Automatic powdering machine

Abstract

The utility model discloses an automatic powder feeding machine which comprises a box body and a powder lifting device, and a lower mesh belt conveyor, an upper mesh belt conveyor, an upper powder storage box, a powder scattering mesh belt conveyor and a finished product conveyor are arranged in the box body; a lower belt of the lower mesh belt conveyor is close to the bottom of the box body, a powder distribution device is arranged above the lower belt of the lower mesh belt conveyor, and lower mesh belt supporting plates are arranged below an upper belt of the lower mesh belt conveyor and below a section of transition belt which is arranged between the upper belt and the lower belt of the lower mesh belt conveyor and used for conveying powder upwards; the upper mesh belt conveyor is located at a discharge port of the upper powder storage box, and an upper mesh belt supporting plate is arranged below an upper belt of the upper mesh belt conveyor; the dusting mesh belt conveyor is positioned below the discharge end of the upper mesh belt conveyor and above the lower mesh belt conveyor; in the process that the lower mesh belt conveyor carries the raw materials, the powder scattering mesh belt conveyor scatters powder to the tops and the peripheral sides of the raw materials, the tops and the peripheral sides of the raw materials are wrapped with the powder, the powder on the lower mesh belt supporting plate enables the bottoms of the raw materials to be wrapped with the powder, powder wrapping is uniform, and the automation degree is high.

Description

Technical Field

[0001] The utility model relates to the technical field of food production equipment, and more specifically, to an automatic powdering machine. Background Art

[0002] With the improvement of modern human living standards and the acceleration of the pace of life, the eating habits of young people are also changing. They no longer spend a lot of time on cooking, but are more inclined to choose instant foods. Prepared meat products are convenient to eat, nutritionally balanced, beautifully packaged, and can also shorten the preparation time for cooking. Therefore, they are favored by many consumers. At the same time, the standardized attributes of prepared meat products also have an important impact on the chain development of the catering industry.

[0003] Prepared meat products refer to fresh or frozen livestock and poultry meat (including livestock and poultry by-products) that are pre-processed and then processed by one or several of the processing methods such as flavoring, pickling, tumbling, sizing, coating with powder, forming, and heat treatment, and are stored, transported, and sold under low-temperature conditions. They are non-instant foods that need to be cooked before eating. The powdering machine is one of the important equipment in the coating with powder link.

[0004] The currently used powdering machines have problems such as uneven coating with powder, low efficiency, and low automation, and it is difficult to ensure the consistency of the coating thickness. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide an automatic powdering machine with uniform coating with powder, high coating efficiency, and high automation.

[0006] To solve the above technical problem, the technical solution of the utility model is as follows:

[0007] An automatic powdering machine, comprising: a box body and a powder lifting device. A lower net belt conveyor, an upper net belt conveyor, an upper powder storage box, a powder sprinkling net belt conveyor, and a finished product conveyor are arranged in the box body;

[0008] The lower belt of the lower net belt conveyor is close to the bottom of the box body. A powder spreading device for evenly spreading powder along the width direction of the lower net belt conveyor is arranged above the lower belt of the lower net belt conveyor. A lower net belt support plate is arranged below the upper belt of the lower net belt conveyor and below a section of transition belt for upwardly transporting powder between the upper and lower belts of the lower net belt conveyor;

[0009] The powder lifting device is used to lift the remaining powder after powder spreading by the powder spreading device into the upper powder storage box;

[0010] The upper net belt conveyor is located at the discharge port of the upper powder storage box, and is used to receive the powder output from the upper powder storage box and convey it to the powder sprinkling net belt conveyor. An upper net belt support plate is arranged below the upper belt of the upper net belt conveyor;

[0011] The powder spreading mesh belt conveyor is located below the discharge end of the upper mesh belt conveyor and above the lower mesh belt conveyor, and is used for evenly spreading the received powder towards the lower mesh belt conveyor;

[0012] During the process of the lower mesh belt conveyor transporting the raw materials, the powder spreading mesh belt conveyor is used to spread the powder onto the top and the peripheral sides of the raw materials, so that the top and the peripheral sides of the raw materials are coated with powder, and the powder on the lower mesh belt support plate is used to coat the bottom of the raw materials.

