Die preheating device for aluminum alloy casting

Abstract

The utility model relates to the technical field of dies, and discloses a die preheating device for aluminum alloy casting, which comprises a bottom plate, the upper end surface of the bottom plate is fixedly connected with a protection frame, the middle of the side end surface of the protection frame is fixedly connected with a first fixing plate, and the edge of the upper end surface of the first fixing plate is fixedly connected with an air cylinder. The output end of the air cylinder is fixedly connected with a first connecting plate, the end, away from the air cylinder, of the first connecting plate is fixedly connected with a first rack, the outer wall of one side of the first rack is in meshed connection with a first gear, the interior of the first gear is fixedly connected with a first rotating shaft, and the first rotating shaft penetrates through one end of the protection frame and extends into the protection frame; and a heating plate is arranged on the outer wall of the first rotating shaft. According to the utility model, through the arrangement of the first rack, the first gear and the first rotating shaft, each part of the mold can be uniformly heated, so that the casting defects caused by local overheating or supercooling can be reduced, and the overall quality of a casting is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a mold preheating device for aluminum alloy casting. Background Technique

[0002] Casting molds are frequently used and essential components in the manufacturing and production industries. The main purpose of casting molds is to manufacture qualified-shaped part workpieces. In aluminum alloy casting, mold preheating can improve casting quality and reduce defects, which is a key step in aluminum alloy casting.

[0003] Currently, when preheating casting molds, most of them place the whole mold in a heating furnace. During the preheating process, overall heating is achieved from the outside to the inside through heat conduction. However, this heating method is extremely likely to cause the phenomenon of local overcooling or overheating of the mold, thus affecting the quality of mold casting. Summary of the Utility Model

[0004] To make up for the above deficiencies, the utility model provides a mold preheating device for aluminum alloy casting, aiming to improve the problem of local overcooling or overheating that easily occurs during the preheating process of the mold.

[0005] To achieve the above object, the utility model provides the following technical solution: A mold preheating device for aluminum alloy casting, including a bottom plate, the upper surface of the bottom plate is fixedly connected with a protection frame, the middle of the side surface of the protection frame is fixedly connected with a first fixing plate, the edge of the upper surface of the first fixing plate is fixedly connected with a cylinder, the output end of the cylinder is fixedly connected with a first connecting plate, the end of the first connecting plate away from the cylinder is fixedly connected with a first rack, one side outer wall of the first rack is meshed with a first gear, the inside of the first gear is fixedly connected with a first rotating shaft, the first rotating shaft penetrates through one end of the protection frame and extends into the inside of the protection frame, a heating plate is arranged on the outer wall of the first rotating shaft, the upper part of the inner wall of the protection frame is fixedly connected with a mounting plate, and a moving component is arranged inside the mounting plate.

[0006] Preferably, the moving component includes a sliding plate, a second rack and a third rack. The upper part of the surface of one end of the protection frame adjacent to the first fixed plate is fixedly connected with a motor. The output end of the motor penetrates through one end surface of the protection frame and is fixedly connected with a second rotating shaft. The second rotating shaft penetrates through one end surface of the protection frame and extends into the interior of the mounting plate to be fixedly connected with a threaded rod. The outer wall of the threaded rod is threadedly connected with the sliding plate. Two second racks are fixedly connected to the surface of the end of the sliding plate away from the motor. The outer wall of one side of the second rack is meshed with a second gear. The second gear is meshed with the third rack on the side away from the second rack. The upper surfaces of the sliding plate and the moving plate are both fixedly connected with two third connecting plates. The upper surfaces of every two third connecting plates are fixedly connected with the same clamping plate.

[0007] Preferably, a blower is fixedly connected to the upper surface of the bottom plate. The outer end of the blower is fixedly connected with an air duct. One end of the air duct away from the blower penetrates through one end surface of the protection frame and extends into the interior of the protection frame.

[0008] Preferably, a slide rail is fixedly connected to the upper surface of the first fixed plate. The upper surface of the end of the first rack away from the first gear is fixedly connected with a second connecting plate. The second connecting plate is slidably connected with the slide rail.

