Hydraulic regulation and control system for cutting protection of single board computer

Abstract

The utility model relates to the technical field of hydraulic control systems, in particular to a hydraulic regulation and control system for cutting protection of a single board computer. Comprising a first oil cylinder, a second oil cylinder, a balance valve, a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, a fourth electromagnetic valve, an electro-hydraulic valve, a first pilot overflow valve, a second pilot overflow valve, a first one-way valve, a second one-way valve, a third one-way valve, a prefill valve, a hydraulic pump P1 interface, a hydraulic pump P2 interface, a pressure detection PG1 port, a pressure detection PG2 port, a pressure detection PG3 port and an oil return T1 port. The hydraulic regulation and control system for cutting protection of the single board computer has the advantages that the rapid descending function can be achieved through self-weight descending, rapid descending is completed by electrifying the electro-hydraulic valve, hydraulic oil is supplemented through the prefill valve, the problem of negative pressure of the oil cylinder is solved, energy loss can be reduced, the cutting speed of equipment can be adjusted through balance valve back pressure, and the working efficiency is improved. And the phenomenon that the blade collides with a cut product to be damaged due to too high speed is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic control systems, in particular to a single-board machine cutting protection hydraulic control system. Background Art

[0002] The single board cutting machine is used for the segmentation and cutting of sheets in various industries. It does not require any molds and is controlled by system software. It can directly cut the products. As long as the corresponding parameters are set on the operating platform, the computer transmits the corresponding instructions to the cutting machine, and the cutting machine quickly cuts according to the accepted design drawings. It has high automation and simple operation. It is a cutting device used in many industries.

[0003] The existing single-board cutting machine has a slow descending and ascending speed, and the semi-automatic efficiency of the robot is too low. If the cutting speed is increased, the blade is easy to hit the cut product and be damaged. The laser blade is not durable during cutting, and the oil discharge during operation is insufficient, which generates back pressure on the motor, causing energy loss and excessive power consumption.

[0004] Therefore, a single-board machine cutting protection hydraulic control system is needed to solve the problems of slow descent and ascent speed of the single-board cutting machine, low semi-automatic efficiency of the configured robot, poor durability of the laser blade during cutting, and excessive power consumption during operation. Utility Model Content

[0005] The purpose of the utility model is to provide a single-board machine cutting protection hydraulic control system to solve the technical problems of slow descending and ascending speeds of existing single-board cutting machines, low semi-automatic efficiency of manipulators, poor durability of laser blades during cutting, and excessive power consumption during operation.

[0006] The utility model provides a single-board machine cutting protection hydraulic control system, including a first oil cylinder, a second oil cylinder, a balance valve, a first solenoid valve, a second solenoid valve, a third solenoid valve, a fourth solenoid valve, an electro-hydraulic valve, a first check valve, a second check valve, a hydraulic pump P1 interface, a hydraulic pump P2 interface, a return oil T1 port, and a return oil T2 port. The first oil cylinder is connected to the balance valve, the third solenoid valve is connected to the first oil cylinder and the balance valve respectively, the hydraulic pump P2 interface is connected to the third solenoid valve, the first check valve is located between the hydraulic pump P2 interface and the third solenoid valve, the second oil cylinder is connected to the third solenoid valve and the balance valve respectively, the first oil cylinder and the second oil cylinder are used to convert the pressure energy of the hydraulic oil into mechanical energy, the electro-hydraulic valve is connected to the second oil cylinder, and the electro-hydraulic valve is controlled by the switch of the hydraulic oil circuit through the electromagnet to realize the control of the hydraulic system. When the electromagnet is energized, it can attract the valve core to realize the function of flow or cutoff in the hydraulic oil circuit; on the contrary, if the electromagnet is powered off, the valve core returns to the initial state and cuts off the hydraulic oil circuit. Due to the flexibility of electromagnet control, the control of parameters such as flow, pressure and direction of the hydraulic system can be achieved by controlling the on and off of the electromagnet. The electro-hydraulic valve is connected to the return oil T1 port, and the return oil T1 port is used for returning oil. The first solenoid valve, the second solenoid valve, and the fourth solenoid valve are respectively connected to the third solenoid valve. The first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve are used for controlling the hydraulic system. The first solenoid valve is connected to the second solenoid valve. The second one-way valve is located between the first solenoid valve and the second solenoid valve. The second one-way valve is used to limit the flow direction of the hydraulic oil. The hydraulic pump P1 interface is connected to the second solenoid valve. The hydraulic pump P1 interface is used to connect to the hydraulic oil pump. The return oil T2 port is respectively connected to the first solenoid valve and the second solenoid valve, and the return oil T2 port is used for returning oil.

