Novel hydraulic control system of rapid metal packing machine

Abstract

The utility model discloses a novel rapid metal packing machine hydraulic control system, which comprises a rapid valve group, a main cylinder, side cylinders, a liquid filling oil tank, a liquid filling valve and a main control valve group, the side cylinders comprise two side cylinders and a middle side cylinder, the rapid valve group is respectively connected with the main cylinder and the two side cylinders, the middle side cylinder and the liquid filling valve are both connected with the liquid filling oil tank, and the main control valve group is connected with the liquid filling oil tank. The two side cylinders are connected with the main cylinder, the middle side cylinder is further connected with the prefill valve, the two side cylinders, the main cylinder and the prefill valve are all connected with the main control valve set, and the main control valve set comprises a plurality of electromagnet switches, a plurality of electromagnetic reversing valves, a plurality of two-way cartridge valves, a plurality of overflow valves and a plurality of shuttle valves. Original invalid oil liquid is recovered and reutilized, rapid advancing and rapid returning of the machine are achieved, the working efficiency of the machine is improved, and the operation cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic control valve groups, and in particular relates to a novel hydraulic control system for a fast metal baler. Background Art

[0002] With the continuous expansion of the domestic renewable resource market, the use of various metal balers has been increasing, and the requirements for the tonnage, efficiency and stability of the machines have also been continuously improved. The two-way cartridge valve has gradually occupied a dominant position in the hydraulic control of such machines due to its advantages such as large oil flow capacity, strong anti-pollution ability, fast response speed and high degree of integration. In pursuit of improving efficiency and saving costs, it is required that the running speed of such machines should be as fast as possible and the time to complete the action cycle should be as short as possible. The traditional hydraulic scheme generally adopts a combination of fast and slow speeds when the cylinders move forward. When unloaded, all cylinders move forward quickly with differential motion, at which time the speed is fast and the force is small; when contacting the workpiece, it changes to slow forward, and the force is changed to full tonnage output; when returning, each cylinder retreats separately. However, due to the large number of cylinders in the machine and the large size of the cylinders, the running speed of the machine depends entirely on the hydraulic pump for oil supply, which makes the machine's action speed relatively slow and the working cycle relatively long, resulting in low work efficiency and high operating costs, which seriously restricts the use and promotion of the machine.

[0003] Therefore, in order to solve the above problems, the utility model provides a novel hydraulic control system for a fast metal baler. Utility Model Content

[0004] In view of the shortcomings in the prior art, the utility model provides a novel hydraulic control system for a fast metal baler, which recycles and reuses the originally invalid oil through the coordinated work of an electromagnetic reversing valve, a filling valve and a two-way cartridge valve, thereby realizing rapid forward and rapid retraction of the machine, improving the working efficiency of the machine and reducing operating costs.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions: a new type of fast metal baler hydraulic control system, characterized in that it includes a fast valve group, a main cylinder, a side cylinder, a liquid filling tank, a liquid filling valve, a main control valve group and a plurality of oil circuits for returning and draining oil, the side cylinder, the main cylinder and the liquid filling valve are also connected to the main control valve group, and the main control valve group is also provided with a plurality of position sensing electronic components and pressure gauges;

[0006] The oil circuits include oil circuit A, oil circuit B, oil circuit C, oil circuit E, oil circuit F and oil circuit G;

[0007] The side cylinders include a middle side cylinder and two side side cylinders used as fast cylinders, the two side side cylinders are respectively a first side cylinder and a second side cylinder, the small cylinder of the middle side cylinder is directly connected to the liquid filling tank, the large cylinder and large cavity of the middle side cylinder is connected to the liquid filling tank through the liquid filling valve, and the large cylinders and large cavities of the first side cylinder and the second side cylinder are connected to the A oil circuit;

[0008] The fast valve group includes a twelfth electromagnetic switch YV12, a twelfth electromagnetic reversing valve, a sixth shuttle valve and a fifth two-way cartridge valve. The twelfth electromagnetic switch YV12 is used to control the twelfth electromagnetic reversing valve. The twelfth electromagnetic reversing valve is connected to the right oil circuit of the sixth shuttle valve. The sixth shuttle valve is also connected to the fifth two-way cartridge valve. The right liquid inlet of the fifth two-way cartridge valve is connected to the C oil circuit through the twelfth electromagnetic reversing valve. The C oil circuit is connected to the small cylinder of the first side cylinder. The middle liquid inlet of the fifth two-way cartridge valve is connected to the G oil circuit, and the G oil circuit is connected to the small cylinder of the master cylinder.

[0009] The main control valve group includes a first two-way cartridge valve equipped with a first electromagnetic switch YV1, a first electromagnetic reversing valve and a first overflow valve, a thirteenth two-way cartridge valve equipped with a second electromagnetic switch YV2, a thirteenth electromagnetic reversing valve and a fourth shuttle valve, a second two-way cartridge valve equipped with a third electromagnetic switch YV3 and a second electromagnetic reversing valve, a third two-way cartridge valve equipped with a fourth electromagnetic switch YV4, a third electromagnetic reversing valve and a fifth shuttle valve, a fourth two-way cartridge valve equipped with a fifth electromagnetic switch YV5 and a fourth electromagnetic reversing valve, a ninth electromagnetic reversing valve equipped with a sixth electromagnetic switch YV6, and a The seventh solenoid switch YV7, the eleventh solenoid reversing valve and the eleventh two-way cartridge valve of the third shuttle valve, equipped with the eighth solenoid switch YV8, the eighth solenoid reversing valve and the eighth two-way cartridge valve of the first shuttle valve, equipped with the ninth solenoid switch YV9, the seventh two-way cartridge valve of the seventh solenoid reversing valve, equipped with the tenth solenoid switch YV10 and the sixth two-way cartridge valve of the sixth solenoid reversing valve, equipped with the eleventh solenoid switch YV11, the tenth solenoid reversing valve and the twelfth cartridge valve of the second shuttle valve, equipped with the thirteenth solenoid switch YV13 and the eleventh two-way cartridge valve of the fifth solenoid reversing valve.

