Supercharged die assembly structure of ultra-large die casting machine

Abstract

The utility model discloses a supercharged die assembly structure of an ultra-large die casting machine, which comprises a fixed die plate, a movable die plate and a rear die plate which are arranged in parallel, a supercharged plate is arranged between the fixed die plate and the movable die plate, and the movable die plate is hinged and matched with the supercharged plate; the large bar sequentially penetrates through the rear mold plate, the movable mold plate, the pressurizing plate and the fixed mold plate, and the movable mold plate and the pressurizing plate are both in sliding fit with the large bar; a mold closing driving mechanism is arranged between the rear mold plate and the movable mold plate, the rear end of the mold closing driving mechanism is hinged to the rear mold plate, and the front end of the mold closing driving mechanism is connected with the movable mold plate. The utility model has the advantages of high running stability and low possibility of abrasion, and can provide larger mold locking force and improve the mold closing precision at the same time.

Description

Technical Field

[0001] The utility model belongs to the technical field of die-casting machines, and in particular relates to a supercharged die-casting machine. Background Art

[0002] The double-elbow five-point oblique die-casting machine is widely used in the die-casting industry and has the advantage of low manufacturing cost. However, the die-casting machine has low clamping accuracy and limited clamping force. With the development of automotive die-casting molding technology, precision, high efficiency and large-scale have become the development trend of die-casting equipment. The large-scale die-casting parts and the improvement of product quality require die-casting machines with large clamping force. The clamping mechanism is the key to whether the die-casting machine can meet the above product requirements.

[0003] The invention with the publication number of JP6829325B2 provides a mold casting device, comprising: a lifting mechanism that lifts and lowers the upper mold; a template fixed to the upper mold; and a base member that is provided at the upper end of the lifting mechanism and supports the template from below. The mold casting device can easily replace the mold. The metal mold casting device can arrange the upper metal mold in the device from above the device, which can improve the workability of the mold replacement operation.

[0004] The invention with the announcement number CN104999048B discloses a booster type clamping hydraulic mechanism for a heavy-duty die-casting machine, including a clamping cylinder, a booster cylinder, a clamping cartridge valve, a booster oil return cartridge valve, a booster reset cartridge valve, a mold opening cartridge valve, a clamping oil return cartridge valve, a clamping electromagnetic directional valve, a booster reset electromagnetic directional valve, a mold opening electromagnetic directional valve, a clamping check valve, a mold opening oil return electromagnetic directional valve, a mold opening oil return shuttle valve, a mold opening oil return cartridge valve, a booster electromagnetic directional valve, a booster cartridge valve, a booster reset oil return cartridge valve, a stroke detection device and a pipeline. The invention starts with the oil pressure in the clamping cylinder, and changes the pressure in the clamping cylinder by boosting under the premise of ensuring that the system pressure remains unchanged. On the basis of not increasing the oil pump displacement and not needing to increase the system pressure, it can improve work efficiency, reduce energy consumption and reduce machine cost. It has the characteristics of simple and reasonable structure, reliable performance, low manufacturing cost, easy production, easy implementation, high work efficiency and low energy consumption.

[0005] However, an analysis of the existing die-casting machine clamping mechanism shows that the stability of the clamping process still needs to be further improved, and it is unable to provide a greater clamping force, making it difficult to meet the current high clamping force requirements of most die-casting parts. Utility Model Content

[0006] The utility model aims to provide a super-large die-casting machine supercharged mold clamping structure with simple structure, high running stability, not easy to wear, and can provide a large clamping force while improving the mold clamping accuracy.

[0007] The technical solution adopted by the utility model to achieve the above-mentioned purpose is:

[0008] A super-large die-casting machine supercharged mold clamping structure comprises a fixed mold plate, a movable mold plate and a rear mold plate arranged in parallel, a supercharged plate is arranged between the fixed mold plate and the movable mold plate, and the movable mold plate and the supercharged plate are hingedly matched; a large bar passes through the rear mold plate, the movable mold plate, the supercharged plate and the fixed mold plate in sequence, and the movable mold plate and the supercharged plate are both slidably matched with the large bar;

[0009] A mold clamping drive mechanism is arranged between the rear template and the movable template, the rear end of the mold clamping drive mechanism is hinged to the rear template, and the front end of the mold clamping drive mechanism is connected to the movable template.