[0013] Preferably, along the running direction of the lower mesh belt conveyor, the downstream end of the upper belt of the lower mesh belt conveyor extends out of the lower mesh belt support plate.

[0014] Preferably, the powder distributing device includes a lower powder storage tank and a powder distributing screw conveyor arranged along the width direction of the lower mesh belt conveyor.

[0015] Preferably, a powder quantity detection component for detecting the powder quantity in the lower powder storage tank is arranged on the lower powder storage tank. The lower powder storage tank is replenished with materials by a feeding machine. When the powder quantity detection component detects that the powder quantity in the lower powder storage tank is excessive, the feeding machine stops replenishing materials.

[0016] Preferably, the powder lifting device includes a vertically arranged lifting screw conveyor. The feeding port of the lifting screw conveyor communicates with the discharge port of the powder distributing screw conveyor, and the discharge port of the lifting screw conveyor communicates with the upper powder storage tank.

[0017] Preferably, a powder storage control device is arranged above the upper belt of the upper mesh belt conveyor;

[0018] The powder storage control device includes a rotating roller, a floating frame and an angle detection component. The rotating roller is rotatably installed on the floating frame, the rotating roller is supported on the upper mesh belt conveyor, the floating frame is rotatably installed in the upper powder storage tank, and the angle detection component is used for detecting the angle of the floating frame;

[0019] When the angle detection component detects that the angle of the floating frame is lower than the set angle, the feeding machine replenishes the lower powder storage tank with materials.

[0020] Preferably, powder thickness adjusting devices are respectively arranged above the lower belt of the powder spreading mesh belt conveyor and above the upper belt of the upper mesh belt conveyor.

[0021] Preferably, the powder thickness adjusting device includes an electric actuator, a rotating shaft, a lever, a limit block, an adjusting plate, an elastic component and a fixed limit member. The electric actuator drives the rotation of the rotating shaft. One end of the lever is fixed on the rotating shaft, and the other end is provided with a ball head. There are two limit blocks, and the ball head is located between the two limit blocks to form a spherical hinge structure with the two limit blocks. The two limit blocks are fixed on the adjusting plate. The elastic component pushes the adjusting plate to abut against the fixed limit member, and the fixed limit member is arranged vertically.

[0022] Preferably, the powder spreading mesh belt conveyor is arranged along the width direction of the lower mesh belt conveyor, and return channels are respectively arranged at both ends of the powder spreading mesh belt conveyor, and the two return channels are respectively located on both sides of the lower mesh belt conveyor.

[0023] Preferably, a pressure roller device is arranged above the upper belt of the lower mesh belt conveyor;

[0024] The pressure roller device includes a pressure roller frame, a pressure roller, an eccentric wheel, a counterweight block, a handle, an elastic plunger and an arc-shaped hole plate. The middle of the pressure roller frame is rotatably installed. The pressure roller is rotatably installed at one end of the pressure roller frame. The eccentric wheel is rotatably installed above the other end of the pressure roller frame and abuts against the other end of the pressure roller frame. The counterweight block is fixed on the other end of the pressure roller frame. The handle is fixed on the eccentric wheel. The elastic plunger is installed on the handle. The arc-shaped hole plate is provided with a plurality of positioning holes cooperating with the elastic plunger, and the plurality of positioning holes are circumferentially distributed along the rotation center of the eccentric wheel.

[0025] Preferably, a finished product conveyor with one end extending out of the box body is arranged in the box body, and the finished product conveyor is used to receive the raw materials after powder coating on the lower mesh belt conveyor and output them.

[0026] Preferably, an upper blowing air duct arranged along the width direction of the finished product conveyor is arranged below the upper belt of the finished product conveyor, and the upper blowing air duct is provided with a plurality of upper blowing air outlets;

[0027] A lower blowing air duct arranged along the width direction of the finished product conveyor is arranged above the upper belt of the finished product conveyor, and the lower blowing air duct is provided with a plurality of lower blowing air outlets.

