CN212495319U - Die assembly pressurizing mechanism - Google Patents

Die assembly pressurizing mechanism Download PDF

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Publication number
CN212495319U
CN212495319U CN202021230826.4U CN202021230826U CN212495319U CN 212495319 U CN212495319 U CN 212495319U CN 202021230826 U CN202021230826 U CN 202021230826U CN 212495319 U CN212495319 U CN 212495319U
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China
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oil
pressurizing
cylinder
way
piston
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CN202021230826.4U
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Chinese (zh)
Inventor
袁茂凯
文春领
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Liaoning Tianhai Tiancheng Equipment Manufacturing Co ltd
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Liaoning Tianhai Tiancheng Equipment Manufacturing Co ltd
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Abstract

The utility model provides a die assembly pressurizing mechanism, which comprises a pressurizing oil cylinder and a pressurizing control oil way; the pressurizing oil cylinder is arranged on an oil inlet pipeline of the mold opening and closing control oil way, one end of the pressurizing control oil way is connected with a control port of the oil filling oil cylinder, and the other end of the pressurizing control oil way is connected with an oil return pipeline of the mold opening and closing control oil way; the pressurizing oil cylinder comprises a cylinder body, one end of the cylinder body is provided with a pressurizing pressure output port, and the other end of the cylinder body is provided with a locking end cover; a pressurizing pressure input port is arranged on the locking end cover, and a pressurizing piston is arranged in the cylinder body; and an oil return assembly is arranged in the middle of the pressurizing piston, and a driving piece for driving oil leakage of the oil return assembly is arranged on the locking end cover. This practicality is with the direct mold opening and shutting control oil circuit that inserts of compound die loading mechanism common locking mechanism and between the mould hydro-cylinder that opens and shuts, just can realize the not enough time compound die pressurization function of mode locking power, improves the pressure in mode locking cylinder piston chamber to improve the mode locking power, can also guarantee not influence the original compound die process that opens and shuts simultaneously.

