Production equipment of polyester resin for powder coating

Abstract

Production equipment of polyester resin for powder coating belongs to the technical field of polyester resin production equipment and comprises a mounting plate, a circulating extrusion device, an adaptive discharging device and an adjustable feeding device. The adjustable feeding device, the cyclic extrusion device and the adaptive discharging device are arranged on the mounting plate, the cyclic extrusion device is used for carrying out cyclic tabletting operation on liquid polyester resin and comprises a power device and a forming device, the power device is fixedly arranged on the mounting plate and used for providing power for tabletting forming of the polyester resin, and the forming device is fixedly arranged on the mounting plate. The forming devices are arranged on the power device in sequence, and the forming devices are used for tabletting forming of liquid polyester resin. The power device and the forming devices are matched with each other, and the power device can respectively drive the multiple forming devices through the matched arrangement of simple mechanical structures, so that the production energy consumption is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of polyester resin production equipment, specifically referring to a production equipment for polyester resin used in powder coatings. Background Technology

[0002] Polyester resin is a general term for high molecular weight compounds formed by the condensation polymerization of diols, diacids, or polyols and polyacids. Solid powder synthetic resin coatings composed of solid resin, pigments, fillers, and additives are called powder coatings. The typical production process of low-temperature curing polyester resin powder involves: mixing and stirring the raw materials, extruding them through an extruder, pressing the molten polyester resin into tablets and cooling them to form solid polyester resin sheets, and finally pulverizing them into the required powder using a pulverizer. The tableting and cooling process in the tablet press is a crucial step in the entire production process of polyester resin powder, facilitating subsequent pulverization.

[0003] However, existing production equipment can only perform single-sheet compression operations when compressing polyester resin, making it difficult to achieve cyclic compression operations. Furthermore, the loading and unloading operations can only be performed sequentially, making it difficult to achieve continuous compression operations. This results in low production efficiency and cannot meet the needs of automated mass production of polyester resin. Summary of the Invention

[0004] In order to overcome some of the problems mentioned in the background above, the present invention provides a production equipment for polyester resin for powder coating.

[0005] According to the technical solution of the present invention, a production equipment for polyester resin for powder coating is provided, including a mounting plate, a circulating extrusion device, an adaptive feeding device and an adjustable feeding device, wherein the adjustable feeding device, the circulating extrusion device and the adaptive feeding device are disposed on the mounting plate; The adjustable feeding device is used for the cyclic feeding of polyester resin, the adaptive unloading device is used for the individual unloading of the molded polyester resin sheets, and the cyclic extrusion device is used for the cyclic pressing of liquid polyester resin. The cyclic extrusion device includes a power unit and a molding unit. The power unit is fixedly mounted on the mounting plate and is used to provide power for the pressing of polyester resin. Multiple sets of molding units are provided, and the multiple sets of molding units are sequentially mounted on the power unit. The multiple sets of molding units are used for the pressing of liquid polyester resin into sheets.

[0006] Furthermore, the power unit includes a guide rod, which is fixedly mounted on the mounting plate. The guide rod is symmetrically arranged about the central plane of the mounting plate. A fixing plate is fixedly mounted on the upper end of the guide rod. A compression cylinder is fixedly mounted on the upper wall of the fixing plate. The protruding end of the compression cylinder passes through the fixing plate. A sliding plate is fixedly mounted on the protruding end of the compression cylinder. The sliding plate is slidably mounted on the guide rod. A first drive rod is fixedly mounted on the lower wall of the sliding plate. The first drive rod is symmetrically arranged about the central plane of the sliding plate. A first drive hole is provided through the first drive rod, and multiple sets of the first drive hole are provided. A second drive hole is provided through the guide rod, and multiple sets of the second drive hole are provided.

[0007] Furthermore, any one of the forming devices includes a first connecting plate, which is fixedly mounted on the guide rod. The first connecting plate is symmetrically arranged about the central plane of the fixed plate. A forming frame is fixedly mounted on the first connecting plate. An adjusting cylinder is fixedly mounted on the upper wall of the first connecting plate. The extended end of the adjusting cylinder passes through the first connecting plate. A forming support plate is slidably mounted inside the forming frame. A control plate is fixedly mounted on the bottom wall of the forming support plate. The control plate is slidably mounted on the guide rod. The control plate is fixedly connected to the extended end of the adjusting cylinder.

