Bean grinding and automatic powder pressing device of coffee machine

Abstract

The utility model discloses a coffee machine bean grinding automatic powder pressing device which comprises a powder pressing chamber, a hydraulic cylinder is arranged on the upper side of the powder pressing chamber through a vertical frame, a lifting plate is arranged on the lower side of the hydraulic cylinder, a powder pressing hammer is arranged on the lower side of the lifting plate in an elastic sliding mode through a spring, and two sliding blocks are arranged on the lower portion in the vertical frame in an opposite sliding mode through a transverse support and a lead screw. The upper side of the powder pressing chamber is provided with a lifting plate through a vertical frame and a hydraulic cylinder, the lower side of the lifting plate is elastically and slidably provided with a powder pressing hammer through a spring, a transverse connecting plate is arranged between the two sliding blocks, the upper side of the transverse connecting plate is provided with a dust scraping plate, and the dust scraping plate can conduct powder scraping treatment on the lower end of the powder pressing hammer when the dust scraping plate moves transversely through a lead screw. The powder pressing hammer is elastically arranged outside the lower end of the lifting plate in a sliding mode, so that when the hydraulic cylinder drives the powder pressing hammer and the lifting plate to move downwards, the powder pressing hammer can be elastically pressed in the powder pressing chamber, elastic powder pressing operation treatment is achieved, and powder pressing uniformity and compactness are improved.

Description

Technical Field

[0001] This utility model relates to the field of coffee machine tamping technology, specifically an automatic coffee bean tamping device for coffee machines. Background Technology

[0002] In the coffee brewing process, powdered coffee beans are usually tamped to improve the taste of the beverage. Generally speaking, to brew a cup of aromatic coffee, coffee beans are first ground into powder using a grinder, then the powder is poured into a portafilter, tamped down using a matching tamper, and finally brewed using a coffee machine, which facilitates better extraction of the coffee.

[0003] The prior art, patent application number 202223600484.2, describes an automatic coffee bean tamping device designed to address the technical problem of suboptimal hydraulic drive structure design in the tamping assembly of existing similar products. The device connects the powder pipe on one side of the cup holder of the grinding assembly to the powder inlet on one side of the funnel seat of the coffee funnel assembly. The key feature is that the tamping assembly is located at the top of the funnel seat of the coffee funnel assembly. The bottom of the tamping assembly's valve body has a tamping hammer, which is sealed to the valve body. One end of the valve body is fitted into a valve seat, and springs are installed at the four corners of the valve seat. A valve head is located at the liquid inlet on one side of the valve body. A piston sleeve, which moves up and down and is fitted and sealed within the valve body, is located in the inner cavity groove at the other end of the valve body. The top of the piston sleeve is sealed inside a piston cover by a piston ring. The water inlet of the valve head is connected to the water inlet of the water tank via a pipe. The piston sleeve moves the valve body and tamping hammer up and down with the hydraulic pressure changes within the cavity. However, it can only perform hard tamping, resulting in relatively poor uniformity and compaction of the tamped powder. Utility Model Content

[0004] The purpose of this invention is to provide an automatic tamping device for coffee beans in a coffee machine, which solves the problem that existing technologies can only perform hard tamping, resulting in relatively poor uniformity and compactness of the tamped beans.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic coffee bean tamping device, comprising a tamping chamber, a hydraulic cylinder mounted on the upper side of the tamping chamber via a vertical frame, a lifting plate mounted on the lower side of the hydraulic cylinder, a tamping hammer elastically sliding on the lower side of the lifting plate via a spring, two sliders sliding in opposite directions on the lower part of the vertical frame via a transverse support and a lead screw, and a transverse connecting plate between the two sliders, a scraper plate mounted on the upper side of the transverse connecting plate, and the scraper plate scraping powder from the lower end of the tamping hammer when the lead screw moves laterally.

[0006] Furthermore, the support frame is an inverted U-shaped support, and the support frame is fixedly welded to the outside of the powder pressing chamber.

[0007] Furthermore, a photoelectric switch is provided on the inner wall of the support frame, and the photoelectric switch is electrically connected to the controller of the PLC control cabinet on the outside of the support frame.

[0008] Furthermore, the upper side of the powder pressing hammer is provided with a first sliding groove, the inner wall of the first sliding groove is provided with a second sliding groove, and the two sides of the lifting plate are slidably arranged with the second sliding groove through limiting blocks. The upper side of the lifting plate is also provided with a guide rod that is slidably arranged with the upright frame.

