Grinding head magnetic pressure structure of pipe inner wall polishing machine
Through the magnetic pressure structure of the grinding head of the pipe inner wall polishing machine, the magnetic body is used to attract the grinding head to fit closely with the inner wall of the pipe, which solves the stability problem of the grinding tool in polishing the inner surface of the pipe, improves the polishing efficiency and quality, and adapts to the processing of pipes of different diameters.
Patent Information
- Application Number
- CN202422591386.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-10-25
AI Technical Summary
Existing technologies are unable to effectively solve the problem of polishing the inner surface of pipes, especially in the case of small and large pipes. The grinding tool cannot stably fit the inner wall, resulting in low polishing efficiency, poor quality, and even grinding tool loss and pipe bending.
The grinding head magnetic pressure structure of the pipe inner wall polishing machine is adopted, and the magnetic body is used to attract the grinding head to fit closely with the inner wall of the pipe. The stable positioning and synchronous movement of the grinding head are achieved through the magnetic pressure bracket and translation track, ensuring the stability of the grinding head on the inner wall of the pipe.
It achieves stable fit between the grinding head and the inner wall of the pipe, avoids vibration, improves polishing efficiency and quality, adapts to the processing needs of pipes of different diameters, and reduces abrasive tool loss.
Smart Images
Figure CN223406605U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an execution structure related to machining equipment for processing pipes, and particularly discloses a grinding head magnetic pressure structure of a pipe inner wall polishing machine. Background Art
[0002] During pipe production, their inner and outer surfaces are polished, especially for metal pipes. Polishing the outer surface of the pipe is relatively simple and conventional, and there are many methods. For example, using a continuously rotating fixture with fixed sandpaper to polish the outer surface of the entire pipe is a simple and feasible method; however, polishing the inner surface of the pipe requires the relatively narrow nozzle of the grinding tool to be inserted into the interior of the pipe. Without specialized equipment, it is impossible to completely polish the inner surface of the pipe. As the length of the pipe increases, the difficulty of polishing its center position will also increase. The thinner the diameter of the pipe, the smaller the grinding tool is required to polish it, which is also difficult.
[0003] If you need to polish a long tube of 2-3 meters in length, the grinding tool must at least reach 1-1.5 meters, which is half of the length of the tube body, to achieve full inside polishing of the tube. This method also requires two clamping of the pipe to complete the process. Therefore, the efficiency of inside tube polishing is relatively low in principle.
[0004] Therefore, subsequent in-pipe polishing equipment has adopted a solution in which the grinding tool length is greater than the pipe length, achieving an in-pipe polishing effect in which the grinding tool enters the pipe from one end and continuously grinds the inner wall of the pipe until it exits from the other end of the pipe. Only one clamping is required to complete the polishing of the inner surface of the pipe, thereby improving work efficiency.
[0005] Because the diameter of giant pipes is large, it is easy for general grinding tools to penetrate deep into the pipes. It is relatively easy to achieve internal polishing of pipes with existing equipment. However, when processing pipes of general specifications (diameter 2 cm-19 cm), the diameter of the grinding tools is generally less than 2 cm. If large pipes (diameter 16-19 cm) are processed, the inner diameter of the pipe mouth is significantly larger than the grinding tool. The grinding head will jump inside the pipe to be planed during the polishing process, and the grinding tool will hit the inner wall of the pipe, with disastrous consequences.
[0006] If the inner wall of the pipe is very thick and the pipe body is strong enough, the grinding head can still make good contact with the inner wall of the pipe and the stability can meet the processing requirements. However, when processing small pipes (diameter ≥ 2 cm), the pipe wall is usually thinner and the pipe body strength is lower. The pipe body may bend under its own weight. The grinding head cannot guarantee that it fits the inner wall of the pipe throughout the polishing process, and the polishing effect will be greatly reduced. The bent part of the pipe will also collide with the grinding head during rotation, causing excessive wear of the grinding tool. Moreover, if the bent part of the pipe does not fit with the grinding head, the polished surface will not be a qualified surface, which will lead to the problem of defective products.
