CN115889731B - Material beating control method and material beating system of large die casting machine - Google Patents
Material beating control method and material beating system of large die casting machine Download PDFInfo
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- CN115889731B CN115889731B CN202310167414.2A CN202310167414A CN115889731B CN 115889731 B CN115889731 B CN 115889731B CN 202310167414 A CN202310167414 A CN 202310167414A CN 115889731 B CN115889731 B CN 115889731B
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Abstract
The invention relates to the technical field of die casting machines, and particularly discloses a material beating control method and a material beating system of a large die casting machine, wherein the material beating system comprises a pressing injection oil cylinder, an oil inlet oil way, an oil outlet oil way, a pressurizing oil way and an oil supplementing oil way, the material beating control method comprises three steps of slow pressure, fast pressure and pressurizing, when the slow pressure starts, a fast pressure accumulator supplies oil for a rodless cavity through two first servo valves which are arranged in parallel, the hydraulic flow can be accurately controlled, the pressure built in the rodless cavity is prevented from being too fast, meanwhile, the oil drain of the rod cavity in the slow pressure stage only adopts a second servo valve with the drift diameter of 25 or 32, and the response speed is high due to the fact that the drift diameter of the second servo valve is small, the hydraulic oil in the rod cavity can be timely drained when the slow pressure starts, starting impact is avoided, the fast pressure accumulator adopts the two first servo valves which are arranged in parallel to supply hydraulic oil for the rodless cavity, the drift diameters of the two first servo valves are 80 or 100, and the response speed and the through-flow capacity can be ensured.
Description
Technical Field
The invention relates to the technical field of die casting machines, in particular to a material beating control method and a material beating system of a large die casting machine.
Background
With the progress of scientific technology and industrial production, especially with the development of industries such as automobiles, motorcycles, household appliances and the like, the demand for molded metal parts is increasing, and die casting machines are also popularized, and the principle of die casting is as follows: and (3) hydraulically injecting the molten metal into a mold under the action of pressure to cool and mold, and opening the mold to obtain the solid metal casting. Wherein, the process of molten metal injection is realized through a material beating system of the die casting machine, and the material beating system plays a pushing role.
In the prior art, a material beating system of a die casting machine generally comprises a pressing injection cylinder, a quick pressing accumulator, a pressurizing accumulator and an oil tank, the pressing injection process generally comprises three stages of slow pressing, quick pressing and pressurizing, during the slow pressing and quick pressing stages, the quick pressing accumulator is used for introducing hydraulic oil into a rodless cavity of the pressing injection cylinder through a switch valve, hydraulic oil in a rod cavity of the pressing injection cylinder flows into the oil tank through a servo valve with a large drift diameter, but during the slow pressing starting stage, the switch valve cannot adjust hydraulic flow, the oil pressure in the rodless cavity is too fast to build up, the response speed of the servo valve with the large drift diameter is slow, the hydraulic oil in the rod cavity is compressed, starting impact is caused, braking is required to be finished at the end of the quick pressing, and the switch valve cannot be partially closed, meanwhile, the response speed of the large servo valve is slow, the rodless cavity is continuously pressurized, the back pressure in the rod cavity is too slow to build up, the braking efficiency is low, even the braking is out of control, and the product quality is influenced.
Disclosure of Invention
The invention is made in consideration of the problems, and aims to provide a material beating control method and a material beating system of a large die casting machine, which can avoid starting impact, have high braking efficiency and ensure product quality.
In order to achieve the above purpose, the invention provides a method for controlling the material of a large die casting machine, comprising a shot oil cylinder, an oil inlet path, an oil outlet path and a pressurizing path, wherein the shot oil cylinder is provided with a rodless cavity and a rod cavity, the oil inlet path comprises a fast pressure accumulator and two first servo valves arranged in parallel, the oil outlet path comprises an oil tank, a second servo valve and a third servo valve arranged in parallel, and the diameter of the second servo valve is smaller than that of the third servo valve, and the method comprises the following steps of;
s1: slow press: the two first servo valves are controlled to be partially opened, high-pressure oil in the quick pressure accumulator enters the rodless cavity through the two first servo valves, a piston rod in the rod cavity is driven to move towards the side far away from the rodless cavity at a first speed, at the moment, the second servo valve is controlled to be opened, the third servo valve is controlled to be closed, and hydraulic oil in the rod cavity enters the oil tank through the second servo valve;
s2: and (3) quick pressing: the two first servo valves are controlled to be fully opened, high-pressure oil in the quick pressure accumulator enters the rodless cavity through the two first servo valves, a piston rod in the rod cavity is driven to move towards the side far away from the rodless cavity at a second speed, the second speed is higher than the first speed, at the moment, the second servo valve and the third servo valve are controlled to be opened, and hydraulic oil in the rod cavity enters the oil tank through the second servo valve and the third servo valve;
s3: pressurizing: and after the quick pressure is finished, controlling a pressurizing oil way to pressurize the rodless cavity.
According to the material beating control method of the large die casting machine, the range of the first speed is 0.05-0.7m/s, and the range of the second speed is 0.7-10 m/s.
According to the above-mentioned method for controlling the material of the large die casting machine, the diameters of the two first servo valves are 80 or 100.
According to the above-mentioned method for controlling the material of the large die casting machine, the step S2 further includes:
and (3) braking: and after the piston rod moves at the second speed for a preset time, controlling the two first servo valves to be partially closed, controlling the second servo valve and the third servo valve to be completely closed, and supplementing oil to the rod cavity through an oil supplementing valve until the piston rod stops moving and the quick pressing is finished.
According to the above-mentioned method for controlling the material of the large die casting machine, the diameter of the second servo valve is 25 or 32, and the diameter of the third servo valve is 80.
The material beating system of the large die casting machine comprises a pressing oil cylinder, an oil inlet oil way and an oil outlet oil way, wherein a rodless cavity and a rod cavity are arranged on the pressing oil cylinder, and a piston rod is arranged in the rod cavity;
the oil inlet oil way comprises two first servo valves and a quick pressure accumulator, oil outlets of the quick pressure accumulator are simultaneously communicated with oil inlets of the two first servo valves, and oil outlets of the two first servo valves are communicated with the oil inlet of the rodless cavity;
the oil outlet circuit comprises an oil tank, a second servo valve and a third servo valve, wherein the oil inlets of the second servo valve and the third servo valve are communicated with the oil outlet of the rod cavity, and the oil outlets of the second servo valve and the third servo valve are communicated with the oil inlet of the oil tank, and the drift diameter of the second servo valve is smaller than that of the third servo valve.
According to the material beating system of the large die casting machine, the diameters of the two first servo valves are 80 or 100, the diameter of the second servo valve is 25 or 32, and the diameter of the third servo valve is 80.
According to the material beating system of the large die casting machine, the material beating system further comprises a pressurizing oil circuit and an oil supplementing oil circuit, wherein the pressurizing oil circuit is used for providing pressurizing for the rodless cavity, the oil supplementing oil circuit comprises an oil supplementing valve, and an oil outlet of the oil supplementing valve is communicated with an oil inlet of the rod cavity.
According to the material beating system of the large die casting machine, the rodless cavity comprises a first cavity close to the piston rod and a second cavity far away from the piston rod, a communication flow channel is arranged between the first cavity and the second cavity, and the two first servo valves are communicated with the oil inlets of the second cavity.
According to the material beating system of the large die casting machine, the injection oil cylinder is internally provided with the sealing one-way valve and the push rod, the sealing one-way valve is arranged in the first cavity through the spring, the spring can drive the sealing one-way valve to close the communication flow passage, and the push rod is used for supporting the sealing one-way valve.
