Spray head for spraying release agent by robot

Abstract

The invention relates to the technical field of spraying equipment, and discloses a spray head for spraying a release agent by a robot, which comprises a valve body with a cylindrical structure, a main body in threaded connection with the valve body and a clamp fixed on one side of the main body, and further comprises a rubber liner tube mounted in the valve body in an interference manner, a rubber lining pipe is arranged in the valve body, a liquid storage cavity used for containing a release agent is formed in the valve body, a supporting assembly capable of filtering large-particle matter in the release agent is installed in the liquid storage cavity, the supporting assembly can also support the rubber lining pipe, the valve element is movably connected into the rubber lining pipe in a sleeved mode, and two spiral grooves used for discharging the release agent are formed in the surface of the valve element. According to the spray head for spraying the release agent by the robot, the valve core capable of sliding is adopted, and the open spray holes are formed in the valve core, so that a worker can conveniently and quickly clean blockages, and a cooling measure can be taken for the spray head, so that the release agent is prevented from being blocked at the spray head.

Description

Technical Field

[0001] This invention relates to the field of spraying equipment technology, specifically to a nozzle for robotic spraying of release agent. Background Technology

[0002] In high-temperature manufacturing scenarios such as die casting and composite material molding, the surface temperature of the mold often reaches 200-400℃. Due to heat conduction and radiation, the temperature of the working area at the front end of the traditional nozzle can rise to a critical threshold of more than 65℃, triggering an irreversible cross-linking reaction of the silicone oil component in the release agent. The main problem is that a free radical chain reaction is triggered at the nozzle orifice, leading to high-temperature polymerization and clogging of the orifice. Currently, the solution to the high-temperature polymerization effect is mostly passive heat insulation. However, the use of alumina ceramic coating only delays heat transfer by 2-3 minutes. When the mold temperature is >300℃, the nozzle tip will still exceed the 65℃ threshold, and the axial temperature gradient intensifies the deposition of gel at the nozzle outlet. Designing a constant temperature cooling system and using compressed air cooling causes local temperature fluctuations of ±15℃. When repeatedly crossing the 60-80℃ range, the silicone oil undergoes a vicious cycle of gelation-partial depolymerization-regelation, reducing the porosity of the blockage by 40%. In addition, chemical additives are used. Adding antioxidants (such as BHT) only delays the gelation time by 30% and cannot block the catalytic pathway of metal ions. Moreover, the additives themselves carbonize at high temperatures, forming new sources of blockage.

[0003] Currently, traditional nozzles inevitably cause silicone oil-based mold release agents to gel and clog the nozzles and internal channels due to the high-temperature polymerization effect. Because the closed microporous structure of traditional nozzles is designed to be difficult to clean after clogging, and the cleaning speed is slow, it takes up production time. Summary of the Invention

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a nozzle for robotic application of release agents, which solves the problems of difficult cleaning and slow cleaning speed caused by the closed microporous structure of traditional nozzles, which consumes production time.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a nozzle for robotically spraying release agent, comprising a cylindrical valve body, a main body threadedly connected to the valve body, and a clamp fixed to one side of the main body, and further comprising: A rubber liner is interference-fitted into the valve body and forms a reservoir cavity within the valve body for containing the release agent. A support component is installed in the reservoir cavity to filter large particles in the release agent. The support component also supports the rubber liner. The valve core is movably sleeved inside the rubber liner and has two spiral grooves on its surface for discharging the release agent. The spiral grooves and the inner side of the rubber liner form two spiral channels, so that the release agent forms two symmetrical spiral mists when it is sprayed out, thereby allowing the atomized release agent to be sprayed into the cavity of the mold along an inclined path. The drive mechanism is equipped with a fixed frame and is installed in the valve body through the fixed frame. It drives the valve core to extend and retract inside the rubber liner through electromagnetic force to control the flow of release agent. When spraying stops, the open spiral groove on the valve core is exposed outside the rubber liner, which facilitates quick cleaning of the release agent on the valve core. The air distribution ring is sleeved between the main body and the valve body to form an air distribution chamber. The air distribution ring is fixed to the main body by bolts. Multiple air distribution channels on the air distribution ring are used to blow the atomized release agent. At the same time, the flowing air can cool the nozzle and prevent the release agent from being blocked due to high temperature polymerization effect in a high temperature environment. The main body is fixedly connected to a main air nozzle that communicates with the air distribution chamber, and the valve body is fixedly connected to a release agent delivery nozzle that communicates with the liquid storage chamber.

