An automatic grinding device for coffee grinder blades

Abstract

This utility model discloses an automatic grinding device for a coffee grinder blade, relating to the field of blade grinding technology. The device includes a worktable with a rotating placement disc inside. A rotating mechanism for use with the placement disc is located inside the worktable. A central fixing mechanism is provided on the interior and lower surface of the placement disc. A protective cover is fixedly connected to the upper surface of the worktable, and a first cylinder is fixedly mounted on the upper surface of the protective cover. The output end of the first cylinder passes through the protective cover and is fixedly connected to a mounting bracket. A DC motor is fixedly mounted on one side of the mounting bracket, and the output end of the DC motor passes through one side of the mounting bracket and is fixedly connected to a grinding blade. This application uses a central positioning mechanism to ensure the blade is in a centered position when fixed, effectively improving the stability of the equipment operation. The rotating mechanism facilitates uniform and stable rotation of the blade during grinding, thereby improving the grinding efficiency of the grinding equipment.

Description

Technical Field

[0001] This utility model relates to the field of blade grinding technology, specifically to an automatic blade grinding device for a coffee grinder. Background Technology

[0002] In today's increasingly popular coffee culture, the coffee grinder, as a key piece of equipment in the coffee-making process, directly affects the grinding quality and flavor of the coffee powder. The grinder burrs, as a core component, are prone to wear and dulling due to frequent grinding of coffee beans over long-term use. This not only reduces grinding efficiency but also leads to uneven particle size, severely impacting the extraction and presentation of coffee flavor. Therefore, burr grinding and maintenance is a crucial aspect of ensuring the stable performance of the coffee grinder.

[0003] However, existing automatic grinding equipment with burr blades still has some problems in use:

[0004] First, the existing grinding equipment's cutter head fixing structure generally suffers from poor versatility. The simple fixing method it adopts makes it difficult to accurately adapt to different specifications of cutter heads and cannot ensure that the cutter head is centered when fixed. During the grinding process, this unstable fixing state can easily cause the cutter head to shift or vibrate, which not only affects the grinding accuracy but also reduces the stability of the equipment operation.

[0005] Secondly, existing grinding equipment lacks a structure for rotating the fixed blade disc. Since the grinder blade disc needs to grind multiple parts, if the blade disc cannot rotate at a uniform speed and stably, the operator will need to frequently adjust the blade disc position manually, which will affect the grinding efficiency of the grinding equipment. Utility Model Content

[0006] In order to solve the problems that existing grinding equipment cannot ensure that the blade is in the center position when fixed and cannot achieve uniform and stable rotation of the blade, the purpose of this utility model is to provide an automatic grinding device for coffee grinder blades.

[0007] To solve the above technical problems, the present invention adopts the following technical solution: an automatic grinding device for a coffee grinder includes a worktable, a placement plate rotatably mounted inside the worktable, a rotating mechanism for use with the placement plate inside the worktable, a central fixing mechanism jointly provided inside and on the lower surface of the placement plate, a protective cover fixedly connected to the upper surface of the worktable, a first cylinder fixedly mounted on the upper surface of the protective cover, and the output end of the first cylinder passing through the protective cover and fixedly connected to a mounting bracket, a DC motor fixedly mounted on one side of the mounting bracket, and the output end of the DC motor passing through one side of the mounting bracket and fixedly connected to a grinding blade, the central fixing mechanism including a support frame, the support frame fixedly mounted on the lower surface of the placement plate, a second cylinder fixedly mounted inside the support frame, a circular plate fixedly connected to the output end of the second cylinder, a first hinge seat fixedly mounted in a circular array on the upper surface of the circular plate, a guide groove formed in a circular array on the upper surface of the placement plate, a fixed rod slidably connected to the inner wall of the guide groove, and a second hinge seat fixedly connected to the bottom end of the fixed rod, the corresponding first hinge seat and second hinge seat jointly hinged to a connecting rod.

