CN215257038U - Hydraulic station for realizing plugging and unplugging of positioning pin on die changing trolley - Google Patents
Hydraulic station for realizing plugging and unplugging of positioning pin on die changing trolley Download PDFInfo
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- CN215257038U CN215257038U CN202121040799.9U CN202121040799U CN215257038U CN 215257038 U CN215257038 U CN 215257038U CN 202121040799 U CN202121040799 U CN 202121040799U CN 215257038 U CN215257038 U CN 215257038U
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Abstract
The utility model discloses a hydraulic pressure station for realizing locating pin plug on retooling platform truck, it includes the oil tank, servo motor, the oil pump, the electromagnetic directional valve, the check valve, the branch road overflow valve, the positioning cylinder, servo motor control oil pump, the oil inlet and the oil tank of oil pump communicate, the oil-out of oil pump communicates with the oil inlet of electromagnetic directional valve, the oil return opening and the oil tank of electromagnetic directional valve communicate, the first working hydraulic fluid port of electromagnetic directional valve communicates with the pole chamber of positioning cylinder, the second working hydraulic fluid port of electromagnetic directional valve communicates with the oil inlet of check valve, the oil-out of check valve communicates with the no pole chamber of positioning cylinder, the no pole chamber of positioning cylinder communicates with the oil inlet of branch road overflow valve, the oil-out of branch road overflow valve communicates with the oil tank, the piston rod of positioning cylinder is connected with the locating pin; the mold changing trolley has the advantages that when the center positions of the positioning pin on the mold changing trolley and the positioning pin hole on the mold deviate, the positioning pin can be easily inserted into the positioning pin hole, and the positioning pin in any shape can be easily pulled out.
Description
Technical Field
The utility model relates to a fixed technique of retooling platform truck and mould especially relates to a hydraulic pressure station for realizing the locating pin plug on the retooling platform truck.
Background
When automatic plugging and unplugging systems such as heating systems and the like are arranged on a mold changing trolley of the injection molding machine, the mold needs to be accurately positioned on the mold changing trolley, and a positioning pin (a center pin) is arranged on the mold changing trolley and matched with a positioning pin hole on the mold to realize the accurate positioning of the mold and the mold changing trolley.
When the die moves to the appointed place of the die changing trolley, the positioning pin on the die changing trolley can be inserted into the positioning pin hole on the die, so that the die is fixed. At present, the positioning pin is inserted into the positioning pin hole by utilizing pneumatic driving, and an air source drives a cylinder rod of an air cylinder to move in a telescopic mode through switching of a reversing valve so as to enable the positioning pin to be inserted and pulled out. However, this pneumatic driving method has the following problems: 1) when the mold moves in place, small position deviation can be generated due to the inertia effect, so that the center positions of the positioning pin and the positioning pin hole deviate, the force provided by the pneumatic driving mode is limited, and the force of the plug positioning pin is insufficient, so that the positioning pin cannot be inserted into the positioning pin hole sometimes; 2) the pneumatic driving mode provides limited force, and the deep-cavity positioning pin can not be pulled out frequently; 3) the application of the pneumatic driving mode can insert the positioning pin into the positioning pin hole only after the die is moved to the proper position and stopped.
Disclosure of Invention
The utility model aims to solve the technical problem that a hydraulic pressure station for realizing the locating pin plug on the retooling platform truck is provided, it still can make the locating pin easily insert the locating pin hole when the central point of locating pin hole on locating pin on the retooling platform truck and the mould puts and produces the skew, and can easily extract the locating pin of any shape.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a hydraulic pressure station for realizing locating pin plug on retooling platform truck which characterized in that: comprises an oil tank, a servo motor, an oil pump, an electromagnetic directional valve, a one-way valve, a branch overflow valve and a positioning oil cylinder, the servo motor is electrically connected with the oil pump, an oil inlet of the oil pump is communicated with the oil tank, the oil outlet of the oil pump is communicated with the oil inlet of the electromagnetic directional valve, the oil return port of the electromagnetic directional valve is communicated with the oil tank, a first working oil port of the electromagnetic directional valve is communicated with the rod cavity of the positioning oil cylinder, a second working oil port of the electromagnetic directional valve is communicated with an oil inlet of the one-way valve, the oil outlet of the one-way valve is communicated with the rodless cavity of the positioning oil cylinder, the rodless cavity of the positioning oil cylinder is also communicated with the oil inlet of the branch overflow valve, the oil outlet of the branch overflow valve is communicated with the oil tank, and a piston rod of the positioning oil cylinder is connected with a positioning pin on the die changing trolley.
