Full-automatic feeding mechanism of numerical control machine tool

Abstract

The application discloses a full-automatic feeding mechanism of a numerical control machine tool, which is installed on the numerical control machine tool, and the inside of the numerical control machine tool is provided with a shaft head, and comprises a storage structure, a feeding assembly and a blocking type hatch. The storage structure comprises a feeding table, a conveying belt and a storage seat, and a plurality of workpieces are clamped on the storage seat. The feeding assembly comprises a supporting arm, a guide rail, a sliding frame and a transfer structure. The blocking type hatch comprises a transverse push rod motor locked at the left end of the top of the numerical control machine tool, an output seat connected with the tail end of the transverse push rod motor, a top baffle locked at the bottom of the output seat, a turnover structure welded below the top baffle, a guide pipe with a clamping jaw on the turnover structure, and the turnover structure is turned down when the transverse push rod motor is retracted. After the guide pipe is turned down, the guide pipe points to the feeding area of the shaft head, so that the transfer structure does not need to go deep into the numerical control machine tool, the travel of the transfer structure is reduced, and the transfer structure is prevented from being damaged in the extension process or the reversing process of long travel.

Description

Technical Field

[0001] This invention relates to the field of CNC machine tool processing, and in particular to a fully automatic feeding mechanism for CNC machine tools. Background Technology

[0002] A CNC machine tool is an automated machine tool equipped with a program control system. It can operate and process parts according to a pre-programmed sequence. The machining of parts on a CNC machine tool depends primarily on the machining program. Unlike ordinary machine tools, it does not require the manufacture or replacement of numerous molds and fixtures, nor does it require frequent readjustment. Therefore, CNC machine tools are suitable for applications where the parts being machined are frequently changed; that is, they are suitable for single-piece machining, especially for metal parts. They utilize a turret or tool holder to turn a workpiece fixed to a spindle head, shaping it into a suitable form and style.

[0003] In the existing CNC machine tool processing, due to the different workpieces, the feeding mechanism cannot be universal. The manual feeding method is often used, that is, the workpiece is placed into the chuck in the spindle head by hand, the spindle head clamps the chuck to fix the workpiece, and drives the spindle head to start rotating the workpiece, so that the tool moves closer to the spindle head in a translational manner to process the workpiece.

[0004] However, during the processing of faucet valve cores, due to their small size, it is difficult to apply force when manually gripping and feeding them. This makes it difficult to load them onto the shaft head, and it is also difficult to guarantee accuracy after loading. Because different technicians have different operating precision, some valve core clamping parts may not be in place, which directly affects the turning accuracy of the valve core. In severe cases, it may even damage the cutting tool and cause the lathe to stop working.

[0005] Therefore, this invention aims to provide a fully automatic feeding mechanism for CNC machine tools, which can automatically feed small-volume valve core workpieces with high feeding accuracy, ensuring that each feeding reaches the predetermined position, and the setting of the feeding structure does not affect the turning effect. Summary of the Invention

[0006] This invention provides a fully automatic feeding mechanism for CNC machine tools, which can effectively solve the above-mentioned problems.

[0007] This invention is implemented as follows:

[0008] A fully automatic feeding mechanism for a CNC machine tool is installed on the CNC machine tool, wherein the CNC machine tool has a spindle head inside, comprising:

[0009] A material storage structure includes a loading platform disposed on the right side of the CNC machine tool, a conveyor belt fixedly connected to the loading platform, and a material storage seat slidably disposed on the conveyor belt, wherein a plurality of workpieces are clamped on the material storage seat;

[0010] A feeding assembly includes a support arm vertically fixed to the top of the CNC machine tool, a guide rail welded to the support arm, a sliding frame slidably disposed on the guide rail, and a transfer structure locked to the sliding frame and slidably disposed on the guide rail.

[0011] A latching door includes a transverse push rod motor locked to the top left end of the CNC machine tool, an output seat connected to the end of the transverse push rod motor, a top baffle locked to the bottom of the output seat, a flipping structure welded below the top baffle, and a guide tube with chucks on the flipping structure. The flipping structure flips down when the transverse push rod motor retracts, and the guide tube points to the loading area of ​​the shaft head after flipping down.

[0012] As a further improvement, the flipping structure includes a shifting cylinder locked to the bottom of the top baffle, an extension sleeve sleeved outside the output shaft of the shifting cylinder, a swing motor locked on the extension sleeve, and a connecting cylinder clamped to the output shaft of the swing motor, the connecting cylinder being fixedly connected to the top of the guide tube.

