Single-drive automatic powder pressing and distributing module for coffee machine

Abstract

The single-drive automatic powder pressing and distributing module comprises a container, an extraction channel is arranged in the container, the lower end of the extraction channel is provided with an opening, and an extraction head capable of moving relative to the extraction channel is arranged in the extraction channel; a connecting hole is formed in the extraction head, a lifting rotating module is arranged above the extraction channel, the lifting rotating module comprises a rotationally arranged nut and a driving module for driving the nut to rotate, the nut is in threaded connection with a screw rod, the lower end of the screw rod is arranged in the connecting hole in a penetrating manner, and a first matching part and a second matching part are arranged on the screw rod at an interval; the extraction head is arranged between the first matching part and the second matching part; a powder distribution element is arranged below the extraction head and is fixedly connected with the screw rod; the first matching part and the second matching part are matched to apply a first acting force to the extraction head, and the first acting force is used for restraining the screw rod to rotate relative to the extraction head, so that the screw rod and the extraction head are connected into a whole to realize synchronous lifting motion.

Description

Technical Field

[0001] The utility model relates to a single-drive automatic powder pressing and distributing module for a coffee machine. Background Art

[0002] The existing automatic powder pressing and brewing structure drives the extraction head through a motor, so that the extraction head moves up and down with the motor, thereby realizing the powder pressing function. For example, the Chinese invention patent application document, with the publication number CN115153304A, discloses an automatic powder pressing component, a brewing system and a coffee bean grinding machine. The automatic powder pressing component includes: a power mechanism, including a power component and a power bracket, the power bracket is movably arranged on the main bracket of the brewing system; an extrusion component, which is connected to the power component and can rotate under the drive of the power component; an extrusion brewing head, which is detachably connected to the extrusion component, and the extrusion component is used to drive the extrusion brewing head to move along the rotation axis of the extrusion component; an elastic component, which is arranged on the power bracket, and is used to apply a downward elastic force to the power bracket, so that the power bracket can move up and down relative to the main bracket. The automatic powder pressing component of the embodiment of the utility model can drive the extrusion brewing head to rise and fall to realize powder pressing.

[0003] Based on the above, in the prior art, the powder in the coffee funnel is compacted by the brewing head during its downward movement. The problem is that the prior art can only achieve powder compaction, but not powder distribution. The powder distribution step is to solve the problem of uneven powder surface. Since the powder is input into the coffee funnel from one side during the powder feeding process of the coffee machine, if the powder is only compacted but not distributed, the powder surface of the coffee funnel will appear higher on one side near the powder feeding channel than on the other side. The uneven powder will affect the extraction effect, which needs further improvement. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a single-drive automatic powder pressing and distributing module for a coffee machine.

[0005] A single-drive automatic powder pressing and distributing module for a coffee machine designed for this purpose comprises a container, an extraction channel is arranged in the container, the lower end of the extraction channel is opened, and an extraction head is arranged in the extraction channel and can move relative to the extraction channel;

[0006] The extraction head is provided with a connection hole, a lifting and rotating module is provided above the extraction channel, the lifting and rotating module comprises a nut which is rotatably provided and a driving module for driving the nut to rotate, the nut is threadedly connected with a screw rod, the lower end of the screw rod is inserted into the connection hole, a first matching portion and a second matching portion are arranged on the screw rod at intervals, and the extraction head is arranged between the first matching portion and the second matching portion;

[0007] A powder distribution element is provided below the extraction head, and the powder distribution element is fixedly connected to the screw rod;

[0008] The first matching portion cooperates with the second matching portion to apply a first force to the extraction head, and the first force is used to constrain the screw rod to rotate relative to the extraction head, so that the screw rod and the extraction head are connected as a whole to achieve synchronous lifting and lowering motion;

[0009] The screw rod is provided with an action portion, and the nut is provided with an elastic element for applying a second action force to the action portion, wherein the second action force is used to constrain the screw rod from moving relative to the nut;

[0010] The first force is greater than the second force.

