Numerical control machine tool with automatic feeding and discharging functions

Abstract

The invention discloses an automatic feeding and discharging numerical control machine tool, and belongs to the technical field of machine tools. Comprising a machine body, a main shaft is arranged on the machine body, a moving mechanism is arranged on the machine body, a movable block is arranged on the moving mechanism, the moving mechanism is used for driving the movable block to move, a plurality of conveying blocks are arranged on the machine body, two first placing grooves are formed in each conveying block, and workpieces are arranged in the first placing grooves; the workpiece is clamped by starting the chuck, then the first electric push rod is started to release clamping of the current workpiece, then the first motor is started to enable the fixed block to be far away from the workpiece, and then the workpiece is mounted on the chuck; the feeding work of the numerical control machine tool is achieved, the feeding efficiency is high, manual feeding is not needed, workpieces can be automatically fed and discharged, operation is easy, the working efficiency is high, manpower is saved, and therefore the practicability of the numerical control machine tool is improved.

Description

Technical Field

[0001] This invention relates to a CNC machine tool with automatic loading and unloading, belonging to the field of machine tool technology. Background Technology

[0002] Currently, CNC machine tools are automated machine tools equipped with a program control system. They can logically process programs with control codes or other symbolic instructions, and after calculation, issue various control signals to control the actions of various parts of the machine tool, enabling precise and fast machining.

[0003] In the traditional field of CNC machine tool processing, loading and unloading operations mainly rely on manual labor. Operators need to place the workpieces to be processed one by one onto the chuck of the machine tool spindle. After processing, the finished workpieces are removed from the chuck and placed in the designated storage area. This manual loading and unloading method takes time to pick up and place the workpieces, which is relatively labor-intensive. In addition, the machine tool downtime is relatively long, which reduces the actual processing time of the machine tool and thus makes the production efficiency of CNC machine tools low.

[0004] Therefore, a new solution is needed to address this problem. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an automatic loading and unloading CNC machine tool, which solves the problem that in the traditional CNC machine tool processing field, loading and unloading operations mainly rely on manual labor, which is relatively labor-intensive and the machine tool has a long downtime, resulting in a reduced proportion of actual processing time and thus low production efficiency of CNC machine tools.

[0006] The technical problem to be solved by the present invention is achieved by the following technical solution: an automatic loading and unloading CNC machine tool, including a machine body, a spindle provided on the machine body, a moving mechanism provided on the machine body, a movable block provided on the moving mechanism, and the moving mechanism is used to drive the movable block to move. The machine body is equipped with multiple conveying blocks, and two first placement slots are opened on the conveying blocks. Workpieces are placed in the first placement slots. The machine body is equipped with a material transfer mechanism, which is used to drive the workpiece to move. A cylinder is fixedly installed on the movable block. A support block is fixedly connected to the telescopic end of the cylinder. A fixed block is set on the support block. A material picking mechanism is set on the fixed block, which is used to grab the workpiece. An inclined protective plate is fixedly connected to the machine body. A limiting groove is opened through the protective plate, and a sliding groove is opened in the limiting groove. A sliding plate is slidably connected in the sliding groove. A cleaning mechanism is provided on the protective plate. The cleaning mechanism is used to clean the debris that falls off the workpiece on the sliding plate during processing.

[0007] The present invention is further configured such that: the moving mechanism includes a first threaded rod rotatably connected to the machine body, a positioning rod fixedly connected to the machine body, a first motor fixedly installed on one side of the machine body, the output end of the first motor being poweredly connected to one end of the first threaded rod, a movable block being threadedly installed on the first threaded rod, and the movable block being slidably sleeved on the positioning rod.

[0008] By adopting the above technical solution, when the first motor is started, the first motor drives the first threaded rod to rotate. During the rotation of the first threaded rod, the movable block slides left and right along the positioning rod. During the movement of the movable block, the cylinder, support block and fixed block move synchronously.

[0009] The invention is further configured such that: the material conveying mechanism includes two support frames fixedly connected to opposite sides of the machine body; a positioning groove is provided through the machine body; a support shaft is rotatably connected to each of the two support frames; two sprockets are fixedly connected to the support shafts; a conveyor chain is meshed between the two sprockets; a conveying block is fixedly connected between the two conveyor chains; a guide plate is fixedly installed on any support frame; a second motor is fixedly installed on the support frame; the output end of the second motor is poweredly connected to any end of one of the support shafts; and a collection frame is fixedly installed on one side of the machine body.

