Combination valve for rapidly assisting lifting of cylinder of rubber flat vulcanizing machine

Abstract

The utility model relates to the technical field of control valves in hydraulic control equipment, in particular to a combination valve for rapidly assisting in lifting a cylinder of a rubber flat vulcanizing machine. Comprising a valve body, an electromagnetic directional valve arranged on the valve body, a counterbalance valve, plugs arranged on ports of oil way channels and process channels on the valve body, and a fixing support used for installing the combination valve. The valve body is an integrally-formed casting part and comprises an installation structure and an oil way channel of an upper electromagnetic reversing valve, an installation structure and an oil way channel of a middle counterbalance valve and an oil way channel of a lower butt-joint oil hydraulic cylinder. The valve group is provided with an oil inlet channel port P and an oil return channel port T corresponding to a hydraulic system, and the oil inlet channel port P and the oil return channel port T correspond to oil inlets A1 and A2 of the two sets of hydraulic cylinders respectively and correspond to oil return ports B1 and B2 of the two sets of hydraulic cylinders respectively. The valve group is a compact valve group which integrates the functions of an electromagnetic directional valve and a counterbalance valve.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber molding equipment, in particular to a combined valve for quickly assisting the lifting of a cylinder of a rubber flat plate vulcanizer. Background Art

[0002] Rubber plate vulcanizer is mainly used for vulcanizing flat tapes, rubber sheets, polymers and other flat products. The main function of the plate vulcanizer is to provide the pressure and temperature required for vulcanization. The pressure is generated by the hydraulic system through the hydraulic cylinder.

[0003] The most common rubber vulcanizer is the hydraulic vulcanizer, which consists of three parts: the main machine, the hydraulic system, and the electrical control system. The mold opening, mold closing, and pressure holding of the vacuum cover of the rubber vulcanizer are controlled by the hydraulic system, including: hydraulic control of the mold closing cylinder, hydraulic control of the mold pushing cylinder, and hydraulic control of the demoulding cylinder. In order to achieve the rapid lifting and lowering of the main workbench, an auxiliary cylinder is used.

[0004] The hydraulic valve group of the control part of the existing rubber plate vulcanizer is a plate-type hydraulic valve, which is centrally installed on a relatively large integrated block. The installation form is complex, the valve block is relatively large in size and weight, and the overall production cost is high. In order to ensure the normal operation of the auxiliary oil cylinder, the valve group is assembled according to the functions to be realized. The valve group includes: oil distribution block, electromagnetic reversing valve, counterbalance valve, joints and other components. In addition, the assembly of multiple general hydraulic components also has the problems of multiple process oil channels, large pipeline pressure loss, high hydraulic power loss, high temperature under high-speed operation, and unsatisfactory heat dissipation control. It affects the stability of the opening and closing of the rubber plate vulcanizer, increases the failure rate, and reduces the utilization rate. Enterprises need to invest special operation and maintenance personnel and production costs to adjust and maintain it. Summary of the invention

[0005] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the utility model is to provide a combined valve for quickly assisting the lifting of the cylinder of a rubber plate vulcanizer, which integrates the functions of the electromagnetic reversing valve and the counterbalancing valve into one valve body, which has a small size and good flexibility.

[0006] The technical solution adopted by the utility model is:

[0007] A combination valve for rapid auxiliary cylinder lifting of a rubber plate vulcanizer, comprising a valve body, an electromagnetic reversing valve arranged on the valve body, a counterbalance valve, plugs arranged on the ports of each oil channel and process channel on the valve body, and a fixing bracket for installing the combination valve, wherein the valve body comprises a rectangular parallelepiped structure, the rectangular parallelepiped structure is located above the valve body, the four vertical edges are arc-shaped, a first cylinder is arranged in the middle of the length direction of the rectangular parallelepiped structure, and the first cylinder and the rectangular parallelepiped structure are symmetrically arranged; the first cylinder is provided with a plurality of An electromagnetic valve core insertion hole; a valve main oil inlet channel and a valve main oil return channel are vertically arranged on both sides of the top surface of the rectangular structure, and the valve main oil inlet channel and the valve main oil return channel are respectively arranged on both sides of the first cylinder along the axis; the fourth cylinder is arranged below the first cylinder, and the fourth cylinder and the first cylinder are arranged perpendicular to each other, and a counterbalance valve insertion hole is arranged on the fourth cylinder along the axis, and a fifth cylinder is arranged on the other side of the fourth cylinder, and the fifth cylinder is located in the middle of the fourth cylinder, and a base is arranged below the fourth cylinder and the fifth cylinder.

