An internal grinding device for die-cast pipe fittings
The adaptive grinding device solves the problem of grinding the complex curved surface of the inner wall of die-cast pipe fittings, achieving efficient and precise inner wall processing, improving quality and efficiency, and avoiding tool damage and environmental pollution.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANDONG LUOKAIZHONGCHENG INTELLIGENT TECH CO LTD
- Filing Date
- 2026-03-23
- Publication Date
- 2026-06-02
AI Technical Summary
Traditional rigid grinding tools are difficult to adapt to the complex curved surface structure of the inner cavity of die-cast pipe fittings, resulting in insufficient or excessive grinding damage. At the same time, the high temperature and metal debris accumulation in the enclosed space affect the processing quality and efficiency.
An internal grinding device for die-cast pipe fittings was designed. By cooperating with the vertical moving block and the lead screw track, the device utilizes a hydraulic transmission system and elastic plates to adapt to changes in the curvature of the inner wall of the pipe fitting. Combined with non-contact magnetic coupling, it achieves a water spraying function, realizing adaptive grinding and efficient cooling.
It achieves uniform and efficient grinding of the inner wall of pipe fittings, improves processing accuracy and surface quality, avoids tool damage, extends service life, and improves the working environment.
Smart Images
Figure CN122125564A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of pipe grinding technology, specifically to a grinding device for the inside of die-cast pipe fittings. Background Technology
[0002] The inner walls of pipe fittings produced by die casting generally have uneven defects such as flash and parting lines. Traditional rigid grinding tools are difficult to adapt to the complex curved surface structure and dimensional tolerances of the inner cavity of the pipe fittings, often resulting in insufficient or excessive grinding damage. At the same time, grinding operations in a closed space are prone to generating high temperatures and metal chip accumulation, which seriously affects processing quality, tool life and production efficiency. Therefore, there is an urgent need to develop an automated grinding solution that can adapt to the inner wall contour and integrate efficient cooling and chip removal functions.
[0003] Patent CN219255020U discloses an internal grinding device for pipe fittings, comprising: a bracket; a load-bearing assembly that can be lifted and installed on the top of the bracket; the load-bearing assembly includes a lifting seat, a lifting cylinder, a translation plate, a load-bearing plate, and a push-pull cylinder; the end of the push-pull cylinder away from the lifting seat is also used to hinge the top of the load-bearing plate, and the bottom end of the load-bearing plate is hinged to the translation plate; and a grinding assembly installed on one side of the load-bearing assembly; the grinding assembly includes a grinding motor installed on the load-bearing plate, a transmission rod connected to the rotor of the grinding motor, and a grinding wheel connected to the end of the transmission rod away from the grinding motor. The above-mentioned internal grinding device for pipe fittings has a simple structure and is easy to use. The bottom end of the load-bearing plate is hinged to the translation plate, and the push-pull cylinder drives the load-bearing plate to swing, thereby driving the grinding wheel to swing its position. The position of the grinding wheel can be adjusted to adapt to pipe fittings with different internal shapes, effectively improving processing quality and efficiency. However, this patent still has the problem of not being able to adapt to changes in the curvature of the inner wall of the pipe fitting according to different sizes. Summary of the Invention
[0004] To address the shortcomings of existing technologies, this invention provides an internal grinding device for die-cast pipe fittings, which solves the problems mentioned in the background section.
[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: an internal grinding device for die-cast pipe fittings, comprising a support frame, a crossbeam fixedly connected to the top plate of the support frame, and a grinding mechanism provided on the side of the crossbeam;
[0006] The grinding mechanism includes a lead screw track, which is fixedly connected to the side of a crossbeam. A vertical moving block is mounted on the side of the lead screw track, and a motor bracket is fixedly connected to the side of the vertical moving block. A grinding motor is mounted above the motor bracket. A hydraulic rod is provided on the front side of the lead screw track. A positioning block is fixedly connected to the bottom end of the hydraulic rod, and a combined connecting pipe is fixedly connected to the top of the hydraulic rod. An outer shaft ring block is fixedly connected to the end of the combined connecting pipe away from the hydraulic rod. A through-hole shaft cylinder is rotatably connected to the inner wall of the outer shaft ring block. The inner wall of the ring block is provided with an inner ring groove, and the side of the through hole cylinder is provided with a side through hole. The bottom surface of the through hole cylinder is fixedly connected to a hydraulic chamber. Two supply pipes are fixedly connected to the side of the hydraulic chamber. A hydraulic cylinder is fixedly connected to the end of each supply pipe away from the hydraulic chamber. An extension rod is slidably connected inside the hydraulic cylinder. An elastic plate is hinged to the end of the extension rod. Multiple grinding blocks are fixedly connected to the side of the elastic plate. A slip ring is fixedly connected to the outer surface of the upper half of the hydraulic rod. A vertical rod is slidably connected to the end of the slip ring away from the hydraulic rod.
[0007] According to the above technical solution, a base plate is fixedly connected to the bottom surface of the support frame, a positioning mechanism is provided below the grinding mechanism, an auxiliary mechanism is provided below the positioning mechanism, a transmission end shell is installed in the middle of the inner wall of the support frame, a support plate is fixedly connected to the inner side of the transmission end shell, and conveyor belts are provided on both the left and right sides of the support plate.
