CNC automatic feeding and discharging device

Abstract

The invention relates to the technical field of CNC, in particular to a CNC automatic feeding and discharging device which is suitable for a numerical control machine tool, the numerical control machine tool is composed of a transferring part, a feeding part and a machining part, the transferring part is used for transferring workpieces, the feeding part is used for conveying the workpieces to the machining part, the machining part is used for machining the workpieces, and the machining part is used for machining the workpieces. The feeding part comprises a material disc, the material disc is rotationally arranged on the inner side of the numerical control machine tool, a workpiece to be machined is placed above the material disc, the feeding part further comprises a carrying hand rotationally arranged above the numerical control machine tool, and the carrying hand is used for carrying the workpieces in different shapes to the machining part. The finished workpieces are carried to the position above the material disc through the carrying hand, then discharging is conveniently conducted through the material disc, in this way, under the action of the carrying hand and the material disc, automatic feeding and discharging can be conveniently conducted on the workpieces and the finished workpieces, under the action of the carrying hand, the workpieces of different shapes can be clamped and transferred, and operation is convenient.

Description

Technical Field

[0001] This application relates to the field of CNC technology, and specifically to a CNC automatic loading and unloading device. Background Art

[0002] A CNC automatic loading and unloading device is an automated equipment for numerically controlled machine tools, aiming to achieve automatic loading and unloading of workpieces, thereby improving production efficiency, reducing labor costs, and enhancing machining accuracy.

[0003] The prior art also proposed a solution for CNC automatic loading and unloading. For example, a Chinese patent application with the publication number CN220388766U discloses a CNC automatic loading and unloading device, including a first numerically controlled machine tool, a second numerically controlled machine tool, and a fence. A control cabinet is fixedly arranged on the inner surface of one side of the fence. It further includes: a loading and unloading mechanism, which is adapted to both the first numerically controlled machine tool and the second numerically controlled machine tool; a robot mechanism, which is adapted to the loading and unloading mechanism. The robot takes out the processed products and places the products to be processed, and repeats the loading and unloading actions in sequence to automatically complete the material taking and placing, thereby saving more labor costs. Although the above technical solution automatically completes the process of material taking and placing, there are still other problems in specific use. For example, when the CNC processes workpieces, due to the large variety of workpieces, it is often necessary to replace different clamping mechanisms to clamp and load different workpieces, and the operation is relatively inconvenient.

[0004] Therefore, it is necessary to provide a CNC automatic loading and unloading device to solve the above problems.

[0005] It should be noted that the above information disclosed in this background art section is only used to understand the background art of the concept of this application, and therefore, it may include information that does not constitute the prior art. Summary of the Invention

[0006] The technical solution adopted by this application to solve its technical problems is: a CNC automatic loading and unloading device, which is applicable to numerically controlled machine tools. The numerically controlled machine tool is composed of a transfer part, a feeding part, and a processing part. The transfer part is used to transfer workpieces, the feeding part is used to send workpieces to the processing part, and the processing part is used to process workpieces. The feeding part includes a tray, the tray is rotatably arranged inside the numerically controlled machine tool, and workpieces to be processed are placed above the tray. The feeding part further includes a manipulator rotatably arranged above the numerically controlled machine tool, and the manipulator is used to transfer workpieces of different shapes to the processing part.

[0007] Furthermore, a transfer disk is rotatably arranged inside the CNC machine tool. The transfer disk is rotatably arranged inside the CNC machine tool through an external motor. The handling arm is fixedly installed above the transfer disk. Multiple groups of special-shaped fastening rings are arranged at the end of the handling arm away from the transfer disk. The multiple groups of special-shaped fastening rings are used to automatically fix workpieces of different shapes.

