Automatic turnover machine with safety protection function

Abstract

The invention discloses an automatic turnover machine with a safety protection function, and relates to the technical field of printed matter conveying. The device comprises a rack, a bottom frame is fixedly connected to the bottom face of the rack, conveying mechanisms used for transferring plates are symmetrically arranged on the left side and the right side of the interior of the rack, and a receiving assembly used for transferring the plates and turning over the plates is arranged between the two conveying mechanisms; a receiving assembly is arranged on the top face of the bottom frame, a pressing assembly used for limiting a plate is installed on the top face of the receiving assembly, a reversing assembly used for controlling the receiving assembly to rotate in the vertical plane is arranged below the receiving assembly, and a control box is fixedly connected to the middle of the bottom frame. According to the plate turnover device, the plate can be effectively limited in the turnover process, the situation that the plate slips in the turnover process is avoided, the turnover process is more stable, and the safety protection effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of printed matter transportation, and particularly relates to an automatic turnover machine with safety protection. Background Art

[0002] In the field of industrial printing, double-sided printing operations usually require the plate to be turned over after single-sided printing is completed. Currently, mainstream printing equipment generally adopts a single-sided printing mode, which makes the turning process an indispensable key link in the double-sided printing process. The traditional manual turning method has obvious technical defects: firstly, the operation efficiency is low and it is difficult to match the rhythm requirements of modern printing production lines; secondly, there are safety hazards in manual operations, and operators are prone to mechanical injury accidents when contacting high-speed production lines; furthermore, it is difficult to guarantee the positioning accuracy of manual turning, which is likely to cause overprint deviation during secondary printing and affect the quality of finished products.

[0003] In response to this problem, various automatic turning devices have been developed in the industry. Although the existing technical solutions represented by the authorized announcement number CN219258985U have achieved the function of automatic turning, there are still significant technical limitations: the plate cannot be effectively limited during the turning process, and the plate may slip off during the turning process of the plate, which not only affects production safety but also may damage the equipment.

[0004] Therefore, an automatic turnover machine with safety protection is proposed. Summary of the Invention

[0005] The purpose of the present invention is: to solve the problems mentioned in the above background art, the present invention provides an automatic turnover machine with safety protection.

[0006] The present invention specifically adopts the following technical solutions to achieve the above purpose:

[0007] An automatic turnover machine with safety protection, including a frame, the bottom surface of the frame is fixedly connected with a chassis, the left and right sides inside the frame are symmetrically provided with conveying mechanisms for conveying plates, a receiving component for transferring the plates and turning them over is arranged between the two conveying mechanisms, a pressing component for limiting the plates is installed on the top surface of the receiving component, a reversing component for controlling the receiving component to rotate in a vertical plane is arranged below the receiving component, a control box is fixedly connected to the middle of the chassis, a lifting control component for controlling the vertical movement of the reversing component is installed on the surface of the control box, an installation frame is fixedly connected to the right side of the top surface of the frame, and a positioning component for adjusting the position of the plate is installed on the surface of the installation frame.

[0008] Further, the conveying mechanism includes a first motor, and the first motor is fixedly installed on the front surface of the frame. The output end of the first motor is fixedly connected to a first rotating shaft, and the end of the first rotating shaft is rotatably connected to the inner wall of the frame. A plurality of driving wheels are fixedly sleeved on the surface of the first rotating shaft, a conveyor belt is engaged with the surface of the driving wheels, and a tensioning assembly for supporting the conveyor belt is installed on the inner wall of the frame.

[0009] Further, the tensioning assembly includes a fixing frame, and the fixing frame is fixedly connected to the inner wall of the frame. The end of the fixing frame is rotatably connected to a second rotating shaft, a tensioning wheel is fixedly sleeved on the surface of the second rotating shaft, and the tensioning wheel is engaged with the conveyor belt.

