A low-pressure casting device for a battery box of a drone

Abstract

The application relates to the unmanned aerial vehicle battery box processing technical field, in particular to a low-pressure casting device for unmanned aerial vehicle battery boxes, which comprises a base, further comprises a conveying mechanism, a forming mechanism and an adjusting mechanism, the conveying mechanism comprises a liquid lifting pipe and a feeding assembly, the forming mechanism comprises an upper die, a first lower die, a second lower die and a pushing assembly, the adjusting mechanism comprises an adjusting plate, a first electric push rod, a traction assembly and a push-pull assembly, a sliding groove is arranged on the outer wall of a casting table, the adjusting plate is arranged in the sliding groove through two sliding strips, the first electric push rod is fixedly arranged on the outer wall of one end of the casting table, the output end of the first electric push rod is fixedly connected with one end of the first lower die away from the connecting rod, the top of the base is fixedly provided with a mounting table, the push-pull assembly is arranged between the adjusting plate and the mounting table, and the traction assembly is arranged between the second lower die and the push-pull assembly. The low-pressure casting device for unmanned aerial vehicle battery boxes can meet the low-pressure casting requirements of battery boxes with different wall thicknesses, and the practicability of the device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the unmanned aerial vehicle battery box processing technical field, specifically relates to a kind of unmanned aerial vehicle battery box low-pressure casting device. BACKGROUND

[0002] Unmanned aerial vehicle battery box is the vital component in unmanned aerial vehicle system, its role is not limited to simple battery containment, it is also related to safety protection, stable power supply, heat dissipation management and structural integration etc., aluminum alloy unmanned aerial vehicle battery box is made by low-pressure casting.

[0003] The existing unmanned aerial vehicle battery box low-pressure casting device has the following shortcomings:

[0004] The conventional low-pressure casting device has only one lower die and one upper die, the bottom of the upper die is fixedly designed with an insertion block, the insertion block is inserted into a groove in the lower die, and the gap between the insertion block and the groove forms a mold cavity of the formed product. Usually, only one kind of product with a certain wall thickness can be casted, and the practicability of the device needs to be improved.

[0005] Different types of unmanned aerial vehicles have different thicknesses of battery boxes. If the battery boxes with different wall thicknesses are fed with metal liquid through the same size of liquid inlet to the mold cavity, the flow rate of the metal liquid cannot meet the casting requirements of the battery boxes with different wall thicknesses, which may cause problems such as porosity and cold shut of the battery boxes, thereby reducing the service life thereof. SUMMARY

[0006] The present application aims to provide a kind of unmanned aerial vehicle battery box low-pressure casting device.

[0007] To achieve this purpose, the present application adopts the following technical solutions:

[0008] A kind of unmanned aerial vehicle battery box low-pressure casting device is provided, which includes a base, and the base is arranged horizontally.

[0009] It also includes a conveying mechanism, a forming mechanism and an adjusting mechanism.

[0010] The conveying mechanism is arranged on the top of the base, and the conveying mechanism includes a liquid lifting pipe and a feeding assembly. The top of the base is fixedly provided with a backing plate, the feeding assembly is arranged on the top of the backing plate, a casting table and a top plate are sequentially fixed above the backing plate, and the liquid lifting pipe is arranged on the casting table.

[0011] The forming mechanism is arranged on the top of the casting table, and the forming mechanism includes an upper die, a first lower die, a second lower die and a pushing assembly. The pushing assembly is arranged on the top plate, the upper die is fixedly arranged on the pushing assembly, the second lower die is slidably arranged on the top of the casting table, and the first lower die is fixedly arranged on one end of the second lower die through four connecting rods.

[0012] The adjusting mechanism is arranged on the base, and comprises an adjusting plate, a first electric push rod, a traction assembly and a push-pull assembly. A sliding groove is formed in the outer wall of the casting table. The adjusting plate is arranged in the sliding groove through two sliding strips. The first electric push rod is fixedly arranged on one end of the outer wall of the casting table. The output end of the first electric push rod is fixedly connected with one end of the first lower mold away from the connecting rod. The top of the base is fixedly provided with a mounting table. The push-pull assembly is arranged between the adjusting plate and the mounting table. The traction assembly is arranged between the second lower mold and the push-pull assembly.

