A kind of engraving and milling CNC machine tool with workpiece automatic feeding and unloading function

Abstract

This invention relates to the field of CNC machining automation technology, and discloses a CNC engraving and milling machine tool with automatic workpiece loading and unloading function. The machine tool includes a main body, a base fixedly connected to the inner wall of the main body, a spindle slide table slidably connected to the top of the base, a pushing cylinder fixedly connected to the bottom of the spindle slide table, and a vacuum suction cylinder on the top of the base. By activating a reciprocating cylinder to extend, a positioning plate and a sponge plate are pushed towards the positioning table, causing the sponge plate to move to the top of the workpiece, thereby fully absorbing the residual cutting fluid on the workpiece surface. After absorption, the reciprocating cylinder retracts, causing the positioning plate and sponge plate to return to their original positions, and the sliding rod to return to its original position. By fully removing the cutting fluid from the workpiece surface, the suction cup of the vacuum suction cylinder can fully adhere to the workpiece, ensuring the stability of the suction and effectively preventing the workpiece from falling during handling.

Description

Technical Field

[0001] This invention relates to the field of CNC machining automation equipment technology, specifically to a CNC engraving and milling machine tool with automatic workpiece loading and unloading function. Background Technology

[0002] The core of a CNC engraving and milling machine tool with automatic workpiece loading and unloading function is to combine high-precision CNC engraving and milling technology with an automated material handling system. It can automatically complete a series of actions such as workpiece gripping, loading, processing and unloading, reducing manual intervention and is a key piece of equipment for improving production efficiency in smart factories.

[0003] When a CNC engraving and milling machine completes the machining of a workpiece and the workpiece is automatically loaded and unloaded, the workpiece surface is often swept by high-pressure gas, and then the workpiece is transported between the machining station and the loading and unloading station by a workpiece suction cup. The cutting fluid used in the machining usually contains oily components, which will form an oil film on the workpiece surface. High-pressure gas may not be able to completely remove it. Residual cutting fluid may cause the suction cup to be unable to fully adhere to the workpiece, affecting the stability of the adsorption. When transporting the workpiece, it may even cause the workpiece to fall off during the transport process. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a CNC engraving and milling machine tool with automatic workpiece loading and unloading function, including a machine tool body, a base fixedly connected to the inner wall of the machine tool body, a spindle slide table slidably connected to the top of the base, and a push cylinder fixedly connected to the bottom of the spindle slide table. A vacuum adsorption cylinder is installed on the top of the base. The bottom of the output end of the push cylinder is fixedly connected to the top of the vacuum adsorption cylinder. A positioning table is fixedly connected to the top of the machine tool body. A mini cylinder is fixedly connected to the top of the positioning table. A support plate is slidably connected to the top of the positioning platform, and the front of the output end of the mini cylinder is fixedly connected to the back of the support plate. It also includes: The feeding mechanism is fixedly mounted on the top of the base; The cleaning mechanism is installed on top of the base; The extrusion mechanism is installed on top of the base; In use, the vacuum adsorption cylinder is first connected to the gas supply pipe of the external vacuum pump, then the workpiece is placed in the feeding mechanism. By starting the machine tool body, the spindle sliding table is moved to bring the vacuum adsorption cylinder closer to the workpiece. Finally, the workpiece is transported to the positioning table through the vacuum adsorption cylinder.

[0005] Preferably, the feeding mechanism includes: The conveying assembly is fixedly mounted on top of the base by fasteners; The fastener includes a limiting platform fixedly connected to the top of the base, and a slide is slidably connected to the top of the limiting platform; The material storage assembly is fixedly mounted on the top of the base.

[0006] Preferably, the cleaning mechanism includes: The cleaning component is fixedly mounted on top of the base by a support member; The support includes a reciprocating cylinder fixedly connected to the top of the base, and a positioning plate is provided on the top of the base; The guide assembly is fixedly mounted on the top of the base.

[0007] Preferably, the extrusion mechanism includes: The lifting assembly is fixedly mounted on top of the base via connectors; The connector includes two spring rods fixedly connected to the top of the base, and a connecting bracket is slidably connected to the outer wall of each spring rod; Push the component to slide it onto the top of the base.

[0008] Preferably, the present invention is a CNC engraving and milling machine tool with automatic workpiece loading and unloading function. Based on the first embodiment, the conveying component includes a guide rail cylinder fixedly connected to the top of the limiting table, and the top of the sliding end of the guide rail cylinder is fixedly connected to the bottom of the slide table. A lifting cylinder is fixedly connected to the top of slide one, and slide two is slidably connected to the inner wall of slide one. The top of the output end of the lifting cylinder is fixedly connected to the bottom of slide two. Specifically, by activating the guide rail cylinder, the slide table one is driven to slide, which in turn drives the lifting cylinder and the slide table two to move synchronously.

