CN217107618U - Integrated overload protection device - Google Patents
Integrated overload protection device Download PDFInfo
- Publication number
- CN217107618U CN217107618U CN202220457433.XU CN202220457433U CN217107618U CN 217107618 U CN217107618 U CN 217107618U CN 202220457433 U CN202220457433 U CN 202220457433U CN 217107618 U CN217107618 U CN 217107618U
- Authority
- CN
- China
- Prior art keywords
- oil
- overload protection
- valve
- oil tank
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model provides an integral type overload protection device, which comprises an oil tank, overload protection ware, the air-vent valve, the air feed solenoid valve, instruction relief valve and slider pneumatic cylinder, wherein overload protection ware installs at the oil tank top, it links to each other with inhaling oil pipe through returning oil pipe respectively between overload protection ware and the oil tank, the air feed solenoid valve is installed in overload protection ware's compressed air intake pipe, the air-vent valve is installed on the admission line of air feed solenoid valve, the oil-out of oil tank passes through the pipeline and is connected with the slider pneumatic cylinder, the instruction relief valve is installed on the pipeline that oil tank oil-out and slider pneumatic cylinder are connected, the pressurized chamber of seting up on the overload protection ware passes through the pipeline and is connected with the slider pneumatic cylinder. The integrated overload protection device has the advantages of compact structure, ingenious design, high reaction speed and high action precision by adopting the regulation of air pressure to control the unloading pressure, capability of controlling the unloading oil pressure within +/-5% of the set pressure, compact structure, small volume, light weight, convenience in installation and simplicity in operation.
Description
Technical Field
The utility model relates to an overload protection device, concretely relates to integral type overload protection device.
Background
The press is a machine for metal forming, and in practical use, the working pressure of the slide is beyond the allowable range for many reasons: if the press is selected improperly, the die is adjusted improperly, blanks are overlapped, and the material strength is improved; this not only dulls the die edge, but also causes damage to equipment and personal injury once foreign matter has fallen into the die cavity.
In the prior art, the overload protection of the press machine generally adopts hydraulic overload protection or rigid overload protection, when the hydraulic overload protection is adopted, an oil cylinder is arranged on the pressure bearing surface of the press machine, when the press machine is overloaded, the oil cylinder is opened to drain oil outwards, and a piston in the oil cylinder moves downwards, so that the purpose of protecting the press machine is achieved; when rigid overload protection is adopted, the pressure bearing surface of the press machine is provided with the collapse block, and when the press machine is overloaded, the collapse block is collapsed, so that the purpose of protecting the press machine is achieved; the two protection schemes have the defects that the hydraulic overload protection device is adopted, the structure is complex, the size is large, the precision control on the unloading pressure is very strict, and the price is high; when rigid overload protection is adopted, the size of a press ram is large, and the cutting force of a collapse block during collapse cannot be adjusted.
SUMMERY OF THE UTILITY MODEL
The utility model provides a to prior art not enough, the utility model provides an integral type overload protection device adopts and adjusts atmospheric control off-load pressure, compact structure, and control is simple, convenient operation.
In order to realize the technical scheme, the utility model provides an integral type overload protection device, include: the oil tank, overload protection ware, the air-vent valve, the air feed solenoid valve, instruction relief valve and slider pneumatic cylinder, wherein overload protection ware installs at the oil tank top, link to each other through returning oil pipe and oil absorption pipe respectively between overload protection ware and the oil tank, the air feed solenoid valve is installed in overload protection ware's compressed air intake pipe, the air-vent valve is installed on the admission line of air feed solenoid valve, the oil-out of oil tank passes through the pipeline and is connected with the slider pneumatic cylinder, the instruction relief valve is installed on the pipeline that the oil tank oil-out is connected with the slider pneumatic cylinder, the last pressurized cavity of seting up of overload protection ware passes through the pipeline and is connected with the slider pneumatic cylinder.
In the above technical scheme, during actual operation, during normal operation, compressed air is delivered to a compressed air inlet pipe of the overload protector through an air supply solenoid valve after being regulated by a pressure regulating valve, a certain pressure is applied to an oil tank by the overload protector, so that hydraulic oil in the oil tank is injected into a sliding block hydraulic cylinder with a certain pre-pressure through a command relief valve, normal operation of the press machine is ensured, once an overload condition occurs, the hydraulic oil in the sliding block hydraulic cylinder is further compressed to generate overload pressure oil, the overload pressure oil is pressed into the oil tank through the command relief valve and a related pipeline, the overload pressure oil is introduced into the overload protector through an oil suction pipe, the overload protector enters the oil tank again through an oil return pipe of the load protector, the air supply solenoid valve is powered off after receiving an oil return signal, the sliding block stops moving, the press machine cannot normally operate, and overload protection of the press machine is achieved.
Preferably, the overload protector comprises a main valve, an oil supply control valve and a microswitch which are installed in the shell, wherein a first interface of the main valve is connected with the air supply electromagnetic valve, a second interface of the main valve is connected with the oil tank through an oil return pipe, a third interface of the main valve is respectively connected with the oil supply control valve and the microswitch through pipelines, an oil inlet of the oil supply control valve is connected with the oil tank through an oil suction pipe, and an oil outlet of the oil supply control valve is connected with a pressurized cavity arranged on the shell through a pipeline. During actual operation, compressed air is conveyed into a main valve of the overload protector through an air supply electromagnetic valve after being regulated by a pressure regulating valve, the main valve drives an oil supply control valve to apply certain pressure to an oil tank, so that hydraulic oil in the oil tank is injected into a sliding block hydraulic cylinder through a command pressure release valve, the normal operation of the press machine is ensured, and at the moment, a microswitch is in an open state. Once overload occurs, hydraulic oil in the sliding block hydraulic cylinder is further compressed, overload pressure oil is generated and is reversely pressed into an oil tank through the instruction pressure release valve and a related pipeline, part of the overload pressure oil is reversely led into the oil supply control valve through the oil suction pipe and then enters the oil tank again through the main valve and the oil return pipe, the micro switch receives signals and then controls the power-off of the air supply electromagnetic valve, the sliding block stops moving, and the press cannot normally run, so that the overload protection of the press is realized.
Preferably, the bottom of the oil suction pipe is provided with a filter to prevent impurities from entering the overload protector.
Preferably, an oil level indicator capable of displaying the height of the oil level is installed on the front side face of the oil tank, and the height of the oil level in the oil tank can be monitored in real time.
Preferably, the overload protector is fixed on the top of the oil tank through a mounting seat, so that the overload protector can be conveniently and integrally mounted.
The utility model provides a pair of integral type overload protection device's beneficial effect lies in: the integrated overload protection device is compact in structure, ingenious in design, convenient to operate and adopts the regulation air pressure to control the unloading pressure. During actual work, during normal work, compressed air is conveyed into a compressed air inlet pipe of the overload protector through an air supply electromagnetic valve after being regulated by a pressure regulating valve, a certain pressure is applied to an oil tank by the overload protector, so that hydraulic oil in the oil tank is injected into a sliding block hydraulic cylinder through a command relief valve, the normal operation of the press is guaranteed, once an overload condition occurs, the hydraulic oil in the sliding block hydraulic cylinder is further compressed, the generated overload pressure oil is pressed into the oil tank through the command relief valve and a related pipeline, the overload pressure oil is guided into the overload protector through an oil suction pipe, and then enters the oil tank again through an oil return pipe of the load protector, the air supply electromagnetic valve is powered off after receiving an oil return signal, the sliding block stops moving, the press cannot normally operate, and therefore overload protection of the press is achieved.
Drawings
Fig. 1 is a schematic diagram of the system pipeline connection of the present invention.
Fig. 2 is a schematic view of the three-dimensional structure of the present invention.
Fig. 3 is a perspective view of a part of the internal structure of the present invention.
Fig. 4 is a front view of the structure of the present invention.
Fig. 5 is a side view of the structure of the present invention.
In the figure: 1. an oil tank; 2. an overload protector; 21. a main valve; 22. a fuel supply control valve; 23. a microswitch; 3. a pressure regulating valve; 4. an air supply solenoid valve; 5. commanding a pressure relief valve; 6. a slider hydraulic cylinder; 7. a mounting seat; 8. oil marks; 9. an oil return pipe; 10. an oil suction pipe; 11. and (3) a filter.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by a person skilled in the art without any inventive step are within the scope of the present invention.
Example (b): an integrated overload protection device.
Referring to fig. 1 to 5, an integrated overload protection apparatus includes: the oil tank 1, the overload protector 2, the pressure regulating valve 3, the air supply electromagnetic valve 4, the instruction pressure relief valve 5 and the slider hydraulic cylinder 6, wherein the overload protector 2 is fixed on the top of the oil tank 1 through the mounting seat 7, the oil pointer 8 capable of displaying the height of the oil level is installed on the front side surface of the oil tank 1, the height of the oil level in the oil tank 1 can be monitored in real time, the overload protector 2 is convenient to integrally install and disassemble, the overload protector 2 is connected with the oil tank 1 through the oil return pipe 9 and the oil suction pipe 10 respectively, the overload protector 2 comprises a main valve 21, an oil supply control valve 22 and a micro switch 23 which are installed in a shell, wherein a first interface of the main valve 21 is connected with the air supply electromagnetic valve 4 through a pipeline, a second interface of the main valve 21 is connected with the oil tank 1 through the oil return pipe 9, a third interface of the main valve 21 is connected with the oil supply control valve 22 and the micro switch 23 through a pipeline respectively, the oil inlet of oil feed control valve 22 is connected with oil tank 1 through inhaling oil pipe 10, inhales oil pipe 10 bottom and installs filter 11, avoids impurity to get into overload protector 2, the pressurized chamber that sets up is passed through on pipeline and the casing to the oil-out of oil feed control valve 22 is connected, and air feed solenoid valve 4 is installed in overload protector 2 in the intake pipe of main valve 21, and air-vent valve 3 is installed on air feed solenoid valve 4's admission line, and the oil-out of oil tank 1 passes through the pipeline and is connected with slider pneumatic cylinder 6, and instruction relief valve 5 is installed on the pipeline that oil tank 1 oil-out and slider pneumatic cylinder 6 are connected, and the pressurized chamber that sets up on overload protector 2 passes through the pipeline and is connected with slider pneumatic cylinder 6.
The integrated overload protection device is compact in structure, ingenious in design, convenient to operate and adopts the regulation air pressure to control the unloading pressure. During actual operation, compressed air is regulated by the pressure regulating valve 3 and then is delivered into the main valve 21 of the overload protector 2 through the air supply electromagnetic valve 4, at this time, the main valve 21 drives the oil supply control valve 22 to apply certain pressure to the oil tank 1, so that hydraulic oil in the oil tank 1 injects hydraulic oil with certain pre-pressure into the slider hydraulic cylinder 6 through the instruction pressure release valve 5, normal operation of the press is ensured, and at this time, the microswitch 23 is in an open state. Once overload occurs, the hydraulic oil in the slide block hydraulic cylinder 6 is further compressed, the generated overload pressure oil is reversely pressed into the oil tank 1 through the instruction relief valve 5 and related pipelines, part of the overload pressure oil is reversely led into the oil supply control valve 22 through the oil suction pipe 10, and then enters the oil tank 1 again through the main valve 21 and the oil return pipe 9, the micro switch 23 receives signals and then controls the power-off of the air supply electromagnetic valve 4, the slide block stops moving, the press cannot normally operate, and therefore overload protection of the press is achieved. The integrated overload protection device has the advantages of high reaction speed, high action precision, capability of controlling the unloading oil pressure within +/-5% of the set pressure, compact structure, small size, light weight, convenience in installation and simplicity in operation, and can protect a press machine and a die thereof from being overloaded and damaged in the stamping operation.
The above description is a preferred embodiment of the present invention, but the present invention should not be limited to the disclosure of the embodiment and the accompanying drawings, and therefore, all equivalents and modifications that can be accomplished without departing from the spirit of the present invention are within the protection scope of the present invention.
Claims (5)
1. An integrated overload protection device, comprising: the oil tank, overload protection ware, the air-vent valve, the air feed solenoid valve, instruction relief valve and slider pneumatic cylinder, wherein overload protection ware installs at the oil tank top, link to each other through returning oil pipe and oil absorption pipe respectively between overload protection ware and the oil tank, the air feed solenoid valve is installed in overload protection ware's compressed air intake pipe, the air-vent valve is installed on the admission line of air feed solenoid valve, the oil-out of oil tank passes through the pipeline and is connected with the slider pneumatic cylinder, the instruction relief valve is installed on the pipeline that the oil tank oil-out is connected with the slider pneumatic cylinder, the last pressurized cavity of seting up of overload protection ware passes through the pipeline and is connected with the slider pneumatic cylinder.
2. The integrated overload protection device of claim 1, wherein: the overload protector comprises a main valve, an oil supply control valve and a microswitch which are installed in a shell, wherein a first interface of the main valve is connected with an air supply electromagnetic valve, a second interface of the main valve is connected with an oil tank through an oil return pipe, a third interface of the main valve is connected with the oil supply control valve and the microswitch through pipelines respectively, an oil inlet of the oil supply control valve is connected with the oil tank through an oil suction pipe, and an oil outlet of the oil supply control valve is connected with a pressure receiving cavity formed in the shell through a pipeline.
3. The integrated overload protection device of claim 2, wherein: the bottom of the oil suction pipe is provided with a filter.
4. The integrated overload protection device of claim 3, wherein: and an oil scale capable of displaying the height of the oil level is arranged on the front side surface of the oil tank.
5. The integrated overload protection device of claim 1, wherein: the overload protector is fixed on the top of the oil tank through a mounting seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220457433.XU CN217107618U (en) | 2022-03-03 | 2022-03-03 | Integrated overload protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220457433.XU CN217107618U (en) | 2022-03-03 | 2022-03-03 | Integrated overload protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217107618U true CN217107618U (en) | 2022-08-02 |
Family
ID=82600903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220457433.XU Active CN217107618U (en) | 2022-03-03 | 2022-03-03 | Integrated overload protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217107618U (en) |
-
2022
- 2022-03-03 CN CN202220457433.XU patent/CN217107618U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103670802B (en) | A kind of small air pillow pressurization system | |
| CN217107618U (en) | Integrated overload protection device | |
| CN110216180A (en) | A kind of wavy metal paillon stamping die | |
| US7197910B2 (en) | Die cushion apparatus of a press machine and surge pressure reduction method for a die cushion apparatus | |
| CN107052122A (en) | A kind of hydraulic pressure water swelling forming machine | |
| CN205147436U (en) | Automatic plate shearing machine | |
| CN208410076U (en) | A kind of Full-automatic filter cotton bicker | |
| CN211525257U (en) | Overload protection device of hydraulic equipment | |
| CN202056129U (en) | Ultrahigh pressure relief valve | |
| CN201787338U (en) | Natural gas decompressing device with diffused gas recycling system | |
| US2244420A (en) | Control system for hydraulic presses | |
| CN207057367U (en) | A kind of hydraulic pressure water swelling forming machine | |
| CN214685114U (en) | Press mounting equipment | |
| CN210153556U (en) | High pressure helium system | |
| CN212949312U (en) | Novel hydraulic pressurizing system of all-steel hydraulic vulcanizing machine | |
| CN201462377U (en) | Overload protection device of press machine | |
| CN111331915A (en) | Pneumatic system for press | |
| CN201002355Y (en) | Pressing machine multi-dot hydraulic pressure overload protective device | |
| CN202073759U (en) | Air compressor system and pressure flow control device thereof | |
| CN204239391U (en) | For the automatic pressure-maintaining system in dyestuff solid waste pressure filtering device | |
| CN204805182U (en) | Die casting machine boost -up circuit hydraulic system | |
| CN201218347Y (en) | Ultrahigh pressure cut-off valve for pressure regulator | |
| CN219552070U (en) | Laboratory loading press | |
| CN218151170U (en) | Emergency stop device and diesel engine thereof | |
| CN213954071U (en) | Efficient and stable hydraulic system of large plate shearing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 526238 Linjiang Industrial Zone, hi tech Zone, Guangdong, Zhaoqing Patentee after: Guangdong Huamao Precision Manufacturing Co.,Ltd. Address before: 526238 Linjiang Industrial Zone, hi tech Zone, Guangdong, Zhaoqing Patentee before: HUAMAO MACHINERY (ZHAOQING) Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |