Grinding cutter head adjusting structure

Abstract

The utility model relates to the technical field of grinding machines, in particular to a grinding cutterhead adjusting structure. Comprising a main machine, a base and an adjusting assembly are arranged on the main machine, an upper tool apron and a lower tool apron are arranged in the base, the upper tool apron is fixedly connected with the base, and the lower tool apron is movably arranged below the upper tool apron; the adjusting assembly comprises a lifting sleeve and a spiral seat, a through hole is formed in the bottom of the base, and the lifting sleeve is arranged in the through hole in a vertically movable and penetrating mode and is connected with the lower tool apron in a matched mode; the spiral seat is in threaded connection with the lifting sleeve, an adjusting seat is arranged on the main machine, and the spiral seat is rotationally connected with the adjusting seat; according to the grinding cutterhead adjusting structure, the spiral base is rotatably arranged on the adjusting base, the spiral base and the lifting sleeve are matched through threads, the assembly precision is easy to control, the lifting sleeve drives the lower cutter base to move up and down, adjustment is accurate, the precision is high, the grinding uniformity of a large-size cutterhead can be guaranteed, and the grinding quality is improved.

Description

Technical Field

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

[0002] A grinder is a device used to crush and grind food ingredients. It can be further categorized into coffee grinders, pulverizers, blenders, etc., and is mainly used for processing coffee beans, tea leaves, fruits, and various other food products. The grinding section of a coffee grinder on the market 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 discs rotate relative to each other to grind the material. Existing coffee grinders control the particle size by adjusting the distance between the upper and lower grinding discs. When using a larger diameter grinding disc (90cm), the adjustment mechanism of the upper grinding disc increases the size of the upper material container, making the overall structure more complex.

[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] In the aforementioned prior art, the rotation of the shaft simultaneously drives the lower slider to move left and right. The lower slider, via an inclined guide surface, drives the upper slider and the lower cutter head seat to move up and down, thereby adjusting the distance between the lower and upper cutter heads. The overall structure of this solution is relatively complex, difficult to assemble, and requires strict control over the fitting precision between components. However, ensuring the parallelism of the inclined guide surfaces between the upper and lower sliders is still challenging. Lateral movement of the lower slider causes a shift in the center of gravity of the lower cutter head seat and the cutter head. Especially with the vertical grinding pressure between the upper and lower cutter heads, tilting can occur, resulting in uneven grinding particle size and poor grinding effect. Therefore, the existing technology requires further improvement and development. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a grinding disc adjustment structure that is structurally sound, stable, and ensures particle uniformity.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] The present invention discloses a grinding disc adjustment structure, comprising a main unit, a base and an adjustment assembly, wherein an upper cutter holder and a lower cutter holder are provided in the base, the upper cutter holder is fixedly connected to the base, and the lower cutter holder is movably disposed below the upper cutter holder; the adjustment assembly includes a lifting sleeve and a spiral seat, the bottom of the base is provided with a through hole, the lifting sleeve is movably inserted through the through hole, and the lifting sleeve is engaged with the lower cutter holder; the spiral seat is threadedly connected to the lifting sleeve, and the main unit is provided with an adjustment seat, the spiral seat being rotatably connected to the adjustment seat.

[0008] The upper and lower blade holders can rotate relative to each other to grind the food. The space between the upper and lower blade holders is a grinding chamber, and the distance between them controls the coarseness of the grind. Specifically, the upper blade holder is fixedly mounted on the base, and the lower blade holder changes the grinding distance by moving up and down. Further, the spiral seat is rotatably mounted on the adjusting seat, and the lifting sleeve is slidably mounted in the through hole of the base. The spiral seat and the lifting sleeve are connected by a thread. When the spiral seat rotates on the adjusting seat, it can drive the lifting sleeve to slide up and down along the through hole, thereby causing the lower blade holder to change its distance from the upper blade holder.

[0009] It is understood that the rotatable connection between the screw seat and the adjusting seat can prevent the screw seat from tilting in the horizontal direction, and convert the rotational motion of the screw seat into the linear motion of the lifting sleeve in the vertical direction. At the same time, the lifting sleeve is constrained by the shape and position of the through hole. Of course, the depth of the through hole is not limited. The depth of the through hole is matched with the height and displacement of the lifting sleeve, which can effectively improve the structural stability of the adjusting component and prevent the movement of the lifting sleeve from affecting the stability of the lower cutter head.