[0010] Further, the receiving assembly includes an end plate. A plurality of supporting plates are fixedly connected to the left side surface of the end plate, and the supporting plates are arranged staggered with the conveyor belt. A support is fixedly connected to the top surface of the end plate. A transmitting end of a pair of photoelectric sensors and a receiving end of the pair of photoelectric sensors are fixedly installed at the end of the support, and the transmitting end of the pair of photoelectric sensors and the receiving end of the pair of photoelectric sensors are arranged vertically in alignment. The height of the receiving end of the pair of photoelectric sensors is lower than that of the supporting plate.

[0011] Further, the pressing assembly includes an electric push rod, and the electric push rod is fixedly installed on the bottom surface of the supporting plate. The telescopic end of the electric push rod is fixedly connected to a connecting rod. A fixed seat is fixedly connected to the top surface of the supporting plate, and the connecting rod is slidably connected to the fixed seat. The left end of the connecting rod is fixedly connected to a pressing strip, and a rubber pad is fixedly connected to the bottom surface of the pressing strip.

[0012] Further, the reversing assembly includes a support disc. A second motor is fixedly installed on the back surface of the support disc. The output end of the second motor is fixedly connected to a third rotating shaft, and the third rotating shaft is rotatably connected to the support disc. The front end of the third rotating shaft is fixedly connected to a connecting frame, and the front surface of the connecting frame is fixedly connected to the rear end of the end plate.

[0013] The reversing assembly further includes a limiting rod, and the limiting rod is fixedly connected to the third rotating shaft. A ball is rotatably connected to the bottom end of the limiting rod. An annular groove is formed on the top surface of the support disc, and the inner wall of the annular groove is rotatably connected to the surface of the ball.

[0014] The lifting control assembly includes a fourth motor, and the fourth motor is fixedly installed at the bottom of the inner wall of the control box. The output end of the fourth motor is fixedly connected to a threaded rod, and the top end of the threaded rod is rotatably connected to the inner wall of the control box. A U-shaped frame is threadedly connected to the surface of the threaded rod, and the U-shaped frame is movably inserted into the top of the control box, and the top end of the U-shaped frame is fixedly connected to the bottom surface of the support disc.

[0015] The alignment component includes a fifth motor, and the fifth motor is fixedly installed on the front surface of the mounting frame. The output end of the fifth motor is fixedly connected to a double-headed screw. Two support rods are threadedly connected to the surface of the double-headed screw. The end of the support rod is fixedly connected to a side plate. A sliding column is fixedly connected to the inner wall of the mounting frame, and the surface of the sliding column is slidably connected to the support rod.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The present invention is used in cooperation with a printing machine. The sheet material that has been printed on one side is conveyed to the right through the conveying mechanism on the left. The receiving component can detect whether the right end of the sheet material reaches the predetermined position. After reaching the predetermined position, the conveying mechanism pauses. The lifting control component controls the reversing component and the receiving component to rise to lift the sheet material, so that the sheet material is separated from the surface of the left conveying mechanism. Subsequently, the pressing component operates to clamp and fix the sheet material. Then, the reversing component operates to flip the receiving component, making the other side of the sheet material face upward and making the receiving component reach above the right conveying mechanism. Subsequently, the pressing component releases the limit on the sheet material, and the lifting control component controls the reversing component and the receiving component to descend. Finally, the sheet material falls on the top surface of the right conveying mechanism. Then, through the operation of the alignment component, the sheet material can be aligned. Subsequently, the right conveying mechanism operates to drive the flipped sheet material to move, and in cooperation with the printing machine, the other side can be printed. The present invention realizes the effect of facilitating the automatic flipping of the sheet material during use, thus facilitating double-sided printing. During the flipping process, the sheet material can be effectively limited, avoiding the situation of slipping during the flipping process, making the flipping process more stable, and playing a role in safety protection.