[0008] According to the above technical solution, the through-hole cylinder is fixedly connected to the output shaft of the grinding motor, the hydraulic cylinder is fixedly connected to the oil pressure chamber, a piston is installed inside the oil pressure chamber, and the piston is fixedly connected to the extension rod. The motor bracket is fixedly connected to the vertical rod, the slip ring is slidably connected to the motor bracket, a reciprocating spring is installed on the outside of the vertical rod, and the two ends of the reciprocating spring are fixedly connected to the slip ring and the motor bracket respectively. The inner wall of the inner ring groove is provided with a connecting hole, and the inner ring groove is connected to the inside of the through-hole cylinder through the connecting hole. When the lead screw rail is in working condition, the motor at the top of the lead screw rail drives the vertical moving block to move up and down along the lead screw. When the vertical moving block moves downward, the movement of the vertical moving block drives the connected motor bracket to move downward, so that the motor bracket gradually approaches the pipe to be processed by the grinding motor. During this process, the motor bracket moves downward through the vertical... The reciprocating spring connected to the rod applies pressure. After the reciprocating spring is compressed by the slip ring for a certain distance, the motor frame drives the slip ring through the reciprocating spring, causing the slip ring to apply pressure to the hydraulic rod. After the hydraulic rod contracts, it will transport the internal liquid to the outer shaft ring block through the connected combined pipe. The liquid is replenished to the inner ring groove through the outer shaft ring block, and enters the through hole cylinder through the side connecting hole of the inner ring groove and the side through hole. The liquid flows into the oil pressure chamber from the through hole cylinder, and then enters the hydraulic cylinder through the supply pipe connected to the oil pressure chamber. The hydraulic pressure in the hydraulic cylinder increases, which pushes the piston of the extension rod to move. The extension rod pushes the hinged elastic plate close to the pipe. After the elastic plate bends against the inner wall of the pipe, it makes the grinding block fit against the inner wall as much as possible. Then, the grinding motor drives the through hole cylinder and the connected structure to rotate relative to the outer shaft ring block through the drive shaft, and performs adaptive grinding on the inner wall of the annular pipe, making the inner wall of the molded pipe smooth.
[0009] According to the above technical solution, the positioning mechanism includes a push rod, which is slidably connected to the bottom right side of the lead screw track. A spring pressure block is slidably connected to the top outer surface of the push rod, and a fixing block is provided below the spring pressure block. A frame is fixedly connected to the bottom end of the push rod, and sliding rods are slidably connected to the four corners of the frame. Four inclined slot blocks are fixedly connected to the bottom surface of the frame, and guide rods are slidably connected to the sides of the inclined slot blocks. Hinges are fixedly connected to the bottom surfaces of both ends of the guide rods, and extension plates are fixedly connected to the sides of the hinges. Telescopic ends are slidably connected to the side of the extension plates away from the hinges. Flipping clamps are hinged to both ends of the hinges, and guide wheels are rotatably connected to the inner side of each flipping clamp. Rubber blocks are provided on the sides of the guide wheels.
[0010] According to the above technical solution, the fixed rod block is fixedly connected to the push rod, and an elastic spring is provided between the fixed rod block and the spring pressure block. The two ends of the elastic spring are fixedly connected to the fixed rod block and the spring pressure block respectively. The four sliding rods are fixedly connected to the transmission end shells on the left and right sides in pairs. A return spring is provided on the outside of the sliding rod, and the two ends of the return spring are fixedly connected to the frame and the transmission end shell respectively.
[0011] According to the above technical solution, the telescopic end is fixedly connected to the support frame, the rubber block is fixedly connected to the flipping clamping block, and a torsion spring is provided at the connection between the flipping clamping block and the hinge frame. Both ends of the torsion spring are fixedly connected to the flipping clamping block and the hinge frame, respectively. When the vertical moving block moves downward, it pushes the contacting spring pressure block to move, causing the spring pressure block to compress the lower elastic spring and slide downward along the push rod. After the elastic spring is compressed, it pushes the fixed rod block and the connected push rod to slide downward. The push rod pushes the frame along the sliding rod to compress the reset spring and push the connected inclined groove block. The groove block pushes the guide rod, causing the hinge connected to the guide rod to drive the extension plate to slide laterally along the inner wall of the telescopic end. During the movement of the hinge, the flipping clamp block connected to the hinge approaches the outer wall of the pipe. During the approach, the guide wheel of the flipping clamp block first contacts the outer wall of the pipe. As the hinge approaches, the guide wheel rolls along the outer wall of the pipe, causing the flipping clamp block to deflect around the hinge connection. During the deflection of the flipping clamp block, the torsion spring at the pivot deforms, pushing the connected rubber block to adhere to the outer wall of the pipe to achieve fixation. Fixation is achieved by the four flipping clamp blocks flipping synchronously and approaching the pipe, adapting to the key positioning of different sizes.