[0028] Preferably, a vibration device is arranged above the upper belt of the finished product conveyor, and the vibration device includes a vibration shaft driven by a power unit to rotate and a plurality of vibration blocks arranged on the vibration shaft.

[0029] After adopting the above technical solution, the beneficial effects of the present utility model are:

[0030] The automatic powdering machine of the present application automatically completes powder coating during the raw material transportation process, having the advantages of high automation degree, high efficiency, and uniform powder coating with good consistency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is the front view structural schematic diagram of an embodiment of the automatic powdering machine of the present utility model;

[0032] Figure 2 is Figure 1 the left view structural schematic diagram of

[0033] Figure 3 is Figure 1 the top view structural schematic diagram of

[0034] Figure 4 is Figure 1 the assembly structural schematic diagram of the middle box body, the lower mesh belt conveyor, and the finished product conveyor in

[0035] Figure 5 is Figure 4 the enlarged structural schematic diagram of part A in

[0036] Figure 6 is Figure 1 the structural schematic diagram of the powder thickness adjusting device in

[0037] Figure 7 is Figure 6 the left view structural schematic diagram of

[0038] Figure 8 is Figure 1 the structural schematic diagram of the powder spreading device in

[0039] Figure 9 is Figure 8 the left view structural schematic diagram of

[0040] Figure 10 is Figure 1 the structural schematic diagram of the lifting screw conveyor in

[0041] Figure 11 is Figure 1 the structural schematic diagram of the powder storage control device in

[0042] Figure 12 is Figure 1 the structural schematic diagram of the powder sprinkling mesh belt conveyor in

[0043] Figure 13 is Figure 1 the structural schematic diagram of the pressure roller device in

[0044] Figure 14 is Figure 1 the structural schematic diagram of the vibration device in

[0045] Figure 15 It is a schematic diagram of applying the automatic powdering machine of the present utility model to coat the raw material with powder;

[0046] In the figure: 1. Lower mesh belt conveyor; 1a. Lower mesh belt support plate; 1b. Driving wheel; 1c. Pressing plate; 1d. Combing plate; 2. Powder spreading device; 21. Lower powder storage tank; 22. Powder spreading screw conveyor; 23. Powder quantity detection part; 3. Control panel; 4. Box body; 41. Box door; 5. Lifting screw conveyor; 6. Upper mesh belt conveyor; 61. Upper mesh belt support plate; 7. Vacuum feeding machine; 8. Powder storage control device; 81. Rotating roller; 82. Floating frame; 9. Upper powder storage tank; 10. Powder sprinkling mesh belt conveyor; 101. Return material channel; 11. Finished product conveyor; 12. Powder thickness adjusting device; 121. Electric actuator; 122. Poking rod; 1221. Ball head; 123. Rotating shaft; 124. Limit block; 125. Adjusting plate; 1251. Long hole; 126. Fixed limit part; 127. Bolt; 128. Nut; 129. Spring; 13. Raw material; 14. Pressing roller device; 141. Pressing roller frame; 142. Pressing roller; 143. Eccentric wheel; 144. Counterweight; 145. Handle; 146. Elastic plunger; 147. Arc-shaped orifice plate; 148. Positioning hole; 15. Upper air blowing device; 16. Lower air blowing device; 17. Vibration device; 171. Vibration shaft; 172. Vibration block; 18. Front air suction device; 19. Rear air suction device; L. Transition belt. Detailed implementation manners

[0047] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0048] As Figure 1 、 Figure 2 and Figure 3 collectively shown, an automatic powdering machine includes: a box body 4 and a powder lifting device. Inside the box body 4, there are a lower mesh belt conveyor 1, an upper mesh belt conveyor 6, an upper powder storage tank 9, a powder sprinkling mesh belt conveyor 10 and a finished product conveyor 11;

[0049] The lower belt of the lower mesh belt conveyor 1 is close to the bottom of the box body 4. Above the lower belt of the lower mesh belt conveyor 1, there is a powder spreading device 2 for evenly spreading the powder along the width direction of the lower mesh belt conveyor 1. Below the upper belt of the lower mesh belt conveyor 1 and below a section of transition belt L between the upper and lower belts of the lower mesh belt conveyor 1 for upwardly transporting the powder, there is a lower mesh belt support plate 1a;