[0018] 2. The pressing component of the present invention drives the connecting rod and the pressing strip to move downward through the electric push rod, so that the rubber pad at the bottom of the pressing strip closely adheres to the surface of the sheet material, thereby clamping and fixing the sheet material. It can not only effectively prevent the sheet material from slipping due to inertia or external force during the flipping process, but also ensure that the sheet material always maintains a stable state during the flipping process. The use of the rubber pad also increases the friction with the sheet material, further improving the reliability of clamping. Through the limiting effect of the pressing component, production accidents and equipment damage caused by the slipping of the sheet material are avoided, significantly improving the safety and stability of the production process.

[0019] 3. The reversing component of the present invention drives the third rotating shaft to rotate through the second motor on the support disk, and the connecting frame drives the receiving component to perform a 180-degree flip in the vertical plane. This process not only realizes the rapid conversion of the sheet material from one side facing upward to the other side facing upward, but also ensures the accuracy and stability of the flipping action.

[0020] 4. During the flipping process of the present invention, the lifting control component first lifts the receiving component and the plate to separate them from the surface of the left conveying mechanism, providing sufficient space for the flipping operation; after the flipping is completed, the receiving component and the plate are steadily lowered to the top of the right conveying mechanism to ensure that the plate can accurately fall on the conveyor belt, thereby ensuring a smooth transition of the plate during the flipping process and improving the reliability and safety of the entire flipping process.

[0021] 5. The present invention sets a straightening component. When the plate falls on the top surface of the right conveying mechanism after being turned over, the fifth motor drives the double-headed screw to rotate, driving the two support rods to slide along the surface of the sliding column, so that the two side plates are close to each other. Through the contact between the side plates and the front and back sides of the plate, the position of the plate can be accurately adjusted to straighten it and maintain the correct relative position with the conveying mechanism. This straightening function not only avoids printing quality problems caused by plate position deviation, such as overprint deviation, but also improves printing accuracy and yield. In addition, the automatic adjustment function of the straightening component reduces manual intervention, further improves production efficiency and automation, and makes the entire double-sided printing process more efficient and accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the conveying mechanism of the present invention;

[0024] Figure 3 It is a schematic diagram of the local structure of the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of the structural receiving assembly of the present invention;

[0026] Figure 5 It is a right view of the control box structure of the present invention;

[0027] Figure 6 It is a front cross-sectional view of the control box structure of the present invention;

[0028] Figure 7 It is a structural schematic diagram of the connecting frame of the present invention;

[0029] Figure 8 is a side view of the straightening assembly structure of the present invention;

[0030] Figure 9 It is a schematic diagram of the support plate structure of the present invention;

[0031] Reference numerals: 1, frame; 2, chassis; 3, conveying mechanism; 301, first motor; 302, first rotating shaft; 303, driving wheel; 304, conveyor belt; 305, fixing frame; 306, second rotating shaft; 307, tensioning wheel; 4, receiving assembly; 401, end plate; 402, supporting plate; 403, bracket; 404, transmitting end of opposed beam sensor; 405, receiving end of opposed beam sensor; 5, pressing assembly; 501, electric push rod; 502, fixed seat; 503, connecting rod; 504, pressing strip; 6, reversing assembly; 601, supporting disc; 602, second motor; 603, third rotating shaft; 604, connecting frame; 605, limiting rod; 606, ball; 607, annular groove; 7, control box; 8, lifting control assembly; 801, fourth motor; 802, threaded rod; 803, U-shaped frame; 9, aligning assembly; 901, fifth motor; 902, double-headed screw rod; 903, sliding column; 904, supporting rod; 905, side plate; 10, mounting frame. Detailed implementation manners

[0032] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0033] 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 present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0034] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, the terms "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0035] The electrical components appearing in this text are all electrically connected to an external main controller and 220V mains power, and the main controller can be a conventional known device such as a computer for control.

