Powder grinding device for powder coating

Abstract

The invention belongs to the technical field of powder coating production equipment, and particularly relates to a powder coating grinding device which comprises a grinding bin cover, an auxiliary positioning ring and a sealing plate, the auxiliary positioning ring is arranged below the grinding bin cover, and the sealing plate is arranged on the inner side of the grinding bin cover. By arranging the grinding shaft, the stirring wheel, the stirring column, the rotating supporting ring, the longitudinal shaft driving support, the linkage gear, the rack, the displacement clamping block and the positioning clamping block, a first motor drives a driven gear ring to rotate through the driving gear, the driven gear ring drives the grinding shaft to rotate, and when the grinding shaft rotates, a grinding cone and an impact rod on the periphery synchronously rotate; and the raw materials are ground into powder. After being ground, the raw materials are gradually discharged out of the grinding bin cover from the bottom through a threaded structure on the periphery of the grinding cone. When the internal structure of the grinding bin cover needs to be cleaned, the grinding bin cover can be quickly separated from an external protection structure through cooperation of the rotary supporting ring, the linkage gear and the rack, and the internal structure is completely exposed, so that the internal cleaning efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of powder coating production equipment, in particular to a powder grinding device for powder coating. Background Art

[0002] Powder coating grinding is a core process that converts solid raw materials such as resins, pigments, and additives into micron-level uniform powders through steps such as raw material premixing, melt extrusion, cooling and crushing, fine grinding and screening, and surface modification. Its precise particle size control (usually 15-50μm) and chemical stability determine the leveling, adhesion, and color expression of the coating. It is widely used in metal / non-metal surface coatings in the fields of home appliances, automobiles, building materials, etc. It can be adapted to a variety of resin systems such as epoxy, polyester, and fluorocarbon to meet the diversified functional requirements of anti-corrosion, decoration, insulation, etc., and has both environmental protection (no solvent volatilization) and efficient production characteristics.

[0003] The prior art has the following deficiencies: in the prior art, "a grinding device for powder coatings" with publication number CN111729752B, "a collecting hopper is arranged at the bottom of the inner cavity of the box; the oblique feed pipe is extended into the inner cavity of the box and connected with the inner cavity of the outer barrel; the square shaft is inserted into the square hole; an outer grinding ring is fixed to the inner cavity of the box; an inner grinding ring is fixed to the bottom end face of the conical mesh plate; the axial direction of the mesh is arranged parallel to the axial direction of the square shaft; a slider matching the guide rail is fixed to the end of the slider bracket; the slider is embedded in the guide rail; a bulk material cone shell with the cone top facing upward is fixed to the transmission sleeve; the bulk material cone shell is coaxially arranged with the transmission sleeve."

[0004] The above structure can make the grinding more efficient by screening powders of different particle sizes for grinding. However, the structure adopts a traditional fixed installation kit, and the internal grinding structure and the external protective structure cannot be quickly disassembled. When the raw materials of powder coatings are ground, their texture is often loose powder or viscous fluid. In the complex environment inside the grinding structure, they will fully contact each other over a large area. If they are not thoroughly cleaned, there will be residual substances. The residual substances will cause cross-contamination to the next grinding operation, resulting in poor color consistency. When cleaning the current grinding device, only a small part of its internal structure is exposed to the outside, resulting in low cleaning efficiency and poor flexibility in the use of the device. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a grinding device for powder coatings, which solves the current problem of poor efficiency of regular cleaning leading to residues inside.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a powder grinding device for powder coating, comprising a powder grinding bin cover, an auxiliary positioning ring, and a sealing plate, wherein the auxiliary positioning ring is arranged below the powder grinding bin cover, the sealing plate is arranged on the inner side of the powder grinding bin cover, a main control bracket is arranged on the outer side of the powder grinding bin cover, a control panel is arranged on the side end of the main control bracket, a first motor is arranged on the top of the main control bracket, and a second motor is arranged in the middle of the main control bracket.