[0008] Preferably, the rotating mechanism includes a servo motor, which is fixedly mounted on the lower surface of the worktable. The output end of the servo motor passes through the lower surface of the worktable and is fixedly connected to a gear. A gear ring is fixedly sleeved on the outer surface of the placement disk to cooperate with the gear, and the gear meshes with the gear ring.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] 1. This application uses a centering positioning mechanism to facilitate the fixing of cutter heads of different specifications, ensuring that the cutter head is fixed in a centered position, avoiding displacement of the cutter head during grinding, ensuring grinding accuracy, and effectively improving the stability of equipment operation;

[0011] 2. This application uses a rotating mechanism to facilitate uniform and stable rotation of the cutter head during grinding, eliminating the need for operators to frequently adjust the cutter head position manually, thereby improving the grinding efficiency of the grinding equipment. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a cross-sectional structural diagram of the central fixing mechanism of this utility model.

[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of the rotating mechanism of this utility model.

[0016] In the diagram: 1. Workbench; 2. Centering fixing mechanism; 21. Limiting block; 22. Second hinge seat; 23. Connecting rod; 24. Support frame; 25. Circular plate; 26. Second cylinder; 27. First hinge seat; 28. Guide groove; 29. ​​Rubber anti-slip pad; 201. Limiting groove; 202. Fixing rod; 3. Rotation mechanism; 31. Positioning groove; 32. Positioning ring; 33. Gear ring; 34. Servo motor; 35. Base; 36. Gear; 4. Placement plate; 5. Protective cover; 6. Grinding blade; 7. Mounting bracket; 8. First cylinder; 9. DC motor. Detailed Implementation

[0017] 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.

[0018] Example: Figure 1-3 As shown, this utility model provides an automatic grinding device for a coffee grinder blade, including a worktable 1. A placement disc 4 is rotatably mounted inside the worktable 1. A rotating mechanism 3, which works in conjunction with the placement disc 4, drives the placement disc 4 to rotate at a uniform speed, achieving automated grinding and improving efficiency. A central fixing mechanism 2 is provided on the interior and lower surface of the placement disc 4. This mechanism precisely positions and fixes the blade, ensuring it does not shift during grinding and improving grinding accuracy. A protective cover 5 is fixedly connected to the upper surface of the worktable 1. The protective cover 5 is transparent, allowing for easy observation of the grinding process while preventing dust from splashing and ensuring operational safety.

[0019] A first cylinder 8 is fixedly installed on the upper surface of the protective cover 5. The first cylinder 8 realizes the vertical lifting and lowering adjustment of the grinding blade 6 to adapt to the grinding needs of blades of different thicknesses. The output end of the first cylinder 8 passes through the protective cover 5 and is fixedly connected to the mounting bracket 7. A DC motor 9 is fixedly installed on one side of the mounting bracket 7, and the output end of the DC motor 9 passes through one side of the mounting bracket 7 and is fixedly connected to the grinding blade 6, providing high-speed rotation power to ensure efficient grinding of the blade surface.

[0020] The central fixing mechanism 2 includes a support frame 24, which is fixedly installed on the lower surface of the placement tray 4. A second cylinder 26 is fixedly installed inside the support frame 24. A circular plate 25 is fixedly connected to the output end of the second cylinder 26, so that the output end of the second cylinder 26 can drive the circular plate 25 to move. A first hinge seat 27 is fixedly installed in a ring array on the upper surface of the circular plate 25. A guide groove 28 is opened in a ring array on the upper surface of the placement tray 4. A fixing rod 202 is slidably connected to the inner wall of the guide groove 28. A rubber anti-slip pad 29 is fixedly installed on one side of the fixing rod 202. The rubber anti-slip pad 29 increases the friction and prevents the cutter head from sliding, while avoiding rigid contact that could damage the surface of the cutter head.