[0008] Furthermore, any set of the forming devices further includes a second connecting plate, which is slidably disposed on the guide rod. The second connecting plate is symmetrically disposed about the central plane of the fixed plate. An extrusion plate is fixedly disposed on the second connecting plate and is configured to cooperate with the forming frame. A return spring is fixedly disposed on the bottom wall of the second connecting plate. The return spring is disposed on the guide rod, and the other end of the return spring is fixedly disposed on the first connecting plate. The return spring is symmetrically disposed about the central plane of the fixed plate. A first control mechanism is fixedly disposed on the upper wall of the second connecting plate. The first control mechanism is symmetrically disposed about the central plane of the fixed plate.

[0009] Furthermore, the first control mechanism includes a first upright plate and a first electromagnet. The first upright plate and the first electromagnet are respectively fixedly mounted on the upper wall of the second connecting plate. A first positioning rod is slidably mounted through the first upright plate. The first positioning rod is configured to cooperate with the first driving hole. A first control spring is mounted on the first positioning rod. One end of the first control spring is fixedly mounted on the first upright plate, and the other end of the first control spring is fixedly mounted on the first positioning rod.

[0010] Furthermore, a second control mechanism is fixedly installed on the lower wall of the second connecting plate. The second control mechanism is symmetrically arranged about the central plane of the fixed plate. The second control mechanism includes a second upright plate and a second electromagnet. The second upright plate and the second electromagnet are respectively fixedly installed on the lower wall of the second connecting plate. A second positioning rod is slidably installed through the second upright plate. The second positioning rod is configured to cooperate with the second driving hole. A second control spring is installed on the second positioning rod. One end of the second control spring is fixedly installed on the second upright plate, and the other end of the second control spring is fixedly installed on the second positioning rod.

[0011] Furthermore, the adjustable feeding device includes a mounting frame, which is fixedly mounted on the mounting plate. A movable plate is slidably mounted on the inner side wall of the mounting frame. A screw jack and a lifting motor are fixedly mounted on the upper wall of the movable plate. The upper end of the screw on the screw jack is rotatably connected to the upper wall of the mounting frame, and the lower end of the screw on the screw jack is rotatably connected to the mounting plate. The power output shaft of the lifting motor is poweredly connected to the power input shaft of the screw jack. A telescopic tube and a telescopic cylinder are fixedly mounted on the side wall of the movable plate. The extended end of the telescopic tube is fixedly connected to the extended end of the telescopic cylinder, and a feed pipe is fixedly mounted on the extended end of the telescopic tube.

[0012] Furthermore, the adaptive feeding device includes a vertical plate, which is fixedly mounted on the mounting plate. A guide box is fixedly mounted on the outer wall of the vertical plate. Multiple sets of guide boxes are provided. A shovel plate is slidably mounted inside any set of guide boxes. The shovel plate passes through the vertical plate and is configured to cooperate with the forming frame. A feeding box is fixedly mounted on the mounting plate and is positioned between the circulating extrusion device and the adaptive feeding device.

[0013] Furthermore, a guide tube is fixedly installed on the outer wall of the vertical plate, and a second drive rod is slidably installed on the guide tube. The other end of the second drive rod is slidably installed on the mounting plate. A third drive hole is provided through the second drive rod, and multiple sets of the third drive holes are provided. A feeding cylinder is fixedly installed on the inner wall of the vertical plate, and the protruding end of the feeding cylinder is provided through the vertical plate. The protruding end of the feeding cylinder is fixedly connected to the second drive rod.

[0014] Furthermore, a third control mechanism is fixedly installed on any one of the shovel plates. The third control mechanism includes a third upright plate and a third electromagnet. The third upright plate and the third electromagnet are respectively fixedly installed on the upper wall of the shovel plate. A third positioning rod is slidably installed through the third upright plate. The third positioning rod is configured to cooperate with the third driving hole. A third control spring is installed on the third positioning rod. One end of the third control spring is fixedly installed on the third upright plate, and the other end of the third control spring is fixedly installed on the third positioning rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The circulating extrusion device set in this invention can realize continuous tableting operation through the one-by-one circulating tableting operation, meet the needs of automated production, and has high processing efficiency; (2) The power unit and molding unit set in this invention cooperate with each other. The power unit can drive multiple molding units separately. Through multiple molding units, polyester resin is circulated and pressed into sheets, reducing production energy consumption and realizing continuous operation of feeding, molding and unloading. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the overall structure of the circulating extrusion device according to an embodiment of the present invention; Figure 3 This is an overall cross-sectional view of the circulating extrusion device according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the overall structure of the adaptive feeding device according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the overall structure of the adjustable feeding device according to an embodiment of the present invention; Figure 6 for Figure 2 A magnified view of a portion at point A.

