A filling device

Abstract

The present invention provides a filling device comprising: a buffer hopper, below which is connected a horizontal conveying mechanism and equipped with a first material level sensor; a filling frame, on which is mounted a metering cone hopper and connected to the horizontal conveying mechanism; a filling head disposed at the lower end of the metering cone hopper, comprising a filling tube and a screw disposed within the filling tube; a drive assembly for rotating the screw, disposed within a power box, within which is disposed a second material level sensor for detecting the level of material within the metering cone hopper; and an anti-cup hanging assembly disposed outside the filling tube and for separating the cup body from the filling tube. The present invention solves the problems of the complex structure and low filling efficiency of prior art capsule coffee filling devices.

Description

Technical Field

[0001] The present invention relates to the field of powder filling, and more particularly to a filling device. Background Art

[0002] Capsule coffee is a kind of capsule drink. It is made by grinding coffee beans into coffee powder and then putting them into aluminum capsules. It eliminates the problems of ordinary coffee beans or coffee powder becoming sour and oxidized after contact with air.

[0003] When producing capsule coffee, coffee powder needs to be filled into a pre-treated cup body and then packaged. However, the devices currently used for filling and packaging capsule coffee on the market are not only complex in structure, but also have relatively low filling efficiency.

[0004] In view of this, it is necessary to propose an improvement to the capsule coffee filling device in the prior art to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to disclose a filling device to solve the problems of complex structure and low filling efficiency of the capsule coffee filling device in the prior art.

[0006] A further purpose of the present invention is to solve the problem of cup hanging caused by the difficulty in reliably separating the cup body and the filling head.

[0007] To achieve the above object, the present invention provides a filling device, comprising:

[0008] A buffer bucket, wherein a horizontal conveying mechanism is connected below the buffer bucket and a first material level sensor is provided on the buffer bucket;

[0009] A filling frame, wherein a metering cone is installed on the filling frame, and the horizontal conveying mechanism is connected to the metering cone;

[0010] A filling head is arranged at the lower end of the metering cone hopper, and the filling head includes a filling tube and a screw arranged in the filling tube;

[0011] A drive assembly for driving the screw to rotate, and the drive assembly is arranged in a power box, wherein a second material level sensor for detecting the height of the material in the metering cone bucket is arranged in the power box; and

[0012] An anti-cup assembly is arranged outside the filling tube and is used to separate the cup body from the filling tube.

[0013] As a further improvement of the present invention, the anti-cup cup assembly includes:

[0014] A fixed sleeve fixed to the outside of the straight tube of the filling tube;

[0015] a movable sleeve that is movably sleeved on the outside of the fixed sleeve, the movable sleeve being provided with a sleeve hole, the sleeve hole comprising a first hole at an upper portion, and a second hole located below the first hole and communicating with the first hole, the aperture size of the second hole matching the outer diameter of the fixed sleeve, and the aperture size of the first hole being larger than the outer diameter of the fixed sleeve;

[0016] Among them, the outer edge of the cup body when docked with the filling tube abuts against the lower end of the movable sleeve, and a sealing protrusion is provided on the outer wall of the fixed sleeve. The sealing protrusion is attached to the hole wall of the first hole, and a cavity is formed between the movable sleeve and the fixed sleeve below the sealing protrusion, and an air hole connected to the cavity is opened on the movable sleeve.

[0017] As a further improvement of the present invention, the fixed sleeve is provided with a limiting fixing ring located above the movable sleeve.

[0018] As a further improvement of the present invention, the limiting fixing ring is formed with an annular extension portion extending longitudinally downward to extend into the first hole, and the annular extension portion is respectively in contact with the hole wall of the first hole and the outer wall of the fixing sleeve.

[0019] As a further improvement of the present invention, the position limiting fixing ring is further formed with an annular protrusion extending longitudinally upward and abutting against the outer wall of the fixing sleeve.

