Down jacket down filling equipment

Abstract

The application provides a down jacket down filling equipment, which comprises a down filling machine main body and a down filling pipe installed on the down filling machine main body, wherein the down filling pipe comprises a first pipe body, a second pipe body, a first shell, a plurality of extension arms, a rotating seat, a cleaning mechanism and a rotating driving mechanism. The rotating seat and the plurality of extension arms provided with air grooves are designed in the down filling pipe, compressed air introduced into the first installation cavity by the cleaning mechanism is blown to the first exhaust hole from the air channel and the air groove, so that the down blocked in the first exhaust hole is blown out, the first exhaust hole is prevented from being blocked, the exhaust effect of the down filling pipe in the down filling process is effectively improved, and the down filling efficiency is improved. Meanwhile, the rotating seat and the extension arms are driven to rotate by the rotating driving mechanism, even in the down filling process, some down in the down jacket pieces can be effectively prevented from entering the first exhaust hole along the airflow, and the excess air can be normally exhausted from the first exhaust hole between the adjacent two extension arms.

Description

A down filling device for down jackets Technical Field

[0001] This invention relates to the field of down filling equipment technology, and specifically to a down filling equipment for down jackets. Background Technology

[0002] A down filling machine is a machine specifically designed for making down jackets. It works by using high-pressure airflow inside the machine to draw down into the machine and then filling the down into the cut pieces of the down jacket through a filling tube.

[0003] Since the down is injected into the down jacket panels through the filling tube by a high-pressure airflow, the air inside the down jacket panels needs to be expelled in time during the filling process. Otherwise, if excess air remains inside the down jacket panels, the panels will expand excessively, preventing the down from being injected and thus affecting the filling effect.

[0004] Therefore, existing down filling tubes typically consist of an inner tube fitted with an outer tube, which has vent holes visible on its surface, forming an venting chamber between the inner and outer tubes. During down filling, the operator places a piece of down clothing over part of the outer tube. In this way, during filling, air inside the down clothing piece enters the venting chamber through the covered vent holes and is eventually expelled to the outside through the uncovered vent holes.

[0005] However, during the down filling process, the down feathers inside the down jacket panels flow towards the vents with the airflow, causing blockages. If these vents are not cleared in time, air cannot escape smoothly from the down jacket panels during subsequent filling operations, leading to over-expansion and affecting normal filling. Current methods for clearing these blockages typically require manual intervention during machine downtime, involving disassembling the filling tubes. This not only increases maintenance costs but also impacts production efficiency. Summary of the Invention

[0006] In view of the deficiencies in the prior art, the purpose of this invention is to provide a down filling device for down jackets, so as to realize the automatic unclogging of the exhaust hole of the filling tube without stopping the machine and ensuring the normal operation of the filling tube.

[0007] To achieve the above objectives, the present invention provides a down filling device for down jackets, comprising a down filling machine body and a down filling tube installed on the down filling machine body. The down filling tube includes a first tube body with an inlet and an outlet at both ends; a second tube body fixedly sleeved on the first tube body, forming a first exhaust chamber between the second tube body and the first tube body, and having a plurality of first exhaust holes communicating with the first exhaust chamber on the side wall of the second tube body; and a first housing fixedly sleeved on the first tube body, forming a first mounting cavity between the first housing and the first tube body, the first housing being connected to the end of the second tube body near the inlet.

[0008] Multiple extension arms are disposed within the first exhaust chamber and arranged in a circular array along the axis of the first tube. The two ends of each extension arm are respectively close to the first mounting chamber and the discharge port. Each extension arm has a first sidewall that fits against the inner wall of the second tube, and the first sidewall has a recessed air groove. A rotating seat connected to the multiple extension arms is rotatably sleeved outside the first tube and located within the first mounting chamber. The rotating seat separates the first mounting chamber from the first exhaust chamber. The rotating seat has multiple air passages, the number of which corresponds to the number of extension arms. The air passages respectively connect the first mounting chamber and the air groove. A cleaning mechanism can introduce compressed air into the first mounting chamber, causing the compressed air to sequentially blow from the air passages and the air groove towards the inner wall of the second tube. A rotation drive mechanism is used to drive the rotating seat to rotate around the axis of the first tube.

