Automatic powder filling device and method for product powder bin

Abstract

The present application relates to a kind of product powder bin automatic powder filling device and method, powder bin upper portion is equipped with powder filling port, powder filling device includes transmission mechanism, assembly mechanism, powder filling mechanism, vibration mechanism, loading station, disassembly cover mechanism and cover backflow track, transmission mechanism includes carrier;Assembly mechanism is used to cover with cover body is arranged on carrier and is fixed, cover body has accommodating cavity, is equipped with lower portion and is communicated with the powder outlet of accommodating cavity, when cover body covers with carrier, the powder outlet is located above the powder filling port, the position of both corresponds and is communicated with each other;Powder filling mechanism is used to fill powder into accommodating cavity;Vibration mechanism is used to drive the carrier, cover body and product synchronous vibration;Loading station is used to provide cover body, disassembly cover mechanism is removed from carrier and is transferred to cover body backflow track on cover body, cover body backflow track is transmitted to the loading station of cover body, powder filling device can eliminate the influence of powder jam and can improve powder filling efficiency, cover body can be recycled.

Description

[0001] This application is a divisional application of Chinese invention patent application No. 2024103465235, filed on March 26, 2024, entitled "A Powder Filling Apparatus and Powder Filling Method". Technical Field

[0002] This invention relates to an automatic powder filling device and method for a product powder silo. Background Technology

[0003] During the manufacturing process of some products, a certain amount of powder needs to be injected into the product through holes set on the product. For example, for products such as loudspeakers, sound-absorbing material needs to be poured into the powder hopper through the powder filling port to form a virtual acoustic cavity. The sound-absorbing material is in powder form. During the filling process, the sound-absorbing material often diffuses slowly to the surroundings, causing the sound-absorbing material to accumulate upwards and block the powder filling port, resulting in the inability to continue filling the powder.

[0004] In the existing technology, most powder filling devices use the method of filling the powder in multiple times to reduce the amount of powder filled at one time, and driving the product to vibrate after each filling to avoid clogging. However, this method is complicated to operate and has extremely low powder filling efficiency. Some powder filling devices also avoid clogging by driving the powder hopper used for filling to vibrate together with the product while filling the powder. However, powder filling devices using this method are often complex in structure and still have low powder filling efficiency. At the same time, powder is also easy to scatter during the filling operation, resulting in waste. Summary of the Invention

[0005] The purpose of this invention is to provide a new automatic powder filling device for product powder silos, which improves powder filling efficiency.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: an automatic powder filling device for a product powder silo, used to fill powder into the product powder silo, wherein the upper part of the powder silo is provided with a filling port communicating with the interior of the powder silo, and the powder filling device includes:

[0007] A transmission mechanism for transmitting the product, the transmission mechanism including a carrier for carrying the product;

[0008] An assembly mechanism is used to cover the cover onto the carrier and fix the carrier and the cover together. The cover has a receiving cavity for storing the powder. The lower part of the cover is provided with a powder outlet communicating with the receiving cavity. When the cover is placed on the carrier, the powder outlet is located above the powder filling port. The powder outlet and the powder filling port are in corresponding positions and communicating with each other.

[0009] A powder filling mechanism is used to fill the powder into the receiving cavity;

[0010] A vibration mechanism is used to drive the carrier, the cover, and the product to vibrate synchronously.

[0011] The powder filling device further includes a feeding station, a cap removal mechanism, and a cap return track. The feeding station is used to provide the cap required by the assembly mechanism. The cap removal mechanism is configured to remove the cap from the carrier and transfer it to the cap return track. The cap return track is configured to transport the cap to the feeding station.

[0012] In some embodiments, the powder filling device further includes:

[0013] A film-applying mechanism is used to attach the film to the upper surface of the powder hopper;

[0014] A powder removal mechanism is used to remove the powder scattered on the surface of the product.

[0015] The transmission mechanism transmits the product in a forward-to-back transmission direction, and the assembly mechanism, the powder filling mechanism, the vibration mechanism, the cap removal mechanism, the film application mechanism, and the powder cleaning mechanism are arranged sequentially along the transmission direction.

[0016] In some embodiments, connectors are provided on opposite sides of the cover along its length. The connectors extend vertically and are rotatably disposed along the length of the cover. Each connector has a locking portion that bends and extends from the lower part of the connector. Along the length of the cover, the locking portions on both sides bend toward each other. An elastic member is provided between the upper part of the connector and the cover. The elastic member is configured to provide the force required to move the upper part of the connector away from the cover. In the vertical direction, the rotatable connection between the connector and the cover is located between the elastic member and the locking portion. Connecting grooves are provided on opposite sides of the carrier. The openings of the connecting grooves face away from the carrier. When the cover is placed on the carrier, the locking portion is inserted into the connecting groove.

[0017] Furthermore, the assembly mechanism includes two clamping parts spaced apart and capable of relative movement. The two clamping parts are configured to approach each other and clamp the cover. Each clamping part is provided with a driving structure, which is configured to drive the upper part of the connector to move toward the cover during the clamping process of the two clamping parts.