The invention has the following beneficial effects:
1. when slow pressure starts, the fast pressure accumulator supplies oil to the rodless cavity through the two first servo valves which are arranged in parallel, so that hydraulic flow can be accurately controlled, the situation that the built-in pressure of the rodless cavity is too fast is avoided, meanwhile, the oil is discharged from the rodless cavity in the slow pressure stage only by adopting the second servo valve with the drift diameter of 25 or 32, and the response speed of the second servo valve is high because the drift diameter of the second servo valve is smaller, so that hydraulic oil in the rodless cavity can be timely discharged when slow pressure starts, and starting impact is avoided;
2. the quick pressure accumulator adopts two first servo valves which are arranged in parallel to provide hydraulic oil for the rodless cavity, and the drift diameters of the two first servo valves are 80 or 100, so that the response speed can be ensured, and the flow capacity can be ensured;
3. when in a quick-pressure braking stage, the two first servo valves are partially closed, hydraulic oil flowing into the rodless cavity is reduced, meanwhile, the second servo valve and the third servo valve are controlled to be closed in time, oil is supplemented to the rod cavity through the oil supplementing valve, back pressure is quickly built in the rod cavity, and therefore braking efficiency is improved, and product forming quality is guaranteed.
Drawings
FIG. 1 is a schematic diagram of a material beating system according to the present embodiment;
fig. 2 is a flowchart of a method for controlling the beating according to the present embodiment.
In the figure:
1. a shot cylinder; 11. a rodless cavity; 111. a first cavity; 112. a second cavity; 12. a rod cavity is arranged; 13. a piston rod; 14. sealing the one-way valve; 141. a spring; 15. a push rod;
2. an oil inlet oil path; 21. a fast pressure accumulator; 22. a first servo valve;
3. an oil outlet circuit; 31. a second servo valve; 32. a third servo valve; 33. an oil tank;
4. a supercharging oil path;
5. an oil supplementing oil way; 51. and an oil supplementing valve.
Description of the embodiments
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1, a material beating system of a large die casting machine comprises an injection cylinder 1, an oil inlet oil path 2 and an oil outlet oil path 3, wherein the oil inlet oil path 2 is used for providing hydraulic oil for the injection cylinder 1, driving the injection cylinder 1 to perform injection action, and an oil return oil path is used for discharging the hydraulic oil in the injection cylinder 1.
The injection cylinder 1 is provided with a rodless cavity 11 and a rod cavity 12, a piston rod 13 is arranged in the rod cavity 12, an oil inlet oil way 2 comprises two first servo valves 22 and a fast pressure accumulator 21, oil outlets of the fast pressure accumulator 21 are simultaneously communicated with oil inlets of the two first servo valves 22, and oil outlets of the two first servo valves 22 are communicated with the oil inlet of the rodless cavity 11; the oil outlet circuit 3 comprises an oil tank 33, a second servo valve 31 and a third servo valve 32, wherein the oil inlets of the second servo valve 31 and the third servo valve 32 are communicated with the oil outlet of the rod cavity 12, and the oil outlets of the second servo valve 31 and the third servo valve 32 are communicated with the oil inlet of the oil tank 33, wherein the drift diameter of the second servo valve 31 is smaller than that of the third servo valve 32; in this embodiment, the fast pressure accumulator 21 provides hydraulic oil for the rodless cavity 11 of the injection cylinder 1 through two first servo valves 22 arranged in parallel, so as to drive the piston rod 13 in the rod cavity 12 to move to a side far away from the rodless cavity 11, in this process, hydraulic oil in the injection cylinder 1 is discharged through the second servo valve 31 and the third servo valve 32, since the two first servo valves 22 are used for supplying oil to the rodless cavity 11, the maximum flow rate of the oil supply is the sum of the paths of the two first servo valves 22, i.e. the path of each first servo valve 22 can be relatively smaller, under the condition of ensuring the flow capacity of the oil inlet oil path 2, the response capacity can be improved, and in the slow pressure starting stage, the two first servo valves 22 can be controlled to be partially opened, the instantaneous injection of hydraulic oil can be reduced, meanwhile, in the slow pressure starting stage, the oil return path can be only used for the second servo valve 31, the maximum flow rate of the oil in the rod cavity 12 can be rapidly discharged to be matched with the two first servo valves 22, and the impact can be avoided.
The hydraulic oil in the rod cavity 12 enters the oil tank 33 through the second servo valve 31 and the third servo valve 32, so that the hydraulic oil is discharged.
Specifically, the diameters of the two first servo valves 22 are 80 or 100, so that the maximum oil inlet flow rate can be ensured, the diameter of the second servo valve 31 is 25 or 32, the diameter of the third servo valve 32 is 80, and the maximum oil outlet flow rate can be ensured in the quick-pressure stage.
In order to improve the product quality, after the end of the quick pressing, a pressurizing process is required, so in this embodiment, the device further includes a pressurizing oil path 4, where the pressurizing oil path 4 is used to provide pressurizing for the rodless cavity 11, so as to ensure that the piston is maintained at the product forming position, and ensure the product forming quality.
Specifically, the boost oil path 4 includes a boost accumulator, a boost cylinder, and a switch valve and a fourth servo valve that are arranged in parallel, where the boost accumulator provides hydraulic oil for front and rear chambers of the boost cylinder through the switch valve or the fourth servo valve, so as to maintain hydraulic pressure in the rodless chamber 11, so as to achieve the purpose of boost.
When the quick pressure is about to be ended, the piston rod 13 needs to be braked, in order to quickly establish back pressure in the rod cavity 12, the material beating system further comprises an oil supplementing oil way 5, the oil supplementing oil way 5 comprises an oil supplementing valve 51, an oil outlet of the oil supplementing valve 51 is communicated with an oil inlet of the rod cavity 12, and when the quick pressure is braked, the back pressure can be quickly established in the rod cavity 12 through the oil supplementing valve 51 to supplement oil for the rod cavity 12, so that the braking efficiency is improved.
Specifically, the rodless cavity 11 includes a first cavity 111 close to the piston rod 13 and a second cavity 112 far away from the piston rod 13, a communication flow channel is provided between the first cavity 111 and the second cavity 112, two first servo valves 22 are both communicated with an oil inlet of the second cavity 112, a sealing check valve 14 and a push rod 15 are further provided in the injection cylinder 1, the sealing check valve 14 is disposed in the first cavity 111 through a spring 141, the spring 141 can drive the sealing check valve 14 to close the communication flow channel, the push rod 15 is used for supporting the sealing check valve 14, high-pressure oil in the first cavity 111 is prevented from flushing the sealing check valve in a pressurizing stage, and hydraulic oil in the second cavity 112 moves to the first cavity 111 through the sealing check valve 14 in a slow-pressure stage and a fast-pressure stage, so that the piston rod 13 is pushed to move.
As shown in fig. 1 and 2, a material-beating control method of a large die casting machine is used for controlling a material-beating system to work, wherein the material-beating system comprises a pressing-jetting oil cylinder 1, an oil inlet oil path 2, an oil outlet oil path 3 and a pressurizing oil path 4, a rodless cavity 11 and a rod cavity 12 are arranged on the pressing-jetting oil cylinder 1, a piston rod 13 is arranged in the rod cavity 12, the oil inlet oil path 2 comprises a quick-pressing energy accumulator 21 and two first servo valves 22 which are arranged in parallel, the oil outlet oil path 3 comprises an oil tank 33, a second servo valve 31 and a third servo valve 32 which are arranged in parallel, and the diameter of the second servo valve 31 is smaller than that of the third servo valve 32.
Specifically, the material beating control method specifically comprises the following steps:
s1: slow press: the two first servo valves 22 are controlled to be partially opened, high-pressure oil in the fast pressure accumulator 21 enters the rodless cavity 11 through the two first servo valves 22 and drives the piston rod 13 in the rod cavity 12 to move towards the side far away from the rodless cavity 11 at a first speed, at the moment, the second servo valve 31 is controlled to be opened, the third servo valve 32 is controlled to be closed, hydraulic oil in the rod cavity 12 enters the oil tank 33 through the second servo valve 31, namely, in a slow pressure stage, the fast pressure accumulator 21 supplies oil through the two first servo valves 22 which are partially opened, the oil pressure in the rodless cavity 11 can be ensured not to be rapidly increased during slow pressure starting, meanwhile, oil discharging of the rod cavity 12 is performed through the second servo valve 31 with a relatively small through diameter, the response speed is high, the second servo valve 31 can be rapidly opened during oil supplying of the fast pressure accumulator 21, and further hydraulic oil in the rod cavity 12 can be released, the second servo valve 31 and the two first servo valves 22 can be matched for use, and starting impact of the slow pressure starting stage can be avoided.
