Grinding core for coffee grinding and clamping device thereof
By designing multi-stage grinding components and clamping devices, the problems of poor grinding effects and inconvenient grinding core removal in existing coffee grinding machines are solved, and more delicate coffee powder and convenient grinding core operation are achieved.
Patent Information
- Application Number
- CN202420580774.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-22
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-03-22
AI Technical Summary
In existing coffee grinders, the spacing between the outer grinding core and the inner grinding core is too large or too small, resulting in the inadequate grinding of the coffee powder and the inconvenient grinding of the grinding core.
A grinding core for coffee grinding is designed, including a first grinding assembly and a second grinding assembly, and a multi-stage crushing and grinding of the coffee beans through a rotating seat is driven to drive the grinding blade, and a clamping device is provided to facilitate the grinding core.
It improves the delicateness and grinding effect of coffee powder, facilitates the grinding of coffee beans, and simplifies the installation and disassembly of the grinding core through a special clamping device.
Smart Images
Figure CN222171973U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of grinding technology, and in particular to a grinding core for coffee grinding and a clamping device thereof. Background Art
[0002] Coffee is a beverage made from roasted and ground coffee beans. Coffee beans are generally ground into coffee powder by a grinder. There is currently a hand-cranked grinder, which includes a grinder barrel and a grinding core. The grinding core is placed inside the grinder barrel, and the grinding core includes an outer grinding core and an inner grinding core. The outer grinding core is fixedly installed inside the grinder barrel, and the inner grinding core is placed inside the outer grinding core, and the inner grinding core can rotate. The outer grinding core and the inner grinding core are both equipped with grinding blades on the side close to each other.
[0003] When the coffee beans need to be ground, the coffee beans are placed between the outer grinding core and the inner grinding core, and then the inner grinding core is rotated, and the coffee beans are ground by the grinding blades on the outer grinding core and the inner grinding core. When the distance between two adjacent grinding blades on the existing outer grinding core and the inner grinding core is too large, the coffee powder is not ground finely, and when the distance between two adjacent grinding blades is too small, it is difficult to crush the coffee powder, and thus, there is a defect of poor coffee grinding effect. At the same time, when the staff takes the grinding core, the grinding blade on the grinding core affects the staff to take the grinding core, and there is a defect of inconvenience in taking the grinding core. Utility Model Content
[0004] In order to improve the effect of grinding coffee beans, the present application provides a grinding core for coffee grinding and a clamping device thereof.
[0005] The coffee grinding core provided in the present application adopts the following technical solution:
[0006] A grinding core for coffee grinding, the grinding core is used in a hand-cranked bean grinder, the hand-cranked bean grinder comprises a bean grinding cylinder and a grinding core installed inside the bean grinding cylinder, the grinding core comprises:
[0007] A first grinding assembly, the first grinding assembly comprising a positioning portion mounted on the inner wall of the bean grinding cylinder and a first grinding portion mounted on the positioning portion, the positioning portion being arranged in an annular shape, the first grinding portion comprising a first upper grinding piece mounted above the inner wall of the positioning portion and a first lower grinding piece mounted below the inner wall of the positioning portion;
[0008] A second grinding assembly, the second grinding assembly comprises a rotating seat located in the middle of the positioning portion and a second grinding portion mounted on the rotating seat, the rotating seat can rotate, the second grinding portion comprises a second upper grinding piece mounted above the outer circumference of the rotating seat and a second lower grinding piece mounted below the outer circumference of the rotating seat, the first upper grinding piece corresponds to the second upper grinding piece, and the first lower grinding piece corresponds to the second lower grinding piece;
[0009] When grinding coffee, the coffee beans are placed inside the first grinding assembly and the second grinding assembly, and the rotating seat is rotated, the rotating seat drives the second upper grinding piece and the second lower grinding piece to rotate, the first upper grinding piece and the second upper grinding piece cooperate with each other to perform preliminary crushing and grinding of the coffee beans, and the preliminary crushed coffee beans fall between the first lower grinding piece and the second lower grinding piece under the action of gravity, and the crushed coffee beans are further ground by the cooperation of the first lower grinding piece and the second lower grinding piece.
