A saturated polyester resin powder coating production apparatus

Abstract

This invention discloses a saturated polyester resin powder coating production equipment, specifically relating to the technical field of polyester resin production equipment. In this invention, the distributing roller rotates clockwise on the inner wall of an arc-shaped plate, causing the powder coating entering the distributing chamber to rotate along with it. After the powder coating is discharged from the distributing chamber, it continues to fill the chamber through extrusion. During distributing, three sealing plates are driven individually by three drive shafts, causing the three discharge ports to open or close according to different usage scenarios. When the sealing plates open, the powder coating falls into the corresponding discharge port. The number of rotations for each discharge is consistent, ensuring that the volume of powder coating discharged each time is as consistent as possible. By discharging from three different distributing channels, multi-point dispersion of the powder coating is achieved, ensuring uniformity of the powder coating during discharge and avoiding accumulation caused by a single discharge location, thus improving product quality.

Description

Technical Field

[0001] This invention relates to the field of polyester resin production equipment technology, specifically to a saturated polyester resin powder coating production equipment. Background Technology

[0002] Saturated polyester resin powder coating is a type of coating that uses saturated polyester resin as the main film-forming substance and is widely used in various fields such as home appliances, automobiles, and construction. In the home appliance field, it is used for spraying the outer shells of refrigerators and washing machines; in the automotive field, it is used for painting automotive parts and bodies; and in the construction field, it is used for painting metal components such as doors, windows, and railings. Powder coating has a completely different form from ordinary coatings. It exists in the state of fine powder. Because it does not use solvents, it is called powder coating. In the preparation process of powder coating, the raw materials need to be melt-crosslinked using an extruder. After being extruded by the extruder, the material needs to be pressed into sheets using a sheeting device. After the sheet products are cooled, they are then crushed, ground, and sieved to obtain the finished product.

[0003] A search revealed that the invention patent with publication number CN116175850A discloses a powder coating production equipment and process. By installing a pressing device on a pressing and crushing machine, uniform indentations are pre-pressed on the freshly rolled large sheet. In the subsequent processing, when the crushing roller hits the large sheet, the stress is concentrated, and the large sheet breaks along the indentation, thus obtaining fragments of uniform size.

[0004] In the existing solution, after the powder coating passes through the screw extruder, its discharge position is concentrated, and the discharge position is fixed each time, which easily causes the accumulation of fallen material; in addition, when producing powder coating tablets, only one thickness of tablet product can be produced, and diversified production cannot be carried out according to demand. Summary of the Invention

[0005] The purpose of this invention is to provide a saturated polyester resin powder coating production equipment to solve the problems mentioned in the background art.

[0006] The main problem solved by this invention is:

[0007] After passing through the screw extruder, the powder coating discharge position is concentrated, and the discharge position is fixed each time, which easily causes the accumulation of fallen material;

[0008] When pressing powder coatings into tablets, only one thickness of tablet product can be produced, and diversified production cannot be carried out according to demand.

[0009] This invention can be achieved through the following technical solutions:

[0010] A saturated polyester resin powder coating production device includes a screw extruder body. A feed inlet is installed at the top end of the screw extruder body, and an extrusion port is installed at the end of the screw extruder body away from the feed inlet. One end of the extrusion port is connected to an extrusion channel. A dispersion component for rolling out the powder coating is installed in the upper part of the inner cavity of the extrusion channel. The dispersion component includes an arc-shaped plate. A distribution roller concentric with the arc-shaped plate is rotatably installed inside the extrusion channel. The outer surface of the distribution roller has several distribution chambers for coating entry. Three discharge ports are provided on the surface of the arc-shaped plate, and a plug is rotatably installed inside each discharge port. The extrusion channel has two distribution plates along its inclined direction. The end of each distribution plate is aligned with the corresponding outlet hole. Adjacent distribution plates and the upper and lower distribution plates form distribution channels with the upper and lower inner walls of the extrusion channel. The bottom of the extrusion channel is provided with an alternating receiving assembly for collecting powder coatings of different thicknesses. The alternating receiving assembly is mounted on a base. The alternating receiving assembly includes two moving support plates. A pressing frame is rotatably mounted on the top end of each support plate. Flat pressing assemblies for integrating powder coatings of different thicknesses are installed on the top end of the base and the lower surface of the extrusion channel.

