Die locking device of die casting machine

Abstract

The utility model discloses a die locking device of a die-casting machine, which belongs to the technical field of die-casting forming and comprises a fixed die plate, a pressurizing plate and a movable die plate which are sequentially arranged in parallel, and further comprises an execution unit, a die locking unit, a die locking unit and a die locking unit, wherein the execution unit is used for adjusting the relative positions of the fixed die plate, the pressurizing plate and the movable die plate; the hydraulic system is used for controlling the execution unit; the control system is used for controlling the hydraulic system, the execution unit comprises a mold moving oil cylinder, a high-pressure mold locking oil cylinder and a rear band-type brake oil cylinder, the mold moving oil cylinder is used for enabling the pressurizing plate to get close to or away from the fixed mold plate, the high-pressure mold locking oil cylinder is connected with the pressurizing plate and the mold moving plate, the rear band-type brake oil cylinder is used for fixing the position, relative to the pressurizing plate, of the mold moving plate, and the pressurizing plate is provided with a band-type brake holding device. And the band-type brake clasping device is connected with the telescopic end of the high-pressure mold locking oil cylinder in a matched manner. According to the utility model, the capacity modulus and the band-type brake position can be flexibly adjusted, and good synchronism and balanced mold locking force are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of die casting, in particular to a die locking device for a die casting machine. Background Art

[0002] Metal pressure casting is a process in which liquid metal or semi-solid metal is filled into the die-casting mold cavity at high speed under high pressure, and the liquid metal is kept under high pressure to cool and crystallize until solidification is completed, finally obtaining a product that meets the requirements. High-speed filling means that the production cycle can be shortened; high-pressure solidification means that the shape of the cavity can be accurately replicated, and the casting has fine grains and uniform structure. Metal die-casting is currently the most efficient metal casting method, with advantages such as short production cycle, good product mechanical properties, excellent surface quality, good quality reproducibility, ease of automation, and suitability for large-scale repeated production. It is particularly suitable for the one-piece forming of automobile frames.

[0003] Currently, the most widely used die-casting machine clamping mechanism is the direct-pressure clamping and locking mechanism. This mechanism eliminates the toggle mechanism, and the locking function is performed by a follower locking mechanism at the rear end of the movable platen. There are two common direct-pressure clamping and locking mechanisms. One is that the cylinder at the rear end of the movable platen provides both mold shifting and locking pressure. The other is that the actuating cylinder at the rear end of the movable platen provides mold shifting, and the high-pressure cylinder at the tie rod at the front end of the fixed platen provides locking pressure. One end of the tie rod passes through the high-pressure cylinder, resulting in the cumbersome removal of the tie rod when changing the mold. In both solutions, due to the close distance between the cylinder and the mold cavity and incomplete thermal insulation, the cylinder's operating temperature is high and fluctuates greatly, affecting the cylinder's performance and service life.

[0004] US utility model patent application number US18180561 discloses an electric mold opening and closing system for an injection molding machine. The system includes a mold opening and closing drive device, which includes a mold shifting mechanism, a brake mechanism, a mold closing mechanism, and a brake assist mechanism. During mold opening or closing, the brake assist mechanism and the mold shifting mechanism move the movable plate. During braking, the brake mechanism and the mold shifting mechanism form a linkage, and the mold locking mechanism locks the movable plate. The mold locking mechanism of this utility model positions the movable plate. Because the movable plate is subjected to a large load during die-casting, the mold locking mechanism in this utility model partially positions the movable plate, which can easily lead to uneven locking force on the movable plate, causing it to shift or tilt. Utility Model Content

[0005] The utility model aims to provide a die-casting machine die-locking device which has large die capacity and is convenient for disassembly, assembly and debugging.

[0006] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0007] A die-casting machine clamping device comprises: a fixed die plate, a booster plate and a movable die plate arranged in parallel in sequence; an execution unit for adjusting the relative positions of the fixed die plate, the booster plate and the movable die plate; a hydraulic system for controlling the execution unit; and a control system for controlling the hydraulic system.