[0010] By adopting the above technical solution, the second motor is started to drive the support shaft connected to it to rotate. Under the meshing action of the sprocket and the conveyor chain, the conveyor block is driven to move from right to left for conveying. The workpiece is placed on the first placement slot, so that the workpiece can move from right to left with the conveyor chain.

[0011] The present invention is further configured such that: the material handling mechanism includes two second placement slots opened on the side of the fixed block away from the support block; two fixed slots are opened on the side of the fixed block away from the support block; the fixed slots communicate with the second placement slots; a connecting slider is slidably connected to the fixed block; the two ends of the connecting slider pass through the two fixed slots and are fixedly connected to fixed arc blocks; connecting slots are opened on opposite sides of the fixed block; connecting blocks are fixedly connected to the connecting slots on opposite sides of the connecting slider; a first electric push rod is fixedly connected to the fixed block; and the telescopic end of the first electric push rod is fixedly connected to the connecting block.

[0012] The invention is further configured such that: a rotating block is provided on the support block, a support rod is fixedly connected to the rotating block, the end of the support block away from the movable block is hinged to the support rod, a positioning frame is fixedly connected to the fixed block, a second threaded rod is rotatably connected between the opposite sides of the positioning frame, a third motor is fixedly installed on one side of the positioning frame, one end of the second threaded rod passes through the positioning frame and is poweredly connected to the rotating end of the third motor, the end of the rotating block away from the support block extends into the positioning frame and is threadedly connected to the second threaded rod, and a rotating mechanism is provided on the rotating block, which can drive the rotating block to rotate axially around the support rod.

[0013] The invention is further configured such that: the rotating mechanism includes a conversion plate fixedly connected to the movable block, a guide groove is provided through the conversion plate, a rotating arc groove communicating with the guide groove is provided through the conversion plate, and a conversion rod that can be inserted into the guide groove is fixedly connected to the rotating block.

[0014] By adopting the above technical solution, the starting cylinder can drive the support block, rotating block, positioning frame, and fixing block to move up and down. When the conveying block and the limiting groove are aligned, the starting cylinder drives the fixing block to move downward, so that the fixing block extends out of the lower side of the protective plate through the limiting groove, and the two workpieces placed on the conveying block are fitted into the two second placement grooves. At this time, the first electric push rod is activated, which drives the connecting block to slide in the connecting groove, thereby driving the connecting slider and the two fixed arc blocks to move back and forth. When the two fixed arc blocks move backward, the fixed arc block located on the rear side can clamp the workpiece located on the rear side between the fixed arc block and the inner wall of the corresponding second placement groove, thereby clamping and fixing the workpiece located on the rear side. At this time, the starting cylinder can drive the workpiece located on the rear side to move upward and pull the workpiece out of the first placement groove. Similarly, when the first electric actuator moves the connecting block forward, it can clamp the workpiece located on the front side and simultaneously release the workpiece located on the rear side. This allows the picking and unloading of the two workpieces to be carried out simultaneously, improving the efficiency of loading and unloading, and thus improving the processing efficiency of the CNC machine tool.

[0015] In this design, a three-jaw chuck or a four-jaw chuck can be installed on the spindle. Initially, the rotating block is vertical. When the first electric actuator clamps any workpiece, the cylinder moves the workpiece upwards. This process not only moves the workpiece through the limiting groove to the upper side of the protective plate, but also causes the conversion rod to slide into the guide groove. As the workpiece continues to move upwards until the axis of the support rod coincides with the axis of the rotating arc groove, the conversion rod slides into the rotating arc groove. As the conversion rod continues to move upwards, it slides within the rotating arc groove. During this process, the rotating block rotates around the axis of the support rod. Simultaneously, the positioning frame and the fixing block rotate around the axis of the support rod. When the conversion rod rotates to abut against the end of the rotating arc groove furthest from the guide groove, the fixing block rotates 90 degrees, making the rotating block horizontal. At this point, the workpiece... When the axis of the chuck on the main spindle is at the same height as the axis of the workpiece, starting the third motor drives the second threaded rod to rotate. Because the rotating block is threadedly connected to the second threaded rod, the rotation of the second threaded rod drives the positioning frame and the fixed block to move back and forth. When the clamped workpiece moves back and forth so that the axis of the workpiece coincides with the axis of the chuck on the main spindle, starting the first motor drives the workpiece to move closer to the chuck and insert the workpiece into the chuck. At this time, the chuck clamps the workpiece. Then, starting the first electric push rod releases the clamping of the current workpiece and starts the first motor to move the fixed block away from the workpiece, thus completing the installation of the workpiece on the chuck and realizing the loading of the CNC machine tool. The loading efficiency is high, no manual loading is required, saving manpower and improving the working efficiency of the CNC machine tool.

