Pipe bending machine

Abstract

The utility model relates to the technical field of installation construction, aims to solve the problem of how to improve the precision of the bent angle of a pipe, and provides a pipe bending machine. The pipe bending machine is used for bending a pipe, the pipe comprises a head end, a bending part and a tail end which are connected in sequence, and the pipe bending machine comprises a seat piece, a first limiting piece, a second limiting piece, a measuring piece and a jacking piece. The measuring piece comprises a first measuring rod, a second measuring rod and an angle gauge, one end of the first measuring rod is rotatably arranged on the angle gauge, the other end of the first measuring rod extends to one side, opposite to the first limiting piece, of the head end, one end of the second measuring rod is rotatably arranged on the angle gauge, and the other end of the second measuring rod extends to one side, opposite to the first limiting piece, of the tail end; the pressing block can be stressed to abut against the bending part of the pipe to bend the pipe, the head end abuts against the first measuring rod to rotate, the tail end abuts against the second measuring rod to rotate, and therefore the angle gauge measures the rotating angle of the first measuring rod and the rotating angle of the second measuring rod, and the angle gauge detects the bending angle of the pipe. Therefore, the effect of improving the precision of the bent angle of the pipe is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of installation and construction, and in particular to a pipe bending machine. Background Art

[0002] In electrical grounding installation and construction, steel pipes usually need to be bent to make elbows with various bending angles so that the steel pipes can be installed and used in accordance with the environment.

[0003] In the prior art, when bending steel pipes, due to factors such as manual inexperience, the steel pipes may be bent at wrong angles, resulting in material waste. How to solve the above technical problems is what those skilled in the art need to consider. Utility Model Content

[0004] The present application provides a pipe bending machine to solve the problem of how to improve the accuracy of the angle at which the pipe is bent.

[0005] An embodiment of the present application provides a pipe bending machine for bending a pipe, wherein the pipe includes a head end, a bending part and a tail end connected in sequence, and the pipe bending machine includes a seat, a first limiter, a second limiter, a measuring part and a top pressure part. The first limiter is fixed to the seat, and the first limiter corresponds to the head end of the pipe. The second limiter is fixed to the seat and is spaced apart from the first limiter, and the second limiter corresponds to the tail end of the pipe. The top pressure part includes a pressing block, and the pressing block is movably arranged between the first limiter and the second limiter, the first limiter and the second limiter are arranged on the same side of the pipe, and the pressing block is arranged on the side of the pipe opposite to the first limiter and the second limiter. The measuring part includes a first measuring rod, a second measuring rod and an inclinometer, one end of the first measuring rod is rotatably arranged on the inclinometer, and the other end extends to the side of the head end opposite to the first limit member, one end of the second measuring rod is rotatably arranged on the inclinometer, and the other end extends to the side of the tail end opposite to the first limit member, the pressing block can be subjected to force to press against the bending part of the pipe to bend the pipe, and the head end presses against the first measuring rod to rotate, and the tail end presses against the second measuring rod to rotate so that the inclinometer measures the bending angle of the pipe.

[0006] Compared with the prior art, the pipe bending machine provided in this embodiment uses a first limit member to support the head end of the pipe, a second limit member to support the tail end of the pipe, and a pressure block to support the bending part of the pipe to bend the pipe. During the bending process of the pipe, the head end moves and presses against the first measuring rod to rotate the first measuring rod relative to the inclinometer, and the tail end moves and presses against the second measuring rod to rotate the second measuring rod relative to the inclinometer, so that the inclinometer measures the rotation angle of the first measuring rod and the second measuring rod. Therefore, the inclinometer detects the bending angle of the pipe at all times during the bending process of the pipe, and the changes in the inclinometer are observed at any time to improve the accuracy of the bending angle of the pipe.

[0007] In a possible implementation, the first measuring rod includes a first rotating rod and a first vertical rod, the first rotating rod is arranged along the horizontal direction, the first vertical rod is arranged along the vertical direction, one end of the first rotating rod is rotatably connected to the inclinometer, and the other end is connected to the first vertical rod. The second measuring rod includes a second rotating rod and a second vertical rod, the second rotating rod is arranged along the horizontal direction, the second vertical rod is arranged along the vertical direction, one end of the second rotating rod is rotatably connected to the inclinometer, and the other end is connected to the second vertical rod.