[0008] Furthermore, an electric telescopic rod I is installed at the end of the handling arm away from the transfer disk. The telescopic end of the electric telescopic rod I is fixedly installed with a connecting support rod. Multiple groups of special-shaped fastening rings are rotatably arranged on the outer peripheral surface of the connecting support rod. A fastening unit is arranged outside the connecting support rod. The fastening unit is used to control the rotation of multiple groups of special-shaped fastening rings and fix the workpiece. A contact is installed on the lower end surface of the connecting support rod; during operation, when the special-shaped fastening rings have not yet clamped the workpiece, first control the transfer disk to drive the handling arm to rotate above the material tray and correspond to the workpiece above the material tray. Then control the telescopic end of the electric telescopic rod I to move downward, so that the telescopic end of the electric telescopic rod I drives the connecting support rod and the special-shaped fastening rings to move downward, so that the special-shaped fastening rings wrap around the outside of the workpiece. When the contact at the bottom of the connecting support rod touches the upper end surface, it means that the special-shaped fastening rings have completely wrapped the workpiece at this time. Therefore, the external circuit is connected, and the external controller will first control the electric telescopic rod I to stop moving and control the fastening unit to drive the special-shaped fastening rings to rotate, so that the workpiece can be automatically fixed; When the workpiece is clamped, the external controller controls the telescopic end of the electric telescopic rod I to move upward again, so that it drives the connecting support rod, the fastening unit, multiple groups of special-shaped fastening rings and the workpiece to move upward synchronously. Then control the transfer disk to rotate towards the processing part side to perform feeding and processing. The operation is relatively convenient and the automation is relatively strong.

[0009] Furthermore, the fastening unit includes a pressure frame slidably arranged outside the connecting support rod. A pressure ring is fixedly installed at the bottom end of the pressure frame. The lower end surface of the pressure ring contacts the side wall of the special-shaped fastening ring. The shape of the bottom of the pressure ring is arc-shaped. The side wall of the special-shaped fastening ring close to the workpiece is provided with friction lines, and the material at the contact position between the special-shaped fastening ring and the workpiece is rubber. The side wall of the telescopic end of the electric telescopic rod is installed with an electric telescopic rod II through a bracket. The electric telescopic rod II is arranged above the pressure frame. The telescopic end of the electric telescopic rod II contacts the upper end surface of the pressure frame.

[0010] Furthermore, the special-shaped fastening ring is rotatably arranged outside the connecting support rod through a side bracket. A torsion spring I is arranged at the rotation connection between the special-shaped fastening ring and the side bracket.

[0011] Furthermore, a limit frame is installed above the CNC machine tool. A limit ring plate is installed at the end of the limit frame away from the CNC machine tool. The limit ring plate is located above the material tray.

[0012] Furthermore, a first limiting block is installed below the placement plate. A second limiting block is rotatably arranged above the CNC machine tool at a position corresponding to the first limiting block. The second limiting block is designed along the rotation direction of the material tray. During the process of the material tray driving the placement plate to rotate, the first limiting block will contact the second limiting block. A second torsion spring is arranged at the rotation position of the second limiting block and the CNC machine tool. The contact position between the first limiting block and the second limiting block is circular arc-shaped. A recycling box is arranged below the material tray.

[0013] Furthermore, two groups of elastic telescopic rods are fixedly connected to the groove wall of the rectangular groove. The two groups of elastic telescopic rods are connected to the side wall of the placement plate on the side away from the groove wall of the rectangular groove. A spring is sleeved on the outer peripheral surface of the elastic telescopic rod. During operation, when the first limiting block contacts the second limiting block and the second limiting block gives a certain pressure to the first limiting block, that is, when the placement plate moves, the placement plate will simultaneously squeeze the elastic telescopic rods on its side wall. After the workpiece after processing is discharged, that is, when the first limiting block and the second limiting block are separated, under the elastic force of the second torsion spring, the second limiting block will return to its initial position. Under the elastic force of the elastic telescopic rod, the placement plate will return to its initial position, which is convenient for subsequent discharging of the remaining processed workpieces step by step.

[0014] Furthermore, a limiting groove adapted to the pressure frame is formed on the outer peripheral surface of the connecting support rod. During operation, the arrangement of the limiting groove facilitates the movement of the pressure frame along the axis direction of the connecting support rod, which is beneficial to the clamping and loading of the workpiece.

[0015] The beneficial effect of this application is as follows: A CNC automatic loading and unloading device provided by this application, under the pressure of the pressure ring on the special-shaped fastening ring 7, the special-shaped fastening ring 7 will deform adaptively according to the shape of the workpiece and tightly adhere to the surface of the workpiece. With such a design, since workpieces with different diameters and different shapes are clamped, the practicability of this CNC machine tool is improved, the operation is relatively convenient, and there is no need to replace other clamping components.

