A spray head and an air supply assembly for delivery of compressed air in a spraying device

Abstract

An air supply assembly in a spraying apparatus delivers compressed air via an airtight delivery path. The assembly includes a front-facing concave air outlet and a nozzle slider with a slider cover at its top. The nozzle slider includes a rearwardly inclined slope and an air conduit for receiving air. The slider cover includes a pin extending downward from its bottom. When the slider cover is pressed down, the pin moves downward along the slope, and the nozzle slider moves forward to form an airtight contact with an inner side of a central wall of a spray tray, delivering air to a capsule located on an outer side of the central wall. When the slider cover moves upward, the pin moves upward along the slope, and the nozzle slider moves backward. The nozzle slider does not rotate when the spray tray rotates horizontally.

Description

Technical Field

[0001] Embodiments of the present invention relate to an air sealing mechanism used in a spraying apparatus to prevent compressed air from leaking in the transmission path. Prior Technology

[0002] Airtightness promotes efficient and effective spraying operations. Proper airtightness prevents gas leakage and maintains air pressure. Gas leakage can lead to inconsistent spray patterns and reduced spraying efficiency. Inconsistent air pressure can cause various problems when atomizing sprayed materials, such as uneven droplets and intermittent spray output. An example of a spraying device is a cosmetic sprayer. Proper sealing of the gas delivery path in a cosmetic sprayer is crucial for producing a consistent spray pattern on the user's skin. Summary of the Invention

[0003] In one embodiment, an air supply assembly is provided in a spraying apparatus for supplying compressed air to a capsule containing a nozzle and a fluid. The air supply assembly includes a nozzle slider and a slider cover. The nozzle slider includes a concave air outlet facing a front side of the spraying apparatus, a rearwardly inclined slope, a groove at a bottom end of the slope, and an air conduit for receiving the compressed air. The slider cover is located above the nozzle slider. A bottom surface of the slider cover includes a downwardly extending pin. When the slider cover is pushed down, the pin moves downward along the slope to the groove, and the nozzle slider moves forward to form an airtight contact with an inner side of a central wall of the spray tray, thereby transmitting compressed air to the capsule through an air hole in the central wall. The capsule is located on the spray tray and on an outer side of the central wall. When the slider cover moves upward, the pin moves upward along the slope, and the nozzle slider moves backward. The nozzle slider does not rotate when the spray tray rotates horizontally.

[0004] In another embodiment, a spray head of a spraying apparatus is provided for supplying compressed air to a capsule including a nozzle and containing a fluid. The spray head includes a spray tray for holding the capsule, the spray tray including a central wall defining a central cavity. The spray head also includes a motor module for horizontally rotating the spray tray about a vertical axis passing through the central cavity of the spray tray. The spray head also includes the aforementioned air supply assembly.

[0005] Other aspects and features will be understood by those skilled in the art in the following description of specific embodiments and in the accompanying drawings. Simple Explanation of the Diagram

[0006] The present invention is illustrated in the accompanying drawings by way of example rather than limitation, wherein similar reference numerals denote similar elements. It should be noted that different references to "one" or "some" embodiments in this disclosure do not necessarily refer to the same embodiment, and these references indicate at least one. Furthermore, when a particular feature, structure, or characteristic is described in one embodiment, it will be understood that those skilled in the art will be able to implement that feature, structure, or characteristic in other embodiments, whether or not it is explicitly described.

[0007] Figure 1 illustrates the process of assembling a capsule onto a spray coating tray according to one embodiment. Figure 2 illustrates the process of assembling a spray tray filled with capsules onto the spray tray head according to one embodiment. Figure 3A is a partial view of a spray tray according to an embodiment. Figure 3B shows a nozzle slider in an air supply assembly according to one embodiment. Figure 4 shows an exploded view of an air supply component according to one embodiment. Figures 5A and 5B show perspective views of the air supply assembly when the paint spraying disc cover is opened and closed according to an embodiment. Figures 6A and 6B show side vertical sectional views of the air supply assembly when the paint spraying disc cover is opened and closed according to an embodiment. Figure 7A shows a side vertical cross-sectional view of an air supply assembly according to one embodiment delivering air to a capsule on a spray tray. Figure 7B shows a perspective view of a capsule according to one embodiment. Figures 8A and 8B show top views of the nozzle slider when the spray disc cover is opened and closed according to an embodiment. Figure 9A illustrates, according to one embodiment, the partial removal of the container in the air supply assembly when the spray disc cover is opened. Figure 9B is a front vertical cross-sectional view of an air supply assembly when the spray coating cover is open, according to one embodiment. Figure 10A illustrates, according to one embodiment, the partial removal container in the air supply assembly when the spray disc cover is closed. Figure 10B is a front vertical cross-sectional view of the air supply assembly when the spray disc cover is closed, according to an embodiment. Figure 11 is a side vertical sectional view of the spray disc head according to an embodiment. Figure 12 shows an exploded view of the rotating assembly in the spray disc head according to one embodiment. Figure 13 is a block diagram illustrating the construction of a spraying apparatus according to one embodiment. Implementation