[0007] Preferably, a first pilot relief valve is installed on the first solenoid valve, and the first pilot relief valve is used to control the flow and pressure of the hydraulic system. The flow of the hydraulic oil is controlled by adjusting the opening of the valve port to ensure that the flow and pressure of the hydraulic oil in the system are stable within a certain range, thereby ensuring the normal operation of the system.

[0008] Preferably, a second pilot relief valve is installed on the second solenoid valve, and the second pilot relief valve is used to control the flow and pressure of the hydraulic system. The flow of the hydraulic oil is controlled by adjusting the opening of the valve port to ensure that the flow and pressure of the hydraulic oil in the system are stable within a certain range, thereby ensuring the normal operation of the system.

[0009] Preferably, a filling valve is provided in the system, and the filling valve is respectively connected to the second oil cylinder and the fourth solenoid valve. In the hydraulic system, the filling valve can automatically adjust the pressure of the hydraulic oil circuit system, maintain the balanced state of the system, and provide protection when the system pressure is too high or too low, thereby maintaining the stability and balance of the system.

[0010] Preferably, a third one-way valve is provided on the balancing valve, and the third one-way valve is used to limit the direction of the hydraulic oil.

[0011] Preferably, the electro-hydraulic valve is provided with flow regulation.

[0012] Preferably, the filling valve is connected to a 2.5-inch direct-connected oil tank, and the 2.5-inch direct-connected oil tank is used for oil supply.

[0013] Preferably, a pressure detection PG1 port is provided on the hydraulic pump P1 interface, and the pressure detection PG1 port is used to detect the pressure in the system.

[0014] Preferably, a pressure detection port PG2 is provided on the hydraulic pump P2 interface, and the pressure detection port PG2 is used to detect the pressure in the system.

[0015] Preferably, a pressure detection port PG3 is provided at the connection between the third solenoid valve, the first oil cylinder and the second oil cylinder, and the pressure detection port PG3 is used to detect the pressure in the system.

[0016] Through the above scheme, it is known that the utility model is a single-board machine cutting protection hydraulic control system, which can achieve the rapid descent function by utilizing its own weight. The rapid descent is completed by energizing the electro-hydraulic valve. The negative pressure problem of the oil cylinder is solved by replenishing the hydraulic oil through the filling valve, and the energy loss can be reduced. The balance valve back pressure adjusts the cutting speed of the equipment, and the blade will not be damaged by hitting the cut product due to too fast speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of a hydraulic control system for cutting protection of a single-board computer according to the utility model;

[0019] Figure 2 This is a schematic diagram of a balance valve of a single-board machine cutting protection hydraulic control system of the utility model;

[0020] Figure 3This is a schematic diagram of the operation of a hydraulic control system for cutting protection of a single-board computer according to the utility model;

[0021] Description of reference numerals:

[0022] 1. First oil cylinder, 2. Second oil cylinder, 3. Balance valve, 4. First solenoid valve, 5. Second solenoid valve, 6. Third solenoid valve, 7. Fourth solenoid valve, 8. Electro-hydraulic valve, 9. First pilot overflow valve, 10. Second pilot overflow valve, 11. First check valve, 12. Second check valve, 13. Third check valve, 14. Filling valve, 15. Hydraulic pump P1 interface, 16. Hydraulic pump P2 interface, 17. Pressure detection PG1 port, 18. Pressure detection PG2 port, 19. Pressure detection PG3 port, 20. Return oil T1 port, 21. Return oil T2 port. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model. Example 1

