Mould vacuumizing device
By installing a vacuum cover and vacuum pump system at the bottom of the mold forming machine, the problem of poor flue gas discharge inside the mold is solved, and the molding quality and production efficiency of the carbon block are improved.
Patent Information
- Application Number
- CN202422487818.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-10-15
AI Technical Summary
During the carbon block production process, the flue gas inside the mold cannot be effectively discharged, resulting in unstable quality of the carbon block, and there are problems such as large deformation, many surface cracks, low volume density and long vibration time of the molding machine.
A vacuum cover is installed at the bottom of the forming machine's pressure, and a vacuum pump and a vacuum negative pressure tank are equipped. A closed space is formed inside the mold through vacuum operation. The vacuum pump is used to continuously maintain the internal vacuum of the mold to ensure the discharge of flue gas during the forming of the carbon block. Multiple groups of mold pressing seats and sealing strips are used to improve stability.
Significantly improve the quality of the carbon block, reduce deformation and surface cracks, increase bulk density, shorten the vibration time of the molding machine, and reduce the pressing pressure of the pressure-heavy molding machine.
Smart Images
Figure CN223266356U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of mold vacuum pumping devices, in particular to a mold vacuum pumping device. Background Art
[0002] Moulds are various molds and tools used in industrial production to obtain the required products by methods such as injection molding, blow molding, extrusion, die casting or forging, smelting, and stamping. In short, moulds are tools used to make shaped objects. This tool is composed of various parts, and different moulds are composed of different parts. It mainly realizes the processing of the shape of the object by changing the physical state of the moulding material. Moulds are used in carbon block production.
[0003] When in use, the powdered raw materials are poured into the mold, and then the molding machine vibrates and presses it to form it into the shape of a carbon block. However, when the mold is in use, the smoke in the mixed material inside the mold enters the mold together with the mixed material. During the vibration molding process of the molding machine, a small amount of smoke cannot be discharged, which will cause the quality of the carbon block to be unstable. Previously, breathing holes were opened in the lower half of the mold for exhaust, but the effect was not ideal, which will lead to problems with the carbon block: 1. Appearance of carbon block: large deformation of carbon block (about ±5mm); many cracks on the surface of carbon block, 2. Quality: low volume density of carbon block; long vibration time of molding machine; high pressurization pressure. Utility Model Content
[0004] Based on this, the purpose of the present invention is to provide a mold vacuuming device to solve the technical problems mentioned in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mold vacuum extraction device, comprising a first vacuum pump, a vacuum negative pressure tank and a molding machine vibration table, a first motor is installed on one side of the first vacuum pump, an exhaust pipe is installed on the top of the first vacuum pump, and a connecting pipe is provided on the top of the first vacuum pump, a vacuum negative pressure tank is provided at the end of the connecting pipe, and a vacuum pipe is installed on the top of the vacuum negative pressure tank, a vacuum hose is provided at the end of the vacuum pipe, a vacuum cover is installed at the end of the vacuum hose, and a molding machine weight is installed on the top of the vacuum cover, a mold is installed on the top of the molding machine vibration table, and a mold pressing seat is provided on the outside of the vacuum cover.
[0006] By adopting the above technical solution, a vacuum cover is installed at the bottom of the molding machine weight, and a sealing strip is also installed at the bottom of the vacuum cover for sealing, so that the mold becomes a closed space when in use. In this way, after the mixed material enters the mold, the vacuum cover is buckled on the upper side of the mold, and the first vacuum pump is started to vacuum the mold. During the vibration molding process of the molding machine vibration table, the first vacuum pump continues to work to maintain the vacuum degree inside the mold (vacuum gauge -0.03MPA). After the mold is vacuumed, the quality of the carbon block is significantly improved, and the appearance of the carbon block and the deformation of the carbon block are reduced (about ±2mm); the cracks on the surface of the carbon block are significantly reduced, and the quality of the carbon block: the volume density of the carbon block is increased by 0.0124g / cm3; the vibration time of the molding machine vibration table is reduced by 10-20 seconds / block; the pressurization pressure of the weight molding machine is reduced by 0.5MPA.
[0007] The utility model is further configured such that vacuum cover positioning sleeves are fixed on both sides of the mold, and a through hole is opened inside the vacuum cover positioning sleeves, vacuum cover positioning pins are installed on both sides of the vacuum cover, and the outer wall of the vacuum cover positioning pins fits with the inner wall of the through hole, and then the clamping device of the molding machine is buckled on the mold pressing seat to press the mold.