[0008] Preferably, the execution unit includes a mold shifting cylinder, a high-pressure mold clamping cylinder, and a rear brake cylinder. The mold shifting cylinder is located on the side of the boost plate near the shifting plate, and its base is fixed to the frame. The mold shifting cylinder is used to move the boost plate toward and away from the fixed plate. The high-pressure mold clamping cylinder connects the boost plate and the shift plate, and the rear brake cylinder is used to fix the position of the shift plate relative to the boost plate. The mold shifting cylinder is located on the side of the boost plate near the shift plate, and its telescopic end is fixed to the cylinder. The base of the mold shifting cylinder is fixed to the frame. The mold shifting cylinder is driven by the hydraulic system to push the boost plate toward the fixed plate.

[0009] The hydraulic system is used to control the mold shifting cylinder, high-pressure clamping cylinder and rear brake cylinder;

[0010] The mold locking device also includes a detection unit, which includes a hydraulic pressure sensor, a proximity switch and a magnetic scale. The hydraulic pressure sensor is used to detect the internal pressure of the hydraulic system, the proximity switch is used to determine the position of the rear brake cylinder, and the magnetic scale is used to determine the position of the mold shifting cylinder and the booster plate.

[0011] The mold locking device also includes a control system, which includes a hardware system and a software system. The control system will control the hydraulic system according to the signal of the detection unit, and then complete actions such as mold moving, adjustment, braking and mold locking.

[0012] Preferably, the boost plate is provided with a brake clamping device, which is cooperatively connected with the telescopic end of the high-pressure clamping cylinder. The brake clamping device can clamp the telescopic end of the high-pressure clamping cylinder to form a connection between the boost plate and the transfer plate.

[0013] Preferably, the high-pressure clamping cylinder is arranged around one side of the transfer plate, the brake holding device is arranged on one side of the booster plate, and the brake holding device is arranged close to the high-pressure clamping cylinder.

[0014] The high-pressure clamping cylinder and the brake holding device are both arranged in the space between the booster plate and the transfer plate. On the one hand, this optimizes the spatial layout of the plate and increases the mold capacity. In addition, the high-pressure clamping cylinder and the brake holding device are arranged in a surrounding manner, providing balanced force for clamping the booster plate and the transfer plate and adjusting the slippage, thereby improving the clamping effect.

[0015] The coordinated connection between the brake holding device and the high-pressure clamping cylinder facilitates disassembly and assembly and plate debugging, thus improving work efficiency.

[0016] Preferably, the shifting platen is provided with a rear brake device, the rear brake cylinder is associated with the rear brake device, the fixed platen is provided with a column along the plate arrangement direction, the rear brake device is cooperatively connected to the column, and the rear brake cylinder is used to secure the rear brake device to the column. In the initial state, the brake clamping device clamps the telescopic end of the high-pressure clamping cylinder to secure the high-pressure clamping cylinder to the booster platen. At this time, the booster platen is locked to form a fixed connection with the shifting platen. The hydraulic system controls the telescopic movement of the shifting platen, so that the booster platen and the shifting platen move synchronously toward the fixed platen to perform the mold closing action. During this period, the control system uses a magnetic ruler to detect the position of the shifting platen to determine whether the mold closing is complete.

[0017] When the mold closing action is detected to be completed, the control system obtains the current mold closing position and calculates the retraction distance of the high-pressure clamping cylinder based on the magnetic scale;

[0018] The control system controls the hydraulic system to retract the high-pressure locking cylinder to the calculated distance;

[0019] After the moving plate returns to its position, the rear brake device holds the column tightly to lock the position of the moving plate.

[0020] Preferably, the rear brake device and rear brake cylinder are both arranged around the side of the transfer platen that does not have the high-pressure clamping cylinder. The rear brake device and the surrounding rear brake cylinder are arranged around the transfer platen in the same manner. This further improves the stability of the transfer platen during adjustment relative to the booster platen. It also achieves uniform load distribution on the transfer platen, which helps reduce the possibility of deformation on the transfer platen, improves the safety of the transfer platen, and reduces maintenance costs.

