Mould vacuumizing equipment

Abstract

The invention provides mold vacuumizing equipment which comprises a main shaft installed below a mold, a melting machine trolley drives the mold to move, the drift diameter of the main shaft is 120 mm, the main shaft is connected with a pipeline through a reducer union, and the drift diameter of the pipeline is 100 mm; the pipeline is of a fixed structure and extends to the back of the melting machine trolley to be provided with an on-off structure, the on-off structure is connected with the vacuumizing system through a butt joint device, and the butt joint device comprises a butt joint pipe capable of being connected with the vacuumizing system. The main shaft with the drift diameter of 120 mm is adopted, the reducer union is connected with the pipeline with the drift diameter of 100 mm, the pipeline is fixed to the trolley frame, a hose which moves along with the trolley and surrounds the drag chain and is at least 10 m long is omitted, the overall vacuumizing pipeline length and the turning frequency are reduced, and the vacuumizing efficiency and speed are improved.

Description

Technical Field

[0001] The invention relates to the technical field of melting machines, and in particular to a device for vacuuming a mold. Background Art

[0002] A melting machine is a device used to heat solid materials to a molten state. In industrial production, melting machines are usually used to heat metals, plastics or other materials to a liquid state for various processing or manufacturing processes. When the melting machine heats the molten sand, the spindle connects to the mold to vacuum the mold surface so that the sand is adsorbed on the mold surface. There are the following technical defects: the pipeline is installed on the drag chain with the original pipe routing trough structure. It is a long pipeline that moves with the trolley. The original pipeline has a length of at least 10 meters for the bare hose, and there are many turns in the middle. The overall vacuum pipeline is too long, the frequency of turning is large, and the vacuum effect of the spindle is not ideal.

[0003] Therefore, how to design a mold vacuuming device has become an urgent problem to be solved. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a mold vacuuming device to solve at least one of the above technical problems.

[0005] The technical solution of the present invention is: a mold vacuuming device, including a main shaft installed under the mold, a melting machine trolley drives the mold to move, the main shaft has a diameter of 120 mm, the main shaft is connected to the pipeline through a reducer, the pipeline has a diameter of 100 mm; the pipeline is a fixed structure, the pipeline extends to the back of the melting machine trolley to set an on-off structure, the on-off structure is connected to the vacuum system through a docking device, and the docking device includes a docking pipe that can be connected to the vacuum system.

[0006] The present invention adopts a main shaft with a diameter of 120mm, and then uses a reducer to connect a pipeline with a diameter of 100mm. The pipeline is fixed on the trolley frame, and the pipeline is extended to the back of the melting machine trolley to set an on-off structure. The on-off structure is connected to the vacuum system through a docking device. The diameter is increased, and the cross-sectional area of ​​the pipeline is increased. Under the condition of the same flow rate, the flow rate is increased, thereby improving the vacuum efficiency; the pipeline is changed from the original pipe-pipe wiring trough structure to a hard pipe extending to a fixed structure behind the trolley, and the at least 10-meter-long hose that follows the movement of the trolley and wraps around the drag chain is cancelled, thereby reducing the overall vacuum pipeline length and the bending frequency, and improving the vacuum efficiency and speed.

[0007] Preferably, the docking device includes a base, which is installed on the ground behind the melting machine trolley. A cylinder mounting plate is arranged on one side end face of the base, a shaft sleeve is arranged in the middle of the cylinder mounting plate, and a docking tube is located in the shaft sleeve. One end of the docking tube is connected to the cylinder connecting plate. Two cylinders arranged at intervals and two guide devices arranged at intervals are also arranged on the cylinder mounting plate. The piston end of the cylinder is exposed from the cylinder mounting plate, and the piston end of the cylinder can contact the cylinder connecting plate.

