Automatic centrifugal casting production line

Abstract

The utility model discloses an automatic centrifugal casting production line which comprises a bottom pouring type casting machine, a rotary stepping centrifugal machine and a sand box circulating mechanism, the bottom pouring type casting machine carries out molten steel pouring on the position of a pouring gate of the centrifugal machine through a bottom pouring discharging port in a cantilever mode, and after pouring is completed, the centrifugal machine is driven by a rotary driver to rotate around the bottom pouring discharging port. The sand box after pouring is completed is rotated to a sand box circulating mechanism, a gripper exchanges the sand box after pouring and an empty sand box by 180 degrees, the empty sand box is poured again on a rotary stepping centrifugal machine, and the sand box after pouring passes through a sand box positioning roller way, a steering track, a sand box cooling and conveying roller way, a track changing track and a sand box feeding roller way and then is conveyed to the sand box circulating mechanism. The pouring mold is taken out by the mechanical gripper on the track changing track, the empty sand box finally returns to the sand box positioning roller way, the pouring mold is cyclically loaded and unloaded, the production line is compact in overall arrangement structure and stable in equipment, all production procedures are automatic, the production takt is greatly shortened, and the production efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of casting, in particular to an automatic centrifugal casting production line. Background Art

[0002] At present, the high-end casting product manufacturing industry is developing towards high-speed automation, and the production processes of parts of high-end products such as automobiles, aviation, and non-ferrous metals are also constantly improving. Centrifugal casting is to inject molten metal into a rapidly rotating mold to make the molten metal do centrifugal motion to fill the mold. After centrifugal casting, demolding is required. At present, the automation degree of casting production equipment and manual pouring production lines is relatively low. Most rely on manual operation for steel water casting, and a few rely on traditional pouring machines for steel water casting. The casting production efficiency is low, which greatly limits the production efficiency and also restricts the development of the industry.

[0003] Therefore, we propose an automatic centrifugal casting production line. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an automatic centrifugal casting production line with a compact overall layout structure, stable equipment, automation of each process in casting production, and a greatly shortened production cycle, so as to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: an automatic centrifugal casting production line, including a pouring machine for feeding, a rotary stepping centrifuge, and a sand box circulation mechanism for replacing sand boxes;

[0006] The rotary stepping centrifuge includes a support, a rotary driver is arranged on the top of the support, a circular rotary tray is arranged on the top of the rotary driver, a plurality of pouring stations arranged in a circumferential direction are arranged on the rotary tray, a centrifuge is arranged on the pouring station, and the discharge port of the pouring machine is butted against the centrifuge;

[0007] The sand box circulation mechanism comprises a sand box loading and unloading unit, a steering track, a sand box cooling and conveying roller, a lane changing track and a sand box incoming roller through which the sand boxes pass in sequence, the sand box loading and unloading unit comprises a bracket, two vertical lifting and guiding square columns are arranged in parallel in the bracket, a screw elevator is arranged on the top of the bracket, a screw of the screw elevator is arranged at the center line position of the two lifting and guiding square columns, the screw is driven up and down by a screw lifting motor to move; a connecting column is connected to the bottom of the screw, a bottom plate is connected to the extended part of the connecting column, two grippers are symmetrically arranged on both sides of the bottom plate, and the grippers are used to grab the sand box, a rotating motor 1 is also arranged on the top of the bracket, a small gear is arranged on the output shaft of the rotating motor 1, a large gear is engaged with the small gear, and the bottom of the large gear is connected to the top of the lifting and guiding square column, the screw is sleeved in the large gear, and when the rotating motor 1 drives the large gear to rotate, the lifting and guiding square column and the screw are also driven to rotate accordingly;

[0008] A sand box positioning roller is provided below the gripper, and the gripper can place the grabbed sand box on the sand box positioning roller. Both ends of the sand box positioning roller are docked with the turning track, and the two turning track are respectively docked with the sand box cooling conveying roller and the sand box incoming roller, and the other ends of the sand box cooling conveying roller and the sand box incoming roller are docked with both ends of the track changing track to form a circulation channel.

[0009] Preferably, a base is provided at the bottom of the steering track, and a second rotating motor is provided in the base. The steering track rotates 90° under the drive of the second rotating motor.

[0010] Preferably, the centrifuge includes a support frame fixedly mounted on the rotating tray, a rotating support bearing is fixedly arranged in the support frame, a rotating body is arranged in the rotating support bearing, a sand box positioning retaining frame is fixedly connected to the top of the rotating body, a sand box is arranged in the sand box positioning retaining frame, a driven wheel is installed at the bottom end of the rotating body, a centrifugal motor is also installed on the support frame, a driving wheel is equipped on the output shaft of the centrifugal motor, and the driving wheel and the driven wheel are connected by belt transmission.

