CN214248395U - Special reversing valve for die adjusting action - Google Patents
Special reversing valve for die adjusting action Download PDFInfo
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- CN214248395U CN214248395U CN202120042748.3U CN202120042748U CN214248395U CN 214248395 U CN214248395 U CN 214248395U CN 202120042748 U CN202120042748 U CN 202120042748U CN 214248395 U CN214248395 U CN 214248395U
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Abstract
The utility model provides a reversing valve special for mold adjusting action, belonging to the field of reversing valve manufacturing; the utility model discloses a: a valve core; the valve core is provided with two shoulder sealing surfaces for radially sealing the working oil port; a plurality of pressure equalizing grooves are formed in the edge of each shoulder sealing surface; each pressure equalizing groove is of an annular structure and is arranged on the radial surface of the valve core. The utility model discloses a transfer mould action special reversing valve is through the length that increases the sealed face of case shoulder to set up a plurality of pressure-equalizing grooves on the sealed face of shoulder, not only effectual area of contact between case and the casing that has reduced can also further reduce sealed clearance, so can effectual assurance reversing valve still can be high-efficient quick when being in neutral position open.
Description
Technical Field
The utility model relates to a valve manufacturing technology especially relates to a transfer mould action special reversing valve, belongs to hydraulic equipment and makes technical field.
Background
The reversing valve is used as a hydraulic element for controlling the on-off and reversing of an oil path, and is very commonly applied. The common reversing valve is of a slide valve type structure, a valve core of the reversing valve slides in a valve body, and the reversing is realized by switching the valve core, so that different oil ports are communicated or closed.
The mold adjusting action of the injection molding machine adopts the electromagnetic directional valve to control the rotation of an oil motor to drive a mold adjusting mechanism to realize the mold adjusting action, generally, the mold adjusting action is required to be executed when the mold of the injection molding machine needs to be replaced, the electromagnetic directional valve is in a neutral position when the mold is not replaced, and the oil motor does not work; because the replacement of the mold of the injection molding machine is not frequently carried out, the electromagnetic directional valve can be in a neutral position for a long time, and because the electromagnetic directional valve is of a slide valve type structure, pressure oil at an oil inlet of the electromagnetic directional valve can seep into a working oil port through a gap, so that the misoperation of an oil motor is caused, the position of the mold is changed, and the product quality is influenced; when the electromagnetic directional valve is in a neutral position for a long time, the valve core of the electromagnetic directional valve is adhered to the shell due to hydraulic clamping force and dirt in oil, so that the valve core cannot be normally switched when the directional valve needs to be opened.
Therefore, there is a need in the art for a directional control valve that can prevent the valve core from being left in the neutral position for a long time and ensure normal switching only when the directional control function is occasionally activated.
SUMMERY OF THE UTILITY MODEL
The utility model provides a novel transfer mould action special reversing valve, the width through the sealed shoulder that increases the case sets up the voltage-sharing oil groove on the shoulder to solve among the prior art reversing valve because the case that easily fills impurity and adhesion lead to excessively strongly is difficult to the technical problem who opens between case and the casing under the meso position state.
The utility model discloses transfer mould action special reversing valve includes: a valve core; the valve core is provided with two shoulder sealing surfaces for radially sealing the working oil port;
a plurality of pressure equalizing grooves are formed in the edge of each shoulder sealing surface; each pressure equalizing groove is of an annular structure and is arranged on the radial surface of the valve core.
The mold-adjusting action-dedicated reversing valve as described above, wherein the reversing valve further comprises: a housing; a high-pressure oil port and two different working oil ports are arranged in the shell;
the shell is provided with two sliding holes, and the valve core is sleeved in the two sliding holes; the valve core slides leftwards or rightwards, and the sliding hole on one side is opened, so that the high-pressure oil port is communicated with one of the working oil ports;
each shoulder sealing surface is respectively contacted with two sliding holes; three pressure equalizing grooves are formed in the edges of two sides of each shoulder sealing surface;
when the valve core is in the middle state, the pressure equalizing grooves are formed in the radial surface of the valve core and correspond to the two sliding holes.
The reversing valve special for mold adjusting action is characterized in that the shell is further provided with an oil return port, two ends of the shell are respectively provided with an oil return cavity, and the two oil return cavities are respectively connected with the oil return port.
The reversing valve special for die adjustment is characterized in that the two shoulder sealing surfaces respectively correspond to the working oil ports.
The reversing valve special for the mold adjusting action, wherein a hydraulic source is arranged at the front end of the high-pressure oil port; the front ends of the working oil ports are respectively connected with the two ends of the oil motor.
The reversing valve special for mold adjusting action is characterized in that two sides of the shell are respectively provided with an electromagnet, and two ends of the two electromagnets are respectively contacted with two ends of the valve core.