[0008] Numerous specific details are set forth in the following description. However, it should be understood that embodiments of the invention may be practiced without these specific details. In other instances, some well-known circuits, structures, and techniques have not been shown in detail in this description so as not to impede understanding. However, those skilled in the art will understand that the invention may be practiced without these specific details. Those skilled in the art, through the included description, will be able to implement appropriate functions without undue experimentation.

[0009] The disclosed embodiment of the air-sealing mechanism can be used in the air delivery path of a spraying device for spraying atomized fluid. The spraying device includes an air supply assembly located in a spray disc head for supplying compressed air from an air source to an air orifice connected to a fluid-containing capsule. The capsule has an air inlet aligned with the air orifice and a nozzle for spraying the atomized fluid. A non-limiting example of a spraying device is an automatic cosmetic machine capable of spraying cosmetic products onto a user's skin. The spray disc head includes a disc cover that is closed during operation of the spraying device. When the spray disc cover is closed, the air supply assembly forms an air seal around the air orifice; when the spray disc cover is open, the air seal is released. In one embodiment, the air supply assembly includes a nozzle slider that slides forward (e.g., toward the spraying target) when the spray disc cover is closed to form an air seal, and slides backward when the spray disc cover is open to release the air seal.

[0010] In one embodiment, the spray disc head includes a rotating platform located below the spray disc tray and used for horizontally rotating the spray disc tray. The spray disc tray includes a plurality of slots, each slot capable of holding a capsule containing a fluid (e.g., a skin spray product). Each capsule can be individually placed and removed from a corresponding slot in the spray disc tray. The spray disc tray includes an air hole in each slot to allow compressed air from an air supply assembly to enter the corresponding capsule through the air hole. In one embodiment, the air inlet in the capsule is equipped with a sealing rubber ring. The sealing rubber ring of the capsule forms an airtight contact from the outside of the spray disc tray around the air hole in the corresponding spray disc tray slot. When the spray disc cover is closed and the capsule is rotated forward for spraying, the nozzle slider presses against the air hole in the forward slot from the inside of the spray disc tray. Therefore, both the inside and outside of the air hole are air-sealed for optimal air delivery.

[0011] In this disclosure, the term "front side" refers to the side facing the user. Therefore, the front side of the spraying apparatus, the spray head and its components, and the air supply components and their components are all the side facing the user. The term "forward" refers to the direction facing forward, while the term "backward" refers to the direction opposite to the front.

[0012] Figure 1 illustrates the process of mounting capsule 120 onto spray tray 110 according to one embodiment. Referring to Figures 1(a) and (b), capsule 120 is inserted into a slot in spray tray 110. Capsule 120 contains a fluid, such as a spray skin product, which can be atomized by compressed air and sprayed from nozzle 125. In Figure 1(c), it is shown that spray tray 110 is completely filled with capsule 120; that is, all slots in spray tray 110 are occupied by capsule 120.

[0013] Figure 2 illustrates the process of mounting a fully filled spray tray 110 onto a spray tray head 210 according to one embodiment. In one embodiment, the spray tray head 210 is part of a spraying apparatus. Referring to Figure 2(a), the spray tray head 210 includes an air supply assembly 400 positioned at the center of a rotating platform 1130. A fully filled spray tray 110 is placed onto the rotating platform 1130 along this axis, with the center of the spray tray 110 aligned with the center of the air supply assembly 400. Further details regarding the air supply assembly 400 will be described in Figure 4. Referring to Figure 2(b), the top of the air supply assembly 400 is a slider cover 240 that protrudes from the center of the spray tray 110 after the spray tray 110 is mounted onto the spray tray head 210. The spray tray head 210 includes a spray tray cover 220 with a pointed tip 230 attached to its underside. When the spray tray cover 220 is flipped downwards, the user can press the side button of the spray tray cover 220 to activate the latch 235, engaging it with the slider cover 240, thereby safely closing the spray tray cover 220. When the spray tray cover 220 is closed, as shown in Figure 2(c), the tip 230 on the spray tray cover 220 presses down the slider cover 240, thereby forming an air seal in the air delivery path. Further details regarding this air seal will be provided below.

