Polishing device for inner wall of nodular cast iron pipe
By designing a ductile iron pipe inner wall grinding device controlled synchronously by multiple clamping arms, the problem of uneven grinding in the prior art is solved, and uniform grinding of the inner wall of the ductile iron pipe is achieved, and the smoothness and consistency of the inner wall of the pipe is improved.
Patent Information
- Application Number
- CN202421745976.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-07-23
AI Technical Summary
The existing ductile iron pipe inner wall grinding device is difficult to quickly locate the center of the circle inside the pipe body, resulting in uneven polishing and may damage the inner wall of the pipe.
A ductile iron pipe inner wall grinding device is designed, and multiple clamping arms are used to synchronize the clamping on the pipe. The center of the pipe is determined by the center point of the clamping arm, and the clamping arm is driven by the rotating part and the connecting part to ensure that the grinding head is aligned with the center of the inner wall of the pipe.
The inner wall of the ductile iron pipe is uniformly polished, avoiding the problem of excessive or insufficient polishing, improving the smoothness and consistency of the inner wall of the pipe, and reducing damage to the inner wall of the pipe.
Smart Images
Figure CN222806654U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of ductile iron pipe processing, in particular to a ductile iron pipe inner wall grinding device. Background Art
[0002] Ductile iron pipe refers to a pipe made by high-speed centrifugal casting in a centrifugal ductile iron machine using molten iron above No. 18 after adding spheroidizing agent. It is mainly used for the transportation of tap water and is an ideal material for tap water pipes.
[0003] During the processing of ductile iron pipes, the inner walls of both ends of the pipe body need to be polished. Polishing can ensure that the outer diameter of the plug is smoothly marked and avoid time delays caused by caliber mismatch during installation. Polishing can remove impurities such as oxide scale, protrusions (such as sticky iron, sticky slag) on the inner wall of the pipe, making the inner wall smoother and reducing the resistance of water flow, thereby improving the water circulation efficiency.
[0004] Existing grinding devices are generally used by hand or loaded on a bracket that can be fixed in a position. When grinding the inner wall of a ductile iron pipe in the above manner, it is difficult to quickly locate the center of the circle inside the pipe body before grinding. The deviation of the grinding head from the center of the circle may cause excessive grinding of certain areas of the inner wall of the pipe, while other areas may be insufficiently polished. This uneven grinding effect will affect the smoothness and consistency of the inner wall of the pipe, and may also cause impact or scratches, thereby damaging the inner wall of the pipe, especially for pipes made of relatively fragile materials. Utility Model Content
[0005] The problem solved by the utility model is to provide a ductile iron pipe inner wall grinding device, which can grind the pipe evenly and avoid damaging the inner wall of the pipe.
[0006] The utility model is realized through the following technical solutions:
[0007] A ductile iron pipe inner wall grinding device, comprising:
[0008] Base;
[0009] A plurality of clamping arms are arranged to simultaneously approach or move away from the center of the base, and at least some of the clamping arms simultaneously clamp the ductile iron pipe;
[0010] A first grinding head is mounted on the base and is used for grinding the inner wall of the ductile iron pipe;
[0011] A driving source is mounted on the base;
[0012] The rotating part is connected to the power shaft of the driving source and rotates along with the power shaft of the driving source;
[0013] The connecting portion is arranged between the rotating portion and the clamping arm, and is used to drive the clamping arm to move when the rotating portion rotates.
[0014] A plurality of through holes are formed on one side of the base, and the plurality of through holes are evenly distributed, and the clamping arms pass through the corresponding through holes.
[0015] The number of the clamping arms is not less than four, a rotation groove is provided on the surface of the clamping arm, and one end of the connecting portion is connected to the rotation groove.
[0016] A long strip-shaped depression is formed on the surface of the clamping arm, and a plurality of suction cups distributed in equal rows are connected in the depression.
[0017] The centers of the rotating part and the base are located on the same straight line, and a plurality of evenly distributed grooves are formed on the outer circle of the rotating part. The end of the connecting part away from the clamping arm is connected to the corresponding groove.
[0018] A turntable is provided on one side of the base, a movable groove is opened on one side of the turntable, a back plate and a third motor are connected in the movable groove, the third motor is connected to one side of the back plate, both sides of the back plate are in contact with the two side walls of the movable groove, the output shaft of the third motor is connected to the first grinding head, and a second grinding head is clamped at one end of the first grinding head.
[0019] The outer ring of the turntable is connected to a second motor, the output end of the second motor is connected to a lead screw, and the lead screw passes through the moving slot and is connected to the back plate through a thread.
