A metal pipe inner wall grinding device and method

Abstract

The present invention relates to the technical field of pipe grinding, and discloses a device and method for grinding the inner wall of a metal pipe, including a grinding box and a top plate arranged inside the grinding box. Two clamping mechanisms are arranged on the grinding box. The clamping mechanism includes a guide block fixedly installed on the top of the grinding box. A strip-shaped groove is formed in the grinding box. A screw rod and a limiting rod are rotatably installed in the strip-shaped groove. An active block is sleeved on the screw rod and the limiting rod. The active block is in threaded connection with the screw rod and is slidably connected with the limiting rod. It further includes: a gear is fixedly sleeved on the screw rod, and a toothed plate is arranged on the bottom inner wall of the strip-shaped groove. In the present invention, the clamping spring drives the grinding box to move and descend along the inclined surface of the top plate under the guiding action of the top plate. When the left side of the top plate is pushed against the left side of the pipe by the threaded driving rod, at this time, the bottom of the U-shaped clamping plate just presses on the pipe, and at the same time, the left and right sides and the top and bottom of the pipe are fixed.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe grinding equipment, and particularly to a device and method for grinding the inner wall of a metal pipe. Background Art

[0002] When processing metal pipes, according to the different lengths of the required pipes, it is often necessary to weld the pipes to make them longer. After the pipes are welded, it is necessary to grind the inner and outer walls of the pipes to remove the burrs on the pipes and improve the quality of the products. Since the outer surface of the pipe is in an exposed state, it is relatively convenient to grind. The welding protrusions on the inner side are generally difficult to detect, and the position is relatively narrow. The grinding process is time-consuming and laborious. Therefore, some manufacturers mainly grind the outer surface of the pipes during grinding, resulting in burrs or protrusions on the inner wall of the pipes, increasing the risk of internal corrosion of the pipes.

[0003] When grinding the inner wall of a metal pipe, since most pipes are circular, it is inconvenient to clamp them. When grinding the inner wall of a circular pipe, it is easy for the pipe to rotate with the grinding device, resulting in incomplete grinding of the inner wall and burrs remaining, affecting the grinding effect. Summary of the Invention

[0004] The purpose of the present invention is to provide a device and method for grinding the inner wall of a metal pipe to solve the problem that since most pipes are circular, it is inconvenient to clamp them, and when grinding the inner wall of a circular pipe, it is easy for the pipe to rotate with the grinding device, resulting in incomplete grinding of the inner wall and burrs remaining, affecting the grinding effect.

[0005] To solve the above technical problems, the present invention is realized through the following technical solutions:

[0006] The present invention is a device for grinding the inner wall of a metal pipe, including a grinding box and a top plate arranged inside the grinding box. Two clamping mechanisms are arranged on the grinding box. The clamping mechanism includes a guide block fixedly installed on the top of the grinding box. A strip-shaped groove is opened inside the grinding box. A screw rod and a limiting rod are rotatably installed in the strip-shaped groove. An active block is sleeved on the screw rod and the limiting rod. The active block is threadedly connected with the screw rod and slidably connected with the limiting rod. It further includes:

[0007] A gear is fixedly sleeved on the screw rod. A toothed plate is arranged on the bottom inner wall of the strip-shaped groove. A connecting rod is fixedly installed on the back of the toothed plate. The end of the connecting rod is fixedly connected with the top plate. The toothed plate is meshed with the gear. A telescopic rod is fixedly installed on the top of the active block. The top of the telescopic rod is fixedly installed with a U-shaped clamping plate. A clamping spring is sleeved on the telescopic rod. The top of the clamping spring is fixedly connected with the U-shaped clamping plate. The bottom of the clamping spring is fixedly connected with the active block. The top of the U-shaped clamping plate is in contact with the guide block.

[0008] Furthermore, a filtering mechanism is provided on the polishing box, and the filtering mechanism includes an arc-shaped groove for placement opened on the polishing box, a discharge trough is opened on the left side of the polishing box, a collecting box is fixedly installed on the left side of the polishing box, a filter plate drawer is slidably installed in the collecting box, and the left end of the filter plate drawer extends outside the collecting box.

[0009] Furthermore, a driving mechanism is provided on the front side of the polishing box, and the driving mechanism includes a strip mounting groove opened on the front side of the polishing box, a driving motor is fixedly installed on the right side of the polishing box, a threaded driving rod is rotatably installed in the strip mounting groove, the threaded driving rod passes through the strip mounting groove, and the right end of the threaded driving rod is fixedly connected to the output shaft of the driving motor, and strip blocks are fixedly installed on the front and back sides of the top plate, respectively, the two strip blocks respectively extend into the polishing box and are slidably connected with the polishing box, the corresponding front sides of the strip blocks extend into the strip mounting groove, the threaded driving rod passes through the strip blocks in the strip mounting groove and is threadedly connected to the strip block, a sliding sleeve is provided on the threaded driving rod, a fixed sleeve is provided on the threaded driving rod, an adaptive spring is provided on the threaded driving rod, the left end of the adaptive spring is fixedly connected to the fixed block, and the right end of the adaptive spring is fixedly connected to the slider.

