A plastic product surface flatness cutting system

Abstract

The application discloses a plastic product surface flatness cutting system capable of preventing cutting bounce and guaranteeing the flatness of a cutting plane. The application comprises a workbench top plate and a bottom plate, a clamping work plate is arranged above the workbench top plate, a three-axis leveling module is arranged on the bottom plate, the three-axis leveling module is connected with three corners of the clamping work plate respectively after penetrating through the workbench top plate, horizontal clamping mechanisms are symmetrically arranged at two ends of the clamping work plate, the horizontal clamping mechanisms are used for horizontally clamping products, a downward clamping mechanism is arranged at the front end of the horizontal clamping mechanism, a downward placing mechanism is arranged at the middle lower end of the workbench top plate, a carrier matched with the products is arranged on the downward placing mechanism, the downward clamping mechanism and the downward placing mechanism are used for longitudinally clamping the products, a positioning height feedback module is arranged in the carrier, and the workbench top plate is further provided with a cutting mechanism located directly above the carrier. The application is applied to the technical field of flatness cutting.

Description

Technical Field

[0001] This invention relates to the technical field of surface flatness cutting, and particularly to a surface flatness cutting system for plastic products. Background Technology

[0002] Currently, the cutting of plastic materials generally involves clamping the product with a fixture and then cutting it with a cutting tool. However, for products with high-quality requirements, such as the surface cutting of the motor fan casing in existing air purifiers, this method cannot meet the high-precision processing requirements. The existing motor fan casing includes a motor and a casing shell. The casing shell contains fan blades connected to the motor. When cutting the surface of the motor fan casing, it is necessary to ensure that the bottom surface of the motor and the top surface of the casing are parallel to each other to achieve flatness. The existing casing shell has a limiting ring platform on its outer edge. Traditionally, the casing shell is clamped with a fixture and then cut. However, because the casing shell is relatively thin, it is easy to cause jumping and shaking during the cutting process. Moreover, the manual clamping process is also prone to uneven clamping, which makes it impossible to meet the flatness requirements of the bottom surface of the motor and the cutting surface. Therefore, there is an urgent need to develop a cutting equipment that can meet the cutting requirements for production to ensure product quality. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a plastic product surface flatness cutting system that prevents cutting runout and ensures the flatness of the cutting plane.

[0004] The technical solution adopted in this invention is as follows: This invention includes a top plate and a bottom plate of a workbench. A clamping work plate is provided above the top plate of the workbench, and a three-axis leveling module is provided on the bottom plate. The three-axis leveling module passes through the top plate of the workbench and is connected to the three corners of the clamping work plate. Horizontal clamping mechanisms are symmetrically arranged at both ends of the clamping work plate. The horizontal clamping mechanisms are used to horizontally clamp the product. A downward clamping mechanism is provided at the front end of the horizontal clamping mechanism. A lowering and placing mechanism is provided at the lower middle part of the top plate of the workbench. A carrier adapted to the product is provided on the lowering and placing mechanism. The downward clamping mechanism and the lowering and placing mechanism cooperate to vertically clamp the product. A positioning height feedback module is provided inside the carrier. The three-axis leveling module is used to receive the product position feedback from the positioning height feedback module and adjust it horizontally. The top plate of the workbench is also provided with a cutting mechanism located directly above the carrier. The cutting mechanism is used to cut the surface of the product.

[0005] Furthermore, the cutting system also includes a cabinet that covers the top plate of the worktable. The cabinet is equipped with an operating door, a grating sensor is installed on the side of the operating door, a display screen is installed on the upper end of the operating door, and an MCU controller is installed at the lower end of the cabinet. The three-axis leveling module, the horizontal clamping mechanism, the downward clamping mechanism, the lowering and placing mechanism, the positioning height feedback module, the cutting mechanism, the grating sensor, and the display screen are all electrically connected to the MCU controller.

[0006] Furthermore, the three-axis leveling module includes three leveling mechanisms distributed at the three corners of the base plate. Each leveling mechanism includes a leveling base, a leveling top seat, a leveling swing head, a fisheye bearing, an electric cylinder base, a swing electric cylinder, and a drive electric cylinder. The leveling base is mounted on the base plate. The two ends of the leveling swing head are connected to the leveling base and the electric cylinder base, respectively. The swing electric cylinder is mounted inside the electric cylinder base. The output shaft of the drive electric cylinder and the output shaft of the swing electric cylinder are connected through a power transmission pulley. The leveling top seat is mounted on the lower end of the clamping work plate. The two ends of the fisheye bearing are connected to the upper ends of the leveling top seat and the swing electric cylinder, respectively.

