Vacuum sand suction device for phenolic resin sand molding

Abstract

The utility model discloses a vacuum sand suction device for phenolic resin sand molding, which comprises a sand box, a vacuum pump is fixed on the front surface of the sand box, an air pipe is fixed at the bottom of the vacuum pump, the other end of the air pipe is fixedly connected with the front surface of the sand box, and a plurality of supporting legs are fixed at the bottom of the sand box. A sand inlet pipe is fixed to the rear surface of the sand box, a sand pressing mechanism is arranged in the sand box, a hydraulic rod is started, the hydraulic rod pushes a pressing plate to move, the pressing plate compacts a sand pile downwards, a connecting rope pulls a rotating wheel to rotate when the pressing plate moves, and the rotating wheel drives a rotating rod on the right side and a large transmission gear to rotate; a large transmission gear drives a small transmission gear and a middle rotating rod to rotate, the middle rotating rod drives a round rod and a left rotating rod to rotate through a bevel gear, the left rotating rod drives a rotating gear to rotate, and the rotating gear drives a rotating plate to rotate through a tooth groove, so that sand on a sand pile can move, and the top of the sand pile is flat.

Description

Technical Field

[0001] The utility model relates to the technical field of sand suction devices, in particular to a vacuum sand suction device for phenolic resin sand molding. Background Art

[0002] Phenolic resin sand is mainly used as a material for molding sand in foundry production. ‌ Resin sand is widely used in modern foundry production. Phenolic resin sand has many advantages, such as good formability and high strength, which can meet the production needs of complex castings. The molding machine is a casting equipment used to make sand molds. It mainly includes: filling sand, filling loose molding sand into sand; compacting molding sand, compacting the loose molding sand in the sand box through different methods such as vibration, compaction, vibration pressure, and shot pressure. ‌

[0003] After searching, the existing patent (publication number: CN211515997U) discloses a vacuum sand suction system applied to a molding line, which belongs to the technical field of casting molding lines. It includes a compacting device and a sand box, and a negative pressure system is arranged on one side of the sand box, which can provide negative pressure for the sand box. When sand is put into the sand box, under the action of negative pressure, the compaction of the molding sand can be significantly increased, thereby improving the molding effect of the sand mold. The compacting device includes a driving part, a compacting cylinder and a compacting block. A plurality of compacting blocks are provided. The plurality of compacting blocks can further improve the molding effect of the sand mold, compact the molding sand on multiple small planes, and further increase the compaction of the sand mold. A first fixing part is provided at the top of the sand box, a first groove is provided on the first fixing part, a fixing column is provided inside the first groove, a second groove is provided on the outer sides of the first support frame and the second support frame, and a spring is provided between the fixing column and the first groove, thereby increasing the stability of the connection between the compacting device and the sand box.

[0004] It provides negative pressure for the sand box. When putting sand into the sand box, under the action of negative pressure, it can significantly increase the compactness of the molding sand and improve the molding effect of the sand mold. The compacting block can further improve the molding effect of the sand mold. It compacts the molding sand on multiple small planes to increase the compactness of the sand mold. However, it has its shortcomings. After the sand falls, a sand pile will be formed, which can only compact the high places and is difficult to compact the low places. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention provides a vacuum sand suction device for phenolic resin sand molding, which solves the problems raised by the above-mentioned background technology.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a vacuum sand suction device for phenolic resin sand molding, including a sand box, a vacuum pump is fixed to the front surface of the sand box, an air pipe is fixed to the bottom of the vacuum pump, the other end of the air pipe is fixedly connected to the front surface of the sand box, a plurality of supporting legs are fixed to the bottom of the sand box, a sand inlet pipe is fixed to the rear surface of the sand box, a sand pressing mechanism is provided inside the sand box, and the sand pressing mechanism includes a hydraulic rod, a pressure plate, a rotating plate, three rotating rods, a round rod, a rotating wheel, a connecting rope, a round shell and a plurality of connecting rods.