[0017] Among them, 1. Mounting plate, 2. Circulating extrusion device, 3. Adaptive feeding device, 4. Adjustable feeding device, 5. Power device, 6. Forming device, 7. Guide rod, 8. Fixing plate, 9. Extrusion cylinder, 10. Sliding plate, 11. First drive rod, 12. First drive hole, 13. Second drive hole, 14. First connecting plate, 15. Forming frame, 16. Adjusting cylinder, 17. Forming support plate, 18. Control plate, 19. Second connecting plate, 20. Extrusion plate, 21. Return spring, 22. First control mechanism, 23. First upright plate, 24. First electromagnet, 25. First positioning rod, 26. First 27. Control spring; 28. Second control mechanism; 29. ​​Second upright plate; 30. Second electromagnet; 31. Second positioning rod; 32. Second control spring; 33. Mounting frame; 34. Moving plate; 35. Screw jack; 36. Lifting motor; 37. Telescopic tube; 38. Telescopic cylinder; 39. Feeding tube; 40. Vertical plate; 41. Guide box; 42. Shovel plate; 43. Discharge box; 44. Guide tube; 45. Second drive rod; 46. Third drive hole; 47. Discharge cylinder; 48. Third control mechanism; 49. Third upright plate; 50. Third electromagnet; 51. Third control spring. Detailed Implementation

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection.

[0019] In the description of the embodiments, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments.

[0020] Existing production equipment can only perform one tableting operation at a time when compressing polyester resin, making it difficult to achieve cyclic tableting of polyester resin. Furthermore, the corresponding loading and unloading operations can only be performed sequentially, making it difficult to achieve continuous tableting operations. This results in low production efficiency and cannot meet the needs of automated production of polyester resin.

[0021] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, an embodiment of the present invention provides a production equipment for polyester resin for powder coating, including a mounting plate 1, a circulating extrusion device 2, an adaptive feeding device 3, and an adjustable feeding device 4. The adjustable feeding device 4, the circulating extrusion device 2, and the adaptive feeding device 3 are disposed on the mounting plate 1.

[0022] The adjustable feeding device 4 is used for the cyclic feeding of polyester resin. It can transport the molten polyester resin output from the extruder to the cyclic extrusion device 2. At the same time, the output position can be freely adjusted according to requirements. The adaptive unloading device 3 is used for the individual unloading of the formed polyester resin sheets. It can remove the formed polyester resin sheets from the cyclic extrusion device 2 and realize the collection operation one by one to complete the unloading operation. The cyclic extrusion device 2 is used for the cyclic pressing operation of liquid polyester resin. Through the cyclic pressing operation, continuous pressing operation can be realized to meet the needs of automated production and achieve high processing efficiency. The cyclic extrusion device 2 includes a power unit 5 and a forming device 6. The power unit 5 is fixedly mounted on the mounting plate 1 and is used to provide power for the pressing and forming of polyester resin. There are multiple sets of forming devices 6. The multiple sets of forming devices 6 are arranged sequentially on the power unit 5. The multiple sets of forming devices 6 are used for the pressing and forming of liquid polyester resin. Through the cooperation of the power unit 5 and the forming devices 6, multiple forming devices 6 can be driven separately to realize the continuous operation of feeding, forming and unloading.