[0006] As a further description of the above technical solution, a sealing part is provided at one end of the rubber liner, and an extension part is provided on one side of the sealing part. The valve body is a tubular structure and is provided with a first connecting platform that is threadedly connected to the main body. The release agent delivery nozzle is installed on the first connecting platform. A second connecting platform is provided at one end of the first connecting platform. The sealing part is attached to the inner side of the second connecting platform. The extension part is in contact with the inner side of the first connecting platform. The fixing frame clamps the sealing part and is fixedly connected to the inner side of the second connecting platform by bolts. The support assembly is a support ring, which is used to support the tube body, extension part and sealing part by being sleeved on the side wall of the rubber liner. A guide pipe communicating with the liquid storage chamber is fixedly connected to one side of the first connecting platform, and the other end of the guide pipe is fixedly connected to the side wall of the valve body. A flow passage communicating with one end of the guide pipe is opened at one end of the rubber liner.

[0007] As a further description of the above technical solution, the support assembly includes a flared portion disposed at one end of the support ring, the flared portion being sleeved on the inner side of the first connecting platform, and a bent portion disposed at the other end of the support ring, the bent portion being sleeved between the extension portion and the rubber liner so that the extension portion can tightly contact the inner side of the first connecting platform for sealing, and a plurality of matrix-arranged liquid inlet holes are provided on the flared portion, and a rectangular drain hole is provided on the side symmetrical to the liquid inlet holes.

[0008] As a further description of the above technical solution, a drain nozzle is threadedly connected to the side wall of the first connecting platform at the position corresponding to the mold release agent delivery nozzle. A horizontal plate is fixedly connected inside the first connecting platform, and a rubber block with a frustum structure is fixedly connected to the lower end of the horizontal plate. The drain nozzle is coaxially arranged with the frustum and located below the rubber block.

[0009] As a further description of the above technical solution, the braking mechanism includes an electromagnet. The electromagnet is fixed to one side of the fixing frame via a first fixing part. One end of the valve core passes through the fixing frame and is fixedly connected to a strong magnetic ring. A limit frame is provided on one side of the fixing frame. Two buffer rubber blocks are fixedly connected to one side of the limit frame. A blind hole is opened at one end of the valve core. A return spring is sleeved in the blind hole. One end of the return spring extends out of the blind hole and contacts one side of the limit frame. A sealing end cap that contacts one end of the electromagnet is bolted to one end of the valve body. The sealing end cap is provided with a through hole through which the power line of the electromagnet passes, and the through hole is sealed.

[0010] As a further description of the above technical solution, one end of the blind hole is provided with a plurality of direct current air holes along the axial direction, and the plurality of direct current air holes are all connected to one side of the valve core. An auxiliary air nozzle for supplying airflow to the direct current air holes is fixedly connected to the side wall of the valve body.

[0011] As a further description of the above technical solution, the side wall of the valve core is provided with a flow limiting part, the inner side of the rubber liner is provided with a flow limiting platform that cooperates with the flow limiting part, and the side wall of the valve core is embedded with multiple sealing rings.

[0012] As a further description of the above technical solution, the valve ring and the valve body are fitted with a plurality of exhaust grooves at an angle, and the side wall of the valve ring is provided with a plurality of circumferentially distributed first and second oblique holes, the inclination direction of the first oblique holes being opposite to the direction of the exhaust grooves and the second oblique holes.

[0013] As a further description of the above technical solution, an isolation cover is fixedly connected between the first oblique hole and the second oblique hole. The end of the isolation cover away from the valve ring is provided with a constriction portion. A diverter pipe is fixedly connected between the first oblique hole and the exhaust groove. The length of the diverter pipe is less than that of the isolation cover. A guide cover is provided at one end of the main body.

[0014] As a further description of the above technical solution, one end of the valve body is provided with a plurality of flow guide holes, the wall of the flow guide holes is provided with a circular hole communicating with the interior of the main body, the wall of the flow guide holes is provided with a micro-spray hole communicating with the interior of the valve body, one end of the valve body is fixedly connected to a pressure ring by bolts, and one end of the pressure ring is fixedly connected to a rubber plug for sealing the flow guide holes.