[0024] See also Figure 1 — Figure 3A single-board computer cutting protection hydraulic control system shown in the figure includes a first oil cylinder 1, a second oil cylinder 2, a balance valve 3, a first solenoid valve 4, a second solenoid valve 5, a third solenoid valve 6, a fourth solenoid valve 7, an electro-hydraulic valve 8, a first non-return valve 11, a second non-return valve 12, a hydraulic pump P1 interface 15, a hydraulic pump P2 interface 16, a return oil T1 port 20, and a return oil T2 port 21. The first oil cylinder 1 is connected to the balance valve 3, the third solenoid valve 6 is respectively connected to the first oil cylinder 1 and the balance valve 3, the hydraulic pump P2 interface 16 is connected to the third solenoid valve 6, the first non-return valve 11 is located between the hydraulic pump P2 interface 16 and the third solenoid valve 6, the second oil cylinder 2 is respectively connected to the third solenoid valve 6 and the balance valve 3, the first oil cylinder 1 and the second oil cylinder 2 are used to convert the pressure energy of the hydraulic oil into mechanical energy, the electro-hydraulic valve 8 is connected to the second oil cylinder 2, and the electro-hydraulic valve 8 controls the hydraulic system by controlling the switch of the hydraulic oil circuit by an electromagnet. When the electromagnet is energized, it can attract the valve core to realize the function of flow or flow cutoff in the hydraulic oil circuit; conversely, if the electromagnet is de-energized, the valve core returns to the initial state and cuts off the hydraulic oil circuit. Due to the flexibility of electromagnet control, the control of parameters such as flow, pressure and direction of the hydraulic system can be achieved by controlling the on and off of the electromagnet. The electro-hydraulic valve 8 is connected to the return oil T1 port 20, and the return oil T1 port 20 is used for returning oil. The first solenoid valve 4, the second solenoid valve 5, and the fourth solenoid valve 7 are respectively connected to the third solenoid valve 6, and the first solenoid valve 4, the second solenoid valve 5, the third solenoid valve 6, and the fourth solenoid valve 7 are used for controlling the hydraulic system. The first solenoid valve 4 is connected to the second solenoid valve 5, and the second one-way valve 12 is located between the first solenoid valve 4 and the second solenoid valve 5. The second one-way valve 12 is used to limit the flow direction of the hydraulic oil. The hydraulic pump P1 interface 15 is connected to the second solenoid valve 5, and the hydraulic pump P1 interface 15 is used to connect to the hydraulic oil pump. The return oil T2 port 21 is respectively connected to the first solenoid valve 4 and the second solenoid valve 5, and the return oil T2 port 21 is used for returning oil.

[0025] A first pilot relief valve 9 is installed on the first solenoid valve 4. The first pilot relief valve 9 is used to control the flow and pressure of the hydraulic system. The flow of the hydraulic oil is controlled by adjusting the opening of the valve port to ensure that the flow and pressure of the hydraulic oil in the system are stable within a certain range, thereby ensuring the normal operation of the system.

[0026] A second pilot relief valve 10 is installed on the second solenoid valve 5. The second pilot relief valve 10 is used to control the flow and pressure of the hydraulic system. The flow of the hydraulic oil is controlled by adjusting the opening of the valve port to ensure that the flow and pressure of the hydraulic oil in the system are stable within a certain range, thereby ensuring the normal operation of the system.

[0027] A filling valve 14 is provided in the system, and the filling valve 14 is respectively connected to the second oil cylinder 2 and the fourth solenoid valve 7. In the hydraulic system, the filling valve 14 can automatically adjust the pressure of the hydraulic oil circuit system to maintain the balance of the system, and provide protection when the system pressure is too high or too low, thereby maintaining the stability and balance of the system.

[0028] The electro-hydraulic valve 8 is provided with flow regulation.

[0029] The filling valve 14 is connected to a 2.5-inch direct-connected oil tank, which is used for supplying oil.