[0011] Compared with the prior art, the present invention is characterized in that the extraction head and the screw are connected as one under the constraint of the first force; so that under the action of the driving module, the nut rotates to drive the screw and the extraction head to move downward relative to the extraction channel. When the screw moves downward to the position where the action part and the elastic element overlap, the elastic element applies a second action force to the screw. At this time, the screw is affected by the first action force and the second action force. When driven by the nut, the screw will rotate and move downward at the same time. In this process, the screw drives the powder distribution element to rotate to perform the powder distribution process on the powder surface. After a short rotation, under the action of the first action force, the screw moves downward to squeeze the elastic element out of the action part to follow the extraction head to continue to move downward to perform the powder pressing process, until the extraction head moves to the preset position, and the nut reverses to drive the screw and the extraction head to reset upward. In this structure, the present invention realizes that a single driving module can realize the dual processes of moving powder pressing and rotating powder distribution. The overall structure is not only small in size and low in manufacturing cost, but also the powder distribution can improve the quality of coffee brewing. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is one of the cross-sectional structural schematic diagrams of the utility model;

[0013] Figure 2 It is a schematic diagram of the structure of the container, the extraction head and the screw rod;

[0014] Figure 3 This is the second schematic diagram of the cross-sectional structure of the utility model;

[0015] Figure 4 For this utility model Figure 3 The enlarged structural diagram at A in the middle;

[0016] Figure 5 This is one of the schematic diagrams of the decomposed structure of the utility model;

[0017] Figure 6This is the second schematic diagram of the decomposition structure of the utility model;

[0018] Figure 7 This is the third schematic diagram of the decomposition structure of the present utility model. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] See also Figure 1-Figure 7 A single-drive automatic powder pressing and distributing module is applied to the automatic powder loading, pressing and distributing structure of a coffee machine. The structure comprises a container 10, wherein an extraction channel 110 and a powder feeding channel 120 are arranged in the container 10. The extraction channel 110 is opened at the lower end. A powder feeding component 50 is arranged in the powder feeding channel 120 and can move to the extraction channel 110 and make the powder fall into the coffee funnel 60. An extraction head 20 is arranged in the extraction channel 110 and can move relative to the extraction channel 110.

[0021] The extraction head 20 is provided with a connection hole 200, and a lifting and rotating module 40 is provided above the extraction channel 110. The lifting and rotating module 40 includes a nut 420 that is rotatably arranged and a driving module 80 for driving the nut 420 to rotate. The nut 420 is threadedly connected with a screw rod 440, and the lower end of the screw rod 440 is inserted into the connection hole 200. A first matching portion 700 and a second matching portion 70 are arranged on the screw rod 440 at intervals, and the extraction head 20 is arranged between the first matching portion 700 and the second matching portion 70;

[0022] A powder distribution element 710 is disposed below the extraction head 20, and the powder distribution element 710 is fixedly connected to the screw rod 440;

[0023] The first matching portion 700 cooperates with the second matching portion 70 to apply a first force to the extraction head 20, so that the screw rod 440 and the extraction head 20 are connected as a whole to achieve synchronous lifting and lowering motion;

[0024] The screw rod 440 is provided with an acting portion 441, and the nut 420 is provided with an elastic element 400 for applying a second acting force to the acting portion 441, so that the screw rod 440 can rotate relative to the extraction head 20;

[0025] The first force is greater than the second force.

[0026] In the above embodiment, the first force is generated by the clamping force of the first matching portion 700 and the second matching portion 70 on the extraction head 20 .