[0010] According to one embodiment of the utility model, the movable mold plate is equipped with a high-pressure oil cylinder for mold closing and pressurizing. The output end of the high-pressure oil cylinder includes a first piston rod. The free end of the first piston rod is connected to a first connecting rod. The end of the first connecting rod away from the first piston rod is hingedly matched with the boosting plate.

[0011] According to an implementation mode of the utility model, the rear mold plate is equipped with a mold shifting cylinder, the output end of the mold shifting cylinder is equipped with a second piston rod, and the second piston rod is connected to the mold clamping drive mechanism.

[0012] Furthermore, the mold clamping drive mechanism is a toggle-type structure, including a front connecting rod, a rear connecting rod, a small connecting rod, a pull plate, a guide plate and a guide rod;

[0013] The front end of the front connecting rod is connected to the moving template, the rear end of the front connecting rod is hinged to the front end of the rear connecting rod, and the rear end of the rear connecting rod is hinged to the rear template;

[0014] One end of the small connecting rod is connected to the rear connecting rod, and the other end of the small connecting rod is connected to the pull plate; the pull plate is connected to the second piston rod;

[0015] One end of the guide rod is fixed on the rear template, and the other end of the guide rod passes through the pull plate and is connected with the guide plate, and the guide plate is fixed on the rear template.

[0016] By adopting the above technical solution, on the basis of the structure of the original double-bend five-point oblique die-casting machine, a booster plate and a corresponding booster structure are added, and continuous high pressure is provided by the high-pressure cylinder during the clamping process to increase the clamping force of the die-casting machine. The booster clamping structure has the advantage of stable clamping of the traditional elbow-type die-casting machine; it also solves the problem of insufficient clamping force of the elbow-type die-casting machine; and optimizes the five-point oblique clamping mechanism: guide plates and guide rods are added on the original basis to solve the problem of low stability of the original clamping mechanism during operation. The guide plates and guide rods are set in the clamping drive mechanism, which can improve the synchronization of the operation between multiple small connecting rods, rear connecting rods and front connecting rods during the clamping process, thereby ensuring the smooth operation of the moving template and the booster plate during the opening of the elbow-type structure.

[0017] According to an implementation manner of the utility model, a protective cover is provided on the outer cover of the large bar, and the guide plate is connected to the protective cover.

[0018] According to one embodiment of the utility model, the movable platen is provided with an ejection mechanism; the ejection mechanism can reduce the possibility of the mold and the fixture getting stuck during demoulding, and improve the smoothness of demoulding. The ejection mechanism includes an ejector pin that can move back and forth, and the movable end of the ejector pin is arranged on the side of the movable platen away from the supercharging plate.

[0019] According to an embodiment of the present utility model, the large lever cooperates with the brake structure and the large lever nut 18 to achieve locking or releasing of the large lever.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] 1. Based on the structure of the original double-toggle five-point oblique die-casting machine, a booster plate and corresponding booster structure are added to increase the clamping force of the die-casting machine;

[0022] 2. The five-point oblique clamping mechanism has been optimized, and guide plates and guide rods have been added to the original one, solving the problem of low stability of the original clamping mechanism during operation;

[0023] 3. A guide plate and a guide rod are arranged in the mold closing drive mechanism, which can improve the synchronization of the operation between multiple small connecting rods, the rear connecting rod and the front connecting rod during the mold closing process, thereby ensuring the smooth operation of the moving plate and the booster plate during the opening of the toggle structure.

[0024] Therefore, the super-large die-casting machine pressurized mold clamping structure of the utility model has high running stability, is not easy to wear, and can improve the mold clamping accuracy while providing a larger clamping force. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of a super-large die-casting machine pressurized mold clamping structure according to one embodiment of the utility model;

[0026] Figure 2 for Figure 1 A partial schematic diagram of a super-large die-casting machine pressurized mold clamping structure is shown;

[0027] Figure 3 for Figure 1 Another partial schematic diagram of the super-large die-casting machine's pressurized mold clamping structure is shown.