[0016] Similarly, after the workpiece is processed by the machine body, the first electric push rod is activated to clamp the workpiece. Then, the chuck is activated to release the workpiece from the clamp. Next, the first motor and cylinder are activated, which moves the workpiece away from the spindle and moves the fixed block downward, thereby causing the fixed block to rotate 90 degrees in the opposite direction to return to the initial state. Then, the workpiece is placed into the appropriate first placement slot through the limiting slot, thus completing the workpiece unloading operation. The operation is simple, the loading and unloading are automatic, the work efficiency is high, and the manpower is saved, thereby improving the practicality of CNC machine tools.

[0017] The invention is further configured such that: positioning boxes are fixedly connected to both sides of the support block, both ends of the support rod penetrate into the positioning boxes, a spring is provided inside the positioning box, the inner end of the spring is fixedly connected to the support rod, and the outer end of the spring is fixedly connected to the inner arm of the positioning box.

[0018] By adopting the above technical solution, the mainspring provides support and positioning for the support rod, rotating block, and fixed block. In the initial state, the rotating block is vertical. With the support of the mainspring, the rotating block is prevented from shaking during its up-and-down movement, thus allowing the conversion rod to be smoothly inserted into the guide slot.

[0019] The invention is further configured such that: a mounting cavity is provided inside the protective plate, and a second electric push rod is fixedly installed inside the mounting cavity, with the telescopic end of the second electric push rod fixedly connected to one side of the sliding plate.

[0020] By adopting the above technical solution, before processing the workpiece, the second electric actuator is activated to push the sliding plate to block the limiting groove, preventing the debris generated during workpiece processing from falling into the first placement groove through the limiting groove. The protective plate receives the debris during the workpiece processing, preventing the debris from affecting the meshing between the conveyor chain and the sprocket, and also ensuring the cleanliness of the conveyor block, thereby improving the practicality of the CNC machine tool.

[0021] The invention is further configured such that: the cleaning mechanism includes a limiting rod rotatably connected to the protective plate; a cleaning brush is fixedly connected to one end of the limiting rod near the fixed block; the cleaning brush abuts against the side of the protective plate near the fixed block; a swing block is fixedly connected to the end of the limiting rod away from the cleaning brush; a third electric push rod is fixedly installed on the side of the protective plate away from the fixed block; a limit arm is fixedly connected to the telescopic end of the third electric push rod; a linkage rod is rotatably connected to the end of the swing block away from the limiting rod; a connecting groove is opened on the side of the linkage rod away from the swing block; and the limit arm is slidably inserted into the connecting groove.

[0022] By adopting the above technical solution, when the third electric actuator is activated, it can drive the limiting arm to move left and right. During the left and right movement of the limiting arm, it slides in the connecting groove and drives the linkage rod to move left and right. During this process, it drives the swing block and the limiting rod to rotate axially around the limiting rod as the center, and then synchronously drives the cleaning brush to rotate axially to clean the upper surface of the sliding plate. Because the protective plate is set at an angle, the debris generated by the workpiece falling on the sliding plate will fall off with the reciprocating cleaning of the cleaning brush, thereby preventing the debris on the sliding plate from falling into the first placement groove when the sliding plate is opened, and preventing the debris from affecting the insertion of the workpiece into the first placement groove, thereby improving the practicality of the CNC machine tool.