[0008] The solenoid valve core insertion hole is a penetrating circular through hole, and a plurality of annular channels are arranged inside, including a solenoid valve oil inlet cavity, the solenoid valve oil inlet cavity is arranged in the middle of the solenoid valve core insertion hole, the first cavity is arranged on the left side of the solenoid valve oil inlet cavity, and the second cavity is arranged on the right side of the solenoid valve oil inlet cavity. The solenoid valve oil return cavity is provided with two groups, respectively on both sides of the first cavity and the second cavity, and the two groups of solenoid valve oil return cavities are connected.

[0009] A third working oil channel and a fourth working oil channel are also provided in the valve body. The starting ends of the third working oil channel and the fourth working oil channel are connected to the insertion hole of the electromagnetic valve core, the third working oil channel is connected to the second cavity, and the fourth working oil channel is connected to the first cavity. The third working oil channel and the fourth working oil channel are arranged to penetrate downward from the starting position. The third working oil channel is vertically arranged in the fifth cylinder and penetrates to the base. The fourth working oil channel is vertically arranged in the fourth cylinder, penetrates the insertion hole of the counterbalancing valve, and penetrates to the base.

[0010] A first working oil channel and a second working oil channel are provided through the side of the base, and the axes of the first working oil channel and the second working oil channel are perpendicular to the axis of the counterbalance valve insertion hole. The first working oil channel is located below the opening of the counterbalance valve insertion hole, and the second working oil channel is located below the bottom of the counterbalance valve insertion hole.

[0011] A first process channel is arranged on the other side of the base, and a port of the first process channel is on the same side as a port of a counterbalance valve insertion hole arranged on the fourth cylinder. The first process channel runs through the first working oil channel and is connected to the third working oil channel.

[0012] A bracket fixing hole, a second process channel and a third process channel are also provided at the bottom of the base. The bracket fixing hole matches the connecting hole on the fixed bracket. The third process channel is vertically arranged upward and connected with the first working oil channel and the counterbalance valve insertion hole. The second process channel is vertically arranged upward from the bottom of the base, passes through the second working oil channel, and is connected with the bottom of the counterbalance valve insertion hole.

[0013] The valve body is an integrally formed part, and the interconnections between the first cylinder, the rectangular parallelepiped structure, the fourth cylinder, the fifth cylinder and the base are arc-shaped.

[0014] The counterbalance valve mounting hole and the counterbalance valve installed inside form three groups of oil ports, which include a counterbalance valve oil inlet, a counterbalance valve oil return port, and a counterbalance valve control oil port. The counterbalance valve oil inlet is located at the bottom of the counterbalance valve mounting hole and is connected to the second process channel; the counterbalance valve oil return port is located in the middle of the counterbalance valve mounting hole and is connected to the fourth working oil channel; the counterbalance valve control oil port is located at the front end of the counterbalance valve mounting hole and is connected to the third process channel.

[0015] The valve main oil inlet passage is connected with the solenoid valve oil inlet cavity, and the valve main oil return passage is connected with the solenoid valve oil return cavity.

[0016] Beneficial effects of the utility model:

[0017] The utility model discloses a combination valve for quickly assisting the cylinder lifting of a rubber plate vulcanizer, comprising a valve body, an electromagnetic reversing valve arranged on the valve body, a counter-balance valve, plugs arranged on the ports of each oil channel and process channel on the valve body, and a fixed bracket for installing the combination valve. The valve body is an integrally formed part, and its structural features integrate the mounting structure and oil channel of the electromagnetic reversing valve, the mounting structure and oil channel of the counter-balance valve, and the oil channel of the docking hydraulic cylinder. The combination valve integrates the functions of the electromagnetic reversing valve and the counter-balance valve, eliminating the drawbacks caused by multiple process oil channels, large pipeline pressure loss, high hydraulic power loss, high temperature under high-speed operation, and unsatisfactory heat dissipation control. The combination valve reduces the overall weight of the valve block, makes the valve group more flexible and compact when installed on the equipment, reduces the manufacturing cost, and makes the actuator move faster and more stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the following specifically cites preferred embodiments and cooperates with the attached drawings, but the embodiments in the drawings do not constitute any limitation of the present invention. For ordinary technicians in this field, other drawings can be obtained according to the following drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure;

