A mechanism for fixed-quantity filling of down
By combining a down metering funnel with a feeding hopper, along with upper and lower agitators and a blower system, the shortcomings of down filling equipment in terms of precision control and adaptability have been solved, achieving precise metering and uniform distribution of down filling, thus improving product quality and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG LIUQIAO IND CO LTD
- Filing Date
- 2025-09-03
- Publication Date
- 2026-07-07
AI Technical Summary
Existing down filling equipment has shortcomings in the precise control of down filling amount, making it difficult to achieve precise quantitative control of single filling, resulting in large differences in product filling amount. In addition, the equipment has low adaptability, is cumbersome to operate, and affects product quality and production efficiency.
The method employs a quantitative funnel and dual methods: a quantitative funnel combined with a feeding hopper, along with upper and lower agitators and a fan system, to achieve precise control and uniform distribution of down.
It achieves precise quantitative filling of down, avoids problems of insufficient or excessive filling, ensures uniform distribution of down in the product, reduces finished product rework rate and material waste, and improves production efficiency and equipment adaptability.
Smart Images
Figure CN224467556U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to down filling equipment, and more particularly to a down quantitative filling mechanism. Background Technology
[0002] In the down processing industry, down filling equipment is the core light industrial equipment for producing down products such as down jackets and down comforters. It primarily uses high-pressure airflow or mechanical transmission to precisely fill the garments with down, synthetic fibers, and other filling materials, directly affecting the loft, warmth, and overall quality of the down products. As consumer demands for the quality of down products continue to rise, the industry has set higher standards for the automation level, filling uniformity, and anti-caking capabilities of down filling equipment.
[0003] Existing down filling equipment still faces many technical challenges in practical applications. One of the key issues restricting product quality is the clumping and caking of down within the storage structure. If clumped down is directly filled into down products, it will result in insufficient loft in certain areas, reduced warmth retention, and uneven distribution of the filling material, seriously affecting the consumer experience and the product's market competitiveness.
[0004] To address some of the aforementioned issues, relevant technological improvements have emerged within the industry. For example, the utility model patent "A Down Filling Device for Down Processing" authorized by the State Intellectual Property Office (CN 222024087 U) discloses a down filling structure comprising a down storage chamber, a stirring chamber, and an air outlet chamber. It utilizes a stirring rod and a fan positioned below the down storage chamber to break up clumps of down, and the rising airflow generated by the fan blows the broken down to a higher position within the down storage chamber, achieving a cyclical dispersal of the clumps. Simultaneously, the device forms a filling passageway through connecting pipes, a fan, and filling pipes, and includes an opening / closing door at the connecting pipe to prevent undispersed down from entering the filling process, thus mitigating the impact of down clumping on filling quality to some extent.
[0005] However, existing technologies (including the aforementioned patented technology CN 222024087 U) still have shortcomings in the precise control of down filling volume. Traditional down filling equipment mostly relies on fan suction or airflow to indirectly control the filling volume, making it difficult to achieve precise quantitative control of a single filling. This easily leads to significant differences in filling volume within the same batch of products, increasing the difficulty of quality control and the risk of material waste during production. In addition, the filling head and feeding structure of some equipment have low compatibility. For the filling requirements of different specifications of down products (such as lightweight down jackets and thick down comforters), it is necessary to frequently adjust the overall parameters of the equipment, which is cumbersome and inefficient. Therefore, developing a down filling mechanism that combines anti-caking function with precise quantitative control and greater adaptability has become an urgent technical problem to be solved in the current down processing equipment field. Utility Model Content
[0006] This invention addresses the shortcomings of existing technologies by providing a quantitative down filling mechanism.
[0007] To solve the above-mentioned technical problems, the present invention provides a solution through the following technical method:
[0008] A down filling mechanism includes a filling head, a feeding hopper installed at the end of the filling head, a detachable quantitative funnel installed on the top of the feeding hopper, the quantitative funnel being connected to the feeding hopper, an inlet hopper connected to the feeding hopper being fixed at the end of the filling head, and an air inlet connector installed at the rear end of the inlet hopper.
[0009] Preferably, the upper end of the feeding hopper is provided with a feeding port, and the unloading hopper is connected to the feeding hopper through the feeding port.
[0010] Preferably, the longitudinal cross-sectional projection shape of the inner cavity of the feeding bin is an inverted right trapezoid, and the transverse cross-sectional area of the inner cavity of the feeding bin gradually decreases from top to bottom.
[0011] Preferably, the outlet of the metering funnel extends into the feeding hopper, and an electric valve for opening or closing the outlet of the metering funnel is installed on the top of the feeding hopper.
[0012] Preferably, a lower agitator is installed at the bottom of the discharge hopper near the feeding hopper. The lower agitator includes a lower flywheel and multiple lower agitator blades. The lower flywheel is connected to the lower agitator blades via a lower pin and drives them to rotate.