[0010] According to the above scheme, the adjustment assembly also includes an adjustment rod. A bevel gear is provided at the lower end of the spiral seat. The adjustment rod is rotatably connected to the adjustment seat. A bevel gear is provided at the first end of the adjustment rod, meshing with the bevel gear. A knob is provided at the second end of the adjustment rod. To make the overall structure more compact, the adjustment rod is arranged laterally on one side of the spiral seat. The adjustment rod can rotate on the adjustment seat, allowing the bevel gear and bevel gear to mesh. Rotating the knob drives the spiral seat to rotate. It is understood that the spiral seat and the lifting sleeve are connected by a threaded connection. The threaded connection has self-locking properties. The pressure generated during grinding is transmitted to the lifting sleeve via the lower cutter holder, and then this pressure is also transmitted to the spiral seat, increasing the friction between the lower end face of the spiral seat and the adjustment seat, thereby limiting the rotation of the spiral seat. No additional locking structure is needed to limit the spiral seat, and it also ensures that the lower cutter holder will not loosen and affect the grinding particle size.

[0011] Furthermore, when adjusting the distance between the lower and upper cutter holders, there is no pressure between them, allowing the adjusting rod to easily drive the spiral seat, thereby adjusting the distance between the lower and upper cutter holders and changing the grinding particle size.

[0012] Understandably, the knob has markings, making adjustments more intuitive and precise.

[0013] According to the above scheme, the upper tool holder is provided with a first tool disc, which is fixedly connected to the base via the upper tool holder; the lower tool holder is provided with a second tool disc, which is fixedly connected to the lower tool holder. The lifting sleeve can drive the lower tool holder to move up and down, thereby changing the distance H between the first and second tool discs. Similarly, the second tool disc on the lower tool holder can move up and down to change the distance H, thereby driving the second tool disc to rotate via the lower tool disc, cooperating with the first tool disc to achieve grinding.

[0014] According to the above scheme, a grinding chamber is formed between the first and second cutter discs. The upper cutter holder is provided with a feed inlet and also includes a hopper. The hopper is paired and connected to the upper cutter holder so as to communicate with the grinding chamber through the feed inlet. Since the upper cutter holder and the first cutter disc are fixedly set, the food stored in the hopper can enter the grinding chamber for grinding through the feed inlet.

[0015] According to the above scheme, the upper end of the lifting sleeve is provided with a first bearing, and the lifting sleeve is rotatably connected to the lower tool holder through the first bearing. The lifting sleeve and the lower tool holder are connected by the first bearing, which can be a conventional ring bearing or a plane bearing, so that a vertical connection is established between the lifting sleeve and the lower tool holder. That is, the lifting sleeve can drive the lower tool holder to move up and down, but the rotation of the lower tool holder will not drive the lifting sleeve to rotate.

[0016] According to the above scheme, the main unit is equipped with a motor, and the motor has a drive shaft. The lower end of the drive shaft is rotatably connected to the adjusting seat through a second bearing. The lower tool holder is equipped with a bushing, and the drive shaft is movably inserted through the bushing. A reset component is provided between the upper end of the drive shaft and the bushing, and the drive shaft and the bushing are connected by transmission. Preferably, in the vertical direction, the lower tool holder of this utility model is restricted at the lower end by a lifting sleeve and at the upper end by a reset component, so that it is fitted onto the drive shaft through the bushing, and the lower tool holder can move up and down along the drive shaft to change the aforementioned distance H. Furthermore, the lower tool holder is connected to the drive shaft, and the motor can drive the lower tool holder and the second cutter disc to rotate through the drive shaft.

[0017] According to the above scheme, the lower end of the bushing is provided with an open keyway, and a lever is provided on the transmission shaft. The lower end of the bushing passes through the first bearing so that the lever passes through the open keyway. The lower end of the open keyway penetrates the lower end face of the bushing, so that when the lower tool holder is assembled on the transmission shaft, the lever can be inserted into the open keyway, and the engagement of the lever with the open keyway can cause the transmission shaft to drive the bushing and the lower tool holder to rotate. Furthermore, the open keyway is opened in the vertical direction, so that the lever and the bushing can be phase-displaced in the vertical direction without disrupting the above-mentioned transmission relationship. That is, when the lower tool holder moves up and down to adjust the distance H, the lever is always inserted into the open keyway of the bushing.

[0018] According to the above scheme, the reset assembly includes a locking head, a pressure cap, and a reset spring. The locking head fixes the pressure cap to the upper end of the drive shaft; the reset spring is sleeved on the drive shaft, with its upper end contacting the pressure cap and its lower end contacting the bushing. The aforementioned lifting sleeve is connected to the lower tool holder via a first bearing, thereby pushing the lifting sleeve upward. However, when the lifting sleeve is adjusted downward, it cannot move the lower tool holder. Of course, the lower tool holder can also move downward automatically under the action of gravity or the grinding pressure of the grinding chamber.