[0027] Based on the above embodiment, under the constraint of the first force, the extraction head and the screw are connected as one; so that under the action of the driving module, the nut rotates to drive the screw and the extraction head to move downward relative to the extraction channel. When the screw moves down to the position where the action part and the elastic element overlap, the elastic element applies a second action force to the screw. At this time, the screw is affected by the first action force and the second action force. When driven by the nut, the screw will rotate and move downward at the same time. In this process, the screw drives the powder distribution element to rotate to perform the powder distribution process on the powder surface. After a short rotation, under the action of the first force, the screw moves downward to squeeze the elastic element out of the action part to follow the extraction head to continue to move downward to perform the powder pressing process, until the extraction head moves to the preset position, and the nut reverses to drive the screw and the extraction head to reset upward. In this structure, the utility model realizes that a single driving module can realize the dual processes of moving powder pressing and rotating powder distribution. The overall structure is not only small in size and low in manufacturing cost, but also the powder distribution can improve the quality of coffee brewing.

[0028] See also Figure 3 and Figure 4 A connecting shaft 442 is provided at the lower end of the screw rod 440 . The connecting shaft 442 is inserted into the connecting hole 200 . The powder distributing element 710 is fixedly connected to the lower end of the connecting shaft 442 .

[0029] Furthermore, the screw rod 440 and the connecting shaft 442 are an integrated structure.

[0030] See also Figure 2 and Figure 3 The action portion 441 is a recessed portion 444 disposed on the screw rod 440 . When the recessed portion 444 overlaps with the elastic element 400 , the elastic element 400 can be inserted into the recessed portion 444 .

[0031] Furthermore, the recessed portion 444 is a groove provided on the screw rod 440 , and is preferably an annular groove or a strip groove.

[0032] See also Figure 3 The nut 420 is provided with a pin hole 421, one end of the pin hole 421 can be communicated with the recessed portion 444, the elastic element 400 includes a pin 450 and a spring 460, the pin 450 is movably arranged in the pin hole 421, and the spring 460 applies a force to the pin 450 to move toward one side of the screw rod 440.

[0033] For further information, see Figure 3 , two elastic elements 400 and two acting parts 441 are provided and are respectively provided on the left and right sides.

[0034] See also Figure 3The second matching portion 70 is the upper end surface of the powder distributing element 710 , and the upper end surface of the powder distributing element 710 is in contact with the lower end surface of the extraction head 20 .

[0035] See also Figure 3 and Figure 4 A matching piece 730 is provided below the extraction head 20 , and the matching piece 730 is fixedly connected to the screw rod 440 . The second matching portion 70 is the upper end surface of the matching piece 730 , and the upper end surface of the matching piece 730 is in contact with the lower end surface of the extraction head 20 .

[0036] See also Figure 3 The first matching portion 700 is the lower end surface of the screw rod 440 , and the lower end surface of the screw rod 440 is in contact with the upper end surface of the extraction head 20 .

[0037] In the utility model, the extraction head 20 is clamped and fixed by the lower end surface of the screw rod 440 and the powder distribution element 710 or the matching piece 730. When there is no influence of the second force, the first force connects the screw rod and the extraction head as a whole. Under the guidance of the extraction head and the container, the rotation of the nut can drive the screw rod and the extraction head to move downward or upward.

[0038] See also Figure 2 A guide groove 130 is provided in the extraction channel 110, and a guide block 210 is provided on the extraction head 20. The guide block 210 is movably provided in the guide groove 130. Under the guidance of this structure, the extraction head 20 can be constrained to move back and forth along the extraction channel 110, and cannot rotate relative to the extraction channel 110.

[0039] See also Figure 6 A fixing frame 410 is arranged above the extraction channel 110, the nut 420 is rotatably arranged on the fixing frame 410, the nut 420 is fixedly connected with a driven element 430, the driving module 80 includes a first motor 810 fixedly mounted on the fixing frame 410, the motor shaft of the first motor 810 is connected with a driving element 820, and the driving element 820 is transmission-connected with the driven element 430.

[0040] Further, the driven element 430 is a worm gear, and the driving element 820 is a worm.

[0041] Furthermore, a spring installation cavity 431 is provided on the driven element 430 . The spring installation cavity 431 is communicated with the pin hole 421 , and the spring 460 is disposed in the spring installation cavity 431 .