[0007] A grinding shaft is arranged inside the grinding bin cover, a driving wheel is arranged at the upper end of the second motor, a rotating support ring is arranged at the outer end face of the grinding bin cover, a longitudinal axis driving bracket is arranged at the outer periphery of the rotating support ring, a linkage gear is arranged on the inner side of the longitudinal axis driving bracket, and a third motor is arranged at the side end of the linkage gear.

[0008] The grinding shaft also includes a grinding cone, an impact rod and a shaft seat. The grinding cone is sleeved on the outer periphery of the grinding shaft near the bottom. The impact rod is provided in four groups and is movably connected to the outer periphery of the grinding shaft. The shaft seat is sleeved on the bottom of the grinding shaft.

[0009] In some embodiments, each group of the impact rods consists of eighteen rods, which are evenly distributed in a circular shape and extend radially outward. A disc-shaped structure is provided near the grinding shaft and wrapped around the outside.

[0010] In some embodiments, the grinding shaft is divided into two sections with different structures, wherein the section close to the bottom shaft seat is a columnar structure, and the section at the upper end of the grinding cone is divided into four columnar structures of the same size.

[0011] In some embodiments, the grinding bin cover also includes a positioning block, a rack, a driven gear ring and a driving gear. The positioning blocks are provided in three groups and are welded to the periphery of the grinding bin cover. The racks are provided in three groups and are fixedly connected to the end face of the outer wall of the grinding bin cover.

[0012] In some embodiments, the driven gear ring is sleeved on the outer periphery of the grinding shaft, the tooth groove of the driving gear is meshed with the driven gear ring, and is movably connected to the first motor.

[0013] In some embodiments, the rotating support ring further includes a displacement block, a shifting post, a support frame and a pulley. The displacement block is welded to the inner wall end face of the rotating support ring. The shifting posts are provided in five groups and welded to the upper end of the rotating support ring.

[0014] In some embodiments, the support frames are provided in three groups and are clamped on the outer periphery of the rotating support ring, and the pulley is movably connected to the inner part of the support frame facing the rotating support ring.

[0015] In some embodiments, a circularly distributed inner groove structure is provided in the middle of the outer side of the rotating support ring, and the pulley is embedded in the middle of the inner groove.

[0016] In some of the embodiments, the positioning block and the displacement block are in contact with each other in a right-angle connection manner, and a 35° inclination angle is set on both sides.

[0017] Compared with the prior art, the present invention provides a powder grinding device for powder coatings, which has the following

[0018] Beneficial effects:

[0019] A powder grinding device for powder coatings is provided with a powder grinding shaft, a toggle wheel, a toggle post, a rotating support ring, a longitudinal axis driving bracket, a linkage gear, a rack, a displacement block and a positioning block. When the device is used, the operator controls three groups of motors through a control panel. Raw materials are added through the top of the powder grinding bin cover, and the first motor drives the driven gear ring to rotate through the driving gear, and the driven gear ring drives the powder grinding shaft to rotate. When the powder grinding shaft rotates, the peripheral grinding cone and the impact rod rotate synchronously, and the raw materials are ground. After the raw materials are ground, they are gradually discharged from the bottom of the powder grinding bin cover through the threaded structure on the periphery of the grinding cone. When the internal structure of the powder grinding bin cover needs to be cleaned, the second motor drives the toggle wheel to rotate, and the toggle wheel drives the toggle post to move through the connection with the toggle post, and the rotating support ring is driven at the same time. The rotating support ring rotates with a fixed axis under the support of the side end pulley, and drives the displacement block inside to rotate. After the position of the displacement block changes, it is separated from the upper end positioning block. At this time, the powder mill cover lacks a supporting structure and moves vertically downward under the limit of the linkage gear until the outer periphery of the powder mill cover is clamped by the auxiliary positioning ring. At this time, the powder mill shaft, grinding cone, and impact rod inside the powder mill cover are exposed to the outside. After the operator quickly cleans this part of the structure, the third motor is started and drives the rack and the powder mill cover to move upward through the linkage gear until the powder mill cover is reset. The second motor drives the rotating support ring in the reverse direction through the toggle wheel, and the displacement block is inserted into the lower end of the positioning block;

