CN210676807U - Lower ejection hydraulic device of die forging machine - Google Patents
Lower ejection hydraulic device of die forging machine Download PDFInfo
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- CN210676807U CN210676807U CN201921673739.3U CN201921673739U CN210676807U CN 210676807 U CN210676807 U CN 210676807U CN 201921673739 U CN201921673739 U CN 201921673739U CN 210676807 U CN210676807 U CN 210676807U
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- die forging
- piston rod
- forging machine
- oil cylinder
- cylinder body
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Abstract
A hydraulic device for lower ejection of a die forging machine comprises a connecting plate, an oil cylinder body which is provided with an upper oil receiving port and a lower oil receiving port and is vertically installed, a flange plate which is fixed at the upper end of the oil cylinder body and is installed on the connecting plate through a fastening bolt, a piston rod, a guide pillar which is in threaded connection with the upper part of the piston rod and is positioned by a pin shaft, an ejection shaft, a guide sleeve which is installed in a working table hole of a body of the die forging machine and used for guiding the ejection shaft, and a magnetostrictive linear displacement sensor; the magnetostrictive linear displacement sensor comprises a measuring rod, a displacement sensing device and a non-contact magnetic ring, wherein the measuring rod is positioned in a central long hole of the piston rod, is provided with an electronic bin and is installed on a central threaded hole of the bottom cover of the oil cylinder body through threaded connection, and the non-contact magnetic ring is sleeved on the measuring rod and is installed in the central large hole of the piston rod through a fastening screw. The utility model discloses the driving chain is simple, and the position and the displacement measurement of liftout are accurate, and transmission precision is high, the automatically regulated stroke. Can be widely used in the die forging forming process of a die forging machine.
Description
Technical Field
The invention relates to a hydraulic device for lower ejection of a die forging machine, which can be widely applied to the die forging forming process of the die forging machine.
Background
The existing lower ejection device is a mechanical ejection mechanism. The cam is adopted to rotate, and the swing shaft is driven to swing around the axis of the swing shaft through the upper lever, the pull rod and the lower lever, so that the material ejecting rod is pushed to eject. The structure has many transmission chains, poor transmission precision and no automatic stroke adjustment.
Disclosure of Invention
The invention aims to provide the hydraulic device for ejecting the lower part of the die forging machine, which has the advantages of simple transmission chain, accurate measurement of the position and displacement of the ejected material, high transmission precision and automatic stroke adjustment.
In order to achieve the aim, the hydraulic device for ejecting the lower part of the die forging machine comprises a connecting plate which is arranged on the bottom surface of a machine body of the die forging machine through a fastening bolt, an oil cylinder body which is provided with an upper oil receiving port and a lower oil receiving port and is vertically arranged, a flange which is fixed at the upper end of the oil cylinder body and is arranged on the connecting plate through the fastening bolt, a piston which is positioned in the oil cylinder body and is provided with an internal thread, a piston rod which is provided with a central large hole and a central long hole at the bottom and is in threaded connection with the piston, a guide pillar which is in threaded connection with the upper part of the piston rod and is provided with a pin shaft for positioning, an ejecting shaft which is arranged on the top surface of; the magnetostrictive linear displacement sensor comprises a measuring rod, a displacement sensing device and a non-contact magnetic ring, wherein the measuring rod is positioned in a central long hole of the piston rod, is provided with an electronic bin and is installed on a central threaded hole of the bottom cover of the oil cylinder body through threaded connection, and the non-contact magnetic ring is sleeved on the measuring rod and is installed in the central large hole of the piston rod through a fastening screw.
The invention relates to a hydraulic device for ejecting materials under a die forging machine, which has the ejection working principle that: when the material is ejected upwards, the oil inlet of the lower oil port of the oil cylinder pushes the piston rod to move upwards, when the ejected material returns downwards, the oil inlet of the upper oil port pushes the piston rod to move downwards, and at the moment, the oil return of the lower oil port is realized.
The invention relates to a hydraulic device for lower ejection of a die forging machine, which is characterized in that a magnetostrictive linear displacement sensor works according to the following working principle: when the piston rod moves up and down, the sensor magnetic ring fixed on the piston rod moves up and down along the measuring rod along with the piston rod. A magnetostrictive wire, also called a waveguide wire, is arranged in the measuring rod. When the rotary magnetic wave guide wire is in work, an electronic circuit in the electronic bin generates an initial pulse, and when the initial pulse is transmitted in the wave guide wire, a rotary magnetic field advancing along the direction of the wave guide wire is generated at the same time. When the magnetic field meets the permanent magnetic field in the non-contact magnetic ring, the magnetostrictive effect is generated, so that the waveguide wire is twisted to generate a twisting pulse, or a return pulse. The twisting pulse is sensed by an energy pick-up mechanism arranged in the electronic bin and converted into a corresponding current pulse, and the time difference between the start and the return of the two pulses is calculated through an electronic circuit, so that the position and the displacement of the piston rod to be measured can be accurately measured, and the position and the displacement of the ejection shaft can be measured. Therefore, the position and displacement measurement of the lifters is accurate.
