Powder coating production apparatus and process thereof

Abstract

The present application relates to the technical field of powder coating processing, in particular to a powder coating production equipment and process thereof, which comprises a rack, a track installed on the rack, a press roller installed on the rack at one end of the track, a cooling assembly installed on the rack, and a crushing roller installed on the rack at the other end of the track. Further comprising a profile roller movably installed on the rack and a driving assembly installed on the profile roller. The process thereof is to use the principle of stress concentration to make the large material sheet rolled and shaped by the press roller form specific size of broken pieces during rough crushing, thereby improving the production efficiency of the powder coating. Meanwhile, a powder coating production equipment is provided for the process, a profile device is installed on the sheet crushing machine to pre-press uniform indentations on the just rolled large material sheet, and then in the subsequent processing process, the large material sheet is broken along the indentations due to stress concentration when the crushing roller hits the large material sheet, thereby obtaining broken pieces of uniform size.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of powder coating processing, in particular to a powder coating production equipment and process. BACKGROUND

[0002] Powder coating is a solid powder-like synthetic resin coating composed of solid resin and pigment, filler and additive, etc. It has the characteristics of no solvent pollution, 100% film forming, low energy consumption and safe storage and transportation.

[0003] The powder coating production process mainly includes raw material preparation, premixing, melting extrusion, cooling and tabletting, coarse crushing, fine crushing and sieving and packaging. The main equipment for powder coating production includes a mixer, a melting extruder, a tablet crusher, an air classification grinder and a sieving machine. In the existing process, the particle size of the powder coating particles is in the range of 10-70 μm, which is considered to be qualified.

[0004] The tablet crusher rolls the extruded molten material into large tablets with a thickness of 2-3 mm through the counter-rotating pressure rollers, cools them to room temperature, and delivers them to the crushing device, which then breaks the large tablets into pieces by the crushing rollers. The pieces are fine crushed by the air classification grinder (ACM), which rotates the grinding disc and causes the pieces to collide with the surface of the grinder or with each other. The main crushing action in the air classifier mill is the impact or friction between the particles, which completes the fine crushing.

[0005] However, when the tablet crusher performs coarse crushing, the crushing rollers rotate and drive the rollers to hit the tablets, which are broken into pieces of uneven size. The uneven size of the coarse crushed pieces can cause the width of the smaller pieces to collide with the width of the larger pieces during fine crushing. The larger pieces are difficult to be broken by other small pieces and can only be broken by colliding with the surface of the grinder, resulting in low grinding efficiency and long grinding time.

[0006] The existing solution is to set a secondary crushing device below the crushing roller to re-crush the pieces to ensure that no pieces with excessive width are produced, thereby reducing the fine crushing time. However, this solution can re-crush pieces with appropriate width, resulting in too small pieces. During the fine crushing of the too small pieces, more particles with a diameter less than 10 μm are produced by the impact of large pieces, resulting in a decrease in the yield of qualified particles with a size of 10-70 μm, and a decrease in the product qualification rate.

[0007] Therefore, a powder coating production equipment is proposed. The equipment is provided with a pressing roller installed on the tablet crusher, which can press the tablets into pieces of uniform size. Then, the crushing roller hits the tablets at the indentation position to crush the tablets into pieces of uniform size, thereby reducing the fine crushing time in the production of powder coating and improving the production efficiency. SUMMARY

[0008] The present application aims to provide a powder coating production equipment and a process thereof, in which the principle of stress concentration is used to make the large pieces formed by the rolling of the compression roller to form uniform and specific size pieces when being coarsely broken by the breaking roller, thereby improving the production efficiency of the powder coating.

[0009] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0010] A powder coating production equipment comprises a frame, a conveying assembly installed on the frame, the conveying assembly comprising a track installed on the frame, a compression roller installed on one end of the track, a cooling assembly installed on the frame, a breaking roller installed on the other end of the track, and a plurality of breaking blades provided on the breaking roller.

[0011] A support is fixedly installed on the frame, a rotating shaft one is fixedly installed on the support, and a compression roller is movably installed on the rotating shaft one.

