Rapid mold locking device

Abstract

The invention discloses a rapid mold locking device which comprises a mold locking rear fixing seat, a first mold movable mold plate and a second mold movable mold plate are arranged at the bottom end of the mold locking rear fixing seat, a mold locking hydraulic oil cylinder is arranged at the top end of the first mold movable mold plate, and auxiliary hydraulic oil cylinders are symmetrically arranged on the two sides of the mold locking hydraulic oil cylinder. A movable mold hydraulic oil cylinder is arranged at the bottom end of the second mold movable mold plate, a mold locking front fixing plate is arranged at the bottom end of the second mold movable mold plate, and a large-flow logic valve block is arranged on the front face of the mold locking hydraulic oil cylinder. Through the design of a mold locking hydraulic oil cylinder, a movable mold hydraulic oil cylinder, an auxiliary hydraulic oil cylinder, a first virtual oil cavity assembly, a second virtual oil cavity assembly and a large-flow logic valve block, a traditional hydraulic control mode is adopted, and the mode is simple in structure; by adopting the virtual hydraulic oil cylinder, a smaller power unit can be configured, so that mold locking is more efficient, and energy is saved; and after high-pressure hydraulic oil is injected into the first bar-free cavity, rapid mold locking can be completed.

Description

Technical Field

[0001] The invention relates to the field of mold locking devices, in particular to a rapid mold locking device. Background Art

[0002] At present, during the production and operation of injection molding machines and one-step blow molding machines, the mold is closed, locked and opened in a cycle. The hydraulic cylinder piston rod extends to complete mold closing, the hydraulic cylinder large cavity injects high pressure to complete mold locking, and the hydraulic cylinder piston rod retracts to complete mold opening. The number of mold cavities and the size of the product diameter need to match the corresponding clamping force. Under the same pressure, the greater the clamping force, the larger the cylinder diameter of the hydraulic cylinder is required.

[0003] Existing clamping device solutions: 1. Direct drive method using large-diameter hydraulic cylinders: The piston rod of the large-diameter hydraulic cylinder extends and retracts to complete the closing and opening of the mold, and high-pressure hydraulic oil is injected into the large cavity of the cylinder to complete the clamping. When a large clamping force is required, a large-diameter hydraulic cylinder is required to achieve it. The high-speed extension and retraction of the piston rod of the large-diameter hydraulic cylinder requires a large flow rate to ensure that a larger power unit must be matched at this time, such as a large-displacement main pump and a high-power motor, which will cause high energy consumption; 2. The extension and retraction of a small-diameter hydraulic cylinder is used to drive a large-diameter hydraulic cylinder. The piston rod of the large-diameter hydraulic cylinder is passively extended and retracted. Its main function is to clamp the mold. The top of the large-diameter hydraulic cylinder must be installed Install an oil tank, and install a filling valve between the large-diameter hydraulic cylinder and the oil tank: when the piston rod of the large-diameter hydraulic cylinder is passively extended, the filling valve opens, and the hydraulic oil inside the oil tank is passively replenished into the large-diameter hydraulic cylinder; when the piston rod of the large-diameter hydraulic cylinder is passively retracted, the filling valve opens, and the hydraulic oil is discharged from the large-diameter hydraulic cylinder into the oil tank. The disadvantage of this method is that when the piston rod is quickly extended, the hydraulic oil cannot be quickly replenished into the large-diameter hydraulic cylinder through the oil tank and the filling valve, resulting in a long high-pressure time after the injection of high-pressure hydraulic oil to complete the mold locking; 3. After the hydraulic cylinder is used to control the mechanical structure to hold the brake or latch, the high-pressure hydraulic oil is injected to lock the mold, resulting in the complex structure of this method.

