阅读说明：本技术 一种真空冷压铸用保温自动定量送料系统 (Vacuum cold-pressing casting is with automatic ration feeding system that keeps warm ) 是由 车飞 于 2021-08-12 设计创作，主要内容包括：发明属于压铸领域,为一种真空冷压铸用保温自动定量送料系统,一种真空冷压铸用保温自动定量送料系统,一种真空冷压铸用保温自动定量送料系统,包括固定设置在地面上的加热保温罐,所述加热保温罐腔内侧中部固定设置有导流板,所述导流板将所述加热保温罐内腔分割为上下两个腔体。本发明在卧式冷室压铸模具生产过程中,对压铸系统进行抽真空,对所使用的固体金属材料进行熔化过滤并保温储存,对压铸过程所使用的金属液进行自动定量送料,解决了传统送料方式不利于抽真空,送料效率底,送料材料存在杂质,温度和送料量不稳定,照成产品缺陷浪费材料等问题。(The invention belongs to the field of die casting, and relates to an automatic heat-preservation quantitative feeding system for vacuum cold-pressing casting, which comprises a heating heat-preservation tank fixedly arranged on the ground, wherein a guide plate is fixedly arranged in the middle of the inner side of a cavity of the heating heat-preservation tank, and the guide plate divides the inner cavity of the heating heat-preservation tank into an upper cavity and a lower cavity. In the production process of the horizontal cold chamber die-casting die, the die-casting system is vacuumized, the used solid metal material is melted, filtered, insulated and stored, and the molten metal used in the die-casting process is automatically and quantitatively fed, so that the problems that the traditional feeding mode is not favorable for vacuumization, the feeding efficiency is low, the feeding material has impurities, the temperature and the feeding amount are unstable, the defect of the finished product is caused, the material is wasted, and the like are solved.)

1. The utility model provides a vacuum is cold pressed and is cast with automatic ration feeding system that keeps warm, includes fixed heating heat preservation jar (10) that sets up subaerial, heating heat preservation jar (10) intracavity side middle part is fixed and is provided with guide plate (11), guide plate (11) will heating heat preservation jar (10) inner chamber is cut apart into two upper and lower cavitys, heating heat preservation jar (10) epicoele is vortex heating chamber (69), vortex heating chamber (69) lateral wall inboard is fixed and is equipped with vortex heater (66) for the heating melts solid metal material, heating heat preservation jar (10) cavity of resorption is storage heat preservation chamber (70), storage heat preservation chamber (70) lateral wall inboard is fixed and is equipped with resistance heating wire (68) for the heating of metal liquid, be equipped with vacuum heat preservation chamber (67) in heating heat preservation jar (10) lateral wall for the heat preservation of metal liquid, heating heat preservation jar (10) top upside is fixed and is equipped with charge door (17), the feeding port (17) is connected with an external feeding device for feeding, the upper side of the top of the heating and heat-preserving tank (10) is provided with an adjusting device, the adjusting device comprises a gear motor fixing seat (13) fixedly arranged on the upper side of the top of the heating and heat-preserving tank (10), a gear motor (14) is fixedly arranged on the gear motor fixing seat (13), the output end of the gear motor (14) is provided with a gear shaft (15), a gear (16) is fixedly arranged on the gear shaft (15), the adjusting device is rotatably provided with an adjusting gear shaft (19), an adjusting gear (18) is fixedly arranged at the top end of the adjusting gear shaft (19), an adjusting spring seat (20) is fixedly arranged on the outer wall of the joint of the adjusting gear shaft (19) and the adjusting gear (18), a groove is arranged on the lower side of the adjusting spring seat (20), and an adjusting spring (21) is connected between the groove and the upper side wall of the heating and heat-preserving tank (10), the adjusting gear (18) is meshed with the gear (16) and is used for adjusting the up-and-down movement of the adjusting gear shaft (19).

2. The automatic quantitative feeding system for the heat preservation for the vacuum cold-pressing casting as claimed in claim 1, is characterized in that: the utility model discloses a material storage device, including adjusting gear shaft (19), adjusting gear shaft (19) lower extreme middle part is fixed and is equipped with X type vortex heating filter screen (12), adjusting gear shaft (19) lower extreme with guide plate (11) sliding fit, vortex heating chamber (69) with storage heat preservation chamber (70) middle part junction is equipped with feeding sealing device, feeding sealing device includes annular position flow sensor (22) of adjusting gear shaft (19) lower extreme upside fixed setting, both ends are equipped with feed inlet (23) about annular position flow sensor (22) downside, the inside feedstock channel (24) that sets up of adjusting gear shaft (19) lower extreme, discharge gate (25) that both sides set up about feedstock channel (24) lower extreme, adjusting gear shaft (19) lower extreme top is equipped with vacuum seal valve (27), and a sealing spring (26) is arranged at the upper end of the vacuum sealing valve (27), the sealing spring (26) is used for ensuring the sealing effect of the vacuum sealing valve (27), and the feeding sealing device is used for controlling the feeding of molten metal and the vacuum sealing of the die casting system.