[0012] A driving assembly is installed on the compression roller, the driving assembly drives the compression roller to rotate, and is used to drive the compression roller to roll and press on the powder coating piece.

[0013] A prevent-sticking assembly is provided on the outer circumference of the compression roller, and is used to prevent the piece from sticking to the compression roller during the rotation of the compression roller.

[0014] Based on the above content, the working principle is that the extruded molten material is rolled into a large piece by the compression roller, at this time, the large piece is in a preliminary shaping state but is relatively soft, the compression roller rotates under the action of the driving device and rolls on the large piece to pre-press the piece into a piece type with the same area, but the large piece is not completely pressed off, and the rolling trace is formed on the piece. After pre-pressing, the piece is continuously conveyed by the track, the piece is completely cooled by the cooling fan, and then is broken by the breaking roller, the breaking blades on the breaking machine hit the piece, stress concentration occurs at the trace of the piece, the piece is broken at the trace, thereby realizing that the broken pieces are uniformly broken. The prevent-sticking device falls off the stuck piece on the compression device, prevents the large piece from sticking to the compression device and rotating with the compression device, and affects the compression of the next round.

[0015] Preferably, the plurality of indentation blades are evenly arranged on the cylindrical surface of the profiling roller, and the plurality of indentation blades form a mesh structure to divide the cylindrical surface of the profiling roller into a plurality of areas of the same size.

[0016] Through the design, the driving assembly drives the profiling roller to rotate, so that the profiling roller rolls on the material sheet, and the indentation blades evenly arranged on the cylindrical surface of the profiling roller roll on the material sheet, and the material sheet is pre-pressed into a sheet type with the same area. The distance between the profiling roller and the track is set, so that the large material sheet is not completely broken during pre-pressing, and a sheet type with the same area is pre-pressed, but the large material sheet is not completely broken, and the indentation blades roll on the material sheet. The crushing roller is used for crushing, and the crushing blades on the crusher hit the material sheet, stress concentration occurs at the indentation of the material sheet, and the material sheet is broken from the indentation, so that the width of the broken pieces is uniform. By adjusting the distance between the indentation blades, the size of the pre-pressed sheet type is changed, and the size of the broken pieces produced by crushing is changed.

[0017] Preferably, the driving assembly comprises a driving wheel mounted on the roller, and a driven wheel fixedly mounted on the profiling roller, wherein the driving wheel and the driven wheel are of the same size, and the diameter of the profiling roller is equal to the diameter of the roller. A conveyor belt is mounted on the driving wheel and the driven wheel, and the conveyor belt synchronously drives the profiling roller and the roller to rotate.

[0018] During the process of pressing the small material sheet on the material sheet by the roller, if the rotation speed of the roller is faster than the conveying speed of the material sheet, the indentation blades on the profiling roller will move relatively fast on the material sheet during pre-pressing, and the indentation blades will scratch the material sheet. If the rotation speed of the roller is slower than the conveying speed of the material sheet, the indentation blades on the profiling roller will move relatively slowly on the material sheet, and the indentation blades will accumulate the material sheet. In both cases, the material sheet cannot be pre-pressed into a sheet type with the same area.

[0019] The working principle is that the roller drives the driving wheel to rotate, the driving wheel drives the driven wheel to rotate through the conveyor belt, and the driven wheel drives the profiling roller to rotate, so that the profiling roller and the roller rotate at the same speed. Through this design, since the driving wheel and the driven wheel are of the same size, the rotation speed of the profiling roller is the same as that of the roller. Therefore, the output speed of the material sheet is the same as the profiling speed, so that the output speed of the material sheet is different from the profiling speed, which cannot pre-press the material sheet into a sheet type with the same area during pre-pressing, and the design effect cannot be achieved.

[0020] It should be additionally pointed out that using a conveyor belt as a driving scheme for the profiling roller has both advantages and disadvantages. The advantages are stable transmission, low noise, low price, and easy installation and replacement. The disadvantage is that the service life of the conveyor belt is short, and the transmission is elastic and slippery.

[0021] If the conveyor belt is not used, the chain drive can be used, which has the advantages of high transmission efficiency, no relative sliding, and can be used in environments with high temperature, high humidity and high dust; the disadvantages are that it has noise during operation, high manufacturing cost and high installation matching degree.

