Grinding device adjusting structure

Abstract

The utility model relates to the technical field of grinding machines, in particular to a grinding device adjusting structure. Comprising a support, a grinding assembly, a motor and an adjusting assembly, the adjusting assembly comprises a moving block and an adjusting rod, an action cavity is formed in the support, and the moving block is arranged in the action cavity in a vertically movable mode; a rotatable transmission shaft is arranged on the moving block, the first end of the transmission shaft is connected with the grinding assembly in a matched mode, and the second end of the transmission shaft is in transmission connection with the motor. A shaft seat is arranged on one side of the support, and the adjusting rod penetrates through the shaft seat and is in threaded connection with the shaft seat. A guide surface is arranged on the moving block, and the first end of the adjusting rod abuts against the guide surface so as to drive the moving block; according to the adjusting structure of the grinding device, the adjusting rod extrudes and abuts against the guide face on the moving block, the moving block is driven, the transmission shaft is driven to move up and down, and therefore thickness adjustment of the grinding assembly is achieved, the overall structure is simple and compact, and stability is good.

Description

Technical Field

[0001] This utility model relates to the field of grinding machine technology, and in particular to an adjustment structure for a grinding device. Background Technology

[0002] A grinder is a device used to crush and grind food ingredients, and can process various food products such as coffee beans, tea leaves, and fruits. The grinding part of a grinder mainly consists of an upper grinding disc and a lower grinding disc. A motor drives the upper or lower grinding disc, and the upper and lower grinding discs rotate relative to each other to grind the material. Of course, the particle size can be controlled by adjusting the distance between the upper and lower grinding discs.

[0003] Chinese Patent CN 212307620U discloses a blade adjustment structure for a coffee grinder, comprising a housing, a motor and a blade connected to the motor installed inside the housing; a grinding chamber is provided on the inner side of the upper end of the housing; the blade is located in the grinding chamber, and the blade includes an upper blade and a lower blade; the motor includes a rotating shaft and a motor body; an upper slider is slidably connected to the rotating shaft; a lower blade seat is fixed above the upper slider; the lower blade is fixed above the lower blade seat; an upper blade seat is connected to the upper part of the housing; the upper blade is fixed below the upper blade seat; a base is connected to the upper part of the motor body; a lower slider is slidably connected laterally above the base; the upper end face of the lower slider is an inclined guide surface; the lower end face of the upper slider is in close contact with the upper end face of the lower slider; a shaft is threaded to one end of the lower slider; a knob is connected to the other end of the shaft through the housing; the knob is rotatably connected to the housing; a pressure seat is connected to the top of the rotating shaft; a first spring is connected between the pressure seat and the lower blade seat.

[0004] The existing technology has a complex overall structure, with many components controlling the movement of the upper / lower cutter heads. Assembly is difficult, and tolerances can easily accumulate between the components, resulting in reduced adjustment accuracy and poor reliability and stability.

[0005] Therefore, existing technologies still need to be improved and developed. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a reasonable, reliable, and highly precise adjustment structure for a grinding device.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] The present invention discloses a grinding device adjustment structure, comprising a support, a grinding assembly, a motor, and an adjustment assembly. The adjustment assembly includes a moving block and an adjustment rod. The support has an actuating cavity, and the moving block is movably disposed within the actuating cavity. The moving block has a rotatable transmission shaft, the first end of which is connected to the grinding assembly, and the second end of which is connected to the motor. The support has a bearing seat on one side, and the adjustment rod passes through the bearing seat and is threadedly connected to it. The moving block has a guide surface, and the first end of the adjustment rod abuts against the guide surface to drive the moving block.

[0009] The grinding assembly is used to pulverize food ingredients. A motor drives the grinding assembly to rotate relative to each other via a drive shaft, thus pulverizing the food ingredients. It is understood that the grinding assembly has a grinding chamber, which consists of two relatively rotatable grinding discs. The gap between the two grinding discs determines the fineness of the grinding. Preferably, the moving block can move up and down along the action chamber, and the moving block, driving the drive shaft and one of the grinding discs, can change the aforementioned gap.