[0011] A further technical improvement of the present invention is that: the end of the material distribution plate and the inner wall of the extrusion channel are provided with outwardly protruding material blocking protrusions, and a drive shaft driven by a servo motor is installed at the connection between the outer end of the discharge port and the sealing plate, and the sealing plate in each discharge port is individually controlled.

[0012] A further technical improvement of the present invention is as follows: a rodless cylinder is embedded in the top surface of the base, a slide block is slidably provided on the outside of the rodless cylinder, two bearing base plates are symmetrically installed on the upper surface of the slide block, laser displacement sensors of different depths are embedded in the inner wall of the pressing frame, a fixing plate is fixedly provided at the end of the upper surface of the bearing base plate, a drive shaft driven by a servo motor is installed on the fixing plate and the bottom end of the pressing frame, a support column is installed on the side of the bottom surface of the pressing frame away from the drive shaft, and the lower end face of the support column is in contact with the top surface of the bearing base plate.

[0013] A further technical improvement of the present invention is that: both sides of the upper surface end of the tableting frame are provided with moving grooves, a linear guide rail is installed inside the moving groove, a slider is provided outside the linear guide rail that slides with the moving groove, and a cover plate is fixed to the end of the slider, the cover plate being used to block the powder tableting in the tableting frame.

[0014] A further technical improvement of the present invention is that: conveyor belts are installed on both sides of the base via conveyor frames, and a ramp is provided on the inner side of the conveyor frame at the upper edge of the conveyor belt.

[0015] A further technical improvement of the present invention is that: the flattening and pressing assembly includes a frame, a lifting plate driven by a linear cylinder is installed inside the frame, a rotary cylinder is installed in the middle of the lower surface of the lifting plate, a rotating plate is connected to the driving end of the rotary cylinder, a material spreading unit is installed on one side of the bottom surface of the rotating plate, and a pressure plate is installed on the other side of the bottom surface of the rotating plate.

[0016] A further technical improvement of the present invention is that: a T-shaped limiting block is installed on the upper surface of the rotating plate, and an annular T-groove is provided on the bottom surface of the lifting plate outside the rotating cylinder, and the annular T-groove is slidably disposed with the upper end of the limiting block.

[0017] A further technical improvement of the present invention is that: the material spreading unit includes two parallel mounting plates, the upper end surface of the mounting plates is fixed to the bottom surface of the rotating plate, a bidirectional lead screw is rotatably mounted between the two mounting plates, a sliding rod is provided on both sides of the bidirectional lead screw, the end of the sliding rod is fixed to the surface of the mounting plate, a movable sleeve plate that slides on the sliding rod is threaded onto the external thread of the bidirectional lead screw, and a vertically moving scraper is installed on the lower surface of the movable sleeve plate.

[0018] A further technical improvement of the present invention is that: the interior of the movable sleeve is configured as a cavity structure, the upper end of the scraper extends movably into the cavity of the movable sleeve, and an electric push rod for pushing the scraper is installed on the upper end face of the movable sleeve.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. In this invention, the distributing roller rotates clockwise on the inner wall of the arc-shaped plate, causing the powder coating entering the distributing chamber to rotate together. After the powder coating in the distributing chamber is discharged, it continues to fill the distributing chamber through extrusion. During distributing, the three sealing plates are driven by three drive shafts individually, so that the three discharge ports open or close according to different usage scenarios. When the sealing plate is open, the powder coating falls into the corresponding discharge port. The number of rotations for each discharge is consistent, ensuring that the volume of powder coating discharged each time is as consistent as possible. By discharging from three different distributing channels, the powder coating is dispersed at multiple points, achieving uniformity of powder coating during discharge, avoiding the accumulation of powder coating caused by a single discharge position, and improving product quality.