[0022] In addition, another motor can be provided, which has the advantages of not reducing the energy loss of the pressure roller movement, and the disadvantages of occupying a large space, consuming a lot of energy, and requiring speed synchronization.

[0023] In combination with the above three descriptions, in actual application, the user should consider the actual working conditions, the advantages and disadvantages, and determine the driving mode of the profiling roller.

[0024] Preferably, the anti-staining assembly includes roller holes opened in the mesh structure formed by the plurality of indentation blades, springs fixedly installed in the plurality of roller holes, a top rod installed at the other end of the spring, and a cam provided on the shaft for extruding the top rod.

[0025] When the profiling roller is profiling the sheet, the sheet is in a preliminary shaping state, but is relatively soft, and has a certain viscosity, which can block the roller hole or stick to the profiling roller. Through this design, after the sheet is pre-pressed, the top rod in the roller hole moves to the protruding part of the cam, the top rod in the roller hole is extruded by the cam, the top rod pushes out the sheet in the roller hole, at the same time, the top rod extrudes the spring in the roller hole, the spring in the roller hole shrinks, the profiling roller continues to rotate, the top rod is no longer extruded by the cam, the spring in the roller hole is no longer pressed by the top rod, the spring in the roller hole recovers, and the top rod returns to the initial position, so as not to affect the profiling effect of the next time.

[0026] Preferably, a plurality of crushing blades are uniformly arranged on the cylindrical surface of the crushing roller, and the crushing blades are arranged at an axial interval equal to the axial interval of the indentation blades. With the existing crushing roller, even if the sheet has been pre-pressed to form deep indentations, the roller on the outer circumference of the crushing roller will hit and cause the sheet to break at a position other than the specified position, resulting in large or small broken pieces.

[0027] Through this design, the crushing blades on the crushing roller hit the indentation on the sheet, and the sheet is broken at the indentation to form broken pieces of the same area, so that when the crushing roller is crushing, the crushing blades on the crushing roller can hit the indentation on the sheet, increasing the probability of breaking the sheet at the indentation, thereby increasing the rate of crushing the sheet with uniform width.

[0028] During production, the material sheet may be laterally offset on the track, so that the crushing blades on the crushing roller cannot hit the indentation correctly. The material sheet can be adjusted by installing an adjusting device on the frame or manually. The adjusting device includes rollers installed on both sides of the track. When the material sheet tends to be offset, the rollers apply a lateral force to the material sheet, so as to prevent the material sheet from being laterally offset.

[0029] Preferably, an arc-shaped groove for installing the rotating shaft is formed on the bracket, and the center of the arc-shaped groove is the center of the driving wheel. The bracket is provided with a lifting device. The lifting device comprises a top block installed below the rotating shaft, a threaded hole formed below the top block, a screw rod installed in the threaded hole, and an adjusting knob arranged at the lower end of the screw rod.

[0030] In the production process, the thickness of the material sheet needs to be adjusted due to the change of the production temperature and the type of paint. For example, in winter, the ambient temperature is low, which accelerates the cooling of the material sheet. Therefore, the distance between the pressure rollers needs to be adjusted to increase the thickness of the material sheet and the cooling time of the material sheet. At this time, if the height of the pressure roller is not increased, the ratio of the indentation depth to the thickness of the material sheet will be too large when the pressure roller pre-presses the material sheet, which will cause the material sheet to be crushed by the pressure roller. When the material sheet is pre-pressed, the material sheet is broken into multiple pieces of different sizes, so that the design effect cannot be achieved.

[0031] In summer, the ambient temperature is high, which slows down the cooling of the material sheet. Therefore, the distance between the pressure rollers needs to be adjusted to reduce the thickness of the material sheet and the cooling time of the material sheet. At this time, if the height of the pressure roller is not reduced, the indentation blades cannot contact the material sheet, which will cause the pressure roller to fail to pre-press the same area on the material sheet, so that the design effect of the present application cannot be achieved.

[0032] Through this design, the adjusting knob is rotated, the screw rod moves upward, the top block is pushed upward, the rotating shaft moves upward along the arc-shaped groove, the pressure roller is raised, and the pressure roller moves away from the material sheet. In the opposite direction, the knob is rotated, the screw rod moves downward, the top block moves downward, the top block pushes the rotating shaft to move downward along the arc-shaped groove, so that the pressure roller falls and moves close to the material sheet. Thus, the indentation depth can be adjusted according to the production needs. It is worth noting that if the arc-shaped groove is not installed or the center of the arc-shaped groove is not located at the center of the driving wheel, the distance between the upper end of the pressure roller and the driving wheel on the pressure roller will increase, the conveyor belt will be tightened, the worker will have a large resistance when rotating the adjusting knob, and the conveyor belt will be loose after a long time of use, which will cause the pressure roller and the pressure roller to be out of sync, so that the design effect cannot be achieved.

[0033] Preferably, the rack is provided with a scraper capable of cooperating with the ejector rod to scrape off the material sheet.

[0034] During the profiling process, even if the ejector rod in the roller hole ejects the material sheet blocked in the roller hole, the material sheet may still stick to the ejector rod, resulting in poor anti-sticking effect of the anti-sticking assembly. Through this design, after the profiling roller pre-presses the material sheet, the profiling roller continues to rotate, driving the material sheet stuck to the profiling roller to rotate, and when passing through the scraper, the scraper scrapes off the material sheet stuck to the profiling roller due to the small distance between the scraper and the profiling roller. Meanwhile, the scraper can cooperate with the ejector rod to eject the material sheet blocked in the roller hole, and the scraper scrapes off the material sheet stuck to the ejector rod. Thus, the material sheet stuck to the ejector rod is avoided, and the roller hole is prevented from being blocked.

[0035] Preferably, the profiling roller is provided with a protective cover, and the protective cover is provided with a lifting adjustment opening and a scraper adjustment opening at both ends. The profiling roller is a rotating device, and the hand of a worker may be clamped by the profiling roller, causing the worker to be injured. Through this design, the worker can avoid contacting the profiling roller during production, thereby preventing the worker from being injured. The worker can adjust the lifting knob through the adjustment opening one and the adjustment opening two provided on the protective cover. The adjustment opening one is used for conveniently adjusting the lifting knob, and the adjustment opening two is used for adjusting the position of the scraper. Thus, the worker can control the lifting of the profiling roller and the position of the scraper through the lifting knob without disassembling the protective cover.

[0036] Preferably, a plurality of rollers are arranged below the track covered by the pressing plate. When the profiling roller rolls the material sheet, the material sheet extrudes the track, the track is depressed downward, the track is tightened, the track conveying is broken, and the equipment conveying assembly is damaged. Through this design, the rollers are arranged below the track. When the track is deformed and extruded by the profiling roller, the rollers provide upward supporting force to prevent the track from being depressed, thereby avoiding deformation of the pressing plate, tightening of the track, and breakage of the track conveying.

[0037] Based on the above technical scheme, the present application provides a powder coating production process, and the process steps include:

[0038] S1: weighing and proportioning the raw materials required for the powder coating;

[0039] S2: pre-mixing the proportioned raw materials by a mixer;

[0041] S3: heating and melting the granular raw materials by a melting extruder;

[0042] S4: rolling and rolling the molten material into a large material sheet with a thickness of 2-3 mm by a tablet press.

[0042] S5: Pre-rolling the large pieces on the large pieces on the pressure roller to pre-press the same area of the piece type;

[0043] S6: The pre-rolled large pieces are crushed by the crusher, and the crushing roller hits the indentation of the pre-pressed piece type by the pressure roller, and the piece is crushed into the same area of the broken piece;

[0044] S7: The broken pieces are finely crushed by the air classification grinder, and the qualified particles with a particle size of 10-70 μm are obtained by air classification;

[0045] S8: The finely crushed powder coating is filtered by the powder screening machine, and the usable powder coating particles are obtained.

[0046] Compared with the existing process, the stress concentration principle is used to make the large pieces rolled by the pressure roller into a shape, and the same area of the piece type is pre-rolled, and the specific size of the broken piece is formed during rough crushing, thereby reducing the fine crushing production time in the production of powder coating and improving the production efficiency.

[0047] In summary, the present application has the following advantages compared with the existing equipment:

[0048] 1. By arranging the pressure roller, the pressure roller is rolled on the piece, the roller hole arranged uniformly on the cylindrical surface of the pressure roller extrudes the piece, the same area of the piece type is pre-pressed on the piece, and the distance between the pressure roller and the track is arranged, so that the large piece is not completely broken during the pre-pressing process. Therefore, stress concentration occurs at the indentation on the piece, so that the indentation is broken during the subsequent crushing by the crushing roller, thereby realizing uniform width of the broken piece.

[0049] 2. By arranging the anti-staining assembly, after the piece is pre-pressed, the top rod in the roller hole moves to the cam protrusion part, the top rod in the roller hole is extruded by the cam, the top rod pushes out the piece in the roller hole, at the same time, the top rod extrudes the spring in the roller hole, the spring in the roller hole shrinks, the pressure roller continues to rotate, the top rod is no longer extruded by the cam, the spring in the roller hole is no longer pressed by the top rod, the spring in the roller hole recovers, and the top rod returns to the initial position, thereby not affecting the effect of the next pressure type of the roller hole.

[0050] 3. By arranging the lifting device, rotating the knob, the screw rod moves upward, the top block moves upward, the top block pushes the shaft along the arc-shaped groove upward, so that the pressure roller is lifted; in the opposite direction, the screw rod moves downward, the top block moves downward, the top block pushes the shaft along the arc-shaped groove downward, so that the pressure roller falls. Thus, the indentation depth can be adjusted according to the production needs. BRIEF DESCRIPTION OF DRAWINGS

[0051] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0052] Figure 2 is Figure 1 is a perspective enlarged view of part A in the middle;

[0053] Figure 3 is a front view of the present application;

[0054] Figure 4 is Figure 3 is an enlarged view of part B in the middle;

[0055] Figure 5 is Figure 4 is an enlarged view of part C in the middle.

[0056] In the figure: 1, frame; 2, track; 3, press roller; 4, crushing roller; 5, cooling fan; 6, profiling roller; 7, conveyor belt; 8, ejector rod; 9, support; 10, scraper; 11, protective cover; 12, roller; 13, roller; 401, crushing blade; 501, fan seat; 601, roller hole; 602, rotating shaft I; 603, indentation blade; 701, driving wheel; 702, driven wheel; 801, spring; 802, cam; 901, arc-shaped slot; 902, top block; 903, screw rod; 904, adjusting knob; 1101, adjusting opening I; 1102, adjusting opening II. DETAILED DESCRIPTION

[0057] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application.

[0058] Embodiment one:

[0059] Please refer to Figures 1 to 5 , which shows the first embodiment of the present application.

[0060] The extruder extrudes the molten coating material, which falls into the press roller 3 rotating in opposite directions. The press roller 3 on the frame 1 rolls the extruded molten material into large pieces. At the same time, the press roller 3 drives the driving wheel 701 to rotate, which drives the driven wheel 702 to rotate through the conveyor belt 7. The driven wheel 702 drives the profiling roller 6 to rotate at the same speed as the press roller 3. The large pieces fall into the track 2 below the press roller 3. At this time, the large pieces are in a preliminary shaping state but are relatively soft. The track 2 sends the large pieces to the bottom of the profiling roller 6. The profiling roller 6 rolls on the pieces. The multiple indentation blades 603 evenly arranged on the cylindrical surface of the profiling roller 6 indent the pieces. The pieces are pre-pressed into pieces of the same area. The distance between the profiling roller 6 and the track 2 is set so that the large pieces are not completely broken during the pre-pressing process.

[0061] When the material sheet is not cooled, the material sheet has certain viscosity, and the material sheet will block the roller hole 601 or stick to the molding roller 6. After the material sheet is pre-pressed, the ejector pin 8 in the roller hole 601 moves to the protruding part of the cam 802, the ejector pin 8 in the roller hole 601 is pressed by the cam 802, the ejector pin 8 ejects most of the material sheet in the roller hole 601, the material sheet sticking to the ejector pin 8 is scraped off by the scraper 10, at the same time, the ejector pin 8 presses the spring 801 in the roller hole 601, the spring 801 in the roller hole 601 is contracted, the molding roller 6 continues to rotate, the ejector pin 8 is no longer pressed by the cam 802, the spring 801 in the roller hole 601 is no longer pressed by the ejector pin 8, the spring 801 in the roller hole 601 is restored, and the ejector pin 8 returns to the initial position.