[0018] Preferably, the powder filling mechanism includes a hopper containing the powder, a discharge plate fixed below the hopper, and a movable plate disposed vertically between the hopper and the discharge plate. The movable plate is movably disposed horizontally and has a first hole penetrating vertically. The discharge plate has a second hole penetrating vertically. The movable plate has at least a first position and a second position. In the first position, the first hole is connected to the hopper, and the first hole and the second hole are interconnected. In the second position, the first hole and the second hole are offset from each other.

[0019] In some embodiments, the vibration mechanism includes a vibration table for supporting the vehicle and a clamping head for fixing the vehicle located on the vibration table. The clamping head is rotatably disposed about a rotation center line extending in the vertical direction and is movable in the vertical direction. During the rotation about the rotation center line, the clamping head switches between two states: being above the vibration table and being away from the vibration table.

[0020] Preferably, the accommodating cavity is tapered, wider at the top and narrower at the bottom, and the powder outlet is connected to the lower part of the accommodating cavity.

[0021] Preferably, the cover includes a cover plate and a storage box fixed to the lower part of the cover plate. The receiving cavity is disposed in the storage box, and the powder outlet is disposed at the lower part of the storage box. The cover plate is provided with a filling hole that extends through the thickness direction. A powder filling channel is provided between the cover plate and the storage box, extending in the vertical direction and connecting the filling hole and the receiving cavity. The diameter of the filling hole is smaller than the size of the upper part of the receiving cavity, and the diameter of the powder filling channel is smaller than the size of the upper part of the receiving cavity.

[0022] Preferably, the carrier carries a plurality of the products, the cover is provided with a plurality of the receiving cavities, and the lower part of the cover is provided with a plurality of powder outlets corresponding to the receiving cavities, and the cover cooperates with the plurality of the products on the carrier.

[0023] Another objective of this invention is to provide a novel automatic powder filling method.

[0024] To achieve the above objectives, the technical solution adopted by the present invention is: an automatic powder filling method for filling powder into the powder hopper of a product, the powder filling method being implemented based on the aforementioned powder filling device, and the powder filling method comprising the following steps:

[0025] (1) Place the cover onto the carrier carrying the product;

[0026] (2) Pour the powder into the receiving cavity of the cover;

[0027] (3) Drive the carrier, the cover and the product to vibrate synchronously for a preset time or a preset number of times;

[0028] (4) Remove the cover from the carrier and transfer the removed cover to the cover return track;

[0029] (5) The cover is transported to the loading station via the cover return track;

[0030] (6) The required cover is provided from the loading station to the assembly mechanism.

[0031] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: The automatic powder filling device of the product powder hopper of the present invention uses an assembly mechanism to cover a cover with a accommodating cavity onto a carrier carrying the product. The accommodating cavity has the function of storing powder, thereby enabling the powder filling mechanism to fill a preset amount of powder into the accommodating cavity at one time. The product does not need to stay at the powder filling mechanism for too long, which improves the powder filling efficiency. The powder filled into the accommodating cavity can be filled into the powder hopper through the interconnected powder outlet and powder filling port. Even if the powder filling port is blocked, the powder that is not filled into the powder hopper can remain in the accommodating cavity. The vibration mechanism drives the cover and the product to vibrate synchronously. Under the action of vibration, not only can the blockage be eliminated so that all the powder in the accommodating cavity is filled into the powder hopper, but the powder in the powder hopper can also be evenly distributed. The powder filling device is also equipped with a cap removal mechanism and a cap return track. The cap removal mechanism removes the cap from the carrier and transfers it to the cap return track, which then transports the cap to the feeding station. In this way, the cap is recycled, making it more economical and efficient. Attached Figure Description

[0032] Appendix Figure 1 This is a three-dimensional structural diagram of a product according to a specific embodiment of the present invention;

[0033] Appendix Figure 2 This is a three-dimensional structural diagram of the product in this embodiment when it is fixed on the carrier.

[0034] Appendix Figure 3 This is a three-dimensional structural diagram of the cover body in this embodiment;

[0035] Appendix Figure 4 This is a three-dimensional structural diagram of the cover body in this embodiment from another perspective;

[0036] Appendix Figure 5 This is a three-dimensional structural diagram of the cover and the vehicle connected together.

[0037] Appendix Figure 6 This is a three-dimensional schematic diagram of a portion of the structure of a powder filling device according to a specific embodiment of the present invention;

[0038] Appendix Figure 7 For the appendix Figure 6 Enlarged view of point A in the middle;

[0039] Appendix Figure 8 For the appendix Figure 6 A top-down view;

[0040] Appendix Figure 9 This is a three-dimensional structural diagram of the assembly mechanism in this embodiment;

[0041] Appendix Figure 10 This is a three-dimensional structural diagram of the powder filling mechanism in this embodiment;

[0042] Appendix Figure 11 This is a longitudinal cross-sectional diagram of the powder filling mechanism during the powder filling operation.