3. The automatic quantitative feeding system for the heat preservation for the vacuum cold-pressing casting as claimed in claim 2, is characterized in that: a feeding guide pipe (29) is fixedly arranged on the right side of the bottom of the heating and heat-preserving tank (10), a feeding flow meter (28) is fixedly arranged on the feeding guide pipe (29) and used for measuring the volume of molten metal flowing through the feeding guide pipe (29), a first electromagnetic one-way valve (30) is fixedly arranged in the feeding guide pipe (29), a valve core (31) is arranged inside the first electromagnetic one-way valve (30), a first electromagnet (32) is arranged on the upper side outside the first electromagnetic one-way valve (30), a second electromagnet (33) is arranged on the upper side outside the first electromagnetic one-way valve (30), the first electromagnet (32) is used for controlling the valve core (31) to move upwards and rightwards so as to control the first electromagnetic one-way valve (30) to be opened, and the second electromagnet is used for controlling the valve core (31) to return to the initial position so as to control the first electromagnetic one-way valve (30) to be closed, thereby controlling the flow of the molten metal.

4. The automatic quantitative feeding system for the heat preservation for the vacuum cold-pressing casting as claimed in claim 3, is characterized in that: the quantitative feeding device is connected with the other end of the feeding guide pipe (29) and comprises a quantitative feeding storage tank (34) fixed on the ground, a hydraulic device fixing plate (36) is fixedly arranged on the upper side of the outside of the quantitative feeding storage tank (34), a hydraulic device carriage (38) is fixedly arranged on the upper side of the hydraulic device fixing plate (36), a quantitative feeding hydraulic cylinder (39) is fixedly arranged on the upper side of the hydraulic device carriage (38), a hydraulic cylinder upper inlet and outlet (40) is fixedly arranged on the upper right wall of the quantitative feeding hydraulic cylinder (39), a hydraulic cylinder lower inlet and outlet (42) is fixedly arranged on the lower right wall of the quantitative feeding hydraulic cylinder (39), a hydraulic push plate (41) is arranged in the quantitative feeding hydraulic cylinder (39) in a sliding mode, a hydraulic rod (37) is fixedly arranged on the hydraulic push plate (41), and the lower end of the hydraulic rod (37) extends into the quantitative feeding storage tank (34), the fixed flow pushing plate (35) that is equipped with of hydraulic stem (37) lower extreme, flow pushing plate (35) with the inside sliding connection of ration pay-off storage tank (34), pneumatic cylinder upper entry export (40) with exit (42) connect the peripheral hardware respectively under the pneumatic cylinder, ration pay-off storage tank (34) lower extreme opposite side is fixed and is equipped with pay-off honeycomb duct (44), pay-off honeycomb duct (44) are close to the fixed pay-off flowmeter (43) that is equipped with in ration pay-off storage tank (34) one side, pay-off honeycomb duct (44) are kept away from ration pay-off storage tank (34) one side is fixed and is equipped with second electromagnetism check valve (45).

5. The automatic quantitative feeding system for the heat preservation for the vacuum cold-pressing casting as claimed in claim 4, is characterized in that: the other side of the feeding guide pipe (44) is connected with an injection device of the die casting system, the injection device comprises a die base (51) arranged on an external supporting device, an injection hydraulic cylinder (46) is fixedly arranged on the die base (51), an injection push rod (47) is arranged at the output end of the injection hydraulic cylinder (46), an injection punch head (48) is fixedly arranged at the other end of the injection push rod (47), a fixed die fixing plate (52) is fixedly arranged on the die base (51), an injection guide pipe (50) is fixedly arranged on the fixed die fixing plate (52), an injection cavity (49) is arranged inside the injection guide pipe (50), the injection punch head (48) extends into the injection cavity (49), the lower end of the injection cavity (49) is connected with the inner cavity of the feeding guide pipe (44), and the right end of the injection cavity (49) is connected with a die opening and closing device of the die casting system.

6. The automatic heat-preservation quantitative feeding system for the vacuum cold-pressing casting as claimed in claim 5, is characterized in that: the die opening and closing device comprises a fixed die fixing plate (52) fixedly arranged on a fixed die (51), a fixed die plate (53) is fixedly arranged on the left side of the fixed die fixing plate (52), the lower side of the fixed die plate (53) is connected with the top end of an injection guide pipe (50), a female die profile is arranged on the left side of the fixed die plate (53), a pouring gate (55) is arranged on the left lower side of the fixed die plate (53), a fixed die base fixing plate (60) is arranged on the die base (51) in a sliding manner, a movable die base (58) is fixedly arranged on the right side of the fixed die base fixing plate (60), a movable die base (57) is fixedly arranged on the right side of the movable die base (58), a male die profile is fixedly arranged on the right side of the movable die plate (57), the right side of the movable die plate (57) is matched with the left side of the fixed die plate (53) to form a die casting cavity (54), the die casting cavity (54) is used for forming die casting products, and a crank connecting rod fixing plate (63) is fixedly arranged on the left side of the die base (51), the die-casting mechanism is characterized in that a hydraulic cylinder fixing plate (64) is fixedly arranged at the left end of the crank connecting rod fixing plate (63), an opening and closing die hydraulic cylinder (65) is fixedly arranged between the hydraulic cylinder fixing plates (64), a crank connecting rod mechanism (62) is arranged on the right side of the crank connecting rod fixing plate (63), and the crank connecting rod mechanism (62) is in sliding connection with the fixed die base fixing plate (60) to drive the die-casting system to open and close the die.

