Building material grinding equipment

Abstract

The invention discloses building material grinding equipment which comprises a rack, a lifting frame, a fixing mechanism, a grinding mechanism and a lifting mechanism, the lifting frame is arranged on the rack in a lifting mode through the lifting mechanism, the grinding mechanism is vertically and rotatably arranged on the lifting frame, and the fixing mechanism is arranged under the grinding mechanism; wherein the grinding mechanism comprises a first rotary driving motor, a driving rod, a first grinding circular ring, a second grinding circular ring and a twisting assembly, the first driving motor is arranged on the lifting frame, and an output shaft of the first driving motor is coaxially provided with the driving rod. According to the equipment, the defects that equipment for grinding the inner wall of the annular thin-wall cylinder building material is lacked in the current market, the inner wall of the annular thin-wall cylinder building material can only be ground by selecting a small grinding wheel, and the grinding efficiency and effect of the type of building material are reduced are overcome. Therefore, the building material grinding equipment can grind the inner wall of the annular thin-wall cylinder building material.

Description

Technical Field

[0001] The invention relates to the technical field of grinding, and in particular to a building material grinding device. Background Art

[0002] Aluminum plate refers to a rectangular plate made by rolling aluminum ingots, which is divided into pure aluminum plate, alloy aluminum plate, etc. Aluminum plate is mainly used as a decorative plate in the field of life. The existing cleaning of aluminum plate mainly adopts manual grinding with grinding wheel or sandpaper to make the surface of aluminum plate smooth and flat. When grinding multi-cavity thin-walled aluminum profiles, special attention should be paid to clamping. Multi-cavity thin-walled aluminum profiles are easy to deform. Special attention should be paid during grinding. It should not be too tight or too loose when clamping; and thin-walled aluminum profile workpieces with multiple cavities, if the processing of multiple cavities is in order, one by one, it will cause uneven force on the workpiece and deformation.

[0003] Currently, there is a lack of equipment on the market for grinding the inner wall of annular thin-walled cylindrical building materials. The inner wall of annular thin-walled cylindrical building materials can only be ground by selecting a smaller grinding wheel, which reduces the efficiency and effect of grinding this type of building materials.

[0004] Therefore, providing a building material grinding device capable of grinding the inner wall of annular thin-walled cylindrical building materials is an urgent problem to be solved by the present invention. Summary of the invention

[0005] In view of the above technical problems, the purpose of the present invention is to overcome the lack of equipment for grinding the inner wall of annular thin-walled cylindrical building materials in the current market, and the inner wall of annular thin-walled cylindrical building materials can only be ground by selecting a smaller grinding wheel, which reduces the efficiency and effect of grinding this type of building materials. Thus, a building material grinding equipment capable of grinding the inner wall of annular thin-walled cylindrical building materials is provided.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a building material grinding equipment, which includes: a frame, a lifting frame, a fixing mechanism, a grinding mechanism and a lifting mechanism, wherein the lifting frame can be lifted and lowered on the frame through the lifting mechanism, the grinding mechanism is vertically rotatably arranged on the lifting frame, and the fixing mechanism is arranged directly below the grinding mechanism; wherein the grinding mechanism includes: a first rotary drive motor, a drive rod, a first frosting ring, a second frosting ring and a torsion assembly, wherein the first drive motor is arranged on the lifting frame, and its output shaft is coaxially provided with a drive rod, the drive rod body is coaxially provided with a first frosting ring and a second frosting ring at intervals, and the torsion assembly is arranged on the drive rod, and can drive the first frosting ring and the second frosting ring to twist back and forth.