[0009] Preferably, the material storage assembly includes four hopper fixing plates fixedly connected to the top of the base, and a side push cylinder is fixedly connected to the side of each of the four hopper fixing plates near the slide table. A positioning sensor is fixedly connected to the front of the limiting table. The process involves placing a batch of workpieces into two fixed hopper plates on the right side. After placement, the guide rail cylinder is activated to move slide one towards the fixed hopper plate on the right side. Once in position, the lifting cylinder is activated to extend and push slide two upward, bringing slide two into contact with the bottom of the workpiece tray. Then, the side push cylinder on the right side is activated to retract, releasing the tray from its fixed position. The lifting cylinder is then activated again to retract, causing slide two and the tray to descend. Once in position, the side push cylinder on the right side is activated again to extend and secure the descending tray. Finally, the guide rail cylinder is activated again to move slide one, slide two, and the tray to the position of the positioning sensor. Then, the machine tool body is started, causing the spindle slide table to move towards the material bin fixing plate, driving the vacuum adsorption cylinder to move until the vacuum adsorption cylinder moves to the top of the slide table two. After it moves into position, the push cylinder is started to extend, pushing the vacuum adsorption cylinder to descend, so that the suction cup of the vacuum adsorption cylinder is in contact with the workpiece on the tray. Then, the external vacuum pump is started to create negative pressure in the vacuum adsorption cylinder to adsorb the workpiece. Then, the push cylinder is started to retract, driving the vacuum adsorption cylinder and the workpiece to rise. After that, the spindle slide table will move away from the material bin fixing plate, so that the vacuum adsorption cylinder moves to the top of the positioning table. Then, the push cylinder is started to extend again, pushing the vacuum adsorption cylinder to descend and placing the workpiece on the top of the positioning table. Then, the external vacuum pump is started again to make the negative pressure in the vacuum adsorption cylinder disappear, canceling the adsorption of the workpiece by the suction cup of the vacuum adsorption cylinder. Then, the push cylinder is started to retract again, driving the vacuum adsorption cylinder to rise back to its position. Afterwards, the mini cylinder is activated to retract and move the support plate, causing the support plate to press against the workpiece on the top of the positioning table and fix the workpiece. Then, the machine tool body is activated, and the spindle in the spindle sliding table performs milling, drilling and other processing on the workpiece. During the cutting process, cutting fluid is sprayed through the water spray pipe. After the workpiece is processed, the cutting fluid and debris on the workpiece surface are blown away through the air jet pipe. Then, the machine tool body can be restarted, causing the spindle slide table to slide the vacuum suction cylinder to the top of the positioning table. Then, the mini cylinder extends, separating the support plate from the workpiece and releasing the workpiece's fixation. Next, the push cylinder extends again, causing the vacuum suction cylinder to descend and suction the workpiece from the top of the positioning table. After suction, the push cylinder retracts, causing the vacuum suction cylinder to rise. The spindle slide table then moves the vacuum suction cylinder to the top of slide two. The push cylinder extends again, pushing the vacuum suction cylinder down to place the processed workpiece in the tray at the top of slide two. Finally, the push cylinder retracts again, allowing the vacuum suction cylinder to descend. The empty adsorption cylinder rises, and then the guide rail cylinder is activated to move slide table one and slide table two towards the material hopper fixing plate on the left. After they are in place, the lifting cylinder is activated again to extend and push slide table two up, so that the tray on top of slide table two rises to the position of the side push cylinder. The side push cylinder on the left is activated to extend and press the tray to fix it. Then, the guide rail cylinder is activated again to move slide table one to the material hopper fixing plate on the right, and the material is loaded again. The above steps are repeated in a cycle to realize continuous operation of loading-processing-unloading until the workpiece is processed. The device automatically stops and alarms to prompt for replenishment.

[0010] Preferably, the cleaning assembly includes a sponge plate rotatably connected to the inner wall of the positioning plate, and the front of the output end of the reciprocating cylinder is fixedly connected to the back of the positioning plate. The left and right outer walls of the sponge board are fixedly connected with spiral springs, and the outer walls of the two spiral springs are fixedly connected to the inner wall of the positioning plate. The front of the sponge board is fixedly connected with sponge, and the material of the sponge is polyurethane sponge. After the workpiece is processed, the jet pipe blows the workpiece, and then the reciprocating cylinder is extended to push the positioning plate and the sponge plate toward the positioning table.

[0011] Preferably, the guide assembly includes two sliding brackets fixedly connected to the top of the base, and sliding rods are slidably connected to the left inner wall and the right inner wall of the positioning plate; The outer walls of the two sliding rods are slidably connected to the inner walls of the two sliding frames, and a spring baffle is slidably connected to the top of the base; When the positioning plate moves, it will drive the sliding rod to move, causing the sliding rod to slide on the inner wall of the sliding frame. The sliding rod can change its height along the inclined surface of the sliding frame.

[0012] Preferably, the lifting assembly includes a protective plate disposed on the top of the base, the left side of the protective plate being fixedly connected to the right side of the left connecting frame; The right side of the protective plate is fixedly connected to the left side of the connecting frame located on the right side, and a pressure roller is rotatably connected to the inner wall of the protective plate. When the sponge board moves, it will be blocked by the pressure roller. The sponge board will also rotate during the movement. When the sponge board rotates, the spiral spring will tighten, allowing the spiral spring to accumulate rebound force. As the sponge board continues to rotate, it will rotate to the top of the pressure roller. As the positioning plate continues to move, the sponge board will separate from the pressure roller, and the rebound force of the spiral spring will be released, causing the sponge board to return to its position. As the positioning plate continues to move, it causes the sponge plate to come into contact with the positioning table. The sponge plate rotates due to the obstruction, allowing the spiral spring to accumulate rebound force. As the positioning plate continues to move, the sponge plate moves to the top of the workpiece. Affected by the rebound force of the spiral spring, the sponge on the surface of the sponge plate fully adheres to the workpiece, thereby fully absorbing the residual cutting fluid on the workpiece surface. This continues until the positioning plate and sponge plate move to the front of the positioning table, fully removing the residual cutting fluid from the top of the workpiece. Then, the reciprocating cylinder is activated to retract, causing the positioning plate and sponge plate to return to their original positions, and the sliding rod to return to its original position.

[0013] Preferably, the pushing component includes two limiting rods slidably connected to the top of the base, and the outer walls of the two limiting rods are slidably connected to a carriage; Both carriages have connecting rods rotatably connected to their backs, and the inner walls of both connecting rods are rotatably connected to the tops of the two connecting frames. During the return process, the sliding rod will contact the carriage, which will push the carriage towards the spring rod, causing the limit rod to move. The carriage will then push the connecting rod to rotate, which will cause the connecting rod to squeeze the connecting frame to descend, causing the protective plate and pressure roller to descend. This will cause the connecting frame to squeeze the spring rod, allowing the spring rod to accumulate rebound force. As the sliding rod continues to move, when it reaches the inclined surface of the carriage, it will move upward under the guidance of the inclined surface. As the positioning plate continues to move, the sliding rod will separate from the carriage during its ascent. At the same time, the sponge plate will contact the spring baffle, the thrust on the carriage will disappear, and the rebound force of the spring rod will be released quickly, pushing the connecting frame upward. When the connecting frame rises back to its original position, it will also drive the protective plate and pressure roller to rise. The pressure roller will come into contact with the sponge on the surface of the sponge board. Due to the obstruction of the spring baffle, the pressure roller will squeeze the sponge to squeeze out the water in the sponge, so that the sponge board maintains a good liquid absorption effect and realizes the recycling of the sponge. By fully removing the cutting fluid from the surface of the workpiece, the suction cup of the vacuum adsorption cylinder can fully adhere to the workpiece, ensuring the stability of adsorption and effectively preventing the workpiece from falling during the handling process. As the positioning plate moves the sponge board towards the positioning table, the sponge board is blocked by the pressure roller. When the sponge board rotates, the side of the sponge board closest to the spring baffle pushes the spring baffle to move, causing the spring baffle to accumulate rebound force. This allows the spiral spring to accumulate rebound force. As the rotation angle of the sponge board increases, the rebound force of the spiral spring will continue to increase, ensuring that the sponge on the surface of the sponge board makes full contact with the pressure roller. The pressure roller will then squeeze the sponge on the sponge board again, squeezing out the residual liquid in the sponge. This effectively prevents the cutting fluid sprayed during workpiece processing from splashing everywhere. Some cutting fluid may splash onto the sponge of the sponge board, where it will absorb the cutting fluid, resulting in a large amount of cutting fluid inside the sponge and affecting the subsequent liquid absorption effect. This ensures that the sponge of the sponge board can fully absorb the residual liquid on the workpiece.

