A hydraulic system for punching equipment

Abstract

The present application relates to a hydraulic system for punching equipment, and relates to the field of punching processing technology, which includes a frame and a conveyor belt, a processing table is fixedly connected to the frame, the conveyor belt passes through the processing table, a sliding hole is passed through the processing table, a support seat is set in the sliding hole for lifting, and a through hole is passed through the support seat for waste to flow out; and: a lifting drive mechanism for driving the support seat to move up; a positioning clamping mechanism for clamping and fixing the workpiece on the top of the support seat; a pressure sensing module for sensing the positioning clamping mechanism and outputting a first control signal; a servo hydraulic cylinder for receiving the first control signal and driving the punch to move down; a waste sensing module for sensing the waste flowing out through the through hole and outputting a second control signal; and the servo hydraulic cylinder receives the second control signal and responds. The present application can save the assembly cost of the punching equipment and achieve the technical effect of automatic and continuous punching.

Description

Technical Field

[0001] The present application relates to the field of punching processing technology, and in particular to a hydraulic system for punching equipment. Background Art

[0002] Processing holes in plates is a common process in mechanical processing. Punching equipment is generally used to complete the punching process, using a hard punching head to penetrate the plate to process holes.

[0003] In the prior art, common punching equipment mainly includes a frame, a loading platform is arranged on the frame, a positioning and clamping mechanism for fixing the object to be punched is arranged on the loading platform, and a gas-liquid pressurization system is fixedly installed on the frame. The gas-liquid pressurization system is mainly composed of a cylinder, a hydraulic cylinder, a hydraulic station, an oil pipeline, an oil pump and other structures. Its main punching punch is installed at the end of the plunger rod of the hydraulic cylinder. The cylinder is used as a power source to provide pressure to the hydraulic station of the hydraulic cylinder through air, so as to increase the oil pressure to push the plunger, and drive the punch to reciprocate and rise and fall to perform the punching operation.

[0004] However, the punching operation performed by the gas-liquid booster pump has low accuracy, and the gas-liquid booster system often needs to be used in conjunction with an air compressor, which is costly. In addition, during the punching process, the operator needs to manually control the start or stop of the gas-liquid booster system to control the punching operation. The operation process is relatively cumbersome and there is room for improvement. Summary of the invention

[0005] In order to save the assembly cost of punching equipment and achieve the technical effect of automatic and continuous punching, the present application provides a hydraulic system for punching equipment.

[0006] The hydraulic system for punching equipment provided in this application adopts the following technical solution:

[0007] A hydraulic system for punching equipment, comprising a frame and a conveyor belt, wherein a processing table is fixedly connected to the frame, the conveyor belt passes through the processing table, a sliding hole is opened through the processing table, a support seat is lifted and lowered in the sliding hole, and a through hole is opened through the support seat for waste to flow out; and:

[0008] A lifting drive mechanism, fixedly mounted on the frame, with a driving end fixedly connected to the bottom of the support seat, for driving the support seat to move upward;

[0009] A positioning clamping mechanism, fixedly mounted on the processing table, for clamping and fixing the workpiece on the top of the support seat;

[0010] A pressure sensing module, arranged on the positioning and clamping mechanism, for sensing the clamping pressure of the positioning and clamping mechanism on the workpiece, and outputting a first control signal when the clamping pressure reaches a set value;

[0011] A servo hydraulic cylinder, the cylinder body of which is fixedly mounted on the frame and located above the processing table, a punch is mounted on the driving end, and is signal-connected to the signal output end of the pressure sensing module, for receiving the first control signal and driving the punch to move downward;

[0012] A waste material sensing module, disposed in the support seat, for sensing waste material flowing out through the through hole and outputting a second control signal;

[0013] The signal input end of the servo hydraulic cylinder is connected to the signal output end of the waste sensor, and the servo hydraulic cylinder receives the second control signal and responds.