[0036] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "inside", "outside", "upper", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0037] As Figures 1 to 9 shown, an automatic turnover machine with safety protection includes a frame 1. A chassis 2 is fixedly connected to the bottom surface of the frame 1. Conveying mechanisms 3 for conveying plates are symmetrically arranged on the left and right sides inside the frame 1. A receiving assembly 4 for transferring and turning over the plates is arranged between the two groups of conveying mechanisms 3. A pressing assembly 5 for limiting the plates is installed on the top surface of the receiving assembly 4. A reversing assembly 6 for controlling the rotation of the receiving assembly 4 in the vertical plane is arranged below the receiving assembly 4. A control box 7 is fixedly connected to the middle of the chassis 2. An elevation control assembly 8 for controlling the vertical movement of the reversing assembly 6 is installed on the surface of the control box 7. An installation frame 10 is fixedly connected to the right side of the top surface of the frame 1. An alignment assembly 9 for adjusting the position of the plates is installed on the surface of the installation frame 10. More specifically, the present invention is used in cooperation with a printing machine. The plate after one-sided printing is conveyed from the left conveying mechanism 3 to the right. The receiving assembly 4 can detect whether the right end of the plate reaches the predetermined position. After reaching the predetermined position, the conveying mechanism 3 stops operating. The reversing assembly 6 and the receiving assembly 4 are controlled by the elevation control assembly 8 to rise, lifting the plate so that the plate is separated from the surface of the left conveying mechanism 3. Subsequently, the pressing assembly 5 operates to clamp and fix the plate. Then, the reversing assembly 6 operates to turn over the receiving assembly 4, making the other side of the plate face up and the receiving assembly 4 reach above the right conveying mechanism 3. Subsequently, the pressing assembly 5 releases the limitation on the plate, and the elevation control assembly 8 controls the reversing assembly 6 and the receiving assembly 4 to descend. Finally, the plate lands on the top surface of the right conveying mechanism 3. Then, the alignment assembly 9 operates to align the plate. Subsequently, the right conveying mechanism 3 operates to drive the turned-over plate to move, and in cooperation with the printing machine, the other side can be printed.

[0038] The conveying mechanism 3 includes a first motor 301, and the first motor 301 is fixedly installed on the front surface of the frame 1. The output end of the first motor 301 is fixedly connected to a first rotating shaft 302, and the end of the first rotating shaft 302 is rotatably connected to the inner wall of the frame 1. A plurality of driving wheels 303 are fixedly sleeved on the surface of the first rotating shaft 302, a conveyor belt 304 is engaged with the surface of the driving wheels 303, and a tensioning assembly for supporting the conveyor belt 304 is installed on the inner wall of the frame 1. It should be noted that by operating the first motor 301, the first rotating shaft 302 is driven to rotate, the driving wheels 303 can be driven to rotate, and then the conveyor belt 304 can be controlled to rotate. Under the action of the tensioning assembly, the conveyor belt 304 can be ensured to be tightened and operate normally.

[0039] The tensioning assembly includes a fixing frame 305, and the fixing frame 305 is fixedly connected to the inner wall of the frame 1. The end of the fixing frame 305 is rotatably connected to a second rotating shaft 306, a tensioning wheel 307 is fixedly sleeved on the surface of the second rotating shaft 306, and the tensioning wheel 307 is engaged with the conveyor belt 304. More specifically, through the cooperation of the fixing frame 305, the second rotating shaft 306 and the tensioning wheel 307, the inner wall of the conveyor belt 304 can be supported, so that the conveyor belt 304 can be in a tightened state. When the conveyor belt 304 rotates, the tensioning wheel 307 can rotate with the conveyor belt 304 to provide reliable support for the conveyor belt 304.