[0012] According to the above technical solution, the auxiliary mechanism includes a collection tank, an input pipe is fixedly connected inside the collection tank, a discharge port is fixedly connected to the bottom surface of the collection tank, a baffle is fixedly connected to the inner wall of the top of the collection tank, a positioning ring is fixedly connected to the outer wall of the input pipe, a water spraying disc is slidably connected to the top of the input pipe, a spring rotating ring is rotatably connected to the outer wall of the water spraying disc, a blocking block is fixedly connected inside the water spraying disc, multiple water-throwing holes are opened on the upper surface of the water spraying disc, a lower magnetic block is fixedly connected to the top surface of the water spraying disc, and an upper magnetic block is fixedly connected to the bottom surface of the hydraulic chamber.
[0013] According to the above technical solution, a return spring is provided on the top surface of the positioning ring, and the two ends of the return spring are fixedly connected to the positioning ring and the spring rotating ring respectively. The input pipe is L-shaped as a whole, and a plug is provided at the top of the input pipe to match the plug block. When the hydraulic chamber moves downward with the connected through-hole cylinder to a predetermined position inside the pipe for grinding, the upper magnetic block connected to the bottom of the hydraulic chamber approaches the lower magnetic block directly below, causing the lower magnetic block to be attracted by magnetic force and stick to the upper magnetic block and move upward. When the lower magnetic block moves upward and slides against the top of the input pipe, the lower magnetic block moves and drives the inner wall... When the blockage block moves away from the top of the input pipe, water enters the spray plate and is sprayed out through the water-throwing holes on the spray plate. During this process, the lower magnetic block moves upward and pulls the return spring connected to the spring ring. When the through-hole cylinder rotates with the output shaft of the grinding motor, the hydraulic chamber connected to the through-hole cylinder and the upper magnetic block also rotate synchronously. The upper magnetic block drives the lower magnetic block and the spray plate to rotate through magnetic force. The rotation of the spray plate throws the sprayed water onto the inner wall of the grinding pipe through centrifugal force, which washes and cools the particles generated by the grinding pipe.
[0014] This invention provides an internal grinding device for die-cast pipe fittings. It has the following beneficial effects:
[0015] This invention features a grinding mechanism that achieves precise downward control through the cooperation of a vertical moving block and a lead screw track. Utilizing a delayed pressure mechanism with a reciprocating spring and slip ring, it avoids damage caused by rigid contact between the grinding motor and the pipe fitting. Simultaneously, a hydraulic transmission system formed by a hydraulic rod, combined connecting pipe, outer shaft ring block, inner ring groove, side through hole, through-hole cylinder, oil pressure chamber, supply pipe, and hydraulic cylinder converts linear motion into a stable thrust of the extension rod onto the elastic plate. This allows the elastic plate to adapt to changes in the curvature of the pipe fitting's inner wall, causing the grinding block to tightly adhere to the inner wall, achieving uniform and efficient grinding and improving the processing accuracy and surface quality of the pipe fitting's inner wall.
[0016] This invention, by incorporating a positioning mechanism, uses the downward movement of the vertical moving block as a power source to uniformly drive the entire external fixing mechanism. It utilizes spring blocks, elastic springs, and push rods to transmit power and provide initial buffering. The frame and inclined slot block convert the downward linear motion into the lateral movement of the guide rod, thereby driving the hinge and flipping clamp to radially approach the pipe fitting. The key lies in the guide wheel first contacting the outer wall of the pipe fitting for guidance. Through the automatic deflection of the flipping clamp and the adaptive adjustment of the torsion spring, the rubber block can tightly conform to the outer wall of pipe fittings of different diameters or slightly elliptical shapes, achieving rapid, flexible, and stable adaptive envelope fixing. This effectively avoids scratching the pipe fitting surface or insecure fixing, adapting to the positioning needs of pipe fittings of different sizes.
[0017] This invention, through the inclusion of an auxiliary mechanism and non-contact magnetic coupling between the upper and lower magnetic blocks, achieves the transmission and on / off control of power from the rotating grinding mechanism to the stationary water supply component. This ensures that the water spraying function automatically activates only when the blockage disengages from the hydraulic chamber of the grinding head as it descends to the working position, avoiding problems such as premature water spraying or inaccurate positioning. Simultaneously, the rotation of the water spraying disc utilizes the driving force of the grinding motor itself, eliminating the need for an additional power source and achieving synchronous rotational water spraying. Centrifugal force is used to evenly distribute water onto the inner wall of the pipe, effectively flushing away grinding debris and reducing grinding temperature, thereby improving grinding quality, extending the life of the grinding block, and improving the working environment. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of the entire front of the present invention;
[0019] Figure 2 This is a schematic diagram of the overall rear-view three-dimensional structure of the present invention;
[0020] Figure 3 This is a schematic diagram of the overall polishing mechanism of the present invention;
[0021] Figure 4 This invention as a whole Figure 3A magnified structural diagram of A in the middle;
[0022] Figure 5 This is a schematic diagram of the overall slip ring connection structure of the present invention;
[0023] Figure 6 This is a schematic diagram of the overall push rod connection structure of the present invention;
[0024] Figure 7 This is a schematic diagram of the overall positioning mechanism of the present invention;
[0025] Figure 8 This invention as a whole Figure 7 A magnified structural diagram of B in the diagram;
[0026] Figure 9 This is a schematic diagram of the overall auxiliary mechanism of the present invention;
[0027] Figure 10 This invention as a whole Figure 9 A magnified structural diagram of C.