[0013] Further, the feeding assembly comprises a crucible, an air inlet pipe and a liquid injection pipe. The crucible is fixedly arranged on the top of the base plate. The air inlet pipe and the liquid injection pipe are both fixedly arranged on the outer wall of the crucible. The top of the crucible is attached to the bottom of the casting table.

[0014] Further, the pushing assembly comprises a push plate and an air cylinder. The air cylinder is inserted into the top of the top plate. The push plate is fixedly arranged between the output end of the air cylinder and the upper mold. The bottom of the upper mold is fixedly provided with an insertion block.

[0015] Further, the top of the first lower mold is provided with a first groove for inserting the insertion block. The top of the second lower mold is provided with a second groove for inserting the insertion block. The bottom of the first groove is provided with a first liquid inlet. The bottom of the second groove is provided with a second liquid inlet. The diameter of the first liquid inlet is larger than that of the second liquid inlet. The outer wall of the adjusting plate is respectively provided with a first through hole and a second through hole. The inner part of the liquid lifting pipe is provided with a conveying channel. The diameters of the conveying channel, the first through hole and the first liquid inlet are consistent. The diameters of the second through hole and the second liquid inlet are consistent.

[0016] Further, the bottom of the casting table is fixedly provided with a second electric push rod. The output end of the second electric push rod is fixedly provided with a baffle. The liquid lifting pipe is inserted into the baffle. The top end of the liquid lifting pipe is attached to the bottom of the adjusting plate.

[0017] Further, the traction assembly comprises a traction rod, a sliding plate, a rack, a first gear and a second gear. The outer wall of the casting table is fixedly provided with a guide rod through a limiting block. The sliding plate is slidably arranged on the outer wall of the guide rod. The traction rod is fixedly arranged between the second lower mold and one end of the sliding plate. The top of the mounting table is fixedly provided with a guide rail. The rack is slidably arranged on the top of the guide rail. The top of the mounting table is rotatably provided with a first rotation shaft and a second rotation shaft. The first gear and the second gear are fixedly arranged on the first rotation shaft and the second rotation shaft, respectively. The rack, the first gear and the second gear are sequentially connected in meshing.

[0018] Further, the outer wall of the guide rod is sleeved with a telescopic spring. The limiting block and the sliding plate are respectively in contact with both ends of the telescopic spring.

[0019] Further, the push-pull assembly comprises a rotating disc, a connecting rod, a push block and a plug rod, the rotating disc is fixedly arranged at the bottom end of the second rotating shaft, the top of the mounting table is fixedly provided with a sliding rail, the push block is slidingly arranged at the top of the sliding rail, the connecting rod is hingedly arranged between the edge of the rotating disc and the push block, the plug rod is fixedly arranged at one end of the push block, and the end of the plug rod away from the push block is fixedly connected with the adjusting plate, and the plug rod is inserted with the casting table.

[0020] Further, the bottom of the upper die is fixedly provided with four guide columns, and the top of the casting table is fixedly provided with two limiting dies, the top of the two limiting dies is provided with four limiting holes, and the axis direction of each guide column is consistent with that of one limiting hole.

[0021] Further, the outer walls of the gas inlet pipe and the liquid injection pipe are fixedly provided with electromagnetic valves.

[0022] The beneficial effects of the present application are as follows:

[0023] 1. The present application designs a forming mechanism, i.e. an upper die, a first lower die, a second lower die and a pushing assembly, designs a first groove in the first lower die and a second groove in the second lower die, and designs the length, width and height of the first groove to be greater than those of the second groove, so that the thickness of the first cavity and the second cavity formed after the insertion of the plug block into the first lower die and the second lower die is different, thereby meeting the low-pressure casting requirements of battery boxes with different wall thicknesses, and improving the practicality of the device.

[0024] 2. The present application designs a forming mechanism and an adjusting mechanism, and aligns the first liquid inlet, the first through hole and the conveying channel when casting thick-walled battery boxes, at this time, the diameter of the first liquid inlet is larger, avoiding the generation of pores inside the product or near the surface due to the too fast flow rate of the metal liquid when casting thick-walled products, avoiding the decrease of the fatigue strength of the battery box and improving the service life, and when casting thin-walled battery boxes, the second through hole, the second liquid inlet and the conveying channel are aligned by the adjusting mechanism to reduce the diameter of the liquid inlet and improve the flow rate of the metal liquid, thereby being beneficial to enhancing the flowability of the metal liquid and preventing the metal liquid from not filling the cavity and the large-area cold separation defect of the thin-walled casting when casting thin-walled battery boxes, thereby meeting the low-pressure casting requirements of the unmanned aerial vehicle battery box with different wall thicknesses, and improving the flexibility of the device.