[0023] The beneficial effects of this invention are: a three-jaw chuck or a four-jaw chuck can be installed on the main spindle. Initially, the rotating block is in a vertical position. When the first electric actuator clamps any workpiece, the cylinder moves the workpiece upwards. During this process, the workpiece not only moves through the limiting groove to the upper side of the protective plate, but also causes the conversion rod to slide into the guide groove. As the workpiece continues to move upwards until the axis of the support rod coincides with the axis of the rotating arc groove, the conversion rod slides into the rotating arc groove. As the conversion rod continues to move upwards, it slides within the rotating arc groove. During this process, the rotating block rotates around the axis of the support rod, and simultaneously, the positioning frame and the fixing block rotate around the axis of the support rod. When the conversion rod rotates to abut against the end of the rotating arc groove furthest from the guide groove, the fixing block rotates 90 degrees, making the rotating block horizontal. At this point, the workpiece and the axis of the chuck on the main spindle are at the same height. Then, the third motor is started. The rotating block can drive the second threaded rod to rotate. Because the rotating block is threadedly connected to the second threaded rod, the rotation of the second threaded rod drives the positioning frame and the fixed block to move back and forth. When the clamped workpiece moves back and forth so that the axis of the workpiece coincides with the axis of the chuck on the main spindle, the first motor is started to drive the workpiece to move closer to the chuck and insert the workpiece into the chuck. At this time, the chuck is started to clamp the workpiece. Then, the first electric push rod is started to release the clamping of the current workpiece, and the first motor is started to move the fixed block away from the workpiece, thus completing the installation of the workpiece on the chuck and realizing the loading of the CNC machine tool. The loading efficiency is high, and no manual loading is required, saving manpower and improving the working efficiency of the CNC machine tool. Similarly, this solution can automatically load and unload workpieces. It is simple to operate, has high working efficiency, saves manpower, and thus improves the practicality of the CNC machine tool. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the conversion plate structure of the present invention; Figure 3 This is a schematic diagram of the positioning frame structure of the present invention; Figure 4 This is a schematic diagram of the bottom structure of the fixing block of the present invention; Figure 5 This is a schematic diagram of the rotating block structure of the present invention; Figure 6 This is a schematic diagram of the transmission chain structure of the present invention; Figure 7 This is a schematic diagram of the protective plate structure of the present invention; Figure 8 This is a schematic diagram of the linkage structure of the present invention.

[0025] In the picture: 1. Machine body; 2. Main shaft; 3. Protective plate; 4. First threaded rod; 5. First motor; 6. Positioning rod; 7. Movable block; 8. Cylinder; 9. Support frame; 10. Second motor; 11. Sprocket; 12. Conveyor chain; 13. Conveyor block; 14. Conversion plate; 15. Positioning groove; 16. Guide groove; 17. Rotating arc groove; 18. Conversion rod; 19. Support block; 20. Positioning box; 21. Rotating block; 22. Fixed block; 23. Positioning frame; 24. Second threaded rod; 25. Third motor; 26. 27. First electric actuator; 28. Connecting groove; 29. ​​Connecting block; 20. First placement groove; 31. Workpiece; 32. Support shaft; 33. Guide plate; 34. Collection frame; 35. Sliding groove; 36. Sliding plate; 37. Second electric actuator; 38. Limiting groove; 39. Cleaning brush; 40. Limiting rod; 41. Third electric actuator; 42. Limiting arm; 43. Linkage rod; 44. Swing block; 45. Spring; 46. Support rod; 47. Second placement groove; 48. Fixing groove; 49. Connecting slider; 40. Fixing arc block. Detailed Implementation

[0026] To facilitate a clear understanding of the technical means, inventive features, objectives, and effects of this invention, the following detailed description is provided. Figures 1 to 8 The invention will be further illustrated as shown.

[0027] like Figures 1 to 3 As shown, the present invention is a CNC machine tool for automatic loading and unloading, including a machine body 1, a spindle 2 disposed on the machine body 1, a moving mechanism disposed on the machine body 1, a movable block 7 disposed on the moving mechanism, and the moving mechanism is used to drive the movable block 7 to move. The machine body 1 is provided with multiple conveying blocks 13, and two first placement slots 29 are opened on the conveying blocks 13. The first placement slots 29 are provided with workpieces 30. The machine body 1 is provided with a material transfer mechanism, which is used to drive the workpieces 30 to move. A cylinder 8 is fixedly installed on the movable block 7. The telescopic end of the cylinder 8 is fixedly connected to a support block 19. A fixed block 22 is provided on the support block 19. A material picking mechanism is provided on the fixed block 22, which is used to pick up the workpieces 30. An inclined protective plate 3 is fixedly connected to the machine body 1. A limiting groove 37 is opened through the protective plate 3. A sliding groove 34 is opened in the limiting groove 37. A sliding plate 35 is slidably connected in the sliding groove 34. The protective plate 3 is located on the upper side of the material transfer mechanism. A cleaning mechanism is provided on the protective plate 3. The cleaning mechanism is used to clean the debris that falls off the workpiece 30 when it is being processed on the sliding plate 35.