[0028] In the diagram: 1. Support frame; 2. Crossbeam; 3. Base plate; 4. Conveyor belt; 5. Grinding mechanism; 51. Screw track; 52. Vertical moving block; 53. Motor bracket; 54. Grinding motor; 55. Hydraulic rod; 56. Positioning block; 57. Combined connecting pipe; 58. Through-hole shaft cylinder; 59. Outer shaft ring block; 510. Inner ring groove; 511. Side through hole; 512. Hydraulic chamber; 513. Supply pipe; 514. Hydraulic cylinder; 515. Extension rod; 516. Elastic sheet; 517. Grinding block; 518. Slip ring; 519. Vertical rod; 6. Positioning mechanism; 61. 62. Push rod; 63. Spring pressure block; 64. Fixed rod block; 65. Frame; 66. Sliding rod; 67. Telescopic end; 68. Extension plate; 69. Hinge; 60. Flipping clamp block; 610. Guide wheel; 611. Rubber block; 612. Guide rod; 613. Inclined groove block; 7. Auxiliary mechanism; 71. Collection trough; 72. Input pipe; 73. Discharge port; 74. Stop bar; 75. Positioning ring; 76. Sprinkler plate; 77. Lower magnetic block; 78. Water ejection hole; 79. Block; 710. Spring swivel ring; 711. Upper magnetic block; 8. Support plate; 9. Transmission end shell. Detailed Implementation
[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0030] Please see Figure 1-10 An embodiment of the present invention is: an internal grinding device for die-cast pipe fittings, including a support frame 1, a crossbeam 2 fixedly connected to the top plate of the support frame 1, and a grinding mechanism 5 provided on the side of the crossbeam 2.
[0031] The grinding mechanism 5 includes a lead screw track 51, which is fixedly connected to the side of the crossbeam 2. A vertical moving block 52 is installed on the side of the lead screw track 51, and a motor bracket 53 is fixedly connected to the side of the vertical moving block 52. A grinding motor 54 is installed above the motor bracket 53. A hydraulic rod 55 is provided on the front side of the lead screw track 51. A positioning block 56 is fixedly connected to the bottom end of the hydraulic rod 55, and a combined connecting pipe 57 is fixedly connected to the top of the hydraulic rod 55. An outer shaft ring block 59 is fixedly connected to the end of the combined connecting pipe 57 away from the hydraulic rod 55. A through-hole shaft cylinder 58 is rotatably connected to the inner wall of the outer shaft ring block 59, and an inner ring is formed on the inner wall of the outer shaft ring block 59. The groove 510 and the through-hole shaft cylinder 58 have a side through hole 511. The bottom surface of the through-hole shaft cylinder 58 is fixedly connected to a hydraulic chamber 512. Two supply pipes 513 are fixedly connected to the side of the hydraulic chamber 512. A hydraulic cylinder 514 is fixedly connected to the end of each supply pipe 513 away from the hydraulic chamber 512. An extension rod 515 is slidably connected inside the hydraulic cylinder 514. An elastic plate 516 is hinged to the end of the extension rod 515. Multiple grinding blocks 517 are fixedly connected to the side of the elastic plate 516. A slip ring 518 is fixedly connected to the outer surface of the upper half of the hydraulic rod 55. A vertical rod 519 is slidably connected to the end of the slip ring 518 away from the hydraulic rod 55.
[0032] A base plate 3 is fixedly connected to the bottom surface of the support frame 1. A positioning mechanism 6 is provided below the grinding mechanism 5. An auxiliary mechanism 7 is provided below the positioning mechanism 6. A transmission end shell 9 is installed in the middle of the inner wall of the support frame 1. A support plate 8 is fixedly connected to the inner side of the transmission end shell 9. Conveyor belts 4 are provided on both the left and right sides of the support plate 8.