[0043] Appendix Figure 12 For the appendix Figure 11 Enlarged view of point B in the middle;

[0044] Appendix Figure 13 This is a three-dimensional schematic diagram of another part of the powder filling device in this embodiment;

[0045] Appendix Figure 14 For the appendix Figure 13 A top-down view;

[0046] Appendix Figure 15 This is a three-dimensional structural diagram of the cover-removing mechanism in this embodiment;

[0047] Appendix Figure 16 This is a three-dimensional structural diagram of the powder cleaning mechanism in this embodiment;

[0048] Among them: 100, product; 110, powder silo; 120, powder filling port;

[0049] 11. Carrier; 111. Fixing structure; 112. Connecting groove; 113. First positioning groove; 12. Transfer track; 13. Cover return track; 14. Main body return track;

[0050] 2. Assembly mechanism; 201. Assembly station; 202. Loading station; 21. Assembly head; 211. Clamping part;

[0051] 3. Cover body; 31. Cover plate; 311. Filling hole; 312. Second positioning groove; 32. Storage box; 321. Receiving cavity; 322. Powder outlet; 323. First positioning pin; 33. Powder filling channel; 34. Connector; 341. Locking part; 35. Side plate;

[0052] 4. Powder filling mechanism; 401. Powder filling station; 41. Material hopper; 42. Moving plate; 421. First hole; 43. Discharge plate; 431. Second hole; 432. Second positioning pin;

[0053] 5. Vibration mechanism; 51. Vibration table; 511. Third positioning pin; 52. Pressing head; 53. Vibration drive mechanism; 54. Fan;

[0054] 6. Handling mechanism; 7. Cap removal mechanism; 71. Cap removal working head; 711. Clamping component; 8. Film application mechanism; 9. Powder removal mechanism; 10. Static elimination mechanism. Detailed Implementation

[0055] The technical solutions in the embodiments of this application will now be clearly and completely described with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art. Obviously, the embodiments described in this application are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0056] Figure 1 The product shown is a product to be filled with powder according to an embodiment of the present invention. It has a powder hopper 110 for containing powder, and a powder filling port 120 is provided at the upper part of the powder hopper 110. Powder can be poured into the powder hopper 110 through the powder filling port 120.

[0057] See Figures 6 to 14 The illustrated powder filling device is used to fill a preset amount of powder into the powder hopper 110 of product 100. It includes a conveying mechanism, an assembly mechanism 2, a powder filling mechanism 4, and a vibration mechanism 5. The conveying mechanism is used to convey product 100 and includes a carrier 11 for carrying product 100 and a conveying component for conveying the carrier 11. The assembly mechanism 2 is used to cover a cover 3 onto the carrier 11, fixing the carrier 11 and the cover 3 together. The cover 3 has a receiving cavity 321 for storing powder, and a powder outlet 322 communicating with the receiving cavity 321 is provided at the lower part of the cover 3. When the cover 3 is placed on the carrier 11, the powder outlet 322 is located above the powder filling port 120, and the two positions correspond, with the powder outlet 322 and the powder filling port 120 communicating vertically. The powder filling mechanism 4 is used to fill the powder into the receiving cavity 321. The powder filled into the receiving cavity 321 can be filled into the powder hopper 110 through the interconnected powder outlet 322 and powder filling port 120. The vibration mechanism 5 is used to drive the carrier 11, the cover 3 and the product 100 to vibrate synchronously.

[0058] The receiving cavity 321 has a storage function. In some preferred embodiments, the volume of the receiving cavity 321 is slightly larger than the volume of powder to be filled into the powder hopper 110. This allows the powder filling mechanism 4 to fill the receiving cavity 321 with the preset amount of powder at once, so that the product 100 does not need to stay at the powder filling mechanism 4 for too long, thus improving efficiency. During the powder filling process, even if the powder filling port 120 becomes blocked, the powder can remain in the receiving cavity 321. This will not affect the powder filling mechanism 4 from filling the receiving cavity 321 with powder. Furthermore, by driving the carrier 11, the cover 3, and the product 100 to vibrate through the vibration mechanism 5, the blockage can be eliminated, allowing the powder remaining in the receiving cavity 321 to continue to be poured downwards.

[0059] In this embodiment, see Figure 3 , Figure 4 As shown, the cover 3 includes a cover plate 31 and a storage box 32 fixed to the lower part of the cover plate 31. A receiving cavity 321 is disposed within the storage box 32, and a powder outlet 322 is disposed at the bottom of the storage box 32. See also... Figure 11 , Figure 12 As shown, the cover plate 31 has a through-hole 311 extending along its thickness direction. A powder filling channel 33, extending vertically and connecting the through-hole 311 and the receiving cavity 321, is provided between the cover plate 31 and the storage box 32. During the powder filling operation, the powder passes through the through-hole 311 and the powder filling channel 33 sequentially from top to bottom before entering the receiving cavity 321. By setting the powder filling channel 33, the powder filling stroke is increased, which not only controls the speed at which the powder is poured into the receiving cavity 321 but also ensures that the powder is poured into the receiving cavity 321 more evenly, preventing the powder from piling up due to a large amount of powder being poured in at once.