[0010] Furthermore, the polishing box is provided with a propulsion mechanism, which includes a hollow tube rotatably mounted on the polishing box, the left end of the hollow tube extending into the polishing box, a plurality of strip clamps fixedly mounted on the hollow tube, the plurality of strip clamps all extending into the polishing box and being threadedly connected to the polishing box, a pulley 1 is provided in the polishing box, a pulley 2 is fixedly sleeved on the threaded driving rod, a synchronous belt is sleeved on the pulley 2 and the pulley 1, a plurality of slots are opened on the inner wall of the pulley 1, the plurality of slots are meshed with the strip clamps, two L-shaped fixed sliding rods are fixedly mounted on the front inner wall and the back inner wall of the polishing box, and the ends of the plurality of L-shaped fixed sliding rods close to each other are slidably connected to the pulley 1.

[0011] Furthermore, a grinding mechanism is provided on the hollow tube, and the grinding mechanism includes a grinding block and a cleaning plate fixedly mounted on the hollow tube, and a plurality of liquid spray holes are provided on the hollow tube. A rectangular frame is fixedly installed on the right side of the grinding box, and an L-shaped hollow frame is slidably installed in the rectangular frame. The left side of the L-shaped hollow frame is rotatably connected to the hollow tube, and the hollow tube is communicated with the L-shaped hollow frame. A liquid storage cavity is provided in the grinding box, and a through groove is provided in the grinding box, and the through grooves are communicated with the rectangular frame and the liquid storage cavity.

[0012] Further, a transmission mechanism is provided on the threaded drive rod. The transmission mechanism includes a cam fixedly installed at the left end of the threaded drive rod. A drive rod is rotatably installed on the left side of the grinding box. The right end of the drive rod extends into the liquid storage cavity. A drive plate is fixedly installed at the left end of the drive rod. A tapered block is fixedly installed on the left side of the drive plate. A drive spring is sleeved on the drive rod. The left end of the drive spring is fixedly connected to the drive plate, and the right end of the drive spring is fixedly connected to the grinding box.

[0013] Further, an adaptation mechanism is provided at the bottom of the collection box. The adaptation mechanism includes a liquid inlet pipe fixedly installed at the bottom of the collection box. The bottom end of the liquid inlet pipe extends into the liquid storage cavity. A perforated push box is fixedly installed at the right end of the drive rod. The perforated push box is slidably connected to the liquid storage cavity. Two telescopic springs are fixedly installed on the left inner wall of the perforated push box. The right ends of the two telescopic springs are fixedly installed with a sliding plate. The sliding plate is slidably connected to the perforated push box.

[0014] Further, for a metal pipe inner wall grinding device, the method steps are as follows:

[0015] S1: Place the pipe into the grinding box, then start the drive motor. The drive motor drives the threaded drive rod to rotate. The threaded drive rod drives the strip-shaped block to move towards the pipe. The strip-shaped block drives the top plate to move. The top plate drives the connecting rod to move. The connecting rod drives the toothed plate to move. The toothed plate drives the screw to rotate under the action of the gear. The screw drives the two movable blocks to move towards the pipe. The movable blocks drive the clamping spring to move. The clamping spring drives the C-shaped clamping plate to move and descend along the inclined surface of the guiding block under the guiding action of the guiding block. When the left side of the top plate driven by the threaded drive rod touches the left side of the pipe, at this time, the bottom of the C-shaped clamping plate just presses the pipe, and at the same time, the left and right sides and the upper and lower sides of the pipe are fixed, improving the stability of the pipe and preventing the pipe from rotating unstably when grinding the inner wall of the pipe;

[0016] S2: During the process of the threaded drive rod driving the strip-shaped block to move, it will contact the slider. The strip-shaped block will continuously push the slider to move. The slider will cause the adaptation spring to continuously undergo compressive deformation. When the top plate touches the pipe, at this time, the strip-shaped block leaves the thread. Under the action of the compressive elastic force of the adaptation spring, it will push the slider to continuously顶住 the strip-shaped block. Since the threaded drive rod is still rotating continuously, it will force the strip-shaped block to be in a semi-disengaged state from the thread. At this time, the top plate can be kept顶住 the pipe state, and it will not affect the continuous rotation of the threaded drive rod. After grinding, the drive motor can be reversed. At this time, under the thrust of the adaptation spring, the strip-shaped block will be pushed back onto the thread of the threaded drive rod to release the fixation of the pipe;

[0017] S3: During the rotation of the threaded drive rod, pulley two and the synchronous belt drive pulley one to rotate. Under the meshing action of a number of card slots and strip-shaped clamping plates on pulley one, the hollow tube is driven to rotate. Since threaded grooves are provided at the mutually remote ends of the strip-shaped clamping plates, when the hollow tube drives the strip-shaped clamping plates to rotate, the strip-shaped clamping plates drive the hollow tube to move towards the direction close to the pipe material. The hollow tube will rotate into the pipe material under the threaded connection between the strip-shaped clamping plates and the grinding box. When the threaded drive rod rotates, it drives the cam to rotate. When the cam contacts the tapered block, under the action of the inclined surface of the tapered block, the cam causes the tapered block to push the transmission plate towards the direction close to the grinding box. The transmission plate drives the transmission rod to move, and the transmission rod drives the liquid injection hole pushing box to move. The liquid injection hole pushing box pushes the coolant in the liquid storage cavity into the hollow tube, and the cooling water sprays out from a number of liquid spraying holes. The hollow tube drives the grinding block to rotate to grind the inner wall of the pipe material. The cooling water will reduce the heat generated during the grinding of the pipe material during the grinding process, preventing the pipe material from deforming due to high temperature. During the grinding process, the cleaning plate will push out the debris and cooling water in the pipe material and flow them into the collection box;