[0030] In a single-board machine cutting protection hydraulic control system of embodiment 1, when the mold needs to be adjusted downward, the Y2 end of the first solenoid valve 4 and the third solenoid valve 6 are energized to complete the mold adjustment downward; when the mold needs to be adjusted upward, the Y3 end of the first solenoid valve 4 and the third solenoid valve 6 are energized to complete the mold adjustment upward; when fast cutting downward is required, the first solenoid valve 4, the second solenoid valve 5, the Y2 end of the third solenoid valve 6, and the electro-hydraulic valve 8 are energized to complete fast cutting downward; when slow cutting downward is required, the first solenoid valve 4 and the third solenoid valve 6 are energized. The Y2 end is energized to complete slow downward cutting; when pressurization is required, the Y2 ends of the first solenoid valve 4 and the third solenoid valve 6 are energized to complete pressurization; when pressure relief is required, the fourth solenoid valve 7 is energized to complete pressure relief; when slow cutting upward is required, the first solenoid valve 4, the Y3 end of the third solenoid valve 6, and the fourth solenoid valve 7 are energized to complete slow cutting upward; when fast cutting upward is required, the first solenoid valve 4, the second solenoid valve 5, the Y3 end of the third solenoid valve 6, and the fourth solenoid valve 7 are energized to complete fast cutting upward.

[0031] A single board machine cutting protection hydraulic control system is mainly completed by the following:

[0032] 1. The weight of the middle plate of the veneer cutting machine is more than 1 ton. The rapid descent function can be achieved by using the deadweight. The rapid descent is completed by energizing the electro-hydraulic valve 8. The descent speed can be adjusted according to the cutting of different products.

[0033] 2. During rapid descent, negative pressure will be formed in the upper chambers of the first oil cylinder 1 and the second oil cylinder 2, and the oil provided by the oil pump is far from enough to make up for it. At this time, a filling valve 14 is added to the oil circuit for timely replenishment, so that the negative pressure of the first oil cylinder 1 and the second oil cylinder 2 can be resolved;

[0034] 3. When the rapid descent is changed to punching, the rapid descent valve is powered off and closed, and the back pressure of the balance valve 3 is adjusted. The equipment is now turned into a slow cutting state, and the blade will not be damaged by hitting the cut product due to too high speed;

[0035] 4. When the cutting is completed, the third solenoid valve 6 is powered off to complete the mid-position pressure relief. At this time, 2B2 of the control filling valve 14 is powered on to open the filling valve 14;

[0036] 5. When rising, a large amount of oil can pass through the filling valve 14, reducing the oil volume. Insufficient discharge will cause back pressure on the motor and energy loss. The traditional motor can be reduced from 11KW-6P to 7.5KW-6P, saving costs. Example 2