7. The automatic quantitative feeding system for the heat preservation for the vacuum cold-pressing casting as claimed in claim 6, is characterized in that: the die casting device is characterized in that a vacuumizing device is arranged on the upper side of the die joint surface of the movable die plate (57) and the fixed die plate (53), the vacuumizing device comprises a vacuum valve (56) arranged on the upper side of the die joint surface of the fixed die plate (53) and the movable die plate (57), a vacuum pumping hole is formed in the upper side of the die joint surface, a vacuum pipeline (59) is fixedly arranged on the upper side of the vacuum valve (56), the vacuum pipeline (59) is connected with a vacuumizing pump (61), the vacuum valve (56) is communicated with the vacuum pumping hole, and a die casting system is vacuumized after die assembly.

Technical Field

The invention belongs to the field of die casting, and particularly relates to a heat-preservation automatic quantitative feeding system for vacuum cold-pressing casting.

Background

At present, high melting point metal such as cold chamber die casting machine die-casting aluminium steel, die casting machine and furnace body separation, the pay-off mouth is emptyd the metal liquid by the manual work or gives hot water with giving hot water machine machinery, pay-off inefficiency, unable accurate ration pay-off, cause the waste of die casting defect and die-casting material, and the metal hot water liquid is because the temperature is high, density is big, therefore the metal liquid directly contacts with the air and produces metal oxide and residue, the tradition is given hot water square formula and is taken away residue and oxide and metal hot water liquid mixture together, lead to die casting compactness poor, the gas pocket appears, defects such as sand hole, because die casting machine and furnace body separation, pay-off at every turn all can lead to the metal liquid temperature change, make die casting shaping effect relatively poor, can't guarantee accurately die casting production requirement.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and provides a heat-preservation automatic quantitative feeding system for vacuum cold-pressing casting.

The purpose of the invention can be realized by the following technical scheme: an automatic heat-preservation quantitative feeding system for vacuum cold-pressing casting comprises a heating and heat-preservation tank fixedly arranged on the ground, wherein a guide plate is fixedly arranged in the middle of the inner side of a cavity of the heating and heat-preservation tank and divides the inner cavity of the heating and heat-preservation tank into an upper cavity and a lower cavity, an upper cavity of the heating and heat-preservation tank is a vortex heating cavity, a vortex heater is fixedly arranged on the inner side of the side wall of the vortex heating cavity and is used for heating and melting solid metal materials, a lower cavity of the heating and heat-preservation tank is a storage heat-preservation cavity, a resistance heating wire is fixedly arranged on the inner side of the side wall of the storage heat-preservation cavity and is used for heating metal liquid, a vacuum heat-preservation cavity is arranged in the side wall of the heating and heat-preservation tank and is used for preserving heat of the metal liquid, a feeding opening is fixedly arranged on the upper side of the top of the heating and heat-preservation tank and is connected with an external feeding device for feeding, and an adjusting device is arranged on the upper side of the top of the heating and heat-preservation tank, adjusting device is including fixed setting the gear motor fixing base of heating heat preservation tank top upside, the fixed gear motor that is equipped with on the gear motor fixing base, the gear motor output is equipped with the gear shaft, the fixed gear that is equipped with on the gear shaft, adjusting device rotates and is equipped with the adjusting gear axle, the fixed adjusting gear that is equipped with in adjusting gear axle top, the adjusting gear axle with the fixed adjustment spring holder that is equipped with on the adjusting gear junction outer wall, adjustment spring holder downside is equipped with the recess, the recess with be connected with the adjustment spring between the lateral wall on the heating heat preservation tank, the adjusting gear with the gear meshes mutually, is used for adjusting reciprocating of adjusting gear axle.

Preferably, the lower end of the adjusting gear shaft extends into the eddy heating cavity, an X-shaped eddy heating filter screen is fixedly arranged in the middle of the lower end of the adjusting gear shaft, the lower end of the adjusting gear shaft is in sliding fit with the guide plate, a feeding sealing device is arranged at the joint of the vortex heating cavity and the middle part of the material storage heat preservation cavity, the feeding sealing device comprises an annular position flow sensor fixedly arranged on the upper side of the lower end of the adjusting gear shaft, the left end and the right end of the lower side of the annular position flow sensor are provided with feed inlets, a feed channel is arranged in the lower end of the adjusting gear shaft, the discharge ports are arranged on the left side and the right side of the lower end of the feeding channel, the vacuum sealing valve is arranged at the top of the lower end of the adjusting gear shaft, and the upper end of the vacuum sealing valve is provided with a sealing spring, the sealing spring is used for ensuring the sealing effect of the vacuum sealing valve, and the feeding sealing device is used for controlling the feeding of molten metal and the vacuum sealing of a die-casting system.

Preferably, the fixed feeding honeycomb duct that is equipped with in heating insulation can bottom right side, the fixed feeding flowmeter that is equipped with on the feeding honeycomb duct for the measuring flows through the metal liquid volume of feeding honeycomb duct, the fixed first electromagnetism check valve that is equipped with in feeding honeycomb duct, the inside case that is equipped with of first electromagnetism check valve, the outside upside of first electromagnetism check valve is equipped with first electro-magnet, the outside upside of first electromagnetism check valve is equipped with the second electro-magnet, first electro-magnet is used for controlling the case and moves up right to control first electromagnetism check valve and open, the second electro-magnet is used for controlling the case and gets back to initial position, thereby controls first electromagnetism check valve closure, and then controls the circulation condition of metal liquid.