[0014] Figure 3A is a partial view of a spray tray 110 according to one embodiment. In this example, the spray tray 110 is substantially circular and has a central cavity defined by a central wall 310 having a circular shape. Surrounding the central wall 310 are a plurality of slots 385 (e.g., eight or a different number), which are separated by side fins 320. Each capsule 120 is placed in one slot 385. During spraying operation, the spray tray 110 rotates horizontally about a vertical axis 118 (Figure 1(c)) that extends through the central cavity. The capsules 120 alternately receive compressed air from the air supply assembly 400 (Figure 4) and expel fluid through their respective nozzles 125 (Figure 1(a)).

[0015] In one embodiment, a sealing rubber layer 330 is attached to the inside of the central wall 310. Each slot includes a top notch 341 and a bottom notch 342 for receiving a top pin 710 and a bottom pin 720 of the capsule 120 placed within the slot, respectively (FIG. 7B). The top notch 341 includes an air hole 340 that penetrates the central wall 310 and the sealing rubber layer 330 to reach the inside of the central wall 310. The air hole 340 provides a channel for transmitting compressed air from the air supply assembly 400 (FIG. 4) to the capsule 120.

[0016] In one embodiment, the spray tray 110 includes an upper portion and a lower portion, the boundary between which is shown as a line 315 in FIG. 3A. In one embodiment, the upper portion is made of a first material (e.g., aluminum), and the lower portion is made of a second material (e.g., a transparent / translucent material such as polycarbonate). In another embodiment, both the upper and lower portions are made of the same material (e.g., aluminum). The top notch 341 and the air hole 340 are located in the upper portion. The purpose of choosing the first material is to optimize airtightness when the air inlet of the capsule 120 is tightly pressed against the top notch 341 to receive compressed air from the air hole 340. A non-limiting example of the first material is aluminum, which provides structural strength and improves airtightness. When the lower portion is made of a transparent / translucent material, a light-emitting diode (LED) lamp can be embedded in the spray tray head 210 (e.g., located below or to the side of the spray tray 110) to illuminate the capsule 120. In one embodiment, the bottom of the capsule is a fluid container, which may be made of a transparent / transparent material, so that the fluid inside can be seen from the outside.

[0017] Figure 3B shows a nozzle slider 350 according to one embodiment. The nozzle slider 350 is one component of the air supply assembly 400 shown in Figure 4. The nozzle slider 350 includes a front section 360, a middle section 370, a rear section 380, and a recess 372 located between the middle section 370 and the rear section 380. The front section 360 includes a lip 361 surrounding a concave air outlet 362, which further includes an air outlet 363 for delivering compressed air into a selected capsule 120. During operation, the air outlet 363 is radially directed towards the spray target. The lip 361 and the concave air outlet 362 are elongated sides; that is, their width is greater than their height. When installed in the spray disc head 210 and the spray disc cover 220 is closed (Figure 2), the lip 361 forms an airtight seal with the sealing rubber layer 330 of the spray disc tray 110 (Figure 3A). In other words, the front surface of the lip 361 has a curvature that matches the curvature of the sealing rubber layer 330.

[0018] The middle section 370 includes a rearwardly sloping surface (“sloping surface 371”) facing rearward and upward. The sloping surface 371 slopes downward to a recess 372 at its bottom end. When the spray plate cover 220 slides down and closes, a pin 510 (Figures 5A and 5B) extending downward from the bottom surface of the slider cover 240 (Figure 2) is pushed into the recess 372. The bottom of the middle section 370 is an air tube 390 adapted to a flexible air tube 410 (Figure 4) to receive compressed air from an air source. The rear section 380 includes a stop block 383. The stop block 383 is L-shaped, with its longer end extending rearward.

[0019] Figure 4 shows an exploded view of an air supply assembly 400 according to one embodiment. Referring to Figure 3B, the air supply assembly 400 includes a container 450, a slider cover 240, a vertical spring 415, a nozzle slider 350, a rear spring container 420, a horizontal spring 425, and a resilient air tube 410. The air tube 390 of the nozzle slider 350 is inserted into the resilient air tube 410. Compressed air from an air source enters the resilient air tube 410 and reaches the nozzle slider 350. An air passage inside the nozzle slider 350 allows air to flow from the middle section 370 to the front section 360 of the nozzle slider 350 and exit from the air outlet 363. The outer surface of the container 450 is generally cylindrical. The container 450 includes an elongated opening 460 on its front side (i.e., the side facing the user). The elongated lip 361 of the nozzle slider 350 is inserted into the elongated opening 460. The rear spring container 420 is attached to the back of the rear section 380. The nozzle slider 350 and the attached rear spring container 420 move back and forth synchronously.