[0021] The inner wall of the guide groove 28 is symmetrically provided with limiting grooves 201. The two sides of the fixed rod 202 are symmetrically fixedly connected with limiting blocks 21. The corresponding limiting blocks 21 are slidably connected with the limiting grooves 201, constraining the movement trajectory of the fixed rod 202 and ensuring that it slides linearly along the guide groove 28, thereby improving positioning stability. The bottom end of the fixed rod 202 is fixedly connected with a second hinge seat 22. The corresponding first hinge seat 27 and second hinge seat 22 are hinged together with a connecting rod 23. The hinge structure is used to convert linear motion into radial synchronous contraction or expansion, which can adapt to different diameter cutter heads, realize automated centering clamping, eliminate the need for manual adjustment, reduce operation errors, and improve work efficiency.

[0022] The rotating mechanism 3 includes a servo motor 34, which is fixedly mounted on the lower surface of the worktable 1. The servo motor 34 provides high-precision control to ensure uniform rotation of the cutter head and improve grinding uniformity. A base 35 for use with the servo motor 34 is fixedly mounted on the lower surface of the worktable 1. The servo motor 34 is fixedly mounted inside the base 35, which provides a stable mounting position for the servo motor 34. The output end of the servo motor 34 passes through the lower surface of the worktable 1 and is fixedly connected to a gear 36, so that the output end of the servo motor 34 can drive the gear 36 to rotate. A gear ring 33 for use with the gear 36 is fixedly sleeved on the outer surface of the placement disk 4. The gear 36 and the gear ring 33 mesh with each other. The rotation of the gear 36 drives the rotation of the gear ring 33, and the rotation of the gear ring 33 drives the rotation of the placement disk 4.

[0023] A positioning ring 32 is fixedly sleeved on the outer surface of the placement disk 4. A positioning groove 31 is opened inside the worktable 1 to cooperate with the positioning ring 32. The positioning ring 32 is rotatably connected to the inner wall of the positioning groove 31. The cooperation between the positioning ring 32 and the positioning groove 31 constrains the axial and radial displacement of the placement disk 4, ensuring rotational accuracy. The rotation speed can be dynamically adjusted according to the grinding requirements to adapt to different material cutting disks.

[0024] Working principle: First, place the grinder blade to be ground on the upper surface of the placement tray 4. At this time, the centering fixing mechanism 2 is activated. When the second cylinder 26 is activated, its output end pushes the circular plate 25 upward. The first hinge seat 27 distributed in a ring array on the upper surface of the circular plate 25 moves accordingly. It is hinged to the second hinge seat 22 at the bottom of the fixed rod 202 through the connecting rod 23, which drives the fixed rod 202 to make radial linear movement along the guide groove 28.

[0025] The symmetrically opened limiting grooves 201 on the inner wall of the guide groove 28 slide in cooperation with the limiting blocks 21 on both sides of the fixed rod 202 to ensure the stability of the movement trajectory of the fixed rod 202 and avoid deviation. As multiple fixed rods 202 move towards the center in sync, the rubber anti-slip pad 29 on one side of it comes into close contact with the edge of the cutter head, and the cutter head is clamped and fixed in the center by using friction. It can be adapted to cutter heads of different specifications.

[0026] After the cutter head is fixed, the rotating mechanism 3 starts to work. After the servo motor 34 starts, its output end drives the gear 36 to rotate. The gear 36 meshes with the gear ring 33 fixedly sleeved on the outer surface of the placement disk 4, transmitting the rotational power of the servo motor 34 to the placement disk 4, driving the placement disk 4 to rotate around its own axis.

[0027] The positioning ring 32 on the outer surface of the placement disk 4 is rotatably connected to the inner wall of the positioning groove 31 inside the worktable 1, which constrains the axial and radial displacement of the placement disk 4, ensuring that the rotation process is stable and accurate, and providing a uniform rotation basis for the grinding of the cutter head.