Preferably, the other end of the feeding guide pipe is connected with a quantitative feeding device, the quantitative feeding device comprises a quantitative feeding storage tank fixed on the ground, a hydraulic device fixing plate is fixedly arranged on the upper side outside the quantitative feeding storage tank, a hydraulic device dragging plate is fixedly arranged on the upper side of the hydraulic device fixing plate, a quantitative feeding hydraulic cylinder is fixedly arranged on the upper side of the hydraulic device dragging plate, an upper hydraulic cylinder inlet and outlet is fixedly arranged on the upper right wall of the quantitative feeding hydraulic cylinder, a lower hydraulic cylinder inlet and outlet is fixedly arranged on the lower right wall of the quantitative feeding hydraulic cylinder, a hydraulic push plate is slidably arranged inside the quantitative feeding hydraulic cylinder, a hydraulic rod is fixedly arranged on the hydraulic push plate, the lower end of the hydraulic rod extends into the quantitative feeding storage tank, a push plate is fixedly arranged at the lower end of the hydraulic rod, and is slidably connected with the inside of the quantitative feeding storage tank, the pneumatic cylinder go up export with exit respectively connects external equipment under the pneumatic cylinder, the fixed pay-off honeycomb duct that is equipped with of ration pay-off storage tank lower extreme opposite side, the pay-off honeycomb duct is close to the fixed pay-off flowmeter that is equipped with in ration pay-off storage tank one side, the pay-off honeycomb duct is kept away from ration pay-off storage tank one side is fixed and is equipped with the second electromagnetism check valve.

Preferably, the other side of the feeding guide pipe is connected with an injection device of the die-casting system, the injection device comprises a die base arranged on an external supporting device, an injection hydraulic cylinder is fixedly arranged on the die base, an injection push rod is arranged at the output end of the injection hydraulic cylinder, an injection punch is fixedly arranged at the other end of the injection push rod, a fixed die fixing plate is fixedly arranged on the die base, an injection guide pipe is fixedly arranged on the fixed die fixing plate, an injection cavity is arranged in the injection guide pipe, the injection punch extends into the injection cavity, the lower end of the injection cavity is connected with the inner cavity of the feeding guide pipe, and the right end of the injection cavity is connected with a die opening and closing device of the die-casting system.

Preferably, the mold opening and closing device comprises an upper fixed mold fixing plate, a fixed mold plate is fixedly arranged on the left side of the fixed mold fixing plate, the lower side of the fixed mold plate is connected with the top end of the injection guide pipe, a female mold surface is arranged on the left side of the fixed mold plate, a pouring gate is arranged on the left lower side of the fixed mold plate, a fixed mold base fixing plate is arranged on the mold base in a sliding manner, a movable mold base is fixedly arranged on the right side of the fixed mold base fixing plate, a movable mold plate is fixedly arranged on the right side of the movable mold base, a male mold surface is fixedly arranged on the right side of the movable mold plate, the right side of the movable mold plate is matched with the left side of the fixed mold plate to form a molding cavity, the molding cavity is used for molding die-casting products, a crank connecting rod fixing plate is fixedly arranged on the left side of the mold base, a hydraulic cylinder fixing plate is fixedly arranged on the left side of the crank connecting rod fixing plate, and a mold opening and closing hydraulic cylinder is fixedly arranged between the hydraulic cylinder fixing plates, and a crank connecting rod mechanism is arranged on the right side of the crank connecting rod fixing plate and is in sliding connection with the fixed die holder fixing plate to drive the die casting system to open and close the die.

Preferably, the movable die plate and the upper side of the die joint surface of the fixed die plate are provided with a vacuumizing device, the vacuumizing device comprises a vacuum valve arranged on the upper side of the die joint surface of the fixed die plate and the movable die plate, the upper side of the die joint surface is provided with a vacuum pumping hole, a vacuum pipeline is fixedly arranged on the upper side of the vacuum valve, the vacuum pipeline is connected with a vacuumizing pump, the vacuum valve is communicated with the vacuum pumping hole, and the die casting system is vacuumized after die assembly.