[0009] Preferably, the system further includes a second housing, which is fixedly sleeved on the outside of the first tube and forms a second mounting cavity between the second housing and the first tube. The second housing is connected to the end of the first housing near the feed inlet. The rotating seat extends into the second mounting cavity and separates the first mounting cavity from the second mounting cavity. The rotary drive mechanism includes a first gear, a second gear, and a drive motor. The first gear and the second gear are both disposed in the second mounting cavity. The first gear is fixedly sleeved on the outside of the rotating seat. The second gear is rotatably disposed on the second housing and meshes with the first gear. The drive motor is disposed on the second housing and connected to the second gear.

[0010] Preferably, the system further includes a third tube and a fourth tube. The third tube is fixedly sleeved outside the first tube and forms a second exhaust chamber between the third tube and the first tube. The third tube is connected to the end of the second housing near the feed inlet. The first tube has a plurality of second exhaust holes on its wall inside the second exhaust chamber. The second exhaust chamber communicates with the first tube through the second exhaust holes. The fourth tube is disposed on the third tube and communicates with the second exhaust chamber. The fourth tube has a first valve body.

[0011] Preferably, the rotating seat has a first annular block and a second annular block on the outer wall of the first mounting cavity. The first annular block separates the first mounting cavity from the first exhaust cavity. The second annular block divides the first mounting cavity into a first chamber and a second chamber. The second chamber is located between the first chamber and the first exhaust chamber. The air passage connects the first chamber and the air groove respectively.

[0012] The first annular stop block is provided with a plurality of first feed holes, and the rotating seat is provided with a plurality of second feed holes. The number of the first feed holes and the second feed holes corresponds to the number of the air passages. The first feed holes are located between two adjacent extension arms, and the second feed holes are located in the second chamber and communicate with the air passages. The system also includes a blocking mechanism, which is used to simultaneously block or open the first feed holes and the second feed holes. The cleaning mechanism can remove down from the first mounting chamber and the first exhaust chamber.

[0013] Preferably, the blocking mechanism includes a blocking cylinder and an expansion / contraction assembly. The blocking cylinder is movably sleeved outside the rotating seat and located within the second chamber. A third annular stop is provided on the outer side wall of the blocking cylinder. The expansion / contraction assembly has an expanded state and a contracted state. When the expansion / contraction assembly is in the expanded state, it causes the blocking cylinder to block the second feed hole and the third annular stop to block the first feed hole. When the expansion / contraction assembly is in the contracted state, it causes the blocking cylinder to open the second feed hole and the third annular stop to open the first feed hole.

[0014] Preferably, the expansion / contraction assembly includes an airbag, a fifth tube, a first air pump, and an elastic element. The airbag and the elastic element are both located between the second annular block and the third annular block. The fifth tube is disposed on the first housing and is connected to the airbag and the first air pump, respectively. The first air pump is used to drive the airbag to expand or contract. The elastic element is sleeved on the sealing cylinder and is connected to the second annular block and the third annular block, respectively. The elastic element is used to make the third annular block tend to move towards the second annular block.

[0015] Preferably, the extension arm has a second sidewall on the side facing the first tube body, and the second sidewall is attached to the outer sidewall of the first tube body; the rotating seat has a plurality of ramps on the end face facing the first exhaust chamber, the number of ramps corresponding to the number of first feed holes, and the ramps are connected to the corresponding first feed holes.

[0016] Preferably, the cleaning mechanism includes a sixth tube, a second air pump, and a collection component. The sixth tube is disposed on the first housing and has a first interface, a second interface, and a third interface. The first interface communicates with the first chamber, and the second interface and the third interface are respectively connected to the second air pump. The collection component is disposed between the third interface and the second air pump. A second valve body is disposed between the second interface and the second air pump, and a third valve body is disposed between the collection component and the second air pump.