[0013] Preferably, the outer end of the lower stirring blade is provided with a lower hook, all the lower stirring blades are evenly distributed on the lower bushing, and the lower bushing is fitted onto the lower pin.
[0014] Preferably, an upper agitator is also installed in the feed hopper. The upper agitator is located to the upper right of the lower agitator. The upper agitator includes an upper flywheel and multiple upper agitator blades. The upper flywheel is connected to the upper agitator blades through an upper pin and drives them to rotate. The upper flywheel rotates synchronously with the lower flywheel through a drive component.
[0015] Preferably, the outer end of the upper stirring blade is provided with an upper hook, all the upper stirring blades are evenly distributed on the upper shaft sleeve, and the upper shaft sleeve is fitted on the upper pin.
[0016] Preferably, a blower compartment is provided between the metering funnel and the feeding hopper, and two blowers are installed in the blower compartment. One blower is close to the vertical plate of the feeding hopper and blows air onto the vertical plate; the other blower is close to the inclined plate of the feeding hopper and blows air onto the inclined plate.
[0017] Preferably, a flange is installed between the filling head and the feeding hopper, and the feeding hopper is fastened to the flange with screws.
[0018] This utility model, by adopting the above technical solution, has significant technical effects:
[0019] On the one hand, the precise control of the metering funnel can avoid common defects such as "overfilling leading to fabric bulging" and "underfilling leading to poor warmth retention." On the other hand, the airflow delivery assisted by the air inlet connector allows the down to be more evenly distributed inside the product after entering the filling head, reducing the problem of local accumulation. At the same time, the feeding hopper, as an intermediate temporary storage component, can buffer the feeding rhythm between the metering funnel and the filling head, avoiding "material interruption" or "material overflow" caused by the mismatch between the feeding speed and the filling speed, further ensuring the stability of the filling process and reducing the rework rate of the finished product. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of this utility model.
[0021] Figure 2 This is a three-dimensional structural diagram of the down filling head.
[0022] Figure 3 This is a cross-sectional structural diagram of the down filling head.
[0023] Figure 4 This is a schematic diagram of the internal structure of the unloading hopper and the feeding hopper.
[0024] Figure 5 This is a schematic diagram of the external structure of the feeding hopper.
[0025] The names of the body parts referred to by the numbers in the above attached diagrams are as follows:
[0026] 10—Filling Head
[0027] 11—Feeding bin, 111—Vertical plate, 112—Inclined plate
[0028] 12—Quantitative funnel
[0029] 13—Feed bin, 131—Feed inlet
[0030] 14—Intake connector
[0031] 15—Electric Valves
[0032] 16—Lower agitator, 161—Lower flywheel, 162—Lower agitator blades, 163—Lower hook, 164—Lower bushing
[0033] 17—Upper stirrer, 171—Upper flywheel, 172—Upper stirring blade, 173—Upper hook, 174—Upper shaft sleeve
[0034] 18—Driver
[0035] 19—Wind turbine
[0036] 20—Flange
[0037] 100—Wind Turbine Compartment Detailed Implementation
[0038] The following is in conjunction with the appendix Figure 1-5 The present invention will be further described in detail with reference to the embodiments.
[0039] Example 1
[0040] A down filling mechanism includes a filling head 10, with a discharge bin 11 installed at the end of the filling head 10. The discharge bin 11 serves as a transfer bin, dispersing the down and feeding it into the next bin. A detachable metering funnel 12 is installed on the top of the discharge bin 11. The metering funnel 12 has a pre-set volume, and when the down naturally fills the metering funnel 12, the preset down weight can be obtained. The metering funnel 12 is connected to the discharge bin 11, allowing the down in the metering funnel 12 to enter the discharge bin 11. An inlet bin 13, connected to the discharge bin 11, is fixed at the end of the filling head 10, allowing the down in the discharge bin 11 to enter the inlet bin 13. An air inlet connector 14 is installed at the rear end of the inlet bin 13, connected to an air pump. The air inlet connector 14 blows air into the inlet bin 13, thereby outputting the down in the inlet bin 13 through the filling head 10. The metering funnel 12 is directly connected to the feeding hopper 11, and the volume or metering specifications of the metering funnel 12 can be set in advance according to the filling requirements of down products. The down first enters the metering funnel 12 to complete the "quantitative temporary storage", and then is stably transported to the feeding hopper 11 through the funnel, avoiding the filling deviation caused by "estimation based on experience" or "unstable down carrying amount by airflow" in traditional down filling.
[0041] The upper end of the feeding hopper 13 is provided with a feeding port 131. The unloading hopper 11 is connected to the feeding hopper 13 through the feeding port 131. The down in the unloading hopper 11 enters the feeding hopper 13 through the feeding port 131.
