Polishing device for electromagnetic flowmeter machining

Abstract

The invention relates to the technical field of electromagnetic flowmeter grinding, in particular to a grinding device for electromagnetic flowmeter machining. The device comprises a machine tool base, a grinding mechanism is arranged on the upper side of the machine tool base, a plurality of grinding belts are arranged on the grinding mechanism, a moving device is arranged on one side of the grinding mechanism, the moving device moves on the upper side of the machine tool base, and an electromagnetic flowmeter tube is arranged on the moving device. In the process that the grinding mechanism is inserted into the electromagnetic flow meter tube, the end grinding piece drives the grinding belt to enter the electromagnetic flow meter tube, so that the inner wall of the electromagnetic flow meter tube is ground at the position, with few meshes, on the grinding belt, and large particles on the inner wall of the electromagnetic flow meter tube are ground away; and meanwhile, in the process that the grinding mechanism grinds the electromagnetic flowmeter pipe, the spirally arranged end grinding piece guides chippings ground by the grinding belt in the direction away from the grinding mechanism, and the chippings are rapidly discharged from the interior of the electromagnetic flowmeter pipe.

Description

Technical Field

[0001] The invention relates to the technical field of electromagnetic flowmeter grinding, in particular to a grinding device for electromagnetic flowmeter processing. Background Art

[0002] Electromagnetic flowmeter is a new type of flow measurement instrument that developed rapidly in the 1950s and 1960s with the development of electronic technology. Electromagnetic flowmeter is an instrument that uses the principle of electromagnetic induction to measure the flow rate of conductive fluid based on the electromotive force induced when the conductive fluid passes through an external magnetic field. The structure of the electromagnetic flowmeter is mainly composed of a magnetic circuit system, a measuring conduit, electrodes, a shell, a lining and a converter. In the process of producing the electromagnetic flowmeter, the inside of the shell will be polished to make the side wall inside the shell smooth. The smooth shell will not block the liquid when the liquid flows, thereby improving the smoothness of the liquid flowing inside the shell.

[0003] At present, in the process of polishing the shell, the tool for polishing the shell is first rotated, and then the shell is inserted into the polishing tool, so that the tool polishes the inner wall of the shell smoothly. After the tool rotates for a period of time, the shell is pulled off the tool to complete the polishing of the inside of the shell. When using the polishing tool shell, in order to avoid the uniformity of the polishing marks on the side wall of the shell, the shell can be moved back and forth when polishing to avoid scratches on the inner wall of the shell due to the particles on the polishing belt. Therefore, when polishing the shell, the side wall of the shell is polished when the tool is inserted and pulled out of the shell, so as to ensure the polishing effect of the inner wall of the shell. However, this method has the following problems:

[0004] 1. Considering that there are particles of different sizes inside the shell just after production, when setting the grinding belt, if a grinding belt with a uniform mesh is used, the front end of the grinding belt will be severely worn, resulting in one end of the grinding belt being damaged while the other end is not worn. At this time, in order to ensure the grinding effect of the grinding belt, the grinding belt needs to be replaced. If replaced, it will cause waste of the grinding belt;

[0005] 2. If you use grinding belts with different meshes to grind the shell, when the shell is pulled out, the grinding belt with a smaller mesh will grind the inside of the shell again, causing deeper scratches on the side wall inside the shell, and deeper scratches will affect the effect of grinding the shell;

[0006] 3. After the debris is polished off, it will rotate with the polishing tool inside the shell. During the rotation, the polishing belt will drive the particles to move, causing the particles and the shell to rub against each other, causing scratches on the side wall of the shell. At the same time, as the debris moves with the polishing belt, the particles will adhere to the polishing belt, causing the side of the polishing belt to be filled with debris and flattened, thereby reducing the polishing effect of the polishing belt.

[0007] The existence of the above problems will cause the polished surface of the shell to be uneven during polishing. In order to improve the smoothness of the polished inner wall of the shell, the present solution provides a polishing mechanism to polish the inside of the shell smoothly. Summary of the invention

[0008] The object of the present invention is to provide a grinding device for electromagnetic flowmeter processing to solve the problems raised in the above background technology.

[0009] In order to achieve the above-mentioned purpose, a grinding device for electromagnetic flowmeter processing is provided, including a machine tool base, a grinding mechanism is arranged on the upper side of the machine tool base, a plurality of grinding belts are arranged on the grinding mechanism, a moving device is arranged on one side of the grinding mechanism, the number of particles on the grinding belt gradually increases from the end close to the moving device to the end far away from the moving device, and the number of particles on the end of the grinding belt far away from the moving device is the same, the moving device moves on the upper side of the machine tool base, an electromagnetic flowmeter tube is arranged on the moving device, the moving device drives the electromagnetic flowmeter tube to move toward the direction close to the grinding mechanism, the grinding mechanism drives the grinding belt to rotate, and in the process of the moving moving device driving the electromagnetic flowmeter tube to approach the grinding mechanism, the rotating grinding belt One end of the grinding mechanism is inserted into the interior of the moving device, so that the grinding belt on the grinding mechanism grinds the inner wall of the moving device. When the grinding mechanism grinds the inner wall of the electromagnetic flowmeter tube, the end with a smaller mesh number on the grinding belt first grinds the inner wall of the electromagnetic flowmeter tube, and then the end with a larger mesh number on the grinding belt grinds the electromagnetic flowmeter tube. After all the parts of the electromagnetic flowmeter tube that have the same mesh number as the grinding belt are in contact with the interior of the electromagnetic flowmeter tube, one end of the grinding mechanism penetrates the electromagnetic flowmeter tube, and the moving device stops moving. After the grinding mechanism grinds the electromagnetic flowmeter tube, the moving device moves in the opposite direction. At this time, the end of the grinding mechanism that penetrates the electromagnetic flowmeter tube shrinks inward, so that the grinding belt with a smaller mesh number does not contact the side wall of the electromagnetic flowmeter tube.

