Coating grinding machine with screening mechanism

Abstract

The utility model discloses a coating grinding machine with a screening mechanism, which relates to the technical field of coating grinding machines, and comprises a machine body and a grinding roller, the outer side of the machine body is provided with a support frame, and one side of the machine body is connected with a feeding box. According to the coating grinding machine with the screening mechanism, particles ground through a grinding roller fall on a screening net, small particles fall between a fixed block and a grinding block, secondary grinding is conducted, then a second motor is started to drive a lead screw to rotate, a movable plate moves towards one side on the lead screw, meanwhile, a third electric push rod downwards pushes a push plate, and the particles are ground through the screening net. The bottom end of the push plate abuts against the surface of the screening net, raw materials stacked on the screening net can be pushed into the circulation box along with movement of the push plate, then the raw materials are conveyed into the flow guide groove through the conveying screw rod, the raw materials are guided to the position above the machine body through the flow guide groove, the raw materials are dispersed towards the two sides through the flow distribution plate, and grinding of the grinding roller is facilitated; and the working quality of the coating grinding machine is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of paint grinding machines, in particular to a paint grinding machine with a screening mechanism. Background Art

[0002] Powder coating production is a common coating manufacturing process that involves converting solid particles into a fine powder form suitable for surface coating. This process utilizes a paint grinder, a key piece of equipment used in powder coating production. It is used to grind the raw materials to the desired particle size and uniformity. The paint grinder uses friction and impact between a rotating grinding body and the coating material to grind the raw materials into the desired fine particles. The continuous movement of the grinding body within the machine generates shear and impact forces that gradually reduce the raw material particles.

[0003] However, the existing paint grinder has the following disadvantages: since the paint grinder only grinds the paint raw materials once, insufficient grinding may occur, and the sizes of the ground raw materials are different, resulting in insufficient grinding, which will reduce the working quality of the paint grinder. Therefore, the existing paint grinder needs to be improved. Utility Model Content

[0004] The purpose of the present utility model is to provide a paint grinder with a screening mechanism to solve the problem raised in the above background technology that the paint grinders currently on the market may not grind sufficiently, and the sizes of the raw materials ground out are different, resulting in insufficient grinding and reducing the working quality of the paint grinder.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a paint grinder with a screening mechanism, comprising a machine body and a grinding roller, a support frame being installed on the outside of the machine body, a feed box being connected to one side of the machine body, a discharge pipe being connected to the bottom of the machine body, a receiving box being provided below the discharge pipe, the grinding roller being installed inside the machine body through a bearing, a No. 1 drive assembly being installed on one side of the machine body and connected to the grinding roller through a coupling, a fixed block being provided on the inner wall of the machine body near the bottom of the grinding roller, a grinding block being provided on the inner side of the fixed block, and a No. 2 drive assembly being connected below the grinding block.

[0006] Preferably, a circulation mechanism is installed on the side of the machine body away from the feed box, a screening net is provided between the grinding roller and the fixed block, and the screening net is installed inside the machine body.

[0007] Preferably, a pushing mechanism is installed above the screening net near the grinding roller, and the pushing mechanism is installed inside the machine body. A movable plate is provided inside the pushing mechanism, one end of the pushing mechanism is connected to a No. 2 motor, and a material guiding mechanism is installed below the machine body near the discharge pipe.

[0008] Preferably, the circulation mechanism includes a No. 1 motor, a circulation box, a guide groove, a conveying screw and a diverter plate. The circulation box is fixed on the side of the body away from the feed box, and the conveying screw is installed inside the circulation box through a bearing.

[0009] Preferably, one end of the conveying screw is connected to a No. 1 motor, the circulation box is fixedly connected to a guide groove on one side close to the top of the body, and a diverter plate is fixed to the upper opening of the body close to the guide groove.

[0010] Preferably, the material guiding mechanism includes a material guiding rod, a No. 1 electric push rod, a rotating seat and a No. 2 electric push rod, and the No. 1 electric push rod is movably installed on the bottom of the machine body near the discharge pipe through the rotating seat.

[0011] Preferably, one end of the No. 1 electric push rod is connected to a material guide rod, and a No. 2 electric push rod is connected between the bottom end of the body and the No. 1 electric push rod via a movable shaft.