[0042] See also Figure 4 and Figure 5The powder distributing element 710 is provided with a flange hole 711, the upper end surface of the matching piece 730 is provided with a transmission groove 731, the lower end of the connecting shaft 442 is inserted into the transmission groove 731, and the bolt 720 passes through the flange hole 711, the matching piece 730 and is threadedly connected with the connecting shaft 442.

[0043] The matching piece 730 is provided with a fitting portion 731 extending downward, and the lower end surface of the fitting portion 731 fits with the upper end surface of the powder distributing element 710;

[0044] See also Figure 4 and Figure 5 The mating piece 730 is provided with a countersunk hole 732 , and the flange of the flange hole 711 is embedded in the countersunk hole 732 .

[0045] During assembly, the bolt 720 passes through the flange hole 711 and the countersunk hole 732 to connect with the connecting shaft 442. When the bolt 720 is locked, the head of the bolt 720 presses the flange of the flange hole 711 into the countersunk hole 732 so that the flange and the mating piece 730 fit tightly together. At the same time, under the action of the fitting portion 731, the powder distribution element 710 and the mating piece 730 can be further tightly connected together.

[0046] See also Figure 7 The powder feeding component 50 includes a powder feeding container 500 that is movably arranged in the powder feeding channel 120. The powder feeding container 500 reciprocates between a first position and a second position along the powder feeding channel 120. The powder feeding container 500 is opened at both upper and lower ends. A powder inlet channel 560 is arranged on the powder feeding channel 120 at the first position. When the powder feeding container 500 is at the first position, the powder inlet channel 560 is communicated with the powder feeding container 500. When the powder feeding container 500 is at the second position, the powder feeding container 500 is communicated with the extraction channel 110.

[0047] During the coffee extraction process, the powder delivery container 500 is located at the first position of the powder delivery channel 120. At the same time, both upper and lower end surfaces of the powder delivery container 500 are in contact with the inner wall of the powder delivery channel 120, so that when in the first position, the inside of the powder delivery container 500 and the inside of the powder inlet channel 560 are not connected to the extraction channel 110, so that water vapor can be prevented from affecting the powder in the powder delivery container 500 or the powder inlet channel 560.

[0048] Furthermore, a baffle plate 510 is also provided on the powder delivery container 500. When the powder delivery container 500 moves from the first position to the second position, the baffle plate 510 seals the powder inlet channel 560 to prevent external powder from entering the powder delivery channel 120 from the powder inlet channel 560 after the powder delivery container leaves.

[0049] See also Figure 2 The powder feeding channel 120 above the first position is provided with a powder inlet 561 , and the powder inlet channel 560 is communicated with the powder inlet 561 .

[0050] See also Figure 7 The powder delivery channel 120 is provided with sensors 550 for sensing the powder delivery container 500 at both the first position and the second position. The sensor 550 may be an existing photoelectric switch.

[0051] See also Figure 7 The powder delivery channel 120 is provided with a second motor 530 for driving the powder delivery container 500 to reciprocate between a first position and a second position along the powder delivery channel 120. The second motor 530 is connected to the powder delivery container 500 by a connecting rod structure or a gear rack transmission structure.

[0052] Furthermore, the powder delivery channel 120 is an arc-shaped channel, the powder delivery container 500 is connected to a swing rod 520, and the output power shaft 540 of the second motor 530 is connected to the swing rod 520 to drive the swing rod 520 to swing and drive the powder delivery container 500 to move along the powder delivery channel 120.

[0053] See also Figure 7 The container 10 includes a lower shell 101 and an upper shell 102 which are assembled with each other.