[0020] A mounting groove matched with the turntable is provided on one side of the base, the turntable is rotatably mounted in the mounting groove, and the size of the mounting groove matches that of the turntable.
[0021] A motor slot is provided on an inner wall of one side of the installation slot, a first motor is installed in the motor slot, and an output end of the first motor is connected to the turntable for driving the turntable to rotate.
[0022] Compared with the prior art, the utility model has the following beneficial effects:
[0023] 1. By synchronously controlling multiple clamping arms to clamp on the pipe, the center of the pipe can be quickly determined and the pipe can be polished evenly.
[0024] 2. By adjusting the distance from the first grinding head to the center of the turntable, the inner wall of ductile iron pipes with different radii can be ground, with better adaptability. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 This is a schematic diagram of the three-dimensional structure proposed by the utility model.
[0026] Figure 2 This is a schematic diagram of the three-dimensional structure from another viewing angle proposed by the utility model.
[0027] Figure 3 This is an exploded view of the three-dimensional structure proposed by the utility model.
[0028] Figure 4 This is a schematic diagram of the main structure proposed by the utility model.
[0029] The reference numerals in the figure are:
[0030] 1. Base; 101. Through hole; 102. Mounting slot; 103. First motor;
[0031] 2. Turntable; 201. Moving slot; 202. Second motor; 203. Back plate; 204. Third motor; 205. First grinding head; 206. Second grinding head; 207. Screw;
[0032] 3. driving source; 301. rotating part; 302. connecting part; 303. groove; 304. rotating groove;
[0033] 4. Clamping arm; 401. Suction cup; 402. Depression. DETAILED DESCRIPTION
[0034] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0035] The utility model provides a device for grinding the inner wall of a ductile iron pipe, which solves the problem that it is difficult for the grinding device to be quickly positioned at the center of a circle inside the pipe body before grinding. The deviation of the grinding head from the center of a circle may cause excessive grinding of certain areas of the inner wall of the pipe, while other areas may be insufficiently polished, and there may also be problems of impacting or scratching the pipe. When in use, multiple clamping arms 4 are synchronously controlled to clamp on the pipe, so that the center of the pipe can be quickly determined and the pipe can be evenly polished.
[0036] The technical solution in the embodiment of the present application is to solve the above technical problems, and the overall idea is as follows:
[0037] The base 1 can be clamped and fixed on one end of the ductile iron pipe by using the clamping arm 4. The clamping arm 4 is controlled to clamp outside the pipe. Since the center points of the multiple clamping arms 4 are determined on a plane that matches the pipe cross-section; when they are clamped outside the pipe, the line connecting their center points will pass through the center of the pipe. It can be considered that the center points of the multiple clamping arms 4 are the center of the pipe, that is, the base 1 and the center of the pipe are on the same straight line.
[0038] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0039] Reference Figure 1-Figure 4 A ductile iron pipe inner wall grinding device comprises a base 1, a plurality of clamping arms 4 are arranged to simultaneously approach or move away from the center of the base 1, and at least part of the clamping arms 4 clamp the ductile iron pipe at the same time.
[0040] When multiple clamping arms 4 approach the center of the base 1 at the same time, the base 1 can be clamped and fixed to one end of the ductile iron pipe by the clamping arms 4. By controlling the clamping arms 4 to clamp outside the pipe, it is ensured that they are in good contact with the pipe surface and are evenly stressed. Since the center points of the multiple clamping arms 4 are determined on a plane that matches the pipe cross-section, when they are clamped outside the pipe, the line connecting their center points will pass through the center of the pipe. It can be considered that the center points of the multiple clamping arms 4 are the center of the pipe, that is, the base 1 and the center of the pipe are on the same straight line. The advantage of this method is that it is simple and fast to operate, and does not require complex measuring equipment.
[0041] Reference Figure 1 , Figure 2 and Figure 3 A plurality of through holes 101 are formed on one side of the base 1, and the plurality of through holes 101 are evenly distributed. The clamping arms 4 pass through the corresponding through holes 101. The number of the clamping arms 4 is not less than four. A rotating groove 304 is formed on the surface of the clamping arm 4, and one end of the connecting portion 302 is rotatably connected in the rotating groove 304.
[0042] The plurality of through holes 101 provide a movement channel for the clamping arm 4 , thereby ensuring stable movement of the clamping arm 4 .