[0010] As a further improvement of the present technical solution, the grinding mechanism includes a positioning member and a rotating grinding member rotatably arranged inside the positioning member, one end of the rotating grinding member extends out of the positioning member and is provided with an end grinding member, the end grinding member slides along the axis direction inside the rotating grinding member, and the end grinding member changes the size of one end of the grinding mechanism during the movement, and a driving mechanism is provided inside the positioning member, which drives the rotating grinding member and the end grinding member to rotate.

[0011] As a further improvement of the present technical solution, the positioning member includes a positioning shell, an epitaxial column is fixed on one side of the positioning shell, an axial cavity is opened inside the epitaxial column, an installation cavity is arranged inside the positioning shell, one end of the axial cavity is connected to the installation cavity, and the rotating polishing member includes a rotating column, and the rotating column is rotatably arranged inside the installation cavity.

[0012] As a further improvement of the present technical solution, a grinding main column is fixed to the end of the rotating column away from the positioning shell, an end of the axial cavity away from the positioning shell is provided with an end groove, one end of the rotating column is rotatably set in the end groove, a limiting swivel is fixed on the rotating column, a limiting swivel groove is set on the side wall of the axial cavity, and the limiting swivel is rotatably set inside the limiting swivel groove.

[0013] As a further improvement of the present technical solution, the end grinding piece includes a sliding rod and a piston disk fixed on the sliding rod, a rod sliding groove is opened inside the grinding main column and the rotating column, the sliding rod is slidably arranged inside the rod sliding groove, and an air cavity groove is opened inside the limiting swivel, the piston disk is slidably arranged inside the air cavity groove, and the side wall of the air cavity groove and the arc-shaped side wall of the piston disk are in sliding contact.

[0014] As a further improvement of the present technical solution, a plurality of ventilation holes connected to the air cavity groove are provided on both side walls of the limit swivel, ventilation ring grooves are provided on both sides of the limit swivel groove, and two gas connecting columns connected to the ventilation ring grooves are provided on the epitaxial column. The ventilation ring groove is connected to the limit swivel through the ventilation holes. When one of the gas connecting columns transports gas inward, the gas enters the air cavity groove through the ventilation ring groove to push the piston disc to move in the air cavity groove.

[0015] As a further improvement of the technical solution, a plurality of spiral grinding plates are arranged in a circular array at the end of the sliding rod away from the piston disk, and one end of the spiral grinding plate is hinged with a rotating hinge, and the rotating hinge is rotatably arranged on the side wall of the grinding main column away from the rotating column. A hinge head is fixed on the side wall of the end of the sliding rod away from the piston disk, and a pull rod corresponding to the positions of the plurality of spiral grinding plates is hinged on the hinge head. The other end of the pull rod is hinged with a clamping slider, and an arc-shaped groove is provided on the inner side wall of the spiral grinding plate, and the clamping slider is slidably clamped in the arc-shaped groove.

[0016] As a further improvement of the technical solution, an extension tube is fixed to the end of the grinding main column away from the rotating column, the hinge head is slidably arranged inside the extension tube, a rod groove corresponding to the position of the pull rod is opened on the side wall of the extension tube, and one end of the pull rod extends from the inside of the extension tube through the rod groove to the outside of the extension tube.

[0017] As a further improvement of the present technical solution, a plurality of rod sliding tubes are fixed on the arc-shaped side wall of the extension tube away from the grinding main column, a top sliding rod is slidably arranged in the rod sliding tube, a top sliding groove matching one end of the top sliding rod is opened on the inner side wall of the spiral grinding plate, one end of the top sliding rod is slidably inserted in the top sliding groove, and a spring is fixedly installed on the top sliding rod, and the spring pushes the top sliding rod in the direction away from the extension tube.

[0018] As a further improvement of the present technical solution, the moving device includes a sliding base, two track bars are fixed on the top of the machine tool base, the sliding base is slidably set on the track bars, a fixed mold frame is fixedly installed on the upper side of the sliding base, a pressure frame is hinged on the fixed mold frame, the fixed mold frame and the pressure frame are combined to form a slot for placing the electromagnetic flowmeter tube, a clamping plate is fixed to one end of the pressure frame, a buckle is installed on one side of the fixed mold frame, and the buckle fixes the pressure frame to the fixed mold frame by squeezing the clamping plate, a nut block is fixed to the bottom of the sliding base, a screw is threadedly connected to the nut block, the screw is rotatably set on the machine tool base, and a servo motor for driving the screw to rotate is installed on the side wall of the machine tool base.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. In the grinding device for processing the electromagnetic flowmeter, during the process of inserting the grinding mechanism into the electromagnetic flowmeter tube, the end grinding piece drives the grinding belt into the interior of the electromagnetic flowmeter tube, so that the position with fewer meshes on the grinding belt first grinds the inner wall of the electromagnetic flowmeter tube, so that the large particles on the inner wall of the electromagnetic flowmeter tube are grinded off, and as the electromagnetic flowmeter tube continues to move, the position with more meshes on the grinding belt and the side wall of the electromagnetic flowmeter tube are grinded, so that the inner wall of the electromagnetic flowmeter tube is polished and smooth. At the same time, during the process of the grinding mechanism grinding the electromagnetic flowmeter tube, the spirally arranged end grinding piece guides the debris ground by the grinding belt in a direction away from the grinding mechanism, so that the debris is quickly discharged from the interior of the electromagnetic flowmeter tube, avoiding the debris from gathering inside the electromagnetic flowmeter tube and adhering to the grinding belt, thereby ensuring the grinding effect of the grinding belt.