[0014] By adopting the above technical scheme, in the actual production and processing process, the workpiece can be transported to the bottom of the processing table through the conveyor belt at a set frequency, and the workpiece to be processed can be stopped under the punch, so as to achieve the technical effect of continuously transporting the workpiece; the lifting drive mechanism lifts the support seat to lift the workpiece from the surface of the conveyor belt, and the positioning clamping mechanism clamps and fixes the workpiece on the surface of the support seat; in the process of the positioning clamping mechanism clamping the workpiece, the pressure sensing module senses the clamping pressure on the workpiece and controls the servo hydraulic cylinder to start when the clamping pressure reaches the required clamping pressure value, and after the servo hydraulic cylinder is started, the punch is driven downward to punch the workpiece; after the punching is completed, the waste flows out through the through hole on the support seat, the waste sensing module senses the waste and controls the servo hydraulic cylinder to retract the drive shaft, so as to realize automatic and continuous control of the servo hydraulic cylinder to perform automatic punching and automatic recovery, which can avoid the operator manually controlling the punching equipment to perform the punching process, and effectively improve the processing efficiency of the punching equipment. Among them, the method of supplying pressure through the servo hydraulic cylinder is compared with the method of supplying pressure through the air-liquid booster pump. The servo hydraulic cylinder mainly drives the oil pump through the servo motor to output the corresponding amount of oil to the hydraulic cylinder and hydraulic motor. The hydraulic cylinder can be driven by the servo motor without the use of an air compressor. At the same time, the servo motor can be directly used in conjunction with the pressure sensing module and the waste sensing module to achieve the technical effect of automatically driving the punch up and down.

[0015] Preferably, a first mounting plate is fixedly connected to the frame, the first mounting plate is located below the processing table, and a waste outlet for waste flow is provided on the first mounting plate;

[0016] The lifting drive mechanism includes two supporting hydraulic cylinders, the driving shafts of the two hydraulic cylinders are fixedly connected to the bottom of the supporting seat, and the two supporting hydraulic cylinders drive the supporting seat to slide in the through hole.

[0017] By adopting the above technical solution, the two supporting hydraulic cylinders extend the driving shafts to drive the supporting seat to move up and lift the workpiece. After processing, the two supporting hydraulic cylinders retract the driving shafts to place the workpiece back on the conveyor belt to facilitate the conveyor belt to complete the transportation.

[0018] Preferably, the positioning and clamping mechanism comprises two corner cylinders, the cylinder bodies of the two corner cylinders are respectively located on both sides of the conveyor belt, the pressure plates of the two corner cylinders are pressed against the upper surface of the workpiece, and the workpiece is pressed between the pressure plate and the support seat.

[0019] By adopting the above technical solution, the angle cylinder drives the pressure plate to rotate and press down until the pressure plate and the upper surface of the workpiece are tightly pressed, so that the workpiece can be tightly clamped between the support seat and the pressure plate, achieving the technical effect of automatically clamping and positioning the workpiece, and preventing the workpiece from being displaced during the punching process.

[0020] Preferably, the pressure sensing module comprises two thin film pressure sensors, which are respectively fixedly mounted on the bottom of the pressing plate, and the two thin film pressure sensors sense the sensing pressure between the pressing plate and the surface of the workpiece and respectively output clamping pressure signals;

[0021] The signal output ends of the two film pressure sensors are connected to a single chip microcomputer, which receives the two clamping pressure signals and outputs the first control signal when both clamping pressure values ​​are greater than a set pressure value.

[0022] By adopting the above technical solution, when the pressure plate is pressed down to clamp the workpiece, the film pressure sensor detects the clamping pressure between the pressure plate and the workpiece surface in real time. When the clamping pressure on both sides of the workpiece is greater than the set pressure value, the single-chip microcomputer can determine that the workpiece has completed positioning, and control the servo hydraulic cylinder to extend the drive shaft to drive the punch down and perform the punching operation.