[0028] like Figure 1As shown, the moving mechanism includes a first threaded rod 4 rotatably connected to the body 1, a positioning rod 6 fixedly connected to the body 1, a first motor 5 fixedly installed on one side of the body 1, the output end of the first motor 5 being poweredly connected to one end of the first threaded rod 4, a movable block 7 threadedly installed on the first threaded rod 4, the first threaded rod 4 passing through the movable block 7, the first threaded rod 4 being parallel to the axis of the positioning rod 6, and the movable block 7 being slidably sleeved on the positioning rod 6.

[0029] When the first motor 5 is started, the first motor 5 drives the first threaded rod 4 to rotate. During the rotation of the first threaded rod 4, the movable block 7 slides left and right along the positioning rod 6. During the movement of the movable block 7, the cylinder 8, the support block 19 and the fixed block 22 move synchronously.

[0030] like Figure 6 As shown, the material conveying mechanism includes two support frames 9 fixedly connected to opposite sides of the machine body 1. A positioning groove 15 is provided through the machine body 1. Support shafts 31 are rotatably connected to both support frames 9. Two sprockets 11 are fixedly connected to the support shafts 31. A conveyor chain 12 is meshed between the two sprockets 11. A conveyor block 13 is fixedly connected between the two conveyor chains 12. A guide plate 32 is fixedly installed on any support frame 9. A second motor 10 is fixedly installed on the support frame 9. The output end of the second motor 10 is poweredly connected to either end of one of the support shafts 31. The conveyor chain 12 passes through the positioning groove 15 into the machine body 1. A collection frame 33 is fixedly installed on one side of the machine body 1.

[0031] When in use, the second motor 10 is started to drive the support shaft 31 connected to it to rotate. Under the meshing action of the sprocket 11 and the conveyor chain 12, the conveyor block 13 is driven to move from right to left to convey the workpiece 30 and place it on the first placement slot 29. This allows the workpiece 30 to move from right to left with the conveyor chain 12.

[0032] like Figures 1 to 5 As shown, the material handling mechanism includes two second placement slots 46 on the side of the fixed block 22 away from the support block 19. Two fixed slots 47 are provided on the side of the fixed block 22 away from the support block 19. The fixed slots 47 communicate with the second placement slots 46. A connecting slider 48 is slidably connected to the fixed block 22. The two ends of the connecting slider 48 pass through the two fixed slots 47 and are fixedly connected to fixed arc blocks 49. The two fixed arc blocks 49 are arranged in opposite directions. Connecting slots 27 are provided on both opposite sides of the fixed block 22. Connecting blocks 28 are fixedly connected to the opposite sides of the connecting slider 48 and are slidably connected to the connecting slots 27. The connecting blocks 28 extend out of the outside of the fixed block 22 through the connecting slots 27. A first electric push rod 26 is fixedly connected to the fixed block 22. The telescopic end of the first electric push rod 26 is fixedly connected to the connecting block 28.

[0033] like Figures 1 to 5As shown, a rotating block 21 is provided on the support block 19, and a support rod 45 is fixedly connected to the rotating block 21. The end of the support block 19 away from the movable block 7 is hinged to the support rod 45. A positioning frame 23 is fixedly connected to the fixed block 22. A second threaded rod 24 is rotatably connected between the opposite sides of the positioning frame 23. A third motor 25 is fixedly installed on one side of the positioning frame 23. One end of the second threaded rod 24 passes through the positioning frame 23 and is poweredly connected to the rotating end of the third motor 25. The end of the rotating block 21 away from the support block 19 extends into the positioning frame 23 and is threadedly connected to the second threaded rod 24. The second threaded rod 24 is threaded through the rotating block 21. The rotating block 21 is slidably connected in the positioning frame 23. A rotating mechanism is provided on the rotating block 21. The rotating mechanism can drive the rotating block 21 to rotate axially around the support rod 45.

[0034] like Figures 3 to 5 As shown, the rotating mechanism includes a conversion plate 14 fixedly connected to the movable block 7. A guide groove 16 is provided through the conversion plate 14. The guide groove 16 extends out of the conversion plate 14 near the protective plate 3. A rotating arc groove 17 communicating with the guide groove 16 is provided through the conversion plate 14. A conversion rod 18 that can be inserted into the guide groove 16 is fixedly connected to the rotating block 21.