[0021] 2. In the grinding device for processing the electromagnetic flowmeter, when the electromagnetic flowmeter tube moves to the grinding main column, the mesh numbers on the grinding belts on the grinding main column are the same. In this way, the inside of the electromagnetic flowmeter tube is polished and smoothed to make the inside of the electromagnetic flowmeter tube smooth to the same degree, thereby ensuring the grinding effect of the grinding mechanism on the electromagnetic flowmeter tube. At the same time, when the electromagnetic flowmeter tube is pulled out from the grinding mechanism, gas is delivered to the inside of the rotating grinding piece through the positioning piece, so that the end grinding piece slides inside the rotating grinding piece, and the pull rod pulls one end of the spiral grinding plate, so that one end of several spiral grinding plates shrinks inward, and the size of the shape formed by the combination of several spiral grinding plates is reduced. The spiral grinding plate with reduced size drives the grinding belt away from the side wall of the electromagnetic flowmeter tube, so that the grinding belt with less particle mesh number cannot contact the side wall of the electromagnetic flowmeter tube, thereby ensuring the effect of the grinding mechanism on the grinding of the inner wall of the electromagnetic flowmeter tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the device of the present invention;

[0023] Figure 2 It is a schematic diagram of the partial structure of the overall device of the present invention;

[0024] Figure 3 It is a schematic cross-sectional structural diagram of the grinding mechanism of the present invention;

[0025] Figure 4 It is a schematic diagram of the cross-sectional structure of the positioning member of the present invention;

[0026] Figure 5 It is a schematic diagram of the combined structure of the rotary grinding member and the driving mechanism of the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the rotary grinding member of the present invention;

[0028] Figure 7 It is a schematic cross-sectional structure diagram of a rotary grinding member of the present invention;

[0029] Figure 8 It is a schematic diagram of the structure of the end grinding piece of the present invention;

[0030] Fig. 9 This is one of the schematic diagrams of the structure of the end grinding piece of the present invention;

[0031] Fig.10 This is the second schematic diagram of the structure of the end grinding piece of the present invention;

[0032] Fig.11 This is the third schematic diagram of the structure of the end grinding piece of the present invention;

[0033] Fig.12 This is one of the structural schematic diagrams of the mobile device of the present invention;

[0034] Fig.13 The second schematic diagram of the structure of the mobile device of the present invention;

[0035] Fig.14 This is one of the schematic diagrams of the internal structure movement of the grinding mechanism of the present invention;

[0036] Fig.15 This is the second schematic diagram of the internal structure movement of the grinding mechanism of the present invention.

[0037] The meaning of each number in the figure is:

[0038] 1. Machine tool base;

[0039] 2. Grinding mechanism;

[0040] 21. Positioning member; 211. Positioning shell; 212. Mounting cavity; 213. Extension column; 214. Shaft cavity; 215. Positioning groove; 216. Ventilation ring groove; 217. Gas connection column; 218. End groove;

[0041] 22, rotating grinding piece; 221, grinding main column; 2211, rod slide groove; 222, rotating column; 223, limiting swivel; 2231, air cavity groove; 224, ventilation hole; 225, extension tube; 226, rod slot; 227, rod slide tube; 228, rotating hinge; 229, end gear;

[0042] 23, end grinding piece; 231, spiral grinding plate; 232, sliding rod; 233, piston plate; 234, hinged head; 235, pull rod; 236, arc-shaped slide groove; 237, clamping slider; 238, top slide groove; 239, top slide rod; 2391, spring;

[0043] 24. ball head; 241. stop rod; 25. blocking plate; 26. driving motor; 27. driving gear;

[0044] 3. Moving device; 31. Sliding base; 32. Fixed mold frame; 33. Press frame; 34. Nut block; 35. Screw rod; 36. Servo motor; 37. Buckle; 38. Card plate;

[0045] 4. Protective cover; 5. End cover plate; 6. Track bar; 7. Grinding belt. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0048] Example 1