[0042] The longitudinal cross-sectional projection shape of the inner cavity of the feeding bin 11 is an inverted right trapezoid. The transverse cross-sectional area of the inner cavity of the feeding bin 11 gradually decreases from top to bottom. The discharge port at the bottom of the feeding bin 11 is perfectly matched with the inlet 131 of the feeding bin 13. This specific shape of the feeding bin 11 facilitates the smooth entry of down into the feeding bin 13.
[0043] The outlet of the metering funnel 12 extends into the feeding hopper 11. An electric valve 15 is installed on the top of the feeding hopper 11 to open or close the outlet of the metering funnel 12. The metering funnel 12 can be pre-set with a volume according to production needs to achieve precise pre-storage of down. Its outlet extends directly into the feeding hopper 11, which can avoid spillage or loss of down due to "path deviation" during the transfer process, and ensure that the metered down completely enters the feeding hopper 11. At the same time, the electric valve 15 can precisely control the opening and closing of the outlet of the metering funnel 12, avoiding the "delayed opening and closing timing" and "uneven opening and closing range" of traditional manual valves, which can result in excessive or insufficient down.
[0044] A lower agitator 16 is installed at the bottom of the discharge hopper 11 near the feed hopper 13. The lower agitator 16 includes a lower flywheel 161 and multiple lower agitator blades 162. In this embodiment, there are four lower agitator blades 162. The lower flywheel 161 is connected to the lower agitator blades 162 via a lower pin and drives them to rotate. The lower agitator blades 162 can break up any small clumps that may remain in the down fed into the discharge hopper 11 by the metering funnel 12, and can also prevent the down from clumping due to accumulation and compaction at the bottom of the hopper, ensuring that the down always remains fluffy. This breaking-up effect directly ensures that the down can enter the feed hopper 13 relatively smoothly, avoiding blockage at the connection between the discharge hopper 11 and the feed hopper 13 due to clumping.
[0045] The lower stirring blade 162 has a hook 163 at its outer end. The hook 163 is integrally formed with the lower stirring blade 162. All the lower stirring blades 162 are evenly distributed on the lower bushing 164. Four lower stirring blades 162 are fixed on the lower bushing 164. The lower bushing 164 is fitted on the lower pin. The lower pin rotates and drives the lower bushing 164 to rotate, thereby driving the lower stirring blades 162 to rotate. When the lower stirring blades 162 rotate, the hook 163 at the outer end can penetrate into the down accumulation layer at the bottom of the feeding bin 11. Through the action of "hooking-lifting-flipping", the down that was originally compacted and pressed tightly against the bottom of the bin due to its own weight is actively hooked up, avoiding the formation of "dead knots" or "hard clumps" that are difficult to break up at the bottom of the bin.
[0046] An upper agitator 17 is also installed inside the feed hopper 13. The upper agitator 17 is located to the upper right of the lower agitator 16. The upper agitator 17 includes an upper flywheel 171 and multiple upper agitator blades 172, with four blades in total. The upper flywheel 171 is connected to the upper agitator blades 172 via an upper pin and drives them to rotate. The upper flywheel 171 rotates synchronously with the lower flywheel 161 via a drive component 18. The cooperation between the upper agitator 17 and the lower agitator 16 creates a "double dispersing" mechanism. On the one hand, the upper agitator 17 is close to the outlet of the metering funnel 12, and can initially disperse the down through the four upper agitator blades 172 driven by the upper flywheel 171 when the metered down just enters the feeding hopper 11. This can directly handle the slight clumps that may be carried when the metering funnel 12 is discharged, and prevent the clumped down from being further compacted after entering the bottom of the feeding hopper 11. On the other hand, the lower agitator 16 disperses the down a second time at the bottom. The two layers of agitation form a full-coverage agitation range from top to bottom. There are no dead corners in the agitation, and the agglomerated structure of the down can be completely destroyed through the dual action, ensuring that the down entering the subsequent filling stage always remains fluffy.
[0047] The outer end of the upper stirring blade 172 is provided with an upper hook 173, which is integrally formed with the upper stirring blade 172. All the upper stirring blades 172 are evenly distributed on the upper bushing 174, and four upper stirring blades 172 are fixed on the upper bushing 174. The upper bushing 174 is fitted on the upper pin. The upper pin rotates and drives the upper bushing 174 to rotate synchronously, thereby driving the upper stirring blades 172 to rotate. When the upper stirring blades 172 rotate, the upper hook 173 at the outer end can actively hook the down falling from the outlet of the metering funnel 12. Whether it is down that is slightly clumped during the fall or down that is about to accumulate when it just touches the inner wall of the feed hopper 13, the upper hook 173 can break its clumped structure through the "hooking-flipping" action, achieving initial dispersal. This design avoids further compaction of the clumped down after it enters the lower part of the feed hopper 13, forming a "double guarantee" with the deep dispersal of the lower agitator 16, together ensuring that the down always remains fluffy.