[0004] The above existing mold locking technical solutions either need to be equipped with a large power unit, have high energy consumption, or have a long high pressure time from mold locking, or have a complex structure, which makes it impossible to achieve fast mold locking. Summary of the invention

[0005] The purpose of the present invention is to provide a rapid mold clamping device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rapid clamping device, comprising a rear clamping fixed seat, the bottom end of the rear clamping fixed seat is provided with a first mold movable platen and a second mold movable platen for injection molding, the top end of the first mold movable platen is provided with a clamping hydraulic cylinder for driving the first mold movable platen to move, auxiliary hydraulic cylinders are symmetrically provided on both sides of the clamping hydraulic cylinder, the bottom end of the second mold movable platen is provided with a movable mold hydraulic cylinder, the bottom end of the second mold movable platen is provided with a front clamping fixed plate for cooperating with the first mold movable platen and the second mold movable platen, and a large-flow logic valve block is provided on the front of the clamping hydraulic cylinder.

[0007] Preferably, a first through groove for installing the clamping hydraulic cylinder is formed at the top of the clamping rear fixed seat, second through grooves for installing the auxiliary hydraulic cylinder are symmetrically formed on both sides of the top of the clamping rear fixed seat, and first circular through grooves are symmetrically formed at both ends of the clamping rear fixed seat, and a clamping column is inserted and fixedly connected inside the first circular through groove.

[0008] Preferably, second circular through grooves are symmetrically provided on both sides of the top of the front fixed plate of the clamping mold, the inner wall of the second circular through groove is fixedly connected to the outer wall of the bottom of the clamping mold column, and third circular through grooves and fourth circular through grooves are respectively provided at both ends of the first mold movable template and the second mold movable template, and the third circular through grooves and the fourth circular through grooves are respectively interlaced and connected with the clamping mold column.

[0009] Preferably, third through grooves for installing a movable mold hydraulic cylinder are symmetrically provided at both ends of the clamping front fixed plate, and the output end of the movable mold hydraulic cylinder is fixedly connected to the bottom end of the movable mold plate of the second mold.

[0010] Preferably, the locking hydraulic cylinder includes a first virtual oil chamber assembly, the first virtual oil chamber assembly includes a first cylinder body, a first barless chamber and a first bar chamber are provided inside the first cylinder body, a first piston rod is inserted and connected inside the first cylinder body, a sub-cylinder body is provided on the top of the first piston rod, a sub-cylinder piston rod is inserted and connected inside the sub-cylinder body, and the bottom end of the first piston rod is fixedly connected to the top end of the first mold movable platen.

[0011] Preferably, the auxiliary hydraulic cylinder includes a second cylinder body, a second barless chamber and a second bar chamber are provided inside the second cylinder body, a second piston rod is inserted and connected inside the second cylinder body, and the bottom end of the second piston rod is fixedly connected to the top end of the first mold movable platen.

[0012] Preferably, the large-flow logic valve block is provided with a second virtual oil chamber assembly and a P port, the second virtual oil chamber assembly includes an A port and a B port, the A port and the B port are through-connected, the A port is provided with a first oil circuit channel for connecting to a first leverless chamber, and the B port is provided with a second oil circuit channel for connecting to a first lever-equipped chamber.

[0013] Technical effects and advantages of the present invention:

[0014] (1) Through the design of the first mold movable platen, the second mold movable platen, the clamping hydraulic cylinder and the movable mold hydraulic cylinder, the traditional hydraulic control method is adopted to realize the opening, closing and clamping of the mold. This method has a simple structure and is easy to maintain;

[0015] (2) Through the design of the clamping hydraulic cylinder, the auxiliary hydraulic cylinder, the first virtual oil chamber assembly and the second virtual oil chamber assembly, and by adopting the control method of the virtual hydraulic cylinder, it is not necessary to configure a high-power main pump or a large-displacement main pump according to the clamping hydraulic cylinder, so that a smaller power unit can be configured to achieve rapid opening and closing of the mold, making the clamping more efficient and saving energy;

[0016] (3) Through the design of the clamping hydraulic cylinder, the auxiliary hydraulic cylinder and the large-flow logic valve block, when the first piston rod is extended, the first lever chamber and the second lever chamber can discharge the hydraulic oil to fill the first leverless chamber of the clamping hydraulic cylinder. When the first leverless chamber is injected with high-pressure hydraulic oil, it can achieve short-time pressure rise and complete rapid clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view structural schematic diagram of the present invention.