Description

Die assembly pressurizing mechanism
Technical Field
The utility model belongs to the technical field of die casting machine equipment, especially, relate to a compound die loading system.
Background
The most important parameter of the die casting machine is the mold clamping force, and the mold clamping force is the only parameter for defining the model of the die casting machine. The mold locking force is the locking force of the die casting machine mold locking mechanism to the mold. For a certain model of die casting machine, the mold locking force is determined, a common mold closing mechanism mostly adopts two high-pressure oil pipes to connect a mold opening and closing control oil way with a piston cavity and a piston rod cavity of a mold closing cylinder, the mold closing piston is made to advance or retreat through reversing of a reversing valve, thereby driving the mold opening and closing mechanism to open or close the mold, due to the reduction of the performance of the die casting machine or the reduction of the performance of the die casting machine after the die casting machine is used for a period of time, or due to the reasons that a projection mold of the mold installed on the die casting machine is too large and the like, the mold expanding caused by insufficient mold locking force can be caused to generate mold fire running, the quality of a die casting piece is influenced, even.
SUMMERY OF THE UTILITY MODEL
The problem that this practicality will be solved aims at overcoming the defect that exists among the above-mentioned prior art, provides a compound die loading system.
In order to solve the technical problem, the technical scheme of the utility model is realized as follows:
a mold closing pressurizing mechanism comprises a pressurizing oil cylinder and a pressurizing control oil way; the pressurizing oil cylinder is arranged on an oil inlet pipeline of the mold opening and closing control oil way, one end of the pressurizing control oil way is connected with a control port of the oil filling oil cylinder, and the other end of the pressurizing control oil way is connected with an oil return pipeline of the mold opening and closing control oil way;
the pressurizing oil cylinder comprises a cylinder body, one end of the cylinder body is provided with a pressurizing pressure output port, and the other end of the cylinder body is provided with a locking end cover; a pressurizing pressure input port is arranged on the locking end cover, and a pressurizing piston is arranged in the cylinder body;
an oil return assembly is arranged in the middle of the pressurizing piston, and a driving piece for driving oil drainage of the oil return assembly is arranged on the locking end cover;
the pressurization control oil path comprises a one-way valve for controlling oil inlet of one side of the oil return pipeline to the pressurization oil cylinder and a control valve for controlling the oil pressure of the pressurization oil cylinder.
Furthermore, a pressurizing pressure output port of the pressurizing oil cylinder is communicated with a rodless cavity of the mold opening and closing oil cylinder, and a pressurizing pressure input port of the pressurizing oil cylinder is communicated with an oil feeding pipeline on the mold opening and closing control oil way.
Furthermore, the inner diameter of a first cavity at one end of the cylinder body, which corresponds to the boost pressure output port, is smaller than the inner diameter of a second cavity at the other side; the pressurizing piston comprises a middle connecting body, a first piston body is arranged at one end, corresponding to the first cavity, of the middle connecting body, and a second piston body is arranged at one end, corresponding to the second cavity, of the middle connecting body.
Further, the control valve includes a sequence valve and an overflow valve.
Furthermore, a check valve is respectively arranged in parallel corresponding to the sequence valve and the overflow valve.
Further, a central cavity is formed in the middle of the pressurizing piston, and the oil return assembly comprises an oil return one-way valve arranged in the central cavity.
Furthermore, the driving piece comprises an ejection rod which is arranged on the inner side of the locking end cover and used for opening the oil return one-way valve, when the piston moves towards one side of the locking end cover, the ejection rod can abut against a valve core of the oil return one-way valve to open the valve core, and oil return from the boost pressure output port to one side of the boost pressure input port is achieved.
Further, the oil return check valve is arranged at one end, different from the supercharging pressure input port, in the central cavity.
The utility model has the advantages and positive effects that:
in order to improve the mold clamping force of the mold clamping mechanism, the pressure of the piston cavity during mold clamping needs to be improved, the mold clamping pressurizing mechanism provided by the utility model can realize the mold clamping pressurizing function when the mold clamping force is insufficient, and the pressure of the piston cavity of the mold clamping oil cylinder is improved, so that the mold clamping force is improved, and the original mold opening and closing process can be ensured not to be influenced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a pressurized cylinder in the present application;
fig. 3 is a schematic view of a cylinder body portion of the pressurizing cylinder of the present invention;
fig. 4 is a schematic view of a pressurizing piston in the present invention.
In the figure:
1-a pressurizing oil cylinder; 2-pressurizing the control oil path; 3-oil inlet pipeline; 4-opening and closing the mould oil cylinder; 5-oil return pipeline; 6-cylinder body; 7-a boost pressure output port; 8-locking the end cover; 9-a boost pressure input port; 10-a booster piston; 11-an oil return assembly; 12-a drive member; 13-pressurization control oil way check valve; 14-return check valve; 15-a first cavity; 16-a second cavity; 17-a middle linker; 18-a first piston body; 19-a second piston body; 20-sequence valve; 21-relief valve; 22-a central cavity; 23-a valve body; 24-a valve core; 25-ring cavity; 26-opening and closing the die control oil way; 27-a piston cavity of the refueling cylinder; 28-a plenum chamber; 29-opening and closing a piston cavity of the die cylinder; 30-piston rod cavity of die opening and closing oil cylinder; 31-a control port; 32-solenoid control valve.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The following is a detailed description of specific embodiments of the present invention.
A mold closing pressurizing mechanism, as shown in figures 1 to 4, comprises a pressurizing oil cylinder 1 and a pressurizing control oil path 2; the pressurizing oil cylinder is arranged on an oil inlet pipeline 3 of the die opening and closing control oil way, one end of the pressurizing control oil way is connected with a control port 31 of the oil filling oil cylinder, and the other end of the pressurizing control oil way is connected with an oil return pipeline 5 of the die opening and closing control oil way;
the pressurizing oil cylinder comprises a cylinder body 6, one end of the cylinder body is provided with a pressurizing pressure output port 7, and the other end of the cylinder body is provided with a locking end cover 8; a pressurizing pressure input port 9 is arranged on the locking end cover, and a pressurizing piston 10 is arranged in the cylinder body; the rear end of the cylinder body is in sealing fit with the locking end cover, and simultaneously is in threaded locking fit;
an oil return assembly 11 is arranged in the middle of the pressurizing piston, and a driving piece 12 for driving oil drainage of the oil return assembly is arranged on the locking end cover;