[0008] By adopting the above technical solution, the re-molding machine drives the vacuum hood to move downward, and the vacuum hood positioning pin is inserted into the vacuum hood positioning sleeve on the outside of the mold to ensure that the vacuum hood is aligned with the center of the mold (to ensure that the vacuum hood covers the entire mold without deviation), and then the clamping device of the re-molding machine is buckled on the mold pressing seat to press the mold.
[0009] The utility model is further configured such that a vacuum device control cabinet is provided on one side of the vacuum negative pressure tank.
[0010] By adopting the above technical solution, the start and stop of the first vacuum pump and the second vacuum pump can be achieved through the provided vacuum device control cabinet.
[0011] The utility model is further configured such that the end of the connecting pipe is connected to the vacuum negative pressure tank, and a first control valve and a second control valve are provided inside the connecting pipe.
[0012] By adopting the above technical solution, the first control valve and the second control valve can be set to conveniently open and close the connecting pipe, so that the gas when the first vacuum pump and the second vacuum pump are working can enter the interior of the vacuum negative pressure tank through the connecting pipe.
[0013] The utility model is further configured such that the number of the mold pressing seats is four groups, and the four groups of the mold pressing seats are evenly distributed on the outer wall of the vacuum cover.
[0014] By adopting the above technical solution and arranging multiple groups of mold pressing seats, the vacuum cover can be more stable during operation.
[0015] The utility model is further configured such that a vacuum cover sealing strip is provided at the lower portion of the vacuum cover.
[0016] By adopting the above technical solution, the vacuum cover sealing strip can make the bottom of the vacuum cover fit with the mold when in use, thereby forming a sealed environment inside the mold, making it easier to vacuum it.
[0017] In summary, the present invention has the following beneficial effects:
[0018] The utility model is provided with a first vacuum pump, a vacuum negative pressure tank, a vacuum hose, a vacuum cover, a vacuum cover sealing strip and a mold. The vacuum cover is installed at the bottom of the molding machine weight, and a sealing strip is also installed at the bottom of the vacuum cover for sealing, so that the mold becomes a closed space when in use. In this way, after the mixed material enters the mold, the vacuum cover is buckled on the upper side of the mold, and the first vacuum pump is started to vacuum the mold. During the vibration molding process of the molding machine vibration table, the first vacuum pump continues to work to maintain the vacuum degree inside the mold (vacuum gauge -0.03MPA). After the mold is vacuumed, the quality of the carbon block is significantly improved, and the appearance of the carbon block and the deformation of the carbon block are reduced (about ±2mm); the cracks on the surface of the carbon block are significantly reduced, and the quality of the carbon block: the volume density of the carbon block is increased by 0.0124g / cm3; the vibration time of the molding machine vibration table is reduced by 10-20 seconds / block; and the pressurization pressure of the weight molding machine is reduced by 0.5MPA. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a structural diagram of the utility model;
[0020] Figure 2 It is a top view of the utility model;
[0021] Figure 3 This is a working schematic diagram of the vacuum cover of the present utility model.
[0022] In the figure: 1. First motor; 2. First vacuum pump; 3. Second motor; 4. Second vacuum pump; 5. Vacuum negative pressure tank; 6. Vacuum pipe; 7. Vacuum hose; 8. Vacuum cover; 9. Mold; 10. Mold pressing base; 11. Vacuum cover positioning pin; 12. Pressure forming machine; 13. First control valve; 14. Second control valve; 15. Exhaust pipe; 16. Vacuum device control cabinet; 17. Vacuum cover sealing strip; 18. Forming machine vibration table; 19. Vacuum cover positioning sleeve; 20. Connecting pipe. DETAILED DESCRIPTION
[0023] 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. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0024] The following describes an embodiment of the present invention based on its overall structure.