[0050] The powder lifting device is used to lift the remaining powder after powder spreading by the powder spreading device into the upper powder storage tank 9;

[0051] The upper belt conveyor 6 is located at the discharge port of the upper powder storage tank 9, and is used to receive the powder output by the upper powder storage tank 9 and convey it to the powder spreading belt conveyor 10. An upper belt support plate 61 is provided below the upper belt of the upper belt conveyor 6;

[0052] The powder spreading belt conveyor 10 is located below the discharge end of the upper belt conveyor 6 and above the lower belt conveyor 1, and is used to evenly spread the received powder in the direction of the lower belt conveyor 1.

[0053] As Figure 15 shown, during powder coating, the flow path of the flour is as follows: the powder at the bottom of the box body 4 is first evenly spread along the width direction of the lower belt conveyor 1 by the powder distributing device 2. Since the lower belt support plate 1a can support the powder, when the lower belt conveyor 1 operates, part of the powder on the bottom of the box body 4 is transported onto the upper belt. The excess powder during powder distribution is conveyed to the powder lifting device by the powder distributing device 2 and is transported upward into the upper powder storage tank 9 by the powder lifting device. The powder in the upper powder storage tank 9 falls onto the upper belt conveyor 6, and the upper belt conveyor 6 conveys the powder to the powder spreading belt conveyor 10, and the powder spreading belt conveyor 10 spreads the powder in the direction of the lower belt conveyor 1.

[0054] The flow path of the raw material 13 is as follows: the raw material 13 is input onto the lower belt conveyor 1 from the transition section a. When the raw material 13 is conveyed to the lower part of the powder spreading belt conveyor 10, the powder spread by the powder spreading belt conveyor 10 falls onto the top and the periphery of the raw material 13 to coat the top and the periphery of the raw material 13. At the same time, during the conveyance of the raw material 13, the powder on the lower belt support plate 1a adheres to the bottom of the raw material 13 to coat the bottom of the raw material 13, and the powder coating operation of the raw material 13 is completed.

[0055] The automatic powder feeding machine of the present application automatically completes powder coating during the conveyance of the raw material 13, and has the advantages of high automation degree, high efficiency, and uniform powder coating with good consistency.

[0056] As Figure 4 shown, to make full use of the powder, along the running direction of the lower belt conveyor 1, the downstream end of the upper belt of the lower belt conveyor 1 extends beyond the lower belt support plate 1a. When the upper belt drives the powder to leave the lower belt support plate 1a, the powder automatically falls to the bottom of the box body 4, and the powder circulates reciprocally, so that the powder can be fully utilized.

[0057] As Figure 6 and Figure 7 jointly shown, the powder coating thicknesses of different raw materials 13 are different, and it is necessary to adjust the paving thickness of the powder at the bottom of the box body 4. In the illustrated embodiment, a powder thickness adjusting device 12 is provided above the lower belt of the lower belt conveyor 1 to reduce the driving load of the lower belt conveyor 1 on the premise of ensuring the powder coating rate of the raw material 13.

[0058] The powder thickness adjusting device 12 includes an electric actuator 121, a lever 122, a rotating shaft 123, a limit block 124, an adjusting plate 125, an elastic component, and a fixed limiting member 126. The rotating shaft 123 and the adjusting plate 125 are arranged along the width direction of the conveyor. The electric actuator 121 drives the rotating shaft 123 to rotate. One end of the lever 122 is fixed to the rotating shaft 123, and the other end is provided with a ball head 1221. There are two limit blocks 124. The ball head 1221 is located between the two limit blocks 124 and forms a spherical hinge structure with the two limit blocks 124. The two limit blocks 124 are fixed to the adjusting plate 125. The elastic component pushes the adjusting plate 125 against the fixed limiting member 126, and the fixed limiting member 126 is arranged vertically. The fixed limiting member 126 is preferably a limiting plate or a limiting rod, etc.