[0008] In a possible embodiment, the seat also includes a base plate, a connecting plate and a cover plate, the base plate and the cover plate are spaced apart, one end of the connecting plate is fixedly connected to the base plate and the other end is hinged to the cover plate, the pressure block is movably arranged on the connecting plate, the first limiting member and the first limiting member are arranged between the base plate and the cover plate, and the inclinometer is fixed to the cover plate.

[0009] In a possible implementation, the cover plate is provided with a first positioning hole, the bottom plate is provided with a second positioning hole, the first positioning hole corresponds to the second positioning hole in a vertical direction, and one end of the first limiting member is provided in the first positioning hole and the other end is provided in the second positioning hole.

[0010] In a possible implementation, a plurality of the first positioning holes are provided, and a plurality of the second positioning holes are provided, and the first positioning holes correspond to the second positioning holes one by one.

[0011] In a possible implementation manner, the pressing member further includes a hydraulic cylinder, the pressing block is telescopically connected to the hydraulic cylinder, and the hydraulic cylinder is used to drive the pressing block to move telescopically.

[0012] In a possible implementation manner, the pressing member further includes a pressing rod, the pressing rod is connected to the hydraulic cylinder, and the pressing rod is used to squeeze the liquid in the hydraulic cylinder to drive the pressing block to move.

[0013] In a possible implementation, the circumferential surface of the first limiting member is recessed to form a first annular surface, the first annular surface corresponds to the head end of the tube, the circumferential surface of the second limiting member is recessed to form a second annular surface, the second annular surface corresponds to the end of the tube, and the surface of the pressing block is recessed to form an arc surface, the arc surface corresponds to the bending portion of the tube so that the bending portion bends around the arc surface.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0015] 1. The pipe bender uses a pressing block to press against the bending part of the pipe so that the pipe is bent. During the bending process of the pipe, the head end moves and presses against the first measuring rod to rotate the first measuring rod relative to the inclinometer, and the tail end moves and presses against the second measuring rod to rotate the second measuring rod relative to the inclinometer, so that the inclinometer measures the rotation angle of the first measuring rod and the second measuring rod. Therefore, the inclinometer constantly detects the bending angle of the pipe during the bending process, and the change of the inclinometer is observed at any time to improve the accuracy of the bending angle of the pipe.

[0016] 2. The pipe bending machine squeezes the liquid in the hydraulic cylinder through the pressure rod to drive the pressure block to move. The output of the hydraulic cylinder is stable and the output force is large. The pressure rod is easy to operate and it is easy to control the movement of the pressure block, so that the pressure block can steadily press against the pipe, and the pipe is evenly stressed, so as to achieve the effect of improving the accuracy of the angle of the pipe bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A three-dimensional diagram of a pipe bending machine according to an embodiment of the present application;

[0019] Figure 2 for Figure 1 A three-dimensional view of the pipe bending machine in the open state;

[0020] Figure 3 for Figure 2 The left side view of the pipe bending machine;

[0021] Figure 4 for Figure 2 Front view of the pipe bending machine.

[0022] Description of main component symbols:

[0023] 1. Pipe bending machine; 11. Seat; 111. Bottom plate; 112. Connecting plate; 113. Cover plate; 114. First positioning hole; 115. Second positioning hole; 116. Third positioning hole; 117. Fourth positioning hole; 12. First stopper; 121. First annular surface; 122. First cylindrical pin; 123. Second cylindrical pin; 13. Second stopper; 131. Second annular surface; 14. Measuring member; 141. First measuring rod; 142. First rotating rod; 143. First vertical rod; 144. Second measuring rod; 145. Second rotating rod; 146. Second vertical rod; 147. Angle meter; 15. Pressing member; 151. Pressing block; 152. Arc surface; 153. Hydraulic cylinder; 154. Pressing rod. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0025] Some embodiments of the present application are described in detail. In the absence of conflict, the following embodiments and features of the embodiments can be combined with each other.