[0018] S4: The cooling water and impurities flowing into the collection box will pass through the filter plate drawer, and the impurity particles will be filtered by the filter plate drawer. The clean cooling water will flow into the liquid storage cavity along the liquid inlet pipe. After the cam leaves the tapered block, the transmission plate will be pushed back under the elastic force of the transmission spring. At this time, the transmission plate will drive the transmission rod to pull the liquid injection hole pushing box back in the direction away from the pipe material. Since the filtered cooling water flows into the liquid storage cavity, during the return process of the liquid injection hole pushing box, it will be affected by the water pressure on the left side of the liquid injection hole pushing box. The cooling water on the left side of the liquid injection hole pushing box will enter the liquid injection hole pushing box and push the sliding plate to make the sliding plate leave the liquid injection hole pushing box. At this time, the cooling water will return to the right side of the liquid injection hole pushing box through the gap between the sliding plate and the liquid injection hole pushing box for filling, realizing continuous recycling.

[0019] The present invention has the following beneficial effects:

[0020] (1) For a device for grinding the inner wall of a metal pipe material in the present invention, place the pipe material into the grinding box, and then start the drive motor. The drive motor drives the threaded drive rod to rotate. The threaded drive rod drives the strip-shaped block to move towards the direction close to the pipe material. The strip-shaped block drives the top plate to move, the top plate drives the connecting rod to move, the connecting rod drives the toothed plate to move. Under the action of the gear, the toothed plate drives the screw rod to rotate. The screw rod drives the two movable blocks to move towards the direction close to the pipe material. The movable blocks drive the clamping spring to move, and the clamping spring drives the U-shaped clamping plate to move and descend along the inclined surface of the guiding block under the guiding action of the guiding block. When the left side of the top plate driven by the threaded drive rod touches the left side of the pipe material, at this time, the bottom of the U-shaped clamping plate just presses the pipe material, and at the same time, the left and right sides and the top and bottom of the pipe material are fixed;

[0021] (2) The present invention provides a device for grinding the inner wall of a metal pipe. When the threaded driving rod drives the strip block to move, the strip block contacts the slider. The strip block continuously pushes the slider to move. The slider causes the adaptive spring to continuously compress and deform. When the top plate contacts the pipe, the strip block leaves the thread. Under the action of the compression elastic force of the adaptive spring, the slider is pushed to continuously support the strip block. Since the threaded driving rod is still rotating continuously, the strip block is forced to be in a semi-disengaged state of the thread. At this time, the top plate can keep supporting the pipe and will not affect the continuous rotation of the threaded driving rod. After the grinding is completed, the driving motor can be reversed. At this time, the strip block will be pushed back onto the thread of the threaded driving rod under the thrust of the adaptive spring to release the fixation of the pipe.

[0022] (3) The present invention provides a device for grinding the inner wall of a metal pipe. During the rotation of a threaded driving rod, a pulley 2 and a synchronous belt drive a pulley 1 to rotate. The pulley 1 drives a hollow pipe to rotate under the meshing action of a plurality of grooves and a strip-shaped clip. Since a thread groove is provided at one end of the plurality of strip-shaped clips that are away from each other, when the hollow pipe drives the plurality of strip-shaped clips to rotate, the strip-shaped clip will drive the hollow pipe to move toward the pipe. The hollow pipe will rotate into the pipe under the action of the threaded connection between the strip-shaped clip and the grinding box. When the driving rod rotates, the cam will be driven to rotate. When the cam contacts the conical block, under the action of the inclined surface of the conical block, the cam will make the conical block push the transmission plate to move towards the grinding box. The transmission plate drives the transmission rod to move. The transmission rod drives the push box with holes to move. The push box with holes pushes the coolant in the liquid storage cavity into the hollow tube. The cooling water will be sprayed out from several spray holes. The hollow tube drives the grinding block to rotate to grind the inner wall of the pipe. During the grinding process, the cleaning plate will push out the debris and cooling water in the pipe at the same time and flow them into the collection box.

[0023] (4) The present invention provides a metal pipe inner wall grinding device. The cooling water and impurities flowing into the collection box will pass through the filter plate drawer, and the impurity particles will be filtered out by the filter plate drawer. The clean cooling water will flow into the liquid storage chamber along the liquid inlet pipe. After the cam leaves the conical block, the transmission plate will push the transmission plate back under the elastic force of the transmission spring. At this time, the transmission plate will drive the transmission rod to pull the perforated push box back in the direction away from the pipe. Since the filtered cooling water flows into the liquid storage chamber, it will be affected by the water pressure on the left side of the perforated push box during the return process of the perforated push box. The cooling water on the left side of the perforated push box will enter the perforated push box and push the sliding plate to make the sliding plate leave the perforated push box. At this time, the cooling water will return from the gap between the sliding plate and the perforated push box to the right side of the perforated push box for filling.

[0024] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a partial cross-sectional structural schematic diagram of the present invention;

[0028] Figure 3 For the present invention Figure 2 A is a schematic diagram of the enlarged structure of the middle part;

[0029] Figure 4 For the present invention Figure 2 A schematic diagram of the enlarged structure of B;

[0030] Figure 5 It is a schematic diagram of the back cross-sectional structure of the present invention;

[0031] Figure 6 For the present invention Figure 2 Schematic diagram of the enlarged structure of C in the middle;

[0032] Figure 7 For the present invention Figure 5 Schematic diagram of the enlarged structure of D in the middle;

[0033] Figure 8 It is a schematic diagram of the method steps of the present invention.