[0007] Furthermore, the top plate of the workbench has a notch in the middle, the clamping work plate is located directly above the notch, the lowering and placing mechanism includes a mounting plate installed at the lower end of the top plate of the workbench and located between the front and rear sides of the notch, the mounting plate is equipped with a lifting electric cylinder, the lower end of the carrier is connected to the lifting electric cylinder, and the two ends of the mounting plate are symmetrically arranged with material sensors extending into the carrier; the positioning height feedback module includes three height sensors respectively distributed at the three corners of the mounting plate, the sensing head of the height sensor passes through the mounting plate and extends into the bottom of the carrier.

[0008] Furthermore, the plastic product is a fan motor, which includes a drive motor, a fan housing, and fan blades. A limiting ring platform is provided on the outer edge of the middle part of the fan housing. The fan blades are adapted to be installed inside the fan housing. The drive motor is installed at the lower end of the fan housing, and the drive shaft of the drive motor is connected to the fan blades. The horizontal clamping mechanism includes horizontal slide rails symmetrically arranged at both ends of the clamping work plate. Horizontal clamping plates and horizontal drive motors connected to the horizontal clamping plates are adapted to be installed on each horizontal slide rail. The front ends of the two horizontal clamping plates are provided with first arc-shaped clamping surfaces adapted to the fan housing. The two first arc-shaped clamping surfaces are used to horizontally clamp and fix the fan housing. Horizontal lifting plates are provided at the upper ends of the two horizontal clamping plates. The front ends of the two horizontal lifting plates are provided with inverted frustum arc-shaped step grooves. The two inverted frustum arc-shaped step grooves are used to lift, limit, and fix the limiting ring platform.

[0009] Furthermore, the downward clamping mechanism includes two downward drive motors respectively fixed to the lower ends of the two horizontal clamping plates and a downward upright plate connected to the downward drive motors. The top end of the downward upright plate passes through the horizontal clamping plates and the horizontal lifting plate. A downward silicone plate is provided at the bottom end of the downward upright plate. The downward silicone plate is located directly above the inverted truncated cone arc-shaped step groove, and the front end of the downward silicone plate is provided with a second arc-shaped clamping surface adapted to the outer shell of the air duct. The carrier is adapted to the drive motor. The lifting electric cylinder is used to drive the entire product to move downward when the inverted truncated cone arc-shaped step groove moves below the limiting ring platform, so that the limiting ring platform moves downward and contacts the inverted truncated cone arc-shaped step groove. The downward silicone plate is used to press the limiting ring platform tightly onto the inverted truncated cone arc-shaped step groove.

[0010] Furthermore, tensioning connecting rods are provided at the lower perimeter of the horizontal clamping plate, a cylinder mounting seat is provided in the middle of the base plate, a tensioning cylinder is provided at the upper end of the cylinder mounting seat, a tensioning connector is provided at the upper end of the tensioning cylinder, and tensioning springs are provided at the lower ends of the tensioning connecting rods. All four tensioning springs are connected to the tensioning connectors.

[0011] Furthermore, the cutting mechanism includes a lifting module and a cutting module connected to the lifting module. The lifting module includes a support base fixed to the top plate of the worktable. The support base is provided with a linear lifting guide rail, a lifting mounting plate, and a lifting drive motor. The linear lifting guide rail is mounted on the end face of the support base. The lifting mounting plate is adapted to be mounted on the linear lifting guide rail and connected to the lifting drive motor. A sensing element is provided at both the beginning and end of the linear lifting guide rail. A sensor matching the sensing element is provided on the side end of the lifting mounting plate. Part Two; The cutting module includes a motor mounting base installed on the end face of the lifting mounting plate. A cutting servo motor is provided at the upper end of the motor mounting base, and a cutting head connecting assembly is provided at the lower end of the cutting servo motor. A cutting blade is provided at the lower end of the cutting head connecting assembly. A cutting suction hood is provided at the lower end of the motor mounting base. The cutting blade is placed inside the cutting suction hood. Vacuum discharge pipes are provided at both ends of the cutting suction hood. Both vacuum discharge pipes are connected to a vacuum generator. A waste collection box is also provided between the vacuum discharge pipes and the vacuum generator.