[0049] In order to solve the problems that when grinding the shell, the end of the grinding belt 7 is damaged too quickly, the debris cannot be discharged so that the grinding effect of the grinding belt 7 is reduced, and the grinding belt 7 scratches the inside of the shell when the shell is pulled out, the purpose of this embodiment is to provide a grinding device for electromagnetic flowmeter processing, please refer to Figure 1-Figure 2As shown, it includes a machine tool base 1, a grinding mechanism 2 is arranged on the upper side of the machine tool base 1, a plurality of grinding belts 7 are arranged on the grinding mechanism 2, and the plurality of grinding belts 7 are arranged in a ring array. A moving device 3 is arranged on one side of the grinding mechanism 2, and the number of particles on the grinding belt 7 gradually increases from the end close to the moving device 3 to the end away from the moving device 3, and the number of particles on the end of the grinding belt 7 away from the moving device 3 is the same, and the moving device 3 moves on the upper side of the machine tool base 1. An electromagnetic flowmeter tube is arranged on the moving device 3, and the electromagnetic flowmeter tube is clamped and fixed by the moving device 3. The moving device 3 drives the electromagnetic flowmeter tube to move toward the direction close to the grinding mechanism 2, and the grinding machine The structure 2 drives the grinding belt 7 to rotate. In the process of the moving device 3 driving the electromagnetic flowmeter tube to approach the grinding mechanism 2, one end of the rotating grinding mechanism 2 is inserted into the interior of the moving device 3. At this time, the grinding belt 7 on the grinding mechanism 2 grinds the inner wall of the moving device 3. When the grinding mechanism 2 grinds the inner wall of the electromagnetic flowmeter tube, the end of the grinding belt 7 with a smaller number of particles first grinds the inner wall of the electromagnetic flowmeter tube, so that the grinding belt 7 first grinds off the larger particles inside the electromagnetic flowmeter tube, and then the end of the grinding belt 7 with a larger number of particles grinds the electromagnetic flowmeter tube, so that the grinding belt 7 grinds the inner wall of the electromagnetic flowmeter tube in detail. Grinding, in the process of the electromagnetic flowmeter tube moving, the grinding belt 7 grinds the inner wall of the electromagnetic flowmeter tube in a process from the direction of less mesh to the direction of more mesh, so that the inner wall of the electromagnetic flowmeter tube is first roughly ground, and then finely ground, so as to improve the effect of grinding the inner wall of the electromagnetic flowmeter tube, and after the inside of the electromagnetic flowmeter tube is all in contact with the parts with the same mesh number of particles on the grinding belt 7, one end of the grinding mechanism 2 penetrates the electromagnetic flowmeter tube, and the moving device 3 stops moving. At this time, the grinding mechanism 2 finely grinds all the inner walls of the electromagnetic flowmeter tube, so as to ensure the effect of grinding the inside of the electromagnetic flowmeter tube, and at the same time, the grinding mechanism 2 grinds the electromagnetic flowmeter tube After that, the moving device 3 moves in the opposite direction to move the electromagnetic flowmeter tube away from the grinding mechanism 2. At this time, one end of the grinding mechanism 2 that penetrates the electromagnetic flowmeter tube shrinks inward, so that the shrinking part of the grinding mechanism 2 drives one end of the grinding belt 7 to approach the direction of the rotation axis of the grinding mechanism 2, and the size of one end of the grinding mechanism 2 is reduced, so that the grinding belt 7 with a small particle size does not contact the side wall of the electromagnetic flowmeter tube. When the electromagnetic flowmeter tube passes through the position of the grinding belt 7 with a small particle size, the part of the grinding belt 7 with a small particle size does not grind the side wall of the electromagnetic flowmeter tube, so as to prevent the grinding belt 7 with a small particle size from scratching the polished position inside the electromagnetic flowmeter tube.

[0050] The following is a detailed description of the above structure, please refer to Figure 1-Figure 15The grinding mechanism 2 includes a positioning member 21 and a rotating grinding member 22 rotatably arranged inside the positioning member 21. One end of the rotating grinding member 22 extends out of the positioning member 21 and is provided with an end grinding member 23. The end grinding member 23 slides along the axis direction inside the rotating grinding member 22. The end grinding member 23 changes the size of one end of the grinding mechanism 2 during the movement. A driving mechanism is arranged inside the positioning member 21. The driving mechanism drives the rotating grinding member 22 and the end grinding member 23 to rotate. The rotating rotating grinding member 22 and the end grinding member 23 drive the grinding belt 7 to rotate, so that the grinding belt 7 is convenient for grinding the inner wall of the electromagnetic flowmeter tube.

[0051] The positioning member 21 includes a positioning shell 211, an outer column 213 is fixed on one side of the positioning shell 211, an axial cavity 214 is opened inside the outer column 213, an installation cavity 212 is arranged inside the positioning shell 211, one end of the axial cavity 214 is connected to the installation cavity 212, and the rotating polishing member 22 includes a rotating column 222, and the rotating column 222 is rotatably arranged inside the installation cavity 212. At the same time, the driving mechanism includes a driving motor 26 installed inside the installation cavity 212, a driving gear 27 is fixed on the rotating shaft of the driving motor 26, and an end gear 229 is fixed on one end of the rotating column 222 extending into the installation cavity 212, and the end gear 229 is meshed with the driving gear 27. When the driving motor 26 drives the driving gear 27 to rotate, the rotating column 222 is rotated inside the axial cavity 214 through the meshing between the driving gear 27 and the end gear 229.

[0052] A grinding main column 221 is fixed to the end of the rotating column 222 away from the positioning shell 211, and an end groove 218 is opened at the end of the shaft cavity 214 away from the positioning shell 211. One end of the rotating column 222 is rotatably set in the end groove 218, and a limiting rotating ring 223 is fixed on the rotating column 222. A limiting rotating groove 215 is set on the side wall of the shaft cavity 214. The shapes of the limiting rotating groove 215 and the limiting rotating ring 223 are adapted to each other. The limiting rotating ring 223 is rotatably set inside the limiting rotating groove 215. The mutual cooperation between the limiting rotating ring 223 and the limiting rotating groove 215 can fix the rotating positions of the rotating column 222 and the grinding main column 221 on the positioning member 21, so that the rotating column 222 can rotate stably in the shaft cavity 214.

[0053] The end grinding member 23 includes a sliding rod 232 and a piston disc 233 fixed on the sliding rod 232. A rod sliding groove 2211 is provided inside the grinding main column 221 and the rotating column 222. The sliding rod 232 is slidably arranged inside the rod sliding groove 2211, and an air cavity groove 2231 is provided inside the limiting rotating ring 223. The size of the piston disc 233 and the air cavity groove 2231 are adapted, and the piston disc 233 is slidably arranged inside the air cavity groove 2231. The side wall and the air cavity groove 2231 are The arcuate side wall of the piston disk 233 is in sliding contact, and a plurality of vent holes 224 connected to the air cavity groove 2231 are provided on the two side walls of the limiting rotating ring 223, and vent ring grooves 216 are provided on both sides of the limiting rotating groove 215, and the limiting rotating groove 215 and the vent ring groove 216 are connected. When the limiting rotating ring 223 is arranged inside the limiting rotating groove 215, the side wall of the limiting rotating ring 223 blocks the position where the vent ring groove 216 and the limiting rotating groove 215 are connected. 3 is provided with two gas connection columns 217 connected with the ventilation ring groove 216, the ventilation ring groove 216 is connected with the limit swivel 223 through the ventilation hole 224, the two gas connection columns 217 are connected with a high-pressure gas pipe, the other end of the high-pressure gas pipe is connected with an electromagnetic three-way valve, one end of the electromagnetic three-way valve is connected with a high-pressure air pump, and the other end port is not connected to the pipeline. The two electromagnetic three-way valves are electrically connected together. When one of the electromagnetic three-way valves passes the gas in the high-pressure air pump to the gas connection column 217, During gas transportation, another electromagnetic three-way valve connects the outside and the gas connecting column 217. When one of the gas connecting columns 217 transports gas inward, the gas enters the air cavity groove 2231 through the ventilation ring groove 216 to push the piston disc 233 to move in the air cavity groove 2231, and the gas on the other side of the piston disc 233 is discharged through another gas connecting column 217 and the electromagnetic three-way valve. When the piston disc 233 moves, it will drive the sliding rod 232 to slide inside the rod sliding groove 2211.

