Special equipment for multi-wheel-set abrasive belt grinding and polishing built-up welding alloy surface of internal mixing chamber

Abstract

The utility model belongs to the technical field of internal mixers, and discloses special equipment for grinding and polishing a surfacing alloy surface of an internal mixing chamber through a multi-wheel-set abrasive belt. And the core design is a special multi-wheel-set structure, so that the length of the abrasive belt is increased, the service life of the abrasive belt is prolonged, the frequency of replacing the abrasive belt is reduced, the grinding procedure of a workpiece is completed in the shortest time, and the machining precision and the surface machining quality of the inner wall of the internal mixing chamber are improved. And the workpiece is machined and polished on the planetary grinding machine within the shortest time. And meanwhile, a U-shaped wheel seat is additionally arranged on the design of a tensioning wheel and a grinding wheel part, so that the situation that the grinding position of the abrasive belt has angular deviation due to uneven stress in the abrasive belt adjusting and grinding process is avoided, the flatness and smoothness of the grinding surface are guaranteed to the maximum extent, and the machining precision and the surface machining quality of the inner wall of the internal mixing chamber are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of internal mixers, in particular to a special device for multi-wheel group sand belt grinding and polishing the surfacing alloy surface of an internal mixer chamber. Background Art

[0002] The enclosed rubber mixer, abbreviated as internal mixer, is a key device for the production of various tires, mainly used for plasticating and mixing raw rubber materials. The internal mixer mainly consists of an internal mixer chamber, rotors, rotor sealing devices, feeding and pressing devices, discharging devices, transmission devices, locking devices, and a machine base, etc. Among them, the internal mixer chamber, as the core component of the internal mixer, plays a role in sealing and preventing material leakage. The internal mixer chamber is the main place where rubber materials and various compounding agents are fully mixed, kneaded, and dispersed. Inside the internal mixer chamber, the rotors rotate in opposite directions, providing a great shearing force to evenly disperse the rubber materials and compounding agents. The design and performance of the internal mixer chamber directly affect the working production efficiency and plasticating quality of the internal mixer. Since the inner wall of the internal mixer chamber is directly in contact with the rubber material during the plasticating and mixing processes of the internal mixer, and is simultaneously subjected to the dual damage effects of wear and corrosion of the rubber material, it is necessary to use alloy welding materials with high hardness, high wear resistance, and high corrosion resistance to improve the service life of the internal mixer chamber.

[0003] Currently, according to the product usage characteristics, for parts of the internal mixer chamber type, only a grinding wheel can be used to grind and polish on a special planetary grinding machine. However, due to the high hardness and wear resistance of the surfacing alloy layer, the grinding effect of the grinding wheel is not ideal and the efficiency is low. Based on this, the utility model proposes a special device for multi-wheel group sand belt grinding and polishing the surfacing alloy surface of an internal mixer chamber. Summary of the Utility Model

[0004] The purpose of the utility model is to develop a professional grinding and polishing device for the difficult-to-grind surfacing alloy surface of the internal mixer chamber of an internal mixer, which is used for grinding and processing the inner wall of the internal mixer chamber of the internal mixer to improve the inner wall processing efficiency and surface processing quality. It can be installed on the working boom of a special planetary grinding machine. By using this device to replace the traditional grinding method, the workpieces of the internal mixer chamber type can be processed on the special planetary grinding machine. The test results show that for the same workpiece, the grinding time of this tooling is much less than that of the grinding wheel, improving the processing efficiency and the surface precision of the processing at the same time.

[0005] The technical solution of the utility model is as follows: A special device for multi-wheel group sand belt grinding and polishing the surfacing alloy surface of an internal mixer chamber, including a multi-wheel group sand belt grinding mechanism, a connection and support mechanism, and a rotation and adjustment mechanism; the three are connected in sequence;

[0006] The multi-wheel abrasive belt grinding mechanism includes idler wheels 1, a driving wheel 2, a tensioning wheel 3, grinding wheels 4, a support 5, a pull rod 10, and a spring 11; multiple idler wheels 1 are provided; the idler wheels 1, the driving wheel 2, the tensioning wheel 3, and the grinding wheels 4 are all installed on the support 5, and the abrasive belt passes through the idler wheels 1, the driving wheel 2, the tensioning wheel 3, and the grinding wheels 4 to form a complete closed loop;

[0007] A groove is provided on the support 5; a wheel seat 9 is arranged in the groove, and the wheel seat 9 is fixedly connected to the tensioning wheel 3; a round hole is provided on the side of the support 5, a spring 11 is sleeved on the pull rod 10, and one end of the spring 11 passes through the round hole and the wheel seat 9 in sequence and then is connected to the wheel seat 9; by controlling the position of the pull rod 10, the displacement of the tensioning wheel 3 is adjusted.

[0008] When multiple idler wheels 1 are provided, the tensioning wheel 3 and the grinding wheels 4 are located on the same side; the idler wheels 1 are located in the abrasive belt path between the driving wheel 2 and the grinding wheels 4 or in the abrasive belt path between the driving wheel 2 and the tensioning wheel 3, and the idler wheels 1 are located at the edge position on the support 5 or the distance between the idler wheels 1 with adjacent abrasive belt connection relationships is guaranteed to reach the maximum limit.

[0009] Further, two idler wheels 1 are provided; the first idler wheel 1 is located at the edge of the support 5; the second idler wheel 1 is located at the middle position of the support 5; the abrasive belt passes through the driving wheel 2, the first idler wheel 1, the grinding wheels 4, the tensioning wheel 3, and the second idler wheel 1 in sequence and then returns to the driving wheel 2 to form a complete closed loop.

[0010] The connection and support mechanism includes the large arm 16 of the planetary grinder, the large arm motor bracket 17, the large arm moving plate 18, and the large arm rotating support plate 19; one end of the large arm 16 of the planetary grinder is connected to the support 5, and the other end is connected to the large arm motor bracket 17; the large arm motor bracket 17 is fixed on the large arm moving plate 18; the large arm moving plate 18 is installed on the large arm rotating support plate 19 and slides on the large arm rotating support plate 19, thereby adjusting the contact point position between the multi-wheel abrasive belt grinding machine and the workpiece; the large arm rotating support plate 19 is connected to the rotating motor 20.

[0011] The rotation adjustment mechanism includes a rotating motor 20, a lifting motor 21, a lifting transmission box 22, and a main support frame 23; the lifting motor 21 and the lifting transmission box 22 are both installed on the main support frame 23, the rotating motor 20 is connected to the lifting transmission box 22, and the lifting motor 21 drives the lifting transmission box 22 to move, thereby driving the rotating motor 20 to slide on the main support frame 23, so as to adjust the position of the rotating motor 20. Cooperating with the large arm moving plate 18, the rotation center of the driving shaft of the multi-wheel abrasive belt grinding machine is consistent with the geometric center of the inner wall of the internal mixer, and then the multi-wheel abrasive belt grinding machine is driven by the rotating motor 20 to perform a grinding circular motion.

[0012] Advantages of the present utility model: The present utility model adopts a special structural design of a multi-wheel group abrasive belt grinding machine, aiming to make the abrasive belt for grinding as long as possible, effectively improving the service life of an abrasive belt and reducing the number of times of replacing the abrasive belt during the grinding process. The workpiece can complete the two processes of machining and polishing on the planetary grinding machine in the shortest time. At the same time, a U-shaped wheel seat is added to the design of the tensioning wheel and the grinding wheel components, ensuring that during the adjustment of the abrasive belt and the grinding process, the angle deviation of the grinding position of the abrasive belt will not occur due to uneven force, ensuring the flatness and smoothness of the grinding surface to the greatest extent, and improving the machining accuracy and surface machining quality of the inner wall of the internal mixer. Brief Description of the Drawings

[0013] Figure 1 is the overall structural schematic diagram of the present utility model;

[0014] Figure 2(a) is the exploded structural schematic diagram of the multi-wheel group abrasive belt grinding machine;

[0015] Figure 2(b) is the structural schematic diagram of the multi-wheel group abrasive belt grinding machine;

[0016] Figure 3 is the structural schematic diagram of the idler wheel;

[0017] Figure 4 is the structural schematic diagram of the tensioning wheel;

[0018] Figure 5 is the structural schematic diagram of the grinding wheel;

[0019] Figure 6 is the structural schematic diagram of the support;

[0020] In the figure: 1 idler wheel, 2 driving wheel, 3 tensioning wheel, 4 grinding wheel, 5 support, 6 long wheel shaft, 7 short wheel shaft, 8 positioning sleeve, 9 wheel seat, 10 pull rod, 11 spring, 12 pad, 13 small nut and washer, 14 large nut and washer, 15 screw and washer; 16 large arm, 17 large arm motor bracket, 18 large arm moving plate, 19 large arm rotating support plate, 20 rotating motor, 21 lifting motor, 22 lifting transmission box, 23 main support frame;

[0021] 1-1 wheel body, 1-2 double-sided dust-proof bearing, 1-3 short positioning sleeve, 1-4 long positioning sleeve, 1-5 end cover, 1-6 screw; 3-1 U-shaped wheel seat; 4-1 wheel body a, 5-1 support body, 5-2 gland, 5-3 washer, 5-4 long screw, 5-5 short screw. Detailed Embodiment

[0022] The present utility model will be further explained below with reference to the drawings.

[0023] A special device for multi-wheel abrasive belt grinding and polishing the surfacing alloy surface of a kneading chamber, including a multi-wheel abrasive belt grinding mechanism, a connection support mechanism, and a rotation adjustment mechanism, which are connected in sequence.

[0024] The multi-wheel abrasive belt grinding mechanism includes a idler wheel 1, a driving wheel 2, a tensioning wheel 3, a grinding wheel 4, a support 5, a pull rod 10, and a spring 11; multiple idler wheels 1 are provided; the idler wheel 1, the driving wheel 2, the tensioning wheel 3, and the grinding wheel 4 are all installed on the support 5, and the abrasive belt passes through the idler wheel 1, the driving wheel 2, the tensioning wheel 3, and the grinding wheel 4 to form a complete closed loop;

[0025] A groove is provided on the support 5; a wheel seat 9 is arranged in the groove, and the wheel seat 9 is fixedly connected to the tensioning wheel 3; a round hole is provided on the side of the support 5, a spring 11 is sleeved on the pull rod 10, and one end of it passes through the round hole and the wheel seat 9 in sequence and then is connected to the wheel seat 9; by controlling the position of the pull rod 10, the displacement of the tensioning wheel 3 is adjusted.

[0026] The pull rod 10 has threads, which are thread-engaged with the through hole passing through the wheel seat 9. Rotating the pull rod 10 drives the wheel seat 9 to move.

[0027] The idler wheel 1 includes a wheel body 1-1, a double-sided dust-proof bearing 1-2, a short positioning sleeve 1-3, a long positioning sleeve 1-4, an end cover 1-5, and a screw 1-6; the tensioning wheel includes a wheel body 1-1, a double-sided dust-proof bearing 1-2, a short positioning sleeve 1-3, an end cover 1-5, a screw 1-6, and a U-shaped wheel seat 3-1; the grinding wheel 4 includes a wheel body a4-1, a double-sided dust-proof bearing 1-2, a short positioning sleeve 1-3, an end cover 1-5, a screw 1-6, and a U-shaped wheel seat 3-1; the support 5 includes a support body 5-1, a gland 5-2, a washer 5-3, a long screw 5-4, and a short screw 5-5; among them, round holes and grooves are opened on the plate of the support 5-1, and the idler wheel 1, the driving wheel 2, the tensioning wheel 3, and the grinding wheel 4 are connected to it by using long wheel shafts, short wheel shafts, wheel seats, pull rods, springs, and screws and nuts, etc. The other end of the support 5-1 is connected to the gland 5-2 and then fixed to the large arm 16 of the planetary grinding machine by using the short screw 5-5.

[0028] The connection support mechanism includes the large arm 16 of the planetary grinding machine, a large arm motor bracket 17, a large arm moving plate 18, and a large arm rotating support plate 19. Among them, one end of the large arm 16 is connected to the support 5 of the abrasive belt grinding head, and the other end is connected to the large arm motor bracket 17; the large arm motor bracket 17 is fixed on the large arm moving plate 18. The large arm rotating support plate 19 is connected to the rotating motor 20; the large arm moving plate 18 is installed on the large arm rotating support plate 19, and the large arm moving plate 18 can slide on the large arm rotating support plate 19, thereby adjusting the contact point position between the multi-wheel abrasive belt grinding machine and the workpiece, so that the grinding point of the grinding machine always fits the inner wall of the kneading chamber.

[0029] The rotation adjustment mechanism includes a rotation motor 20, a lifting motor 21, a lifting transmission box 22, and a main support frame 23. Among them, the lifting motor 20 and the lifting transmission box 22 are both installed on the main support frame 23. The rotation motor 20 is connected to the lifting transmission box 22. The lifting motor 21 drives the lifting transmission box 22 to move, thereby driving the rotation motor 20 to slide on the main support frame 23, so as to adjust the position of the rotation motor 20. Cooperating with the boom moving plate 18, the rotation center of the drive shaft of the multi-wheel group sand belt grinding machine can be made to coincide with the geometric center of the inner wall of the internal mixer, and then the rotation motor 20 drives the multi-wheel group sand belt grinding machine to perform a grinding circular motion.

[0030] The main parameters of this embodiment are as follows:

[0031] Specification of the inner wall of the internal mixer: diameter 440 - 775 mm;

[0032] Implementation method:

[0033] As Figure 1 As shown in the figure, the present invention provides a special equipment for multi-wheel group sand belt grinding and polishing the surfacing alloy surface of the internal mixer, including a multi-wheel group sand belt grinding machine, a connection support mechanism, and a rotation adjustment mechanism. The entire mechanism can realize that the machine tool drives the boom of the grinding machine to make a circular motion, that is, the boom rotates around Z1 to drive the driving wheel 2 of the sand belt device at its front end, and the whole moves axially along the Y direction to perform a feeding motion. The multi-wheel group cooperates with the rotation to polish the surfacing alloy layer on the inner wall of the internal mixer.

[0034] The multi-wheel abrasive belt grinding machine includes an idler wheel 1, a driving wheel 2, a tensioning wheel 3, a grinding wheel 4, a support 5, a long wheel shaft 6, a short wheel shaft 7, a positioning sleeve 8, a wheel seat 9, a pull rod 10, a spring 11, a pad 12, a small nut and washer 13, a large nut and washer 14, and a screw and washer 15. Among them, the idler wheel 1 is assembled by successively fitting the wheel body 1-1 with a double-sided dust-proof bearing 1-2, a short positioning sleeve 1-3, and a long positioning sleeve 1-4, then fitting the end cover 1-5 with the wheel body 1-1, and finally screwing the screw 1-6 into the threaded hole of the wheel body 1-1; the idler wheel 1 is connected to the support body 5-1 by the long wheel shaft 6, and then fixed by the small nut and washer 13 and the large nut and washer 14; the tensioning wheel 3 is successively assembled by the wheel body 1-1, a double-sided dust-proof bearing 1-2, a short positioning sleeve 1-3, and an end cover 1-5, and then fixedly connected by the screw 1-6 and assembled with a U-shaped wheel seat 3-1 for connection with the support 5; the pull rod 10, the spring 11, and the pad 12 are connected to the support body 5-1; the short wheel shaft 7 assembles the tensioning wheel 3 with the wheel seat 9, and then fixedly connected by the screw and washer 15; the grinding wheel 4 is successively assembled by the wheel body a4-1, a double-sided dust-proof bearing 1-2, a short positioning sleeve 1-3, and an end cover 1-5, and then fixedly connected by the screw 1-6 and assembled with a U-shaped wheel seat 3-1, and finally the grinding wheel 4 is assembled with the support body 5-1 by the short wheel shaft 7, and then fixedly connected by the screw and washer 15. The other end of the support 5-1 is fixedly connected to the gland 5-2 by a long screw 5-4, and then fixedly connected to the large arm 16 of the planetary grinding machine by a short screw 5-5.

[0035] The connection and support mechanism includes a large arm 16, a large arm motor bracket 17, a large arm moving plate 18, and a large arm rotating support plate 19. Among them, one end of the large arm 16 is connected to the support 5 of the multi-wheel abrasive belt machine, and the other end is connected to the large arm motor bracket 17; the large arm motor bracket 17 is fixed on the large arm moving plate 18. The large arm rotating support plate 19 is connected to the rotating motor 20; the large arm moving plate 18 is installed on the large arm rotating support plate 19, and the large arm moving plate 18 can slide on the large arm rotating support plate 19.

[0036] The rotation adjustment mechanism includes a rotating motor 20, a lifting motor 21, a lifting transmission box 22, and a main support frame 23. Among them, the lifting motor 21 and the lifting transmission box 22 are both installed on the main support frame 23, the rotating motor 20 is connected to the lifting transmission box 22, and the lifting motor 21 drives the lifting transmission box 22 to move, thereby driving the rotating motor 20 to slide on the main support frame 23, so as to adjust the position of the rotating motor 20.

[0037] Through the coordinated adjustment of the lifting motor 21 and the large arm moving plate 18, the belt grinder is placed in the correct rotation position. The rotation motor 20 drives the large arm rotation support plate 19 to perform a circular motion, thereby enabling the belt grinder to perform a cutting circular motion around the inner wall of the internal mixer. At the same time, the belt grinder rotates at a high speed by itself to polish the inner wall of the internal mixer.

Claims

1. A special equipment for multi-wheel abrasive belt grinding and polishing the surfacing alloy surface of an internal mixer, characterized in that, The special equipment for multi-wheel abrasive belt grinding and polishing the surfacing alloy surface of the internal mixer includes a multi-wheel abrasive belt grinding mechanism, a connection and support mechanism, and a rotation and adjustment mechanism; the three are connected in sequence. The multi-wheel abrasive belt grinding mechanism includes idler wheels (1), a driving wheel (2), a tensioning wheel (3), grinding wheels (4), a support (5), a pull rod (10), and a spring (11); multiple idler wheels (1) are provided; the idler wheels (1), the driving wheel (2), the tensioning wheel (3), and the grinding wheels (4) are all installed on the support (5), and the abrasive belt passes through the idler wheels (1), the driving wheel (2), the tensioning wheel (3), and the grinding wheels (4) to form a complete closed loop. A groove is provided on the support (5); a wheel seat (9) is arranged in the groove, and the wheel seat (9) is fixedly connected to the tensioning wheel (3); a round hole is provided on the side of the support (5), a spring (11) is sleeved on the pull rod (10), and one end of the pull rod (10) passes through the round hole and the wheel seat (9) in sequence and then is connected to the wheel seat (9); by controlling the position of the pull rod (10), the displacement of the tensioning wheel (3) is adjusted.

2. The special equipment for multi-wheel group abrasive belt grinding and polishing the surfacing alloy surface of the internal mixer according to claim 1, characterized in that, The tensioning wheel (3) and the grinding wheels (4) are located on the same side; the idler wheels (1) are located in the abrasive belt path between the driving wheel (2) and the grinding wheels (4) or in the abrasive belt path between the driving wheel (2) and the tensioning wheel (3), and the idler wheels (1) are located at the edge position on the support (5) or the distance between the idler wheels (1) in the adjacent abrasive belt connection relationship reaches the maximum limit.

3. The special equipment for multi-wheel set abrasive belt grinding and polishing the surfacing alloy surface of the internal mixer according to claim 2, characterized in that, Two idler wheels (1) are provided; the first idler wheel (1) is located at the edge of the support (5); the second idler wheel (1) is located at the middle position of the support (5); the abrasive belt passes through the driving wheel (2), the first idler wheel (1), the grinding wheels (4), the tensioning wheel (3), the second idler wheel (1) in sequence and then returns to the driving wheel (2) to form a complete closed loop.

4. The special equipment for multi-wheel-group abrasive belt grinding and polishing the surfacing alloy surface of the internal mixer according to any one of claims 1-3, characterized in that, The connection and support mechanism includes the large arm of the planetary grinder (16), the large arm motor bracket (17), the large arm moving plate (18), and the large arm rotating support plate (19); one end of the large arm of the planetary grinder (16) is connected to the support (5), and the other end is connected to the large arm motor bracket (17); the large arm motor bracket (17) is fixed on the large arm moving plate (18); the large arm moving plate (18) is installed on the large arm rotating support plate (19) and slides on the large arm rotating support plate (19), so as to adjust the contact point position between the multi-wheel abrasive belt grinding machine and the workpiece; the large arm rotating support plate (19) is connected to the rotating motor (20).

5. The special equipment for multi-wheel group abrasive belt grinding and polishing the surfacing alloy surface of the internal mixer according to any one of claims 1-3, characterized in that, The rotation and adjustment mechanism includes a rotating motor (20), a lifting motor (21), a lifting transmission box (22), and a main support frame (23); the lifting motor (21) and the lifting transmission box (22) are both installed on the main support frame (23), the rotating motor (20) is connected to the lifting transmission box (22), and the lifting motor (21) drives the lifting transmission box (22) to move, thereby driving the rotating motor (20) to slide on the main support frame (23), so as to adjust the position of the rotating motor (20). Cooperating with the large arm moving plate (18), the rotation center of the driving shaft of the multi-wheel abrasive belt grinding machine is consistent with the geometric center of the inner wall of the internal mixer, and then the rotating motor (20) drives the multi-wheel abrasive belt grinding machine to perform a grinding circular motion.

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