CN219766751U - Die casting machine die opening and closing mechanism - Google Patents

Abstract

The utility model discloses a die-casting machine die opening and closing mechanism, which comprises a movable die plate, a fixed die plate, a tail plate, a quick oil cylinder, an ejection assembly and a plurality of die-closing oil cylinders, wherein the movable die plate is provided with a die-casting die; the die closing oil cylinder is a double-output-shaft oil cylinder and comprises a first cylinder barrel, a first piston and a first piston rod; the movable template is driven to move through the ejection assembly quickly, and the ejection assembly is used for ejecting the die; the utility model uses the double-output-shaft oil cylinder to replace four large rods in the traditional mold opening and closing mechanism, the double-output-shaft oil cylinder has enough long travel, the quick oil cylinder drives the movable mold plate to quickly open and close the mold, then the mold closing oil cylinder continuously presses and locks the mold, the whole mold opening and closing mechanism does not need a band-type brake mechanism, the structure of the whole machine is relatively simple, and the mold locking process can be completed more quickly. In addition, the utility model is provided with the switching device, the switching of the oil way is realized through the switching device, the quick die opening and closing are realized, the oil way setting is simplified, and the manufacturing cost of equipment is reduced.

Description

Die casting machine die opening and closing mechanism

Technical Field

The utility model relates to the technical field of die casting machines, in particular to a die opening and closing mechanism of a die casting machine.

Background

The existing die casting machine die opening and closing mechanism mainly comprises the following components: the device comprises an inclined row type machine hinge die opening and closing mechanism, a direct-pressure type hydraulic die opening and closing mechanism and a two-plate type hydraulic die opening and closing mechanism. Wherein, the inclined-row machine hinge die opening and closing mechanism drives the die plate to open and close after the inclined-row machine hinge is pushed by the oil cylinder; after the quick oil cylinder is used for quick die assembly, the band-type brake mechanism locks the pressurizing oil cylinder and the four large rods to avoid the movement of the shaft, and then the pressurizing oil cylinder outputs rated die locking force to continuously push the template to press the die at high pressure; the two-plate type hydraulic mold opening and closing mechanism is similar to the direct-pressure type hydraulic mold opening and closing mechanism, and is different in that the four pressurizing oil cylinders are directly arranged on four large rods, and when in high-pressure mold closing, the four pressurizing oil cylinders simultaneously output mold locking force to push the mold plate to perform high-pressure mold closing.

Among the three mold opening and closing mechanisms, the oblique-row type machine hinge mold opening and closing mechanism has the defects that the machine hinge occupies large space, so that the main stroke of the thimble oil is shorter, and the production and the processing of the deep cavity mold are not facilitated; the direct-pressure hydraulic mold opening and closing mechanism and the two-plate hydraulic mold opening and closing mechanism have the defect that the hydraulic circuit is too complex, so that the manufacturing cost of equipment is too high.

Disclosure of Invention

The utility model provides a die-casting machine die opening and closing mechanism, which aims to solve the problems in the prior art. In order to achieve the above purpose, the present utility model provides the following technical solutions: the die opening and closing mechanism of the die casting machine comprises a movable die plate, a fixed die plate, a tail plate, a quick oil cylinder, an ejection assembly and a plurality of die closing oil cylinders; the die closing oil cylinder is a double-output-shaft oil cylinder and comprises a first cylinder barrel, a first piston and a first piston rod; the first cylinder barrel is connected with the movable template, and the first piston is positioned in the first cylinder barrel and connected with the first piston rod; one end of the first piston rod is connected with the tail plate, and the other end of the first piston rod penetrates through the movable template and is connected with the fixed template; the quick oil cylinder and the ejection assembly are arranged between the movable template and the tail plate, the quick oil cylinder is connected with the tail plate, the ejection assembly is connected with the movable template, and the quick oil cylinder drives the movable template to move through the ejection assembly; the ejection assembly is used for the ejection operation of the die, and the movable die plate is provided with an ejection groove matched with the ejection assembly.

Preferably, the number of the mold closing cylinders is four, and the four mold closing cylinders are respectively arranged at four corners of the movable mold plate.

Preferably, the hydraulic control device further comprises two switching devices for controlling the oil paths, and the switching devices are respectively connected with the two mold closing cylinders positioned on the same side.