[0010] Specifically, a bearing seat is provided on one side of the bracket, and the adjusting rod is threadedly connected to the bearing seat, allowing it to move laterally on the bearing seat. The adjusting rod can drive the moving block to move up and down along the actuating cavity by abutting against the guide surface. It is known that to convert the lateral displacement of the adjusting rod into vertical displacement, the guide surface must be set at an angle to the reference plane where the moving path of the adjusting rod is located, thereby causing the moving block to move in a direction perpendicular to the reference plane. This utility model has a simple overall structure, the guide surface can be flexibly set, it has few parts, and is easy to assemble.

[0011] According to the above scheme, a V-shaped groove or V-shaped hole is formed on the outer wall of the moving block, and one of the inner sidewalls of the V-shaped groove forms a guide surface. The first end of the adjusting rod is inserted into the V-shaped groove and abuts against the guide surface; or, a V-shaped hole is formed on the outer wall of the moving block, and the inner conical surface of the V-shaped hole forms a guide surface. The first end of the adjusting rod is inserted into the V-shaped hole and abuts against the guide surface. As mentioned above, the moving block is provided with a guide surface to convert the lateral displacement of the adjusting rod into the vertical displacement of the moving block. The guide surface needs to be set at an angle with the aforementioned reference plane. It can be understood that the V-shaped groove formed on the outer wall of the moving block must have two inner sidewalls at an angle relative to the reference plane. Of course, the first end of the adjusting rod abuts against the guide surface formed by one of the inner sidewalls. The adjusting rod generates lateral displacement by rotating on the bearing seat and pushes the moving block and the transmission shaft by abutting against the guide surface.

[0012] Similarly, the inner conical surface of the V-shaped hole can also realize the transmission relationship between the adjusting rod and the moving block.

[0013] According to the above scheme, the lower end of the moving block is provided with a beveled surface, which is set at an angle C with the horizontal plane. The beveled surface forms a guide surface, and the first end of the adjusting rod abuts against the guide surface. It can be understood that the cross-section of the moving block can be rectangular, circular, or other shapes, and the moving block can only move up and down within the support due to the restriction of the actuating cavity.

[0014] The lower end of the moving block is provided with a beveled surface, which can be a chamfered plane at the lower end of the moving block. Preferably, in this embodiment, a portion of the lower end of the moving block is removed so that the lower end face of the moving block forms an angle C with the reference plane to obtain the beveled surface. This allows the adjusting rod to have a longer displacement path along the guide surface in the lateral direction. Of course, according to the Pythagorean theorem, the distance of the adjusting rod's lateral displacement is proportional to the distance of the moving block's vertical displacement, and this ratio is related to the value of the angle C.

[0015] The lateral displacement distance generated by the rotation of the adjusting rod on the bearing seat should be less than 1 / 2 the width or radius of the moving block. In particular, the radius of the transmission shaft should be subtracted from this displacement distance to avoid interference.

[0016] Understandably, the included angle C is typically less than 45°. The smaller the included angle C, the smaller the slope of the guide surface, which can make the ratio between the displacement distance of the adjusting rod and the displacement distance of the moving block less than 1, thereby improving the adjustment accuracy of the particle size of the grinding component. Correspondingly, the adjustment range of the particle size of the grinding component becomes smaller.

[0017] Furthermore, a larger guide surface can increase the displacement distance of the adjusting rod to compensate for the inadequacy of the adjustment range mentioned above.

[0018] Of course, the optimal value of the included angle C can be obtained through testing.

[0019] According to the above scheme, the first end of the adjusting rod is provided with a tapered head, which abuts against the guide surface to form a surface contact. The tapered head is a conventional structure. In this embodiment, the advantage of the tapered head is that it matches the circular cross-sectional characteristics of the adjusting rod, and it is convenient to control the taper to adapt to the guide surface, and it is relatively easy to process.

