CN114310811A - Workpiece turnover mechanism - Google Patents
Workpiece turnover mechanism Download PDFInfo
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- CN114310811A CN114310811A CN202111544335.6A CN202111544335A CN114310811A CN 114310811 A CN114310811 A CN 114310811A CN 202111544335 A CN202111544335 A CN 202111544335A CN 114310811 A CN114310811 A CN 114310811A
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- connecting rod
- gear
- sliding block
- turnover
- fixedly connected
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- 230000007306 turnover Effects 0.000 title claims abstract description 59
- 230000007246 mechanism Effects 0.000 title claims abstract description 30
- 230000033001 locomotion Effects 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000003028 elevating effect Effects 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 230000009471 action Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000001963 growth medium Substances 0.000 description 3
- 238000003754 machining Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010355 oscillation 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; a pair of gear pairs is rotationally connected on the sliding block, each gear pair comprises a driving gear and a moving 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 together with the connecting rod, and a rotating shaft of the driven gear is fixedly connected with the overturning worktable; the crank is driven to swing to realize the lifting motion of the sliding block through the swing of the output shaft of the gear rack type swing air cylinder; when the connecting rod drives the sliding block to lift up and down, the driving gear 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 to drive the overturning worktable to lift and overturn simultaneously; the problem of among the upset process workstation and ground interference to and the lift of workstation and the 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 turnover mechanism.
Background
In the field of mechanical automated manufacturing, many workpieces are processed or treated on both sides during the machining process. After one side is finished, the workpiece is turned 180 degrees along the horizontal shaft to process or treat the other side, so that an automatic turning mechanism is needed. Since the height of the table top is ergonomically designed to facilitate the machining or manipulation of the workpiece, this requires that the height of the table remains unchanged after the table is flipped. However, when the size of the worktable is large, if the worktable rotates at a fixed point, the turnover mechanism is easy to collide with the lower support or the ground during the turnover process due to insufficient height space. At present, a patent of a flexible manufacturing system feeding and discharging turnover mechanism is disclosed by a patent of bin adults and the like, and the problem of difficulty in vertical clamping of plate-shaped parts of an existing loading station is solved for a turnover oil cylinder rotating on a fixed support. However, the height of the rotation center of the turnover mechanism cannot be changed for the fixed support, and the workbench may interfere with the lower support or the ground. Yao Ling et al disclose a material tilting mechanism's patent, through clamping mechanism clamp tight culture medium, rise clamping mechanism and tilting mechanism by elevating system again, then tilting mechanism is 180 degrees with clamping mechanism and culture medium upset, realizes the upset of culture medium. But the lifting and turning actions cannot be performed simultaneously and two power sources are required. Therefore, an automatic turnover mechanism is needed, which can improve the rotation center of the workbench during turnover, solve the interference phenomenon between the workbench and the ground, complete the lifting and turnover actions of the workpiece at the same time, shorten the process beat and improve the production efficiency.
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 insufficient height space of the traditional automatic overturning mechanism.
In order to achieve the purpose, the invention provides the following technical scheme: a workpiece turnover mechanism comprises a turnover worktable, two groups of rack and pinion type swing cylinders, a crank and a sliding block, wherein the two groups of rack and pinion type swing cylinders are arranged on the side surface of the turnover worktable and are used for providing power;
the output shaft of the rack and pinion type swing cylinder is fixedly connected with one end of a crank, and the other end of the crank is rotatably connected with one end of a connecting rod through a connecting rod shaft; a pair of gear pairs is rotationally connected on the sliding block, each gear pair comprises a driving gear and a moving 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 together with the connecting rod, and a rotating shaft of the driven gear is fixedly connected with the overturning worktable; the crank is driven to swing to realize the lifting motion of the sliding block through the swing of the output shaft of the gear rack type swing air cylinder; the side surface of the turnover worktable is vertically and slidably connected with the linear guide rail through the guide rail 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, the driven gear rotates along with the driving gear while lifting along with the sliding block to drive the turnover worktable to lift and turn simultaneously, and the lifting motion of the turnover worktable in the vertical direction is ensured by means of mutual sliding between the linear guide rail and the guide rail sliding block;
preferably, the overturning principle of the overturning workbench is as follows: length of crank is l1The length of the connecting rod is l2The tooth number Z of the driving gear and the tooth number Z of the driven gear; when the turnover worktable is in a horizontal state, the height from the rotation center of the turnover worktable to the center of an output shaft of the gear-rack type swing cylinder is H, the lifting height of the turnover worktable is H, the swing angle of the connecting rod is theta, and the final rotation angle of the connecting rod is 90 degrees; when the rack and pinion type swing cylinder is in a horizontal state for a small initial driving force,/1And l2Are mutually vertical; by calculating
l1＝hsinθ l2＝hcosθH＝h(sinθ+cosθ-1)
then the connecting rod pendulum is selected by selecting the central height hAngle theta, and tooth ratio of driving gear to driven gear
The lifting of the rotary center at different heights is realized while the working table is turned over by 180 degrees.