[0040] The receiving assembly 4 includes an end plate 401. A plurality of supporting plates 402 are fixedly connected to the left side surface of the end plate 401, and the supporting plates 402 are arranged staggered with the conveyor belt 304. A bracket 403 is fixedly connected to the top surface of the end plate 401. A transmitting end 404 and a receiving end 405 of an opposed sensor are fixedly installed at the end of the bracket 403, and the transmitting end 404 and the receiving end 405 of the opposed sensor are arranged vertically opposite to each other, and the height of the receiving end 405 of the opposed sensor is lower than that of the supporting plate 402. It should be noted that when the receiving assembly 4 is located on the left side, the conveying mechanism 3 will drive the plate to be conveyed to the right until the plate blocks the space between the transmitting end 404 and the receiving end 405 of the opposed sensor. The receiving end 405 of the opposed sensor will no longer be able to receive the signal emitted from the transmitting end 404 of the opposed sensor. At this time, the left conveying mechanism 3 stops operating. Then, through the lifting control assembly 8, the reversing assembly 6 and the end plate 401 can be driven to rise, and then the supporting plate 402 can be driven to rise. The supporting plate 402 will contact the bottom surface of the plate and lift the plate, so that the bottom surface of the plate is separated from the top surface of the conveyor belt 304. Subsequently, the pressing assembly 5 is used to clamp and fix the plate. When the receiving assembly 4 is flipped to the right side, the electric push rod 501 drives the connecting rod 503 and the pressing strip 504 to descend, and the plate will move downward along the surface of the pressing strip 504. Finally, the plate contacts the top surface of the right conveyor belt 304, and the receiving assembly 4 and the pressing assembly 5 will no longer contact the plate.

[0041] The pressing assembly 5 includes an electric push rod 501, and the electric push rod 501 is fixedly installed on the bottom surface of the supporting plate 402. The telescopic end of the electric push rod 501 is fixedly connected with a connecting rod 503. A fixed seat 502 is fixedly connected to the top surface of the supporting plate 402, and the connecting rod 503 is slidably connected with the fixed seat 502. The left end of the connecting rod 503 is fixedly connected with a pressing strip 504, and a rubber pad is fixedly connected to the bottom surface of the pressing strip 504. More specifically, by operating the electric push rod 501, its telescopic end is driven to move downward, thereby driving the connecting rod 503 to slide along the surface of the fixed seat 502, and then driving the pressing strip 504 to descend, so that the rubber pad touches the surface of the plate, and the plate can be clamped and fixed in cooperation with the supporting plate 402.

[0042] The commutation assembly 6 includes a support disk 601. A second motor 602 is fixedly installed on the back surface of the support disk 601. The output end of the second motor 602 is fixedly connected with a third rotating shaft 603, and the third rotating shaft 603 is rotatably connected with the support disk 601. The front end of the third rotating shaft 603 is fixedly connected with a connecting frame 604, and the front surface of the connecting frame 604 is fixedly connected with the rear end of the end plate 401. It should be noted that by operating the second motor 602, the third rotating shaft 603 is driven to rotate, so as to drive the connecting frame 604 to rotate, thereby driving the receiving assembly 4 to rotate, so that the receiving assembly 4 can rotate from above the left conveying mechanism 3 to above the right conveying mechanism 3, and the plate is turned over.

[0043] The commutation assembly 6 further includes a limiting rod 605, and the limiting rod 605 is fixedly connected with the third rotating shaft 603. The bottom end of the limiting rod 605 is rotatably connected with a ball 606. An annular groove 607 is formed in the top surface of the support disk 601, and the inner wall of the annular groove 607 is rotatably connected with the surface of the ball 606. More specifically, during the rotation of the connecting frame 604, the limiting rod 605 is driven to rotate, and then the ball 606 is driven to roll along the inner wall of the annular groove 607. The limiting rod 605 and the ball 606 are used for support, thereby improving the stability during the rotation of the connecting frame 604.

[0044] The lifting control assembly 8 includes a fourth motor 801, and the fourth motor 801 is fixedly installed at the bottom of the inner wall of the control box 7. The output end of the fourth motor 801 is fixedly connected with a threaded rod 802, and the top end of the threaded rod 802 is rotatably connected with the inner wall of the control box 7. The surface of the threaded rod 802 is threadedly connected with a U-shaped frame 803, and the U-shaped frame 803 is movably inserted into the top of the control box 7, and the top end of the U-shaped frame 803 is fixedly connected with the bottom surface of the support disk 601. It should be noted that by driving the threaded rod 802 to rotate by the fourth motor 801, the U-shaped frame 803 can be controlled to move in the vertical direction under the action of the thread on its surface, thereby pushing the commutation assembly 6 and the receiving assembly 4 to move in the vertical direction.