The hydraulic station further comprises a system pressure relief valve, wherein an oil inlet of the system pressure relief valve is communicated with an oil outlet of the oil pump, and an oil outlet of the system pressure relief valve is communicated with the oil tank. And a system pressure relief valve is additionally arranged and used for releasing pressure after a positioning pin on the die change trolley is inserted into a positioning pin hole on the die to be inserted in place, so that the pressure relief effect is realized.
The hydraulic station further comprises a system overflow valve, wherein an oil inlet of the system overflow valve is communicated with an oil outlet of the oil pump, and an oil outlet of the system overflow valve is communicated with the oil tank. And a system overflow valve is additionally arranged and used for protecting the whole hydraulic loop.
The electromagnetic directional valve, the one-way valve, the branch overflow valve and the positioning oil cylinder form a control branch for realizing the plugging and unplugging of one positioning pin, and the hydraulic station is provided with a plurality of control branches for realizing the plugging and unplugging of a plurality of positioning pins. If the hydraulic station is provided with two control branches, two positioning pins can be controlled, so that the control of the two positioning pins on the unilateral double-station die changing trolley can be met.
The hydraulic station further comprises an oil suction filter, wherein the oil suction filter is additionally arranged on an oil line pipeline which is used for communicating an oil inlet of the oil pump with the oil tank, and the oil suction filter is immersed in hydraulic oil contained in the oil tank.
The hydraulic station further comprises a liquid level meter, and the liquid level meter is mounted on the inner wall of the oil tank.
When the first electromagnet of the electromagnetic directional valve is electrified and the second electromagnet is not electrified, hydraulic oil output by an oil outlet of the oil pump enters the rodless cavity of the positioning oil cylinder through the electromagnetic directional valve and the one-way valve, hydraulic oil in the rod cavity of the positioning oil cylinder returns oil through the electromagnetic directional valve, and a positioning pin connected with a piston rod of the positioning oil cylinder is inserted for operation; when the second electromagnet of the electromagnetic directional valve is electrified and the first electromagnet is not electrified, hydraulic oil output by the oil outlet of the oil pump enters the rod cavity of the positioning oil cylinder through the electromagnetic directional valve, hydraulic oil in the rod-free cavity of the positioning oil cylinder returns through the branch overflow valve, and the positioning pin connected with the piston rod of the positioning oil cylinder is pulled out.
Compared with the prior art, the utility model has the advantages of:
1) the hydraulic station utilizes the piston rod of the positioning oil cylinder to push the positioning pin on the die changing trolley to insert the positioning pin into the positioning pin hole on the die, the force provided by the hydraulic driving mode is enough, and even if the central position of the positioning pin and the central position of the positioning pin hole deviate, the positioning pin can be inserted into the positioning pin hole to be accurately positioned.
2) The hydraulic driving mode of the hydraulic station provides large force, and the positioning pin in any shape can be easily pulled out.
3) The hydraulic driving mode of the hydraulic station can also perform the operation of inserting the inverted triangular positioning pin into the positioning pin hole when the mold is to be moved in place (at the braking stage), so that the whole period can be shortened.
4) The check valve plays a pressure maintaining role, the branch overflow valve plays a safety valve role, and the positioning oil cylinder is prevented from being exploded due to the fact that a positioning pin on the die changing trolley is not moved back in place when the die is hoisted.