[0021] 2. By sliding the slide on the rodless cylinder, one tableting frame is aligned with the extrusion channel to receive material. The rodless cylinder pushes the slide to align the other tableting frame with the extrusion channel, facilitating material reception again, reducing downtime, and improving production efficiency. The first tableting frame then reaches the flattening tableting assembly for flattening and tableting. After tableting, the tableted flakes are tilted under gravity by rotating the drive shaft. Because the laser displacement sensors are set at different heights in the two tableting frames, different thicknesses of powder coating tablets are produced to meet different production needs. The different thicknesses of flake powder coating produced in the two tableting frames are tilted and conveyed by corresponding conveyor belts, realizing the conveying of two production lines, with a high degree of automation and improved production efficiency.

[0022] 3. When the material is laid flat, the two scrapers move away from each other and are pushed downward by the corresponding electric push rods. They follow the downward movement of the lifting plate and enter the inner cavity of the pressing frame on both sides. Through the rotation of the bidirectional screw, the two scrapers are driven to move closer to each other. When the powder coating in the middle of the pressing frame is concentrated, the position on both sides is low. The electric push rod drives the scrapers upward. When the powder coating on both sides is concentrated, the height of the electric push rod remains unchanged, and the material is pushed from the side to the middle to meet the different states of material laying. Attached Figure Description

[0023] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0024] Figure 1 This is a schematic diagram of the planar structure of the present invention;

[0025] Figure 2 For the present invention Figure 1 A magnified view of a section at point A in the middle;

[0026] Figure 3 For the present invention Figure 1 A magnified view of a section at point B in the middle;

[0027] Figure 4 This is a three-dimensional structural diagram of the tablet compression frame of the present invention;

[0028] Figure 5 This is a schematic diagram of the installation structure of the pressure plate and the rotating plate of the present invention;

[0029] Figure 6 This is a schematic diagram of the installation structure of the movable sleeve and the bidirectional screw of the present invention.

[0030] In the diagram: 1. Screw extruder body; 2. Feed inlet; 3. Extrusion outlet; 4. Extrusion channel; 6. Base; 7. Support plate; 8. Support column; 9. Conveyor belt; 10. Inclined plate; 11. Frame; 12. Lifting plate; 13. Distributor plate; 14. Material blocking protrusion; 15. Arc plate; 16. Discharge outlet; 18. Sealing plate; 19. Drive shaft one; 20. Distributor roller; 21. Distributor chamber; 22. Laser displacement sensor; 23. Rodless cylinder; 24. Slide seat; 25. Fixing plate; 26. Drive shaft two; 27. Pressing frame; 28. Rotary cylinder; 29. ​​Rotating plate; 30. Cover plate; 31. Moving groove; 32. Mounting plate; 33. Pressure plate; 34. Bidirectional lead screw; 35. Slide rod; 36. Moving sleeve plate; 37. Scraper. Detailed Implementation