[0007] Preferably, the hydraulic rod is fixed to the top of the sand box, the bottom end of the output shaft of the hydraulic rod passes through the sand box and is fixedly connected to the top of the pressure plate, the rotating plate and the pressure plate are rotatably connected, a tooth groove is provided on the top of the rotating plate, the bottom of the rotating rod is rotatably connected to the top of the pressure plate, and the bottom end of the rotating rod on the left side passes through the pressure plate and is fixed with a rotating gear, and the rotating gear is meshed with the tooth groove.

[0008] Preferably, the outer side wall of the round rod is rotatably connected to a support plate, the bottom of the support plate is fixedly connected to the top of the pressure plate, a small transmission gear is fixed to the outer side wall of the middle rotating rod, a large transmission gear is fixed to the outer side wall of the rotating rod on the right side, the small transmission gear and the large transmission gear are meshed and connected, the inner side wall of the round shell is rotatably connected to the outer side wall of the rotating rod on the right side, a first clockwork spring is fixed inside the round shell, and the other end of the first clockwork spring is fixedly connected to the outer side wall of the rotating rod on the right side.

[0009] Preferably, the connecting rod is fixed to the outer wall of the round shell, the other end of the connecting rod is fixedly connected to the top of the pressure plate, the two rotating rods on the left and the round rod are connected by a bevel gear transmission, a guide block is fixed to the top of the pressure plate, the inner wall of the runner and the outer wall of the rotating rod on the right are fixedly connected, the connecting rope is wrapped around the outer wall of the runner, and the other end of the connecting rope passes through the guide block and is fixedly connected to the inner upper surface of the sand box.

[0010] Preferably, a plurality of vibration mechanisms are provided on the top of the pressure plate, and the vibration mechanisms include a fixed shell, a rotating block, a second clockwork spring, a winding wheel, a pull rope, a plurality of springs and a plurality of vibration blocks. The bottom of the fixed shell is fixedly connected to the top of the pressure plate, the rotating block is rotatably connected to the fixed shell, the outer wall of the rotating block is fixedly connected to the inner wall of the winding wheel, the pull rope is wound and fixed on the outer wall of the winding wheel, and the other end of the pull rope passes through the fixed shell and is fixedly connected to the inner upper surface of the sand box.

[0011] Preferably, the outer side wall of the rotating block is provided with a plurality of storage holes, the spring is fixed inside the storage hole, the other end of the spring is fixedly connected to the vibration block, the second clockwork spring is fixedly connected to the outer side wall of the rotating block, the other end of the second clockwork spring is fixedly connected to the inner side wall of the fixed shell, and the inner side wall of the fixed shell is provided with a plurality of vibration holes. Beneficial effects

[0012] The utility model provides a vacuum sand suction device for phenolic resin sand molding. Compared with the existing technology, it has the following advantages:

[0013] 1. The vacuum sand suction device for phenolic resin sand molding is provided with a sand pressing mechanism and the hydraulic rod is started. The hydraulic rod pushes the pressure plate to move, and the pressure plate compacts the sand pile downward. When the pressure plate moves, the connecting rope pulls the rotating wheel to rotate. The rotating wheel drives the right rotating rod and the large transmission gear to rotate, and the large transmission gear drives the small transmission gear and the middle rotating rod to rotate. The middle rotating rod drives the round rod and the left rotating rod to rotate through the bevel gear, and the left rotating rod drives the rotating gear to rotate. The rotating gear drives the rotating plate to rotate through the tooth groove, so that the sand on the sand pile can be moved and the top of the sand pile can be leveled.

[0014] 2. The vacuum sand suction device for phenolic resin sand molding is equipped with a vibration mechanism. When the pressure plate moves, the pull rope will pull the reel and the rotating block to rotate. The rotating block rotates with the vibration block. The vibration block moves out of the vibration hole. The rotating block continues to rotate, and the spring pushes the vibration block into the vibration hole. In this way, the vibration block and the vibration hole cooperate to make the pressure plate vibrate, which is convenient for compacting the sand pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of the utility model.