[0037] See also Figure 1 — Figure 3 A single-board computer cutting protection hydraulic control system shown in the figure includes a first oil cylinder 1, a second oil cylinder 2, a balance valve 3, a first solenoid valve 4, a second solenoid valve 5, a third solenoid valve 6, a fourth solenoid valve 7, an electro-hydraulic valve 8, a first non-return valve 11, a second non-return valve 12, a hydraulic pump P1 interface 15, a hydraulic pump P2 interface 16, a return oil T1 port 20, and a return oil T2 port 21. The first oil cylinder 1 is connected to the balance valve 3, the third solenoid valve 6 is respectively connected to the first oil cylinder 1 and the balance valve 3, the hydraulic pump P2 interface 16 is connected to the third solenoid valve 6, the first non-return valve 11 is located between the hydraulic pump P2 interface 16 and the third solenoid valve 6, the second oil cylinder 2 is respectively connected to the third solenoid valve 6 and the balance valve 3, the first oil cylinder 1 and the second oil cylinder 2 are used to convert the pressure energy of the hydraulic oil into mechanical energy, the electro-hydraulic valve 8 is connected to the second oil cylinder 2, and the electro-hydraulic valve 8 controls the hydraulic system by controlling the switch of the hydraulic oil circuit by an electromagnet. When the electromagnet is energized, it can attract the valve core to realize the function of flow or flow cutoff in the hydraulic oil circuit; conversely, if the electromagnet is de-energized, the valve core returns to the initial state and cuts off the hydraulic oil circuit. Due to the flexibility of electromagnet control, the control of parameters such as flow, pressure and direction of the hydraulic system can be achieved by controlling the on and off of the electromagnet. The electro-hydraulic valve 8 is connected to the return oil T1 port 20, and the return oil T1 port 20 is used for returning oil. The first solenoid valve 4, the second solenoid valve 5, and the fourth solenoid valve 7 are respectively connected to the third solenoid valve 6, and the first solenoid valve 4, the second solenoid valve 5, the third solenoid valve 6, and the fourth solenoid valve 7 are used for controlling the hydraulic system. The first solenoid valve 4 is connected to the second solenoid valve 5, and the second one-way valve 12 is located between the first solenoid valve 4 and the second solenoid valve 5. The second one-way valve 12 is used to limit the flow direction of the hydraulic oil. The hydraulic pump P1 interface 15 is connected to the second solenoid valve 5, and the hydraulic pump P1 interface 15 is used to connect to the hydraulic oil pump. The return oil T2 port 21 is respectively connected to the first solenoid valve 4 and the second solenoid valve 5, and the return oil T2 port 21 is used for returning oil.

[0038] A first pilot relief valve 9 is installed on the first solenoid valve 4. The first pilot relief valve 9 is used to control the flow and pressure of the hydraulic system. The flow of the hydraulic oil is controlled by adjusting the opening of the valve port to ensure that the flow and pressure of the hydraulic oil in the system are stable within a certain range, thereby ensuring the normal operation of the system.

[0039] A second pilot relief valve 10 is installed on the second solenoid valve 5. The second pilot relief valve 10 is used to control the flow and pressure of the hydraulic system. The flow of the hydraulic oil is controlled by adjusting the opening of the valve port to ensure that the flow and pressure of the hydraulic oil in the system are stable within a certain range, thereby ensuring the normal operation of the system.

[0040] A filling valve 14 is provided in the system, and the filling valve 14 is respectively connected to the second oil cylinder 2 and the fourth solenoid valve 7. In the hydraulic system, the filling valve 14 can automatically adjust the pressure of the hydraulic oil circuit system to maintain the balance of the system, and provide protection when the system pressure is too high or too low, thereby maintaining the stability and balance of the system.

[0041] The electro-hydraulic valve 8 is provided with flow regulation.

[0042] The filling valve 14 is connected to a 2.5-inch direct-connected oil tank, which is used for supplying oil.

[0043] The difference between Example 2 and Example 1 is that:

[0044] The balance valve 3 is provided with a third one-way valve 13 , and the third one-way valve 13 is used to limit the direction of the hydraulic oil.

[0045] In a single-board machine cutting protection hydraulic control system of embodiment 2, when the mold needs to be adjusted downward, the Y2 end of the first solenoid valve 4 and the third solenoid valve 6 are energized to complete the mold adjustment downward; when the mold needs to be adjusted upward, the Y3 end of the first solenoid valve 4 and the third solenoid valve 6 are energized to complete the mold adjustment upward; when fast cutting downward is required, the first solenoid valve 4, the second solenoid valve 5, the Y2 end of the third solenoid valve 6, and the electro-hydraulic valve 8 are energized to complete fast cutting downward; when slow cutting downward is required, the first solenoid valve 4 and the third solenoid valve 6 are energized. The Y2 end is energized to complete slow downward cutting; when pressurization is required, the Y2 ends of the first solenoid valve 4 and the third solenoid valve 6 are energized to complete pressurization; when pressure relief is required, the fourth solenoid valve 7 is energized to complete pressure relief; when slow cutting upward is required, the first solenoid valve 4, the Y3 end of the third solenoid valve 6, and the fourth solenoid valve 7 are energized to complete slow cutting upward; when fast cutting upward is required, the first solenoid valve 4, the second solenoid valve 5, the Y3 end of the third solenoid valve 6, and the fourth solenoid valve 7 are energized to complete fast cutting upward.