[0026] Example

[0027] See also Figures 1 to 4As shown, this embodiment provides a pipe bending machine 1 for bending a pipe, wherein the pipe includes a head end, a bending part and a tail end connected in sequence, and the bending part is located between the head end and the tail end. The pipe bending machine 1 includes a seat 11, a first stopper 12, a second stopper 13, a measuring part 14 and a top pressure part 15. The first stopper 12 is fixed to the seat 11, and the first stopper 12 corresponds to the head end of the pipe. The second stopper 13 is fixed to the seat 11 and is spaced apart from the first stopper 12, and the second stopper 13 corresponds to the tail end of the pipe. The top pressure part 15 includes a pressing block 151, and the pressing block 151 is movably arranged between the first stopper 12 and the second stopper 13, the first stopper 12 and the second stopper 13 are arranged on the same side of the pipe, and the pressing block 151 is arranged on the side of the pipe opposite to the first stopper 12 and the second stopper 13. The measuring member 14 includes a first measuring rod 141, a second measuring rod 144 and an inclinometer 147. One end of the first measuring rod 141 is rotatably disposed on the inclinometer 147, and the other end extends to the side of the head end opposite to the first limit member 12. One end of the second measuring rod 144 is rotatably disposed on the inclinometer 147, and the other end extends to the side of the tail end opposite to the first limit member 12. The pressing block 151 can be subjected to force to press against the bending portion of the pipe to bend the pipe, and the head end presses against the first measuring rod 141 to rotate, and the tail end presses against the second measuring rod 144 to rotate so that the inclinometer 147 measures the bending angle of the pipe.

[0028] The pipe bending machine 1 provided in this embodiment uses the first limit member 12 to support the head end of the pipe, the second limit member 13 to support the tail end of the pipe, and the pressure block 151 to press against the bending part of the pipe to bend the pipe. During the bending process of the pipe, the head end moves and presses against the first measuring rod 141 to rotate the first measuring rod 141 relative to the inclinometer 147, and the tail end moves and presses against the second measuring rod 144 to rotate the second measuring rod 144 relative to the inclinometer 147, so that the inclinometer 147 measures the rotation angle of the first measuring rod 141 and the second measuring rod 144. Therefore, the inclinometer 147 detects the bending angle of the pipe at all times during the bending process of the pipe, and the accuracy of the bending angle of the pipe is improved by observing the changes of the inclinometer 147 at any time.

[0029] In this embodiment, the angle meter 147 may be an electronic angle meter 147, which displays the angle change of the pipe bending by sensing the rotation angle of the first measuring rod 141 and the second measuring rod 144. The angle meter 147 may also mark scales on the surface, and calculate the angle change of the pipe bending by observing the scale changes corresponding to the first measuring rod 141 and the second measuring rod 144. This embodiment is not limited to the way the angle meter 147 expresses angles.

[0030] In a possible implementation, the first measuring rod 141 includes a first rotating rod 142 and a first vertical rod 143, wherein the first rotating rod 142 is arranged in the horizontal direction, the first vertical rod 143 is arranged in the vertical direction, one end of the first rotating rod 142 is rotatably connected to the inclinometer 147, and the other end is connected to the first vertical rod 143. The second measuring rod 144 includes a second rotating rod 145 and a second vertical rod 146, wherein the second rotating rod 145 is arranged in the horizontal direction, the second vertical rod 146 is arranged in the vertical direction, one end of the second rotating rod 145 is rotatably connected to the inclinometer 147, and the other end is connected to the second vertical rod 146.

[0031] In this embodiment, the head end of the pipe is disposed between the first vertical rod 143 and the first stopper 12, one side surface of the head end of the pipe is in contact with the first stopper 12, and the other side surface is in contact with the first vertical rod 143; the end of the pipe is disposed between the second vertical rod 146 and the second stopper 13, one side surface of the end of the pipe is in contact with the second stopper 13, and the other side surface is in contact with the second vertical rod 146. When the pipe bending machine 1 performs a bending operation, the pressing block 151 presses against the bending portion of the pipe, the first stopper 12 presses against the head end of the pipe, and the second stopper 13 presses against the end of the pipe, so that the pipe is bent.