The reversing valve special for the mold adjusting action is characterized in that the electromagnets are provided with driving rods, and the electromagnets are connected with the end parts of the valve cores through the driving rods;
and a pre-tightening spring is also arranged between the driving rod and the valve core.
The utility model discloses a transfer mould action special reversing valve is through the length that increases the sealed face of case shoulder to set up a plurality of pressure-equalizing grooves on the sealed face of shoulder, not only effectual area of contact between case and the casing that has reduced can also further reduce sealed clearance, so can effectual assurance reversing valve still can be high-efficient quick when being in neutral position open.
Drawings
Fig. 1 is a schematic sectional structure view of a reversing valve dedicated for mold adjustment according to an embodiment of the present invention.
Detailed Description
Transfer mould action special reversing valve can adopt following material to make, and be not limited to following material, for example: common components such as a valve core, a hydraulic matching system, an electric control device and the like.
Fig. 1 is a schematic sectional structure view of a reversing valve dedicated for mold adjustment according to an embodiment of the present invention.
The utility model discloses transfer mould action special reversing valve, include: a valve core 2; the valve core 2 is provided with two shoulder sealing surfaces for radially sealing the working oil port;
a plurality of pressure equalizing grooves 3 are formed in the edge of each shoulder sealing surface; each pressure equalizing groove 3 is of an annular structure and is arranged on the radial surface of the valve core 2.
The special reversing valve for the mold adjusting action in the embodiment further comprises: a housing 1; a high-pressure oil port P and two different working oil ports (A and B) are arranged in the shell 1.
Normally, the two shoulder sealing surfaces correspond to the working ports, respectively.
The shell 1 is provided with two slide holes, and the valve core 2 is sleeved in the two slide holes; the valve core 2 slides leftwards or rightwards, and the sliding hole on one side is opened, so that the high-pressure oil port P is communicated with one working oil port A or B; and P is communicated with A when the hydraulic cylinder slides leftwards, and P is communicated with B when the hydraulic cylinder slides rightwards, so that the high-pressure oil is guided to the working oil port, and the reversing action is executed.
In general, the high pressure port P is connected to a hydraulic source 7 in the hydraulic system, and is used for releasing high pressure hydraulic oil through the high pressure oil pipe P.
The two working oil ports A and B are respectively connected with two ends of an actuating element (an oil motor 6) so as to execute reversing action through an oil inlet pipe and an oil outlet pipe.
Each shoulder sealing surface 11 is respectively contacted with two sliding holes 10; three pressure equalizing grooves 3 are formed in the edges of two sides of each shoulder sealing surface; the depth of the pressure equalizing grooves 3 is generally 0.3-0.4mm, the width is 0.4-0.5mm, and the space between the pressure equalizing grooves is 0.8-1.2 mm.
When the valve core 2 is in the middle state, the pressure equalizing grooves 3 are all corresponding to the two slide holes on the radial surface of the valve core.
Most of the pressure equalizing grooves 3 correspond to the sealing surface of the slide hole 10, so the valve core is subjected to the suspension supporting action of oil pressure, the friction force of the movement of the valve core is reduced, and the hydraulic clamping force of the valve core is reduced, so that the reversing valve can be normally reversed when being positioned at a neutral position for a long time and needing to be reversed.
The reversing valve special for the mold adjusting action in the embodiment is characterized in that an oil return port is further formed in the shell, oil return cavities are formed in two ends of the shell respectively, and the two oil return cavities are connected with the oil return port respectively.
The return port T is typically connected to a hydraulic tank to facilitate the non-working side of the actuator to drain low pressure oil to the tank. In the working process of the reversing valve, one working oil port is opened, the other working oil port automatically returns oil, and low-pressure oil is discharged into the oil tank.
In the reversing valve special for mold adjustment in this embodiment, generally, electromagnets are respectively disposed on two sides of the housing 1, and two ends of the two electromagnets are respectively in contact with two ends of the valve core 2.
Specifically, the electromagnets are provided with driving rods 9, and the electromagnets are connected with the end parts of the valve cores 2 through the driving rods 9;
and a pre-tightening spring 8 is also arranged between the driving rod 9 and the valve core 2. The biasing spring 8 can keep the valve element in a neutral position without receiving an external force.
The utility model discloses a transfer mould action special reversing valve is through the length that increases the sealed face of case shoulder to set up a plurality of pressure-equalizing grooves on the sealed face of shoulder, not only effectual area of contact between case and the casing that has reduced can also further reduce sealed clearance, so can effectual assurance reversing valve still can be high-efficient quick when being in neutral position open.