S2: and (3) quick pressing: the two first servo valves 22 are controlled to be fully opened, high-pressure oil in the fast pressure accumulator 21 enters the rodless cavity 11 through the two first servo valves 22 and drives the piston rod 13 in the rod cavity 12 to move towards the side far away from the rodless cavity 11 at a second speed, the second speed is higher than the first speed, at the moment, the second servo valve 31 and the third servo valve 32 are controlled to be opened, hydraulic oil in the rod cavity 12 enters the oil tank 33 through the second servo valve 31 and the third servo valve 32, the movement speed of the piston rod 13 in the fast pressure stage is higher than the movement speed of the piston rod 13 in the slow pressure stage, and the oil inlet speed of the rodless cavity 11 and the oil discharge speed of the rod cavity 12 are greatly improved, so that the two first servo valves 22 need to be fully opened and the second servo valve 31 and the third servo valve 32 need to be fully opened.
S3: pressurizing: after the quick pressing is finished, the pressurizing oil way 4 is controlled to pressurize the rodless cavity 11, so that the piston rod 13 keeps the position, and the production quality of products is improved.
Specifically, in step S1 and step S2, the first speed is in the range of 0.05-0.7m/S, i.e. the injection speed of the piston rod 13 in the slow-pressure stage is in the range of 0.05-0.7m/S, the second speed is in the range of 0.7-10m/S, and the injection speed of the piston rod 13 in the fast-pressure stage is in the range of 0.7-10 m/S.
The step S2 further includes:
and (3) braking: after the piston rod 13 moves at the second speed for a preset time, the two first servo valves 22 are controlled to be partially closed, the second servo valve 31 and the third servo valve 32 are controlled to be completely closed, the oil is supplemented to the rod cavity 12 through the oil supplementing valve 51 until the piston rod 13 stops moving, the quick pressing is finished, the preset time is determined by the second speed under the condition that the diameter of the charging barrel is fixed, namely, braking is required to be carried out when the quick pressing is about to be finished, at the moment, firstly, the oil inlet amount of the rodless cavity 11 is reduced, secondly, the back pressure is built in the rod cavity 12, and in order to improve the back pressure building speed in the rod cavity 12, the second servo valve 31 and the third servo valve 32 are closed, and the oil is supplemented to the rod cavity 12 through the oil supplementing valve 51.
The technical scheme of the invention is explained in detail above with reference to the accompanying drawings, and the described embodiments are used for helping to understand the idea of the invention. The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions in a similar manner without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, descriptions such as those referred to herein as "first," "second," "a," and the like are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or an implicit indication of the number of features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical solutions of the embodiments of the present invention may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present invention.
Claims (5)
1. The material beating control method of the large die casting machine comprises a pressing injection oil cylinder, an oil inlet oil way, an oil outlet oil way and a pressurizing oil way, wherein a rodless cavity and a rod cavity are arranged on the pressing injection oil cylinder, the oil inlet oil way comprises a quick pressure energy accumulator and two first servo valves which are arranged in parallel, the oil outlet oil way comprises an oil tank, a second servo valve and a third servo valve which are arranged in parallel, the diameter of the second servo valve is smaller than that of the third servo valve, the diameters of the two first servo valves are 80 or 100, the diameter of the second servo valve is 25 or 32, and the diameter of the third servo valve is 80;
s1: slow press: the two first servo valves are controlled to be partially opened, high-pressure oil in the quick pressure accumulator enters the rodless cavity through the two first servo valves, a piston rod in the rod cavity is driven to move towards the side far away from the rodless cavity at a first speed, at the moment, the second servo valve is controlled to be opened, the third servo valve is controlled to be closed, and hydraulic oil in the rod cavity enters the oil tank through the second servo valve;
s2: and (3) quick pressing: the two first servo valves are controlled to be fully opened, high-pressure oil in the quick pressure accumulator enters the rodless cavity through the two first servo valves, a piston rod in the rod cavity is driven to move towards the side far away from the rodless cavity at a second speed, the second speed is higher than the first speed, at the moment, the second servo valve and the third servo valve are controlled to be opened, and hydraulic oil in the rod cavity enters the oil tank through the second servo valve and the third servo valve;
and (3) braking: after the piston rod moves at a second speed for a preset time, controlling the two first servo valves to be partially closed, and controlling the second servo valve and the third servo valve to be completely closed, and supplementing oil to the rod cavity through an oil supplementing valve until the piston rod stops moving and the quick pressing is finished;
s3: pressurizing: and after the quick pressure is finished, controlling the pressurizing oil way to pressurize the rodless cavity.