[0046] A single board machine cutting protection hydraulic control system is mainly completed by the following:

[0047] 1. The weight of the middle plate of the veneer cutting machine is more than 1 ton. The rapid descent function can be achieved by using the deadweight. The rapid descent is completed by energizing the electro-hydraulic valve 8. The descent speed can be adjusted according to the cutting of different products.

[0048] 2. During rapid descent, negative pressure will be formed in the upper chambers of the first oil cylinder 1 and the second oil cylinder 2, and the oil provided by the oil pump is far from enough to make up for it. At this time, a filling valve 14 is added to the oil circuit for timely replenishment, so that the negative pressure of the first oil cylinder 1 and the second oil cylinder 2 can be resolved;

[0049] 3. When the rapid descent is changed to punching, the rapid descent valve is powered off and closed, and the back pressure of the balance valve 3 is adjusted. The equipment is now turned into a slow cutting state, and the blade will not be damaged by hitting the cut product due to too high speed;

[0050] 4. When the cutting is completed, the third solenoid valve 6 is powered off to complete the mid-position pressure relief. At this time, 2B2 of the control filling valve 14 is powered on to open the filling valve 14;

[0051] 5. When rising, a large amount of oil can pass through the filling valve 14, reducing the oil volume. Insufficient discharge will cause back pressure on the motor and energy loss. The traditional motor can be reduced from 11KW-6P to 7.5KW-6P, saving costs. Example 3

[0052] See also Figure 1 — Figure 3A single-board computer cutting protection hydraulic control system shown in the figure includes a first oil cylinder 1, a second oil cylinder 2, a balance valve 3, a first solenoid valve 4, a second solenoid valve 5, a third solenoid valve 6, a fourth solenoid valve 7, an electro-hydraulic valve 8, a first non-return valve 11, a second non-return valve 12, a hydraulic pump P1 interface 15, a hydraulic pump P2 interface 16, a return oil T1 port 20, and a return oil T2 port 21. The first oil cylinder 1 is connected to the balance valve 3, the third solenoid valve 6 is respectively connected to the first oil cylinder 1 and the balance valve 3, the hydraulic pump P2 interface 16 is connected to the third solenoid valve 6, the first non-return valve 11 is located between the hydraulic pump P2 interface 16 and the third solenoid valve 6, the second oil cylinder 2 is respectively connected to the third solenoid valve 6 and the balance valve 3, the first oil cylinder 1 and the second oil cylinder 2 are used to convert the pressure energy of the hydraulic oil into mechanical energy, the electro-hydraulic valve 8 is connected to the second oil cylinder 2, and the electro-hydraulic valve 8 controls the hydraulic system by controlling the switch of the hydraulic oil circuit by an electromagnet. When the electromagnet is energized, it can attract the valve core to realize the function of flow or flow cutoff in the hydraulic oil circuit; conversely, if the electromagnet is de-energized, the valve core returns to the initial state and cuts off the hydraulic oil circuit. Due to the flexibility of electromagnet control, the control of parameters such as flow, pressure and direction of the hydraulic system can be achieved by controlling the on and off of the electromagnet. The electro-hydraulic valve 8 is connected to the return oil T1 port 20, and the return oil T1 port 20 is used for returning oil. The first solenoid valve 4, the second solenoid valve 5, and the fourth solenoid valve 7 are respectively connected to the third solenoid valve 6, and the first solenoid valve 4, the second solenoid valve 5, the third solenoid valve 6, and the fourth solenoid valve 7 are used for controlling the hydraulic system. The first solenoid valve 4 is connected to the second solenoid valve 5, and the second one-way valve 12 is located between the first solenoid valve 4 and the second solenoid valve 5. The second one-way valve 12 is used to limit the flow direction of the hydraulic oil. The hydraulic pump P1 interface 15 is connected to the second solenoid valve 5, and the hydraulic pump P1 interface 15 is used to connect to the hydraulic oil pump. The return oil T2 port 21 is respectively connected to the first solenoid valve 4 and the second solenoid valve 5, and the return oil T2 port 21 is used for returning oil.

[0053] A first pilot relief valve 9 is installed on the first solenoid valve 4. The first pilot relief valve 9 is used to control the flow and pressure of the hydraulic system. The flow of the hydraulic oil is controlled by adjusting the opening of the valve port to ensure that the flow and pressure of the hydraulic oil in the system are stable within a certain range, thereby ensuring the normal operation of the system.

[0054] A second pilot relief valve 10 is installed on the second solenoid valve 5. The second pilot relief valve 10 is used to control the flow and pressure of the hydraulic system. The flow of the hydraulic oil is controlled by adjusting the opening of the valve port to ensure that the flow and pressure of the hydraulic oil in the system are stable within a certain range, thereby ensuring the normal operation of the system.

[0055] A filling valve 14 is provided in the system, and the filling valve 14 is respectively connected to the second oil cylinder 2 and the fourth solenoid valve 7. In the hydraulic system, the filling valve 14 can automatically adjust the pressure of the hydraulic oil circuit system to maintain the balance of the system, and provide protection when the system pressure is too high or too low, thereby maintaining the stability and balance of the system.

[0056] The balance valve 3 is provided with a third one-way valve 13 , and the third one-way valve 13 is used to limit the direction of the hydraulic oil.

[0057] The electro-hydraulic valve 8 is provided with flow regulation.

[0058] The filling valve 14 is connected to a 2.5-inch direct-connected oil tank, which is used for supplying oil.

[0059] The difference between Example 3 and Example 2 is that:

[0060] A pressure detection PG1 port 17 is provided on the hydraulic pump P1 interface 15, and the pressure detection PG1 port 17 is used to detect the pressure in the system.

[0061] A pressure detection PG2 port 18 is provided on the hydraulic pump P2 interface 16 , and the pressure detection PG2 port 18 is used to detect the pressure in the system.

[0062] A pressure detection PG3 port 19 is provided at the connection between the third solenoid valve 6 , the first oil cylinder 1 , and the second oil cylinder 2 , and the pressure detection PG3 port 19 is used to detect the pressure in the system.

[0063] A single-board machine cutting protection hydraulic control system of embodiment 3, when the mold needs to be adjusted downward, the Y2 end of the first solenoid valve 4 and the third solenoid valve 6 are energized to complete the mold adjustment downward; when the mold needs to be adjusted upward, the Y3 end of the first solenoid valve 4 and the third solenoid valve 6 are energized to complete the mold adjustment upward; when fast cutting downward is required, the first solenoid valve 4, the second solenoid valve 5, the Y2 end of the third solenoid valve 6, and the electro-hydraulic valve 8 are energized to complete fast cutting downward; when slow cutting downward is required, the first solenoid valve 4 and the third solenoid valve 6 are energized. The Y2 end is energized to complete slow downward cutting; when pressurization is required, the Y2 ends of the first solenoid valve 4 and the third solenoid valve 6 are energized to complete pressurization; when pressure relief is required, the fourth solenoid valve 7 is energized to complete pressure relief; when slow cutting upward is required, the first solenoid valve 4, the Y3 end of the third solenoid valve 6, and the fourth solenoid valve 7 are energized to complete slow cutting upward; when fast cutting upward is required, the first solenoid valve 4, the second solenoid valve 5, the Y3 end of the third solenoid valve 6, and the fourth solenoid valve 7 are energized to complete fast cutting upward.

[0064] A single board machine cutting protection hydraulic control system is mainly completed by the following:

[0065] 1. The weight of the middle plate of the veneer cutting machine is more than 1 ton. The rapid descent function can be achieved by using the deadweight. The rapid descent is completed by energizing the electro-hydraulic valve 8. The descent speed can be adjusted according to the cutting of different products.

