Handheld pipe bending machine
By introducing a linkage structure of angle plate and zero positioning parts into the handheld pipe bending machine, combined with magnetic steel and Hall sensing control, the problem that existing pipe bending machines cannot accurately bending angle is solved, and precise control and automatic stop of pipe bending angle is achieved.
Patent Information
- Application Number
- CN202422405015.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-03
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-10-03
AI Technical Summary
Existing pipe bending machines cannot achieve accurate automated bending operations, and the bending angle mainly depends on empirical judgment.
A hand-held pipe bending machine is designed, which adopts a combined structure of main frame, gears, angle disc, zero positioning parts, magnet steel, Hall sensing, pipe bending plate, bent rod and fixed seat. Through the linkage of angle disc and zero positioning parts, the motor stop is controlled by magnet steel and Hall sensing to ensure the accuracy of the bent angle.
The precise determination of the angle of the bend is achieved, ensuring the accuracy of the bend operation and automatic stop, and improving the accuracy of the pipe bending machine.
Smart Images
Figure CN223185272U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a pipe bending tool, in particular to a pipe bending machine which can accurately determine the pipe bending angle. Background Art
[0002] A pipe bender is a type of pipe bending tool. Currently, there are various types of pipe bender, including fixed-frame types and handheld types. The fixed-frame type is driven by AC power, while the handheld type is driven by lithium batteries. Currently, the bending angles of the pipes of these types of machines are basically determined by experience, and precise automation cannot be achieved for bending operations. Utility Model Content
[0003] The utility model aims to provide a handheld pipe bender, and solves the technical problem of designing a pipe bender capable of accurately determining the bending angle.
[0004] The handheld pipe bender includes a main frame, gears, an angle disc, a zero-position positioning piece, a magnet, a Hall sensor, a pipe bending disc, a pipe bending rod, and a fixed seat; the gear shaft is connected to the main frame, the pipe bending disc and the zero-position positioning piece are fixed on the gear from top to bottom and rotate with the gear, the pipe bending disc has an arc-shaped cavity that cooperates with the pipe to be bent, the angle disc is sleeved on the zero-position positioning piece, the angle disc has a scale line that corresponds to the zero-position scale line of the fixed seat fixed on the main frame, and the angle disc is linked to the zero-position positioning piece. The angle disc and the zero-position positioning piece are each equipped with a magnet, and the above-mentioned magnet is matched with a Hall sensor to control the stop of the motor in the pipe bender. A pipe bending rod is installed on the pipe bending disc, and the pipe bending rod has a bending hook portion, which matches the pipe to be bent.
[0005] The main frame includes a first shell and a second shell that are fixed to each other; the second shell has a placement groove, the shell is placed in the placement groove and is axially connected to the second shell.
[0006] The gear is provided with a square column, a first circular column and a second circular column; the square column is provided with a first pin hole and the first circular column is provided with a second pin hole; the bent pipe disk is arranged on the first pin hole and fixed to the square column through a pin shaft; the zero position positioning piece is arranged on the second pin hole and fixed to the first circular column through a pin shaft; the second circular column cooperates with the collar portion of the fixing seat through a bearing, and the above-mentioned fixing seat is fixed to the first shell.
[0007] A first scale line is designed on the surface of the angle disk facing the bending tube disk, and the first scale line is the angle data; a limiting protrusion and a first magnetic seat are designed on the surface of the angle disk facing the zero position positioning piece, and a magnet is placed in the above-mentioned first magnetic seat, and the limiting protrusion contacts and cooperates with the second magnetic seat on the zero position positioning piece, and the above-mentioned second magnetic seat has another magnet.
[0008] The zero position positioning member has a pin groove, and the pin shaft is arranged in the above pin groove. The zero position positioning member is designed with a longitudinally protruding fixing column on the inner hollow edge, and the inner wall of the angle disk is sleeved on the above fixing column.
[0009] The outer wall of the fixing column is a multi-tooth structure, and the multi-teeth are evenly arranged.
[0010] The angle disc is designed with a ball seat on the same side as the first magnetic seat, in which balls are placed, and a plurality of aligned rolling grooves are provided at corresponding positions on the zero position positioning member.