[0060] The arrangement of the filling hole 311 and the powder filling channel 33 also prevents powder from leaking out of the accommodating cavity 321 from the top during vibration. In some preferred embodiments, the diameter of the filling hole 311 is smaller than the size of the upper part of the accommodating cavity 321, or the diameter of the powder filling channel 33 is smaller than the size of the upper part of the accommodating cavity 321. By setting this dimensional difference, the upward movement path of the powder is suddenly reduced, further decreasing the possibility of powder leaking out from the top. In this embodiment, both the diameter of the filling hole 311 and the diameter of the powder filling channel 33 are smaller than the size of the upper part of the accommodating cavity 321.

[0061] In this embodiment, the receiving cavity 321 is conical with a wider top and a narrower bottom. The powder outlet 322 is connected to the lower part of the receiving cavity 321. By setting the receiving cavity 321 into a conical or funnel-shaped structure, it is not only convenient to receive the powder poured in from above, but also convenient for the powder to be quickly discharged downward from the powder outlet 322 under the action of gravity, effectively preventing the powder from clogging in the receiving cavity 321. In some preferred embodiments, different types of storage boxes 32 are provided. Different storage boxes 32 have different volumes of receiving cavities 321, and the storage boxes 32 can be replaced according to the powder filling requirements of different products 100, thereby maximizing the utilization of the cover 3.

[0062] The powder filling device in this embodiment is suitable for filling products such as loudspeakers with powder. See [link to relevant documentation]. Figure 1 As shown, this type of product has a long and slender shape, making it difficult to directly fix the cover 3 to the product 100. In this embodiment, the upper part of the carrier 11 is provided with a fixing structure 111, which can fix the product 100 to the carrier 11. A connecting structure is provided between the carrier 11 and the cover 3, which realizes the fixed connection between the carrier 11 and the cover 3. Through the fixing structure 111 and the connecting structure, the relative fixation between the cover 3 and the product 100 is indirectly realized, avoiding relative movement between the cover 3 and the product 100. This ensures that during powder filling and vibration, the powder outlet 322 and the powder filling outlet 120 remain connected at all times and there will be no powder leakage.

[0063] See Figures 2 to 5 As shown, the connecting structure includes connectors 34 disposed on opposite sides of the cover 3 along its length, and connecting grooves 112 disposed on opposite sides of the carrier 11. The connectors 34 extend vertically and are rotatable along the length of the cover 3. For details, see [link to documentation]. Figure 3 , Figure 4 As shown, the cover 3 has side plates 35 extending in the vertical direction on both sides. The middle part of the connector 34 is rotatably connected to the side plate 35 around the rotation center line X1. The extension direction of the rotation center line X1 is perpendicular to the length direction of the cover 3.

[0064] The connector 34 has a locking portion 341, which bends and extends from the lower part of the connector 34. Along the length of the cover 3, the locking portions 341 on both sides bend towards each other. An elastic member (not shown) is provided between the upper part of the connector 34 and the cover 3. The elastic member is configured to provide the force required to move the upper part of the connector 34 away from the cover 3. The rotatable connection between the connector 34 and the cover 3 is located between the elastic member and the locking portion 341 in the vertical direction. See also... Figure 2 , Figure 5As shown, the opening of the connecting groove 112 faces away from the carrier 11. When the cover 3 is placed on the carrier 11, the locking part 341 is inserted into the connecting groove 112.

[0065] In this embodiment, a first positioning component is provided between the cover 3 and the carrier 11 to position the two, facilitating accurate connection between the cover 3 and the carrier 11, thereby enabling accurate positioning of the cover 3 and the product 100, and allowing communication between the powder outlet 322 and the powder filling outlet 120. Specifically, the first positioning component includes a first positioning groove 113 disposed on one of the cover 3 and the carrier 11, and a first positioning pin 323 disposed on the other. In this embodiment, the first positioning groove 113 is disposed on the upper part of the carrier 11 with its opening facing upward, and the first positioning pin 323 is disposed on the lower part of the storage box 32 and extends in the vertical direction. When the cover 3 is placed on the carrier 11, the first positioning pin 323 is inserted into the first positioning groove 113.

[0066] See Figure 6 , Figure 8 As shown, the conveying mechanism conveys the product 100 in a front-to-back conveying direction, and the assembly mechanism 2, the powder filling mechanism 4, and the vibration mechanism 5 are arranged sequentially in the conveying direction. Specifically, the conveying component includes a conveying track 12 extending in the front-to-back direction. The carrier 11 conveys the product 100 from front to back on the conveying track 12. Along the conveying direction, the conveying track 12 is sequentially provided with an assembly station 201 and a powder filling station 401. When the carrier 11 is conveyed to the assembly station 201, the assembly mechanism 2 covers the cover 3 on the carrier 11 and simultaneously covers the product 100 carried by the carrier 11. When the carrier 11 is conveyed to the powder filling station 401, the powder filling mechanism 4 fills the cover 3 on the carrier 11 with powder.