[0020] According to the above scheme, the first end of the adjusting rod is provided with a ball head, which pairs with and abuts against the guide surface to form a line contact. In this embodiment, the ball head is hemispherical. The circular cross-sectional characteristics of the adjusting rod make it easy to process the adjusting rod to obtain the ball head through a cutting process. Of course, it is even easier to process the adjusting rod and the ball head thereon using a forming process. The adjusting rod forms a line contact with the guide surface through the ball head, which can reduce the frictional resistance of the adjusting rod when driving the moving block.

[0021] According to the above scheme, a spring is provided inside the actuating cavity. The upper end of the spring contacts and connects to the bracket, and the lower end of the spring contacts and connects to the moving block. The transmission shaft is rotatably connected to the moving block through a bearing. As described above, the adjusting rod can drive the moving block to move upward through the guide surface. When the adjusting rod moves in the opposite direction, the moving block can also be reset under the action of gravity. Preferably, a spring is provided inside the actuating cavity to make it easier for the moving block to reset.

[0022] According to the above scheme, the upper end of the support is provided with a grinding chamber, and the grinding chamber is provided with a bean hopper; the grinding assembly includes an upper grinding disc and a lower grinding disc, the upper grinding disc is fixedly installed in the upper inner cavity of the grinding chamber, and the lower grinding disc is rotatably installed in the lower inner cavity of the grinding chamber. The first end of the drive shaft passes through the grinding chamber and is fixedly connected to the lower grinding disc. The bean hopper, grinding chamber, upper grinding disc, and lower grinding disc are existing technologies. The upper end of the grinding chamber is provided with a through hole so that the ingredients such as coffee beans in the bean hopper can fall into the grinding chamber between the upper and lower grinding discs. The bottom of the grinding chamber is also provided with a through hole so that the first end of the drive shaft can pass through the grinding chamber and be fixedly connected to the lower grinding disc. The motor can drive the lower grinding disc to rotate relative to the upper grinding disc through the drive shaft, thereby grinding and pulverizing the ingredients.

[0023] According to the above scheme, the lower end of the bracket is fixedly connected to the motor, and the second end of the transmission shaft is provided with an input interface, which is paired with the output shaft of the motor. The transmission shaft moves up and down with the moving block; therefore, the input interface on the second end of the transmission shaft is used to match the output shaft of the motor to achieve a transmission connection. There can be displacement between the output interface and the output shaft of the motor while maintaining the transmission connection. For example, the input interface can be coaxially arranged with the output shaft of the motor, and the two can be connected using existing gears or pins. Alternatively, the input interface can be eccentrically arranged with the output shaft of the motor; the input interface can be a gear, and a gear is also provided on the output shaft of the motor, achieving a transmission connection through gear meshing.

[0024] The present invention discloses a grinding device adjustment structure, which drives the moving block and drives the transmission shaft to move up and down by pressing the adjusting rod against the guide surface of the moving block, thereby realizing the adjustment of the coarseness of the grinding component. The overall structure is simple and compact and has good stability. Attached Figure Description

[0025] Figure 1 This is a schematic cross-sectional view of Embodiment 1 of this utility model;

[0026] Figure 2 This is a schematic cross-sectional view of Embodiment 2 of this utility model;

[0027] Figure 3 This is a schematic cross-sectional view of Embodiment 3 of this utility model.

[0028] In the diagram: 1. Support; 2. Moving block; 3. Shaft seat; 11. Motor; 12. Action chamber; 13. Spring; 14. Grinding chamber; 15. Bean hopper; 16. Upper grinding disc; 17. Lower grinding disc; 18. Input interface; 21. Adjusting rod; 22. Drive shaft; 23. Guide surface; 24. Conical head; 25. Ball head; 26. Bearing. Detailed Implementation

[0029] The technical solution of this utility model will be described below with reference to the accompanying drawings and embodiments.