[0011] The pipe bending disk is provided with a second scale line, which is angle data and is kept aligned with the first scale line.
[0012] The pipe bend plate is designed with a first through-groove, and the square column penetrates the first through-groove and cooperates with the pipe bend plate.
[0013] The bending pipe block has a second through-groove, and the screw rod passes through the second through-groove and is fixed to the screw hole on the fixing seat. The fixing seat has a plurality of aligned screw holes; the fixing seat has a zero position scale line, which is aligned with the zero position of the second scale line.
[0014] The beneficial effect of the present invention is that: through the above configuration, the gears can drive the pipe bending disk and the pipe bending rod to rotate, so that the pipe to be bent can be bent. By designing the angle disk, the zero position positioning part, the magnetic steel, and the Hall sensor to work together, the angle of the bent pipe can be pre-adjusted. After the angle is bent and determined, the machine automatically stops working, thereby ensuring the accuracy of the bending angle. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of a pipe bending machine;
[0016] Figure 2 This is a schematic diagram of the pipe bender from another angle;
[0017] Figure 3 It is a schematic diagram of the pipe bending plate and the pipe bending rod;
[0018] Figure 4 yes Figure 1 Remove the pipe bender Figure 3 Schematic diagram of the pipe bending plate and pipe bending rod;
[0019] Figure 5 yes Figure 4 Schematic diagram of the decomposition;
[0020] Figure 6 This is a schematic diagram of the angle plate and the zero position positioning member changing from a combined state to a separated state;
[0021] Figure 7This is an exploded diagram of the angle plate and zero position positioning piece from another angle;
[0022] Figure 8 It is a schematic diagram of a gear;
[0023] Figure 9 yes Figure 4 Schematic diagram of the pipe bender after removing the angle plate, zero position positioning piece, Hall sensor, protective shell, and first shell;
[0024] In the picture
[0025] 1. Main frame, 11. First shell, 111. Placement slot, 12. Second shell, 121. Arc slot;
[0026] 2. Gear, 21. Tooth, 22. Square column, 221. First pin hole, 23. First circular column, 231. Second pin hole, 24. Second circular column;
[0027] 3. Bending plate, 31. Second scale line, 32. First through-groove, 33. Arc cavity;
[0028] 4. Bending rod, 41. Hook;
[0029] 5. Bend block, 51. Straight slot, 52. Second through slot;
[0030] 6. Fixing seat, 61. Fixing portion, 611. Screw hole, 62. Collar portion, 63. Zero scale line;
[0031] 7. Screw;
[0032] 8. Angle plate, 81. First scale line, 82. Limiting protrusion, 83. First magnetic seat, 84. Ball seat;
[0033] 9. Zero position positioning member, 91. Second magnetic base, 92. Fixed column, 93. Pin groove, 94. Roller groove;
[0034] 101. Magnet, 102. Hall sensor, 103. Protective housing, 104. Bearing. DETAILED DESCRIPTION
[0035] Please refer to Figures 1 to 9The pipe bender in the figure uses a lithium battery to drive the clutch, which in turn drives the gear 2 to rotate. This allows the bending disc 3 and bending rod 4 to rotate to achieve the bending operation. At the same time, the angle disc 8 and zero position positioning member 9 are used for pre-adjustment before the operation. After the pipe is bent to the set angle, the motor stops working, thereby ensuring the accuracy of the bending angle. The above-mentioned pipe bender is mainly designed with the main frame 1, gear 2, angle disc 8, zero position positioning member 9, magnet 101, Hall sensor 102, bending disc 3, bending rod 4, bending block 5, screw 7, fixed seat 6, bearing 104 and other components. In actual application, the above components can be further optimized or additional components can be added.
[0036] The main frame 1 in the figure is the external shell component of the pipe bending machine, namely the first shell 11 and the second shell 12. The two shells are fixed together in a conventional shell matching manner. The first shell 11 is designed with a circular placement groove 111 structure at the position matching with the gear 2, which is convenient for placing the gear 2 at this position and matching with the bearing 104. In this way, the gear 2 can rotate on the first shell 11 to realize the axial connection of the gear 2 to the main frame 1. The second shell 12 is designed with a through hole at the position matching with the gear 2, which is convenient for the gear 2 to pass through at the corresponding position. At the same time, the second shell 12 is designed with an arc groove 121 at the position configured with the protective shell 103 of the Hall sensor 102. The protective shell 103 is also designed to be arc-shaped, so that the protective shell 103 can be placed in the arc groove 121.