[0013] As a further improvement, the swing motor is electrically connected to the transverse push rod motor, and the transverse push rod motor begins to move laterally after the swing motor swings.

[0014] As a further improvement, the guide tube includes a swing frame fixedly connected to the connecting cylinder, and a receiving tube located inside the swing frame. The receiving tube has a two-piece structure and is adapted to the size of the workpiece. The upper part of the swing frame and the receiving tube has an opening.

[0015] As a further improvement, a temporary shield is hinged to the bottom of the swing frame facing the shaft head, and a punching cylinder is connected to the bottom of the swing frame away from the shaft head. After the punching cylinder is pushed out, it passes through the receiving tube and pushes the workpiece aside from the temporary shield to enter the loading area of ​​the shaft head.

[0016] As a further improvement, a guide strip is provided with an upwardly curved bottom edge of the opening, and the guide strip fits into the transfer structure after the transfer structure moves down.

[0017] As a further improvement, the top of the temporary shield is provided with a positioning block fixed to the swing frame, the top of the shaft head is provided with two coolant flushing pipes, and a blocking frame is provided between the two coolant flushing pipes. After the swing frame swings, the positioning block presses against the blocking frame.

[0018] As a further improvement, the blocking frame is equipped with several sensors, the swing frame is equipped with an alignment device, and the sensors are electrically connected to the swing motor.

[0019] As a further improvement, the transfer structure includes a movable frame that slides with the sliding frame, a feeding cylinder welded to the bottom of the movable frame, and a transfer component located below the feeding cylinder for transferring the workpiece.

[0020] As a further improvement, the transfer component includes a reversing motor fixed to the bottom of the feeding cylinder, a mounting base locked below the reversing motor, and clamping heads riveted to the mounting base in two different directions.

[0021] The beneficial effects of this invention are:

[0022] Because the loading position of the robotic arm is far from the feeding position of the CNC machine tool's spindle head, simply extending the cylinder would be difficult and would put a lot of strain on the cylinder and steering structure itself. Therefore, in the process of loading small valve cores, this invention first uses a transfer structure to clamp the unprocessed workpiece on the storage seat. Then, through the cooperation of the sliding frame and the guide rail, the transfer structure is moved to the opening at the top of the CNC machine tool. At the same time, the flipping structure flips and the transverse push rod motor retracts, so the top baffle no longer obstructs the top surface of the CNC machine tool. The transfer structure can then extend into the CNC machine tool and transport the workpiece through the guide tube to the corresponding loading area position at the spindle head. The guide tube can receive the workpiece on the transfer structure, so that the transfer structure does not need to penetrate deep into the CNC machine tool, reducing its stroke and thus avoiding damage during long stroke extension or reversal.

[0023] However, during use, although the guide tube can receive the workpiece, if the guide tube is located inside the CNC machine tool during normal workpiece turning, it will affect the normal movement of the CNC machine tool turret or tool holder. Therefore, this invention further sets up a flipping structure to connect the guide tube to the connecting cylinder of the swing motor. When the workpiece needs to be loaded, the guide tube is directly swung down to correspond with the shaft head, so that the unloading can be carried out smoothly. After the loading action is completed, the transfer structure first retracts, and then the shifting cylinder pushes it out again, so that the top baffle covers the top of the CNC machine tool again. At the same time, the guide tube rotates to be parallel to the top baffle, so that the guide tube does not occupy the space inside the CNC machine tool after loading, and can reach the designated position when needed.

[0024] The guide tube and the flipping structure are linked. If the guide tube does not flip down in time after the flipping structure retracts, it may cause mechanical interference, either damaging the cylinder or deforming the mechanical structure. Therefore, this invention further connects the swing motor and the transverse push rod motor electrically. The transverse push rod motor only begins to retract after the swing motor starts to flip down, so as to form a favorable cycle: retracting after flipping down and pushing outward when lifting up.

[0025] The workpiece entering the guide tube will slide down along the receiving tube inside the guide tube. However, if there is no obstruction, the position of the workpiece may be offset after falling or it may fall directly out of the receiving tube. To address this, the present invention further proposes to set a temporary obstruction plate at the bottom of the swing frame. During the falling phase, the temporary obstruction plate can completely seal the discharge end of the guide tube, so that the workpiece will not fall directly out of the receiving tube when it slides down. During the loading phase, the workpiece is directly pushed into the position of the shaft head by the punching cylinder, and the shaft head can then clamp it. This makes it easy to limit the position of the workpiece without affecting the normal loading action.