[0012] Furthermore, the cutting head connecting assembly includes a connecting cylinder, the upper end of which is connected to the output shaft of the cutting servo motor, and the lower end of which is connected to the cutting blade. A positioning shaft is provided in the middle of the upper end of the connecting cylinder. The positioning shaft does not rotate with the connecting cylinder. One end of the positioning shaft extends into the interior of the connecting cylinder and is connected to a pressure block provided inside the connecting cylinder. A compression spring is provided below the pressure block, and a fixing pressure shaft is provided at the lower end of the compression spring. The lower end of the fixing pressure shaft extends out of the connecting cylinder and is located at the center of the cutting blade. A bolt head is provided at the top center of the fan blade, and a tapered hole adapted to the bolt head is provided at the bottom of the fixing pressure shaft.

[0013] Furthermore, the clamping work plate has a rectangular notch symmetrically provided at the center of the front end, and rectangular notches 2 are provided on both sides of the rear end of the clamping work plate. The top plate of the worktable is provided with a number of pressure rollers, and each pressure roller is in close contact with either the rectangular notch 1 or the rectangular notch 2.

[0014] The beneficial effects of this invention are: 1. The horizontal clamping mechanism ensures that the product can be clamped horizontally. The downward clamping mechanism and the lowering placement mechanism work together to ensure that the product can be clamped vertically, preventing the product from jumping or shaking during the cutting process and affecting the cutting quality; 2. The positioning height feedback module identifies the flatness of the bottom surface of the product and feeds it back to the three-axis leveling module. The three-axis leveling module adjusts the bottom surface of the product to always keep it on a horizontal plane, thereby ensuring the flatness of the top surface and bottom surface of the product during cutting. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention;

[0016] Figure 2 This is a side view of the cabinet after the side door of the present invention has been opened;

[0017] Figure 3 This is a schematic diagram of the internal structure of the server rack;

[0018] Figure 4 This is the front view of the inside of the server rack;

[0019] Figure 5 This is a schematic diagram of the installation structure on the top plate of the workbench;

[0020] Figure 6 This is a schematic diagram of the lowering and placing mechanism;

[0021] Figure 7 This is an exploded view of the horizontal clamping mechanism and the downward clamping mechanism;

[0022] Figure 8This is a schematic diagram of the leveling mechanism;

[0023] Figure 9 This is a schematic diagram of the cutting mechanism;

[0024] Figure 10 This is a cross-sectional view of the cutting head connection assembly;

[0025] Figure 11 This is the main view of the product. Detailed Implementation

[0026] like Figures 1 to 11 As shown, in this embodiment, the present invention includes a top plate 1 and a bottom plate. A clamping work plate 3 is disposed above the top plate 1, and a three-axis leveling module 4 is disposed on the bottom plate. The three-axis leveling module 4 passes through the top plate 1 and is connected to the three corners of the clamping work plate 3. Horizontal clamping mechanisms 5 are symmetrically disposed at both ends of the clamping work plate 3. The horizontal clamping mechanisms 5 are used to horizontally clamp the product. A downward clamping mechanism 6 is disposed at the front end of the horizontal clamping mechanism 5. The top plate 1... A lowering and placing mechanism 7 is provided at the lower middle part of the product. A carrier 8 adapted to the product is provided on the lowering and placing mechanism 7. The pressing and clamping mechanism 6 and the lowering and placing mechanism 7 cooperate to clamp the product longitudinally. A positioning height feedback module 9 is provided inside the carrier 8. The three-axis leveling module 4 is used to receive the product position feedback from the positioning height feedback module 9 and adjust it horizontally. The top plate 1 of the worktable is also provided with a cutting mechanism 2 located directly above the carrier 8. The cutting mechanism 2 is used to cut the surface of the product.

[0027] In this embodiment, a scanning gun is also provided on the top plate 1 of the workbench, which faces directly above the carrier 8 and is used to identify products.