[0014] The present invention has the following beneficial effects: (1) In this invention, by starting the reciprocating cylinder to extend, the positioning plate and the sponge plate are pushed to move towards the positioning table. The sponge plate will move to the top of the workpiece, thereby fully absorbing the residual cutting fluid on the surface of the workpiece. After absorption, the reciprocating cylinder is started to retract, driving the positioning plate and the sponge plate back to their original positions, so that the sliding rod returns to its original position. During the return of the sliding rod, the pushing component will be squeezed, causing the lifting component to descend until the sponge plate contacts the spring baffle. The lifting component will rise, allowing the pressure roller to squeeze the sponge and squeeze out the water in the sponge, so that the sponge plate maintains a good liquid absorption effect and realizes the recycling of the sponge. By fully removing the cutting fluid from the surface of the workpiece, the suction cup of the vacuum adsorption cylinder can fully adhere to the workpiece, ensuring the stability of adsorption and effectively preventing the workpiece from falling during transportation.

[0015] (2) In this invention, when the positioning plate moves the sponge plate toward the positioning table, the sponge plate is blocked by the pressure roller. When the sponge plate rotates, the sponge on the surface of the sponge plate will fully contact the pressure roller through the rebound force of the spiral spring, and squeeze out the residual liquid in the sponge again. This effectively prevents the cutting fluid sprayed during workpiece processing from splashing everywhere. Some cutting fluid will splash onto the sponge position of the sponge plate, and the sponge will absorb the cutting fluid, resulting in more cutting fluid in the sponge, which will affect the subsequent liquid absorption effect. This ensures that the sponge of the sponge plate can fully absorb the residual liquid on the workpiece.

[0016] (3) In this invention, after the positioning plate returns to its original position, the liquid-absorbing side of the sponge will come into contact with the protective plate. The protective plate can shield the liquid-absorbing side of the sponge, thereby preventing the debris generated when the workpiece is cut from coming into contact with the liquid-absorbing side of the sponge. This effectively prevents the debris that splashes during the workpiece cutting from adhering to the surface of the liquid-absorbing side of the sponge, which would cause scratches on the surface of the workpiece when the sponge of the sponge plate comes into contact with the workpiece later. In addition, when the sponge plate separates from the pressure roller, the rebound force of the spiral spring will be released quickly, causing the sponge plate to rotate back to its original position quickly. This will throw out the impurities that are not tightly attached to the surface of the sponge in the sponge plate, effectively preventing the continuous accumulation of impurities on the surface of the sponge, which would block the pores of the sponge, thereby maintaining a good liquid absorption effect and extending the service life of the sponge.

[0017] (4) In this invention, when the positioning plate and the sponge plate move to the front of the positioning table, the reciprocating cylinder is started to retract, and when the positioning plate and the sponge plate return to their original positions, the back of the sponge plate will contact the positioning table. When it is blocked by the positioning table, it will rotate, so that the liquid-absorbing side of the sponge in the sponge plate faces upward, changing the contact surface between the sponge plate and the workpiece. This effectively prevents the sponge that has absorbed the cutting fluid from contacting the workpiece again when it returns to its original position, which would cause the sponge to be squeezed and then re-adhere a small amount of cutting fluid to the surface of the workpiece.

[0018] (5) In this invention, the conveying component moves to the loading position of the storage component, the storage component pushes the workpiece to be processed to the top of the slide table two, the guide rail cylinder pushes the slide table two to the position sensor position, the vacuum suction cylinder will suck up the workpiece and transfer it to the positioning table for processing, after the workpiece is processed, the vacuum suction cylinder sucks up the workpiece and puts it back into the slide table two, the guide rail cylinder pushes the slide table two to the unloading position of the storage component, the storage component will push the processed workpiece back to the unloading position, the slide table two returns to the loading position to continue the loading operation, the above steps are repeated in a cycle to realize the continuous operation of loading-processing-unloading until the workpiece is processed. Upon completion of work, the device automatically stops and alarms to prompt for material replenishment. Through the application of the above structure, the integrated built-in design requires zero additional floor space and has low modification costs: the entire unit is installed inside the machine tool, requiring no additional workshop space, and dual-station parallel operation significantly improves machine tool utilization: it enables parallel operation of the machining station and the loading and unloading station, eliminating waiting time for loading and unloading, greatly improving equipment utilization, increasing production capacity, reducing costs and increasing efficiency, adapting to the internal working conditions of the machine tool, and ensuring high reliability: the entire mechanism adopts a waterproof and chip-proof design, adapting to the harsh environment of cutting fluid and chips inside CNC machine tools, with a low failure rate, long service life, and simple maintenance. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the base portion of the present invention; Figure 4 This is a top view of the silo fixing plate of the present invention; Figure 5 This is a schematic cross-sectional view of the hopper fixing plate of the present invention from the right side. Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle; Figure 7 This is a schematic cross-sectional view of the base of the present invention from the right side; Figure 8 This is a top view of the positioning platform of the present invention; Figure 9 This is a schematic diagram of the right side of the main shaft sliding table of the present invention; Figure 10 This is a cross-sectional view of the positioning plate of the present invention; Figure 11 For the present invention Figure 10 Enlarged view of point B in the middle; Figure 12 This is a schematic diagram of the positioning platform of the present invention from the right side; Figure 13 For the present invention Figure 12 Enlarged view of point C in the middle; Figure 14 This is a schematic diagram of the rear view of the positioning plate of the present invention; Figure 15 This is a schematic diagram of the working process of the sponge board of the present invention; Figure 16 This is a schematic diagram of the working process of the positioning plate of the present invention; Figure 17 This is a schematic diagram of the sponge plate resetting process of the present invention; Figure 18 This is a schematic diagram of the sliding rod reset process of the present invention; Figure 19 This is a schematic diagram of the sliding rod operation of the present invention; Figure 20 This is a schematic diagram of the sponge board rotating according to the present invention; Figure 21 This is a schematic diagram of the working process of the sponge board of the present invention.