[0023] Preferably, the waste sensing module comprises an infrared radiation sensor, the infrared radiation sensor comprises a transmitting end and a receiving end, two opposite mounting grooves are formed on the inner side wall of the support seat, and the transmitting end and the receiving end are respectively embedded and installed in the two mounting grooves;

[0024] The receiving end senses the fallen waste and outputs the second control signal.

[0025] By adopting the above technical solution, when the workpiece completes the punching process and the waste formed by the punching falls through the through hole on the support seat, the waste is blocked between the transmitting end and the receiving end, and the infrared rays emitted by the transmitting end cannot be received by the receiving end. The receiving end outputs a second control signal, and the servo hydraulic cylinder drives the punch to rise after receiving the second control signal.

[0026] Preferably, a connecting plate is fixedly connected to the driving shaft end of the servo hydraulic cylinder, and a connecting seat for mounting the punch is fixedly connected to the bottom of the connecting plate;

[0027] Two groups of guide rods are fixedly connected to the processing table, and the two groups of guide rods are respectively located on both sides of the conveyor belt. Both ends of the connecting plate are respectively provided with a plurality of insertion holes for the guide rods to pass through, and the ends of the guide rods passing through the insertion holes are fixedly connected with anti-slip blocks;

[0028] The guide rods are coaxially sleeved with springs, and both ends of the springs are fixedly connected to the connecting plate and the processing table respectively.

[0029] By adopting the above technical solution, the spring on the guide rod is pressed tightly between the connecting plate and the workbench, which can improve the stability of the servo hydraulic cylinder driving the connecting plate to move downward and ensure the stability of the punch punching; when the punching is completed, the elastic force formed by the spring on the connecting plate can assist the connecting plate to quickly recover.

[0030] Preferably, a second mounting plate is fixedly mounted on the frame, a waste collection box is placed on the second mounting plate, and the first mounting plate is mounted above the waste collection box.

[0031] By adopting the above technical solution, the waste collection box on the second mounting plate can collect fallen waste, thereby improving the convenience for operators to clean the processing site.

[0032] In summary, the hydraulic system for punching equipment of the present application includes at least one of the following beneficial technical effects:

[0033] 1. The workpiece is conveyed to the bottom of the processing table by the conveyor belt at a set frequency, and the workpiece to be processed is stopped under the punch; the lifting drive mechanism lifts the support seat to lift the workpiece from the surface of the conveyor belt, and the positioning clamping mechanism clamps and fixes the workpiece on the surface of the support seat; in the process of the positioning clamping mechanism clamping the workpiece, the pressure sensing module senses the clamping pressure on the workpiece and controls the servo hydraulic cylinder to start when the clamping pressure reaches the required clamping pressure value, and the servo hydraulic cylinder is started to drive the punch downward to punch the workpiece; after the punching is completed, the waste flows out through the through hole on the support seat, and the waste sensing module senses the waste and controls the servo hydraulic cylinder to retract and drive The movable axis can realize the technical effects of automatically sensing the workpiece, automatically punching, and automatically restoring the punch, which can avoid the operator manually controlling the punching equipment to perform the punching process, and effectively improve the processing efficiency of the punching equipment; among them, the method of supplying pressure through the servo hydraulic cylinder is compared with the method of supplying pressure through the gas-liquid booster pump. The servo hydraulic cylinder mainly drives the oil pump to output the corresponding amount of oil to the hydraulic cylinder and the hydraulic motor through the servo motor. The hydraulic cylinder can be driven by the servo motor without the use of an air compressor. At the same time, the servo motor can be directly used in combination with the pressure sensing module and the waste sensing module to achieve the technical effect of automatically driving the punch up and down;

[0034] 2. The spring on the guide rod is pressed tightly between the connecting plate and the workbench, which can improve the stability of the downward movement of the connecting plate driven by the servo hydraulic cylinder and ensure the stability of the punch punching; when the punching is completed, the elastic force formed by the spring on the connecting plate can assist the connecting plate to quickly rise. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of an embodiment of the present application for demonstrating the overall structure of the punching equipment.