[0059] The elastic component includes a bolt 127, a nut 128, and a spring 129. The adjusting plate 125 is provided with a vertical long hole 1251. The bolt 127 passes through the long hole 1251 and is fixed to the fixed limiting member 126. The nut 128 is threadedly connected to the bolt 127. The spring 129 is sleeved on the bolt 127 and is located between the nut 128 and the adjusting plate 125.

[0060] When the electric actuator 121 operates, it drives the rotating shaft 123 to rotate a certain angle. The rotating shaft 123 drives the lever 122 to rotate upward or downward. When the lever 122 rotates, it adjusts the up-and-down position of the limit block 124 through the ball head 1221, and then drives the adjusting plate 125 to move up and down, adjusting the distance between the adjusting plate 125 and the lower belt of the lower net belt conveyor 1, so as to adjust the paving thickness of the powder at the bottom of the box body 4. During the adjustment process, the spring 129 pushes the adjusting plate 125 against the fixed limiting member 126 to ensure the vertical movement of the adjusting plate 125.

[0061] As Figure 5 shown, at the end of the lower belt of the lower net belt conveyor 1, there is a driving wheel 1b. At the driving wheel 1b, there is a detachably connected pressing plate 1c. The pressing plate 1c has an arc-shaped part concentric with the driving wheel 1b. The arc-shaped part plays a role in reversing the powder. If there is too much powder conveyed by the lower belt, it may cause the lower net belt conveyor 1 to be overloaded. At this time, the pressing plate 1c is removed to clean the accumulated material and avoid overload. At the driving wheel 1b, there is also a comb plate 1d along the width direction of the lower net belt conveyor 1. If the conveyed powder is too thick, the comb plate 1d scrapes off some powder to control the powder thickness.

[0062] As Figure 8 and Figure 9As shown together, the powder spreading device 2 includes a lower powder storage tank 21 and a powder spreading screw conveyor 22 arranged along the width direction of the lower mesh belt conveyor 1. The lower powder storage tank 21 is in a conical shape with the top opening larger than the lower opening. The top opening is the feed inlet, and the lower opening is the discharge outlet. The discharge outlet is in the shape of a long hole arranged along the width direction of the lower mesh belt conveyor 1, ensuring uniform discharge. The powder spreading screw conveyor 22 is arranged opposite to the discharge outlet. When the powder spreading screw conveyor 22 operates, the powder falling from the discharge outlet is evenly arranged along the width direction of the lower mesh belt conveyor 1.

[0063] A powder quantity detection component 23 for detecting the powder quantity in the lower powder storage tank 21 is provided on the lower powder storage tank 21. The lower powder storage tank 21 is replenished with powder by a feeding machine. When the powder quantity detection component 23 detects that the powder quantity in the lower powder storage tank is excessive, the feeding machine stops replenishing. The powder quantity detection component 23 is preferably an optoelectronic sensor or a proximity switch, etc.

[0064] As Figure 10 and Figure 11 As shown together, the powder lifting device is preferably a vertically arranged lifting screw conveyor 5. The feed inlet of the lifting screw conveyor 5 communicates with the discharge outlet of the powder spreading screw conveyor 22, and the discharge outlet of the lifting screw conveyor 5 communicates with the upper powder storage tank 9. The excess powder after the powder spreading device 2 spreads the powder is lifted to the upper powder storage tank 9 by the lifting screw conveyor 5.

[0065] The upper mesh belt conveyor 6 is inclined, and the end for conveying powder to the powder sprinkling mesh belt conveyor 10 is lower than the other end, facilitating the conveying of powder. When conveying powder to the powder sprinkling mesh belt conveyor 10, the powder is supported by the upper mesh belt support plate 61.

[0066] The coating thicknesses of different raw materials 13 are different. In this application, a powder thickness adjusting device 12 is provided above the upper belt of the upper mesh belt conveyor 6 to adjust the powder quantity conveyed for different raw materials 13, thereby adjusting the coating thickness.