[0030] Example 1

[0031] like Figure 1 As shown, the grinding device adjustment structure of this utility model includes a support 1, a grinding component, a motor 11, and an adjustment component. The adjustment component includes a moving block 2 and an adjustment rod 21. The support 1 has an action cavity 12, and the moving block 2 is movably disposed in the action cavity 12. The moving block 2 is provided with a rotatable transmission shaft 22. The first end of the transmission shaft 22 is connected to the grinding component, and the second end of the transmission shaft 22 is connected to the motor 11. The support 1 has a bearing seat 3 on one side, and the adjustment rod 21 passes through the bearing seat 3 and is threadedly connected to it. The moving block 2 is provided with a guide surface 23, and the first end of the adjustment rod 21 abuts against the guide surface 23, thereby driving the moving block 2.

[0032] The grinding assembly is used to pulverize food ingredients. The motor 11 drives the grinding assembly to rotate relative to each other via the transmission shaft 22, thus pulverizing and grinding the food ingredients finely. It is understood that the grinding assembly has a grinding chamber, which consists of two relatively rotatable grinding discs. The gap between the two grinding discs determines the fineness of the grinding. Preferably, the moving block 2 can move up and down along the action chamber 12, and the moving block 2 drives the transmission shaft 22 and one of the grinding discs to change the aforementioned gap.

[0033] A spring 13 is provided inside the actuation cavity 12. The upper end of the spring 13 contacts and connects to the bracket 1, and the lower end of the spring 13 contacts and connects to the moving block 2. The transmission shaft 22 is rotatably connected to the moving block 2 through the bearing 26. As described above, the adjusting rod 21 can drive the moving block 2 to move upward by contacting the guide surface 23. When the adjusting rod 21 moves in the opposite direction, the moving block 2 can also be reset under the action of gravity. Preferably, a spring 13 is provided inside the actuation cavity 12 to make it easier for the moving block 2 to reset.

[0034] The upper end of the support 1 is provided with a grinding chamber 14, and the grinding chamber 14 is provided with a bean hopper 15. The grinding assembly includes an upper grinding disc 16 and a lower grinding disc 17. The upper grinding disc 16 is fixedly installed in the upper inner cavity of the grinding chamber 14, and the lower grinding disc 17 is rotatably installed in the lower inner cavity of the grinding chamber 14. The first end of the drive shaft 22 passes through the grinding chamber 14 and is fixedly connected to the lower grinding disc 17. The bean hopper 15, grinding chamber 14, upper grinding disc 16, and lower grinding disc 17 are existing technologies. The upper end of the grinding chamber 14 is provided with a through hole so that the ingredients such as coffee beans in the bean hopper 15 can fall into the grinding chamber between the upper grinding disc 16 and the lower grinding disc 17. The bottom of the grinding chamber 14 is also provided with a through hole so that the first end of the drive shaft 22 can pass through the grinding chamber 14 and be fixedly connected to the lower grinding disc 17. The motor 11 can drive the lower grinding disc 17 to rotate relative to the upper grinding disc 16 through the drive shaft 22, thereby grinding and pulverizing the ingredients.

[0035] The lower end of the bracket 1 is fixedly connected to the motor 11. An input interface 18 is provided on the second end of the transmission shaft 22, and the input interface 18 is paired with the output shaft of the motor 11. The transmission shaft 22 moves vertically with the moving block 2; therefore, the input interface 18 on the second end of the transmission shaft 22 is used to match the output shaft of the motor 11 to achieve a transmission connection. There can be displacement between the output interface and the output shaft of the motor 11 while maintaining a transmission connection. For example, the input interface 18 can be coaxially arranged with the output shaft of the motor 11, and the two can be connected using existing gears or pins. Alternatively, the input interface 18 can be eccentrically arranged with the output shaft of the motor 11. The input interface 18 can be a gear, and a gear is also provided on the output shaft of the motor 11, achieving a transmission connection through gear meshing.

[0036] Specifically, a bearing seat 3 is provided on one side of the bracket 1. The adjusting rod 21 is threadedly connected to the bearing seat 3, allowing it to move laterally on the bearing seat 3. The adjusting rod 21 can drive the moving block 2 to move up and down along the actuating cavity 12 by abutting against the guide surface 23. It is known that to convert the lateral displacement of the adjusting rod 21 into vertical displacement, the guide surface 23 must be set at an angle to the reference plane where the moving path of the adjusting rod 21 is located, thereby causing the moving block 2 to move in a direction perpendicular to the reference plane. This utility model has a simple overall structure, the guide surface 23 can be flexibly set, it has few parts, and is easy to assemble.