[0021] Preferably, the rear brake device includes a brake valve plate arranged in cooperation with the column, the brake valve plate being cooperatively connected to the brake cylinder. The brake valve plate can hold the column tightly, thereby fixing the position of the transfer plate relative to the column and completing the mold locking.

[0022] Preferably, the hydraulic system includes a mold shifting hydraulic control system, which includes a mold shifting cartridge valve group and a mold shifting proportional electromagnetic reversing valve configured with the mold shifting cylinder. The control system controls the mold shifting cylinder to perform mold opening and closing actions through the mold shifting proportional electromagnetic reversing valve.

[0023] Preferably, the hydraulic system includes a rear brake hydraulic control system, which includes a hydraulically controlled one-way valve and a brake solenoid reversing valve associated with the rear brake cylinder. The control system controls the brake solenoid reversing valve to open and close the brake according to the action logic and feedback signals from the proximity switch.

[0024] Preferably, the hydraulic system includes a high-pressure clamping hydraulic control system, which includes a clamping cartridge valve group, a clamping force maintaining relief valve, and a high-pressure clamping proportional valve associated with the high-pressure clamping cylinder. The oil chamber of the high-pressure clamping cylinder is connected to a clamping pressure sensor. The control system adjusts the position of the high-pressure clamping cylinder by controlling the opening of the high-pressure clamping proportional valve, thereby completing the position adjustment of the shift plate. After the shift plate reaches the specified position and the brake is engaged, the high-pressure clamping proportional valve is reversed and fully opened. At this time, the rod chamber of the high-pressure clamping cylinder is unloaded and the rodless chamber of the high-pressure clamping cylinder is filled with oil. The clamping pressure sensor detects that the pressure in the rodless chamber of the high-pressure clamping cylinder reaches a preset value, stops filling the rodless chamber of the high-pressure clamping proportional valve, and energizes the clamping force maintaining clamping cartridge valve group. At this time, the clamping force remains unchanged.

[0025] Compared with the prior art, the present invention has the following beneficial effects: the boost plate and the transfer platen are connected via a brake clamping device and a high-pressure clamping cylinder, making them easy to disassemble and adjust, thereby improving work efficiency; the evenly distributed high-pressure clamping cylinders improve the mold closing and clamping stability of the transfer platen, thereby improving the die-casting effect; the multiple high-pressure clamping cylinders can operate independently, ensuring parallelism between the plates, reducing interference during mold adjustment, and improving force balance; the brake clamping device and the high-pressure clamping cylinder are arranged between the boost platen and the transfer platen, optimizing the spatial layout and thereby increasing the mold capacity; the opposing hydraulic systems cooperate with the detection unit to automate the sequence of mold closing, mold adjustment, and mold locking, thereby facilitating operation; after mold adjustment, the rear brake device and the high-pressure clamping cylinder are used to achieve double brake clamping, thereby improving die-casting stability, preventing leakage, and ensuring precise processing; the control system cooperates with multiple valve bodies in the hydraulic system to achieve switching between different working modes, thereby shortening the response time of different components and improving work efficiency. Therefore, the present invention is a die-casting machine clamping device with a large mold capacity and easy disassembly, assembly, and debugging. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely illustrative, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0027] Figure 1 This is an overall schematic diagram of a die-casting machine clamping device;

[0028] Figure 2 This is a schematic diagram of the positions of the boost plate and the brake holding device;

[0029] Figure 3 Schematic diagram of the position of the transfer plate and high-pressure clamping cylinder.

[0030] Reference numerals: fixed die plate 1; booster plate 2; brake clamping device 3; high-pressure clamping cylinder 4; shifting die plate 5; rear brake device 6; shifting die cylinder 7; rear brake cylinder 8. DETAILED DESCRIPTION

[0031] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0032] The following first describes the concepts involved in this application with reference to the accompanying drawings. It should be noted that the following description of each concept is intended only to make the content of this application easier to understand and does not limit the scope of protection of this application. At the same time, the embodiments and features in the embodiments of this application can be combined with each other unless there is a conflict. The following detailed description of this application will be made with reference to the accompanying drawings and in conjunction with the embodiments.

