CN114310811B - Workpiece overturning mechanism - Google Patents
Workpiece overturning mechanism Download PDFInfo
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- CN114310811B CN114310811B CN202111544335.6A CN202111544335A CN114310811B CN 114310811 B CN114310811 B CN 114310811B CN 202111544335 A CN202111544335 A CN 202111544335A CN 114310811 B CN114310811 B CN 114310811B
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- turnover
- sliding block
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- 230000007246 mechanism Effects 0.000 title claims abstract description 34
- 230000007306 turnover Effects 0.000 claims abstract description 71
- 230000033001 locomotion Effects 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000009471 action Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000001963 growth medium Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 241000276425 Xiphophorus maculatus Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The invention discloses a workpiece turnover mechanism.A gear rack type swing cylinder output shaft is fixedly connected with one end of a crank, and the other end of the crank is rotationally connected with one end of a connecting rod through a connecting rod shaft; the sliding block is rotationally connected with a pair of gear pairs, each gear pair comprises a driving gear and a movable gear, and the connecting rod is connected with the sliding block through a pin shaft; the center of the driving gear is fixedly connected with the connecting rod and swings along with the connecting rod, and the rotating shaft of the driven gear is fixedly connected with the overturning workbench; the crank is driven to swing through the swing of the output shaft of the gear rack type swing cylinder to realize the lifting movement of the sliding block; when the connecting rod drives the sliding block to lift up and down, the driving gear also rotates along with the connecting rod while lifting, and the driven gear rotates along with the driving gear while lifting along with the sliding block, so that the simultaneous lifting and turning of the turning workbench are realized; the problem of workstation and ground interference in the upset in-process is solved to and the lift of workstation and upset can not go on simultaneously is solved.
Description
Technical Field
The invention relates to the technical field of automatic production, in particular to a workpiece overturning mechanism.
Background
In the field of mechanical automation, many workpieces are subjected to double-sided machining or processing during machining. When one of the surfaces is finished, the workpiece is turned 180 degrees along the horizontal axis to process or treat the other surface, and an automatic turning mechanism is needed. Because the height of the workbench surface is required to be in accordance with the ergonomics so as to facilitate the processing or operation of the workpiece, the height of the workbench after being overturned is required to be kept unchanged. However, when the size of the workbench is large, if fixed-point rotation is adopted, the turnover mechanism is insufficient in height space, and the workbench is easy to collide with the lower support or the ground in the turnover process. Currently, zhoucheng et al disclose a flexible manufacturing system feeding and discharging turnover mechanism's patent, and the problem of current loading station's vertical clamping difficulty of platy part is solved to the upset hydro-cylinder that rotates on the fixed bolster. However, the height of the rotation center cannot be changed for the turnover mechanism of the fixed support, and the workbench is likely to interfere with the lower support or the ground. Mao Yaling et al disclose a material turnover mechanism, clamp the culture medium through the clamping mechanism, then rise clamping mechanism and turnover mechanism by elevating system, then turnover mechanism turns over clamping mechanism and culture medium 180 degrees, realizes the upset of culture medium. However, the lifting and turning actions cannot be performed simultaneously, and two power sources are required. Therefore, an automatic turnover mechanism is needed, the rotation center of a workbench can be improved during turnover, the interference phenomenon between the workbench and the ground is solved, the lifting and turnover actions of a workpiece are finished at the same time, the process beats are shortened, and the production efficiency is improved.
Disclosure of Invention
The invention solves the problem that the workbench collides with the lower support or the ground in the overturning process due to the insufficient height space of the existing automatic overturning mechanism.