[0037] The gear 2 in the figure is mainly designed with a tooth portion 21, a square column 22, a first circular column 23, and a second circular column 24 structure. The tooth portion 21 is at the bottom position of the gear 2, and it has a multi-tooth structure to facilitate engagement and transmission with the clutch in the machine; the square column 22 is at the top position of the gear 2, which is a square bar-shaped column structure with a first pin hole 221 thereon, thereby cooperating with the pin shaft to achieve fixation with the bend pipe disk 3; the first circular column 23 is a cylindrical structure and is located below the square column 22, with a second pin hole 231 thereon, thereby cooperating with the pin shaft to achieve fixation with the zero-position positioning member 9; the second circular column 24 is also a cylindrical structure and is located below the first circular column 23. It is connected to the collar of the fixed seat 6 through the bearing 104, thereby ensuring that the relative rotation of the gear 2 and the fixed seat 6 does not affect each other.
[0038] The pipe bending disk 3 in the figure is a structure similar to a fan-shaped disk, and its top surface has a second scale line 31 to form angle data, such as angle data of 0-180 degrees. The side wall of the pipe bending disk 3 is an arc cavity 33 structure. The structure of the arc cavity 33 corresponds to the diameter of the pipe to be bent, so as to facilitate the pipe bending operation. The center position of the pipe bending disk 3 is designed with a square first through-groove 32 structure, so that the square column 22 at the corresponding position of the gear 2 is fixed to each other through a pin. When the pipe bending operation begins, the above-mentioned 0-degree angle data points to the zero-position scale line 63 of the fixing seat 6, and the angle of the pipe to be bent is consistent with the angle data on the pipe bending disk 3, thereby displaying the bending angle in real time for the user to view.
[0039] The pipe bending rod 4 in the figure is a straight rod structure, one end of which is fixed to the pipe bending disk 3 by a screw, and the other end is a hook portion 41, which is designed as a hook structure to cover the pipe to be bent. When the pipe bending disk 3 rotates counterclockwise, the above-mentioned pipe bending rod 4 also rotates counterclockwise, thereby bending the pipe to be bent.
[0040] The pipe bending block 5 in the figure is located on one side of the pipe bending disk 3 and is aligned therewith. A straight groove 51 is designed on the pipe bending block 5 facing the pipe bending disk 3. The diameter of the straight groove 51 is the same as the diameter of the arc cavity 33. The straight groove 51 and the arc cavity 33 form the shape of the pipe to be bent, making it easier for the pipe to be bent to pass through the hook portion 41. To facilitate installation of the pipe bending block 5, a second through-groove 52 is designed on the pipe bending block 5. This facilitates the penetration of the screw 7 into the screw hole 611 of the fixing seat 6, thereby securing the pipe bending block 5.
[0041] The fixing seat 6 in the figure is designed with a fixing portion 61 and a collar portion 62 structure. The fixing portion 61 is a rod-shaped structure fixed to the first shell 11 and the second shell 12 by a screw 7. It is designed with multiple screw holes 611 structures, which can adjust the position of the pipe bending block 5, thereby clamping pipes of different diameters to be bent; the collar portion 62 is a hollow ring structure, which further fixes the gear 2 by enclosing the second circular column 24 of the gear 2 through the bearing 104. There is also a zero-position scale line 63 between the fixing portion 61 and the collar portion 62. The zero-position scale line 63 is aligned with the 0-degree angle data of the pipe bending disk 3, thus providing a reference for the rotation data of the pipe bending disk 3.
