CNC automatic machining device for upper cover of notebook computer C part

Abstract

The CNC automatic machining device comprises a machine table, a carrying plate and a cover plate, the carrying plate and the cover plate are installed on the upper surface of the machine table, at least one jacking air cylinder is arranged below a supporting plate, piston rods of the jacking air cylinders are connected with the lower surface of the supporting plate, and a guide support is installed on the upper surface of the supporting plate; a first side plate and a second side plate of the guide support are located on the two sides of the rotating plate respectively, the first side plate and the second side plate are each provided with a guide groove allowing the pin shaft to be embedded therein, each guide groove comprises a first guide part extending in the vertical direction and a second guide part extending in an inclined mode, and a strip-shaped hole allowing the pin shaft to penetrate through is formed in the push block. While the cover plate is automatically taken and placed, the position precision of the cover plate in the long-term repeated cover plate taking and placing process can be guaranteed, pushing damage to a workpiece in the cover plate opening and closing process can be avoided, interference of a rotating structure to the workpiece milling machining process can be avoided, and the machining efficiency, convenience and consistency are improved.

Description

TECHNICAL FIELD

[0001] The application relates to a CNC automatic machining device for a notebook computer C-piece upper cover and belongs to the field of 3C product machining. BACKGROUND

[0002] CNC (Computer Numerical Control) is also called a numerical control milling machine, uses a computer to program to control the feed speed and spindle speed of a cutter, and functions such as a tool changer and a coolant, and usually fixes a workpiece to be machined on a machine tool using a corresponding jig. The jig used in the prior art needs to be taken out and put in repeatedly and opened and closed for a long time during the machining process. However, the position accuracy of the cover plate during repeated taking out and putting in cannot be guaranteed, and the workpiece is easily pushed and damaged during the opening and closing process. In addition, the rotating structure of the cover plate cannot be away from the machining area, which easily causes interference with the milling machining of the workpiece, reduces the efficiency, convenience and consistency of machining. SUMMARY

[0003] The application aims to provide a CNC automatic machining device for a notebook computer C-piece upper cover, which can guarantee the position accuracy of the cover plate during long-term and repeated taking out and putting in, avoid damage to the workpiece during the opening and closing of the cover plate, and avoid interference with the milling machining of the workpiece by the rotating structure, thereby improving the efficiency, convenience and consistency of machining.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the application is as follows: a CNC automatic machining device for a notebook computer C-piece upper cover is used for workpiece machining and comprises a machine table, a loading plate and a cover plate installed on the upper surface of the machine table. When in a machining state, the main body of the workpiece is placed between the loading plate and the cover plate, and the lower surface of the workpiece is in contact with the upper surface of the loading plate. A support plate is arranged below the machine table and on the outer side of the long side of the loading plate. A opening and closing cylinder is fixedly installed on the lower surface of the horizontally arranged support plate. A push block is installed on the upper end of the piston rod of the opening and closing cylinder. A support seat is installed on the upper surface of the support plate and on the side of the piston rod of the opening and closing cylinder close to the loading plate. One end of a rotating plate is rotationally connected to the push block through a pin shaft. A clamping assembly is installed on the other end of the rotating plate. A connecting rod is rotationally installed on the upper end of the support seat. One end of the connecting rod is connected to the support seat, and the other end of the connecting rod is connected to the rotating plate. A to-be-clamped part that cooperates with the clamping assembly is arranged on the upper surface of the cover plate. When the piston rod of the opening and closing cylinder is in an elongated state, the rotating plate is in a horizontal state, the connecting rod is in a vertical state, and the clamping assembly is located above the to-be-clamped part on the cover plate. The lower part of the support plate is provided with at least one jacking cylinder, the piston rod of the jacking cylinder is connected with the lower surface of the support plate, so that the support plate can move in the vertical direction, the upper surface of the support plate is provided with a guide support, the first side plate and the second side plate of the guide support are respectively located on both sides of the rotating plate, a guide groove for embedding the pin shaft is formed in the first side plate and the second side plate, the guide groove includes a first guide part extending in the vertical direction and a second guide part extending obliquely, the lower end of the second guide part connected with the upper end of the first guide part extends towards the direction close to the carrier plate, a strip-shaped hole for the pin shaft to pass through is formed in the push block, when the piston rod of the opening and closing cylinder is in the elongated state, the pin shaft is located at the end of the strip-shaped hole away from the carrier plate extending horizontally, when the piston rod of the jacking cylinder is in the elongated state and the piston rod of the opening and closing cylinder is in the contracted state, the pin shaft located at the lower end of the second guide part of the guide groove is located at the end of the strip-shaped hole close to the carrier plate.

