Efficient spraying device for release agent in die cavity of die-casting machine

Abstract

The invention relates to the technical field of die-casting machines, and discloses a die-casting machine die cavity release agent efficient spraying device which comprises a die-casting machine body, a molten aluminum feeding machine is installed in the die-casting machine body, a die is installed on one side of the die-casting machine body, and two portal frames are fixedly connected to the top of the die-casting machine body; according to the efficient spraying device for the release agent in the die cavity of the die-casting machine, high-temperature steam and splashes generated by spraying of the release agent are effectively captured through the multi-mechanism linkage design, it is guaranteed that the die-casting operation environment is clean and safe, pollutants are prevented from corroding core components such as a die closing mechanism and an injection system of the die-casting machine, and the spraying efficiency is improved. The die is effectively prevented from being polluted, a stable environment is provided for die casting core links such as molten aluminum injection and pressure maintaining forming, the size precision and the surface quality of die castings are remarkably improved, the die casting production efficiency and the yield are greatly improved, and the high-precision and large-scale production requirements of automobile non-ferrous metal die castings are met.

Description

Technical Field

[0001] This invention relates to the field of mold release agent spraying technology for die casting machines, and more particularly to a high-efficiency mold release agent spraying device for die casting machine mold cavities. Background Technology

[0002] As a core application area for non-ferrous metal die casting, the automotive industry uses lightweight non-ferrous metal die castings made of aluminum alloys, magnesium alloys, etc., which are widely used in the production of core components such as automobile chassis, engine blocks, and transmission housings due to their lightweight and high strength characteristics. As a key piece of equipment for die casting, the die casting machine's mold cavity release agent spraying process is one of the core links in die casting production. The uniform spraying of the release agent can not only effectively prevent the casting from sticking to the mold and ensure the casting forming accuracy and surface quality, but also cool and lubricate the high-temperature mold, extend the mold's service life, and directly affect the efficiency, yield, and equipment operation and maintenance costs of die casting production.

[0003] Uniform spraying of release agent is a crucial pre-processing step in die casting production. It not only prevents castings from sticking to the mold, ensuring the forming accuracy and surface quality of die castings, but also cools and lubricates the high-temperature mold, extending its service life and laying a solid foundation for subsequent core processes such as mold closing, aluminum liquid injection, and pressure holding. However, existing release agent spraying equipment for automotive non-ferrous metal die casting lacks adaptability and functionality, making it difficult to meet the requirements of clean, automated, and high-precision die casting. It exposes many problems throughout the process. When spraying the high-temperature mold after the previous die casting, the release agent easily vaporizes, generating steam and harmful gases. High-pressure spraying can also cause liquid splashing. Existing equipment lacks a splash-catching structure adapted to the die casting process, allowing pollutants to spread into the workshop, endangering personnel health, corroding equipment, and polluting the site. It may also affect mold closing accuracy and die casting stability. At the same time, the spray head lacks an automatic cleaning function. Repeated spraying of release agent during die casting can easily lead to scale buildup and nozzle blockage, resulting in uneven spraying in subsequent applications. This can cause problems such as casting adhesion and surface defects, requiring shutdown for cleaning, reducing production continuity, and increasing maintenance costs. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the existing technology has the disadvantages of low automation, difficulty in capturing sprayed pollutants, and easy pollution to the surrounding environment. To this end, we propose a high-efficiency spraying device for release agent in the mold cavity of a die casting machine.

[0005] To achieve the above objectives, this application employs the following high-efficiency spraying device for release agent inside the die-casting machine mold cavity, comprising a die-casting machine body, an aluminum liquid feeder installed inside the die-casting machine body, a mold installed on one side of the die-casting machine body, two gantry frames fixedly connected to the top of the die-casting machine body, two counterweight plates arranged between the two gantry frames, two covers arranged between the two counterweight plates, a plurality of spray heads arranged inside the covers, and water-absorbing sponges arranged inside the covers;

[0006] A die-casting pre-protection mechanism is installed between the two gantry frames to allow the counterweight plate and the cover to move down synchronously and align with the mold. Then, the two covers move outward to cover the outside of the mold, providing a closed protective space for pre-treatment before die-casting.

[0007] The die-casting intermittent self-curing mechanism is connected to the die-casting pre-protection mechanism so that the spray head deflects to a downward state when not in use, absorbs excess liquid after contacting the water-absorbing sponge, and keeps the spray head clean through friction cleaning during the deflection process.

[0008] The die casting waste liquid pretreatment mechanism is connected to the die casting pre-protection mechanism so that when the spray head is deflected to the working state, the water-absorbing sponge deflects counterclockwise to the rear side of the bottom of the spray head, so that the water-absorbing sponge itself is squeezed and squeezed out the liquid absorbed inside.