[0010] Optionally, a plurality of positioning grooves are provided on the outer ring wall of the positioning portion, the plurality of positioning grooves are circumferentially distributed along the axial direction of the positioning portion, and each of the positioning grooves passes through the top of the positioning portion.
[0011] Optionally, the first upper grinding member includes a plurality of first upper grinding blades distributed circumferentially along the axial direction of the positioning portion, the first lower grinding blade includes a plurality of first lower grinding blades distributed circumferentially along the axial direction of the positioning portion, and the spacing between two adjacent first lower grinding blades is smaller than the spacing between two adjacent first upper grinding blades.
[0012] Optionally, an arc surface is provided between two adjacent first upper grinding edges, the arc center of the arc surface is located on a side of the arc surface close to the rotating seat, and the lower side of the arc surface is inclined toward a direction close to the rotating seat.
[0013] Optionally, the rotating seat is in a truncated cone shape, and the top diameter of the rotating seat is smaller than the bottom diameter of the rotating seat. A limiting groove is provided at the bottom of the rotating seat, and a connecting hole is provided at the top of the inner wall of the limiting groove, and the connecting hole passes through the top of the rotating seat.
[0014] A device for clamping a grinding core for coffee grinding, the device for clamping a grinding core for coffee grinding comprising:
[0015] A mounting seat, the mounting seat comprising a mounting tube, a plurality of first sliding holes are opened in the circumferential direction of the mounting tube axis direction on the upper side wall of the mounting tube, and a plurality of second sliding holes are opened in the circumferential direction of the mounting tube axis direction on the lower side wall of the mounting tube;
[0016] A supporting unit, wherein the supporting unit is provided with a plurality of supporting units, the plurality of supporting units correspond to the plurality of second sliding holes, and the supporting unit and the corresponding second sliding holes are slidably matched;
[0017] The driving unit includes an extending portion for sliding the supporting unit in a direction away from the mounting tube and a contracting portion for sliding the supporting unit in a direction close to the mounting tube.
[0018] Optionally, the extending portion includes a sliding column slidably mounted inside the mounting cylinder and a pressing piece slidably matched with the first sliding hole, one end of the sliding column has a plurality of first guide grooves circumferentially distributed along the axial direction of the sliding column, the other end of the sliding column has a plurality of second guide grooves circumferentially distributed along the axial direction of the sliding column, the length directions of the first guide groove and the second guide groove both intersect with the axial direction of the sliding column, and the first guide groove and the second guide groove both incline toward adjacent ends of the sliding column, the pressing piece slidably matches with the adjacent first guide groove, and the supporting unit slidably matches with the adjacent second guide groove.
[0019] Optionally, the pressing member includes a pressing block that slides through the first sliding hole and a pressing plate mounted on the pressing block.
[0020] Optionally, the pressing plate is arranged in an arc surface, and the arc center of the arc surface is located at an end of the pressing plate away from the mounting tube.
[0021] Optionally, the contraction portion includes a sliding plate slidably installed inside the mounting tube and a spring installed inside the mounting tube, the sliding plate abuts against the bottom of the sliding column, one end of the spring abuts against the end of the mounting tube, and the other end of the spring abuts against a side of the sliding plate away from the sliding column.