[0010] Further, the first electromagnetic switch YV1 is connected to the first electromagnetic reversing valve, the first electromagnetic reversing valve is connected to the first overflow valve and the first two-way cartridge valve respectively, the first overflow valve is also connected to the first two-way cartridge valve, and the first two-way cartridge valve is also connected to the oil circuit;

[0011] The second solenoid switch YV2 is connected to the thirteenth solenoid reversing valve, the thirteenth solenoid reversing valve is also connected to the fourth shuttle valve, the thirteenth two-way cartridge valve and the oil circuit respectively, the fourth shuttle valve is also connected to the thirteenth two-way cartridge valve, and the thirteenth two-way cartridge valve is connected to the oil circuit through the thirteenth solenoid reversing valve;

[0012] The third electromagnetic switch YV3 is connected to the second electromagnetic reversing valve, the second electromagnetic reversing valve is connected to the second two-way cartridge valve, and the second two-way cartridge valve is connected to the oil circuit through the second electromagnetic reversing valve;

[0013] The fourth solenoid switch YV4 is connected to the third solenoid reversing valve, the third solenoid reversing valve is connected to the fifth shuttle valve, the fifth shuttle valve is also connected to the third two-way cartridge valve, the third two-way cartridge valve is connected to the oil circuit, and then the third two-way cartridge valve is connected to the large chamber of the middle side cylinder through the third solenoid reversing valve, forming a one-way valve circuit;

[0014] The fifth solenoid switch YV5 is connected to the fourth solenoid reversing valve, the fourth solenoid reversing valve is connected to the fourth two-way cartridge valve, and the fourth two-way cartridge valve is connected to the oil circuit through the fourth solenoid reversing valve;

[0015] The sixth solenoid switch YV6 is connected to the ninth solenoid reversing valve, and the ninth solenoid reversing valve is connected to the liquid filling valve;

[0016] The seventh solenoid switch YV7 is connected to the eleventh solenoid reversing valve, the eleventh solenoid reversing valve is respectively connected to the third shuttle valve and the eleventh two-way cartridge valve, the eleventh two-way cartridge valve is connected to the oil circuit through the eleventh solenoid reversing valve, and the third shuttle valve is also connected to the oil circuit;

[0017] The eighth solenoid switch YV8 is connected to the eighth solenoid reversing valve, the eighth solenoid reversing valve is respectively connected to the first shuttle valve and the eighth two-way cartridge valve, the first shuttle valve is also connected to the eighth two-way cartridge valve, and the eighth two-way cartridge valve is connected to the oil circuit through the eighth solenoid reversing valve;

[0018] The ninth solenoid switch YV9 is connected to the seventh solenoid reversing valve, the seventh solenoid reversing valve is connected to the seventh two-way cartridge valve, and the seventh two-way cartridge valve is connected to the oil circuit through the seventh solenoid reversing valve;

[0019] The tenth solenoid switch YV10 is connected to the sixth solenoid reversing valve, the sixth solenoid reversing valve is connected to the sixth two-way cartridge valve, and the sixth two-way cartridge valve is connected to the oil circuit through the sixth solenoid reversing valve;

[0020] The eleventh solenoid switch YV11 is connected to the tenth solenoid reversing valve, the tenth solenoid reversing valve is respectively connected to the second shuttle valve and the twelfth-way cartridge valve, the second shuttle valve is also connected to the twelfth-way cartridge valve, and the twelfth-way cartridge valve is connected to the oil circuit through the tenth solenoid reversing valve;

[0021] The thirteenth electromagnetic switch YV13 is connected to the fifth electromagnetic reversing valve, and the fifth electromagnetic reversing valve is also connected to the eleventh two-way cartridge valve. The eleventh two-way cartridge valve is connected to the return oil through the fifth electromagnetic reversing valve.

[0022] Furthermore, the twelfth-way cartridge valve is also connected to the ninth two-way cartridge valve, the ninth two-way cartridge valve is also connected to the second overflow valve and the third overflow valve, the third overflow valve is also connected to the tenth solenoid reversing valve, and the second overflow valve is also connected to the oil circuit.

[0023] Furthermore, the position sensing electronic components include at least two:

[0024] The pressure gauges include at least 3.

[0025] The beneficial effects of the utility model over the prior art are as follows: compared with the prior art, the hydraulic solution of the utility model adopts an oil recovery and regeneration solution when the cylinder is extended, and the forward speed is faster; during the return stroke, the main cylinder and the side cylinder are combined to achieve reverse recovery and regeneration of the oil, and all cylinders return quickly at the same time; the structure is simple and easy to operate, which not only improves work efficiency but also saves operating costs, making this type of machine more usable and more adaptable. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A working principle diagram of a new type of hydraulic control system for a fast metal baler and a system pressure build-up;

[0028] Figure 2 A working principle diagram of the rapid advancement of the side cylinder of a novel hydraulic control system of a rapid metal baler provided by the embodiment of the utility model;

[0029] Figure 3A working principle diagram of a new type of hydraulic control system for a fast metal baler provided by the embodiment of the utility model for slow forward pressurization of a side cylinder;

[0030] Figure 4 A working principle diagram of a new type of rapid metal baler hydraulic control system provided by the embodiment of the utility model for rapid advancement of the main cylinder;

[0031] Figure 5 A working principle diagram of a new type of hydraulic control system for a fast metal baler provided by the embodiment of the utility model, in which the main cylinder advances slowly and pressurizes;

[0032] Figure 6 A working principle diagram of the main side cylinder unloading of a novel hydraulic control system of a fast metal baler provided by the embodiment of the utility model;

[0033] Figure 7 A working principle diagram of a new type of rapid metal baler hydraulic control system for rapid return of the main side cylinder provided by the embodiment of the utility model;

[0034] Figure 8 A working principle diagram of a main cylinder return stroke of a novel hydraulic control system for a fast metal baler provided in an embodiment of the utility model.