[0042] The main structure of the angle disk 8 in the figure is similar to a hollow disc structure, and its internal hollowness is convenient for the penetration of the zero-position positioning member 9. The direction of the angle disk 8 facing the bend tube disk 3 is the top surface, and the top surface is designed with a first scale line 81 to form angle data. The angle corresponds to the angle data of the bend tube disk 3. The direction of the angle disk 8 facing the zero-position positioning member 9 is the bottom surface, and the bottom surface is designed with a limiting protrusion 82, a first magnetic seat 83, and a ball seat 84 structure, wherein the limiting protrusion 82 is convenient for cooperating with the second magnetic seat 91 of the zero-position positioning member 9. In this way, when the bending angle needs to be pre-modulated, the zero-position positioning member 9 is rotated to adjust the bending angle. The second magnetic base 91 of the positioning member 9 can drive the angle disc 8 to rotate together through the limiting protrusion 82. The first magnetic base 83 is equipped with a magnet 101, which facilitates the cooperation of a Hall sensor 102 at the lower position. The ball is placed in the ball seat 84, which corresponds to the rolling groove 94 on the lower zero position positioning member 9, thereby facilitating the relative rotation of the angle disc 8 and the zero position positioning member 9 and allowing the angle disc 8 to return to its original position on the zero position positioning member 9 so that the 0-degree angle data of the angle disc 8 is aligned with the zero-position scale line 63 on the fixed seat 6. When a preset angle adjustment is required, the angle disc 8 is rotated clockwise to the desired angle to the zero-position scale line 63. When in operation: the zero position positioning member 9 drives the angle disc 8 to rotate counterclockwise, and the operation stops when the 0-degree angle data of the angle disc 8 points to the zero-position scale line 63 of the fixed seat 6.
[0043] The main structure of the zero-position positioning member 9 in the figure is similar to a hollow disc structure and is located below the angle disk 8 and rotates in conjunction with the gear 2. The interior is hollow to facilitate the penetration of the first circular column 23 of the gear 2. The zero-position positioning member 9 is designed with a second magnetic seat 91 at the bottom position in the figure so as to maintain a certain distance from the first magnetic seat 83 of the angle disk 8. Another magnet 101 is also installed in the above-mentioned second magnetic seat 91. The zero-position positioning member 9 is designed with a fixed column 92, a pin groove 93, and an aligned rolling groove 94 structure at the top position in the figure, wherein the fixed column 92 extends toward the angle disk 8 and forms a uniformly arranged multi-tooth structure for easy connection with the angle disk 8. The pin groove 93 is located on the inner wall of the fixed column 92 for easy cooperation with the pin shaft, and the rolling groove 94 is used to cooperate with the ball.
[0044] The Hall sensor 102 in the figure is an existing component, which is designed with two corresponding to the two magnetic bases, namely, zero-degree stop Hall and angle stop Hall; the zero-degree stop Hall is used when the zero-degree positioning piece returns counterclockwise and when the magnet 101 moves to the Hall position, it will be detected, and then fed back to the control component to control the motor to stop; the angle stop Hall is used when the magnet 101 on the angle disk 8 moves to the Hall position, it will be detected, and then fed back to the control component to control the motor to stop.
[0045] The protective shell 103 in the figure is an arc-shaped structure, which is used to protect the Hall sensor 102. The second shell 12 has a corresponding arc-shaped groove 121 structure to facilitate the placement of the protective shell 103.
[0046] The specific embodiments described above are merely intended to explain the present technical solution and are not intended to limit the present technical solution. In the description of the present technical solution, it should be noted that terms such as "upper" and "inner" indicate positions or location relationships based on the positions or location relationships shown in the accompanying drawings. These terms are used solely to facilitate the description of the present technical solution and to simplify the description. They do not indicate or imply that the device or component referred to must have a specific position, be constructed, or operate in a specific position. Therefore, they should not be construed as limiting the present technical solution.
[0047] At the same time, it should be noted that in the description of this technical solution, unless otherwise explicitly specified or limited, the terms "fixed" and "matched" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; they can refer to direct connection or indirect connection through an intermediate medium; they can refer to internal communication between two elements or interaction between two elements. For those skilled in the art, the specific meanings of the above terms in this technical solution can be understood according to specific circumstances.
[0048] Although embodiments of the present technical solution have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present technical solution, and the scope of the present technical solution is defined by the appended claims and their equivalents.