[0022] In summary, the present application includes at least one of the following beneficial technical effects:
[0023] 1. When grinding coffee, place the coffee beans between the first grinding assembly and the second grinding assembly, and then rotate the rotating seat. When the rotating seat rotates, the first upper grinding blade and the second upper grinding blade preliminarily crush the coffee beans, and the first lower grinding blade cooperates with the second lower grinding blade to further crush the coffee beans. The coffee beans are crushed and the fineness of the coffee powder is improved by the graded crushing and grinding method, so as to improve the convenience of grinding coffee and the grinding effect of coffee;
[0024] 2. The staff uses the pressure plate to make the pressing block slide inside the first sliding hole, so that the pressing block squeezes the inner wall of the first guide groove, so as to move the sliding column inside the installation tube. During the movement of the sliding column, the sliding column compresses the spring through the sliding plate, and the inner wall of the second guide groove pushes the support unit to extend out of the second sliding hole. When the support unit needs to be retracted, release the pressure plate, and the spring pushes the sliding column to reset through the sliding plate, so as to retract the support unit through the second guide groove. When it is necessary to take the second grinding component, place the installation tube inside the connecting hole, and then the staff squeezes the pressure plate to extend the support unit, and makes the top of the support unit contact with the top of the inner wall of the limiting groove, so as to facilitate the removal of the second grinding component. When it is necessary to place the second grinding component, release the pressure plate and pull the installation tube out of the connecting hole; BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.
[0026] Figure 2 It is a schematic diagram of the structure of the first grinding assembly in Example 1 of the present application.
[0027] Figure 3 It is a schematic diagram of the structure of the second grinding assembly in Example 1 of the present application.
[0028] Figure 4 It is a schematic diagram of the overall structure of Example 2 of the present application.
[0029] Figure 5 It is a schematic diagram showing the positional relationship between the support unit and the drive unit in Example 2 of the present application.
[0030] Description of reference numerals:
[0031] 1. first grinding assembly; 11. positioning portion; 111. positioning groove; 12. first grinding portion; 121. first upper grinding piece; 122. first lower grinding piece; 2. second grinding assembly; 21. rotating seat; 211. connecting hole; 22. second grinding portion; 221. second upper grinding piece; 222. second lower grinding piece; 3. mounting seat; 31. mounting cylinder; 311. first sliding hole; 312. second sliding hole; 32. mounting cap; 321. mounting block; 322. mounting hole; 4. supporting unit; 5. driving unit; 51. extension portion; 511. sliding column; 5111. first guide groove; 5112. second guide groove; 512. pressing piece; 5121. pressing block; 5122. pressing plate; 52. contraction portion; 521. sliding plate; 522. spring; 523. guide rod. DETAILED DESCRIPTION
[0032] The following is combined with Figure 1-Figure 5 This application is described in further detail.
[0033] Example 1
[0034] Reference Figure 1-Figure 3 A coffee grinding core comprises a first grinding assembly 1 and a second grinding assembly 2. The first grinding assembly 1 is installed inside a bean grinding cylinder, and the second grinding assembly 2 is located in the middle of the first grinding assembly 1. A certain gap is left between the first grinding assembly 1 and the second grinding assembly 2, and the second grinding assembly 2 can rotate.
[0035] Reference Figure 1-Figure 3 When grinding coffee, the coffee beans are placed between the first grinding component 1 and the second grinding component 2, and the second grinding component 2 is rotated. The first grinding component 1 and the second grinding component 2 cooperate with each other to perform multi-stage crushing and grinding on the coffee beans, so as to improve the grinding effect of the coffee.
[0036] Reference Figure 1-Figure 3 The first grinding assembly 1 includes a positioning portion 11 and a first grinding portion 12. The positioning portion 11 is a positioning ring, the axis of the positioning ring is consistent with the axis of the bean grinding cylinder, and a plurality of positioning grooves 111 are provided on the outer wall of the positioning ring. The plurality of positioning grooves 111 are distributed circumferentially along the axis of the positioning ring. In the embodiment of the present application, three positioning grooves 111 are provided. Each positioning groove 111 runs through the top of the positioning ring. The bean grinding cylinder positions the positioning ring through the positioning grooves 111 on the positioning ring, thereby reducing the possibility of the positioning ring rotating inside the bean grinding cylinder.