[0009] Preferably, the die-casting pre-protection mechanism includes:

[0010] A support frame is fixedly connected to the top of the die-casting machine body. An electric telescopic rod is fixedly connected to the top of the support frame. An electric telescopic rod is also fixedly connected to the top of the gantry frame. A vertical plate is slidably connected to the surface of the electric telescopic rod via a sliding groove. A limit plate is fixedly connected to the top of the counterweight plate. One side of the limit plate is slidably connected to the vertical plate via a slider. Two toothed frames are slidably connected to the middle of the limit plate, and are fixedly connected to each other via a long plate. The two toothed frames are fixedly connected to the output end of the electric telescopic rod via a long plate. A large gear is rotatably connected to one side of the counterweight plate. One side of the toothed frame... The cover is meshing with the surface of the large gear. Toothed plates are fixedly connected to both sides of the cover. The toothed plates distributed on the surface of the cover are installed in a staggered manner and mesh with the bottom and top of the large gear respectively. The two sides of the cover are slidably connected to the inner groove of the counterweight plate through sliders. Two guide shrouds are fixedly connected to the top of the cover. Air suction devices are fixedly connected to both sides of the top of the support. The air suction devices are connected to the top of the guide shrouds through telescopic hoses. A front liquid supply device is fixedly connected to one side of the cover. A liquid supply tank is fixedly connected to the top of the front liquid supply device. The front liquid supply device is connected to the spray head through multiple liquid supply pipes.

[0011] Preferably, the die-casting intermittent self-curing mechanism includes:

[0012] Four racks are distributed on both sides of the two covers and slidably connected to the top of the covers. A sliding rod is fixedly connected to the top of each rack. An inclined L-shaped groove is opened on both sides of the counterweight plate. The sliding rod is slidably connected to the inner wall of the inclined L-shaped groove. Three sets of support plates are fixedly connected to one side of the inner wall of the cover. A rotating plate is rotatably connected to two of the support plates. The spray head is fixedly connected to the bottom of the rotating plate. A small gear is fixedly connected to both sides of the rotating plate. One side of the rack meshes with the surface of the small gear.

[0013] Preferably, the die-casting waste liquid pretreatment mechanism includes:

[0014] A short plate is rotatably connected to one side of the short plate. Arc-shaped springs are fixedly connected to both sides of the bottom of the extrusion plate. The other end of each arc-shaped spring is fixedly connected to one side of the inner wall of the cover. An absorbent sponge is fixedly connected to the top of the extrusion plate. A long rod is fixedly connected to one side of the extrusion plate. A partition is provided between the two counterweight plates. Six inner plates are fixedly connected to both sides of the partition. An outer shell is slidably connected to the surface of each inner plate. One end of the outer shell has an oblique groove. Both ends of the long rod are slidably connected to the inner wall of the oblique groove. Three perforated plates are fixedly connected to the inner wall of the cover.

[0015] Preferably, the high-efficiency spraying device for release agent in the die-casting machine mold cavity further includes a pretreatment process waste liquid recovery mechanism, which is installed at the bottom of the cover to collect the liquid discharged from the spray head and the water-absorbing sponge during operation.

[0016] The waste liquid recovery mechanism of the pretreatment process:

[0017] A liquid collection shell is fixedly connected to the bottom between two counterweight plates. The bottom of the inner wall of the shell is a sloping structure. The bottom of the shell has a drainage groove. A liquid suction device is fixedly connected to one side of the counterweight plate. The two sides of the liquid suction device are connected to one side of the liquid collection shell through pipes. A partition is fixedly connected to the top of the liquid collection shell. Three flow guide shells are fixedly connected to one side of the shell. The three flow guide shells are connected to each other through pipes. The bottom of the bottom flow guide shell has an opening.

[0018] Preferably, a sealing gasket is fixedly connected to one side of the cover, and the sealing gasket is made of silicone.

[0019] Preferably, the inclined L-shaped groove is divided into a straight groove and an inclined groove. The slide rod first slides along the inclined L-shaped groove and then slides along the straight groove. The spray head deflects to the working state first, and then the extrusion plate deflects.

[0020] Preferably, the cover and the sealing gasket are disposed on the outside of the mold, the sealing gasket extends slightly to the inner diameter of the cover and has a gap with the two mold mating surfaces.

[0021] The technical effects and advantages of this invention are as follows:

[0022] In this invention, a hydraulic rod is used to push one mold to close to the other mold. Then, molten aluminum is injected into the cavity of the merged mold using an aluminum molten material feeder. After the molten aluminum cools and initially forms in the mold cavity, the mold is opened to remove the finished product. Before closing the mold, a release agent is sprayed onto the cavities of both molds using a spray nozzle. When the molten aluminum is injected into the mold, the release agent has a good isolation effect between the molten aluminum and the inner wall of the mold, thus effectively preventing direct contact and adhesion between the molten aluminum and the inner wall of the mold. When the mold is opened, the presence of the release agent allows the finished product to easily detach from the mold, thereby improving the demolding efficiency of the die casting, reducing mold wear and damage, and extending the service life of the mold.

[0023] In this invention, a pre-die-casting protective mechanism achieves "lifting-opening" linkage control. Relying on an electric telescopic rod to drive the meshing transmission of the gear frame, large gear, and gear plate, the counterweight plate and cover are first moved down synchronously to align with the mold. Then, the two side covers are driven to move outwards, forming a closed protective space with the silicone sealing gasket. This provides a sealed environment for the pre-molding demolding pretreatment and die-casting process. Simultaneously, a linked suction device extracts high-temperature steam and harmful gases generated during pretreatment in real time through a guide hood. Combined with the blocking effect of the inner wall of the cover, this achieves dual capture of steam and splashed liquid. This principle blocks the spillway of pollutants at the source, preventing harmful gases from endangering the health of operators and polluting the workshop environment, while also preventing splashed liquid from corroding the die-casting machine body, mold-closing mechanism, and surrounding precision auxiliary facilities. This ensures the positioning accuracy and operational stability of the die-casting machine during mold closing, laying a solid foundation for the smooth operation of subsequent die-casting processes and significantly improving the safety and cleanliness of the die-casting working environment.