[0015] (III) Beneficial Effects Compared with the prior art, the present invention provides a nozzle for robotic application of release agent, which has the following beneficial effects: 1. Design an independent air distribution ring structure. The air distribution ring is sleeved between the main body and the valve body to form an air distribution chamber. The air distribution ring is fixed to the main body with bolts. Multiple air distribution channels on the air distribution ring are used to blow the atomized release agent. At the same time, the flowing air can cool the nozzle and prevent the release agent from rapidly undergoing high-temperature polymerization effect and causing blockage in a high-temperature environment.

[0016] 2. Multiple direct-flow air holes are provided along the axial direction at one end of the blind hole. All of these direct-flow air holes are connected to one side of the valve core. An auxiliary air nozzle is fixedly connected to the side wall of the valve body to deliver airflow to the direct-flow air holes. The temperature of the valve core can be directly controlled by the direct-flow airflow, so that the temperature of the valve core and the nozzle can be reduced in time, avoiding the high-temperature polymerization effect of the release agent under high temperature environment. At the same time, the direct-flow airflow can also be blown directly into the mold cavity to assist the mold in controlling the temperature. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a spray nozzle for applying a release agent to a robot, as proposed in this invention. Figure 2 A cross-sectional view of a spray nozzle for applying a release agent to a robot, as proposed in this invention. Figure 1 ; Figure 3 A cross-sectional view of a spray nozzle for applying a release agent to a robot, as proposed in this invention. Figure 2 ; Figure 4 This is a schematic diagram of the valve body in a spray nozzle for applying a release agent to a robot, as proposed in this invention. Figure 5 This is a schematic diagram of the main body of the nozzle for applying a release agent to a robot, as proposed in this invention. Figure 6 This is a schematic diagram of the structure of the rubber liner support assembly in the nozzle of a robot spraying release agent proposed in this invention. Figure 1 ; Figure 7 This is a schematic diagram of the structure of the rubber liner and support assembly in the nozzle of a robot spraying release agent proposed in this invention. Figure 2 ; Figure 8 This is a schematic diagram of the support component in the nozzle of a robot spraying release agent according to the present invention; Figure 9 This is a schematic diagram of the air distribution ring, flow divider, and isolation cover in a nozzle for spraying release agent by a robot according to the present invention; Figure 10 This is a schematic diagram of the valve core in a spray nozzle for applying a release agent to a robot, as proposed in this invention. Figure 11 This is a schematic diagram of the fixing frame in the nozzle of a robot spraying release agent according to the present invention; Figure 12 This is a schematic diagram of the valve core, fixing frame, and electromagnet in a spray nozzle for spraying release agent by a robot according to the present invention; Figure 13 The present invention proposes a nozzle for spraying a release agent for robots. Figure 4 Enlarged view of point A in the middle.

[0018] In the diagram: 1. Main body; 2. Flow guide; 3. Fixture; 4. Valve body; 5. Auxiliary air nozzle; 6. Release agent delivery nozzle; 7. Main air nozzle; 8. Sealing end cap; 9. Electromagnet; 10. Fixing frame; 11. Liquid storage chamber; 12. Strong magnetic ring; 13. Valve core; 14. Drain nozzle; 15. Sealing ring; 16. Flow limiting part; 17. Flow passage; 18. Spiral groove; 19. Gas distribution chamber; 20. Rubber liner; 21. Pressure ring; 22. Diverter pipe; 23. Constriction part; 24. Isolation cover; 25. Gas distribution ring; 26. Flow guide pipe; 27. Support assembly; 28. Flow guide hole; 29. ​​Sealing part; 30. Bending part; 31. Extension part; 32. First oblique hole; 33. Second oblique hole; 34. Exhaust groove; 35. Direct air hole; 36. Buffer rubber block; 37. Return spring; 38. Rubber block. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figure 1-13 As shown, the present invention provides a nozzle for spraying release agent by a robot, comprising a cylindrical valve body 4, a main body 1 threadedly connected to the valve body 4, and a clamp 3 fixed to one side of the main body 1, and further comprising: The rubber liner 20 is interference-fitted into the valve body 4 and forms a reservoir 11 for containing the release agent in the valve body 4. The reservoir 11 is equipped with a support component 27 that can filter large particles in the release agent. The support component 27 can also support the rubber liner 20. The valve core 13 is movably sleeved inside the rubber liner 20 and has two spiral grooves 18 on its surface for discharging the release agent. The spiral grooves 18 and the inner side of the rubber liner 20 form two spiral channels so that the release agent forms two symmetrical spiral mists when it is sprayed out, thereby allowing the atomized release agent to be sprayed into the cavity of the mold along an inclined path. The drive mechanism is equipped with a fixed frame 10. The drive mechanism is installed in the valve body 4 through the fixed frame 10. The valve core 13 is driven by electromagnetic force to extend and retract in the rubber liner 20 to control the flow of the release agent. When spraying stops, the open spiral groove 18 on the valve core 13 is exposed outside the rubber liner 20, which facilitates quick cleaning of the release agent on the valve core 13. The above solution solves the problem of traditional nozzles being prone to clogging at high temperatures due to the high-temperature polymerization of release agent, leading to frequent downtime and maintenance. The designed sliding valve core with open nozzles allows for quick and easy cleaning of blockages, and also provides cooling measures to prevent release agent from clogging the nozzle.