[0018] Figure 2 It is a schematic diagram of the front cross-sectional structure of the present invention.

[0019] Figure 3 It is the hydraulic principle diagram of the mold closing action of the present invention.

[0020] Figure 4 This is a hydraulic principle diagram of the clamping action of the present invention.

[0021] Figure 5 This is a hydraulic principle diagram of the mold quick opening action of the present invention.

[0022] Figure 6 This is the hydraulic principle diagram of the slow opening action of the mold of the present invention.

[0023] In the figure: 1. Fixing seat after mold clamping; 2. First mold movable platen; 3. Second mold movable platen; 4. Fixing plate before mold clamping; 5. Locking column; 6. Locking hydraulic cylinder; 61. First piston rod; 62. First cylinder body; 63. First barless cavity; 64. First barred cavity; 65. Sub-cylinder body; 66. Sub-cylinder piston rod; 7. Auxiliary hydraulic cylinder; 71. Second piston rod; 72. Second cylinder body; 73. Second barless cavity; 74. Second barred cavity; 8. Large flow logic valve block; 9. First oil channel; 10. Second oil channel; 11. Moving mold hydraulic cylinder. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] The present invention provides Figure 1-2 A rapid clamping device is shown, comprising a clamping rear fixed seat 1, the bottom end of which is provided with a first mold movable platen 2 and a second mold movable platen 3 for injection molding, the top of the first mold movable platen 2 is provided with a clamping hydraulic cylinder 6 for driving the first mold movable platen 2 to move, auxiliary hydraulic cylinders 7 are symmetrically provided on both sides of the clamping hydraulic cylinder 6, a movable mold hydraulic cylinder 11 is provided at the bottom end of the second mold movable platen 3, a clamping front fixed plate 4 for cooperating with the first mold movable platen 2 and the second mold movable platen 3 is provided at the bottom end of the second mold movable platen 3, and a large-flow logic valve block 8 is provided on the front of the clamping hydraulic cylinder 6.

[0026] Specifically, a first through groove for installing the locking hydraulic cylinder 6 is provided at the top of the rear locking fixed seat 1, and second through grooves for installing the auxiliary hydraulic cylinder 7 are symmetrically provided on both sides of the top of the rear locking fixed seat 1, and first circular through grooves are symmetrically provided at both ends of the rear locking fixed seat 1, and a locking Coring column 5 is inserted and fixedly connected inside the first circular through groove, and second circular through grooves are symmetrically provided on both sides of the top of the front locking fixed plate 4, and the inner wall of the second circular through groove is fixedly connected to the outer wall of the bottom of the locking Coring column 5, and a third circular through groove and a fourth circular through groove are respectively provided at both ends of the first mold movable template 2 and the second mold movable template 3, and the third circular through groove and the fourth circular through groove are respectively inserted and connected with the locking Coring column 5, and third through grooves for installing the movable mold hydraulic cylinder 11 are symmetrically provided at both ends of the front locking fixed plate 4, and the output end of the movable mold hydraulic cylinder 11 is fixedly connected to the bottom end of the second mold movable template 3.

