CN215237245U - Hydraulic liftout mechanism for stretching die - Google Patents
Hydraulic liftout mechanism for stretching die Download PDFInfo
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- CN215237245U CN215237245U CN202121213490.5U CN202121213490U CN215237245U CN 215237245 U CN215237245 U CN 215237245U CN 202121213490 U CN202121213490 U CN 202121213490U CN 215237245 U CN215237245 U CN 215237245U
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Abstract
The utility model provides a hydraulic pressure liftout mechanism for drawing die, it is including the lower mould, and lower mould center department is equipped with the liftout groove that runs through from top to bottom, and the vertical hydro-cylinder of installing in the liftout groove, the hydro-cylinder piston rod upwards is connected bottom the movable mould block, and the oil circuit of hydro-cylinder is connected with overflow valve, manual multichannel switching-over valve respectively, and the oil feed oil circuit of manual multichannel switching-over valve connects the vice jar loculus of hydraulic press, is equipped with the check valve on the oil feed oil circuit of manual multichannel switching-over valve. After the oil cylinder is in a pressure maintaining state, the main oil cylinder of the oil press moves downwards, the workpiece is formed in one step under the combined action of the upper die and the movable bottom die, when the oil cylinder continues to move downwards to exceed the set pressure of the overflow valve, the movable bottom die descends, and the upper die and the fixed bottom die are formed in two steps under the combined action of the upper die and the fixed bottom die. Can carry out the secondary after this scheme of adoption and stretch, its excellent in use effect, compact structure.
Description
Technical Field
The utility model relates to a drawing die especially indicates a hydraulic pressure liftout mechanism for drawing die.
Background
Drawing is a cold stamping process that utilizes a die to draw a flat blank or semi-finished blank into an open hollow part. The product shape that the drawing process can be made has the cylinder, the ladder shape, the sphere, the cone, the rectangle and other irregular opening hollow parts, the traditional drawing die master cylinder can only be drawn and formed once.
Disclosure of Invention
An object of the utility model is to provide a hydraulic pressure liftout mechanism for drawing die rational in infrastructure, excellent in use effect.
In order to achieve the above object, the present invention provides a technical solution: a hydraulic material ejecting mechanism for a drawing die comprises a lower die, wherein a material ejecting groove which penetrates through the lower die from top to bottom is formed in the center of the lower die, an oil cylinder is vertically installed in the material ejecting groove, a piston rod of the oil cylinder is upwards connected with the bottom of a movable bottom die, an oil path of the oil cylinder is respectively connected with an overflow valve and a manual multi-path reversing valve, an oil inlet oil path of the manual multi-path reversing valve is connected with a small cavity of an auxiliary cylinder of an oil press, and a check valve is arranged on an oil inlet oil path of the manual multi-path reversing valve.
And a throttle valve is arranged on an oil path between the manual multi-path reversing valve and the oil cylinder.
And a pressure gauge is arranged on an oil way between the overflow valve and the oil cylinder.
When the manual reversing valve is switched, the main oil way is cut off. The oil cylinder is in a pressure maintaining state, the main oil cylinder of the oil press moves downwards at the moment, the workpiece is formed in one step under the combined action of the upper die and the movable bottom die, the internal pressure of the oil cylinder (single-action oil cylinder) is increased along with the continuous downward movement of the main oil cylinder, when the set pressure of the overflow valve is exceeded, the oil cylinder moves downwards, the movable bottom die descends, the upper die and the fixed bottom die are formed in two steps under the combined action of the upper die and the fixed bottom die at the moment, and when the workpiece moves to the bottom of the oil cylinder, the stretching is finished. At the moment, the main oil cylinder moves upwards, and the workpiece is separated from the upper die. Can carry out the secondary after this scheme of adoption and stretch, its excellent in use effect, compact structure.
Drawings
Fig. 1 is a schematic view of the mold of the present invention.
Fig. 2 is a schematic diagram of the oil circuit control according to the present invention.