[0020] Figure 2It is a schematic diagram of the valve body structure;

[0021] Figure 3 for Figure 2 Bottom view;

[0022] Figure 4 for Figure 2 Main view;

[0023] Figure 5 for Figure 2 Top view;

[0024] Figure 6 for Figure 4 Section view along DD;

[0025] Figure 7 for Figure 4 Section view along BB;

[0026] Figure 8 for Figure 5 Section view along CC;

[0027] Fig. 9 for Figure 4 Section view along HH;

[0028] Fig.10 for Figure 1 Main view;

[0029] Fig.11 for Figure 1 Top view;

[0030] Fig.12 for Fig.10 Section view along GG;

[0031] Fig.13 for Fig.11 Sectional view along EE;

[0032] Fig.14 for Fig.10 Section view along FF;

[0033] Fig.15 for Fig.10 Sectional view along II;

[0034] Fig.16 This is a schematic diagram of the application of the combination valve in the embodiment.

[0035] In the figure: 1-valve body, 101-valve total oil inlet channel, 102-valve total oil return channel, 103-solenoid valve core insertion hole, 1031-solenoid valve oil inlet cavity, 1032-solenoid valve oil return cavity, 1033-first cavity, 1034-second cavity, 104-counterbalance valve insertion hole, 105-first working oil channel, 106-second working oil channel, 107-first process channel, 108-third working oil channel, 109-fourth process channel Working oil channel, 110-second process channel, 111-third process channel, 112-bracket fixing hole, 113-first cylinder, 114-rectangular structure, 116-fourth cylinder, 117-fifth cylinder, 118-base, 2-electromagnetic reversing valve, 201-electromagnetic valve core, 3-counterbalancing valve, 301-oil inlet of counterbalancing valve, 302-oil return port of counterbalancing valve, 303-control oil port of counterbalancing valve, 4-fixed bracket, 5-plug. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0037] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings attached to this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present invention can be implemented. Therefore, they have no substantive technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0038] like Figure 1 , Fig.10 , Fig.11 As shown, a combination valve for quickly assisting the lifting of a cylinder of a rubber plate vulcanizer includes a valve body 1, an electromagnetic reversing valve 2 arranged on the valve body 1, a counterbalance valve 3, plugs 5 arranged at the ports of each oil channel and process channel on the valve body 1, and a fixing bracket 4 for installing the combination valve.

[0039] like Figures 2 to 5As shown, the valve body 1 is an integrally formed part, and the valve body 1 includes a rectangular parallelepiped structure 114, which is located above the valve body 1, and the four vertical edges are arc-shaped. A first cylinder 113 is arranged in the middle of the length direction of the rectangular parallelepiped structure 114, and the first cylinder 113 and the rectangular parallelepiped structure 114 are symmetrically arranged crosswise. The first cylinder 113 is provided with an electromagnetic valve core insertion hole 103 along the axis, and the electromagnetic valve core insertion hole 103 is a standard electromagnetic valve core hole, and the electromagnetic valve core insertion hole 103 is used to set the electromagnetic reversing valve 2. The valve total oil inlet channel 101 and the valve total oil return channel 102 are vertically arranged on both sides of the top surface of the rectangular parallelepiped structure 114, and the valve total oil inlet channel 101 and the valve total oil return channel 102 are respectively arranged on both sides of the first cylinder 113 along the axis.

[0040] like Figure 6 As shown, the solenoid valve core insertion hole 103 is the installation hole of the solenoid valve core 201. The solenoid valve core insertion hole 103 is a penetrating circular through hole, and a plurality of annular channels are arranged inside, including a solenoid valve oil inlet cavity 1031, a solenoid valve oil return cavity 1032, a first cavity 1033, and a second cavity 1034. The solenoid valve oil inlet cavity 1031 is arranged in the middle of the solenoid valve core insertion hole 103, the first cavity 1033 is arranged on the left side of the solenoid valve oil inlet cavity 1031, and the second cavity 1034 is arranged on the right side of the solenoid valve oil inlet cavity 1031. The solenoid valve oil return cavity 1032 is provided with two groups, which are respectively on both sides of the first cavity 1033 and the second cavity 1034, and are connected by an arc channel. The valve main oil inlet passage 101 is communicated with the solenoid valve oil inlet cavity 1031 inside the solenoid valve core insertion hole 103 , and the valve main oil return passage 102 is communicated with the solenoid valve oil return cavity 1032 inside the solenoid valve core insertion hole 103 .