[0017] The beneficial effects of this invention are:

[0018] This invention discloses a down filling device for down jackets. By designing a rotating seat and multiple extension arms with air grooves inside the filling tube, compressed air introduced into the first mounting cavity by the cleaning mechanism blows through the air passages and air grooves towards the first exhaust port, thereby blowing out down that is blocked in the first exhaust port and preventing blockage. This effectively improves the exhaust effect of the filling tube during the filling process, eliminating the need for manual unblocking of the filling tube and increasing filling efficiency. Simultaneously, the rotating drive mechanism rotates the rotating seat and extension arms, effectively preventing some down from the down jacket pieces from entering the first exhaust port with the airflow even during filling. Excess air can be normally discharged from the first exhaust port between two adjacent extension arms, without affecting the normal discharge of excess air from the down jacket pieces, ensuring the normal operation of the filling tube. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0020] Figure 1 is a schematic diagram of the structure of a down filling tube provided in an embodiment of the present invention;

[0021] Figure 2 is a structural schematic diagram of the first tube body, the second tube body, the first shell, the second shell, the third tube body, and the fourth tube body;

[0022] Figure 3 is a partial schematic diagram of the state shown in Figure 2;

[0023] Figure 4 is a cross-sectional view of one side of the discharge port;

[0024] Figure 5 is a schematic diagram of the structure of the rotating seat and the extension arm in cooperation;

[0025] Figure 6 is a partial schematic diagram of the state shown in Figure 5;

[0026] Figure 7 is a side view of the rotary seat;

[0027] Figure 8 is a schematic diagram of the AA cross section in Figure 7;

[0028] Figure 9 is a schematic diagram of the BB cross section in Figure 7;

[0029] Figure 10 is a schematic diagram of the CC cross-section in Figure 7;

[0030] Figure 11 is a schematic diagram of the DD cross section in Figure 7;

[0031] Figure 12 is a cross-sectional schematic diagram of the cooperation between the blocking mechanism and the rotating seat;

[0032] Figure 13 is a schematic diagram of the sealing cylinder structure;

[0033] Figure 14 is a cross-sectional view of the sealing cylinder when the first and second feed holes are opened.

[0034] Figure 15 is a cross-sectional schematic diagram of the down filling tube;

[0035] Figure 16 is a partial schematic diagram of the state shown in Figure 15;

[0036] Figure 17 is a structural schematic diagram of the down filling tube from another perspective;

[0037] Figure label:

[0038] 10. First tube body; 101. Inlet; 102. Outlet; 103. Second vent; 20. Second tube body; 201. First vent; 30. First housing; 40. Extension arm; 401. Air groove; 50. Rotating seat; 501. Air passage; 502. First annular stop; 503. Second annular stop; 504. First inlet; 505. Second inlet; 506. Ramp; 507. Fourth annular stop; 60. Cleaning mechanism; 601. Sixth tube body; 70. Rotation Drive mechanism; 701, first gear; 702, second gear; 703, drive motor; 81, first exhaust chamber; 82, first mounting chamber; 821, first cavity; 822, second cavity; 83, second mounting chamber; 84, second exhaust chamber; 90, second housing; 100, third tube; 110, fourth tube; 120, shielding mechanism; 1201, sealing cylinder; 1202, third annular stop; 1203, airbag; 1204, fifth tube; 1205, elastic element. Detailed Implementation

[0039] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0040] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0041] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0042] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly defined.

[0043] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0045] As shown in Figures 1-17, in one embodiment of the present invention, a down filling device for down jackets is provided, including a down filling machine body (not shown in the figures) and a down filling tube installed on the down filling machine body. The down filling machine body is prior art and will not be described in detail in this embodiment. The down filling tube includes a first tube body 10, a second tube body 20, a first housing 30, multiple extension arms 40, a rotating seat 50, a cleaning mechanism 60, and a rotating drive mechanism 70.

[0046] The first tube 10 has an inlet 101 and an outlet 102 at its two ends, respectively. The second tube 20 is fixedly sleeved on the outside of the first tube 10, and a first exhaust chamber 81 is formed between the second tube 20 and the first tube 10. Several first exhaust holes 201 communicating with the first exhaust chamber 81 are opened on the side wall of the second tube 20. The first housing 30 is fixedly sleeved on the outside of the first tube 10, and a first mounting cavity 82 is formed between the first housing 30 and the first tube 10. The first housing 30 is connected to the end of the second tube 20 near the inlet 101.