[0035] In use, the starting cylinder 8 can drive the support block 19, rotating block 21, positioning frame 23, and fixing block 22 to move up and down. When the conveying block 13 and the limiting groove 37 are aligned, the starting cylinder 8 drives the fixing block 22 to move downward, so that the fixing block 22 extends out of the lower side of the protective plate 3 through the limiting groove 37, and the two workpieces 30 placed on the conveying block 13 are fitted into the two second placement grooves 46. At this time, the first electric push rod 26 is activated, which drives the connecting block 28 to slide in the connecting groove 27, thereby driving the connecting slider 48 and the two fixed arc blocks 49 to move back and forth. When the two fixed arc blocks 49 move backward, the fixed arc block 49 located on the rear side can clamp the workpiece 30 located on the rear side between the fixed arc block 49 and the inner wall of the corresponding second placement groove 46, thereby clamping and fixing the workpiece 30 located on the rear side. At this time, the starting cylinder 8 can drive the workpiece 30 located on the rear side to move upward and pull the workpiece 30 out of the first placement groove 29. Similarly, when the first electric actuator 26 is activated to move the connecting block 28 forward, the workpiece 30 located on the front side can be clamped, and the workpiece 30 located on the rear side can be unclamped at the same time. This allows the picking and unloading of the two workpieces to be carried out simultaneously, improving the efficiency of loading and unloading, and thus improving the processing efficiency of the CNC machine tool.

[0036] In this design, a three-jaw chuck or a four-jaw chuck can be installed on the spindle 2. Initially, the rotating block 21 is vertical. When the first electric actuator 26 clamps any workpiece 30, the cylinder 8 moves the workpiece 30 upwards. During this process, the workpiece 30 moves through the limiting groove 37 to the upper side of the protective plate 3, and the conversion rod 18 slides into the guide groove 16. As the workpiece 30 continues to move upwards until the axis of the support rod 45 coincides with the axis of the rotating arc groove 17, the conversion rod 18 slides into the rotating arc groove 17. As the conversion rod 18 continues to move upwards, it slides within the rotating arc groove 17. During this process, the rotating block 21 rotates around the axis of the support rod 45. Simultaneously, the positioning frame 23 and the fixing block 22 rotate around the axis of the support rod 45. When the conversion rod 18 rotates to abut against the end of the rotating arc groove 17 away from the guide groove 16, the fixing block 22 rotates ninety degrees, causing the rotating block 21 to be horizontal. In the flat state, the workpiece 30 is at the same height as the axis of the chuck on the spindle 2. At this time, the third motor 25 is started, which can drive the second threaded rod 24 to rotate. Because the rotating block 21 is threadedly connected to the second threaded rod 24, the rotation of the second threaded rod 24 drives the positioning frame 23 and the fixing block 22 to move back and forth. When the clamped workpiece moves back and forth, the axis of the workpiece 30 coincides with the axis of the chuck on the spindle 2. At this time, the first motor 5 is started, which can drive the workpiece 30 to move closer to the chuck and insert the workpiece 30 into the chuck. At this time, the chuck is started to clamp the workpiece 30. Then, the first electric push rod 26 is started to release the clamping of the current workpiece 30, and the first motor 5 is started to move the fixing block 22 away from the workpiece 30, thereby completing the installation of the workpiece 30 on the chuck and realizing the loading of the CNC machine tool. The loading efficiency is high, no manual loading is required, saving manpower and thus improving the working efficiency of the CNC machine tool.

[0037] Similarly, after the workpiece 30 is processed by the machine body 1, the first electric push rod 26 is activated to clamp the workpiece 30. Then, the chuck is activated to release the clamp on the workpiece 30. Then, the first motor 5 and cylinder 8 are activated to move the workpiece 30 away from the spindle 2 and move the fixed block 22 downward, thereby causing the fixed block 22 to rotate 90 degrees in the opposite direction to return to the initial state. Then, the workpiece 30 is placed into the appropriate first placement slot 29 through the limiting slot 37, thus completing the workpiece unloading operation. The operation is simple, the loading and unloading are automatic, the work efficiency is high, and the manpower is saved, thereby improving the practicality of CNC machine tools.

[0038] like Figures 3 to 5As shown, positioning boxes 20 are fixedly connected to both sides of the support block 19. Both ends of the support rod 45 are inserted into the positioning box 20. A spring 44 is provided inside the positioning box 20. The inner end of the spring 44 is fixedly connected to the support rod 45, and the outer end of the spring 44 is fixedly connected to the inner arm of the positioning box 20. The spring 44 is sleeved on the support rod 45.