the pressurization control oil path comprises a pressurization control oil path one-way valve 13 for controlling oil feeding of one side of the oil return pipeline to the pressurization oil cylinder and a control valve for controlling the oil pressure of the pressurization oil cylinder. Typically, the control valves include a sequence valve 20 and a spill valve 21. And a check valve is respectively arranged in parallel corresponding to the sequence valve and the overflow valve.
As shown in fig. 1, the boost pressure output port 7 is connected to the piston cavity of the mold opening and closing cylinder 4, and the boost pressure input port 9 is connected to the port a of the mold opening and closing control oil passage (the middle electromagnetic control valve 32). One end of the oil return pipeline is connected with a piston rod cavity of the mold opening and closing oil cylinder, and the other end of the oil return pipeline is connected with a port B of a mold opening and closing control oil way (a middle electromagnetic control valve). The pressurizing pressure input port of the pressurizing oil cylinder is communicated with an oil feeding pipeline on the mold opening and closing control oil way, and according to the scheme shown in the attached figure 1, the pressurizing pressure input port can be connected with an A port of the electromagnetic valve through a pipeline.
The inner diameter of a first cavity 15 at one end of the cylinder body corresponding to the boosting pressure output port is smaller than the inner diameter of a second cavity 16 at the other end; the pressurizing piston comprises a middle connecting body 17, a first piston body 18 is arranged at one end of the middle connecting body corresponding to the first cavity, a second piston body 19 is arranged at one end corresponding to the second cavity, a ring cavity 25 is formed between the first piston body and the second piston body, and the ring cavity is a cavity formed between the middle connecting body and the inner wall of the cylinder body. The control port 31 is provided at (near) the location where the first and second chambers are joined.
The middle part of the supercharging piston is provided with a central cavity 22, the oil return component comprises an oil return one-way valve 14 arranged in the central cavity, and the one-way valve comprises a valve body 23 and a valve core 24 slidably mounted in an inner hole of the valve body. The driving piece comprises an ejection rod which is arranged on the inner side of the locking end cover and used for opening the oil return one-way valve, when the piston moves towards one side of the locking end cover, the ejection rod can abut against a valve core of the oil return one-way valve to open the valve core, and oil return from the boost pressure output port to one side of the boost pressure input port is achieved. To facilitate control of the return check valve, the return check valve is typically disposed at an end of the central cavity that is different from the boost pressure input port.
The pressurizing working principle of the die closing pressurizing mechanism is as follows:
an oil passage is provided in the cylinder body of the pressurizing cylinder, and the check valves V2 and V3, the relief valve V4, and the sequence valve V5 mounted thereon are connected. The input port of the sequence valve V5 is communicated with the control port 31 of the cylinder body, the control port of the sequence valve V5 is communicated with the pressurizing pressure input port on the locking end cover, when the pressure of the pressurizing pressure input port reaches the set pressure of the sequence valve V5, the input port and the output port of the sequence valve V5 are communicated, the annular cavity of the pressurizing piston is communicated with the input port and the control port of the overflow valve V4 through the control port of the cylinder body, and therefore the pressure of the annular cavity 25 of the pressurizing piston is the set pressure Pc of the overflow valve V4.
Let the boost pressure be PjAnd the input pressure of the K port is Pk, the calculation formula of the supercharging pressure is as follows:
the reset working principle of the die closing pressurizing mechanism is as follows:
when the booster piston is reset, as shown in fig. 1, pressure oil flows into the control port of the cylinder body through the oil return pipeline, the one-way valve V2 and the one-way valve V3 to push the booster piston to move rightwards; when the pressurizing piston moves to the bottom right, the ejecting rod ejects the one-way valve core to open, so that the pressurizing pressure output port and the pressurizing pressure input port form a smooth loop.
The working principle of the die opening and closing process is as follows:
when the mold is closed, the electromagnetic directional valve coil S2 of the mold opening and closing control oil path 26 is electrified, so that pressure oil of the directional valve is communicated with the pressurization pressure inlet through the port A of the mold opening and closing control oil path, the pressure oil enters the piston cavity 27 of the oiling oil cylinder, pushes open the valve core of the one-way valve in the central cavity of the pressurization piston, enters the pressurization cavity 28 and then enters the piston cavity 29 of the mold opening and closing oil cylinder, and the mold closing piston is pushed to move leftwards.
The pressurized oil in the annular chamber of the booster piston cannot flow out due to the disconnection of the sequence valve V5, and therefore the booster piston does not move; when the oil inlet pressure of the supercharging pressure inlet exceeds the set pressure of the sequence valve V5, the pressure oil in the annular cavity of the supercharging piston is drained by the set pressure of the overflow valve V4, the supercharging piston moves leftwards, the pressure of the supercharging cavity is increased to the supercharging pressure, and the valve core of the one-way valve is closed.
When the mold is opened, the electromagnetic reversing valve coil S1 of the mold opening and closing control oil way is electrified, so that pressure oil of the reversing valve flows into an oil return pipeline through the port B of the mold opening and closing control oil way, and a pressurization pressure inlet is communicated with an oil tank through the port A of the mold opening and closing control oil way, so that oil return is realized.
One oil way after the pressure oil enters the oil return pipeline enters an annular cavity of the pressurizing piston through a one-way valve V2 and a one-way valve V3 to reset the pressurizing piston, and the oil liquid of the other oil way flows into a piston rod cavity 30 of the mold opening and closing oil cylinder to push a mold opening and closing piston rod to move rightwards so as to realize mold opening movement; meanwhile, oil in the piston cavity of the opening-closing die enters a pressurization pressure outlet of the oil filling oil cylinder under the pushing of a piston rod of the opening-closing die, enters an A port of an oil passage of the opening-closing die through a pressurization pressure inlet and flows into an oil tank through a central cavity of the pressurization piston and a gap between a valve core and a valve body of a one-way valve (after ejection of an ejection rod), and oil return is finished.
This practicality is with the direct mold opening and shutting control oil circuit that inserts of compound die loading mechanism common locking mechanism and between the mould hydro-cylinder that opens and shuts, just can realize the not enough time compound die pressurization function of mode locking power, improves the pressure in mode locking cylinder piston chamber to improve the mode locking power, can also guarantee not influence the original compound die process that opens and shuts simultaneously.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof.
The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (8)