[0020] Referring to Figures 1 through 4, in one embodiment, a vertical spring 415 extends vertically downward from the bottom of the slider cover 240. When the spray disc cover 220 is closed, the slider cover 240 moves downward (Figure 10A), and the vertical spring 415 is compressed and contacts a corresponding stop block in the container 420. When the spray disc cover 220 is open, the slider cover 240 moves upward (Figure 9A), and the vertical spring 415 extends to its original length. Two vertical springs 415 are located on the left and right sides of the middle section 370 of the nozzle slider 350, respectively. A horizontal spring 425 is attached to the front side of the rear spring container 420 and extends forward horizontally. When the spray disc cover 220 is closed, the nozzle slider 350 and the rear spring container 420 move forward, and the horizontal spring 425 is compressed and contacts a corresponding stop block in the container 450. When the spray disc cover 220 is open, the nozzle slider 350 and the rear spring container 420 move backward, and the horizontal spring 425 extends to its original length. Two horizontal springs 425 are located on the left and right sides of the rear section 380 of the nozzle slider 350, respectively.

[0021] Figures 5A and 5B show angle views of the air supply assembly 400 according to one embodiment when the spray tray cover 220 is open and closed, respectively. To illustrate the operation of the air supply assembly 400 more clearly, the container 450 is partially removed in the figures, and a vertical cross-sectional view of the spray tray cover 220, the slider cover 240, and the spray tray tray 110 is shown. When the spray tray cover 220 is open, the slider cover 240 extends from the central opening of the spray tray tray 110. Referring to Figure 3B, when the spray tray cover 220 is closed, the pointed tip 230 on the bottom surface of the spray tray cover 220 presses down the slider cover 240, pushing the pin 510 towards the ramp 371 and into the groove 372. The force applied to the ramp 371 generates a forward force, causing the nozzle slider 350 to move forward and form an airtight contact with the inner side of the central wall 310 of the spray tray tray 110. More specifically, this airtight contact is formed between the lip 361 of the nozzle slider 350 and the sealing rubber layer 330 of the spray tray 110. Forward movement of the nozzle slider 350 causes the elastic air tube 410 to bend forward.

[0022] When the spray disc cover 220 slides upward and opens as shown in Figure 5A, the vertical spring 415 (Figure 4) extends to its original length, which helps to spring the slider cover 240 upward. The upward movement of the slider cover 240 causes the pin 510 to slide out of the recess 372. The horizontal spring 425 extends and generates a rearward force to pull the nozzle slider 350 backward. As the nozzle slider 350 moves backward, the stop block 383 on the nozzle slider 350 presses against the container 450 to prevent the nozzle slider 350 from moving further backward, causing the nozzle slider 350 to return to its original position (i.e., the open position).

[0023] Figures 6A and 6B respectively show side vertical cross-sectional views of the air supply assembly 400 when the paint tray cover 220 is opened and closed according to one embodiment. Figures 6A and 6B show the movement of the pin 510, the forward and backward movement of the nozzle slider 350, and the position of the stop block 383. Figure 6A shows a gap between the lip 361 of the nozzle slider 350 and the sealing rubber layer 330 of the paint tray tray 110 when the paint tray cover 220 is open. Figure 6B shows that when the paint tray cover 220 is closed, the pin 510 moves downward and the nozzle slider 350 moves forward. The lip 361 of the nozzle slider 350 presses firmly against the sealing rubber layer 330, thereby forming an airtight seal around the air hole 340 on the paint tray tray 110. Figure 6B also shows compressed air flowing through the air passage 610 within the nozzle slider 350 and reaching the air hole 340 on the paint tray tray 110. The air passage 610 extends vertically upward from the air pipe 390 and then turns forward horizontally to the air outlet 363 of the nozzle slider 350 (Figure 3B).

[0024] Figure 7A shows a side vertical cross-sectional view of the air supply assembly 400 supplying air to a capsule 120 on a spray tray 110 according to one embodiment. Figure 7B shows an angle view of the capsule 120 according to one embodiment. In Figures 5A, 5B, 6A, and 6B, for simplicity, no capsule 120 is shown on the spray tray 110. Figure 7A shows the capsule 120 placed in a forward slot (i.e., the user-facing side) of the spray tray 110. Only capsules rotated into the forward slot can receive compressed air from the air supply assembly 400 (Figure 4). Referring to Figure 3A, compressed air from the air source is supplied to the capsule 120 via a nozzle slider 350 and an air hole 340 in the central wall 310 of the spray tray 110. The capsule 120 includes a top pin 710 and a bottom pin 720, which are inserted into corresponding notches (341, 342) at corresponding positions in the slots 385 of the spray tray 110. In one embodiment, the top surface of capsule 120 includes an identifier, such as radio frequency identification (RFID) 730, for identifying the fluid contained therein and verifying capsule 120 to prevent counterfeiting and for other purposes. In one embodiment, capsule 120 may include an air hole 740 that extends through the top surface of capsule 120 and leads to a fluid container inside capsule 120. The air hole 740 can balance the air pressure inside and outside the fluid container during the spraying operation.