[0034] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0035] In the figure: 1. Grinding box; 100. Clamping mechanism; 101. Guide block; 102. Top plate; 103. Strip-shaped groove; 104. Screw; 105. Limit rod; 106. Movable block; 107. Gear; 108. Rack; 109. Connecting rod; 110. Telescopic rod; 111. C-shaped clamping plate; 112. Clamping spring; 2. Filter mechanism; 201. Placing arc groove; 202. Discharge chute; 204. Collection box; 205. Filter plate drawer; 3. Driving mechanism; 301. Strip-shaped installation groove; 302. Driving motor; 303. Threaded driving rod; 304. Strip-shaped block; 305. Slide block; 306. Fixed block; 307. Adaptation spring; 4. Pushing mechanism; 401. Hollow tube; 402. Strip-shaped clamping plate; 403. Pulley I; 404. Pulley II; 405. Synchronous belt; 406. Card slot; 407. L-shaped fixed sliding rod; 5. Grinding mechanism; 501. Grinding block; 502. Cleaning plate; 503. Liquid spraying hole; 504. Rectangular frame; 505. L-shaped hollow frame; 506. Liquid storage cavity; 507. Through groove; 6. Transmission mechanism; 601. Cam; 602. Transmission rod; 603. Transmission plate; 604. Tapered block; 605. Transmission spring; 7. Adaptation mechanism; 701. Liquid inlet pipe; 702. Perforated pushing box; 703. Telescopic spring; 704. Sliding plate. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] Please refer to Figure 1-Figure 8 As shown in the figure, the present invention is a device for grinding the inner wall of a metal pipe, including a grinding box 1 and a top plate 102 arranged in the grinding box 1. Two clamping mechanisms 100 are arranged on the grinding box 1. The clamping mechanism 100 includes a guide block 101 fixedly installed on the top of the grinding box 1. A strip-shaped groove 103 is opened in the grinding box 1. A screw 104 and a limit rod 105 are rotatably installed in the strip-shaped groove 103. A movable block 106 is sleeved on the screw 104 and the limit rod 105. The movable block 106 is threadedly connected to the screw 104, and the movable block 106 is slidably connected to the limit rod 105. Further included are:

[0038] A gear 107 is fixedly sleeved on the screw rod 104. A toothed plate 108 is arranged on the bottom inner wall of the strip-shaped groove 103. A connecting rod 109 is fixedly installed on the back of the toothed plate 108. The end of the connecting rod 109 is fixedly connected to the top plate 102. The toothed plate 108 meshes with the gear 107. A telescopic rod 110 is fixedly installed on the top of the movable block 106. The top end of the telescopic rod 110 is fixedly installed with a U-shaped clamping plate 111. A clamping spring 112 is sleeved on the telescopic rod 110. The top end of the clamping spring 112 is fixedly connected to the U-shaped clamping plate 111. The bottom end of the clamping spring 112 is fixedly connected to the movable block 106. The top end of the U-shaped clamping plate 111 contacts the guide block 101.

[0039] As Figure 1 shown, a filtering mechanism 2 is arranged on the grinding box 1. The filtering mechanism 2 includes a placing arc-shaped groove 201 opened on the grinding box 1. A discharge slot 202 is opened on the left side of the grinding box 1. A collecting box 204 is fixedly installed on the left side of the grinding box 1. A filter plate drawer 205 is slidably installed in the collecting box 204. The left end of the filter plate drawer 205 extends outside the collecting box 204.

[0040] The cooling water and impurities flowing into the collecting box 204 will pass through the filter plate drawer 205, and the impurity particles will be filtered by the filter plate drawer 205, thereby improving the purity of the cooling water.

[0041] As Figure 1 and Figure 4 shown, a driving mechanism 3 is arranged on the front of the grinding box 1. The driving mechanism 3 includes a strip-shaped installation groove 301 opened on the front of the grinding box 1. A driving motor 302 is fixedly installed on the right side of the grinding box 1. A threaded driving rod 303 is rotatably installed in the strip-shaped installation groove 301. The threaded driving rod 303 penetrates through the strip-shaped installation groove 301. The right end of the threaded driving rod 303 is fixedly connected to the output shaft of the driving motor 302. Strip-shaped blocks 304 are respectively fixedly installed on the front and back of the top plate 102. The two strip-shaped blocks 304 respectively extend into the grinding box 1 and are slidably connected to the grinding box 1. The front of the corresponding strip-shaped block 304 extends into the strip-shaped installation groove 301. The threaded driving rod 303 penetrates through the strip-shaped block 304 in the strip-shaped installation groove 301 and is threadedly connected to the strip-shaped block 304. A slider 305 is slidably sleeved on the threaded driving rod 303. A fixed block 306 is fixedly sleeved on the threaded driving rod 303. An adaptation spring 307 is sleeved on the threaded driving rod 303. The left end of the adaptation spring 307 is fixedly connected to the fixed block 306. The right end of the adaptation spring 307 is fixedly connected to the slider 305.