[0036] Figure 2 It is a schematic diagram of an embodiment of the present application for demonstrating the internal signal transmission of a punching device.

[0037] Explanation of the reference numerals in the accompanying drawings: 1. Frame; 11. Processing table; 12. Slide hole; 13. Support seat; 131. Mounting groove; 14. Through hole; 15. First mounting plate; 151. Waste outlet; 16. Connecting plate; 161. Connecting seat; 17. Guide rod; 171. Spring; 18. Second mounting plate; 19. Waste collection box; 2. Conveyor belt; 3. Lifting drive mechanism; 31. Support hydraulic cylinder; 4. Positioning clamping mechanism; 41. Corner cylinder; 42. Press plate; 5. Pressure sensing module; 51. Thin film pressure sensor; 6. Servo hydraulic cylinder; 7. Infrared counter-radiation sensor; 71. Transmitter; 72. Receiving end. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-2 This application is described in further detail. Example

[0039] The present application embodiment discloses a hydraulic system for punching equipment. Figure 1 , including a frame 1 and a conveyor belt 2, a processing table 11 is fixedly connected to the frame 1, the conveyor belt 2 passes through the processing table 11, a sliding hole 12 is penetrated on the processing table 11, a support seat 13 is lifted and lowered in the sliding hole 12, and a through hole 14 is penetrated on the support seat 13 for waste to flow out.

[0040] And: a lifting drive mechanism 3, which is fixedly mounted on the frame 1, and a driving end is fixedly connected to the bottom of the support seat 13, and is used to drive the support seat 13 to move upward; a positioning clamping mechanism 4, which is fixedly mounted on the processing table 11, and is used to clamp the workpiece on the top of the support seat 13; a pressure sensing module 5, which is arranged on the positioning clamping mechanism 4, and is used to sense the clamping pressure of the positioning clamping mechanism 4 on the workpiece, and output a first control signal when the clamping pressure reaches a set value; a servo hydraulic cylinder 6, whose cylinder body is fixedly mounted on the frame 1, and is located above the processing table 11, and a punch is installed on the driving end, and is connected to the signal output end of the pressure sensing module 5, and is used to receive the first control signal and drive the punch to move downward; a waste sensing module, which is arranged in the support seat 13, and is used to sense the waste flowing out through the through hole 14 and output a second control signal; the signal input end of the servo hydraulic cylinder 6 is connected to the signal output end of the waste sensing, and the servo hydraulic cylinder 6 receives the second control signal and responds.

[0041] The conveyor belt 2 transports the workpiece to the bottom of the processing table 11 at a set frequency, and makes the workpiece to be processed stay under the punch, so as to achieve the technical effect of continuously conveying the workpiece; the lifting drive mechanism 3 lifts the support seat 13 to lift the workpiece from the surface of the conveyor belt 2, and at the same time the positioning clamping mechanism 4 clamps the workpiece on the surface of the support seat 13.

[0042] When the positioning clamping mechanism 4 clamps the workpiece, the pressure sensing module 5 senses the clamping pressure on the workpiece and controls the servo hydraulic cylinder 6 to start when the clamping pressure reaches the required clamping pressure value. After the servo hydraulic cylinder 6 is started, the punch is driven downward to perform punching processing on the workpiece.

[0043] After punching is completed, the waste flows out through the through hole 14 on the support seat 13, and the waste sensing module senses the waste and controls the servo hydraulic cylinder 6 to retract the driving shaft, so as to realize automatic and continuous control of the servo hydraulic cylinder 6 to perform automatic punching and automatic recovery, thereby eliminating the need for the operator to manually control the punching equipment to perform the punching process, and effectively improving the processing efficiency of the punching equipment.