[0025] Mould vacuum device, such as Figure 1-Figure 3 As shown, it includes a first vacuum pump 2, a second vacuum pump 4, a vacuum negative pressure tank 5 and a molding machine vibration table 18. A first motor 1 is installed on one side of the first vacuum pump 2, an exhaust pipe 15 is installed on the top of the first vacuum pump 2, and a connecting pipe 20 is provided on the top of the first vacuum pump 2. The end of the connecting pipe 20 is provided with a vacuum negative pressure tank 5, and the top of the vacuum negative pressure tank 5 is installed with a vacuum pipe 6. The end of the vacuum pipe 6 is provided with a vacuum hose 7, and the end of the vacuum hose 7 is provided with a vacuum cover 8. The working of the pressure molding machine 12 drives the vacuum The empty cover 8 moves downward, and the vacuum cover positioning pin 11 is inserted into the vacuum cover positioning sleeve 19 outside the mold 9 to ensure that the vacuum cover 8 is aligned with the center of the mold 9. A pressure forming machine 12 is installed on the top of the vacuum cover 8, and the mold 9 is installed on the top of the molding machine vibration table 18. A mold pressing seat 10 is provided on the outside of the vacuum cover 8. The vacuum device is controlled by the vacuum device control cabinet 16. The first vacuum pump 1 works and the first control valve 13 is opened to vacuum the mold 9. The first vacuum pump 1 and the second vacuum pump 3 are used one by one. The pressure of the vacuum negative pressure tank 15 is between -0.07 and 0.09 MPa. When the pressure is -0.07 MPa, the first vacuum pump 1 is turned on; when the pressure is -0.09 MPa, the first vacuum pump 1 is turned off. During the vibration molding process of the molding machine vibration table 18, the first vacuum pump 1 continues to work to maintain the vacuum degree inside the mold 9 (vacuum gauge -0.03 MPa). A second vacuum pump 4 is provided on one side of the first vacuum pump 2, and a second motor 3 is installed on one side of the second vacuum pump 4. The top of the second vacuum pump 4 is provided with a second motor 3. A connecting pipe 20 is installed, and a second control valve 14 is provided in the middle of the connecting pipe 20, and the connecting pipe 20 at the top of the second vacuum pump 4 is connected to the connecting pipe 20 at the top of the first vacuum pump 2, and an exhaust pipe 15 is also installed on the top of the second vacuum pump 4, and the exhaust pipe 15 at the top of the second vacuum pump 4 is connected to the exhaust pipe 15 at the top of the first vacuum pump 2. The second vacuum pump 4 is used for backup. When the first vacuum pump 2 is damaged, the second vacuum pump 4 works, avoiding the problem of the equipment needing to stop for maintenance.
[0026] See also Figure 1 and Figure 3, vacuum cover positioning sleeves 19 are fixed on both sides of the mold 9, and a through hole is opened inside the vacuum cover positioning sleeves 19, vacuum cover positioning pins 11 are installed on both sides of the vacuum cover 8, and the outer wall of the vacuum cover positioning pin 11 fits with the inner wall of the through hole, and the heavy molding machine 12 drives the vacuum cover 8 to move downward, and the vacuum cover positioning pin 11 is inserted into the vacuum cover positioning sleeve 19 outside the mold 9 to ensure that the vacuum cover 8 is aligned with the center of the mold 9 (to ensure that the vacuum cover covers the entire mold 9 without deviation), and then the clamping device 22 of the molding machine 18 is buckled on the mold pressing seat 10 to press the mold 9.
[0027] See also Figure 1 and Figure 3 A vacuum device control cabinet 16 is provided on one side of the vacuum negative pressure tank 5 , and the vacuum device control cabinet 16 can be used to start and stop the first vacuum pump 2 and the second vacuum pump 4 .
[0028] See also Figure 1 and Figure 2 The end of the connecting pipe 20 is connected to the vacuum negative pressure tank 5, and the first control valve 13 and the second control valve 14 are provided inside the connecting pipe 20. The first control valve 13 and the second control valve 14 can be used to conveniently open and close the connecting pipe 20, so that the gas when the first vacuum pump 2 and the second vacuum pump 4 are working can enter the interior of the vacuum negative pressure tank 5 through the connecting pipe 20.
[0029] See also Figure 2 There are four groups of mold pressing seats 10, and the four groups of mold pressing seats 10 are evenly distributed on the outer wall of the vacuum cover 8. The mold pressing seats 10 and the vacuum cover 8 are integrally formed. By setting up multiple groups of mold pressing seats 10, the vacuum cover 8 can be more stable during operation.
[0030] See also Figure 2 A vacuum hood sealing strip 17 is provided at the lower part of the vacuum hood 8. The vacuum hood sealing strip 17 can make the bottom of the vacuum hood 8 fit with the mold 9 when in use, thereby forming a sealed environment inside the mold 9, making it convenient to perform vacuuming work on it.