[0011] Preferably, the pouring machine is a bottom pouring machine.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: This production line includes a bottom-pouring casting machine, a rotary step centrifuge, and a sand box circulation mechanism. The bottom-pouring casting machine aligns the bottom-pouring discharge port with the centrifuge gate position in a cantilever form for pouring molten steel. After pouring is completed, the rotary step centrifuge, driven by a rotary drive, rotates the sand box after pouring to the position of the sand box circulation mechanism. The gripper exchanges the sand box after pouring and the empty sand box by 180°. The empty sand box is poured again in the rotary step centrifuge. After the sand box after pouring passes through the sand box positioning roller path, the turning track, the sand box cooling conveying roller path, the lane-changing track, and the sand box incoming material roller path, the mechanical gripper takes out the casting mold on the lane-changing track, and the empty sand box finally returns to the sand box positioning roller path again for cyclic pouring of the empty sand box. The overall layout of this production line is compact, the equipment is stable, each process of casting production is automated, the production beat is greatly shortened, and the production efficiency is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is the front view of the present utility model;

[0014] Figure 2 is the top view of the present utility model;

[0015] Figure 3 is Figure 1 the front view of the centrifuge in

[0016] In the figure: 1, casting machine; 2, rotary step centrifuge; 3, support; 4, rotary drive; 5, rotary tray; 6, pouring station; 7, centrifuge; 8, turning track; 9, sand box cooling conveying roller path; 10, lane-changing track; 11, sand box incoming material roller path; 12, bracket; 13, lifting guiding square column; 14, screw jack; 15, screw; 17, connecting column; 18, bottom plate; 19, gripper; 20, rotary motor 1; 21, large gear; 22, sand box positioning roller path; 23, base; 24, rotary motor 2; 25, support frame; 26, rotary support bearing; 27, rotating body; 28, sand box positioning holder; 29, sand box; 30, driven wheel; 31, centrifugal motor; 32, driving wheel; 33, belt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The present utility model will be described in detail below. The technical solutions in the embodiments of the present utility model are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0018] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0019] Please refer to Figure 1 , the present utility model includes a pouring machine 1 for feeding, a rotary stepping centrifuge 2, and a sand box circulation mechanism for replacing the sand box;

[0020] The rotary stepping centrifuge 2 includes a support 3. A rotary driver 4 is provided at the top of the support 3. A circular rotary tray 5 is provided at the top of the rotary driver 4. A plurality of pouring stations 6 arranged in a circumferential direction are provided on the rotary tray 5. A centrifuge 7 is provided at the pouring station 6. The discharge port of the pouring machine 1 is butted against the centrifuge 7;

[0021] Please refer to Figure 1-2 , the sand box circulation mechanism includes a sand box loading and unloading unit, a turning track 8, a sand box cooling and conveying roller path 9, a lane-changing track 10, and a sand box incoming material roller path 11 through which the sand box passes in sequence. The sand box loading and unloading unit includes a bracket 12. Two vertical lifting guide square columns 13 are arranged in parallel inside the bracket 12. A lead screw elevator 14 is provided at the top of the bracket 12. The lead screw 15 of the lead screw elevator 14 is arranged at the center line position of the two lifting guide square columns 13. The lead screw 15 is driven to move up and down by a lead screw lifting motor 16. A connecting column 17 is connected to the bottom of the lead screw 15. A bottom plate 18 is connected to the protruding part of the connecting column 17. Two grippers 19 are symmetrically arranged on both sides of the bottom plate 18. The grippers 19 are used to grab the sand box. A first rotary motor 20 is also provided at the top of the bracket 12. A small gear is provided on the output shaft of the first rotary motor 20. The small gear meshes with a large gear 21. The bottom of the large gear 21 is connected to the top of the lifting guide square column 13. The lead screw 15 is sleeved inside the large gear 21. When the first rotary motor 20 drives the large gear 21 to rotate, the lifting guide square column 13 and the lead screw 15 are also driven to rotate therewith;

[0022] A sand box positioning roller 22 is docked below the gripper 19, and the gripper 19 can place the grabbed sand box on the sand box positioning roller 22. Both ends of the sand box positioning roller 22 are docked with the turning track 8, and the two turning tracks 8 are respectively docked with the sand box cooling conveying roller 9 and the sand box incoming roller 11. The other ends of the sand box cooling conveying roller 9 and the sand box incoming roller 11 are docked with both ends of the changing track 10 to form a circulation channel.

[0023] The bottom of the steering track 8 is provided with a base 23, and a rotating motor 24 is provided in the base 23. The steering track 8 is driven by the rotating motor 24 to rotate 90 degrees.