[0024] In this invention, the sliding rod slides obliquely along the inclined L-shaped groove when the cover moves, driving the rack and pinion to mesh, which in turn drives the rotating plate and the release agent spray head to complete a 90-degree deflection. In the non-working state, the spray head is pressed downward against the water-absorbing sponge, and residual liquid is absorbed and the surface is cleaned through deflection friction. In the working state, the spray head automatically deflects to the horizontal working position, and after detaching from the water-absorbing sponge, the release agent is accurately sprayed. This achieves automatic switching between spray head cleaning and working states, avoiding spray head blockage caused by residual release agent without manual intervention. It ensures unobstructed release agent spraying channels and maintains uniform release agent coverage. The uniform release agent coating can effectively reduce the risk of castings sticking to the mold during die casting, ensuring smooth demolding of castings after mold closing and reducing the probability of downtime for cleaning due to mold sticking, reducing the maintenance cost of the die casting machine, and ensuring the continuity of die casting production.

[0025] In this invention, the die-casting auxiliary drainage mechanism is linked to the translational movement of the casing. Through the sliding cooperation of the long rod and the inclined groove, the extrusion plate drives the water-absorbing sponge to deflect. After the spray head switches to the working state, the water-absorbing sponge and the mesh plate form an extrusion, squeezing out the absorbed waste liquid. This design cleverly utilizes the synergy of the mechanism's movement to complete the automatic drainage of the water-absorbing sponge without an additional power source, ensuring that the water-absorbing sponge always maintains good water absorption and cleaning ability. At the same time, the squeezed-out waste liquid and the residual liquid on the inner wall of the casing converge through the guide structure, avoiding waste liquid contamination of the die-casting machine mold cavity and mold closing surface. This prevents the sealing performance and positioning accuracy from being affected by stains on the contact surface during mold closing, ensuring the stability of aluminum liquid injection during die casting and avoiding problems such as leakage and casting size deviation. In addition, the centralized collection of waste liquid realizes the resource reuse of the release agent, taking into account both environmental protection and the economy of die casting production. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0027] Figure 2 This is an exploded view of a portion of the die-casting pre-protection mechanism of the present invention;

[0028] Figure 3 This is a sectional view of the vertical cross-section of the die-casting pre-protection mechanism of the present invention;

[0029] Figure 4 This is an exploded view of the connection structure between the cover and the counterweight plate of the present invention;

[0030] Figure 5 This is a sectional view of the vertical cross-section structure of the casing of the present invention;

[0031] Figure 6 This is an exploded view of the back structure of the casing of the present invention;

[0032] Figure 7 This is a schematic diagram of the internal structure of the housing of the present invention;

[0033] Figure 8 For the present invention Figure 7 Enlarged view of the structure at point A in the middle;

[0034] Figure 9 This is an exploded view of the connection structure between the rotating plate and the spray head of the present invention;

[0035] Figure 10 This is an exploded view of the location and structure of the absorbent sponge and the extrusion plate of the present invention.

[0036] Legend: 1. Die-casting machine body; 2. Aluminum liquid feeder; 3. Mold; 4. Gantry frame; 5. Counterweight plate; 6. Cover; 7. Spray head; 8. Absorbent sponge; 9. Support; 10. Electric telescopic rod; 11. Vertical plate; 12. Limiting plate; 13. Gear frame; 14. Large gear; 15. Gear plate; 16. Flow guide; 17. Air suction device; 18. Front liquid supply device; 19. Rack; 20. Slide rod; 21. Inclined L-shaped groove; 22. Support plate; 23. Rotating plate; 24. Small gear; 25. Short plate; 26. Extrusion plate; 27. Arc spring; 28. Long rod; 29. ​​Partition plate; 30. Inner plate; 31. Outer shell; 32. Inclined groove; 33. Mesh plate; 34. Liquid collection shell; 35. Liquid suction device; 36. Sealing gasket; 37. Liquid supply tank; 38. Flow guide shell. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the invention and therefore only show the components relevant to the invention.

[0038] Example, refer to Figure 1 - Figure 10 As shown, the present invention provides a high-efficiency spraying device for release agent in the mold cavity of a die casting machine, including a die casting machine body 1, an aluminum liquid feeder 2 installed inside the die casting machine body 1, a mold 3 installed on one side of the die casting machine body 1, two gantry frames 4 fixedly connected to the top of the die casting machine body 1, two counterweight plates 5 arranged between the two gantry frames 4, two covers 6 arranged between the two counterweight plates 5, a plurality of spray heads 7 arranged inside the covers 6, and water-absorbing sponges 8 arranged inside the covers 6.

[0039] A die-casting front protection mechanism is installed between the two gantry frames 4.