Before the die casting process of the die starts, solid metal materials to be heated and melted are added into the eddy current heating cavity through a feed inlet by external feeding equipment, the solid metal materials fall on the X-shaped eddy current heating filter screen and are melted into metal liquid under the heating action of the eddy current heater, the metal liquid is collected at the bottom of the eddy current heating cavity after being filtered by the X-shaped eddy current heating filter screen and guided by the guide plate, at the moment, the feeding sealing device is in a sealing state, the die casting process of the die starts, the die opening and closing device is started, the crank connecting rod mechanism starts to extend rightwards under the action of the die opening and closing hydraulic cylinder so as to drive the fixed die holder fixed plate to slide rightwards, the fixed die holder fixed plate drives the movable die holder to move rightwards, the movable die holder drives the movable die plate to move rightwards until the die is completely closed, after the die is completely closed, the first electromagnetic one-way valve and the second electromagnetic one-way valve are opened, and the vacuumizing device is started, the vacuumizing pump is connected with the vacuum pumping hole through a vacuum pipeline and a vacuum valve to pump air in the whole die-casting system, when the air pressure in the die-casting system is lower than a set value, the vacuumizing device is closed, the first electromagnetic one-way valve and the second electromagnetic one-way valve are closed, the adjusting device is started, the gear motor is started to drive the gear shaft to rotate, the gear shaft drives the gear to rotate, the gear is meshed with the adjusting gear, the adjusting gear rotates to drive the adjusting gear shaft to rotate and move downwards, the discharge port and the vacuum sealing valve arranged at the lower end of the adjusting gear shaft move downwards, the discharge port moves into the material storage heat insulation cavity, the material feeding sealing device is switched to a material feeding state, the gear motor is closed, the molten metal at the bottom of the vortex heating cavity flows into the material storage heat insulation cavity through a channel feeding channel between the feed port and the discharge port, and the sensor annular position flow sensor sends a signal before the molten metal in the vortex heating cavity is lower than the feed port or when the molten metal flows through a set volume, and the gear motor is restarted, the adjusting gear shaft moves upwards, the vacuum sealing valve returns to the initial position, and the feeding sealing device is switched to the sealing state.

After the metal solution in the storage heat-preservation cavity reaches a set volume, the first electromagnetic one-way valve is opened, the valve core moves up and left under the action of the first electromagnet, the feeding guide pipe is connected, the metal solution flows into the inner cavity of the quantitative feeding storage tank through the feeding guide pipe, after the metal solution flowing into the inner cavity of the quantitative feeding storage tank reaches the volume set by the feeding flowmeter, the first electromagnetic one-way valve is closed, the second electromagnetic one-way valve is opened, the quantitative feeding device is started, the quantitative feeding hydraulic cylinder is started, liquid is discharged from the lower inlet and outlet of the liquid inlet hydraulic cylinder through the upper outlet of the hydraulic cylinder of the external connection equipment, the hydraulic push plate is driven to move downwards, the hydraulic rod is driven to move downwards, the hydraulic push plate is driven to move downwards, the metal solution enters the feeding guide pipe, the metal solution flowing through the feeding guide pipe enters the injection cavity, and when the volume of the metal solution flowing through the feeding flowmeter reaches the set volume, the second electromagnetic one-way valve is closed, the injection device is started, the injection hydraulic cylinder drives the injection push rod to move leftwards, the injection push rod drives the injection punch head to move leftwards, the injection punch head pushes molten metal in the injection cavity to enter the cavity through the pouring gate, the die-casting product forming is completed after pressure maintaining, the injection hydraulic cylinder drives the injection punch head to return to the initial position, the die opening and closing device is started, the die-casting system is opened, the die-casting product piece is taken out, the die is closed, the vacuumizing device is started, after the vacuumizing is completed, the second electromagnetic one-way valve is opened, the quantitative feeding device is started, the quantitative feeding device is used for feeding materials, the injection device is started, the pressure maintaining is used for completing the die-casting product forming, and the die is opened and closed. The obvious follow-up vacuumizing only needs to pump out air in the injection and die opening and closing device, the steps are repeated, when the volume of the molten metal flowing through the feeding flowmeter reaches a maximum set value, the first electromagnetic one-way valve is closed, the feeding sealing device is started to automatically feed, when the volume of the molten metal flowing through the feeding flowmeter reaches the set maximum value, the first electromagnetic one-way valve is opened, the second electromagnetic one-way valve is closed, the flow pushing plate returns to an initial position, and the feeding step is repeated to finish feeding. And circulating the steps to realize the automatic quantitative feeding of the die casting system.

Compared with the prior art, the heat-preservation automatic quantitative feeding system for vacuum cooling die casting has the following advantages:

1. when the die-casting process begins, the die-casting system is vacuumized, and the die-casting metal liquid is kept from contacting with air in the whole die-casting forming process, so that the phenomenon that the forming quality of die-casting parts is influenced due to oxide impurities generated by contact of the metal liquid and the air is avoided.

2, X type vortex filter screen melts solid metal material fast and filters unnecessary impurity, and heating and heat preservation are stored and are kept apart, have guaranteed the purity and the temperature stability of die-casting metal liquid, have further promoted the die casting shaping quality.

3. The automatic ration pay-off of metal liquid has reduced the input of cost of labor during die-casting, has promoted the pay-off efficiency of die-casting process, and then has promoted die-casting production efficiency, and automatic ration pay-off has improved the utilization ratio of metal liquid simultaneously, has reduced the waste of die-casting material, has practiced thrift manufacturing cost.

Drawings

FIG. 1 is an external structural schematic view of a heat-insulating automatic quantitative feeding system for vacuum cold-pressing casting

FIG. 2 is a schematic view of the internal structure of the heat-insulating automatic quantitative feeding system for vacuum cold-pressing casting.

Fig. 3 is a partial sectional view taken in the direction of a-a in fig. 1.

Fig. 4 is a partially enlarged view of fig. 2 at B.

Fig. 5 is a partially enlarged view of fig. 2 at C.

Fig. 6 is a partially enlarged view of fig. 2 at D.