Compared with the prior art, the invention has the following beneficial effects:
the structure is simple, and the operation is convenient. The worktable can simultaneously realize the overturning of the table top and the lifting of the rotary 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 90-degree overturning state. Then the center of the workbench gets across the highest point and begins to descend, and when the workbench reaches the original height, the workbench finishes the 180-degree overturning action. The problem of among the upset process workstation and ground interference to and the lift of workstation and the upset can not go on simultaneously is solved.
The device is driven by the air cylinder to realize the lifting and overturning of the workbench. The adjustable height of the rotary center can be realized by designing different structural sizes of the crank block, and the adjustable height of the rotary center can be matched with other fixtures to meet the requirements of various working tables on the turning height. The device can also adopt any driving form of an air cylinder, a hydraulic cylinder, a motor and the like.
Drawings
FIG. 1 is a schematic structural view of a workpiece turnover mechanism of the present invention;
FIG. 2 is a schematic view of a linkage structure of a workpiece turnover mechanism according to the present invention;
FIG. 3 is a schematic view of a slide block of a guide rail of a workpiece turnover mechanism according to the present invention;
FIG. 4 is a schematic view of the structure calculation of a turnover mechanism of a workpiece turnover mechanism according to the present invention;
FIG. 5 is a schematic view of a 90-degree turnover state of a workpiece turnover mechanism according to the present invention;
fig. 6 is a schematic view of a 180-degree turnover state of a workpiece turnover mechanism according to the present invention.
In the figure, 1 is a turnover workbench, 2 is a rack and pinion type swing cylinder, 3 is a crank, 4 is a connecting rod shaft, 5 is a connecting rod, 6 is a pin shaft, 7 is a driving gear, 8 is a driven gear, 9 is a workbench rotating shaft, 10 is a connecting plate, 11 is a guide rail sliding block, 12 is a linear guide rail, and 13 is a sliding block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution: a workpiece turnover mechanism comprises a turnover worktable 1, two groups of rack and pinion type swing cylinders 2 which are arranged on the side surface of the turnover worktable 1 and used for providing power, a crank 3 used for power transmission and a slide block 13;
an output shaft of the rack and pinion type swing cylinder 2 is fixedly connected with one end of a crank 3, and the other end of the crank 3 is rotatably connected with one end of a connecting rod 5 through a connecting rod shaft 4; a pair of gear pairs is rotationally connected on the sliding block 13, each gear pair comprises a driving gear 7 and a moving gear 8, and the connecting rod 5 is rotationally 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 together with the connecting rod 5, and a rotating shaft of the driven gear 8 is fixedly connected with the overturning worktable 1; the crank 3 is driven to swing to realize the lifting motion of the sliding block 13 through the swing of the output shaft of the gear rack type swing cylinder 2; the side surface of the turnover worktable 1 is vertically and slidably connected with a linear guide rail 12 through a guide rail sliding block 11, when a connecting rod 5 drives a sliding block 13 to lift up and down, a driving gear 7 rotates along with the connecting rod 5 while lifting, a driven gear 8 rotates along with the driving gear 7 while lifting along with the sliding block 13, so that the turnover worktable 1 is driven to lift up and down and turn over simultaneously, and the lifting motion of the turnover worktable 1 in the vertical direction is ensured by means of mutual sliding between the linear guide rail 12 and the guide rail sliding block 11;
further, the overturning principle of the overturning worktable 1 is as follows: the crank 3 has a length l1The length of the connecting rod 5 is l2Number of teeth Z of drive gear 71Number of teeth Z of driven gear 82(ii) a When the turnover worktable 1 is in a horizontal state, the height from the rotation center of the turnover worktable 1 to the center of the output shaft of the gear-rack type swing cylinder 2 is H, the lifting height of the turnover worktable 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; when the rack and pinion type oscillation cylinder 2 is in a horizontal state for a small initial driving force,/1And l2Are mutually vertical; by calculating
l1＝hsinθ l1＝hcosθ
H＝h(sinθ+cosθ-1)
by selecting the center height h, the swing angle theta of the connecting rod 5 and the gear ratio of the driving gear 7 and the driven gear 8
The lifting of the rotary center at different heights is realized while the working table is turned over by 180 degrees.