[0040] Reference Figure 1 - Figure 7 As shown in this implementation scheme: the die-casting pre-protection mechanism includes:

[0041] Support 9 is fixedly connected to the top of the die-casting machine body 1. An electric telescopic rod 10 is fixedly connected to the top of support 9. An electric telescopic rod 10 is also fixedly connected to the top of the gantry frame 4. A vertical plate 11 is slidably connected to the surface of the electric telescopic rod 10 via a slide groove. A limit plate 12 is fixedly connected to the top of the counterweight plate 5. One side of the top of the limit plate 12 is slidably connected to the vertical plate 11 via a slider. Two toothed frames 13 are slidably connected to the middle of the limit plate 12, and they are fixedly connected by a long plate. The counterweight plate 5 is fixedly connected to the output end of the electric telescopic rod 10 via a long plate. A large gear 14 is rotatably connected to one side of the counterweight plate 5. One side of the gear frame 13 is meshed with the surface of the large gear 14. Toothed plates 15 are fixedly connected to both sides of the cover 6. The toothed plates 15 distributed on the surface of the cover 6 are installed in a staggered manner and are meshed with the bottom and top of the large gear 14 respectively. The two sides of the cover 6 are slidably connected to the inner groove of the counterweight plate 5 via sliders. Two guide shields 16 are fixedly connected to the top of the cover 6. The top of the bracket 9 is fixed on both sides. A suction device 17 is fixedly connected to the top of the guide shroud 16 via a telescopic hose. A front-end liquid supply device 18 is fixedly connected to one side of the shroud 6, and a liquid supply tank 37 is fixedly connected to the top of the front-end liquid supply device 18. The front-end liquid supply device 18 is connected to the spray head 7 via multiple liquid supply pipes. The liquid supply tank 37 stores the release agent and supplies it to the rack 19 in real time. The rack 19 is connected to the spray head 7, allowing the control terminal of this device to control the operation of the spray head 7 in real time to spray the release agent. Initial position The electric telescopic rod 10 first drives the toothed frame 13 to move downwards, but the toothed frame 13 slides on both sides in the middle of the limiting plate 12, and the limiting plate 12 slides inside the vertical plate 11. When the toothed frame 13 is driven downwards by the electric telescopic rod 10, the cover 6 and the limiting plate 12 will be affected by their own gravity and automatically slide downwards along the surface of the vertical plate 11. This makes it so that when the electric telescopic rod 10 pushes down the toothed frame 13, the toothed frame 13 will not drive the large gear 14 to rotate, but will drive the limiting plate 12 to slide downwards along the vertical plate 11 and drive the counterweight plate 5 to move downwards synchronously.

[0042] When the electric telescopic rod 10 pushes the toothed frame 13 to move the limiting plate 12 along the vertical plate 11 to the bottom and can no longer move down, the two covers 6 will be aligned with the molds 3 on both sides. Then the electric telescopic rod 10 continues to run and moves the toothed frame 13 down. At this time, the position of the limiting plate 12 is restricted and cannot move down. Then the electric telescopic rod 10 will push the toothed frame 13 down. At this time, the toothed frame 13 will slide down in a straight line along the middle of the limiting plate 12, so that the toothed frame 13 moves down and pushes the large gear 14 to rotate. Then the rotation of the large gear 14 drives the toothed plates 15 at the top and bottom to move outward, so that the two covers 6 move outward synchronously. During the process of the covers 6 moving outward through the toothed plates 15, the covers 6 will slide in the grooves inside the counterweight plate 5 through the sliders on both sides to restrict and guide the movement of the covers 6, so that the covers 6 can move stably.

[0043] As the casing 6 gradually moves to its outermost position, it covers the outside of the mold 3, thus enveloping the mold 3. Then, the spray head 7 begins spraying. When the release agent is sprayed onto the surface of the mold 3, the high temperature generated during the previous die-casting causes some of the release agent to evaporate, producing water vapor and harmful gases. After spraying the release agent once, the spray head 7 stops spraying, and the suction device 17 begins operating, connected to the guide shroud 16 via a telescopic hose. This allows the guide shroud 16 to absorb the water vapor and harmful gases inside the casing 6. The gas is sent to the suction device 17, which absorbs harmful gases and water vapor from near the mold 3. Then, the suction device 17 is connected to an external purification device, so that the gas absorbed by the suction device 17 can be discharged into the purification device. The purification device then treats these gases. After the gas is purified to meet the environmental emission standards, it is discharged into the external environment through the exhaust port of the external purification device. This effectively avoids the pollution of the workshop environment and the harm to the health of operators caused by water vapor and harmful gases generated during the mold release agent spraying process.

[0044] The sprayed liquid is vaporized at high temperature and then extracted by the suction device 17. The water vapor is far away from the surface of the mold 3 and will no longer condense into water droplets and fall on the working surface of the mold 3. The liquid splashed during the spraying process will splash onto the inner wall of the cover 6 and will not spray to the outside, so that the release agent splashed liquid will not affect the nearby environment and electrical facilities.