[0009] Furthermore, the lead screw includes a lead screw rotatably disposed in a third slide groove on one side of the transverse support, and the lead screw has two opposite sets of external threads on its outer side. The two sliders are respectively threadedly connected to the two sets of external threads. A servo motor is drivenly connected to one end of the lead screw, and the servo motor is fixedly disposed on the outer side of one end of the transverse support.

[0010] Furthermore, the scraper blade is parallel and perpendicular to the lower end face of the powder-pressing hammer, and two sets of scraper blades are arranged in parallel.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. In this utility model, a lifting plate is provided on the upper side of the powder pressing chamber via a stand and a hydraulic cylinder, and a powder pressing hammer is provided on the lower side of the lifting plate via a spring. The powder pressing hammer is elastically slidably disposed outside the lower end of the lifting plate, so that when the hydraulic cylinder drives the powder pressing hammer and the lifting plate to move downward, the powder pressing hammer can be elastically pressed into the inside of the powder pressing chamber, realizing elastic powder pressing operation, which is beneficial to improving the uniformity and compactness of the powder.

[0013] 2. In this utility model, two sliders are provided in opposite directions in the lower part of the frame through a transverse support and a lead screw, and a transverse connecting plate is provided between the two sliders. A scraper is provided on the upper side of the transverse connecting plate. The two scrapers are driven by the lead screw to move laterally under the tamping hammer, thereby scraping the powder from the lower end of the tamping hammer, preventing some coffee powder from sticking to the lower part of the tamping hammer, further improving the uniformity of tamping, and facilitating the cleaning of the lower part of the tamping hammer.

[0014] 3. This utility model has a first sliding groove on the upper side of the powder pressing hammer, a second sliding groove on the inner wall of the first sliding groove, and the lifting plate is slidably set with the second sliding groove on both sides by limiting blocks, so that the lifting plate can be slidably guided when moving and adjusting relative to the powder pressing hammer, which is beneficial to improving the stability of the powder pressing hammer's elastic powder pressing. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the transverse support structure of this utility model;

[0018] Figure 3 This is a longitudinal sectional view of the powder-pressing hammer structure of this utility model.

[0019] In the diagram: 1. Powder pressing chamber; 2. Third chute; 3. Hydraulic cylinder; 4. Lifting plate; 5. Powder pressing hammer; 6. First chute; 7. Horizontal support; 8. Lead screw; 9. Sliding block; 10. Horizontal connecting plate; 11. Scraper; 12. Servo motor; 13. Photoelectric switch; 14. Spring; 15. Limit block; 16. Second chute; 17. Guide rod; 18. Frame. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1 , Figure 2 , Figure 3 In this embodiment of the present invention, an automatic tamping device for coffee beans includes a tamping chamber 1. A hydraulic cylinder 3 is mounted on the upper side of the tamping chamber 1 via a support frame 18. The support frame 18 is an inverted U-shaped bracket and is fixedly welded to the outside of the tamping chamber 1 to provide stable support for the upper part of the tamping device. A lifting plate 4 is mounted on the lower side of the hydraulic cylinder 3. A guide rod 17 is also mounted on the upper side of the lifting plate 4 and is slidably disposed with respect to the support frame 18. A tamping hammer 5 is elastically slidably disposed on the lower side of the lifting plate 4 via a spring 14. The tamping hammer 5 is elastically slidably disposed on the lower end of the lifting plate 4, so that when the hydraulic cylinder 3 drives the tamping hammer 5 and the lifting plate 4 to move downward, the tamping hammer 5 can be elastically pressed into the inside of the tamping chamber 1 to achieve elastic tamping operation, which is beneficial to improving the uniformity and compactness of the tamped powder.

[0022] like Figure 1 and Figure 2As shown, to prevent coffee powder from sticking to the lower part of the tamping hammer 5, two sliders 9 are slidably mounted on the lower part of the frame 18 via a transverse support 7 and a lead screw. A transverse connecting plate 10 is provided between the two sliders 9. A scraper 11 is provided on the upper side of the transverse connecting plate 10. The scraper 11 is parallel and perpendicular to the lower end face of the tamping hammer 5, and two sets of scraper 11 are arranged in parallel. When the scraper 11 moves laterally using the lead screw, it can scrape the powder from the lower end of the tamping hammer 5. The lead screw includes a third groove 2 that is rotatably mounted on one side of the transverse support 7. The screw 8 is located inside the machine and has two sets of opposite external threads on its outer side. Two sliders 9 are respectively connected to the two sets of external threads. One end of the screw 8 is connected to a servo motor 12, which is fixedly mounted on the outer side of one end of the transverse support 7. This allows the screw to drive two scraper blades 11 to move laterally under the tamping hammer 5, thereby scraping the lower end of the tamping hammer 5 to prevent some coffee powder from sticking to the lower part of the tamping hammer 5, further improving the uniformity of tamping, and facilitating the cleaning of the lower part of the tamping hammer 5.