[0021] The specific technical solution to solve the high temperature of the nozzle is to design an independent air distribution ring 25 structure. The air distribution ring 25 is fitted between the main body 1 and the valve body 4 to form an air distribution chamber 19. The air distribution ring 25 is fixed to the main body 1 by bolts. Multiple air distribution channels set on the air distribution ring 25 are used to blow the atomized release agent. At the same time, the flowing air can cool the nozzle and prevent the release agent from undergoing high-temperature polymerization effect and causing blockage in a high-temperature environment. The main body 1 is fixedly connected to a main air nozzle 7 that communicates with the air distribution chamber 19, and the valve body 4 is fixedly connected to a release agent delivery nozzle 6 that communicates with the liquid storage chamber 11.

[0022] Specifically, such as Figure 2 , Figure 3 , Figures 6-8 As shown, the core component is designed as follows: a sealing part 29 is provided at one end of the rubber liner 20, and an extension part 31 is provided on one side of the sealing part 29. The extension part 31 is mainly used to seal between the rubber liner 20 and the valve body 4. The valve body 4 is a tubular structure and is provided with a first connecting platform that is threaded to the main body 1. The release agent delivery nozzle 6 is installed on the first connecting platform. A second connecting platform is provided at one end of the first connecting platform, thus forming a structure of valve body 4 with multiple different diameters. The sealing part 29 is attached to the inner side of the second connecting platform, and the extension part 31 contacts the inner side of the first connecting platform. If necessary, it is installed by interference fit. The fixing frame 10 clamps the sealing part 29 and is fixedly connected to the inner side of the second connecting platform by bolts. In this way, the fixing frame 10 increases the pressure on the sealing part 29, so that the release agent in the liquid storage chamber 11 will not leak from the sealing part 29. The support component 27 is a support ring. The support ring is sleeved on the side wall of the rubber liner 20 to support the tube body, the extension part 31 and the sealing part 29. A guide pipe 26 communicating with the liquid storage chamber 11 is fixedly connected to one side of the first connecting platform. The other end of the guide pipe 26 is fixedly connected to the side wall of the valve body 4. The external guide pipe 26 design can reduce the processing difficulty of the valve core 13 and the valve body 4. One end of the rubber liner 20 is provided with a flow passage 17 communicating with one end of the guide pipe 26. like Figure 2 The diagram shows the working state of the nozzle. Under the action of the drive mechanism, the valve core 13 retracts into the rubber liner 20. At this time, the two spiral grooves 18 on the valve core 13 are also connected to the inside of the rubber liner 20. The release agent enters the liquid storage chamber 11 through the release agent delivery nozzle 6, and is then transported to the flow channel 17 through the guide pipe 26. Subsequently, the release agent is sprayed out from the two spiral grooves 18 along the spiral path, and then blown by the multiple air distribution channels configured through the air distribution ring 25. In this way, the release agent can be fully atomized and blown. The release agent atomized along the spiral path contacts the mold cavity along the spiral path. Unlike the existing nozzles that use straight delivery and cause airflow rebound, this can effectively reduce the escape of the release agent, so that the release agent can fully adhere to the mold cavity and also expand the spraying area.

