished surface at the opposite position of the abrasive stone, the base being adjustable in the frame, the surface being supported by the abrasive stone while being supported by the support roller A support roller is provided to support the pipe to be polished from below, and a pedestal fixed to the upper part of the frame, and a cushioning means for absorbing the impact acting on the abrasive stone according to the bending of the pipe to be polished when the abrasive stone is used, to protect the abrasive stone. .

The grinder is provided with abrasive stones, a shaft portion for rotating the abrasive stone, a bearing assembly for rotatably supporting the shaft portion, a base plate slidably mounted on the upper surface of the frame, spaced apart from each other and provided with shaft portions between the plate plates. A first support, a second support adjacent to both sides of the first support, are pivotally disposed on the shaft and support the abrasive stone and its rotating shaft assemblies, the second support being supported by the first support and the leading end of the piston being supported by the abrasive stone. And a cylinder as a cushioning means connected to the rotating shaft assembly to absorb the impact applied to prevent damage, wherein the piston rod end of the cylinder is connected to the bearing assembly case to prevent the impact applied to the abrasive stone by the bending of the pipe to be polished. Abrasive stone breakage by causing piston rod to retract It is prevented.

The support portion includes a support roller for supporting the pipe to be polished at a position opposite to the abrasive stone, a first support plate fixed to a base slidably mounted on an upper surface of the frame, and a positionally connected to the first support plate, And a second support plate for supporting the drive motor connected by the transmission means, wherein at least one arc-shaped slot is formed in the first support plate so that the feed rate of the pipe to be polished can be adjusted by adjusting the inclination of the support roller. .

In addition, the pedestal is disposed in contact with the first support plate and the outer surface of each of the first support plate fixed to be spaced apart from each other on the upper surface of the frame, a fastening hole of the long hole form is formed to increase the fastening height to the first support plate It is preferable that it is comprised so that adjustment of the height of the support roller supported by the bottom of a pipe according to the kind of pipe to be polished may be carried out.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings showing an embodiment of the present invention.

The polishing apparatus 1 according to the present invention shown in side view in FIG. 1 supports a polishing machine 4 for polishing a pipe surface and a pipe to be polished on a frame 3 having a driving motor 2 below. A support 5 for supporting the pipe to be polished at a position opposite to the polishing machine.

The bases 7 and 8 of the grinding machine 4 and the support 6 are slidably mounted on the upper surface of the frame so that only one is shown on the left side in FIG. As it rotates, the screw and the lower ends of the respective base parts 7 and 8 are engaged with each other to move and adjust the position. However, the pedestal 5 which supports the pipe 11 to be polished from below is adapted to adjust the height with respect to the abrasive stone 12 of the grinder 4 according to the size of the pipe.

The grinding machine (4) is of the shaft portion 17 that is rotated by a transmission means consisting of a belt 13 and pulleys (14, 15, 15 ', 16) for transmitting the rotational force from the drive motor (2) of the frame It is provided with a polished stone 12 is fixed to the leading end portion, the shaft portion 17 is rotatably supported by a conventional bearing assembly embedded in the housing (18).

The grinding machine 4 has a shaft portion spaced apart from each other and fixed between the two plates in a base 7 slidably mounted on the upper surface of the frame 3, as shown in partial cross-sectional view in FIG. A first support 22 composed of 21 and adjacent side plates 20 of the first support 22 to be pivotally disposed at the shaft portion 21 to rotate the abrasive stone. And a second support 24 which is fixedly supported in a housing 18 for receiving a bearing assembly for the shaft portion 17 therefor.

The first support 22 is also provided with a pneumatic cylinder 26 mounted on a rearwardly extending flange 25 as abrasive stone cushioning means, the end of the piston rod of the cylinder connecting with the bearing assembly housing 18. When the pipe to be polished is curved, the housing 18, which receives the bearing assembly together with the abrasive stone when the impact force acts on the abrasive stone that rotates in contact with the surface of the pipe to polish the surface, causes the piston rod to retract with the housing. In addition, the second support part 24 is rotated clockwise from the shaft portion 21, and the abrasive stone is also rotated clockwise so that the abrasive stone retreats to prevent breakage of the abrasive stone.