[0037] Reference Figure 1-Figure 3 The first grinding part 12 includes a first upper grinding piece 121 and a first lower grinding piece 122. The first upper grinding piece 121 and the first lower grinding piece 122 are both mounted on the inner wall of the positioning ring, and the first upper grinding piece 121 is located above the first lower grinding piece 122.
[0038] Reference Figure 1-Figure 3 The first upper grinding member 121 includes a plurality of first upper grinding blades, which are evenly distributed along the axis direction of the positioning ring. In order to facilitate the movement of coffee beans between the first upper grinding blades, an arc surface is provided between two adjacent first upper grinding blades. In order to facilitate the movement of coffee beans toward the middle position in the axis direction of the positioning ring, the lower parts of the arc surfaces on the two adjacent first upper grinding blades are inclined toward the axis direction of the positioning ring.
[0039] Reference Figure 1-Figure 3 The first lower grinding member 122 includes a plurality of first lower grinding blades, which are evenly distributed along the axis of the positioning ring, and the spacing between two adjacent first lower grinding blades is smaller than the spacing between two adjacent first upper grinding blades. The first upper grinding blade and the first lower grinding blade are integrally formed with the positioning ring.
[0040] Reference Figure 1-Figure 3 , the second grinding assembly 2 is located in the middle of the positioning ring, and the second grinding assembly 2 includes a rotating seat 21 and a second grinding portion 22. The top of the rotating seat 21 is higher than the top of the positioning ring, the rotating seat 21 is arranged in a truncated cone, and the top diameter of the rotating seat 21 is smaller than the bottom diameter of the rotating seat 21, and the rotating seat 21 can rotate. A limiting groove is provided at the bottom of the rotating seat 21, and a connecting hole 211 is provided at the top of the inner wall of the limiting groove along the direction of the rotation axis of the rotating seat 21. The connecting hole 211 passes through the top of the rotating seat 21. In the embodiment of the present application, the connecting hole 211 is a circular hole.
[0041] Reference Figure 1-Figure 3 The second grinding part 22 is installed on the outer circumference of the rotating seat 21, and the second grinding part 22 includes a second upper grinding piece 221 and a second lower grinding piece 222, and the second upper grinding piece 221 is located above the second lower grinding piece 222. The first upper grinding piece 121 corresponds to the second upper grinding piece 221, and the first lower grinding piece 122 corresponds to the second lower grinding piece 222.
[0042] Reference Figure 1-Figure 3 The second upper grinding member 221 includes a plurality of second upper grinding blades, which are evenly distributed along the axial direction of the rotating seat 21. The second lower grinding member 222 includes a plurality of second lower grinding blades, which are evenly distributed along the axial direction of the rotating seat 21. An arc surface is provided between two adjacent second upper grinding blades, and the arc center of the arc surface is located in the direction of the arc surface away from the axis of the positioning ring. The spacing between two adjacent second upper grinding blades is greater than the spacing between two adjacent second lower grinding blades. The second upper grinding blade and the second lower grinding blade are both integrally formed with the rotating seat 21
[0043] The implementation principle of a grinding core for coffee grinding in Example 1 of the present application is: when grinding coffee, the coffee beans are placed between the first grinding component 1 and the second grinding component 2, and then the rotating seat 21 is rotated. When the rotating seat 21 rotates, the first upper grinding blade and the second upper grinding blade perform preliminary crushing on the coffee beans, and the first lower grinding blade cooperates with the second lower grinding blade to further crush the coffee beans, so as to improve the convenience of grinding coffee and the grinding effect of coffee.
[0044] Example 2
[0045] The present application also provides a device for clamping a grinding core for grinding coffee.
[0046] Reference Figure 4-Figure 5 A coffee grinding core clamping device comprises a mounting seat 3, a supporting unit 4 and a driving unit 5. The supporting unit 4 and the driving unit 5 are both mounted on the mounting seat 3, and the driving unit 5 is used to provide power for the support unit 4 to work.