[0019] The locking head is used to vertically limit the bushing and the lower tool holder on the drive shaft to complete the assembly. Furthermore, a pressure cap and a return spring are provided between the locking head and the bushing. The return spring can provide a pressure so that the lower tool holder always tends to move towards the lifting sleeve and contact the first bearing on it, ensuring the stability of the lower tool disc and the balance of the second tool disc.

[0020] This utility model discloses a grinding disc adjustment structure, wherein the spiral seat is rotatably mounted on the adjustment seat, and the spiral seat and the lifting sleeve are connected by threads, making the assembly accuracy easy to control. The lifting sleeve drives the lower cutter holder to move up and down, and the adjustment is accurate and precise, which can ensure the grinding uniformity of large-size cutter discs and improve the grinding quality. Attached Figure Description

[0021] Figure 1This is a schematic cross-sectional view of the overall structure of this utility model;

[0022] Figure 2 yes Figure 1 Enlarged structural diagram of section A in the middle;

[0023] Figure 3 This is a schematic diagram of the adjustment component and the disassembled base structure of this utility model.

[0024] In the diagram: 1. Main unit; 2. Base; 11. Lifting sleeve; 12. Screw seat; 13. Adjusting seat; 14. Adjusting rod; 15. Hopper; 16. First bearing; 17. Motor; 18. Drive shaft; 120. Bevel gear; 140. Conical gear; 141. Knob; 180. Second bearing; 181. Lever; 21. Upper cutter holder; 22. Lower cutter holder; 23. Through hole; 24. Bushing; 25. Lock head; 26. Pressure cap; 27. Return spring; 210. First cutter disc; 211. Feed inlet; 220. Second cutter disc; 240. Open keyway. Detailed Implementation

[0025] The technical solution of this utility model will be described below with reference to the accompanying drawings and embodiments.

[0026] like Figure 1-3 As shown, the grinding disc adjustment structure of this utility model includes a main unit 1, a base 2 and an adjustment assembly on the main unit 1. The base 2 has an upper cutter holder 21 and a lower cutter holder 22. The upper cutter holder 21 is fixedly connected to the base 2, and the lower cutter holder 22 is movably disposed below the upper cutter holder 21. The adjustment assembly includes a lifting sleeve 11 and a spiral seat 12. The bottom of the base 2 has a through hole 23. The lifting sleeve 11 is movably inserted through the through hole 23 and is connected to the lower cutter holder 22. The spiral seat 12 is threadedly connected to the lifting sleeve 11. The main unit 1 has an adjustment seat 13, and the spiral seat 12 is rotatably connected to the adjustment seat 13.

[0027] The upper blade holder 21 and the lower blade holder 22 can rotate relative to each other to grind the food. The space between the upper blade holder 21 and the lower blade holder 22 is a grinding chamber, and the distance between the upper blade holder 21 and the lower blade holder 22 can control the coarseness of the grinding. Specifically, the upper blade holder 21 is fixedly mounted on the base 2, and the lower blade holder 22 changes the grinding distance by moving up and down. Further, the spiral seat 12 is rotatably mounted on the adjusting seat 13, and the lifting sleeve 11 is slidably mounted up and down in the through hole 23 of the base 2. The spiral seat 12 and the lifting sleeve 11 are threadedly connected. When the spiral seat 12 rotates on the adjusting seat 13, it can drive the lifting sleeve 11 to slide up and down along the through hole 23, thereby causing the lower blade holder 22 to change its distance from the upper blade holder 21.

[0028] It is understood that the rotatable connection between the screw seat 12 and the adjusting seat 13 can prevent the screw seat 12 from tilting in the horizontal direction and convert the rotational motion of the screw seat 12 into the linear motion of the lifting sleeve 11 in the vertical direction. At the same time, the lifting sleeve 11 is constrained by the shape and position of the through hole 23. Of course, the depth of the through hole 23 is not limited. The depth of the through hole 23 is adapted to the height and displacement of the lifting sleeve 11, which can effectively improve the structural stability of the adjusting component and prevent the movement of the lifting sleeve 11 from affecting the stability of the lower cutter head.