Drawings
FIG. 1 is a schematic diagram of a hydraulic circuit of a hydraulic station capable of controlling a locating pin according to the first embodiment;
fig. 2 is a schematic diagram of a hydraulic circuit of the hydraulic station capable of controlling two positioning pins according to the second embodiment.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
The first embodiment is as follows:
the hydraulic station for inserting and pulling out the positioning pin on the mold changing trolley provided by this embodiment includes, as shown in fig. 1, an oil tank 1, a servo motor 2, an oil pump 3, an electromagnetic directional valve V1, a check valve V2, a branch overflow valve V3, and a positioning oil cylinder 4, the servo motor 2 is electrically connected to the oil pump 3, an oil inlet of the oil pump 3 is communicated with the oil tank 1, an oil outlet of the oil pump 3 is communicated with an oil inlet of an electromagnetic directional valve V1 (i.e., a P port of the electromagnetic directional valve V1), an oil return port of an electromagnetic directional valve V1 (i.e., a T port of the electromagnetic directional valve V1) is communicated with the oil tank 1, a first working oil port of the electromagnetic directional valve V1 (i.e., an a port of the electromagnetic directional valve V1) is communicated with a rod chamber 41 of the positioning oil cylinder 4, a second working oil port of the electromagnetic directional valve V1 (i.e., a B port of the electromagnetic directional valve V1) is communicated with an oil inlet of the check valve V2, an oil outlet of the check valve V2 is communicated with a rodless chamber 42 of the positioning oil cylinder 4, the rodless cavity 42 of the positioning oil cylinder 4 is also communicated with an oil inlet of a branch overflow valve V3 (namely a port B of the branch overflow valve V3), an oil outlet of a branch overflow valve V3 (namely a port T of the branch overflow valve V3) is communicated with the oil tank 1, a piston rod 43 of the positioning oil cylinder 4 is connected with a positioning pin (not shown in the figure) on the die change trolley, and the electromagnetic directional valve V1, the check valve V2, the branch overflow valve V3 and the positioning oil cylinder 4 form a control branch 5 for realizing the plugging and unplugging of one positioning pin.
In the present embodiment, the hydraulic station further includes a system pressure relief valve V4, an oil inlet of the system pressure relief valve V4 (i.e., the P port of the system pressure relief valve V4) is communicated with an oil outlet of the oil pump 3, and an oil outlet of the system pressure relief valve V4 (i.e., the T port of the system pressure relief valve V4) is communicated with the oil tank 1. And a system pressure relief valve V4 is additionally arranged and used for releasing pressure after a positioning pin on the die change trolley is inserted into a positioning pin hole on the die to be inserted in place, so that the pressure relief effect is realized.
In this embodiment, the hydraulic station further includes a system relief valve V5, an oil inlet of the system relief valve V5 (i.e., the P port of the system relief valve V5) is communicated with an oil outlet of the oil pump 3, and an oil outlet of the system relief valve V5 (i.e., the T port of the system relief valve V5) is communicated with the oil tank 1. A system overflow valve V5 is additionally arranged and used for protecting the whole hydraulic circuit.
In this embodiment, the hydraulic station further includes an oil suction filter 6, the oil suction filter 6 is additionally installed on an oil line pipeline communicating an oil inlet of the oil pump 3 with the oil tank 1, and the oil suction filter 6 is immersed in hydraulic oil contained in the oil tank 1.
In this embodiment, the hydraulic station further comprises a level gauge 7, the level gauge 7 being mounted on an inner wall of the oil tank 1.
The working principle of the hydraulic station is as follows: when the first electromagnet D1 of the electromagnetic directional valve V1 is electrified and the second electromagnet D2 is not electrified, hydraulic oil output by an oil outlet of the oil pump 3 enters the rodless cavity 42 of the positioning oil cylinder 4 through the electromagnetic directional valve V1 and the one-way valve V2, hydraulic oil in the rod cavity 41 of the positioning oil cylinder 4 returns oil through the electromagnetic directional valve V1, and a positioning pin connected with a piston rod 43 of the positioning oil cylinder 4 is inserted; when the second electromagnet D2 of the electromagnetic directional valve V1 is electrified and the first electromagnet D1 is not electrified, hydraulic oil output by the oil outlet of the oil pump 3 enters the rod cavity 41 of the positioning oil cylinder 4 through the electromagnetic directional valve V1, hydraulic oil in the rodless cavity 42 of the positioning oil cylinder 4 returns through the branch overflow valve V3, and a positioning pin connected with the piston rod 43 of the positioning oil cylinder 4 is pulled out.
Example two:
in the hydraulic station for inserting and pulling the positioning pin on the mold changing trolley provided by the embodiment, as shown in fig. 2, a control branch 5 is added on the basis of the hydraulic station of the first embodiment for inserting and pulling two positioning pins, so that the control of two positioning pins on the single-side double-station mold changing trolley can be met.
According to actual needs, a plurality of control branches 5 can be added on the basis of the hydraulic station in the first embodiment, so that control of a plurality of positioning pins can be realized.
The servo motor 2, the oil pump 3, the oil absorption filter 6 and the liquid level meter 7 adopt the prior art; the electromagnetic directional valve V1 and the one-way valve V2 both adopt the prior art; the positioning oil cylinder 4 adopts the existing oil cylinder; the branch overflow valve V3 and the system overflow valve V5 both adopt the existing overflow valves; the system pressure relief valve V4 is an existing pressure relief valve.