[0028] Figure numerals: fixed template 1; booster plate 2; movable template 3; front connecting rod 4; small connecting rod 5; guide plate 6; rear connecting rod 7; rear template 8; second piston rod 9; mold shifting cylinder 10; large lever 11; pull plate 12; guide rod 13; ejector pin 14; first piston rod 15; high-pressure cylinder 16; first connecting rod 17; large lever nut 18; protective cover 19. DETAILED DESCRIPTION

[0029] The technical solution of the utility model is further described in detail below in combination with the specific implementation mode and the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0030] Example 1

[0031] Figure 1~Figure 3 The supercharged die-casting machine according to an embodiment of the present invention is schematically shown. As shown in the figure, the device includes a fixed die plate 1, a supercharged plate 2, a movable die plate 3, a rear die plate 8, a large lever 11, an ejection structure 14, a high-pressure oil cylinder 16, a die-closing drive mechanism and a guide mechanism (not shown in the figure), etc.

[0032] The fixed mold plate 1 and the rear mold plate 8 are fixed on the frame, the boost plate 2 and the movable mold plate 3 are arranged in parallel between the fixed mold plate 1 and the rear mold plate 8, and the fixed mold plate 1, the boost plate 2, the movable mold plate 3 and the rear mold plate 8 are arranged in parallel in sequence.

[0033] The movable platen 3 is hingedly matched with the booster plate 2. Specifically, the movable platen 3 is equipped with four high-pressure oil cylinders 16 for mold clamping and boosting. The output end of the high-pressure oil cylinder 16 includes a first piston rod 15, and the free end of the first piston rod 15 is connected to a first connecting rod 17, and the end of the first connecting rod 17 away from the first piston rod 15 is hingedly matched with the booster plate 2.

[0034] A mold clamping drive mechanism is arranged between the rear template 8 and the movable template 3 , the rear end of the mold clamping drive mechanism is hinged to the rear template 8 , and the front end of the mold clamping drive mechanism is connected to the movable template 3 .

[0035] Four large bars 11 pass through the rear template 8, the movable template 3, the boost plate 2 and the fixed template 1 in parallel. The movable template 3 and the boost plate 2 can slide relative to the large bars 11. After the position of the large bars 11 is adjusted, the locking or release of the large bars 11 can be achieved through the cooperation of the front and rear brake structures and the large bar nuts 18.

[0036] The mold shifting cylinder 10 is fixed on the rear mold plate 8. The output end of the mold shifting cylinder 10 is provided with a second piston rod 9. The second piston rod 9 is connected to the mold closing drive mechanism to perform mold opening and closing movements.

[0037] The mold clamping drive mechanism is a toggle-type structure, including a front connecting rod 4, a rear connecting rod 7, a small connecting rod 5, a pull plate 12, a guide plate 6 and a guide rod 13; wherein the pull plate 12 is a cross-head pull plate, and the guide rod 13 is a cross-head guide rod. The front end of the front connecting rod 4 is connected to the movable template 3, the rear end of the front connecting rod 4 is hinged to the front end of the rear connecting rod 7, and the rear end of the rear connecting rod 7 is hinged to the rear template 8; one end of the small connecting rod 5 is connected to the rear connecting rod 7, and the other end of the small connecting rod 5 is connected to the pull plate 12; the pull plate 12 is connected to the second piston rod 9; one end of the guide rod 13 is fixed to the rear template 8, and the other end of the guide rod 13 passes through the pull plate 12 and is connected to the guide plate 6, and the guide plate 6 is fixed to the rear template 8. A protective cover 19 is provided on the outer cover of the large bar 11, and the guide plate 6 is connected to the protective cover 19.

[0038] The movable platen 3 is provided with an ejector mechanism, which can reduce the possibility of the mold and the fixture getting stuck during demoulding and improve the smoothness of demoulding. The ejector mechanism includes an ejector pin 14 that can move back and forth, and the movable end of the ejector pin 14 is arranged on the side of the movable platen 3 away from the supercharging plate 2.