[0035] In the figure, 1.1, a first two-way cartridge valve, 1.10, a second two-way cartridge valve, 1.11, a third two-way cartridge valve, 1.12, a fourth two-way cartridge valve, 1.13, a fifth two-way cartridge valve, 1.2, a sixth two-way cartridge valve, 1.3, a seventh two-way cartridge valve, 1.4, an eighth two-way cartridge valve, 1.5, a ninth two-way cartridge valve, 1.6, a twelfth two-way cartridge valve, 1.7, an eleventh two-way cartridge valve, 1.8, a twelfth two-way cartridge valve, 1.9, a thirteenth two-way cartridge valve;

[0036] 2.1, the first electromagnetic reversing valve, 2.10, the second electromagnetic reversing valve, 2.11, the third electromagnetic reversing valve, 2.12, the fourth electromagnetic reversing valve, 2.13, the fifth electromagnetic reversing valve, 2.2, the sixth electromagnetic reversing valve, 2.3, the seventh electromagnetic reversing valve, 2.4, the eighth electromagnetic reversing valve, 2.5, the ninth electromagnetic reversing valve, 2.6, the tenth electromagnetic reversing valve, 2.7, the eleventh electromagnetic reversing valve, 2.8, the twelfth electromagnetic reversing valve, 2.9, the thirteenth electromagnetic reversing valve;

[0037] 3.1, first relief valve, 3.2, second relief valve, 3.3, third relief valve;

[0038] 4.1, the first shuttle valve, 4.2, the second shuttle valve, 4.3, the third shuttle valve, 4.4, the fourth shuttle valve, 4.5, the fifth shuttle valve, 4.6, the sixth shuttle valve;

[0039] 7.1, a first pressure sensor, 7.2, a second pressure sensor;

[0040] 9.0. Filling valve. DETAILED DESCRIPTION

[0041] The present invention is described below with reference to specific embodiments. Those skilled in the art will appreciate that these embodiments are only used to illustrate the present invention and do not limit the scope of the present invention in any way.

[0042] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be a centered element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a centered element at the same time. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0043] like Figures 1 to 8 As shown, in the embodiment of the utility model, a novel hydraulic control system for a fast metal baler is provided, which is characterized by comprising a fast valve group, a main cylinder, a side cylinder, a liquid filling tank, a liquid filling valve, a main control valve group and a plurality of oil circuits for returning and draining oil, wherein the side cylinder, the main cylinder and the liquid filling valve are also connected to the main control valve group, and the main control valve group is also provided with a plurality of position sensing electronic components and pressure gauges, wherein the position sensing electronic components include at least two, namely a first position sensing electronic component PS1 and a second position sensing electronic component PS2, and the pressure gauges include at least three, namely a first pressure gauge 8.1, a second pressure gauge 8.2 and a third pressure gauge 8.3;

[0044] The oil circuits include oil circuit A, oil circuit B, oil circuit C, oil circuit E, oil circuit F and oil circuit G;

[0045] The side cylinders include a middle side cylinder and two side cylinders used as fast cylinders, the two side cylinders are respectively a first side cylinder and a second side cylinder. The side cylinders suitable for large-tonnage balers are generally three oil cylinders. The small cylinder of the middle side cylinder is directly connected to the liquid filling tank, and the large cylinder and large cavity of the middle side cylinder are connected to the liquid filling tank through the liquid filling valve. The large cylinder and large cavity of the first side cylinder and the second side cylinder are connected to the A oil circuit. When moving forward quickly, the large cavity of the middle oil cylinder absorbs oil, and the small cavity discharges oil to the oil tank. The pump only needs to supply oil to the oil cylinders on both sides, which greatly improves the speed and can improve work efficiency.

[0046] The fast valve group includes a twelfth electromagnetic switch YV12, a twelfth electromagnetic reversing valve 2.8, a sixth shuttle valve and a fifth two-way cartridge valve 1.13. The twelfth electromagnetic switch YV12 is used to control the twelfth electromagnetic reversing valve 2.8. The twelfth electromagnetic reversing valve 2.8 is connected to the right oil circuit of the sixth shuttle valve. The sixth shuttle valve is also connected to the fifth two-way cartridge valve 1.13. The right liquid inlet of the fifth two-way cartridge valve 1.13 is connected to the C oil circuit through the twelfth electromagnetic reversing valve 2.8. The C oil circuit is connected to the small cylinder of the first side cylinder. The middle liquid inlet of the fifth two-way cartridge valve 1.13 is connected to the G oil circuit, and the G oil circuit is connected to the small cylinder of the master cylinder.