[0026] After the guide tube is tilted downwards, it needs to be raised a certain distance to ensure that it is as close as possible to the feeding area of ​​the shaft head. During the lifting phase, it is difficult to judge or predict its specific lifting stroke. This invention further proposes to set a blocking frame between the two coolant flushing pipes. After the guide tube is raised, its positioning block will touch the blocking frame and be physically blocked, thereby relieving its lifting action. Although physical interference can stop its upward trend, it still cannot stop the swing motor directly. Therefore, this invention also sets an alignment device on the swing frame and arranges sensors on the blocking frame. After the alignment device and the sensor form a conflict relationship, the swing motor can only stop because the sensor is electrically connected to the swing motor, thus avoiding the swing motor from idling after being physically interfered with.

[0027] In traditional transfer structures, only one workpiece can be transported at a time during the transfer process. Then, it is necessary to move back and forth to clamp the workpiece again. This not only tends to extend the working time but also easily leads to the moving end not moving into place, resulting in inaccurate clamping. To address this, the present invention proposes to set two different clamping heads on the same mounting base. By switching the position of the reversing motor, two workpieces can be clamped in a single clamping phase. After one loading, the position of the clamping head can be reversed to allow for a second loading after the workpiece is processed, eliminating the need for frequent back-and-forth movements and reducing errors during the feeding process. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a front view structural schematic diagram of a fully automatic feeding mechanism for CNC machine tools according to the present invention.

[0030] Figure 2 This is a schematic diagram of the internal structure of a fully automatic feeding mechanism for CNC machine tools according to the present invention.

[0031] Figure 3 This is a schematic diagram of the operation of a fully automatic feeding mechanism for a CNC machine tool according to the present invention.

[0032] Figure 4 This is a schematic diagram of a flipping structure according to the present invention.

[0033] Figure 5 This is a schematic diagram of the structure of a feed tube according to the present invention.

[0034] Figure 6 This is a schematic diagram of the operation of a feed tube according to the present invention.

[0035] Figure 7 This is a schematic diagram of the structure of a coolant flushing pipe according to the present invention.

[0036] Figure 8 This is a schematic diagram of a transfer structure according to the present invention. Detailed Implementation

[0037] All embodiments of the present invention are intended to fall within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0038] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating that the purpose, technical solution, and advantages of the method are clearer. The technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without inventive effort indicate or imply the relative importance of the indicated technical features. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0039] It should be emphasized that the CNC machine tool in this embodiment is used to process the valve core of the faucet, and the corresponding fully automatic feeding mechanism is also used to feed the valve core. However, this embodiment is also applicable to the processing of small workpieces.

[0040] Reference Figures 1 to 8As shown, a fully automatic feeding mechanism for a CNC machine tool includes: a shaft head B installed on a CNC machine tool A, wherein a shaft head B is provided inside the CNC machine tool; characterized in that it includes: a storage structure 10, the storage structure 10 including a feeding platform 11 disposed on the right side of the CNC machine tool A, a conveyor belt 12 fixed to the feeding platform 11, and a storage seat 13 slidably disposed on the conveyor belt 12, wherein a plurality of workpieces are clamped on the storage seat 13; and a feeding assembly 20, the feeding assembly 20 including a support arm 21 vertically fixed to the top of the CNC machine tool A, a guide rail 22 welded to the support arm 21, and a guide rail 22 slidably disposed on the guide rail 21. The sliding frame 23 on the 2nd, the transfer structure 24 locked to the sliding frame 23 and slidably disposed on the guide rail 22; a stop-type door 30, the stop-type door 30 including a transverse push rod motor 31 locked to the top left end of the CNC machine tool A, an output seat 32 connected to the end of the transverse push rod motor 31, a top baffle 33 locked to the bottom of the output seat 32, a flipping structure 34 welded below the top baffle 33, a guide tube 35 with chucks on the flipping structure 34, the flipping structure 34 flipping down when the transverse push rod motor 31 retracts, and the guide tube 35 pointing towards the loading area of ​​the shaft head B after flipping down.

[0041] In this embodiment, the storage seat 13 has several grooves that can accommodate multiple workpieces at the same time. The unprocessed workpieces are placed on the storage seat 13 and the storage seat 13 is placed on the conveyor belt 12. The position of the storage seat 13 in the X-axis direction is changed by the conveyor belt 12, while the position adjustment in the Y-axis and Z-axis directions is changed by the feeding assembly 20 itself.