2. The method of controlling a large die casting machine according to claim 1, wherein the first speed is in the range of 0.05-0.7m/s and the second speed is in the range of 0.7-10 m/s.
3. The material beating system of the large die casting machine is characterized by comprising a pressing oil cylinder, an oil inlet oil way, an oil outlet oil way, a pressurizing oil way and an oil supplementing oil way, wherein a rodless cavity and a rod cavity are arranged on the pressing oil cylinder, and a piston rod is arranged in the rod cavity;
the oil inlet oil way comprises two first servo valves and a quick pressure accumulator, oil outlets of the quick pressure accumulator are simultaneously communicated with oil inlets of the two first servo valves, and oil outlets of the two first servo valves are communicated with the oil inlet of the rodless cavity;
the oil outlet circuit comprises an oil tank, a second servo valve and a third servo valve, wherein the oil inlets of the second servo valve and the third servo valve are communicated with the oil outlet of the rod cavity, and the oil outlets of the second servo valve and the third servo valve are communicated with the oil inlet of the oil tank, and the drift diameter of the second servo valve is smaller than that of the third servo valve;
the diameter of the first servo valve is 80 or 100, the diameter of the second servo valve is 25 or 32, and the diameter of the third servo valve is 80;
the pressurizing oil way is used for pressurizing the rodless cavity, the oil supplementing oil way comprises an oil supplementing valve, an oil outlet of the oil supplementing valve is communicated with an oil inlet of the rod cavity, and the oil supplementing valve is used for supplementing oil to the rod cavity when the pressure is over.
4. A large die casting machine material feeding system according to claim 3, wherein the rodless cavity comprises a first cavity close to the piston rod and a second cavity far away from the piston rod, a communication flow passage is arranged between the first cavity and the second cavity, and both the first servo valves are communicated with the oil inlets of the second cavity.
5. The material-beating system of a large die casting machine as set forth in claim 4, wherein a sealing check valve and a push rod are further provided in the injection cylinder, the sealing check valve is disposed in the first cavity by a spring, the spring can drive the sealing check valve to close the communication flow passage, and the push rod is used for supporting the sealing check valve.
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| JP3854014B2 (en) * | 1999-07-15 | 2006-12-06 | 東芝機械株式会社 | Die casting machine injection apparatus and injection control method thereof |
| JP3713416B2 (en) * | 2000-04-24 | 2005-11-09 | 東洋機械金属株式会社 | Die casting machine |
| JP2008151299A (en) * | 2006-12-19 | 2008-07-03 | Riken Kiki Kk | Control device of hydraulic cylinder using servo valve |
| CN101239373B (en) * | 2008-03-04 | 2010-06-23 | 苏州意特机械有限公司 | Vertical pressure charging press-shoot system |
| CN101664798A (en) * | 2008-09-04 | 2010-03-10 | 广州震高机械有限公司 | Injection 'braking' device of die casting machine |
| JP2011131225A (en) * | 2009-12-24 | 2011-07-07 | Ube Machinery Corporation Ltd | Injection device and injection controlling method of die casting machine |
| JP5853876B2 (en) * | 2012-06-21 | 2016-02-09 | 株式会社豊田自動織機 | Injection device |
| CN112032114A (en) * | 2020-09-07 | 2020-12-04 | 宁波力劲科技有限公司 | Closed-loop real-time control system and control method for pressurization pressure of die casting machine |
| CN113426981B (en) * | 2021-08-26 | 2021-11-23 | 广东伊之密精密机械股份有限公司 | Injection speed reducer and die casting equipment |
| CN215661712U (en) * | 2021-09-29 | 2022-01-28 | 无锡海天机械有限公司 | Anti-rebound control oil way of injection molding machine |
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