Furthermore, by setting a predetermined pressure in advance to the pneumatic cylinder 26, the housing and the abrasive stone connected to the piston rod are always in contact with the pipe surface at a predetermined constant pressure on the pipe so that the pipe may not be worn even when the abrasive stone wears during polishing of the surface of the pipe. Surface polishing can be performed smoothly. In this case, it is preferable to limit the rotation of the abrasive stone toward the pipe, and for this purpose, a conventional stopper is preferably provided on the shaft portion 21 to limit the rotation of the second support portion.

In this way, when the bearing assembly housing 18 is rotated within a predetermined range by the pneumatic cylinder 26, the pulley 16 for receiving the rotational force of the drive motor is also rotated together so that the position of the intermediate pulley 15 ' There is a risk that the belt 13 will disengage from the pulleys as it changes, to counteract this as the position of the pulley 16 changes with the bearing assembly housing for cushioning. By being movably disposed on (27), the relative displacement with the pulley 16 is reduced to prevent the belt from being detached (see FIG. 3). The shaft portion 27 is rotatably supported in the cap 28.

In addition, the support part 6 can adjust the position of the second support plate 33 relative to the first support plate 31 fixed to the base 8 slidably mounted on the upper surface of the frame as shown in FIG. 4. The support roller 32 is rotatably mounted on the front surface of the second support plate 33, and is configured to rotate the support roller 32 by a drive motor 30 mounted on the horizontal top. It is.

In this way, the support roller 32 made of rubber material is rotated through the belt by the drive motor 30 to support the pipe 11 to be polished at the position opposite to the abrasive stone 12 to support the pipe against the abrasive stone. In addition, the support roller 32 is rotated in contact with the pipe 11 to be polished. The support roller 32 is configured to increase in diameter to one end side as shown by an imaginary line in FIG. It can be adjusted to control the pipe feed rate. That is, an arc-shaped slot 34 is formed in the first support plate 31 so that the bolt 34 from the second support plate 33 is moved from right to left at the position shown in FIG. 5 in the slot 34. When the support roller 32 is rotated to the left side and the second support plate 33 is inclined to the left side, the support roller 32 mounted on the second support plate 33 is inclined so that the rotation of the support roller 32 in the clockwise direction is performed. The horizontal force acting on the contacted pipe 11 is increased to increase the feed speed. That is, as the feed speed of the pipe 11 is changed depending on the inclination of the support roller 32 in contact with the pipe, together with the rotational speed of the drive motor 30, the second support plate for the first support plate 31 ( By adjusting the arrangement angle of 33, the feed rate of the pipe can be easily controlled.

FIG. 5 is a cross-sectional view of the structure of the pedestal 5 supporting the pipe 11 to be polished. In the upper surface of the frame 3, the first supporting plates 50 are spaced apart from each other and fixed to each other. The second support plates 51 are mounted to the 50 so as to be height adjustable. That is, the long support 52 is formed in the second support plate 51 in the longitudinal direction so that the height of the support roller 54 mounted on the upper part of the second support plate 51 according to the fastening position of the fixing bolt 53 is increased. It can be adjusted easily. The height of the support roller 54 is suitably adjusted together with the height adjustment of the abrasive stone 12 and the support roller 32 opposed thereto according to the size of the pipe 11 to be polished, that is, the size. The support roller 54 is supported by a bearing to be idle at the upper end of the second support plate 51 may be transported while rotating the grinding stone and the pipe in contact with the support roller.

Pipe polishing operation in the polishing apparatus according to the present invention will be briefly described. First, the pipe having the roundness corrected by the pipe straightener is placed on the support roller 11 to adjust the height, and then, by rotating the adjusting handle 55 according to the pipe diameter, the grinder 4 and the support part engaged with the screw ( 6) move the bases 7 and 8 to an appropriate position, adjust the inclination of the support roller 32 of the support 6 to suit the required feed rate of the pipe to be polished, and contact the pipe surface. The driving rollers are operated in a state where the contact state of the abrasive stone is appropriately adjusted by the set pressure adjustment of the pneumatic cylinder 26, thereby rotating the abrasive stone 12 and the support roller 32 opposite thereto, thereby rotating the support roller 32 horizontally. Due to the force of the pipe, the pipe rotates and moves on the support roller. At this time, the surface of the pipe in contact with the abrasive stone 12 is polished, and the pipe is subjected to the abrasive stone in contact with the curved portion. As the bearing assembly housing 18 for supporting the abrasive stone is rotated rearward from the shaft portion 21 together with the second support portion 24 by the force, the impact force is absorbed to safely and effectively perform the pipe polishing operation without breaking the abrasive stone. .