[0042] When the threaded driving rod 303 drives the bar block 304 to move, it will contact the slider 305, and the bar block 304 will continue to push the slider 305 to move, and the slider 305 will cause the adaptive spring 307 to continue to compress and deform. When the top plate 102 contacts the pipe, the bar block 304 leaves the thread, and the slider 305 will be pushed to continuously support the bar block 304 under the action of the compression elastic force of the adaptive spring 307. Since the threaded driving rod 303 is still in continuous rotation, the bar block 304 will be forced to be in a semi-disengaged state of the thread. At this time, the top plate 102 can keep supporting the pipe and will not affect the continuous rotation of the threaded driving rod 303. After the grinding is completed, the driving motor 302 can be reversed. At this time, the bar block 304 will be pushed back onto the thread of the threaded driving rod 303 under the thrust of the adaptive spring 307 to release the fixation of the pipe.

[0043] like Figure 6 As shown, the polishing box 1 is provided with a propulsion mechanism 4, which includes a hollow tube 401 rotatably mounted on the polishing box 1, the left end of the hollow tube 401 extends into the polishing box 1, a plurality of strip card plates 402 are fixedly mounted on the hollow tube 401, the plurality of strip card plates 402 all extend into the polishing box 1 and are threadedly connected with the polishing box 1, a pulley 1 403 is arranged in the polishing box 1, a pulley 2 404 is fixedly sleeved on the threaded driving rod 303, a synchronous belt 405 is sleeved on the pulley 2 404 and the pulley 1 403, a plurality of slots 406 are opened on the inner wall of the pulley 1 403, the plurality of slots 406 are meshed with the strip card plates 402, two L-shaped fixed slide bars 407 are fixedly mounted on the front inner wall and the back inner wall of the polishing box 1, and the ends of the plurality of L-shaped fixed slide bars 407 close to each other are slidably connected with the pulley 1 403.

[0044] During the rotation of the threaded driving rod 303, the pulley 2 404 and the synchronous belt 405 will drive the pulley 1 403 to rotate, and the pulley 1 403 will drive the hollow tube 401 to rotate under the meshing action of the plurality of slots 406 and the strip clamping plate 402. Since the threaded grooves are provided at one end of the plurality of strip clamping plates 402 which are away from each other, when the hollow tube 401 drives the plurality of strip clamping plates 402 to rotate, the strip clamping plate 402 will drive the hollow tube 401 to move in the direction close to the pipe, and the hollow tube 401 will rotate into the pipe under the action of the threaded connection between the strip clamping plate 402 and the polishing box 1.

[0045] like Figure 5 and Figure 6As shown, a grinding mechanism 5 is provided on the hollow tube 401, and the grinding mechanism 5 includes a grinding block 501 and a cleaning plate 502 fixedly mounted on the hollow tube 401, and a plurality of liquid spray holes 503 are provided on the hollow tube 401. A rectangular frame 504 is fixedly installed on the right side of the grinding box 1, and an L-shaped hollow frame 505 is slidably installed in the rectangular frame 504. The left side of the L-shaped hollow frame 505 is rotatably connected to the hollow tube 401, and the hollow tube 401 is communicated with the L-shaped hollow frame 505. A liquid storage chamber 506 is provided in the grinding box 1, and a through groove 507 is provided in the grinding box 1, and the through groove 507 is communicated with the rectangular frame 504 and the liquid storage chamber 506.

[0046] Cooling water will be sprayed out from a plurality of spray holes 503 , and the hollow tube 401 drives the grinding block 501 to rotate and grind the inner wall of the pipe. During the grinding process, the cleaning plate 502 will push out the debris and cooling water in the pipe at the same time and flow them into the collection box 204 .

[0047] like Figure 7 As shown, a transmission mechanism 6 is arranged on the threaded driving rod 303, and the transmission mechanism 6 includes a cam 601 fixedly mounted on the left end of the threaded driving rod 303, a transmission rod 602 is rotatably mounted on the left side of the polishing box 1, and the right end of the transmission rod 602 extends into the liquid storage chamber 506, a transmission plate 603 is fixedly mounted on the left end of the transmission rod 602, and a conical block 604 is fixedly mounted on the left side of the transmission plate 603, a transmission spring 605 is sleeved on the transmission rod 602, the left end of the transmission spring 605 is fixedly connected to the transmission plate 603, and the right end of the transmission spring 605 is fixedly connected to the polishing box 1.

[0048] When the cam 601 contacts the conical block 604 , under the action of the inclined surface of the conical block 604 , the cam 601 causes the conical block 604 to push the transmission plate 603 to move toward the direction close to the polishing box 1 , and the transmission plate 603 drives the transmission rod 602 to move.

[0049] like Figure 5 and Figure 7 As shown, an adaption mechanism 7 is provided at the bottom of the collecting box 204, and the adaption mechanism 7 includes a liquid inlet tube 701 fixedly installed at the bottom of the collecting box 204, and the bottom end of the liquid inlet tube 701 extends into the liquid storage chamber 506, and a push box 702 with a hole is fixedly installed at the right end of the transmission rod 602, and the push box 702 with a hole is slidably connected to the liquid storage chamber 506, and two telescopic springs 703 are fixedly installed on the left inner wall of the push box 702 with a hole, and a sliding plate 704 is fixedly installed on the right end of the two telescopic springs 703, and the sliding plate 704 is slidably connected to the push box 702 with a hole.

[0050] During the return process of the perforated push box 702, it is affected by the water pressure on the left side of the perforated push box 702. The cooling water on the left side of the perforated push box 702 will enter the perforated push box 702 and push the sliding plate 704 to make the sliding plate 704 leave the perforated push box 702. At this time, the cooling water will return to the right side of the perforated push box 702 through the gap between the sliding plate 704 and the perforated push box 702 for filling.