[0007] Preferably, the torsion assembly includes: a limited movable link, a first hinge link, a first linear drive motor and a second linear drive motor, limited position frames are respectively arranged on opposite sides of the lower end of the drive rod, each limited movable link is movably arranged on the limit frame, and one end of the limited movable link is hinged to the inner side of the first frosted ring, the opposite sides of the upper surface of the first frosted ring are respectively hinged to one end of the hinge link, the other end of the hinge link is hinged to the lower surface of the second frosted ring, the first linear drive motor is respectively arranged on opposite sides of the drive rod, the output end of the first linear drive motor is hinged to the inner side of the second frosted ring, and the other end of the hinge link is hinged to the lower surface of the second frosted ring, the first linear drive motor is respectively arranged on opposite sides of the drive rod, the output end of the first linear drive motor is hinged to the inner side of the second frosted ring, and the other end of the hinge link is hinged to the rod body of the drive rod, the drive rod is located above the first linear drive motor, and the second linear drive motor is respectively arranged on opposite sides, the output end of the second linear drive motor is hinged to the first linear drive motor, and the other end of the second linear drive motor is hinged to the part of the rod body of the drive rod located above the first linear drive motor.

[0008] Preferably, a first clamping column is provided on the limiting frame, and a strip groove matched with the first clamping column is provided on the limiting movable connecting rod.

[0009] Preferably, the fixing mechanism includes: a fixing block, a driving ring block and a first driving component, an annular groove is arranged on the frame directly below the grinding mechanism, a plurality of fixing blocks are arranged around the inner circumference of the annular groove, each of the fixing blocks can be arranged on the inner side of the annular groove so as to be reciprocatingly movable toward the axial direction of the annular groove, the driving ring block is coaxially and rotatably arranged on the annular groove, and a plurality of driving grooves are penetrated on its upper surface, a second clamping column adapted to the driving groove is vertically arranged on the fixing block, and the first driving component is arranged on one side of the driving ring block so as to drive the driving ring block to rotate.

[0010] Preferably, the first driving component is a third linear driving motor, one end of the third linear driving motor is hinged to the driving ring block, and the other end is hinged to the frame.

[0011] Preferably, limited lifting slide grooves are vertically arranged on opposite sides of the frame, and the lifting frame is U-shaped, and its opposite ends are respectively matched with the limited lifting slide grooves.

[0012] Preferably, the lifting mechanism comprises: a gear and a second driving assembly, a rack is vertically arranged on one side of the lifting frame, a gear meshing with the rack is rotatably arranged on one side of the rack, and the second driving assembly is arranged on one side of the gear to drive it to rotate.

[0013] Preferably, the second driving assembly comprises: a second rotary driving motor, a worm and a worm wheel, the worm wheel is coaxially arranged on one side of the gear, the second rotary driving motor is arranged on one side of the worm wheel, and its output shaft is coaxially arranged with a worm meshing with the worm wheel.

[0014] Preferably, anti-slip grooves are provided on the inner side of the fixing block.

[0015] According to the above technical scheme, the beneficial effect of the present invention compared with the prior art is: the present application fixes the annular thin-walled cylindrical building material under the grinding mechanism through a fixing mechanism, and then starts the lifting mechanism to drive the lifting frame to descend. When the first frosted ring and the second frosted ring are located at the opening of the annular thin-walled cylindrical building material, it continues to descend and starts the twisting assembly to drive the first frosted ring and the second frosted ring to twist back and forth so that they can be inserted into the interior of the annular thin-walled cylindrical building material, and then starts the first rotary drive motor to drive the drive rod to rotate, and at the same time starts the lifting mechanism to drive the drive rod to rise slowly, thereby realizing the grinding of the inside of the annular thin-walled cylindrical building material, avoiding the problem that a suitable grinding wheel cannot be inserted into the interior of the annular thin-walled cylindrical building material, and only a smaller grinding wheel can be used for grinding, thereby improving the grinding effect and efficiency.

[0016] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation mode; and the parts not involved in the present invention are the same as the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a plan view of a building material grinding device provided in a preferred embodiment of the present invention.

[0019] Figure 2 It is a stereoscopic diagram of a building material grinding device provided in a preferred embodiment of the present invention.