[0033] The through-hole cylinder 58 is fixedly connected to the output shaft of the grinding motor 54. The hydraulic cylinder 514 is fixedly connected to the oil pressure chamber 512. A piston is installed inside the oil pressure chamber 512, and the piston is fixedly connected to the extension rod 515. The motor bracket 53 is fixedly connected to the vertical rod 519. The slip ring 518 is slidably connected to the motor bracket 53. A reciprocating spring is installed on the outside of the vertical rod 519, and the two ends of the reciprocating spring are fixedly connected to the slip ring 518 and the motor bracket 53, respectively. A connecting hole is opened on the inner wall of the inner ring groove 510, and the inner ring groove 510 is connected to the inside of the through-hole cylinder 58 through the connecting hole. When the lead screw rail 51 is in working condition, the motor driven by the top of the lead screw rail 51 drives the vertical moving block. 52 moves up and down along the lead screw. When the vertical moving block 52 moves downward, it drives the connected motor bracket 53 to move downward, causing the motor bracket 53 to gradually approach the pipe to be processed via the grinding motor 54. During this process, the motor bracket 53 is pressed by the reciprocating spring connected to the vertical rod 519. After the reciprocating spring is compressed by the slip ring 518 for a certain distance, the motor bracket 53 drives the slip ring 518 through the reciprocating spring, causing the slip ring 518 to press the hydraulic rod 55. After the hydraulic rod 55 retracts, it will transport the internal liquid to the outer shaft ring block 59 through the connected combined pipe 57. The liquid is then replenished to the inner ring groove 510 through the outer shaft ring block 59. The liquid enters the through-hole cylinder 58 through the side through-hole 511. Liquid flows from the through-hole cylinder 58 into the hydraulic chamber 512, and then through the supply pipe 513 connected to the hydraulic chamber 512 into the hydraulic cylinder 514. Increased hydraulic pressure in the hydraulic cylinder 514 pushes the piston of the extension rod 515, causing the extension rod 515 to push the hinged elastic plate 516 closer to the pipe. The elastic plate 516 bends against the inner wall of the pipe, causing the grinding block 517 to fit as close to the inner wall as possible. Then, the grinding motor 54 drives the through-hole cylinder 58 and its connected structure relative to the outer shaft ring block 59 via the drive shaft, performing adaptive grinding on the inner wall of the annular pipe, smoothing the inner wall of the molded pipe. This is achieved by the vertical moving block 5... 2. The precise downward movement control is achieved through the cooperation of the lead screw and track 51. The delayed pressure mechanism of the reciprocating spring and slip ring 518 is used to avoid damage caused by rigid contact between the grinding motor 54 and the pipe. At the same time, the hydraulic transmission system formed by the hydraulic rod 55, combined connecting pipe 57, outer shaft ring block 59, inner ring groove 510, side through hole 511, through hole shaft cylinder 58, oil pressure chamber 512, supply pipe 513 and hydraulic cylinder 514 converts the linear motion into a stable thrust of the extension rod 515 on the elastic plate 516. This allows the elastic plate 516 to adapt to the curvature change of the inner wall of the pipe, driving the grinding block 517 to fit tightly against the inner wall, achieving uniform and efficient grinding, and improving the processing accuracy and surface quality of the inner wall of the pipe.
[0034] The positioning mechanism 6 includes a push rod 61, which is slidably connected to the bottom right side of the lead screw track 51. A spring pressure block 62 is slidably connected to the top outer surface of the push rod 61. A fixing block 63 is provided below the spring pressure block 62. A frame 64 is fixedly connected to the bottom end of the push rod 61. Sliding rods 65 are slidably connected to the four corners of the frame 64. Four inclined slot blocks 613 are fixedly connected to the bottom surface of the frame 64. Guide rods 612 are slidably connected to the sides of the inclined slot blocks 613. Hinges 68 are fixedly connected to the bottom surfaces of both ends of the guide rods 612. Extension plates 67 are fixedly connected to the sides of the hinges 68. Telescopic ends 66 are slidably connected to the side of the extension plates 67 away from the hinges 68. Flipping clamps 69 are hinged to both ends of the hinges 68. Guide wheels 610 are rotatably connected to the inner side of each flipping clamp 69. Rubber blocks 611 are provided on the sides of the guide wheels 610.
[0035] The fixed rod block 63 is fixedly connected to the push rod 61. A spring is provided between the fixed rod block 63 and the spring pressure block 62, and the two ends of the spring are fixedly connected to the fixed rod block 63 and the spring pressure block 62 respectively. The four sliding rods 65 are fixedly connected to the transmission end shells 9 on the left and right sides in pairs. A return spring is provided on the outside of the sliding rod 65, and the two ends of the return spring are fixedly connected to the frame 64 and the transmission end shell 9 respectively.