Preferably, the switching device comprises a switching valve, a first T-shaped pipeline and a second T-shaped pipeline, wherein the first T-shaped pipeline and the second T-shaped pipeline are respectively connected with the switching valve, two ends of the first T-shaped pipeline are respectively connected with oil inlets of the two mold clamping oil cylinders, and two ends of the second T-shaped pipeline are respectively connected with oil outlets of the two mold clamping oil cylinders.

Preferably, the switch valve is an electromagnetic directional valve.

Preferably, the quick oil cylinder comprises a second cylinder barrel and a second piston rod, the second cylinder barrel is connected with the ejection assembly, and the end part of the second piston rod is connected with the tail plate.

Preferably, the ejection assembly comprises an ejection cylinder, four guide posts, a guide plate and an ejection rod; the ejection cylinder comprises a third cylinder barrel and a third piston rod, one end of the third cylinder barrel is connected with the second cylinder barrel, the other end of the third cylinder barrel is connected with four guide posts, and the other end of the guide post is connected with the movable mould plate; the guide plates are slidably arranged on the four guide posts, one side of each guide plate is connected with the third piston rod, the other side of each guide plate is connected with the ejector rod, and the ejector rods can extend out of the ejector grooves.

Preferably, the device further comprises a detection module, wherein the detection module comprises a sensor arranged on the third cylinder barrel and a trigger rod arranged on the guide plate, and the trigger rod is provided with a first sensing block and a second sensing block which are matched with the sensor.

Preferably, the bottoms of the tail plate and the fixed die plate are respectively provided with a pair of support legs, the support legs are provided with guide holes, and the opposite guide holes are connected through a linear optical axis; the bottom of the movable template is provided with a pair of supports, and the supports are provided with arc grooves; the pair of supports and the two linear optical axes are mutually matched.

Compared with the prior art, the utility model has the beneficial effects that: the utility model uses the double-output-shaft oil cylinder to replace four large rods in the traditional mold opening and closing mechanism, the double-output-shaft oil cylinder has enough long travel, the quick oil cylinder drives the movable mold plate to quickly open and close the mold, then the mold closing oil cylinder continuously presses and locks the mold, the whole mold opening and closing mechanism does not need a band-type brake mechanism, the structure of the whole machine is relatively simple, and the mold locking process can be completed more quickly. In addition, the utility model is provided with the switching device, the switching of the oil way is realized through the switching device, the quick die opening and closing are realized, the oil way setting is simplified, and the manufacturing cost of equipment is reduced.

Drawings

FIG. 1 is a block diagram of a die opening and closing mechanism of a die casting machine according to an embodiment of the present utility model;

FIG. 2 is a side sectional view of an opening and closing mechanism of a die casting machine according to an embodiment of the present utility model;

FIG. 3 is a schematic view showing the installation effect of a switch device of a die-opening and closing mechanism of a die-casting machine according to an embodiment of the present utility model;

in fig. 1 to 3, the correspondence between the names of the respective components and the reference numerals of the drawings is:

1-moving die plate, 11-support, 12-arc groove, 2-fixed die plate, 3-tailboard, 31-support leg, 32-guiding hole, 4-quick cylinder, 41-second cylinder, 42-second piston rod, 5-ejection component, 51-ejection cylinder, 511-third cylinder, 512-third piston rod, 52-guiding column, 53-guiding plate, 54-ejection rod, 6-die cylinder, 61-first cylinder, 62-first piston, 63-first piston rod, 7-switching device, 71-switching valve, 72-first T-shaped pipeline, 73-second T-shaped pipeline, 8-detecting module, 81-sensor, 82-triggering rod, 83-first sensing block, 84-second sensing block.

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 to 3, the utility model provides a die opening and closing mechanism of a die casting machine, which comprises a movable die plate 1, a fixed die plate 2, a tail plate 3, a quick oil cylinder 4, an ejection assembly 5 and a plurality of die closing oil cylinders 6; the mold closing cylinder 6 is a double-shaft cylinder and comprises a first cylinder barrel 61, a first piston 62 and a first piston rod 63; the first cylinder 61 is connected with the movable die plate 1, and the first piston 62 is positioned inside the first cylinder 61 and connected with the first piston rod 63; one end of the first piston rod 63 is connected with the tail plate 3, and the other end passes through the movable template 1 and is connected with the fixed template 2; the quick oil cylinder 4 and the ejection assembly 5 are arranged between the movable template 1 and the tail plate 3, the quick oil cylinder 4 is connected with the tail plate 3, the ejection assembly 5 is connected with the movable template 1, and the quick oil cylinder drives the movable template 1 to move through the ejection assembly 5; the ejection assembly 5 is used for the ejection operation of the die, and the movable die plate 1 is provided with an ejection groove matched with the ejection assembly 5.