[0016] By driving the placement plate to move away from the bottom of the material groove through the first limiting block, that is, the bottom of the material groove is gradually opened. Since the second limiting block is rotatably arranged above the CNC machine tool, under the continuous force of the second limiting block, the second limiting block will rotate at a certain angle. When the placement plate completely moves away from the bottom of the material groove, at this time, the second limiting block also rotates to the maximum angle. Therefore, the processed workpiece will fall from the unobstructed material groove into the recycling box below, realizing the function of automatically discharging the processed workpiece, and the operation is relatively convenient.

[0017] In addition to the purposes, features and advantages described above, this application has other purposes, features and advantages. The following will refer to the drawings for a further detailed description of this application. Description of the Drawings

[0018] The accompanying drawings forming a part of this application are used to provide a further understanding of this application. The schematic embodiments and descriptions thereof of this application are used to explain this application and do not constitute an improper limitation to this application. In the drawings: Figure 1 is the overall schematic diagram in this application; Figure 2 is the partial structural schematic diagram of the feeding part in this application; Figure 3 is the partial structural schematic diagram of the special-shaped fastening ring in this application; Figure 4 is the partial structural schematic diagram of the handling arm in this application; Figure 5 is the partial structural schematic diagram of the connecting support rod in this application; Figure 6 is the partial structural schematic diagram of the pressure ring in this application; Figure 7 is the partial structural schematic diagram of the pressure frame in this application; Figure 8 is the partial structural schematic diagram of the side support in this application; Figure 9 is the partial structural schematic diagram of the placing plate in this application; Figure 10 is the partial structural schematic diagram of the first limiting block and the second limiting block in this application; Among them, the reference numerals in the drawings: 1, numerical control machine tool; 2, transfer part; 3, feeding part; 301, tray; 4, processing part; 5, handling arm; 6, transfer tray; 7, special-shaped fastening ring; 8, first electric telescopic rod; 9, connecting support rod; 901, contact point; 10, pressure frame; 11, pressure ring; 12, second electric telescopic rod; 13, side support; 131, first torsion spring; 14, limiting frame; 15, limiting ring plate; 16, material groove; 161, rectangular groove; 17, placing plate; 18, first limiting block; 19, second limiting block; 20, second torsion spring; 21, elastic telescopic rod. Detailed implementation manners

[0019] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will refer to the drawings and combine with the embodiments to detail this application.

[0020] To enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0021] As Figures 1 to 10 shown, this application provides a CNC automatic loading and unloading device, which is applicable to a numerical control machine tool 1. The numerical control machine tool 1 is composed of a transfer part 2, a feeding part 3, and a processing part 4. The transfer part 2 is used to transfer workpieces, the feeding part 3 is used to send workpieces to the processing part 4, and the processing part 4 is used to process workpieces. The feeding part 3 includes a tray 301, which is rotatably arranged inside the numerical control machine tool 1. Workpieces to be processed are placed above the tray 301. The feeding part 3 also includes a manipulator 5 rotatably arranged above the numerical control machine tool 1. The manipulator 5 is used to transfer workpieces of different shapes to the processing part 4; The CNC automatic loading and unloading device is an automated device for the numerical control machine tool 1, aiming to achieve automatic loading and unloading of workpieces, thereby improving production efficiency, reducing labor costs, and enhancing processing accuracy; In specific use, the workpieces to be processed are sent into the feeding part 3 through the transfer part 2. Then, through the tray 301 and the manipulator 5 of the feeding part 3, the workpieces are sent into the processing part 4. Subsequently, the processing part 4 can process the workpieces. After processing is completed, the finished workpieces are again transferred to above the tray 301 by the manipulator 5. Then, it is convenient for the tray 301 to unload materials. In this way, under the action of the manipulator 5 and the tray 301, it is convenient to automatically load and unload workpieces and finished products. Moreover, under the action of the manipulator 5, workpieces of different shapes can be clamped and transferred, the operation is relatively convenient, and there is no need to replace other clamping components, so the application range is wide; It should be noted that in the embodiments of the present invention, the processing method of the processing part 4 for workpieces is a prior art and will not be elaborated in detail here.