[0067] In this embodiment, the powder filling device also has a feeding station 202, which provides the necessary cover 3 for the assembly mechanism 2. See also Figure 9 As shown, the assembly mechanism 2 includes two clamping parts 211 spaced apart and capable of relative movement. The two clamping parts 211 are configured to approach each other and clamp the cover 3. The assembly mechanism 2 clamps the cover 3 located at the loading station 202 through the clamping parts 211. Specifically, the assembly mechanism 2 includes an assembly working head 21, with the two clamping parts 211 located at the lower part of the assembly working head 21. The assembly working head 21 can reciprocate between the loading station 202 and the assembly station 201, thereby transferring the cover 3 from the loading station 202 to the assembly station 201.

[0068] In this embodiment, the clamping part 211 is provided with a driving structure (not shown in the figure). During the process of the two clamping parts 211 approaching each other and clamping the cover 3, the driving structure can drive the upper part of the connector 34 to move closer to the cover 3. During this process, through the lever principle, the locking part 341 of the connector 34 moves away from the cover 3, so that the lower parts of the connectors 34 on both sides open relative to each other, thereby avoiding the locking part 341 from conflicting with the product 100 or the carrier 11 during the process of driving the cover 3 downward. After the cover 3 and the carrier 11 are accurately positioned and covered on the carrier 11, the two clamping parts 211 are driven away from each other to release the clamping of the cover 3. During this process, under the action of the elastic member, the upper part of the connector 34 moves away from the cover 3. Through the lever principle, the locking part 341 located at the lower part of the connector 34 moves inward and is finally inserted into the connecting groove 112, thereby connecting the cover 3 and the carrier 11 together.

[0069] In this embodiment, the powder filling mechanism 4 includes a hopper 41 containing powder and a powder discharging component disposed below the hopper 41 for controlling the quantitative discharge of powder. The powder discharging component includes a discharge plate 43 fixed below the hopper 41 and a movable plate 42 movably disposed in the horizontal direction. In the vertical direction, the movable plate 42 is disposed between the discharge plate 43 and the hopper 41. See also Figures 10 to 12 As shown, the movable plate 42 has a first hole 421 that extends through in the vertical direction, and the material discharge plate 43 has a second hole 431 that extends through in the vertical direction.

[0070] In this embodiment, the powder filling mechanism 4 is located above the powder filling station 401, and a lifting mechanism (not shown in the figure) is provided below the powder filling station 401. When the carrier 11 is conveyed to the powder filling station 401, the lifting mechanism will lift the carrier 11 upward. Specifically, the lifting mechanism will lift the carrier 11, product 100 and cover 3 connected together upward, so that the top of the cover 3 is tightly abutted against the bottom of the material leakage plate 43. At this time, the second hole 431 is connected to the filling hole 311 on the upper part of the cover 3. By controlling the position of the moving plate 42, the powder in the hopper 41 can be poured into the receiving cavity 321.

[0071] In this embodiment, a second positioning component is provided between the powder filling mechanism 4 and the cover 3 to position the two, so that the positions of the second hole 431 and the filling hole 311 can be accurately aligned. Specifically, the second positioning component includes a second positioning pin 432 disposed at the bottom of the discharge plate 43 and a second positioning groove 312 disposed on the cover plate 31. When the powder filling mechanism 4 performs the powder filling operation, the second positioning pin 432 is inserted into the second positioning groove 312.

[0072] In this embodiment, the movable plate 42 has at least a first position and a second position. When the movable plate 42 is in the first position, the upper part of the first hole 421 is connected to the hopper 41, and the first hole 421 and the second hole 431 are interconnected. At this time, the powder in the hopper 41 can leak downwards, and the powder filling mechanism 4 can perform the powder filling operation. When the movable plate 42 moves horizontally and switches to the second position, the first hole 421 and the second hole 431 are misaligned. At this time, the upper part of the first hole 421 is no longer connected to the hopper 41, and the first hole 421 and the second hole 431 are no longer interconnected. The powder in the hopper 41 cannot leak down, and the powder filling operation of the powder filling mechanism 4 stops in this state. By controlling the time the movable plate 42 is in the first position, the volume of powder leaked by the powder filling mechanism 4 can be controlled, thereby realizing the quantitative filling of powder.

[0073] In some embodiments, the carrier 11 is provided with multiple sets of fixing structures and can carry multiple products 100. The cover 3 is correspondingly provided with multiple receiving cavities 321, and the cover 3 is provided with multiple powder outlets 322 corresponding to the receiving cavities 321. The cover 3 cooperates with the multiple products 100 on the carrier 11. The powder filling mechanism 4 can simultaneously fill powder into multiple receiving cavities 321. Specifically, the moving plate 42 is provided with multiple first holes 421 corresponding to the number of receiving cavities 321, and the material leakage plate 43 is correspondingly provided with multiple second holes 431. When the moving plate 42 is in the first position, the multiple first holes 421 are respectively connected to the multiple second holes 431. With this configuration, the powder filling device can simultaneously perform powder filling operations on multiple products 100, greatly improving the powder filling efficiency. In this embodiment, the carrier 11 can carry four products 100, and the lower part of the cover 31 is also provided with four storage boxes 32 at intervals. The powder filling mechanism 4 can realize the powder filling operation of four products 100 at one time.