[0028] In this embodiment, the cutting system further includes a cabinet 11, which covers the top plate 1 of the worktable. The cabinet 11 is equipped with an operating door, and a grating sensor 12 is installed on the side of the operating door. The grating sensor 12 is used to prevent accidental contact by human hand during cutting. A display screen 13 is installed at the upper end of the operating door, and an MCU controller is installed at the lower end of the cabinet 11. The three-axis leveling module 4, the horizontal clamping mechanism 5, the downward clamping mechanism 6, the lowering and placing mechanism 7, the positioning height feedback module 9, the cutting mechanism 2, the grating sensor 12, the scanning gun, and the display screen 13 are all electrically connected to the MCU controller.

[0029] In this embodiment, the three-axis leveling module 4 includes three leveling mechanisms distributed at the three corners of the base plate, thereby enabling the clamping work plate 3 to be leveled at any angle based on the principle that three points determine a plane. Each leveling mechanism includes a leveling base 41, a leveling top seat 42, a leveling swing head 43, a fisheye bearing 44, an electric cylinder base 45, a swing electric cylinder 46, and a drive electric cylinder 47. The leveling base 41 is mounted on the base plate. The two ends of the leveling swing head 43 are connected to the leveling base 41 and the electric cylinder base 45, respectively. The swing electric cylinder 46 is installed inside the electric cylinder base 45. The output shafts of the drive electric cylinder 47 and the swing electric cylinder 46 are connected by a power source. The transmission pulley is connected, and the leveling top seat 42 is installed at the lower end of the clamping working plate 3. The two ends of the fisheye bearing 44 are respectively connected to the leveling top seat 42 and the upper end of the swing electric cylinder 46. This design is used so that when the positioning height feedback module 9 detects the levelness of the bottom surface of the product and transmits it to the MCU controller, after the MCU controller receives the levelness of the bottom surface of the product, it controls the corresponding leveling mechanism to level the clamping working plate 3 at any angle, thereby ensuring that the bottom surface of the product is kept on a horizontal plane. The specific operation is to drive the swing electric cylinder 46 to swing through the drive electric cylinder 47, thereby causing the fisheye bearing 44 to drive the clamping working plate 3 to perform horizontal correction and adjustment.

[0030] In this embodiment, a notch 101 is provided in the middle of the top plate 1 of the workbench, and the clamping work plate 3 is located directly above the notch 101. The lowering and placing mechanism 7 includes a mounting plate 71 installed at the lower end of the top plate 1 of the workbench and located between the front and rear sides of the notch 101. The mounting plate 71 is provided with a lifting electric cylinder 72. The lower end of the carrier 8 is connected to the lifting electric cylinder 72. Material sensors 73 extending into the carrier 8 are symmetrically arranged at both ends of the mounting plate 71. The material sensors are used to detect whether the product is placed in the carrier 8. The positioning height feedback module 9 includes three components respectively distributed on the mounting plate 71. The mounting plate 71 has a height sensor 91 at three corners. The height sensor 91 is a high-precision contact digital sensor. The sensing head 92 of the height sensor 91 passes through the mounting plate 71 and extends into the bottom of the carrier 8. The carrier 8 has a mounting through hole larger than the high-precision contact digital sensor, so that the carrier 8 can raise and lower the high-precision contact digital sensor. This design also uses the principle of three points determining a surface. Three high-precision contact digital sensors are designed so that after the product follows the carrier 8 down, they can simultaneously contact the three high-precision contact digital sensors to determine the levelness of the bottom surface of the product. This information is then transmitted to the MCU controller.