[0045] After the spray head 7 completes the application of the release agent, the electric telescopic rod 10 reverses its direction, causing the toothed frame 13 to rise. This causes the toothed frame 13 to move upward, driving the large gear 14 to rotate in the opposite direction. The rotation of the large gear 14 then drives the toothed plate 15 to move inward, bringing the two covers 6 closer together and away from their surfaces. The toothed frame 13 gradually rises with the electric telescopic rod 10, its top sliding along the bottom to the top of the limiting plate 12, so that the top of the toothed frame 13 is in contact with the top of the inner wall of the limiting plate 12. At this point, the covers 6 are completely retracted into the counterweight plate 5. The electric telescopic rod 10 continues to rise, causing the toothed frame 13 to drag the limiting plate 12 upward along the surface of the vertical plate 11, so that both the limiting plate 12 and the counterweight plate 5 move back to their initial positions, completely removing them from between the two molds 3, in preparation for the next spraying operation. Afterward, die casting will proceed.

[0046] Subsequently, the die-casting machine initiates the mold-closing procedure: one mold 3, driven by a hydraulic rod, smoothly approaches the other fixed mold. Through precise alignment of the mold-closing surfaces of mold 3, the molds are tightly closed, ensuring the sealing performance of the inner cavity of mold 3. After mold closure, the aluminum liquid feeder 2 starts operation, transporting the molten aluminum liquid through an insulated conveying pipe to the injection chamber of the die-casting machine. The injection mechanism injects the aluminum liquid quickly and smoothly into the cavity of mold 3 under high pressure. After the aluminum liquid fills the cavity, it is held under pressure and cooled to form the part. After the casting is formed, mold 3 is again driven by a hydraulic rod to separate, completing the separation of the two molds 3. During this process, the release fluid sprayed inside the mold 3 has a spacer layer with the injected aluminum liquid. After the aluminum liquid solidifies, it will not stick to the inner cavity of mold 3. After mold 3 is separated, the casting will be easier to remove from the inner wall of mold 3. After the casting is removed, the die-casting machine enters the preparation stage of the next work cycle.

[0047] The high-efficiency spraying device for release agent in the die-casting machine mold cavity also includes a die-casting intermittent self-curing mechanism, which is connected to the die-casting pre-protection mechanism.

[0048] Reference Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown in this implementation plan, the die-casting intermittent self-curing mechanism includes:

[0049] Four racks 19 are distributed on both sides of the two covers 6 and slidably connected to the top of the covers 6. A sliding rod 20 is fixedly connected to the top of each rack 19. An inclined L-shaped groove 21 is provided on both sides of the counterweight plate 5. The sliding rod 20 is slidably connected to the inner wall of the inclined L-shaped groove 21. Three sets of support plates 22 are fixedly connected to one side of the inner wall of the cover 6. A rotating plate 23 is rotatably connected to the two support plates 22. The spray head 7 is fixedly connected to the bottom of the rotating plate 23. Small gears 24 are fixedly connected to both sides of the rotating plate 23. One side of the rack 19 meshes with the surface of the small gear 24. When the electric telescopic rod 10 pushes the gear frame 13 downwards, causing the large gear 14 to rotate and the cover 6 to gradually move outwards, the outward movement of the cover 6 causes the rack 19 and the sliding rod 20 to move synchronously. The slide bar 20 slides along the inclined L-shaped groove 21. As the inclined L-shaped groove 21 moves obliquely, the slide bar 20 moves downward due to the constraint of the inclined L-shaped groove 21 as the cover 6 moves outward. This allows the rack 19 to mesh with the pinion 24 for transmission. The rotating plate 23 is constrained by the support plate 22 and can rotate. The rack 19 pushes the pinion 24 to rotate counterclockwise by 90 degrees, causing the pinion 24 and the spray head 7 to deflect from the downward state to the horizontal state. During the deflection process, the spray head 7 detaches from the surface of the water-absorbing sponge 8. The spray head 7 rubs against the water-absorbing sponge 8 to clean and absorb the water droplets and dirt drawn vertically downward from the spray head 7. This causes the spray head 7 to deflect towards the working surface of the mold 3 covered by the cover 6. Then the spray head 7 starts to spray the release agent.

[0050] After the spraying is completed, the two covers 6 begin to move inward, and the rotating plate 23 and the spray head 7 deflect downward 90 degrees to the initial position. During this process, the spray head 7 comes into contact with the surface of the water-absorbing sponge 8 again, and the output surface of the spray head 7 comes into contact with the surface of the water-absorbing sponge 8 to rub and wipe, so as to absorb the water droplets remaining after the use of the spray head 7 and wipe the surface used by the spray head 7. This prevents the residual release agent water droplets from accumulating and clogging the spray head 7 after long-term use, and prepares it for the next spraying operation. The entire device achieves efficient spraying of release agent and automatic cleaning of the spray head 7 through a series of precise mechanical movements, which greatly improves the efficiency and quality of release agent spraying in the die-casting machine mold cavity, reduces manual intervention and downtime, reduces production costs, and improves production efficiency.

[0051] The high-efficiency spraying device for release agent in the die-casting machine mold cavity also includes a die-casting waste liquid pretreatment mechanism, which is connected to the die-casting pre-protection mechanism.