[0020] As a further improvement of the present invention, there are multiple sealing protrusions, a sealing member is arranged in the cavity formed between adjacent sealing protrusions and the hole wall of the first hole, and the cavity is formed between the lowest sealing protrusion, the movable sleeve and the fixed sleeve.

[0021] As a further improvement of the present invention, the outer wall diameter of the fixed sleeve is smaller than the flaring size of the flared portion of the cup body, and the outer wall diameter of the movable sleeve is not smaller than the outer edge diameter of the cup body.

[0022] As a further improvement of the present invention, it also includes:

[0023] The stirring assembly is composed of a stirring motor installed in the power box, a stirring shaft, and a stirring blade located in the metering cone and installed on the stirring shaft. The stirring shaft is connected to the output shaft of the stirring motor through a gear assembly.

[0024] As a further improvement of the present invention, the filling heads are configured with two or more, and the two or more filling heads are arranged side by side in the horizontal direction at the lower end of the metering cone hopper;

[0025] The number of the drive assemblies matches the number of the filling heads.

[0026] As a further improvement of the present invention, the drive assembly includes a filling servo motor, a filling reducer and a transmission rod arranged in the metering cone bucket, the output end of the filling servo motor is transmission-connected to the input end of the filling reducer, the output end of the filling reducer is transmission-connected to the upper end of the transmission rod, and the lower end of the transmission rod is connected to the upper end of the screw.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The filling device of the present invention uses a horizontal conveying mechanism to stably and efficiently transfer material from the buffer hopper to the metering cone. A drive assembly within the power box drives the screw in the filling head to rapidly rotate, effectively filling the material into the cup below the filling head. As can be seen, the filling device of the present invention not only has a simple structure but also achieves a high filling speed, thus resolving the problems of the complex structure and low filling efficiency of prior art capsule coffee filling devices.

[0029] Furthermore, in the present invention, the anti-cup hanging assembly inputs air pressure into the cavity through the air hole, and then drives the cup holder to rise through the lifting cylinder of the cup holder assembly at the powder filling station, so that the cup body in the cup holder docks with the filling tube. During the process of the cup body continuing to rise, since the outer edge of the cup body is against the lower end of the movable sleeve, the upward movement of the cup body will drive the movable sleeve to move upward. After the filling is completed, the lifting cylinder of the cup holder assembly located at the powder filling station descends. Since the gas inside the cavity is pressurized, the movable sleeve extends downward under the action of air pressure, driving the cup body to move downward, so that the cup body and the filling tube are reliably separated to avoid the cup hanging phenomenon. Thus, the problem of the cup hanging phenomenon in the prior art that the cup body and the filling head are difficult to be reliably separated is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic structural diagram of a filling device according to an embodiment of the present invention;

[0031] Figure 2 This is a schematic exploded view of a powder filling mechanism according to an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the connection structure between the filling head and the anti-cup assembly;

[0033] Figure 4 for Figure 3 Schematic enlarged structure diagram at A in the middle. DETAILED DESCRIPTION

[0034] The present invention is described in detail below with reference to the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in this field based on these embodiments are all within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", "positive direction", "negative direction" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0036] Please refer to Figures 1 to 4 A specific embodiment of a filling device of the present invention is shown.

[0037] like Figure 1 As shown, this embodiment provides a filling device, which includes a vacuum loader 301, a buffer hopper 302, a horizontal conveying mechanism 303, and a powder filling mechanism 304, which are sequentially connected. The horizontal conveying mechanism 303 is a screw conveyor, which can be configured below the buffer hopper 302. The buffer hopper 302 is provided with a first material level sensor 305.