[0005] The further improved scheme in the above technical scheme is as follows: 1. In the above scheme, the lower surface of the cover plate is provided with a plurality of pressing blocks arranged in sequence along the four peripheral edges thereof, when in the processing state, the lower surface of the pressing block is in extrusion contact with the four peripheral edges of the main body part of the workpiece, and the edge part of the four peripheral edges of the workpiece is located outside the pressing block.

[0006] 2. In the above scheme, the pressing block is an optimax glue pressing block.

[0007] 3. In the above scheme, the lower surface of the pressing block is provided as an arc surface matched with the upper surface of the main body part of the workpiece.

[0008] 4. In the above scheme, a connecting carrier plate is installed on the end of the rotating plate away from the push block, the clamping assembly is installed on the connecting carrier plate, the connecting carrier plate has a first extension part and a second extension part respectively extending to the two sides of the clamping assembly, the first extension part and the second extension part each have a positioning through hole at the end away from the clamping assembly, the upper surface of the cover plate is provided with a positioning base corresponding to the positioning through hole, and each positioning base is provided with a positioning pin matched with the positioning through hole.

[0009] 5. In the above scheme, at least two positioning columns are arranged on the upper surface of the machine table outside the carrier plate, and at least two positioning holes matched with the positioning columns are formed in the cover plate.

[0010] 6. In the above scheme, two jacking cylinders are arranged below the two ends of the support plate respectively.

[0011] 7. In the above scheme, the support plate and the machine table are connected through at least two groups of guide columns and guide sleeves.

[0012] 8. In the above scheme, the main body of the workpiece is provided with a plurality of first through holes, and the upper surface of the carrier plate is provided with a plurality of positioning pins that cooperate with the first through holes. When in the processing state, the positioning pins are correspondingly inserted into the first through holes.

[0013] 9. In the above scheme, the main body of the workpiece is provided with at least one second through hole, and the upper surface of the carrier plate is provided with a plurality of adsorption holes, which are connected to a vacuum pump or vacuum generator through pipelines.

[0014] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: 1. The present invention provides a CNC automatic machining device for a notebook C-part cover, wherein a clamping assembly is mounted on the other end of a rotating plate, a connecting rod is rotatably mounted on the upper end of a support base, one end of the connecting rod is connected to the support base, and the other end of the connecting rod is connected to the rotating plate. A clamping component is provided on the upper surface of the cover plate, which cooperates with the clamping assembly. When the piston rod of the opening and closing cylinder is in the extended state, the rotating plate is in a horizontal state and the connecting rod is in a vertical state. The clamping assembly is located above the clamping component on the cover plate. At least one lifting cylinder is provided below the support plate, and the piston rod of the lifting cylinder is connected to the lower surface of the support plate, so that the support plate can move in the vertical direction. A guide support is mounted on the upper surface of the support plate. The first side plate and the second side plate of the guide support are located on both sides of the rotating plate. A guide groove for inserting a pin shaft is provided on both the first side plate and the second side plate. The guide groove includes a first guide portion extending in the vertical direction and an inclined extension portion. The second guide section, whose upper end is connected to the lower end of the first guide section, extends towards the carrier plate. A strip-shaped hole for a pin to pass through is provided on the push block. When the piston rod of the opening / closing cylinder is in the extended state, the pin is located at the end of the horizontally extending strip-shaped hole away from the carrier plate. When the piston rod of the lifting cylinder is in the extended state and the piston rod of the opening / closing cylinder is in the retracted state, the pin at the lower end of the second guide section, which moves to the guide groove, is located at the end of the strip-shaped hole near the carrier plate. This achieves automatic loading and unloading of the cover plate, ensuring the positional accuracy of the cover plate during repeated loading and unloading, thus guaranteeing the stability of workpiece holding. It also avoids damage to the workpiece caused by pushing during the opening and closing of the cover plate, and prevents the rotating structure from interfering with the entire machining process, especially the milling process of the workpiece. This facilitates continuous machining of all four sides of the workpiece, improving machining efficiency, convenience, and consistency.

