CN112693145A - Lower ejection mechanism for press machine - Google Patents
Lower ejection mechanism for press machine Download PDFInfo
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- CN112693145A CN112693145A CN202011568503.0A CN202011568503A CN112693145A CN 112693145 A CN112693145 A CN 112693145A CN 202011568503 A CN202011568503 A CN 202011568503A CN 112693145 A CN112693145 A CN 112693145A
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- 230000004075 alteration Effects 0.000 description 1
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Abstract
The invention discloses a lower ejection mechanism for a press machine, which comprises a rack, a rotating shaft, a driving mechanism, a plurality of ejection plates and a plurality of adjusting mechanisms, wherein the rotating shaft is rotatably arranged on the rack; one end of the rotating shaft is provided with a first swing rod; the driving mechanism is arranged on the frame; one end of each ejector plate is hinged to the rack, and each ejector plate is provided with an ejector rod; each adjusting mechanism comprises an adjusting screw rod, an adjusting threaded sleeve, a first lever, a first connecting rod and a second connecting rod, the adjusting screw rod is rotatably arranged on the first swing rod, the adjusting threaded sleeve is in threaded connection with the adjusting screw rod, the middle of the first lever is hinged to the first swing rod, two ends of the first connecting rod are respectively hinged to one end of the adjusting threaded sleeve and one end of the first lever, and two ends of the second connecting rod are respectively hinged to the other end of the first lever and the other end of the ejector plate. The adjusting screw rods rotate for different numbers of turns, so that the adjusting screw sleeves reach different vertical heights, and different ejector rods conform to corresponding ejection heights.
Description
Technical Field
The invention relates to the technical field of mechanical equipment, in particular to a lower ejection mechanism for a press machine.
Background
When the press machine is used for multi-station work, the required lower ejection height of the lower ejection is different due to different working procedures of each station, and the adjustment of the existing lower ejection mechanism is complex.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a lower ejection mechanism for a press, which is simple in height adjustment.
The lower ejection mechanism for the press machine comprises a frame, a rotating shaft, a driving mechanism, a plurality of ejection plates and a plurality of adjusting mechanisms, wherein the rotating shaft is rotatably arranged on the frame; one end of the rotating shaft is provided with a first swing rod; the driving mechanism is arranged on the rack and used for driving the rotating shaft to rotate; one end of each ejector plate is hinged to the rack, and each ejector plate is provided with an ejector rod; a plurality of adjustment mechanism, every adjustment mechanism include adjusting screw, adjust swivel nut, first lever, first connecting rod and second connecting rod, adjusting screw rotationally locates on the first pendulum rod, adjust the swivel nut with adjusting screw threaded connection, the middle part of first lever articulate in on the first pendulum rod, the both ends of first connecting rod respectively with adjust the swivel nut with the one end of first lever is articulated, the both ends of second connecting rod respectively with the other end of first lever with the other end of kicking plate articulates.
The lower ejection mechanism for the press machine provided by the embodiment of the invention has the following technical effects: the adjusting screws are rotated for different turns to enable the adjusting threaded sleeves to reach different vertical heights, and then different ejector rods conform to corresponding ejection heights; the invention has the advantages of simple structure, convenient adjustment and the like.
According to some embodiments of the present invention, the driving mechanism includes a cam, a second lever, an upper and lower pull rod, and a second swing rod, the cam is rotatably mounted on the frame, a middle portion of the second lever is rotatably mounted on the frame, the cam is always in contact with one end of the second lever during a rotation motion, the other end of the rotating shaft is provided with the second swing rod, and two ends of the upper and lower pull rod are respectively connected with the other end of the second lever and the second swing rod.
According to some embodiments of the invention, the upper and lower tie rods are telescopic rods.
According to some embodiments of the present invention, the upper and lower pull rods include a first pull rod, a second pull rod, and a locking sleeve, two ends of the locking sleeve are respectively in threaded connection with one end of the first pull rod and one end of the second pull rod, and threads at two ends of the locking sleeve are in opposite directions.
According to some embodiments of the invention, the locking sleeve is provided with a through groove, and the first pull rod and the second pull rod are provided with screws at positions corresponding to the through groove.
According to some embodiments of the invention, the ejector pin is sleeved with a spring.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural view of a lower ejector mechanism for a press from a certain perspective according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a lower ejection mechanism for a press from another perspective;
FIG. 3 is a schematic structural diagram of the connection of the adjusting mechanism with the rotating shaft and the ejector plate;
fig. 4 is an enlarged view of fig. 1 at a.