[0031] In this embodiment, the plastic product is a duct motor, which includes a drive motor 1a, a duct housing 2a, and fan blades. A limiting ring 3a is provided along the outer edge of the middle portion of the duct housing 2a. The fan blades are fitted inside the duct housing 2a. The drive motor 1a is installed at the lower end of the duct housing 2a, and its drive shaft is connected to the fan blades. The cutting process involves cutting the top surfaces of the duct housing 2a and the fan blades, while ensuring that these top surfaces remain parallel to the top surface of the drive motor 1a. The horizontal clamping mechanism 5 includes horizontal slide rails 51 symmetrically arranged at both ends of the clamping work plate 3. Horizontal clamping plates 52 and horizontal drive motors connected to the horizontal clamping plates 52 are fitted onto each horizontal slide rail 51. The front ends of both horizontal clamping plates 52 are provided with first arc-shaped clamping surfaces 53 that fit the duct housing 2a. The front ends of the first arc-shaped clamping surfaces 53 are provided with arc-shaped silicone clamps that fit them. The first arc-shaped clamping surface 53 and the arc-shaped silicone clamping surface 531 are provided with several spring buffer posts. Two of the first arc-shaped clamping surfaces 53 are used to horizontally clamp and fix the bottom of the air duct shell 2a. The upper ends of the two horizontal clamping plates 52 are provided with horizontal lifting plates 54. The front end faces of the two horizontal lifting plates 54 are provided with inverted frustum arc-shaped stepped grooves 55. The two inverted frustum arc-shaped stepped grooves 55 are used to lift, limit, and fix the limiting ring platform 3a. This design The working process is as follows: the two horizontal drive motors simultaneously drive the two horizontal clamping plates 52 to move closer to the center. When the arc-shaped silicone clamping surface 531 contacts the product, the inverted truncated cone arc-shaped step groove 55 is located directly below the limiting ring platform 3a. At this time, the lifting electric cylinder 72 drives the product in the carrier 8 to descend, so that the limiting ring platform 3a is attached to the inverted truncated cone arc-shaped step groove 55. At the same time, the arc-shaped silicone clamping surface 531 continues to advance and horizontally clamps the product under the action of the spring buffer column.

[0032] In this embodiment, the downward clamping mechanism 6 includes two downward drive motors 61 respectively fixed to the lower ends of the two horizontal clamping plates 52 and a downward upright plate 62 connected to the downward drive motors 61. The top end of the downward upright plate 62 passes through the horizontal clamping plates 52 and the horizontal lifting plate 54, and the bottom end of the downward upright plate 62 is provided with a downward silicone plate 63. The downward silicone plate 63 is located directly above the inverted frustum arc-shaped stepped groove 55, and the downward... The front end of the silicone pressure plate 63 is provided with a second arc-shaped clamping surface 64 that is adapted to the outer shell 2a of the air duct; the carrier 8 is adapted to the drive motor 1a; the lifting electric cylinder 72 is used to drive the entire product to move down when the inverted truncated cone arc-shaped step groove 55 moves below the limiting ring platform 3a, so that the limiting ring platform 3a moves down and contacts the inverted truncated cone arc-shaped step groove 55; the pressing silicone plate 63 is used to press the limiting ring platform 3a tightly onto the inverted truncated cone arc-shaped step groove 55.

[0033] In this embodiment, tensioning connecting rods 56 are provided at the lower perimeter of the horizontal clamping plate 52, a cylinder mounting seat 57 is provided in the middle of the base plate, a tensioning cylinder 58 is provided at the upper end of the cylinder mounting seat 57, a tensioning connector 59 is provided at the upper end of the tensioning cylinder 58, and a tensioning spring 510 is provided at the lower end of each tensioning connecting rod 56. All four tensioning springs 510 are connected to the tensioning connector 59. The tensioning cylinder 58 is used to ensure that the horizontal clamping plate 52 can be tensioned to prevent shaking during the cutting process.

[0034] In this embodiment, the cutting mechanism 2 includes a lifting module and a cutting module connected to the lifting module. The lifting module includes a support base 21 fixed to the top plate 1 of the worktable. The support base 21 is provided with a linear lifting guide rail 22, a lifting mounting plate 23, and a lifting drive motor 24. The linear lifting guide rail 22 is mounted on the end face of the support base 21. The lifting mounting plate 23 is adapted to be mounted on the linear lifting guide rail 22 and connected to the lifting drive motor 24. The first and second ends of the linear lifting guide rail 22 are provided with sensing plates 25, and the side end of the lifting mounting plate 23 is provided with sensing plates 25 that match the first sensing plates 25. The cutting module includes a motor mounting plate mounted on the end face of the lifting mounting plate 23. The motor mounting base 26 has a cutting servo motor 27 mounted on its upper end, a cutting head connecting assembly 28 mounted on its lower end, a cutting blade 29 mounted on its lower end, and a cutting suction hood 210 mounted on its lower end. The cutting blade 29 is placed inside the cutting suction hood 210. Vacuum discharge pipes 211 are located at both ends of the cutting suction hood 210, and both vacuum discharge pipes 211 are connected to a vacuum generator. A waste collection box is also provided between the vacuum discharge pipes 211 and the vacuum generator. This design allows the cutting blade 29 to cut the top surface of the product, and the waste generated during cutting can be directly sucked away by the cutting suction hood 210 and discharged into the waste collection box.