[0023] like Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments, the power unit 5 includes a guide rod 7, which is fixedly mounted on the mounting plate 1. The guide rod 7 is symmetrically arranged about the central plane of the mounting plate 1. A fixing plate 8 is fixedly mounted on the upper end of the guide rod 7. A compression cylinder 9 is fixedly mounted on the upper wall of the fixing plate 8. The protruding end of the compression cylinder 9 passes through the fixing plate 8. A sliding plate 10 is fixedly mounted on the protruding end of the compression cylinder 9. The sliding plate 10 is slidably mounted on the guide rod 7. A first drive rod 11 is fixedly mounted on the lower wall of the sliding plate 10. The first drive rod 11 is symmetrically arranged about the central plane of the sliding plate 10. A first drive hole 12 is provided through the first drive rod 11. Multiple sets of first drive holes 12 are provided. A second drive hole 13 is provided through the guide rod 7. Multiple sets of second drive holes 13 are provided. The protruding end of the drive cylinder extends out and can drive the first drive rod 11 to move downward through the sliding plate 10.

[0024] like Figure 1 , Figure 2 and Figure 3As shown, in some embodiments, any set of molding devices 6 includes a first connecting plate 14, which is fixedly mounted on a guide rod 7. The first connecting plate 14 is symmetrically arranged about the central plane of the fixed plate 8. A molding frame 15 is fixedly mounted on the first connecting plate 14. An adjusting cylinder 16 is fixedly mounted on the upper wall of the first connecting plate 14. The protruding end of the adjusting cylinder 16 passes through the first connecting plate 14. A molding support plate 17 is slidably mounted inside the molding frame 15. A control plate 18 is fixedly mounted on the bottom wall of the molding support plate 17. The control plate 18 is slidably mounted on the guide rod 7 and is fixedly connected to the protruding end of the adjusting cylinder 16. Liquid polyester resin is injected into the molding frame 15. The molding frame 15 can ensure that the molded sheet reaches the expected shape. After the polyester resin sheet is molded, by controlling the retraction of the protruding end of the adjusting cylinder 16, the control plate 18 can drive the molding support plate 17 to slide upward inside the molding frame 15, thus lifting the molded polyester resin sheet.

[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, in some embodiments, any set of molding devices 6 further includes a second connecting plate 19, which is slidably disposed on the guide rod 7. The second connecting plate 19 is symmetrically disposed about the central plane of the fixed plate 8. An extrusion plate 20 is fixedly disposed on the second connecting plate 19 and is configured to cooperate with the molding frame 15. A return spring 21 is fixedly disposed on the bottom wall of the second connecting plate 19 and is disposed on the guide rod 7. The other end of the return spring 21 is fixedly disposed on the first connecting plate 14 and is symmetrically disposed about the central plane of the fixed plate 8. A first control mechanism 22 is fixedly disposed on the upper wall of the second connecting plate 19 and is symmetrically disposed about the central plane of the fixed plate 8. By controlling the extrusion plate 20 to press down, the extrusion plate 20 can extrude and mold the polyester resin in the molding frame 15.

[0026] like Figure 1 , Figure 2 , Figure 3 and Figure 6As shown, in some embodiments, the first control mechanism 22 includes a first upright plate 23 and a first electromagnet 24. The first upright plate 23 and the first electromagnet 24 are respectively fixedly mounted on the upper wall of the second connecting plate 19. A first positioning rod 25 is slidably mounted through the first upright plate 23. The first positioning rod 25 is configured to cooperate with the first driving hole 12. A first control spring 26 is mounted on the first positioning rod 25. One end of the first control spring 26 is fixedly mounted on the first upright plate 23, and the other end of the first control spring 26 is fixedly mounted on the first positioning rod 25. When it is necessary to control the pressing plate 20 to press down, the first electromagnet 24 is turned off. Under the elastic force of the first control spring 26, the first positioning rod 25 slides towards the first driving rod 11, causing the first positioning rod 25 to cooperate into a set of first driving holes 12. Then the power device 5 can drive the pressing plate 20 on this forming device 6 to press down and perform the pressing operation.