[0021] The attached diagram lists the components represented by each number as follows: In the diagram: 1. Feeding mechanism; 11. Conveying assembly; 12. Storage assembly; 13. Machine tool body; 14. Base; 15. Spindle sliding table; 16. Vacuum suction cylinder; 17. Pushing cylinder; 18. Positioning table; 19. Mini cylinder; 111. Limiting table; 112. Slide table one; 113. Guide rail cylinder; 114. Lifting cylinder; 115. Slide table two; 121. Hopper fixing plate; 122. Positioning sensor; 123. Side push cylinder; 2. Cleaning Except for the mechanism; 21, cleaning component; 22, guide component; 211, reciprocating cylinder; 212, positioning plate; 213, sponge plate; 214, spiral spring; 221, sliding frame; 222, sliding rod; 223, spring baffle; 3, extrusion mechanism; 31, lifting component; 32, pushing component; 311, protective plate; 312, pressure roller; 313, connecting frame; 314, spring rod; 321, slide; 322, limit rod; 323, connecting rod. Detailed Implementation

[0022] The technical solutions of 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 of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example 1, please refer to Figures 1-13 The present invention is a CNC engraving and milling machine tool with automatic workpiece loading and unloading function, including a machine tool body 13, a base 14 fixedly connected to the inner wall of the machine tool body 13, a spindle slide table 15 slidably connected to the top of the base 14, and a push cylinder 17 fixedly connected to the bottom of the spindle slide table 15. A vacuum adsorption cylinder 16 is provided on the top of the base 14. The bottom of the output end of the push cylinder 17 is fixedly connected to the top of the vacuum adsorption cylinder 16. A positioning table 18 is fixedly connected to the top of the machine tool body 13. A mini cylinder 19 is fixedly connected to the top of the positioning table 18. A support plate is slidably connected to the top of the positioning stage 18. The front of the output end of the mini cylinder 19 is fixedly connected to the back of the support plate. The specific model of the mini cylinder 19 is CDJP2B6-5D. It also includes: Feeding mechanism 1 is fixedly installed on the top of base 14; Cleaning mechanism 2 is installed on the top of base 14; The extrusion mechanism 3 is installed on the top of the base 14; In use, the vacuum adsorption cylinder 16 is first connected to the gas supply pipe of the external vacuum pump, then the workpiece is placed in the feeding mechanism 1. By starting the machine tool body 13, the spindle sliding table 15 is moved so that the vacuum adsorption cylinder 16 is close to the workpiece. Finally, the workpiece is transported to the positioning table 18 through the vacuum adsorption cylinder 16.

[0024] Feeding mechanism 1 includes: Conveying assembly 11 is fixedly mounted on top of base 14 by fasteners; The fastener includes a limiting platform 111 fixedly connected to the top of the base 14, and a slide table 112 slidably connected to the top of the limiting platform 111. Material storage component 12 is fixedly mounted on the top of base 14.

[0025] Cleaning mechanism 2 includes: Cleaning component 21 is fixedly mounted on the top of base 14 by a support member; The support includes a reciprocating cylinder 211 fixedly connected to the top of the base 14, and a positioning plate 212 is provided on the top of the base 14. Guide component 22 is fixedly mounted on the top of base 14.

[0026] The extrusion mechanism 3 includes: Lifting assembly 31 is fixedly mounted on the top of base 14 via connectors; The connector includes two spring rods 314 fixedly connected to the top of the base 14, and the outer walls of the two spring rods 314 are slidably connected to the connecting brackets 313; Push component 32, push component 32 slides on top of base 14.

[0027] Example 2, please refer to Figures 3-21 The present invention is a CNC engraving and milling machine tool with automatic workpiece loading and unloading function. Based on the first embodiment, the conveying component 11 includes a guide rail cylinder 113 fixedly connected to the top of the limiting table 111, and the top of the sliding end of the guide rail cylinder 113 is fixedly connected to the bottom of the slide table 112. A lifting cylinder 114 is fixedly connected to the top of slide table 112, and slide table 115 is slidably connected to the inner wall of slide table 112. The top of the output end of the lifting cylinder 114 is fixedly connected to the bottom of slide table 115. The specific model of the guide rail cylinder 113 is: M / 146000. Specifically, by activating the guide rail cylinder 113, the slide table 112 is driven to slide, which in turn drives the lifting cylinder 114 and the slide table 115 to move synchronously.

[0028] The material storage assembly 12 includes four hopper fixing plates 121 fixedly connected to the top of the base 14. Each of the four hopper fixing plates 121 is fixedly connected to a side push cylinder 123 on the side near the slide table 112. A positioning sensor 122 is fixedly connected to the front of the limiting table 111. The specific model of the positioning sensor 122 is: XS118BLPAL2. The process involves placing a batch of workpieces into the two hopper fixing plates 121 located on the right side. After placement, the guide rail cylinder 113 is activated to move slide table 112 towards the hopper fixing plate 121 on the right side. Once in position, the lifting cylinder 114 is activated to extend and push slide table 115 upward, so that slide table 115 contacts the bottom of the pallet containing the workpieces. Then, the side push cylinder 123 located on the right side is activated to retract, releasing the fixation of the pallet. The lifting cylinder 114 is then activated to retract, causing slide table 115 and the pallet to descend. Once in position, the side push cylinder 123 located on the right side is activated again to extend and fix the descending pallet. Then, the guide rail cylinder 113 is activated again to move slide table 112, slide table 115, and the pallet to the position of the positioning sensor 122. Then, the machine tool body 13 is started, causing the spindle sliding table 15 to move towards the hopper fixing plate 121, driving the vacuum adsorption cylinder 16 to move until the vacuum adsorption cylinder 16 moves to the top of the sliding table 115. After it moves into position, the push cylinder 17 is started to extend, pushing the vacuum adsorption cylinder 16 to descend, so that the suction cup of the vacuum adsorption cylinder 16 is in contact with the workpiece on the tray. Then, the external vacuum pump is started, so that negative pressure is generated in the vacuum adsorption cylinder 16 to adsorb the workpiece. Then, the push cylinder 17 is started to retract, driving the vacuum adsorption cylinder 16 and the workpiece to rise. After that, the spindle sliding table 15 will move away from the hopper fixing plate 121, so that the vacuum adsorption cylinder 16 moves to the top of the positioning table 18. Then, the push cylinder 17 is started again to extend, pushing the vacuum adsorption cylinder 16 to descend, placing the workpiece on the top of the positioning table 18. Then, the external vacuum pump is started again, so that the negative pressure in the vacuum adsorption cylinder 16 disappears, canceling the adsorption of the workpiece by the suction cup of the vacuum adsorption cylinder 16. Then, the push cylinder 17 is started again to retract, driving the vacuum adsorption cylinder 16 to rise back to its position. Next, the mini cylinder 19 is retracted, causing the support plate to move and press against the workpiece on top of the positioning table 18, thus fixing the workpiece. Then, the machine tool body 13 is started, allowing the spindle in the spindle slide table 15 to perform milling, drilling, and other machining operations on the workpiece. Figure 2 As shown in the position of G, cutting fluid is sprayed through a water spray pipe during the cutting process, such as... Figure 9 As shown in the position of H, after machining the workpiece, the cutting fluid and debris on the workpiece surface are blown away through the jet pipe, as shown in the image. Figure 9 The position of I in the middle is shown; Then, the machine tool body 13 can be restarted, causing the spindle slide table 15 to slide the vacuum adsorption cylinder 16 to the top of the positioning table 18. Then, the mini cylinder 19 is activated to extend, separating the support plate from the workpiece and releasing the workpiece from its fixation. After that, the push cylinder 17 is activated to extend, causing the vacuum adsorption cylinder 16 to descend and adsorb the workpiece on the top of the positioning table 18. After the workpiece is gripped, the push cylinder 17 is activated to retract, causing the vacuum adsorption cylinder 16 to rise. Then, the spindle slide table 15 drives the vacuum adsorption cylinder 16 to move to the top of the slide table 115. Then, the push cylinder 17 is activated again to extend and push the vacuum adsorption cylinder 16 to descend, placing the processed workpiece in the tray on the top of the slide table 115. After that, the push cylinder 17 is activated again to retract, allowing the vacuum adsorption cylinder 16 to descend. The adsorption cylinder 16 rises, and then the guide rail cylinder 113 is activated to drive slide table 112 and slide table 115 to move towards the material storage plate 121 on the left. After they are in place, the lifting cylinder 114 is activated again to extend and push slide table 115 to rise, so that the tray on top of slide table 115 rises to the position of the side push cylinder 123. The side push cylinder 123 on the left is activated to extend and press the tray to fix it. Then, the guide rail cylinder 113 is activated again to move slide table 112 to the position of the material storage plate 121 on the right, and the material is loaded again. The above steps are repeated in a cycle to realize continuous operation of loading-processing-unloading until the workpiece is processed. The device automatically stops and alarms to prompt for replenishment.