[0051] As Figure 1-8 shown, a metal pipe inner wall grinding device has the following method steps:

[0052] S1: Place the pipe into the grinding box 1, then start the drive motor 302. The drive motor 302 drives the threaded drive rod 303 to rotate. The threaded drive rod 303 drives the strip block 304 to move towards the pipe. The strip block 304 drives the top plate 102 to move. The top plate 102 drives the connecting rod 109 to move. The connecting rod 109 drives the toothed plate 108 to move. The toothed plate 108 drives the screw rod 104 to rotate under the action of the gear 107. The screw rod 104 drives the two movable blocks 106 to move towards the pipe. The movable blocks 106 drive the clamping spring 112 to move. The clamping spring 112 drives the C-shaped clamping plate 111 to move and descend along the inclined surface of the guide block 101 under the guiding action of the guide block 101. When the left side of the top plate 102 driven by the threaded drive rod 303 touches the left side of the pipe, at this time, the bottom of the C-shaped clamping plate 111 just presses the pipe, and at the same time, the left and right sides and the upper and lower sides of the pipe are fixed, improving the stability of the pipe and preventing the pipe from rotating unstably during the grinding of the inner wall of the pipe;

[0053] S2: During the process of the threaded drive rod 303 driving the strip block 304 to move, it will contact the slider 305. The strip block 304 will continuously push the slider 305 to move. The slider 305 will cause the adaptive spring 307 to continuously undergo compressive deformation. When the top plate 102 touches the pipe, at this time, the strip block 304 leaves the thread. Under the action of the compressive elastic force of the adaptive spring 307, it will push the slider 305 to continuously hold the strip block 304. Since the threaded drive rod 303 is still rotating continuously, it will force the strip block 304 to be in a semi-disengaged state from the thread. At this time, the top plate 102 can be kept in contact with the pipe, and it will not affect the continuous rotation of the threaded drive rod 303. After grinding, the drive motor 302 can be reversed. At this time, under the thrust of the adaptive spring 307, the strip block 304 will be pushed back onto the thread of the threaded drive rod 303 to release the fixation of the pipe;

[0054] S3: During the rotation of the threaded driving rod 303, the pulley 404 and the synchronous belt 405 drive the pulley 403 to rotate. The pulley 403 drives the hollow tube 401 to rotate under the meshing action of the plurality of slots 406 and the strip card plate 402. Since the threaded slots are arranged at one end of the plurality of strip card plates 402 which are away from each other, when the hollow tube 401 drives the plurality of strip card plates 402 to rotate, the strip card plate 402 drives the hollow tube 401 to move toward the direction close to the pipe. The hollow tube 401 rotates into the pipe under the action of the threaded connection between the strip card plate 402 and the polishing box 1. When the threaded driving rod 303 rotates, the cam 601 is driven to rotate. When the cam 601 contacts the conical block 60 At 4, under the action of the inclined surface of the conical block 604, the cam 601 will make the conical block 604 push the transmission plate 603 to move towards the direction close to the grinding box 1, the transmission plate 603 drives the transmission rod 602 to move, the transmission rod 602 drives the perforated push box 702 to move, the perforated push box 702 pushes the coolant in the liquid storage chamber 506 into the hollow tube 401, the cooling water will be sprayed out from a plurality of spray holes 503, the hollow tube 401 drives the grinding block 501 to rotate to grind the inner wall of the pipe, the cooling water will reduce the heat generated during the grinding process of the pipe to avoid deformation of the pipe due to high temperature, and the cleaning plate 502 will push out the debris and cooling water in the pipe at the same time during the grinding process and flow them into the collection box 204;

[0055] S4: The cooling water and impurities flowing into the collection box 204 will pass through the filter plate drawer 205, and the impurity particles will be filtered out by the filter plate drawer 205, and the clean cooling water will flow into the liquid storage chamber 506 along the liquid inlet pipe 701. After the cam 601 leaves the conical block 604, the transmission plate 603 will push the transmission plate 603 back under the elastic force of the transmission spring 605. At this time, the transmission plate 603 will drive the transmission rod 602 to pull the perforated push box 702 back in the direction away from the pipe. The filtered cooling water flows into the liquid storage chamber 506, and during the return process of the perforated push box 702, it will be affected by the water pressure on the left side of the perforated push box 702. The cooling water on the left side of the perforated push box 702 will enter the perforated push box 702 and push the sliding plate 704 to make the sliding plate 704 leave the perforated push box 702. At this time, the cooling water will return from the gap between the sliding plate 704 and the perforated push box 702 to the right side of the perforated push box 702 for filling, thereby realizing continuous recycling.