[0025] In one embodiment, the top side of the top pin 710 may be parallel to the top surface of the capsule 120. In other embodiments, the top pin 710 may have any shape. The top pin 710 includes a circular opening 711 surrounded by a sealing rubber ring 712. This circular opening 711 is the air inlet of the capsule 120. When the capsule 120 is placed in the slot of the spray tray 110, the top pin 710 is located in the top recess 341 of the slot, and the sealing rubber ring 712 is pressed tightly around the air hole 340 in the slot. The alignment of the circular opening 711 with the air hole 340 in the slot allows air to enter the capsule 120 from the nozzle slider 350 and achieves optimal airtightness.

[0026] Figures 8A and 8B, according to one embodiment, show top views of the nozzle slider 350 when the paint tray cover 220 is open and closed, respectively. For simplicity, the paint tray cover 220 (Figure 2) is not shown in these figures. Referring to Figure 2, the paint tray 110 is filled with the capsule 120 and placed on the paint tray head 210. More specifically, the paint tray 110 is placed on the paint tray head 210 so that the air supply assembly 400 can be inserted into the central cavity of the paint tray 110 (defined by the central wall 310). When the paint tray cover 220 is open as shown in Figure 8A, the nozzle slider 350 is in its original position within the container 450, and both the vertical spring 415 and the horizontal spring 425 are in the relaxed state (i.e., their original length). When the spray plate cover 220 is closed, the nozzle slider 350 moves forward, and the front section 360 of the nozzle slider 350 is pushed forward, at least partially passing through the front opening 460 of the container 450, and pressing tightly against the sealing rubber layer 330 inside the central wall 310. Both the vertical spring 415 and the horizontal spring 425 are compressed.

[0027] Figures 9A and 10A illustrate the internal structure of the air supply assembly 400 according to one embodiment when the paint spray cover 220 is open and closed, with the container 450 portion removed. Figures 9B and 10B show a front vertical cross-sectional view of the air supply assembly 400 according to one embodiment when the paint spray cover 220 is open and closed. For simplicity, the paint spray cover 220 (Figure 2) is not shown in these figures. The front view of the air supply assembly 400 shows its bilateral symmetry. These figures illustrate the movement of the components of the air assembly 400 when the paint spray cover 220 is closed from the open position.

[0028] Figure 11 shows a side vertical cross-sectional view of the spray tray head 210 according to an embodiment when the spray tray cover 220 is closed. Figure 11 shows the motor module 1100 in the spray tray head 210. Figure 12 is an exploded view of the spray tray head base assembly 1200 in the spray tray head 210 according to an embodiment. Referring to Figures 11 and 12, a rotating platform 1130 is located below the spray tray tray 110 and above the motor module 1100. A set of gears 1250 on the top of the motor module 1100 engages with the bottom surface of the rotating platform 1130, which is located below the spray tray tray 110. The motor module 1100 generates rotational force to drive the gears 1250, which horizontally rotate the rotating platform 1130, the spray tray tray 110, and the capsule 120 (not shown) thereon. In other words, the spray tray 110 and capsule 120 rotate horizontally about the vertical axis 118 (FIG. 1(c)) along with the rotating platform 1130. The motor module 1100 also includes a stationary base 1260. The air supply assembly 400 is located on top of the stationary base 1260 and remains stationary when the rotating platform 1130 rotates.

[0029] Referring to Figure 11, a downwardly suspended tab 1135 is attached to a predetermined bottom position of the rotating platform 1130. For example, this bottom position might be located on the centerline of a slot in the paint tray 110. The tab 1135 protrudes downward and rotates with the rotating platform 1130. A sensing module 1120 is included below the rotating platform 1130 in the paint tray head 210. This sensing module 1120 is located at a marked position on the paint tray head 210 (e.g., on the centerline of the paint tray head 210). The sensing module 1120 remains stationary and does not rotate with the rotating platform 1130. The sensing module 1120 can detect the presence of the tab 1135 and determine how much the paint tray head platform 1130 has rotated from the marked position (e.g., the angle of rotation). In one embodiment, the sensing module 1120 includes a transmitter located on one side of the notch 1125 and a receiver on the other side. The transmitter and receiver are opposite each other, and the transmitter continuously transmits light to the receiver. When the tab 1135 moves into the notch 1125 between the two sides to block light transmission, the receiver detects the presence of the tab 1135 and determines that the slot of the particular paint tray has been rotated to the marked position.