[0020] Figure 3 A partial three-dimensional view of a building material grinding device provided in a preferred embodiment of the present invention Figure 1 .

[0021] Figure 4 A partial three-dimensional view of a building material grinding device provided in a preferred embodiment of the present invention Figure 2 .

[0022] Figure 5 A partial three-dimensional view of a building material grinding device provided in a preferred embodiment of the present invention Figure 3 .

[0023] Figure 6 A partial plan view of a building material grinding device provided in a preferred embodiment of the present invention Figure 1 .

[0024] Figure 7 A partial plan view of a building material grinding device provided in a preferred embodiment of the present invention Figure 2 .

[0025] Description of reference numerals: 1-frame; 101-annular groove; 102-limiting lifting slide groove; 2-lifting frame; 201-rack; 3-fixing mechanism; 301-fixing block; 30101-second clamping column; 30102-anti-slip pattern; 302-driving ring block; 30201-driving groove; 303-first driving assembly; 30301-third linear driving motor; 4-grinding mechanism; 401-first rotary driving motor; 402-driving rod; 40201-limiting frame; 4 0202-first clamping column; 403-first frosted ring; 404-second frosted ring; 405-torsion assembly; 40501-limited movable connecting rod; 4050101-strip groove; 40502-hinged connecting rod; 40503-first linear drive motor; 40504-second linear drive motor; 5-lifting mechanism; 501-gear; 502-second drive assembly; 50201-second rotary drive motor; 50202-worm; 50203-worm wheel. DETAILED DESCRIPTION

[0026] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0027] In the description of the embodiments of the present invention, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like are used to indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or are the orientation or positional relationship in which the invented product is usually placed when in use, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, if the terms "first", "second", "third" and the like appear, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In addition, if the terms "horizontal", "vertical", "overhanging" and the like appear, it does not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] Reference Figure 1 , Figure 2 and Figure 5 : A building material grinding equipment, the equipment includes: a frame 1, a lifting frame 2, a fixing mechanism 3, a grinding mechanism 4 and a lifting mechanism 5, the lifting frame 2 is lifted and lowered on the frame 1 through the lifting mechanism 5, the grinding mechanism 4 is vertically rotatably arranged on the lifting frame 2, and the fixing mechanism 3 is arranged directly below the grinding mechanism 4; wherein, the grinding mechanism 4 includes: a first rotary drive motor 401, a drive rod 402, a first frosted ring 403, a second frosted ring 404 and a twisting assembly 405, wherein the first drive motor is arranged on the lifting frame 2, and its output shaft is coaxially provided with the drive rod 402, the drive rod 402 has the first frosted ring 403 and the second frosted ring 404 coaxially and spaced apart on its shaft, and the twisting assembly 405 is arranged on the drive rod 402, and can drive the first frosted ring 403 and the second frosted ring 404 to twist back and forth.

[0031] The present application fixes the annular thin-walled cylindrical building material under the grinding mechanism 4 through the fixing mechanism 3, and then starts the lifting mechanism 5 to drive the lifting frame 2 to descend. When the first frosted ring 403 and the second frosted ring 404 are located at the opening of the annular thin-walled cylindrical building material, it continues to descend and starts the twisting assembly 405 to drive the first frosted ring 403 and the second frosted ring 404 to twist back and forth so that they can be inserted into the interior of the annular thin-walled cylindrical building material. Then, the first rotary drive motor 401 is started to drive the driving rod 402 to rotate, and the lifting mechanism 5 is started at the same time to drive the driving rod 402 to rise slowly, thereby realizing the grinding of the inside of the annular thin-walled cylindrical building material, avoiding the problem that a suitable grinding wheel cannot be inserted into the interior of the annular thin-walled cylindrical building material, and only a smaller grinding wheel can be used for grinding, thereby improving the grinding effect and efficiency.