[0066] 2. During rapid descent, negative pressure will be formed in the upper chambers of the first oil cylinder 1 and the second oil cylinder 2, and the oil provided by the oil pump is far from enough to make up for it. At this time, a filling valve 14 is added to the oil circuit for timely replenishment, so that the negative pressure of the first oil cylinder 1 and the second oil cylinder 2 can be resolved;

[0067] 3. When the rapid descent is changed to punching, the rapid descent valve is powered off and closed, and the back pressure of the balance valve 3 is adjusted. The equipment is now turned into a slow cutting state, and the blade will not be damaged by hitting the cut product due to too high speed;

[0068] 4. When the cutting is completed, the third solenoid valve 6 is powered off to complete the mid-position pressure relief. At this time, 2B2 of the control filling valve 14 is powered on to open the filling valve 14;

[0069] 5. When rising, a large amount of oil can pass through the filling valve 14, reducing the oil volume. Insufficient discharge will cause back pressure on the motor and energy loss. The traditional motor can be reduced from 11KW-6P to 7.5KW-6P, saving costs.

[0070] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A single board computer cutting protection hydraulic control system, characterized in that: The invention comprises a first oil cylinder (1), a second oil cylinder (2), a balancing valve (3), a first solenoid valve (4), a second solenoid valve (5), a third solenoid valve (6), a fourth solenoid valve (7), an electro-hydraulic valve (8), a first non-return valve (11), a second non-return valve (12), a hydraulic pump P1 interface (15), a hydraulic pump P2 interface (16), an oil return T1 port (20), and an oil return T2 port (21), wherein the first oil cylinder (1) is connected to the balancing valve (3), the third solenoid valve (6) is connected to the first oil cylinder (1) and the balancing valve (3) respectively, the hydraulic pump P2 interface (16) is connected to the third solenoid valve (6), the first non-return valve (11) is located between the hydraulic pump P2 interface (16) and the third solenoid valve (6), and the The second oil cylinder (2) is connected to the third solenoid valve (6) and the balance valve (3) respectively, the electro-hydraulic valve (8) is connected to the second oil cylinder (2), the electro-hydraulic valve (8) is connected to the oil return T1 port (20), the first solenoid valve (4), the second solenoid valve (5) and the fourth solenoid valve (7) are connected to the third solenoid valve (6) respectively, the first solenoid valve (4) is connected to the second solenoid valve (5), the second one-way valve (12) is located between the first solenoid valve (4) and the second solenoid valve (5), the hydraulic pump P1 interface (15) is connected to the second solenoid valve (5), and the oil return T2 port (21) is connected to the first solenoid valve (4) and the second solenoid valve (5) respectively.

2. A single board computer cutting protection hydraulic control system according to claim 1, characterized in that: A first pilot-operated overflow valve (9) is mounted on the first solenoid valve (4).

3. The single board computer cutting protection hydraulic control system according to claim 1, characterized in that: A second pilot-operated overflow valve (10) is mounted on the second solenoid valve (5).

4. The single board computer cutting protection hydraulic control system according to claim 1, characterized in that: A filling valve (14) is provided in the system, and the filling valve (14) is connected to the second oil cylinder (2) and the fourth solenoid valve (7) respectively.

5. The single board computer cutting protection hydraulic control system according to claim 1, characterized in that: The balancing valve (3) is provided with a third one-way valve (13).

6. The single board computer cutting protection hydraulic control system according to claim 1, characterized in that: The electro-hydraulic valve (8) is provided with flow regulation.

7. The single board computer cutting protection hydraulic control system according to claim 4, characterized in that: The filling valve (14) is connected to a 2.5-inch direct-connected oil tank.

8. The single board computer cutting protection hydraulic control system according to claim 1, characterized in that: A pressure detection PG1 port (17) is provided on the hydraulic pump P1 interface (15).

9. The single board computer cutting protection hydraulic control system according to claim 1, characterized in that: A pressure detection PG2 port (18) is provided on the hydraulic pump P2 interface (16).

10. The single board computer cutting protection hydraulic control system according to claim 1, characterized in that: A pressure detection PG3 port (19) is provided at the connection between the third solenoid valve (6), the first oil cylinder (1) and the second oil cylinder (2).

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