[0025] 3. The present application designs a traction assembly, which can realize the linkage operation of the forming mechanism and the adjusting mechanism, and through the design of the first electric push rod, the first liquid inlet, the second liquid inlet, the first through hole, the second through hole and the conveying channel can realize the fitting relationship, thereby realizing the quick switching of the diameter of the liquid inlet, adjusting the flow rate of the metal liquid, meeting the casting requirements of the battery box with different wall thicknesses, and thereby being beneficial to improving the low-pressure casting efficiency and effect.

[0026] 4. By designing a traction component, the present invention can achieve the linkage operation of the forming mechanism and the adjustment mechanism through only the first electric push rod, thereby reducing the overall number of drive sources used in the device and reducing the power consumption of the device. This helps to reduce casting costs, while also helping to reduce the overall structure of the device, improve the integration level of the device, and reduce costs and space occupation.

[0027] 5. The invention designs a telescopic spring, with the limiting block and the sliding plate respectively contacting the two ends of the telescopic spring. The telescopic spring, in conjunction with the first electric push rod, acts as a buffer, ensuring that the second lower mold slides at a uniform speed through the sliding plate driving the rack, thereby improving the stability of the molten metal flow rate regulation and ensuring the smooth progress of low-pressure casting.

[0028] 6. This invention, through the design of a baffle and a second electric push rod, after each time the molten metal is transported to the first or second lower mold by the riser pipe, the second electric push rod drives the riser pipe to move away from below the adjusting plate, and the baffle blocks the first or second through hole on the adjusting plate, thereby improving the pressure holding effect of the molten metal in the first or second groove, facilitating faster molding of the battery box, improving casting efficiency, and at the same time, allowing the unsolidified molten metal in the riser pipe to fall into the crucible along the conveying channel due to its own weight, effectively avoiding resource waste. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below.

[0030] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0031] Figure 2 for Figure 1 Enlarged view of point A in the image;

[0032] Figure 3 This is the left view of the present invention;

[0033] Figure 4 for Figure 3 Enlarged view of point B in the image;

[0034] Figure 5 This is a schematic diagram of the cross-sectional structure of the crucible, the first lower mold, and the two limiting molds of the present invention;

[0035] Figure 6 for Figure 5 Enlarged view of point C in the image;

[0036] Figure 7 This is a planar sectional view of the crucible, riser tube, first lower mold, and two limiting molds of the present invention;

[0037] Figure 8 for Figure 7Enlarged view of D in FIG. 1;

[0038] In the figure: riser 10, pad 11, casting table 12, top plate 13, upper mold 14, first lower mold 15, second lower mold 16, adjusting plate 17, first electric push rod 18, chute 19, sliding bar 20, mounting table 21, crucible 22, air inlet pipe 23, liquid injection pipe 24, push plate 25, air cylinder 26, plug 27, first groove 28, second groove 29, first liquid inlet 30, second liquid inlet 31, first through hole 32, second through hole 33, conveying channel 34, second electric push rod 35, baffle 36, traction rod 37, sliding plate 38, rack 39, first gear 40, second gear 41, guide rail 42, extension spring 43, turntable 44, connecting rod 45, push block 46, insertion rod 47, guide column 48, limiting mold 49, limiting hole 50, electromagnetic valve 51. DETAILED DESCRIPTION

[0039] The technical solutions of the present application will be further described below in combination with the drawings and through specific embodiments.

[0040] Among them, the drawings are only used for illustrative explanation, and the representation is only a schematic diagram, not a physical diagram, and cannot be understood as a limitation on the present application; in order to better illustrate the embodiments of the present application, some components of the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product.