[0027] Further, the mold locking column 5 is installed between the two ends of the mold locking rear fixing seat 1 and the mold locking front fixing plate 4, the mold locking rear fixing seat 1 and the mold locking front fixing plate 4 are fixed, and a mold locking hydraulic cylinder 6 and two auxiliary hydraulic cylinders 7 are arranged on the mold locking rear fixing seat 1. The mold locking hydraulic cylinder 6 and the auxiliary hydraulic cylinder 7 are installed in the axial direction of the mold locking column 5. The sizes of the first circular through groove and the second circular through groove match the sizes of the mold locking column 5. Through the third circular through groove, the first mold movable plate 2 is extended and retracted toward the axial direction of the mold locking column 5 by the second piston rod 71 and the first piston rod 61, and the first mold movable plate 2 is driven to move in the axial direction of the mold locking column 5. The second mold movable template 3 is arranged between the first mold movable template 2 and the front fixed plate 4 of the clamping mold. The end of the second mold movable template 3 is installed on the clamping mold column 5. The movement of the second mold movable template 3 is independent of the first mold movable template 2. Another movable mold hydraulic cylinder 11 is required to provide power to move the second mold movable template 3 in the axial direction of the clamping mold column 5. The clamping mold column 5 is generally set to two, but not limited to two, and multiple can be set. The first mold movable template 2, the second mold movable template 3 and the front fixed plate 4 of the clamping mold are respectively provided with molds, which together constitute a complete set of complete molds. The first mold movable template 2 and the second mold movable template 3 are combined into a complete set of mold movable templates.

[0028] Specifically, the clamping hydraulic cylinder 6 includes a first virtual oil chamber assembly, which includes a first cylinder body 62, a first barless chamber 63 and a first bar chamber 64 are provided inside the first cylinder body 62, a first piston rod 61 is inserted into the first cylinder body 62, a sub-cylinder body 65 is provided on the top of the first piston rod 61, a sub-cylinder rod 66 is inserted into the sub-cylinder body 65, and the bottom end of the first piston rod 61 is fixedly connected to the top end of the first mold movable plate 2. The auxiliary hydraulic cylinder 7 includes a second cylinder body 72, and the second cylinder A second barless chamber 73 and a second barred chamber 74 are provided inside the body 72, a second piston rod 71 is inserted into the inside of the second cylinder body 72, the bottom end of the second piston rod 71 is fixedly connected to the top end of the first mold movable template 2, the large-flow logic valve block 8 is provided with a second virtual oil chamber assembly and a P port, the second virtual oil chamber assembly includes an A port and a B port, the A port and the B port are through-connected, the A port is provided with a first oil circuit channel 9 for connecting to the first barless chamber 63, the B port is provided with a second oil circuit channel 10 for connecting to the first barred chamber 64.