[0031] The working principle of the utility model is as follows: when in use, the material distributing vehicle injects the mixed material into the mold 9, and then the pressure forming machine 12 works to drive the vacuum cover 8 to move downward, and the vacuum cover positioning pin 11 is inserted into the vacuum cover positioning sleeve 19 outside the mold 9 to ensure that the vacuum cover 8 is aligned with the center of the mold 9 (to ensure that the vacuum cover covers the entire mold and does not deviate), and then the pressing device 22 of the forming machine 18 is buckled on the mold pressing base 10 to press the mold 9 (the mold pressing base 10 and the vacuum cover 8 are an integral whole, to ensure that the vacuum cover does not deviate during the vibration forming of the carbon block), so that the vacuum cover 8 is buckled above the mold 9;
[0032] Then the vacuum device starts to work. The vacuum device is controlled by the vacuum device control cabinet 16. The first vacuum pump 1 works, the first control valve 13 is opened, and the mold 9 is vacuumed. The first vacuum pump 1 and the second vacuum pump 3 are used in one and the other is on standby. The pressure of the vacuum negative pressure tank 15 is between -0.07 and 0.09 MPa. When the pressure is -0.07 MPa, the first vacuum pump 1 is turned on; when the pressure is -0.09 MPa, the first vacuum pump 1 is turned off. During the vibration molding process of the molding machine vibration table 18, the first vacuum pump 1 continues to work to maintain the vacuum degree inside the mold 9 (vacuum gauge -0.03 MPa).
[0033] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.
Claims
1. A mold vacuuming device, comprising a first vacuum pump (2), a vacuum negative pressure tank (5) and a molding machine vibration table (18), characterized in that: A first motor (1) is installed on one side of the first vacuum pump (2), an exhaust pipe (15) is installed on the top of the first vacuum pump (2), and a connecting pipe (20) is provided on the top of the first vacuum pump (2), a vacuum negative pressure tank (5) is provided at the end of the connecting pipe (20), and a vacuum pipe (6) is installed on the top of the vacuum negative pressure tank (5), a vacuum hose (7) is provided at the end of the vacuum pipe (6), a vacuum cover (8) is installed at the end of the vacuum hose (7), and a molding machine weight (12) is installed on the top of the vacuum cover (8), a mold (9) is installed on the top of the molding machine vibration table (18), and a mold pressing die seat (10) is provided outside the vacuum cover (8).
2. The mold vacuuming device according to claim 1, characterized in that: Vacuum cover positioning sleeves (19) are fixed on both sides of the mold (9), and a through hole is opened inside the vacuum cover positioning sleeves (19). Vacuum cover positioning pins (11) are installed on both sides of the vacuum cover (8), and the outer wall of the vacuum cover positioning pin (11) is in contact with the inner wall of the through hole.
3. The mold vacuuming device according to claim 1, characterized in that: A vacuum device control cabinet (16) is provided on one side of the vacuum negative pressure tank (5).
4. The mold vacuuming device according to claim 1, characterized in that: The end of the connecting pipe (20) is connected to the vacuum negative pressure tank (5), and a first control valve (13) is provided inside the connecting pipe (20).
5. The mold vacuuming device according to claim 1, characterized in that: The number of the mold pressing seats (10) is four groups, and the four groups of the mold pressing seats (10) are evenly distributed on the outer wall of the vacuum cover (8).
6. The mold vacuuming device according to claim 1, characterized in that: A vacuum cover sealing strip (17) is provided at the lower portion of the vacuum cover (8).
7. The mold vacuuming device according to claim 4, characterized in that: A second vacuum pump (4) is provided on one side of the first vacuum pump (2), and a second motor (3) is installed on one side of the second vacuum pump (4).
8. The mold vacuuming device according to claim 7, characterized in that: A connecting pipe (20) is installed on the top of the second vacuum pump (4), and a second control valve (14) is provided in the middle of the connecting pipe (20), and the connecting pipe (20) on the top of the second vacuum pump (4) is connected to the connecting pipe (20) on the top of the first vacuum pump (2). An exhaust pipe (15) is also installed on the top of the second vacuum pump (4), and the exhaust pipe (15) on the top of the second vacuum pump (4) is connected to the exhaust pipe (15) on the top of the first vacuum pump (2).