[0042] After the workpieces on the storage seat 13 are used up, a new storage seat 13 filled with workpieces can be replaced and transferred to the conveyor belt 12, thus forming a virtuous cycle.

[0043] During the workpiece transfer process, the transfer structure 24 slides along the guide rail 22 via the sliding frame 23 to the position of the corresponding storage seat 13. The transfer structure 24 descends and clamps the workpiece before resetting, and then slides along the guide rail 22 to the position of the blocking door 30.

[0044] In existing automatic feeding structures, some utilize robotic arms for loading, but rarely are workpieces directly loaded to the spindle head B position. Manual intervention is often required. Since the robotic arm's loading position is quite far from the CNC machine tool A's spindle head B feeding position, simply extending the cylinder is not only difficult but also puts significant strain on the cylinder and steering structure itself. Therefore, in the process of loading small-volume valve cores, this invention first uses the transfer structure 24 to clamp the unprocessed workpiece on the storage seat 13, and then uses the sliding frame 23 and guide rail 22... The transfer structure 24 is moved to the opening at the top of the CNC machine tool A, allowing the flipping structure 34 to flip while the transverse push rod motor 31 retracts. The top baffle 33 no longer obscures the top surface of the CNC machine tool A. The transfer structure 24 can extend into the CNC machine tool A and transport the workpiece through the guide tube 35 to the corresponding loading area position of the spindle head B. The guide tube 35 can receive the workpiece on the transfer structure 24, so that the transfer structure 24 does not need to go deep into the CNC machine tool A, reducing its stroke and thus avoiding damage during long stroke extension or reversal.

[0045] In the above process, the transfer structure 24 can load materials without moving to a position directly opposite the shaft head B. However, during use, although the guide tube 35 can receive the workpiece, if the guide tube 35 is located inside the CNC machine tool A during normal workpiece turning, it will affect the normal movement of the CNC machine tool A's turret or tool holder. To address this, the flipping structure 34 includes a shifting cylinder 341 locked to the bottom of the top baffle 33, an extension sleeve 342 sleeved outside the output shaft of the shifting cylinder 341, a swing motor 343 locked to the extension sleeve 342, and a connecting sleeve 344 clamped to the output shaft of the swing motor 343. The connecting cylinder 344 is fixedly connected to the top of the guide tube 35. By further setting the flipping structure 34, the guide tube 35 is connected to the connecting cylinder 344 of the swing motor 343. When the workpiece needs to be loaded, the guide tube 35 is directly swung down to correspond with the shaft head B, so that the loading can be carried out smoothly. After the loading action is completed, the transfer structure 24 retracts first, and then the shifting cylinder 341 pushes out again, so that the top baffle 33 covers the top of the CNC machine tool A again. At the same time, the guide tube 35 rotates to be parallel to the top baffle 33, so that the guide tube 35 does not occupy the space inside the CNC machine tool A after the loading is completed, and can reach the designated position when needed.

[0046] As can be seen from the above, the guide tube 35 and the flipping structure 34 are linked. If the guide tube 35 does not flip down in time after the flipping structure 34 retracts, it may cause mechanical interference, either damaging the cylinder or deforming the mechanical structure. Therefore, the swing motor 343 is electrically connected to the transverse push rod motor 31. After the swing motor 343 swings, the transverse push rod motor 31 begins to move laterally, so that the swing motor 343 and the transverse push rod motor 31 are electrically connected. Only after the swing motor 343 begins to flip down does the transverse push rod motor 31 begin to retract, so as to form a favorable cycle. It retracts after flipping down and pushes outward when lifting up, so as to stably and orderly switch between different states.

[0047] During the feeding process, the transfer structure 24 places the clamped workpiece into the guide tube 35, which then slides to the position corresponding to the shaft head B. To control the sliding speed and direction of the workpiece, the guide tube 35 includes a swing frame 351 fixed to the connecting cylinder 344 and a receiving tube 352 located inside the swing frame 351. The receiving tube 352 has a two-piece structure and is adapted to the size of the workpiece. The upper part of the swing frame 351 and the receiving tube 352 has an opening 353, which is used to receive the workpiece placed by the transfer structure 24. As can be seen from the figure, the receiving tube 352 has certain textures, so that the workpiece will not slide directly to the bottom during the sliding process, but will automatically and slowly slide down to the bottom of the receiving tube 352.