In the embodiment of the utility model, two ends of the mold closing cylinder 6 are respectively connected with the tail plate 3 and the fixed mold plate 2, so that the distance between the tail plate and the fixed mold plate is kept constant, then the first cylinder barrel 61 is connected with the movable mold plate 1, the mold closing cylinder 6 is a double-shaft cylinder, the end face of the first cylinder barrel 61 is connected with the movable mold plate 1, the first piston 62 is coaxially connected and fixed with the first piston rod 63, the first piston rod 63 transversely penetrates through two ends of the first cylinder barrel 61, and the same sectional areas of left and right oil cavities in the cylinder are ensured. When the mold clamping cylinder 6 works, the movable platen 1 is driven to move back and forth along the length direction of the first piston rod 63. In order to realize the rapid opening and closing of the movable die plate 1, the embodiment is provided with a rapid oil cylinder 4 for assisting in pushing the movable die plate 1. Specifically, the quick oil cylinder 4 is connected between the movable platen 1 and the tail platen 3 and is connected with the movable platen 1 through the ejection assembly 5, and when the mold closing oil cylinder 6 is in a non-working state, the quick oil cylinder 4 drives the movable platen 1 to rapidly move along the length direction of the first piston rod 63, so as to improve the mold opening and closing efficiency. The ejection assembly 5 is used for the ejection operation of the die, and when the die is processed, the ejection assembly 5 is started and applies thrust to the die, so that the die is convenient to separate.

The working procedure of this embodiment is as follows: during compression molding, the quick oil cylinder 4 drives the movable mold plate 1 to quickly approach the fixed mold plate 2, then the mold closing oil cylinder 6 is started and applies pressure to the movable mold plate 1 to enable the movable mold plate 1 to be close to the fixed mold plate 2, and high-pressure mold locking is continued until the die casting processing is completed. When the mold is opened, two chambers at two sides of the first piston 62 in the mold closing oil cylinder 6 are communicated, the pressures at two sides are the same, at the moment, the quick oil cylinder 4 drives the movable mold plate 1 to be far away from the fixed mold plate 2, so that quick mold opening and closing of the movable mold plate 1 are realized, and the mold is ejected out by the ejection assembly 5.

Preferably, the number of the mold clamping cylinders 6 is four, and the four mold clamping cylinders 6 are respectively arranged at four corners of the movable mold plate 1. In this embodiment, the main body of the movable platen 1 is square, the first cylinder 61 of the mold clamping cylinder 6 is installed at the corner of the movable platen 1, and the corner of the movable platen 1 is provided with a through hole through which the first piston rod 63 can pass, so when high-pressure mold clamping is required, the four mold clamping cylinders 6 move together to jointly push the movable platen 1 towards the fixed platen 2, so as to achieve the effects of pressing and locking the mold.

Preferably, the hydraulic control device further comprises two switching devices 7 for controlling the oil paths, and the switching devices 7 are respectively connected with the two mold clamping cylinders 6 positioned on the same side. In this embodiment, there are four mold closing cylinders 6 in the mold opening and closing mechanism, two on each side, and one switching device 7 is respectively disposed on each side, and each switching device 7 corresponds to two mold closing cylinders 6 on one side. The switch device 7 is used for controlling the connection or disconnection of one side oil way, and by arranging the switch device 7, the connection mode and the flow direction of the oil way can be rapidly changed, the operation of the oil way can be simplified, the switching is more accurate, and the occupied space is reduced.