[0047] Reference Figure 4-Figure 5 The mounting seat 3 includes a mounting tube 31 and a mounting cap 32. One end of the mounting tube 31 is closed, and the other end of the mounting tube 31 is opened, and a first sliding hole 311 and a second sliding hole 312 are opened on the side wall of the mounting tube 31. The first sliding hole 311 and the second sliding hole 312 are respectively located at the two ends of the mounting tube 31, and the first sliding hole 311 is located at the opening close to the end of the mounting tube 31.
[0048] Reference Figure 4-Figure 5 The first sliding holes 311 and the second sliding holes 312 are both provided with a plurality of them, and the plurality of first sliding holes 311 and the plurality of second sliding holes 312 are uniformly distributed along the axial direction of the mounting tube 31. In the embodiment of the present application, the first sliding holes 311 and the second sliding holes are both provided with two.
[0049] Reference Figure 4-Figure 5 The mounting cap 32 is mounted at the opening of the end of the mounting tube 31. The mounting cap 32 is cylindrical, and one end of the mounting cap 32 is closed, and the other end of the mounting cap 32 is provided with an opening. The opening of the mounting cap 32 is threadedly connected with the opening of the mounting tube 31. A mounting block 321 is bonded to the mounting cap 32, and a mounting hole 322 is provided on the mounting block 321 for easy threading, so as to facilitate carrying the entire clamping device.
[0050] Reference Figure 4-Figure 5 There are two support units 4 , and the two support units 4 correspond to the two second sliding holes 312 one by one. In the embodiment of the present application, the support unit 4 is a support bar, and the support bar and the corresponding second sliding hole 312 are slidably matched.
[0051] Reference Figure 4-Figure 5 The driving unit 5 includes an extending portion 51 and a contracting portion 52. The extending portion 51 includes a sliding column 511 and a pressing member 512. The sliding column 511 is slidably mounted inside the mounting tube 31, and one end of the sliding column 511 is provided with a plurality of first guide grooves 5111, and the other end of the sliding column 511 is provided with a plurality of second guide grooves 5112.
[0052] Reference Figure 4-Figure 5 The plurality of first guide grooves 5111 and the plurality of second guide grooves 5112 are circumferentially distributed along the axis direction of the sliding column 511. In the embodiment of the present application, two first guide grooves 5111 and two second guide grooves 5112 are provided.
[0053] Reference Figure 4-Figure 5The length direction of each first guide groove 5111 and each second guide groove 5112 intersects with the axial direction of the sliding column 511, and the first guide groove 5111 and the second guide groove 5112 are inclined toward the end of the adjacent sliding column 511. The two support units 4 correspond to the two second guide grooves 5112 one by one, and the support units 4 and the corresponding second guide grooves 5112 are slidably matched.
[0054] Reference Figure 4-Figure 5 There are two pressing members 512, and the two pressing members 512 correspond to the two first sliding holes 311 one by one. The pressing member 512 includes a pressing block 5121 and a pressing plate 5122. The pressing block 5121 and the corresponding first sliding hole 311 are slidably matched, and the pressing block 5121 and the first guide groove 5111 are slidably matched. The pressing plate 5122 is fixedly mounted on the side of the pressing block 5121 away from the mounting tube 31, and the pressing plate 5122 is an arc-shaped plate, and the arc center of the pressing plate 5122 is located on the side away from the mounting tube 31. The arc center of the pressing plate 5122 is convenient for the staff to press, and at the same time, the arc-shaped pressing plate 5122 is convenient for limiting the fingers of the staff.
[0055] Reference Figure 4-Figure 5 The contraction portion 52 includes a guide rod 523, a sliding plate 521, and a spring 522. The guide rod 523 is located inside the mounting tube 31, and the guide rod 523 and the sliding column 511 are coaxial. One end of the guide rod 523 is fixedly connected to the closed section of the mounting tube 31. In the embodiment of the present application, the guide rod 523 is a round rod, and the guide rod 523 slides through the sliding column 511.