[0016] Figure 2 It is a structural schematic diagram of the interior of the sand box of the utility model.

[0017] Figure 3 It is a structural schematic diagram of the transfer plate of the utility model.

[0018] Figure 4 It is a schematic cross-sectional structural diagram of the fixed shell in the present utility model.

[0019] Figure 5 It is a schematic cross-sectional view of the circular shell in the utility model.

[0020] In the figure: 1. Vibration hole; 2. Support leg; 3. Air pipe; 4. Pull rope; 5. Vacuum pump; 6. Sand box; 7. Sand inlet pipe; 8. Hydraulic rod; 9. Pressing plate; 10. Vibration mechanism; 11. Rotating rod; 12. Round rod; 13. Support plate; 14. Small transmission gear; 15. Vibration block; 16. Spring; 17. Rotating wheel; 18. Connecting rod; 19. Large transmission gear; 20. Round shell; 21. Guide block; 22. Connecting rope; 23. Rotating plate; 24. Tooth groove; 25. Rotating gear; 26. Fixed shell; 27. Bevel gear; 28. Rotating block; 29. ​​Storage hole; 30. Winding wheel; 31. Second spring; 32. Sand pressing mechanism; 33. First spring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-5The utility model provides a technical solution: a vacuum sand suction device for phenolic resin sand molding, including a sand box 6, a vacuum pump 5 is fixed on the front surface of the sand box 6, an air pipe 3 is fixed on the bottom of the vacuum pump 5, the other end of the air pipe 3 is fixedly connected to the front surface of the sand box 6, a plurality of supporting legs 2 are fixed on the bottom of the sand box 6, a sand inlet pipe 7 is fixed on the rear surface of the sand box 6, a sand pressing mechanism 32 is provided inside the sand box 6, and the sand pressing mechanism 32 includes a hydraulic rod 8, a pressing plate 9, a rotating plate 23, three rotating rods 11, a round rod 12, a rotating wheel 17, a connecting rope 22, a round shell 20 and a plurality of connecting rods 18, the hydraulic rod 8 is fixed Fixed at the top of the sand box 6, the bottom end of the output shaft of the hydraulic rod 8 passes through the sand box 6 and is fixedly connected to the top of the pressure plate 9, the rotating plate 23 is rotatably connected to the pressure plate 9, and a tooth groove 24 is provided on the top of the rotating plate 23. The bottom of the rotating rod 11 is rotatably connected to the top of the pressure plate 9, and the bottom end of the left rotating rod 11 passes through the pressure plate 9 and is fixed with a rotating gear 25. The rotating gear 25 is meshed with the tooth groove 24. The outer wall of the round rod 12 is rotatably connected to the support plate 13. The bottom of the support plate 13 is fixedly connected to the top of the pressure plate 9. The outer wall of the middle rotating rod 11 is fixed with a small transmission gear 14. The outer side of the right rotating rod 11 A large transmission gear 19 is fixed to the wall, and the small transmission gear 14 is meshed with the large transmission gear 19. The inner wall of the round shell 20 is rotatably connected to the outer wall of the right rotating rod 11. A first spring 33 is fixed to the inside of the round shell 20, and the other end of the first spring 33 is fixedly connected to the outer wall of the right rotating rod 11. The connecting rod 18 is fixed to the outer wall of the round shell 20, and the other end of the connecting rod 18 is fixedly connected to the top of the pressure plate 9. The two rotating rods 11 on the left and the round rod 12 are connected by a bevel gear 27. The top of the pressure plate 9 is fixed with a guide block 21. The inner wall of the runner 17 and The outer wall of the right rotating rod 11 is fixedly connected, the connecting rope 22 is wrapped around the outer wall of the rotating wheel 17, and the other end of the connecting rope 22 passes through the guide block 21 and is fixedly connected to the inner upper surface of the sand box 6. The connecting rope 22 pulls the rotating wheel 17 to rotate, and the rotating wheel 17 rotates with the right rotating rod 11 and the large transmission gear 19, and the large transmission gear 19 rotates with the small transmission gear 14 and the middle rotating rod 11. The middle rotating rod 11 rotates the left rotating rod 11 and the rotating gear 25 through the bevel gear 27, and the rotating gear 25 rotates with the rotating plate 23, so that the sand on the sand pile can be moved and the top of the sand pile can be leveled.