FIG. 7 is a partial enlarged view of FIG. 1 at E

In the figure, 10, a heating and heat-preserving tank; 11. a baffle; 12. an X-shaped eddy heating filter screen; 13. a gear motor fixing seat; 14. a gear motor; 15. a gear shaft; 16. a gear; 17. a feed inlet; 18. an adjusting gear; 19. adjusting a gear shaft; 20. adjusting the spring seat; 21. adjusting the spring; 22. an annular position flow sensor; 23. a feed inlet; 24. a feed channel; 25. a discharge port; 26. a seal spring; 27. a vacuum seal valve; 28. a feed flow meter; 29. a feeding guide pipe; 30. a first electromagnetic check valve; 31. a valve core; 32. a first electromagnet; 33. a second electromagnet; 34. a quantitative feeding and storing tank; 35. a thrust plate; 36. a hydraulic device fixing plate; 37. a hydraulic lever; 38. a hydraulic device carriage; 39. a quantitative feeding hydraulic cylinder; 40. an upper inlet and an outlet of the hydraulic cylinder; 41. hydraulic push plate; 42. a lower inlet and a lower outlet of the hydraulic cylinder; 43. a feed flow meter; 44. a feeding guide pipe; 45. a second electromagnetic check valve; 46. an injection hydraulic cylinder; 47. injecting a push rod; 48. injecting a punch; 49. an injection cavity; 50. injecting a conduit; 51. a mold base; 52. fixing a die fixing plate; 53. fixing a template; 54. a cavity; 55. a gate; 56. a vacuum valve; 57. moving the template; 58. a movable die holder; 59. a vacuum line; 60. a fixed die base fixing plate; 61. a vacuum pump is pumped; 62. a crank link mechanism; 63. a crank connecting rod fixing plate; 64. a hydraulic cylinder fixing plate; 65. a die opening and closing hydraulic cylinder; 66. an eddy current heater; 67. a vacuum heat preservation cavity; 68. resistance heating wires; 69. an eddy current heating cavity; 70. a material storage heat preservation cavity.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1, 2, 5 and 6, an automatic quantitative feeding system for heat preservation for vacuum cold-pressing casting comprises a heating and heat-preserving tank 10 fixedly arranged on the ground, a guide plate 11 is fixedly arranged in the middle of the inner side of the heating and heat-preserving tank 10, the guide plate 11 divides the inner cavity of the heating and heat-preserving tank 10 into an upper cavity and a lower cavity, the upper cavity of the heating and heat-preserving tank 10 is a vortex heating cavity 69, a vortex heater 66 is fixedly arranged on the inner side of the side wall of the vortex heating cavity 69 and used for heating and melting solid metal materials, the lower cavity of the heating and heat-preserving tank 10 is a storage heat-preserving cavity 70, a resistance heating wire 68 is fixedly arranged on the inner side of the side wall of the storage heat-preserving cavity 70 and used for heating metal liquid, a vacuum heat-preserving cavity 67 is arranged in the side wall of the heating and heat-preserving tank 10 and used for heat preservation of metal liquid, a feed inlet 17 is fixedly arranged on the upper side of the top of the heating and heat-preserving tank 10, the feed inlet 17 is connected with an external feeding device and used for feeding, the upside of heating heat preservation jar 10 top is equipped with adjusting device, adjusting device is including fixed the gear motor fixing base 13 of heating heat preservation jar 10 top upside, the fixed gear motor 14 that is equipped with on the gear motor fixing base 13, the 14 output of gear motor is equipped with gear shaft 15, the fixed gear 16 that is equipped with on the gear shaft 15, adjusting device rotates and is equipped with adjusting gear shaft 19, the fixed adjusting gear 18 that is equipped with in adjusting gear shaft 19 top, adjusting gear shaft 19 with the fixed adjustment spring holder 20 that is equipped with on the adjusting gear 18 junction outer wall, adjustment spring holder 20 downside is equipped with the recess, the recess with be connected with adjustment spring 21 between the side wall on heating heat preservation jar 10, adjusting gear 18 with gear 16 meshes mutually, is used for adjusting reciprocating of adjusting gear shaft 19.

As shown in fig. 1, fig. 2, fig. 5 and fig. 6, the lower end of the adjusting gear shaft 19 extends into the vortex heating cavity 69, the middle of the lower end of the adjusting gear shaft 19 is fixedly provided with an X-shaped vortex heating screen 12, the lower end of the adjusting gear shaft 19 is in sliding fit with the guide plate 11, a feeding sealing device is arranged at the joint of the vortex heating cavity 69 and the middle of the storage heat preservation cavity 70, the feeding sealing device comprises an annular position flow sensor 22 fixedly arranged on the upper side of the lower end of the adjusting gear shaft 19, feeding ports 23 are arranged at the left and right ends of the lower side of the annular position flow sensor 22, a feeding channel 24 arranged inside the lower end of the adjusting gear shaft 19, discharge ports 25 arranged at the left and right sides of the lower end of the feeding channel 24, a vacuum sealing valve 27 is arranged at the top of the lower end of the adjusting gear shaft 19, a sealing spring 26 is arranged at the upper end of the vacuum sealing valve 27, the sealing spring 26 is used for ensuring the sealing effect of the vacuum sealing valve 27, and the feeding sealing device is used for controlling the feeding of molten metal and the vacuum sealing of the die casting system.