[0056] Reference Figure 4-Figure 5 The sliding plate 521 is located inside the mounting tube 31, and the sliding plate 521 is coaxial with the guide rod 523. The guide rod 523 slides through the sliding plate 521. One side of the sliding plate 521 abuts against the bottom end of the sliding column 511. The spring 522 is sleeved on the outer periphery of the guide rod 523. One end of the spring 522 abuts against the sealing end of the mounting tube 31, and the other end of the spring 522 abuts against one end of the sliding plate 521 away from the sliding column 511.
[0057] The implementation principle of Example 2 is as follows: the staff uses the pressing plate 5122 to move the pressing block 5121 inside the first sliding hole 311, and makes the pressing block 5121 squeeze the inner wall of the first guide groove 5111, so that the sliding column 511 moves inside the installation tube 31, so that the sliding column 511 compresses the spring 522 through the sliding plate 521, and makes the inner wall of the second guide groove 5112 push the support bar to extend out of the second sliding hole 312. When it is necessary to shrink the support bar, release the pressing plate 5122, and the spring 522 pushes the sliding column 511 to reset through the sliding plate 521, so that the support bar shrinks through the second guide groove 5112. When it is necessary to take the second grinding component 2, place the installation tube 31 inside the connecting hole 211, and then, the staff squeezes the pressing plate 5122 to make the support bar retract and contract, and make the top of the support bar contact the top of the inner wall of the limiting groove, so as to facilitate the taking of the second grinding component 2. When it is necessary to place the second grinding component 2, release the pressing plate 5122.
[0058] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A grinding core for coffee grinding, the grinding core being used in a hand-cranked bean grinder, the hand-cranked bean grinder comprising a bean grinding cylinder and a grinding core installed inside the bean grinding cylinder, characterized in that: The grinding core comprises: A first grinding assembly (1), the first grinding assembly (1) comprising a positioning portion (11) mounted on the inner wall of the bean grinding cylinder and a first grinding portion (12) mounted on the positioning portion (11), the positioning portion (11) being arranged in an annular shape, the first grinding portion (12) comprising a first upper grinding piece (121) mounted above the inner wall of the positioning portion (11) and a first lower grinding piece (122) mounted below the inner wall of the positioning portion (11); a second grinding assembly (2), the second grinding assembly (2) comprising a rotating seat (21) located at a middle position of the positioning portion (11) and a second grinding portion (22) mounted on the rotating seat (21), the rotating seat (21) being rotatable, the second grinding portion (22) comprising a second upper grinding piece (221) mounted above the outer circumference of the rotating seat (21) and a second lower grinding piece (222) mounted below the outer circumference of the rotating seat (21), the first upper grinding piece (121) and the second upper grinding piece (221) corresponding to each other, and the first lower grinding piece (122) and the second lower grinding piece (222) corresponding to each other; When grinding coffee, the coffee beans are placed inside the first grinding component (1) and the second grinding component (2), and the rotating seat (21) is rotated. The rotating seat (21) drives the second upper grinding piece (221) and the second lower grinding piece (222) to rotate. The first upper grinding piece (121) and the second upper grinding piece (221) cooperate with each other to perform preliminary crushing and grinding of the coffee beans. The coffee beans after preliminary crushing fall between the first lower grinding piece (122) and the second lower grinding piece (222) under the action of gravity. The crushed coffee beans are further ground by the cooperation of the first lower grinding piece (122) and the second lower grinding piece (222).
2. The coffee grinding core according to claim 1, characterized in that: A plurality of positioning grooves (111) are provided on the outer wall of the positioning portion (11), the plurality of positioning grooves (111) are circumferentially distributed along the axial direction of the positioning portion (11), and each positioning groove (111) passes through the top of the positioning portion (11).