[0023] like Figure 1 and Figure 3 As shown, in order to achieve automatic powder scraping, a photoelectric switch 13 is also provided on the inner wall of the upright frame 18, and the photoelectric switch 13 is electrically connected to the controller of the PLC control cabinet on the outside of the upright frame 18. The photoelectric switch 13 can sense whether the powder pressing hammer 5 is in place when scraping ash. After it is in place, the photoelectric switch 13 transmits the signal to the controller, and the controller will control the lead screw to work and automatically scrape the powder at the lower end of the powder pressing hammer 5.

[0024] like Figure 3 As shown, in order to improve the stability of the elastic pressing of powder by the powder pressing hammer 5, a first sliding groove 6 is provided on the upper side of the powder pressing hammer 5, and a second sliding groove 16 is provided on the inner wall of the first sliding groove 6. The lifting plate 4 is slidably set with the second sliding groove 16 on both sides through the limiting block 15, so that the lifting plate 4 can be slidably guided when moving and adjusting relative to the powder pressing hammer 5, which is beneficial to improving the stability of the elastic pressing of powder by the powder pressing hammer 5.

[0025] The working principle and usage process of this utility model are as follows: During use, a lifting plate 4 is provided on the upper side of the powder pressing chamber 1 through a stand 18 and a hydraulic cylinder 3, and a powder pressing hammer 5 is elastically slidably provided on the lower side of the lifting plate 4 through a spring 14. The powder pressing hammer 5 is elastically slidably disposed outside the lower end of the lifting plate 4, so that when the hydraulic cylinder 3 drives the powder pressing hammer 5 and the lifting plate 4 to move down, the powder pressing hammer 5 can be elastically pressed into the inside of the powder pressing chamber 1, realizing elastic powder pressing operation, which is beneficial to improving the uniformity and compactness of the powder pressing.

[0026] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic coffee bean grinding and tamping device for a coffee machine, comprising a tamping chamber (1), characterized in that: The upper side of the powder pressing chamber (1) is provided with a hydraulic cylinder (3) via a stand (18). The lower side of the hydraulic cylinder (3) is provided with a lifting plate (4). The lower side of the lifting plate (4) is provided with a powder pressing hammer (5) via a spring (14). The lower part of the stand (18) is provided with two sliders (9) via a transverse support (7) and a lead screw. A transverse connecting plate (10) is provided between the two sliders (9). A scraper plate (11) is provided on the upper side of the transverse connecting plate (10). When the scraper plate (11) moves laterally using the lead screw, it can scrape the powder from the lower end of the powder pressing hammer (5).

2. The automatic coffee bean grinding and tamping device according to claim 1, characterized in that: The support frame (18) is an inverted U-shaped support, and the support frame (18) is fixedly welded to the outside of the powder pressing chamber (1).

3. The automatic coffee bean grinding and tamping device according to claim 2, characterized in that: The inner wall of the support frame (18) is provided with a photoelectric switch (13), and the photoelectric switch (13) is electrically connected to the controller of the PLC control cabinet on the outside of the support frame (18).

4. The automatic coffee bean grinding and tamping device according to claim 1, characterized in that: The powder pressing hammer (5) is provided with a first sliding groove (6) on its upper side, and a second sliding groove (16) is provided on the inner wall of the first sliding groove (6). The lifting plate (4) is slidably set with the second sliding groove (16) on both sides through limiting blocks (15).

5. The automatic coffee bean grinding and tamping device according to claim 1, characterized in that: The lead screw includes a lead screw (8) rotatably disposed in a third slide groove (2) on one side of the transverse support (7), and the lead screw (8) has two opposite sets of external threads on its outer side. The two sliders (9) are respectively threadedly connected to the two sets of external threads. One end of the lead screw (8) is connected to a servo motor (12), and the servo motor (12) is fixedly disposed on the outer side of one end of the transverse support (7).

6. The automatic coffee bean grinding and tamping device according to claim 1, characterized in that: The scraper blade (11) is parallel and perpendicular to the lower end face of the powder pressing hammer (5), and two sets of scraper blades (11) are arranged in parallel.

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