[0052] Reference Figure 5 - Figure 10 As shown in this implementation plan, the die-casting waste liquid pretreatment unit includes:

[0053] A short plate 25 is rotatably connected to one side of a pressing plate 26. Arc springs 27 are fixedly connected to both sides of the bottom of the pressing plate 26. The other end of each arc spring 27 is fixedly connected to one side of the inner wall of the cover 6. An absorbent sponge 8 is fixedly connected to the top of the pressing plate 26. A long rod 28 is fixedly connected to one side of the pressing plate 26. A partition 29 is provided between two counterweight plates 5. Six inner plates 30 are fixedly connected to both sides of the partition 29. An outer shell 31 is slidably connected to the surface of the inner plates 30. One end of the outer shell 31 has an inclined groove 32. Both ends of the long rod 28 are slidably connected to the inner wall of the inclined groove 32. Three perforated plates 33 are fixedly connected to the inner wall of the cover 6. During the above process, when the cover 6 moves outward, the short plate 25 and the pressing plate 26 move outward synchronously with the cover 6. The long rod 28, embedded in the inner wall of the inclined groove 32, drags the outer shell 31 along the surface of the inner plates 30. When the outer shell 31 slides along the surface of the inner plate 30 to its maximum extent and can no longer slide, the position of the outer shell 31 will be restricted. At this time, the cover 6 continues to move outward, so that the outer shell 31 is gradually pulled out from one side of the cover 6. This makes the outer shell 31 move backward when the cover 6 moves forward. When the outer shell 31 is gradually pulled out from the cover 6, it will guide the long rod 28 through the inclined groove 32, so that the long rod 28 gradually slides from the bottom of the inclined groove 32 to the top of the inclined groove 32, so as to realize the upward deflection of the extrusion plate 26 and the long rod 28. During the process, the extrusion plate 26 rotates along one side of the short plate 25, so that the extrusion plate 26 deflects and folds downward. Since the water-absorbing sponge 8 is placed on the surface of the extrusion plate 26, after the extrusion plate 26 deflects, the water-absorbing sponge 8 will contact the mesh plate 33, so that the water-absorbing sponge 8 is squeezed by the mesh plate 33 and the extrusion plate 26, thereby squeezing out the liquid absorbed by the water-absorbing sponge 8.

[0054] During the deflection of the extrusion plate 26, the arc spring 27 will store force. When the coating is completed, the cover 6 gradually moves away from the surface of the mold 3. The inward movement of the cover 6 will cause the outer shell 31 to gradually slide back to the initial position. The outer shell 31 slides from the innermost side of the cover 6 to the middle area of ​​the cover 6. This makes the arc spring 27 no longer restricted, and it rebounds and pulls the extrusion plate 26 and the water-absorbing sponge 8 to deflect to a horizontal state first, so as to clean and absorb liquid for the subsequent deflection of the spray head 7.

[0055] To ensure that the absorbent sponge 8 has high water absorption performance, there is no need for manual periodic squeezing to remove the water absorbed by the absorbent sponge 8. This efficient and automated operation greatly improves the working efficiency and stability of the release agent spraying device, reduces manual intervention, and lowers labor intensity.

[0056] The high-efficiency spraying device for release agent in the die-casting machine mold cavity also includes a pretreatment process waste liquid recovery mechanism, which is installed at the bottom of the cover 6.

[0057] Reference Figure 4 and Figure 5 As shown in this implementation plan: Pretreatment process waste liquid recovery mechanism:

[0058] A liquid collection shell 34 is fixedly connected to the bottom between two counterweight plates 5. The bottom of the inner wall of the cover 6 is a sloping structure with a groove at the bottom. A liquid suction device 35 is fixedly connected to one side of the counterweight plate 5. The two sides of the liquid suction device 35 are connected to one side of the liquid collection shell 34 through pipes. A partition plate 29 is fixedly connected to the top of the liquid collection shell 34. Three flow guide shells 38 are fixedly connected to one side of the cover 6. The three flow guide shells 38 are connected to each other through pipes. The bottom of the bottom flow guide shell 38 is open. When the squeezing plate 26 deflects and the mesh is open... When the plates 33 squeeze the water-absorbing sponge 8, the water-absorbing sponge 8 is restricted by the baffles on both sides of the short plate 25 and the squeezing plate 26. The bottom of the water-absorbing sponge 8 after deflection is blocked by the short plate 25. The downward flow of water will be blocked by the short plate 25 and the squeezing plate 26. It can only flow through the mesh plate 33 to the back of the cover 6, and then flow into the interior of the guide shell 38. The multiple guide shells 38 are connected. The water inside the guide shell 38 will flow downward and be discharged downward through the bottom guide shell 38, dripping into the interior of the liquid accumulation shell 34.

[0059] During the spraying process, the liquid adsorbed on the inner wall of the housing 6 will gradually flow along the side of the housing 6 to the bottom of the inner diameter of the housing 6. The liquid inside the housing 6 will be guided by the oblique guide at the bottom of the inner diameter of the housing 6, so that the liquid inside the housing 6 will drip into the liquid collection shell 34 through the drain at the bottom of the housing 6. The liquid collection shell 34 will collect the liquid. The liquid suction device 35 is connected to the liquid collection shell 34 through a pipe. The liquid suction device 35 can absorb the liquid accumulated in the liquid collection shell 34 by a built-in water pump, and concentrate the liquid inside the liquid suction device 35. The staff will then open the liquid suction device 35 periodically to take out the absorbed liquid, so that the waste liquid generated by the spraying can be recycled and treated. This will not only avoid the pollution of the environment by the waste liquid, but also realize the recycling of resources, reduce production costs, and avoid the environmental pollution caused by the spraying waste liquid.