In this embodiment, since the length X of the shoulder sealing surface is longer than that of the common valve element, the opening degree from the oil inlet P to the working oil inlet a/B after the valve element is reversed is reduced under the appropriate working pressure drop of the oil motor, so that the motor can work normally, and the saved opening degree is used for increasing the overlapping amount of the electromagnetic directional valve, that is, because the overlapping amount M of the valve element is lengthened, there is a space for increasing the pressure equalizing groove in the overlapping area.
As shown in fig. 1, a pressure equalizing groove 3 is designed in each of the overlapping areas of the four steps of the valve core and the body, and the pressure equalizing grooves can effectively reduce the hydraulic clamping force of the valve core, so that the electromagnetic directional valve can be normally switched after being kept at a neutral position for a long time; the utility model discloses an in the effectual dirty clearance that enters into case and body of avoiding in the fluid, the fit clearance of case and valve body can reduce to the 70% in normal clearance, can avoid the dirty condition that enters into the clearance of the big granule of part like this, and to a great extent has improved and has aroused the electromagnetic directional valve because of dirty and actuate the bad condition.
Additionally, the utility model discloses a transfer mould action special reversing valve cost of manufacture is not high, and structural design is compact, and the structure is ingenious, starts the stopping stability, and it is convenient to use the maintenance, is applicable to the implementation of the hydraulic system's that various need not often open and the switching-over action of switching-over action.
The above embodiment numbers of the present invention are only for description, and do not represent the advantages and disadvantages of the embodiments. Through the above description of the embodiments, those skilled in the art will clearly understand that the above embodiment method can be implemented by some modifications plus the necessary general technical overlap; of course, the method can also be realized by simplifying some important technical features in the upper level. Based on such understanding, the technical solution of the present invention essentially or the part contributing to the prior art is: the whole function and structure, and cooperate the utility model discloses each embodiment the structure.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (7)
1. A special reversing valve for mold adjusting action is characterized by comprising: a valve core; the valve core is provided with two shoulder sealing surfaces for radially sealing the working oil port;
a plurality of pressure equalizing grooves are formed in the edge of each shoulder sealing surface; each pressure equalizing groove is of an annular structure and is arranged on the radial surface of the valve core.
2. The mold conditioning action specific diverter valve according to claim 1, further comprising: a housing; a high-pressure oil port and two different working oil ports are arranged in the shell;
the shell is provided with two sliding holes, and the valve core is sleeved in the two sliding holes; the valve core slides leftwards or rightwards, and the sliding hole on one side is opened, so that the high-pressure oil port is communicated with one of the working oil ports;
each shoulder sealing surface is respectively contacted with two sliding holes; three pressure equalizing grooves are formed in the edges of two sides of each shoulder sealing surface;
when the valve core is in the middle state, the pressure equalizing grooves are formed in the radial surface of the valve core and correspond to the two sliding holes.
3. The reversing valve special for mold adjustment according to claim 2, wherein an oil return port is further provided on the housing, oil return cavities are respectively provided at two ends of the housing, and the two oil return cavities are respectively connected to the oil return port.
4. The reversing valve special for mold adjustment according to claim 2, wherein the two shoulder sealing surfaces correspond to the working oil ports, respectively.
5. The reversing valve special for the die adjusting action according to claim 2, wherein a hydraulic source is arranged at the front end of the high-pressure oil port; the front ends of the working oil ports are respectively connected with the two ends of the oil motor.
6. The reversing valve special for mold adjustment according to any one of claims 2 to 4, wherein electromagnets are respectively disposed on two sides of the housing, and two ends of the two electromagnets are respectively in contact with two ends of the valve core.
7. The reversing valve special for mold adjusting action according to claim 6, wherein the electromagnets are provided with driving rods, and the electromagnets are connected with the end parts of the valve cores through the driving rods;
and a pre-tightening spring is also arranged between the driving rod and the valve core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120042748.3U CN214248395U (en) | 2021-01-08 | 2021-01-08 | Special reversing valve for die adjusting action |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120042748.3U CN214248395U (en) | 2021-01-08 | 2021-01-08 | Special reversing valve for die adjusting action |
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| Publication Number | Publication Date |
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| CN214248395U true CN214248395U (en) | 2021-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120042748.3U Active CN214248395U (en) | 2021-01-08 | 2021-01-08 | Special reversing valve for die adjusting action |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112747140A (en) * | 2021-01-08 | 2021-05-04 | 涌镇液压机械（上海）有限公司 | Special reversing valve for die adjusting action |
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2021
- 2021-01-08 CN CN202120042748.3U patent/CN214248395U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112747140A (en) * | 2021-01-08 | 2021-05-04 | 涌镇液压机械（上海）有限公司 | Special reversing valve for die adjusting action |
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