[0008] The present invention adopts a cylinder and a guide device fixed on a cylinder mounting plate, and the cylinder mounting plate is mounted on a base and fixed on the ground behind the melting machine trolley; a waist hole structure is arranged on the base; a butt pipe is fixed to the cylinder connecting plate, passes through the cylinder mounting plate, and is supported by a shaft sleeve installed on the cylinder mounting plate; the piston end of the cylinder drives the cylinder connecting plate to move, and drives the butt pipe to connect with the pipeline behind the melting machine trolley, thereby reducing the pipeline length and turns as a whole, and increasing the vacuum extraction efficiency and speed; the docking uses a longitudinal connection rather than a transverse connection form, which is convenient for positioning, and the waist hole structure arranged on the base is adjusted from the waist hole structure in two directions, and precise docking can be achieved by only adjusting the hard pipe to the right position. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the installation structure of the present invention.

[0010] Figure 2 It is a schematic diagram of the installation position of the docking device of the present invention.

[0011] Figure 3 It is a schematic diagram of the internal installation structure of the main shaft of the present invention.

[0012] Figure 4 It is a schematic diagram of the installation structure of the reduction motor of the present invention.

[0013] Figure 5 It is a schematic diagram of the installation structure of the docking device of the present invention.

[0014] Figure 6 It is a schematic diagram of the internal installation structure of the quick connector of the present invention.

[0015] In the figure: 1. Upper protective cover; 2. Lower protective cover; 3. Water pipe support plate; 5. Water outlet water pipe; 6. Water inlet water pipe; 7. Driven pulley; 8. Large round nut; 9. First spacer; 10. First bearing cover; 11. Spacer; 12. Second spacer; 13. Spindle housing; 14. First connecting plate; 15. Second connecting plate; 16. Water pipe guard ring; 17. Retaining ring; 18. Motor cover; 19. Speed ​​measuring support plate; 20. Tensioner Top plate; 21. Motor bracket; 22. Motor support; 23. Driving pulley; 24. Small round nut; 25. Speed ​​measuring gear; 26. Second bearing cover; 27. Main shaft; 28. Docking device; 29. ​​First joint; 30. Second joint; 2801. Base; 2802. Docking tube; 2803. Bushing; 2804. Stopper; 2805. Cylinder mounting plate; 2806. Cylinder connecting plate; 2807. Guide rod. DETAILED DESCRIPTION

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] See also Figure 1-6 The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0018] Embodiment 1: A mold vacuuming device, referring to Figure 1 , Figure 2 , Figure 5, including a main shaft 27 installed under the mold, the melting machine trolley drives the mold to move, the main shaft 27 has a diameter of 120 mm, the main shaft 27 is connected to the pipeline through a reducer, and the pipeline has a diameter of 100 mm; the pipeline is a fixed structure, and the pipeline extends to the back of the melting machine trolley to set an on-off structure, and the on-off structure is connected to the vacuum system through a docking device 28, and the docking device 28 includes a docking pipe 2802 that can be connected to the vacuum system. The present invention adopts a main shaft with a diameter of 120mm, and then uses a reducer to connect a pipeline with a diameter of 100mm. The pipeline is fixed on the trolley frame, and the pipeline is extended to the back of the melting machine trolley to set an on-off structure. The on-off structure is connected to the vacuum system through a docking device. The diameter is increased, and the cross-sectional area of ​​the pipeline is increased. Under the condition of the same flow rate, the flow rate is increased, thereby improving the vacuum efficiency; the pipeline is changed from the original pipe-pipe wiring trough structure to a hard pipe extending to a fixed structure behind the trolley, and the at least 10-meter-long hose that follows the movement of the trolley and wraps around the drag chain is cancelled, thereby reducing the overall vacuum pipeline length and the bending frequency, and improving the vacuum efficiency and speed.