[0047] Four extension arms 40 are disposed in the first exhaust chamber 81 and arranged in a ring array along the axis of the first pipe body 10. The two ends of the extension arms 40 are close to the first mounting chamber 82 and the discharge port 102, respectively. The extension arms 40 are provided with a first sidewall that fits against the inner sidewall of the second pipe body 20. The first sidewall is recessed to form an air groove 401.

[0048] The rotating seat 50 is connected to four extension arms 40. The rotating seat 50 is rotatably sleeved outside the first tube body 10 and located within the first mounting cavity 82. The rotating seat 50 separates the first mounting cavity 82 from the first exhaust cavity 81. The rotating seat 50 has four air passages 501, the number of which corresponds to the number of extension arms 40. The air passages 501 connect to the first mounting cavity 82 and the air grooves 401, respectively. The cleaning mechanism 60 can introduce compressed air into the first mounting cavity 82, causing the compressed air to sequentially blow from the air passages 501 and the air grooves 401 towards the inner wall of the second tube body 20. The rotation drive mechanism 70 drives the rotating seat 50 to rotate around the axis of the first tube body 10.

[0049] During the down filling process, the operator first places the down jacket piece to be filled over part of the second tube 20. Then, the down filling machine transports the weighed down through airflow from the inlet 101 into the first tube 10 and from the outlet 102 into the down jacket piece to be filled. Excess air entering the down jacket piece with the down will enter the first exhaust chamber 81 through the first exhaust hole 201 covered by the down jacket piece, and finally be discharged to the outside through the first exhaust hole 201 not covered by the down jacket piece. In this way, the down filling efficiency is avoided due to the down jacket piece expanding too quickly during the down filling process.

[0050] During the process described above, down feathers may also enter the first exhaust port 201 with the airflow, causing it to become blocked. At this point, the cleaning mechanism 60 can be activated to introduce compressed air into the first mounting cavity 82. Once inside the cavity, the compressed air is blown sequentially from each air passage 501 and each air groove 401 towards the inner wall of the second tube 20. Simultaneously, the rotary drive mechanism 70 drives the rotating seat 50 to rotate. As the extension arm 40 rotates along the axis of the first tube 10, the compressed air blown from the air grooves 401 will blow the down feathers blocked in the first exhaust port 201 out of the second tube 20, thus preventing blockage and ensuring the effective exhaust of the first exhaust port 201.

[0051] Since the first sidewall of the extension arm 40 is attached to the inner sidewall of the second tube 20, the compressed air blown out of the air groove 401 can only be blown out of the second tube 20 through the first exhaust port 201, and will basically not be blown into the first exhaust chamber 81. Therefore, even if the down jacket piece is partially covered by the second tube 20 during the filling process, the rotating seat 50 drives the four extension arms 40 to rotate and blow out compressed air. The air that enters the down jacket piece with the down can also enter the first exhaust chamber 81 through the first exhaust port 201 between two adjacent extension arms 40, and finally be discharged to the outside through the first exhaust port 201 that is not covered by the down jacket piece. In this way, the normal discharge of excess air inside the down jacket piece will not be affected, ensuring the filling effect of the down jacket piece. The rotating extension arm 40 will only blow out the down in the first exhaust port 201 opposite to the air groove 401, thus not affecting the normal filling process.

[0052] This embodiment discloses a down filling device for down jackets. By designing a rotating seat 50 and multiple extension arms 40 with air grooves 401 inside the filling tube, compressed air introduced into the first mounting cavity 82 by the cleaning mechanism 60 is blown from the air passage 501 and air grooves 401 towards the first exhaust port 201. This blows out the down that is blocked in the first exhaust port 201, preventing blockage and effectively improving the exhaust effect of the filling tube during the filling process. It eliminates the need for manual unblocking of the filling tube by stopping the machine, thus improving filling efficiency. Simultaneously, the rotating drive mechanism 70 drives the rotating seat 50 and extension arms 40 to rotate. Even during the filling process, it effectively prevents some down from the down jacket pieces from entering the first exhaust port 201 with the airflow. Excess air can be normally discharged from the first exhaust port 201 between two adjacent extension arms 40, without affecting the normal discharge of excess air from the down jacket pieces, ensuring the normal operation of the filling tube.