[0031] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0032] Example 1

[0033] Please see Figure 1 , Figure 2 and Figure 3As shown, this invention provides a saturated polyester resin powder coating production equipment, including a screw extruder body 1. A feed inlet 2 is installed at the top end of the screw extruder body 1, and an extrusion port 3 is installed at the end of the screw extruder body 1 away from the feed inlet 2. One end of the extrusion port 3 is connected to an extrusion channel 4. A dispersion component for rolling out powder coating is installed in the upper part of the inner cavity of the extrusion channel 4. The dispersion component includes an arc-shaped plate 15. A distribution roller 20, concentric with the arc-shaped plate 15, is rotatably installed inside the extrusion channel 4. The outer surface of the distribution roller 20 is provided with several distribution chambers 21 for coating entry. Three discharge ports 16 are provided on the surface of the arc-shaped plate 15. Each discharge port 16... The extrusion channel 4 is internally fitted with a rotatable sealing plate 18. Two distribution plates 13 are arranged along its inclined direction. The end of each distribution plate 13 is aligned with the corresponding outlet 16. Adjacent distribution plates 13 and the upper and lower distribution plates 13 form distribution channels with the upper and lower inner walls of the extrusion channel 4. An alternating receiving assembly for collecting powder coatings of different thicknesses is provided at the bottom of the extrusion channel 4. The alternating receiving assembly is mounted on the base 6 and includes two moving support plates 7. A pressing frame 27 is rotatably mounted on the top end of each support plate 7. A pressing frame 27 is installed on the top end of the base 6 and the lower surface of the extrusion channel 4. Before using the integrated flattening tablet assembly, following the connection method described above, first position one of the tablet frames 27 in the alternating feeding assembly directly below the extrusion channel 4. Then connect the extrusion channel 4 to the extrusion port 3. After the polyester resin powder coating is extruded through the screw extruder body 1, it enters the extrusion channel 4 through the extrusion port 3 and then enters the exposed distributing chamber 21. The distributing roller 20 rotates clockwise on the inner wall of the arc plate 15, causing the powder coating entering the distributing chamber 21 to rotate together. After the powder coating in the distributing chamber 21 is discharged, it continues to fill the distributing chamber 21 through the extrusion action. During distributing, a sealing plate 18 at the top rotates and opens, following the rotation of the distributing chamber 21. The powder coating enters the upper distribution channel through the discharge port 16. After a period of discharge, the upper sealing plate 18 closes, and the middle sealing plate 18 rotates open, allowing the powder coating to enter the middle distribution channel through the middle discharge port 16. Finally, the lower sealing plate 18 rotates open, and the other two sealing plates 18 close, allowing the powder coating to enter the lower distribution channel through the lower discharge port 16. The number of rotations during each discharge is consistent, ensuring that the volume of powder coating discharged each time is as consistent as possible. By discharging from three different distribution channels, the powder coating is dispersed at multiple points, achieving uniformity during discharge and avoiding accumulation caused by a single discharge location, thus improving product quality.

[0034] See Figure 2As shown, outwardly protruding baffles 14 are provided at the end of the material distribution plate 13 and on the inner wall of the extrusion channel 4. A drive shaft 19 driven by a servo motor is installed at the connection between the outer end of the discharge port 16 and the sealing plate 18. Each sealing plate 18 in the discharge port 16 is individually controlled. The three sealing plates 18 are driven by three drive shafts 19, so that the three discharge ports 16 open or close according to different usage scenarios. When the sealing plate 18 is open, the powder coating falls into the corresponding discharge port 16. Through the limiting effect of the baffles 14, the powder coating is guided to flow out of the three material distribution channels.

[0035] Example 2

[0036] See Figure 1 and Figure 3 As shown, a rodless cylinder 23 is embedded in the top surface of the base 6. A slide block 24 is slidably mounted on the outside of the rodless cylinder 23. Two supporting base plates 7 are symmetrically mounted on the upper surface of the slide block 24. Laser displacement sensors 22 at different depths are embedded in the inner wall of the tablet frame 27. A fixing plate 25 is fixedly mounted on the upper end of the supporting base plate 7. A drive shaft 26 driven by a servo motor 2 is mounted on the fixing plate 25 and the bottom end of the tablet frame 27. A support column 8 is mounted on the side of the bottom surface of the tablet frame 27 away from the drive shaft 26. The lower end of the support column 8 is in contact with the top surface of the supporting base plate 7. Initially, the tablet frame 27 and the supporting base plate 7 are in a parallel state. The other end of the tablet frame 27 is supported by the support column 8. By sliding the slide block 24 on the rodless cylinder 23, one tablet frame 27 is driven to move with the extrusion channel 4. Alignment is achieved by using a laser displacement sensor 22 within the pressing frame 27 to emit a laser beam and receive its reflected light to measure the distance to the target object. As the powder coating falls in, the sensor can measure the surface height change in real time. When one pressing frame 27 reaches the powder coating's bearing position, a rodless cylinder 23 pushes a slide 24 to align the other pressing frame 27 with the extrusion channel 4, facilitating re-feeding, reducing downtime, and improving production efficiency. The first pressing frame 27 then reaches the flat pressing assembly for flattening and pressing. After pressing, the drive shaft 26 rotates 180 degrees, and under gravity, the pressed sheet-like powder coating is tilted out. Because the laser displacement sensor 22 is set at different heights within the two pressing frames 27, powder coating sheets of different thicknesses can be produced to meet different production needs.

[0037] See Figure 4As shown, both sides of the upper surface end of the tablet frame 27 are provided with moving grooves 31. A linear guide rail is installed inside the moving groove 31, and a slider that slides with the moving groove 31 is provided outside the linear guide rail. A cover plate 30 is fixed to the end of the slider. The cover plate 30 is used to block the powder tableting in the tablet frame 27. In use, the powder coating has been tableted. The two cover plates 30 are driven to move closer to each other by the linear guide rail in the moving groove 31 to block the upper part of the tablet frame 27. Then, the driving force of the second drive shaft 26 is used to rotate the tablet frame 27 as a whole by 180 degrees. At this time, the flake powder coating is facing downward. Then the two cover plates 30 are opened and the flake powder coating falls off under gravity.

[0038] See Figure 1 As shown, conveyor belts 9 are installed on both sides of the base 6 via conveyor frames. Inclined plates 10 are provided on the inner side of the conveyor frames and at the upper edge of the conveyor belts 9. Since there are two pressing frames 27, the sheet powder coatings of different thicknesses produced in the two pressing frames 27 are tilted and conveyed by the adjacent conveyor belts 9, realizing the conveying of two production lines, with a high degree of automation and improved production efficiency.

[0039] Example 3

[0040] See Figure 1 and Figure 5 As shown, the flattening and pressing assembly includes a frame 11. Inside the frame 11, a lifting plate 12 driven by a linear cylinder is installed. A rotary cylinder 28 is installed in the middle of the lower surface of the lifting plate 12. The drive end of the rotary cylinder 28 is connected to a rotating plate 29. A material spreading unit is installed on one side of the bottom surface of the rotating plate 29, and a pressure plate 33 is installed on the other side of the bottom surface of the rotating plate 29. First, the powder coating material in the pressing frame 27 is spread and leveled by the material spreading unit to ensure the flatness of the pressed tablet. Then, after the rotating plate 29 rotates 180 degrees, the pressure plate 33 reaches the scraping position and is moved down by the lifting plate 12 to flatten the spread powder coating material to form a sheet of powder coating material.

[0041] See Figure 5 As shown, a T-shaped limiting block is installed on the upper surface of the rotating plate 29. The bottom surface of the lifting plate 12 is provided with an annular T-groove outside the rotating cylinder 28. The annular T-groove is slidably disposed with the upper end of the limiting block. When the rotating plate 29 rotates, the limiting block rotates with it and slides in the annular T-groove at the top to ensure the stability of the rotation of the rotating plate 29.

[0042] See Figure 5 and Figure 6As shown, the material spreading unit includes two parallel mounting plates 32. The upper surface of the mounting plates 32 is fixed to the bottom surface of the rotating plate 29. A bidirectional lead screw 34 is rotatably mounted between the two mounting plates 32. Slide rods 35 are provided on both sides of the bidirectional lead screw 34. The ends of the slide rods 35 are fixed to the surfaces of the mounting plates 32. A movable sleeve plate 36 that slides on the slide rods 35 is threaded onto the external thread of the bidirectional lead screw 34. A vertically moving scraper 37 is mounted on the lower surface of the movable sleeve plate 36. The interior of the movable sleeve plate 36 is configured as a cavity structure, and the upper end of the scraper 37 extends movably into the cavity of the movable sleeve plate 36. The upper end face of the movable sleeve plate 36 is equipped with an electric push rod for pushing the scraper 37 to move. During material spreading, the two scrapers 37 move away from each other and are pushed downward by the corresponding electric push rods. Following the downward movement of the lifting plate 12, they enter the inner cavity of the pressing frame 27 on both sides. Through the rotation of the bidirectional screw 34, the two scrapers 37 are driven to move closer to each other. When the powder coating in the middle of the pressing frame 27 is concentrated, the position on both sides is low. The electric push rod drives the scraper 37 upward. When the powder coating on both sides is concentrated, the height of the electric push rod remains unchanged, and the material is spread from the side to the middle, satisfying the material spreading in different states.