[0037] The outer wall of the movable block 2 is provided with a V-shaped groove or a V-shaped hole. One of the inner sidewalls of the V-shaped groove forms a guide surface 23. The first end of the adjusting rod 21 is inserted into the V-shaped groove and abuts against the guide surface 23. Alternatively, the outer wall of the movable block 2 is provided with a V-shaped hole. The inner conical surface of the V-shaped hole forms the guide surface 23. The first end of the adjusting rod 21 is inserted into the V-shaped hole and abuts against the guide surface 23. As described above, the guide surface 23 on the movable block 2 converts the lateral displacement of the adjusting rod 21 into the vertical displacement of the movable block 2. The guide surface 23 needs to be set at an angle with the aforementioned reference plane. It can be understood that the V-shaped groove on the outer wall of the movable block 2 must have two inner sidewalls at an angle relative to the reference plane. Of course, the first end of the adjusting rod 21 abuts against the guide surface 23 formed by one of the inner sidewalls. The adjusting rod 21 generates lateral displacement by rotating on the bearing seat 3 and pushes the movable block 2 and the transmission shaft 22 by abutting against the guide surface 23.

[0038] Similarly, the inner conical surface of the V-shaped hole can also realize the transmission relationship between the adjusting rod 21 and the moving block 2.

[0039] Specifically, the first end of the adjusting rod 21 is provided with a tapered head 24, which abuts against the guide surface 23 to form a surface contact. The tapered head 24 is a conventional structure. In this embodiment, the advantage of the tapered head 24 is that it matches the circular cross-sectional characteristics of the adjusting rod 21, and it is convenient to control the taper to fit the guide surface 23, and it is relatively easy to process.

[0040] Example 2

[0041] like Figure 2 As shown, the difference between this embodiment and Embodiment 1 is only that the lower end of the moving block 2 is provided with a beveled surface, which is set at an angle C with the horizontal plane. The beveled surface forms a guide surface 23, and the first end of the adjusting rod 21 abuts against the guide surface 23. It can be understood that the cross-section of the moving block 2 can be rectangular, circular, or other shapes. The moving block 2 is restricted by the action cavity 12 and can only move up and down within the bracket 1.

[0042] The lower end of the moving block 2 is provided with a chamfered surface, which can be the chamfered plane of the lower end of the moving block 2. Preferably, in this embodiment, a portion of the lower end of the moving block 2 is removed so that the lower end face of the moving block 2 forms an angle C with the reference plane to obtain the chamfered surface. This allows the adjusting rod 21 to have a longer displacement path along the guide surface 23 in the lateral direction. Of course, according to the Pythagorean theorem, the distance of the adjusting rod 21 in the lateral direction is proportional to the distance of the moving block 2 in the vertical direction, and this ratio is related to the value of the angle C.

[0043] The lateral displacement distance generated by the rotation of the adjusting rod 21 on the bearing 3 should be less than 1 / 2 the width or radius of the moving block 2. In particular, the radius of the transmission shaft 22 needs to be subtracted from this displacement distance to avoid interference.

[0044] Understandably, the included angle C is typically less than 45°. The smaller the included angle C, the smaller the slope of the guide surface 23, which can make the ratio between the displacement distance of the adjusting rod 21 and the displacement distance of the moving block 2 less than 1, thereby improving the adjustment accuracy of the particle size of the grinding assembly. Correspondingly, the adjustment range of the particle size of the grinding assembly becomes smaller.

[0045] Furthermore, a larger guide surface 23 can increase the displacement distance of the adjusting rod 21 to compensate for the inadequacy of the adjustment range mentioned above.

[0046] Of course, the optimal value of the included angle C can be obtained through testing.

[0047] The first end of the adjusting rod 21 is provided with a tapered head 24, which abuts against the guide surface 23 to form a surface contact. The tapered head 24 is a conventional structure. In this embodiment, the advantage of the tapered head 24 is that it matches the circular cross-sectional characteristics of the adjusting rod 21, and it is convenient to control the taper to fit the guide surface 23, and it is relatively easy to process.