Preferably, the switching device 7 includes a switching valve 71, and a first T-shaped pipeline 72 and a second T-shaped pipeline 73 connected to the switching valve 71, where two ends of the first T-shaped pipeline 72 are connected to oil inlets of the two mold clamping cylinders 6, and two ends of the second T-shaped pipeline 73 are connected to oil outlets of the two mold clamping cylinders 6. In the present embodiment, three ports of the first T-shaped pipe 72 are connected to the oil inlet of the upper mold clamping cylinder 6, the oil inlet of the lower mold clamping cylinder 6, and the on-off valve 71, respectively, and three ports of the second T-shaped pipe 73 are connected to the oil outlet of the upper mold clamping cylinder 6, the oil outlet of the lower mold clamping cylinder 6, and the on-off valve 71, respectively. The on-off valve 71 in the present embodiment plays a role of communicating two chambers of the mold clamping cylinder 6, and when rapid mold opening and closing is required, the on-off valve 71 is opened, and two oil chambers of the mold clamping cylinder 6 are communicated through an oil path of the on-off valve 71, so that the rapid cylinder 4 can rapidly push out or pull back the movable platen 1. When high-pressure die assembly is required, the switch valve 71 is closed, communication between the two oil cavities of the die assembly cylinder 6 is blocked, hydraulic oil is filled, and the die assembly cylinder 6 pushes the movable die plate 1 to complete high-pressure die assembly.

Preferably, the on-off valve 71 is an electromagnetic directional valve.

Preferably, the quick cylinder 4 includes a second cylinder 41 and a second piston rod 42, the second cylinder 41 is connected with the ejection assembly 5, and an end portion of the second piston rod 42 is connected with the tail plate 3. In this embodiment, the second piston rod 42 of the quick cylinder 4 is connected to the tail plate 3, and when the second piston rod 42 is extended, the second cylinder 41 acts on the ejector assembly 5, and then drives the ejector assembly 5 to move in a direction away from the tail plate 3, so that the movable platen 1 connected to the ejector assembly 5 is driven to move in a direction away from the tail plate 3, that is, toward the fixed platen 2. Conversely, when the second piston rod 42 is retracted, the movable platen 1 is moved in a direction away from the fixed platen 2.

Preferably, the ejection assembly 5 comprises an ejection cylinder 51, four guide posts 52, a guide plate 53 and an ejection rod 54; the ejector cylinder 51 includes a third cylinder 511 and a third piston rod 512, one end of the third cylinder 511 is connected with the second cylinder 41, the other end is connected with four guide posts 52, and the other end of the guide post 52 is connected with the movable mold plate 1; the guide plates 53 are slidably disposed on the four guide posts 52, one side of which is connected to the third piston rod 512 and the other side is connected to the ejector rod 54, and the ejector rod 54 may protrude from the ejector groove. In this embodiment, the third cylinder 511 is fixedly connected to the movable die plate 1 through the guide post 52, so that the movable die plate 1 can be driven to move when the quick cylinder 4 applies pressure to the ejector cylinder 51. The guide post 52 is provided with a guide plate 53 which can slide by oil, when the third piston rod 512 of the ejection cylinder 51 acts on the guide plate 53, the guide plate 53 can slide back and forth in the length direction of the guide post 52 and drive the ejection rod 54 to move, and the ejection rod 54 passes through the ejection groove to act on the die and eject the die.

Preferably, the device further comprises a detection module 8, the detection module 8 comprises a sensor 81 arranged on the third cylinder 511 and a trigger rod 82 arranged on the guide plate 53, and the trigger rod 82 is provided with a first sensing block 83 and a second sensing block 84 which are matched with the sensor 81. In this embodiment, the detection module 8 is configured to detect and limit the ejection distance of the ejection assembly 5, where the positions of the first sensing block 83 and the second sensing block 84 can be flexibly adjusted according to the requirement of opening and closing the mold, and the sensor 81 is used to sense the first sensing block 83 or the second sensing block 84 to generate a signal, and control the initial position and the maximum ejection position of the ejection assembly 5 through the first sensing block 83 and the second sensing block 84, so as to achieve precise control.

Preferably, the bottoms of the tail plate 3 and the fixed die plate 2 are respectively provided with a pair of support legs 31, the support legs 31 are provided with guide holes 32, and the opposite guide holes 32 are connected through a linear optical axis; the bottom of the movable template 1 is provided with a pair of supports 11, and the supports 11 are provided with arc grooves 12; the pair of supports 11 are matched with the two straight optical axes. In this embodiment, by setting the guide hole 32, the linear optical axis and the arc-shaped groove 12, the relative positions of the components of the whole mold opening and closing mechanism can be kept stable, and the whole mold opening and closing mechanism can be moved integrally so as to meet the production and processing requirements of different molds.