[0029] The adjustment assembly also includes an adjustment rod 14. A bevel gear 120 is located at the lower end of the screw seat 12. The adjustment rod 14 is rotatably connected to the adjustment seat 13. A bevel gear 140 is located at the first end of the adjustment rod 14, meshing with the bevel gear 120. A knob 141 is located at the second end of the adjustment rod 14. For a more compact overall structure, the adjustment rod 14 is laterally positioned on one side of the screw seat 12. The adjustment rod 14 can rotate on the adjustment seat 13, allowing the bevel gear 140 to mesh with the bevel gear 120. Rotating the knob 141 drives the screw seat 12 to rotate. It is understood that the spiral seat 12 and the lifting sleeve 11 are connected by a thread. The threaded connection has self-locking properties. The pressure generated by grinding will be transmitted to the lifting sleeve 11 through the lower cutter seat 22, and then the pressure will also be transmitted to the spiral seat 12. This increases the friction between the lower end face of the spiral seat 12 and the adjusting seat 13, thereby limiting the rotation of the spiral seat 12. There is no need to set a separate locking structure to limit the spiral seat 12, and it also ensures that the lower cutter seat 22 will not loosen and affect the grinding particle size.

[0030] Furthermore, when adjusting the distance between the lower cutter holder 22 and the upper cutter holder 21, there is no pressure between them, which allows the adjusting rod 14 to easily drive the spiral seat 12, thereby adjusting the distance between the lower cutter holder 22 and the upper cutter holder 21 and changing the grinding particle size.

[0031] Understandably, the knob 141 has a scale, making the adjustment more intuitive and precise.

[0032] The upper tool holder 21 is provided with a first tool disc 210, which is fixedly connected to the base 2 via the upper tool holder 21. The lower tool holder 22 is provided with a second tool disc 220, which is fixedly connected to the lower tool holder 22. The lifting sleeve 11 can drive the lower tool holder 22 to move up and down, thereby changing the distance H between the first tool disc 210 and the second tool disc 220. Similarly, the second tool disc 220 on the lower tool holder 22 can move up and down to change the distance H, thereby driving the second tool disc 220 to rotate via the lower tool holder, cooperating with the first tool disc 210 to achieve grinding.

[0033] A grinding chamber is formed between the first cutter head 210 and the second cutter head 220. The upper cutter holder 21 is provided with a feed inlet 211 and also includes a hopper 15. The hopper 15 is paired and connected to the upper cutter holder 21 so as to communicate with the grinding chamber through the feed inlet 211. Since the upper cutter holder 21 and the first cutter head 210 are fixedly set, the food stored in the hopper 15 can enter the grinding chamber for grinding through the feed inlet 211.

[0034] The upper end of the lifting sleeve 11 is provided with a first bearing 16, and the lifting sleeve 11 is rotatably connected to the lower tool holder 22 through the first bearing 16. The lifting sleeve 11 and the lower tool holder 22 are connected by the first bearing 16, which can be a conventional annular bearing or a planar bearing, so that a vertical connection is established between the lifting sleeve 11 and the lower tool holder 22. That is, the lifting sleeve 11 can drive the lower tool holder 22 to move up and down, but the rotation of the lower tool holder 22 will not drive the lifting sleeve 11 to rotate.

[0035] The main unit 1 is equipped with a motor 17, and a drive shaft 18 is mounted on the motor 17. The lower end of the drive shaft 18 is rotatably connected to the adjusting seat 13 via a second bearing 180. The lower tool holder 22 is equipped with a bushing 24, and the drive shaft 18 is movably inserted through the bushing 24. A reset assembly is provided between the upper end of the drive shaft 18 and the bushing 24, and the drive shaft 18 and the bushing 24 are connected by transmission. Preferably, in the vertical direction, the lower tool holder 22 of this invention is restricted at its lower end by a lifting sleeve 11 and at its upper end by a reset assembly, thereby being assembled onto the drive shaft 18 via the bushing 24. The lower tool holder 22 can move up and down along the drive shaft 18 to change the aforementioned distance H. Furthermore, the lower tool holder 22 is connected to the drive shaft 18, and the motor 17 can drive the lower tool holder 22 and the second cutter disc 220 to rotate via the drive shaft 18.

[0036] The lower end of the bushing 24 is provided with an open keyway 240, and a lever 181 is provided on the drive shaft 18. The lower end of the bushing 24 passes through the first bearing 16, allowing the lever 181 to pass through the open keyway 240. The lower end of the open keyway 240 penetrates the lower end face of the bushing 24, so that when the lower tool holder 22 is assembled on the drive shaft 18, the lever 181 can be inserted into the open keyway 240, and the engagement of the lever 181 with the open keyway 240 can cause the drive shaft 18 to drive the bushing 24 and the lower tool holder 22 to rotate. Furthermore, the open keyway 240 is opened in the vertical direction, allowing the lever 181 and the bushing 24 to be phase-displaced in the vertical direction without disrupting the aforementioned transmission relationship. That is, when the lower tool holder 22 moves up and down to adjust the distance H, the lever 181 is always inserted into the open keyway 240 of the bushing 24.