[0029] Furthermore, the clamping hydraulic cylinder 6 is a sub-parent type hydraulic cylinder, the sub-cylinder is arranged in the first piston rod 61, and the sub-cylinder piston rod 66 is fixedly installed on the rear end cover of the clamping hydraulic cylinder 6. The hydraulic oil pressure difference between the effective working area of ​​the first barless chamber 63 and the first barless chamber 63 and the first bar chamber 64 forms a clamping force. The effective working surface of the sub-cylinder body 65 and the injection of high-pressure hydraulic oil form a force to drive the first piston rod 61 to extend. The first virtual oil chamber assembly and the second virtual oil chamber assembly form a virtual hydraulic cylinder. The auxiliary hydraulic cylinder 7 is generally two, but not limited to two. The auxiliary hydraulic cylinder 7 is a single-acting hydraulic cylinder, and its second bar chamber 74 is connected to the atmosphere. The sub-cylinder body 65 inside the clamping hydraulic cylinder 6 serves as the first virtual hydraulic cylinder. An oil chamber, by controlling the control P port of the large flow logic valve block 8, the large flow logic valve block 8 is in an open state. When the A port and the B port are connected, as the second oil chamber of the virtual hydraulic cylinder, the large flow logic valve block 8 is provided with a logic valve or a one-way valve with a two-way closing and locking function and a two-way connecting function. The A port and the B port of the channel of the large flow logic valve block 8 are connected to each other, that is, by adjusting the pressure of the control P port, the logic valve inside the large flow logic valve block 8 is opened. At this time, the A port and the B port of the channel of the large flow logic valve block 8 are connected to each other, and the hydraulic oil can flow from the A port of the channel of the large flow logic valve block 8 to the B port or from the B port of the channel of the large flow logic valve block 8 to the A port, that is, by adjusting the pressure of the control P port, the large flow logic valve is closed. , so that the channel A port and the B port of the large flow logic valve block 8 are disconnected. At this time, the large flow logic valve block 8 realizes the two-way valve function of two-way locking. The large flow logic valve block 8 generally adopts an external installation method and is set outside the locking hydraulic cylinder 6, or adopts an embedded installation method and is set inside the first piston rod 61 and the first cylinder body 62. The large flow logic valve block 8 is set between the first barless chamber 63 and the first bar-equipped chamber 64. The first oil circuit channel 9 connects the channel A port of the large flow logic valve block 8 with the first barless chamber 63 of the locking hydraulic cylinder 6, and the second oil circuit channel 10 connects the channel B port of the large flow logic valve block 8 with the first bar-equipped chamber 64 of the locking hydraulic cylinder 6 and the second bar-equipped chamber 74 of the auxiliary hydraulic cylinder 7, forming An isobaric space, the sum of the effective action areas of the first lever cavity 64 of the locking hydraulic cylinder 6 and the second lever cavity 74 of the auxiliary hydraulic cylinder 7 is greater than the effective action area of ​​the first leverless cavity 63 of the locking hydraulic cylinder 6, the first oil chamber of the virtual hydraulic cylinder is injected with high-pressure hydraulic oil, and the second oil chamber of the virtual hydraulic cylinder is controlled to discharge the hydraulic oil, so that the piston rods of the locking hydraulic cylinder 6 and the auxiliary hydraulic cylinder 7 are extended, and the first mold movable plate 2 is driven to move and the mold is quickly closed, the second oil chamber of the virtual hydraulic cylinder is injected with high-pressure hydraulic oil, and the first oil chamber of the virtual hydraulic cylinder is controlled to discharge the hydraulic oil, so that the piston rods of the locking hydraulic cylinder 6 and the auxiliary hydraulic cylinder 7 are retracted, and the first mold movable plate 2 is driven to move and the mold is quickly opened.

[0030] When the fast clamping device is in operation, the specific steps are mold closing, clamping, and mold opening cycles. Figure 3-Figure 6 , and is described in detail in combination with the hydraulic principle steps as follows:

[0031] Step 1: Close the mold, refer to the hydraulic action principle Figure 3 That is, the first piston rod 61 and the second piston rod 71 extend out, driving the first mold movable template 2 to move in the axial direction of the locking mold column 5 to complete the mold closing, and the sub-cylinder body 65 injects high-pressure hydraulic oil to form a positive force in the axial direction of the locking mold column 5, acting on the first piston rod 61, and at the same time controlling the control P port of the large-flow logic valve block 8, so that the B port of the large-flow logic valve block 8 is connected to the A port. In this process, a large amount of hydraulic oil flows out from the first lever cavity 64 and the second lever cavity 74, and passes through the second oil circuit channel 10, the large-flow logic valve block 8, and the first oil circuit channel 9 in turn, and is replenished to the first barless cavity 63. At the end of the first barless cavity 63, the excess hydraulic oil is controlled to be removed, that is, the first piston rod 61 is quickly extended, and the second piston rod 71 is passively extended, driving the first mold movable template 2 to move and quickly close the mold. At this time, the hydraulic oil in the first lever cavity 64 and the second lever cavity 74 is discharged and fills the first barless cavity 63. The first barless cavity 63 is always in a full oil state.

[0032] Step 2: Clamping, hydraulic principle reference Figure 4 That is, the first lever chamber 64 is connected to the oil tank, the first leverless chamber 63 is injected with high-pressure hydraulic oil, and the control P port of the large-flow logic valve block 8 is controlled to make the large-flow logic valve block 8 in a bidirectional locking state. At this time, the first leverless chamber 63 and the first lever chamber 64 form a pressure difference to provide locking force.