[0067] A powder storage control device 8 is provided above the upper belt of the upper mesh belt conveyor 6. The powder storage control device 8 includes a rotating roller 81, a floating frame 82, and an angle detection component. The rotating roller 81 is rotatably installed on the floating frame 82, and the rotating roller 81 is supported on the upper belt of the upper mesh belt conveyor 6. The floating frame 82 is rotatably installed in the upper powder storage tank 9, and the angle detection component is used to detect the angle of the floating frame. In the illustrated embodiment, the angle detection component is preferably a servo motor, and the floating frame 82 is connected to the motor shaft of the servo motor. By utilizing the function of the servo motor to detect the rotation angle of the motor shaft, the current angle of the floating frame 82 is detected in real time. In addition to the servo motor, an angle sensor can also be used.

[0068] When the upper web conveyor 6 is working, the upper web pallet 61 supports the powder material with a certain thickness. The powder thickness supports the rotating roller 81, and the rotating roller 81 moves up and down according to the different powder thicknesses, thereby driving the floating frame 82 to swing up and down. When the angle detection component detects that the angle of the floating frame 82 is lower than the set angle, it indicates that the amount of circulating powder is insufficient. At this time, the feeder replenishes the lower powder storage tank 21.

[0069] The powder spreading web conveyor 10 is arranged along the width direction of the lower web conveyor 1 to evenly spread powder on the lower web conveyor 1, ensuring the consistency of the powder coating on the top and the periphery of each raw material 13. The two ends of the powder spreading web conveyor 10 are respectively provided with return channels 101, and the two return channels 101 are respectively located on both sides of the lower web conveyor 1. When spreading powder, the excess powder is conveyed downward to the bottom of the box body 4 through the two return channels 101, realizing the cyclic flow and utilization of the powder material.

[0070] In the illustrated embodiment, the feeder is preferably a vacuum feeder 7. The vacuum feeder 7, the powder amount detection component 23, and the servo motor are all electrically connected to the control panel 3 and form a closed-loop control for powder replenishment, eliminating the need for manual observation of powder replenishment, enabling timely powder replenishment, and avoiding the production of substandard products.

[0071] As Figure 13 shown, a pressure roller device 14 is provided above the upper belt of the lower web conveyor 1;

[0072] The pressure roller device 14 includes a pressure roller frame 141, a pressure roller 142, an eccentric wheel 143, a counterweight 144, a handle 145, an elastic plunger 146, and an arc-shaped hole plate 147. The middle of the pressure roller frame 141 is rotatably installed (the rotation center is B), the pressure roller 142 is rotatably installed at one end of the pressure roller frame 141, the eccentric wheel 143 is rotatably installed (the rotation center is C) above the other end of the pressure roller frame 141 and abuts against the other end of the pressure roller frame 141, the counterweight 144 is fixed to the other end of the pressure roller frame 141 for balancing the weight of the pressure roller 142, the handle 145 is fixed to the eccentric wheel 143, the elastic plunger 146 is installed on the handle 145, and the arc-shaped hole plate 147 is provided with a plurality of positioning holes 148 that cooperate with the elastic plunger 146. The plurality of positioning holes 148 are circumferentially distributed along the rotation center of the eccentric wheel 143.

[0073] After the raw material 13 is spread with powder by the powder spreading web conveyor 10, the floating powder attached to the surface needs to be compacted. When the raw material 13 passes through the pressure roller 142, it is rolled by the pressure roller 142, and the floating powder on the surface is compacted. Different raw materials 13 have different heights, and it is necessary to adjust the height of the pressure roller 142 to match different raw materials 13. Rotate the handle 145, and the handle 145 drives the eccentric wheel 143 to rotate around point C. Other positions of the eccentric wheel 143 contact the other end of the pressure roller frame 141, prompting the pressure roller frame 141 to rotate around point B, changing the height of the pressure roller 142, so as to meet the requirements for compacting the floating powder of different raw materials 13.

[0074] Inside the box body 4, there is a finished product conveyor 11 with one end extending out of the box body 4. The finished product conveyor 11 is used to receive the raw material 13 after being coated with powder on the lower net belt conveyor 1 and output it.