[0041] Referring to Figures 1 to 8 As shown in the figure, the present application provides a low-pressure casting device for unmanned aerial vehicle battery box, which comprises a base, the base is horizontally arranged;

[0042] It also includes a conveying mechanism, a forming mechanism and an adjusting mechanism;

[0043] The conveying mechanism is arranged on the top of the base, and the conveying mechanism comprises a riser 10 and a feeding assembly, the top of the base is fixedly provided with a pad 11, the feeding assembly is arranged on the top of the pad 11, a casting table 12 and a top plate 13 are sequentially fixed above the pad 11, and the riser 10 is arranged on the casting table 12;

[0044] The forming mechanism is arranged on the top of the casting table 12, and the forming mechanism comprises an upper mold 14, a first lower mold 15, a second lower mold 16 and a pushing assembly, the pushing assembly is arranged on the top plate 13, the upper mold 14 is fixedly arranged on the pushing assembly, the second lower mold 16 is slidingly arranged on the top of the casting table 12, and the first lower mold 15 is fixedly arranged at one end of the second lower mold 16 through four connecting rods;

[0045] The adjusting mechanism is arranged on the base, and the adjusting mechanism comprises an adjusting plate 17, a first electric push rod 18, a traction assembly and a push-pull assembly. A sliding groove 19 is formed in the outer wall of the casting table 12. The adjusting plate 17 is slidably arranged in the sliding groove 19 through two sliding strips 20. The first electric push rod 18 is fixedly arranged on one end of the outer wall of the casting table 12. The output end of the first electric push rod 18 is fixedly connected with the end of the first lower mold 15 away from the connecting rod. The top of the base is fixedly provided with a mounting table 21. The push-pull assembly is arranged between the adjusting plate 17 and the mounting table 21. The traction assembly is arranged between the second lower mold 16 and the push-pull assembly.

[0046] With reference to Figures 1 to 8 The feeding assembly comprises a crucible 22, an air inlet pipe 23 and a liquid injection pipe 24. The crucible 22 is fixedly arranged on the top of the base plate 11. The air inlet pipe 23 and the liquid injection pipe 24 are both fixedly arranged on the outer wall of the crucible 22. The top of the crucible 22 is attached to the bottom of the casting table 12. When the first cavity is formed, the electromagnetic valve 51 on the liquid injection pipe 24 is first started by the controller, so that the liquid injection pipe 24 is opened. The metal liquid used for casting the battery box is poured into the interior of the crucible 22 through the liquid injection pipe 24. The liquid level is controlled to be below the second electric push rod 35. Then the electromagnetic valve 51 on the liquid injection pipe 24 is closed by the controller, so that the liquid injection pipe 24 is closed. The electromagnetic valve 51 on the air inlet pipe 23 is started by the controller, so that the air inlet pipe 23 is opened. The existing air compressor or other equipment is used to introduce compressed gas into the interior of the crucible 22.

[0047] With reference to Figures 1 to 8 The pushing assembly comprises a push plate 25 and an air cylinder 26. The air cylinder 26 is inserted into the top of the top plate 13. The push plate 25 is fixedly arranged between the output end of the air cylinder 26 and the upper mold 14. The bottom of the upper mold 14 is fixedly provided with an insertion block 27. The device is provided with a controller. All electrical equipment on the device is electrically connected with the controller. When the unmanned aerial vehicle battery box low-pressure casting work is performed, the air cylinder 26 is first started by the controller, so that the output end thereof is vertically extended downward. Since the output end is fixedly connected with the upper mold 14 through the push plate 25, the upper mold 14 and the insertion block 27 at the bottom thereof are vertically lowered together until the bottom of the upper mold 14 is attached to the top of the first lower mold 15. Then the insertion block 27 is inserted into the interior of the first groove 28. The gap between the insertion block 27 and the first groove 28 forms the first cavity of the thick-walled battery box.

[0048] With reference to Figures 1 to 8As shown, the top of the first lower mold 15 is provided with a first recess 28 for inserting the insert block 27, the top of the second lower mold 16 is provided with a second recess 29 for inserting the insert block 27, the bottom of the first recess 28 is provided with a first liquid inlet 30, the bottom of the second recess 29 is provided with a second liquid inlet 31, the diameter of the first liquid inlet 30 is larger than that of the second liquid inlet 31, the outer wall of the adjusting plate 17 is respectively provided with a first through hole 32 and a second through hole 33, the inside of the rising pipe 10 is provided with a conveying channel 34, the diameter of the conveying channel 34, the first through hole 32 and the first liquid inlet 30 are consistent, the diameter of the second through hole 33 is consistent with that of the second liquid inlet 31, when the liquid injection pipe 24 remains closed and the compressed gas is introduced into the inside of the crucible 22 containing the metal liquid through the air inlet pipe 23, a low pressure is caused on the surface of the metal liquid, so that the metal liquid enters the first cavity formed between the insert block 27 and the first recess 28 through the conveying channel 34 in the inside of the rising pipe 10, the first through hole 32 on the adjusting plate 17 and the first liquid inlet 30 at the bottom of the first lower mold 15 in turn, in addition, it should be noted that the length, width and height of the first recess 28 are all larger than those of the second recess 29, so that the thickness of the battery box cast by the first cavity is larger, therefore, the diameter of the first liquid inlet 30 is designed to be larger than that of the second liquid inlet 31, so as to avoid the pores in the product inside or near the surface caused by the too fast flow rate of the metal liquid when casting thick-walled products, avoid causing the fatigue strength of the battery box to decrease, and improve the service life.