[0048] Example 3

[0049] like Figure 3 As shown, the difference between this embodiment and Embodiment 2 is only that the first end of the adjusting rod 21 is provided with a ball head 25, which abuts against the guide surface 23 to form a line contact. In this embodiment, the ball head 25 is hemispherical. The circular cross-section of the adjusting rod 21 makes it easy to process the adjusting rod 21 to obtain the ball head 25 through a cutting process. Of course, it is even easier to process the adjusting rod 21 and its ball head 25 using a forming process. The adjusting rod 21, through the ball head 25 abutting against the guide surface 23, forms a line contact with the guide surface 23, which can reduce the frictional resistance of the adjusting rod 21 when driving the moving block 2.

[0050] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A grinding device adjustment structure, comprising a support (1), a grinding assembly, a motor (11), and an adjustment assembly, wherein the adjustment assembly comprises a moving block (2) and an adjustment rod (21), the support (1) having an action cavity (12), the moving block (2) being movably disposed within the action cavity (12); the moving block (2) having a rotatable transmission shaft (22), the first end of the transmission shaft (22) being connected to the grinding assembly, and the second end of the transmission shaft (22) being connected to the motor (11); characterized in that: The bracket (1) is provided with a bearing seat (3) on one side, and the adjusting rod (21) passes through the bearing seat (3) and is threadedly connected to it; The movable block (2) is provided with a guide surface (23), and the first end of the adjusting rod (21) abuts against the guide surface (23) so as to drive the movable block (2).

2. The grinding device adjustment structure according to claim 1, characterized in that, The outer side wall of the movable block (2) is provided with a V-shaped groove or a V-shaped hole, one of the inner side walls of the V-shaped groove forms a guide surface (23), and the first end of the adjusting rod (21) is inserted into the V-shaped groove and abuts against the guide surface (23); or, the outer side wall of the movable block (2) is provided with a V-shaped hole, the inner conical surface of the V-shaped hole forms a guide surface (23), and the first end of the adjusting rod (21) is inserted into the V-shaped hole and abuts against the guide surface (23).

3. The grinding device adjustment structure according to claim 1, characterized in that, The lower end of the moving block (2) is provided with a beveled surface, which is set at an angle C with the horizontal plane. The beveled surface forms a guide surface (23), and the first end of the adjusting rod (21) abuts against the guide surface (23).

4. The grinding device adjustment structure according to claim 2 or 3, characterized in that, The first end of the adjusting rod (21) is provided with a conical head (24), which is paired with the guide surface (23) to form a surface contact.

5. The grinding device adjustment structure according to claim 3, characterized in that, The first end of the adjusting rod (21) is provided with a ball head (25), and the ball head (25) is paired with the guide surface (23) to form a line contact.

6. The grinding device adjustment structure according to claim 1, characterized in that, The action chamber (12) is provided with a spring (13), the upper end of the spring (13) touches the connecting bracket (1), the lower end of the spring (13) touches the connecting block (2), and the transmission shaft (22) is rotatably connected to the connecting block (2) through the bearing (26).

7. The grinding device adjustment structure according to claim 1, characterized in that, The upper end of the support (1) is provided with a grinding chamber (14), and the grinding chamber (14) is provided with a bean hopper (15); the grinding assembly includes an upper grinding disc (16) and a lower grinding disc (17). The upper grinding disc (16) is fixedly installed in the upper inner cavity of the grinding chamber (14), and the lower grinding disc (17) is rotatably installed in the lower inner cavity of the grinding chamber (14). The first end of the drive shaft (22) passes through the grinding chamber (14) and is fixedly connected to the lower grinding disc (17).

8. The grinding device adjustment structure according to claim 1, characterized in that, The lower end of the bracket (1) is fixedly connected to the motor (11), and the second end of the transmission shaft (22) is provided with an input interface (18), which is paired with the output shaft of the motor (11).

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