[0062] At this time, the molding roller 6 will exert downward pressure on the track 2, and the roller 12 will provide upward supporting force to prevent the track 2 from being depressed.

[0063] After the material sheet is pre-pressed, the material sheet is cooled by the cooling fan 5, and when the track 2 is conveyed, the material sheet is laterally offset on the track 2, and the roller 13 exerts lateral force on the material sheet to prevent the material sheet from being laterally offset. Finally, the material sheet is crushed by the crushing roller 4, and the crushing blade 401 on the crushing roller 4 hits the indentation on the material sheet, and the material sheet is broken at the indentation and is crushed into pieces with the same area.

[0064] Embodiment two:

[0065] Referring to Figures 1 to 5 , the second specific embodiment of the present application is shown, and the track 2 is in winter, and the temperature in the field is low.

[0066] When the molding roller 3 rolls the extruded molten material into a large material sheet, the cooling of the material sheet is accelerated due to the low ambient temperature, which causes the material sheet to be excessively cooled when the molding roller 6 is pre-pressed, and the hardness and brittleness of the material sheet increase, so that the molding roller 6 crushes the material sheet. When the material sheet is pre-pressed, the material sheet is broken into multiple pieces of different sizes, so that the design effect cannot be achieved.

[0067] Therefore, the distance between the molding rollers 3 is adjusted to increase the thickness of the material sheet and increase the cooling time of the material sheet. When the material sheet is pre-pressed, the material sheet is in a preliminary shaping state, but is relatively soft. At this time, the adjusting knob 904 of the rotating lifting device is rotated through the adjusting opening one 1101 on the protective cover 11, the screw rod 903 moves upward, the top block 902 is pushed upward by the screw rod 903, the top block 902 pushes the rotating shaft to move upward along the arc-shaped groove 901, the molding roller 6 is raised, and the molding roller 6 is away from the material sheet, so as to avoid that the indentation is too deep and the molding roller 6 crushes the material sheet. When the material sheet is pre-pressed, the material sheet is broken into multiple pieces of different sizes, so that the design effect cannot be achieved.

[0068] At the same time, since the profile roller 6 is raised, the scraper 10 is far away from the profile roller 6, and the scraper 10 cannot scrape off the material sheet adhered to the profile roller 6 and blocked in the roller hole 601.

[0069] At this time, the position of the scraper 10 is adjusted through the adjusting opening two 1102 on the protective cover 11, so that the scraper 10 can scrape off the material sheet adhered to the profile roller 6 and blocked in the roller hole 601.

[0070] Embodiment three:

[0071] Referring to Figures 1 to 5 , the third specific embodiment of the present application is shown, and the tablet crushing powder coating is in summer, and the temperature in the field is relatively high.

[0072] When the profile roller 3 rolls the extruded molten material sheet into a large material sheet, since the ambient temperature is relatively high, the cooling of the material sheet is slowed down, so that when the profile roller 6 is pre-pressed, the material sheet is too soft and the viscosity of the material sheet is too high, the material sheet adheres to the indentation blade 603, the pre-pressing effect of the profile roller 6 is poor, and since the material sheet is too soft, the ejector rod 8 cannot eject the material sheet from the roller hole 601, thereby affecting the next round of profiling.

[0073] Therefore, the distance between the profile rollers 3 is adjusted, so that the thickness of the material sheet is reduced, and the cooling time of the material sheet is reduced. When pre-pressed, the material sheet is in a preliminary setting state, but is relatively soft. At this time, the adjusting knob 904 of the rotary lifting device is rotated through the adjusting opening one 1101 on the protective cover 11, the screw rod 903 moves downward, the top block 902 is pushed downward by the screw rod 903, the top block 902 pushes the rotating shaft to move downward along the arc-shaped groove 901, so that the profile roller 6 is lowered, the profile roller 6 is close to the material sheet, and the indentation blade 603 cannot contact the material sheet, so that the profile roller 6 cannot pre-press the same area on the material sheet, thereby avoiding that the present application cannot achieve the design effect.