3. The coffee grinding core according to claim 1, characterized in that: The first upper grinding member (121) comprises a plurality of first upper grinding edges distributed circumferentially along the axial direction of the positioning portion (11); the first lower grinding member (122) comprises a plurality of first lower grinding edges distributed circumferentially along the axial direction of the positioning portion (11); and the spacing between two adjacent first lower grinding edges is smaller than the spacing between two adjacent first upper grinding edges.
4. The coffee grinding core according to claim 3, characterized in that: An arc surface is provided between two adjacent first upper grinding edges, the arc center of the arc surface is located on a side of the arc surface close to the rotating seat (21), and the lower side of the arc surface is inclined towards the rotating seat (21).
5. The coffee grinding core according to claim 1, characterized in that: The rotating seat (21) is in a truncated cone shape, and the top diameter of the rotating seat (21) is smaller than the bottom diameter of the rotating seat (21). A limiting groove is provided at the bottom of the rotating seat (21), and a connecting hole (211) is provided at the top of the inner wall of the limiting groove. The connecting hole (211) passes through the top of the rotating seat (21).
6. A clamping device for a coffee grinding core, the clamping device being used to clamp a coffee grinding core according to any one of claims 1 to 5, characterized in that: include; A mounting seat (3), the mounting seat (3) comprising a mounting tube (31), a plurality of first sliding holes (311) being opened circumferentially along the axial direction of the mounting tube (31) at the top of the side wall of the mounting tube (31), and a plurality of second sliding holes (312) being opened circumferentially along the axial direction of the mounting tube (31) at the bottom of the side wall of the mounting tube (31); A support unit (4), wherein the support unit (4) is provided with a plurality of the support units (4), the plurality of the support units (4) and the plurality of the second sliding holes (312) correspond to each other, and the support unit (4) and the corresponding second sliding holes (312) are slidably matched; A driving unit (5), comprising an extension portion (51) for causing the support unit (4) to slide in a direction away from the mounting tube (31) and a contraction portion (52) for causing the support unit (4) to slide in a direction close to the mounting tube (31).
7. The device for clamping a coffee grinding core according to claim 6, characterized in that: The extending portion (51) comprises a sliding column (511) slidably mounted inside the mounting tube (31) and a pressing member (512) slidably matched with the first sliding hole (311); one end of the sliding column (511) is provided with a plurality of first guide grooves (5111) circumferentially distributed along the axial direction of the sliding column (511); the other end of the sliding column (511) is provided with a plurality of second guide grooves (5112) circumferentially distributed along the axial direction of the sliding column (511); the length directions of the first guide groove (5111) and the second guide groove (5112) are both intersected with the axial direction of the sliding column (511); and the first guide groove (5111) and the second guide groove (5112) are both inclined toward the adjacent end of the sliding column (511); the pressing member (512) is slidably matched with the adjacent first guide groove (5111); and the supporting unit (4) is slidably matched with the adjacent second guide groove (5112).
8. The device for clamping a grinding core for coffee grinding according to claim 7, characterized in that: The pressing member (512) comprises a pressing block (5121) that slides through the first sliding hole (311) and a pressing plate (5122) mounted on the pressing block (5121).
9. The device for clamping a grinding core for coffee grinding according to claim 8, characterized in that: The pressing plate (5122) is arranged in the form of an arc surface, and the arc center of the arc surface is located at an end of the pressing plate (5122) away from the mounting tube (31).
10. The device for clamping a grinding core for coffee grinding according to claim 7, characterized in that: The contraction portion (52) includes a sliding plate (521) slidably mounted inside the mounting tube (31) and a spring (522) mounted inside the mounting tube (31); the sliding plate (521) abuts against the bottom of the sliding column (511); one end of the spring (522) abuts against the end of the mounting tube (31); and the other end of the spring (522) abuts against a side of the sliding plate (521) away from the sliding column (511).