[0032] Reference Figure 6The torsion assembly 405 includes: a limited movable link 40501, a first hinged link 40502, a first linear drive motor 40503 and a second linear drive motor 40504. The lower end of the drive rod 402 is provided with limited position frames 40201 on opposite sides. Each limited position frame 40201 is movably provided with a limited movable link 40501, and one end of the limited movable link 40501 is hinged to the inner side of the first frosted ring 403. The upper surface of the first frosted ring 403 is hinged to one end of the hinged link 40502 on opposite sides, and the other end of the hinged link 40502 is hinged to the lower surface of the second frosted ring 404. The surface is hinged, and the first linear drive motor 40503 is respectively arranged on the opposite sides of the drive rod 402, the output end of the first linear drive motor 40503 is hinged on the inner side of the second frosted ring 404, and the other end thereof is hinged to the rod body of the drive rod 402, and the drive rod 402 is located above the first linear drive motor 40503 and the second linear drive motor 40504 is respectively arranged on the opposite sides, the output end of the second linear drive motor 40504 is hinged on the first linear drive motor 40503, and the other end thereof is hinged to the part of the rod body of the drive rod 402 located above the first linear drive motor 40503.

[0033] In the present application, the first linear drive motor 40503 and the second linear drive motor 40504 on one side are extended, and the first linear drive motor 40503 and the second linear drive motor 40504 on the other side are contracted, so that the first frosted ring 403 and the second frosted ring 404 are tilted synchronously through the hinged connecting rod 40502 and the limit movable connecting rod 40501, and then the lifting frame 2 is driven down by the lifting mechanism 5 to extend the first frosted ring 403 and the second frosted ring 404 in this state into the annular thin-walled cylinder. The first frosted ring 403 and the second frosted ring 404 are tilted to the other side synchronously through the hinged connecting rod 40502 and the limited movable connecting rod 40501, thereby realizing the reciprocating twisting of the first frosted ring 403 and the second frosted ring 404, so as to be inserted into the interior of the annular thin-walled cylindrical building material.

[0034] Reference Figure 7 : The limiting frame 40201 is provided with a first clamping column 40202, and the limiting movable connecting rod 40501 is provided with a strip groove 4050101 adapted to the first clamping column 40202.

[0035] The present application adopts such a design to ensure that the limiting movable link 40501 can pass through the strip groove 4050101 to be assembled in the first clamping column 40202, thereby preventing the first frosted ring 403 and the second frosted ring 404 from interfering with each other during movement.

[0036] Reference Figure 2 and Figure 3 The fixing mechanism 3 comprises: a fixing block 301, a driving ring block 302 and a first driving assembly 303. An annular groove 101 is arranged on the frame 1 directly below the grinding mechanism 4. A plurality of fixing blocks 301 are arranged around the inner circumference of the annular groove 101. Each fixing block 301 can be arranged on the inner side of the annular groove 101 so as to reciprocate toward the axial direction of the annular groove 101. The driving ring block 302 is coaxially rotatably arranged on the annular groove 101, and a plurality of driving grooves 30201 are penetrated on its upper surface. A second clamping column 30101 adapted to the driving groove 30201 is vertically arranged on the fixing block 301. The first driving assembly 303 is arranged on one side of the driving ring block 302 to drive the driving ring block 302 to rotate.

[0037] The present application places the annular thin-walled cylindrical building material in the annular groove 101, and then starts the first driving component 303 to drive the driving ring block 302 to rotate, so as to drive each fixing block 301 to move back and forth toward the axial direction of the annular groove 101 through the cooperation of the driving groove 30201 and the second clamping column 30101, thereby achieving the fixation of the annular thin-walled cylindrical building material. The first driving component 303 can be a rotating driver and a gear 501, but this rotation method does not have enough fixing force.

[0038] Reference Figure 4 : The first driving component 303 is a third linear driving motor 30301, one end of the third linear driving motor 30301 is hinged on the driving ring block 302, and the other end is hinged on the frame 1.