[0041] like Figures 2 to 5 As shown, the fourth cylinder 116 is arranged below the first cylinder 113, the fourth cylinder 116 and the first cylinder 113 are arranged perpendicular to each other, and the outer edge of the fourth cylinder 116 is substantially flush with one end face of the first cylinder 113, and the fourth cylinder 116 is provided with a counterbalance valve insertion hole 104 along the axis, and the counterbalance valve insertion hole 104 is used to set the counterbalance valve 3. A fifth cylinder 117 is arranged on the other side of the fourth cylinder 116, and the fifth cylinder 117 is located in the middle of the fourth cylinder 116, and the outer edge of the fifth cylinder 117 is flush with the other end face of the first cylinder 113. A base 118 is arranged below the fourth cylinder 116 and the fifth cylinder 117.

[0042] like Figure 2 , Figure 8As shown, a third working oil channel 108 and a fourth working oil channel 109 are provided in the valve body 1, and the starting ends of the third working oil channel 108 and the fourth working oil channel 109 are connected to the electromagnetic valve core insertion hole 103, the third working oil channel 108 is connected to the second cavity 1034, and the fourth working oil channel 109 is connected to the first cavity 1033. The third working oil channel 108 and the fourth working oil channel 109 are arranged to penetrate downward, the third working oil channel 108 is vertically arranged in the fifth cylinder 117 and penetrates to the base 118, and the fourth working oil channel 109 is vertically arranged in the fourth cylinder 116, penetrates the counterbalance valve insertion hole 104, and penetrates to the base 118.

[0043] like Figure 2 As shown, the side of the base 118 is penetrated by a first working oil channel 105 and a second working oil channel 106, and the axis direction of the first working oil channel 105 and the second working oil channel 106 is perpendicular to the axis of the counterbalance valve insertion hole 104. The first working oil channel 105 is located below the opening of the counterbalance valve insertion hole 104, and the second working oil channel 106 is located below the bottom of the counterbalance valve insertion hole 104.

[0044] like Figure 2 , Fig. 9 As shown, the other side of the base 118 is provided with a first process channel 107, and the port of the first process channel 107 is on the same side as the port of the counterbalance valve insertion hole 104 provided on the fourth cylinder 116. The first process channel 107 runs through the first working oil channel 105 and is connected to the third working oil channel 108.

[0045] like Figure 3 , Figure 7 , Fig. 9 As shown, the bottom of the base 118 is also provided with a bracket fixing hole 112, a second process channel 110, and a third process channel 111. The bracket fixing hole 112 is used to install and connect the fixed bracket 4, and the number of the bracket fixing holes 112 matches the number of connection holes on the fixed bracket 4. The third process channel 111 is vertically arranged upward from the bottom of the base 118 and is connected to the first working oil channel 105 and the counterbalance valve insertion hole 104. The second process channel 110 is vertically arranged upward from the bottom of the base 118, passes through the second working oil channel 106, and is connected to the bottom of the counterbalance valve insertion hole 104.

[0046] like Figure 2 As shown, the connections between the first cylinder 113, the cuboid structure 114, the fourth cylinder 116, the fifth cylinder 117, and the base 118 are arc-shaped, which is more beautiful and more in line with the part modeling requirements of the one-piece molded part.

[0047] like Figure 1 , Figures 10 to 14As shown, the inlet end of the valve total oil inlet channel 101 is the oil inlet channel port P of the valve body, which is connected to the oil inlet channel port of the electromagnetic reversing valve 2, and the valve total oil return channel 102 is the oil return channel port T of the valve body, which is connected to the oil return channel port of the electromagnetic reversing valve 2. The two ends of the first working oil channel 105 are the oil inlet ports A1 and A2 of the valve body for the hydraulic system, corresponding to the oil inlet of the hydraulic cylinder; the second working oil channel 106 is the oil return ports B1 and B2 of the valve body for the hydraulic system, corresponding to the oil return port of the hydraulic cylinder.