[0015] 2. In the CNC automatic machining device for the top cover of a notebook computer C-piece of the present invention, a plurality of pressure blocks are installed on the lower surface of the cover plate, arranged sequentially along its four edges. When in the machining state, the lower surface of the pressure blocks is in contact with the periphery of the workpiece body, and the edges of the workpiece are located outside the pressure blocks. This can improve the stability of the workpiece, especially the machining area near the periphery, and avoid the occurrence of vibration during milling that affects the quality of the machined surface, thereby improving the machining quality. In addition, a connecting plate is installed on the end of the rotating plate away from the push block, and the clamping assembly is installed on the connecting plate. The cover plate has a first extension and a second extension extending to both sides of the clamping assembly. Each of the first extension and the second extension has a positioning through hole at the end away from the clamping assembly. The upper surface of the cover plate is equipped with a positioning base corresponding to the positioning through hole. Each positioning base is provided with a positioning pin that cooperates with the positioning through hole. The relative position between the connecting plate on which the clamping assembly is installed and the cover plate on which the part to be clamped is installed can be calibrated multiple times during long-term use, so as to ensure the positional accuracy between the clamping assembly and the part to be clamped during long-term use, thereby improving the accuracy of picking up and placing the cover plate. Attached Figure Description

[0016] Appendix Figure 1 This is a schematic diagram of the structure of a first embodiment of the CNC automatic machining device of the present invention; Appendix Figure 2 Appendix to this invention Figure 1 Enlarged view of point A in the middle; Appendix Figure 3 Appendix to this invention Figure 1 Enlarged view of point B in the middle; Appendix Figure 4 This is a partial structural breakdown diagram of the CNC automatic machining device of the present invention; Appendix Figure 5 Appendix to this invention Figure 4 Enlarged view of point C in the middle; Appendix Figure 6 This is a schematic diagram of the CNC automatic machining device of the present invention; Appendix Figure 7 Appendix to this invention Figure 6 A schematic cross-sectional view of the middle DD; Appendix Figure 8 This is a schematic diagram of the workpiece structure in the CNC automatic machining device of the present invention; Appendix Figure 9 This is a schematic diagram of the structure of Embodiment 2 of the CNC automatic machining device of the present invention; Appendix Figure 10 Appendix to this invention Figure 9 Enlarged view of point E in the middle; Appendix Figure 11This is a schematic diagram of the CNC automatic machining device of the present invention.

[0017] In the above figures: 100, workpiece; 101, main body; 102, first through hole; 103, second through hole; 104, edge; 200, machine base; 201, cavity; 300, carrier plate; 301, adsorption hole; 400, cover plate; 401, workpiece to be clamped; 500, elastic support plate; 501, gas tank; 600, pressure block; 700, clamping assembly; 1, support plate; 2, lifting cylinder; 3, opening and closing cylinder; 4, piston rod; 5, push block; 6, support base; 7, rotation... 8. Moving plate; 9. Pin; 10. Connecting rod; 11. Guide support; 12. First side plate; 13. Second side plate; 14. Guide groove; 15. First guide part; 16. Second guide part; 17. Strip hole; 18. Positioning post; 19. Positioning hole; 10. Guide post; 10. Guide sleeve; 11. Connecting carrier plate; 11. First extension part; 12. Second extension part; 13. Positioning through hole; 14. Positioning base; 15. First positioning pin; 16. Second positioning pin. Detailed Implementation

[0018] The present patent can be further understood through the specific embodiments given below, but they are not intended to limit the present patent.