[0022] A transfer disk 6 is rotatably arranged inside the numerical control machine tool 1. The transfer disk 6 is rotatably arranged inside the numerical control machine tool 1 through an external motor. The manipulator 5 is fixedly installed above the transfer disk 6. Multiple groups of special-shaped fastening rings 7 are arranged at the end of the manipulator 5 far from the transfer disk 6. The multiple groups of special-shaped fastening rings 7 are used to automatically fix workpieces of different shapes; During operation, refer to the attached Figure 3 and Figure 5As shown in the figure, at this time, multiple groups of special-shaped rings 7 are located on the outer side of the workpiece, and the clamping state of the workpiece is completed. After the workpiece clamping is completed, the transfer disk 6 is controlled to rotate by an external motor. The transfer disk 6 will drive the handling arm 5 and multiple groups of special-shaped fastening rings 7 to rotate, so that the clamped workpiece moves toward the processing part 4, which is convenient for automatic feeding of the workpiece.

[0023] An electric telescopic rod 8 is installed at the end of the handling arm 5 far from the transfer disk 6. The telescopic end of the electric telescopic rod 8 is fixedly installed with a connecting support rod 9. Multiple groups of the special-shaped fastening rings 7 are rotatably arranged on the outer peripheral surface of the connecting support rod 9. A fastening unit is arranged outside the connecting support rod 9. The fastening unit is used to control the rotation of multiple groups of special-shaped fastening rings 7 and fix the workpiece. A contact point 901 is installed on the lower end surface of the connecting support rod 9; during operation, when the special-shaped fastening ring 7 has not clamped the workpiece, first control the transfer disk 6 to drive the handling arm 5 to rotate above the material tray 301 and correspond to the workpiece above the material tray 301. Then control the telescopic end of the electric telescopic rod 8 to move downward, so that the telescopic end of the electric telescopic rod 8 drives the connecting support rod 9 and the special-shaped fastening ring 7 to move downward, so that the special-shaped fastening ring 7 wraps around the outer side of the workpiece. When the contact point 901 at the bottom of the connecting support rod 9 contacts the upper end surface, it means that the special-shaped fastening ring 7 has completely wrapped the workpiece. Therefore, the external circuit is connected, and the external controller will first control the electric telescopic rod 8 to stop moving and control the fastening unit to drive the special-shaped fastening ring 7 to rotate, so that the workpiece can be automatically fixed; When the workpiece clamping is completed, the external controller controls the telescopic end of the electric telescopic rod 8 to move upward again, so that it drives the connecting support rod 9, the fastening unit, multiple groups of special-shaped fastening rings 7 and the workpiece to move upward synchronously. Then control the transfer disk 6 to rotate toward the processing part 4 for feeding and processing. The operation is relatively convenient and the degree of automation is high.

[0024] The fastening unit includes a pressure frame 10 slidably arranged outside the connecting support rod 9. The bottom end of the pressure frame 10 is fixedly installed with a pressure ring 11. The lower end surface of the pressure ring 11 contacts the side wall of the special-shaped fastening ring 7. The shape of the bottom of the pressure ring 11 is arc-shaped. The side wall of the special-shaped fastening ring 7 close to the workpiece is provided with friction lines, and the material at the contact position between the special-shaped fastening ring 7 and the workpiece is rubber. The side wall of the telescopic end of the electric telescopic rod 8 is installed with an electric telescopic rod 12 through a bracket. The electric telescopic rod 12 is arranged above the pressure frame 10. The telescopic end of the electric telescopic rod 12 contacts the upper end surface of the pressure frame 10; During operation, when the contact 901 at the bottom of the connecting rod 9 contacts the upper end surface of the workpiece and the external circuit is connected, the external controller will control the telescopic end of the second electric telescopic rod 12 to move downward, so that the telescopic end of the second electric telescopic rod 12 drives the pressure frame 10 to move downward. Then, the pressure ring 11 below the pressure frame 10 will contact the side wall of the special-shaped fastening ring 7. Under the pressure on the side wall of the special-shaped fastening ring 7, multiple groups of special-shaped fastening rings 7 will rotate toward the workpiece. Then, each group of special-shaped fastening rings 7 will contact the outer surface of the workpiece. Since the material at the contact position between the special-shaped fastening ring 7 and the workpiece is rubber, when it contacts the workpiece and under the pressure of the pressure ring 11 on the special-shaped fastening ring 77, the special-shaped fastening ring 77 will adaptively deform according to the shape of the workpiece and tightly adhere to the surface of the workpiece. With such a design, the clamping of workpieces with different diameters and shapes improves the practicability of this numerical control machine tool 1, the operation is relatively convenient, and there is no need to replace other clamping components.