[0054] A plurality of spiral grinding plates 231 are arranged in a circular array at the end of the sliding rod 232 away from the piston disc 233. The grinding belt 7 is fixed on the outer wall of the spiral grinding plate 231 and the grinding main column 221. The mesh number of the grinding belt 7 on the spiral grinding plate 231 gradually increases from the end away from the grinding main column 221 to the end close to the grinding main column 221. The mesh number of the grinding belt 7 is the same as that on the grinding main column 221, and the mesh number of the grinding belt 7 is greater than that on the spiral grinding plate 231.

[0055] A rotating hinge 228 is hinged at one end of the spiral grinding plate 231, and the rotating hinge 228 is rotatably arranged on the side wall of the grinding main column 221 away from the rotating column 222. A hinge head 234 is fixed on the side wall of the end of the sliding rod 232 away from the piston disc 233. A pull rod 235 corresponding to the position of a plurality of spiral grinding plates 231 is hinged on the hinge head 234. A clamping slider 237 is hinged at the other end of the pull rod 235. An arc-shaped slide groove 234 is provided on the inner side wall of the spiral grinding plate 231. 6. The clamping slider 237 is slidably clamped in the arc-shaped slide groove 236. The clamping slider 237 slides stably in the arc-shaped slide groove 236. An extension tube 225 is fixed to the end of the grinding main column 221 away from the rotating column 222. The hinge head 234 is slidably set inside the extension tube 225. A rod groove 226 corresponding to the position of the pull rod 235 is opened on the side wall of the extension tube 225. One end of the pull rod 235 extends from the inside of the extension tube 225 to the outside of the extension tube 225 through the rod groove 226.

[0056] When the piston plate 233 is close to one end of the air cavity groove 2231, the position of the sliding rod 232 is as follows: Figure 3 As shown, at this time, the outer arc surface of the spiral grinding plate 231 and the arc surface of the outer side wall of the grinding main column 221 are on the same arc surface, and gaps are left between several spiral grinding plates 231. The spiral grinding plates 231 are spirally arranged, and their spiral angles are between 30 degrees and 60 degrees. The spiral angles of the spiral grinding plates 231 are set between 30 degrees and 60 degrees, which can not only ensure the gaps between each spiral grinding plate 231, but also ensure that the spiral grinding plates 231 can guide out the debris polished by the grinding belt 7 when rotating. At this time, the grinding main column 221 and the spiral grinding plate 231 are driven to rotate by the driving mechanism, and the rotating grinding main column 221 and the spiral grinding plate 231 drive the grinding belt 7 to rotate. When the moving device 3 drives the electromagnetic flowmeter tube to approach the grinding mechanism 2, the grinding belt 7 at the end of the end grinding piece 23 away from the grinding main column 221 first contacts the inner wall of the electromagnetic flowmeter tube, and the grinding belt 7 on the grinding belt 7 The particles with smaller mesh size are used to grind the inner wall of the electromagnetic flowmeter tube, and the large particles in the electromagnetic flowmeter tube are grinded away. Then, the part with larger mesh size of the grinding belt 7 contacts the position where the grinding belt 7 with smaller mesh size is grinded, so that the grinding belt 7 further grinds the inner wall of the electromagnetic flowmeter tube. In the process of the grinding mechanism 2 grinding the inner wall of the electromagnetic flowmeter tube, the debris grinded by the grinding belt 7 falls into the gap between several end grinding pieces 23, and then the spiral spiral grinding plate 231 guides the debris grinded by the grinding belt 7 away from the grinding mechanism 2, so that the debris is discharged from the inside of the electromagnetic flowmeter tube, so as to avoid the debris being stirred by the spiral grinding plate 231 inside the electromagnetic flowmeter tube and causing the debris to adhere to the grinding belt 7, so that the particle gaps on the grinding belt 7 are covered by the debris, and the roughness on the grinding belt 7 is reduced, thereby ensuring the use effect of the grinding belt 7.

[0057] During the process of inserting the grinding mechanism 2 into the electromagnetic flowmeter tube, the end grinding piece 23 drives the grinding belt 7 into the interior of the electromagnetic flowmeter tube, so that the position with fewer meshes on the grinding belt 7 first grinds the inner wall of the electromagnetic flowmeter tube, so that the large particles on the inner wall of the electromagnetic flowmeter tube are grinded off, and as the electromagnetic flowmeter tube continues to move, the position with more meshes on the grinding belt 7 and the side wall of the electromagnetic flowmeter tube are grinded, so that the inner wall of the electromagnetic flowmeter tube is polished and smooth. At the same time, during the process of the grinding mechanism 2 grinding the electromagnetic flowmeter tube, the spirally arranged end grinding piece 23 guides the debris ground by the grinding belt 7 in a direction away from the grinding mechanism 2, so that the debris is quickly discharged from the interior of the electromagnetic flowmeter tube, avoiding the debris from gathering inside the electromagnetic flowmeter tube and adhering to the grinding belt 7, thereby ensuring the grinding effect of the grinding belt 7.