[0019] Example 1: A CNC automatic machining device for machining workpiece 100 includes: a machine base 200, a carrier plate 300 and a cover plate 400 mounted on the upper surface of the machine base 200. When in machining mode, the main body 101 of the workpiece 100 is placed between the carrier plate 300 and the cover plate 400, and the lower surface of the workpiece 100 is in contact with the upper surface of the carrier plate 300. A support plate 1 is provided below the machine base 200 and on the outer side of the long side of the carrier plate 300. An opening and closing cylinder 3 is fixedly mounted on the lower surface of the horizontally arranged support plate 1. A push block 5 is mounted on the upper end of the piston rod 4 of the opening and closing cylinder 3. The upper surface of the support plate 1 and the piston rod 4 of the opening and closing cylinder 3 are connected to the piston rod 4 of the opening and closing cylinder 3. A support base 6 is installed on the side of the piston rod 4 near the carrier plate 300. One end of a rotating plate 7 is rotatably connected to the push block 5 via a pin 8. A clamping assembly 700 is installed on the other end of the rotating plate 7. A connecting rod 9 is rotatably installed on the upper end of the support base 6. One end of the connecting rod 9 is connected to the support base 6, and the other end is connected to the rotating plate 7. A clamping part 401 that cooperates with the clamping assembly 700 is provided on the upper surface of the cover plate 400. When the piston rod 4 of the opening and closing cylinder 3 is in the extended state, the rotating plate 7 is in the horizontal state and the connecting rod 9 is in the vertical state. The clamping assembly 700 is located above the clamping part 401 on the cover plate 400. At least one lifting cylinder 2 is provided below the support plate 1. The piston rod of the lifting cylinder 2 is connected to the lower surface of the support plate 1, allowing the support plate 1 to move vertically. A guide support 10 is installed on the upper surface of the support plate 1. The first side plate 11 and the second side plate 12 of the guide support 10 are located on both sides of the rotating plate 7. A guide groove 13 for the pin 8 to be inserted is provided on both the first side plate 11 and the second side plate 12. The guide groove 13 includes a first guide portion 131 extending vertically and a second guide portion 132 extending obliquely. The lower end of the second guide portion 132, which is connected to the lower end of the first guide portion 131, extends toward the carrier plate 300. The push block 5 has a strip hole 14 for the pin 8 to pass through. When the piston rod 4 of the opening and closing cylinder 3 is in the extended state, the pin 8 is located at the end of the horizontally extending strip hole 14 away from the carrier plate 300. When the piston rod of the lifting cylinder 2 is in the extended state and the piston rod 4 of the opening and closing cylinder 3 is in the retracted state, the pin 8, which moves to the lower end of the second guide portion 132 of the guide groove 13, is located at the end of the strip hole 14 near the carrier plate 300. The push block is driven to move down to the low position by the opening and closing cylinder. During this process, the pin first moves vertically downward along the first guide part of the guide groove. The rotating plate, which is rotatably connected to the push block through the pin, rotates from the horizontal position to the vertical (90°) position. At the same time, the clamped cover plate is also driven to rotate from the horizontal position to the vertical position. Under the action of the downward pulling force of the push block, the pin continues to move down into the second guide part of the guide groove. It moves along the inclined second guide part to the lower end of the second guide part. During this process, the pin also moves from one end close to the carrier plate to the other end in the strip hole on the push block. The rotating plate also continues to rotate outward with the movement of the pin, and the cover plate also continues to rotate outward to the 110° position.

[0020] A plurality of pressure blocks 600 are installed on the lower surface of the cover plate 400, arranged sequentially along its perimeter. When in the processing state, the lower surface of the pressure block 600 is pressed and contacted with the perimeter of the main body 101 of the workpiece 100, and the perimeter edge 104 of the workpiece 100 is located outside the pressure block 600. The workpiece to be processed is installed between the carrier plate and the cover plate, so that the lower surface of the main body of the workpiece contacts the upper surface of the carrier plate, the upper surface contacts the lower surface of the elastic support plate, and the lower surface of the pressure block installed around the lower surface of the cover plate contacts the upper surface of the main body of the workpiece.

[0021] The aforementioned 600 is an urethane briquette.

[0022] The lower surface of the aforementioned pressure block 600 is configured as an arc-shaped surface that matches the upper surface of the main body 101 of the workpiece 100.

[0023] At least two positioning posts 151 are provided on the upper surface of the machine base 200 and on the outer side of the carrier plate 300, and at least two positioning holes 152 that cooperate with the positioning posts 151 are provided on the cover plate 400.

[0024] The two lifting cylinders 2 mentioned above are respectively located below both ends of the support plate 1.

[0025] The aforementioned support plate 1 is connected to the machine base 200 by at least two sets of guide posts 161 and guide sleeves 162.

[0026] The main body 101 of the workpiece 100 is provided with a plurality of first through holes 102, and the upper surface of the carrier plate 300 is provided with a plurality of positioning pins 19 that cooperate with the first through holes 102. When in the processing state, the positioning pins 19 are inserted into the first through holes 102 respectively.

[0027] The main body 101 of the workpiece 100 is provided with at least one second through hole 103, and the upper surface of the carrier plate 300 is provided with a plurality of adsorption holes 301. The adsorption holes 301 are connected to a vacuum pump through a pipeline. The first through hole and the second through hole are process through holes that are inherent in the structure of the workpiece itself. The workpiece is specifically part A or part D of a laptop computer.