[0027] like Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, in some embodiments, a second control mechanism 27 is fixedly disposed on the lower wall of the second connecting plate 19. The second control mechanism 27 is symmetrically arranged about the central plane of the fixed plate 8. The second control mechanism 27 includes a second upright plate 28 and a second electromagnet 29. The second upright plate 28 and the second electromagnet 29 are respectively fixedly disposed on the lower wall of the second connecting plate 19. A second positioning rod 30 is slidably disposed through the second upright plate 28. The second positioning rod 30 is configured to cooperate with the second driving hole 13. A second control spring 31 is disposed on the second positioning rod 30. One end of the second control spring 31 is fixedly disposed on the second upright plate 28, and the other end of the second control spring 31 is fixedly disposed on the second upright plate 28. When the extrusion plate 20 is driven to perform the extrusion operation, the extrusion plate 20 moves to the set position and is pressed into the molding frame 15. Then, the second electromagnet 29 is closed, and the second positioning rod 30 slides towards the guide rod 7 under the elastic force of the second control spring 31 until the second positioning rod 30 is inserted into a set of second drive holes 13. This fixes the position of the extrusion plate 20, allowing it to continuously press the polyester resin into sheets. Then, the first electromagnet 24 is turned on, causing the first positioning rod 25 to move out of the first drive hole 12. Then, the first drive rod 11 on the power unit 5 is reset upward, which can drive the next set of molding devices 6.

[0028] like Figure 1 and Figure 5As shown, in some embodiments, the adjustable feeding device 4 includes a mounting frame 32, which is fixedly mounted on a mounting plate 1. A movable plate 33 is slidably mounted on the inner side wall of the mounting frame 32. A screw jack 34 and a lifting motor 35 are fixedly mounted on the upper wall of the movable plate 33. The upper end of the screw on the screw jack 34 is rotatably connected to the upper wall of the mounting frame 32, and the lower end of the screw on the screw jack 34 is rotatably connected to the mounting plate 1. The power output shaft of the lifting motor 35 is poweredly connected to the power input shaft of the screw jack 34. A movable plate 33 is fixedly mounted on the side wall of the movable plate 33. The device is equipped with a telescopic tube 36 and a telescopic cylinder 37. The extended end of the telescopic tube 36 is fixedly connected to the extended end of the telescopic cylinder 37. A feed pipe 38 is fixedly installed on the extended end of the telescopic tube 36. The feed pipe 38 is connected to an extruder. The extruder transports molten polyester resin to the molding device 6 through the feed pipe 38. The height of the moving plate 33 can be adjusted by driving the screw jack 34 through the lifting motor 35. The telescopic tube 36 can be extended and retracted by the telescopic cylinder 37, thereby adjusting the spatial position of the feed pipe 38. This enables the feeding operation of the multi-component molding device 6.

[0029] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, the adaptive feeding device 3 includes a vertical plate 39, which is fixedly mounted on the mounting plate 1. A guide box 40 is fixedly mounted on the outer wall of the vertical plate 39. Multiple sets of guide boxes 40 are provided. A shovel plate 41 is slidably mounted in any set of guide boxes 40. The shovel plate 41 passes through the vertical plate 39 and is configured to cooperate with the forming frame 15. A feeding box 42 is fixedly mounted on the mounting plate 1. The feeding box 42 is located between the circulating extrusion device 2 and the adaptive feeding device 3. When feeding the formed polyester resin sheet, the shovel plate 41 extends from the guide box 40 to the corresponding forming frame 15. Since the forming support plate 17 lifts the polyester resin sheet at this time, the shovel plate 41 can shovel the polyester resin sheet off the forming support plate 17 and place the polyester resin sheet on the forming support plate 17. Then, the shovel plate 41 is controlled to retract, and the polyester resin sheet on the shovel plate 41 falls into the feeding box 42 under the action of the vertical plate 39, thus completing the feeding operation of the formed polyester resin sheet.

[0030] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, in some embodiments, a guide tube 43 is fixedly installed on the outer side wall of the vertical plate 39, and a second drive rod 44 is slidably installed on the guide tube 43. The other end of the second drive rod 44 is slidably installed on the mounting plate 1. A third drive hole 45 is provided through the second drive rod 44. Multiple sets of third drive holes 45 are provided. A feeding cylinder 46 is fixedly installed on the inner side wall of the vertical plate 39. The protruding end of the feeding cylinder 46 is provided through the vertical plate 39. The protruding end of the feeding cylinder 46 is fixedly connected to the second drive rod 44. The feeding cylinder 46 can drive the second drive rod 44 to slide on the guide tube 43.