[0007] Therefore, no matter which of the above situations, if the inner wall of the pipe cannot be well planed and ground, how to design a stable structure for stable internal grinding of the pipe is the key to solving the above inconveniences. Utility Model Content
[0008] In response to the technical defects in the background technology, the present invention proposes a magnetic pressure structure of the grinding head of a pipe inner wall polishing machine, which solves the above technical problems and meets the actual needs. The specific technical solution is as follows:
[0009] The grinding head magnetic pressure structure of the pipe inner wall polishing machine is characterized by comprising a frame connected to a grinding tool frame and a magnetic pressure bracket;
[0010] The grinding tool frame is fixedly mounted with a driving motor 1, the output shaft of the driving motor 1 is connected to a grinding shaft, and a grinding head is fixedly connected to the end of the grinding shaft via a fixing member;
[0011] The magnetic pressure bracket is composed of a bracket body, a support position provided at the top of the bracket body, a magnetic body fixed in the support position, and a pad fixed at the top of the magnetic body and having a V-shaped groove for the pipe to be positioned. The grinding shaft is attracted by the magnetic body at the position where the grinding head is fixed.
[0012] The frame is provided with at least one pair of translation rails, and the mold frame and the magnetic pressure bracket are both matched and movably connected with the translation rails.
[0013] As a further technical solution of the present invention, the bracket body is composed of a movable part, a supporting part and an adjustable lifting part. The movable part is movably connected to the translation track. The top of the movable part is connected to the adjustable lifting part. The supporting part is fixedly connected to the adjustable lifting part, and the support position is set at the top of the supporting part.
[0014] As a further technical solution of the present invention, the adjustable lifting part is composed of a sliding rod movably connected to the movable part and a threaded pair connected to the movable part, the threaded pair is composed of a nut section and a threaded rod section, the threaded rod section and the sliding rod are both fixedly connected to the support part, and the nut section is fixedly connected to the movable part.
[0015] As a further technical solution of the present invention, the surface of the grinding shaft is wrapped with a sheath layer whose diameter is similar to the outer diameter of the grinding head, and the length of the sheath layer is similar to the length of the non-grinding part of the grinding shaft.
[0016] As a further technical solution of the present invention, at least one connecting rod is connected between the mold frame and the magnetic pressure bracket.
[0017] As a further technical solution of the present invention, the magnetic body is a permanent magnet or an electromagnet. When the magnetic body is an electromagnet, its shell is insulated from the rest of the magnetic pressure support.
[0018] As a further technical solution of the present invention, any one of the grinding head, grinding shaft and fixing piece is made of iron-cobalt-nickel alloy.
[0019] The beneficial effects of the present invention are as follows: the overall structure of the solution is simple but the design is reasonable, the magnetic force is used to achieve a good fit between the grinding head and the inner wall of various types of pipes, and the grinding head moves synchronously with the movement of the grinding head in the pipe, ensuring that the grinding head will not jump or hang in the air under any circumstances, and it has well solved a series of processing problems caused by the inconvenience of the existing technology, and has the value of practical promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic diagram of the main structural features of the grinding head magnetic pressure structure of the present invention.
[0021] Figure 2 This is a schematic diagram of the actual installation effect of the grinding head magnetic pressure structure of the present invention.
[0022] Figure 3 It is a partially enlarged structural schematic diagram of the magnetic pressure bracket described in the present invention.
[0023] Figure 4 This is a schematic diagram of the axial implementation principle of the self-spinning pipe holder.
[0024] Figure 5 This is a schematic diagram of the effect of the grinding head magnetic pressure structure of the utility model. Figure 1 .
[0025] Figure 6 This is a schematic diagram of the effect of the grinding head magnetic pressure structure of the utility model. Figure 2 .