[0009] Preferably, four guide rails are fixedly connected to the upper inner wall of the mounting plate. The sliding plate is slidably connected with the four guide rails.

[0010] Preferably, a second fixed plate is fixedly connected to the middle of the upper inner wall of the mounting plate. One end of the threaded rod away from the motor is rotatably connected with the second fixed plate.

[0011] Preferably, the bottom end of the second gear is rotatably connected with the upper inner wall of the mounting plate.

[0012] Preferably, the heating plate is located inside the protection frame.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, through the arrangement of the first rack, the first gear and the first rotating shaft, the cylinder can control the movement of the first rack, thereby driving the rotation of the first gear, and then realizing the flipping of the heating plate through the first rotating shaft, which can make more effective use of the heat of the heating plate, ensure that all parts of the mold are evenly heated, help to reduce the casting defects caused by local overheating or overcooling, and improve the overall quality of the casting.

[0015] 2. In the present utility model, through the arrangement of the moving component, the threaded rod and the clamping plate, the motor can indirectly drive the threaded rod to rotate, thereby causing the sliding plate to move. Then, through the second gear, the second rack and the third rack, the moving plate and the sliding plate move relative to or away from each other, so that the two clamping plates can quickly install or disassemble the mold, thereby improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structure diagram of a mold preheating device for aluminum alloy casting proposed by the present utility model;

[0017] Figure 2 is a front sectional view of a mold preheating device for aluminum alloy casting proposed by the present utility model;

[0018] Figure 3 is a structural schematic diagram of the cylinder, the first gear and the heating plate of a mold preheating device for aluminum alloy casting proposed by the present utility model;

[0019] Figure 4 is a top sectional view of the mounting plate of a mold preheating device for aluminum alloy casting proposed by the present utility model;

[0020] Figure 5 is a structural schematic diagram of the moving component and the clamping plate of a mold preheating device for aluminum alloy casting proposed by the present utility model.

[0021] LEGEND DESCRIPTION:

[0022] 1. Protection frame; 2. First fixing plate; 3. Bottom plate; 4. Blower; 5. Air duct; 6. Motor; 7. First gear; 8. Heating plate; 9. Mounting plate; 10. Cylinder; 11. First connecting plate; 12. First rack; 13. Slide rail; 14. Second connecting plate; 15. First rotating shaft; 16. Second rotating shaft; 17. Threaded rod; 18. Sliding plate; 19. Third connecting plate; 20. Clamping plate; 21. Second rack; 22. Third rack; 23. Second gear; 24. Moving plate; 25. Guide rail; 26. Second fixing plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the specification drawings of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0024] Refer to Figures 1-3, an embodiment provided by the present utility model: a mold preheating device for aluminum alloy casting, including a bottom plate 3. The upper surface of the bottom plate 3 is fixedly connected with a protection frame 1. The inner walls of the four sides of the protection frame 1 are all coated with heat-insulating paint. The middle of the side surface of the protection frame 1 is fixedly connected with a first fixing plate 2. The edge of the upper surface of the first fixing plate 2 is fixedly connected with a cylinder 10. The output end of the cylinder 10 is fixedly connected with a first connecting plate 11. One end of the first connecting plate 11 away from the cylinder 10 is fixedly connected with a first rack 12. The upper surface of the first fixing plate 2 is fixedly connected with a slide rail 13. One end surface of the first rack 12 away from the first gear 7 is fixedly connected with a second connecting plate 14. The second connecting plate 14 is slidably connected with the slide rail 13. One side outer wall of the first rack 12 is meshed with a first gear 7. The inside of the first gear 7 is fixedly connected with a first rotating shaft 15. One end of the first rotating shaft 15 penetrates through the protection frame 1 and extends into the interior of the protection frame 1. The other end of the first rotating shaft 15 extends out of the protection frame 1, and a part of the first rotating shaft 15 is connected to the interior of the protection frame 1 through a bearing. A heating plate 8 is arranged on the outer wall of the first rotating shaft 15. The heating plate 8 is located inside the protection frame 1. The upper part of the inner wall of the protection frame 1 is fixedly connected with a mounting plate 9. The mounting plate 9 is only connected to the inner walls of the two sides of the protection frame 1. The area of the mounting plate 9 is smaller than the inner area of the protection frame 1, so as to leave a gap for hot air to flow. The mounting plate 9 is made of a material with good thermal conductivity (copper), and a moving component is arranged inside the mounting plate 9.