[0045] The alignment component 9 includes a fifth motor 901, and the fifth motor 901 is fixedly installed on the front surface of the mounting frame 10. The output end of the fifth motor 901 is fixedly connected to a double-headed screw 902. Two support rods 904 are threadedly connected to the surface of the double-headed screw 902. The end of the support rod 904 is fixedly connected to a side plate 905. A sliding column 903 is fixedly connected to the inner wall of the mounting frame 10, and the surface of the sliding column 903 is slidably connected to the support rod 904. More specifically, when the sheet is conveyed to the surface of the right conveyor belt 304, the fifth motor 901 drives the double-headed screw 902 to rotate. Under the action of the thread on its surface, the support rod 904 can be driven to slide along the surface of the sliding column 903, thereby driving the two side plates 905 to approach each other. By using the side plates 905 to contact the front and rear sides of the sheet, the sheet is aligned, so that the sheet and the conveyor belt 304 are in the correct relative position, facilitating subsequent printing.

[0046] In summary: The present invention is used in cooperation with a printing machine. The sheet after one-sided printing is conveyed to the right by the conveying mechanism 3 on the left. The receiving component 4 can detect whether the right end of the sheet reaches the predetermined position. After reaching the predetermined position, the conveying mechanism 3 pauses. The lifting control component 8 controls the reversing component 6 and the receiving component 4 to rise to lift the sheet, so that the sheet is separated from the surface of the left conveying mechanism 3. Subsequently, the pressing component 5 operates to clamp and fix the sheet. Then, the reversing component 6 operates to flip the receiving component 4, so that the other side of the sheet faces upward and the receiving component 4 reaches above the right conveying mechanism 3. Subsequently, the pressing component 5 releases the limit on the sheet, and the lifting control component 8 controls the reversing component 6 and the receiving component 4 to descend. Finally, the sheet falls on the top surface of the right conveying mechanism 3. Then, the alignment component 9 operates to align the sheet. Subsequently, the right conveying mechanism 3 operates to drive the flipped sheet to move, and in cooperation with the printing machine, the other side can be printed. The present invention realizes the effect of facilitating the automatic flipping of the sheet during use, thereby facilitating double-sided printing. During the flipping process, the sheet can be effectively limited, avoiding the situation of slipping during the flipping process, making the flipping process more stable, and achieving the effect of safety protection.

[0047] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic turning machine with safety protection, characterized in that: The invention comprises a frame (1), the bottom surface of the frame (1) is fixedly connected to a base frame (2), the inner left and right sides of the frame (1) are symmetrically provided with conveying mechanisms (3) for transferring plates, a receiving assembly (4) for transferring plates and turning them over is provided between two sets of the conveying mechanisms (3), the top surface of the receiving assembly (4) is installed with a pressing assembly (5) for limiting the position of the plates, a reversing assembly (6) for controlling the rotation of the receiving assembly (4) in a vertical plane is provided below the receiving assembly (4), a control box (7) is fixedly connected to the middle of the base frame (2), the surface of the control box (7) is installed with a lifting control assembly (8) for controlling the vertical movement of the reversing assembly (6), a mounting frame (10) is fixedly connected to the right side of the top surface of the frame (1), and the surface of the mounting frame (10) is installed with a straightening assembly (9) for adjusting the position of the plates.

2. The automatic turning machine with safety protection according to claim 1, characterized in that: The conveying mechanism (3) comprises a first motor (301), and the first motor (301) is fixedly mounted on the front side of the frame (1); the output end of the first motor (301) is fixedly connected to a first rotating shaft (302), and the end of the first rotating shaft (302) is rotatably connected to the inner wall of the frame (1); a plurality of driving wheels (303) are fixedly sleeved on the surface of the first rotating shaft (302), and a conveyor belt (304) is meshed on the surface of the driving wheel (303); and a tensioning assembly for supporting the conveyor belt (304) is mounted on the inner wall of the frame (1).