[0047] The main control valve group includes a first two-way cartridge valve 1.1 equipped with a first electromagnetic switch YV1, a first electromagnetic reversing valve 2.1 and a first overflow valve 3.1, a thirteenth two-way cartridge valve 1.9 equipped with a second electromagnetic switch YV2, a thirteenth electromagnetic reversing valve 2.9 and a fourth shuttle valve, a second two-way cartridge valve 1.10 equipped with a third electromagnetic switch YV3 and a second electromagnetic reversing valve 2.10, a third two-way cartridge valve 1.11 equipped with a fourth electromagnetic switch YV4, a third electromagnetic reversing valve 2.11 and a fifth shuttle valve, a fourth two-way cartridge valve 1.12 equipped with a fifth electromagnetic switch YV5 and a fourth electromagnetic reversing valve 2.12, and a ninth electromagnetic reversing valve 2.5 equipped with a sixth electromagnetic switch YV6. , equipped with the seventh solenoid switch YV7, the eleventh solenoid reversing valve 2.7 and the eleventh two-way cartridge valve 1.7 of the third shuttle valve, equipped with the eighth solenoid switch YV8, the eighth solenoid reversing valve 2.4 and the eighth two-way cartridge valve 1.4 of the first shuttle valve, equipped with the ninth solenoid switch YV9, the seventh solenoid reversing valve 2.3, equipped with the sixth two-way cartridge valve 1.2 of the tenth solenoid switch YV10 and the sixth solenoid reversing valve 2.2, equipped with the eleventh solenoid switch YV11, the tenth solenoid reversing valve 2.6 and the twelfth cartridge valve 1.6 of the second shuttle valve, equipped with the thirteenth solenoid switch YV13 and the eleventh two-way cartridge valve 1.7 of the fifth solenoid reversing valve 2.13.

[0048] The first solenoid switch YV1 is connected to the first solenoid reversing valve 2.1, the first solenoid reversing valve 2.1 is connected to the first overflow valve 3.1 and the first two-way cartridge valve 1.1 respectively, the first overflow valve 3.1 is also connected to the first two-way cartridge valve 1.1, and the first two-way cartridge valve 1.1 is also connected to the oil circuit;

[0049] The second electromagnetic switch YV2 is connected to the thirteenth electromagnetic reversing valve 2.9, and the thirteenth electromagnetic reversing valve 2.9 is also connected to the fourth shuttle valve and the thirteenth two-way cartridge valve 1.9 respectively. The oil return port of the thirteenth electromagnetic reversing valve 2.9 is connected to the oil circuit, and the fourth shuttle valve is also connected to the thirteenth two-way cartridge valve 1.9. The thirteenth two-way cartridge valve 1.9 is connected to the oil circuit through the thirteenth electromagnetic reversing valve 2.9;

[0050] The third electromagnetic switch YV3 is connected to the second electromagnetic reversing valve 2.10, the second electromagnetic reversing valve 2.10 is connected to the second two-way cartridge valve 1.10, the second two-way cartridge valve 1.10 is connected to the oil circuit through the second electromagnetic reversing valve 2.10, and the oil return port of the second electromagnetic reversing valve 2.10 is also connected to the oil circuit;

[0051] The fourth electromagnetic switch YV4 is connected to the third electromagnetic reversing valve 2.11, the oil return port of the third electromagnetic reversing valve 2.11 is connected to the oil circuit, the third electromagnetic reversing valve 2.11 is also connected to the fifth shuttle valve, the fifth shuttle valve is also connected to the third two-way cartridge valve 1.11, the third two-way cartridge valve 1.11 is connected to the oil circuit, and then the third two-way cartridge valve 1.11 is connected to the large chamber of the middle side cylinder through the third electromagnetic reversing valve 2.11, forming a one-way valve circuit;

[0052] The fifth electromagnetic switch YV5 is connected to the fourth electromagnetic reversing valve 2.12, the oil return port of the fourth electromagnetic reversing valve 2.12 is connected to the oil circuit, the fourth electromagnetic reversing valve 2.12 is also connected to the fourth two-way cartridge valve 1.12, and the fourth two-way cartridge valve 1.12 is connected to the oil circuit through the fourth electromagnetic reversing valve 2.12;

[0053] The sixth electromagnetic switch YV6 is connected to the ninth electromagnetic reversing valve 2.5, and the ninth electromagnetic reversing valve 2.5 is connected to the filling valve;

[0054] The seventh solenoid switch YV7 is connected to the eleventh solenoid reversing valve 2.7, the eleventh solenoid reversing valve 2.7 is respectively connected to the third shuttle valve and the eleventh two-way cartridge valve 1.7, the eleventh two-way cartridge valve 1.7 is connected to the oil circuit through the eleventh solenoid reversing valve 2.7, and the third shuttle valve is also connected to the oil circuit;

[0055] The eighth solenoid switch YV8 is connected to the eighth solenoid reversing valve 2.4, the oil return port of the eighth solenoid reversing valve 2.4 is connected to the oil circuit, the eighth solenoid reversing valve 2.4 is also connected to the first shuttle valve and the eighth two-way cartridge valve 1.4 respectively, the first shuttle valve is also connected to the eighth two-way cartridge valve 1.4, and the eighth two-way cartridge valve 1.4 is connected to the oil circuit through the eighth solenoid reversing valve 2.4;

[0056] The ninth solenoid switch YV9 is connected to the seventh solenoid reversing valve 2.3, the oil return port of the seventh solenoid reversing valve 2.3 is connected to the oil circuit, the seventh solenoid reversing valve 2.3 is also connected to the seventh two-way cartridge valve 1.3, and the seventh two-way cartridge valve 1.3 is connected to the oil circuit through the seventh solenoid reversing valve 2.3;

[0057] The tenth electromagnetic switch YV10 is connected to the sixth electromagnetic reversing valve 2.2, the oil return port of the sixth electromagnetic reversing valve 2.2 is connected to the oil circuit, the sixth electromagnetic reversing valve 2.2 is also connected to the sixth two-way cartridge valve 1.2, and the sixth two-way cartridge valve 1.2 is connected to the oil circuit through the sixth electromagnetic reversing valve 2.2;

[0058] The eleventh solenoid switch YV11 is connected to the tenth solenoid reversing valve 2.6, the tenth solenoid reversing valve 2.6 is respectively connected to the second shuttle valve and the twelfth-way cartridge valve 1.6, the second shuttle valve is also connected to the twelfth-way cartridge valve 1.6, and the twelfth-way cartridge valve 1.6 is connected to the oil circuit through the tenth solenoid reversing valve 2.6;

[0059] The twelfth-way cartridge valve 1.6 is also connected to the ninth two-way cartridge valve 1.5, and the ninth two-way cartridge valve 1.5 is also connected to the second overflow valve 3.2 and the third overflow valve 3.3, and the third overflow valve 3.3 is also connected to the tenth electromagnetic reversing valve 2.6, and the second overflow valve 3.2 is also connected to the oil circuit;

[0060] The thirteenth electromagnetic switch YV13 is connected to the fifth electromagnetic reversing valve 2.13, and the fifth electromagnetic reversing valve 2.13 is also connected to the eleventh two-way cartridge valve 1.7. The eleventh two-way cartridge valve 1.7 is connected to the return oil through the fifth electromagnetic reversing valve 2.13.