[0048] like Figure 1 , Figures 10 to 13 As shown, after the electromagnet is energized, the solenoid valve core 201 of the solenoid reversing valve 2 pushes the solenoid valve core 201 to move left and right in the solenoid valve core insertion hole 103, switching the oil circuit on and off to achieve the function of reversing. When the solenoid valve core 201 is in the middle position, the P port is closed, and the T port is connected to each oil circuit: the valve total oil return channel 102 is connected to the first cavity 1033, the fourth working oil channel 109, and the second working oil channel 106; the valve total oil return channel 102 is connected to the second cavity 1034, the third working oil channel 108, and the first working oil channel 105. When the solenoid valve core 201 moves to the right, the valve main oil inlet channel 101, the solenoid valve oil inlet chamber 1031, the second chamber 1034, the third working oil channel 108, and the first working oil channel 105 are connected; the valve main oil return channel 102, the solenoid valve oil return chamber 1032, the first chamber 1033, the fourth working oil channel 109, and the second working oil channel 106 are connected, and the hydraulic oil enters from the connecting oil circuit of the P-port valve main oil inlet channel 101 and returns from the connecting oil circuit of the T-port valve main oil return channel 102. When the solenoid valve core 201 moves to the left, the valve main oil inlet channel 101, the solenoid valve oil inlet chamber 1031, the first chamber 1033, the fourth working oil channel 109, and the second working oil channel 106 are connected; the valve main oil return channel 102, the solenoid valve oil return chamber 1032, the second chamber 1034, the third working oil channel 108, and the first working oil channel 105 are connected, and the hydraulic oil enters from the connecting oil circuit of the P-port valve main oil inlet channel 101 and returns from the connecting oil circuit of the T-port valve main oil return channel 102.

[0049] like Fig.14 , Fig.15As shown, the counterbalance valve insertion hole 104 is a counterbalance valve installation hole, and forms three groups of oil ports with the counterbalance valve 3 that is matched and inserted inside, including the counterbalance valve oil inlet 301, the counterbalance valve oil return port 302, and the counterbalance valve control oil port 303. The counterbalance valve oil inlet 301 is located at the bottom of the counterbalance valve insertion hole 104 and is connected to the second process channel 110; the counterbalance valve oil return port 302 is located in the middle of the counterbalance valve insertion hole 104 and is connected to the fourth working oil channel 109; the counterbalance valve control oil port 303 is located at the front end of the counterbalance valve insertion hole 104 and is connected to the third process channel 111. Under the action of the oil inlet pressure and the oil return pressure, the valve core of the counterbalance valve 3 moves, realizing the on-off of the oil circuit and maintaining the stability of the workbench action.

[0050] In this embodiment, the combination valve is used to control the up and down movement of two groups of fast auxiliary hydraulic cylinders of the rubber plate vulcanizer to ensure that the workbench can be quickly lifted and lowered.

[0051] like Fig.16 As shown, the two working oil passages of the combined valve are: one working oil passage is: the second chamber 1034, the third working oil passage 108, and the first working oil passage 105, wherein the third working oil passage 108 is connected to the counterbalance valve control oil port 303 through the first process hole 107, the first working oil passage 105, and the third process hole 111, wherein the two ports A1 and A2 of the first working oil passage 105 are respectively connected to the oil inlet of the hydraulic cylinder. The other working oil passage is: the first chamber 1033, the fourth working oil passage 109, and the second working oil passage 106, wherein the fourth working oil passage 109 is connected to the counterbalance valve oil return port 302, and the second working oil passage 106 is connected to the counterbalance valve oil inlet 301 through the second process hole 110, wherein the two ports B1 and B2 of the second working oil passage 106 are respectively connected to the oil return port of the hydraulic cylinder.

[0052] When the solenoid valve core 201 is in the middle position, the P port is closed, and the T port is connected to each oil path: the valve total oil return channel 102 is connected to the first cavity 1033, the fourth working oil channel 109, and the second working oil channel 106; the valve total oil return channel 102 is connected to the second cavity 1034, the third working oil channel 108, and the first working oil channel 105. The oil paths in the counterbalance valve 3 are not connected to each other, the leakage between the oil inlet channel and the oil return channel is minimal, the pressure maintenance effect is very good, and the stability of the hydraulic cylinder is guaranteed.