[0035] In this embodiment, the cutting head connecting assembly 28 includes a connecting cylinder 281. The upper end of the connecting cylinder 281 is connected to the output shaft of the cutting servo motor 27, and the lower end of the connecting cylinder 281 is connected to the cutting blade 29. A positioning shaft 282 is provided in the middle of the upper end of the connecting cylinder 281. The positioning shaft 282 does not rotate with the connecting cylinder 281. One end of the positioning shaft 282 extends into the interior of the connecting cylinder 281 and is connected to a pressure block 283 provided inside the connecting cylinder 281. A compression spring 284 is provided below the pressure block 283, and a fixing pressure shaft 285 is provided at the lower end of the compression spring 284. The lower end of the fixed pressure shaft 285 extends out of the connecting cylinder 281 and is located at the center of the cutting blade 29. In the non-stressed state, the fixed pressure shaft 285 is exposed outside the cutting blade 29, but under stress, it can be pushed back into the cutting blade 29 by the compression spring 284. The top center of the fan blade is provided with a bolt head 4a, and the bottom of the fixed pressure shaft 285 is provided with a tapered hole 286 that matches the bolt head 4a. This design is used for cutting. When the cutting process is performed, the bottom of the fixed pressure shaft 285 first contacts the bolt head 4a and then pushes the fixed pressure shaft 285 back into the cutting blade 29 during the pressing process. The fixed pressure shaft 285 further presses the product, so that the cutting blade 29 can perform cutting work better.

[0036] In this embodiment, a rectangular notch 1 is symmetrically provided at the center of the front end of the clamping work plate 3, and rectangular notches 2 are provided on both sides of the rear end of the clamping work plate 3. A plurality of pressure plate rollers 13 are provided on the top plate 1 of the worktable, and each pressure plate roller 13 is in close contact with either the rectangular notch 1 or the rectangular notch 2.

[0037] In this embodiment, the working process of the present invention is as follows: Manual loading involves placing the product into the carrier, then pressing the start button. The two horizontal drive motors simultaneously drive the two horizontal clamping plates towards the center. When the arc-shaped silicone clamping surface 531 contacts the product, the inverted truncated cone arc-shaped step groove is directly below the limiting ring platform. At this time, the lifting electric cylinder lowers the product inside the carrier, causing the limiting ring platform to adhere to the inverted truncated cone arc-shaped step groove. Simultaneously, the arc-shaped silicone clamping surface 531 continues to advance and, under the action of the spring buffer column, horizontally clamps the product. Then, the downward clamping mechanism presses down, pressing the product firmly onto the inverted truncated cone arc-shaped step groove, and is then dragged by three height sensors. The product's bottom surface is then pressed down by a silicone plate, which presses the product firmly onto the inverted truncated cone-shaped stepped groove, ensuring that the product is longitudinally compressed. Then, three height sensors detect the height of three points on the bottom surface of the product and transmit the information to the MCU controller. The MCU controller then controls three leveling mechanisms to adjust the clamping work plate, ensuring that the bottom surface of the product remains parallel to the horizontal plane. Next, the lifting module drives the cutting module to descend. During the descent, the fixing pressure shaft first fits onto the bolt head and presses down on the product. Then, the cutting servo motor drives the cutting blade to cut the top surface of the product. The waste generated during cutting is also sucked away by the cutting suction hood and discharged into the waste collection box.

[0038] Although the embodiments of the present invention are described with reference to actual solutions, they do not constitute a limitation on the meaning of the present invention. Modifications to the embodiments and combinations with other solutions based on this specification will be obvious to those skilled in the art.

Claims

1. A surface flatness cutting system for plastic products, characterized in that: It includes a top plate (1) and a bottom plate. A clamping work plate (3) is provided above the top plate (1). A three-axis leveling module (4) is provided on the bottom plate. The three-axis leveling module (4) passes through the top plate (1) and is connected to the three corners of the clamping work plate (3). Horizontal clamping mechanisms (5) are symmetrically provided at both ends of the clamping work plate (3). The horizontal clamping mechanisms (5) are used to horizontally clamp the product. A downward clamping mechanism (6) is provided at the front end of the horizontal clamping mechanism (5). A middle lower end of the top plate (1) is provided with... The table is equipped with a lowering and placing mechanism (7), on which a carrier (8) adapted to the product is provided. The lowering and placing mechanism (6) and the lowering and placing mechanism (7) cooperate to clamp the product longitudinally. A positioning height feedback module (9) is provided inside the carrier (8). The three-axis leveling module (4) is used to receive the product position feedback from the positioning height feedback module (9) and adjust it horizontally. The top plate (1) of the worktable is also equipped with a cutting mechanism (2) located directly above the carrier (8). The cutting mechanism (2) is used to cut the surface of the product. The plastic product is a duct motor, which includes a drive motor (1a), a duct housing (2a), and fan blades. A limiting ring platform (3a) is provided on the outer edge of the middle part of the duct housing (2a). The fan blades are adapted to be installed inside the duct housing (2a). The drive motor (1a) is installed at the lower end of the duct housing (2a), and the drive shaft of the drive motor (1a) is connected to the fan blades. The horizontal clamping mechanism (5) includes horizontal slide rails (51) symmetrically arranged at both ends of the clamping work plate (3). Horizontal clamping devices are adapted to be installed on each of the horizontal slide rails (51). The plate (52) and the horizontal drive motor connected to the horizontal clamping plate (52) are provided with a first arc-shaped clamping surface (53) at the front end of each of the two horizontal clamping plates (52) that is adapted to the outer shell of the air duct (2a). The two first arc-shaped clamping surfaces (53) are used to horizontally clamp and fix the outer shell of the air duct (2a). The upper end of each of the two horizontal clamping plates (52) is provided with a horizontal lifting plate (54). The front end face of the two horizontal lifting plates (54) is provided with an inverted frustum arc-shaped step groove (55). The two inverted frustum arc-shaped step grooves (55) are used to lift, limit and fix the limiting ring platform (3a).

2. The surface flatness cutting system for plastic products according to claim 1, characterized in that: The cutting system also includes a cabinet (11), which covers the top plate (1) of the workbench inside. The cabinet (11) is equipped with an operating door, and a grating sensor (12) is provided on the side of the operating door. A display screen (13) is provided on the upper end of the operating door. An MCU controller is provided on the lower end of the cabinet (11). The three-axis leveling module (4), the horizontal clamping mechanism (5), the downward clamping mechanism (6), the lowering placement mechanism (7), the positioning height feedback module (9), the cutting mechanism (2), the grating sensor (12), and the display screen (13) are all electrically connected to the MCU controller.

3. The surface flatness cutting system for plastic products according to claim 1, characterized in that: The three-axis leveling module (4) includes three leveling mechanisms distributed at the three corners of the base plate. The leveling mechanism includes a leveling base (41), a leveling top seat (42), a leveling swing head (43), a fisheye bearing (44), an electric cylinder base (45), a swing electric cylinder (46), and a drive electric cylinder (47). The leveling base (41) is installed on the base plate. The two ends of the leveling swing head (43) are connected to the leveling base (41) and the electric cylinder base (45) respectively. The swing electric cylinder (46) is installed in the electric cylinder base (45). The output shaft of the drive electric cylinder (47) and the output shaft of the swing electric cylinder (46) are connected through a power transmission pulley. The leveling top seat (42) is installed at the lower end of the clamping work plate (3). The two ends of the fisheye bearing (44) are connected to the upper ends of the leveling top seat (42) and the swing electric cylinder (46) respectively.

4. The surface flatness cutting system for plastic products according to claim 1, characterized in that: The top plate (1) of the workbench has a notch (101) in the middle. The clamping work plate (3) is located directly above the notch (101). The lowering and placing mechanism (7) includes a mounting plate (71) installed at the lower end of the top plate (1) of the workbench and located between the front and rear sides of the notch (101). The mounting plate (71) is equipped with a lifting electric cylinder (72). The lower end of the carrier (8) is connected to the lifting electric cylinder (72). The two ends of the mounting plate (71) are symmetrically provided with material sensors (73) that extend into the carrier (8). The positioning height feedback module (9) includes three height sensors (91) distributed at the three corners of the mounting plate (71). The sensing head (92) of the height sensor (91) passes through the mounting plate (71) and extends into the bottom of the carrier (8).

5. The surface flatness cutting system for plastic products according to claim 4, characterized in that: The downward clamping mechanism (6) includes two downward drive motors (61) respectively fixed to the lower ends of the two horizontal clamping plates (52) and a downward upright plate (62) connected to the downward drive motors (61). The top of the downward upright plate (62) passes through the horizontal clamping plate (52) and the horizontal lifting plate (54). The bottom end of the downward upright plate (62) is provided with a downward silicone plate (63). The downward silicone plate (63) is located directly above the inverted frustum arc-shaped stepped groove (55). (63) The front end is provided with a second arc-shaped clamping surface (64) that is adapted to the outer shell (2a) of the air duct; the carrier (8) is adapted to the drive motor (1a); the lifting electric cylinder (72) is used to drive the entire product to move down when the inverted truncated cone arc-shaped step groove (55) moves below the limiting ring platform (3a), so that the limiting ring platform (3a) moves down and contacts the inverted truncated cone arc-shaped step groove (55); the pressing silicone plate (63) is used to press the limiting ring platform (3a) onto the inverted truncated cone arc-shaped step groove (55).

6. The surface flatness cutting system for plastic products according to claim 4, characterized in that: The horizontal clamping plate (52) is provided with tensioning connecting rods (56) at the lower ends of its four sides. The bottom plate is provided with a cylinder mounting seat (57) in the middle. The cylinder mounting seat (57) is provided with a tensioning cylinder (58) at the upper end. The tensioning cylinder (58) is provided with a tensioning connector (59) at the upper end. The tensioning connecting rods (56) are all provided with tensioning springs (510) at the lower ends. All four tensioning springs (510) are connected to the tensioning connectors (59).

7. The surface flatness cutting system for plastic products according to claim 4, characterized in that: The cutting mechanism (2) includes a lifting module and a cutting module connected to the lifting module. The lifting module includes a support base (21) fixed on the top plate (1) of the worktable. The support base (21) is provided with a linear lifting guide rail (22), a lifting mounting plate (23), and a lifting drive motor (24). The linear lifting guide rail (22) is installed on the end face of the support base (21). The lifting mounting plate (23) is adapted to be installed on the linear lifting guide rail (22) and connected to the lifting drive motor (24). The first and second ends of the linear lifting guide rail (22) are provided with a first sensing plate (25). The side end of the lifting mounting plate (23) is provided with a second sensing plate that matches the first sensing plate (25). The cutting module includes a motor mounting base (26) installed on the end face of the lifting mounting plate (23). A cutting servo motor (27) is provided at the upper end of the motor mounting base (26). A cutting head connecting assembly (28) is provided at the lower end of the cutting servo motor (27). A cutting blade (29) is provided at the lower end of the cutting head connecting assembly (28). A cutting suction hood (210) is provided at the lower end of the motor mounting base (26). The cutting blade (29) is placed inside the cutting suction hood (210). Vacuum discharge pipes (211) are provided at both ends of the cutting suction hood (210). Both vacuum discharge pipes (211) are connected to a vacuum generator. A waste collection box is also provided between the vacuum discharge pipes (211) and the vacuum generator.

8. The surface flatness cutting system for plastic products according to claim 7, characterized in that: The cutting head connecting assembly (28) includes a connecting cylinder (281). The upper end of the connecting cylinder (281) is connected to the output shaft of the cutting servo motor (27), and the lower end of the connecting cylinder (281) is connected to the cutting blade (29). A positioning shaft (282) is provided in the middle of the upper end of the connecting cylinder (281). The positioning shaft (282) does not rotate with the connecting cylinder (281). One end of the positioning shaft (282) extends into the connecting cylinder (281) and is connected to the cutting blade (29). The connecting cylinder (281) is connected to a pressure block (283) inside. A compression spring (284) is provided below the pressure block (283). A fixed pressure shaft (285) is provided at the lower end of the compression spring (284). The lower end of the fixed pressure shaft (285) extends out of the connecting cylinder (281) and is located at the center of the cutting blade (29). A bolt head (4a) is provided at the top center of the fan blade. A tapered hole (286) that matches the bolt head (4a) is provided at the bottom of the fixed pressure shaft (285).

9. The surface flatness cutting system for plastic products according to claim 1, characterized in that: The clamping work plate (3) has a rectangular notch 1 symmetrically arranged in the middle of the front end, and rectangular notches 2 are arranged on both sides of the rear end of the clamping work plate (3). Several pressure plate rollers (13) are arranged on the top plate (1) of the worktable, and each pressure plate roller (13) is in close contact with the rectangular notch 1 or the rectangular notch 2.

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