[0033] See attached Figure 1 -Attached Figure 3 A die-casting machine clamping device includes: a fixed plate 1, a booster plate 2 and a movable plate 5 arranged in parallel in sequence, and also includes: an execution unit for adjusting the relative positions of the fixed plate 1, the booster plate 2 and the movable plate 5; a hydraulic system for controlling the execution unit; and a control system for controlling the hydraulic system.

[0034] The execution unit includes a mold shifting cylinder 7, a high-pressure clamping cylinder 4 and a rear brake cylinder 8. The mold shifting cylinder 7 is used to move the booster plate 2 closer to and away from the fixed mold plate 1. The high-pressure clamping cylinder 4 connects the booster plate 2 and the mold shifting plate 5. The rear brake cylinder 8 is used to fix the position of the mold shifting plate 5 relative to the booster plate 2.

[0035] The mold shifting cylinder 7 is arranged on the side of the boosting plate 2 close to the shifting plate 5. The telescopic end of the mold shifting cylinder 7 is fixed to the mold shifting cylinder 7. The base of the mold shifting cylinder 7 is fixed to the frame. The mold shifting cylinder 7 is driven by the hydraulic system to push the boosting plate 2 close to the fixed plate 1.

[0036] The hydraulic system is used to control the mold shifting cylinder 7, the high-pressure mold locking cylinder 4 and the rear brake cylinder 8;

[0037] The mold locking device also includes a detection unit, which includes a hydraulic pressure sensor, a proximity switch and a magnetic scale. The hydraulic pressure sensor is used to detect the internal pressure of the hydraulic system, the proximity switch is used to determine the position of the rear brake cylinder 8, and the magnetic scale is used to determine the position of the mold shifting cylinder 7 and the booster plate 2.

[0038] The mold locking device also includes a control system, which controls the hydraulic system according to the signal from the detection unit to complete actions such as mold moving, adjustment, braking and mold locking.

[0039] The boost plate 2 is provided with a brake clamping device 3, which is connected to the telescopic end of the high-pressure clamping cylinder 4. The brake clamping device 3 can clamp the telescopic end of the high-pressure clamping cylinder 4 to form a connection between the boost plate 2 and the transfer plate 5;

[0040] The high-pressure clamping oil cylinder 4 is arranged around one side of the transfer plate 5, and the brake holding device 3 is arranged on one side of the booster plate 2. The brake holding device 3 is arranged close to the high-pressure clamping oil cylinder 4.

[0041] The high-pressure clamping cylinder 4 and the brake holding device 3 are both arranged in the space between the booster plate 2 and the transfer plate 5. On the one hand, the spatial layout of the plate body is optimized and the mold capacity is increased. In addition, the high-pressure clamping cylinder 4 and the brake holding device 3 are arranged in a surrounding manner, providing balanced force for clamping the booster plate 2 and the transfer plate 5 and adjusting the slippage, thereby improving the clamping effect.

[0042] The coordinated connection between the brake holding device 3 and the high-pressure clamping cylinder 4 facilitates disassembly and assembly and debugging of the plate, thereby improving work efficiency.

[0043] The movable template 5 is provided with a rear brake device 6, and the rear brake cylinder 8 is equipped with the rear brake device 6. The fixed template 1 is provided with a column along the plate layout direction, and the rear brake device 6 is connected with the column. The rear brake cylinder 8 is used to fix the rear brake device 6 and the column.

[0044] In the initial state, the brake holding device 3 clamps the telescopic end of the high-pressure clamping cylinder 4, fixing the high-pressure clamping cylinder 4 and the booster plate 2. At this time, the booster plate 2 and the shifting plate 5 are locked to form a fixed connection. The hydraulic system controls the shifting cylinder 7 to extend and retract, so that the booster plate 2 and the shifting plate 5 move synchronously toward the fixed plate 1 after being fixed, and the mold is closed. During this period, the control system detects the position of the shifting plate 5 by the magnetic scale to determine whether the mold is closed.