[0049] Referring to Figures 1 to 8 As shown, the bottom of the casting table 12 is fixedly provided with a second electric push rod 35, the output end of the second electric push rod 35 is fixedly provided with a baffle 36, the rising pipe 10 is inserted with the baffle 36, the top end of the rising pipe 10 is attached to the bottom of the adjusting plate 17, when the metal liquid fills the first cavity, the second electric push rod 35 is started through the controller, so that the output end drives the baffle 36 to extend towards the end close to the second lower mold 16, and then the baffle 36 shields the first through hole 32, so as to facilitate the casting and forming of the battery box in the first cavity.

[0050] Referring to Figures 1 to 8As shown, the traction assembly comprises a traction rod 37, a sliding plate 38, a rack 39, a first gear 40 and a second gear 41, a guide rod is fixedly arranged on the outer wall of the casting table 12 through a limiting block, the sliding plate 38 is slidingly arranged on the outer wall of the guide rod, the traction rod 37 is fixedly arranged between the second lower mold 16 and one end of the sliding plate 38, the top of the mounting table 21 is fixedly provided with a guide rail 42, the rack 39 is slidingly arranged on the top of the guide rail 42, the top of the mounting table 21 is rotatably provided with a first rotating shaft and a second rotating shaft, the first gear 40 and the second gear 41 are fixedly arranged on the first rotating shaft and the second rotating shaft respectively, and the rack 39, the first gear 40 and the second gear 41 are sequentially meshed and connected. Since the length, width and height of the first groove 28 are all greater than those of the second groove 29, after the insertion block 27 is inserted into the second groove 29, the gap between the two forms the second cavity, so that the thickness of the battery box cast in the second cavity is smaller. When it is necessary to cast a thin-walled battery box, the first electric push rod 18 is started through the controller, so that the first lower mold 15 is driven to slide away from the limiting block through the output end thereof. Since the first lower mold 15 is fixedly connected with the second lower mold 16 through the four connecting rods, the second lower mold 16 is driven to slide towards the insertion block 27. Since the second lower mold 16 is fixedly connected with the rack 39 through the sliding plate 38, the sliding plate 38 is slidingly connected with the casting table 12 through the guide rod, the rack 39 is slidingly connected with the guide rail 42, the first gear 40 and the second gear 41 are fixedly connected with the first rotating shaft and the second rotating shaft respectively, and the rack 39, the first gear 40 and the second gear 41 are sequentially meshed and connected, so that the second rotating shaft is driven to rotate clockwise.

[0051] Referring to Figures 1 to 8 As shown, the outer wall of the guide rod is sleeved with a telescopic spring 43, and the limiting block and the sliding plate 38 abut against both ends of the telescopic spring 43. The telescopic spring 43 cooperates with the first electric push rod 18 to play an auxiliary buffering role, so as to ensure that the second lower mold 16 drives the rack 39 to slide uniformly through the sliding plate 38, thereby improving the stability of adjustment.