[0036] The telescopic end 66 is fixedly connected to the support frame 1, and the rubber block 611 is fixedly connected to the flipping clamp 69. A torsion spring is provided at the connection between the flipping clamp 69 and the hinge 68, and the two ends of the torsion spring are fixedly connected to the flipping clamp 69 and the hinge 68 respectively. When the vertical moving block 52 moves downward, it pushes the contacting spring pressure block 62 to move, causing the spring pressure block 62 to compress the lower elastic spring and slide downward along the push rod 61. After the elastic spring is compressed, it pushes the fixed rod block 63 and the connected push rod 61 to slide downward. Rod 61 pushes frame 64 along sliding rod 65 to compress and push the reset spring, which in turn pushes the connected inclined block 613. The inclined block 613 pushes guide rod 612, causing hinge 68 connected to guide rod 612 to drive extension plate 67 to slide laterally along the inner wall of telescopic end 66. During the movement of hinge 68, flipping clamp 69 connected to hinge 68 approaches the outer wall of pipe fitting. During the approach, the guide wheel 610 of flipping clamp 69 first contacts the outer wall of pipe fitting. As hinge 68 approaches, guide wheel 610 rolls along the outer wall of pipe fitting. The flipping clamp 69 deflects around the connection of the hinge 68. During the deflection of the flipping clamp 69, the torsion spring at the pivot point deforms, pushing the connected rubber block 611 to adhere to the outer wall of the pipe fitting for fixation. Fixation is achieved by the simultaneous flipping of the four flipping clamps 69 towards the pipe fitting, adapting to the key positioning of different sizes. The downward movement of the vertical moving block 52 serves as the power source, driving the entire external fixing mechanism. The spring pressure block 62, elastic spring, and push rod 61 transmit power and provide initial buffering. The frame 64 and the inclined groove block 613 will move downwards... The linear motion is converted into the lateral motion of the guide rod 612, which in turn drives the hinge 68 and the flipping clamp 69 to move radially closer to the pipe. The key is that the guide wheel 610 first contacts the outer wall of the pipe for guidance, and through the automatic deflection of the flipping clamp 69 and the adaptive adjustment of the torsion spring, the rubber block 611 can tightly fit the outer wall of pipes of different diameters or slightly elliptical, achieving fast, flexible and stable adaptive envelope fixation. This effectively avoids the problem of scratching the surface of the pipe or the problem of insecure fixation, and adapts to the positioning requirements of pipes of different sizes.
[0037] The auxiliary mechanism 7 includes a collection tank 71, an input pipe 72 fixedly connected inside the collection tank 71, a discharge port 73 fixedly connected to the bottom surface of the collection tank 71, a baffle 74 fixedly connected to the inner wall of the top of the collection tank 71, a positioning ring 75 fixedly connected to the outer wall of the input pipe 72, a water spraying disc 76 slidably connected to the top of the input pipe 72, a spring rotating ring 710 rotatably connected to the outer wall of the water spraying disc 76, a block 79 fixedly connected inside the water spraying disc 76, multiple water-throwing holes 78 opened on the upper surface of the water spraying disc 76, a lower magnetic block 77 fixedly connected to the top surface of the water spraying disc 76, and an upper magnetic block 711 fixedly connected to the bottom surface of the hydraulic chamber 512.
[0038] A return spring is provided on the top surface of the positioning ring 75, and the two ends of the return spring are fixedly connected to the positioning ring 75 and the spring rotating ring 710 respectively. The input pipe 72 is L-shaped in general, and a plug is provided on the top of the input pipe 72 to match the plug block 79. When the hydraulic chamber 512 moves downward with the connected through-hole cylinder 58 to a predetermined position inside the pipe for grinding, the upper magnetic block 711 connected to the bottom of the hydraulic chamber 512 approaches the lower magnetic block 77 directly below, so that the lower magnetic block 77 is attracted by magnetic force and then interacts with the upper magnetic block 77. Block 711 adheres and moves upward. When the lower magnetic block 77 moves upward and slides against the top of the input pipe 72, the lower magnetic block 77 moves and drives the inner wall block 79 away from the top of the input pipe 72. At this time, water in the input pipe 72 enters the spray plate 76 and is sprayed out through the water-throwing hole 78 on the spray plate 76. During this process, the upward movement of the lower magnetic block 77 will pull the return spring connected to the spring ring 710. When the through-hole cylinder 58 rotates with the drive of the output shaft of the grinding motor 54, the through-hole cylinder... The hydraulic chamber 512 and the upper magnetic block 711 connected to the shaft cylinder 58 also rotate synchronously. The upper magnetic block 711 drives the lower magnetic block 77 and the water spray plate 76 to rotate through magnetic force. The rotation of the water spray plate 76 throws the sprayed water onto the inner wall of the grinding pipe through centrifugal force, which washes and cools the particles generated by the grinding pipe. Through the non-contact magnetic coupling between the upper magnetic block 711 and the lower magnetic block 77, the power is transmitted from the rotating grinding mechanism 5 to the stationary water supply component and the switching control is realized. The system ensures that the water spraying function only activates automatically when the block 79 disengages from the hydraulic chamber 512 of the grinding head as it descends to the working position. This avoids problems such as premature water spraying or inaccurate positioning. At the same time, the rotation of the water spraying disc 76 is driven by the grinding motor 54 itself, eliminating the need for an additional power source. This achieves synchronous rotation and water spraying, using centrifugal force to evenly distribute water onto the inner wall of the pipe, effectively washing away grinding debris and reducing the grinding temperature. This improves the grinding quality, extends the life of the grinding block 517, and improves the working environment.