[0026] in:
[0027] 1- rack;
[0028] 2-grinding tool holder; 20-driving motor 1; 21-grinding shaft; 22-grinding head; 23-sheath layer; 24-fixing part;
[0029] 3-magnetic pressure bracket; 30-bracket body; 300-movable part; 301-support part; 302-adjustable lifting part; 302A-sliding rod; 302B-thread pair; 31-support position; 32-magnetic body; 33-pad;
[0030] 4- Translation track;
[0031] 5-spinning pipe holder; 50-driving rubber wheel shaft 50; 51-driving motor 2; 52-driven rubber wheel mounting frame; 53-lifting wheel frame; 54-driven rubber wheel shaft;
[0032] 6-Connecting rod. DETAILED DESCRIPTION
[0033] The following describes the implementation of the present invention in conjunction with the accompanying drawings and relevant embodiments. The implementation of the present invention is not limited to the following embodiments, and the present invention relates to relevant necessary components in this technical field, which should be regarded as common knowledge in this technical field and can be known and mastered by technicians in this technical field. For the convenience of explanation, in the present invention, the nouns "pipe" or "pipe fittings" describe the same kind of processed tubular raw materials.
[0034] Combine Figure 1 and Figure 2 As shown, when the present invention is specifically applied, a clamp for driving the pipe to rotate should be provided on its frame 1. Based on the technical fact that the grinding head structure actually driven by the present invention passes through the inner cavity of the pipe, and based on the prior art that a clamp for clamping and driving the outer wall of the pipe to be polished is used, it is possible to grind and polish all positions of the inner wall during processing. Specifically, as a preferred embodiment, the pipe internal polishing equipment of the present invention includes a frame 1, and the clamp selected for the equipment is a self-spinning pipe fixture 5 provided on the frame for clamping the outer wall of the pipe and driving the pipe to rotate. The self-spinning pipe fixture 5 includes at least two active rubber wheel shafts 50 hinged side by side on the frame 1. The active rubber wheel shaft 50 The shaft end is transmission-connected to the output end of a second driving motor 51 fixedly mounted in the frame, and the two active rubber wheel shafts 50 do not contact each other. The shaft end of the active rubber wheel shaft 50 and the output end of the second driving motor 51 are transmission-connected by any means such as a gear pair transmission, a sprocket transmission system, a pulley transmission system, etc. that can drive the two side-by-side active rubber wheel shafts 50 to rotate synchronously in the same direction. The frame 1 is also movably connected to a driven rubber wheel mounting frame 52, and a lifting wheel frame 53 is fixedly mounted on the driven rubber wheel mounting frame 52. A driven rubber wheel shaft 54 that cooperates with the active rubber wheel shaft 50 is hinged on the lifting wheel frame 53, so that under the drive of the lifting wheel frame 53, the driven rubber wheel shaft 54 can move toward / away from the active rubber wheel shaft 50.
[0035] Combine Figure 2 、 Figures 4 to 6As shown, based on the above basic structure, when the pipe needs to be processed, it is placed between the two active rubber wheel shafts 50, and then the lifting wheel frame 53 is driven to make the driven rubber wheel shaft 54 close to the outer wall of the pipe. In this way, when the driving motor 2 51 drives the active rubber wheel shaft 50 to rotate, the pipe sandwiched between the two active rubber wheel shafts will be driven by the active rubber wheel shaft 50 to rotate unidirectionally in the opposite direction of the rotation direction of the active rubber wheel shaft 50, and the driven rubber wheel shaft 54 can ensure that the pipe can be stably positioned and rotated between the three-point positioning constructed by "active rubber wheel shaft 50-driven rubber wheel shaft 54-active rubber wheel shaft 50", so that the relatively fixed position of the grinding tool during processing can process the pipe wall surface around the pipe when grinding inside the pipe.