As shown in fig. 1, 2 and 4, a feeding guide pipe 29 is fixedly arranged on the right side of the bottom of the heating and heat-preserving tank 10, a feeding flow meter 28 is fixedly arranged on the feeding guide pipe 29 and used for measuring the volume of the molten metal flowing through the feeding guide pipe 29, a first electromagnetic check valve 30 is fixedly arranged in the feeding guide pipe 29, a valve core 31 is arranged inside the first electromagnetic check valve 30, a first electromagnet 32 is arranged on the upper side of the outside of the first electromagnetic check valve 30, a second electromagnet 33 is arranged on the upper side of the outside of the first electromagnetic check valve 30, the first electromagnet 32 is used for controlling the valve core 31 to move upwards and rightwards, so that the first electromagnetic check valve 30 is controlled to be opened, and the second electromagnet is used for controlling the valve core 31 to return to the initial position, so that the first electromagnetic check valve 30 is controlled to be closed, and the flow condition of the molten metal is controlled.

As shown in fig. 1, 2 and 4, the other end of the feeding draft tube 29 is connected with a quantitative feeding device, the quantitative feeding device includes a quantitative feeding storage tank 34 fixed on the ground, a hydraulic device fixing plate 36 is fixed on the upper side of the outside of the quantitative feeding storage tank 34, a hydraulic device carriage 38 is fixed on the upper side of the hydraulic device fixing plate 36, a quantitative feeding hydraulic cylinder 39 is fixed on the upper side of the hydraulic device carriage 38, a hydraulic cylinder upper outlet 40 is fixed on the upper right wall of the quantitative feeding hydraulic cylinder 39, a hydraulic cylinder lower inlet/outlet 42 is fixed on the lower right wall of the quantitative feeding hydraulic cylinder 39, a hydraulic push plate 41 is slidably arranged inside the quantitative feeding hydraulic cylinder 39, a hydraulic rod 37 is fixed on the hydraulic push plate 41, the lower end of the hydraulic rod 37 extends into the quantitative feeding storage tank 34, and a push plate 35 is fixed on the lower end of the hydraulic rod 37, the thrust plate 35 and the inside sliding connection of ration pay-off storage tank 34, the pneumatic cylinder go up export 40 with import and export 42 connect the external equipment respectively under the pneumatic cylinder, the fixed pay-off honeycomb duct 44 that is equipped with of ration pay-off storage tank 34 lower extreme opposite side, the pay-off honeycomb duct 44 is close to ration pay-off storage tank 34 one side is fixed and is equipped with pay-off flowmeter 43, pay-off honeycomb duct 44 is kept away from ration pay-off storage tank 34 one side is fixed and is equipped with second electromagnetism check valve 45.

As shown in fig. 1, 2 and 4, the other side of the feeding guide pipe 44 is connected with an injection device of the die-casting system, the injection device includes a die base 51 installed on an external supporting device, an injection hydraulic cylinder 46 is fixedly arranged on the die base 51, an injection push rod 47 is arranged at an output end of the injection hydraulic cylinder 46, an injection punch 48 is fixedly arranged at the other end of the injection push rod 47, a fixed die fixing plate 52 is fixedly arranged on the die base 51, an injection guide pipe 50 is fixedly arranged on the fixed die fixing plate 52, an injection cavity 49 is arranged inside the injection guide pipe 50, the injection punch 48 extends into the injection cavity 49, the lower end of the injection cavity 49 is connected with an inner cavity of the feeding guide pipe 44, and the right end of the injection cavity 49 is connected with an open-close die device of the die-casting system.

As shown in fig. 1, 2 and 3, the mold opening and closing device includes a fixed mold fixing plate 52 fixedly disposed on the mold 51, a fixed mold plate 53 is fixedly disposed on the left side of the fixed mold fixing plate 52, the lower side of the fixed mold plate 53 is connected with the top end of the injection conduit 50, a female mold surface is disposed on the left side of the fixed mold plate 53, a gate 55 is disposed on the left lower side of the fixed mold plate 53, a fixed mold base fixing plate 60 is slidably disposed on the mold base 51, a movable mold base 58 is fixedly disposed on the right side of the fixed mold base fixing plate 60, a movable mold plate 57 is fixedly disposed on the right side of the movable mold base 58, a male mold surface is fixedly disposed on the right side of the movable mold plate 57, the right side of the movable mold plate 57 and the left side of the fixed mold plate 53 cooperate to form a mold cavity 54, the mold cavity 54 is used for molding a die-casting product, a crank connecting rod fixing plate 63 is fixedly disposed on the left side of the mold base 51, a hydraulic cylinder fixing plate 64 is fixedly disposed on the left side of the crank connecting rod fixing plate 63, an opening and closing die hydraulic cylinder 65 is fixedly arranged between the hydraulic cylinder fixing plates 64, a crank connecting rod mechanism 62 is arranged on the right side of the crank connecting rod fixing plate 63, and the crank connecting rod mechanism 62 is in sliding connection with the fixed die base fixing plate 60 to drive the die casting system to open and close the die.

As shown in fig. 1, 2 and 3, a vacuum-pumping device is provided above the joint surface between the movable die plate 57 and the fixed die plate 53, the vacuum-pumping device includes a vacuum valve 56 provided above the joint surface between the fixed die plate 53 and the movable die plate 57, a vacuum suction hole is provided above the joint surface, a vacuum line 59 is fixedly provided above the vacuum valve 56, a vacuum-pumping pump 61 is connected to the vacuum line 59, and the vacuum valve 56 is connected to the vacuum suction hole to vacuum the die-casting system after the die assembly.