[0058] After the moving device 3 drives the electromagnetic flowmeter tube to move to the polishing main column 221, the polishing belt 7 on the polishing main column 221 has the same particle size, so the polishing effect of the polishing belt 7 on the inside of the electromagnetic flowmeter tube is the same. At this time, the moving device 3 can drive the electromagnetic flowmeter tube to reciprocate on the polishing main column 221. The reciprocating electromagnetic flowmeter tube is fully polished by the polishing belt 7 on the polishing main column 221 to improve the smoothness of the polished surface of the electromagnetic flowmeter tube. After the internal polishing of the electromagnetic flowmeter tube is completed, please refer to Fig.15 At this time, the gas connection column 217 close to the polishing main column 221 delivers gas to the inside ( Fig.15The solid arrow in the figure indicates the flow direction of the gas, and the space arrow indicates the movement direction of the structure). At this time, the gas enters the gas cavity groove 2231 through the vent hole 224. The gas entering the gas cavity groove 2231 pushes the piston plate 233 away from the spiral grinding plate 231. The moving piston plate 233 transports the gas in the gas cavity groove 2231 to the gas connecting column 217 away from the grinding main column 221, so that the gas diffuses out. At this time, the sliding rod 232 drives the hinge joint 234 to The movable hinge head 234 pulls the pull rod 235, and the pulled pull rod 235 pulls the clamping slider 237. When the clamping slider 237 is pulled, the clamping slider 237 pulls the spiral grinding plate 231, so that one end of the spiral grinding plate 231 moves toward the direction close to the extension tube 225. Because the spiral grinding plate 231 is in the shape of a spiral arc, when the spiral grinding plate 231 approaches the extension tube 225, the spiral grinding plate 231 is in the shape of a spiral arc. The end of the spiral grinding plate 231 away from the grinding main column 221 moves in the spiral direction of the spiral grinding plate 231. At this time, the clamping slider 237 slides inside the arc-shaped slide groove 236. At the same time, the spiral grinding plate 231 rotates around the position where it is hinged with the top slide groove 238. At the same time, the position where the top slide groove 238 and the grinding main column 221 are connected is rotated, so that one end of the spiral grinding plate 231 is close to the extension tube 225. At this time, a plurality of spiral grinding plates 231 are away from one end of the grinding main column 221. The size of the ring formed together is smaller than the diameter of the grinding main column 221, and several spiral grinding plates 231 are combined to form an altar shape. When the moving device 3 drives the electromagnetic flowmeter tube to move to the position of the spiral grinding plate 231, the spiral grinding plate 231 drives the grinding belt 7 away from the side wall of the electromagnetic flowmeter tube, so that the grinding belt 7 with a small number of particles does not contact the side wall of the electromagnetic flowmeter tube, thereby preventing the grinding belt 7 with a small number of particles from scratching the polished side wall of the electromagnetic flowmeter tube.

[0059] When the moving device 3 drives the electromagnetic flow meter tube to detach from the upper side of the spiral grinding plate 231, Fig.14 , the gas connecting column 217 away from the polishing main column 221 transports gas to the ventilation ring groove 216, so that the gas pushes the piston plate 233 to move in the direction close to the polishing main column 221. At this time, the sliding rod 232 drives the hinge head 234 away from the polishing main column 221, and the hinge head 234 pushes the pull rod 235, so that the pull rod 235 and the clamping slider 237 push one end of the spiral polishing plate 231 away from the extension tube 225. At this time, the clamping slider 237 slides inside the arc-shaped slide groove 236, and the end of the spiral polishing plate 231 away from the polishing main column 221 is away from the extension tube 225, so that the outer wall of the spiral polishing plate 231 and the side wall of the polishing main column 221 are on the same arc surface, so as to facilitate the subsequent polishing of the next electromagnetic flowmeter tube.

[0060] In order to improve the stability of the spiral grinding plate 231 away from the extension tube 225, a plurality of rod slide tubes 227 are fixed on the arc-shaped side wall of the extension tube 225 away from the grinding main column 221. A top slide rod 239 is slidably arranged in the rod slide tube 227. The rod slide tube 227 limits the position of the top slide rod 239 so that the top slide rod 239 can only move along the axis of the rod slide tube 227. At the same time, a top slide groove 238 adapted to one end of the top slide rod 239 is opened on the inner side wall of the spiral grinding plate 231. One end of the top slide rod 239 is slidably inserted into the inside of the top slide groove 238, and a spring is fixedly installed on the top slide rod 239. Spring 2391, the spring 2391 pushes the top slide rod 239 in the direction away from the extension tube 225. When the spiral grinding plate 231 approaches the extension tube 225, one end of the top slide rod 239 slides in the top slide groove 238, and the spring 2391 is squeezed and contracted. When the spiral grinding plate 231 is away from the extension tube 225, the top slide rod 239 uses the elastic force of the spring 2391 to push the spiral grinding plate 231 in the direction away from the extension tube 225. At this time, when the clamping slider 237 pushes the spiral grinding plate 231, the top slide rod 239 assists the movement of the spiral grinding plate 231 to ensure the stable movement of the spiral grinding plate 231.