[0053] In one embodiment, referring to Figures 3 and 16, the filling tube further includes a second housing 90, which is fixedly sleeved outside the first tube 10 and forms a second mounting cavity 83 between the second housing 90 and the first tube 10. The second housing 90 is connected to one end of the first housing 30 near the feed inlet 101. A rotating seat 50 extends into the second mounting cavity 83, and a fourth annular stop 507 is provided on the outer side wall of the rotating seat 50, which separates the first mounting cavity 82 from the second mounting cavity 83. The rotary drive mechanism 70 includes a first gear 701, a second gear 702, and a drive motor 703. Both the first gear 701 and the second gear 702 are located in the second mounting cavity 83. The first gear 701 is fixedly sleeved outside the rotating seat 50, and the second gear 702 is rotatably mounted on the second housing 90 and meshes with the first gear 701. The drive motor 703 is a micro geared motor, which is mounted on the second housing 90 and connected to the second gear 702.

[0054] After the drive motor 703 starts, it drives the first gear 701 to rotate through the second gear 702, thereby causing the rotating seat 50 and the four extension arms 40 to rotate around the axis of the first tube 10. When compressed air enters the first mounting cavity 82, it is blocked by the fourth annular block 507, so it can only enter the four air channels 501 and the four air grooves 401, which improves the cleaning effect on the first exhaust port 201.

[0055] In one embodiment, the filling tube further includes a third tube body 100 and a fourth tube body 110. The third tube body 100 is fixedly sleeved outside the first tube body 10, and a second venting chamber 84 is formed between the third tube body 100 and the first tube body 10. The third tube body 100 is connected to one end of the second housing 90 near the feed inlet 101. The first tube body 10 has a plurality of second venting holes 103 on its tube wall located inside the second venting chamber 84, and the second venting chamber 84 communicates with the first tube body 10 through the second venting holes 103. The fourth tube body 110 is disposed on the third tube body 100 and communicates with the second venting chamber 84. The fourth tube body 110 is provided with a first valve body (not shown in the figure).

[0056] When filling small-sized down jacket pieces, the operator can first open the first valve body to allow down and airflow into the first tube 10. Part of the airflow will then exit through the second exhaust port 103, passing sequentially through the second exhaust chamber 84 and the fourth tube 110. This allows some airflow to be expelled before the down and airflow enter the down jacket piece, preventing excessive expansion of the small-sized down jacket piece during filling and thus avoiding affecting the filling effect. However, since the second exhaust port 103 is close to the feed inlet 101, and the down and airflow flow rate is relatively fast upon entering the first tube 10, the second exhaust port 103 only serves as an auxiliary venting point; most of the excess airflow still needs to be discharged through the first exhaust port 201.

[0057] In one embodiment, referring to Figures 6, 12, and 16, the outer wall of the rotating seat 50 located within the first mounting cavity 82 is provided with a first annular block 502 and a second annular block 503. The first annular block 502 separates the first mounting cavity 82 from the first exhaust cavity 81. The second annular block 503 divides the first mounting cavity 82 into a first chamber 821 and a second chamber 822. The second chamber 822 is located between the first chamber 821 and the first exhaust cavity 81. The air passage 501 connects the first chamber 821 and the air groove 401 respectively.

[0058] The first annular stop 502 is provided with four first feed holes 504, and the rotating seat 50 is provided with four second feed holes 505. The number of first feed holes 504 and second feed holes 505 corresponds to the number of air passages 501. The first feed holes 504 are located between two adjacent extension arms 40, and the second feed holes 505 are located in the second chamber 822 and communicate with the air passages 501. The down filling tube also includes a blocking mechanism 120, which is used to simultaneously block or open the first feed holes 504 and the second feed holes 505. The cleaning mechanism 60 can suck out the down in the first mounting chamber 82 and the first exhaust chamber 81.

[0059] During the down filling process, excess air that enters the down jacket panel with the down will enter the first exhaust chamber 81 through the first exhaust hole 201 wrapped by the down jacket panel. At the same time, down will also enter the first exhaust hole 201 and the first exhaust chamber 81 with the airflow, causing blockage of the first exhaust hole 201 and accumulation in the first exhaust chamber 81.