[0028] A cavity 201 is formed between the machine tool 200 and the carrier plate 300. The cavity 201 is connected to a vacuum pump installed on the machine tool 200 through a pipe. The adsorption hole 301 is connected to the cavity 201 through a pipe opened on the carrier plate 300.

[0029] An elastic support plate 500 is installed on the lower surface of the cover plate 400, which can contact and adhere to the upper surface of the workpiece 100. Several gas grooves 501 are formed on the lower surface of the elastic support plate 500.

[0030] The aforementioned pressure blocks 600 are arranged around the elastic support plate 500.

[0031] Example 2: A CNC automatic machining device for machining workpiece 100 includes: a machine base 200, a carrier plate 300 and a cover plate 400 mounted on the upper surface of the machine base 200. When in machining mode, the main body 101 of the workpiece 100 is placed between the carrier plate 300 and the cover plate 400, and the lower surface of the workpiece 100 is in contact with the upper surface of the carrier plate 300. A support plate 1 is provided below the machine base 200 and on the outer side of the long side of the carrier plate 300. An opening and closing cylinder 3 is fixedly mounted on the lower surface of the horizontally arranged support plate 1. A push block 5 is mounted on the upper end of the piston rod 4 of the opening and closing cylinder 3. The upper surface of the support plate 1 and the piston rod 4 of the opening and closing cylinder 3 are connected to the piston rod 4 of the opening and closing cylinder 3. A support base 6 is installed on the side of the piston rod 4 near the carrier plate 300. One end of a rotating plate 7 is rotatably connected to the push block 5 via a pin 8. A clamping assembly 700 is installed on the other end of the rotating plate 7. A connecting rod 9 is rotatably installed on the upper end of the support base 6. One end of the connecting rod 9 is connected to the support base 6, and the other end is connected to the rotating plate 7. A clamping part 401 that cooperates with the clamping assembly 700 is provided on the upper surface of the cover plate 400. When the piston rod 4 of the opening and closing cylinder 3 is in the extended state, the rotating plate 7 is in the horizontal state and the connecting rod 9 is in the vertical state. The clamping assembly 700 is located above the clamping part 401 on the cover plate 400. The workpiece to be processed is installed between the carrier plate and the cover plate, so that the lower surface of the main body of the workpiece contacts the upper surface of the carrier plate and the upper surface contacts the lower surface of the elastic support plate. Since the cover plate is generally made of metal and has a large weight, the surface contact between the main body of the workpiece and the carrier plate can be initially maintained under the pressure of the cover plate itself. At least one lifting cylinder 2 is provided below the support plate 1. The piston rod of the lifting cylinder 2 is connected to the lower surface of the support plate 1, allowing the support plate 1 to move vertically. A guide support 10 is installed on the upper surface of the support plate 1. The first side plate 11 and the second side plate 12 of the guide support 10 are located on both sides of the rotating plate 7. A guide groove 13 for the pin 8 to be inserted is provided on both the first side plate 11 and the second side plate 12. The guide groove 13 includes a first guide portion 131 extending vertically and a second guide portion 132 extending obliquely. The lower end of the second guide portion 132, which is connected to the lower end of the first guide portion 131, extends toward the carrier plate 300. The push block 5 has a strip hole 14 for the pin 8 to pass through. When the piston rod 4 of the opening and closing cylinder 3 is in the extended state, the pin 8 is located at the end of the horizontally extending strip hole 14 away from the carrier plate 300. When the piston rod of the lifting cylinder 2 is in the extended state and the piston rod 4 of the opening and closing cylinder 3 is in the retracted state, the pin 8, which moves to the lower end of the second guide portion 132 of the guide groove 13, is located at the end of the strip hole 14 near the carrier plate 300. The support plate is driven to move up to a high position by the lifting cylinder, and then the push block is driven to move up to a high position by the opening and closing cylinder, so that the rotating plate that rotates with the push block moves up rotates to a horizontal position. The clamping assembly installed on the rotating plate then rotates to the top of the cover plate above the part to be clamped. At this time, the connecting rod rotates to a vertical position, and the pin moves to the upper end of the first guide part of the guide groove and the end of the push block with the strip hole away from the carrier plate.