[0038] like Figure 2 As shown, the powder filling mechanism 304 includes a filling frame 3041, a metering cone 306, a power box 3042, and a filling head 3043. The metering cone 306 is mounted on the filling frame 3041, and the horizontal conveying mechanism 303 is connected to the metering cone 306. The filling head 3043 is arranged at the lower end of the metering cone 306 and includes a filling tube 307 and a screw 315 disposed within the filling tube 307. The power box 3042 is mounted above the metering cone 306. The power box 3042 contains a drive assembly for rotating the screw 315. The powder filling mechanism 304 is also equipped with a second material level sensor 314, which can be located within the power box 3042. This sensor is used to detect the material level within the metering cone 306, allowing for real-time material replenishment and ensuring a relatively stable powder level within the metering cone 306. This ensures filling accuracy and improves the filling effect. The powder filling mechanism 304 also includes an anti-cup assembly 316, which is located outside the filling tube 307 and is used to separate the cup body from the filling tube 307.

[0039] There are two or more filling heads 3043, and the two or more filling heads 3043 are arranged side by side in the horizontal direction at the lower end of the metering cone 306; the number of drive components matches the number of filling heads 3043. Figure 2 or Figure 3 In the embodiment, two filling heads 3043 are configured, and two corresponding drive assemblies are also configured, and the two drive assemblies are respectively connected to the two filling heads 3043. It should be noted that the number of filling heads 3043 can be set based on actual working conditions, such as one, three, four, or five filling heads 3043, and is not limited to the scope defined in this embodiment.

[0040] To improve the installation stability of the horizontal conveying mechanism 303, the filling frame 3041 is equipped with a mounting plate 3044, which is equipped with a support frame 3045. The horizontal conveying mechanism 303 is placed horizontally on the support frame 3045, and the discharge end of the horizontal conveying mechanism 303 is connected to the feed end 3061 of the metering cone 306 located on the mounting plate 3044. Furthermore, a conical mounting portion 3046 is arranged at the end of the support frame 3045. A fixing ring 3047 is formed on the mounting surface of the conical mounting portion 3046 for securing the horizontal conveying mechanism 303. This fixing ring 3047 quickly secures the horizontal conveying mechanism 303 and further improves the stability of the horizontal conveying mechanism 303 during operation. The mounting plate 3044 is arranged on the opening 3062 of the metering cone 306 and is detachably connected to the metering cone 306.

[0041] The drive assembly includes a filling servo motor 309, a filling reducer 310, and a transmission rod 308 positioned within the metering cone 306. The output of the filling servo motor 309 is in driving connection with the input of the filling reducer 310, which in turn is in driving connection with the upper end of the transmission rod 308. The upper end of the screw 315 extends into the metering cone 306, and the upper end of the screw 315 is fixedly connected to the lower end of the transmission rod 308. Thus, the filling servo motor 309 drives the filling reducer 310, which in turn drives the transmission rod 308. This, in turn, drives the screw 315 to rotate at high speed, rapidly completing the filling process.

[0042] The powder filling mechanism 304 also includes a stirring assembly, which includes a stirring motor 311, a stirring shaft 312, and a stirring blade 313. The stirring motor 311 is installed in the power box 3042. The stirring shaft 312 is connected to the output shaft of the stirring motor 311 through a gear assembly. The stirring blade 313 is installed on the stirring shaft 312 and is located in the metering cone 306. As can be seen, when the driving assembly drives the screw 315 to rotate, the stirring motor 311 drives the stirring shaft 312 to rotate, thereby driving the stirring blade 313 to rotate in the metering cone 306. This can prevent the material from sticking to the inner wall of the metering cone 306 during the filling process, and effectively ensure the stability and reliability of the material filling.

[0043] It should be understood that the filling device of this embodiment uses the horizontal conveying mechanism 303 to stably and efficiently transfer the material in the buffer hopper 302 to the metering cone hopper 306. The drive assembly in the power box 3042 drives the screw 315 in the filling head 3043 to rotate rapidly. Under the action of the rapid rotation of the screw 315, the material is effectively filled into the cup body below the filling head 3043. Thus, the filling device of this embodiment is not only simple in structure, but also has a fast filling speed and high filling quality, thus solving the problems of the complex structure and low filling efficiency of the capsule coffee filling device in the prior art.