[0036] Combine Figures 1 to 4 As shown, as the characteristic feature of the present invention, the same frame 1 is also provided with a mold frame 2 and a magnetic pressure bracket 3, the mold frame 2 is installed and fixed with a driving motor 20, the output shaft of the driving motor 20 is connected to a grinding shaft 21, and a grinding head 22 is fixedly connected to the end of the grinding shaft 21 through a fixing member 24, so that the grinding head 22 is driven by the driving motor 20 to rotate, the magnetic pressure bracket 3 is composed of a bracket body 30, a support position 31 provided at the top of the bracket body 30, a magnetic body 32 fixed in the support position 31, and a pad 33 fixed at the top of the magnetic body 32 and having a V-shaped groove for positioning the pipe, the grinding shaft 21 is attracted by the magnetic body 32 at the position where the grinding head 22 is fixed, and at least one pair of translation rails 4 is provided on the frame 1, the mold frame 2 and the magnetic pressure bracket 3 are both matched and movably connected with the translation rail 4, and are provided with a positioning member that can be used to position at any position on the translation rail 4. Furthermore, the self-rotating pipe holder 5 is also movably connected to the translation track 4, so as to facilitate the adjustment of the position of the pipe relative to the grinding head 22 at any time.
[0037] Specifically, the preferred embodiment of the present invention is as follows:
[0038] Combine Figure 3 、 Figure 5 and Figure 6As shown, the pipe is first installed and positioned on the pipe clamping position of the self-spinning pipe holder 5 according to the implementation principle of the basic structure described above, and its position is adjusted so that the grinding head 22 can extend into the pipe. At this time, since the grinding shaft 21 can be attracted by the magnetic body 32 at the position where the grinding head 22 is fixed, the grinding head 22 clamps the pipe body firmly in the clamping structure composed of the grinding head 22 and the magnetic body 32 under the action of the magnetic body 32. Since the position where the pad 33 contacts the pipe is a V-shaped groove, and the magnetic force is penetrating when it is large enough, no matter what the diameter of the pipe is, it can be easily cut. The pipe can be easily positioned on the top of the pad 33 without shaking left and right or up and down, and the pipe can also rotate on the pad 33 under the driving action of the self-spinning pipe holder 5 and is not easy to deviate from the original position. The overall positioning is very stable. Strictly speaking, this positioning method only requires the pipe to be positioned on the self-spinning pipe holder 5, and the self-spinning pipe holder 5 can adjust the positioning height by itself. Even if the heights of the mold frame 2 and the magnetic pressure bracket 3 are not adjustable, the magnetic pressure positioning method of the present invention can better adapt to pipes of different diameters.
[0039] On the premise that the pipe is positioned at the end of the magnetic pressure support 3, the drive motor 2 and the drive motor 1 20 are started at this time, so that the pipe itself and the grinding shaft 21 both rotate. At this time, the grinding head 22 can be clamped and positioned in the working state of grinding and cutting, so that the pipe can be polished by the grinding head 22 in a stable driving environment of the grinding shaft 21. Furthermore, by changing the fixed position of the self-spinning pipe holder 5 relative to the magnetic pressure support 3 and the grinding tool holder 2, the grinding head 22 can change its grinding and polishing position inside the pipe, and finally realize the complete pipe internal polishing process. Since the grinding head 22 structure realizes the stable support and continuous attraction of the magnetic pressure bracket 3 in the entire pipe internal polishing process, the pipe to be planed is always in close contact with the grinding head 22, and the grinding head 22 is unlikely to jump. The magnetic body 32 part always moves with the position of the grinding head 22, and there is no problem of the grinding head 22 hanging in the air. Therefore, the grinding head 22 is not prone to unnecessary loss due to unstable jumping. The internal polishing quality of the pipe is also effectively guaranteed and will not be affected by changes in the strength of the pipe material. It is a very simple but reasonable and ingenious magnetic pressure structure of the grinding head 22 for fixing the pipe.
[0040] Furthermore, the fixing part 24 itself can be made of a magnetically attracted material, specifically an alloy with iron, cobalt and nickel as the main elements. This part of the magnetically attracted alloy is widely used in industrial production. Therefore, the alloy composition can be adaptively selected according to the needs of the specific processing occasion. The grinding head 22 itself is made of corundum or ceramic sand with weaker magnetism, and the fixing part 24 provides magnetic attraction conditions between it and the magnetic body 32. Similarly, if the grinding shaft 21 itself and / or the grinding head 22 are made of a magnetically attracted material, since the grinding head 22 is fixed on the surface of the grinding shaft 21, it can also meet the basic requirement that the grinding shaft 21 can be attracted by the magnetic body 32 at the position where the grinding head 22 is fixed. Generally speaking, the fixing part 24 is a nut or a fixing pin.
