Double-station mold closing mechanism

Abstract

A double-station mold closing mechanism comprises a first fixed mold plate 1, four large rods 2 and a movable mold mechanism 3, the movable mold mechanism 3 is provided with a first movable mold plate 31, a first mold station is formed between the first fixed mold plate 1 and the first movable mold plate 31, the double-station mold closing mechanism is characterized by further comprising a second fixed mold plate 4, the movable mold mechanism 3 is further provided with a second movable mold plate 34, and the second movable mold plate 34 is provided with a second mold station. And a second mold station is formed between the second fixed mold plate 4 and the second movable mold plate 34. The double-station mold closing mechanism is provided with the two mold stations, mold opening is conducted on the second mold station while mold closing is conducted on the first mold station, mold opening is conducted on the second mold station while mold closing is conducted on the first mold station, and compared with a traditional mold closing mechanism only provided with one mold station, the double-station mold closing mechanism can drive two pairs of molds to conduct production at the same time; therefore, the working efficiency of the mold closing mechanism is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the field of mold forming machinery, specifically relates to a mold clamping mechanism of mold forming machinery, and is particularly applicable to the mold clamping mechanisms of injection molding machines and die casting machines. Background Art

[0002] At present, for traditional mold forming machinery such as injection molding machines and die casting machines, their mold clamping mechanisms are all single-station structures, that is, only one set of molds can be installed on each injection molding machine or die casting machine for production. Each time the mold is formed, the mold clamping mechanism needs to perform mold clamping and mold opening once, and in addition, it also has to go through working links such as material injection, cooling and forming, and ejecting workpieces. The entire production cycle is relatively long. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to develop a double-station mold clamping mechanism, which is applied to an injection molding machine or a die casting machine, so that two sets of molds can be installed on each injection molding machine or die casting machine for simultaneous production. The forming processes of each set of molds do not interfere with each other and there is partial overlap in the cycle period, thereby greatly improving the overall production efficiency. Basically, it is equivalent to one forming machine doing the work of two forming machines, improving the utilization rate of the equipment and reducing the floor area.

[0004] The technical problem of the utility model is implemented through the following technical solutions: A double-station mold clamping mechanism includes a first fixed template (1), four large rods (2), and a moving mold mechanism (3). The moving mold mechanism (3) is provided with an ejection mechanism (33) and a first moving template (31). A first mold station is formed between the first fixed template (1) and the first moving template (31). It is characterized in that it further includes a second fixed template (4); the moving mold mechanism (3) is further provided with a second moving template (34); a second mold station is formed between the second fixed template (4) and the second moving template (34).

[0005] For a double-station mold clamping mechanism as described above, it is characterized in that when the moving mold mechanism (3) moves towards the first fixed template (1), it is for mold clamping at the first mold station and at the same time for mold opening at the second mold station; when the moving mold mechanism (3) moves towards the second fixed template (4), it is for mold clamping at the second mold station and at the same time for mold opening at the first mold station.

[0006] Compared with the prior art, the beneficial effect of the utility model is that one forming machine can supply two sets of molds for simultaneous production, thereby greatly improving the single-machine production efficiency. One device does the work of two devices, improving the use value of the equipment and reducing the floor area. Brief Description of the Drawings

[0007] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0008] Figure 2This is the structural diagram of the moving die mechanism of the present utility model;

[0009] Figure 3 This is the schematic diagram of the first embodiment of the present utility model;

[0010] In Figures 1 to 3 wherein, the corresponding relationship between the names of each component and the reference numerals in the drawings is as follows:

[0011] 1 - First fixed template, 2 - Large rod, 3 - Moving die mechanism, 31 - First moving template, 32 - High-pressure cylinder, 321 - First oil chamber, 322 - Second oil chamber, 33 - Ejecting mechanism, 331 - Double-output shaft piston rod, 332 - First ejector rod, 333 - Second ejector rod, 34 - Second moving template, 35 - High-pressure piston, 4 - Second fixed template,

[0012] 5 - Double-station die clamping mechanism, 6 - First injection device, 7 - Second injection device, 8 - First mold, 81 - Ejector plate, 9 - Second mold, 10 - Frame. Specific embodiments

[0013] The following further describes in detail the embodiments of the present utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the working principle of the present utility model, but cannot be used to limit the scope of the present utility model.

[0014] In the description of the present utility model, unless otherwise specified, "a plurality of" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0015] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0016] First Embodiment: The present utility model is applied to a hot chamber die casting machine. The double-station die clamping mechanism (5) of the present utility model has a first injection device (6) connected to the left side of the first fixed template (1) and a second injection device (7) connected to the right side of the second fixed template (4). The first injection device (6) and the second injection device (7) are also connected to the frame (10). The first fixed template (1) and the second fixed template (4) are fixed to the frame (10). The first die station and the second die station of the double-station die clamping mechanism (5) are respectively equipped with a first die (8) and a second die (9).