[0056] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A device for grinding the inner wall of a metal pipe, comprising a grinding box (1) and a top plate (102) arranged in the grinding box (1), wherein the grinding box (1) is provided with two clamping mechanisms (100), wherein the clamping mechanism (100) comprises a guide block (101) fixedly mounted on the top of the grinding box (1), wherein a strip groove (103) is provided in the grinding box (1), wherein a screw rod (104) and a limit rod (105) are rotatably mounted in the strip groove (103), wherein a movable block (106) is sleeved on the screw rod (104) and the limit rod (105), wherein the movable block (106) is threadedly connected to the screw rod (104), and wherein the movable block (106) is slidably connected to the limit rod (105), wherein the movable block (106) is threadedly connected to the screw rod (104), and wherein the movable block (106) is slidably connected to the limit rod (105), wherein the movable block (106) is threadedly connected to the limit rod (105 ... It further includes: A gear (107) is fixedly sleeved on the screw rod (104). A toothed plate (108) is arranged on the bottom inner wall of the strip-shaped groove (103). A connecting rod (109) is fixedly installed on the back of the toothed plate (108). The end of the connecting rod (109) is fixedly connected to the top plate (102). The toothed plate (108) meshes with the gear (107). A telescopic rod (110) is fixedly installed on the top of the movable block (106). The top end of the telescopic rod (110) is fixedly installed with a U-shaped clamping plate (111). A clamping spring (112) is sleeved on the telescopic rod (110). The top end of the clamping spring (112) is fixedly connected to the U-shaped clamping plate (111). The bottom end of the clamping spring (112) is fixedly connected to the movable block (106). The top end of the U-shaped clamping plate (111) contacts the guiding block (101). A filtering mechanism (2) is arranged on the grinding box (1). The filtering mechanism (2) includes a placing arc-shaped groove (201) opened on the grinding box (1). A discharge groove (202) is opened on the left side of the grinding box (1). A collecting box (204) is fixedly installed on the left side of the grinding box (1). A filter plate drawer (205) is slidably installed in the collecting box (204). The left end of the filter plate drawer (205) extends outside the collecting box (204). A driving mechanism (3) is arranged on the front of the grinding box (1). The driving mechanism (3) includes a strip-shaped installation groove (301) opened on the front of the grinding box (1). A driving motor (302) is fixedly installed on the right side of the grinding box (1). A threaded driving rod (303) is rotatably installed in the strip-shaped installation groove (301). The threaded driving rod (303) penetrates through the strip-shaped installation groove (301). The right end of the threaded driving rod (303) is fixedly connected to the output shaft of the driving motor (302). Strip-shaped blocks (304) are respectively fixedly installed on the front and back of the top plate (102). The two strip-shaped blocks (304) respectively extend into the grinding box (1) and are slidably connected to the grinding box (1). The front of the corresponding strip-shaped block (304) extends into the strip-shaped installation groove (301). The threaded driving rod (303) penetrates through the strip-shaped block (304) in the strip-shaped installation groove (301) and is threadedly connected to the strip-shaped block (304). A slider (305) is slidably sleeved on the threaded driving rod (303). A fixed block (306) is fixedly sleeved on the threaded driving rod (303). An adaptation spring (307) is sleeved on the threaded driving rod (303). The left end of the adaptation spring (307) is fixedly connected to the fixed block (306). The right end of the adaptation spring (307) is fixedly connected to the slider (305).

2. A metal pipe inner wall grinding device according to claim 1, characterized in that: The polishing box (1) is provided with a propulsion mechanism (4), the propulsion mechanism (4) comprising a hollow tube (401) rotatably mounted on the polishing box (1), the left end of the hollow tube (401) extending into the polishing box (1), a plurality of strip-shaped card plates (402) being fixedly mounted on the hollow tube (401), the plurality of strip-shaped card plates (402) all extending into the polishing box (1) and being threadedly connected to the polishing box (1), a pulley (403) being provided in the polishing box (1), and a pulley (403) being fixedly mounted on the threaded drive rod (303). A pulley 2 (404) is sleeved thereon, and a synchronous belt (405) is sleeved on the pulley 2 (404) and the pulley 1 (403). A plurality of slots (406) are opened on the inner wall of the pulley 1 (403), and the plurality of slots (406) are meshed with the strip card plate (402). Two L-shaped fixed slide bars (407) are fixedly mounted on the front inner wall and the back inner wall of the polishing box (1), and the ends of the plurality of L-shaped fixed slide bars (407) close to each other are slidably connected to the pulley 1 (403).

3. A metal pipe inner wall grinding device according to claim 2, characterized in that: The hollow tube (401) is provided with a grinding mechanism (5), the grinding mechanism (5) comprising a grinding block (501) and a cleaning plate (502) fixedly mounted on the hollow tube (401); the hollow tube (401) is provided with a plurality of liquid spray holes (503); a rectangular frame (504) is fixedly mounted on the right side of the grinding box (1); an L-shaped hollow frame (505) is slidably mounted inside the rectangular frame (504); the left side of the L-shaped hollow frame (505) is rotatably connected to the hollow tube (401); the hollow tube (401) and the L-shaped hollow frame (505) are in communication; a liquid storage chamber (506) is provided inside the grinding box (1); a through slot (507) is provided inside the grinding box (1); the through slot (507) is in communication with the rectangular frame (504) and the liquid storage chamber (506).

4. A metal pipe inner wall grinding device according to claim 3, characterized in that: The threaded drive rod (303) is provided with a transmission mechanism (6), the transmission mechanism (6) comprising a cam (601) fixedly mounted on the left end of the threaded drive rod (303); a transmission rod (602) is rotatably mounted on the left side of the polishing box (1); the right end of the transmission rod (602) extends into the liquid storage chamber (506); a transmission plate (603) is fixedly mounted on the left end of the transmission rod (602); a conical block (604) is fixedly mounted on the left side of the transmission plate (603); a transmission spring (605) is sleeved on the transmission rod (602); the left end of the transmission spring (605) is fixedly connected to the transmission plate (603); and the right end of the transmission spring (605) is fixedly connected to the polishing box (1).