[0025] Specifically, except for the mounting plate 9, the components of this device are preferably made of refractory metal (nickel-based alloy). The cylinder 10 is selected to have a self-locking function. The movement of the first rack 12 is indirectly controlled by the cylinder 10, so that the first gear 7 rotates, and then the first rotating shaft 15 drives the heating plate 8 to flip. Flipping the heating plate 8 can promote the convection of hot air, help the hot air to be more evenly distributed on the mold surface, and thus improve the preheating efficiency. The flow of hot air helps to eliminate cold spots, ensure that the mold is evenly heated in each area, and avoid the phenomenon of local overcooling or overheating on the mold surface.

[0026] Refer to Figure 2 , Figure 4 and Figure 5, the moving components include a sliding plate 18, a second rack 21 and a third rack 22. One end surface upper part of the protection frame 1 adjacent to the first fixed plate 2 is fixedly connected with a motor 6. The output end of the motor 6 penetrates through one end surface of the protection frame 1 and is fixedly connected with a second rotating shaft 16. The second rotating shaft 16 penetrates through one end surface of the protection frame 1 and extends into the interior of the mounting plate 9 and is fixedly connected with a threaded rod 17. The middle part of the inner upper wall of the mounting plate 9 is fixedly connected with a second fixed plate 26. The end of the threaded rod 17 far from the motor 6 is rotatably connected with the second fixed plate 26. The outer wall of the threaded rod 17 is threadedly connected with the sliding plate 18. Threads are provided inside the sliding plate 18. Four guide rails 25 are fixedly connected to the inner upper wall of the mounting plate 9. The sliding plate 18 is slidably connected with the four guide rails 25. The moving plate 24 is also slidably connected with the four guide rails 25. The second rack 21 and the third rack 22 are respectively slidably connected with each guide rail 25. Two second racks 21 are fixedly connected to one end surface of the sliding plate 18 far from the motor 6. A second gear 23 is meshed with the outer wall of one side of the second rack 21. The bottom end of the second gear 23 is rotatably connected with the inner upper wall of the mounting plate 9. A third rack 22 is meshed with the side of the second gear 23 far from the second rack 21. The end surfaces of the two third racks 22 far from the clamping plate 20 are fixedly connected to the same moving plate 24. Two third connecting plates 19 are fixedly connected to the upper end surfaces of the sliding plate 18 and the moving plate 24. A chute for the movement of the third connecting plate 19 is provided on the upper end surface of the mounting plate 9. The upper end surfaces of every two third connecting plates 19 are fixedly connected to the same clamping plate 20.

[0027] Specifically, the motor 6 drives the second rotating shaft 16 to control the rotation of the threaded rod 17, so as to drive the sliding plate 18 to move. Through the settings of the second rack 21, the second gear 23 and the third rack 22, the moving direction of the moving plate 24 can be opposite or relative to the moving direction of the sliding plate 18. Therefore, the moving directions of the two clamping plates 20 are opposite or relative, so as to realize the rapid disassembly and installation of the mold.

[0028] Refer to Figure 1 and 2 , a blower 4 is fixedly connected to the upper end surface of the bottom plate 3. An air duct 5 is fixedly connected to the outer end of the blower 4. One end of the air duct 5 far from the blower 4 penetrates through one end surface of the protection frame 1 and extends into the interior of the protection frame 1.

[0029] Specifically, the wind generated by the blower 4 is used to accelerate the flow of the hot air inside the protection frame 1, so as to improve the efficiency of mold preheating.