[0023] Furthermore, a plurality of vibration mechanisms 10 are provided on the top of the pressure plate 9. The vibration mechanisms 10 include a fixed shell 26, a rotating block 28, a second spring 31, a winding wheel 30, a pull rope 4, a plurality of springs 16 and a plurality of vibration blocks 15. The bottom of the fixed shell 26 is fixedly connected to the top of the pressure plate 9, the rotating block 28 is rotatably connected to the fixed shell 26, the outer wall of the rotating block 28 is fixedly connected to the inner wall of the winding wheel 30, the pull rope 4 is wound and fixed to the outer wall of the winding wheel 30, and the other end of the pull rope 4 passes through the fixed shell 26 and is fixedly connected to the inner upper surface of the sand box 6. The outer wall of the rotating block 28 is provided with a plurality of storage holes 29, and the spring 16 is fixed. It is fixed inside the storage hole 29, the other end of the spring 16 is fixedly connected to the vibration block 15, the second clockwork spring 31 is fixedly connected to the outer wall of the rotating block 28, the other end of the second clockwork spring 31 is fixedly connected to the inner wall of the fixed shell 26, and the inner wall of the fixed shell 26 is provided with a plurality of vibration holes 1. The pull rope 4 pulls the winding wheel 30 and the rotating block 28 to rotate, and the rotating block 28 rotates with the vibration block 15, and the vibration block 15 moves out of the vibration hole 1. The rotating block 28 continues to rotate, and the spring 16 pushes the vibration block 15 into the vibration hole 1. In this way, the vibration block 15 and the vibration hole 1 cooperate to make the pressure plate 9 vibrate, which facilitates the compaction of the sand pile.

[0024] When working, the hydraulic rod 8 is started, the hydraulic rod 8 pushes the pressure plate 9 to move, and the pressure plate 9 compacts the sand pile downward. When the pressure plate 9 moves, the connecting rope 22 will pull the runner 17 to rotate, and the runner 17 drives the right rotating rod 11 and the large transmission gear 19 to rotate. The large transmission gear 19 drives the small transmission gear 14 and the middle rotating rod 11 to rotate. The middle rotating rod 11 drives the round rod 12 and the left rotating rod 11 to rotate through the bevel gear 27, and the left rotating rod 11 drives the rotating gear 25 to rotate. The rotating gear 25 drives the rotating plate 23 to rotate through the tooth groove 24, which can move the sand on the sand pile and make the top of the sand pile flat. The pressure plate 9 moves, and the pull rope 4 will pull the winding wheel 30 and the rotating block 28 to rotate. The rotating block 28 drives the vibrating block 15 to rotate. The vibrating block 15 moves out of the vibrating hole 1, and the rotating block 28 continues to rotate. The spring 16 pushes the vibrating block 15 into the vibrating hole 1, so that the vibrating block 15 cooperates with the vibrating hole 1 to make the pressure plate 9 vibrate, which facilitates the compaction of the sand pile.