Reference numerals: the device comprises a rack 100, a rotating shaft 200, a first swing link 210, a driving mechanism 300, a cam 310, a second lever 320, an upper pull rod 330, a lower pull rod 330, a first pull rod 331, a second pull rod 332, a locking sleeve 333, a through groove 334, a screw 335, a second swing link 340, a material ejecting plate 400, a top rod 410, a spring 411, an adjusting mechanism 500, an adjusting screw 510, an adjusting screw sleeve 520, a first lever 530, a first connecting rod 540 and a second connecting rod 550.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, a plurality of means is two or more, and the terms greater than, less than, more than, etc. are understood to exclude the essential numbers, and the terms greater than, less than, etc. are understood to include the essential numbers. It should be understood that the description relating to the orientation, such as the upper, lower, left, right and middle designations of the orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. This is done solely for the purpose of facilitating the description of the invention and simplifying the description without indicating or implying that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation and therefore should not be construed as limiting the invention.
In the description of the present invention, unless otherwise specifically limited, installation and connection terms should be construed broadly, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in consideration of the technical details.
Referring to fig. 1, 2 and 3, a lower ejector mechanism for a press according to an embodiment of the present invention includes a frame 100, a rotary shaft 200, a driving mechanism 300, a plurality of ejector plates 400 and a plurality of adjusting mechanisms 500, the rotary shaft 200 being rotatably mounted on the frame 100; one end of the rotating shaft 200 is provided with a first swing link 210; the driving mechanism 300 is mounted on the frame 100 and is used for driving the rotating shaft 200 to rotate; a plurality of ejector plates 400, one ends of the plurality of ejector plates 400 being hinged to the frame 100, each ejector plate 400 being provided with an ejector pin 410; the adjusting mechanisms 500 are arranged in a mode that each adjusting mechanism 500 comprises an adjusting screw 510, an adjusting screw sleeve 520, a first lever 530, a first connecting rod 540 and a second connecting rod 550, the adjusting screw 510 is rotatably arranged on the first swing rod 210, the adjusting screw sleeve 520 is in threaded connection with the adjusting screw 510, the middle of the first lever 530 is hinged to the first swing rod 210, two ends of the first connecting rod 540 are respectively hinged to the adjusting screw sleeve 520 and one end of the first lever 530, and two ends of the second connecting rod 550 are respectively hinged to the other end of the first lever 530 and the other end of the ejector plate 400.
The lower ejection mechanism is used for ejecting a workpiece punched by a press machine, the driving mechanism 300 drives the rotating shaft 200 to rotate, the rotating shaft 200 drives the adjusting mechanism 500 to swing, the adjusting mechanism 500 drives the ejector plate 400 to swing up and down, and the ejector plate 400 drives the ejector rod 410 to move up and down to eject the workpiece.
As shown in fig. 2 and 3, when the top rod 410 needs to move upward, the driving mechanism 300 drives the rotating shaft 200 to rotate counterclockwise, the rotating shaft 200 further drives the first oscillating bar 210 to rotate counterclockwise, the first lever 530 pulls the second connecting rod 550 to rotate upward to the left and pulls the ejector plate 400 to rotate around the frame 100 at the right end, and the first lever 530 makes the ejector plate 400 swing upward to drive the top rod 410 to move upward; when the ejector rod 410 needs to move downwards, the driving mechanism 300 drives the rotating shaft 200 to rotate clockwise, the rotating shaft 200 further drives the first oscillating bar 210 to rotate clockwise, the first lever 530 pulls the second connecting rod 550 to rotate downwards and leftwards and pulls the ejector plate 400 to rotate around the frame 100 at the right end, and the first lever 530 enables the ejector plate 400 to swing downwards so as to drive the ejector rod 410 to move downwards; when the ejection height of the ejector rod 410 needs to be increased, the adjusting screw 510 is rotated, the adjusting screw 520 is driven by screw thread fit to move downwards so as to drive the first lever 530 to rotate a certain angle in the counterclockwise direction, so that the ejector plate 400 swings upwards by a certain angle under the pulling of the first lever 530 and the second connecting rod 550, and the ejection height of the ejector rod 410 is increased; when the ejection height of the ejector rod 410 needs to be reduced, the adjusting screw 510 is rotated, the adjusting screw 520 is driven by screw thread fit to move upwards so as to drive the first lever 530 to rotate a certain angle clockwise, so that the ejector plate 400 swings downwards by a certain angle under the pushing of the first lever 530 and the second connecting rod 550, and the ejection height of the ejector rod 410 is reduced; when different ejection heights need to be adjusted, only different numbers of turns need to be rotated, and the ejection height of the ejector rod 410 is further controlled; specifically, the adjusting screw 510 may be fixed by a nut, and when the ejection height does not need to be adjusted, the adjusting screw 510 is locked by tightening the nut to prevent the adjusting screw from rotating. Different numbers of turns are rotated to a plurality of adjusting screw rods 510, so that a plurality of adjusting screw sleeves 520 reach different vertical heights, and then different ejector rods 410 meet corresponding ejection heights, and therefore the mechanism can be adjusted according to actual working conditions, the final movement result of each station meets the working condition requirements, and the processing difficulty of parts matched with each other is reduced, and the adjusting is convenient and simple in structure.