[0074] In this embodiment, the powder filling device also includes an antistatic mechanism 10 that can eliminate static electricity between powder materials. The antistatic mechanism is located on one side of the powder filling mechanism 4 to ensure the smooth progress of the powder filling operation and to prevent powder materials from adhering to structures such as the second hole 431, the filling hole 311, the powder outlet 322, the powder filling port 120, and the inner wall of the powder filling channel 33 due to static electricity, thereby avoiding blockage caused by static electricity and ensuring powder filling efficiency.

[0075] In this embodiment, see Figure 6 , Figure 7As shown, the vibration mechanism 5 includes a vibration table 51 for supporting the carrier 11 and a vibration drive mechanism 53 for driving the vibration table 51 to vibrate. The powder filling device also includes a transport mechanism 6, which is used to transport the carrier 11 located on the transport mechanism to the vibration table 51. Specifically, after the powder filling process of the powder filling mechanism 4, the lifting mechanism drives the carrier 11 to move downward and transfer it to the transport track 12. The carrier 11 continues to be transported backward on the transport track 12 until it reaches the transport station. The transport mechanism 6 transports the carrier 11 located at the transport station, along with the product 100 and the cover 3 connected to the carrier 11, to the vibration table 51. After the vibration process of the vibration mechanism 5 is completed, the transport mechanism 6 transfers the carrier 11 to the transport track 12.

[0076] A third positioning assembly is provided between the vibration table 51 and the carrier 11 for accurately transferring the carrier 11 onto the vibration table 51. The third positioning assembly includes a third positioning pin 511 disposed on the upper part of the vibration table 51 and extending in the vertical direction, and a third positioning groove (not shown in the figure) disposed on the bottom of the carrier 11. The vibration mechanism 5 also includes a clamping head 52 for clamping and fixing the carrier 11 located on the vibration table 51. The clamping head 52 is rotatably disposed about a rotation center line X2 extending in the vertical direction, and the clamping head 52 is movable in the vertical direction. During the rotation about the rotation center line X2, the clamping head 52 switches between two states: above the vibration table 51 and away from the vibration table 51.

[0077] During the process of transferring the carrier 11 to the vibration table 51, the clamping head 52 rotates to a position away from the vibration table 51 to avoid affecting the transfer of the product 100. After the carrier 11 is transferred to the vibration table 51, the clamping head 52 rotates to the top of the vibration table 51, and the clamping head 52 is driven to move downward to clamp the carrier 11, preventing the carrier 11 from shifting relative to the vibration table 51 during vibration.

[0078] In this embodiment, multiple sets of vibration tables 51 are provided. Each set of vibration tables 51 can simultaneously vibrate the four products 100 carried by the carrier 11 and the cover 3 covering the carrier 11. Simultaneously, the vibration mechanism 5 can vibrate multiple carriers 11 at the same time, improving the working efficiency of the powder filling device. See also... Figure 6 , Figure 8 As shown, in this embodiment, a total of four sets of vibration tables 51 are provided. Along the left-right direction, two sets of vibration tables 51 are provided on each side of the transmission track 12, and the two sets of vibration tables 51 on each side are spaced apart along the front-back direction. See also... Figure 6As shown, the vibration mechanism 5 also includes a fan 54 disposed on one side of the vibration table 51, which can remove powder scattered on the surface of the product 100. In some embodiments, the fan 54 is specifically an ion fan, which can eliminate static electricity and facilitate the downward pouring of powder during vibration.

[0079] In this embodiment, the powder filling device also includes a cap removal mechanism 7 and a cap return track 13, see [link to documentation]. Figure 13 , Figure 14 As shown, along the conveying direction, the cap removal mechanism 7 is located behind the vibration mechanism 5, and the loading station 202 is on the cap return track 13. The cap removal mechanism 7 is used to remove the cap 3 from the carrier 11 and transfer it to the cap return track 13, which is used to convey the cap 3 to the loading station 202. With this arrangement, the cap 3 is recycled, making it more economical and efficient. See also... Figure 6 , Figure 8 As shown, in this embodiment, the cover return track 13 also extends in the front-to-back direction and is set parallel to the transmission track 12 in the left-to-right direction. The cover return track 13 passes under the vibration table 51, which greatly saves space.

[0080] In this embodiment, the cap removal mechanism 7 includes a cap removal working head 71 capable of reciprocating in the left-right direction. During its reciprocating motion in the left-right direction, the cap removal working head 71 switches between above the transmission track 12 and above the cap return track 13. See also... Figure 15 As shown, the structure of the cap removal working head 71 is similar to that of the assembly working head 21. The cap removal working head 71 is also provided with two clamping members 711 that can be relatively close to and clamp the cap 3. During the process of clamping the cap 3 with the two clamping members 711, the upper part of the connecting member 34 can be driven to move closer to the cap 3, so that the locking part 341 is disengaged from the connecting groove 112, thereby releasing the connection between the cap 3 and the carrier 11. By continuing to drive the cap 3 to move upward, the cap 3 can be removed from the carrier 11.