[0060] Therefore, by further improving the structure of the rotating seat 50, after the blocking mechanism 120 opens the first feed hole 504 and the second feed hole 505, the cleaning mechanism 60 is adjusted to have a suction function. This negative pressure draws down feathers between the two adjacent extension arms 40 into the second chamber 822 through the first feed hole 504, and then into the air passage 501 through the second feed hole 505. Together with the down feathers accumulated in the air groove 401, they flow through the air passage 501 into the first chamber 821 and are discharged outside the first housing 30. This achieves the cleaning and recovery of down feathers in the first exhaust chamber 81, the first exhaust hole 201, and the air groove 401. Simultaneously, cleaning is performed without disassembling the filling tube, saving time.

[0061] During the down filling process, the cleaning mechanism 60 needs to have the function of introducing compressed air. At this time, the blocking mechanism 120 will block the first feed hole 504 and the second feed hole 505, so that the compressed air can only flow from the first chamber 821 and the air passage 501 to the air groove 401 in sequence, and will not enter the space between the second chamber 822 and the two adjacent extension arms 40 through the second feed hole 505. This ensures the cleaning effect of the first exhaust hole 201 and the normal exhaust of the down filling tube.

[0062] In one embodiment, referring to Figures 12-14, the blocking mechanism 120 includes a blocking cylinder 1201 and an expansion / contraction assembly. The blocking cylinder 1201 is movably sleeved outside the rotating seat 50 and located within the second chamber 822. A third annular stop 1202 is provided on the outer side wall of the blocking cylinder 1201. The expansion / contraction assembly has an expanded state and a contracted state. When the expansion / contraction assembly is in the expanded state, it causes the blocking cylinder 1201 to block the second feed hole 505 and the third annular stop 1202 to block the first feed hole 504. When the expansion / contraction assembly is in the contracted state, it causes the blocking cylinder 1201 to open the second feed hole 505 and the third annular stop 1202 to open the first feed hole 504.

[0063] Specifically, the expansion / contraction assembly includes an airbag 1203, a fifth tube 1204, a first air pump, and an elastic element 1205. Both the airbag 1203 and the elastic element 1205 are located between the second annular stop 503 and the third annular stop 1202. The airbag 1203 has an annular structure. The fifth tube 1204 is mounted on the first housing 30 and connects to both the airbag 1203 and the first air pump. The first air pump drives the airbag 1203 to expand or contract. The elastic element 1205 is sleeved on the outside of the sealing cylinder 1201 and connects to both the second annular stop 503 and the third annular stop 1202. The elastic element 1205 is used to give the third annular stop 1202 a tendency to move towards the second annular stop 503.

[0064] When the airbag 1203 is in a contracted state, the sealing cylinder 1201 opens the second feed port 505, and the third annular block 1202 also opens the first feed port 504. When the first air pump introduces gas into the airbag 1203, the airbag 1203 inflates and expands. The expanded airbag 1203 pushes against the third annular block 1202, thereby causing the sealing cylinder 1201 and the third annular block 1202 to move towards the first annular block 502, and also causing the elastic element 1205 to deform further.

[0065] When the third annular stop 1202 abuts against the first annular stop 502, the third annular stop 1202 will block the four first feed holes 504 on the first annular stop 502, and the sealing cylinder 1201 will block the four second feed holes 505 on the rotating seat 50. When the first air pump discharges the air from the airbag 1203, the elastic element 1205 will drive the sealing cylinder 1201 to reset, thereby opening the first feed holes 504 and the second feed holes 505.

[0066] Therefore, when it is necessary to clean the down in the air groove 401 and the first exhaust chamber 81, the first air pump will discharge the gas in the air bag 1203, causing the air bag 1203 to contract, so that the sealing cylinder 1201 will open the first feed hole 504 and the second feed hole 505.

[0067] During the filling process, the cleaning mechanism 60 needs to have the function of introducing compressed air. At this time, the first air pump will inflate the air bag 1203, thereby blocking the first feed hole 504 and the second feed hole 505 through the sealing cylinder 1201. This ensures that the compressed air can only flow from the first chamber 821 and the air passage 501 to the air groove 401 in sequence, and will not enter the space between the second chamber 822 and the two adjacent extension arms 40 through the second feed hole 505.