[0029] The cleaning component 21 includes a sponge plate 213 rotatably connected to the inner wall of the positioning plate 212, and the front of the output end of the reciprocating cylinder 211 is fixedly connected to the back of the positioning plate 212. The left and right outer walls of the sponge board 213 are fixedly connected with spiral springs 214. The outer walls of the two spiral springs 214 are fixedly connected to the inner wall of the positioning plate 212. The front of the sponge board 213 is fixedly connected with sponge, and the material of the sponge is polyurethane sponge. After the workpiece is processed, the jet pipe blows the workpiece, and then the reciprocating cylinder 211 is extended to push the positioning plate 212 and the sponge plate 213 toward the positioning table 18.

[0030] The guide assembly 22 includes two sliding brackets 221 fixedly connected to the top of the base 14, and sliding rods 222 are slidably connected to the left inner wall and the right inner wall of the positioning plate 212. The outer walls of the two sliding rods 222 are slidably connected to the inner walls of the two sliding frames 221, and the top of the base 14 is slidably connected to a spring baffle 223; When the positioning plate 212 moves, it will drive the sliding rod 222 to move, so that the sliding rod 222 slides on the inner wall of the sliding frame 221. The sliding rod 222 can change its height along the inclined surface of the sliding frame 221.

[0031] The lifting assembly 31 includes a protective plate 311 disposed on the top of the base 14, the left side of the protective plate 311 being fixedly connected to the right side of the left connecting bracket 313; The right side of the protective plate 311 is fixedly connected to the left side of the connecting frame 313 located on the right side, and the inner wall of the protective plate 311 is rotatably connected to the pressure roller 312. When the sponge board 213 moves, it will be blocked by the pressure roller 312, and the sponge board 213 will also rotate during the movement. Figure 20 As shown, when the sponge plate 213 rotates, the spiral spring 214 will tighten, allowing the spiral spring 214 to accumulate rebound force. As the sponge plate 213 continues to rotate, it will rotate to the top of the pressure roller 312, as... Figure 21 As shown, as the positioning plate 212 continues to move, the sponge plate 213 will separate from the pressure roller 312, and the rebound force of the spiral spring 214 will be released, causing the sponge plate 213 to return to its original position. As the positioning plate 212 continues to move, it causes the sponge plate 213 to come into contact with the positioning table 18. The sponge plate 213 rotates due to the obstruction, causing the spiral spring 214 to accumulate rebound force. As the positioning plate 212 continues to move, the sponge plate 213 moves to the top of the workpiece. Influenced by the rebound force of the spiral spring 214, the sponge on the surface of the sponge plate 213 fully adheres to the workpiece. Figure 15 As shown in the position of J, this allows for the full absorption of residual cutting fluid on the workpiece surface until the positioning plate 212 and the sponge plate 213 move to the front of the positioning table 18, as shown. Figure 16 As shown, the residual cutting fluid on the top of the workpiece is thoroughly removed, and then the reciprocating cylinder 211 is activated to retract, driving the positioning plate 212 and the sponge plate 213 back to their original positions, so that the sliding rod 222 returns to its original position.