[0048] A blower chamber 100 is provided between the metering funnel 12 and the feeding hopper 11. Two blowers 19 are installed in the blower chamber 100. One blower 19 is close to the vertical plate 111 of the feeding hopper 11 and blows air onto it; the other blower 19 is close to the inclined plate 112 of the feeding hopper 11 and blows air onto it. The blowing direction of the two blowers 19 not only disperses the down but also forms a directional airflow in conjunction with the structure of the feeding hopper 11, assisting in the conveying of down to the feeding hopper 13. The airflow from the blower facing the vertical plate 111 blows the down near the vertical plate 111 towards the bottom area of the hopper; the airflow from the blower facing the inclined plate 112 pushes the down downwards at the junction with the feeding hopper 13, following the inclination angle of the inclined plate 112. The combined airflow force provides continuous power to the down, allowing it to enter the feeding hopper 13 more smoothly.
[0049] A flange 20 is installed between the down filling head 10 and the feed hopper 13, and the discharge hopper 11 is fastened to the flange 20 by screws. The screw fastening method makes it easier to disassemble and assemble the discharge hopper 11. When it is necessary to clean the residual down inside the discharge hopper 11 or replace the lower agitator 16 and other parts, the discharge hopper 11 can be removed simply by removing the screws.
[0050] Example 2
[0051] Example 2 is basically the same as Example 1, except that a weighing unit is installed at the lower end of the quantitative funnel 12. The weighing unit is located between the quantitative funnel 12 and the feeding bin 11. The weighing unit can calculate the weight of down put into the quantitative funnel 12.
Claims
1. A down filling mechanism, comprising a filling head (10), wherein a feeding bin (11) is installed at the end of the filling head (10), characterized in that: A detachable metering funnel (12) is installed on the top of the feeding hopper (11). The metering funnel (12) is connected to the feeding hopper (11). The end of the filling head (10) is fixed with a feeding hopper (13) connected to the feeding hopper (11). An air inlet connector (14) is installed at the rear end of the feeding hopper (13).
2. The down filling mechanism according to claim 1, characterized in that: The upper end of the feeding hopper (13) is provided with a feeding port (131), and the unloading hopper (11) is connected to the feeding hopper (13) through the feeding port (131).
3. The down filling mechanism according to claim 1, characterized in that: The longitudinal cross-sectional projection shape of the inner cavity of the feeding bin (11) is an inverted right trapezoid, and the transverse cross-sectional area of the inner cavity of the feeding bin (11) gradually decreases from top to bottom.
4. The down filling mechanism according to claim 1, characterized in that: The outlet of the metering funnel (12) extends into the feeding bin (11), and the top of the feeding bin (11) is equipped with an electric valve (15) for opening or closing the outlet of the metering funnel (12).
5. The down filling mechanism according to claim 1, characterized in that: A lower agitator (16) is installed at the bottom of the discharge hopper (11) near the end of the feed hopper (13). The lower agitator (16) includes a lower flywheel (161) and multiple lower agitator blades (162). The lower flywheel (161) is connected to the lower agitator blades (162) through a lower pin and drives them to rotate.
6. The down filling mechanism according to claim 5, characterized in that: The outer end of the lower stirring blade (162) is provided with a lower hook (163), all the lower stirring blades (162) are evenly distributed on the lower bushing (164), and the lower bushing (164) is fitted on the lower pin.
7. A down filling mechanism according to claim 5, characterized in that: An upper agitator (17) is also installed in the feed hopper (13). The upper agitator (17) is located to the upper right of the lower agitator (16). The upper agitator (17) includes an upper flywheel (171) and multiple upper agitator blades (172). The upper flywheel (171) is connected to the upper agitator blades (172) through an upper pin and drives them to rotate. The upper flywheel (171) rotates synchronously with the lower flywheel (161) through a drive component (18).
8. A down filling mechanism according to claim 7, characterized in that: The outer end of the upper stirring blade (172) is provided with an upper hook (173), all the upper stirring blades (172) are evenly distributed on the upper bushing (174), and the upper bushing (174) is fitted on the upper pin.
9. A down filling mechanism according to claim 1, characterized in that: A blower compartment (100) is provided between the metering funnel (12) and the feeding hopper (11). Two blowers (19) are installed in the blower compartment (100). One blower (19) is close to the vertical plate (111) of the feeding hopper (11) and blows air onto the vertical plate (111); the other blower (19) is close to the inclined plate (112) of the feeding hopper (11) and blows air onto the inclined plate (112).
10. A down filling mechanism according to claim 1, characterized in that: A flange (20) is installed between the filling head (10) and the feeding bin (13), and the discharge bin (11) is fastened to the flange (20) by screws.