Compared with the prior art, the utility model has the beneficial effects that: the utility model uses the double-output-shaft oil cylinder to replace four large rods in the traditional mold opening and closing mechanism, the double-output-shaft oil cylinder has enough long travel, the quick oil cylinder drives the movable mold plate to quickly open and close the mold, then the mold closing oil cylinder continuously presses and locks the mold, the whole mold opening and closing mechanism does not need a band-type brake mechanism, the structure of the whole machine is relatively simple, and the mold locking process can be completed more quickly. In addition, the utility model is provided with the switching device, the switching of the oil way is realized through the switching device, the quick die opening and closing are realized, the oil way setting is simplified, and the manufacturing cost of equipment is reduced.

The embodiments of the utility model have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.

Claims (9)

1. The die-casting machine die opening and closing mechanism is characterized by comprising a movable die plate (1), a fixed die plate (2), a tail plate (3), a quick oil cylinder (4), an ejection assembly (5) and a plurality of die-closing oil cylinders (6); the die closing oil cylinder is a double-output-shaft oil cylinder and comprises a first cylinder barrel (61), a first piston (62) and a first piston rod (63); the first cylinder barrel is connected with the movable template, and the first piston is positioned in the first cylinder barrel and connected with the first piston rod; one end of the first piston rod is connected with the tail plate, and the other end of the first piston rod penetrates through the movable template and is connected with the fixed template; the quick oil cylinder and the ejection assembly are arranged between the movable template and the tail plate, the quick oil cylinder is connected with the tail plate, the ejection assembly is connected with the movable template, and the quick oil cylinder drives the movable template to move through the ejection assembly; the ejection assembly is used for the ejection operation of the die, and the movable die plate is provided with an ejection groove matched with the ejection assembly.

2. The die casting machine mold opening and closing mechanism according to claim 1, wherein the number of the mold closing cylinders is four, and the four mold closing cylinders are respectively arranged at four corners of the movable mold plate.

3. The die casting machine die opening and closing mechanism according to claim 2, further comprising two switching devices (7) for controlling the oil paths, the switching devices being respectively connected to two mold clamping cylinders located on the same side.

4. The die casting machine die opening and closing mechanism according to claim 3, wherein the switching device comprises a switching valve (71), a first T-shaped pipeline (72) and a second T-shaped pipeline (73) which are respectively connected with the switching valve, two ends of the first T-shaped pipeline are respectively connected with oil inlets of two die clamping cylinders, and two ends of the second T-shaped pipeline are respectively connected with oil outlets of the two die clamping cylinders.

5. The die casting machine mold opening and closing mechanism according to claim 4, wherein the on-off valve is an electromagnetic directional valve.

6. The die casting machine die opening and closing mechanism according to claim 1, wherein the quick cylinder comprises a second cylinder barrel (41) and a second piston rod (42), the second cylinder barrel is connected with the ejection assembly, and the end part of the second piston rod is connected with the tail plate.

7. The die casting machine die opening and closing mechanism according to claim 6, wherein the ejection assembly comprises an ejection cylinder (51), four guide posts (52), a guide plate (53) and an ejection rod (54); the ejection cylinder comprises a third cylinder barrel (511) and a third piston rod (512), one end of the third cylinder barrel is connected with the second cylinder barrel, the other end of the third cylinder barrel is connected with four guide posts, and the other end of the guide post is connected with the movable mould plate; the guide plates are slidably arranged on the four guide posts, one side of each guide plate is connected with the third piston rod, the other side of each guide plate is connected with the ejector rod, and the ejector rods can extend out of the ejector grooves.

8. The die casting machine die opening and closing mechanism according to claim 7, further comprising a detection module (8), wherein the detection module comprises a sensor (81) arranged on the third cylinder barrel and a trigger rod (82) arranged on the guide plate, and a first sensing block (83) and a second sensing block (84) matched with the sensor are arranged on the trigger rod.

9. The die casting machine mold opening and closing mechanism according to any one of claims 1 to 8, wherein the bottom of the tail plate and the bottom of the fixed die plate are respectively provided with a pair of support legs (31), the support legs are provided with guide holes (32), and the opposite guide holes are connected through a linear optical axis; the bottom of the movable template is provided with a pair of supports (11), and arc grooves (12) are formed in the supports; the pair of supports and the two linear optical axes are mutually matched.