[0052] Referring to Figures 1 to 8As shown, the push-pull assembly includes a rotating disc 44, a connecting rod 45, a push block 46 and a plug rod 47, the rotating disc 44 is fixedly arranged at the bottom end of the second rotating shaft, the top of the mounting table 21 is fixedly provided with a sliding rail, the push block 46 is slidingly arranged at the top of the sliding rail, the connecting rod 45 is hingedly arranged between the edge of the rotating disc 44 and the push block 46, the plug rod 47 is fixedly arranged at one end of the push block 46, and the end of the plug rod 47 away from the push block 46 is fixedly connected with the adjusting plate 17, and the plug rod 47 is inserted with the casting table 12, when the second rotating shaft rotates clockwise, since the rotating disc 44 is fixedly connected with the bottom end of the second rotating shaft, the push block 46 is slidingly connected with the sliding rail, the rotating disc 44 and the push block 46 are hingedly connected with the two ends of the connecting rod 45 respectively, the plug rod 47 is fixedly connected with one end of the push block 46, and the end of the plug rod 47 away from the push block 46 is fixedly connected with the adjusting plate 17, and the plug rod 47 is inserted with the casting table 12, thereby driving the adjusting plate 17 to slide in the sliding groove 19 away from the one end of the mounting table 21, that is, when the second lower mold 16 slides to the position directly below the plug block 27, the second through hole 33 on the adjusting plate 17 is aligned with the second liquid inlet 31 at the bottom of the second recess 29, so as to reduce the diameter of the liquid inlet, improve the flow rate of the metal liquid, and thereby facilitate to enhance the flowability of the metal liquid, and prevent the metal liquid from not filling the cavity and the large-area cold shut defect of the thin-wall casting when the thin-wall battery box is cast.

[0053] Referring to Figures 1 to 8 As shown, the bottom of the upper mold 14 is fixedly provided with four guide columns 48, and the top of the casting table 12 is fixedly provided with two limiting molds 49, the top of each limiting mold 49 is provided with four limiting holes 50, the axis direction of each guide column 48 is consistent with that of one limiting hole 50, the four guide columns 48 are inserted and matched with the four limiting holes 50, so as to play a guiding effect and ensure that the upper mold 14 and the lower mold are closely combined, which is beneficial to improve the casting quality of the battery box, and the two limiting molds 49 can limit the two ends of the first lower mold 15 or the second lower mold 16, so as to ensure that the two lower molds will not deviate when they are docked with the plug block 27 after entering.

[0054] Referring to Figures 1 to 8 As shown, the outer walls of the gas inlet pipe 23 and the liquid inlet pipe 24 are fixedly provided with electromagnetic valves 51, and the two electromagnetic valves 51 are respectively used to control the opening and closing of the gas inlet pipe 23 and the liquid inlet pipe 24, so as to facilitate the injection of the metal liquid into the crucible 22 and the inlet of the compressed gas.

[0055] The working principle of the present application is as follows: the device is provided with a controller, and each electrical equipment on the device is electrically connected with the controller, when the unmanned aerial vehicle battery box low-pressure casting work is carried out, first, the controller is started to make the output end of the air cylinder 26 vertically downward, since the output end is fixedly connected with the upper mold 14 through the push plate 25, the upper mold 14 and the plug block 27 at the bottom of the upper mold 14 vertically descend together, until the bottom of the upper mold 14 is combined with the top of the first lower mold 15, and then the plug block 27 is inserted into the first recess 28, and the gap between the plug block 27 and the first recess 28 forms a first cavity for forming a thick-wall battery box.

[0056] When the first cavity is formed, first, the electromagnetic valve 51 on the injection pipe 24 is started by the controller, so that the injection pipe 24 is opened, and the molten metal for casting the battery box is poured into the inside of the crucible 22 through the injection pipe 24, and the liquid level is controlled below the second electric push rod 35, then the electromagnetic valve 51 on the injection pipe 24 is closed by the controller, so that the injection pipe 24 is closed, and the electromagnetic valve 51 on the air inlet pipe 23 is started by the controller, so that the air inlet pipe 23 is opened, and the inside of the crucible 22 is connected to the compressed gas by using the existing air compressor or other equipment.

[0057] When the injection pipe 24 remains closed and the compressed gas is connected to the inside of the crucible 22 containing the molten metal through the air inlet pipe 23, a low pressure is caused on the surface of the molten metal, so that the molten metal enters the first cavity formed between the plug 27 and the first recess 28 through the conveying channel 34 in the riser 10, the first through hole 32 on the adjusting plate 17 and the first liquid inlet 30 at the bottom of the first lower mold 15 in sequence, and the second electric push rod 35 is started by the controller, so that the output end drives the baffle 36 to extend to the end close to the second lower mold 16, and then the first through hole 32 is shielded by the baffle 36, facilitating the casting and forming of the battery box in the first cavity; in addition, it should be noted that the length, width and height of the first recess 28 are greater than those of the second recess 29, so that the thickness of the battery box cast by the first cavity is larger, and therefore the diameter of the first liquid inlet 30 is designed to be larger than that of the second liquid inlet 31, avoiding the generation of pores inside or near the surface of the product due to the too fast flow rate of the molten metal when casting thick-walled products, avoiding the decrease of the fatigue strength of the battery box, thereby improving the service life.