[0030] In one embodiment, when the spray tray 110 carries up to N capsules, each capsule 120 can rotate to a front position on the spray tray head 210 to receive compressed air from the air supply assembly 400 and spray from its nozzle. Only capsules 120 in the front position can receive compressed air from the air supply assembly 400. Therefore, each time the spray tray 110 rotates 360 / N degrees, another capsule 120 on the spray tray 110 rotates to the front position for spraying. To create a diffusion spray effect, the spray tray 110 can rotate horizontally by an angle less than 360 / N degrees. This small angle is called the "diffusion angle". For example, when N=8 and 360 / 8=45 degrees, the spray tray 110 can rotate 15 degrees left or right to produce a diffusion effect. The air supply assembly 400 does not rotate with the spray tray 110. Referring to Figures 3A and 3B, when the spray tray 110 rotates at the diffusion angle, the air hole 340 on the spray tray 110 is no longer aligned with the air outlet 363 of the nozzle slider 350. However, the air hole 340 on the spray tray 110 is still within the coverage area of ​​the lip 361 and the concave air outlet 362. Therefore, when the spray tray 110 rotates within the diffusion angle range, the capsule 120 located at the front position can still receive compressed air.

[0031] When the user opens the spray tray cover 220 to remove or replace one or more capsules 120, the user can first remove the spray tray tray 110 from the spray tray head 210. When the spray tray cover 220 is opened, the nozzle slider 350 moves back to its original position, releasing the air seal around the air holes 340 on the spray tray tray 110. This release of the air seal makes it easier for the user to remove the spray tray tray 110 from the spray tray head 210 due to reduced resistance. Furthermore, when the user removes the spray tray tray 110, the nozzle slider 350 does not press tightly against the sealing rubber layer 330, which reduces wear on the sealing rubber layer 330 and extends its lifespan.

[0032] Figure 13 is a block diagram illustrating a spraying apparatus 1300 according to one embodiment. The spraying apparatus 1300 includes a spray head 210, operatively capable of receiving compressed air from an air source 1310 such as an air pump. The spraying apparatus 1300 also includes a processing circuit 1320 to control the operation of the spray head 210 and the air source 1310. Other components of the spraying apparatus 1300 are omitted for simplicity.

[0033] An air supply assembly is provided in a spraying apparatus for delivering compressed air to a capsule comprising a nozzle and a fluid. The air supply assembly includes a nozzle slider and a slider cover. The nozzle slider includes a concave outlet facing the front of the spraying apparatus, a rearwardly inclined slope, a groove at the bottom end of the slope, and an air conduit for receiving compressed air. The slider cover is located above the nozzle slider. The bottom surface of the slider cover includes a downwardly extending pin. When the slider cover is pushed down, the pin moves downward along the slope to the groove, and the nozzle slider moves forward to form an airtight contact with the inner side of the central wall of the spray tray, thereby delivering compressed air to the capsule through an air hole in the central wall. The capsule is located on the spray tray and on the outer side of the central wall. When the slider cover moves upward, the pin moves upward along the slope, and the nozzle slider moves backward. When the spray tray rotates horizontally, the nozzle slider does not rotate.

[0034] In one embodiment, the concave air outlet is surrounded by a laterally extending lip. As the spray tray rotates at a diffusion angle within the coverage area of ​​the lip, compressed air is delivered to the capsule through an air hole. The air supply assembly further includes a cylindrical container having an elongated opening at its front and containing a nozzle slider internally. The lip of the nozzle slider can be fitted into the elongated opening.

[0035] In one embodiment, a rear section of the nozzle slider is attached to a spring module having a forward-extending horizontal spring. When the nozzle slider moves forward, the horizontal spring is compressed; when the nozzle slider moves backward, the spring extends to its original length. In one embodiment, the bottom surface of the slider cover also includes a downward-extending vertical spring. When the spray tray cover is closed, the vertical spring is compressed; when the spray tray cover is open, the vertical spring extends to its original length. In one embodiment, the nozzle slider also includes a stop attached to a rear section of the nozzle slider to prevent backward movement of the nozzle slider when the slider cover moves upward.

[0036] In one embodiment, a flexible air tube is attached to the bottom of a nozzle slider for transmitting compressed air from an air source through the nozzle slider. The flexible air tube bends forward as the nozzle slider moves forward.

[0037] A spray head for a spraying apparatus is provided for delivering compressed air to a capsule including a nozzle and having a liquid. The spray head includes a spray tray for holding the capsule, the spray tray including a central wall defining a central cavity. The spray head also includes a motor module for horizontally rotating the spray tray about a vertical axis passing through the central cavity of the spray tray. The spray head also includes the aforementioned air supply assembly.

[0038] In one embodiment, the spray disc head includes a spray disc cover located on top of the slider cover. When the spray disc cover is closed, the slider cover is pressed down by the spray disc cover, and the nozzle slider is pushed forward by a pin attached to the slider cover.

