CN215719903U - Mode locking control oil way of injection molding machine - Google Patents
Mode locking control oil way of injection molding machine Download PDFInfo
- Publication number
- CN215719903U CN215719903U CN202121770255.8U CN202121770255U CN215719903U CN 215719903 U CN215719903 U CN 215719903U CN 202121770255 U CN202121770255 U CN 202121770255U CN 215719903 U CN215719903 U CN 215719903U
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- oil
- valve
- mode locking
- path
- injection molding
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a mode locking control oil path of an injection molding machine, which comprises a mode locking cylinder and an oil tank, wherein a rod cavity of the mode locking cylinder is connected with a first oil path, and a rodless cavity of the mode locking cylinder is connected with a second oil path; a gating valve group is connected between the proportional direction valve and the oil return path; the oil circuit has the function of slow mold opening, the design of the throttle valve enables the oil circuit to form mold opening backpressure, the pressure impact of high-pressure mold opening is effectively improved, the loop design of the check valve meets the requirement of the function of extremely fast mold opening, and meanwhile, the response and the stability of the action of a hydraulic system are improved.
Description
Technical Field
The utility model relates to the technical field of injection molding machines, in particular to a mold locking control oil path of an injection molding machine.
Background
The injection molding machine utilizes the hydraulic cylinder as power when the compound die, and the motion of compound die hydro-cylinder is injectd to clamping mechanism when the emergency exit of injection molding machine is opened to ensure operator's personal safety, current clamping mechanism maloperation or solenoid directional valve action failure all can cause the threat to operator's personal safety, have very big potential safety hazard, the security performance is poor.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. The mold locking control oil path of the injection molding machine is characterized by further comprising a proportional direction valve, a hydraulic safety valve and an oil return path, wherein the proportional direction valve is communicated with the first oil path, a differential mold locking branch oil path is connected to the proportional direction valve, and the proportional direction valve and the differential mold locking branch oil path are connected to the hydraulic safety valve before being communicated with the second oil path; and a gating valve group is connected between the proportional direction valve and the oil return path.
According to some embodiments of the utility model, the gate valve set comprises a gate valve, a throttle valve and a control valve, the gate valve selectively connects control oil to the control valve or a differential mode locking branch oil path, the throttle valve is connected to the gate valve before the gate valve is connected to the control valve, and the control valve is communicated with the oil tank.
According to some embodiments of the utility model, a mode locking oil way check valve is connected to the differential mode locking branch oil way.
According to some embodiments of the utility model, the proportional directional valve is communicated with an oil inlet oil way, and the oil inlet oil way is provided with a gear pump, a servo motor and a pressure sensor.
According to some embodiments of the utility model, the oil inlet passage is fitted with a filter.
According to some embodiments of the utility model, the tank contains a level gauge.
The utility model has at least the following beneficial effects:
1. the oil circuit is provided with a hydraulic safety valve, and has an electric and hydraulic dual safety protection function for the mold locking action. The requirement that semi-automatic production can be normally carried out when the safety door is opened is met. In the semi-automatic production, after the mold locking action is finished, an operator can open the safety door to take out the product.
2. The slow die opening function and the design of the throttle valve enable the oil path to form die opening backpressure, and effectively improve the pressure impact of high-pressure die opening.
3. The loop design of the one-way valve meets the special mode locking function, and meanwhile, the response and the stability of the action of the hydraulic system are improved.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is an overall schematic diagram of an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
Referring to fig. 1, a mold locking control oil circuit of an injection molding machine includes a mold locking cylinder 100, an oil tank 200, a liquid level meter 210 installed in the oil tank 200; the hydraulic locking device is characterized by further comprising a proportional directional valve 300, a hydraulic safety valve 400 and an oil return path 500, wherein the proportional directional valve 300 is communicated with the first oil path 101, the proportional directional valve 300 is connected with a differential locking branch oil path 600, and the hydraulic safety valve 400 is connected to the proportional directional valve 300 and the differential locking branch oil path 600 before the proportional directional valve 300 and the differential locking branch oil path 600 are communicated with the second oil path 102; a selector valve 710 group 700 is connected between the proportional directional valve 300 and the oil return path 500.
The selector valve 710 group 700 comprises a selector valve 710, a throttle valve 720 and a control valve 730, the selector valve 710 selectively connects the control oil to the control valve 730 or the differential mode locking branch oil path 600, the throttle valve 720 is connected before the selector valve 710 is connected with the control valve 730, the control valve 730 is connected with the oil tank 200,
a mode locking oil way one-way valve 610 is connected to the differential mode locking branch oil way 600.
An oil inlet path 800 is communicated with the proportional directional valve 300, a gear pump 810, a servo motor 820 and a pressure sensor 830 are arranged on the oil inlet path 800, and a filter 840 is arranged on the oil inlet path 800.