[0054] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0055] 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" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0056] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and the description are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A single-drive automatic powder pressing and distributing module for a coffee machine, comprising a container (10), wherein an extraction channel (110) is arranged in the container (10), wherein the lower end of the extraction channel (110) is open, Features: An extraction head (20) is arranged in the extraction channel (110) and is movable relative to the extraction channel (110); The extraction head (20) is provided with a connection hole (200), a lifting and rotating module (40) is provided above the extraction channel (110), the lifting and rotating module (40) comprises a nut (420) which is rotatably arranged and a driving module (80) for driving the nut (420) to rotate, the nut (420) is threadedly connected with a screw rod (440), the lower end of the screw rod (440) is inserted into the connection hole (200), a first matching portion (700) and a second matching portion (70) are arranged on the screw rod (440) at intervals, and the extraction head (20) is arranged between the first matching portion (700) and the second matching portion (70); A powder distribution element (710) is provided below the extraction head (20), and the powder distribution element (710) is fixedly connected to the screw rod (440); The first matching portion (700) cooperates with the second matching portion (70) to apply a first force to the extraction head (20), wherein the first force is used to constrain the screw rod (440) to rotate relative to the extraction head (20), so that the screw rod (440) and the extraction head (20) are connected as a whole to achieve synchronous lifting and lowering movement; The screw rod (440) is provided with an action portion (441), and the nut (420) is provided with an elastic element (400) for applying a second action force to the action portion (441), wherein the second action force is used to constrain the screw rod (440) to move relative to the nut (420); The first force is greater than the second force.

2. A single-drive automatic powder pressing and distributing module for a coffee machine according to claim 1, Features: A connecting shaft (442) is provided at the lower end of the screw rod (440), the connecting shaft (442) is inserted into the connecting hole (200), and the powder distributing element (710) is fixedly connected to the lower end of the connecting shaft (442).

3. A single-drive automatic powder pressing and distributing module for a coffee machine according to claim 1, Features: The action portion (441) is a recessed portion (444) disposed on the screw rod (440); when the recessed portion (444) overlaps with the elastic element (400), the elastic element (400) can be inserted into the recessed portion (444).

4. A single-drive automatic powder pressing and distributing module for a coffee machine according to claim 1, Features: The second matching portion (70) is the upper end surface of the powder distribution element (710), and the upper end surface of the powder distribution element (710) is in contact with the lower end surface of the extraction head (20).

5. A single-drive automatic powder pressing and distributing module for a coffee machine according to claim 1, Features: A matching piece (730) is provided below the extraction head (20), and the matching piece (730) is fixedly connected to the screw rod (440). The second matching portion (70) is the upper end surface of the matching piece (730), and the upper end surface of the matching piece (730) is in contact with the lower end surface of the extraction head (20).

6. A single-drive automatic powder pressing and distributing module for a coffee machine according to claim 2, Features: The first matching portion (700) is the lower end surface of the screw rod (440), and the lower end surface of the screw rod (440) is in contact with the upper end surface of the extraction head (20).

7. A single-drive automatic powder pressing and distributing module for a coffee machine according to any one of claims 1 to 6, Features: A guide groove (130) is provided in the extraction channel (110), and a guide block (210) is provided on the extraction head (20), wherein the guide block (210) is movably disposed in the guide groove (130).

8. A single-drive automatic powder pressing and distributing module for a coffee machine according to claim 3, Features: The nut (420) is provided with a pin hole (421), one end of the pin hole (421) can be communicated with the recessed portion (444), the elastic element (400) comprises a pin (450) and a spring (460), the pin (450) is movably arranged in the pin hole (421), and the spring (460) applies a force to the pin (450) to move toward one side of the screw rod (440).

9. A single-drive automatic powder pressing and distributing module for a coffee machine according to any one of claims 1 to 6, Features: A fixing frame (410) is arranged above the extraction channel (110), the nut (420) is rotatably arranged on the fixing frame (410), the nut (420) is fixedly connected to a driven element (430), the driving module (80) comprises a first motor (810) fixedly mounted on the fixing frame (410), the motor shaft of the first motor (810) is connected to a driving element (820), and the driving element (820) is drivingly connected to the driven element (430).

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