Claims (7)
1. The utility model provides a hydraulic pressure station for realizing locating pin plug on retooling platform truck which characterized in that: comprises an oil tank, a servo motor, an oil pump, an electromagnetic directional valve, a one-way valve, a branch overflow valve and a positioning oil cylinder, the servo motor is electrically connected with the oil pump, an oil inlet of the oil pump is communicated with the oil tank, the oil outlet of the oil pump is communicated with the oil inlet of the electromagnetic directional valve, the oil return port of the electromagnetic directional valve is communicated with the oil tank, a first working oil port of the electromagnetic directional valve is communicated with the rod cavity of the positioning oil cylinder, a second working oil port of the electromagnetic directional valve is communicated with an oil inlet of the one-way valve, the oil outlet of the one-way valve is communicated with the rodless cavity of the positioning oil cylinder, the rodless cavity of the positioning oil cylinder is also communicated with the oil inlet of the branch overflow valve, the oil outlet of the branch overflow valve is communicated with the oil tank, and a piston rod of the positioning oil cylinder is connected with a positioning pin on the die changing trolley.
2. The hydraulic station for realizing the plugging and unplugging of the positioning pin on the die change trolley according to claim 1, is characterized in that: the hydraulic station further comprises a system pressure relief valve, wherein an oil inlet of the system pressure relief valve is communicated with an oil outlet of the oil pump, and an oil outlet of the system pressure relief valve is communicated with the oil tank.
3. The hydraulic station for realizing the plugging and unplugging of the positioning pin on the die change trolley according to claim 2, is characterized in that: the hydraulic station further comprises a system overflow valve, wherein an oil inlet of the system overflow valve is communicated with an oil outlet of the oil pump, and an oil outlet of the system overflow valve is communicated with the oil tank.
4. The hydraulic station for enabling the plugging and unplugging of the positioning pins on the mold change trolley according to any one of claims 1 to 3, characterized in that: the electromagnetic directional valve, the one-way valve, the branch overflow valve and the positioning oil cylinder form a control branch for realizing the plugging and unplugging of one positioning pin, and the hydraulic station is provided with a plurality of control branches for realizing the plugging and unplugging of a plurality of positioning pins.
5. The hydraulic station for realizing the plugging and unplugging of the positioning pin on the die change trolley according to claim 4, is characterized in that: the hydraulic station further comprises an oil suction filter, wherein the oil suction filter is additionally arranged on an oil line pipeline which is used for communicating an oil inlet of the oil pump with the oil tank, and the oil suction filter is immersed in hydraulic oil contained in the oil tank.
6. The hydraulic station for realizing the plugging and unplugging of the positioning pin on the die change trolley according to claim 5, is characterized in that: the hydraulic station further comprises a liquid level meter, and the liquid level meter is mounted on the inner wall of the oil tank.
7. The hydraulic station for realizing the plugging and unplugging of the positioning pin on the die change trolley according to claim 3, is characterized in that: when the first electromagnet of the electromagnetic directional valve is electrified and the second electromagnet is not electrified, hydraulic oil output by an oil outlet of the oil pump enters the rodless cavity of the positioning oil cylinder through the electromagnetic directional valve and the one-way valve, hydraulic oil in the rod cavity of the positioning oil cylinder returns oil through the electromagnetic directional valve, and a positioning pin connected with a piston rod of the positioning oil cylinder is inserted for operation; when the second electromagnet of the electromagnetic directional valve is electrified and the first electromagnet is not electrified, hydraulic oil output by the oil outlet of the oil pump enters the rod cavity of the positioning oil cylinder through the electromagnetic directional valve, hydraulic oil in the rod-free cavity of the positioning oil cylinder returns through the branch overflow valve, and the positioning pin connected with the piston rod of the positioning oil cylinder is pulled out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121040799.9U CN215257038U (en) | 2021-05-14 | 2021-05-14 | Hydraulic station for realizing plugging and unplugging of positioning pin on die changing trolley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121040799.9U CN215257038U (en) | 2021-05-14 | 2021-05-14 | Hydraulic station for realizing plugging and unplugging of positioning pin on die changing trolley |
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| Publication Number | Publication Date |
|---|---|
| CN215257038U true CN215257038U (en) | 2021-12-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121040799.9U Active CN215257038U (en) | 2021-05-14 | 2021-05-14 | Hydraulic station for realizing plugging and unplugging of positioning pin on die changing trolley |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215257038U (en) |
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2021
- 2021-05-14 CN CN202121040799.9U patent/CN215257038U/en active Active
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