[0075] As Figure 13 shown, after the raw material 13 is rolled by the pressure roller 142, there are still uncompacted floating powders, and the floating powders need to be cleaned. Below the upper belt of the finished product conveyor 11, there is an upper blowing device 15 arranged along the width direction of the finished product conveyor 11. The upper blowing device 15 includes an upper blowing air pipe, and the upper blowing air pipe is provided with a plurality of upper blowing air outlets; above the upper belt of the finished product conveyor 11, there is a lower blowing device 16 arranged along the width direction of the finished product conveyor 11. The lower blowing device 16 includes a lower blowing air pipe, and the lower blowing air pipe is provided with a plurality of lower blowing air outlets. When the raw material 13 passes through the upper blowing air pipe, the raw material 13 is blown by the air blown upward from the upper blowing air outlets to clean the floating powders at the bottom. When the raw material 13 passes through the lower blowing air pipe, the raw material 13 is blown by the air blown downward from the lower blowing air outlets to clean the floating powders at the top.

[0076] As Figure 14 shown, in order to thoroughly clean the floating powders, a vibration device 17 is arranged above the upper belt of the finished product conveyor 11. The vibration device 17 includes a vibration shaft 171 driven by a motor to rotate and a plurality of vibration blocks 172 arranged on the vibration shaft 171. In the illustrated embodiment, the vibration blocks 172 are preferably square blocks, and can also be eccentric wheels or elliptical blocks, etc. When the motor drives the vibration shaft 171 to rotate, the vibration blocks 172 push the upper belt of the finished product conveyor 11 to float up and down, thereby driving the raw material 13 to vibrate up and down, and vibrating off the attached floating powders.

[0077] Inside the box body 4, there are a front air suction device 18 and a rear air suction device 19. The front air suction device 18 is arranged at the discharge port of the box body 4 and is used to absorb the floating powder materials to avoid dust pollution caused by the overflow of floating powders. The rear air suction device 19 is arranged at the rear of the box body 4 and is used to absorb the floating powder materials.

[0078] Box doors 41 are respectively arranged on the front and rear sides of the box body 4. When the raw material 13 is coated with powder, the box doors 41 are closed; when the box body 4 is cleaned or maintained, the box doors 41 are opened to facilitate the cleaning and maintenance of the inside of the box body 4.

[0079] The above is an example of the best implementation mode of the present invention, and the parts not described in detail are all common general knowledge of those of ordinary skill in the art. The protection scope of the present invention is subject to the content of the claims, and any equivalent transformation based on the technical inspiration of the present invention is also within the protection scope of the present invention.

Claims

1. Automatic powder coating machine, characterized in that: include: A box body and a powder lifting device, wherein the box body is provided with a lower mesh belt conveyor, an upper mesh belt conveyor, an upper powder storage box, a powder spreading mesh belt conveyor and a finished product conveyor; The lower belt of the lower mesh belt conveyor is close to the bottom of the box body, and a powder distribution device for evenly distributing powder along the width direction of the lower mesh belt conveyor is provided above the lower belt of the lower mesh belt conveyor, and a lower mesh belt support plate is provided below the upper belt of the lower mesh belt conveyor and below a transition belt between the upper belt and the lower belt of the lower mesh belt conveyor for transporting powder upward; The powder lifting device is used to lift the remaining powder after the powder distributing device distributes the powder into the upper powder storage box; The upper belt conveyor is located at the discharge port of the upper powder storage box, and is used to receive the powder output from the upper powder storage box and convey it to the powder spreading belt conveyor. An upper belt support plate is provided below the upper belt of the upper belt conveyor. The powder spreading mesh belt conveyor is located below the discharge end of the upper mesh belt conveyor and above the lower mesh belt conveyor, and is used to evenly spread the received powder toward the lower mesh belt conveyor; During the process of the lower mesh belt conveyor transporting raw materials, the powder spreading mesh belt conveyor is used to spread powder on the top and sides of the raw materials to coat the top and sides of the raw materials with powder, and the powder on the lower mesh belt support plate is used to coat the bottom of the raw materials with powder.

2. The automatic powder coating machine according to claim 1, characterized in that: Along the running direction of the lower mesh belt conveyor, the downstream end of the upper belt of the lower mesh belt conveyor grows out of the lower mesh belt supporting plate.

3. The automatic powder coating machine according to claim 1, characterized in that: The powder distribution device comprises a lower powder storage box and a powder distribution screw conveyor arranged along the width direction of the lower mesh belt conveyor.