[0068] In one embodiment, the extension arm 40 has a second sidewall on the side facing the first tube 10, and the second sidewall fits against the outer sidewall of the first tube 10. The rotating seat 50 has multiple ramps 506 on its end face facing the first exhaust chamber 81, the number of ramps 506 corresponding to the number of first feed holes 504, and the ramps 506 are connected to the corresponding first feed holes 504. This structural design facilitates the flow of down between the two extension arms 40s along the ramps 506 into the first feed holes 504, thereby improving the cleaning effect on the down.

[0069] In one embodiment, the cleaning mechanism 60 includes a sixth tube 601, a second air pump, and a collector (not shown in the figures). The sixth tube 601 is mounted on the first housing 30 and has a first interface, a second interface, and a third interface. The first interface communicates with the first chamber 821, and the second and third interfaces are respectively connected to the second air pump. The collector is located between the third interface and the second air pump. A second valve body (not shown in the figures) is provided between the second interface and the second air pump, and a third valve body (not shown in the figures) is provided between the collector and the second air pump. When the second valve body is open and the third valve body is closed, the second air pump supplies compressed air to the second interface. When the second valve body is closed and the third valve body is open, down in the first exhaust chamber 81 is sucked into the collector.

[0070] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A down filling device for down jackets, comprising a filling machine body and a filling tube installed on the filling machine body, characterized in that, The filling tube includes: a first tube body (10) with an inlet (101) and an outlet (102) at both ends; a second tube body (20) fixedly sleeved outside the first tube body (10) and forming a first exhaust chamber (81) between the second tube body (10) and the first tube body (10), wherein a plurality of first exhaust holes (201) communicating with the first exhaust chamber (81) are opened on the side wall of the second tube body (20); and a first housing (30) fixedly sleeved outside the first tube body (10) and forming a first mounting cavity (82) between the first tube body (10) and the first housing (30) and the second tube body (20) are close to the inlet. One end of the outlet (101) is connected; multiple extension arms (40) are provided in the first exhaust chamber (81) and arranged in a ring array along the axis of the first pipe body (10). The two ends of the extension arms (40) are close to the first mounting cavity (82) and the discharge port (102) respectively. The extension arm (40) is provided with a first sidewall that fits against the inner sidewall of the second pipe body (20). The first sidewall is recessed to form an air groove (401); a rotating seat (50) connected to the multiple extension arms (40) is rotatably sleeved outside the first pipe body (10) and located in the first mounting cavity (82). The rotating seat (50) separates the first exhaust chamber (81) from the second pipe body (10). The system includes an installation cavity (82) and a first exhaust cavity (81). The rotating seat (50) has multiple air passages (501), the number of which corresponds to the number of the extension arms (40). Each air passage (501) connects to the first installation cavity (82) and the air groove (401). A cleaning mechanism (60) can introduce compressed air into the first installation cavity (82), causing the compressed air to sequentially blow from the air passages (501) and the air groove (401) towards the inner wall of the second tube (20). A rotation drive mechanism (70) drives the rotating seat (50) to rotate around the first tube (10). The axis rotates; the rotating seat (50) is located on the outer wall of the first mounting cavity (82) and is provided with a first annular block (502) and a second annular block (503). The first annular block (502) separates the first mounting cavity (82) from the first exhaust cavity (81); the second annular block (503) divides the first mounting cavity (82) into a first chamber (821) and a second chamber (822). The second chamber (822) is located between the first chamber (821) and the first exhaust cavity (81). The air passage (501) is connected to the first chamber (821) and the air groove (401) respectively.The first annular stop (502) is provided with a plurality of first feed holes (504), and the rotating seat (50) is provided with a plurality of second feed holes (505). The number of the first feed holes (504) and the second feed holes (505) corresponds to the number of the air passages (501). The first feed holes (504) are located between two adjacent extension arms (40), and the second feed holes (505) are located in the second chamber (822) and communicate with the air passages (501). The system also includes a blocking mechanism (120), which is used to simultaneously block or open the first feed holes (504) and the second feed holes (505). The cleaning mechanism (60) can remove down from the first mounting cavity (82) and the first exhaust cavity (81).