Before the die casting process of the die starts, solid metal materials to be heated and melted are added into the vortex heating cavity 69 through the feeding port 17 by external feeding equipment, the solid metal materials fall on the X-shaped vortex heating filter screen 12 and are melted into metal liquid under the heating action of the vortex heater 66, the metal liquid is filtered by the X-shaped vortex heating filter screen 12 and guided by the guide plate 11 and then is collected at the bottom of the vortex heating cavity 69, at the moment, the feeding sealing device is in a sealing state, the die casting process of the die starts, the die opening and closing device is started, the crank connecting rod mechanism 62 starts to extend rightwards under the action of the die opening and closing hydraulic cylinder 65, so that the fixed die holder fixing plate 60 is driven to slide rightwards, the fixed die holder fixing plate 60 drives the movable die holder 58 to move rightwards, the movable die holder 58 drives the movable die plate 57 to move rightwards until the die is completely closed, and after the die is completely closed, the first electromagnetic one-way valve 30 and the second electromagnetic one-way valve 45 are opened, the vacuumizing device is started, the vacuumizing pump 61 is connected with the vacuum pumping hole through a vacuum pipeline 59 and a vacuum valve 56 to pump air in the whole die-casting system, when the air pressure in the die-casting system is lower than a set value, the vacuumizing device is closed, the first electromagnetic one-way valve 30 and the second electromagnetic one-way valve 45 are closed, the adjusting device is started, the gear motor 14 is started to drive the gear shaft 15 to rotate, the gear shaft 15 drives the gear 16 to rotate, the gear 16 is meshed with the adjusting gear 18, the adjusting gear 18 rotates to drive the adjusting gear shaft 19 to rotate and move downwards, the discharge hole 25 and the vacuum sealing valve 27 which are arranged at the lower end of the adjusting gear shaft 19 move downwards, the discharge hole 25 moves into the storage heat preservation cavity 70, the feeding sealing device is switched to a feeding state, the gear motor 14 is closed, and the molten metal at the bottom of the vortex heating cavity 69 flows into the storage heat preservation cavity 70 through the feeding channel 24 between the feed hole 23 and the discharge hole 25, the sensor ring position flow sensor 22 signals when the molten metal in the vortex heating chamber 69 is below the feed opening 23 or when a set volume of molten metal is flowing through, the gear motor 14 is restarted, the adjustment gear shaft 19 is moved upward, the vacuum sealing valve 27 returns to the initial position, and the feed seal assembly is switched to the sealed state.

After the metal solution in the storage heat preservation cavity 70 reaches the set volume, the first electromagnetic one-way valve 30 is opened, the valve core 31 moves up and left under the action of the first electromagnet 32, the feeding guide pipe 29 is connected, the metal solution flows into the inner cavity of the quantitative feeding storage tank 34 through the feeding guide pipe 29, the metal solution flowing into the inner cavity of the quantitative feeding storage tank 34 reaches the volume set by the feeding flowmeter 28, the first electromagnetic one-way valve 30 closes the second electromagnetic one-way valve 45 and opens, the quantitative feeding device is started, the quantitative feeding hydraulic cylinder 39 is started, the liquid enters the lower inlet/outlet 42 of the liquid inlet hydraulic cylinder through the upper inlet/outlet 40 of the external connection equipment hydraulic cylinder, the hydraulic push plate 41 is driven to move downwards, the hydraulic rod 37 is driven to move downwards, the push plate 35 is driven to move downwards by the hydraulic rod 37, the metal solution enters the feeding guide pipe 44, and the metal solution flowing through the feeding guide pipe 44 enters the injection cavity 49, when the volume of the flowing liquid reaches the set volume of the feeding flowmeter 43, the second electromagnetic one-way valve 45 is closed, the injection device is started, the injection hydraulic cylinder 46 drives the injection push rod 47 to move leftwards, the injection push rod 47 drives the injection punch 48 to move leftwards, the injection punch 48 pushes the molten metal in the injection cavity 49 to enter the cavity 54 through the gate 55, the pressure maintaining is carried out, the molding of a die-casting product is completed, the injection hydraulic cylinder 46 drives the injection punch 48 to return to the initial position, the die opening and closing device is started, the die-casting system opens the die, the die-casting product is taken out, the die is closed, the vacuumizing device is started, after the vacuumizing is completed, the second electromagnetic one-way valve 45 is opened, the quantitative feeding device is started, the quantitative feeding is carried out, the injection device is started, the pressure maintaining is carried out, the die-casting product is molded, and the die is opened and closed. Obviously, the subsequent vacuum pumping only needs to extract air in the injection and die opening and closing device, the steps are repeated, when the volume of the molten metal flowing through the feeding flowmeter 28 reaches the maximum set value, the first electromagnetic one-way valve 30 is closed, the feeding sealing device is started to automatically feed, when the volume of the molten metal flowing through the feeding flowmeter 43 reaches the set maximum value, the first electromagnetic one-way valve 30 is opened, the second electromagnetic one-way valve 45 is closed, the flow pushing plate 35 returns to the initial position, and the feeding step is repeated to finish feeding. And circulating the steps to realize the automatic quantitative feeding of the die casting system.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.