[0032] A connecting plate 17 is installed on the end of the rotating plate 7 away from the push block 5. The clamping assembly 700 is installed on the connecting plate 17. The connecting plate 17 has a first extension 171 and a second extension 172 extending to both sides of the clamping assembly 700. Each of the first extension 171 and the second extension 172 has a positioning through hole 181 at the end away from the clamping assembly 700. The upper surface of the cover plate 400 is respectively equipped with a positioning base 182 corresponding to the positioning through hole 181. Each positioning base 182 is provided with a first positioning pin 183 that cooperates with the positioning through hole 181. The support plate is driven to move down by the lifting cylinder, and the opening and closing cylinder, rotating plate and clamping assembly also move down accordingly. The positioning pin on the positioning base on the upper surface of the cover plate passes through the positioning through hole on the connecting carrier plate to ensure the positional accuracy between the connecting carrier plate with the clamping assembly and the cover plate with the part to be clamped.

[0033] The aforementioned support plate 1 is connected to the machine base 200 by at least two sets of guide posts 161 and guide sleeves 162.

[0034] Two guide sleeves 162 are respectively installed at both ends of the support plate 1. One end of each of the two vertically arranged guide posts 161 is connected to the machine base 200, and the other end is correspondingly embedded in the guide sleeve 162 and slides in cooperation with the guide sleeve 162.

[0035] The main body 101 of the workpiece 100 is provided with at least one second through hole 103, and the upper surface of the carrier plate 300 is provided with a plurality of adsorption holes 301, which are connected to a vacuum generator through a pipeline.

[0036] A cavity 201 is formed between the machine tool 200 and the carrier plate 300. The cavity 201 is connected to a vacuum generator installed on the machine tool 200 through a pipe. The adsorption hole 301 is connected to the cavity 201 through a pipe opened on the carrier plate 300.

[0037] The working principle of this invention is as follows: When in the processing state: the workpiece to be processed is installed between the carrier plate and the cover plate, so that the lower surface of the main body of the workpiece contacts the upper surface of the carrier plate, the upper surface contacts the lower surface of the elastic support plate, and the lower surface of the pressure block installed around the lower surface of the cover plate contacts the upper surface of the main body of the workpiece. Since the cover plate is generally made of metal and has a large weight, the pressure of the cover plate itself can initially maintain the surface contact between the main body of the workpiece and the elastic support plate, pressure block and carrier plate above and below. Then, by starting the vacuum pump or vacuum generator, gas flow channels from the gas groove on the lower surface of the elastic support plate, the second through hole on the main body of the workpiece, and the adsorption hole on the upper surface of the carrier plate to the vacuum pump or vacuum generator are generated, thereby generating an adsorption force on the elastic support plate above the workpiece, which in turn enhances the downward force of the cover plate fixedly connected to the elastic support plate and the pressure block installed on the cover plate, thereby achieving stable pressing of the main body of the workpiece, especially its four edges. Next, the edges of the workpiece are milled in the circumference using CNC tools. During the machining process, the pressure applied by the pressure block is close to the machining area, which can effectively avoid the occurrence of vibration and ensure the quality and yield of the machined surface. After processing is completed: First, the support plate is driven to move up to a high position by the lifting cylinder, and then the push block is driven to move up to a high position by the opening and closing cylinder, so that the rotating plate that rotates with the push block moves up rotates to a horizontal position. The clamping assembly installed on the rotating plate then rotates to the top of the cover plate above the workpiece to be clamped. At this time, the connecting rod rotates