[0032] During the bending process of the pipe, the head end moves and presses against the movement of the first vertical rod 143, and the first vertical rod 143 drives the first rotating rod 142 to rotate relative to the inclinometer 147; the tail end moves and presses against the movement of the second vertical rod 146, and the second vertical rod 146 drives the second rotating rod 145 to rotate relative to the inclinometer 147, so that the inclinometer 147 measures the rotation angle of the first rotating rod 142 and the second rotating rod 145. By observing the changes of the inclinometer 147 at any time, the accuracy of the bending angle of the pipe can be improved.

[0033] In a possible embodiment, the seat member 11 also includes a base plate 111, a connecting plate 112 and a cover plate 113, the base plate 111 and the cover plate 113 are spaced apart, one end of the connecting plate 112 is fixedly connected to the base plate 111, and the other end is hinged to the cover plate 113, the pressing block 151 is movably arranged on the connecting plate 112, the first limiting member 12 and the first limiting member 12 are arranged between the base plate 111 and the cover plate 113, and the inclinometer 147 is fixed to the cover plate 113.

[0034] In this embodiment, the connecting plate 112 is hinged to the cover plate 113 , and the pipe can be taken in and out by opening the cover plate 113 , or the pipe can be bent by closing the cover plate 113 .

[0035] The inclinometer 147 is fixed to the cover plate 113 so that the angle value displayed by the inclinometer 147 can be observed to improve the accuracy of the angle at which the pipe is bent.

[0036] In a possible embodiment, the cover plate 113 is provided with a first positioning hole 114, and the bottom plate 111 is provided with a second positioning hole 115. The first positioning hole 114 corresponds to the second positioning hole 115 along the vertical direction, and one end of the first limiting member 12 is provided in the first positioning hole 114 and the other end is provided in the second positioning hole 115.

[0037] In this embodiment, one end of the first stopper 12 has a protruding first cylindrical pin 122, and the other end has a protruding second cylindrical pin 123. The first cylindrical pin 122 is inserted into the first positioning hole 114, and the second cylindrical pin 123 is inserted into the second positioning hole 115, so that the first stopper 12 is fixed between the cover plate 113 and the bottom plate 111. In the same way, the cover plate 113 is provided with a third positioning hole 116, and the bottom plate 111 is provided with a fourth positioning hole 117. The third positioning hole 116 corresponds to the fourth positioning hole 117 along the vertical direction. One end of the second stopper 13 is arranged in the third positioning hole 116, and the other end is arranged in the fourth positioning hole 117. The second stopper 13 is fixed between the cover plate 113 and the bottom plate 111 through the third positioning hole 116 and the fourth positioning hole 117.

[0038] In a possible implementation, a plurality of the first positioning holes 114 are provided, and a plurality of the second positioning holes 115 are provided, and the first positioning holes 114 correspond to the second positioning holes 115 one by one.

[0039] A plurality of first positioning holes 114 are arranged at intervals, a plurality of second positioning holes 115 are arranged at intervals, and the first stopper 12 is fixed to the first positioning holes 114 and the second positioning holes 115 at different positions to change the position of the first stopper 12; in the same way, a plurality of third positioning holes 116 are provided, a plurality of fourth positioning holes 117 are provided, and the second stopper 13 is fixed to the third positioning holes 116 and the fourth positioning holes 117 at different positions to change the position of the second stopper 13. By changing the positions of the first stopper 12 and the second stopper 13, pipes of different diameters can be adapted, thereby improving the accuracy of the angle at which the pipe is bent.

[0040] In a possible implementation manner, the pressing member 15 further includes a hydraulic cylinder 153 , and the pressing block 151 is telescopically connected to the hydraulic cylinder 153 , and the hydraulic cylinder 153 is used to drive the pressing block 151 to move telescopically.