[0039] When the super-large die-casting machine pressurized mold clamping structure of this embodiment is adopted, the specific action process is as follows:

[0040] During the mold closing process, the mold transfer cylinder 10 is first started, and the second piston rod 9 pushes the pull plate 12 to move forward. During the movement, the pull plate 12 drives the small connecting rod 5, the rear connecting rod 7 and the front connecting rod 4 to move together, and finally completes the opening of the toggle-type structure in the mold closing drive mechanism. During the opening of the toggle-type structure, the movable plate 3 and the booster plate 2 are pushed forward together, and the toggle-type structure is opened and the mold closing is completed.

[0041] After the mold is closed, the injection system of the die-casting machine starts to inject materials into the mold. After the injection action is completed, the pressurization process is started. At this time, high-pressure oil is introduced into the left side of the high-pressure cylinder 16, and the first piston rod 15 pressurizes the boost plate 2. The boost plate 2 is slightly displaced at this time, and the clamping force on the mold increases until the pressure holding process is completed. After the die-casting is completed, the pressure oil enters the right side of the high-pressure cylinder 16 and the pressurization stops. The boosted mold closing structure moves to open the mold. At this time, the mold moving cylinder 10 pulls the pull plate 12 and the elbow-type structure backward as a whole through the second piston rod 9, driving the moving template 3 and the boost plate 2 to move backward to complete the mold opening action. After the mold opening is completed, the ejection mechanism is started, and the ejector 14 is extended and retracted under the drive of the cylinder or the motor to eject the die casting to complete the ejection action.

[0042] The die-casting machine supercharged clamping structure of this embodiment is based on the structure of the original double-elbow five-point inclined die-casting machine, and a supercharger plate 2 and a corresponding supercharger structure are provided. During the clamping process, a high-pressure oil cylinder 16 provides continuous high pressure to increase the clamping force of the die-casting machine. The supercharged clamping structure has the advantages of stable clamping of the traditional toggle die-casting machine; at the same time, it also solves the problem of insufficient clamping force of the toggle die-casting machine.

[0043] The die-casting machine supercharged clamping structure of this embodiment optimizes the traditional five-point oblique clamping mechanism: the guide plate 6 and the guide rod 13 are added on the original basis, which can solve the problem of low stability of the original clamping mechanism during operation. The guide plate 6 and the guide rod 13 are arranged in the clamping drive mechanism, which can improve the synchronization of the operation between the multiple small connecting rods 5, the rear connecting rod 7 and the front connecting rod 4 during the clamping process, thereby ensuring the stable operation of the moving plate 3 and the supercharged plate 2 during the opening of the toggle structure.

[0044] After the mold shifting cylinder 10 is started, the pull plate 12 moves under the push of the second piston rod 9. Due to the setting of the guide plate 6 and the guide rod 13, it helps to improve the accuracy of the moving direction of the pull plate 12 and avoid the pull plate 12 from tilting or shifting due to local force, thereby ensuring that the multiple small connecting rods 5 connected to the pull plate 12 are balanced in force, thereby improving the stability of the movable mold plate 3 and the booster plate 2 during movement, and preventing the movable mold plate 3 and the booster plate 2 from getting stuck during movement. It can not only reduce the friction of components during the operation of the equipment, thereby reducing wear, but also reduce the frustration of the equipment during the clamping process, avoid loosening or displacement of equipment components due to vibration, and ensure the stability and accuracy of the clamping.

[0045] In addition, the die-casting machine pressurized clamping structure of this embodiment can also reduce the possibility of the mold and the fixture getting stuck during demolding, and improve the smoothness of demolding. After the mold is opened, the ejector pin 14 in the ejector mechanism is extended and retracted to assist the die-casting to be demolded. During this process, the multiple front connecting rods 4 in the clamping drive mechanism support the movable plate 3, which can ensure that the mating surface of the die-casting and the ejector mechanism remains vertical, that is, it can ensure that the force of the ejector pin 14 acts vertically on the die-casting, thereby improving the demolding efficiency of the die-casting, ensuring the demolding effect, and avoiding bumps or wear.