[0037] The reset assembly includes a locking head 25, a pressure cap 26, and a reset spring 27. The locking head 25 fixes the pressure cap 26 to the upper end of the drive shaft 18. The reset spring 27 is sleeved on the drive shaft 18, with its upper end touching the pressure cap 26 and its lower end touching the bushing 24. The lifting sleeve 11 is connected to the lower tool holder 22 via the first bearing 16, which allows the lifting sleeve 11 to move upward. However, when the lifting sleeve 11 is adjusted downward, it cannot move the lower tool holder 22. Of course, the lower tool holder 22 can also move downward automatically under the action of gravity or the grinding pressure of the grinding chamber.

[0038] Furthermore, the locking head 25 is used to vertically limit the bushing 24 and the lower tool holder 22 on the transmission shaft 18 to complete the assembly. A pressure cap 26 and a return spring 27 are provided between the locking head 25 and the bushing 24. The return spring 27 can provide a pressure so that the lower tool holder 22 always tends to move towards the lifting sleeve 11 and makes contact with the first bearing 16 on it, ensuring the stability of the lower tool holder and the balance of the second tool holder 220.

[0039] 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 disc adjustment structure, comprising a main unit (1), wherein the main unit (1) is provided with a base (2) and an adjustment assembly, wherein the base (2) is provided with an upper cutter holder (21) and a lower cutter holder (22), the upper cutter holder (21) being fixedly connected to the base (2), and the lower cutter holder (22) being disposed below the upper cutter holder (21); characterized in that, The adjustment assembly includes a lifting sleeve (11) and a screw seat (12). The bottom of the base (2) is provided with a through hole (23). The lifting sleeve (11) passes through the through hole (23) and is connected to the lower knife seat (22). The screw seat (12) is threadedly connected to the lifting sleeve (11), and the main unit (1) is provided with an adjusting seat (13), which is rotatably connected to the screw seat (12) and the adjusting seat (13).

2. The grinding disc adjustment structure according to claim 1, characterized in that, The adjustment assembly also includes an adjustment rod (14), a bevel gear (120) at the lower end of the screw seat (12), the adjustment rod (14) is rotatably connected to the adjustment seat (13), a bevel gear (140) is provided at the first end of the adjustment rod (14), the bevel gear (140) is meshed with the bevel gear (120), and a knob (141) is provided at the second end of the adjustment rod (14).

3. The grinding disc adjustment structure according to claim 1, characterized in that, The upper tool holder (21) is provided with a first tool disc (210), which is fixedly connected to the base (2) through the upper tool holder (21); the lower tool holder (22) is provided with a second tool disc (220), which is fixedly connected to the lower tool holder (22); the lifting sleeve (11) can drive the lower tool holder (22) to move up and down, thereby changing the distance H between the first tool disc (210) and the second tool disc (220).

4. The grinding disc adjustment structure according to claim 3, characterized in that, A grinding chamber is formed between the first cutter head (210) and the second cutter head (220). The upper cutter holder (21) is provided with a feed port (211) and also includes a hopper (15). The hopper (15) is paired with the upper cutter holder (21) and thus communicates with the grinding chamber through the feed port (211).

5. The grinding disc adjustment structure according to claim 1, characterized in that, The upper end of the lifting sleeve (11) is provided with a first bearing (16), and the lifting sleeve (11) is rotatably connected to the lower tool holder (22) through the first bearing (16).

6. The grinding disc adjustment structure according to claim 1, characterized in that, The main unit (1) is equipped with a motor (17), and the motor (17) is equipped with a transmission shaft (18). The lower end of the transmission shaft (18) is rotatably connected to the adjusting seat (13) through a second bearing (180). The lower tool holder (22) is equipped with a bushing (24). The transmission shaft (18) is movably inserted through the bushing (24). A reset component is provided between the upper end of the transmission shaft (18) and the bushing (24). The transmission shaft (18) and the bushing (24) are connected by transmission.

7. The grinding disc adjustment structure according to claim 6, characterized in that, The lower end of the bushing (24) is provided with an open keyway (240), and the drive shaft (18) is provided with a lever (181). The lower end of the bushing (24) passes through the first bearing (16) so that the lever (181) passes through the open keyway (240).

8. The grinding disc adjustment structure according to claim 6, characterized in that, The reset assembly includes a locking head (25), a pressure cap (26), and a reset spring (27). The locking head (25) fixes the pressure cap (26) to the upper end of the drive shaft (18). The reset spring (27) is sleeved on the drive shaft (18). The upper end of the reset spring (27) touches the pressure cap (26), and the lower end of the reset spring (27) touches the bushing (24).

Images