[0023] like Figures 6-8 The support assembly 27 provided on the rubber liner 20 includes a flared portion at one end of the support ring, which is fitted inside the first connecting platform. The other end of the support ring is provided with a bent portion 30. The support ring, the flared portion, and the bent portion 30 together form a trumpet-shaped structure, which can support the rubber liner 20 in the liquid storage cavity and increase its pressure resistance. The bent portion 30 is fitted between the extension portion 31 and the rubber liner 20 so that the extension portion 31 can be tightly sealed to the inside of the first connecting platform. The flared portion has multiple matrix-arranged liquid inlet holes, and a rectangular drain hole is provided on the side symmetrical to the liquid inlet holes.

[0024] As attached Figure 2 and attached Figure 3 As shown, the mold release agent entering the storage chamber 11 from the mold release agent delivery nozzle 6 preferentially passes through the closer inlet hole and then enters the guide pipe 26. At this time, the funnel-shaped support component can also intercept large particles of impurities in the mold release agent. Since the guide pipe 26 is far from the drain hole, the intercepted large particles of impurities can remain in the storage chamber 11. When cleaning is required, it is only necessary to loosen the drain nozzle 14, which is threadedly connected to the side wall of the first connecting platform at the position corresponding to the mold release agent delivery nozzle 6. In addition, a horizontal plate is fixedly connected inside the first connecting platform, and a truncated cone-shaped rubber block 38 is fixedly connected to the lower end of the horizontal plate. The drain nozzle 14 is coaxially arranged with the truncated cone and located below the rubber block 38. Therefore, when the drain nozzle 14 is loosened, the drain nozzle 14 can directly discharge the deposited particles of impurities, and cleaning agent can also be directly introduced from the mold release agent delivery nozzle 6 for rinsing.

[0025] like Figures 2-3 and Figures 11-12 As shown, the braking mechanism used in this technical solution includes an electromagnet 9. The electromagnet 9 is fixed to one side of the fixing frame 10 through a first fixing part. One end of the valve core 13 passes through the fixing frame 10 and is fixedly connected to a strong magnetic ring 12. A limit frame is provided on one side of the fixing frame 10. Two buffer rubber blocks 36 are fixedly connected to one side of the limit frame. The buffer blocks 36 are used to reduce the impact of the valve core 13 on the strong magnetic ring 12 when it moves. A blind hole is opened at one end of the valve core 13. A return spring 37 is sleeved in the blind hole. When the electromagnet 9 is de-energized, the elastic force of the return spring 37 is used to reset the valve core 13. One end of the return spring 37 extends out of the blind hole and contacts one side of the limit frame. One end of the valve body 4 is connected to a sealing end cap 8 that contacts one end of the electromagnet 9 by bolts. The sealing end cap 8 is provided with a through hole through which the power line of the electromagnet 9 passes, and the through hole is sealed.

[0026] When the electromagnet 9 is energized, it generates a magnetic pole opposite to one side of the strong magnetic ring 12. The mutual attraction force overcomes the elastic force of the return spring 37 and the friction between the valve core 13 and the rubber liner 20, causing the valve core 13 to retract into the rubber liner 20. This allows the spiral groove 18 on the valve core 13 to discharge the release agent along with the inside of the rubber liner 20. After spraying, the electromagnet 9 is de-energized, and the magnetic attraction disappears. The elastic force of the return spring 37 overcomes the friction between the valve core 13 and the rubber liner 20, causing the valve core 13 to reset. Alternatively, the electrodes of the electromagnet 9 can be switched to generate a magnetic pole with the same magnetic pole as one end of the strong magnetic ring 12. The magnetic repulsion force causes the valve core 13 to reset quickly. After reset, the spiral groove 18 on the valve core 13 is in an open state, which facilitates quick cleaning when blocked by foreign objects.

[0027] At the same time, such as Figure 10 As shown, in order to solve the problem that the release agent will undergo high-temperature polymerization due to the high temperature generated when the nozzle is close to the mold, this technical solution provides multiple direct-flow air holes 35 along the axial direction at one end of the blind hole. The multiple direct-flow air holes 35 are all connected to one side of the valve core 13. An auxiliary air nozzle 5 is fixedly connected to the side wall of the valve body 4 to deliver airflow to the direct-flow air holes 35. The temperature of the valve core 13 can be directly controlled by the direct-flow airflow, so that the temperature of the valve core 13 and the nozzle can be reduced in time, avoiding the high-temperature polymerization effect of the release agent under high temperature environment. At the same time, the direct-flow airflow can also be blown directly into the mold cavity to assist the mold in temperature control.