[0043] Reference Figure 1 and Figure 3 A long strip-shaped recess 402 is provided on the surface of the clamping arm 4, and a plurality of suction cups 401 distributed in equal rows are fixedly connected in the recess 402.
[0044] The recess 402 can be adapted to a pipe with a curved surface, and when the suction cup 401 is adsorbed on the pipe, it can ensure that the clamping arm 4 is in good contact with the surface of the pipe and is evenly stressed.
[0045] Reference Figure 3A turntable 2 is rotatably connected to one side of the base 1, a movable groove 201 is opened on one side of the turntable 2, a back plate 203 and a third motor 204 are slidably connected in the movable groove 201, the third motor 204 is fixedly connected to one side of the back plate 203, both sides of the back plate 203 are in contact with the two side walls of the movable groove 201, the output shaft of the third motor 204 is fixedly connected to the first grinding head 205, and one end of the first grinding head 205 is clamped with the second grinding head 206.
[0046] The first grinding head 205 and the second grinding head 206 are mutually engaged. The cylindrical first grinding head 205 can be used to grind the inner wall of the pipe in parallel, or the conical second grinding head 206 can be used to grind the edge of the pipe at a certain angle, so as to facilitate the subsequent assembly and docking of the pipe.
[0047] Reference Figure 3 The outer ring of the turntable 2 is fixedly connected to the second motor 202, and the output end of the second motor 202 is fixedly connected to the screw rod 207, which passes through the moving groove 201 and is connected to the back plate 203 by threads.
[0048] The second motor 202 can adjust the use position of the back plate 203 and the third motor 204 by driving the screw rod 207 to rotate, that is, adjust the distance from the first grinding head 205 to the center of the turntable 2, so that the inner wall of the ductile iron pipe with different radii can be ground, with higher adaptability.
[0049] Reference Figure 3 A mounting groove 102 adapted to the turntable 2 is provided on one side of the base 1. The turntable 2 is rotatably mounted in the mounting groove 102, and the size of the mounting groove 102 matches the turntable 2. A motor groove is provided on the inner wall of one side of the mounting groove 102. A first motor 103 is fixedly installed in the motor groove. The output end of the first motor 103 is fixedly connected to the turntable 2 for driving the turntable 2 to rotate.
[0050] The first motor 103 can control the rotation of the turntable 2, and the turntable 2 drives the first grinding head 205 and the second grinding head 206 to rotate around the center of the base 1. The first grinding head 205 and the second grinding head 206 will move around the center of the circle in the ductile iron pipe. While moving, the third motor 204 drives the first grinding head 205 and the second grinding head 206 to rotate and grind.
[0051] Reference Figure 2 and Figure 4The driving source 3 is fixedly mounted on the base 1, the rotating part 301 is connected to the power shaft of the driving source 3 and rotates with the power shaft of the driving source 3, the rotating part 301 and the center of the base 1 are located on the same straight line, the connecting part 302 is arranged between the rotating part 301 and the clamping arm 4, and is used to drive the clamping arm 4 to move when the rotating part 301 rotates, and its outer ring is provided with a plurality of evenly distributed grooves 303, and one end of the connecting part 302 away from the clamping arm 4 is connected to the corresponding groove 303.
[0052] The driving source 3 is used to drive the rotating part 301 to rotate. The rotation of the rotating part 301 can synchronously drive the displacement of multiple connecting parts 302. The connecting part 302 pulls the clamping arm 4 to move in the through hole 101, and can also control the synchronous displacement of multiple clamping arms 4. The driving source 3 can be a stepping motor, or a servo motor or other electrical equipment that can drive the rotating part 301 to rotate.
[0053] Reference Figure 2 and Figure 4 The connecting portion 302 may be a connecting rod or a soft rope, but a hard rod is beneficial for synchronous control of the clamping arm 4.
[0054] During use, the base 1 is placed at one end of the ductile iron pipe, and the first grinding head 205 and the second grinding head 206 are placed in the ductile iron pipe. The driving source 3 is used to drive the rotating part 301 to rotate. The rotation of the rotating part 301 can synchronously drive the displacement of multiple connecting parts 302. The connecting part 302 pulls the clamping arm 4 to move in the through hole 101, and can also control the synchronous displacement of multiple clamping arms 4.
[0055] When multiple clamping arms 4 simultaneously approach the center of the base 1, the base 1 can be clamped and fixed to one end of the ductile iron pipe by the clamping arms 4. By controlling the clamping arms 4 to clamp outside the pipe, when the suction cups 401 adsorb on the pipe, it can be ensured that the clamping arms 4 are in good contact with the pipe surface and are evenly stressed.