[0032] The pushing component 32 includes two limiting rods 322 slidably connected to the top of the base 14, and the outer walls of the two limiting rods 322 are slidably connected to a carriage 321; The back of each of the two carriages 321 is rotatably connected to a connecting rod 323, and the inner walls of the two connecting rods 323 are rotatably connected to the top of the two connecting frames 313. During the return process, the sliding rod 222 will come into contact with the carriage 321, such as... Figure 18 As shown, the sliding rod 222 will push the carriage 321 to move towards the spring rod 314, causing the limit rod 322 to move. The carriage 321 will push the connecting rod 323 to rotate, and the connecting rod 323 will squeeze the connecting frame 313 to descend, causing the protective plate 311 and the pressure roller 312 to descend, so that the connecting frame 313 squeezes the spring rod 314, allowing the spring rod 314 to accumulate rebound force. As the sliding rod 222 continues to move, when the sliding rod 222 moves to the inclined position of the carriage 221, as... Figure 14As shown, the sliding rod 222 will move upward as guided by the inclined surface of the sliding frame 221. As the positioning plate 212 continues to move, the sliding rod 222 will separate from the slide frame 321 during the upward process. At the same time, the sponge plate 213 will contact the spring baffle 223, the pushing force on the slide frame 321 will disappear, and the rebound force of the spring rod 314 will be released quickly, pushing the connecting frame 313 upward. When the connecting frame 313 rises back to its original position, it will also drive the protective plate 311 and the pressure roller 312 to rise. The pressure roller 312 will come into contact with the sponge on the surface of the sponge plate 213. Due to the obstruction of the spring baffle 223, the pressure roller 312 will squeeze the sponge to squeeze out the water in the sponge, so that the sponge plate maintains a good liquid absorption effect and realizes the recycling of the sponge. By fully removing the cutting fluid from the surface of the workpiece, the suction cup of the vacuum adsorption cylinder 16 can fully adhere to the workpiece, ensuring the stability of adsorption and effectively preventing the workpiece from falling during the handling process. As the positioning plate 212 moves the sponge plate 213 towards the positioning table 18, the sponge plate 213 is blocked by the pressure roller 312. When the sponge plate 213 rotates, the side of the sponge plate 213 closest to the spring baffle 223 pushes the spring baffle 223 to move, causing the spring baffle 223 to accumulate rebound force. This allows the spiral spring 214 to accumulate rebound force. As the rotation angle of the sponge plate 213 increases, the rebound force of the spiral spring 214 will continue to increase, ensuring that the sponge on the surface of the sponge plate 213 is in full contact with the pressure roller 312. Figure 21 As shown in position K, the pressure roller 312 will squeeze the sponge of the sponge plate 213 again, squeezing out the residual liquid in the sponge. This effectively prevents the cutting fluid from splashing everywhere during workpiece processing. Some cutting fluid will splash onto the sponge of the sponge plate 213, where it will absorb the cutting fluid, resulting in a large amount of cutting fluid inside the sponge and affecting the subsequent liquid absorption effect. This ensures that the sponge of the sponge plate 213 can fully absorb the residual liquid on the workpiece.

[0033] The number of the above structures is not limited. Those skilled in the art can freely set them according to actual needs, as long as the above structures are installed at the connection positions of the corresponding structures.