[0081] In this embodiment, the powder filling device is also provided with a main body return track 14 extending in the front-to-back direction. When the powder filling device malfunctions and the product 100 is not processed normally, it can be transferred to the main body return track 14. The main body return track 14 transports the product 100 in the opposite direction to the transmission direction for the purpose of recycling the product 100. After being recycled, the product 100 can be adjusted and transferred back to the transmission track 12. See also Figure 6 , Figure 8 As shown, the cover return track 13 and the main body return track 14 are respectively located on the left and right sides of the transmission track 12.

[0082] In this embodiment, see Figure 13 , Figure 16As shown, the powder filling device also includes a film-applying mechanism 8 for attaching the film to the upper surface of the powder hopper 110, and a powder-cleaning mechanism 9 for removing powder scattered on the surface of the product 100. Along the conveying direction, the film-applying mechanism 8 and the powder-cleaning mechanism 9 are sequentially arranged behind the cap-removing mechanism 7. After the cap 3 is removed from the product 100 and the carrier 11, the film-applying mechanism 8 seals the powder filling port 120 of the powder hopper 110 with a film to prevent powder from leaking out of the powder filling port 120. Then, the powder-cleaning mechanism 9 cleans the surface of the product 100, and the product 100 can proceed to the next step of processing.

[0083] When using the powder filling device described above to fill product 100 with powder, the specific steps are as follows:

[0084] S1. The cover 3 is placed on the carrier 11 carrying the product 100, ensuring that the powder outlet 322 and the powder filling outlet 120 are aligned and connected vertically. Specifically, the product 100 is fixed to the carrier 11 by a fixing structure, and the carrier 11 carrying the product 100 is transferred to the assembly station 201 by a transmission mechanism. The assembly mechanism 2 places the cover 3 on the carrier 11 located at the assembly station 201, simultaneously placing the cover 3 on top of the product 100. During this process, the cover 3 and the carrier 11 are positioned by a first positioning component, and the cover 3 and the carrier 11 are connected together by a connecting structure, ensuring that the positions of the cover 3 and the product 100 correspond and that they do not move relative to each other.

[0085] S2. The preset amount of powder is poured into the receiving cavity 321. Specifically, the conveying mechanism transports the carrier 11, which holds the product 100 and the cover 3, to the powder filling station 401. The lifting mechanism lifts the carrier 11 upwards, and the cover 3 and the powder filling mechanism 4 are positioned by the second positioning component. The powder filling mechanism 4 performs the powder filling operation by controlling the moving plate 42 to switch between the first position and the second position. The powder in the receiving cavity 321 can be poured downwards into the powder hopper 110 through the powder filling port 120. If the powder filling port 120 is blocked, the powder can remain in the receiving cavity 321.

[0086] S3. Drive the carrier 11, cover 3, and product 100 to vibrate synchronously for a preset time or number of times. Specifically, the carrier 11 is transported to the vibration table 51 by the conveying mechanism 6, the third positioning component is used to position the carrier 11 and the vibration table 51, and the clamping head 52 is used to clamp and fix the carrier 11. The vibration driving mechanism 53 drives the vibration table 51 to vibrate, thereby causing the carrier 11, product 100, and cover 3 to vibrate synchronously. The vibration can not only eliminate the blockage at the powder filling port 120, so that all the powder remaining in the accommodating cavity 321 is poured into the powder hopper 110, but also make the powder in the powder hopper 110 evenly distributed.

[0087] In summary, in this embodiment of the powder filling device, before powder filling, the assembly mechanism 2 places the cover 3 with the accommodating cavity 321 on the carrier 11 carrying the product 100. The accommodating cavity 321 has the function of storing powder. The blockage at the powder filling port 120 will not affect the powder filling operation of the powder filling mechanism 4. The powder filling mechanism 4 can fill a preset amount of powder into the accommodating cavity 321 at one time. When the powder filling port 120 is blocked, the powder that has not been filled into the powder hopper 110 can remain in the accommodating cavity 321. Driven by the vibration mechanism 5, the carrier 11, the cover 3 and the product 100 vibrate synchronously, which can not only eliminate the blockage and allow all the powder remaining in the accommodating cavity 321 to be filled into the powder hopper 110, but also make the powder in the powder hopper 110 evenly distributed. Since the powder can be poured in at once, the product 100 does not need to stay at the powder filling station 401 for too long. At the same time, the powder filling device is equipped with multiple vibration tables 51, which can vibrate multiple products 100 and the cover 3 at the same time, which greatly improves the working efficiency of the powder filling device.