5. A metal pipe inner wall grinding device according to claim 4, characterized in that: A fitting mechanism (7) is provided at the bottom of the collection box (204). The fitting mechanism (7) includes a liquid inlet pipe (701) fixedly installed at the bottom of the collection box (204). The bottom end of the liquid inlet pipe (701) extends into the liquid storage cavity (506). A perforated push box (702) is fixedly installed at the right end of the transmission rod (602). The perforated push box (702) is slidably connected to the liquid storage cavity (506). Two telescopic springs (703) are fixedly installed on the left inner wall of the perforated push box (702). The right ends of the two telescopic springs (703) are fixedly installed with a sliding plate (704). The sliding plate (704) is slidably connected to the perforated push box (702).

6. A method for using a metal pipe inner wall grinding device, using the metal pipe inner wall grinding device as claimed in claim 5, characterized in that: The method steps are as follows: S1: Place the pipe into the grinding box (1), and then start the drive motor (302). The drive motor (302) drives the threaded drive rod (303) to rotate. The threaded drive rod (303) drives the strip-shaped block (304) to move towards the pipe. The strip-shaped block (304) drives the top plate (102) to move. The top plate (102) drives the connecting rod (109) to move. The connecting rod (109) drives the toothed plate (108) to move. The toothed plate (108) drives the screw rod (104) to rotate under the action of the gear (107). The screw rod (104) drives the two movable blocks (106) to move towards the pipe. The movable blocks (106) drive the clamping spring (112) to move. The clamping spring (112) drives the U-shaped clamping plate (111) to move and descend along the inclined surface of the guide block (101) under the guiding action of the guide block (101). When the left side of the top plate (102) driven by the threaded drive rod (303) touches the left side of the pipe, at this time, the bottom of the U-shaped clamping plate (111) just presses the pipe, and at the same time, the left and right sides and the top and bottom of the pipe are fixed, improving the stability of the pipe and preventing the pipe from rotating unstably when the inner wall of the pipe is ground; S2: During the process of the threaded drive rod (303) driving the strip-shaped block (304) to move, it will contact the slider (305). The strip-shaped block (304) will continuously push the slider (305) to move. The slider (305) will cause the adaptive spring (307) to continuously undergo compressive deformation. When the top plate (102) touches the pipe, at this time, the strip-shaped block (304) leaves the thread. Under the action of the compressive elastic force of the adaptive spring (307), it will push the slider (305) to continuously hold the strip-shaped block (304). Since the threaded drive rod (303) is still rotating continuously, it will force the strip-shaped block (304) to be in a semi-disengaged state from the thread. At this time, the top plate (102) can be kept in contact with the pipe state, and it will not affect the continuous rotation of the threaded drive rod (303). After grinding, the drive motor (302) can be reversed. At this time, under the thrust of the adaptive spring (307), the strip-shaped block (304) will be pushed back onto the thread of the threaded drive rod (303) to release the fixation of the pipe; S3: During the rotation of the threaded driving rod (303), the pulley 2 (404) and the synchronous belt (405) drive the pulley 1 (403) to rotate. The pulley 1 (403) drives the hollow tube (401) to rotate under the meshing action of the plurality of grooves (406) and the strip clamping plate (402). Since the plurality of strip clamping plates (402) are provided with a threaded groove at one end away from each other, when the hollow tube (401) drives the plurality of strip clamping plates (402) to rotate, the strip clamping plate (402) drives the hollow tube (401) to move in a direction close to the pipe. The hollow tube (401) rotates into the pipe under the threaded connection between the strip clamping plate (402) and the polishing box (1). When the threaded driving rod (303) rotates, the cam (601) is driven to rotate. When the cam (601) contacts the conical block ( When the conical block (604) is in contact with the conical block (604), the cam (601) causes the conical block (604) to push the transmission plate (603) to move in a direction close to the grinding box (1), the transmission plate (603) drives the transmission rod (602) to move, the transmission rod (602) drives the perforated push box (702) to move, the perforated push box (702) pushes the coolant in the liquid storage chamber (506) into the hollow tube (401), the cooling water is sprayed out from a plurality of spray holes (503), the hollow tube (401) drives the grinding block (501) to rotate to grind the inner wall of the pipe, the cooling water reduces the heat generated during the grinding process, and prevents the pipe from being deformed due to high temperature, and the cleaning plate (502) discharges the debris and cooling water in the pipe at the same time during the grinding process and flows them into the collection box (204); S4: The cooling water and impurities flowing into the collection box (204) will pass through the filter plate drawer (205), and the impurity particles will be filtered out by the filter plate drawer (205). The clean cooling water will flow into the liquid storage chamber (506) along the liquid inlet pipe (701). After the cam (601) leaves the conical block (604), the transmission plate (603) will push the transmission plate (603) back under the elastic force of the transmission spring (605). At this time, the transmission plate (603) will drive the transmission rod (602) to pull the perforated push box (702) back in a direction away from the pipe, and the The filtered cooling water flows into the liquid storage chamber (506). During the process of the perforated push box (702) returning, the cooling water will be affected by the water pressure on the left side of the perforated push box (702). The cooling water on the left side of the perforated push box (702) will enter the perforated push box (702) and push the sliding plate (704) so ​​that the sliding plate (704) leaves the perforated push box (702). At this time, the cooling water will return to the right side of the perforated push box (702) from the gap between the sliding plate (704) and the perforated push box (702) to be filled, thereby achieving continuous recycling.

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