[0041] In this embodiment, the hydraulic cylinder 153 has a stable output and a large output force. The hydraulic cylinder 153 outputs stably and continuously so that the pressure block 151 can steadily press against the pipe, and the pipe is evenly stressed, which is beneficial to improving the bending accuracy of the pipe and improving the accuracy of the bending angle of the pipe.

[0042] In a possible implementation manner, the pressing member 15 further includes a pressing rod 154 , wherein the pressing rod 154 is connected to the hydraulic cylinder 153 , and the pressing rod 154 is used to squeeze the liquid in the hydraulic cylinder 153 to drive the pressing block 151 to move.

[0043] In this embodiment, the pressure rod 154 is helpful for saving the operator's effort through the lever principle, so that the operator can operate the pipe bending machine 1 to perform pipe bending operations, thereby improving the accuracy of the angle of the pipe being bent.

[0044] In a possible implementation, the circumferential surface of the first limiting member 12 is recessed to form a first annular surface 121, and the first annular surface 121 corresponds to the head end of the tube; the circumferential surface of the second limiting member 13 is recessed to form a second annular surface 131, and the second annular surface 131 corresponds to the end of the tube; the surface of the pressing block 151 is recessed to form an arc surface 152, and the arc surface 152 corresponds to the bending portion of the tube so that the bending portion bends around the arc surface 152.

[0045] In this embodiment, the pipe bender 1 corresponds to the pipe through the arc surface 152 so that the bending part of the pipe bends around the arc surface 152, and the surface of the bending part fits with the arc surface 152, thereby improving the bending accuracy of the bending part of the pipe; the first annular surface 121 corresponds to the head end of the pipe and fits with the surface of the head end, and the second annular surface 131 corresponds to the end of the pipe and fits with the surface of the end, thereby improving the position accuracy of the head end and the end during the bending process, thereby improving the position accuracy of the first vertical rod 143 and the second vertical rod 146, and improving the measurement accuracy of the angle meter 147, so as to improve the accuracy of the angle of the pipe bending. At the same time, the peripheral surface of the pipe fits with the pipe bender 1 to reduce the surface damage of the pipe, so the surface of the pipe is less damaged during the bending process.

[0046] When the pipe bending machine 1 is in use, the cover plate 113 is first opened, the head end of the pipe is placed on the first annular surface 121, the tail end of the pipe is placed on the second annular surface 131, and the pressure rod 154 is pressed to make the hydraulic cylinder 153 drive the pressure block 151 to move to a position in contact with the bending part of the pipe to pre-press the pipe. Then the cover plate 113 is closed, the first cylindrical pin 122 of the first limiter 12 is inserted into the first positioning hole 114 to fix the first limiter 12 between the cover plate 113 and the bottom plate 111, and the second limiter 13 is fixed between the cover plate 113 and the bottom plate 111 through the third positioning hole 116 and the fourth positioning hole 117; and the first vertical rod 143 contacts the head end of the pipe, the second vertical rod 146 contacts the tail end of the pipe, and the angle value of the angle meter 147 is reset to zero. Continue to press the pressure rod 154 to make the hydraulic cylinder 153 drive the pressure block 151 to press against the bending part of the pipe to bend the pipe, and observe the angle value of the angle meter 147. When the appropriate angle value is reached, stop pressing the pressure rod 154, and the pipe is bent to a suitable angle.

[0047] In summary, the pipe bending machine 1 uses the pressing block 151 to press against the bending part of the pipe so that the pipe is bent. During the bending process of the pipe, the head end moves and presses against the first measuring rod 141 so that the first measuring rod 141 rotates relative to the inclinometer 147, and the tail end moves and presses against the second measuring rod 144 so that the second measuring rod 144 rotates relative to the inclinometer 147, so that the inclinometer 147 measures the rotation angle of the first measuring rod 141 and the second measuring rod 144. Therefore, the inclinometer 147 detects the bending angle of the pipe at all times during the bending process of the pipe, and the change of the inclinometer 147 is observed at any time to improve the accuracy of the angle of the pipe being bent. The pipe bending machine 1 uses the pressing rod 154 to squeeze the liquid in the hydraulic cylinder 153 to drive the pressing block 151 to move. The output of the hydraulic cylinder 153 is stable and the output force is large. The pressing rod 154 is easy to operate and it is easy to control the travel of the pressing block 151, so that the pressing block 151 presses against the pipe stably, and the pipe is evenly stressed to improve the accuracy of the angle of the pipe being bent.