[0044] Among them, the method of supplying pressure through the servo hydraulic cylinder 6 is compared with the method of supplying pressure through the air-liquid booster pump. The servo hydraulic cylinder 6 mainly drives the oil pump to output the corresponding amount of oil to the hydraulic cylinder and the hydraulic motor through the servo motor. The hydraulic cylinder can be driven by the servo motor without the use of an air compressor. At the same time, the servo motor can be directly used in combination with the pressure sensing module 5 and the waste sensing module to achieve the technical effect of automatically driving the punch up and down.

[0045] Reference Figure 1 A first mounting plate 15 is fixedly connected to the frame 1, the first mounting plate 15 is located below the processing table 11, and a waste outlet 151 for waste flow is opened on the first mounting plate 15; the jacking drive mechanism 3 includes two supporting hydraulic cylinders 31, the driving shafts of the two hydraulic cylinders are fixedly connected to the bottom of the support seat 13, and the two supporting hydraulic cylinders 31 drive the support seat 13 to slide in the through hole 14.

[0046] The two supporting hydraulic cylinders 31 extend the driving shafts to drive the supporting seat 13 to move up and lift the workpiece. After processing, the two supporting hydraulic cylinders 31 retract the driving shafts to place the workpiece back on the conveyor belt 2 so that the conveyor belt 2 can complete the transportation.

[0047] Reference Figure 1 The positioning and clamping mechanism 4 includes two corner cylinders 41 , the cylinder bodies of the two corner cylinders 41 are respectively located on both sides of the conveyor belt 2 , and the pressure plates 42 of the two corner cylinders 41 are pressed tightly against the upper surface of the workpiece, and the workpiece is pressed tightly between the pressure plate 42 and the support seat 13 .

[0048] The corner cylinder 41 drives the pressing plate 42 to rotate and press down until the pressing plate 42 is tightly pressed against the upper surface of the workpiece, so that the workpiece can be tightly clamped between the support seat 13 and the pressing plate 42, achieving the technical effect of automatically clamping and positioning the workpiece, and preventing the workpiece from being displaced during the punching process.

[0049] In the embodiments of this application, refer to Figure 1 and Figure 2 The pressure sensing module 5 includes two thin film pressure sensors 51, which are fixedly mounted on the bottom of the pressing plate 42 respectively. The two thin film pressure sensors 51 sense the sensing pressure between the pressing plate 42 and the surface of the workpiece and output clamping pressure signals respectively.

[0050] The signal output ends of the two film pressure sensors 51 are connected to a single chip microcomputer, which receives two clamping pressure signals and outputs a first control signal when both clamping pressure values ​​are greater than a set pressure value.

[0051] When the pressure plate 42 is pressed down to clamp the workpiece, the film pressure sensor 51 detects the clamping pressure between the pressure plate 42 and the workpiece surface in real time. When the clamping pressure on both sides of the workpiece is greater than the set pressure value, the single chip microcomputer can determine that the workpiece has completed positioning, and control the servo hydraulic cylinder 6 to extend the drive shaft to drive the punch to move down and perform the punching operation.

[0052] Reference Figure 1 and Figure 2 The waste sensing module adopts an infrared radiation sensor 7, which includes a transmitting end 71 and a receiving end 72. Two opposite mounting grooves are opened on the inner wall of the support base, and the transmitting end 71 and the receiving end 72 are respectively embedded and installed in the two mounting grooves; the receiving end 72 senses the fallen waste and outputs a second control signal.

[0053] When the workpiece completes the punching process and the waste formed by the punching falls through the through hole 14 on the support seat 13, the waste is blocked between the transmitting end 71 and the receiving end 72. The infrared rays emitted by the transmitting end 71 cannot be received by the receiving end 72. The receiving end 72 outputs a second control signal, and the servo hydraulic cylinder 6 drives the punch to rise after receiving the second control signal.