[0025] The special-shaped fastening ring 7 is rotatably arranged on the outside of the connecting rod 9 through a side bracket 13, and a first torsion spring 131 is arranged at the rotational connection between the special-shaped fastening ring 7 and the side bracket 13; during operation, when the special-shaped fastening ring 7 rotates, it will also drive the first torsion spring 131 connected to it to contract. When the transfer disk 6 rotates toward the processing part 4 and reaches the processing point of the processing part 4, then the telescopic end of the first electric telescopic rod 8 can be controlled to move downward again. The telescopic end of the first electric telescopic rod 8 drives the connecting rod 9 and the special-shaped fastening ring 7 to move downward. Then, the telescopic end of the second electric telescopic rod 12 is controlled to move upward. The telescopic end of the second electric telescopic rod 12 drives the pressure frame 10 and the pressure ring 11 to move upward, so that the pressure ring 11 is far from the side wall of the special-shaped fastening ring 7, that is, the special-shaped fastening ring 7 is not stressed. Then, under the restoration of the elastic force of the first torsion spring 131, the special-shaped fastening ring 7 will disengage from the workpiece, and then the workpiece will automatically fall to the processing point of the processing part 4 to realize the automatic processing of the workpiece.

[0026] A limit frame 14 is installed above the numerical control machine tool 1, and a limit ring plate 15 is installed at the end of the limit frame 14 away from the numerical control machine tool 1. The limit ring plate 15 is located above the material tray 301; during operation, refer to the attached Figure 2 and Figure 3 As shown, when the transfer disk 6 drives the handling hand 5 to rotate toward the side close to the material tray 301, the bracket of the handling hand 5 will contact the limit ring plate 15. This position is the standard workpiece clamping position, so that the above steps can conveniently clamp the workpiece. Moreover, under the limitation of the limit ring plate 15, it can avoid the problem that the rotation angle of the handling hand 5 is too large, resulting in difficulty for the special-shaped fastening ring 7 to clamp the workpiece.

[0027] A plurality of material grooves 16 are formed in the upper end surface of the material tray 301. The material grooves 16 are used for placing workpieces to be processed and processed workpieces. A rectangular groove 161 is formed in the lower side of the groove wall of each material groove 16. A placing plate 17 is slidably arranged inside the rectangular groove 161. The width of the placing plate 17 is greater than the width of the workpiece. During operation, refer to the appendix Figure 2 As shown, when the bracket of the transfer hand 5 contacts the limit ring plate 15, at this time, the special-shaped fastening ring 7 at the bottom of the transfer hand 5 just corresponds to one of the material grooves 16, and then the workpiece can be clamped through the above steps. When the workpiece is processed by the processing part 4 and completed, at this time, the transfer hand 5 is used to send the processed workpiece into the corresponding material groove 16 again, and then the external controller controls the material tray 301 to rotate counterclockwise to complete the blanking of the processed workpiece. It should be noted that during the workpiece processing, the material tray 301 is stationary and does not rotate.

[0028] A first limit block 18 is installed below the placing plate 17. A second limit block 19 is rotatably arranged above the numerical control machine tool 1 at a position corresponding to the first limit block 18. The second limit block 19 is designed along the rotation direction of the material tray 301. During the process of the material tray 301 driving the placing plate 17 to rotate, the first limit block 18 will contact the second limit block 19. A second torsion spring 20 is arranged at the rotation position of the second limit block 19 and the numerical control machine tool 1. The contact position shape of the first limit block 18 and the second limit block 19 is arc-shaped. A recycling box is arranged below the material tray 301. During operation, when the workpiece is processed by the processing part 4 and completed, and when the transfer hand 5 is used to send the processed workpiece into the corresponding material groove 16 again, the external controller controls the material tray 301 to rotate counterclockwise, that is, drives the placing plate 17 and the first limit block 18 to rotate, and rotates to the appendix Figure 9 and Figure 10 As shown in the figure, at this time, the first limit block 18 will contact the second limit block 19, and the second limit block 19 will apply a certain pressure to the first limit block 18, so that the first limit block 18 drives the placing plate 17 to move away from the bottom of the material groove 16, that is, the bottom of the material groove 16 is gradually opened. Since the second limit block 19 is rotatably arranged above the numerical control machine tool 1, under the continuous force of the second limit block 19, the second limit block 19 will rotate at a certain angle. When the placing plate 17 completely moves away from the bottom of the material groove 16, at this time, the second limit block 19 also rotates to the maximum angle. Therefore, the processed workpiece will fall from the unobstructed material groove 16 into the recycling box below, realizing the function of automatically blanking the processed workpiece, and the operation is relatively convenient.