[0030] Working principle: The piston rod of the cylinder 10 moves, thereby driving the first rack 12 to move. Therefore, the first gear 7 can drive the first rotating shaft 15 to rotate, so that the heating plate 8 can be flipped to facilitate the flow of hot air; the motor 6 drives the threaded rod 17 to rotate through the second rotating shaft 16, thereby moving the slide plate 18. Then, through the second gear 23, the second rack 21 and the third rack 22, the moving direction of the moving plate 24 is opposite to that of the slide plate 18. Therefore, the moving directions of the two clamping plates 20 are opposite or opposite to each other, and the installation and disassembly of the mold can be quickly completed.

[0031] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A mold preheating device for aluminum alloy casting, comprising a bottom plate (3), characterized in that: The upper end surface of the bottom plate (3) is fixedly connected to a protective frame (1). The middle of the side end surface of the protective frame (1) is fixedly connected to a first fixing plate (2). The edge of the upper end surface of the first fixing plate (2) is fixedly connected to a cylinder (10). The output end of the cylinder (10) is fixedly connected to a first connecting plate (11). One end of the first connecting plate (11) away from the cylinder (10) is fixedly connected to a first rack (12). One side outer wall of the first rack (12) is meshed with a first gear (7). The inside of the first gear (7) is fixedly connected to a first rotating shaft (15). One end of the first rotating shaft (15) passes through the protective frame (1) and extends into the protective frame (1). A heating plate (8) is arranged on the outer wall of the first rotating shaft (15). The upper part of the inner wall of the protective frame (1) is fixedly connected to a mounting plate (9). A moving component is arranged inside the mounting plate (9).

2. The mold preheating device for aluminum alloy casting according to claim 1, characterized in that: The moving component includes a sliding plate (18), a second rack (21) and a third rack (22). The upper part of the surface of the protective frame (1) adjacent to the first fixing plate (2) is fixedly connected to a motor (6). The output end of the motor (6) passes through one end surface of the protective frame (1) and is fixedly connected to a second rotating shaft (16). One end of the second rotating shaft (16) passes through one end surface of the protective frame (1) and extends into the mounting plate (9) and is fixedly connected to a threaded rod (17). The outer wall of the threaded rod (17) is threadedly connected to the sliding plate (18). Two second racks (21) are fixedly connected to one end surface of the sliding plate (18) away from the motor (6). One side outer wall of the second rack (21) is meshed with a second gear (23). The second gear (23) is meshed with a third rack (22) on the side away from the second rack (21). The same moving plate (24) is fixedly connected to the surface of one end of the two third racks (22) away from the clamping plate (20). Two third connecting plates (19) are fixedly connected to the upper end surfaces of both the sliding plate (18) and the moving plate (24). The same clamping plate (20) is fixedly connected to the upper end surfaces of every two of the third connecting plates (19).

3. The mold preheating device for aluminum alloy casting according to claim 1, characterized in that: The upper end surface of the bottom plate (3) is fixedly connected to a blower (4). The outer end of the blower (4) is fixedly connected to an air duct (5). One end of the air duct (5) away from the blower (4) passes through one end surface of the protective frame (1) and extends into the protective frame (1).

4. A mold preheating device for aluminum alloy casting according to claim 1, characterized in that: The upper end surface of the first fixing plate (2) is fixedly connected to a slide rail (13). The surface of one end of the first rack (12) away from the first gear (7) is fixedly connected to a second connecting plate (14). The second connecting plate (14) is slidably connected to the slide rail (13).

5. The mold preheating device for aluminum alloy casting according to claim 2, characterized in that: Four guide rails (25) are fixedly connected to the upper inner wall of the mounting plate (9). The sliding plate (18) is slidably connected to the four guide rails (25).

6. The mold preheating device for aluminum alloy casting according to claim 2, characterized in that: A second fixing plate (26) is fixedly connected to the middle of the upper inner wall of the mounting plate (9). One end of the threaded rod (17) away from the motor (6) is rotatably connected to the second fixing plate (26).

7. A mold preheating device for aluminum alloy casting according to claim 2, characterized in that: The bottom end of the second gear (23) is rotatably connected to the inner upper wall of the mounting plate (9).

8. A mold preheating device for aluminum alloy casting according to claim 1, characterized in that: The heating plate (8) is located inside the protection frame (1).

Images