[0012] Preferably, the pushing mechanism includes a screw, a No. 3 electric push rod and a push plate. A screw is installed in the reserved groove on the inner wall of the body through a bearing, and one end of the screw is connected to the No. 2 motor.

[0013] Preferably, the screw rod and the movable plate are threadedly connected, a No. 3 electric push rod is fixed in the built-in groove of the movable plate, a push plate is connected below the No. 3 electric push rod, and the push plate and the movable plate are slidably connected.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. A circulation mechanism and a pushing mechanism are provided. The particles ground by the grinding roller fall onto the screening net, and the smaller particles fall between the fixed block and the grinding block for secondary grinding. Then, by starting the No. 2 motor to drive the screw to rotate, the movable plate moves to one side on the screw, and at the same time, the No. 3 electric push rod pushes the push plate downward so that the bottom end of the push plate rests on the surface of the screening net. As the push plate moves, the raw materials accumulated on the screening net can be pushed into the circulation box, and then the raw materials are transported to the guide trough through the conveying screw, and the raw materials are introduced into the top of the machine body through the guide trough, and the raw materials are dispersed to both sides through the diverter plate, which is convenient for the grinding roller to grind. The raw materials are circulated and ground after screening, which improves the working quality of the paint grinder.

[0016] 2. A material guiding mechanism is provided. By starting the No. 2 electric push rod, the No. 2 electric push rod is extended toward the lower material pipe, driving one end of the No. 1 electric push rod to rotate around the rotating seat, and then the No. 1 electric push rod is extended to push the material guide rod to the middle of the material receiving box. Then, as the No. 2 electric push rod contracts and extends, the No. 1 electric push rod can drive the material guide rod to push the raw materials to both sides, saving labor and improving the practicality of the paint grinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the side cross-sectional structure of the machine body of the utility model;

[0020] Figure 4 This is an enlarged structural diagram of point A of the present utility model.

[0021] In the figure: 1. Machine body; 2. Support frame; 3. Material receiving box; 4. Material feeding box; 5. Grinding roller; 6. Drive assembly No. 1; 7. Circulation mechanism; 701. Motor No. 1; 702. Circulation box; 703. Guide trough; 704. Conveying screw; 705. Diverter plate; 8. Fixed block; 9. Material guiding mechanism; 901. Material guiding rod; 902. Electric push rod No. 1; 903. Rotating seat; 904. Electric push rod No. 2; 10. Feeding pipe; 11. Grinding block; 12. Drive assembly No. 2; 13. Pushing mechanism; 131. Screw; 132. Electric push rod No. 3; 133. Pushing plate; 14. Moving plate; 15. Motor No. 2; 16. Screening net. DETAILED DESCRIPTION

[0022] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-Figure 4The utility model provides a technical solution: a paint grinder with a screening mechanism, comprising a body 1 and a grinding roller 5, a support frame 2 is installed on the outside of the body 1, a feed box 4 is connected to one side of the body 1, a discharge pipe 10 is connected to the bottom of the body 1, a receiving box 3 is provided below the discharge pipe 10, the grinding roller 5 is installed inside the body 1 through a bearing, a No. 1 drive assembly 6 connected to the grinding roller 5 through a coupling is installed on one side of the body 1, a fixed block 8 is provided on the inner wall of the body 1 near the bottom of the grinding roller 5, a grinding block 11 is provided on the inner side of the fixed block 8, and a No. 2 drive assembly 12 is connected below the grinding block 11.

[0024] See also Figure 1-Figure 3 A circulation mechanism 7 is installed on the side of the body 1 away from the feed box 4, a screening net 16 is provided between the grinding roller 5 and the fixed block 8, and the screening net 16 is installed inside the body 1, the circulation mechanism 7 includes a No. 1 motor 701, a circulation box 702, a guide groove 703, a conveying screw 704 and a diverter plate 705, a circulation box 702 is fixed on the side of the body 1 away from the feed box 4, a conveying screw 704 is installed inside the circulation box 702 through a bearing, one end of the conveying screw 704 is connected to the No. 1 motor 701, the circulation box 702 is fixedly connected to the guide groove 703 on the side close to the top of the body 1, and a diverter plate 705 is fixed at the upper opening of the body 1 close to the guide groove 703, and the cross-sectional shape of the diverter plate 705 is triangular.