The hydraulic device for ejecting materials under the die forging machine is characterized in that the output signal of the magnetostrictive linear displacement sensor is an absolute numerical value, but not a proportional signal or a signal needing to be amplified again. Therefore, the condition of signal drift or change value does not exist, namely, the current interruption reconnection does not cause a problem on data receiving, and the zero position does not need to be reset. The method has the advantages of high precision, high resolution, stability and reliability. In the normal use process, the detected position is an absolute position, cannot be changed due to power failure and is always the current real-time position.
Compared with the traditional mechanical material ejecting mechanism, the hydraulic device for ejecting the material from the lower part of the die forging machine adopts the hydraulic piston rod to push the material ejecting shaft to eject the material in the same axial direction, and the transmission chain is simple.
The hydraulic device for ejecting the lower part of the die forging machine has the advantages that the power direction is consistent with the ejecting direction, the transmission chain is short, and the guide sleeve is adopted for guiding, so the transmission precision is high.
The hydraulic device for ejecting the lower part of the die forging machine adopts the magnetostrictive linear displacement sensor, and can measure the position and the displacement of the ejected material in real time and adjust the position and the displacement, so that the stroke is automatically adjusted.
In conclusion, the hydraulic device for ejecting the lower part of the die forging machine has the advantages of simple transmission chain, accurate measurement of the position and the displacement of the ejected material, high transmission precision and automatic stroke adjustment.
Drawings
The invention will be further described with reference to the accompanying drawings and examples thereof.
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a partial enlarged view at I in fig. 1.
Detailed Description
In fig. 1 and 2, the hydraulic device for ejecting material from the lower part of a die forging machine comprises a connecting plate 1 which is arranged on the bottom surface of a machine body 12 of the die forging machine through a fastening bolt, an oil cylinder body 2 which is vertically arranged with an upper oil receiving port a and a lower oil receiving port b, a flange plate 3 which is fixed at the upper end of the oil cylinder body and is arranged on the connecting plate through the fastening bolt, a piston 4 which is positioned in the oil cylinder body and is provided with an internal thread, a piston rod 5 which is provided with a central large hole and a central long hole at the bottom and is in threaded connection with the piston, a guide pillar 6 which is in threaded connection with the upper part of the piston rod and is positioned by a pin shaft 13, an ejecting shaft 7 which is arranged on the top surface of the guide pillar, a guide; the magnetostrictive linear displacement sensor comprises a measuring rod 9, a displacement sensing device and a non-contact magnetic ring 11, wherein the measuring rod is positioned in a central long hole of a piston rod, is provided with an electronic bin 10 and is installed on a central threaded hole of a bottom cover of an oil cylinder body through threaded connection, and the non-contact magnetic ring is sleeved on the measuring rod and is installed in the central large hole of the piston rod through a fastening screw.
It should be understood that the above-described embodiments are merely exemplary of the present invention, and that various changes and modifications in the form, construction, features and spirit of the invention described in the claims should be included in the scope of the invention.
Claims (1)
1. A hydraulic device for lower ejection of a die forging machine is characterized by comprising a connecting plate, an oil cylinder body, a flange plate, a piston, a guide post, an ejection shaft, a guide sleeve and a magnetostrictive linear displacement sensor, wherein the connecting plate is installed on the bottom surface of a die forging machine body through a fastening bolt; the magnetostrictive linear displacement sensor comprises a measuring rod, a displacement sensing device and a non-contact magnetic ring, wherein the measuring rod is positioned in a central long hole of the piston rod, is provided with an electronic bin and is installed on a central threaded hole of the bottom cover of the oil cylinder body through threaded connection, and the non-contact magnetic ring is sleeved on the measuring rod and is installed in the central large hole of the piston rod through a fastening screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921673739.3U CN210676807U (en) | 2019-10-09 | 2019-10-09 | Lower ejection hydraulic device of die forging machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921673739.3U CN210676807U (en) | 2019-10-09 | 2019-10-09 | Lower ejection hydraulic device of die forging machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210676807U true CN210676807U (en) | 2020-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921673739.3U Active CN210676807U (en) | 2019-10-09 | 2019-10-09 | Lower ejection hydraulic device of die forging machine |
Country Status (1)
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| CN (1) | CN210676807U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112247061A (en) * | 2020-10-23 | 2021-01-22 | 一重集团大连工程技术有限公司 | Lower ejection device for heavy-load forging machine |
-
2019
- 2019-10-09 CN CN201921673739.3U patent/CN210676807U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112247061A (en) * | 2020-10-23 | 2021-01-22 | 一重集团大连工程技术有限公司 | Lower ejection device for heavy-load forging machine |
| CN112247061B (en) * | 2020-10-23 | 2022-05-20 | 一重集团大连工程技术有限公司 | Lower ejection device for heavy-load forging machine |
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