[0048] The workpiece entering the guide tube 35 will slide downwards along the receiving tube 352 inside the guide tube 35. However, without a shield, the workpiece may shift position or fall directly out of the receiving tube 352 after falling. To address this, a temporary shield 3511 is hinged to the bottom of the swing frame 351 on the side facing the shaft head B. A punching cylinder 354 is connected to the bottom of the swing frame 351 on the side away from the shaft head B. After the punching cylinder 354 is pushed out, it penetrates the receiving tube 352 and pushes the workpiece open. The temporary shielding plate 3511 enters the loading area of ​​the shaft head B. By setting the temporary shielding plate 3511 at the bottom of the swing frame 351, during the falling phase, the temporary shielding plate 3511 can completely seal the discharge end of the guide tube 35, so that the workpiece will not fall directly out of the receiving tube 352 when it slides down. During the loading phase, the workpiece is directly pushed into the position of the shaft head B by the punching cylinder 354, and the shaft head B can then clamp it. This makes it easy to limit the workpiece while not affecting the normal loading action.

[0049] It should be emphasized that the receiving tube 352 is not a simple cylindrical structure. It is only set with two pieces at the front and back, and there is a connecting structure on the left and right sides only in the middle section, so that it can make way for the temporary shielding piece 3511 and the punching cylinder 354 at the bottom.

[0050] To facilitate better cooperation between the opening 353 of the receiving tube 352 and the transfer structure 24, and to facilitate the entry of the workpiece into the receiving tube 352, a guide strip 3531 is provided with an upwardly curved bottom edge of the opening 353. After the transfer structure 24 moves down, the guide strip 3531 fits into the transfer structure 24. After the transfer structure 24 moves down, it releases the workpiece, which can slide into the receiving tube 352 along the arc of the guide strip 3531. Then, it is limited by the narrow shape of the receiving tube 352, so it is not easy to deviate. The guide strip 3531 is an elastic structure that can be flattened when the receiving tube 352 is rolled up to a parallel state, without occupying space.

[0051] Since the guide tube 35 is located at the bottom of the top baffle 33, it needs to be unfolded first. After unfolding, it needs to be reconnected to the position of the shaft head B. That is, after the guide tube 35 is flipped down, it needs to be raised a certain distance to ensure that it is as close as possible to the feeding area of ​​the shaft head B. During its raising stage, it is difficult to judge or predict its specific raising stroke. The top of the temporary shield 3511 is provided with a positioning block 355 fixed to the swing frame 351. The top of the shaft head B is provided with two coolant flushing pipes C. A blocking frame C1 is provided between the two coolant flushing pipes C. After the swing frame 351 swings, the positioning block 355 presses against the blocking frame C1. The blocking frame C1 is provided between the two coolant flushing pipes C. After the guide tube 35 is raised, its positioning block 355 will touch the blocking frame C1 and be physically blocked, thereby relieving its raising action.

[0052] However, while physical interference can stop the upward trend, it cannot directly stop the swing motor 343. To address this, several sensors C11 are installed on the blocking frame C1, and an alignment device 3551 is installed on the swing frame 351. The sensors C11 are electrically connected to the swing motor 343. By installing the alignment device 3551 on the swing frame 351 and the sensors C11 on the blocking frame C1, the swing motor 343 can only stop after the alignment device 3551 and the sensors C11 conflict with each other, and because the sensors C11 are electrically connected to the swing motor 343. This prevents the swing motor 343 from idling after physical interference.

[0053] Specifically, sensor C11 can be a pressure sensor, while the alignment device 3551 can be any pressure-applying element, such as a pressure roller or pressure plate, as long as it can generate a signal from the pressure sensor. Alternatively, sensor C11 can be a light sensor, while the alignment device 3551 can be any structure that blocks light, such as a light shield or baffle.

[0054] The transfer structure 24 in this embodiment has all the functions of a conventional transfer structure 24. Specifically, the transfer structure 24 includes a movable frame 241 that slides with the sliding frame 23, a feeding cylinder 242 welded to the bottom of the movable frame 241, and a transfer component 243 located below the feeding cylinder 242 for transferring workpieces. The feeding cylinder 242 has a lifting effect, and the transfer component 243 has a clamping and lowering effect. However, existing transfer structures 24 can generally only transport one workpiece at a time during the transfer process, and then need to move back and forth to clamp the workpiece again. This not only easily prolongs the working time, but also easily leads to the movement of the movable end being unstable. If the clamping is not precise enough, the transfer component 243 includes a reversing motor 2431 fixed to the bottom of the unloading cylinder 242, a mounting base 2432 locked below the reversing motor 2431, and clamping heads 2433 riveted to the mounting base 2432 in two different directions. By setting two different sets of clamping heads 2433 on the same mounting base 2432, the reversing motor 2431 can clamp two workpieces in a single clamping stage. After one loading, the position of the clamping heads 2433 can be reversed to allow for a second loading after the workpiece is processed, so that it does not need to move back and forth frequently and reduces the error in the feeding process.