3. The automatic turning machine with safety protection according to claim 2, characterized in that: The tensioning assembly comprises a fixed frame (305), and the fixed frame (305) is fixedly connected to the inner wall of the frame (1), the end of the fixed frame (305) is rotatably connected to a second rotating shaft (306), a tensioning wheel (307) is fixedly sleeved on the surface of the second rotating shaft (306), and the tensioning wheel (307) is engaged with the conveyor belt (304).

4. The automatic turning machine with safety protection according to claim 2, characterized in that: The receiving assembly (4) comprises an end plate (401), a plurality of supporting plates (402) are fixedly connected to the left side of the end plate (401), and the supporting plates (402) and the conveyor belt (304) are arranged in a staggered manner, a bracket (403) is fixedly connected to the top surface of the end plate (401), and a transmitting end (404) and a receiving end (405) of a beam sensor are fixedly installed at the end of the bracket (403), and the transmitting end (404) and the receiving end (405) of the beam sensor are arranged in an upper and lower alignment, and the height of the receiving end (405) of the beam sensor is lower than the supporting plate (402).

5. The automatic turning machine with safety protection according to claim 4, characterized in that: The clamping assembly (5) comprises an electric push rod (501), and the electric push rod (501) is fixedly mounted on the bottom surface of the supporting plate (402), the telescopic end of the electric push rod (501) is fixedly connected to a connecting rod (503), the top surface of the supporting plate (402) is fixedly connected to a fixing seat (502), and the connecting rod (503) is slidably connected to the fixing seat (502), the left end of the connecting rod (503) is fixedly connected to a pressure strip (504), and the bottom surface of the pressure strip (504) is fixedly connected to a rubber pad.

6. The automatic turning machine with safety protection according to claim 4, characterized in that: The reversing assembly (6) comprises a support plate (601), a second motor (602) is fixedly mounted on the back of the support plate (601), an output end of the second motor (602) is fixedly connected to a third rotating shaft (603), and the third rotating shaft (603) is rotatably connected to the support plate (601), a front end of the third rotating shaft (603) is fixedly connected to a connecting frame (604), and a front end of the connecting frame (604) is fixedly connected to the rear end of the end plate (401).

7. The automatic turning machine with safety protection according to claim 6, characterized in that: The reversing assembly (6) further comprises a limiting rod (605), and the limiting rod (605) is fixedly connected to the third rotating shaft (603), the bottom end of the limiting rod (605) is rotatably connected to a ball (606), the top surface of the support plate (601) is provided with an annular groove (607), and the inner wall of the annular groove (607) is rotatably connected to the surface of the ball (606).

8. The automatic turning machine with safety protection according to claim 6, characterized in that: The lifting control assembly (8) comprises a fourth motor (801), and the fourth motor (801) is fixedly mounted on the bottom of the inner wall of the control box (7); the output end of the fourth motor (801) is fixedly connected to a threaded rod (802), and the top end of the threaded rod (802) is rotatably connected to the inner wall of the control box (7); the surface of the threaded rod (802) is threadedly connected to a U-shaped frame (803), and the U-shaped frame (803) is movably plugged into the top of the control box (7), and the top end of the U-shaped frame (803) is fixedly connected to the bottom surface of the support plate (601).

9. The automatic turning machine with safety protection according to claim 4, characterized in that: The alignment assembly (9) comprises a fifth motor (901), and the fifth motor (901) is fixedly mounted on the front side of the mounting frame (10); the output end of the fifth motor (901) is fixedly connected to a double-headed screw (902); the surface of the double-headed screw (902) is threadedly connected to two support rods (904); the ends of the support rods (904) are fixedly connected to side plates (905); the inner wall of the mounting frame (10) is fixedly connected to a sliding column (903), and the surface of the sliding column (903) is slidably connected to the support rod (904).

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