[0054] Reference Figure 1 The driving shaft end of the servo hydraulic cylinder 6 is fixedly connected with a connecting plate 16, and the bottom of the connecting plate 16 is fixedly connected with a connecting seat 161 for installing a punch; two groups of guide rods 17 are fixedly connected to the processing table 11, and the two groups of guide rods 17 are respectively located on both sides of the conveyor belt 2. Both ends of the connecting plate 16 are respectively provided with a plurality of plug holes for the guide rods 17 to pass through, and the ends of the guide rods 17 passing through the plug holes are fixedly connected with anti-slip blocks; springs 171 are coaxially sleeved on the guide rods 17, and the two ends of the spring 171 are respectively fixedly connected to the connecting plate 16 and the processing table 11.

[0055] The spring 171 on the guide rod 17 is pressed tightly between the connecting plate 16 and the workbench, which can improve the stability of the servo hydraulic cylinder 6 driving the connecting plate 16 to move downward, and ensure the stability of the punch punching; when the punching is completed, the elastic force formed by the spring 171 on the connecting plate 16 can assist the connecting plate 16 to quickly rise.

[0056] Reference Figure 1 A second mounting plate 18 is fixedly mounted on the frame 1, a waste collection box 19 is placed on the second mounting plate 18, and the first mounting plate 15 is mounted above the waste collection box 19. The waste collection box 19 on the second mounting plate 18 can collect fallen waste, thereby improving the convenience of operators cleaning the processing site.

[0057] The implementation principle of the hydraulic system for punching equipment in the embodiment of the present application is as follows: the conveyor belt 2 conveys the workpiece to the bottom of the processing table 11 at a set frequency, and the workpiece to be processed stays under the punch, so as to achieve the technical effect of continuously conveying the workpiece; the lifting drive mechanism 3 lifts the support seat 13 so that the workpiece is lifted from the surface of the conveyor belt 2, and the positioning clamping mechanism 4 clamps and fixes the workpiece on the surface of the support seat 13. In the process of the positioning clamping mechanism 4 clamping the workpiece, the pressure sensing module 5 senses the clamping pressure on the workpiece and controls the servo hydraulic cylinder 6 to start when the clamping pressure reaches the required clamping pressure value. After the servo hydraulic cylinder 6 is started, the punch is driven downward to perform punching processing on the workpiece. After the punching is completed, the waste flows out through the through hole 14 on the support seat 13, and the waste sensing module senses the waste and controls the servo hydraulic cylinder 6 to retract the driving shaft, so as to achieve the automatic and continuous control of the servo hydraulic cylinder 6 to perform automatic punching and automatic recovery, which can avoid the operator manually controlling the punching equipment to perform the punching processing and effectively improve the processing efficiency of the punching equipment. Among them, the method of supplying pressure through the servo hydraulic cylinder 6 is compared with the method of supplying pressure through the air-liquid booster pump. The servo hydraulic cylinder 6 mainly drives the oil pump to output the corresponding amount of oil to the hydraulic cylinder and the hydraulic motor through the servo motor. The hydraulic cylinder can be driven by the servo motor without the use of an air compressor. At the same time, the servo motor can be directly used in combination with the pressure sensing module 5 and the waste sensing module to achieve the technical effect of automatically driving the punch up and down.