[0028] like Figure 2 , Figure 3 , Figure 6 and Figure 10As shown, the telescopic valve core 13 can not only achieve the above-mentioned technical effects, but also, by providing a flow limiting part 16 on the side wall of the valve core 13, and providing a flow limiting platform on the inner side of the rubber liner 20 that cooperates with the flow limiting part 16, and by embedding multiple sealing rings 15 on the side wall of the valve core 13, it can also quickly close the drainage channel when spraying stops, and the closing position is at the front end of the nozzle, so as not to cause the release agent to drip.

[0029] During the spraying operation, after the valve core 13 retracts, the flow-limiting part 16 on its surface quickly separates from the flow-limiting platform inside the rubber bushing 20, thus forming a space for the release agent to pass through, allowing the nozzle to quickly enter the spraying state. When the valve core 13 extends and resets, under the magnetic force generated by the electromagnet 9 or the elastic force of the reset spring 37, the flow-limiting part 16 and the flow-limiting platform quickly adhere to block the flow of the release agent. At the same time, the smooth rod part on the valve core 13 located behind the spiral groove 18 enters the rubber bushing 20, further blocking the flow. In this way, the flow of the release agent can be controlled.

[0030] like Figure 2 , Figure 3 and Figure 9 As shown, the gas-liquid separation design concept adopted in this technical solution utilizes an independent channel to deliver spiral airflow, allowing the spiral atomized release agent to be further dispersed in the spiral airflow. This enables the release agent to increase the spraying area with the airflow and avoids direct impact on the mold cavity, preventing rebound. Specifically, multiple exhaust grooves 34 are obliquely opened at the connection between the air distribution ring 25 and the valve body 4. Multiple circumferentially distributed first oblique holes 32 and second oblique holes 33 are opened through the side wall of the air distribution ring 25. The oblique direction of the first oblique hole 32 is opposite to the direction of the exhaust groove 34 and the second oblique hole 33. The exhaust groove 34 serves as the innermost channel for outputting oblique airflow, forming an oblique airflow that mixes with the atomized release agent before it. Sufficient airflow is provided through the obliquely set first oblique holes and second oblique holes, allowing the release agent to be fully mixed and enter the air.

[0031] An isolation cover 24 is fixedly connected between the first oblique hole 32 and the second oblique hole 33. The isolation cover 24 cooperates with the main body 1 to ensure that the airflow discharged from the first oblique hole 32 has sufficient distance to form a vortex. The end of the isolation cover 24 away from the air distribution ring 25 is provided with a constriction part 23, and the constriction part 23 is used to limit the area of ​​the vortex to avoid the waste of mold release agent due to a large area. A diversion pipe 22 is fixedly connected between the first oblique hole 32 and the exhaust groove 34. The length of the diversion pipe 22 is less than that of the isolation cover 24. The cooperation between the isolation cover 24 and the diversion pipe 22 forms an airflow that is opposite to the direction of the airflow in the first oblique hole 32 and the exhaust groove 34. The opposite airflow can effectively slow down the vortex speed and prevent the mold release agent from falling due to the excessive vortex speed. A guide cover 2 is provided at one end of the main body 1.

[0032] A plurality of guide holes 28 are provided at one end of the valve body 4. The walls of the guide holes 28 have circular holes communicating with the interior of the main body 1. Micro-spray holes communicating with the interior of the valve body 4 are also provided on the walls of the guide holes 28. A pressure ring 21 is fixedly connected to one end of the valve body 4 by bolts. A rubber plug for sealing the guide holes 28 is fixedly connected to one end of the pressure ring 21. Figure 3 As shown, after spraying, the valve core 13 extends out of the rubber liner 20. This allows the airflow from the micro-spraying orifice to directly blow onto the valve core 13. At this time, the airflow can disperse or drip the release agent into the spiral groove 18 on the valve core 13, preventing high-temperature polymerization of the release agent in a high-temperature environment. During spraying, the airflow sprayed vertically directly from the micro-spraying orifice and the rotating release agent are separated by a certain distance (e.g., ...). Figure 2 As shown, after the valve core 13 is fully retracted, its end completely enters the rubber liner 20 for a certain distance, which will cause an impact. This can not only slow down the valve, but also further disperse the release agent by using the airflow impact, so that the release agent can be better mixed in the airflow and fully atomized.