[0041] The positioning members between the mold frame 2 and the magnetic pressure support 3 and the translation track 4 can be set with reference to the general track movement positioning mechanism.
[0042] Combine Figures 1 to 3 As shown, as one of the preferred embodiments of the present invention, the bracket body 30 is composed of a movable part 300, a supporting part 301 and an adjustable lifting part 302; wherein the movable part 300 is movably connected to the translation track 4, and the movable part 300 is a conventional track sliding / rolling structure. Those skilled in the art can adaptably select and match it based on the types of mechanical parts that can be purchased; the top of the movable part 300 is connected to the adjustable lifting part, and the adjustable lifting part 302 realizes its function by a mechanical structure that can freely adjust and fix the current height. For example, as in the present invention, the adjustable lifting part 302 is composed of a slide rod 302A movably connected to the movable part and a threaded pair connected to the movable part 300. 302B, the threaded pair 302B, as the name suggests, is composed of a threaded rod segment and a nut segment that cooperate with each other. The threaded rod segment and the slide bar 302A of the threaded pair 302B are fixedly connected to the support part 301, and the nut segment is fixedly connected to the movable part 300. The threaded pair 302B adjusts the relative position with the movable part 300 by changing the threaded fitting position, thereby adjusting the height of the support part 301, and the slide bar 302A is used to guide and balance the support part 301, so that it is not easy to get stuck in lifting and lowering. Similarly, the adjustable lifting part 302 can also be selected in a form similar to the screw structure, lifting motor, and jack structure to achieve the required function; the support position 31 is set at the top of the support part 301.
[0043] Based on these features, the present invention adjusts the height of the support portion 301 relative to the movable portion 300, allowing the pad 33 on the support portion 31 to adapt to the processing needs of pipes of varying diameters. This allows for pipes as small as 2 cm in diameter to as large as 16 to 19 cm in diameter, further expanding the present invention's range of applications.
[0044] Combine Figure 1 、 Figure 2 、 Figure 5 and Figure 6 As shown in the figure, as one of the preferred embodiments of the present invention, the surface of the grinding shaft 21 is further coated with a sheath layer 23 having a diameter similar to the outer diameter of the grinding head 22. The length of the sheath layer 23 is also similar to the length of the non-grinding portion of the grinding shaft 21. This structure serves to protect the grinding shaft 21 from being affected by the inner wall of the pipe during operation and to improve the rotational stability of the grinding shaft 21 during grinding. On the other hand, the sheath layer 23 also supports the inner wall of the pipe, allowing the rest of the pipe to receive support from the support force of the grinding tool holder 2 and the magnetic pressure bracket 3, further ensuring the quality of the internal polishing effect of the pipe.
[0045] Reference Figure 1 or Figure 2 As shown, as one of the preferred embodiments of the present invention, at least one connecting rod 6 is connected between the mold frame 2 and the magnetic pressure support 3. The function of the connecting rod 6 is to improve the stability of the mold frame 2 and the magnetic pressure support when the position of the pipe changes. Although in principle, the mold frame 2 is connected to the magnetic body 32 of the magnetic pressure support 3 by magnetic attraction through the series structure of the driving motor 20-grinding shaft 21-grinding head 22, so that a relatively integrated connection relationship is formed between the mold frame 2 and the magnetic pressure support 3, which can achieve the effect of synchronous movement of the mold frame 2 and the magnetic pressure support 3 on the translation track 4; but an additional connecting rod 6 is added between the mold frame 2 and the magnetic pressure support 3, so that the magnetic force of the magnetic body 32 does not have to overcome the friction caused by the movement between the mold frame 2 and the magnetic pressure support 3, but better attracts the grinding head 22 to clamp the pipe to be processed, thereby improving the processing effect and improving the convenience of equipment operation. At least one connecting rod 6 can meet the processing requirements, and increasing the number of connecting rods 6 will improve the strength of the overall structure.