[0056] The second motor 202 can adjust the use position of the back plate 203 and the third motor 204 by driving the screw rod 207 to rotate, that is, adjust the distance from the first grinding head 205 to the center of the turntable 2, so that the inner wall of the ductile iron pipe with different radii can be ground; the first grinding head 205 and the second grinding head 206 are mutually engaged, and the cylindrical first grinding head 205 can be used to grind the inner wall of the pipe in parallel, and the conical second grinding head 206 can also be used to grind the edge of the pipe at a certain angle;
[0057] The first motor 103 controls the rotation of the turntable 2, and the turntable 2 drives the first grinding head 205 and the second grinding head 206 to rotate around the center of the base 1. The first grinding head 205 and the second grinding head 206 will move around the center of the circle in the ductile iron pipe. While moving, the third motor 204 drives the first grinding head 205 and the second grinding head 206 to rotate and grind.
[0058] In summary, compared with the prior art, the present invention has the following beneficial effects:
[0059] By synchronously controlling the clamping of the multiple clamping arms 4 on the pipe, the center of the pipe can be quickly determined, and the pipe can be polished evenly.
[0060] By adjusting the distance from the first grinding head 205 to the center of the turntable 2, the inner wall of the ductile iron pipe with different radii can be ground, and the adaptability is higher.
[0061] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A ductile iron pipe inner wall grinding device, characterized in that: include: Base (1); A plurality of clamping arms (4) are arranged to simultaneously approach or move away from the center of the base (1), and to enable at least some of the clamping arms (4) to clamp the ductile iron pipe simultaneously; A first grinding head (205) is mounted on the base (1) and is used for grinding the inner wall of the ductile iron pipe; A driving source (3) is mounted on the base (1); The rotating part (301) is connected to the power shaft of the driving source (3) and rotates along with the power shaft of the driving source (3); The connecting portion (302) is arranged between the rotating portion (301) and the clamping arm (4), and is used to drive the clamping arm (4) to move when the rotating portion (301) rotates.
2. A ductile iron pipe inner wall grinding device according to claim 1, characterized in that: A plurality of through holes (101) are provided on one side of the base (1), the plurality of through holes (101) are evenly distributed, and the clamping arms (4) pass through corresponding through holes (101).
3. The device for grinding the inner wall of a ductile iron pipe according to claim 1, characterized in that: A rotation groove (304) is provided on the surface of the clamping arm (4), and one end of the connecting portion (302) is connected to the rotation groove (304).
4. The device for grinding the inner wall of a ductile iron pipe according to claim 1, characterized in that: A long strip-shaped depression (402) is formed on the surface of the clamping arm (4), and a plurality of suction cups (401) distributed in equal rows are connected inside the depression (402).
5. The device for grinding the inner wall of a ductile iron pipe according to claim 1, characterized in that: The centers of the rotating portion (301) and the base (1) are located on the same straight line, and a plurality of evenly distributed grooves (303) are provided on the outer ring thereof, and one end of the connecting portion (302) away from the clamping arm (4) is connected to the corresponding groove (303).
6. The device for grinding the inner wall of a ductile iron pipe according to claim 1, characterized in that: A turntable (2) is provided on one side of the base (1); a movable groove (201) is provided on one side of the turntable (2); a back plate (203) and a third motor (204) are connected in the movable groove (201); the third motor (204) is connected to one side of the back plate (203); two sides of the back plate (203) are in contact with two side walls of the movable groove (201); an output shaft of the third motor (204) is connected to the first grinding head (205); and a second grinding head (206) is clamped at one end of the first grinding head (205).
7. A ductile iron pipe inner wall grinding device according to claim 6, characterized in that: The outer ring of the rotating disk (2) is connected to a second motor (202), the output end of the second motor (202) is connected to a screw rod (207), and the screw rod (207) passes through the movable groove (201) and is connected to the back plate (203) via a thread.
8. The device for grinding the inner wall of a ductile iron pipe according to claim 6, characterized in that: A mounting groove (102) adapted to the turntable (2) is provided on one side of the base (1); the turntable (2) is rotatably mounted in the mounting groove (102); and the size of the mounting groove (102) matches that of the turntable (2).
9. A ductile iron pipe inner wall grinding device according to claim 8, characterized in that: A motor slot is provided on an inner wall of one side of the installation slot (102), a first motor (103) is installed in the motor slot, and an output end of the first motor (103) is connected to the turntable (2) for driving the turntable (2) to rotate.