[0060] Reference Figure 4 , Figure 5 and Figure 7 As shown in this embodiment: a sealing gasket 36 is fixedly connected to one side of the cover 6. The sealing gasket 36 is made of silicone. The silicone material has good elasticity and can play a buffering role when the cover 6 contacts the mold 3, effectively reducing the collision and wear between the two, reducing the wear rate of the equipment, and thus extending the service life of the overall equipment.

[0061] Reference Figure 4As shown in this embodiment: the inclined L-shaped groove 21 is divided into a straight groove and an inclined groove. The slide rod 20 first slides along the inclined groove of the inclined L-shaped groove 21 and then slides along the straight groove. The spray head 7 deflects to the working state first, and then the extrusion plate 26 deflects. When the cover 6 moves to align with the mold 3 and moves outward, the initial half of the lateral movement of the cover 6 causes the slide rod 20 to slide along the inclined groove of the inclined L-shaped groove 21. The second half of the lateral movement will slide along the straight groove at the bottom of the inclined groove of the inclined L-shaped groove 21. This causes the slide rod 20 and the rack 19 to rise first when the cover 6 begins to move laterally. Then the slide rod 20 slides along the inclined L-shaped groove 21 to maintain its position.

[0062] When the front section moves significantly, the outer shell 31 slides along the surface of the inner plate 30 to the outermost side, and the outer shell 31 will be unable to slide outward along the surface of the inner plate 30. When the rear section of the cover 6 moves slightly laterally, the outer shell 31 will drive the long rod 28 to deflect downward through the inclined groove 32 to squeeze and drain the water-absorbing sponge 8.

[0063] This causes the cover 6 to move laterally outward, first causing the spray head 7 to deflect to the working state, and then causing the extrusion plate 26 and the water-absorbing sponge 8 to deflect to a clearance state for extrusion and drainage. This avoids the water-absorbing sponge 8 being placed at the bottom of the spray head 7 during operation, which would otherwise absorb the water dripping from the spray head 7. The deflection design of the extrusion plate 26 also cleverly avoids the running trajectory of the spray head 7, preventing collisions between the two during movement and ensuring the overall stability and safety of the device.

[0064] Reference Figure 4 , Figure 5 and Figure 7 As shown, in this embodiment: the cover 6 and the sealing gasket 36 are installed on the outside of the mold 3. The sealing gasket 36 extends slightly to the inner diameter of the cover 6 and has a gap with the mating surfaces of the two molds 3. When the cover 6 approaches the surface of the mold 3, the mating surfaces of the cover 6 and the mold 3 will contact each other through the sealing gasket 36. The design of the sealing gasket 36 being slightly smaller than the inner diameter of the cover 6 ensures a good seal at the contact point between the cover 6 and the mold 3, preventing the release agent from leaking out during the spraying process. This guarantees the stability of the spraying process and the effective use of the release agent. For example... Figure 2 As shown, the numbered part of mold 3 is the contact point between mold 3 and sealing gasket 36. This makes the die-casting part of mold 3 completely embedded in the inner wall of cover 6, and the outer side of cover 6 will not contact the mold mating surface of mold 3, so as to avoid the sealing gasket 36 absorbing dirt after repeated use and causing contamination to the mold mating surface of mold 3.

[0065] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-efficiency spraying device for release agent in the mold cavity of a die-casting machine, comprising a die-casting machine body (1), characterized in that: An aluminum liquid feeder (2) is installed inside the die casting machine body (1). A mold (3) is installed on one side of the die casting machine body (1). Two gantry frames (4) are fixedly connected to the top of the die casting machine body (1). Two counterweight plates (5) are arranged between the two gantry frames (4). Two covers (6) are arranged between the two counterweight plates (5). Several spray nozzles (7) are arranged inside the covers (6). Water-absorbing sponges (8) are arranged inside the covers (6). A die-casting pre-protection mechanism is installed between the two gantry frames (4) to make the counterweight plate (5) and the cover (6) move down synchronously to align with the mold (3), and then the two covers (6) move outward to cover the outside of the mold (3) to provide a closed protective space for pre-treatment before die-casting; The die-casting intermittent self-curing mechanism is connected to the die-casting pre-protection mechanism so that the spray head (7) is deflected to the downward state when not in use, and absorbs excess liquid after contacting the water-absorbing sponge (8), and keeps the spray head (7) clean through friction cleaning during the deflection process. The die casting waste liquid pretreatment mechanism is connected to the die casting pre-protection mechanism so that when the spray head (7) is deflected to the working state, the water-absorbing sponge (8) is deflected counterclockwise to the rear side of the bottom of the spray head (7), so that the water-absorbing sponge (8) itself is squeezed and squeezed out the liquid absorbed inside.