[0039] Working principle: When the lead screw rail 51 is in working condition, the drive motor at the top of the lead screw rail 51 causes the vertical moving block 52 to move up and down along the lead screw. When the vertical moving block 52 moves downward, it drives the connected motor mounting bracket 53 to move downward, causing the motor mounting bracket 53 to gradually approach the pipe to be processed via the grinding motor 54. During this process, the motor mounting bracket 53 is pressed by the reciprocating spring connected to the vertical rod 519. After the reciprocating spring is compressed by the slip ring 518 for a certain distance, the motor mounting bracket 53 drives the slip ring 518 through the reciprocating spring, causing the slip ring 518 to press the hydraulic rod 55. After the hydraulic rod 55 contracts, it will transport the internal liquid to the outer shaft ring block 59 through the connected combined pipe 57. The collar block 59 is added into the inner ring groove 510. It enters the through hole cylinder 58 through the side through hole 511 via the side through hole of the inner ring groove 510. The liquid flows from the through hole cylinder 58 into the hydraulic chamber 512 and then into the hydraulic cylinder 514 through the supply pipe 513 connected to the hydraulic chamber 512. The hydraulic pressure in the hydraulic cylinder 514 increases and pushes the piston of the extension rod 515 to move. The extension rod 515 pushes the hinged elastic plate 516 close to the pipe. After the elastic plate 516 bends against the inner wall of the pipe, the grinding block 517 is made to fit the inner wall as closely as possible. Then, the grinding motor 54 drives the through hole cylinder 58 and the connected structure to rotate relative to the outer collar block 59 through the drive shaft to perform adaptive grinding on the inner wall of the annular pipe and grind the inner wall of the molded pipe flat.
[0040] When the vertical moving block 52 moves downward, it pushes the contacting spring pressure block 62 to move, causing the spring pressure block 62 to compress the lower elastic spring and slide downward along the push rod 61. After the elastic spring is compressed, it pushes the fixed rod block 63 and the connected push rod 61 to slide downward. The push rod 61 pushes the frame 64 to compress the reset spring along the sliding rod 65 and pushes the connected inclined groove block 613. The inclined groove block 613 pushes the guide rod 612, causing the hinge frame 68 connected to the guide rod 612 to drive the extension plate 67 to slide laterally along the inner wall of the telescopic end 66. During the movement of frame 68, the flipping clamp 69 connected to the hinge frame 68 approaches the outer wall of the pipe. During the approach, the guide wheel 610 of the flipping clamp 69 first contacts the outer wall of the pipe. As the hinge frame 68 approaches, the guide wheel 610 rolls along the outer wall of the pipe, causing the flipping clamp 69 to deflect around the connection of the hinge frame 68. During the deflection of the flipping clamp 69, the torsion spring at the pivot point deforms and pushes the connected rubber block 611 to adhere to the outer wall of the pipe to achieve fixation. Fixation is achieved by the four flipping clamps 69 flipping and approaching the pipe simultaneously, which can adapt to the positioning of different sizes.
[0041] When the hydraulic chamber 512, along with the connected through-hole cylinder 58, moves downwards towards a predetermined position inside the pipe for grinding, the upper magnetic block 711 connected to the bottom of the hydraulic chamber 512 approaches the lower magnetic block 77 directly below it. This causes the lower magnetic block 77 to be magnetically attracted and adhere to the upper magnetic block 711, moving upwards. As the lower magnetic block 77 moves upwards and slides against the top of the input pipe 72, it moves and drives the inner wall block 79 away from the top of the input pipe 72. At this time, water in the input pipe 72 enters the spray disc 76 and is splashed by the spray disc 76. When water is sprayed from hole 78, the lower magnetic block 77 moves upward and pulls the return spring connected to the spring ring 710. When the through-hole cylinder 58 rotates with the output shaft of the grinding motor 54, the hydraulic chamber 512 and the upper magnetic block 711 connected to the through-hole cylinder 58 also rotate synchronously. The upper magnetic block 711 drives the lower magnetic block 77 and the water spray plate 76 to rotate through magnetic force. The water spray plate 76 rotates and throws the sprayed water onto the inner wall of the grinding pipe through centrifugal force, which plays a role in washing and cooling the particles generated by the grinding pipe.
[0042] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A grinding device for the inside of die-cast pipe fittings, comprising a support frame (1), characterized in that: The top plate of the support frame (1) is fixedly connected to a crossbeam (2), and a grinding mechanism (5) is provided on the side of the crossbeam (2). The grinding mechanism (5) includes a lead screw track (51), which is fixedly connected to the side of the crossbeam (2). A vertical moving block (52) is installed on the side of the lead screw track (51), and a motor bracket (53) is fixedly connected to the side of the vertical moving block (52). A grinding motor (54) is installed above the motor bracket (53). A hydraulic rod (55) is provided on the front side of the lead screw track (51). A positioning block (56) is fixedly connected to the bottom end of the hydraulic rod (55). A combined connecting pipe (57) is fixedly connected to the top of the hydraulic rod (55). An outer shaft ring block (59) is fixedly connected to the end of the combined connecting pipe (57) away from the hydraulic rod (55). A through-hole shaft cylinder (58) is rotatably connected to the inner wall of the outer shaft ring block (59). An opening is provided on the inner wall of the outer shaft ring block (59). The cylinder (58) has an inner ring groove (510), and a side through hole (511) is provided on the side of the through hole cylinder (58). A hydraulic chamber (512) is fixedly connected to the bottom surface of the through hole cylinder (58). Two supply pipes (513) are fixedly connected to the side of the hydraulic chamber (512). A hydraulic cylinder (514) is fixedly connected to the end of each supply pipe (513) away from the hydraulic chamber (512). An extension rod (515) is slidably connected inside the hydraulic cylinder (514). An elastic plate (516) is hinged to the end of the extension rod (515). Multiple grinding blocks (517) are fixedly connected to the side of the elastic plate (516). A slip ring (518) is fixedly connected to the outer surface of the upper half of the hydraulic rod (55). A vertical rod (519) is slidably connected to the end of the slip ring (518) away from the hydraulic rod (55).