[0039] The present application starts the third linear drive motor 30301 to extend and retract to drive the drive ring block 302 to rotate. This rotation method has a strong fixing force to prevent the annular thin-walled cylindrical building material from loosening during the grinding process.

[0040] Reference Figure 3 : The frame 1 is vertically provided with limited lifting slots 102 on opposite sides respectively. The lifting frame 2 is U-shaped, and its opposite ends are respectively matched with the limited lifting slots 102.

[0041] The lifting frame 2 of the present application can be inserted into the limiting lifting slide groove 102 to ensure that it can be lifted and lowered stably.

[0042] Reference Figure 2The lifting mechanism 5 includes a gear 501 and a second driving assembly 502. A rack 201 is vertically arranged on one side of the lifting frame 2. A gear 501 meshing with the rack 201 is rotatably arranged on one side of the rack 201. The second driving assembly 502 is arranged on one side of the gear 501 to drive the gear 501 to rotate.

[0043] In the present application, the second driving assembly 502 is started to drive the gear 501 to rotate, thereby driving the lifting frame 2 to move up and down through the rack 201 .

[0044] Reference Figure 3 and Figure 4 The second driving assembly 502 includes: a second rotation driving motor 50201, a worm 50202 and a worm wheel 50203, wherein the worm wheel 50203 is coaxially arranged on one side of the gear 501, the second rotation driving motor 50201 is arranged on one side of the worm wheel 50203, and its output shaft is coaxially arranged with a worm 50202 meshing with the worm wheel 50203.

[0045] In the present application, the second rotary drive motor 50201 is started to drive the worm 50202 to rotate, thereby driving the gear 501 to rotate through the worm wheel 50203 .

[0046] Reference Figure 3 and Figure 4 : Anti-slip grooves 30102 are arranged on the inner side of the fixing block 301.

[0047] The present application further fixes the annular thin-walled cylindrical building material by providing anti-slip grooves 30102 .

[0048] When the device provided by the present invention is in use, the annular thin-walled cylindrical building material is fixed under the grinding mechanism 4 through the fixing mechanism 3, and then the lifting mechanism 5 is started to drive the lifting frame 2 to descend. When the first frosted ring 403 and the second frosted ring 404 are located at the opening of the annular thin-walled cylindrical building material, the lifting frame 2 continues to descend and the twisting assembly 405 is started to drive the first frosted ring 403 and the second frosted ring 404 to twist back and forth so that they can be inserted into the interior of the annular thin-walled cylindrical building material. Then, the first rotary drive motor 401 is started to drive the driving rod 402 to rotate, and at the same time, the lifting mechanism 5 is started to drive the driving rod 402 to rise slowly, thereby realizing the grinding of the inside of the annular thin-walled cylindrical building material, avoiding the problem that a suitable grinding wheel cannot be inserted into the interior of the annular thin-walled cylindrical building material and only a smaller grinding wheel can be used for grinding, thereby improving the grinding effect and efficiency.

[0049] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0050] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0051] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A building material grinding device, characterized in that: The device comprises: a frame (1), a lifting frame (2), a fixing mechanism (3), a grinding mechanism (4) and a lifting mechanism (5); the lifting frame (2) is arranged on the frame (1) in a manner that it can be lifted or lowered by means of the lifting mechanism (5); the grinding mechanism (4) is arranged on the lifting frame (2) in a manner that it can be rotated vertically; and the fixing mechanism (3) is arranged directly below the grinding mechanism (4); wherein: The grinding mechanism (4) comprises: a first rotary drive motor (401), a drive rod (402), a first frosted ring (403), a second frosted ring (404) and a twisting assembly (405); the first drive motor is arranged on the lifting frame (2), and its output shaft is coaxially arranged with the drive rod (402); the drive rod (402) is coaxially arranged with the first frosted ring (403) and the second frosted ring (404) at intervals; the twisting assembly (405) is arranged on the drive rod (402) and can drive the first frosted ring (403) and the second frosted ring (404) to twist back and forth.