[0061] In this embodiment, one end of the A oil circuit is connected to the large cylinders of the first side cylinder and the second side cylinder respectively, and the other end of the A oil circuit is connected to the thirteenth two-way cartridge valve 1.9 and the second electromagnetic reversing valve 2.10 respectively. The A oil circuit is arranged on the pipeline outside the main control valve group and is also provided with a third pressure gauge 8.3;

[0062] One end of the C oil circuit is connected to the small cylinders of the first side cylinder and the second side cylinder respectively, and the other end of the C oil circuit is connected to the third shuttle valve 4.3;

[0063] One end of the B oil circuit is connected to the filling valve 9.0 and the oil circuit of the middle side cylinder, and the other end of the B oil circuit is connected to the third two-way cartridge valve 1.11 and the fourth two-way cartridge valve 1.12 respectively;

[0064] One end of the F oil circuit is connected to the filling valve 9.0, and the other end of the F oil circuit is connected to the ninth electromagnetic reversing valve 2.5;

[0065] One end of the D oil circuit is connected to the master cylinder, and the other end of the D oil circuit is connected to the eighth two-way cartridge valve 1.4 and the seventh solenoid reversing valve 2.3 respectively. The D oil circuit is also provided with a second pressure gauge 8.2 on the pipeline outside the main control valve group.

[0066] In this embodiment, the oil circuit connected to the above-mentioned two-way cartridge valve converges on the main oil return port and the main oil inlet port of the main control valve group. The oil circuit connecting the oil inlet port and the above-mentioned two-way cartridge valve on the main control valve group is also provided with a first pressure gauge 8.1, a first position sensing electronic component PS1 and a second position sensing electronic component PS2. The first position sensing electronic component PS1 and the second position sensing electronic component PS2 are used to receive the position information of the two-way cartridge valve of the main control valve group and transmit it to the electronic control end through electrical signals.

[0067] In this embodiment, when working, the hydraulic control system specifically includes the following control methods:

[0068] refer to Figure 1 , start the oil pump, and the system builds up pressure: the first solenoid switch YV1 is energized, the first solenoid reversing valve 2.1 is in the left position, the C chamber oil circuit of the first two-way cartridge valve 1.1 is closed, the first two-way cartridge valve 1.1 is closed, and the system pressure is set by the first relief valve 3.1;

[0069] refer to Figure 2 , the side cylinder moves forward quickly: (1) the second solenoid switch YV2 is energized, the thirteenth solenoid reversing valve 2.9 is in the left position, the right oil path of the fourth shuttle valve 4.4 is connected to the return oil, and the center steel ball is located on the right side. The C chamber of the thirteenth two-way cartridge valve 1.9 is connected to the upper chamber of the oil cylinder through the thirteenth solenoid reversing valve 2.9, forming a one-way valve loop. The thirteenth two-way cartridge valve 1.9 opens, and the oil enters the large chamber of the oil cylinder; the twelfth two-way cartridge valve 1.8 of the oil cylinder small chamber used for the oil drain valve is not opened, causing the large and small chambers of the oil cylinder to increase pressure at the same time. Since the area of ​​the large chamber of a general oil cylinder is twice that of the small chamber, the pressure of the small chamber is about twice that of the large chamber at this time;

[0070] (2) The seventh solenoid switch YV7 is energized at the same time, the eleventh solenoid reversing valve 2.7 is in the left position, the C chamber of the eleventh two-way cartridge valve 1.7 is connected to the return oil through the eleventh solenoid reversing valve 2.7, the eleventh two-way cartridge valve 1.7 is opened, and the system pressure oil is connected to the small chamber of the cylinder; because the pressure of the small chamber of the cylinder is higher than the system pressure at this time, the pressure oil of the small chamber flows into the main oil circuit, and then flows into the large chamber of the cylinder through the thirteenth two-way cartridge valve 1.9, realizing the recycling of oil.

[0071] refer to Figure 3 , the side cylinder moves forward slowly and pressurizes: (1) After the side cylinder contacts the workpiece, the pressure rises to the set value of the first pressure sensor 7.1, and the first position sensing electronic element PS1 sends a signal; the fourth solenoid switch YV4 is energized, the third solenoid reversing valve 2.11 is in the left position, the right oil circuit of the fifth shuttle valve 4.5 returns oil, and the center steel ball is located on the right side. The C cavity of the third two-way cartridge valve 1.11 is connected to the large cavity of the middle oil cylinder through the third solenoid reversing valve 2.11, forming a one-way valve loop, the third two-way cartridge valve 1.11 opens, and the oil enters the large cavity of the middle oil cylinder;

[0072] (3) The thirteenth solenoid switch YV13 is energized at the same time, the fifth solenoid reversing valve 2.13 is in the left position, the C chamber of the twelfth two-way cartridge valve 1.8 is connected to the return oil through the fifth solenoid reversing valve 2.13, the twelfth two-way cartridge valve 1.8 is opened, and the oil in the small chamber is returned to the oil tank;

[0073] (4) The seventh solenoid switch YV7 loses power at the same time, the eleventh solenoid reversing valve 2.7 is in the right position, the C chamber of the eleventh two-way cartridge valve 1.7 is connected to the main system pressure oil through the eleventh solenoid reversing valve 2.7, the eleventh two-way cartridge valve 1.7 is closed, and the system pressure oil is disconnected from the small chamber of the cylinder, thereby realizing the slow full-tonnage output of the side cylinder.