In order to achieve the above purpose, the present invention provides the following technical solutions: a workpiece turnover mechanism comprises a turnover workbench, two groups of gear rack type swing cylinders, a crank and a sliding block, wherein the gear rack type swing cylinders are arranged on the side surface of the turnover workbench and used for providing power;
the gear rack type swing cylinder output shaft is fixedly connected with one end of a crank, and the other end of the crank is rotationally connected with one end of a connecting rod through a connecting rod shaft; the sliding block is rotationally connected with a pair of gear pairs, each gear pair comprises a driving gear and a movable gear, and the connecting rod is rotationally connected with the sliding block through a pin shaft; the center of the driving gear is fixedly connected with the connecting rod and swings along with the connecting rod, and the rotating shaft of the driven gear is fixedly connected with the overturning workbench; the crank is driven to swing through the swing of the output shaft of the gear rack type swing cylinder to realize the lifting movement of the sliding block; the side surface of the turnover workbench is vertically and slidably connected with the linear guide rail through the guide rail sliding block, when the sliding block is driven by the connecting rod to lift up and down, the driving gear lifts up and down and rotates along with the connecting rod, the driven gear lifts up and down along with the sliding block and rotates along with the driving gear, the simultaneous lifting and turnover of the turnover workbench are driven to be realized, and the lifting movement of the turnover workbench in the vertical direction is ensured by virtue of the mutual sliding between the linear guide rail and the guide rail sliding block;
preferably, the turnover principle of the turnover workbench is as follows: length of crank is l 1 The length of the connecting rod is l 2 The number of teeth Z of the driving gear and the number of teeth Z of the driven gear; when the turnover workbench is in a horizontal state, the rotation center of the turnover workbench is H away from the center of the output shaft of the rack-and-pinion type swing cylinder, the lifting height of the turnover workbench is H, the swing angle of the connecting rod is theta, and the final rotation angle of the connecting rod is 90 degrees; in order to make the initial driving force smaller, l is when the rack and pinion type swing cylinder is in a horizontal state 1 And l 2 Are perpendicular to each other; through calculation
Simplifying and obtaining: />
l 1 ＝hsinθ l 2 ＝hcosθH＝h(sinθ+cosθ-1)
By selecting the center height h, the link pivot angle theta, and the gear ratio of the driving gear to the driven gearThe lifting of the rotation centers at different heights is realized while the 180-degree overturning of the workbench is ensured.
Compared with the prior art, the invention has the following beneficial effects:
the structure is simple and the operation is convenient. The workbench can realize the overturning of the table top and the lifting of the rotation center under the action of a single driving device. When the rotation center of the workbench reaches the highest point, the workbench is in a turnover 90-degree state. And then the center of the workbench starts to descend beyond the highest point, and when the workbench reaches the original height, the workbench finishes the 180-degree overturning action. The problem of workstation and ground interference in the upset in-process is solved to and the lift of workstation and upset can not go on simultaneously is solved.
The device adopts the cylinder to drive, and realizes the lifting and the turning of the workbench. The adjustable crank block can be designed to realize adjustment of the height of the rotation center by different structural dimensions, and can be matched with other clamps for use so as to meet the requirements of overturning heights of various working tables. The device can also adopt any driving mode such as an air cylinder, a hydraulic cylinder, a motor and the like.
Drawings
FIG. 1 is a schematic diagram of a turnover mechanism of a workpiece turnover mechanism according to the present invention;
FIG. 2 is a schematic view of a turnover mechanism link structure of a workpiece turnover mechanism according to the present invention;
FIG. 3 is a schematic view of a turnover mechanism guide rail slider of a workpiece turnover mechanism of the present invention;
FIG. 4 is a schematic diagram showing the structural calculation of a turnover mechanism of a workpiece turnover mechanism according to the present invention;
FIG. 5 is a 90 degree flip state schematic of a work piece flip mechanism of the present invention;
fig. 6 is a schematic view of a 180 degree turning state of a turning mechanism of a workpiece turning mechanism according to the present invention.