to a vertical position, and the pin moves to the upper end of the first guide part of the guide groove and the end of the push block with the strip hole away from the carrier plate. Next, the support plate is driven to move down by the lifting cylinder, and the opening and closing cylinder, rotating plate, and clamping assembly also move down. The positioning pin on the positioning base on the upper surface of the cover plate passes through the positioning through hole on the connecting plate to ensure the positional accuracy between the connecting plate with the clamping assembly and the cover plate with the clamping part. Subsequently, the clamping assembly and the clamping part are clamped together to achieve stable clamping of the entire cover plate. The clamping assembly and the clamping part are not the inventive points of this patent. They can be obtained by purchasing them or by adopting the solution in the applicant's earlier application (application number 2024102325213). They will not be described in detail here. Turn off the vacuum pump or vacuum generator, and drive the support plate to move up to a high position again through the lifting cylinder. The opening and closing cylinder, rotating plate, clamping assembly and the cover plate clamped by the clamping assembly all move up, so that the positioning hole on the cover plate is disengaged from the positioning column on the machine. At the same time, the elastic support plate and pressure block installed on the cover plate are also perpendicular to the surface of the processed workpiece and away from it without damaging the workpiece. Next, the push block is driven to move down to the low position by the opening and closing cylinder. During this process, the pin first moves vertically downward along the first guide part of the guide groove. The rotating plate, which is rotatably connected to the push block through the pin, rotates from the horizontal position to the vertical (90°) position. At the same time, the clamped cover plate is also driven to rotate from the horizontal position to the vertical position. Under the action of the downward pulling force of the push block, the pin continues to move down into the second guide part of the guide groove. It moves along the inclined second guide part to the lower end of the second guide part. During this process, the pin also moves from one end close to the carrier plate to the other end in the strip hole on the push block. The rotating plate also continues to rotate outward with the movement of the pin, and the cover plate also continues to rotate outward to the 110° position. Then, the processed workpieces are removed from the carrier plate by manual or automated equipment, and new workpieces to be processed are placed on the carrier plate. The piston rod of the lifting cylinder is placed in the extended state, and at the same time the opening and closing cylinder drives the push block to move up to the high position, so that the rotating plate that rotates with the push block and the cover plate held by the clamping assembly on the rotating plate rotate from the 110° position to the 90° position and then rotate to the horizontal position. The support plate is driven to move down by the lifting cylinder. The opening and closing cylinder, the rotating plate, the clamping assembly, and the cover plate clamped by the clamping assembly on the rotating plate all move down until the elastic support plate and pressure block on the lower surface of the cover plate contact the upper surface of the main body of the workpiece to be processed, and the positioning pin on the machine tool passes through the positioning hole on the cover plate to ensure the positional accuracy of the cover plate. Afterwards, the clamping assembly releases the workpiece to be clamped, and the support plate is driven to move up to a high position again by the lifting cylinder. The opening and closing cylinder, the rotating plate, and the clamping assembly all move up and disengage from the cover plate. Then, the push block is driven to move down to a low position by the opening and closing cylinder. During this process, the rotating plate rotates from the horizontal position to open to a 110° position, thereby moving away from the workpiece to be processed. This makes it easier for the CNC tool to perform one-time processing on all four sides of the workpiece, improving the efficiency and convenience of processing.