[0039] In this design, the spring 44 provides support and positioning for the support rod 45, the rotating block 21, and the fixed block 22. In the initial state, the rotating block 21 is vertical. With the support of the spring 44, the rotating block 21 is prevented from shaking during its up-and-down movement, thus allowing the conversion rod 18 to be smoothly inserted into the guide groove 16.

[0040] like Figure 7 As shown, the protective plate 3 has an installation cavity, in which a second electric push rod 36 is fixedly installed. The telescopic end of the second electric push rod 36 is fixedly connected to one side of the sliding plate 35, and the sliding plate 35 can block the limiting groove 37.

[0041] In this scheme, before processing the workpiece 30, the second electric push rod 36 is activated to push the sliding plate 35 to block the limiting groove 37, so as to prevent the debris generated during the processing of the workpiece 30 from falling into the first placement groove 29 through the limiting groove 37. The protective plate 3 receives the debris during the processing of the workpiece 30, so as to prevent the debris from affecting the meshing between the conveyor chain 12 and the sprocket 11, and also to ensure that the conveyor block 13 is clean and tidy, thereby improving the practicality of the CNC machine tool.

[0042] like Figures 7 to 8 As shown, the cleaning mechanism includes a limiting rod 39 rotatably connected to the protective plate 3. A cleaning brush 38 is fixedly connected to one end of the limiting rod 39 near the fixed block 22. The cleaning brush 38 abuts against the side of the protective plate 3 near the fixed block 22. A swing block 43 is fixedly connected to the end of the limiting rod 39 away from the cleaning brush 38. A third electric push rod 40 is fixedly installed on the side of the protective plate 3 away from the fixed block 22. A limit arm 41 is fixedly connected to the telescopic end of the third electric push rod 40. A linkage rod 42 is rotatably connected to the end of the swing block 43 away from the limiting rod 39. A connecting groove is opened on the side of the linkage rod 42 away from the swing block 43. The limit arm 41 is slidably inserted into the connecting groove.

[0043] When the third electric actuator 40 is activated, it can drive the limiting arm 41 to move left and right. During the left and right movement of the limiting arm 41, it slides in the connecting groove and drives the linkage rod 42 to move left and right. During this process, it drives the swing block 43 and the limiting rod 39 to rotate axially around the limiting rod 39. This, in turn, drives the cleaning brush 38 to rotate axially to clean the upper surface of the sliding plate 35. Because the protective plate 3 is inclined, the debris generated by the workpiece 30 falling on the sliding plate 35 will fall off with the reciprocating cleaning of the cleaning brush 38. This prevents the debris on the sliding plate 35 from falling into the first placement groove 29 when the sliding plate 35 is opened, thus preventing the debris from affecting the insertion of the workpiece 30 into the first placement groove 29 and improving the practicality of the CNC machine tool.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of the invention, all of which fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A CNC machine tool with automatic loading and unloading, comprising a machine body (1), characterized in that: The machine body (1) is provided with a main shaft (2), and a moving mechanism is provided on the machine body (1). The moving mechanism is provided with a movable block (7), and the moving mechanism is used to drive the movable block (7) to move. The machine body (1) is provided with multiple conveying blocks (13), and two first placement slots (29) are opened on the conveying blocks (13). The first placement slots (29) are provided with workpieces (30). The machine body (1) is provided with a material transfer mechanism, which is used to drive the workpieces (30) to move. A cylinder (8) is fixedly installed on the movable block (7). A support block (19) is fixedly connected to the telescopic end of the cylinder (8). A fixed block (22) is provided on the support block (19). A material picking mechanism is provided on the fixed block (22). The material picking mechanism is used to grab the workpieces (30). A protective plate (3) is fixedly connected to the body (1) and is inclined. A limiting groove (37) is opened through the protective plate (3). A sliding groove (34) is opened in the limiting groove (37). A sliding plate (35) is slidably connected in the sliding groove (34). A cleaning mechanism is provided on the protective plate (3). The cleaning mechanism is used to clean the debris that falls off the workpiece (30) on the sliding plate (35) during processing.

2. The CNC machine tool with automatic loading and unloading according to claim 1, characterized in that: The moving mechanism includes a first threaded rod (4) rotatably connected to the body (1), a positioning rod (6) fixedly connected to the body (1), a first motor (5) fixedly installed on one side of the body (1), the output end of the first motor (5) being poweredly connected to one end of the first threaded rod (4), a movable block (7) threadedly installed on the first threaded rod (4), and the movable block (7) slidingly sleeved on the positioning rod (6).