[0019] Embodiment 2: Based on Embodiment 1, refer to Figure 5 The docking device 28 includes a base 2801, which is installed on the ground behind the melting machine trolley. A cylinder mounting plate 2805 is arranged on one side end face of the base 2801, and a shaft sleeve 2803 is arranged in the middle of the cylinder mounting plate 2805. The docking tube 2802 is located in the shaft sleeve 2803, and one end of the docking tube 2802 is connected to the cylinder connecting plate 2806. Two cylinders arranged at intervals and two guide devices arranged at intervals are also arranged on the cylinder mounting plate 2805. The piston end of the cylinder is exposed from the cylinder mounting plate 2805, and the piston end of the cylinder can contact the cylinder connecting plate 2806. The present invention adopts a cylinder and a guide device fixed on a cylinder mounting plate, and the cylinder mounting plate is mounted on a base and fixed on the ground behind the melting machine trolley; a waist hole structure is arranged on the base; a butt pipe is fixed to the cylinder connecting plate, passes through the cylinder mounting plate, and is supported by a shaft sleeve installed on the cylinder mounting plate; the piston end of the cylinder drives the cylinder connecting plate to move, and drives the butt pipe to connect with the pipeline behind the melting machine trolley, thereby reducing the pipeline length and turns as a whole, and increasing the vacuum extraction efficiency and speed; the docking uses a longitudinal connection rather than a transverse connection form, which is convenient for positioning, and the waist hole structure arranged on the base is adjusted from the waist hole structure in two directions, and precise docking can be achieved by only adjusting the hard pipe to the right position.

[0020] Embodiment 3: Based on Embodiment 2, the two cylinders and the two guide devices are arranged along the axial direction of the sleeve 2803. The present invention uses two cylinders and two guide devices arranged along the axial direction of the sleeve 2803, and the model of the cylinder is CDA2B40-400Z-M9BWZ.

[0021] Embodiment 4: Based on Embodiment 3, any one of the guide devices includes a bearing seat, a guide rod 2807 is arranged in the bearing seat, and one end of the guide rod 2807 is connected to the cylinder connecting plate 2806. The present invention adopts a bearing seat fixed on the cylinder mounting plate, the model of the bearing seat is LHFC-MX20, one end of the guide rod is fixed on the cylinder connecting plate, and the other end passes through the bearing seat.

[0022] Embodiment 5: Based on Embodiment 4, the cylinder connecting plate 2806 is a cross block structure, the piston ends of the two cylinders are respectively located at the two ends of the vertical plate of the cross block structure, and the two guide rods 2807 are respectively located at the two ends of the horizontal plate of the cross block structure. The present invention adopts that the piston ends of the two cylinders are respectively located at the two ends of the vertical plate of the cross block structure, and the two guide rods are respectively located at the two ends of the horizontal plate of the cross block structure. The piston ends of the cylinders drive the cylinder connecting plate to move, and the guide rods guide and drive the butt joint to move. The butt joint can move in two directions to align the position of the butt joint on the melting machine trolley and butt with the quick connector on the vacuum tube on the trolley. The cylinder can provide moving thrust.

[0023] Embodiment 6: Based on Embodiment 5, a stopper 2804 is provided on one end face of the cylinder mounting plate 2805, the stopper 2804 is located on the outer ring of the shaft sleeve 2803, and the stopper 2804 is on the same side as the cylinder connecting plate. The present invention adopts a stopper provided on one end face of the cylinder mounting plate to limit the movement of the cylinder connecting plate.

[0024] Embodiment 7: Based on Embodiment 5, Figure 3 The outer ring of the main shaft 27 is respectively provided with an inlet water conduit 6 and an outlet water conduit 5; the outer ring of the main shaft 27 is sequentially provided with a second connecting plate 15, a first connecting plate 14, a main shaft housing 13, a first bearing cover 10, a first spacer 9, a large round nut 8, a driven pulley 7, a speed measuring gear 25, and a small round nut 24 from top to bottom; a second bearing cover 26 is provided between the upper part of the main shaft housing 13 and the main shaft 27, and an upper protective cover 1 is provided between the first connecting plate 14 and the second bearing cover 26; a first bearing, a second spacer 12, a second bearing, a spacer sleeve 11, a third bearing, and a fourth bearing are sequentially provided between the main shaft housing 13 and the main shaft 27 from top to bottom, and the first bearing cover 10 presses the fourth bearing; a lower protective cover 2 is provided on the outer ring between the large round nut 8 and the speed measuring gear 25, and the speed measuring gear 25 is installed on the speed measuring support plate 19. The present invention adopts the third bearing and the fourth bearing to install the main shaft in the main shaft housing from the lower end, adopts the first bearing and the second bearing to install the main shaft in the main shaft housing from the upper end, and the main shaft rotates in the main shaft housing.