[0038] When using the aforementioned CNC automatic machining device, it can automatically pick up and place the cover plate, ensuring the positional accuracy of the cover plate during repeated pick-up and drop operations, thus guaranteeing the stability of workpiece clamping. It also avoids damage to the workpiece caused by pushing during cover plate opening and closing, and prevents interference from rotating structures on the entire machining process, especially the milling process. This facilitates continuous machining of all four sides of the workpiece, improving machining efficiency, convenience, and consistency. Furthermore, it enhances the stability of workpiece clamping, especially in the machining areas near the edges, preventing vibrations during milling that could affect the quality of the machined surface, thus improving machining quality. Additionally, it can repeatedly calibrate the relative position between the connecting carrier plate with the clamping components and the cover plate with the workpiece to be clamped during long-term use, ensuring the positional accuracy between the clamping components and the workpiece, thereby improving the accuracy of cover plate pick-up and drop.

[0039] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A CNC automatic machining device for machining a notebook computer C-part cover, for machining workpiece (100), comprising: The machine tool (200), a carrier plate (300) mounted on the upper surface of the machine tool (200), and a cover plate (400) are provided. When in the processing state, the main body (101) of the workpiece (100) is placed between the carrier plate (300) and the cover plate (400), and the lower surface of the workpiece (100) is in contact with the upper surface of the carrier plate (300). The machine tool (200) is characterized by having a support plate (1) located below the machine tool (200) and outside the long side of the carrier plate (300). A cylinder (3) is fixedly mounted on the lower surface of the horizontally mounted support plate (1). A push block (5) is mounted on the upper end of the piston rod (4) of the cylinder (3). The upper surface of the support plate (1) is located near the piston rod (4) of the cylinder (3) close to the carrier plate (300). A support base (6) is installed on one side. One end of a rotating plate (7) is rotatably connected to the push block (5) via a pin (8). A clamping assembly (700) is installed on the other end of the rotating plate (7). A connecting rod (9) is rotatably installed on the upper end of the support base (6). The other end of the connecting rod (9) is connected to the rotating plate (7) at one end. A clamping part (401) that cooperates with the clamping assembly (700) is provided on the upper surface of the cover plate (400). When the piston rod (4) of the opening and closing cylinder (3) is in the extended state, the rotating plate (7) is in the horizontal state and the connecting rod (9) is in the vertical state. The clamping assembly (700) is located above the clamping part (401) on the cover plate (400). At least one lifting cylinder (2) is provided below the support plate (1). The piston rod of the lifting cylinder (2) is connected to the lower surface of the support plate (1), so that the support plate (1) can move in the vertical direction. A guide support (10) is installed on the upper surface of the support plate (1). The first side plate (11) and the second side plate (12) of the guide support (10) are located on both sides of the rotating plate (7). A guide groove (13) for the pin (8) to be inserted is provided on the first side plate (11) and the second side plate (12). The guide groove (13) includes a first guide part (131) extending in the vertical direction and a second guide part (132) extending at an incline. The upper end is connected to the... The lower end of the second guide (132) connected to the lower end of the first guide (131) extends toward the carrier plate (300). The push block (5) has a strip hole (14) through which the pin (8) passes. When the piston rod (4) of the opening and closing cylinder (3) is in the extended state, the pin (8) is located at the end of the horizontally extending strip hole (14) away from the carrier plate (300). When the piston rod of the lifting cylinder (2) is in the extended state and the piston rod (4) of the opening and closing cylinder (3) is in the retracted state, the pin (8) that moves to the lower end of the second guide (132) of the guide groove (13) is located at the end of the strip hole (14) near the carrier plate (300).

2. The CNC automatic machining device for the top cover of a notebook computer C-part according to claim 1, characterized in that: The lower surface of the cover plate (400) is provided with a plurality of pressure blocks (600) arranged sequentially along its four edges. When in the processing state, the lower surface of the pressure block (600) is pressed against the periphery of the main body (101) of the workpiece (100), and the edge portion (104) of the workpiece (100) is located outside the pressure block (600).

3. The CNC automatic machining device for the top cover of a notebook computer C-part according to claim 2, characterized in that: The pressing block (600) is an urethane pressing block.

4. The CNC automatic machining device for the top cover of a notebook computer C-part according to claim 2, characterized in that: The lower surface of the pressure block (600) is configured as an arc-shaped surface that matches the upper surface of the main body (101) of the workpiece (100).

5. The CNC automatic machining device for the top cover of a notebook computer C-part according to claim 1, characterized in that: A connecting plate (17) is installed on the end of the rotating plate (7) away from the push block (5). The clamping assembly (700) is installed on the connecting plate (17). The connecting plate (17) has a first extension (171) and a second extension (172) extending to both sides of the clamping assembly (700). Each of the first extension (171) and the second extension (172) has a positioning through hole (181) at the end away from the clamping assembly (700). The upper surface of the cover plate (400) is respectively equipped with a positioning base (182) corresponding to the positioning through hole (181). Each positioning base (182) is provided with a positioning pin (183) that cooperates with the positioning through hole (181).

6. The CNC automatic machining device for the top cover of a notebook computer C-part according to claim 1, characterized in that: At least two positioning posts (151) are provided on the upper surface of the machine base (200) and on the outside of the carrier plate (300), and at least two positioning holes (152) are provided on the cover plate (400) to cooperate with the positioning posts (151).

7. The CNC automatic machining device for the top cover of a notebook computer C-part according to claim 1, characterized in that: The two lifting cylinders (2) are respectively located below both ends of the support plate (1).

8. The CNC automatic machining device for the top cover of a notebook computer C-part according to claim 1, characterized in that: The support plate (1) is connected to the machine base (200) by at least two sets of guide posts (161) and guide sleeves (162).

9. The CNC automatic machining device for the top cover of a notebook computer C-part according to claim 1, characterized in that: The main body (101) of the workpiece (100) is provided with a plurality of first through holes (102), and the upper surface of the carrier plate (300) is provided with a plurality of positioning pins (19) that cooperate with the first through holes (102). When in the processing state, the positioning pins (19) are inserted into the first through holes (102).

10. The CNC automatic machining device for the top cover of a notebook computer C-part according to claim 1, characterized in that: The main body (101) of the workpiece (100) is provided with at least one second through hole (103), and the upper surface of the carrier plate (300) is provided with a plurality of adsorption holes (301), which are connected to a vacuum pump or vacuum generator through a pipeline.

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