In some embodiments of the present invention, as shown in fig. 1, the driving mechanism 300 includes a cam 310, a second lever 320, an upper and lower pull rod 330 and a second swing rod 340, the cam 310 is rotatably mounted on the frame 100, a middle portion of the second lever 320 is rotatably mounted on the frame 100, the cam 310 is always in contact with one end of the second lever 320 during the rotation movement, the other end of the rotating shaft 200 is provided with the second swing rod 340, and two ends of the upper and lower pull rod 330 are respectively connected with the other end of the second lever 320 and hinged to the second swing rod 340. For example, the cam 310 is fixed to the crankshaft through a coupling, and rotates with the crankshaft, the middle portion of the second lever 320 is fixed to the upper portion of the rack 100 through a fixed pin, one end of the second lever 320 is provided with a roller, the roller is in close contact with a curved surface of the cam 310 at the beginning and end, the second lever 320 makes an arc-shaped reciprocating motion under the driving of the cam 310, the other end of the second lever 320 pulls the up-down pull rod 330 to move, and the up-down pull rod 330 pulls the second swing link 340 to move and then transfer the movement, so that the rotating shaft 200 makes a reciprocating rotation movement. Specifically, a U-shaped connecting member is disposed between the upper and lower pulling rods 330 and the second swinging rod 340. The cam 310 and the coupler are meshed and fixed through uniformly distributed teeth on the circumference of the plane, the structure of the cam is easy to install, and the angle can be adjusted, so that the ejector rod 410 can work in cooperation with actual working conditions to achieve the best use effect.
In a further embodiment of the present invention, the upper and lower tie rods 330 are telescopic rods. So that the length of the upper and lower pull rods 330 can be adjusted to adjust the highest position of the end surface of the second lever 320 during normal operation.
In a further embodiment of the present invention, the upper and lower tie rods 330 include a first tie rod 331, a second tie rod 332 and a locking sleeve 333, two ends of the locking sleeve 333 are respectively in threaded connection with one end of the first tie rod 331 and one end of the second tie rod 332, and threads at two ends of the locking sleeve 333 are in opposite directions. Specifically, one end of the locking sleeve 333 is a left-hand thread, the other end of the locking sleeve 333 is a right-hand thread, and the threads of one end of the first pull rod 331 and the threads of one end of the second pull rod 332 are respectively matched with the threads of the two ends of the locking sleeve 333; when the locking device is used, the locking sleeve 333 is rotated, the locking sleeve 333 only rotates and does not move up and down, and the thread parts of the first pull rod 331 and the second pull rod 332 are simultaneously screwed into the middle direction of the locking sleeve 333 or screwed out towards the two ends of the locking sleeve 333, so that the length of the upper pull rod 330 and the lower pull rod 330 can be adjusted.
In a further embodiment of the present invention, the locking sleeve 333 is provided with a through slot 334, and the first and second tie rods 331 and 332 are provided with screws 335 at positions corresponding to the through slot 334. When the length of the upper and lower pull rods 330 is adjusted to be long, the screws 335 of the first pull rod 331 and the second pull rod 332 are gradually abutted against two ends of the through groove 334, and after the screws are abutted against the two ends, the upper and lower pull rods 330 reach the maximum length; during actual use, the adjustment amount can be controlled according to the size of the actual adjustment through groove 334; the screw 335 is arranged to limit the upper and lower pull rods 330 from being unscrewed to the maximum adjustment amount and then being unscrewed, so that the normal work of the mechanism is ensured.
In some embodiments of the present invention, as shown in fig. 2 and 3, the top rod 410 is sleeved with a spring 411. So that the ejector rod 410 is reset under the assistance of the spring 411 after the ejector rod 410 finishes the ejection work, and the mechanism automation is improved.