[0043] In use, the distributing roller 20 rotates clockwise on the inner wall of the arc plate 15, causing the powder coating entering the distributing chamber 21 to rotate together. After the powder coating in the distributing chamber 21 is discharged, it continues to fill the distributing chamber 21 through extrusion. During distributing, the three sealing plates 18 are driven individually by three drive shafts 19, so that the three discharge ports 16 open or close according to different usage scenarios. When the sealing plate 18 is open, the powder coating falls into the corresponding discharge port 16. The number of rotations for each discharge is consistent, ensuring that the volume of powder coating discharged each time is as consistent as possible. By discharging from three different distributing channels, the powder coating is dispersed at multiple points, achieving uniformity in the discharge, avoiding the accumulation of powder coating caused by a single discharge position, and improving product quality.

[0044] By sliding the slide block 24 on the rodless cylinder 23, one tableting frame 27 is aligned with the extrusion channel 4 to receive material. The rodless cylinder 23 pushes the slide block 24 to align the other tableting frame 27 with the extrusion channel 4, facilitating material reception again, reducing downtime, and improving production efficiency. The first tableting frame 27 reaches the flattening tableting assembly for flattening and tableting. After tableting, the second drive shaft 26 rotates 180 degrees, and under the action of gravity, the tableted flake powder coating can be tilted. Since the laser displacement sensor 22 is set at different heights in the two tableting frames 27, different thicknesses of powder coating tablets are produced to meet different production needs. The different thicknesses of flake powder coating produced in the two tableting frames 27 are tilted and conveyed by the corresponding conveyor belt 9, realizing the conveying of two production lines, with a high degree of automation and improved production efficiency.

[0045] When the material is laid flat, the two scrapers 37 move away from each other and are pushed downward by the corresponding electric push rods. Following the downward movement of the lifting plate 12, they enter the inner cavity of the pressing frame 27 on both sides. Through the rotation of the bidirectional screw 34, the two scrapers 37 are driven to move closer to each other. When the powder coating in the middle of the pressing frame 27 is concentrated, the position on both sides is low. The electric push rod drives the scrapers 37 upward. When the powder coating on both sides is concentrated, the height of the electric push rod remains unchanged, and the material is pushed from the side to the middle to meet the different states of material laying.