[0025] Embodiment 8: Based on Embodiment 7, Figure 4The driven pulley 7 is connected to the driving pulley 23 through a transmission belt, the driving pulley 23 is installed on the output shaft of the reduction motor through a retaining ring 17 and a first bolt, the reduction motor is installed on the motor support 22 through a motor bracket 21, and a tensioning top plate 20 is provided on the side of the motor bracket 21 away from the main shaft 27. The tensioning top plate 20 can drive the motor bracket 21 and the reduction motor to adjust the position on the motor support 22 through a second bolt. The outer ring of the reduction motor is provided with a motor cover 18, and the motor cover 18 is installed on the motor support 22. The present invention uses the driving pulley at the output end of the reduction motor to drive the driven pulley to rotate through the transmission belt, thereby driving the main shaft to rotate.

[0026] Embodiment 9, on the basis of embodiment 7, a water pipe support plate 3 is provided on one side of the lower part of the outer ring of the spindle housing 13, and a water inlet pipe and a water outlet pipe are provided at the lower part of the water pipe support plate 3, respectively. The water inlet pipe and the water outlet pipe are both limited by the water pipe retaining ring 16, and the water inlet pipe is communicated with the water inlet water guide pipe 6, and the water outlet pipe is communicated with the water outlet water guide pipe 5. The present invention adopts a water pipe support plate to fix the water inlet pipe and the water outlet pipe, and the water inlet pipe is communicated with the water inlet water guide pipe, and the water outlet pipe is communicated with the water outlet water guide pipe to form a circulating cooling water circuit.

[0027] Embodiment 10: Based on Embodiment 7, Figure 6 After the pipeline extends to the rear of the melting machine trolley, a second joint 30 is provided. A first joint 29 is provided at one end of the butt pipe 2802. The first joint 29 is close to the cylinder mounting plate 2805. The second joint 30 is a reducer pipe joint. A water-cooling shell is provided on the outer ring of the second joint 30. The first joint 29 is located in the large end of the second joint 30. A first conical surface is provided on the first joint 29. A second conical surface is provided in the large end of the second joint 30. The first conical surface is fitted with the second conical surface; three sealing rings are provided between the large ends of the first joint 29 and the second joint 30. The first joint of the present invention adopts a sealing ring and a second joint to form an on-off structure of a plug-in quick joint. Because the sealing ring can withstand a maximum temperature of about 200°, the on-site temperature must reach 300°-500°, and the quick joint uses a water-cooled shell to protect internal components from external high temperatures. The piston end of the cylinder provides a moving thrust for sealing, which is sufficient for the first conical surface of the first joint to fit the second conical surface of the second joint. In addition, three sealing rings are used to ensure the vacuum requirement. The vacuum pipeline docking uses multi-layer sealing to ensure that the pipeline vacuum is 0.095 bar.

[0028] During the specific implementation, the melting machine trolley is in place, the piston end of the cylinder drives the hard tube (butt tube 2802) to be pushed out, the quick connector is sealed and connected, and the mold starts to be vacuumed; when the mold needs to be demolded, the piston end of the cylinder drives the hard tube (butt tube 2802) to be retracted, disconnected, vacuuming stops, and the melting machine trolley moves to the outside of the small melting chamber for demolding.

[0029] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A mold vacuuming device, comprising a main shaft (27) installed below the mold, and a melting machine trolley driving the mold to move, characterized in that: The diameter of the main shaft (27) is 120 mm. The main shaft (27) is connected to a pipeline via a reducer. The diameter of the pipeline is 100 mm. The pipeline is a fixed structure. The pipeline extends to the back of the melting machine trolley to set an on-off structure. The on-off structure is connected to the vacuum system via a docking device (28). The docking device (28) includes a docking pipe (2802) that can be connected to the vacuum system.

2. The mold vacuuming device according to claim 1, characterized in that: The docking device (28) comprises a base (2801), the base (2801) being mounted on the ground behind the melting machine trolley, a cylinder mounting plate (2805) being arranged on one end surface of the base (2801), a shaft sleeve (2803) being arranged in the middle of the cylinder mounting plate (2805), a docking tube (2802) being located in the shaft sleeve (2803), one end of the docking tube (2802) being connected to a cylinder connecting plate (2806), two cylinders arranged at intervals and two guide devices arranged at intervals being further arranged on the cylinder mounting plate (2805), a piston end of the cylinder being exposed from the cylinder mounting plate (2805), and the piston end of the cylinder being able to contact the cylinder connecting plate (2806).

3. A mold vacuuming device according to claim 2, characterized in that: The two cylinders and the two guide devices are arranged along the axial direction of the sleeve (2803).

4. The mold vacuuming device according to claim 3, characterized in that: Any one of the guide devices comprises a bearing seat, a guide rod (2807) is arranged inside the bearing seat, and one end of the guide rod (2807) is connected to the cylinder connecting plate (2806).

5. The mold vacuuming device according to claim 4, characterized in that: The cylinder connecting plate (2806) is a cross block structure, the piston ends of the two cylinders are respectively located at the two ends of the vertical plate of the cross block structure, and the two guide rods (2807) are respectively located at the two ends of the horizontal plate of the cross block structure.

6. The mold vacuuming device according to claim 5, characterized in that: A stopper (2804) is provided on one end surface of the cylinder mounting plate (2805), the stopper (2804) is located on the outer ring of the shaft sleeve (2803), and the stopper (2804) is on the same side as the cylinder connecting plate.

7. The mold vacuuming device according to claim 5, characterized in that: The outer ring of the main shaft (27) is respectively provided with a water inlet guide pipe (6) and a water outlet guide pipe (5); the outer ring of the main shaft (27) is sequentially provided with a second connecting plate (15), a first connecting plate (14), a main shaft housing (13), a first bearing cover (10), a first spacer (9), a large round nut (8), a driven pulley (7), a speed measuring gear (25), and a small round nut (24) from top to bottom; a second bearing cover (26) is provided between the upper part of the main shaft housing (13) and the main shaft (27). ), an upper protective cover (1) is arranged between the first connecting plate (14) and the second bearing cover (26); a first bearing, a second spacer (12), a second bearing, a spacer sleeve (11), a third bearing, and a fourth bearing are arranged in sequence from top to bottom between the main shaft housing (13) and the main shaft (27), and the first bearing cover (10) presses the fourth bearing; a lower protective cover (2) is arranged on the outer ring between the large round nut (8) and the speed measuring gear (25), and the speed measuring gear (25) is mounted on the speed measuring support plate (19).

8. The mold vacuuming device according to claim 7, characterized in that: The driven pulley (7) is connected to the driving pulley (23) via a transmission belt; the driving pulley (23) is mounted on the output shaft of the reduction motor via a retaining ring (17) and a first bolt; the reduction motor is mounted on the motor support (22) via a motor bracket (21); a tensioning top plate (20) is provided on the side of the motor bracket (21) away from the main shaft (27); the tensioning top plate (20) can drive the motor bracket (21) and the reduction motor to adjust their positions on the motor support (22) via a second bolt; a motor cover (18) is provided on the outer ring of the reduction motor; the motor cover (18) is mounted on the motor support (22).

9. The mold vacuuming device according to claim 7, characterized in that: A water pipe support plate (3) is provided on one side of the lower part of the outer ring of the spindle housing (13), and a water inlet pipe and a water outlet pipe are provided at the lower part of the water pipe support plate (3). The water inlet pipe and the water outlet pipe are both limited by a water pipe retaining ring (16). The water inlet pipe is communicated with the water inlet guide pipe (6), and the water outlet pipe is communicated with the water outlet guide pipe (5).

10. The mold vacuuming device according to claim 7, characterized in that: The pipeline is extended to the rear of the melting machine trolley and is provided with a second joint (30) and a first joint (29). One end of the butt pipe (2802) is provided with the first joint (29). The first joint (29) is close to the cylinder mounting plate (2805). The second joint (30) is a reducer pipe joint. The first joint (29) is located inside the large end of the second joint (30). A first conical surface is provided on the first joint (29). A second conical surface is provided inside the large end of the second joint (30). The first conical surface fits the second conical surface. Several sealing rings are provided between the large ends of the first joint (29) and the second joint (30).

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