[0088] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An automatic powder filling device for a product powder silo, used to fill powder into a product powder silo, wherein the upper part of the powder silo is provided with a filling port communicating with the interior of the powder silo, characterized in that: The powder filling device includes: A transmission mechanism for transmitting the product, the transmission mechanism including a carrier for carrying the product; An assembly mechanism is used to cover the cover onto the carrier and fix the carrier and the cover together. The cover has a accommodating cavity for storing the powder. The lower part of the cover is provided with a powder outlet communicating with the accommodating cavity. When the cover is placed on the carrier, the powder outlet is located above the powder filling port. The powder outlet and the powder filling port are corresponding in position and communicate with each other. The accommodating cavity is tapered, wider at the top and narrower at the bottom. The powder outlet is connected to the lower part of the accommodating cavity. The cover includes a cover plate and a storage box fixed to the lower part of the cover plate. The accommodating cavity is located in the storage box. The powder outlet is located at the lower part of the storage box. The cover plate is provided with a filling hole that extends through the thickness direction. A powder filling channel is provided between the cover plate and the storage box, extending vertically and communicating with the filling hole and the accommodating cavity. The diameter of the filling hole is smaller than the size of the upper part of the accommodating cavity, and the diameter of the powder filling channel is smaller than the size of the upper part of the accommodating cavity. A powder filling mechanism is used to fill the powder into the receiving cavity; A vibration mechanism is used to drive the carrier, the cover, and the product to vibrate synchronously. The powder filling device further includes a feeding station, a cap removal mechanism, and a cap return track. The feeding station is used to provide the cap required by the assembly mechanism. The cap removal mechanism is configured to remove the cap from the carrier and transfer it to the cap return track. The cap return track is configured to transport the cap to the feeding station.

2. The automatic powder filling device for the product powder silo according to claim 1, characterized in that: The powder filling device also includes: A film-applying mechanism is used to attach the film to the upper surface of the powder hopper; A powder removal mechanism is used to remove the powder scattered on the surface of the product. The transmission mechanism transmits the product in a forward-to-back transmission direction, and the assembly mechanism, the powder filling mechanism, the vibration mechanism, the cap removal mechanism, the film application mechanism, and the powder cleaning mechanism are arranged sequentially along the transmission direction.

3. The automatic powder filling device for the product powder silo according to claim 1, characterized in that: The cover has connectors on opposite sides along its length. These connectors extend vertically and are rotatable along the length of the cover. Each connector has a locking portion that bends and extends from its lower part, with the locking portions on both sides bending towards each other along the length of the cover. An elastic element is provided between the upper part of the connector and the cover. The elastic element is configured to provide the force required to move the upper part of the connector away from the cover. In the vertical direction, the rotatable connection between the connector and the cover is located between the elastic element and the locking part. The carrier has connecting grooves on opposite sides, with the openings of the connecting grooves facing away from the carrier. When the cover is placed on the carrier, the locking part is inserted into the connecting groove.

4. The automatic powder filling device for the product powder silo according to claim 3, characterized in that: The assembly mechanism includes two clamping parts spaced apart and capable of relative movement. The two clamping parts are configured to approach each other and clamp the cover. Each clamping part is provided with a driving structure, which is configured to drive the upper part of the connector to move closer to the cover during the clamping process of the two clamping parts clamping the cover.

5. The automatic powder filling device for the product powder silo according to claim 1, characterized in that: The powder filling mechanism includes a hopper containing the powder, a discharge plate fixed below the hopper, and a movable plate disposed vertically between the hopper and the discharge plate. The movable plate is movably disposed horizontally and has a first hole penetrating vertically. The discharge plate has a second hole penetrating vertically. The movable plate has at least a first position and a second position. When the movable plate is in the first position, the first hole is connected to the hopper and the first hole and the second hole are interconnected. When the movable plate is in the second position, the first hole and the second hole are offset from each other.

6. The automatic powder filling device for the product powder silo according to claim 1, characterized in that: The vibration mechanism includes a vibration table for supporting the vehicle and a clamping head for fixing the vehicle located on the vibration table. The clamping head is rotatably arranged about a rotation center line extending in the vertical direction, and the clamping head is also movable in the vertical direction. As the clamping head rotates around the rotation center line, it switches between two states: being above the vibration table and being away from the vibration table.

7. The automatic powder filling device for product powder silos according to any one of claims 1 to 6, characterized in that: The carrier carries multiple products, the cover is provided with multiple receiving cavities, and the lower part of the cover is provided with multiple powder outlets corresponding to the receiving cavities. The cover also cooperates with the multiple products on the carrier.

8. An automatic powder filling method for filling powder into a powder hopper of a product, characterized in that, The powder filling method is implemented based on the powder filling apparatus according to any one of claims 1 to 7, and the powder filling method includes the following steps: (1) Place the cover onto the carrier carrying the product; (2) Pour the powder into the receiving cavity of the cover; (3) Drive the carrier, the cover and the product to vibrate synchronously for a preset time or a preset number of times; (4) Remove the cover from the vehicle and transfer the removed cover to the cover return track; (5) The cover is transported to the loading station via the cover return track; (6) The required cover is provided from the loading station to the assembly mechanism.

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