The hydraulic safety valve 400 is an active plug-in type with valve core position detection, a power supply signal of the hydraulic safety valve is controlled by a travel switch of a movable safety door, after the safety door is opened, an electromagnet YA30 signal of the hydraulic safety valve 400 is cut off, the hydraulic safety valve 400 is in an internal oil cavity pressure control state, and a working oil path is further described as follows:
1. and (3) locking the mold: when the safety door is closed and YA3, YA30 and YA21 are powered on simultaneously, the control valve 730 is in an on T state, and VB4 is in an open state and can perform mode locking action.
2. And (3) very fast mode locking action: when the safety door is closed and YA3, YA30 and YA10 are powered on simultaneously, the control valve 730 is in an A-way P state, VB4 is in a closed state, and oil at the T port of the proportional directional valve 300 passes through the mode locking oil way one-way valve 610 on the differential mode locking branch oil way 600 to perform rapid mode locking action.
3. Slow die opening action: when the safety door is closed and YA9 and YA30 are powered simultaneously, the electric valve spool of the control valve 730 is in the middle position, VB4 is in a closed state, and oil at the T port of the proportional directional valve 300 passes through the throttle valve 720 and can perform slow die opening action; when the safety door is opened, the YA30 signal is cut off, the hydraulic pressure safety valve 400 is opened under the action of the internal valve cavity pressure, and the mold opening operation can be normally carried out.
4. And (3) quick die opening action: when the safety door is closed and YA9, YA30 and YA21 are powered on simultaneously, the control valve 730 is in an on T state, and VB4 is in an open state, so that the rapid die opening action can be performed; when the safety door is opened, the YA30 signal is cut off, the hydraulic pressure safety valve 400 is opened under the action of the internal valve cavity pressure, and the mold opening operation can be normally carried out.
The oil circuit has the function of slow mold opening, the design of the throttle valve 720 enables the oil circuit to form mold opening backpressure, the pressure impact of high-pressure mold opening is effectively improved, the loop design of the check valve meets the function of express mold locking, and meanwhile, the response and the stability of the action of a hydraulic system are improved.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (6)
1. A mode locking control oil path of an injection molding machine comprises a mode locking cylinder (100) and an oil tank (200), wherein a rod cavity of the mode locking cylinder (100) is connected with a first oil path (101), and a rodless cavity of the mode locking cylinder (100) is connected with a second oil path (102), and the mode locking control oil path is characterized by further comprising a proportional direction valve (300), a hydraulic safety valve (400) and an oil return path (500), wherein the proportional direction valve (300) is communicated with the first oil path (101), a differential mode locking branch oil path (600) is connected to the proportional direction valve (300), and the differential mode locking branch oil path (600) is connected to the hydraulic safety valve (400) before being communicated with the second oil path (102); a selector valve (710) group (700) is connected between the proportional direction valve (300) and the oil return path (500).
2. The mold-locking control oil circuit of an injection molding machine according to claim 1, wherein the group (700) of the gate valve (710) comprises a gate valve (710), a throttle valve (720) and a control valve (730), the gate valve (710) selectively connects control oil to the control valve (730) or the differential mold-locking branch oil circuit (600), the throttle valve (720) is connected before the gate valve (710) is connected to the control valve (730), and the control valve (730) is connected to the oil tank (200).
3. The mold-locking control oil circuit of an injection molding machine according to claim 1, wherein a mold-locking oil circuit check valve (610) is connected to the differential mold-locking branch oil circuit (600).
4. The mold-locking control oil circuit of an injection molding machine according to claim 1, wherein an oil inlet circuit (800) is communicated with the proportional directional valve (300), and a gear pump (810), a servo motor (820) and a pressure sensor (830) are mounted on the oil inlet circuit (800).
5. The mold-locking control circuit of an injection molding machine according to claim 4, wherein a filter (840) is attached to the oil inlet circuit (800).
6. The mold-locking control circuit of an injection molding machine according to claim 1, wherein a liquid level gauge (210) is installed in the oil tank (200).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121770255.8U CN215719903U (en) | 2021-07-30 | 2021-07-30 | Mode locking control oil way of injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121770255.8U CN215719903U (en) | 2021-07-30 | 2021-07-30 | Mode locking control oil way of injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215719903U true CN215719903U (en) | 2022-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121770255.8U Active CN215719903U (en) | 2021-07-30 | 2021-07-30 | Mode locking control oil way of injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215719903U (en) |
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2021
- 2021-07-30 CN CN202121770255.8U patent/CN215719903U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Locking control oil circuit of injection molding machine Effective date of registration: 20230609 Granted publication date: 20220201 Pledgee: Agricultural Bank of China Limited Shunde Beijiao sub branch Pledgor: Guangdong Youzhu Precision Machinery Co.,Ltd. Registration number: Y2023980043427 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |