CN210334280U - Hydraulic control loop of pinch roll device of aluminum strip casting and rolling machine - Google Patents
Hydraulic control loop of pinch roll device of aluminum strip casting and rolling machine Download PDFInfo
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- CN210334280U CN210334280U CN201920717198.3U CN201920717198U CN210334280U CN 210334280 U CN210334280 U CN 210334280U CN 201920717198 U CN201920717198 U CN 201920717198U CN 210334280 U CN210334280 U CN 210334280U
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Abstract
The utility model discloses a hydraulic control loop of a pinch roll device of an aluminum strip casting and rolling machine, which comprises a first loop consisting of a sequence valve and a hydraulic motor, and a second loop consisting of a hydraulic cylinder, a one-way throttle valve, a hydraulic control one-way valve, an electromagnetic reversing valve and a pressure reducing valve, wherein the inlet of the sequence valve is connected with a rod cavity of the hydraulic cylinder, the outlet of the sequence valve is connected with the inlet of the hydraulic motor, and the outlet of the hydraulic motor is connected with an oil return port T1; the first loop and the second loop share one oil path, and the oil path is used for feeding oil into and returning oil to the hydraulic cylinder and the hydraulic motor. The utility model discloses change the proportional flow valve in original structure and solenoid directional valve into sequence valve, its theory of operation is simple, reasonable in design, and the operation is reliable, can satisfy the requirement of the different cast rolling materials of unit production, guarantees the tensile stability of cast rolling coil strip, improves the yield and the production efficiency of cast rolling book.
Description
Technical Field
The utility model belongs to the technical field of hydraulic control, especially, relate to an aluminium strip casting and rolling machine pinch roll device hydraulic control return circuit.
Background
The aluminum strip casting and rolling machine has the advantages of simple equipment composition, small occupied area, high construction speed and low construction cost; the continuous production can be realized, the production process is simplified, the production period is shortened, the number of production personnel is reduced, the maintenance is convenient, the production efficiency is high, and the automation is convenient to realize. Therefore, there is a market for aluminum strip casting and rolling machines.
For casting and rolling production, the pinch roll device mainly has the functions of providing strip tension when a strip is pulled and split coiled when a vertical plate is arranged, and the quality of the strip tail is directly influenced by the design of a hydraulic control loop of the pinch roll device. The pinch roll device of the casting and rolling machine comprises two actuating mechanisms, one is a hydraulic motor for controlling the pinch roll device to rotate, the hydraulic motor drives a speed reducer, and the speed reducer drives a lower pinch roll; the other one is a hydraulic cylinder for controlling the swing of the upper roll of the pinch roll device, the hydraulic cylinder comprises two hydraulic cylinders (one on each of a transmission side and an operation side), the upper roll of the pinch roll device is controlled at the same time, and the rotation of the upper roll is passive. When the upper roller of the pinch roller device swings down to clamp the strip, the lower roller rotates to pinch the strip to move towards the direction of the coiler, and meanwhile, the strip is guaranteed to be always kept at a certain tension value. And the hydraulic control return circuit of pinch roll device of the casting and rolling machine among the prior art is complicated, causes the construction cost in earlier stage of the project and later maintenance cost to increase, has wasted financial resources and material resources of enterprise like this, and the enterprise efficiency is not high.
As shown in fig. 1, the driving of the pinch roll device of the casting and rolling machine in the prior art is realized by that when a pinch roll pendulum down clamping command is sent, the b end of an electromagnetic directional valve 7 is electrified, an upper pinch roll pendulum down clamps a strip, and simultaneously the b end of an electromagnetic directional valve 2 is electrified, and a proportional flow valve 1A is connected with a fixed voltage or current value according to the set speed of the strip to drive the lower pinch roll to rotate; when a pinch roll swinging command is sent, the end a of the electromagnetic reversing valve 7 is electrified, the upper pinch roll swings away from the strip, and the end b of the electromagnetic reversing valve 2 and the proportional flow valve 1 are powered off simultaneously; when the upper pinch roll returns to the lift signal position, the a end of the electromagnetic directional valve 7 loses power. In the prior art, a hydraulic control loop of a hydraulic motor 3 for controlling the lower roller of the pinch roll device to rotate selects a proportional flow control valve 1 and an electromagnetic directional valve 2, the proportional flow control valve 1 is expensive, and has high requirement on oil cleanliness, so that the early engineering construction cost and the later operation cost are overhigh.
Disclosure of Invention
In order to solve the problem, the utility model aims at providing an aluminium strip casting and rolling machine pinch roll device hydraulic control return circuit, when the riser pulls and the bundling strip, the fine completion pinch roll in this hydraulic control return circuit is to the clamp of strip and tensioning function, saves the construction cost in earlier stage for the enterprise, and later stage use is maintained simply, further improves the benefit of enterprise.
In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:
a hydraulic control loop of a pinch roll device of an aluminum strip casting and rolling machine comprises a first loop consisting of a sequence valve and a hydraulic motor and a second loop consisting of a hydraulic cylinder, a one-way throttle valve, a hydraulic control one-way valve, an electromagnetic reversing valve and a pressure reducing valve, wherein the inlet of the sequence valve is connected with a rod cavity of the hydraulic cylinder, the outlet of the sequence valve is connected with the inlet of the hydraulic motor, and the outlet of the hydraulic motor is connected with an oil return port T1; the first loop and the second loop share one oil path, and the oil path is used for feeding oil into and returning oil to the hydraulic cylinder and the hydraulic motor.
