CN108994137B - Ejector rod switching device of hydraulic press - Google Patents
Ejector rod switching device of hydraulic press Download PDFInfo
- Publication number
- CN108994137B CN108994137B CN201810884081.4A CN201810884081A CN108994137B CN 108994137 B CN108994137 B CN 108994137B CN 201810884081 A CN201810884081 A CN 201810884081A CN 108994137 B CN108994137 B CN 108994137B
- Authority
- CN
- China
- Prior art keywords
- ejector rod
- floating plate
- rod
- cylinder
- ejector
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/0052—Details of, or accessories for, presses; Auxiliary measures in connection with pressing for fluid driven presses
Abstract
The invention discloses an ejector rod switching device of a hydraulic machine, which belongs to the technical field of plate forming presses and solves the technical problems that in the prior art, manual ejector rod replacement is time-consuming and labor-consuming and is prone to error. The ejector rod switching device can realize automatic switching of the ejector rods and avoid misoperation caused by manual switching.
Description
[ field of technology ]
The invention relates to the technical field of plate forming presses, in particular to a push rod switching device of a hydraulic press.
[ background Art ]
When the existing hydraulic press is used for process switching, the installation positions of the ejector rods need to be switched, and the switching of the ejector rods is required to depend on manual operation, namely, before the hot forming hydraulic press operates, workers select the positions where the ejector rods need to be placed according to the process, the positions are aligned to the ejector rod holes on the workbench, one part of the ejector rods are placed, and meanwhile, corresponding dust covers are installed on the ejector rod holes without the ejector rods. Therefore, the replacement of the ejector rod is time-consuming and labor-consuming, and meanwhile, different processes correspond to different ejector rod positions, and misoperation is easy to occur when the ejector rod is manually replaced, so that process molding of the hydraulic machine is affected, and even a die is damaged. Particularly, when the ejector rod is replaced by the thermoforming hydraulic machine, the worker can assemble and disassemble the ejector rod after the isothermal temperature is completely reduced due to higher working temperature of the thermoforming hydraulic machine, so that the replacement time of the ejector rod is further prolonged.
[ invention ]
The invention aims to solve the technical problem of overcoming the defects of the prior art and providing the ejector rod switching device of the hydraulic machine, which can realize automatic switching of the ejector rods, avoid misoperation caused by manual switching and prolong the operation efficiency of the hydraulic machine.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a push rod switching device of hydraulic press, the hydraulic press includes the base and installs workstation on the base, the cartridge has a plurality of push rod on the workstation, still be equipped with hydraulic cushion jar and floating plate on the base, the floating plate is installed the push rod below, hydraulic cushion jar drive the floating plate goes upward, so that the floating plate is ejecting upwards the push rod, be equipped with on the floating plate with the hole of dodging of push rod one-to-one, push rod switching device include control system, and with drive jar and the apron of dodging the hole one-to-one, drive jar and apron are installed the top of floating plate, control system control the drive jar drive the apron is in horizontal movement is done to the top surface of floating plate, in order to shelter from or reveal dodge the hole.
The control system can control the driving cylinder to drive the cover plate to horizontally move on the top surface of the floating plate so as to shield or expose the avoidance hole. When the ejector rod at a certain position is required to be ejected, the control system controls the driving cylinder to drive the cover plate to move so as to shield the avoiding hole, so that after the hydraulic cushion cylinder drives the floating plate to move upwards, the cover plate can be abutted against the lower end of the ejector rod and push the ejector rod to eject; when the ejector rod at a certain position is required to be ejected during operation, the control system controls the driving cylinder to drive the cover plate to move so as to expose the avoidance hole, so that after the hydraulic cushion cylinder drives the floating plate to move upwards, the lower end of the ejector rod can pass through the avoidance hole so as to prevent the floating plate from acting on the ejector rod, and the floating plate can not push the ejector rod to move upwards in the ascending process, so that the ejector rod at the position is ensured to be in a non-ejection state.
Further, the top surface of the floating plate is also provided with guide rails which are arranged in pairs, and the cover plate is slidably arranged between the two guide rails. So designed, the guide rail can guide the horizontal movement of the cover plate.
Further, a limiting boss is arranged at the top end of the ejector rod, a limiting groove matched with the limiting boss is formed in the workbench, and the ejector rod is hung on the workbench through the limiting boss. By the design, when the ejector rod is in a non-ejection state, the ejector rod can be prevented from being separated from the workbench, and the limiting groove can be shielded by the limiting boss, so that dust is prevented from entering the ejector rod hole on the workbench, and the installation of the dust cover is omitted.
Furthermore, when the ejector rod is in a hanging state, the top surface of the limiting boss is not higher than the top surface of the workbench. By the design, interference between the limiting boss and the die arranged on the workbench can be avoided, and the stability of die installation is ensured.
Further, the driving cylinder is a cylinder, the cylinder comprises a cylinder body and a driving rod stretching relative to the cylinder body, the control system comprises a controller and an electromagnetic valve connected with the cylinder through an air pipe, and the controller controls the stretching state of the driving rod by controlling the electrifying or the de-electrifying of the electromagnetic valve.
Further, a first magnetic sensor and a second magnetic sensor connected with the controller are arranged on the cylinder body, a piston connected with the driving rod is arranged in the cylinder body, a magnetic ring is arranged on the piston, the driving rod drives the cover plate to trigger the first magnetic sensor when shielding the avoidance hole, the driving rod drives the cover plate to return to expose the avoidance hole, and the magnetic ring triggers the second magnetic sensor. The design is that the controller can judge whether the ejector rod is ejected at present according to the received signal, so that the next action of the driving cylinder is controlled according to the result.
These features and advantages of the present invention will be disclosed in detail in the following detailed description and the accompanying drawings.
[ description of the drawings ]
The invention is further described with reference to the accompanying drawings:
FIG. 1 is a top view of a hydraulic cushion in a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram showing the structure of the ejector pin when the ejector pin is switched to be ejected according to the preferred embodiment of the present invention;
fig. 3 is a schematic structural diagram of the ejector pin in the preferred embodiment of the present invention when the ejector pin is switched to not ejected.
[ detailed description ] of the invention
The invention discloses an ejector rod switching device of a hydraulic machine, which comprises a base and a workbench arranged on the base, wherein a plurality of ejector rods are inserted into the workbench, a hydraulic cushion cylinder and a floating plate are further arranged on the base, the floating plate is arranged below the ejector rods, the hydraulic cushion cylinder drives the floating plate to ascend so as to enable the floating plate to upwards eject the ejector rods, the floating plate is provided with avoiding holes which are in one-to-one correspondence with the ejector rods, the ejector rod switching device comprises a control system, driving cylinders and cover plates which are in one-to-one correspondence with the avoiding holes, the driving cylinders and the cover plates are arranged at the top of the floating plate, and the control system controls the driving cylinders to drive the cover plates to do horizontal movement on the top surface of the floating plate so as to shield or expose the avoiding holes.
The control system can control the driving cylinder to drive the cover plate to horizontally move on the top surface of the floating plate so as to shield or expose the avoidance hole. When the ejector rod at a certain position is required to be ejected, the control system controls the driving cylinder to drive the cover plate to move so as to shield the avoiding hole, so that after the hydraulic cushion cylinder drives the floating plate to move upwards, the cover plate can be abutted against the lower end of the ejector rod and push the ejector rod to eject; when the ejector rod at a certain position is required to be ejected during operation, the control system controls the driving cylinder to drive the cover plate to move so as to expose the avoidance hole, so that after the hydraulic cushion cylinder drives the floating plate to move upwards, the lower end of the ejector rod can pass through the avoidance hole so as to prevent the floating plate from acting on the ejector rod, and the floating plate can not push the ejector rod to move upwards in the ascending process, so that the ejector rod at the position is ensured to be in a non-ejection state.
The technical solutions of the embodiments of the present invention will be explained and illustrated below with reference to the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all the embodiments. Based on the examples in the embodiments, those skilled in the art can obtain other examples without making any inventive effort, which fall within the scope of the invention.
As shown in fig. 1 to 3, the hydraulic press in the preferred embodiment includes a base 1 and a working table 2, the working table 2 is mounted on the base 1, a plurality of ejector rods 3 are inserted on the working table 2, the base 1 is a hollow bracket, a hydraulic cushion cylinder (not shown in the figure) and a floating plate 4 are further arranged in the base 1, the floating plate 4 is mounted below the ejector rods 3, and the hydraulic cushion cylinder drives the floating plate 4 to move upwards so that the floating plate 4 ejects the ejector rods 3 upwards. The floating plate 4 in the preferred embodiment is provided with avoidance holes 5 in one-to-one correspondence with the ejector rods 3, the ejector rod switching device comprises a control system, and a driving cylinder 6 and a cover plate 7 in one-to-one correspondence with the avoidance holes 5, the driving cylinder 6 and the cover plate 7 are arranged at the top of the floating plate 4, the driving cylinder 6 comprises a cylinder body and a driving rod horizontally arranged, a piston is arranged in the cylinder body, the cylinder body is divided into two chambers by the piston, one end of the driving rod is positioned in the cylinder body and connected with the piston, the other end of the driving rod extends out of the cylinder body and is connected with the cover plate 7 through screws, and the control system can control the driving cylinder 6 to drive the cover plate 7 to horizontally move on the top surface of the floating plate 4 so as to shield or expose the avoidance holes 5.
When the hydraulic press in the preferred embodiment works and the ejector rod 3 at a certain position is required to be ejected, the control system controls the driving cylinder 6 corresponding to the ejector rod 3 to drive the cover plate 7 to move so as to shield the avoidance hole 5, so that after the hydraulic cushion cylinder drives the floating plate 4 to ascend, the cover plate 7 can be abutted against the lower end of the ejector rod 3 and push the ejector rod 3 to eject; when the ejector rod 3 at a certain position is required to be ejected in operation, the control system controls the driving cylinder 6 corresponding to the ejector rod 3 to drive the cover plate 7 to move so as to expose the avoidance hole 5, so that after the hydraulic cushion cylinder drives the floating plate 4 to move upwards, the lower end of the ejector rod 3 can pass through the avoidance hole 5 so as to prevent the floating plate 4 from acting on the ejector rod 3, and the floating plate 4 can not push the ejector rod 3 upwards to move in the ascending process, so that the ejector rod 3 at the position is ensured to be in a non-ejected state. Therefore, the ejector rod switching device can automatically switch the ejector rods 3 through the control system, the driving cylinder 6 and the cover plate 7, avoids misoperation caused by manual switching, ensures the safety of workers, and particularly does not need to switch the ejector rods 3 after waiting for the temperature reduction of the thermoforming hydraulic machine when the ejector rod switching device is applied to the thermoforming hydraulic machine, thereby prolonging the operation efficiency of the thermoforming hydraulic machine.
Specifically, in order to guide the reciprocating movement of the cover plate 7, the top surface of the floating plate 4 in the preferred embodiment is further provided with guide rails 9 arranged in pairs, the length direction of the guide rails 9 is parallel to the movement direction of the cover plate 7, and the cover plate 7 is slidably mounted between the two guide rails 9.
In the preferred embodiment, the top end of the ejector rod 3 is provided with a limiting boss 31, the workbench 2 is provided with a limiting groove 21 matched with the limiting boss 31, and the ejector rod 3 is suspended on the workbench 2 through the limiting boss 31. In this way, when the ejector rod 3 is in the non-ejection state, the ejector rod 3 can be prevented from being separated from the workbench 2, and the limiting groove 21 can be shielded by the limiting boss 31, so that dust is prevented from entering the ejector rod hole on the workbench 2, and the installation of the dust cover is omitted. When the ejector rod 3 is in a hanging state, the top surface of the limit boss 31 is not higher than the top surface of the workbench 2. In this way, interference between the limiting boss 31 and the die mounted on the workbench 2 can be avoided, and the stability of die mounting is ensured.
In addition, the driving cylinder 6 in the preferred embodiment is a cylinder or an oil cylinder, in this embodiment, the cylinder is preferred, the control system comprises a controller, an electromagnetic valve 8 and an air pipe connected with the cylinder, one side of the electromagnetic valve 8 is provided with an air inlet 81 and air outlet holes 82 positioned at two sides of the air inlet 81, the air inlet 81 is connected with an air source, the other side of the electromagnetic valve 8 is provided with two working holes 83, the two working holes 83 are respectively communicated with two chambers in the cylinder body through the air pipe, the controller controls the air inlet and the air outlet of the two chambers through controlling the power on and power off of the electromagnetic valve 8, so that the effect of driving the driving rod to move through the movement of the driving piston is achieved, and the telescopic state of the driving rod is controlled.
In the preferred embodiment, a first magnetic sensor and a second magnetic sensor which are connected with a controller are further arranged on the cylinder body, a magnetic ring is arranged on the piston, when the driving rod drives the cover plate 7 to shield the avoidance hole 5, the magnetic ring triggers the first magnetic sensor, the first magnetic sensor sends a first position signal to the controller, and at the moment, the controller judges that the ejector rod 3 can be ejected; when the driving rod drives the cover plate 7 to return to expose the avoidance hole 5, the magnetic ring triggers the second magnetic sensor, the second magnetic sensor sends a second position signal to the controller, and at the moment, the controller judges that the ejector rod 3 cannot be ejected. In this way, the controller can determine whether the ejector rod 3 can be ejected at present according to the received position signal, so as to control the next action of the driving cylinder 6 according to the result, thereby ensuring that the ejector rod 3 is in a correct state.
During specific operation, each ejector rod 3 can be numbered, and then the controller controls the driving cylinder 6 corresponding to the ejector rod 3 to drive the cover plate 7 to move according to different process requirements, so that the ejector rod 3 can be ejected or not ejected, the automatic control of a control system is facilitated, and the automatic switching accuracy of the ejector rod 3 is improved.
It should be noted that, the ejector rod switching device in this embodiment may be applied to a hot forming hydraulic press, and may also be applied to other types of presses for forming plate members, especially presses in which the ejector rod is used for edge-pressing stretching or ejection in metal plate forming.
While the invention has been described in terms of embodiments, it will be appreciated by those skilled in the art that the invention is not limited thereto but rather includes the drawings and the description of the embodiments above. Any modifications which do not depart from the functional and structural principles of the present invention are intended to be included within the scope of the appended claims.
Claims (1)
1. The hydraulic press comprises a base and a workbench arranged on the base, wherein a plurality of ejector rods are inserted into the workbench, a hydraulic cushion cylinder and a floating plate are further arranged on the base, the floating plate is arranged below the ejector rods, the hydraulic cushion cylinder drives the floating plate to move upwards so as to enable the floating plate to eject the ejector rods upwards, the hydraulic press is characterized in that the floating plate is provided with avoiding holes which are in one-to-one correspondence with the ejector rods, the ejector rod switching device comprises a control system, a driving cylinder and a cover plate which are in one-to-one correspondence with the avoiding holes, the driving cylinder and the cover plate are arranged at the top of the floating plate, the control system controls the driving cylinder to drive the cover plate to horizontally move on the top surface of the floating plate so as to shield or expose the avoiding holes, the top surface of the floating plate is further provided with guide rails which are arranged in pairs, the cover plate is slidably arranged between the two guide rails, a limit boss is arranged at the top end of the ejector rod, a limit groove matched with the limit boss is arranged on the workbench, the ejector rod is hung on the workbench through the limit boss, when the ejector rod is in a hanging state, the top surface of the limit boss is not higher than the top surface of the workbench, the driving cylinder is an air cylinder, the air cylinder comprises a cylinder body and a driving rod stretching relative to the cylinder body, the control system comprises a controller and an electromagnetic valve connected with the air cylinder through an air pipe, the controller controls the stretching state of the driving rod through controlling the electrifying or de-electrifying of the electromagnetic valve, a first magnetic sensor and a second magnetic sensor connected with the controller are arranged on the cylinder body, a piston connected with the driving rod is arranged in the cylinder body, the piston is provided with a magnetic ring, when the driving rod drives the cover plate to shield the avoidance hole, the magnetic ring triggers the first magnetic sensor, when the driving rod drives the cover plate to return to expose the avoidance hole, the magnetic ring triggers the second magnetic sensor, when the hydraulic press works, when a push rod at a certain position is required to be ejected, the control system controls the driving cylinder corresponding to the push rod to drive the cover plate to move so as to shield the avoidance hole, and after the hydraulic cushion cylinder drives the floating plate to ascend, the cover plate can prop against the lower end of the push rod and push the push rod to eject; when the ejector rod at a certain position is required to be ejected in running, the control system controls the driving cylinder corresponding to the ejector rod to drive the cover plate to move so as to expose the avoidance hole, and the hydraulic cushion cylinder drives the floating plate to move upwards, so that the lower end of the ejector rod can pass through the avoidance hole to prevent the floating plate from acting on the ejector rod, and the floating plate can not push the ejector rod upwards to move in the ascending process, so that the ejector rod at the position is ensured to be in a non-ejection state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810884081.4A CN108994137B (en) | 2018-08-06 | 2018-08-06 | Ejector rod switching device of hydraulic press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810884081.4A CN108994137B (en) | 2018-08-06 | 2018-08-06 | Ejector rod switching device of hydraulic press |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108994137A CN108994137A (en) | 2018-12-14 |
| CN108994137B true CN108994137B (en) | 2023-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810884081.4A Active CN108994137B (en) | 2018-08-06 | 2018-08-06 | Ejector rod switching device of hydraulic press |
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| Country | Link |
|---|---|
| CN (1) | CN108994137B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4202350A1 (en) * | 1992-01-29 | 1992-06-04 | Werkzeugmaschinen Gmbh Zeulenr | Ejector interchange device for multiple die press - has non-movable machine ejectors |
| CN101342798A (en) * | 2007-07-12 | 2009-01-14 | 天津市天锻压力机有限公司 | Support device for workpiece at arbitrary position of hydraulic mobile mechanism |
| CN102218805A (en) * | 2010-04-16 | 2011-10-19 | 鸿富锦精密工业（深圳）有限公司 | Ejection mechanism and mould with ejection mechanism |
| CN202088507U (en) * | 2011-04-18 | 2011-12-28 | 徐州压力机械有限公司 | Stretch-formed lifting hydraulic cushion of hydraulic press |
| CN202752469U (en) * | 2012-07-27 | 2013-02-27 | 北汽福田汽车股份有限公司 | Worktable capable of changing arrangement of ejector rods |
| CN103706704A (en) * | 2013-12-30 | 2014-04-09 | 安徽江淮汽车股份有限公司 | Punching switching mechanism in die |
| CN104148513A (en) * | 2014-08-27 | 2014-11-19 | 长城汽车股份有限公司 | Die and ejector rod ejecting device and method for die |
| CN104668345A (en) * | 2015-03-16 | 2015-06-03 | 安徽江淮汽车股份有限公司 | Stamping mold and male mold switching device thereof |
-
2018
- 2018-08-06 CN CN201810884081.4A patent/CN108994137B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4202350A1 (en) * | 1992-01-29 | 1992-06-04 | Werkzeugmaschinen Gmbh Zeulenr | Ejector interchange device for multiple die press - has non-movable machine ejectors |
| CN101342798A (en) * | 2007-07-12 | 2009-01-14 | 天津市天锻压力机有限公司 | Support device for workpiece at arbitrary position of hydraulic mobile mechanism |
| CN102218805A (en) * | 2010-04-16 | 2011-10-19 | 鸿富锦精密工业（深圳）有限公司 | Ejection mechanism and mould with ejection mechanism |
| CN202088507U (en) * | 2011-04-18 | 2011-12-28 | 徐州压力机械有限公司 | Stretch-formed lifting hydraulic cushion of hydraulic press |
| CN202752469U (en) * | 2012-07-27 | 2013-02-27 | 北汽福田汽车股份有限公司 | Worktable capable of changing arrangement of ejector rods |
| CN103706704A (en) * | 2013-12-30 | 2014-04-09 | 安徽江淮汽车股份有限公司 | Punching switching mechanism in die |
| CN104148513A (en) * | 2014-08-27 | 2014-11-19 | 长城汽车股份有限公司 | Die and ejector rod ejecting device and method for die |
| CN104668345A (en) * | 2015-03-16 | 2015-06-03 | 安徽江淮汽车股份有限公司 | Stamping mold and male mold switching device thereof |
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| Publication number | Publication date |
|---|---|
| CN108994137A (en) | 2018-12-14 |
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