[0025] During specific implementation, since the paint grinder may not grind the paint raw materials sufficiently when grinding them, some raw material particles may be of different sizes, and the raw materials need to be screened and ground again. Therefore, the grinding roller 5 can be driven to rotate by the No. 1 drive component 6, and the grinding roller 5 grinds the paint raw materials once. Then the ground particles fall onto the screening mesh 16, and the smaller particles fall between the fixed block 8 and the grinding block 11 for secondary grinding. The raw materials with larger particles enter the circulation box 702 and are transported to the guide groove 703 by the conveying screw 704. The raw materials are introduced into the upper part of the machine body 1 through the guide groove 703, and the raw materials are dispersed to both sides through the diverter plate 705 to facilitate grinding by the grinding roller 5. The raw materials are circulated and ground after screening, which is beneficial to improving the working quality of the paint grinder.

[0026] See also Figure 1-Figure 4A pushing mechanism 13 is installed above the screening net 16 near the grinding roller 5, and the pushing mechanism 13 is installed inside the machine body 1. A movable plate 14 is provided inside the pushing mechanism 13, and one end of the pushing mechanism 13 is connected to the No. 2 motor 15. The pushing mechanism 13 includes a screw rod 131, a No. 3 electric push rod 132 and a push plate 133. A screw rod 131 is installed in the reserved groove on the inner wall of the machine body 1 through a bearing, and one end of the screw rod 131 is connected to the No. 2 motor 15. The screw rod 131 and the movable plate 14 are threadedly connected, and a No. 3 electric push rod 132 is fixed in the built-in groove of the movable plate 14. A push plate 133 is connected below the No. 3 electric push rod 132, and the push plate 133 and the movable plate 14 are slidably connected.

[0027] During specific implementation, after the paint raw materials are screened through the screening mesh 16, in order to prevent raw materials with larger particles from accumulating on the screening mesh 16, the No. 2 motor 15 can be started to drive the screw 131 to rotate, and then the movable plate 14 moves to one side on the screw 131, and at the same time the No. 3 electric push rod 132 pushes the push plate 133 downward so that the bottom end of the push plate 133 rests on the surface of the screening mesh 16. As the push plate 133 moves, the raw materials accumulated on the screening mesh 16 can be pushed into the circulation box 702, which is convenient for circulating grinding. The push plate 133 assists in pushing the material, which improves the working efficiency of the paint grinder.

[0028] See also Figure 1-Figure 3 A material guiding mechanism 9 is installed below the body 1 near the discharge pipe 10, and the material guiding mechanism 9 includes a material guiding rod 901, a No. 1 electric push rod 902, a rotating seat 903 and a No. 2 electric push rod 904. The body 1 is movably installed with a No. 1 electric push rod 902 through the rotating seat 903 below the discharge pipe 10, and one end of the No. 1 electric push rod 902 is connected to the material guiding rod 901. The No. 2 electric push rod 904 is connected between the bottom end of the body 1 and the No. 1 electric push rod 902 through a movable shaft. The material guiding rod 901 is a round rod.

[0029] During specific implementation, since the paint raw materials are discharged after grinding, the raw materials are easily accumulated in the middle of the material receiving box 3, and the staff needs to manually push the materials to both sides of the material receiving box 3, which is time-consuming. The No. 2 electric push rod 904 can be started to extend the No. 2 electric push rod 904 toward the lower material tube 10, driving one end of the No. 1 electric push rod 902 to rotate around the rotating seat 903, and then the No. 1 electric push rod 902 extends to push the guide rod 901 to the middle of the material receiving box 3, and then as the No. 2 electric push rod 904 contracts and extends, the No. 1 electric push rod 902 can drive the guide rod 901 to push the raw materials to both sides, saving labor and improving the practicality of the paint grinder.

[0030] Working principle: When using this paint grinder with a screening mechanism, first, put the paint raw materials into the feed box 4, and the grinding roller 5 is driven to rotate by the No. 1 driving component 6 to grind the raw materials, and then screened through the screening net 16, and the raw materials that fall on both sides of the grinding block 11 are screened and the grinding block 11 is driven to rotate on the inner side of the fixed block 8 by the No. 2 driving component 12 to grind the raw materials for the second time. The raw materials that are not screened are circulated and ground through the pushing mechanism 13 and the circulation mechanism 7. After grinding, the raw materials fall into the receiving box 3 from the discharge pipe 10, and at the same time, the raw materials accumulated in the middle of the receiving box 3 are pushed to both sides of the receiving box 3 by the guiding mechanism 9 to prevent the raw materials from overflowing. The setting of the circulation mechanism 7, the pushing mechanism 13 and the guiding mechanism 9 improves the working efficiency and practicality of the paint grinder. The contents not described in detail in this description belong to the existing technology well known to professional and technical personnel in this field.

[0031] 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 make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A paint grinding machine with a screening mechanism, comprising a machine body (1) and a grinding roller (5), characterized in that: A support frame (2) is installed on the outside of the machine body (1), a feed box (4) is connected to one side of the machine body (1), a discharge pipe (10) is connected to the bottom of the machine body (1), a receiving box (3) is provided below the discharge pipe (10), the grinding roller (5) is installed inside the machine body (1) through a bearing, a first drive assembly (6) connected to the grinding roller (5) through a coupling is installed on one side of the machine body (1), a fixed block (8) is provided on the inner wall of the machine body (1) near the bottom of the grinding roller (5), a grinding block (11) is provided on the inner side of the fixed block (8), and a second drive assembly (12) is connected below the grinding block (11).

2. A paint grinder with a screening mechanism according to claim 1, characterized in that: A circulation mechanism (7) is installed on the side of the machine body (1) away from the feed box (4), a screening net (16) is provided between the grinding roller (5) and the fixed block (8), and the screening net (16) is installed inside the machine body (1).

3. A paint grinder with a screening mechanism according to claim 2, characterized in that: A pushing mechanism (13) is installed above the screening net (16) near the grinding roller (5), and the pushing mechanism (13) is installed inside the machine body (1). A movable plate (14) is provided inside the pushing mechanism (13), and one end of the pushing mechanism (13) is connected to a No. 2 motor (15). A material guiding mechanism (9) is installed below the machine body (1) near the discharge pipe (10).

4. The paint grinder with a screening mechanism according to claim 2, characterized in that: The circulation mechanism (7) comprises a No. 1 motor (701), a circulation box (702), a guide groove (703), a conveying screw (704) and a diverter plate (705). The circulation box (702) is fixed on the side of the machine body (1) away from the feed box (4), and the conveying screw (704) is installed inside the circulation box (702) via a bearing.

5. The paint grinder with a screening mechanism according to claim 4, characterized in that: One end of the conveying screw (704) is connected to a No. 1 motor (701), and a guide groove (703) is fixedly connected to one side of the circulation box (702) near the top of the machine body (1), and a diverter plate (705) is fixed to the upper opening of the machine body (1) near the guide groove (703).

6. The paint grinder with a screening mechanism according to claim 3, characterized in that: The material guiding mechanism (9) comprises a material guiding rod (901), a first electric push rod (902), a rotating seat (903) and a second electric push rod (904). The first electric push rod (902) is movably mounted on the machine body (1) below the material discharge pipe (10) via the rotating seat (903).

7. The paint grinder with a screening mechanism according to claim 6, characterized in that: One end of the first electric push rod (902) is connected to a material guide rod (901), and a second electric push rod (904) is connected between the bottom end of the machine body (1) and the first electric push rod (902) via a movable shaft.

8. The paint grinder with a screening mechanism according to claim 3, characterized in that: The pushing mechanism (13) comprises a screw rod (131), a third electric push rod (132) and a push plate (133). The screw rod (131) is installed in a reserved groove on the inner wall of the machine body (1) through a bearing. One end of the screw rod (131) is connected to the second motor (15).

9. The paint grinder with a screening mechanism according to claim 8, characterized in that: The screw rod (131) and the movable plate (14) are connected by a threaded sleeve, a third electric push rod (132) is fixed in a built-in groove of the movable plate (14), a push plate (133) is connected below the third electric push rod (132), and a sliding sleeve is formed between the push plate (133) and the movable plate (14).

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