Claims
1. Handheld pipe bender, characterized by: The invention comprises a main frame (1), a gear (2), an angle plate (8), a zero-position positioning member (9), a magnetic steel (101), a Hall sensor (102), a pipe bending plate (3), a pipe bending rod (4), and a fixing seat (6); the gear (2) is axially connected to the main frame (1); the pipe bending plate (3) and the zero-position positioning member (9) are respectively fixed on the gear (2) from top to bottom and rotate together with the gear (2); the pipe bending plate (3) has an arc-shaped cavity (33) for cooperating with the pipe to be bent; the angle plate (8) is sleeved on the zero-position positioning member (9); the angle plate (8) The angle disc (8) has a scale line corresponding to the zero scale line (63) of the fixed seat (6) fixed on the main frame (1), and the angle disc (8) is linked with the zero position positioning member (9). The angle disc (8) and the zero position positioning member (9) are each provided with a magnetic steel (101). The magnetic steel (101) is matched with a Hall sensor (102) to control the stop of the motor in the pipe bending machine. The pipe bending disc (3) is equipped with a pipe bending rod (4), and the pipe bending rod (4) has a bending hook portion (41). The bending hook portion (41) matches the pipe to be bent.
2. The handheld pipe bender according to claim 1, characterized in that: The main frame (1) comprises a first shell (11) and a second shell (12) fixed to each other; the second shell (12) has a placement groove (111), and the shell is placed in the placement groove (111) and is axially connected to the second shell (12).
3. The handheld pipe bender according to claim 2, characterized in that: The gear (2) has a square column (22), a first circular column (23), and a second circular column (24); wherein the square column (22) has a first pin hole (221), and the first circular column (23) has a second pin hole (231); the pipe bend (3) is arranged on the first pin hole (221) and fixed to the square column (22) via a pin shaft; the zero position positioning member (9) is arranged on the second pin hole (231) and fixed to the first circular column (23) via a pin shaft; the second circular column (24) cooperates with the collar portion (62) of the fixing seat (6) via a bearing (104); and the fixing seat (6) is fixed to the first housing (11).
4. The handheld pipe bender according to claim 3, characterized in that: A first scale line (81) is designed on the surface of the angle disc (8) facing the bending tube disc (3), and the first scale line (81) is angle data; a limit protrusion (82) and a first magnetic seat (83) are designed on the surface of the angle disc (8) facing the zero position positioning member (9), and a magnetic steel (101) is placed in the first magnetic seat (83). The limit protrusion (82) contacts and cooperates with the second magnetic seat (91) on the zero position positioning member (9), and another magnetic steel (101) is placed in the second magnetic seat (91).
5. The handheld pipe bender according to claim 4, characterized in that: The zero-position positioning member (9) has a pin groove (93), and the pin shaft is arranged in the pin groove (93). The zero-position positioning member (9) is designed with a longitudinally protruding fixing column (92) on the edge of the inner hollow, and the inner wall of the angle plate (8) is sleeved on the fixing column (92).
6. The handheld pipe bender according to claim 5, characterized in that: The outer wall of the fixing column (92) is a multi-tooth structure, and the multi-tooth is evenly arranged.
7. The handheld pipe bender according to claim 6, characterized in that: The angle disc (8) is designed with a ball seat (84) on the same side as the first magnetic seat (83), and a ball is placed in the ball seat (84). The zero position positioning member (9) has a plurality of aligned rolling grooves (94) at corresponding positions.
8. The handheld pipe bender according to claim 7, characterized in that: The pipe bending disc (3) has a second scale line (31), which is angle data and is aligned with the first scale line (81).
9. The handheld pipe bender according to claim 8, characterized in that: The pipe bend disc (3) is designed with a first through-groove (32), and the square column (22) penetrates the first through-groove (32) and cooperates with the pipe bend disc (3).
10. The handheld pipe bender according to claim 9, characterized in that: The elbow block (5) has a second through-groove (52), and the screw (7) penetrates the second through-groove (52) and is fixed to the screw hole (611) on the fixing seat (6). The fixing seat (6) has a plurality of aligned screw holes (611); the fixing seat (6) has a zero position scale line (63) aligned with the zero position of the second scale line (31).