[0055] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A fully automatic feeding mechanism for a CNC machine tool, installed on a CNC machine tool (A), wherein a spindle head (B) is provided inside the CNC machine tool, characterized in that, include: A material storage structure (10) includes a loading platform (11) disposed on the right side of the CNC machine tool (A), a conveyor belt (12) fixedly connected to the loading platform (11), and a material storage seat (13) slidably disposed on the conveyor belt (12), wherein a number of workpieces are clamped on the material storage seat (13); A loading assembly (20) includes a support arm (21) vertically fixed to the top of the CNC machine tool (A), a guide rail (22) welded to the support arm (21), a sliding frame (23) slidably disposed on the guide rail (22), and a transfer structure (24) locked to the sliding frame (23) and slidably disposed on the guide rail (22). A latch-type hatch (30) includes a transverse push rod motor (31) locked to the top left end of the CNC machine tool (A), an output seat (32) connected to the end of the transverse push rod motor (31), a top baffle (33) locked to the bottom of the output seat (32), a flip structure (34) welded below the top baffle (33), and a guide tube (35) with cleats on the flip structure (34). The flip structure (34) flips down when the transverse push rod motor (31) retracts, and the guide tube (35) points to the loading area of ​​the shaft head (B) after flipping down. The flipping structure (34) includes a shifting cylinder (341) locked to the bottom of the top baffle (33), an extension sleeve (342) sleeved outside the output shaft of the shifting cylinder (341), a swing motor (343) locked on the extension sleeve (342), and a connecting sleeve (344) clamped to the output shaft of the swing motor (343). The connecting sleeve (344) is fixedly connected to the top of the guide tube (35). The guide tube (35) includes a swing frame (351) fixedly connected to the connecting cylinder (344), and a receiving tube (352) located inside the swing frame (351). The receiving tube (352) has a two-piece structure and is adapted to the size of the workpiece. The upper part of the swing frame (351) and the receiving tube (352) has an opening (353).

2. The fully automatic feeding mechanism for CNC machine tools according to claim 1, characterized in that, The swing motor (343) is electrically connected to the transverse push rod motor (31). After the swing motor (343) swings, the transverse push rod motor (31) begins to move laterally.

3. The fully automatic feeding mechanism for CNC machine tools according to claim 1, characterized in that, A temporary shield (3511) is hinged to the bottom of the swing frame (351) facing the shaft head (B). A punching cylinder (354) is connected to the bottom of the swing frame (351) away from the shaft head (B). After the punching cylinder (354) is pushed out, it passes through the receiving tube (352) and causes the workpiece to push open the temporary shield (3511) and enter the loading area of ​​the shaft head (B).

4. The fully automatic feeding mechanism for CNC machine tools according to claim 1, characterized in that, The bottom edge of the opening (353) is curved upward and a guide strip (3531) is provided. The guide strip (3531) fits into the transfer structure (24) after the transfer structure (24) moves down.

5. The fully automatic feeding mechanism for CNC machine tools according to claim 3, characterized in that, The top of the temporary shield (3511) is provided with a positioning block (355) fixed to the swing frame (351). The top of the shaft head (B) is provided with two coolant flush pipes (C). A blocking frame (C1) is provided between the two coolant flush pipes (C). After the swing frame (351) swings, the positioning block (355) presses against the blocking frame (C1).

6. The fully automatic feeding mechanism for CNC machine tools according to claim 5, characterized in that, The blocking frame (C1) is equipped with several sensors (C11), and the swing frame (351) is equipped with a aligner (3551). The sensors (C11) are electrically connected to the swing motor (343).

7. The fully automatic feeding mechanism for CNC machine tools according to claim 1, characterized in that, The transfer structure (24) includes a movable frame (241) that slides with the sliding frame (23), a feeding cylinder (242) welded to the bottom of the movable frame (241), and a transfer component (243) located below the feeding cylinder (242) for transferring workpieces.

8. The fully automatic feeding mechanism for CNC machine tools according to claim 7, characterized in that, The transfer component (243) includes a reversing motor (2431) fixed to the bottom of the feeding cylinder (242), a mounting base (2432) locked below the reversing motor (2431), and clamping heads (2433) riveted to the mounting base (2432) in two different directions.

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