[0033] During spraying, the airflow in the air distribution ring 25 can be selected to continue venting 3 seconds after spraying stops. This time interval is mainly used to cool down and blow off the residual release agent on the surface of the valve core 13. At the start of spraying, the airflow can be delivered in advance, and the release agent can be delivered 2 seconds later. The time interval is used to create a swirling flow field in the airflow before spraying. This way, the release agent can enter a stable airflow as soon as it is discharged, without causing dripping. The compressed airflow can be processed into a constant temperature airflow, such as controlling the airflow temperature at around 50 degrees Celsius, which is below the critical threshold of the silicone oil component.

[0034] The opening area of ​​the two spiral channels formed by the spiral groove 18 on the valve core 13, which is the main component, and the inside of the rubber bushing 20 is controlled at 0.5 mm², which is equivalent to an atomizing nozzle with a diameter of 0.8 mm. The spiral channels can be removed by lathe or pressed out by pressure roller.

[0035] In addition, the rubber liner 20 is made of perfluoroether rubber (FFKM), which has the best resistance to silicone oil penetration (swelling rate <3%), resistance to solvent (benzene / ketone) corrosion, and a temperature range of -20℃ to +325℃. It is required to be maintained and replaced every 8-10 months.

[0036] It should be noted that the term "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A nozzle for robotically spraying release agent, comprising a cylindrical valve body (4), a main body (1) threadedly connected to the valve body (4), and a clamp (3) fixed to one side of the main body (1), characterized in that, Also includes: A rubber liner (20) is press-fitted into a valve body (4) and forms a reservoir (11) in the valve body (4) for containing the release agent. A support assembly (27) for filtering large particles in the release agent is installed in the reservoir (11). The support assembly (27) can also support the rubber liner (20). The valve core (13) is movably sleeved inside the rubber liner (20) and has two spiral grooves (18) on its surface for discharging the release agent. The spiral grooves (18) and the inner side of the rubber liner (20) form two spiral channels so that the release agent forms two symmetrical spiral mists when it is sprayed out, thereby allowing the atomized release agent to be sprayed into the cavity of the mold along an inclined path. The drive mechanism is provided with a fixed frame (10). The drive mechanism is installed in the valve body (4) through the fixed frame (10). The valve core (13) is driven by electromagnetic force to extend and retract in the rubber liner (20) to control the flow of the release agent. When spraying stops, the open spiral groove (18) on the valve core (13) is exposed outside the rubber liner (20), which facilitates quick cleaning of the release agent on the valve core (13). Air distribution ring (25), the air distribution ring (25) is sleeved between the main body (1) and the valve body (4) to form an air distribution chamber (19). The air distribution ring (25) is fixed to the main body (1) by bolts. Multiple air distribution channels on the air distribution ring (25) are used to blow the atomized release agent. At the same time, the flowing air can cool the nozzle and prevent the release agent from being blocked due to high temperature polymerization effect in a high temperature environment. The main body (1) is fixedly connected to a main air nozzle (7) that communicates with the air distribution chamber (19), and the valve body (4) is fixedly connected to a release agent delivery nozzle (6) that communicates with the liquid storage chamber (11).

2. The nozzle for applying a release agent to a robot according to claim 1, characterized in that: One end of the rubber liner (20) is provided with a sealing part (29), and one side of the sealing part (29) is provided with an extension part (31). The valve body (4) is a tubular structure and is provided with a first connecting platform that is threaded to the main body (1). The release agent delivery nozzle (6) is installed on the first connecting platform. One end of the first connecting platform is provided with a second connecting platform. The sealing part (29) is attached to the inner side of the second connecting platform. The extension part (31) is in contact with the inner side of the first connecting platform. The fixing frame (10) holds the sealing part (29) and is fixedly connected to the inner side of the second connecting platform by bolts. The support assembly (27) is a support ring. The support ring is sleeved on the side wall of the rubber liner (20) to support the tube body, the extension part (31) and the sealing part (29). One side of the first connecting platform is fixedly connected to a guide pipe (26) that communicates with the liquid storage chamber (11). The other end of the guide pipe (26) is fixedly connected to the side wall of the valve body (4). One end of the rubber liner (20) is provided with a flow passage (17) that communicates with one end of the guide pipe (26).