[0033] Step 3: Mold opening, hydraulic action principle reference Figure 5 , that is, the first piston rod 61 and the second piston rod 71 retract, driving the first mold movable template 2 to move in the axial direction of the locking mold column 5, completing the mold opening, and injecting high-pressure hydraulic oil into the first lever cavity 64, while controlling the P port of the large-flow logic valve block 8 to connect the A port and the B port of the large-flow logic valve block 8, and controlling the sub-cylinder body 65 to be connected to the oil tank. In this process, a large amount of hydraulic oil is replenished from the first leverless cavity 63 through the first oil circuit channel 9, the large-flow logic valve block 8, and the second oil circuit channel 10 to the first lever cavity 64 and the second lever cavity 74.

[0034] In addition, when the mold opening requires a large ejection force or slow control, the hydraulic action principle refers to Figure 6, control the P port of the large-flow logic valve block 8 to make the large-flow logic valve block 8 in a bidirectional locked state, and inject high-pressure hydraulic oil into the second lever chamber 74. The first lever chamber 64 and the second lever chamber 74 jointly generate a force to drive the first mold moving template 2 to move in the axial direction of the locking mold column 5 to complete the mold opening. In this process, the first lever chamber 64 is injected with high-pressure hydraulic oil, and the first leverless chamber 63 and the sub-cylinder body 65 are connected to the oil tank.

[0035] In the above process, the locking hydraulic cylinder 6 and the auxiliary hydraulic cylinder 7 together constitute a virtual hydraulic cylinder. The extension and retraction of the first piston rod 61 and the second piston rod 71 do not need to be configured with a high-power main pump or a large-displacement main pump according to the locking hydraulic cylinder 6. By configuring a smaller power unit, the mold can be easily opened and closed quickly, which is more efficient and has lower energy consumption. When the first piston rod 61 is extended, the first bar cavity 64 and the second bar cavity 74 discharge hydraulic oil to fill the first barless cavity 63. After the first barless cavity 63 is injected with high-pressure hydraulic oil, it can be pressurized in a short time to complete rapid locking.

[0036] The specifications of the clamping hydraulic cylinder, sub-cylinder body and auxiliary hydraulic cylinder in the embodiment are shown in Table 1.

[0037] Cylinder diameter (mm) Piston rod outer diameter (mm) Stroke(mm) Clamping hydraulic cylinder 228 120 600 sub-cylinder 60 58 600 Auxiliary hydraulic cylinder 110 68 600

[0038] Table 1

[0039] In the embodiment, there is one clamping hydraulic cylinder, one sub-cylinder body, and two auxiliary hydraulic cylinders, and the volume calculation is shown in Table 2.

[0040]

[0041] Table 2

[0042] Combined with the above embodiments, according to the full stroke motion calculation and analysis of the clamping hydraulic cylinder: when the clamping hydraulic cylinder piston rod extends to drive the first mold moving plate to close the mold, the sub-cylinder in the clamping hydraulic cylinder piston rod is injected with 1.7L of high-pressure hydraulic oil, and the clamping hydraulic cylinder and the two auxiliary hydraulic cylinders have a bar cavity that discharges a total of 17.7+7=24.7L of hydraulic oil, and all of it is filled into the clamping hydraulic cylinder barless cavity. The clamping hydraulic cylinder discharges 24.7-22.9=1.8L of liquid Pressurize oil; when the piston rod of the mold locking hydraulic cylinder retracts and drives the first mold moving template to open the mold, the locking hydraulic cylinder's lever cavity is injected with high-pressure hydraulic oil, and the locking hydraulic cylinder's leverless cavity discharges 22.9L of hydraulic oil, and all of it is filled into the locking hydraulic cylinder and the two auxiliary hydraulic cylinders' lever cavities, that is, the locking hydraulic cylinder and the two auxiliary hydraulic cylinders' lever cavities only need to be injected with 24.7-22.9=1.8L of hydraulic oil, and the sub-cylinder body in the locking hydraulic cylinder piston rod discharges 1.7L of hydraulic oil. As can be seen from the above, in the present invention, the extension and retraction of the locking hydraulic cylinder piston rod can achieve high-speed movement without the use of a large-displacement main pump, which can be understood as follows: when the main pumps have the same displacement, the movement speed of closing or opening the mold is faster and more efficient; when the movement speed of closing or opening the mold is the same, the main pump that needs to be configured has a lower displacement.