[0053] When the solenoid valve core 201 moves to the left, the hydraulic oil enters the solenoid valve oil inlet channel 1031 from the P-port valve total oil inlet channel 101, enters the first channel 1033 through the valve core step, and then enters the fourth working oil channel 109. The fourth working oil channel 109 is connected to the counterbalance valve oil return port 302, communicates with the counterbalance valve oil inlet port 301 through the one-way valve in the counterbalance valve, and then enters the second working oil channel 106 through the second process channel 110. The hydraulic oil enters the lower chamber of the hydraulic cylinder through the two ends B1 and B2 of the second working oil channel 106 to extend the piston rod of the hydraulic cylinder. At the same time, the hydraulic oil in the upper chamber of the hydraulic cylinder enters the first working oil channel 105 from the two ports A1 and A2, enters the third oil inlet channel 108 through the first process hole 107, and then enters the second channel 1034, and then enters the solenoid valve oil return channel 1032 through the valve core step, and returns to the external oil circuit system from the T-port valve total oil return channel 102.

[0054] When the solenoid valve core 201 moves to the right, the hydraulic oil enters the solenoid valve oil inlet channel 1031 from the P-port valve main oil inlet channel 101, enters the second channel 1034 through the valve core step, and enters the third working oil channel 108. It is divided into two paths through the third working oil channel 108, one path enters the counterbalancing valve control oil port 303 of the counterbalancing valve 3, and the other path enters the first working oil channel 105, and enters the upper chamber of the hydraulic cylinder through the two ports A1 and A2 of the first working oil channel 105, pushing the piston rod of the hydraulic cylinder to retract. At the same time, the hydraulic oil in the lower chamber of the hydraulic cylinder enters the second working oil channel 106 from the two ports B1 and B2, and is connected to the oil inlet 301 of the counter-balancing valve through the second working oil channel 106 and the second process channel 110. The fourth working oil channel 109 is connected to the oil return port 302 of the counter-balancing valve. The valve core position of the counter-balancing valve is pushed by the pressure at the control oil port 303 to connect the second working oil channel 106 and the fourth working oil channel 109. The hydraulic oil returns to the first chamber 1033 through the fourth working oil channel 109, and then returns to the return oil chamber 1032 through the valve core step, and enters the external oil circuit system from the T-port valve total oil return channel 102.

Claims

1. A combination valve for quickly assisting the lifting and lowering of a cylinder of a rubber plate vulcanizing machine, comprising a valve body (1), an electromagnetic reversing valve (2) arranged on the valve body (1), a counterbalance valve (3), plugs (5) arranged at the ports of each oil channel and process channel on the valve body (1), and a fixing bracket (4) for installing the combination valve, characterized in that: The valve body (1) comprises a rectangular parallelepiped structure (114), the rectangular parallelepiped structure (114) being located above the valve body (1), the four vertical edges of which are arc-shaped, a first cylinder (113) being arranged in the middle of the length direction of the rectangular parallelepiped structure (114), the first cylinder (113) and the rectangular parallelepiped structure (114) being arranged symmetrically and cross-arranged; the first cylinder (113) is provided with an electromagnetic valve core insertion hole (103) along the axis; a valve main oil inlet channel (101) and a valve main oil return channel (102) are arranged vertically on both sides of the top surface of the rectangular parallelepiped structure (114), the valve main oil inlet channel (101) , and the valve total oil return channel (102) are respectively arranged on both sides of the first cylinder (113) along the axis; a fourth cylinder (116) is arranged below the first cylinder (113), and the fourth cylinder (116) and the first cylinder (113) are arranged perpendicular to each other, and the fourth cylinder (116) is provided with a counterbalance valve insertion hole (104) along the axis; a fifth cylinder (117) is arranged on the other side of the fourth cylinder (116), and the fifth cylinder (117) is located in the middle of the fourth cylinder (116); and a base (118) is arranged below the fourth cylinder (116) and the fifth cylinder (117).