In the figure, a turnover workbench 1, a gear rack type swing cylinder 3, a crank, a connecting rod shaft 4, a connecting rod 5, a pin shaft 6, a driving gear 7, a driven gear 8, a workbench rotating shaft 9, a connecting plate 10, a guide rail sliding block 11, a linear guide rail 12 and a sliding block 13.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-6, the present invention provides a technical solution: the workpiece turnover mechanism comprises a turnover workbench 1, two groups of gear rack type swing cylinders 2 which are arranged on the side surface of the turnover workbench 1 and used for providing power, a crank 3 used for power transmission and a sliding block 13;
the output shaft of the gear rack type swing cylinder 2 is fixedly connected with one end of a crank 3, and the other end of the crank 3 is rotationally connected with one end of a connecting rod 5 through a connecting rod shaft 4; a pair of gear pairs are rotatably connected to the sliding block 13, each gear pair comprises a driving gear 7 and a movable gear 8, and the connecting rod 5 is rotatably connected with the sliding block 13 through a pin shaft 6; the center of the driving gear 7 is fixedly connected with the connecting rod 5 and swings along with the connecting rod 5, and the rotating shaft of the driven gear 8 is fixedly connected with the turnover workbench 1; the crank 3 is driven to swing through the swing of the output shaft of the gear rack type swing cylinder 2 so as to realize the lifting movement of the sliding block 13; the side surface of the turnover workbench 1 is vertically and slidably connected with the linear guide rail 12 through the guide rail slide block 11, when the connecting rod 5 drives the slide block 13 to lift up and down, the driving gear 7 lifts up and down and rotates along with the connecting rod 5, the driven gear 8 lifts up and down along with the slide block 13 and rotates along with the driving gear 7, the turnover workbench 1 is driven to lift up and down and turn over at the same time, and the lifting motion of the turnover workbench 1 in the vertical direction is ensured by virtue of the mutual sliding between the linear guide rail 12 and the guide rail slide block 11;
further, the turnover principle of the turnover workbench 1 is as follows: length of crank 3 is l 1 The length of the connecting rod 5 is l 2 The number of teeth Z of the driving gear 7 1 The number of teeth Z of the driven gear 8 2 The method comprises the steps of carrying out a first treatment on the surface of the When the turnover workbench 1 is in a horizontal state, the rotation center of the turnover workbench 1 is H away from the center of the output shaft of the rack and pinion type swing cylinder 2, the lifting height of the turnover workbench 1 is H, the swing angle of the connecting rod 5 is theta, and the final rotation angle of the connecting rod 5 is 90 degrees; in order to make the initial driving force smaller, l is when the rack and pinion oscillating cylinder 2 is in a horizontal state 1 And l 2 Are perpendicular to each other; through calculation
Simplifying and obtaining: />
l 1 ＝hsinθ l 1 ＝hcosθ
H＝h(sinθ+cosθ-1)
By selecting the center height h, the pivot angle θ of the connecting rod 5, and the gear ratio of the driving gear 7 to the driven gear 8The lifting of the rotation centers at different heights is realized while the 180-degree overturning of the workbench is ensured.
Examples: the connecting rod 5 is connected with the sliding block 13 through the pin shaft 6, and a pair of external meshing gear pairs, namely a driving gear 7 and a driven gear 8, are arranged on the sliding block 13. The driving gear 7 is fixedly connected with the connecting rod 5, the driven gear 8 is fixedly connected with a workbench rotating shaft 9 of the turnover workbench 1, the workbench rotating shaft 9 is fixedly connected with a connecting plate 10, and the connecting plate 10 is fixedly connected with the turnover workbench 1. The slide block 13 is fixedly connected with the guide rail slide block 11, so that the slide block 13 slides up and down along the linear guide rail 12. The turnover mechanisms are symmetrically arranged on two sides of the turnover workbench 1 and play a supporting role on the turnover workbench 1.
The rack and pinion type swing cylinder 2 serving as a power source swings to drive the crank 3 to swing, the connecting rod 5 and the pin shaft 6 drive the sliding block 13 to slide up and down along the linear guide rail 12, and meanwhile, the sliding block 13 drives the workbench rotating shaft 9 to lift, so that the lifting motion of the turnover workbench 1 is realized. The connecting rod 5 swings to drive the driving gear 7 to rotate, the driving gear 7 drives the driven gear 8 to rotate, and the workbench 1 is driven to turn over through the workbench rotating shaft 9 and the connecting plate 10. When the rotation center of the workbench moves to the highest point, the workbench is in a turnover 90-degree state, as shown in fig. 5. After that, when the rotation center of the turnover table 1 is lowered to the original height beyond the highest point, the turnover movement of the table 1 is completed, as shown in fig. 6. The turnover mechanism is self-locked through the power device, so that the workbench is in a stable state.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The workpiece turnover mechanism is characterized by comprising a turnover workbench (1), two groups of gear rack type swing cylinders (2) which are arranged on the side surface of the turnover workbench (1) and used for providing power, a crank (3) used for power transmission and a sliding block (13);
the output shaft of the gear rack type swing cylinder (2) is fixedly connected with one end of a crank (3), and the other end of the crank (3) is rotationally connected with one end of a connecting rod (5) through a connecting rod shaft (4); a pair of gear pairs are rotatably connected to the sliding block (13), each gear pair comprises a driving gear (7) and a driven gear (8), and the connecting rod (5) is rotatably connected with the sliding block (13) through a pin shaft (6); the center of the driving gear (7) is fixedly connected with the connecting rod (5) and swings along with the connecting rod (5), and the rotating shaft of the driven gear (8) is fixedly connected with the turnover workbench (1); the crank (3) is driven to swing through the swing of the output shaft of the gear rack type swing cylinder (2) to realize the lifting movement of the sliding block (13); the side of the turnover workbench (1) is vertically and slidably connected with the linear guide rail (12) through the guide rail sliding block (11), when the connecting rod (5) drives the sliding block (13) to lift up and down, the driving gear (7) also rotates along with the connecting rod (5) when lifting, the driven gear (8) rotates along with the driving gear (7) when lifting along with the sliding block (13), the lifting and turnover of the turnover workbench (1) are driven to be realized, and the lifting movement of the turnover workbench (1) in the vertical direction is ensured by virtue of the mutual sliding between the linear guide rail (12) and the guide rail sliding block (11).