2. A building material grinding device according to claim 1, characterized in that: The torsion assembly (405) comprises: a limit movable link (40501), a first hinged link (40502), a first linear drive motor (40503) and a second linear drive motor (40504); limit movable links (40201) are respectively arranged on opposite sides of the lower end of the drive rod (402); each limit movable link (40501) is movably arranged on each limit movable link (40501), and one end of the limit movable link (40501) is hinged to the inner side of the first frosted ring (403); opposite sides of the upper surface of the first frosted ring (403) are respectively hinged to one end of the hinged link (40502); the other end of the hinged link (40502) is hinged to the second frosted ring (404); The lower surface is hinged, and the first linear drive motor (40503) is respectively arranged on the opposite sides of the drive rod (402), the output end of the first linear drive motor (40503) is hinged on the inner side of the second frosted ring (404), and the other end thereof is hinged on the rod body of the drive rod (402), and the second linear drive motor (40504) is respectively arranged on the opposite sides above the first linear drive motor (40503), the output end of the second linear drive motor (40504) is hinged on the first linear drive motor (40503), and the other end thereof is hinged on the part of the rod body of the drive rod (402) located above the first linear drive motor (40503).

3. A building material grinding device according to claim 2, characterized in that: The limiting frame (40201) is provided with a first clamping column (40202), and the limiting movable connecting rod (40501) is provided with a strip groove (4050101) adapted to the first clamping column (40202).

4. A building material grinding device according to claim 1, characterized in that: The fixing mechanism (3) comprises: a fixing block (301), a driving ring block (302) and a first driving assembly (303); an annular groove (101) is arranged on the frame (1) directly below the grinding mechanism (4); a plurality of fixing blocks (301) are arranged around the inner circumference of the annular groove (101); each fixing block (301) is arranged on the inner side of the annular groove (101) so as to be reciprocatingly movable toward the axial direction of the annular groove (101); the driving ring block (302) is coaxially rotatably arranged on the annular groove (101), and a plurality of driving grooves (30201) are penetrated on its upper surface; a second clamping column (30101) adapted to the driving groove (30201) is vertically arranged on the fixing block (301); the first driving assembly (303) is arranged on one side of the driving ring block (302) so as to drive the driving ring block (302) to rotate.

5. A building material grinding device according to claim 4, characterized in that: The first driving component (303) is a third linear driving motor (30301), one end of the third linear driving motor (30301) is hinged on the driving ring block (302), and the other end is hinged on the frame (1).

6. A building material grinding device according to claim 1, characterized in that: The frame (1) is provided with limited lifting slide grooves (102) vertically on opposite sides thereof; the lifting frame (2) is U-shaped, and its opposite ends are respectively matched with the limited lifting slide grooves (102).

7. A building material grinding device according to claim 6, characterized in that: The lifting mechanism (5) comprises: a gear (501) and a second driving assembly (502); a rack (201) is vertically arranged on one side of the lifting frame (2); a gear (501) meshing with the rack (201) is rotatably arranged on one side of the rack (201); and the second driving assembly (502) is arranged on one side of the gear (501) to drive the gear (501) to rotate.

8. A building material grinding device according to claim 7, characterized in that: The second driving assembly (502) comprises: a second rotating driving motor (50201), a worm (50202) and a worm wheel (50203); a worm wheel (50203) is coaxially arranged on one side of the gear (501); the second rotating driving motor (50201) is arranged on one side of the worm wheel (50203), and its output shaft is coaxially arranged with a worm (50202) meshing with the worm wheel (50203).

9. A building material grinding device according to claim 4, characterized in that: The inner side of the fixing block (301) is provided with anti-slip grooves (30102).

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