[0039] In one embodiment, the inner side of the central wall of the spray tray includes a sealing rubber layer. In another embodiment, the spray tray includes a top made of a first material and a bottom made of a second material different from the first material. The top includes air holes. The second material is transparent or translucent. In one embodiment, the capsule includes a top pin having a circular opening surrounded by a sealing rubber ring. The circular opening is aligned with the air holes of the spray tray.

[0040] In one embodiment, the spray tray head includes a rotating platform located below the spray tray tray, the rotating platform rotating together with the spray tray tray. The rotating platform includes a protrusion extending downward and attached to a bottom position of the rotating platform. The spray tray head further includes a fixed sensing module located below the rotating platform, the fixed sensing module being used to detect the presence of the protrusion. The fixed sensing module includes a transmitter located on a first side of a notch and a receiver located on a second side of the notch. When the protrusion enters the notch, the fixed sensing module detects the presence of the protrusion.

[0041] In one embodiment, the motor module includes a gear and a fixed base. The gear engages with the bottom of a rotating platform located below the paint tray to rotate the rotating platform. The air supply assembly is located above the fixed base and remains stationary while the rotating platform rotates.

[0042] In one embodiment, the spray tray includes a plurality of side fins arranged horizontally around a central wall, and a slot between adjacent side fins for receiving a capsule. The capsule, rotated into a forward slot of the spray tray, receives compressed air from an air supply assembly.

[0043] While the invention has been described with reference to various embodiments, those skilled in the art will recognize that the invention is not limited to these described embodiments and that modifications and alterations can be made within the spirit and scope of the appended claims. Therefore, this description should be considered exemplary rather than restrictive.

[0044] 110: Spray coating tray 118: Vertical axis 120: Capsules 125: Nozzle 130: Rotating Platform 210: Spray coating disc head 220: Spray coating disc cover 230: Tip 235: Lock 240: Sliding cover 310: Central Wall 315: Line 320: Lateral fins 330: Sealing rubber layer 340: Air vent 341: Top notch 342: Bottom notch 350: Nozzle slider 360: Front end 361: Lips 362: Concave air outlet 363: Air Outlet 370: Middle Section 371: Incline 372: Groove 380: Later Section 383: Stop block 385: Slot 390: Air pipe 400: Air supply component 410: Flexible air tube 415: Vertical Spring 420: Rear spring container 425: Horizontal spring 450: Container 460: Long, narrow opening 510: Pin 610: Air passage 710: Top pin 711: Circular opening 712: Sealing rubber ring 720: Bottom Pin 730: Radio Frequency Identification 740: Air vent 1100: Motor Module 1120: Sensing Module 1125: Gap 1130: Rotating Platform 1133: Launcher 1135: Lug 1200: Spraying disc head base assembly 1250: Gear 1260: Fixed base 1300: Spraying equipment 1310: Air source 1320: Processing Circuit

Claims

1. An air supply assembly located within a spraying apparatus and used to deliver compressed air to a capsule, the capsule including a nozzle and including a fluid, comprising: A nozzle slider includes a concave air outlet facing a front side of the spraying device, a rearwardly inclined slope, a groove at a bottom end of the slope, and an air pipe for receiving compressed air; and a slider cover located on top of the nozzle slider, a bottom surface of the slider cover including a downwardly extending pin, wherein when the slider cover is pushed down, the pin moves down along the slope to the groove, and the nozzle slider moves forward to form an airtight contact with an inner side of a central wall of a spraying tray, thereby transmitting the compressed air to a capsule through an air hole in the central wall, wherein the capsule is located on the spraying tray and on an outer side of the central wall, and when the slider cover moves upward, the pin moves upward along the slope, and the nozzle slider moves backward, wherein the nozzle slider does not rotate when the spraying tray rotates horizontally.

2. The air supply assembly as claimed in claim 1, wherein the concave air outlet is surrounded by a laterally extended lip, and wherein compressed air is delivered to the capsule through the air hole as the spray tray rotates at a diffusion angle within a coverage area of ​​the lip.

3. The air supply assembly as claimed in claim 1, wherein a rear section of the nozzle slider is attached to a spring module having a forward-extending horizontal spring, wherein the horizontal spring is compressed when the nozzle slider moves forward and extends to an original length when the nozzle slider moves backward.

4. The air supply assembly as claimed in claim 1 further includes a resilient air tube attached to a bottom of the nozzle slider to transmit the compressed air from an air source and through the nozzle slider, wherein the resilient air tube bends forward as the nozzle slider moves forward.