2. The internal grinding device for die-cast pipe fittings according to claim 1, characterized in that: The bottom surface of the support frame (1) is fixedly connected to the bottom plate (3), the grinding mechanism (5) is provided with a positioning mechanism (6) below it, the positioning mechanism (6) is provided with an auxiliary mechanism (7) below it, the inner wall of the support frame (1) is installed with a transmission end shell (9), the inner side of the transmission end shell (9) is fixedly connected with a support plate (8), and the left and right sides of the support plate (8) are provided with conveyor belts (4).
3. The internal grinding device for die-cast pipe fittings according to claim 2, characterized in that: The through-hole cylinder (58) is fixedly connected to the output shaft of the grinding motor (54), the hydraulic cylinder (514) is fixedly connected to the oil pressure chamber (512), the oil pressure chamber (512) is provided with a piston, and the piston is fixedly connected to the extension rod (515), the motor bracket (53) is fixedly connected to the vertical rod (519), the slip ring (518) is slidably connected to the motor bracket (53), the outside of the vertical rod (519) is provided with a reciprocating spring, and the two ends of the reciprocating spring are fixedly connected to the slip ring (518) and the motor bracket (53) respectively. The inner wall of the inner ring groove (510) is provided with a connecting hole, and the inner ring groove (510) is connected to the inside of the through-hole cylinder (58) through the connecting hole.
4. The internal grinding device for die-cast pipe fittings according to claim 3, characterized in that: The positioning mechanism (6) includes a push rod (61), which is slidably connected to the bottom right side of the lead screw track (51). A spring pressure block (62) is slidably connected to the top outer surface of the push rod (61), and a fixing block (63) is provided below the spring pressure block (62). A frame (64) is fixedly connected to the bottom end of the push rod (61), and sliding rods (65) are slidably connected to the four corners of the frame (64). Four inclined slot blocks (613) are fixedly connected to the bottom surface of the frame (64). (613) has a guide rod (612) slidably connected to its side. The bottom surfaces of both ends of the guide rod (612) are fixedly connected to a hinge frame (68). The side of the hinge frame (68) is fixedly connected to an extension plate (67). The side of the extension plate (67) away from the hinge frame (68) is slidably connected to a telescopic end (66). The two ends of the hinge frame (68) are hingedly connected to a flipping clamping block (69). The inner side of each flipping clamping block (69) is rotatably connected to a guide wheel (610). The side of the guide wheel (610) is provided with a rubber block (611).
5. The internal grinding device for die-cast pipe fittings according to claim 4, characterized in that: The fixed rod block (63) is fixedly connected to the push rod (61). A spring is provided between the fixed rod block (63) and the spring pressure block (62), and the two ends of the spring are fixedly connected to the fixed rod block (63) and the spring pressure block (62) respectively. The four sliding rods (65) are fixedly connected to the transmission end shells (9) on the left and right sides in pairs. A return spring is provided on the outside of the sliding rod (65), and the two ends of the return spring are fixedly connected to the frame (64) and the transmission end shell (9) respectively.
6. The internal grinding device for die-cast pipe fittings according to claim 5, characterized in that: The telescopic end (66) is fixedly connected to the support frame (1), the rubber block (611) is fixedly connected to the flipping clamp (69), and a torsion spring is provided at the connection between the flipping clamp (69) and the hinge (68), and the two ends of the torsion spring are fixedly connected to the flipping clamp (69) and the hinge (68) respectively.
7. The internal grinding device for die-cast pipe fittings according to claim 6, characterized in that: The auxiliary mechanism (7) includes a collection tank (71), an input pipe (72) is fixedly connected inside the collection tank (71), a discharge port (73) is fixedly connected to the bottom surface of the collection tank (71), a baffle (74) is fixedly connected to the inner wall of the top of the collection tank (71), a positioning ring (75) is fixedly connected to the outer wall of the input pipe (72), a water spraying disc (76) is slidably connected to the top of the input pipe (72), a spring rotating ring (710) is rotatably connected to the outer wall of the water spraying disc (76), a block (79) is fixedly connected inside the water spraying disc (76), a plurality of water-throwing holes (78) are opened on the upper surface of the water spraying disc (76), a lower magnetic block (77) is fixedly connected to the top surface of the water spraying disc (76), and an upper magnetic block (711) is fixedly connected to the bottom surface of the hydraulic chamber (512).
8. The internal grinding device for die-cast pipe fittings according to claim 7, characterized in that: The top surface of the positioning ring (75) is provided with a reset spring, and the two ends of the reset spring are fixedly connected to the positioning ring (75) and the spring swivel (710) respectively. The input tube (72) is L-shaped in general, and the top of the input tube (72) is provided with a plug that matches the plug block (79).