In the description herein, references to the description of "some embodiments" or "what is conceivable" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011568503.0A CN112693145A (en) | 2020-12-25 | 2020-12-25 | Lower ejection mechanism for press machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011568503.0A CN112693145A (en) | 2020-12-25 | 2020-12-25 | Lower ejection mechanism for press machine |
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| Publication Number | Publication Date |
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| CN112693145A true CN112693145A (en) | 2021-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011568503.0A Pending CN112693145A (en) | 2020-12-25 | 2020-12-25 | Lower ejection mechanism for press machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113579097A (en) * | 2021-07-23 | 2021-11-02 | 浙江友信机械工业有限公司 | Workpiece ejection device flexible to adjust |
| CN114147462A (en) * | 2021-11-27 | 2022-03-08 | 杭州职业技术学院 | Adjustable impact-free thin bearing press-fitting equipment |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3429741A1 (en) * | 1983-11-28 | 1985-06-05 | VEB Kombinat Umformtechnik "Herbert Warnke" Erfurt, DDR 5010 Erfurt | Table ejector for presses with a crank mechanism |
| CN201186332Y (en) * | 2008-04-29 | 2009-01-28 | 东莞市金苗五金机械有限公司 | Multi-station bolt cold heading machine |
| CN202894196U (en) * | 2012-10-26 | 2013-04-24 | 常州市立威刀具有限公司 | Mechanical automatic downward piece-ejecting device |
| CN202910145U (en) * | 2012-10-10 | 2013-05-01 | 江苏通达动力科技股份有限公司 | Whole pre-pressing device of motor punching sheet |
| CN104148570A (en) * | 2014-07-30 | 2014-11-19 | 昆山新威精密五金有限公司 | Independent male die ejection mechanism for multi-station cold header |
| CN104226768A (en) * | 2014-09-09 | 2014-12-24 | 宁波市科斯顿精工机械有限公司 | Connecting rod punch press |
| CN104275361A (en) * | 2014-10-10 | 2015-01-14 | 江苏中兴西田数控科技有限公司 | Multi-station lower ejection device for cold extruding |
| CN106180524A (en) * | 2016-08-30 | 2016-12-07 | 江苏中兴西田数控科技有限公司 | Warm forging punch press bottom ejection device |
| CN214927307U (en) * | 2020-12-25 | 2021-11-30 | 广东锻压机床厂有限公司 | Lower ejection mechanism for press machine |
-
2020
- 2020-12-25 CN CN202011568503.0A patent/CN112693145A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3429741A1 (en) * | 1983-11-28 | 1985-06-05 | VEB Kombinat Umformtechnik "Herbert Warnke" Erfurt, DDR 5010 Erfurt | Table ejector for presses with a crank mechanism |
| CN201186332Y (en) * | 2008-04-29 | 2009-01-28 | 东莞市金苗五金机械有限公司 | Multi-station bolt cold heading machine |
| CN202910145U (en) * | 2012-10-10 | 2013-05-01 | 江苏通达动力科技股份有限公司 | Whole pre-pressing device of motor punching sheet |
| CN202894196U (en) * | 2012-10-26 | 2013-04-24 | 常州市立威刀具有限公司 | Mechanical automatic downward piece-ejecting device |
| CN104148570A (en) * | 2014-07-30 | 2014-11-19 | 昆山新威精密五金有限公司 | Independent male die ejection mechanism for multi-station cold header |
| CN104226768A (en) * | 2014-09-09 | 2014-12-24 | 宁波市科斯顿精工机械有限公司 | Connecting rod punch press |
| CN104275361A (en) * | 2014-10-10 | 2015-01-14 | 江苏中兴西田数控科技有限公司 | Multi-station lower ejection device for cold extruding |
| CN106180524A (en) * | 2016-08-30 | 2016-12-07 | 江苏中兴西田数控科技有限公司 | Warm forging punch press bottom ejection device |
| CN214927307U (en) * | 2020-12-25 | 2021-11-30 | 广东锻压机床厂有限公司 | Lower ejection mechanism for press machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113579097A (en) * | 2021-07-23 | 2021-11-02 | 浙江友信机械工业有限公司 | Workpiece ejection device flexible to adjust |
| CN114147462A (en) * | 2021-11-27 | 2022-03-08 | 杭州职业技术学院 | Adjustable impact-free thin bearing press-fitting equipment |
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