[0046] The setting of the clamping drive mechanism can not only improve the smoothness of the operation of the movable mold plate 3 and the boost plate 2, but also ensure the verticality of the movable mold plate 3 and the boost plate 2, thereby ensuring the verticality of the die-casting surface, so that the deposition amount of impurities such as dust and debris that may exist on the die-casting surface is greatly reduced, and the impurities that may exist on the die-casting surface can easily fall off during the movement of the movable mold plate 3 and the boost plate 2, which can prevent the impurities on the clamping surface from affecting the surface flatness of the die-casting during the die-casting process.

[0047] The conventional operations in the operating steps of the present invention are well known to those skilled in the art and will not be described in detail here.

[0048] The embodiments described above provide a detailed description of the technical solution of the utility model. It should be understood that the above is only a specific embodiment of the utility model and is not intended to limit the utility model. Any modifications, supplements or similar substitutions made within the scope of the principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A supercharged die-casting machine die-casting structure, comprising a fixed die plate (1), a movable die plate (3) and a rear die plate (8) arranged in parallel, characterized in that: A pressure plate (2) is arranged between the fixed die plate (1) and the movable die plate (3), and the movable die plate (3) is hingedly engaged with the pressure plate (2); a large bar (11) passes through the rear die plate (8), the movable die plate (3), the pressure plate (2) and the fixed die plate (1) in sequence, and the movable die plate (3) and the pressure plate (2) are both slidably engaged with the large bar (11); A mold clamping drive mechanism is arranged between the rear mold plate (8) and the movable mold plate (3), the rear end of the mold clamping drive mechanism is hinged to the rear mold plate (8), and the front end of the mold clamping drive mechanism is connected to the movable mold plate (3); The rear mold plate (8) is provided with a mold shifting cylinder (10), the output end of the mold shifting cylinder (10) is provided with a second piston rod (9), and the second piston rod (9) is connected to the mold clamping drive mechanism; The mold clamping drive mechanism is a toggle-type structure, comprising a front connecting rod (4), a rear connecting rod (7), a small connecting rod (5), a pull plate (12), a guide plate (6) and a guide rod (13); The front end of the front connecting rod (4) is connected to the movable template (3), the rear end of the front connecting rod (4) is hinged to the front end of the rear connecting rod (7), and the rear end of the rear connecting rod (7) is hinged to the rear template (8); one end of the small connecting rod (5) is connected to the rear connecting rod (7), and the other end of the small connecting rod (5) is connected to the pull plate (12); the pull plate (12) is connected to the second piston rod (9); one end of the guide rod (13) is fixed to the rear template (8), and the other end of the guide rod (13) passes through the pull plate (12) and is connected to the guide plate (6), and the guide plate (6) is fixed to the rear template (8).

2. The super-large die-casting machine pressurized mold clamping structure according to claim 1 is characterized in that: The movable platen (3) is equipped with a high-pressure oil cylinder (16) for mold clamping and pressurizing. The output end of the high-pressure oil cylinder (16) includes a first piston rod (15). The free end of the first piston rod (15) is connected to a first connecting rod (17). The end of the first connecting rod (17) away from the first piston rod (15) is hingedly matched with the pressurizing plate (2).

3. The super-large die-casting machine pressurized mold clamping structure according to claim 1, characterized in that: The outer cover of the large bar (11) is provided with a protective cover (19), and the guide plate (6) is connected to the protective cover (19).

4. The super-large die-casting machine pressurized mold clamping structure according to claim 1, characterized in that: The movable platen (3) is provided with an ejection mechanism; the ejection mechanism comprises an ejector pin (14) which can move back and forth, and the movable end of the ejector pin (14) is arranged on a side of the movable platen (3) away from the supercharging plate (2).

5. The super-large die-casting machine pressurized mold clamping structure according to claim 1, characterized in that: The large lever (11) cooperates with the brake structure and the large lever nut (18) to achieve locking or releasing of the large lever (11).

Images