[0017] In the moving die mechanism (3) of the double-station die clamping mechanism (5), in addition to including a first moving template (31) and a second moving template (34), an ejection mechanism (33) is also provided. The ejection mechanism (33) is a double-output shaft oil cylinder fixed between the first moving template (31) and the second moving template (34). The moving direction of its double-output shaft piston rod (331) is perpendicular to the die mounting surfaces of the first moving template (31) and the second moving template (34). The two ends of the double-output shaft piston rod (331) are respectively connected with a first ejector rod (332) and a second ejector rod (333). When hydraulic oil is filled into the right oil chamber of the double-output shaft oil cylinder of the ejection mechanism (33), the double-output shaft piston rod (331) moves towards the first moving template (31) direction, driving the first ejector rod (332) to push the ejector plate (81) of the first die (8) for ejecting the formed die casting. When hydraulic oil is filled into the left oil chamber of the double-output shaft oil cylinder of the ejection mechanism (33), the double-output shaft piston rod (331) moves towards the second moving template (34) direction, driving the second ejector rod (333) to push the ejector plate of the second die, ejecting the product formed in the die. The ejector plate of the second die (9) has the same structure as the ejector plate of the first die (8). Four high-pressure cylinders (32) are arranged between the first moving template (31) and the second moving template (34), and are respectively connected to the first moving template (31) and the second moving template (34) at both ends. Four large rods (2) are respectively connected and fixed to the first fixed template (1) and the second fixed template (4), and the four large rods (2) all pass through the moving die mechanism (3) and are coaxially matched with the four high-pressure cylinders (32) of the moving die mechanism (3) one by one. High-pressure pistons (35) are fixed on the four large rods (2), and are in sealed sliding fit with the high-pressure cylinders (32) to form four high-pressure oil cylinders. Under the isolation of the high-pressure pistons (35), a first oil chamber (321) and a second oil chamber (322) are formed. Filling hydraulic oil into the first oil chamber (321) can push the moving die mechanism except the high-pressure piston (35) to move along the axis of the large rod (2) towards the first fixed template (1) direction. Filling hydraulic oil into the second oil chamber (322) can push the moving die mechanism except the high-pressure piston (35) to move along the axis of the large rod (2) towards the second fixed template (4) direction.

[0018] When the part of the moving die mechanism (3) except the high-pressure piston (35) moves towards the first fixed template (1), the first die (8) installed at the first die station is closed until the first die (8) is completely closed and generates a corresponding clamping force. Then the next process is that the first injection device (6) injects liquid metal material into the first die (8). After a certain period of cooling and solidification, a die-casting part can be formed. The next process is that the part of the moving die mechanism (3) except the high-pressure piston (35) moves towards the second fixed template (4). Then the first die (8) is opened, and at the same time the second die (9) is closed until the second die (9) is completely closed and generates a corresponding clamping force. Then the next process is that the second injection device (7) injects liquid metal material into the second die (9). After a certain period of cooling and solidification, a die-casting part can be formed. During this process, the first die (8) is in the open state, and the ejection mechanism (33) operates. The first ejector rod (332) pushes the ejector plate (81) of the first die (8) to eject the formed die-casting part so that it is separated from the first die (8). This process is basically carried out simultaneously with the injection molding of the die-casting part of the second die (9). Until the demolding of the die-casting part of the first die (8) and the injection molding of the die-casting part of the second die (9) are both completed, the next process is that the part of the moving die mechanism (3) except the high-pressure piston (35) moves towards the first fixed template (1) again. The first die (8) is closed, and at the same time the second die (9) is opened. Then it is the injection molding of the first die (8), and the die-casting part formed by the second die (9) is ejected by the ejection mechanism (33) so that it is separated from the second die (9). Until the demolding of the die-casting part in the second die (9) and the injection molding of the die-casting part of the first die (8) are both completed. In this way, the moving die mechanism (3) has been making reciprocating movements, the first die (8) and the second die (9) have been opening and closing, and the opening of the first die (8) is the closing of the second die (9), and the opening of the second die (9) is the closing of the first die (8). Since most of the production process of the first die (8) is superimposed on the production process of the second die (9), its cycle period is basically the same as the cycle period when only one set of dies is used for production.

[0019] In this embodiment, two sets of dies are installed on one device for simultaneous production. Since its cycle period is basically the same as that of the prior art hot-chamber die-casting machine, but the prior art hot-chamber die-casting machine can only install one set of dies for production. Therefore, in comparison, the production efficiency of this embodiment is doubled compared with the prior art hot-chamber die-casting machine.

[0020] In the field of die molding machinery, such as injection molding machines and cold-chamber die-casting machines, the structure of their clamping mechanisms is basically the same as that of hot-chamber die-casting machines, and each device can only install one set of dies for production. Similarly, the double-station clamping mechanism can also be realized by referring to the method of this embodiment, so as to install two sets of dies for simultaneous production to improve production efficiency.

[0021] The present utility model is not limited to the above embodiments. If various modifications or variations of the present utility model do not depart from the spirit and scope of the present utility model, and provided that these modifications and variations are within the scope of the claims of the present utility model and equivalent technical scope, then the present utility model also encompasses these modifications and variations.

Claims

1. A two-station die closing mechanism, comprising a first fixed template (1), four large rods (2), and a moving die mechanism (3). The moving die mechanism (3) is provided with a first moving template (31) and an ejection mechanism (33). A first die station is formed between the first fixed template (1) and the first moving template (31), and it is characterized in that, It further includes a second fixed template (4); the moving die mechanism (3) is further provided with a second moving template (34); a second die station is formed between the second fixed template (4) and the second moving template (34); the moving die mechanism (3) is further provided with four high-pressure cylinders (32) and four high-pressure pistons (35), and both the high-pressure cylinders (32) and the high-pressure pistons (35) are arranged between the first moving template (31) and the second moving template (34).

2. The double-station mold clamping mechanism according to claim 1, characterized in that, The high-pressure piston (35) of the moving die mechanism (3) is axially connected and fixed to the large rod (2), and is in sealed sliding fit with the high-pressure cylinder (32). The two ends of the high-pressure cylinder (32) are respectively connected and fixed to the first moving template (31) and the second moving template (34), forming four high-pressure die-closing oil cylinders, which can drive the moving die mechanism (3) except the high-pressure piston (35) to slide towards the first fixed template (1) or the second fixed template (4) to realize the die-opening and die-closing functions.

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