[0031] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, a third control mechanism 47 is fixedly installed on any set of shovel plates 41. The third control mechanism 47 includes a third upright plate 48 and a third electromagnet 49. The third upright plate 48 and the third electromagnet 49 are respectively fixedly installed on the upper wall of the shovel plate 41. A third positioning rod 50 is slidably installed through the third upright plate 48. The third positioning rod 50 is configured to cooperate with the third drive hole 45. A third control spring 51 is installed on the third positioning rod 50. One end of the third control spring 51 is fixedly installed on the third upright plate 48, and the other end of the third control spring 51 is fixedly installed on the third positioning rod 50. When the third electromagnet 49 is closed, the third positioning rod 50 slides towards the second drive rod 44 under the elastic force of the third control spring 51, so that the third positioning rod 50 is inserted into the third drive hole 45 that cooperates with it. Then the feeding cylinder 46 can drive the corresponding shovel plate 41 to slide and perform feeding operation.

[0032] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A production equipment for polyester resin used in powder coatings, characterized in that: It includes a mounting plate (1), a circulating extrusion device (2), an adaptive feeding device (3), and an adjustable feeding device (4), wherein the adjustable feeding device (4), the circulating extrusion device (2), and the adaptive feeding device (3) are mounted on the mounting plate (1); The adjustable feeding device (4) is used for the cyclic feeding of polyester resin, the adaptive unloading device (3) is used for the individual unloading of the formed polyester resin sheets, the cyclic extrusion device (2) includes a power device (5) and a forming device (6), the power device (5) is fixedly installed on the mounting plate (1) and is used to provide power for the compression molding of polyester resin, the forming device (6) is provided in multiple sets, the multiple sets of forming devices (6) are sequentially installed on the power device (5), and the multiple sets of forming devices (6) are used for the compression molding of liquid polyester resin.

2. The production equipment for polyester resin for powder coatings according to claim 1, characterized in that: The power unit (5) includes a guide rod (7), which is fixedly mounted on the mounting plate (1). The guide rod (7) is symmetrically arranged about the central plane of the mounting plate (1). A fixing plate (8) is fixedly mounted on the upper end of the guide rod (7). A compression cylinder (9) is fixedly mounted on the upper wall of the fixing plate (8). The protruding end of the compression cylinder (9) passes through the fixing plate (8). A sliding plate (10) is fixedly mounted on the protruding end of the compression cylinder (9). The sliding plate (10) is slidably mounted on the guide rod (7). A first drive rod (11) is fixedly mounted on the lower wall of the sliding plate (10). The first drive rod (11) is symmetrically arranged about the central plane of the sliding plate (10). A first drive hole (12) is provided through the first drive rod (11). Multiple sets of the first drive holes (12) are provided. A second drive hole (13) is provided through the guide rod (7). Multiple sets of the second drive holes (13) are provided.

3. The production equipment for polyester resin for powder coatings according to claim 2, characterized in that: Any set of the forming device (6) includes a first connecting plate (14), the first connecting plate (14) is fixedly mounted on the guide rod (7), the first connecting plate (14) is symmetrically arranged about the central plane of the fixed plate (8), a forming frame (15) is fixedly mounted on the first connecting plate (14), an adjusting cylinder (16) is fixedly mounted on the upper wall of the first connecting plate (14), the protruding end of the adjusting cylinder (16) passes through the first connecting plate (14), a forming support plate (17) is slidably mounted inside the forming frame (15), a control plate (18) is fixedly mounted on the bottom wall of the forming support plate (17), the control plate (18) is slidably mounted on the guide rod (7), and the control plate (18) is fixedly connected to the protruding end of the adjusting cylinder (16).

4. The production equipment for polyester resin for powder coatings according to claim 3, characterized in that: Any set of the forming device (6) further includes a second connecting plate (19), the second connecting plate (19) is slidably disposed on the guide rod (7), the second connecting plate (19) is symmetrically disposed about the central plane of the fixed plate (8), an extrusion plate (20) is fixedly disposed on the second connecting plate (19), the extrusion plate (20) is configured to cooperate with the forming frame (15), a return spring (21) is fixedly disposed on the bottom wall of the second connecting plate (19), the return spring (21) is disposed on the guide rod (7), the other end of the return spring (21) is fixedly disposed on the first connecting plate (14), the return spring (21) is symmetrically disposed about the central plane of the fixed plate (8), a first control mechanism (22) is fixedly disposed on the upper wall of the second connecting plate (19), the first control mechanism (22) is symmetrically disposed about the central plane of the fixed plate (8).