[0074] Although the beneficial effects of the present application have been shown in detail and examples have been provided in the specification, for those skilled in the art, various changes, modifications, replacements and variations can be made to the examples without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A powder coating production equipment, comprising: The frame is equipped with a track. At one end of the track, a pressure roller for rolling molten material into large sheets is installed on the frame. A cooling assembly is installed on the frame, including a fan mount on the frame and a cooling fan fixedly mounted on the fan mount. At the other end of the track, a crushing roller is installed on the frame, and the crushing roller is equipped with multiple crushing blades. Its features are: A bracket is fixedly installed on the frame, and a rotating shaft is fixedly installed on the bracket. A forming roller, located below the pressure roller, is movably installed on the rotating shaft for pre-pressing indentations on large sheets of material. A drive assembly is installed on the forming roller, which drives the forming roller to rotate and roll the forming roller on the powder coating sheet; the driven wheel is the same size as the driving wheel, and a conveyor belt is installed on the driving wheel and the driven wheel, which makes the forming roller and the pressure roller rotate synchronously. An anti-sticking component is provided on the outer circumference of the forming roller. The anti-sticking component is used to prevent the material sheet from sticking to the forming roller during the rotation of the forming roller. Multiple indentation blades are evenly provided on the cylindrical surface of the forming roller, and the multiple indentation blades form a mesh structure. The anti-sticking component includes roller holes opened in the mesh structure formed by the multiple indentation blades. Springs are fixedly installed in the multiple roller holes. A push rod is installed at the other end of the spring. A cam for pressing the push rod is provided on the rotating shaft. The bracket has an arc-shaped groove for mounting the first rotating shaft. The center of the arc-shaped groove is located at the center of the drive wheel. The bracket is equipped with a lifting device, which includes a top block fixedly installed below the first rotating shaft. The bracket below the top block has a threaded hole, and a screw is installed in the threaded hole. An adjustment knob is provided at the lower end of the screw.

2. The powder coating production equipment according to claim 1, characterized in that: The cylindrical surface of the forming roller is divided into multiple areas of the same size.

3. The powder coating production equipment according to claim 1, characterized in that: The drive assembly includes a drive wheel mounted on the pressure roller and a driven wheel fixedly mounted on the forming roller. The diameter of the forming roller is equal to the diameter of the pressure roller.

4. The powder coating production equipment according to claim 1, characterized in that: Multiple crushing blades are evenly distributed on the cylindrical surface of the crushing roller. An axial distance L1 is set between two adjacent crushing blades, and an axial distance L2 is set between two adjacent indentation blades, where L1 = L2.

5. The powder coating production equipment according to claim 1, characterized in that: The frame is equipped with a scraper, which works in conjunction with the push rod to scrape off the material.

6. The powder coating production equipment according to claim 1, characterized in that: A protective cover is fitted onto the forming roller, and both ends of the protective cover have adjustment opening one and adjustment opening two.

7. The powder coating production equipment according to claim 1, characterized in that: Multiple rollers are installed below the track beneath the forming roller.

8. A production process for powder coating production equipment according to any one of claims 1 to 7, characterized in that, Includes the following steps: S1: Weigh and mix the raw materials required for powder coating; S2: Premix the proportioned raw materials using a mixer; S3: The premixed raw materials are heated and melted through a melt extruder; S4: Roll the molten material into large tablets with a thickness of 2-3mm using a tablet press; S5: The large sheet is pre-rolled and pressed onto the sheet using a forming roller to create a sheet shape with the same area; S6: The pre-rolled large material is crushed by the crusher. The crushing roller hits the indentation of the pre-pressed material by the pressing roller, and the material is crushed into fragments of the same area. S7: The fragments are finely crushed by an air classifier mill, and qualified particles with a particle size of 10-70μm are obtained after air classification. S8: The finely crushed powder coating is filtered through a powder sieve to obtain usable powder coating particles.

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