2. A workpiece tilting mechanism according to claim 1, characterized in that the tilting table (1) is of the tilting principle: length of crank (3) is l 1 The length of the connecting rod (5) is l 2 The number of teeth Z of the driving gear (7) 1 The number of teeth Z of the driven gear (8) 2 The method comprises the steps of carrying out a first treatment on the surface of the When the turnover workbench (1) is in a horizontal state, the rotation center of the turnover workbench (1) is at a distance H from the center of an output shaft of the rack and pinion type swing cylinder (2), the lifting height of the turnover workbench (1) is H, the swing angle of the connecting rod (5) is theta, and the final rotation angle of the connecting rod (5) is 90 degrees;in order to make the initial driving force smaller, l is when the rack-and-pinion oscillating cylinder (2) is in a horizontal state 1 And l 2 Perpendicular to each other.
3. The workpiece turnover mechanism according to claim 1, characterized in that the driven gear 8 is fixedly connected with a workbench rotating shaft (9) of the turnover workbench (1), the workbench rotating shaft (9) is fixedly connected with a connecting plate (10), and the connecting plate (10) is fixedly connected with the turnover workbench (1); the slide block (13) is fixedly connected with the guide rail slide block (11) so that the slide block (13) slides up and down along the linear guide rail (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111544335.6A CN114310811B (en) | 2021-12-16 | 2021-12-16 | Workpiece overturning mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111544335.6A CN114310811B (en) | 2021-12-16 | 2021-12-16 | Workpiece overturning mechanism |
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| Publication Number | Publication Date |
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| CN114310811A CN114310811A (en) | 2022-04-12 |
| CN114310811B true CN114310811B (en) | 2024-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111544335.6A Active CN114310811B (en) | 2021-12-16 | 2021-12-16 | Workpiece overturning mechanism |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117344124B (en) * | 2023-10-17 | 2024-05-28 | 铜陵景昌钢制品有限公司 | Quick quenching equipment for high-speed steel processing |
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|---|---|---|---|---|
| JPS62171853A (en) * | 1986-01-22 | 1987-07-28 | Komatsu Ltd | Turnover device |
| JPH0484232U (en) * | 1990-11-29 | 1992-07-22 | ||
| JP2009227434A (en) * | 2008-03-25 | 2009-10-08 | Dainippon Screen Mfg Co Ltd | Table lifter and substrate treatment device |
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| CN107125633A (en) * | 2017-07-19 | 2017-09-05 | 许昌学院 | A kind of efficient cooked egg is shelled shell pulverizer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180236652A1 (en) * | 2017-02-23 | 2018-08-23 | Alternative Engineering, Inc. | Manual hand crank with optional power enhancement |
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2021
- 2021-12-16 CN CN202111544335.6A patent/CN114310811B/en active Active
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|---|---|---|---|---|
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| JPH0484232U (en) * | 1990-11-29 | 1992-07-22 | ||
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| CN107125633A (en) * | 2017-07-19 | 2017-09-05 | 许昌学院 | A kind of efficient cooked egg is shelled shell pulverizer |
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