CN218542761U - Band-type brake hydraulic control system of two-plate type injection molding machine - Google Patents
Band-type brake hydraulic control system of two-plate type injection molding machine Download PDFInfo
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- CN218542761U CN218542761U CN202220851535.XU CN202220851535U CN218542761U CN 218542761 U CN218542761 U CN 218542761U CN 202220851535 U CN202220851535 U CN 202220851535U CN 218542761 U CN218542761 U CN 218542761U
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Abstract
The utility model discloses a two-plate injection molding machine band-type brake hydraulic control system, which comprises an oil pump, an electromagnetic directional valve and a detection unit, wherein the output end of the oil pump is communicated with a port P of the electromagnetic directional valve, and one of a rodless cavity and a rod cavity of a band-type brake oil cylinder on each pull rod of a two-plate machine is communicated with a port A of the electromagnetic directional valve; a proportional speed regulating valve is arranged between each band-type brake oil cylinder and the port A of the electromagnetic directional valve, the other of the rodless cavity and the rod cavity of each band-type brake oil cylinder is communicated with the port B of the electromagnetic directional valve, and the port T of the electromagnetic directional valve is connected with an oil tank of the oil return pump. The detection unit is used for detecting whether position errors occur to the pistons of the contracting brake oil cylinders and adjusting the valve ports of the proportional speed regulating valves according to the detection results of the detection unit, so that the contracting brake oil cylinders are controlled to have the same speed and the contracting brakes are controlled to have the same action, the opening or closing actions of the contracting brakes are consistent, and the synchronous precision and the position precision of the contracting brake actions are effectively improved.
Description
Technical Field
The utility model relates to an injection molding machine technical field especially relates to a two board-like injection molding machine band-type brake hydraulic control systems.
Background
At present, the mold opening and closing of a two-plate injection molding machine (a two-plate machine) is a cyclic process, and when the two-plate injection molding machine opens a mold, a movable mold plate is separated from a pull rod; when the die is closed, the movable die plate and the pull rod are locked through a mechanism; this mechanism is referred to as a band-type brake mechanism on two-plate machines. The internal contracting brake mechanism of the two-plate machine is a nut which is responsible for fixing the pull rod and the movable template, and the contracting brake needs to be switched on and switched off due to the fact that mold opening and mold closing are needed. Therefore, the accurate control of the position of the internal contracting brake of the two-board machine is the core of the performance of the whole two-board machine. The contracting brake of the two-plate machine controls the opening and closing actions of the contracting brake through a hydraulic oil circuit. However, in a traditional contracting brake hydraulic control oil circuit, a solenoid directional valve is used for controlling contracting brake oil cylinders on pull rods of two trigger machines to realize the opening and closing actions of contracting brakes, but because high-pressure oil has certain pressure loss and leakage in the process of oil circuit conveying, the contracting brake actions on the pull rods are asynchronous, so that the contracting brake oil cylinders do not act uniformly when the contracting brakes are closed and blocked.
SUMMERY OF THE UTILITY MODEL
To prior art not enough, the utility model aims to provide a two board-like injection molding machine band-type brake hydraulic control systems, it can make the band-type brake hydro-cylinder realize that the band-type brake action is synchronous, effectively promotes the synchronous precision of band-type brake action, avoids the band-type brake hydro-cylinder to move inconsistent and produce the dead phenomenon of card when the compound die combined floodgate.
The purpose of the utility model is realized by adopting the following technical scheme:
the contracting brake hydraulic control system of the two-plate injection molding machine comprises an oil pump and an electromagnetic directional valve, wherein the output end of the oil pump is communicated with a port P of the electromagnetic directional valve, and one of a rodless cavity and a rod cavity of a contracting brake oil cylinder on each pull rod of the two-plate machine is communicated with a port A of the electromagnetic directional valve; the detection unit is used for detecting whether position errors occur to the piston of each band-type brake oil cylinder and adjusting the valve port of each proportional speed control valve according to the detection result of the detection unit so as to control the band-type brake oil cylinders to have the same speed and control the band-type brake to act consistently, the other of the rodless cavity and the rod cavity of each band-type brake oil cylinder is communicated with the port B of the electromagnetic directional valve, and the port T of the electromagnetic directional valve is connected back to the oil tank of the oil pump.
Further, the utility model discloses a two board-like injection molding machine band-type brake hydraulic control systems is still including the air-vent valve, the air-vent valve sets up the output of oil pump with between the P mouth of magenetic exchange valve, the air-vent valve is used for adjusting the entering pressure oil in the magenetic exchange valve is with the pressure.
Further, an oil return path of the pressure regulating valve is connected back to an oil tank of the oil pump.
Further, a pressure detection device is arranged between the pressure regulating valve and the port P of the electromagnetic directional valve, and the pressure detection device is used for detecting the pressure of pressure oil entering the electromagnetic directional valve.
Further, the utility model discloses a two board-like injection molding machine band-type brake hydraulic control systems is still including main oil inlet pipe way, main oil inlet pipe way is used for the intercommunication the output of oil pump with the P mouth of electromagnetic directional valve, air-vent valve, pressure measurement all set up main oil inlet pipe is on the road.
Further, the utility model discloses a two board-like injection molding machine band-type brake hydraulic control systems is still including the main oil return pipeline, the first end intercommunication of main oil return pipeline the oil return opening of air-vent valve with the T mouth of electromagnetic directional valve, the second termination of main oil return pipeline returns the oil tank of oil pump.
Furthermore, a cooler is arranged on the main oil return pipeline and used for cooling oil which flows back into the oil tank.
Further, the utility model discloses a two board-like injection molding machine band-type brake hydraulic control system is still including first liquid accuse check valve and second liquid accuse check valve, the rodless chamber of each band-type brake hydro-cylinder with through first liquid accuse check valve intercommunication between the A mouth of electromagnetic directional valve, the pole chamber of each band-type brake hydro-cylinder with pass through between the B mouth of electromagnetic directional valve the second liquid accuse check valve intercommunication.
Further, the utility model discloses a two board-like injection molding machine band-type brake hydraulic control system is still including first oil pipe way and a plurality of branch oil pipe way, divide the quantity on oil pipe way with the quantity of band-type brake hydro-cylinder is the same, the first end and the first liquid accuse check valve intercommunication on first oil pipe way, the second end and the first end intercommunication on each branch oil pipe way on first oil pipe way, the second end of each branch oil pipe way and the rodless chamber intercommunication of each band-type brake hydro-cylinder.
Further, the utility model discloses a two board-like injection molding machine band-type brake hydraulic control system is still including second oil pipe way, the first end of second oil pipe way with the second hydraulic control check valve intercommunication, the second end of second oil pipe way and the pole chamber intercommunication that has of each band-type brake hydro-cylinder.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model discloses when using, switch over the action of opening and shutting of band-type brake through the solenoid directional valve control band-type brake hydro-cylinder, the action of opening and shutting finishes the pressure oil reflux oil tank of back band-type brake hydro-cylinder, whether position error appears in the piston that detects each band-type brake hydro-cylinder through detecting element and adjusts the valve port of each proportional speed control valve through detecting element's testing result, with each band-type brake hydro-cylinder speed of control the same and control each band-type brake action unanimously, thereby the action of the opening brake or combined floodgate of each band-type brake is unanimous in reality, effectively promote the synchronous precision and the position precision of band-type brake action, can avoid the band-type brake hydro-cylinder to move when the combined floodgate simultaneously and produce the dead phenomenon of card.
Drawings
Fig. 1 is a schematic structural diagram of a band-type brake hydraulic control system according to a first embodiment of the present invention;
FIG. 2 is an electrical schematic diagram of the band-type brake hydraulic control system of the present invention;
fig. 3 is a schematic structural diagram of a band-type brake hydraulic control system according to a second embodiment of the present invention.
In the figure: 10. an oil pump; 101. an oil tank; 20. an electromagnetic directional valve; 30. a band-type brake oil cylinder; 40. a first hydraulic control check valve; 41. a second hydraulic control check valve; 50. a pressure regulating valve; 51. a pressure gauge; 60. a main oil inlet path; 70. a first oil line; 71. an oil distribution pipeline; 72. a second oil line; 80. a main oil return line; 801. a cooler.
Detailed Description
In the following, the present invention is described with priority in conjunction with the accompanying drawings and the detailed description, and it should be noted that, in the premise of no conflict, the embodiments or technical features described below may be arbitrarily combined to form a new embodiment.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", "vertical", "top", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
The implementation mode is as follows:
the first embodiment is as follows:
as shown in fig. 1 and fig. 2, the utility model discloses a two board-like injection molding machine band-type brake hydraulic control system, including the oil pump 10, electromagnetic directional valve 20 and detecting element, the output of oil pump 10 and the P mouth of electromagnetic directional valve 20 are through main oil feed way 60 intercommunication, one of them in the no pole chamber of band-type brake hydro-cylinder 30 on each pull rod of two boards machine and the pole chamber all communicates with the A mouth of electromagnetic directional valve 20, all be provided with proportional speed control valve between the A mouth of each band-type brake hydro-cylinder 30 and electromagnetic directional valve 20, another in the no pole chamber of each band-type brake hydro-cylinder 30 and the pole chamber all communicates with the B mouth of electromagnetic directional valve 20, the T mouth of electromagnetic directional valve 20 connects back to oil tank 101 of oil pump 10. The detection unit is used for detecting whether position errors occur on the pistons of the band-type brake oil cylinders 30 or not and adjusting the valve ports of the proportional speed regulating valves according to the detection results of the detection unit, so that the band-type brake oil cylinders 30 are controlled to have the same speed, the band-type brakes are controlled to have the same action, the opening or closing actions of the band-type brakes are consistent, and the synchronization precision and the position precision of the band-type brake action of the two-plate injection molding machine are effectively improved.
In this embodiment, the rodless cavity of each band-type brake cylinder 30 on each pull rod of the two-board machine is communicated with the port a of the electromagnetic directional valve 20, the rod cavity of each band-type brake cylinder 30 is communicated with the port B of the electromagnetic directional valve 20, and the port T of the electromagnetic directional valve 20 is connected to the oil tank 101 of the oil pump 10. Therefore, the proportional speed control valve is disposed between the rodless chamber of each band-type brake cylinder 30 and the port a of the electromagnetic directional valve 20. As can be understood by those skilled in the art, when the band-type brake performs the opening operation: the oil pump 10 is started, the electromagnet a of the electromagnetic directional valve 20 is electrified, and the pressure oil is divided into four paths through the port A of the electromagnetic directional valve 20 and respectively passes through the proportional speed regulating valves V4.1, V4.2, V4.3 and V4.4 to drive the rodless cavities of the internal contracting brake oil cylinders 30 on the front upper pull rod, the front lower pull rod, the rear upper pull rod and the rear lower pull rod to carry out brake opening; when the position error occurs on the piston of the band-type brake oil cylinder 30 on the front upper, front lower, rear upper and rear lower pull rods, the detection unit sends a signal, the openings of the proportional speed regulating valves V4.1, V4.2, V4.3 and V4.4 are regulated, the speed is regulated to synchronize the actions of the proportional speed regulating valves, and the rod cavities of the band-type brake oil cylinder 30 on the front upper, front lower, rear upper and rear lower pull rods directly enter the T port of the electromagnetic directional valve 20 through the B port of the electromagnetic directional valve 20 and return to the oil tank 101 of the oil pump 10; when the band-type brake carries out closing action: the oil pump 10 is started, the electromagnet B of the electromagnetic directional valve 20 is electrified, pressure oil is divided into four paths through the port B of the electromagnetic directional valve 20 and respectively passes through the proportional speed regulating valves V4.1, V4.2, V4.3 and V4.4 to drive the rod cavities of the band-type brake oil cylinders 30 on the front upper, the front lower, the rear upper and the rear lower pull rods to perform closing action, the closing action of the band-type brake is ensured to be synchronous, and the rodless cavities of the band-type brake oil cylinders 30 on the front upper, the front lower, the rear upper and the rear lower pull rods directly enter the port B of the electromagnetic directional valve 20 through the port A of the electromagnetic directional valve 20 and finally enter the port T of the electromagnetic directional valve 20 and return to the oil tank 101 of the oil pump 10.
The oil passage in the oil pump 10 is a conventional art, and will not be described here.
As a preferred embodiment, the present invention may further include the following additional technical features:
the utility model discloses a two board-like injection molding machine band-type brake hydraulic control systems is still including air-vent valve 50, and air-vent valve 50 sets up between the output of oil pump 10 and the P mouth of electromagnetic directional valve 20, also is that air-vent valve 50 sets up on main oil inlet circuit 60 for the pressure of the pressure oil that the regulation got into in the electromagnetic directional valve 20. Of course, the return path of the pressure regulating valve 50 is returned to the tank 101 of the oil pump 10, and the pressure oil is recycled. Therefore, the combination of the pressure regulating valve 50 and the proportional speed regulating valve can ensure that the pressure oil speed and the pressure of the driving band-type brake oil cylinder 30 are consistent, and further improve the synchronous precision and the position precision of the band-type brake action of the two-plate type injection molding machine. Meanwhile, the actual driving force of the band-type brake oil cylinder 30 can be adjusted through the pressure regulating valve 50, the safety factor of the band-type brake assembly is improved, and the service life of the two-plate type machine is prolonged.
In this embodiment, a pressure detecting device is disposed between the pressure regulating valve 50 and the port P of the electromagnetic directional valve 20, and the pressure detecting device is a pressure gauge 51, that is, the pressure gauge 51 is disposed on the main oil inlet 60 and above the pressure regulating valve 50, and is used for detecting the pressure of the pressure oil entering the electromagnetic directional valve 20, so as to facilitate the regulation of the pressure regulating valve 50 and the control of the driving force for driving the band-type brake cylinder 30.
In this embodiment, the output end of the oil pump 10 is communicated with the port P of the electromagnetic directional valve 20 through a main oil inlet pipeline 60, and the pressure regulating valve 50 and the pressure gauge 51 are both arranged on the main oil inlet pipeline, so that the arrangement of the pressure regulating valve 50 and the pressure gauge 51 is facilitated.
As a preferred embodiment, the present invention may further include the following additional technical features:
the utility model discloses a two board-like injection molding machine band-type brake hydraulic control system is still including first liquid accuse check valve 40 and second liquid accuse check valve 41, through first liquid accuse check valve 40 intercommunication between each band-type brake hydro-cylinder 30's the rodless chamber and the A mouth of electromagnetic reversing valve 20, through second liquid accuse check valve 41 intercommunication between each band-type brake hydro-cylinder 30's the B mouth that has the pole chamber and electromagnetic reversing valve 20. Therefore, when the band-type brake is opened, the electromagnet a of the electromagnetic reversing valve 20 is electrified, the pressure oil passes through the pressure set by the pressure regulating valve 50, passes through the port A of the electromagnetic reversing valve 20 and the first hydraulic control one-way valve 40, and then is divided into four paths to pass through the proportional speed regulating valves V4.1, V4.2, V4.3 and V4.4 to drive the rodless cavities of the band-type brake oil cylinders 30 on the front upper pull rod, the front lower pull rod, the rear upper pull rod and the rear lower pull rod respectively to perform the opening action; a rod cavity of the band-type brake oil cylinder 30 directly returns to the oil tank 101 through the second hydraulic control one-way valve 41 and the electromagnetic directional valve 20; when the band-type brake is switched on, the electromagnet b of the electromagnetic reversing valve 20 is electrified, pressure oil passes through the pressure set by the pressure regulating valve 50, passes through the electromagnetic reversing valve 20 and the second hydraulic one-way valve 41, and then directly drives the rod cavity of the band-type brake oil cylinder 30 on the front upper, front lower, rear upper and rear lower pull rods to be switched off, so that the synchronous switching-off action of the band-type brake is ensured, the return oil of the rodless cavity of the band-type brake oil cylinder 30 is regulated by the detection unit through the openings of the proportional speed regulating valves V4.1, V4.2, V4.3 and V4.4, the speed of the return oil is controlled to synchronize the action, the effect of controlling the synchronous speed of the return oil is achieved, and finally the return oil of the rodless cavity of the band-type brake oil cylinder 30 returns to the oil tank 101.
In this embodiment, the hydraulic control system of the present invention further includes a first oil line 70, a second oil line 72 and a plurality of oil distribution lines 71, the number of the oil distribution lines 71 is the same as that of the band-type brake cylinders 30, a first end of the first oil line 70 is communicated with the first pilot-controlled check valve 40, a second end of the first oil line 70 is communicated with a first end of each oil distribution line 71, and a second end of each oil distribution line 71 is communicated with the rodless cavity of each band-type brake cylinder 30; a first end of the second oil pipeline 72 is communicated with the second hydraulic control one-way valve 41, and a second end of the second oil pipeline 72 is communicated with the rod cavity of each band-type brake cylinder 30. That is, it can be understood that the rodless cavity of each band-type brake cylinder 30 is connected with the first pilot-controlled one-way valve 40 through the first oil pipeline 70 and each oil distribution pipeline 71; through being connected of second pipeline between each band-type brake hydro-cylinder 30's the pole chamber and the second hydraulic control check valve 41, laying of oil pipe way can be saved, be convenient for simultaneously the utility model discloses laying of hydraulic control system oil circuit.
In this embodiment, the utility model discloses a hydraulic control system is still including the main oil return pipeline 80, and the first end intercommunication air-vent valve 50's of main oil return pipeline 80 oil return opening and the T mouth of solenoid directional valve 20, the second end of main oil return pipeline 80 connect the oil tank 101 of oil return pump 10. Therefore, after the band-type brake is opened, the oil return path of the rod cavity of the band-type brake cylinder 30 enters the port B of the electromagnetic directional valve 20 through the second pilot-controlled check valve 41, enters the main oil return line 80 through the port T of the electromagnetic directional valve 20 and returns to the oil tank 101 of the oil pump 10, and the oil return path of the pressure regulating valve 50 also returns to the oil tank 101 of the oil pump 10 through the main oil return line 80; after the band-type brake realizes a closing action, an oil return path of a rodless cavity of the band-type brake oil cylinder 30 adjusts openings of the proportional speed regulating valves V4.1, V4.2, V4.3 and V4.4 through the detection unit, controls the speed synchronization of oil return, enters the port A of the electromagnetic directional valve 20 through the first hydraulic control one-way valve 40, and enters the main oil return line 80 to return to the oil tank 101 of the oil pump 10 through the port B of the electromagnetic directional valve 20 and the port T of the electromagnetic directional valve 20 in sequence. Therefore, through setting up this main oil return pipeline 80 can be so that the utility model discloses laying of hydraulic control system oil return way saves the oil pipe way.
In this embodiment, the cooler 801 is disposed on the main oil return pipeline 80, and the cooler 801 is used to cool the oil that flows back into the oil tank 101, so as to avoid potential safety hazards caused by an excessively high temperature of the pressure oil that flows back into the oil tank 101 of the oil pump 10.
Example two:
as shown in fig. 2-3, the present embodiment is different from the first embodiment in that: the connection position of the port A of the electromagnetic directional valve 20 and the band-type brake oil cylinder 30 on each pull rod is different.
In this embodiment, the rod cavity of the band-type brake cylinder 30 on each pull rod of the two-board machine is communicated with the port a of the electromagnetic directional valve 20, the rodless cavity of each band-type brake cylinder 30 is communicated with the port B of the electromagnetic directional valve 20, and the port T of the electromagnetic directional valve 20 is connected to the oil tank 101 of the oil pump 10. Therefore, each proportional speed regulating valve is arranged between the rod cavity of each band-type brake oil cylinder 30 and the port A of the electromagnetic directional valve 20. As can be understood by those skilled in the art, when the band-type brake performs the opening operation: the oil pump 10 is started, the electromagnet a of the electromagnetic directional valve 20 is electrified, and the pressure oil is divided into four paths through the port A of the electromagnetic directional valve 20 and respectively passes through the proportional speed regulating valves V4.1, V4.2, V4.3 and V4.4 to drive the rod cavities of the internal contracting brake oil cylinders 30 on the front upper pull rod, the front lower pull rod, the rear upper pull rod and the rear lower pull rod to carry out brake opening; when the position error of the piston of the band-type brake oil cylinder 30 on the front upper, front lower, rear upper and rear lower pull rods occurs, the detection unit sends a signal, the openings of the proportional speed regulating valves V4.1, V4.2, V4.3 and V4.4 are regulated, the speed is regulated to synchronize the actions of the proportional speed regulating valves, and the rodless cavities of the band-type brake oil cylinder 30 on the front upper, front lower, rear upper and rear lower pull rods directly enter the T port of the electromagnetic directional valve 20 through the B port of the electromagnetic directional valve 20 and return to the oil tank 101 of the oil pump 10; when the band-type brake carries out closing action: the oil pump 10 is started, the electromagnet B of the electromagnetic directional valve 20 is electrified, pressure oil passes through four paths separated by the port B of the electromagnetic directional valve 20 and respectively passes through the proportional speed regulating valves V4.1, V4.2, V4.3 and V4.4 to drive the rodless cavities of the band-type brake oil cylinders 30 on the front upper pull rod, the front lower pull rod, the rear upper pull rod and the rear lower pull rod to perform a switching-on action, the switching-on action of the band-type brake is ensured to be synchronous, return oil of rod cavities of the band-type brake oil cylinders 30 on the front upper pull rod, the front lower pull rod, the rear upper pull rod and the rear lower pull rod directly enters the port B of the electromagnetic directional valve 20 through the port A of the electromagnetic directional valve 20 and finally enters the port T of the electromagnetic directional valve 20 and returns to the oil tank 101 of the oil pump 10.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.
Claims (10)
1. Two board-like injection molding machine band-type brake hydraulic control system, including oil pump (10) and solenoid directional valve (20), the output of oil pump (10) with the P mouth intercommunication of solenoid directional valve (20), one of the no pole chamber and the pole chamber that have of band-type brake hydro-cylinder (30) on each pull rod of two boards machine all with the A mouth intercommunication of solenoid directional valve (20), its characterized in that: the electromagnetic directional control brake is characterized by further comprising a detection unit and a plurality of proportional speed control valves, the proportional speed control valves are arranged between each band-type brake oil cylinder (30) and the port A of the electromagnetic directional valve (20), the detection unit is used for detecting whether position errors occur to the piston of each band-type brake oil cylinder (30) and adjusting the valve port of each proportional speed control valve according to the detection result of the detection unit, so that the band-type brake oil cylinders (30) are controlled to be identical in speed and to control the band-type brake to act consistently, the other of the rodless cavity and the rod cavity of each band-type brake oil cylinder (30) is communicated with the port B of the electromagnetic directional valve (20), and the port T of the electromagnetic directional valve (20) is connected with the oil tank (101) of the oil pump (10).
2. The band-type brake hydraulic control system of a two-plate injection molding machine according to claim 1, characterized in that: the oil pump further comprises a pressure regulating valve (50), wherein the pressure regulating valve (50) is arranged between the output end of the oil pump (10) and the port P of the electromagnetic directional valve (20) and used for regulating the pressure of pressure oil entering the electromagnetic directional valve (20).
3. The band-type brake hydraulic control system of a two-plate injection molding machine according to claim 2, characterized in that: and an oil return path of the pressure regulating valve (50) is connected back to an oil tank (101) of the oil pump (10).
4. The band-type brake hydraulic control system of a two-plate injection molding machine according to claim 2 or 3, characterized in that: and a pressure detection device is arranged between the pressure regulating valve (50) and the port P of the electromagnetic reversing valve (20), and is used for detecting the pressure of the pressure oil entering the electromagnetic reversing valve (20).
5. The band-type brake hydraulic control system of the two-plate injection molding machine according to claim 4, characterized in that: the oil pump pressure regulating device is characterized by further comprising a main oil inlet pipeline used for communicating the output end of the oil pump (10) with the P port of the electromagnetic directional valve (20), and the pressure regulating valve (50) and the pressure detecting device are arranged on the main oil inlet pipeline.
6. The band-type brake hydraulic control system of a two-plate injection molding machine according to claim 2, characterized in that: the electromagnetic reversing valve further comprises a main oil return pipeline (80), a first end of the main oil return pipeline (80) is communicated with an oil return port of the pressure regulating valve (50) and a T port of the electromagnetic reversing valve (20), and a second end of the main oil return pipeline (80) is connected back to an oil tank (101) of the oil pump (10).
7. The band-type brake hydraulic control system of a two-plate injection molding machine according to claim 6, characterized in that: the main oil return pipeline (80) is provided with a cooler (801), and the cooler (801) is used for cooling oil which flows back into the oil tank (101).
8. The band-type brake hydraulic control system of a two-plate injection molding machine according to claim 1 or 2, characterized in that: the electromagnetic directional control brake is characterized by further comprising a first hydraulic control one-way valve (40) and a second hydraulic control one-way valve (41), a rodless cavity of each band-type brake oil cylinder (30) is communicated with the port A of the electromagnetic directional valve (20) through the first hydraulic control one-way valve (40), and a rod cavity of each band-type brake oil cylinder (30) is communicated with the port B of the electromagnetic directional valve (20) through the second hydraulic control one-way valve (41).
9. The band-type brake hydraulic control system of a two-plate injection molding machine according to claim 8, characterized in that: still including first oil pipe way (70) and a plurality of oil distribution pipeline (71), the quantity of oil distribution pipeline (71) with the quantity of band-type brake hydro-cylinder (30) is the same, the first end of first oil pipe way (70) with first liquid accuse check valve (40) intercommunication, the second end of first oil pipe way (70) and the first end intercommunication of each oil distribution pipeline (71), the second end of each oil distribution pipeline (71) and the rodless chamber intercommunication of each band-type brake hydro-cylinder (30).
10. The band-type brake hydraulic control system of a two-plate injection molding machine according to claim 9, characterized in that: the brake system is characterized by further comprising a second oil pipeline (72), wherein the first end of the second oil pipeline (72) is communicated with the second hydraulic control one-way valve (41), and the second end of the second oil pipeline (72) is communicated with the rod cavity of each band-type brake oil cylinder (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220851535.XU CN218542761U (en) | 2022-04-13 | 2022-04-13 | Band-type brake hydraulic control system of two-plate type injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220851535.XU CN218542761U (en) | 2022-04-13 | 2022-04-13 | Band-type brake hydraulic control system of two-plate type injection molding machine |
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| Publication Number | Publication Date |
|---|---|
| CN218542761U true CN218542761U (en) | 2023-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220851535.XU Active CN218542761U (en) | 2022-04-13 | 2022-04-13 | Band-type brake hydraulic control system of two-plate type injection molding machine |
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| CN (1) | CN218542761U (en) |
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2022
- 2022-04-13 CN CN202220851535.XU patent/CN218542761U/en active Active
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