[0048] The above implementation modes are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the above preferred implementation modes, a person skilled in the art should understand that the technical solutions of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A pipe bending machine for bending a pipe, wherein the pipe comprises a head end, a bending portion and a tail end connected in sequence, characterized in that: The pipe bending machine comprises: Seat piece; A first stopper, fixed to the seat, the first stopper corresponding to the head end of the pipe; a second stopper, fixed to the seat and spaced apart from the first stopper, the second stopper corresponding to an end of the pipe; A pressing member, comprising a pressing block, wherein the pressing block is movably disposed between the first limiting member and the second limiting member, the first limiting member and the second limiting member are disposed on the same side of the pipe, and the pressing block is disposed on a side of the pipe opposite to the first limiting member and the second limiting member; The measuring member comprises a first measuring rod, a second measuring rod and an inclinometer, wherein one end of the first measuring rod is rotatably arranged on the inclinometer, and the other end extends to the side of the head end opposite to the first limit member, and one end of the second measuring rod is rotatably arranged on the inclinometer, and the other end extends to the side of the tail end opposite to the first limit member, the pressing block can be subjected to force to press against the bending part of the pipe to bend the pipe, and the head end presses against the first measuring rod to rotate, and the tail end presses against the second measuring rod to rotate so that the inclinometer measures the bending angle of the pipe.

2. The pipe bending machine according to claim 1, characterized in that: The first measuring rod comprises a first rotating rod and a first vertical rod, the first rotating rod is arranged along the horizontal direction, the first vertical rod is arranged along the vertical direction, one end of the first rotating rod is rotatably connected to the inclinometer, and the other end of the first rotating rod is connected to the first vertical rod; The second measuring rod includes a second rotating rod and a second vertical rod, the second rotating rod is arranged along the horizontal direction, the second vertical rod is arranged along the vertical direction, one end of the second rotating rod is rotatably connected to the inclinometer, and the other end is connected to the second vertical rod.

3. The pipe bending machine according to claim 1, characterized in that: The seat also includes a base plate, a connecting plate and a cover plate, the base plate and the cover plate are spaced apart, one end of the connecting plate is fixedly connected to the base plate, and the other end is hinged to the cover plate, the pressing block is movably arranged on the connecting plate, the first limiting member and the first limiting member are arranged between the base plate and the cover plate, and the inclinometer is fixed to the cover plate.

4. The pipe bending machine according to claim 3, characterized in that: The cover plate is provided with a first positioning hole, the bottom plate is provided with a second positioning hole, the first positioning hole corresponds to the second positioning hole along the vertical direction, and one end of the first limiting member is provided in the first positioning hole, and the other end is provided in the second positioning hole.

5. The pipe bending machine according to claim 4, characterized in that: There are a plurality of the first positioning holes, and there are a plurality of the second positioning holes, and the first positioning holes correspond to the second positioning holes one by one.

6. The pipe bending machine according to claim 1, characterized in that: The pressing member further comprises a hydraulic cylinder, the pressing block is telescopically connected to the hydraulic cylinder, and the hydraulic cylinder is used to drive the pressing block to move telescopically.

7. The pipe bending machine according to claim 6, characterized in that: The pressing member further comprises a pressing rod, which is connected to the hydraulic cylinder and is used for squeezing the liquid in the hydraulic cylinder to drive the pressing block to move.

8. The pipe bending machine according to claim 1, characterized in that: The circumferential surface of the first limiting member is recessed to form a first annular surface, and the first annular surface corresponds to the head end of the tube. The circumferential surface of the second limiting member is recessed to form a second annular surface, and the second annular surface corresponds to the end of the tube. The surface of the pressing block is recessed to form an arc surface, and the arc surface corresponds to the bending portion of the tube so that the bending portion bends around the arc surface.

Images