[0029] Two groups of elastic telescopic rods 21 are fixedly connected to the groove walls of the rectangular groove 161. One sides of the two groups of elastic telescopic rods 21 far away from the groove walls of the rectangular groove 161 are connected to the side walls of the placing plate 17. Springs are sleeved on the outer circumferential surfaces of the elastic telescopic rods 21. During operation, when the first limiting block 18 contacts the second limiting block 19 and the second limiting block 19 applies a certain pressure to the first limiting block 18, that is, when the placing plate 17 moves, the placing plate 17 will simultaneously squeeze the elastic telescopic rods 21 on its side walls. After the workpiece after processing is discharged, that is, when the first limiting block 18 is separated from the second limiting block 19, under the elastic force of the second torsion spring 20, the second limiting block 19 will return to its initial position. Under the elastic force of the elastic telescopic rods 21, the placing plate 17 will return to its initial position, thus facilitating the subsequent step-by-step discharging of the remaining processed workpieces.

[0030] A limiting groove adapted to the pressure frame 10 is provided on the outer circumferential surface of the connecting support rod 9. During operation, the provision of the limiting groove can facilitate the movement of the pressure frame 10 along the axial direction of the connecting support rod 9, which is beneficial to the clamping and feeding of the workpiece.

[0031] Working principle: During specific use, the workpiece to be processed is sent into the feeding part 3 through the transfer part 2. Then, through the material tray 301 of the feeding part 3 and the handling hand 5, the workpiece is sent into the processing part 4. Subsequently, the processing part 4 can process the workpiece. After processing is completed, the finished workpiece is again carried above the material tray 301 by the handling hand 5. Then, it is convenient for the material tray 301 to discharge the material. In this way, under the action of the handling hand 5 and the material tray 301, it is convenient to automatically load and unload the workpiece and the finished product. Moreover, under the action of the handling hand 5, workpieces of different shapes can be clamped and transported, and the operation is relatively convenient; Refer to the attached Figure 3 and Figure 5 As shown, at this time, multiple groups of special-shaped rings 7 are located outside the workpiece and are in a state of clamping the workpiece. After the workpiece is clamped, the transfer disk 6 is controlled to rotate by an external motor. The transfer disk 6 will drive the handling hand 5 and multiple groups of special-shaped fastening rings 7 to rotate, so that the clamped workpiece moves towards the processing part 4, thus facilitating the automatic feeding of the workpiece. When the special-shaped fastening ring 7 has not yet clamped the workpiece, first control the transfer disk 6 to drive the handling hand 5 to rotate above the material tray 301 and correspond to the workpiece above the material tray 301. Then, control the telescopic end of the first electric telescopic rod 8 to move downward, so that the telescopic end of the first electric telescopic rod 8 drives the connecting support rod 9 and the special-shaped fastening ring 7 to move downward, so that the special-shaped fastening ring 7 wraps around the outside of the workpiece. When the contact point 901 at the bottom of the connecting support rod 9 contacts the upper end surface, it means that the special-shaped fastening ring 7 has completely wrapped the workpiece at this time. Therefore, the external circuit is connected, and the external controller will first control the first electric telescopic rod 8 to stop moving and control the fastening unit to drive the special-shaped fastening ring 7 to rotate, so that the workpiece can be automatically fixed. When the contact 901 at the bottom of the connecting rod 9 contacts the upper end surface of the workpiece and the external circuit is turned on, the external controller will control the telescopic end of the second electric telescopic rod 12 to move downward, so that the telescopic end of the second electric telescopic rod 12 drives the pressure frame 10 to move downward. Then, the pressure ring 11 below the pressure frame 10 will contact the side wall of the special-shaped fastening ring 7. Under the pressure on the side wall of the special-shaped fastening ring 7, multiple groups of special-shaped fastening rings 7 will rotate toward the workpiece side. Then, each group of special-shaped fastening rings 7 will contact the outer surface of the workpiece. Since the material at the contact position between the special-shaped fastening ring 7 and the workpiece is rubber, when it contacts the workpiece and under the pressure of the pressure ring 11 on the special-shaped fastening ring 77, the special-shaped fastening ring 77 will adaptively deform according to the shape of the workpiece and tightly adhere to the workpiece surface. With such a design, it is possible to clamp workpieces with different diameters and different shapes, improving the applicability of this numerical control machine tool 1, being relatively convenient to operate, and not requiring the replacement of other clamping components; When the special-shaped fastening ring 7 rotates, it will also drive the first torsion spring 131 connected to it to contract. When the transfer disk 6 rotates toward the processing part 4 side and rotates to the processing point of the processing part 4, then the telescopic end of the first electric telescopic rod 8 can be controlled to move downward again. The telescopic end of the first electric telescopic rod 8 drives the connecting rod 9 and the special-shaped fastening ring 7 to move downward. Then, the telescopic end of the second electric telescopic rod 12 is controlled to move upward. The second electric telescopic rod 12 drives the pressure frame 10 and the pressure ring 11 to move upward, so that the pressure ring 11 is away from the side wall of the special-shaped fastening ring 7, that is, the special-shaped fastening ring 7 is not stressed. Then, under the elastic recovery of the first torsion spring 131, the special-shaped fastening ring 7 will disengage from the workpiece, and then the workpiece will automatically fall to the processing point of the processing part 4, realizing the automatic processing of the workpiece; Refer to the appendix Figure 2 and Figure 3 As shown, when the transfer disk 6 drives the transfer hand 5 to rotate toward the side close to the material tray 301, the bracket of the transfer hand 5 will contact the limit ring plate 15. This position is the standard workpiece clamping position, so that it is convenient to clamp the workpiece in the above steps. Moreover, under the limitation of the limit ring plate 15, it can avoid the problem that the rotation angle of the transfer hand 5 is too large, resulting in difficulty for the special-shaped fastening ring 7 to clamp the workpiece; Refer to the appendix Figure 2 As shown, when the bracket of the transfer hand 5 contacts the limit ring plate 15, at this time, the special-shaped fastening ring 7 at the bottom of the transfer hand 5 just corresponds to one of the material grooves 16. Then, the workpiece can be clamped through the above steps; When the workpiece is processed by the processing part 4, then the processed workpiece is sent into the corresponding material groove 16 again through the transfer hand 5. Then, the external controller controls the material tray 301 to rotate counterclockwise, completing the unloading of the processed workpiece; When the workpiece is processed by the processing part 4 and the processed workpiece is sent into the corresponding material groove 16 again through the transfer hand 5, the external controller controls the material tray 301 to rotate counterclockwise, that is, drives the placement plate 17 and the first limit block 18 to rotate, and rotates to the appendix Figure 9 andFigure 10 At the position shown, the first limiting block 18 will come into contact with the second limiting block 19, and the second limiting block 19 will exert a certain pressure on the first limiting block 18, causing the first limiting block 18 to drive the placement plate 17 to move away from the bottom of the material chute 16, that is, the bottom of the material chute 16 is gradually opened. Since the second limiting block 19 is rotatably arranged above the numerical control machine tool 1, under the continuous force on the second limiting block 19, the second limiting block 19 will rotate at a certain angle. When the placement plate 17 completely moves away from the bottom of the material chute 16, at this time, the second limiting block 19 also rotates to the maximum angle. Therefore, the processed workpiece will fall from the unobstructed material chute 16 into the recycling box below, realizing the function of automatically discharging the processed workpiece, and the operation is relatively convenient.

[0032] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A CNC automatic loading and unloading device, characterized in that: The CNC automatic loading and unloading device is suitable for a CNC machine tool, which is composed of a transfer part, a feeding part and a processing part. The transfer part is used to transfer the workpiece, the feeding part is used to send the workpiece to the processing part, and the processing part is used to process the workpiece. The feeding part includes a material tray, which is rotatably arranged on the inner side of the CNC machine tool, and the workpiece to be processed is placed above the material tray. The feeding part also includes a transport hand rotatably arranged above the CNC machine tool, and the transport hand is used to transport workpieces of different shapes to the processing part.

2. A CNC automatic loading and unloading device according to claim 1, characterized in that: A transfer plate is rotatably arranged on the inner side of the CNC machine tool. The transfer plate is rotatably arranged on the inner side of the CNC machine tool by an external motor. The handling arm is fixedly installed above the transfer plate. A plurality of groups of special-shaped fastening rings are arranged on the end of the handling arm away from the transfer plate. The plurality of groups of special-shaped fastening rings are used to automatically fix workpieces of different shapes.

3. A CNC automatic loading and unloading device according to claim 2, characterized in that: An electric telescopic rod is installed at the end of the transport hand away from the transfer plate, and a connecting support rod is fixedly installed on the telescopic end of the electric telescopic rod. Multiple groups of special-shaped fastening rings are rotatably arranged on the outer peripheral surface of the connecting support rod. A fastening unit is arranged on the outer side of the connecting support rod. The fastening unit is used to control the rotation of the multiple groups of special-shaped fastening rings and fix the workpiece. A contact is installed on the lower end surface of the connecting support rod.

4. A CNC automatic loading and unloading device according to claim 3, characterized in that: The fastening unit includes a pressure frame slidably arranged on the outside of the connecting support rod, a pressure ring is fixedly installed on the bottom end of the pressure frame, the lower end face of the pressure ring is in contact with the side wall of the special-shaped fastening ring, the bottom of the pressure ring is in an arc shape, the side wall of the special-shaped fastening ring close to the workpiece is provided with friction lines, and the material of the contact position between the special-shaped fastening ring and the workpiece is rubber, the side wall of the telescopic end of the electric telescopic rod one is installed with an electric telescopic rod two through a bracket, the electric telescopic rod two is arranged above the pressure frame, and the telescopic end of the electric telescopic rod two is in contact with the upper end face of the pressure frame.

5. A CNC automatic loading and unloading device according to claim 4, characterized in that: The special-shaped fastening ring is rotatably arranged on the outer side of the connecting support rod through the side bracket, and a torsion spring is arranged at the rotation connection between the special-shaped fastening ring and the side bracket.

6. A CNC automatic loading and unloading device according to claim 5, characterized in that: A limiting frame is installed above the numerically controlled machine tool, and a limiting ring plate is installed at the end of the limiting frame away from the numerically controlled machine tool, and the limiting ring plate is located above the material tray.

7. The CNC automatic loading and unloading device according to claim 4 is characterized in that: The upper end surface of the material tray is provided with a plurality of material troughs for placing workpieces to be processed and completed. A rectangular groove is provided on the lower side of the groove wall of each material trough, and a placement plate is slidably provided inside the rectangular groove, and the width of the placement plate is greater than the width of the workpiece.

8. The CNC automatic loading and unloading device according to claim 7, characterized in that: A limit block 1 is installed below the placement plate, and a limit block 2 is rotatably arranged above the CNC machine tool and at a position corresponding to the limit block 1. The limit block 2 is designed along the rotation direction of the material tray. When the material tray drives the placement plate to rotate, the limit block 1 will contact the limit block 2. A torsion spring 2 is arranged at the rotation position of the limit block 2 and the CNC machine tool. The contact position of the limit block 1 and the limit block 2 is in an arc shape, and a recovery frame is arranged below the material tray.

9. A CNC automatic loading and unloading device according to claim 8, characterized in that: The groove wall of the rectangular groove is fixedly connected with two groups of elastic telescopic rods, and the sides of the two groups of elastic telescopic rods away from the groove wall of the rectangular groove are connected with the side wall of the placement plate, and the outer peripheral surfaces of the elastic telescopic rods are sleeved with springs.

10. The CNC automatic loading and unloading device according to claim 7, characterized in that: The outer peripheral surface of the connecting support rod is provided with a limiting groove matched with the pressure frame.

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