2. The combined valve for rapid auxiliary cylinder lifting of a rubber plate vulcanizing machine according to claim 1, characterized in that: The solenoid valve core insertion hole (103) is a through circular through hole, and a plurality of annular channels are arranged inside, including a solenoid valve oil inlet cavity (1031), wherein the solenoid valve oil inlet cavity (1031) is arranged in the middle of the solenoid valve core insertion hole (103), the first cavity (1033) is arranged on the left side of the solenoid valve oil inlet cavity (1031), the second cavity (1034) is arranged on the right side of the solenoid valve oil inlet cavity (1031), and the solenoid valve oil return cavity (1032) is provided with two groups, respectively on both sides of the first cavity (1033) and the second cavity (1034), and the two groups of solenoid valve oil return cavities (1032) are connected.

3. The combined valve for rapid auxiliary cylinder lifting of a rubber plate vulcanizing machine according to claim 2, characterized in that: A third working oil channel (108) and a fourth working oil channel (109) are also provided in the valve body (1). The starting ends of the third working oil channel (108) and the fourth working oil channel (109) are connected to the solenoid valve core insertion hole (103). The third working oil channel (108) is connected to the second cavity (1034). The fourth working oil channel (109) is connected to the first cavity (1033). The third working oil channel (108) and the fourth working oil channel (109) are arranged to penetrate downward from the starting position. The third working oil channel (108) is arranged vertically in the fifth cylinder (117) and penetrates to the base (118). The fourth working oil channel (109) is arranged vertically in the fourth cylinder (116), penetrates the counterbalance valve insertion hole (104), and penetrates to the base (118).

4. The combined valve for rapid auxiliary cylinder lifting of a rubber plate vulcanizing machine according to claim 1, characterized in that: A first working oil passage (105) and a second working oil passage (106) are provided through the side surface of the base (118); the axes of the first working oil passage (105) and the second working oil passage (106) are perpendicular to the axis of the counterbalance valve insertion hole (104); the first working oil passage (105) is located below the opening of the counterbalance valve insertion hole (104); and the second working oil passage (106) is located below the bottom of the counterbalance valve insertion hole (104).

5. The combined valve for rapid auxiliary cylinder lifting of a rubber plate vulcanizing machine according to claim 1, characterized in that: A first process channel (107) is provided on the other side of the base (118); a port of the first process channel (107) and a port of a counterbalance valve insertion hole (104) provided on the fourth cylinder (116) are on the same side; the first process channel (107) runs through the first working oil channel (105) and is in communication with the third working oil channel (108).

6. The combined valve for rapid auxiliary cylinder lifting of a rubber plate vulcanizing machine according to claim 1, characterized in that: The bottom of the base (118) is also provided with a bracket fixing hole (112), a second process channel (110), and a third process channel (111); the bracket fixing hole (112) matches the connection hole on the fixing bracket (4); the third process channel (111) is vertically arranged upward to communicate with the first working oil channel (105) and the counterbalance valve insertion hole (104); the second process channel (110) is vertically arranged upward from the bottom of the base (118), passes through the second working oil channel (106), and is connected to the bottom of the counterbalance valve insertion hole (104).

7. The combined valve for rapid auxiliary cylinder lifting of a rubber plate vulcanizing machine according to claim 1, characterized in that: The valve body (1) is an integrally formed part, and the interconnections between the first cylinder (113), the rectangular structure (114), the fourth cylinder (116), the fifth cylinder (117), and the base (118) are arc-shaped.

8. The combined valve for rapid auxiliary cylinder lifting of a rubber plate vulcanizing machine according to claim 1, characterized in that: The counterbalance valve insertion hole (104) and the counterbalance valve (3) inserted therein form three groups of oil ports, the three groups of oil ports comprising a counterbalance valve oil inlet (301), a counterbalance valve oil return port (302), and a counterbalance valve control oil port (303); the counterbalance valve oil inlet (301) is located at the bottom of the counterbalance valve insertion hole (104) and is connected to the second process channel (110); the counterbalance valve oil return port (302) is located in the middle of the counterbalance valve insertion hole (104) and is connected to the fourth working oil channel (109); the counterbalance valve control oil port (303) is located at the front end of the counterbalance valve insertion hole (104) and is connected to the third process channel (111).

9. The combined valve for rapid auxiliary cylinder lifting of a rubber plate vulcanizing machine according to claim 2, characterized in that: The valve main oil inlet channel (101) is connected to the solenoid valve oil inlet cavity (1031), and the valve main oil return channel (102) is connected to the solenoid valve oil return cavity (1032).

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