[0028] As the blade disc rotates stably with the placement disc 4, the grinding operation begins. The first cylinder 8 is fixed to the upper surface of the protective cover 5, which is transparent for easy observation of the grinding process. The output end of the first cylinder 8 pushes the mounting bracket 7 to move vertically, causing the DC motor 9 on one side of the mounting bracket 7 and the grinding blade 6 to move downwards and adjust to the appropriate grinding position.

[0029] The DC motor 9 starts, driving the grinding blade 6 to rotate at high speed, grinding the surface of the rotating blade disc. During the grinding process, the contact pressure between the grinding blade 6 and the blade disc can be controlled by adjusting the first cylinder 8, and the speed of the DC motor 9 can be adjusted, according to the material and wear condition of the blade disc, to achieve efficient and precise grinding.

[0030] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An automatic grinding device for coffee grinders, comprising a worktable (1), characterized in that: The workbench (1) has a rotating placement plate (4) inside. The workbench (1) has a rotating mechanism (3) that works with the placement plate (4). The placement plate (4) has a central fixing mechanism (2) on its interior and lower surface. The workbench (1) has a protective cover (5) fixedly connected to its upper surface. The protective cover (5) has a first cylinder (8) fixedly installed on its upper surface. The output end of the first cylinder (8) passes through the protective cover (5) and is fixedly connected to a mounting bracket (7). A DC motor (9) is fixedly installed on one side of the mounting bracket (7). The output end of the DC motor (9) passes through one side of the mounting bracket (7) and is fixedly connected to a grinding blade (6).

2. The automatic grinding equipment for a coffee grinder blade as described in claim 1, characterized in that: The central fixing mechanism (2) includes a support frame (24), which is fixedly installed on the lower surface of the placement plate (4). A second cylinder (26) is fixedly installed inside the support frame (24). A circular plate (25) is fixedly connected to the output end of the second cylinder (26). A first hinge seat (27) is fixedly installed in an annular array on the upper surface of the circular plate (25). A guide groove (28) is opened in an annular array on the upper surface of the placement plate (4). A fixing rod (202) is slidably connected to the inner wall of the guide groove (28), and a second hinge seat (22) is fixedly connected to the bottom end of the fixing rod (202). Correspondingly, the first hinge seat (27) and the second hinge seat (22) are hinged together by a connecting rod (23).

3. The automatic grinding equipment for a coffee grinder blade as described in claim 1, characterized in that: The rotating mechanism (3) includes a servo motor (34), which is fixedly installed on the lower surface of the workbench (1). The output end of the servo motor (34) passes through the lower surface of the workbench (1) and is fixedly connected to a gear (36). A gear ring (33) that works with the gear (36) is fixedly sleeved on the outer surface of the placement disk (4). The gear (36) and the gear ring (33) mesh with each other.

4. The automatic grinding equipment for a coffee grinder blade as described in claim 1, characterized in that: The protective cover (5) is a transparent cover.

5. The automatic grinding equipment for a coffee grinder blade as described in claim 2, characterized in that: The inner wall of the guide groove (28) is symmetrically provided with limiting grooves (201), and the two sides of the fixing rod (202) are symmetrically fixedly connected with limiting blocks (21), and the corresponding limiting blocks (21) are slidably connected with the limiting grooves (201).

6. The automatic grinding equipment for a coffee grinder blade as described in claim 2, characterized in that: A rubber anti-slip pad (29) is fixedly installed on one side of the fixing rod (202).

7. The automatic grinding equipment for a coffee grinder blade as described in claim 3, characterized in that: The lower surface of the workbench (1) is fixedly mounted with a base (35) for use with a servo motor (34), and the servo motor (34) is fixedly mounted inside the base (35).

8. The automatic grinding equipment for a coffee grinder blade as described in claim 3, characterized in that: A positioning ring (32) is fixedly sleeved on the outer surface of the placement tray (4), and a positioning groove (31) is opened inside the worktable (1) to cooperate with the positioning ring (32). The positioning ring (32) is rotatably connected to the inner wall of the positioning groove (31).

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