[0058] Since the length, width and height of the first recess 28 are greater than those of the second recess 29, after the plug 27 is inserted into the second recess 29, the gap between them forms the second cavity, so that the thickness of the battery box cast by the second cavity is smaller, when it is needed to cast a thin-walled battery box, the first electric push rod 18 is started by the controller, so that the output end drives the first lower mold 15 to slide away from the limit block, since the first lower mold 15 is fixedly connected with the second lower mold 16 through four connecting rods, the second lower mold 16 is driven to slide to the end close to the plug 27, since the second lower mold 16 is fixedly connected with the rack 39 through the sliding plate 38, the sliding plate 38 is slidingly connected with the casting table 12 through the guide rod, the rack 39 is slidingly connected with the guide rail 42, the first gear 40 and the second gear 41 are fixedly connected with the first rotating shaft and the second rotating shaft respectively, and the rack 39, the first gear 40 and the second gear 41 are sequentially meshed and connected, so that the second rotating shaft is driven to rotate clockwise.

[0059] When the second rotating shaft rotates clockwise, the rotating disc 44 is fixedly connected with the bottom end of the second rotating shaft, the push block 46 is slidingly connected with the slide rail, the rotating disc 44 and the push block 46 are respectively hingedly connected with the two ends of the connecting rod 45, the insertion rod 47 is fixedly connected with one end of the push block 46, the end of the insertion rod 47 away from the push block 46 is fixedly connected with the adjusting plate 17, the insertion rod 47 is inserted with the casting table 12, and the adjusting plate 17 is driven to slide in the slide groove 19 away from the mounting table 21, that is, when the second lower mold 16 slides to the position directly below the insertion block 27, the second through hole 33 on the adjusting plate 17 is aligned with the second liquid inlet 31 at the bottom of the second groove 29, so as to reduce the diameter of the liquid inlet, improve the flow rate of the metal liquid, and thus be beneficial to enhance the flowability of the metal liquid, prevent the metal liquid from not filling the cavity and the large-area cold shut defects of the thin-wall casting.

[0060] The telescopic spring 43 cooperates with the first electric push rod 18 to play an auxiliary buffering role, so as to ensure that the second lower mold 16 drives the rack 39 to slide uniformly through the slide plate 38, and improve the stability of the adjustment.

Claims

1. A low-pressure casting device for a drone battery box, comprising a base horizontally arranged, characterized in that: It also comprises a conveying mechanism, a forming mechanism and an adjusting mechanism; The conveying mechanism is arranged on the top of the base, and comprises a liquid lifting pipe (10) and a feeding assembly. The top of the base is fixedly provided with a base plate (11), the feeding assembly is arranged on the top of the base plate (11), a casting table (12) and a top plate (13) are sequentially and fixedly arranged above the base plate (11), and the liquid lifting pipe (10) is arranged on the casting table (12). The forming mechanism is arranged on the top of the casting table (12), and comprises an upper die (14), a first lower die (15), a second lower die (16) and a pushing assembly. The pushing assembly is arranged on the top plate (13), the upper die (14) is fixedly arranged on the pushing assembly, the second lower die (16) is slidingly arranged on the top of the casting table (12), and the first lower die (15) is fixedly arranged at one end of the second lower die (16) through four connecting rods. The pushing assembly comprises a push plate (25) and a gas cylinder (26), the gas cylinder (26) is inserted into the top of the top plate (13), the push plate (25) is fixedly arranged between the output end of the gas cylinder (26) and the upper die (14), and the bottom of the upper die (14) is fixedly provided with an insertion block (27). The top of the first lower die (15) is provided with a first groove (28) for inserting the insertion block (27), the top of the second lower die (16) is provided with a second groove (29) for inserting the insertion block (27), the bottom of the first groove (28) is provided with a first liquid inlet (30), the bottom of the second groove (29) is provided with a second liquid inlet (31), the diameter of the first liquid inlet (30) is larger than that of the second liquid inlet (31), the outer wall of the adjusting plate (17) is respectively provided with a first through hole (32) and a second through hole (33), the inside of the liquid lifting pipe (10) is provided with a conveying channel (34), the diameters of the conveying channel (34), the first through hole (32) and the first liquid inlet (30) are consistent, and the diameters of the second through hole (33) and the second liquid inlet (31) are consistent. The adjusting mechanism is arranged on the base, and comprises an adjusting plate (17), a first electric push rod (18), a traction assembly and a push-pull assembly. A sliding groove (19) is formed in the outer wall of the casting table (12), the adjusting plate (17) is slidingly arranged in the sliding groove (19) through two sliding bars (20), the first electric push rod (18) is fixedly arranged on the outer wall of one end of the casting table (12), the output end of the first electric push rod (18) is fixedly connected with the end of the first lower die (15) away from the connecting rods, the top of the base is fixedly provided with a mounting table (21), the push-pull assembly is arranged between the adjusting plate (17) and the mounting table (21), and the traction assembly is arranged between the second lower die (16) and the push-pull assembly to drive the push-pull assembly to move, so as to quickly switch the diameters of the liquid inlets.