[0044] The filling tube 307 comprises an upper tapered tube 3071 and a lower straight tube 3072. The inner diameter of the tapered tube 3071 decreases from top to bottom. The upper end of the tapered tube 3071 is connected to the discharge port of the metering cone 306, while the lower end of the tapered tube 3071 is connected to the upper end of the straight tube 3072. With this arrangement, when the cup is filled, the material entering the filling tube 307 passes through the tapered tube 3071 and the straight tube 3072 in sequence, increasing the density of the material entering the cup and thereby improving the compactness of the filled material.

[0045] It should be noted that the “material” involved in this embodiment can be powder or solid particles, such as coffee powder, milk powder, flour and other powdery objects, which are not given as examples here.

[0046] In the above embodiment, an anti-spin cup assembly 316 is installed at the lower portion of the filling tube 307. The anti-spin cup assembly 316 comprises: a fixed sleeve 317 fixed to the outer portion of the straight tube of the filling tube 307; and a movable sleeve 318 that is movably sleeved and connected to the outer portion of the fixed sleeve 317. The movable sleeve 318 is provided with a sleeve hole, which includes a first hole 3181 at the top and a second hole 3182 located below and connected to the first hole 3181. The diameter of the second hole 3182 matches the outer diameter of the fixed sleeve 317, so that the wall of the second hole 3182 is aligned with the outer wall of the fixed sleeve 317. Furthermore, the diameter of the first hole 3181 is larger than the outer diameter of the fixed sleeve 317. The wall of the second hole 3182 is aligned and connected to the outer wall of the fixed sleeve 317 via at least one sealing ring 3183. When docked with the filling tube 307, the outer edge 1032 of the cup body 1031 abuts the lower end of the movable sleeve 318. A sealing protrusion 321 is provided on the outer wall of the fixed sleeve 317, which fits against the wall of the first hole 3181. A cavity 322 is formed between the movable sleeve 318 and the fixed sleeve 317, below the sealing protrusion 321. The movable sleeve 318 has an air hole 3191 in communication with the cavity 322. An air hole 3191 is provided with an inflation connector 319. There is only one air hole 3191.

[0047] There are multiple sealing protrusions 321, and a sealing member 3211 is arranged in the cavity formed between adjacent sealing protrusions 321 and the hole wall of the first hole 3181. A cavity 322 is formed between the lowest sealing protrusion 321, the movable sleeve 318 and the fixed sleeve 317.

[0048] It is worth noting that the outer wall diameter of the fixed sleeve 317 is smaller than the flared size of the cup body flared portion, and the outer wall diameter of the movable sleeve 318 is not smaller than the outer edge diameter of the cup body 1031 .

[0049] It is understood that air pressure can be input into the cavity 322 through the air hole 3191 (for example, by connecting 0.1 MPa of air pressure at the air connector 319), and then the lifting cylinder of the cup assembly at the powder filling station drives the cup 103 upward, so that the cup body in the cup holder 103 docks with the filling tube 307. As the cup body continues to rise, the outer edge 1032 of the cup body abuts against the lower end of the movable sleeve 318, and the upward movement of the cup body drives the movable sleeve 318 upward. After filling is completed, the lifting cylinder of the cup assembly at the powder filling station descends. Due to the pressure of the gas inside the cavity 322, the movable sleeve 318 extends downward under the action of the air pressure, driving the cup body 1031 downward, so that the cup body 1031 is reliably separated from the filling tube 307, thereby preventing the cup from hanging. This solves the problem of the cup hanging phenomenon in the prior art that the cup body and the filling head are difficult to reliably separate.

[0050] It should be noted that the lifting cylinder of the cup assembly at the powder filling station involved in this embodiment is a conventional setting in the field, and the specific setting structure will not be described in detail.