3. The CNC machine tool with automatic loading and unloading according to claim 1, characterized in that: The material transfer mechanism includes two support frames (9) fixedly connected to opposite sides of the machine body (1). A positioning groove (15) is provided through the machine body (1). Support shafts (31) are rotatably connected to both support frames (9). Two sprockets (11) are fixedly connected to the support shafts (31). A conveyor chain (12) is meshed between the two sprockets (11). A conveyor block (13) is fixedly connected between the two conveyor chains (12). A guide plate (32) is fixedly installed on any support frame (9). A second motor (10) is fixedly installed on the support frame (9). The output end of the second motor (10) is poweredly connected to any end of a support shaft (31). A collection frame (33) is fixedly installed on one side of the machine body (1).

4. The CNC machine tool with automatic loading and unloading according to claim 1, characterized in that: The material handling mechanism includes two second placement slots (46) on the side of the fixed block (22) away from the support block (19). Two fixed slots (47) are opened on the side of the fixed block (22) away from the support block (19). The fixed slots (47) are connected to the second placement slots (46). A connecting slider (48) is slidably connected to the fixed block (22). The two ends of the connecting slider (48) pass through the two fixed slots (47) and are fixedly connected to the fixed arc blocks (49). A connecting slot (27) is opened on both sides of the fixed block (22). A connecting block (28) is fixedly connected to the connecting slot (27) on both sides of the connecting slider (48). A first electric push rod (26) is fixedly connected to the fixed block (22). The telescopic end of the first electric push rod (26) is fixedly connected to the connecting block (28).

5. The CNC machine tool with automatic loading and unloading according to claim 4, characterized in that: A rotating block (21) is provided on the support block (19), and a support rod (45) is fixedly connected to the rotating block (21). The end of the support block (19) away from the movable block (7) is hinged to the support rod (45). A positioning frame (23) is fixedly connected to the fixed block (22). A second threaded rod (24) is rotatably connected between the opposite sides of the positioning frame (23). A third motor (25) is fixedly installed on one side of the positioning frame (23). One end of the second threaded rod (24) passes through the positioning frame (23) and is poweredly connected to the rotating end of the third motor (25). The end of the rotating block (21) away from the support block (19) extends into the positioning frame (23) and is threadedly connected to the second threaded rod (24). A rotating mechanism is provided on the rotating block (21). The rotating mechanism can drive the rotating block (21) to rotate axially around the support rod (45).

6. The CNC machine tool with automatic loading and unloading according to claim 1, characterized in that: The rotating mechanism includes a conversion plate (14) fixedly connected to the movable block (7), a guide groove (16) is provided through the conversion plate (14), a rotating arc groove (17) communicating with the guide groove (16) is provided through the conversion plate (14), and a conversion rod (18) that can be inserted into the guide groove (16) is fixedly connected to the rotating block (21).

7. The CNC machine tool with automatic loading and unloading according to claim 5, characterized in that: Positioning boxes (20) are fixedly connected to both sides of the support block (19). Both ends of the support rod (45) are inserted into the positioning box (20). A spring (44) is provided inside the positioning box (20). The inner end of the spring (44) is fixedly connected to the support rod (45), and the outer end of the spring (44) is fixedly connected to the inner arm of the positioning box (20).

8. The CNC machine tool with automatic loading and unloading according to claim 1, characterized in that: The protective plate (3) has an installation cavity, in which a second electric push rod (36) is fixedly installed. The telescopic end of the second electric push rod (36) is fixedly connected to one side of the sliding plate (35).

9. A CNC machine tool with automatic loading and unloading according to claim 1, characterized in that: The cleaning mechanism includes a limiting rod (39) rotatably connected to the protective plate (3). A cleaning brush (38) is fixedly connected to one end of the limiting rod (39) near the fixed block (22). The cleaning brush (38) abuts against the side of the protective plate (3) near the fixed block (22). A swing block (43) is fixedly connected to the end of the limiting rod (39) away from the cleaning brush (38). A third electric push rod (40) is fixedly installed on the side of the protective plate (3) away from the fixed block (22). A limit arm (41) is fixedly connected to the telescopic end of the third electric push rod (40). A linkage rod (42) is rotatably connected to one end of the swing block (43) away from the limiting rod (39). A connecting groove is opened on the side of the linkage rod (42) away from the swing block (43). The limit arm (41) slides into the connecting groove.

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