3. The nozzle for applying a release agent to a robot according to claim 2, characterized in that: The support assembly (27) includes a flared portion at one end of the support ring, which is fitted inside the first connecting platform. The other end of the support ring is provided with a bent portion (30), which is fitted between the extension portion (31) and the rubber liner (20) so that the extension portion (31) can be tightly sealed to the inside of the first connecting platform. The flared portion is provided with a plurality of matrix-arranged liquid inlet holes, and a rectangular drain hole is provided on the side symmetrical to the liquid inlet holes.

4. The nozzle for applying a release agent to a robot according to claim 2, characterized in that: A drain nozzle (14) is threadedly connected to the side wall of the first connecting platform at the position corresponding to the mold release agent delivery nozzle (6). A horizontal plate is fixedly connected inside the first connecting platform. A rubber block (38) with a frustum structure is fixedly connected to the lower end of the horizontal plate. The drain nozzle (14) is coaxially arranged with the frustum and located below the rubber block (38).

5. The nozzle for applying a release agent to a robot according to claim 1, characterized in that: The braking mechanism includes an electromagnet (9). The electromagnet (9) is fixed on one side of the fixing frame (10) by a first fixing part. One end of the valve core (13) passes through the fixing frame (10) and is fixedly connected to a strong magnetic ring (12). A limit frame is provided on one side of the fixing frame (10). Two buffer rubber blocks (36) are fixedly connected on one side of the limit frame. A blind hole is opened on one end of the valve core (13). A reset spring (37) is sleeved in the blind hole. One end of the reset spring (37) extends out of the blind hole and contacts one side of the limit frame. One end of the valve body (4) is connected to a sealing end cap (8) that contacts one end of the electromagnet (9) by bolts. The sealing end cap (8) is provided with a through hole through which the power line of the electromagnet (9) passes, and the through hole is sealed.

6. The nozzle for applying a release agent to a robot according to claim 5, characterized in that: One end of the blind hole is provided with multiple direct current air holes (35) along the axial direction. The multiple direct current air holes (35) are all connected to one side of the valve core (13). The side wall of the valve body (4) is fixedly connected with an auxiliary air nozzle (5) for supplying airflow to the direct current air holes (35).

7. The nozzle for applying a release agent to a robot according to claim 1, characterized in that: The valve core (13) has a flow limiting part (16) on its side wall, and the rubber liner (20) has a flow limiting platform that cooperates with the flow limiting part (16) on its inner side. The valve core (13) has multiple sealing rings (15) embedded in its side wall.

8. The nozzle for applying a release agent to a robot according to claim 1, characterized in that: The valve ring (25) and the valve body (4) are provided with multiple exhaust grooves (34) at an angle. The side wall of the valve ring (25) is provided with multiple circumferentially distributed first oblique holes (32) and second oblique holes (33). The inclination direction of the first oblique hole (32) is opposite to the direction of the exhaust groove (34) and the second oblique hole (33).

9. The nozzle for applying a release agent to a robot according to claim 8, characterized in that: An isolation cover (24) is fixedly connected between the first oblique hole (32) and the second oblique hole (33). The end of the isolation cover (24) away from the valve ring (25) is provided with a constriction part (23). A diverter pipe (22) is fixedly connected between the first oblique hole (32) and the exhaust groove (34). The length of the diverter pipe (22) is less than that of the isolation cover (24). A guide cover (2) is provided at one end of the main body (1).

10. The nozzle for applying a release agent to a robot according to claim 1, characterized in that: The valve body (4) has multiple guide holes (28) at one end. The guide hole (28) has a circular hole that communicates with the interior of the main body (1) on its hole wall. The guide hole (28) has a micro-spray hole that communicates with the interior of the valve body (4) on its hole wall. The valve body (4) has a pressure ring (21) fixedly connected to one end by bolts. The pressure ring (21) has a rubber plug fixedly connected to one end to seal the guide hole (28).

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