[0058] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A hydraulic system for punching equipment, characterized in that: The machine comprises a frame (1) and a conveyor belt (2), wherein a processing table (11) is fixedly connected to the frame (1), the conveyor belt (2) passes through the processing table (11), a sliding hole (12) is formed through the processing table (11), a support seat (13) is provided in the sliding hole (12) for lifting, and a through hole (14) is formed through the support seat (13) for waste to flow out; and: A lifting drive mechanism (3) is fixedly mounted on the frame (1), with a driving end fixedly connected to the bottom of the support seat (13) and used for driving the support seat (13) to move upward; A positioning clamping mechanism (4) fixedly mounted on the processing table (11) and used for clamping and fixing the workpiece on the top of the support seat (13); A pressure sensing module (5) is arranged on the positioning and clamping mechanism (4), and is used to sense the clamping pressure of the positioning and clamping mechanism (4) on the workpiece, and output a first control signal when the clamping pressure reaches a set value; A servo hydraulic cylinder (6), the cylinder body of which is fixedly mounted on the frame (1) and is located above the processing table (11); a punch is mounted on the driving end thereof and is signal-connected to the signal output end of the pressure sensing module (5) for receiving the first control signal and driving the punch to move downward; A waste material sensing module, arranged in the support seat (13), used for sensing waste material flowing out through the through hole (14) and outputting a second control signal; The signal input end of the servo hydraulic cylinder (6) is signal-connected to the signal output end of the waste sensor, and the servo hydraulic cylinder (6) receives the second control signal and responds.

2. A hydraulic system for punching equipment according to claim 1, characterized in that: A first mounting plate (15) is fixedly connected to the frame (1), the first mounting plate (15) is located below the processing table (11), and a waste outlet (151) for waste flow is provided on the first mounting plate (15); The lifting drive mechanism (3) comprises two supporting hydraulic cylinders (31), the driving shafts of the two hydraulic cylinders being fixedly connected to the bottom of the supporting seat (13), and the two supporting hydraulic cylinders (31) driving the supporting seat (13) to slide in the through hole (14).

3. A hydraulic system for punching equipment according to claim 2, characterized in that: The positioning and clamping mechanism (4) comprises two corner cylinders (41), the cylinder bodies of the two corner cylinders (41) are respectively located on both sides of the conveyor belt (2), the pressure plates (42) of the two corner cylinders (41) are pressed against the upper surface of the workpiece, and the workpiece is pressed between the pressure plates (42) and the support seat (13).

4. A hydraulic system for punching equipment according to claim 3, characterized in that: The pressure sensing module (5) comprises two thin film pressure sensors (51), the two thin film pressure sensors (51) are respectively fixedly mounted on the bottom of the pressing plate (42), and the two thin film pressure sensors (51) sense the pressure between the pressing plate (42) and the surface of the workpiece and respectively output clamping pressure signals; The signal output ends of the two film pressure sensors (51) are connected to a single chip microcomputer, which receives the two clamping pressure signals and outputs the first control signal when both clamping pressure values ​​are greater than a set pressure value.

5. A hydraulic system for punching equipment according to claim 4, characterized in that: The waste sensing module comprises an infrared radiation sensor (7), the infrared radiation sensor (7) comprising a transmitting end (71) and a receiving end (72), two opposite mounting grooves are provided on the inner side wall of the support seat (13), the transmitting end (71) and the receiving end (72) are respectively embedded and installed in the two mounting grooves; The receiving end (72) senses the fallen waste and outputs the second control signal.

6. A hydraulic system for punching equipment according to claim 5, characterized in that: A connecting plate (16) is fixedly connected to the driving shaft end of the servo hydraulic cylinder (6), and a connecting seat (161) for mounting the punch is fixedly connected to the bottom of the connecting plate (16); Two groups of guide rods (17) are fixedly connected to the processing table (11), and the two groups of guide rods (17) are respectively located on both sides of the conveyor belt (2); both ends of the connecting plate (16) are respectively provided with a plurality of insertion holes for the guide rods (17) to pass through, and the ends of the guide rods (17) passing through the insertion holes are fixedly connected with anti-slip blocks; The guide rods (17) are coaxially sleeved with springs (171), and the two ends of the springs (171) are respectively fixedly connected to the connecting plate (16) and the processing table (11).

7. A hydraulic system for punching equipment according to claim 6, characterized in that: A second mounting plate (18) is fixedly mounted on the frame (1), a waste collection box (19) is placed on the second mounting plate (18), and the first mounting plate (15) is mounted above the waste collection box (19).

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