1. A compound die loading mechanism which characterized in that: comprises a pressurizing oil cylinder and a pressurizing control oil way; the pressurizing oil cylinder is arranged on an oil inlet pipeline of the mold opening and closing control oil way, one end of the pressurizing control oil way is connected with a control port of the oil filling oil cylinder, and the other end of the pressurizing control oil way is connected with an oil return pipeline of the mold opening and closing control oil way;
the pressurizing oil cylinder comprises a cylinder body, one end of the cylinder body is provided with a pressurizing pressure output port, and the other end of the cylinder body is provided with a locking end cover; a pressurizing pressure input port is arranged on the locking end cover, and a pressurizing piston is arranged in the cylinder body;
an oil return assembly is arranged in the middle of the pressurizing piston, and a driving piece for driving oil drainage of the oil return assembly is arranged on the locking end cover;
the pressurization control oil path comprises a one-way valve for controlling oil inlet of one side of the oil return pipeline to the pressurization oil cylinder and a control valve for controlling the oil pressure of the pressurization oil cylinder.
2. The clamp closing pressing mechanism according to claim 1, wherein: and a pressurizing pressure output port of the pressurizing oil cylinder is communicated with a rodless cavity of the mold opening and closing oil cylinder, and a pressurizing pressure input port of the pressurizing oil cylinder is communicated with an oil feeding pipeline on the mold opening and closing control oil way.
3. The clamp closing pressing mechanism according to claim 1, wherein: the inner diameter of a first cavity at one end of the cylinder body, which corresponds to the boost pressure output port, is smaller than the inner diameter of a second cavity at the other side; the pressurizing piston comprises a middle connecting body, a first piston body is arranged at one end, corresponding to the first cavity, of the middle connecting body, and a second piston body is arranged at one end, corresponding to the second cavity, of the middle connecting body.
4. The clamp closing pressing mechanism according to claim 1, wherein: the control valve comprises a sequence valve and an overflow valve.
5. The clamp pressing mechanism according to claim 4, wherein: and one-way valves are respectively arranged corresponding to the sequence valve and the overflow valve.
6. The clamp closing pressing mechanism according to claim 1, wherein: the middle part of the booster piston is provided with a central cavity, and the oil return component comprises an oil return one-way valve arranged in the central cavity.
7. The clamp closing pressing mechanism according to claim 6, wherein: the driving piece comprises an ejection rod which is arranged on the inner side of the locking end cover and used for opening the oil return one-way valve.
8. The clamp closing pressing mechanism according to claim 6, wherein: the oil return one-way valve is arranged at one end of the central cavity, which is different from the pressurizing pressure input port.
CN202021230826.4U 2020-06-30 2020-06-30 Die assembly pressurizing mechanism Active CN212495319U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021230826.4U CN212495319U (en) 2020-06-30 2020-06-30 Die assembly pressurizing mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021230826.4U CN212495319U (en) 2020-06-30 2020-06-30 Die assembly pressurizing mechanism

Publications (1)

Publication Number Publication Date
CN212495319U true CN212495319U (en) 2021-02-09

Family

ID=74433708

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021230826.4U Active CN212495319U (en) 2020-06-30 2020-06-30 Die assembly pressurizing mechanism

Country Status (1)

Country Link
CN (1) CN212495319U (en)

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