2. The high-efficiency spraying device for release agent in the mold cavity of a die-casting machine according to claim 1, characterized in that: The die-casting pre-protection mechanism includes: A bracket (9) is fixedly connected to the top of the die-casting machine body (1). An electric telescopic rod (10) is fixedly connected to the top of the bracket (9). An electric telescopic rod (10) is fixedly connected to the top of the gantry frame (4). A vertical plate (11) is slidably connected to the surface of the electric telescopic rod (10) through a sliding groove. A limit plate (12) is fixedly connected to the top of the counterweight plate (5). One side of the top of the limit plate (12) is slidably connected to the vertical plate (11) through a slider. A toothed frame (13) is slidably connected to the middle of the limit plate (12). There are two toothed frames (13), which are fixedly connected to each other through a long plate. The two toothed frames (13) are fixedly connected to the output end of the electric telescopic rod (10) through a long plate. A large gear (14) is rotatably connected to one side of the counterweight plate (5). One side of the cover (6) is meshed with the surface of the large gear (14). Both sides of the cover (6) are fixedly connected with toothed plates (15). The toothed plates (15) distributed on the surface of the cover (6) are installed in a staggered manner and are meshed with the bottom and top of the large gear (14). The two sides of the cover (6) are slidably connected to the sliding groove on the inner side of the counterweight plate (5) through a slider. The top of the cover (6) is fixedly connected with two flow guides (16). Both sides of the top of the bracket (9) are fixedly connected with air suction devices (17). The air suction devices (17) are connected to the top of the flow guides (16) through a telescopic hose. One side of the cover (6) is fixedly connected with a front liquid supply device (18). The top of the front liquid supply device (18) is fixedly connected with a liquid supply tank (37). The front liquid supply device (18) is connected to the spray head (7) through multiple liquid supply pipes.

3. The high-efficiency spraying device for release agent in the mold cavity of a die-casting machine according to claim 2, characterized in that: The die-casting intermittent self-curing mechanism includes: Four racks (19) are distributed on both sides of the two covers (6) and slidably connected to the top of the covers (6). A slide rod (20) is fixedly connected to the top of the racks (19). An oblique L-shaped groove (21) is opened on both sides of the counterweight plate (5). The slide rod (20) is slidably connected to the inner wall of the oblique L-shaped groove (21). Three sets of support plates (22) are fixedly connected to one side of the inner wall of the cover (6). A rotating plate (23) is rotatably connected to the two support plates (22). The spray head (7) is fixedly connected to the bottom of the rotating plate (23). A small gear (24) is fixedly connected to both sides of the rotating plate (23). One side of the rack (19) meshes with the surface of the small gear (24).

4. The high-efficiency spraying device for release agent in the mold cavity of a die-casting machine according to claim 3, characterized in that: The die-casting waste liquid pretreatment mechanism includes: A short plate (25) is rotatably connected to one side of a pressing plate (26). An arc spring (27) is fixedly connected to both sides of the bottom of the pressing plate (26). The other end of the arc spring (27) is fixedly connected to one side of the inner wall of the cover (6). The water-absorbing sponge (8) is fixedly connected to the top of the pressing plate (26). A long rod (28) is fixedly connected to one side of the pressing plate (26). A partition (29) is provided between the two counterweight plates (5). Six inner plates (30) are fixedly connected to both sides of the partition (29). An outer shell (31) is slidably connected to the surface of the inner plate (30). An inclined groove (32) is opened at one end of the outer shell (31). The two ends of the long rod (28) are slidably connected to the inner wall of the inclined groove (32). Three mesh plates (33) are fixedly connected to the inner wall of the cover (6).

5. The high-efficiency spraying device for release agent in the mold cavity of a die-casting machine according to claim 4, characterized in that: The high-efficiency spraying device for release agent in the die casting machine mold cavity also includes a pretreatment process waste liquid recovery mechanism, which is installed at the bottom of the cover (6) to collect the liquid discharged by the spray head (7) and the water-absorbing sponge (8). The waste liquid recovery mechanism of the pretreatment process: The liquid collection shell (34) is fixedly connected to the bottom between two counterweight plates (5). The bottom of the inner wall of the cover (6) is a sloping structure. The bottom of the cover (6) has a trough. A liquid suction device (35) is fixedly connected to one side of the counterweight plate (5). The two sides of the liquid suction device (35) are connected to one side of the liquid collection shell (34) through pipes. The partition plate (29) is fixedly connected to the top of the liquid collection shell (34). Three flow guide shells (38) are fixedly connected to one side of the cover (6). The three flow guide shells (38) are connected to each other through pipes. The bottom of the bottom flow guide shell (38) is open.

6. A high-efficiency spraying device for release agent in the mold cavity of a die-casting machine according to any one of claims 1-5, characterized in that: A sealing gasket (36) is fixedly connected to one side of the cover (6), and the sealing gasket (36) is made of silicone.

7. The high-efficiency spraying device for release agent in the mold cavity of a die-casting machine according to claim 3, characterized in that: The inclined L-shaped groove (21) is divided into a straight groove and an inclined groove. The slide bar (20) first slides along the inclined groove (21) and then slides along the straight groove. The spray head (7) first deflects to the working state and then the extrusion plate (26) deflects.

8. The high-efficiency spraying device for release agent in the mold cavity of a die-casting machine according to claim 6, characterized in that: The cover (6) and the sealing gasket (36) are placed on the outside of the mold (3), and the sealing gasket (36) extends slightly to the inner diameter of the cover (6) and has a gap with the mating surfaces of the two molds (3).

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