5. The production equipment for polyester resin for powder coatings according to claim 4, characterized in that: The first control mechanism (22) includes a first upright plate (23) and a first electromagnet (24). The first upright plate (23) and the first electromagnet (24) are respectively fixedly mounted on the upper wall of the second connecting plate (19). A first positioning rod (25) is slidably mounted through the first upright plate (23). The first positioning rod (25) is configured to cooperate with the first driving hole (12). A first control spring (26) is mounted on the first positioning rod (25). One end of the first control spring (26) is fixedly mounted on the first upright plate (23), and the other end of the first control spring (26) is fixedly mounted on the first positioning rod (25).

6. The production equipment for polyester resin for powder coatings according to claim 5, characterized in that: A second control mechanism (27) is fixedly installed on the lower wall of the second connecting plate (19). The second control mechanism (27) is symmetrically arranged about the central plane of the fixed plate (8). The second control mechanism (27) includes a second upright plate (28) and a second electromagnet (29). The second upright plate (28) and the second electromagnet (29) are respectively fixedly installed on the lower wall of the second connecting plate (19). A second positioning rod (30) is slidably installed through the second upright plate (28). The second positioning rod (30) is configured to cooperate with the second driving hole (13). A second control spring (31) is installed on the second positioning rod (30). One end of the second control spring (31) is fixedly installed on the second upright plate (28), and the other end of the second control spring (31) is fixedly installed on the second positioning rod (30).

7. The production equipment for polyester resin for powder coatings according to claim 6, characterized in that: The adjustable feeding device (4) includes a mounting frame (32), which is fixedly mounted on the mounting plate (1). A movable plate (33) is slidably mounted on the inner side wall of the mounting frame (32). A screw jack (34) and a lifting motor (35) are fixedly mounted on the upper wall of the movable plate (33). The upper end of the screw on the screw jack (34) is rotatably connected to the upper wall of the mounting frame (32), and the lower end of the screw on the screw jack (34) is rotatably connected to the mounting plate (1). The power output shaft of the lifting motor (35) is poweredly connected to the power input shaft of the screw jack (34). A telescopic tube (36) and a telescopic cylinder (37) are fixedly mounted on the side wall of the movable plate (33). The extended end of the telescopic tube (36) is fixedly connected to the extended end of the telescopic cylinder (37), and a feed pipe (38) is fixedly mounted on the extended end of the telescopic tube (36).

8. The production equipment for polyester resin for powder coatings according to claim 7, characterized in that: The adaptive feeding device (3) includes a vertical plate (39), which is fixedly mounted on the mounting plate (1). A guide box (40) is fixedly mounted on the outer side wall of the vertical plate (39). Multiple sets of guide boxes (40) are provided. A shovel plate (41) is slidably mounted in any set of guide boxes (40). The shovel plate (41) passes through the vertical plate (39). The shovel plate (41) is configured to cooperate with the forming frame (15). A feeding box (42) is fixedly mounted on the mounting plate (1). The feeding box (42) is located between the circulating extrusion device (2) and the adaptive feeding device (3).

9. The production equipment for polyester resin for powder coatings according to claim 8, characterized in that: A guide tube (43) is fixedly installed on the outer wall of the vertical plate (39). A second drive rod (44) is slidably installed on the guide tube (43). The other end of the second drive rod (44) is slidably installed on the mounting plate (1). A third drive hole (45) is provided through the second drive rod (44). Multiple sets of the third drive holes (45) are provided. A feeding cylinder (46) is fixedly installed on the inner wall of the vertical plate (39). The protruding end of the feeding cylinder (46) is provided through the vertical plate (39). The protruding end of the feeding cylinder (46) is fixedly connected to the second drive rod (44).

10. The production equipment for polyester resin for powder coating according to claim 9, characterized in that: A third control mechanism (47) is fixedly installed on any one of the shovel plates (41). The third control mechanism (47) includes a third upright plate (48) and a third electromagnet (49). The third upright plate (48) and the third electromagnet (49) are respectively fixedly installed on the upper wall of the shovel plate (41). A third positioning rod (50) is slidably installed through the third upright plate (48). The third positioning rod (50) is configured to cooperate with the third driving hole (45). A third control spring (51) is installed on the third positioning rod (50). One end of the third control spring (51) is fixedly installed on the third upright plate (48), and the other end of the third control spring (51) is fixedly installed on the third positioning rod (50).

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