[0043] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. 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 rapid mold clamping device, comprising a mold clamping rear fixing seat (1), characterized in that: The bottom end of the clamping rear fixed seat (1) is provided with a first mold movable platen (2) and a second mold movable platen (3) for injection molding, the top end of the first mold movable platen (2) is provided with a clamping hydraulic oil cylinder (6) for driving the first mold movable platen (2) to move, auxiliary hydraulic oil cylinders (7) are symmetrically provided on both sides of the clamping hydraulic oil cylinder (6), a movable mold hydraulic oil cylinder (11) is provided at the bottom end of the second mold movable platen (3), a clamping front fixed plate (4) for cooperating with the first mold movable platen (2) and the second mold movable platen (3) is provided at the bottom end of the second mold movable platen (3), and a large flow logic valve block (8) is provided on the front of the clamping hydraulic oil cylinder (6).

2. A rapid clamping device according to claim 1, characterized in that: The top of the mold locking rear fixing seat (1) is provided with a first through groove for installing a mold locking hydraulic cylinder (6), and the two sides of the top of the mold locking rear fixing seat (1) are symmetrically provided with second through grooves for installing an auxiliary hydraulic cylinder (7), and the two ends of the mold locking rear fixing seat (1) are symmetrically provided with first circular through grooves, and a mold locking column (5) is inserted and fixedly connected inside the first circular through groove.

3. A rapid clamping device according to claim 2, characterized in that: A second circular through groove is symmetrically provided on both sides of the top of the locking front fixed plate (4), the inner wall of the second circular through groove is fixedly connected to the outer wall of the bottom of the locking mold column (5), and a third circular through groove and a fourth circular through groove are respectively provided at both ends of the first mold movable plate (2) and the second mold movable plate (3), and the third circular through groove and the fourth circular through groove are respectively interlaced and connected with the locking mold column (5).

4. A rapid clamping device according to claim 1, characterized in that: The two ends of the clamping front fixed plate (4) are symmetrically provided with third through grooves for installing a movable mold hydraulic cylinder (11), and the output end of the movable mold hydraulic cylinder (11) is fixedly connected to the bottom end of the second mold movable platen (3).

5. A rapid clamping device according to claim 1, characterized in that: The locking hydraulic cylinder (6) includes a first virtual oil chamber assembly, which includes a first cylinder body (62), a first barless chamber (63) and a first bar chamber (64) are provided inside the first cylinder body (62), a first piston rod (61) is inserted into the inside of the first cylinder body (62), a sub-cylinder body (65) is provided on the top of the first piston rod (61), a sub-cylinder piston rod (66) is inserted into the inside of the sub-cylinder body (65), and the bottom end of the first piston rod (61) is fixedly connected to the top end of the first mold movable platen (2).

6. A rapid mold clamping device according to claim 1, characterized in that: The auxiliary hydraulic cylinder (7) includes a second cylinder body (72), the interior of the second cylinder body (72) is provided with a second lever-free chamber (73) and a second lever-supported chamber (74), the interior of the second cylinder body (72) is interlaced with a second piston rod (71), and the bottom end of the second piston rod (71) is fixedly connected to the top end of the first mold movable platen (2).

7. A rapid mold clamping device according to claim 1, characterized in that: The large-flow logic valve block (8) is provided with a second virtual oil chamber assembly and a P port, wherein the second virtual oil chamber assembly includes an A port and a B port, wherein the A port and the B port are through-connected, wherein the A port is provided with a first oil circuit channel (9) for connecting to a first leverless chamber (63), and the B port is provided with a second oil circuit channel (10) for connecting to a first lever-equipped chamber (64).

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