[0034] A specific application of this embodiment is as follows: When using this invention, the operator first connects the vacuum adsorption cylinder 16 to the gas supply pipe of the external vacuum pump, and then puts the workpieces to be processed into the two hopper fixing plates 121 located on the right side in batches. After the placement is completed, the guide rail cylinder 113 is started to drive the slide table 112 to move towards the hopper fixing plate 121 located on the right side. After it moves into place, the lifting cylinder 114 is started to extend and push the slide table 115 to rise, so that the slide table 115 contacts the bottom of the tray on which the workpiece is placed. Then the side push cylinder 123 located on the right side is started to retract, and the fixation of the tray is released. The lifting cylinder 114 is started to retract again, so that the slide table 115 and the tray descend. After it descends into place, the side push cylinder 123 located on the right side is started to extend again to fix the descending tray. Then the guide rail cylinder 113 is started again to drive the slide table 112, the slide table 115 and the tray to the position of the positioning sensor 122. Then, the machine tool body 13 is started, causing the spindle sliding table 15 to move towards the hopper fixing plate 121, driving the vacuum adsorption cylinder 16 to move until the vacuum adsorption cylinder 16 moves to the top of the sliding table 115. After it moves into position, the push cylinder 17 is started to extend, pushing the vacuum adsorption cylinder 16 to descend, so that the suction cup of the vacuum adsorption cylinder 16 is in contact with the workpiece on the tray. Then, the external vacuum pump is started, so that negative pressure is generated in the vacuum adsorption cylinder 16 to adsorb the workpiece. Then, the push cylinder 17 is started to retract, driving the vacuum adsorption cylinder 16 and the workpiece to rise. After that, the spindle sliding table 15 will move away from the hopper fixing plate 121, so that the vacuum adsorption cylinder 16 moves to the top of the positioning table 18. Then, the push cylinder 17 is started again to extend, pushing the vacuum adsorption cylinder 16 to descend, placing the workpiece on the top of the positioning table 18. Then, the external vacuum pump is started again, so that the negative pressure in the vacuum adsorption cylinder 16 disappears, canceling the adsorption of the workpiece by the suction cup of the vacuum adsorption cylinder 16. Then, the push cylinder 17 is started again to retract, driving the vacuum adsorption cylinder 16 to rise back to its position. Next, the mini cylinder 19 is retracted, causing the support plate to move and press against the workpiece on top of the positioning table 18, thus fixing the workpiece. Then, the machine tool body 13 is started, allowing the spindle in the spindle slide table 15 to perform milling, drilling, and other machining operations on the workpiece. Figure 2 As shown in the position of G, cutting fluid is sprayed through a water spray pipe during the cutting process, such as... Figure 9 As shown in the position of H, after machining the workpiece, the cutting fluid and debris on the workpiece surface are blown away through the jet pipe, as shown in the image. Figure 9 The position of I in the middle is shown; Then, the machine tool body 13 can be restarted, causing the spindle slide table 15 to slide the vacuum adsorption cylinder 16 to the top of the positioning table 18. Then, the mini cylinder 19 is activated to extend, separating the support plate from the workpiece and releasing the workpiece from its fixation. After that, the push cylinder 17 is activated to extend, causing the vacuum adsorption cylinder 16 to descend and adsorb the workpiece on the top of the positioning table 18. After the workpiece is gripped, the push cylinder 17 is activated to retract, causing the vacuum adsorption cylinder 16 to rise. Then, the spindle slide table 15 drives the vacuum adsorption cylinder 16 to move to the top of the slide table 115. Then, the push cylinder 17 is activated again to extend and push the vacuum adsorption cylinder 16 to descend, placing the processed workpiece in the tray on the top of the slide table 115. After that, the push cylinder 17 is activated again to retract, allowing the vacuum adsorption cylinder 16 to descend. The adsorption cylinder 16 rises, and then the guide rail cylinder 113 is activated to drive the slide table 112 and slide table 115 to move towards the material storage plate 121 on the left. After they are in place, the lifting cylinder 114 is activated again to extend and push the slide table 115 to rise, so that the tray on the top of the slide table 115 rises to the position of the side push cylinder 123. The side push cylinder 123 on the left is activated to extend and press the tray to fix it. Then, the guide rail cylinder 113 is activated again to move the slide table 112 to the position of the material storage plate 121 on the right, and the material is loaded again. The above steps are repeated in a cycle to realize continuous operation of loading-processing-unloading until the workpiece is processed. The device automatically stops and alarms to prompt for replenishment. After the workpiece is processed, the air jet blows the workpiece, and then the reciprocating cylinder 211 extends, pushing the positioning plate 212 and the sponge plate 213 towards the positioning table 18. The positioning plate 212 drives the sliding rod 222 to slide within the sliding frame 221. When the sponge plate 213 moves, it is blocked by the pressure roller 312. The sponge plate 213 also rotates during its movement. Figure 20 As shown, when the sponge plate 213 rotates, the spiral spring 214 will tighten, allowing the spiral spring 214 to accumulate rebound force. As the sponge plate 213 continues to rotate, it will rotate to the top of the pressure roller 312, as... Figure 21 As shown, as the positioning plate 212 continues to move, the sponge plate 213 will separate from the pressure roller 312, and the rebound force of the spiral spring 214 will be released, causing the sponge plate 213 to return to its original position. As the positioning plate 212 continues to move, it causes the sponge plate 213 to come into contact with the positioning table 18. The sponge plate 213 rotates due to the obstruction, causing the spiral spring 214 to accumulate rebound force. As the positioning plate 212 continues to move, the sponge plate 213 moves to the top of the workpiece. Influenced by the rebound force of the spiral spring 214, the sponge on the surface of the sponge plate 213 fully adheres to the workpiece. Figure 15 As shown in the position of J, this allows for the full absorption of residual cutting fluid on the workpiece surface until the positioning plate 212 and the sponge plate 213 move to the front of the positioning table 18, as shown. Figure 16As shown, the residual cutting fluid on the top of the workpiece is thoroughly removed, and then the reciprocating cylinder 211 is activated to retract, driving the positioning plate 212 and the sponge plate 213 back to their original positions, so that the sliding rod 222 returns to its original position. During the return process, the sliding rod 222 will contact the carriage 321, such as Figure 18 As shown, the sliding rod 222 will push the carriage 321 to move towards the spring rod 314, causing the limit rod 322 to move. The carriage 321 will push the connecting rod 323 to rotate, and the connecting rod 323 will squeeze the connecting frame 313 to descend, causing the protective plate 311 and the pressure roller 312 to descend, so that the connecting frame 313 squeezes the spring rod 314, allowing the spring rod 314 to accumulate rebound force. As the sliding rod 222 continues to move, when the sliding rod 222 moves to the inclined position of the carriage 221, as... Figure 14 As shown, the sliding rod 222 will move upward as guided by the inclined surface of the sliding frame 221. As the positioning plate 212 continues to move, the sliding rod 222 will separate from the slide frame 321 during the upward process. At the same time, the sponge plate 213 will contact the spring baffle 223, the pushing force on the slide frame 321 will disappear, and the rebound force of the spring rod 314 will be released quickly, pushing the connecting frame 313 upward. When the connecting frame 313 rises back to its original position, it will also drive the protective plate 311 and the pressure roller 312 to rise. The pressure roller 312 will come into contact with the sponge on the surface of the sponge plate 213. Due to the obstruction of the spring baffle 223, the pressure roller 312 will squeeze the sponge to squeeze out the water in the sponge, so that the sponge plate maintains a good liquid absorption effect and realizes the recycling of the sponge. By fully removing the cutting fluid from the surface of the workpiece, the suction cup of the vacuum adsorption cylinder 16 can fully adhere to the workpiece, ensuring the stability of adsorption and effectively preventing the workpiece from falling during the handling process. As the positioning plate 212 moves the sponge plate 213 towards the positioning table 18, the sponge plate 213 is blocked by the pressure roller 312. When the sponge plate 213 rotates, the side of the sponge plate 213 closest to the spring baffle 223 pushes the spring baffle 223 to move, causing the spring baffle 223 to accumulate rebound force. This allows the spiral spring 214 to accumulate rebound force. As the rotation angle of the sponge plate 213 increases, the rebound force of the spiral spring 214 will continue to increase, ensuring that the sponge on the surface of the sponge plate 213 is in full contact with the pressure roller 312. Figure 21 As shown in position K, the pressure roller 312 will squeeze the sponge of the sponge plate 213 again, squeezing out the residual liquid in the sponge again. This effectively prevents the cutting fluid sprayed during workpiece processing from splashing everywhere. Some cutting fluid will splash onto the sponge position of the sponge plate 213, and the sponge will absorb the cutting fluid, resulting in a lot of cutting fluid in the sponge, which will affect the subsequent liquid absorption effect. This ensures that the sponge of the sponge plate 213 can fully absorb the residual liquid on the workpiece. As the positioning plate 212 moves towards the positioning platform 18, causing the sliding rod 222 to move, the arc surface of the sliding rod 222 will contact the arc surface of the carriage 321 as the sliding rod 222 continues to move. Figure 19 As shown, the sliding rod 222 will press the slide 321 down, causing the connecting rod 323 and the connecting frame 313 to fall, allowing the spring rod 314 to accumulate rebound force, so that the sliding rod 222 can move smoothly towards the positioning table 18. Secondly, after the positioning plate 212 returns to its original position and the pressure roller 312 squeezes the sponge on the surface of the sponge plate 213, the sponge will automatically spring back to its original position. The liquid-absorbing side of the sponge will come into contact with the protective plate 311. The protective plate 311 can shield the liquid-absorbing side of the sponge, thereby preventing the debris generated when the workpiece is being cut from coming into contact with the liquid-absorbing side of the sponge. This effectively prevents the debris that splashes during the workpiece cutting from adhering to the surface of the liquid-absorbing side of the sponge, which would cause scratches on the surface of the workpiece when the sponge of the sponge plate 213 comes into contact with the workpiece later. In addition, during the movement of the positioning plate 212 toward the positioning table 18, when the sponge plate 213 separates from the pressure roller 312, the rebound force of the spiral spring 214 will be released quickly, causing the sponge plate 213 to rotate back to its original position quickly. With the sponge plate 213 rotating at a large angle, the impurities that are not tightly attached to the surface of the sponge in the sponge plate 213 will be thrown out, effectively preventing the continuous accumulation of impurities on the surface of the sponge, which would block the pores of the sponge, thereby maintaining a good liquid absorption effect and extending the service life of the sponge. Secondly, when the positioning plate 212 and the sponge plate 213 move to the front of the positioning platform 18, as Figure 16 As shown, at this time, when the reciprocating cylinder 211 retracts, driving the positioning plate 212 and the sponge plate 213 back to their original positions, the back of the sponge plate 213 will contact the positioning table 18. Obstructed by the positioning table 18, it will rotate, causing the liquid-absorbing side of the sponge in the sponge plate 213 to face upwards, as shown. Figure 17 As shown, by changing the contact surface between the sponge plate 213 and the workpiece, it is possible to effectively prevent the sponge that has absorbed the cutting fluid from returning to its original position and then coming into contact with the workpiece again, which would cause the sponge to be squeezed and then re-adhere a small amount of cutting fluid to the surface of the workpiece.