[0024] The pouring machine 1 is a bottom pouring type pouring machine.

[0025] Specifically, in this embodiment, the pouring machine 1 is a bottom pouring pouring machine, which is installed on the ground, adjacent to the rotating stepping centrifuge 2. The bottom pouring pouring machine aligns the bottom pouring outlet with the pouring position of the centrifuge 7 in the form of a cantilever to pour molten steel. After the pouring is completed, the rotating stepping centrifuge 2 is driven by the rotating driver 4 to rotate. The two grippers 19 of the sand box loading and unloading unit are respectively installed directly above the centrifuge 7 and the sand box positioning roller 22. When the sand box needs to be replaced, the grippers 19 simultaneously grab the two sand boxes, lift them up and rotate them 180°, and then descend and are placed on the pouring station 6 and the sand box positioning roller 22 respectively to complete the replacement process. The specific process of rising and rotating is that the bracket 12 is installed on the drum changing rack, two parallel lifting guide square columns 13 are installed in the bracket 12, a screw lift 14 is installed on the top of the bracket 12, the screw lift 14 is driven by a screw lift motor 16, the nut of the screw lift 14 is connected to the screw 15, the screw 15 is installed at the center line position of the two lifting guide square columns 13, a bottom plate 18 is installed at the bottom of the screw 15, and two grippers 19 are symmetrically installed at both ends of the bottom plate 18. When the screw lift motor 16 drives the nut of the screw lift 14 to rotate, it drives the screw 15 to rise and fall, thereby driving the bottom plate 18 and the lifting of the two grippers 19 complete the lifting process of the sand box; a rotating motor 20 is also installed on the bracket 12, and the rotating motor 20 drives the rotation of the small gear, thereby driving the rotation of the large gear 21. Since the bottom of the large gear 21 is fixedly connected to the two lifting guide square columns 13, the rotation of the two lifting guide square columns 13 is driven, and since the connecting column 17 is stuck between the two lifting guide square columns 13, the bottom plate 18 and the two grippers 19 are driven to rotate 180°, that is, the rotation process is completed. Through the above lifting and rotating 180° process, the process of replacing the sand box is realized.

[0026] When the sand box after pouring is placed on the sand box positioning roller 22, it is conveyed to the turning track 8. The turning track 8 rotates 90° under the drive of the rotating motor 24. The sand box after pouring is transferred to the sand box cooling conveying roller 9. When the sand box after pouring is on the sand box cooling conveying roller 9, it is cooled in an online cycle and then conveyed to the changing track 10. When on the changing track 10, the sand box after pouring is grabbed by the robot and the casting mold is taken out and put back. At this time, the empty sand box continues to move forward and is conveyed to the sand box incoming roller 11 and the turning track 8. The turning track 8 rotates 90° under the drive of the rotating motor 24, and conveys the empty sand box to the sand box positioning roller 22 again, completing a cycle.

[0027] See also Figure 3 The centrifuge 7 includes a support frame 25 fixedly mounted on the rotating tray 5, a rotating support bearing 26 is fixedly arranged in the support frame 25, a rotating body 27 is arranged in the rotating support bearing 26, a sand box positioning holder 28 is fixedly connected to the top of the rotating body 27, a sand box 29 is arranged in the sand box positioning holder 28, a driven wheel 30 is mounted at the bottom end of the rotating body 27, a centrifugal motor 31 is also mounted on the support frame 25, a driving wheel 32 is mounted on the output shaft of the centrifugal motor 31, and a belt 33 is connected between the driving wheel 32 and the driven wheel 30.

[0028] Specifically, in the present embodiment, there are generally 3 to 10 pouring stations 6, and in the present embodiment, 6 are taken as an example, the support 3 is fixed on the foundation, the rotating driver 4 is fastened and installed on the support 3 by bolts, the rotating tray 5 is fastened and installed on the rotating driver 4 by bolts, and the centrifuge 7 is fastened and installed on the pouring station 6 of the rotating tray 5 by bolts; under the drive of the centrifugal motor 31, the driving wheel 32 rotates, driving the rotation of the driven wheel 30, thereby driving the rotation of the rotating body 27, and the rotation of the rotating body 27 drives the rotation of the sand box positioning retainer 28 and the sand box 29, thereby realizing the centrifugal effect.