[0045] When the mold closing action is detected to be completed, the control system obtains the current mold closing position and calculates the retraction distance of the high-pressure mold clamping cylinder 4 according to the magnetic scale;

[0046] The control system controls the hydraulic system to retract the high-pressure locking cylinder to the calculated distance;

[0047] After the moving plate 5 is retracted into position, the rear brake device 6 holds the column tightly to lock the position of the moving plate 5.

[0048] The rear brake device 6 is arranged around the side of the transfer plate 5 that does not have the high-pressure clamping cylinder 4. The rear brake device 6 is arranged around the same side as the collar column, and the rear brake cylinder 8 arranged around the transfer plate 5 is evenly distributed on the transfer plate 5. This further improves the movement stability of the transfer plate 5 during adjustment relative to the booster plate 2. It also achieves uniform load distribution on the transfer plate 5, which helps reduce the possibility of deformation on the transfer plate 5, improves the safety of the transfer plate 5, and reduces maintenance costs.

[0049] The rear brake device 6 includes a brake valve plate that is arranged in cooperation with the column, and the brake valve plate is cooperatively connected to the brake cylinder.

[0050] The gate valve plate can hold the column tightly, thereby fixing the position of the transfer plate 5 relative to the column and completing the mold locking.

[0051] The hydraulic system includes a mold shift hydraulic control system, which includes a mold shift cartridge valve group and a mold shift proportional solenoid reversing valve associated with the mold shift cylinder 7. The control system controls the mold shift cylinder 7 to open and close the mold through the mold shift proportional solenoid reversing valve.

[0052] The hydraulic system includes a rear brake hydraulic control system, which includes a hydraulically controlled one-way valve and a brake electromagnetic reversing valve associated with the rear brake cylinder 8. There are two hydraulically controlled one-way valves.

[0053] The control system controls the brake solenoid reversing valve to open and close the gate according to the action logic and the feedback signal of the proximity switch.

[0054] The hydraulic system includes a high-pressure clamping hydraulic control system, which includes a clamping cartridge valve group, a clamping force retention relief valve, and a high-pressure clamping proportional valve associated with the high-pressure clamping cylinder 4. The oil chamber of the high-pressure clamping cylinder 4 is connected to a clamping pressure sensor. There are two relief valves.

[0055] The control system adjusts the position of the high-pressure locking cylinder 4 by controlling the opening of the high-pressure locking proportional valve, thereby completing the position adjustment action of the shifting plate 5. After the shifting plate 5 reaches the specified position and the brake is completed, the high-pressure locking proportional valve is reversed and fully opened. At this time, the rod cavity of the high-pressure locking cylinder 4 is unloaded, and the rodless cavity of the high-pressure locking cylinder 4 is filled with oil. The locking pressure sensor detects that the pressure in the rodless cavity of the high-pressure locking cylinder 4 reaches the preset value, and the rodless cavity of the high-pressure locking proportional valve stops filling with oil. The locking force maintaining locking plug-in valve group is energized, and the locking force remains unchanged.

[0056] It should be noted that the control system includes:

[0057] Substation I / O module, which is used to transmit data, execute action commands and collect feedback signals;

[0058] The master station PLC is used to store the parameters, control methods and control algorithms required for the mold clamping action. The master station PLC controls the hydraulic system through the sub-station I / O module.

[0059] The mold transfer cartridge valve group includes a quick mold opening pilot cartridge valve, an oil inlet safety pilot cartridge valve and a differential mold closing pilot cartridge valve.

[0060] The rapid mold opening pilot cartridge valve, the oil inlet safety pilot cartridge valve and the differential mold closing pilot cartridge valve are respectively connected to the mold shifting proportional electromagnetic reversing valve oil circuit. The control system controls the mold shifting cylinder 7 to perform mold opening and closing actions through the mold shifting proportional electromagnetic reversing valve.

[0061] The clamping cartridge valve assembly includes a clamping force holding pilot valve and a clamping force release pilot valve; two relief valves are provided, one for clamping force holding and one for clamping force release. The clamping force holding pilot valve and the clamping force holding relief valve are connected in series with the high-pressure clamping proportional valve, while the clamping force release pilot valve and the clamping force release relief valve are connected in series with the high-pressure clamping proportional valve. The high-pressure clamping proportional valve also works with a clamping pressure sensor.

[0062] The control system adjusts the position of the transfer plate 5 and the high-pressure clamping action by controlling the high-pressure clamping proportional valve according to the information fed back by the clamping pressure sensor. The two pilot-operated cartridge valves respectively play the role of clamping force maintenance and clamping force release.

[0063] The process of the mold-locking action of the mold-shifting cylinder 7 includes the following: when the safety door of the three-plate direct pressure die-casting machine is not closed, the oil inlet safety pilot cartridge valve will not be energized, the system flow will not enter the mold-shifting cylinder 7, and the mold-shifting proportional electromagnetic reversing valve will perform the mold-shifting action according to the analog signal given by the substation I / O module. The control system can calculate the distance traveled by the mold-shifting cylinder 7 based on the mold thickness. When the distance reaches the mold closing position, the mold-shifting proportional electromagnetic reversing valve will close, and the system will enter the brake adjustment action.

[0064] The brake adjustment process involves the following: the control system calculates the tooth position corresponding to the current brake position based on the position indicated by the mold clamping position scale and the position of the first tooth of the mold rod, and then calculates the adjustment distance of the shift plate 5. The control system controls the high-pressure cylinder via the high-pressure mold clamping proportional valve to adjust the position of the shift plate 5. During the adjustment process, the position of each high-pressure cylinder varies. The control system adjusts the opening of each high-pressure mold clamping proportional valve based on the feedback signal from the high-pressure mold clamping position scale (i.e., the ratio of the high-pressure mold clamping cylinder 4 position to the average value). The opening adjustment method uses negative proportional feedback, and the proportional coefficient is embedded in the program and cannot be adjusted externally. When each high-pressure mold clamping cylinder 4 reaches the specified position, one side of the brake solenoid reversing valve is energized, and the rear brake device 6 clamps the mold rod. The control system determines whether the brake action is complete by detecting the proximity switch signal. If the brake action is not complete, the control system reopens the brake, fine-tunes the position of the high-pressure mold clamping cylinder 4, and re-applies the brake, while re-recording the brake position.

[0065] The process of high-pressure clamping action includes the following: when the braking action is performed, the rodless cavity of the mold shifting cylinder 7 is still in a high-pressure state. When the braking is completed, the mold shifting cylinder 7 is unloaded, the high-pressure clamping proportional valve is reversed and fully opened, and oil is supplied to the rodless cavity of the high-pressure clamping cylinder 4; when the clamping pressure sensor detects that the pressure of the rodless cavity of the high-pressure clamping cylinder 4 reaches the set value, the clamping force maintaining pilot cartridge valve is energized, the clamping force is locked, and the high-pressure clamping proportional valve is closed.

[0066] The four-cylinder linkage clamping control method of the utility model comprises the following steps:

[0067] Step 1: The control system controls the mold shifting cylinder 7 to move toward the mold locking direction through the hydraulic system, and the booster plate 2 and the mold shifting plate 5 move toward the fixed plate 1. The control system determines whether the mold closing is completed based on the signal feedback from the mold shifting position scale, or based on the pressure feedback from the rodless cavity of the mold shifting cylinder 7.

[0068] Step 2: The control system calculates the brake tooth position corresponding to the current mold closing position, and calculates the retraction distance of the high-pressure mold locking cylinder 4 according to the position of the mold shifting position ruler and the set tooth pitch;

[0069] Step 3: The control system adjusts the position of the high-pressure clamping cylinder 4 by controlling the opening of the high-pressure clamping proportional valve. The high-pressure clamping cylinder 4 pushes the transfer plate 5 to move to the calculated retraction distance.

[0070] Step 4: After the template 5 is moved back to its proper position, the rear brake device 6 is tightened;

[0071] Step 5: After the rear brake device 6 completes the braking, the high-pressure clamping proportional valve is reversed and fully opened, the rod cavity of the high-pressure clamping oil cylinder 4 is unloaded, and its rodless cavity is filled with oil;

[0072] Step 6: The clamping pressure sensor detects that the pressure of the rodless chamber of the high-pressure clamping cylinder 4 reaches the set value, the high-pressure clamping proportional valve stops supplying oil, and the clamping force maintaining pilot cartridge valve is energized to keep the clamping force unchanged.

[0073] The embodiments and / or implementation methods described above are only used to illustrate the preferred embodiments and / or implementation methods for realizing the technology of the present invention, and are not intended to limit the implementation methods of the technology of the present invention in any form. Any person skilled in the art may make slight changes or modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but they should still be regarded as technologies or embodiments that are essentially the same as the present invention.

[0074] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of this application, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A die-casting machine clamping device, comprising: The fixed die plate (1), the boosting plate (2) and the moving die plate (5) are arranged in parallel in sequence, and are characterized by further comprising: An execution unit, used for adjusting the relative positions of the fixed die plate (1), the boost plate (2), and the movable die plate (5); A hydraulic system for controlling the execution unit; A control system for controlling the hydraulic system; The execution unit includes a high-pressure clamping cylinder (4), the boosting plate (2) is provided with a brake holding device (3), the brake holding device (3) is cooperatively connected with the telescopic end of the high-pressure clamping cylinder (4), the brake holding device (3) can hold the telescopic end of the high-pressure clamping cylinder (4) to form a connection between the boosting plate (2) and the shifting plate (5), the high-pressure clamping cylinder (4) is arranged around one side of the shifting plate (5), the brake holding device (3) is arranged on one side of the boosting plate (2), and the brake holding device (3) is arranged close to the high-pressure clamping cylinder (4).

2. The die-casting machine clamping device according to claim 1, characterized in that: The execution unit further comprises a mold shifting cylinder (7) and a rear brake cylinder (8), wherein the mold shifting cylinder (7) is arranged on the side of the boosting plate (2) close to the shifting plate (5), and the base of the mold shifting cylinder (7) is fixed to the frame, and the mold shifting cylinder (7) is used to move the boosting plate (2) close to and away from the fixed plate (1), the high-pressure clamping cylinder (4) connects the boosting plate (2) and the shifting plate (5), and the rear brake cylinder (8) is used to fix the position of the shifting plate (5) relative to the boosting plate (2).

3. The die-casting machine clamping device according to claim 2, characterized in that: The movable template (5) is provided with a rear brake device (6), the rear brake oil cylinder (8) is equipped with the rear brake device (6), the fixed template (1) is provided with a column along the plate arrangement direction, the rear brake device (6) is cooperatively connected with the column, and the rear brake oil cylinder (8) is used to fix the rear brake device (6) and the column.

4. The die-casting machine clamping device according to claim 3, characterized in that: The rear brake device (6) and the rear brake oil cylinder (8) are both arranged around the side of the transfer plate (5) that does not have the high-pressure clamping oil cylinder (4).

5. The die-casting machine clamping device according to claim 3, characterized in that: The rear brake device (6) comprises a brake valve plate arranged in cooperation with the column, and the brake valve plate is cooperatively connected with the rear brake oil cylinder (8).

6. The die-casting machine clamping device according to claim 2, characterized in that: The hydraulic system comprises a mold shifting hydraulic control system, and the mold shifting hydraulic control system comprises a mold shifting plug-in valve group and a mold shifting proportional electromagnetic reversing valve equipped with the mold shifting oil cylinder (7).

7. The die-casting machine clamping device according to claim 2, characterized in that: The hydraulic system comprises a rear brake hydraulic control system, and the rear brake hydraulic control system comprises a brake electromagnetic reversing valve and a hydraulically controlled one-way valve provided with the rear brake oil cylinder (8).

8. The die-casting machine clamping device according to claim 2, characterized in that: The hydraulic system comprises a high-pressure clamping hydraulic control system, the oil chamber of the high-pressure clamping oil cylinder (4) is connected to a clamping pressure sensor, and the high-pressure clamping hydraulic control system comprises a clamping cartridge valve group, a clamping force maintaining overflow valve and a high-pressure clamping proportional valve provided with the high-pressure clamping oil cylinder (4).

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