[0046] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A saturated polyester resin powder coating production equipment, comprising a screw extruder body (1), wherein a feed inlet (2) is installed at the top end of the screw extruder body (1), and an extrusion port (3) is installed at the end of the screw extruder body (1) away from the feed inlet (2), characterized in that: One end of the extrusion port (3) is connected to an extrusion channel (4). A dispersion assembly for rolling out powder coating is installed on the upper part of the inner cavity of the extrusion channel (4). The dispersion assembly includes an arc-shaped plate (15). A distribution roller (20) with the same center as the arc-shaped plate (15) is rotatably installed inside the extrusion channel (4). The outer surface of the distribution roller (20) is provided with several distribution chambers (21) for coating entry. Three discharge ports (16) are provided on the surface of the arc-shaped plate (15). The discharge port (16) is rotatably installed with a sealing plate (18). The extrusion channel (4) is provided with two material distribution plates (13) along its inclined direction. The end of each material distribution plate (13) is aligned with the hole of the corresponding discharge port (16). The two adjacent material distribution plates (13) and the upper and lower material distribution plates (13) form a material distribution channel with the upper and lower inner walls of the extrusion channel (4). The bottom end of the extrusion channel (4) is provided with an alternating material receiving component for carrying and collecting powder coatings of different thicknesses. An alternating feeding assembly is installed on a base (6). The alternating feeding assembly includes two moving bearing base plates (7). Each bearing base plate (7) has a pressing frame (27) rotatably installed on its top end. The top end of the base (6) and the lower surface of the extrusion channel (4) are both equipped with flat pressing assemblies that integrate powder coatings of different thicknesses. A rodless cylinder (23) is embedded in the top surface of the base (6). A slide block (24) is slidably provided on the outside of the rodless cylinder (23). Two bearing base plates (7) are symmetrically installed on the upper surface of the slide block (24). Laser displacement sensors (22) of different depths are embedded in the inner wall of the pressing frame (27). A fixing plate (25) is fixedly provided at the end of the upper surface of the bearing base plate (7). A drive shaft (26) driven by a servo motor is installed on the bottom end of the fixing plate (25) and the bottom end of the pressing frame (27). A support column (8) is installed on the side of the bottom surface of the pressing frame (27) away from the drive shaft (26). The lower end face of the support column (8) is in contact with the top surface of the bearing base plate (7). The upper surface of the tablet frame (27) is provided with moving grooves (31) on both sides. A linear guide rail is installed inside the moving groove (31), and a slider that slides with the moving groove (31) is provided outside the linear guide rail. A cover plate (30) is fixed at the end of the slider. The cover plate (30) is used to block the powder tablets in the tablet frame (27). The flattening and pressing assembly includes a frame (11), inside which a lifting plate (12) driven by a linear cylinder is installed. A rotary cylinder (28) is installed in the middle of the lower surface of the lifting plate (12). A rotating plate (29) is connected to the driving end of the rotary cylinder (28). A material spreading unit is installed on one side of the bottom surface of the rotating plate (29), and a pressure plate (33) is installed on the other side of the bottom surface of the rotating plate (29).

2. The saturated polyester resin powder coating production equipment according to claim 1, characterized in that, The end of the material distribution plate (13) and the inner wall of the extrusion channel (4) are provided with outwardly protruding material blocking protrusions (14). The outer end of the discharge port (16) and the connection between the sealing plate (18) are equipped with a drive shaft (19) driven by a servo motor. The sealing plate (18) in each discharge port (16) is individually controlled.

3. The saturated polyester resin powder coating production equipment according to claim 1, characterized in that, Both sides of the base (6) are equipped with conveyor belts (9) via conveyor frames, and the inner side of the conveyor frame and the upper edge of the conveyor belt (9) are provided with ramps (10).

4. The saturated polyester resin powder coating production equipment according to claim 1, characterized in that, The upper surface of the rotating plate (29) is equipped with a T-shaped limiting block, and the bottom surface of the lifting plate (12) is provided with an annular T-groove outside the rotating cylinder (28). The annular T-groove is slidably disposed with the upper end of the limiting block.

5. The saturated polyester resin powder coating production equipment according to claim 1, characterized in that, The material spreading unit includes two parallel mounting plates (32). The upper end face of the mounting plate (32) is fixed to the bottom face of the rotating plate (29). A bidirectional lead screw (34) is rotatably mounted between the two mounting plates (32). A slide rod (35) is provided on both sides of the bidirectional lead screw (34). The end of the slide rod (35) is fixed to the surface of the mounting plate (32). A movable sleeve plate (36) that slides on the slide rod (35) is threaded onto the external thread of the bidirectional lead screw (34). A vertically moving scraper (37) is installed on the lower surface of the movable sleeve plate (36).

6. The saturated polyester resin powder coating production equipment according to claim 5, characterized in that, The interior of the movable sleeve (36) is configured as a cavity structure, and the upper end of the scraper (37) extends movably into the cavity of the movable sleeve (36). An electric push rod for pushing the scraper (37) is installed on the upper end face of the movable sleeve (36).

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