[0051] Furthermore, the fixed sleeve 317 is sleeved with a limiting fixed ring 320 positioned above the movable sleeve 318. The limiting fixed ring 320 has an annular extension 3201 extending longitudinally downward to extend into the first hole 3181. The annular extension 3201 is respectively in contact with the wall of the first hole 3181 and the outer wall of the fixed sleeve 317. The limiting fixed ring 320 also has an annular protrusion 3202 extending longitudinally upward and in contact with the outer wall of the fixed sleeve 317. With this arrangement, after the cup body 1031 is docked with the filling tube 307, as the cup body continues to rise, the outer edge 1032 of the cup body drives the movable sleeve 318 upward until the movable sleeve 318 hits the limiting fixed ring 320, thereby limiting the upward movement of the movable sleeve 318.

[0052] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

[0053] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A filling device, characterized in that: include: A buffer bucket, wherein a horizontal conveying mechanism is connected below the buffer bucket and a first material level sensor is provided on the buffer bucket; A filling frame, wherein a metering cone is installed on the filling frame, and the horizontal conveying mechanism is connected to the metering cone; A filling head is arranged at the lower end of the metering cone hopper, and the filling head includes a filling tube and a screw arranged in the filling tube; A drive assembly for driving the screw to rotate, and the drive assembly is arranged in a power box, wherein a second material level sensor for detecting the height of the material in the metering cone bucket is arranged in the power box; and an anti-cup assembly arranged outside the filling tube and used to separate the cup body from the filling tube; The anti-hanging cup assembly includes: A fixed sleeve fixed to the outside of the straight tube of the filling tube; a movable sleeve that is movably sleeved on the outside of the fixed sleeve, the movable sleeve being provided with a sleeve hole, the sleeve hole comprising a first hole at an upper portion, and a second hole located below the first hole and communicating with the first hole, the aperture size of the second hole matching the outer diameter of the fixed sleeve, and the aperture size of the first hole being larger than the outer diameter of the fixed sleeve; The outer edge of the cup body abuts against the lower end of the movable sleeve when docked with the filling tube, a sealing protrusion is provided on the outer wall of the fixed sleeve, and the sealing protrusion is attached to the hole wall of the first hole. A cavity is formed between the movable sleeve and the fixed sleeve below the sealing protrusion, and an air hole communicating with the cavity is opened on the movable sleeve. There are multiple sealing protrusions, and a sealing member is disposed in a cavity formed between adjacent sealing protrusions and the hole wall of the first hole, and the cavity is formed between the lowest sealing protrusion, the movable sleeve, and the fixed sleeve; The outer wall diameter of the fixed sleeve is smaller than the flared size of the flared portion of the cup body, and the outer wall diameter of the movable sleeve is not smaller than the outer edge diameter of the cup body.

2. The filling device according to claim 1, characterized in that The fixed sleeve is provided with a limiting fixing ring located above the movable sleeve.

3. The filling device according to claim 2, characterized in that: The position limiting fixing ring is formed with an annular extension portion extending longitudinally downward to extend into the first hole, and the annular extension portion is respectively in contact with the hole wall of the first hole and the outer wall of the fixing sleeve.

4. The filling device according to claim 2, characterized in that: The position limiting fixing ring is further formed with an annular protrusion that extends longitudinally upward and fits against the outer wall of the fixing sleeve.

5. The filling device according to any one of claims 1 to 4, characterized in that: It also includes: a stirring assembly, which consists of a stirring motor installed in the power box, a stirring shaft, and a stirring blade located in the metering cone and installed on the stirring shaft. The stirring shaft is connected to the output shaft of the stirring motor through a gear assembly.

6. The filling device according to claim 5, characterized in that: There are two or more filling heads, and the two or more filling heads are arranged side by side in the horizontal direction at the lower end of the metering cone; The number of the drive assemblies matches the number of the filling heads.

7. The filling device according to claim 5, characterized in that The driving assembly includes a filling servo motor, a filling reducer and a transmission rod arranged in the metering cone bucket. The output end of the filling servo motor is transmission-connected to the input end of the filling reducer, the output end of the filling reducer is transmission-connected to the upper end of the transmission rod, and the lower end of the transmission rod is connected to the upper end of the screw.

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