4. The automatic powder coating machine according to claim 3, characterized in that: The lower powder storage box is provided with a powder quantity detection component for detecting the amount of powder in the lower powder storage box. The lower powder storage box is replenished by a feeder. When the powder quantity detection component detects that there is too much powder in the lower powder storage box, the feeder stops replenishing.

5. The automatic powder coating machine according to claim 3, characterized in that: The powder lifting device comprises a vertically arranged lifting screw conveyor, the feed port of the lifting screw conveyor is communicated with the discharge port of the powder distribution screw conveyor, and the discharge port of the lifting screw conveyor is communicated with the upper powder storage box.

6. The automatic powder coating machine according to claim 4, characterized in that: A powder storage control device is provided above the upper belt of the upper belt conveyor; The powder storage control device comprises a roller, a floating frame and an angle detection member, wherein the roller is rotatably mounted on the floating frame, the roller is supported on the upper belt conveyor, the floating frame is rotatably mounted in the upper powder storage box, and the angle detection member is used to detect the angle of the floating frame; When the angle detection member detects that the angle of the floating frame is lower than a set angle, the loader replenishes the lower powder storage box.

7. The automatic powder coating machine according to claim 1, characterized in that: Powder thickness adjusting devices are respectively provided above the lower belt of the powder distribution mesh belt conveyor and above the upper belt of the net-mounting belt conveyor.

8. The automatic powder coating machine according to claim 7, characterized in that: The powder thickness adjustment device includes an electric actuator, a rotating shaft, a lever, a limit block, an adjustment plate, an elastic component and a fixed limit piece. The electric actuator drives the rotating shaft to rotate. One end of the lever is fixed to the rotating shaft, and the other end is provided with a ball head. Two limit blocks are provided. The ball head is located between the two limit blocks and forms a ball joint structure with the two limit blocks. The two limit blocks are fixed on the adjustment plate. The elastic component pushes the adjustment plate to rest against the fixed limit piece. The fixed limit piece is vertically arranged.

9. The automatic powder coating machine according to claim 1, characterized in that: The powder sprinkling mesh belt conveyor is arranged along the width direction of the lower mesh belt conveyor, and return channels are respectively provided at both ends of the powder sprinkling mesh belt conveyor, and the two return channels are respectively located on both sides of the lower mesh belt conveyor.

10. The automatic powder coating machine according to claim 1, characterized in that: A pressure roller device is provided above the upper belt of the lower mesh belt conveyor; The pressing roller device includes a pressing roller frame, a pressing roller, an eccentric wheel, a counterweight, a handle, an elastic plunger and an arc-shaped orifice plate. The middle part of the pressing roller frame is rotatably installed, the pressing roller is rotatably installed at one end of the pressing roller frame, the eccentric wheel is rotatably installed above the other end of the pressing roller frame and abuts against the other end of the pressing roller frame, the counterweight is fixed to the other end of the pressing roller frame, the handle is fixed to the eccentric wheel, the elastic plunger is installed on the handle, and the arc-shaped orifice plate is provided with a plurality of positioning holes that cooperate with the elastic plungers, and the plurality of positioning holes are distributed circumferentially along the rotation center of the eccentric wheel.

11. The automatic powder coating machine according to claim 1, characterized in that: A finished product conveyor with one end extending out of the box body is arranged in the box body, and the finished product conveyor is used for receiving and outputting the raw materials coated with powder on the lower mesh belt conveyor.

12. The automatic powder coating machine according to claim 11, characterized in that: An upper blowing pipe is provided below the upper belt of the finished product conveyor and is arranged along the width direction of the finished product conveyor, and the upper blowing pipe is provided with a plurality of upper blowing ports; A down blowing air pipe is provided above the upper belt of the finished product conveyor and is arranged along the width direction of the finished product conveyor. The down blowing air pipe is provided with a plurality of down blowing air ports.

13. The automatic powder coating machine according to claim 11, characterized in that: A vibration device is provided above the upper belt of the finished product conveyor, and the vibration device includes a vibration shaft driven to rotate by a power unit and a plurality of vibration blocks provided on the vibration shaft.

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