[0046] As one of the preferred embodiments of the present invention, the magnetic body 32 is a permanent magnet or an electromagnet. When the magnetic body 32 is an electromagnet, its housing is insulated from the rest of the magnetic pressure support 3. Generally speaking, a permanent magnet can meet all processing needs, but if the manufacturing cost is sufficient, the controllable magnetic force of the electromagnet is more conducive to fixing the pipe and adjusting the position of the grinding head 22 relative to the pipe, making the grinding head 22 easier to control for full pipe internal polishing.
[0047] To sum up, the solution of the present invention is simple in structure but reasonably designed. It uses magnetic force to achieve good fit between the grinding head 22 and the inner walls of various types of pipes, and the magnetic pressure bracket 3 will also move synchronously with the movement of the grinding head 22 in the pipe under the action of magnetic attraction, so that no matter what the circumstances, the grinding head 22 will never jump or hang in the air, and it has good compatibility with processing specifications. Whether it is a small pipe with a diameter of 2 cm or a large pipe with a diameter of 16 to 19 cm, it can be well processed by internal polishing, thus solving a series of processing problems caused by the inconvenience in the existing technology, and has the value of practical promotion and application.
[0048] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.
Claims
1. The grinding head magnetic pressure structure of the pipe inner wall polishing machine is characterized by: It includes a frame connected to a mold frame and a magnetic pressure support; The grinding tool frame is fixedly mounted with a driving motor 1, the output shaft of the driving motor 1 is connected to a grinding shaft, and a grinding head is fixedly connected to the end of the grinding shaft via a fixing member; The magnetic pressure bracket is composed of a bracket body, a support position provided at the top of the bracket body, a magnetic body fixed in the support position, and a pad fixed at the top of the magnetic body and having a V-shaped groove for the pipe to be positioned. The grinding shaft is attracted by the magnetic body at the position where the grinding head is fixed. The frame is provided with at least one pair of translation rails, and the mold frame and the magnetic pressure bracket are both matched and movably connected with the translation rails.
2. The grinding head magnetic pressure structure of the pipe inner wall polishing machine according to claim 1 is characterized in that: The bracket body consists of a movable part, a supporting part and an adjustable lifting part. The movable part is movably connected to the translation track. The top of the movable part is connected to the adjustable lifting part. The supporting part is fixedly connected to the adjustable lifting part. The supporting position is set at the top of the supporting part.
3. The grinding head magnetic pressure structure of the pipe inner wall polishing machine according to claim 2 is characterized in that: The adjustable lifting part consists of a sliding rod movably connected to the movable part and a threaded pair connected to the movable part. The threaded pair consists of a nut section and a threaded rod section. The threaded rod section and the sliding rod are both fixedly connected to the supporting part, and the nut section is fixedly connected to the movable part.
4. The grinding head magnetic pressure structure of the pipe inner wall polishing machine according to claim 1 is characterized in that: The surface of the grinding shaft is wrapped with a sheath layer whose diameter is similar to the outer diameter of the grinding head, and the length of the sheath layer is similar to the length of the non-grinding part of the grinding shaft.
5. The grinding head magnetic pressure structure of the pipe inner wall polishing machine according to claim 1 is characterized in that: At least one connecting rod is connected between the mold frame and the magnetic pressure support.
6. The grinding head magnetic pressure structure of the pipe inner wall polishing machine according to claim 1 is characterized in that: The magnetic body is a permanent magnet or an electromagnet. When the magnetic body is an electromagnet, its shell is insulated from the rest of the magnetic pressure support.
7. The grinding head magnetic pressure structure of the pipe inner wall polishing machine according to claim 1 is characterized in that: Any one of the grinding head, the grinding shaft and the fixing piece is made of an iron-cobalt-nickel alloy.