[0035] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A CNC engraving and milling machine tool with automatic workpiece loading and unloading function, comprising a machine tool body (13), a base (14) fixedly connected to the inner wall of the machine tool body (13), a spindle slide table (15) slidably connected to the top of the base (14), and a push cylinder (17) fixedly connected to the bottom of the spindle slide table (15). The base (14) is provided with a vacuum adsorption cylinder (16) at the top. The bottom of the output end of the push cylinder (17) is fixedly connected to the top of the vacuum adsorption cylinder (16). The machine tool body (13) is fixedly connected with a positioning table (18) at the top. The positioning table (18) is fixedly connected with a mini cylinder (19) at the top. A support plate is slidably connected to the top of the positioning platform (18), and the front of the output end of the mini cylinder (19) is fixedly connected to the back of the support plate. The characteristic of this design is that... Also includes: Feeding mechanism (1), which is fixedly mounted on the top of base (14); A cleaning mechanism (2) is installed on the top of the base (14); An extrusion mechanism (3) is installed on the top of the base (14); In use, the vacuum adsorption cylinder (16) is first connected to the gas supply pipe of the external vacuum pump, and then the workpiece is placed in the feeding mechanism (1). By starting the machine tool body (13), the spindle sliding table (15) is moved so that the vacuum adsorption cylinder (16) gets close to the workpiece. Finally, the workpiece is transported to the positioning table (18) through the vacuum adsorption cylinder (16).

2. The CNC engraving and milling machine tool with automatic workpiece loading and unloading function according to claim 1, characterized in that: The feeding mechanism (1) includes: A conveying assembly (11) is fixedly mounted on top of a base (14) by means of fasteners; The fastener includes a limiting platform (111) fixedly connected to the top of the base (14), and a sliding platform (112) is slidably connected to the top of the limiting platform (111). Material storage component (12) is fixedly disposed on the top of base (14).

3. A CNC engraving and milling machine tool with automatic workpiece loading and unloading function according to claim 2, characterized in that: The cleaning mechanism (2) includes: Cleaning component (21), which is fixedly mounted on the top of base (14) by a support member; The support includes a reciprocating cylinder (211) fixedly connected to the top of the base (14), and a positioning plate (212) is provided on the top of the base (14). Guide component (22), which is fixedly mounted on the top of base (14).

4. A CNC engraving and milling machine tool with automatic workpiece loading and unloading function according to claim 3, characterized in that: The extrusion mechanism (3) includes: Lifting assembly (31), which is fixedly mounted on the top of the base (14) by means of a connector; The connector includes two spring rods (314) fixedly connected to the top of the base (14), and the outer walls of the two spring rods (314) are slidably connected to a connecting frame (313). A push component (32) is slidably disposed on top of a base (14).

5. A CNC engraving and milling machine tool with automatic workpiece loading and unloading function according to claim 4, characterized in that: The conveying assembly (11) includes a guide rail cylinder (113) fixedly connected to the top of the limiting platform (111), and the top of the sliding end of the guide rail cylinder (113) is fixedly connected to the bottom of the slide table (112). A lifting cylinder (114) is fixedly connected to the top of the first slide (112), and a second slide (115) is slidably connected to the inner wall of the first slide (112). The top of the output end of the lifting cylinder (114) is fixedly connected to the bottom of the second slide (115). In this process, the guide rail cylinder (113) drives the slide table one (112) to slide, which in turn drives the lifting cylinder (114) and the slide table two (115) to move synchronously.

6. A CNC engraving and milling machine tool with automatic workpiece loading and unloading function according to claim 5, characterized in that: The storage assembly (12) includes four hopper fixing plates (121) fixedly connected to the top of the base (14). Each of the four hopper fixing plates (121) is fixedly connected to a side push cylinder (123) on the side near the slide table (112). A positioning sensor (122) is fixedly connected to the front of the limiting table (111). The two hopper fixing plates (121) on the right side are combined to form a loading station, and the two hopper fixing plates (121) on the left side are combined to form a unloading station.

7. A CNC engraving and milling machine tool with automatic workpiece loading and unloading function according to claim 4, characterized in that: The cleaning assembly (21) includes a sponge plate (213) rotatably connected to the inner wall of the positioning plate (212), and the front of the output end of the reciprocating cylinder (211) is fixedly connected to the back of the positioning plate (212). The left and right outer walls of the sponge board (213) are fixedly connected with spiral springs (214), and the outer walls of the two spiral springs (214) are fixedly connected to the inner wall of the positioning plate (212). The front of the sponge board (213) is fixedly connected with sponge, and the material of the sponge is polyurethane sponge. In this process, the reciprocating cylinder (211) is extended to push the positioning plate (212) and the sponge plate (213) toward the positioning platform (18).

8. A CNC engraving and milling machine tool with automatic workpiece loading and unloading function according to claim 7, characterized in that: The guide assembly (22) includes two sliding brackets (221) fixedly connected to the top of the base (14), and sliding rods (222) are slidably connected to the left inner wall and the right inner wall of the positioning plate (212). The outer walls of the two sliding rods (222) are slidably connected to the inner walls of the two sliding frames (221), and the top of the base (14) is slidably connected to a spring baffle (223). When the positioning plate (212) moves, it will drive the sliding rod (222) to move, so that the sliding rod (222) slides on the inner wall of the sliding frame (221). The sliding rod (222) can change its height along the slope of the sliding frame (221).

9. A CNC engraving and milling machine tool with automatic workpiece loading and unloading function according to claim 4, characterized in that: The lifting assembly (31) includes a protective plate (311) disposed on the top of the base (14), the left side of the protective plate (311) being fixedly connected to the right side of the left connecting frame (313); The right side of the protective plate (311) is fixedly connected to the left side of the connecting frame (313) located on the right side, and the inner wall of the protective plate (311) is rotatably connected to the pressure roller (312).

10. A CNC engraving and milling machine tool with automatic workpiece loading and unloading function according to claim 9, characterized in that: The pushing assembly (32) includes two limiting rods (322) slidably connected to the top of the base (14), and the outer walls of the two limiting rods (322) are slidably connected to a carriage (321). Both of the slides (321) have connecting rods (323) rotatably connected to their back sides, and the inner walls of both connecting rods (323) are rotatably connected to the top of the two connecting frames (313).

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