According to the present invention, both side plates 23 of the second support portion 24 supported by the bearing assembly housing 18 together with the abrasive stone of the polishing machine are rotatably mounted on the shaft portion 21, and the pneumatic cylinder 25 as a shock absorbing means is provided. When the pipe to be polished is connected to the housing 18 and the pipe to be polished is bent, the housing 18 may retreat backward by the impact force acting on the abrasive stone 12 to polish the surface while rotating in contact with the surface thereof. It is possible to prevent the breakage of the abrasive stone, and the abrasive pressure is always in constant contact with the surface of the pipe by the set pressure of the pneumatic cylinder (25) to ensure a safe and effective surface polishing of the pipe despite the wear of the abrasive stone in the polishing process It can be carried out, by adjusting the angle of the support roller 32 that is rotated while supporting and disposed at a position opposite to the abrasive stone to easily adjust the feed speed of the pipe It has the advantage that you can.

Claims (4)

The frame 3 supporting the drive motor 2 and the base 7 are mounted on the frame so as to be adjustable, and are rotated by the rotational force from the drive motor of the frame through the transmission means 13 and 14-16. A grinder 4 having a rotating abrasive stone 12, a base 8 mounted on the frame 3 so as to be adjustable, and supporting a pipe 11 for polishing a surface at an opposite position of the abrasive stone 12. And a support roller 6 having a support roller 32 so as to be transported and supported by the support roller 32 to support the pipe 11 whose surface is polished by the abrasive stone 12 while being supported by the support roller 32. 54, having a pedestal 5 fixed to the upper part of the frame 3, and the abrasive stone rearward to absorb the impact acting on the rotating abrasive stone 12 in contact with the pipe surface in accordance with the bending of the pipe to be polished. And cushioning means (26) provided on the grinder (4) to retract. Pipe surface polishing apparatus. 2. The polishing machine (4) according to claim 1, wherein the grinder (4) comprises a polished stone (12), a housing (18) and a frame (3) containing a shaft portion (17) for rotating the polished stone and a bearing assembly for rotatably supporting the shaft portion. In the base 7 slidably mounted on the upper surface, both side plates 20 are fixed and spaced apart from each other, and the first support part 22 provided with the shaft portion 21 between the two side plates, and both side plates 20 of the first support part. Adjacent to the field, the two side plates 23 are rotatably arranged in the shaft portion 22 and support the housings 18 containing the abrasive stone 12 and the bearing assembly of the shaft portion 17. And a pneumatic cylinder 26, which is supported by the first support part 22 and connected to a housing 18 for receiving the rotary shaft assembly to absorb the shock applied to the abrasive stone to prevent damage. Pipe surface polishing apparatus, characterized in that. A support roller 32 and a base slidably mounted on an upper surface of the frame 3 according to claim 1, wherein the support part 6 supports and transports the pipe 11 to be polished at a position opposite to the abrasive stone 12. A second support plate (33) fixed to (8) and a second support plate (33) for supporting a drive motor (30) connected to the first support plate and positionally adjustable and connected to the support roller (32) by means of transmission; At least one arc-shaped slot 34 is formed in the first support plate 31 to adjust the inclination of the support roller 32 so as to adjust the feed rate of the pipe by the horizontal component of the support roller which rotates. Pipe surface grinding apparatus characterized in that configured to be. According to claim 1, wherein the pedestal (5) is arranged in contact with the outer surface of each of the first support plate 50 and the first support plate 50 fixed to be spaced apart from each other on the upper surface of the frame (3) The second support plate 51 and the support roller is rotatably mounted on the second support plate 51 to form a long hole 52 for adjusting the fastening height with respect to the first support plate (50) ( 54. A pipe surface polishing apparatus comprising: 54).