[0025] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0026] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations. The phrase "includes an element defined by..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum sand suction device for phenolic resin sand molding, comprising a sand box (6), characterized in that: A vacuum pump (5) is fixed to the front surface of the sand box (6), an air pipe (3) is fixed to the bottom of the vacuum pump (5), the other end of the air pipe (3) is fixedly connected to the front surface of the sand box (6), a plurality of supporting legs (2) are fixed to the bottom of the sand box (6), a sand inlet pipe (7) is fixed to the rear surface of the sand box (6), and a sand pressing mechanism (32) is provided inside the sand box (6), the sand pressing mechanism (32) comprising a hydraulic rod (8), a pressing plate (9), a rotating plate (23), three rotating rods (11), a round rod (12), a rotating wheel (17), a connecting rope (22), a round shell (20) and a plurality of connecting rods (18).

2. The vacuum sand suction device for phenolic resin sand molding according to claim 1, characterized in that: The hydraulic rod (8) is fixed to the top of the sand box (6), the bottom end of the output shaft of the hydraulic rod (8) passes through the sand box (6) and is fixedly connected to the top of the pressure plate (9), the rotating plate (23) is rotatably connected to the pressure plate (9), the top of the rotating plate (23) is provided with a tooth groove (24), the bottom of the rotating rod (11) is rotatably connected to the top of the pressure plate (9), the bottom end of the rotating rod (11) on the left side passes through the pressure plate (9) and is fixed with a rotating gear (25), and the rotating gear (25) is meshed with the tooth groove (24).

3. The vacuum sand suction device for phenolic resin sand molding according to claim 2, characterized in that: The outer wall of the round rod (12) is rotatably connected to a support plate (13), the bottom of the support plate (13) is fixedly connected to the top of the pressure plate (9), the outer wall of the middle rotating rod (11) is fixed with a small transmission gear (14), the outer wall of the right rotating rod (11) is fixed with a large transmission gear (19), the small transmission gear (14) and the large transmission gear (19) are meshed and connected, the inner wall of the round shell (20) is rotatably connected to the outer wall of the right rotating rod (11), and a first spring (33) is fixed inside the round shell (20), and the other end of the first spring (33) is fixedly connected to the outer wall of the right rotating rod (11).

4. The vacuum sand suction device for phenolic resin sand molding according to claim 3, characterized in that: The connecting rod (18) is fixed to the outer wall of the circular shell (20), and the other end of the connecting rod (18) is fixedly connected to the top of the pressure plate (9). The two rotating rods (11) on the left and the round rod (12) are connected by a bevel gear (27). A guide block (21) is fixed to the top of the pressure plate (9). The inner wall of the rotating wheel (17) and the outer wall of the rotating rod (11) on the right are fixedly connected. The connecting rope (22) is wound around the outer wall of the rotating wheel (17), and the other end of the connecting rope (22) passes through the guide block (21) and is fixedly connected to the inner upper surface of the sand box (6).

5. The vacuum sand suction device for phenolic resin sand molding according to claim 4, characterized in that: A plurality of vibration mechanisms (10) are provided on the top of the pressure plate (9), and the vibration mechanisms (10) include a fixed shell (26), a rotating block (28), a second spring (31), a winding wheel (30), a pull rope (4), a plurality of springs (16) and a plurality of vibration blocks (15). The bottom of the fixed shell (26) is fixedly connected to the top of the pressure plate (9), the rotating block (28) is rotatably connected to the fixed shell (26), the outer wall of the rotating block (28) is fixedly connected to the inner wall of the winding wheel (30), the pull rope (4) is wound and fixed on the outer wall of the winding wheel (30), and the other end of the pull rope (4) passes through the fixed shell (26) and is fixedly connected to the inner upper surface of the sand box (6).

6. The vacuum sand suction device for phenolic resin sand molding according to claim 5, characterized in that: The outer wall of the rotating block (28) is provided with a plurality of receiving holes (29), the spring (16) is fixed inside the receiving hole (29), the other end of the spring (16) is fixedly connected to the vibration block (15), the second spring (31) is fixedly connected to the outer wall of the rotating block (28), the other end of the second spring (31) is fixedly connected to the inner wall of the fixed shell (26), and the inner wall of the fixed shell (26) is provided with a plurality of vibration holes (1).

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