2. The down filling equipment for down jackets according to claim 1, characterized in that, It also includes a second housing (90), which is fixedly sleeved on the outside of the first tube (10) and forms a second mounting cavity (83) between the second housing (90) and the first tube (10). The second housing (90) is connected to the end of the first housing (30) near the feed port (101). The rotating seat (50) extends into the second mounting cavity (83) and separates the first mounting cavity (82) from the second mounting cavity (83). The rotating drive mechanism (70) includes a first gear (701), a second gear (702) and a drive motor (703). The first gear (701) and the second gear (702) are both disposed in the second mounting cavity (83). The first gear (701) is fixedly sleeved on the outside of the rotating seat (50). The second gear (702) is rotatably disposed on the second housing (90) and meshes with the first gear (701). The drive motor (703) is disposed on the second housing (90) and connected to the second gear (702).

3. The down filling equipment for down jackets according to claim 2, characterized in that, It also includes a third tube (100) and a fourth tube (110). The third tube (100) is fixedly sleeved outside the first tube (10) and forms a second exhaust chamber (84) between it and the first tube (10). The third tube (100) is connected to the end of the second housing (90) near the feed port (101). The first tube (10) has a plurality of second exhaust holes (103) on its tube wall located in the second exhaust chamber (84). The second exhaust chamber (84) is connected to the first tube (10) through the second exhaust holes (103). The fourth tube (110) is disposed on the third tube (100) and is connected to the second exhaust chamber (84). The fourth tube (110) is provided with a first valve body.

4. The down filling equipment for down jackets according to claim 1, characterized in that, The blocking mechanism (120) includes a blocking cylinder (1201) and an expansion and contraction assembly. The blocking cylinder (1201) is movably sleeved outside the rotating seat (50) and located inside the second chamber (822). The outer side wall of the blocking cylinder (1201) is provided with a third annular stop (1202). The expansion and contraction assembly has an expanded state and a contracted state. When the expansion and contraction assembly is in the expanded state, the expansion and contraction assembly causes the blocking cylinder (1201) to block the second feed hole (505) and causes the third annular stop (1202) to block the first feed hole (504). When the expansion and contraction assembly is in the contracted state, the expansion and contraction assembly causes the blocking cylinder (1201) to open the second feed hole (505) and causes the third annular stop (1202) to open the first feed hole (504).

5. The down filling device for down jackets according to claim 4, characterized in that, The expansion and contraction assembly includes an airbag (1203), a fifth tube (1204), a first air pump, and an elastic element (1205). The airbag (1203) and the elastic element (1205) are both located between the second annular block (503) and the third annular block (1202). The fifth tube (1204) is disposed on the first housing (30) and is connected to the airbag (1203) and the first air pump respectively. The first air pump is used to drive the airbag (1203) to expand or contract. The elastic element (1205) is sleeved on the sealing cylinder (1201) and is connected to the second annular block (503) and the third annular block (1202) respectively. The elastic element (1205) is used to make the third annular block (1202) tend to move toward the second annular block (503).

6. The down filling equipment for down jackets according to claim 1, characterized in that, The extension arm (40) has a second sidewall on the side facing the first tube (10), and the second sidewall is attached to the outer sidewall of the first tube (10); the rotating seat (50) has a plurality of ramps (506) on the end face facing the first exhaust chamber (81), the number of ramps (506) corresponds to the number of the first feed holes (504), and the ramps (506) are connected to the corresponding first feed holes (504).

7. The down filling equipment for down jackets according to claim 1, characterized in that, The cleaning mechanism (60) includes a sixth tube (601), a second air pump, and a collection component. The sixth tube (601) is disposed on the first housing (30). The sixth tube (601) has a first interface, a second interface, and a third interface. The first interface is connected to the first chamber (821). The second interface and the third interface are respectively connected to the second air pump. The collection component is disposed between the third interface and the second air pump. A second valve body is disposed between the second interface and the second air pump. A third valve body is disposed between the collection component and the second air pump.

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