[0061] At the same time, a ball head 24 is threadedly connected to the end of the extension tube 225 away from the polishing main column 221, and the diameter of the ball head 24 is smaller than the diameter of the polishing main column 221. At the same time, a push rod 241 is fixed to the side of the ball head 24 close to the polishing main column 221, and a blocking plate 25 is arranged between the hinge head 234 and the push rod 241. When the hinge head 234 is away from the polishing main column 221, the blocking plate 25 blocks the hinge head 234 to limit the moving position of the hinge head 234 and prevent the piston plate 233 from hitting the side wall of the air cavity groove 2231 to reduce the service life of the polishing mechanism 2.

[0062] When the electromagnetic flowmeter tube is pulled out from the grinding mechanism 2, gas is delivered to the interior of the rotating grinding member 22 through the positioning member 21, so that the end grinding member 23 slides inside the rotating grinding member 22, and the pull rod 235 pulls one end of the spiral grinding plate 231, so that one end of several spiral grinding plates 231 shrinks inward, and the size of the shape formed by the combination of several spiral grinding plates 231 is reduced. The spiral grinding plate 231 with reduced size drives the grinding belt 7 away from the side wall of the electromagnetic flowmeter tube, so that the grinding belt 7 with a smaller particle size cannot contact the side wall of the electromagnetic flowmeter tube, thereby ensuring the effect of the grinding mechanism 2 on the inner wall of the electromagnetic flowmeter tube.

[0063] The structure of the mobile device 3 is detailed below. Figure 1-Figure 2 as well as Figure 12-13As shown, the moving device 3 includes a sliding base 31, two track bars 6 are fixed on the top of the machine tool base 1, the sliding base 31 is slidably set on the track bars 6, a fixed mold frame 32 is fixedly installed on the upper side of the sliding base 31, a nut block 34 is fixed at the bottom of the sliding base 31, a screw 35 is threadedly connected in the nut block 34, the screw 35 is rotatably set on the machine tool base 1, and a servo motor 36 for driving the screw 35 to rotate is installed on the side wall of the machine tool base 1. The servo motor 36 can rotate forward and reverse when in use, wherein an end sealing plate 5 fixed on the machine tool base 1 is arranged between the servo motor 36 and the machine tool base 1, and the servo motor 36 is fixed on the end sealing plate 5. When the end sealing plate 5 is removed, the sliding base 31 can be removed from the track bar 6, so as to facilitate the later replacement of the sliding base 31.

[0064] A press frame 33 is hinged on the fixed mold frame 32. The fixed mold frame 32 and the press frame 33 are combined to form a slot for placing the electromagnetic flowmeter tube. The electromagnetic flowmeter tube is placed in the slot. At the same time, a clamping plate 38 is fixed at one end of the press frame 33. A buckle 37 is installed on one side of the fixed mold frame 32. The buckle 37 fixes the press frame 33 on the fixed mold frame 32 by squeezing the clamping plate 38. When the electromagnetic flowmeter tube needs to be polished, the press frame 33 is opened as shown in FIG. Fig.13 Then put the electromagnetic flowmeter tube into the slot, and then rotate the press frame 33 downward to Fig.12 state, and then the clamping plate 38 is squeezed by the buckle 37 to fix the pressing frame 33 on the fixed mold frame 32. At this time, the electromagnetic flowmeter tube is fixed on the moving device 3, and then the servo motor 36 drives the screw 35 to rotate. With the help of the threaded connection between the screw 35 and the nut block 34, the nut block 34 drives the sliding base 31 and the electromagnetic flowmeter tube to approach the grinding mechanism 2. At the same time, a protective cover 4 is installed on the upper side of the machine tool base 1. The protective cover 4 covers the part of the grinding mechanism 2 that grinds the electromagnetic flowmeter tube, so as to improve the safety of the device.

[0065] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A grinding device for electromagnetic flowmeter processing, comprising a machine tool base (1), characterized in that: A grinding mechanism (2) is arranged on the upper side of the machine tool base (1), and a plurality of grinding belts (7) are arranged on the grinding mechanism (2). A moving device (3) is arranged on one side of the grinding mechanism (2), and the number of particles on the grinding belt (7) gradually increases from the end close to the moving device (3) to the end away from the moving device (3), and the number of particles on the end of the grinding belt (7) away from the moving device (3) is the same. The moving device (3) moves on the upper side of the machine tool base (1), and an electromagnetic flow meter tube is arranged on the moving device (3). The moving device (3) drives the electromagnetic flow meter tube to move in a direction close to the grinding mechanism (2), and the grinding mechanism (2) drives the grinding belt (7) to rotate. In the process of the moving moving device (3) driving the electromagnetic flow meter tube to approach the grinding mechanism (2), one end of the rotating grinding mechanism (2) Inserted into the interior of the moving device (3), the grinding belt (7) on the grinding mechanism (2) grinds the inner wall of the moving device (3). When the grinding mechanism (2) grinds the inner wall of the electromagnetic flowmeter tube, the end of the grinding belt (7) with a smaller mesh number first grinds the inner wall of the electromagnetic flowmeter tube, and then the end of the grinding belt (7) with a larger mesh number grinds the electromagnetic flowmeter tube. After the interior of the electromagnetic flowmeter tube is in contact with all the parts with the same mesh number on the grinding belt (7), one end of the grinding mechanism (2) penetrates the electromagnetic flowmeter tube, and the moving device (3) stops moving. After the grinding mechanism (2) grinds the electromagnetic flowmeter tube, the moving device (3) moves in the opposite direction. At this time, the end of the grinding mechanism (2) that penetrates the electromagnetic flowmeter tube shrinks inward, so that the grinding belt (7) with a smaller mesh number does not contact the side wall of the electromagnetic flowmeter tube.