[0029] The working principle of this utility model:

[0030] The bottom-pouring casting machine pours molten steel into the sand box 29 of the rotary step centrifuge 2. The rotary step centrifuge 2 has multiple pouring stations 6, and the number can be 3 - 10. In this embodiment, 6 stations are taken as an example for illustration. After pouring is completed, the rotary step centrifuge 2 starts to rotate. When the next centrifuge 7 to be poured arrives, the next pouring is carried out, and this process circulates in turn. At the same time, the gripper 19 of the sand box loading and unloading unit loads and unloads the sand box. While grasping the sand box 29 that has been poured by the rotary step centrifuge 2, another gripper 19 grasps the sand box on the sand box positioning roller path 22. After clamping, it rotates 180°. The poured sand box is placed on the sand box positioning roller path 22, and the empty sand box is placed on the pouring station 6 of the rotary step centrifuge 2, and this process circulates in turn. The turning track 8 is responsible for turning the poured sand box 90° during the conveying process and conveying it to the sand box cooling conveying roller path 9. The sand box cooling conveying roller path 9 is responsible for circulating and cooling the poured sand box online. The lane-changing track 10 is responsible for the parallel lane-changing conveying of the sand box and the function of the mechanical gripper to pick up the casting mold, and finally returns to the sand box incoming material roller path 11. The sand box incoming material roller path 11 is responsible for conveying the empty sand box. This production line circulates the loading and unloading of the casting mold to complete the cyclic pouring of molten steel. The rotary feeding method for each process makes the overall layout of the production line compact, the equipment stable, greatly shortens the production cycle, and effectively improves the production efficiency.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic centrifugal casting production line, characterized in that: It includes a pouring machine (1) for feeding, a rotary step centrifuge (2), and a sand box circulation mechanism for replacing sand boxes; The rotary step centrifuge (2) includes a support (3). At the top of the support (3), there is a rotary drive (4). At the top of the rotary drive (4), there is a circular rotary tray (5). On the rotary tray (5), there are a plurality of pouring stations (6) arranged circumferentially. On the pouring stations (6), there are centrifuges (7). The discharge port of the pouring machine (1) is docked with the centrifuge (7); The sand box circulation mechanism includes a sand box loading and unloading unit, a steering track (8), a sand box cooling and conveying roller path (9), a lane-changing track (10), and a sand box incoming material roller path (11) through which the sand boxes pass in sequence. The sand box loading and unloading unit includes a bracket (12). Inside the bracket (12), two vertical lifting guide square columns (13) are arranged in parallel. At the top of the bracket (12), there is a lead screw lift (14). The lead screw (15) of the lead screw lift (14) is arranged at the center line position of the two lifting guide square columns (13). The lead screw (15) is driven to move up and down by a lead screw lifting motor (16). At the bottom of the lead screw (15), there is a connecting column (17). The protruding part of the connecting column (17) is connected with a bottom plate (18). On both sides of the bottom plate (18), two grippers (19) are symmetrically arranged. The grippers (19) are used to grab the sand boxes. At the top of the bracket (12), there is also a first rotary motor (20). On the output shaft of the first rotary motor (20), there is a small gear. The small gear meshes with a large gear (21). The bottom of the large gear (21) is connected with the top of the lifting guide square column (13). The lead screw (15) is sleeved inside the large gear (21). When the first rotary motor (20) drives the large gear (21) to rotate, it also drives the lifting guide square column (13) and the lead screw (15) to rotate accordingly; Below the gripper (19), there is a sand box positioning roller path (22) in docking connection. The gripper (19) can place the grabbed sand box on the sand box positioning roller path (22). The two ends of the sand box positioning roller path (22) are docked with the steering track (8). The two steering tracks (8) are respectively docked with the sand box cooling and conveying roller path (9) and the sand box incoming material roller path (11). The other ends of the sand box cooling and conveying roller path (9) and the sand box incoming material roller path (11) are both docked with the two ends of the lane-changing track (10), forming a circulation channel.

2. The automatic centrifugal casting production line according to claim 1, wherein: At the bottom of the steering track (8), there is a base (23). Inside the base (23), there is a second rotary motor (24). The steering track (8) rotates 90° under the drive of the second rotary motor (24).

3. The automatic centrifugal casting production line according to claim 1, characterized in that: The centrifuge (7) includes a support frame (25) fixedly installed on the rotary tray (5). A rotary support bearing (26) is fixedly provided inside the support frame (25). A rotating body (27) is arranged inside the rotary support bearing (26). The top end of the rotating body (27) is fixedly connected to a sand box positioning and holding frame (28). A sand box (29) is arranged inside the sand box positioning and holding frame (28). The bottom end of the rotating body (27) is equipped with a driven wheel (30). An eccentric motor (31) is also installed on the support frame (25). A driving wheel (32) is equipped on the output shaft of the eccentric motor (31). The driving wheel (32) and the driven wheel (30) are connected by belt (33) transmission.

4. The automatic centrifugal casting production line according to claim 1, wherein: The pouring machine (1) is a bottom-pouring type pouring machine.

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