Furthermore, the pressure reducing valve, the hydraulic control one-way valve and the one-way throttle valve are all superposed valves.
Due to the adoption of the technical scheme, the utility model discloses have following superiority:
the utility model discloses change the proportional flow valve in original structure and solenoid directional valve into sequence valve, its theory of operation is simple, reasonable in design, and the operation is reliable, can satisfy the requirement of the different cast rolling materials of unit production, guarantees the tensile stability of cast rolling coil strip, improves the yield and the production efficiency of cast rolling book.
Drawings
FIG. 1 is a hydraulic control circuit diagram of a pinch roll apparatus of a prior art aluminum strip caster;
FIG. 2 is a hydraulic control circuit diagram of the present invention;
in the figure: 1-proportional flow valve; 2-an electromagnetic directional valve; 3-a hydraulic motor; 4-a hydraulic cylinder; 5-one-way throttle valve; 6-hydraulic control one-way valve; 7-an electromagnetic directional valve; 8-a pressure reducing valve; 9-sequence valve.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and examples.
As shown in fig. 2, the hydraulic control circuit of the pinch roll device of the aluminum strip casting and rolling machine comprises a first circuit consisting of a sequence valve 9 and a hydraulic motor 3, and a second circuit consisting of a hydraulic cylinder 4, a one-way throttle valve 5, a hydraulic control one-way valve 6, an electromagnetic directional valve 2 and a pressure reducing valve 8, wherein an inlet of the sequence valve 9 is connected with a rod cavity of the hydraulic cylinder 4, an outlet of the sequence valve 9 is connected with an inlet of the hydraulic motor 3, and an outlet of the hydraulic motor 3 is connected with an oil return port T1; the first loop and the second loop share one oil path, and the oil path is used for feeding oil into the hydraulic cylinder 4 and returning oil to the hydraulic motor 3.
The pressure reducing valve 8, the hydraulic control one-way valve 6 and the one-way throttle valve 5 are all superposed valves.
In practical applications, the oil supply port P1 and the oil return port T1 need to be connected to the oil port of the oil path block.
It should be noted that, in the present invention, the second loop composed of the hydraulic cylinder 4, the one-way throttle valve 5, the hydraulic control one-way valve 6, the electromagnetic directional valve 2 and the pressure reducing valve 8 is a known structure in the prior art, as shown in fig. 1, the connection relationship thereof is a known technology, and therefore, the description thereof is omitted.
The working principle of the utility model is as follows:
the first loop controls the lower roller of the pinch roll device to rotate, the control loop is realized in such a way that when the end b of the electromagnetic reversing valve of the second loop is electrified and clamped, the upper roller of the pinch roll device slowly falls down to clamp a strip, after the surface of the upper roller contacts the strip, the pressure of a rod cavity of the hydraulic cylinder is gradually increased, when the pressure reaches the pressure set by the sequence valve, the pressure oil of the rod cavity of the hydraulic cylinder is led to the inlet of the hydraulic motor to drive the hydraulic motor to rotate, and the tension of the strip can be simultaneously adjusted through the pressure reducing valve and the sequence valve; when the strip does not need to be pinch, the end a of the electromagnetic reversing valve is electrified, the end b of the electromagnetic reversing valve is electrified, the lower roller of the pinch roller device stops rotating, the upper roller leaves the surface of the strip, and when the upper roller of the pinch roller device returns to the original position, the end a of the electromagnetic reversing valve is electrified, and the pinch device keeps the original position.
And the second loop is used for controlling the clamping and the lifting of the upper roll of the pinch roll device, and the loop control belongs to a conventional control mode.
Claims (2)
1. The utility model provides an aluminium strip caster pinch roll device hydraulic control return circuit which characterized in that: the hydraulic control system comprises a first loop consisting of a sequence valve and a hydraulic motor, and a second loop consisting of a hydraulic cylinder, a one-way throttle valve, a hydraulic control one-way valve, an electromagnetic directional valve and a pressure reducing valve, wherein the inlet of the sequence valve is connected with a rod cavity of the hydraulic cylinder, the outlet of the sequence valve is connected with the inlet of the hydraulic motor, and the outlet of the hydraulic motor is connected with an oil return port T1; the first loop and the second loop share one oil path, and the oil path is used for feeding oil into and returning oil to the hydraulic cylinder and the hydraulic motor.
2. The hydraulic control circuit of the pinch roll unit of the aluminum strip casting and rolling machine as recited in claim 1, wherein: the pressure reducing valve, the hydraulic control one-way valve and the one-way throttle valve are all superposed valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920717198.3U CN210334280U (en) | 2019-05-20 | 2019-05-20 | Hydraulic control loop of pinch roll device of aluminum strip casting and rolling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920717198.3U CN210334280U (en) | 2019-05-20 | 2019-05-20 | Hydraulic control loop of pinch roll device of aluminum strip casting and rolling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210334280U true CN210334280U (en) | 2020-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920717198.3U Active CN210334280U (en) | 2019-05-20 | 2019-05-20 | Hydraulic control loop of pinch roll device of aluminum strip casting and rolling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210334280U (en) |
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2019
- 2019-05-20 CN CN201920717198.3U patent/CN210334280U/en active Active
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