[0020] Through the above settings and processes, the equipment can quickly detach from the external protection structure when internal maintenance and cleaning is required, and the internal structure can be fully exposed, thereby greatly improving the internal cleaning efficiency. Through the coordination of the linkage gear, rack and rotating support ring, the external protection structure can also be automatically locked. Compared with the current grinding device, while stably supporting the peripheral protection structure, the rotation lock replaces the commonly used welding fixation, which improves the flexibility of the device and the automation of regular maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2It is a schematic diagram of the side end structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of the milling bin cover of the present invention;

[0024] Figure 4 It is a schematic diagram of the cross-sectional structure of the grinding bin cover and the rotating support ring of the present invention;

[0025] Figure 5 This is a schematic diagram of the connection position structure of the rotating support ring and the main control bracket of the present invention;

[0026] Figure 6 This is a schematic diagram of the grinding shaft and the outer connection structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the installation position structure of the second motor and the shifting wheel of the present invention;

[0028] Figure 8 This is a schematic diagram of the pulley installation position of the present invention;

[0029] Fig. 9 It is a schematic diagram of the connection position of the linkage gear and the third motor of the present invention.

[0030] In the figure: 1. grinding bin cover; 101. positioning block; 102. rack; 103. driven gear ring; 104. driving gear; 2. auxiliary positioning ring; 3. sealing plate; 4. grinding shaft; 401. grinding cone; 402. impact rod; 403. shaft seat; 5. main control bracket; 6. control panel; 7. first motor; 8. second motor; 9. toggle wheel; 10. rotating support ring; 1001. displacement block; 1002. toggle column; 1003. support frame; 1004. pulley; 11. longitudinal axis driving bracket; 12. linkage gear; 13. third motor. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do 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 limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 communication 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.

[0034] In the present embodiment: a grinding device for powder coating comprises a grinding bin cover 1, an auxiliary positioning ring 2, and a sealing plate 3, wherein the auxiliary positioning ring 2 is arranged below the grinding bin cover 1, the sealing plate 3 is arranged on the inner side of the grinding bin cover 1, a main control bracket 5 is arranged on the outer side of the grinding bin cover 1, a control panel 6 is arranged on the side end of the main control bracket 5, a first motor 7 is arranged on the top of the main control bracket 5, and a second motor 8 is arranged in the middle of the main control bracket 5.

[0035] A grinding shaft 4 is arranged inside the grinding bin cover 1, a driving wheel 9 is arranged at the upper end of the second motor 8, a rotating support ring 10 is arranged on the outer end face of the grinding bin cover 1, a longitudinal axis driving bracket 11 is arranged on the outer periphery of the rotating support ring 10, a linkage gear 12 is arranged on the inner side of the longitudinal axis driving bracket 11, and a third motor 13 is arranged on the side end of the linkage gear 12.

[0036] The grinding shaft 4 also includes a grinding cone 401, an impact rod 402 and a shaft seat 403. The grinding cone 401 is sleeved on the outer periphery of the grinding shaft 4 near the bottom. The impact rod 402 is provided in four groups and is movably connected to the outer periphery of the grinding shaft 4. The shaft seat 403 is sleeved on the bottom of the grinding shaft 4.

[0037] In the present embodiment, each group of impact rods 402 is composed of eighteen rods, which are evenly distributed in a circular position and extend radially outward. A disc-shaped structure is provided near the grinding shaft 4 and wrapped around the outside. The grinding shaft 4 as a whole is divided into two sections with different structures, one section near the bottom shaft seat 403 is a columnar structure, and the section at the upper end of the grinding cone 401 is divided into four columnar structures of the same size.

[0038] Specifically, Figure 1 Figure 3 as well as Figure 6 As shown, the annular grinding area composed of each group of eighteen impact rods 402 can pulverize the raw materials through its own high-speed collision, and the grinding shaft 4 rotates vertically under the support of the shaft seat 403.

[0039] In this embodiment, the grinding bin cover 1 also includes a positioning block 101, a rack 102, a driven gear ring 103 and a driving gear 104. The positioning block 101 is provided in three groups and is welded to the outer periphery of the grinding bin cover 1. The rack 102 is provided in three groups and is fixedly connected to the outer wall end face of the grinding bin cover 1. The driven gear ring 103 is sleeved on the outer periphery of the grinding shaft 4. The tooth groove of the driving gear 104 is meshed with the driven gear ring 103 and is movably connected to the first motor 7.

[0040] Specifically, Figure 2 and Figure 5 As shown, the driven gear ring 103 is driven by the driving gear 104 through the meshing of the tooth grooves, thereby driving the grinding shaft 4, and the three sets of racks 102 can be driven synchronously when the linkage gear 12 rotates, and drive the grinding bin cover 1 to move upward.

[0041] In this embodiment, the rotating support ring 10 also includes a displacement block 1001, a lever 1002, a support frame 1003 and a pulley 1004. The displacement block 1001 is welded to the inner wall end face of the rotating support ring 10. The lever 1002 is provided in five groups and is welded to the upper end of the rotating support ring 10. The support frame 1003 is provided in three groups and is clamped to the outer periphery of the rotating support ring 10. The pulley 1004 is movably connected to the inside of the support frame 1003 facing the rotating support ring 10. An inner groove structure with a circular distribution is opened in the middle part of the outer side of the rotating support ring 10, and the pulley 1004 is embedded in the middle part of the inner groove.

[0042] Specifically, Figure 4 , 7 As shown in FIGS. 8 and 9 , the inner groove opened in the middle of the outer side of the rotating support ring 10 can limit the position of the pulley 1004, and the pulley 1004 can reduce the outer friction when the rotating support ring 10 rotates, thereby reducing the wear of the structure and improving the smoothness of rotation.

[0043] In this embodiment, the positioning block 101 and the displacement block 1001 are in contact with each other in a right-angle connection manner, and a 35° inclination angle is set on both sides.

[0044] The working principle and use process of the present invention: When the device is used, the operator controls three groups of motors through the control panel 6. Raw materials are added through the top of the grinding bin cover 1, and the first motor 7 drives the driven gear ring 103 to rotate through the driving gear 104, and the driven gear ring 103 drives the grinding shaft 4 to rotate. When the grinding shaft 4 rotates, the grinding cone 401 and the impact rod 402 on the periphery rotate synchronously, and the raw materials are ground. After the raw materials are ground, they are gradually discharged from the bottom of the grinding bin cover 1 through the threaded structure on the periphery of the grinding cone 401. When the internal structure of the grinding bin cover 1 needs to be cleaned, the second motor 8 drives the toggle wheel 9 to rotate, and the toggle wheel 9 drives the toggle column 1002 to move through the connection with the toggle column 1002, and at the same time, the rotating support ring 10 is driven, and the rotating support ring 10 is supported by the side end pulley 1004 to rotate on a fixed axis, and drives the inner displacement block 1001 to rotate, and the displacement block 1001 is separated from the upper end positioning block 101 after the position change. At this time, the powder milling bin cover 1 lacks a supporting structure and moves vertically downward under the limit of the linkage gear 12 until the outer periphery of the powder milling bin cover 1 is clamped by the auxiliary positioning ring 2. At this time, the powder milling shaft 4, the grinding cone 401, and the impact rod 402 inside the powder milling bin cover 1 are all exposed to the outside. After the operator quickly cleans this part of the structure, the third motor 13 is started, and the rack 102 and the powder milling bin cover 1 are driven to move upward through the linkage gear 12 until the powder milling bin cover 1 is reset. The second motor 8 drives the rotating support ring 10 in the reverse direction through the toggle wheel 9, and the displacement block 1001 is inserted into the lower end of the positioning block 101.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A powder grinding device for powder coating, comprising a powder grinding bin cover (1), an auxiliary positioning ring (2), and a sealing plate (3), wherein the auxiliary positioning ring (2) is arranged below the powder grinding bin cover (1), the sealing plate (3) is arranged inside the powder grinding bin cover (1), a main control bracket (5) is arranged outside the powder grinding bin cover (1), a control panel (6) is arranged at the side end of the main control bracket (5), a first motor (7) is arranged at the top of the main control bracket (5), and a second motor (8) is arranged in the middle of the main control bracket (5), characterized in that: A grinding shaft (4) is arranged inside the grinding bin cover (1), a shifting wheel (9) is arranged at the upper end of the second motor (8), a rotating support ring (10) is arranged on the outer end surface of the grinding bin cover (1), a longitudinal axis driving bracket (11) is arranged on the outer periphery of the rotating support ring (10), a linkage gear (12) is arranged inside the longitudinal axis driving bracket (11), and a third motor (13) is arranged at the side end of the linkage gear (12); The grinding shaft (4) further comprises a grinding cone (401), an impact rod (402) and a shaft seat (403); the grinding cone (401) is sleeved on the outer periphery of the grinding shaft (4) near the bottom; the impact rod (402) is provided in four groups and is movably connected to the outer periphery of the grinding shaft (4); and the shaft seat (403) is sleeved on the bottom of the grinding shaft (4).

2. A powder grinding device for powder coating according to claim 1, characterized in that: Each group of the impact rods (402) consists of eighteen rods, which are evenly distributed in a circular shape and extend radially outward. A disc-shaped structure is provided at a position close to the grinding shaft (4) and wrapped around the outside.

3. A powder grinding device for powder coating according to claim 1, characterized in that: The grinding shaft (4) is divided into two sections with different structures, wherein the section close to the bottom shaft seat (403) is a columnar structure, and the section at the upper end of the grinding cone (401) is divided into four columnar structures of the same size.

4. A powder grinding device for powder coating according to claim 1, characterized in that: The powder mill silo cover (1) further comprises a positioning block (101), a rack (102), a driven gear ring (103) and a driving gear (104); the positioning block (101) is provided in three groups and is welded to the periphery of the powder mill silo cover (1); the rack (102) is provided in three groups and is fixedly connected to the end face of the outer wall of the powder mill silo cover (1).

5. A powder grinding device for powder coating according to claim 4, characterized in that: The driven gear ring (103) is sleeved on the outer periphery of the grinding shaft (4), the tooth groove of the driving gear (104) is meshed with the driven gear ring (103), and is movably connected to the first motor (7).

6. A powder grinding device for powder coating according to claim 1, characterized in that: The rotating support ring (10) further comprises a displacement block (1001), a shifting post (1002), a support frame (1003) and a pulley (1004); the displacement block (1001) is welded to the inner wall end face of the rotating support ring (10); and the shifting post (1002) is provided in five groups and is welded to the upper end of the rotating support ring (10).

7. A powder grinding device for powder coating according to claim 6, characterized in that: The support frame (1003) is provided in three groups and is clamped on the outer periphery of the rotating support ring (10). The pulley (1004) is movably connected to the inside of the support frame (1003) facing the rotating support ring (10).

8. A powder grinding device for powder coating according to claim 1, characterized in that: An inner groove structure distributed in an annular manner is provided in the middle of the outer side of the rotating support ring (10), and the pulley (1004) is embedded in the middle of the inner groove.

9. A powder grinding device for powder coating according to claim 4, characterized in that: The positioning block (101) and the displacement block (1001) are in contact with each other in a right-angle connection manner, and both sides are provided with an inclination angle of 35°.

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