Detailed Description
The present invention will be further explained with reference to the drawings, and the preferred embodiment of the present invention is: referring to the attached drawings 1 and 2, the hydraulic ejecting mechanism for the drawing die in the embodiment comprises a lower die 7, an ejecting groove penetrating through the lower die 7 from top to bottom is formed in the center of the lower die 7, an oil cylinder 1 is vertically installed in the ejecting groove, a piston rod of the oil cylinder 1 is upwards connected with the bottom of a movable bottom die 8, an oil path of the oil cylinder 1 is respectively connected with an overflow valve 2 and a manual multi-path directional valve 4, and a throttle valve 3 is installed on the oil path between the manual multi-path directional valve 4 and the oil cylinder 1. An oil inlet oil way of the manual multi-way reversing valve 4 is connected with a small cavity of an auxiliary cylinder of the oil press, and a one-way valve 5 is arranged on the oil inlet oil way of the manual multi-way reversing valve 4. And a pressure gauge 6 is arranged on an oil way between the overflow valve 2 and the oil cylinder 1. The hydraulic system of this scheme comprises single-action hydro-cylinder 1, overflow valve 2, choke valve 3, manual multiple directional control valve 4, check valve 5, manometer 6, and the part is market conventional part, through reasonable installation and control back, and the hydro-cylinder is connected on tensile mould activity die block, and when manual directional control valve 4 switched, the main oil circuit was cut off. The oil cylinder is in a pressure maintaining state, and the pressure maintaining pressure can be adjusted through the overflow valve 2. The pressure value can be read by the pressure gauge 6. At the moment, a main oil cylinder of the oil press moves downwards, a workpiece is formed by the combined action of the upper die and the movable bottom die in one step, the internal pressure of the oil cylinder (single-acting oil cylinder) is increased along with the continuous downward movement of the main oil cylinder, when the set pressure of the overflow valve is exceeded, the oil cylinder moves downwards, the movable bottom die descends, the upper die and the fixed bottom die are formed in a secondary mode under the combined action of the upper die and the fixed bottom die at the moment, and when the upper die and the fixed bottom die move to the bottom of the oil cylinder, the stretching is finished. At the moment, the main oil cylinder moves upwards, and the workpiece is separated from the upper die. When the main oil cylinder moves to the top, the main oil cylinder stops moving. The manual multi-way valve is reversed, the auxiliary oil cylinder (blank holder) starts to move upwards, when the auxiliary oil cylinder moves to the top, the pressure rises, and the single-action oil cylinder ejects the workpiece. In order to prevent the pressure fluctuation in the system from influencing the hydraulic main system of the oil press, a check valve 5 is specially arranged, and a throttle valve 3 is additionally arranged for adjusting the material ejecting speed of a single-acting oil cylinder.
The above-mentioned embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so that all the changes made according to the shape and principle of the present invention should be covered within the protection scope of the present invention.
Claims (3)
1. The utility model provides a hydraulic pressure liftout mechanism for drawing die which characterized in that: the hydraulic press auxiliary cylinder device comprises a lower die (7), wherein a material ejecting groove which penetrates through the lower die (7) from top to bottom is formed in the center of the lower die (7), an oil cylinder (1) is vertically installed in the material ejecting groove, a piston rod of the oil cylinder (1) is upwards connected with the bottom of a movable bottom die (8), an oil path of the oil cylinder (1) is respectively connected with an overflow valve (2) and a manual multi-way reversing valve (4), an oil inlet oil path of the manual multi-way reversing valve (4) is connected with an auxiliary cylinder small cavity of the hydraulic press, and a check valve (5) is arranged on an oil inlet oil path of the manual multi-way reversing valve (4).
2. The hydraulic liftout mechanism for a drawing die of claim 1, wherein: and a throttle valve (3) is arranged on an oil path between the manual multi-path reversing valve (4) and the oil cylinder (1).
3. The hydraulic liftout mechanism for a drawing die of claim 1, wherein: and a pressure gauge (6) is arranged on an oil way between the overflow valve (2) and the oil cylinder (1).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021633553 | 2020-08-08 | ||
| CN2020216335538 | 2020-08-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215237245U true CN215237245U (en) | 2021-12-21 |
Family
ID=79475721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121213490.5U Active CN215237245U (en) | 2020-08-08 | 2021-06-02 | Hydraulic liftout mechanism for stretching die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215237245U (en) |
-
2021
- 2021-06-02 CN CN202121213490.5U patent/CN215237245U/en active Active
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