[0074] refer to Figure 4 , the master cylinder moves forward quickly: (1) the eighth solenoid switch YV8 is energized, the eighth solenoid reversing valve 2.4 is in the left position, the right oil circuit of the first shuttle valve 4.1 is connected to the return oil, and the center steel ball is located on the right side. The C cavity of the eighth two-way cartridge valve 1.4 is connected to the upper cavity of the oil cylinder through the eighth solenoid reversing valve 2.4, forming a one-way valve loop. The eighth two-way cartridge valve 1.4 is opened, and the oil enters the large cavity of the oil cylinder;

[0075] (2) The eleventh solenoid switch YV11 is energized at the same time, the tenth solenoid reversing valve 2.6 is in the left position, and the system pressure oil acts on the return oil side of the third relief valve 3.3 through the second shuttle valve 4.2, so that the third relief valve 3.3 cannot be opened, thereby closing the ninth two-way cartridge valve 1.5 used as the oil drain valve in the small chamber of the oil cylinder, and the pressure in the small chamber of the oil cylinder is increased. Since the area of ​​the large chamber of a general oil cylinder is twice that of the small chamber, the pressure of the small chamber is about twice that of the large chamber at this time; at the same time, the C chamber of the twelfth cartridge valve 1.6 is connected to the return oil through the tenth solenoid reversing valve 2.6, the twelfth cartridge valve 1.6 is opened, and the system pressure oil is connected to the small chamber of the oil cylinder; since the pressure of the small chamber of the oil cylinder is higher than the system pressure at this time, the pressure oil in the small chamber flows into the main oil circuit, and then flows into the large chamber of the oil cylinder through the eighth two-way cartridge valve 1.4, realizing the recycling of oil.

[0076] refer to Figure 5 , the master cylinder moves forward slowly and pressurizes: (1) After the master cylinder contacts the workpiece, the pressure rises to the set value of the second pressure sensor 7.2, and the second position sensing electronic element PS2 sends a signal; the eleventh solenoid switch YV11 loses power, the tenth solenoid reversing valve 2.6 is in the right position, the return oil side of the third relief valve 3.3 is connected to the return oil through the tenth solenoid reversing valve 2.6, the third relief valve 3.3 is opened, and the C chamber of the ninth two-way cartridge valve 1.5 is connected to the return oil through the third relief valve 3.3 and the tenth solenoid reversing valve 2.6, so that the oil drain valve of the small chamber of the oil cylinder, the ninth two-way cartridge valve 1.5, is opened, and the oil in the small chamber is returned to the oil tank;

[0077] (2) The left oil path of the second shuttle valve 4.2 is connected to the return oil, and the center steel ball is located on the left. The C chamber of the twelfth-way cartridge valve 1.6 is connected to the system pressure oil through the tenth solenoid reversing valve 2.6. The twelfth-way cartridge valve 1.6 is closed, and the system pressure oil is disconnected from the small chamber of the cylinder; the slow full-tonnage output of the master cylinder is achieved.

[0078] refer to Figure 6 , Master cylinder unloading: (1) Master cylinder unloading: The tenth solenoid switch YV10 is energized, the sixth solenoid reversing valve 2.2 is in the left position, the C chamber of the sixth two-way cartridge valve 1.2 is connected to the return oil through the sixth solenoid reversing valve 2.2, the sixth two-way cartridge valve 1.2 is opened, the oil in the large chamber of the master cylinder is returned to the oil tank, and the unloading is completed;

[0079] (2) Side cylinder unloading: The fifth solenoid switch YV5 is energized, the fourth solenoid reversing valve 2.12 is in the left position, the C chamber of the fourth two-way cartridge valve 1.12 is connected to the return oil through the fourth solenoid reversing valve 2.12, the fourth two-way cartridge valve 1.12 is opened, and the oil in the large chamber of the middle side cylinder is returned to the oil tank, and the unloading is completed; the fourth solenoid switch YV4 is energized at the same time, the third solenoid reversing valve 2.11 is in the left position, the central steel ball of the fifth shuttle valve 4.5 is located on the right, the C chamber of the third two-way cartridge valve 1.11 is connected to the large chamber of the middle oil cylinder through the third solenoid reversing valve 2.11, forming a one-way valve loop, the third two-way cartridge valve 1.11 is opened, and the oil in the large chambers of the oil cylinders on both sides enters the main return oil port through the fourth two-way cartridge valve 1.12 and is returned to the oil tank, and the unloading is completed.

[0080] refer to Figure 7 , the main side cylinder quickly returns: (1) the eleventh solenoid switch YV11 is energized, the tenth solenoid reversing valve 2.6 is in the left position, and the system pressure oil acts on the return oil side of the third overflow valve 3.3 through the second shuttle valve 4.2, so that the third overflow valve 3.3 cannot be opened, thereby closing the ninth two-way cartridge valve 1.5, the oil drain valve of the small chamber of the oil cylinder; at the same time, the C chamber of the twelfth cartridge valve 1.6 is connected to the return oil through the tenth solenoid reversing valve 2.6, the twelfth cartridge valve 1.6 is opened, the system pressure oil is connected to the small chamber of the oil cylinder, and the small chamber of the oil cylinder is pressurized;

[0081] (2) Since the ninth solenoid switch YV9 is not energized, the seventh solenoid reversing valve 2.3 is in the right position, and the oil in the main cylinder cavity is connected to the C cavity of the seventh two-way cartridge valve 1.3 through the seventh solenoid reversing valve 2.3. The main cylinder cavity oil drain valve, the seventh two-way cartridge valve 1.3, is closed. The oil in the main cylinder cavity has nowhere to be released, and the oil pressure in the cavity increases;

[0082] (3) In the fast valve group, the twelfth solenoid switch YV12 is energized, the seventh solenoid reversing valve 2.3 is in the left position, the right oil circuit of the sixth shuttle valve 4.6 is connected to the return oil, and the center steel ball is located on the right side. The C cavity of the fifth two-way cartridge valve 1.13 is connected to the small cavity of the side cylinder through the seventh solenoid reversing valve 2.3 to form a one-way valve loop. The fifth two-way cartridge valve 1.13 is opened, and the oil enters the small cavity of the side cylinder;

[0083] (4) The sixth solenoid switch YV6 is energized, the ninth solenoid reversing valve 2.5 is in the left position, the system pressure oil is connected to the pilot control port of the filling valve 9.0 through the ninth solenoid reversing valve 2.5, the filling valve 9.0 is opened, and the large cavity of the middle side cylinder is connected to the oil tank;

[0084] (5) The third solenoid switch YV3 is energized, the ninth solenoid reversing valve 2.5 is in the left position, the C chamber of the second two-way cartridge valve 1.10 is connected to the return oil through the second solenoid reversing valve 2.10, the second two-way cartridge valve 1.10 is opened, and the oil in the large chambers of the side cylinders on both sides is returned to the oil tank; in order to further increase the oil discharge speed, the fourth solenoid switch YV4 is energized, the third solenoid reversing valve 2.11 is in the left position, the right oil path of the fifth shuttle valve 4.5 is connected to the return oil, and the center steel ball is located on the right side, the C chamber of the third two-way cartridge valve 1.11 is connected to the large chamber of the middle oil cylinder through the third solenoid reversing valve 2.11, forming a one-way valve loop, the third two-way cartridge valve 1.11 is opened, the oil enters the large chamber of the middle oil cylinder, and then enters the oil tank, the large chamber of the oil cylinder forms two-way oil discharge, and the return speed increases accordingly. Among them, since the main cylinder and side cylinder of the large-tonnage metal baler are larger, the stroke is longer, and the return time is relatively long; in this hydraulic scheme, during the retraction process of the main and side cylinders, due to the action of the fast valve group, the oil in the large chamber of the main cylinder enters the small chamber of the side cylinder, driving the side cylinders to return at the same time, realizing the recovery and regeneration of the oil, saving the time of the side cylinder's separate return, significantly improving work efficiency and reducing operating costs.

[0085] refer to Figure 8 , Master cylinder return stroke: Since the total oil volume of the master cylinder's large chamber is greater than the total oil volume of the side cylinder's small chamber, after the side cylinder returns to its full length, the master cylinder also needs to return separately; the details are as follows:

[0086] (1) The eleventh solenoid switch YV11 is energized, the tenth solenoid reversing valve 2.6 is in the left position, and the system pressure oil acts on the return oil side of the third relief valve 3.3 through the second shuttle valve 4.2, so that the third relief valve 3.3 cannot be opened, thereby closing the ninth two-way cartridge valve 1.5 used as the oil drain valve in the small chamber of the oil cylinder; at the same time, the C chamber of the twelfth cartridge valve 1.6 is connected to the return oil through the tenth solenoid reversing valve 2.6, the twelfth cartridge valve 1.6 is opened, and the system pressure oil is connected to the small chamber of the oil cylinder;

[0087] (2) The ninth solenoid switch YV9 is energized, the seventh solenoid reversing valve 2.3 is at the left end, the C chamber of the seventh two-way cartridge valve 1.3 is connected to the return oil through the seventh solenoid reversing valve 2.3, the seventh two-way cartridge valve 1.3 is opened, the oil in the large chamber of the master cylinder is returned to the oil tank, and the master cylinder retracts.

[0088] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A new type of hydraulic control system for fast metal baling machine, characterized by: It includes a quick valve group, a main cylinder, a side cylinder, a filling oil tank, a filling valve, a main control valve group and a plurality of oil circuits for returning and draining oil. The side cylinder, the main cylinder and the filling valve are also connected to the main control valve group. The main control valve group is also provided with a plurality of position sensing electronic components and pressure gauges. The oil circuits include oil circuit A, oil circuit B, oil circuit C, oil circuit E, oil circuit F and oil circuit G; The side cylinders include a middle side cylinder and two side side cylinders used as fast cylinders, the two side side cylinders are respectively a first side cylinder and a second side cylinder, the small cylinder of the middle side cylinder is directly connected to the liquid filling tank, the large cylinder and large cavity of the middle side cylinder is connected to the liquid filling tank through the liquid filling valve, and the large cylinders and large cavities of the first side cylinder and the second side cylinder are connected to the A oil circuit; The fast valve group includes a twelfth electromagnetic switch YV12, a twelfth electromagnetic reversing valve, a sixth shuttle valve and a fifth two-way cartridge valve, the twelfth electromagnetic switch YV12 is used to control the twelfth electromagnetic reversing valve, the twelfth electromagnetic reversing valve is connected to the right oil circuit of the sixth shuttle valve, the sixth shuttle valve is also connected to the fifth two-way cartridge valve, the right liquid inlet of the fifth two-way cartridge valve is connected to the C oil circuit through the twelfth electromagnetic reversing valve, the C oil circuit is connected to the small cylinder of the first side cylinder, the middle liquid inlet of the fifth two-way cartridge valve is connected to the G oil circuit, and the G oil circuit is connected to the small cylinder of the master cylinder; The main control valve group includes a first two-way cartridge valve equipped with a first electromagnetic switch YV1, a first electromagnetic reversing valve and a first overflow valve, a thirteenth two-way cartridge valve equipped with a second electromagnetic switch YV2, a thirteenth electromagnetic reversing valve and a fourth shuttle valve, a second two-way cartridge valve equipped with a third electromagnetic switch YV3 and a second electromagnetic reversing valve, a third two-way cartridge valve equipped with a fourth electromagnetic switch YV4, a third electromagnetic reversing valve and a fifth shuttle valve, a fourth two-way cartridge valve equipped with a fifth electromagnetic switch YV5 and a fourth electromagnetic reversing valve, a ninth electromagnetic reversing valve equipped with a sixth electromagnetic switch YV6, and a The seventh solenoid switch YV7, the eleventh solenoid reversing valve and the eleventh two-way cartridge valve of the third shuttle valve, equipped with the eighth solenoid switch YV8, the eighth solenoid reversing valve and the eighth two-way cartridge valve of the first shuttle valve, equipped with the ninth solenoid switch YV9, the seventh two-way cartridge valve of the seventh solenoid reversing valve, equipped with the tenth solenoid switch YV10 and the sixth two-way cartridge valve of the sixth solenoid reversing valve, equipped with the eleventh solenoid switch YV11, the tenth solenoid reversing valve and the twelfth cartridge valve of the second shuttle valve, equipped with the thirteenth solenoid switch YV13 and the eleventh two-way cartridge valve of the fifth solenoid reversing valve.

2. A novel hydraulic control system for a fast metal baler as claimed in claim 1, characterized in that: The first electromagnetic switch YV1 is connected to the first electromagnetic reversing valve, the first electromagnetic reversing valve is respectively connected to the first overflow valve and the first two-way cartridge valve, the first overflow valve is also connected to the first two-way cartridge valve, and the first two-way cartridge valve is also connected to the oil circuit; The second solenoid switch YV2 is connected to the thirteenth solenoid reversing valve, the thirteenth solenoid reversing valve is also connected to the fourth shuttle valve, the thirteenth two-way cartridge valve and the oil circuit respectively, the fourth shuttle valve is also connected to the thirteenth two-way cartridge valve, and the thirteenth two-way cartridge valve is connected to the oil circuit through the thirteenth solenoid reversing valve; The third electromagnetic switch YV3 is connected to the second electromagnetic reversing valve, the second electromagnetic reversing valve is connected to the second two-way cartridge valve, and the second two-way cartridge valve is connected to the oil circuit through the second electromagnetic reversing valve; The fourth solenoid switch YV4 is connected to the third solenoid reversing valve, the third solenoid reversing valve is connected to the fifth shuttle valve, the fifth shuttle valve is also connected to the third two-way cartridge valve, the third two-way cartridge valve is connected to the oil circuit, and then the third two-way cartridge valve is connected to the large chamber of the middle side cylinder through the third solenoid reversing valve, forming a one-way valve circuit; The fifth solenoid switch YV5 is connected to the fourth solenoid reversing valve, the fourth solenoid reversing valve is connected to the fourth two-way cartridge valve, and the fourth two-way cartridge valve is connected to the oil circuit through the fourth solenoid reversing valve; The sixth solenoid switch YV6 is connected to the ninth solenoid reversing valve, and the ninth solenoid reversing valve is connected to the liquid filling valve; The seventh solenoid switch YV7 is connected to the eleventh solenoid reversing valve, the eleventh solenoid reversing valve is respectively connected to the third shuttle valve and the eleventh two-way cartridge valve, the eleventh two-way cartridge valve is connected to the oil circuit through the eleventh solenoid reversing valve, and the third shuttle valve is also connected to the oil circuit; The eighth solenoid switch YV8 is connected to the eighth solenoid reversing valve, the eighth solenoid reversing valve is respectively connected to the first shuttle valve and the eighth two-way cartridge valve, the first shuttle valve is also connected to the eighth two-way cartridge valve, and the eighth two-way cartridge valve is connected to the oil circuit through the eighth solenoid reversing valve; The ninth solenoid switch YV9 is connected to the seventh solenoid reversing valve, the seventh solenoid reversing valve is connected to the seventh two-way cartridge valve, and the seventh two-way cartridge valve is connected to the oil circuit through the seventh solenoid reversing valve; The tenth solenoid switch YV10 is connected to the sixth solenoid reversing valve, the sixth solenoid reversing valve is connected to the sixth two-way cartridge valve, and the sixth two-way cartridge valve is connected to the oil circuit through the sixth solenoid reversing valve; The eleventh solenoid switch YV11 is connected to the tenth solenoid reversing valve, the tenth solenoid reversing valve is respectively connected to the second shuttle valve and the twelfth-way cartridge valve, the second shuttle valve is also connected to the twelfth-way cartridge valve, and the twelfth-way cartridge valve is connected to the oil circuit through the tenth solenoid reversing valve; The thirteenth electromagnetic switch YV13 is connected to the fifth electromagnetic reversing valve, and the fifth electromagnetic reversing valve is also connected to the eleventh two-way cartridge valve. The eleventh two-way cartridge valve is connected to the return oil through the fifth electromagnetic reversing valve.

3. A novel hydraulic control system for a fast metal baler as claimed in claim 1, characterized in that: The twelfth-way cartridge valve is also connected to the ninth two-way cartridge valve, the ninth two-way cartridge valve is also connected to the second overflow valve and the third overflow valve, the third overflow valve is also connected to the tenth electromagnetic reversing valve, and the second overflow valve is also connected to the oil circuit.

4. A novel fast metal baler hydraulic control system as claimed in claim 1, characterized in that: The position sensing electronic components include at least two, The pressure gauges include at least 3.

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