2. The low-pressure casting device for a battery box of a UAV according to claim 1, characterized in that: The feeding assembly comprises a crucible (22), an air inlet pipe (23) and a liquid injection pipe (24), the crucible (22) is fixedly arranged on the top of the base plate (11), the air inlet pipe (23) and the liquid injection pipe (24) are both fixedly arranged on the outer wall of the crucible (22), and the top of the crucible (22) is attached to the bottom of the casting table (12).

3. The low-pressure casting device for a battery box of a UAV according to claim 2, characterized in that: The bottom of the casting table (12) is fixedly provided with a second electric push rod (35), the output end of the second electric push rod (35) is fixedly provided with a baffle (36), the lifting pipe (10) is inserted with the baffle (36), and the top end of the lifting pipe (10) is attached to the bottom of the adjusting plate (17).

4. The low-pressure casting device for a battery box of a UAV according to claim 3, characterized in that: The traction assembly comprises a traction rod (37), a sliding plate (38), a rack (39), a first gear (40) and a second gear (41), the outer wall of the casting table (12) is fixedly provided with a guide rod through a limiting block, the sliding plate (38) is slidingly arranged on the outer wall of the guide rod, the traction rod (37) is fixedly arranged between the second lower mold (16) and one end of the sliding plate (38), the top of the mounting table (21) is fixedly provided with a guide rail (42), the rack (39) is slidingly arranged on the top of the guide rail (42), the top of the mounting table (21) is rotatably provided with a first rotating shaft and a second rotating shaft, the first gear (40) and the second gear (41) are fixedly arranged on the first rotating shaft and the second rotating shaft respectively, and the rack (39), the first gear (40) and the second gear (41) are sequentially and meshingly connected.

5. The low pressure casting device for unmanned aerial vehicle battery box according to claim 4, characterized in that: The outer wall of the guide rod is sleeved with a telescopic spring (43), and the limiting block and the sliding plate (38) are respectively in contact with both ends of the telescopic spring (43).

6. The low pressure casting device for a battery box of a UAV according to claim 5, characterized in that: The push-pull assembly comprises a turntable (44), a connecting rod (45), a push block (46) and a plug rod (47), the turntable (44) is fixedly arranged at the bottom end of the second rotating shaft, the top of the mounting table (21) is fixedly provided with a sliding rail, the push block (46) is slidingly arranged on the top of the sliding rail, the connecting rod (45) is hingedly arranged between the edge of the turntable (44) and the push block (46), the plug rod (47) is fixedly arranged at one end of the push block (46), one end of the plug rod (47) away from the push block (46) is fixedly connected with the adjusting plate (17), and the plug rod (47) is inserted with the casting table (12).

7. The low pressure casting device for a battery box of a UAV according to claim 6, characterized in that: The bottom of the upper mold (14) is fixedly provided with four guide columns (48), the top of the casting table (12) is fixedly provided with two limiting molds (49), the top of the two limiting molds (49) is provided with four limiting holes (50), and the axis direction of each guide column (48) is consistent with that of one limiting hole (50).

8. The low-pressure casting device for a battery box of a UAV according to claim 7, characterized in that: The outer walls of the air inlet pipe (23) and the liquid injection pipe (24) are fixedly provided with electromagnetic valves (51).

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