5. The air supply assembly as claimed in claim 1, wherein the air supply assembly is part of a spray disc head, the spray disc head including a spray disc cover located at the top, and wherein when the spray disc cover is closed, the slider cover is pushed down by the spray disc cover, and the nozzle slider is pushed forward by the pin attached to the slider cover.

6. The air supply assembly as claimed in claim 5, wherein the bottom surface of the slider cover further includes a downwardly extending vertical spring, wherein the vertical spring is compressed when the spray disc cover is closed and extends to an original length when the spray disc cover is open.

7. The air supply component as described in claim 1, further comprising: A cylindrical container includes an elongated opening on its front side, wherein a nozzle slider is located inside the cylindrical container, and one lip of the concave air outlet surrounding the nozzle slider can be inserted into the elongated opening.

8. The air supply assembly as claimed in claim 1, wherein the nozzle slider further includes a stop block attached to a rear section of the nozzle slider to prevent the nozzle slider from moving backward when the slider cover moves upward.

9. A spray head of a spraying apparatus for conveying compressed air to a capsule, the capsule including a nozzle and including a fluid, comprising: A spray tray on which the capsule is placed, the spray tray including a central wall defining a central cavity; a motor module for rotating the spray tray horizontally about a vertical axis extending through the central cavity of the spray tray; and an air supply assembly comprising: A nozzle slider includes a concave air outlet facing a front side of the spraying device, a rearwardly inclined slope, a groove at a bottom end of the slope, and an air pipe for receiving compressed air; and a slider cover located on top of the nozzle slider, a bottom surface of the slider cover including a downwardly extending pin, wherein when the slider cover is pushed down, the pin moves down along the slope to the groove, and the nozzle slider moves forward to form an airtight contact with an inner side of the central wall, thereby transmitting the compressed air through an air hole in the central wall to a capsule located on an outer side of the central wall, and when the slider cover moves upward, the pin moves upward along the slope, and the nozzle slider moves backward, wherein the nozzle slider does not rotate when the spraying tray rotates.

10. The spray disc head as claimed in claim 9, wherein the concave air outlet is surrounded by a laterally extended lip, and wherein compressed air is transmitted to the capsule through the air hole when the spray disc tray rotates at a diffusion angle within a coverage area of ​​the lip.

11. The spray disc head as claimed in claim 9, wherein a rear section of the nozzle slider is attached to a spring module having a forward-extending horizontal spring, wherein the horizontal spring is compressed when the nozzle slider moves forward and extends to an original length when the nozzle slider moves backward.

12. The spray head as claimed in claim 9 further includes a resilient air tube attached to a bottom of the nozzle slider to transmit air from an air source, wherein the resilient air tube bends forward as the nozzle slider moves forward.

13. The spray head as described in claim 9, further comprising: A spray disc cover is located on top of the slider cover, wherein when the spray disc cover is closed, the slider cover is pushed down by the spray disc cover, and the nozzle slider is pushed forward by the pin attached to the slider cover.

14. The spray tray head as claimed in claim 9, wherein the inner side of the central wall of the spray tray tray includes a sealing rubber layer.

15. The spray tray head as claimed in claim 9, wherein the spray tray tray includes a top made of a first material and a bottom made of a second material, the second material being different from the first material, the top including the air hole, and the second material being transparent or translucent.

16. The spray tray head as claimed in claim 9, wherein the capsule includes a top pin having a circular opening surrounded by a sealing rubber ring, the circular opening being aligned with the air hole of the spray tray.

17. The spray head as described in claim 9, further comprising: A rotating platform is located below the spray tray and rotates with the spray tray. The rotating platform includes a protrusion that extends downward and is attached to a bottom surface of the rotating platform. A fixed sensing module is located below the rotating platform and is used to detect the presence of the protrusion. The fixed sensing module includes a transmitter located on a first side of a notch and a receiver located on a second side of the notch, the second side being opposite to the first side. The fixed sensing module detects the presence of the protrusion when it moves to the notch.

18. The spray plate head as claimed in claim 9, wherein the motor module includes a plurality of gears and a fixed base, the plurality of gears engaging with a bottom surface of a rotating platform below the spray plate tray to rotate the rotating platform, and wherein the air supply assembly is located on top of the fixed base, and the air supply assembly remains stationary when the rotating platform rotates.

19. The spray disc head as claimed in claim 13, wherein the bottom surface of the slider cover further includes a downwardly extending vertical spring, wherein the vertical spring is compressed when the spray disc cover is closed and extends to an original length when the spray disc cover is open.

20. The spray disc head as claimed in claim 9, wherein the spray disc tray includes a plurality of side fins arranged horizontally around the central wall, and a slot is provided between two adjacent side fins for receiving one of a plurality of capsules, wherein the one capsule, rotated to a forward slot of the spray disc tray, receives compressed air from the air supply assembly.

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