2. The grinding device for electromagnetic flowmeter processing according to claim 1, characterized in that: The grinding mechanism (2) comprises a positioning member (21) and a rotating grinding member (22) rotatably arranged inside the positioning member (21); one end of the rotating grinding member (22) extends out of the positioning member (21) and is provided with an end grinding member (23); the end grinding member (23) slides along the axis direction inside the rotating grinding member (22); the end grinding member (23) changes the size of one end of the grinding mechanism (2) during the movement; a driving mechanism is arranged inside the positioning member (21); the driving mechanism drives the rotating grinding member (22) and the end grinding member (23) to rotate.

3. The grinding device for electromagnetic flowmeter processing according to claim 2, characterized in that: The positioning member (21) comprises a positioning shell (211), an epitaxial column (213) is fixed on one side of the positioning shell (211), an axial cavity (214) is provided inside the epitaxial column (213), a mounting cavity (212) is provided inside the positioning shell (211), one end of the axial cavity (214) is connected to the mounting cavity (212), and the rotating polishing member (22) comprises a rotating column (222), and the rotating column (222) is rotatably arranged inside the mounting cavity (212).

4. The grinding device for electromagnetic flowmeter processing according to claim 3, characterized in that: A grinding main column (221) is fixed to one end of the rotating column (222) away from the positioning shell (211); an end groove (218) is provided at one end of the shaft cavity (214) away from the positioning shell (211); one end of the rotating column (222) is rotatably arranged in the end groove (218); a limiting rotating ring (223) is fixed to the rotating column (222); a limiting rotating groove (215) is arranged on the side wall of the shaft cavity (214); and the limiting rotating ring (223) is rotatably arranged inside the limiting rotating groove (215).

5. The grinding device for electromagnetic flowmeter processing according to claim 4, characterized in that: The end grinding member (23) comprises a sliding rod (232) and a piston disc (233) fixed on the sliding rod (232); a rod sliding groove (2211) is provided inside the grinding main column (221) and the rotating column (222); the sliding rod (232) is slidably arranged inside the rod sliding groove (2211); and an air cavity groove (2231) is provided inside the limiting rotating ring (223); the piston disc (233) is slidably arranged inside the air cavity groove (2231); and the side wall of the air cavity groove (2231) is in sliding contact with the arc-shaped side wall of the piston disc (233).

6. The grinding device for electromagnetic flowmeter processing according to claim 5, characterized in that: A plurality of ventilation holes (224) in communication with the air cavity groove (2231) are provided on both side walls of the limit rotating ring (223); ventilation ring grooves (216) are provided on both sides of the limit rotating groove (215); two gas connection columns (217) in communication with the ventilation ring groove (216) are provided on the extension column (213); the ventilation ring groove (216) is in communication with the limit rotating ring (223) through the ventilation holes (224); when one of the gas connection columns (217) transports gas inward, the gas enters the air cavity groove (2231) through the ventilation ring groove (216) to push the piston disc (233) to move in the air cavity groove (2231).

7. The grinding device for machining an electromagnetic flowmeter according to claim 6, characterized in that: A plurality of spiral grinding plates (231) are arranged in a circular array at one end of the sliding rod (232) away from the piston disc (233); one end of the spiral grinding plate (231) is hinged with a rotating hinge (228); the rotating hinge (228) is rotatably arranged on the side wall of the grinding main column (221) away from the rotating column (222); a hinge head (234) is fixed on the side wall of the end of the sliding rod (232) away from the piston disc (233); a pull rod (235) corresponding to the position of the plurality of spiral grinding plates (231) is hinged on the hinge head (234); the other end of the pull rod (235) is hinged with a clamping slider (237); an arc-shaped sliding groove (236) is provided on the inner side wall of the spiral grinding plate (231); the clamping slider (237) is slidably clamped in the arc-shaped sliding groove (236).

8. The grinding device for electromagnetic flowmeter processing according to claim 7, characterized in that: An extension tube (225) is fixed to one end of the grinding main column (221) away from the rotating column (222), and the hinge head (234) is slidably arranged inside the extension tube (225). A rod groove (226) corresponding to the position of the pull rod (235) is opened on the side wall of the extension tube (225), and one end of the pull rod (235) extends from the inside of the extension tube (225) to the outside of the extension tube (225) through the rod groove (226).

9. The grinding device for machining an electromagnetic flowmeter according to claim 8, characterized in that: A plurality of rod slide tubes (227) are fixed on the arc-shaped side wall of one end of the extension tube (225) away from the grinding main column (221), and a top slide rod (239) is slidably arranged in the rod slide tube (227). A top slide groove (238) adapted to one end of the top slide rod (239) is opened on the inner side wall of the spiral grinding plate (231), and one end of the top slide rod (239) is slidably inserted into the inside of the top slide groove (238), and a spring (2391) is fixedly installed on the top slide rod (239), and the spring (2391) pushes the top slide rod (239) in a direction away from the extension tube (225).

10. The grinding device for electromagnetic flowmeter processing according to claim 1, characterized in that: The moving device (3) comprises a sliding base (31), two rail bars (6) are fixed on the top of the machine tool base (1), the sliding base (31) is slidably arranged on the rail bars (6), a fixed mold frame (32) is fixedly installed on the upper side of the sliding base (31), a pressing frame (33) is hinged on the fixed mold frame (32), the fixed mold frame (32) and the pressing frame (33) are combined to form a slot for placing the electromagnetic flow meter tube, and a clamping plate (38) is fixed at one end of the pressing frame (33). ), a buckle (37) is installed on one side of the fixed mold frame (32), and the buckle (37) fixes the pressing frame (33) on the fixed mold frame (32) by squeezing the clamping plate (38), and a nut block (34) is fixed at the bottom of the sliding base (31), and a screw rod (35) is threadedly connected in the nut block (34), and the screw rod (35) is rotatably set on the machine tool base (1), and a servo motor (36) for driving the screw rod (35) to rotate is installed on the side wall of the machine tool base (1).

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