Example (b): the connecting rod 5 is connected with a sliding block 13 through a pin shaft 6, and a pair of external 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 worktable 1 and play a role in supporting the turnover worktable 1.
The rack and pinion type swing cylinder 2 as a power source swings to drive the crank 3 to swing, the connecting rod 5 and the pin shaft 6 drive the slide block 13 to slide up and down along the linear guide rail 12, and meanwhile, the slide 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 overturn through the workbench revolving shaft 9 and the connecting plate 10. When the rotation center of the workbench moves to the highest point, the workbench is in a state of turning over by 90 degrees, as shown in fig. 5. And then, when the rotation center of the turnover worktable 1 crosses the highest point and is lowered to the original height, the turnover movement of the worktable 1 is completed, as shown in fig. 6. The turnover mechanism enables the workbench to be in a stable state through self-locking of the power device.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments 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. A workpiece turnover mechanism is characterized by comprising a turnover worktable (1), two groups of rack and pinion type swing cylinders (2) which are arranged on the side surface of the turnover worktable (1) and used for providing power, a crank (3) used for power transmission and a slide block (13);
an output shaft of the rack and pinion type swing cylinder (2) is fixedly connected with one end of a crank (3), and the other end of the crank (3) is rotatably connected with one end of a connecting rod (5) through a connecting rod shaft (4); a pair of gear pairs is rotationally connected on the sliding block (13), each gear pair comprises a driving gear (7) and a moving gear (8), and the connecting rod (5) is rotationally 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 together with the connecting rod (5), and a rotating shaft of the driven gear (8) is fixedly connected with the overturning worktable (1); the crank (3) is driven to swing to realize the lifting motion of the sliding block (13) through the swing of the output shaft of the gear and rack type swing cylinder (2); upset workstation (1) side is through guide rail slider (11) and the vertical sliding connection of linear guide (12), when connecting rod (5) drive slider (13) oscilaltion, also rotate along with connecting rod (5) when driving gear (7) go up and down, driven gear (8) rotate along with driving gear (7) when going up and down along with slider (13), it goes up and down and the upset to drive when realizing upset workstation (1), rely on the slip of each other between linear guide (12) and guide rail slider (11), guarantee upset workstation (1) at the elevating movement of vertical direction.
2. A workpiece-inverting mechanism as claimed in claim 1, characterised in that the principle of inversion of the inversion table (1) is: the length of the crank (3) is l1The length of the connecting rod (5) is l2Number of teeth Z of driving gear (7)1Number of teeth Z of the driven gear (8)2(ii) a When the turnover worktable (1) is in a horizontal state, the height from the rotation center of the turnover worktable (1) to the center of an output shaft of the gear-rack type swing cylinder (2) is H, the rising height of the turnover worktable (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; when the rack and pinion type swing cylinder (2) is in a horizontal state for the purpose of reducing the initial driving force,/1And l2Are mutually vertical; by calculating
l1＝hsinθ l2＝hcosθ
H＝h(sinθ+cosθ-1)
by selecting the center height h, the swing angle theta of the connecting rod (5) and the gear ratio of the driving gear (7) and the driven gear (8)
The lifting of the rotary center at different heights is realized while the workbench (1) is turned over by 180 degrees.
3. The workpiece turnover mechanism as claimed in claim 1, wherein the driven gear 8 is fixedly connected with a table rotating shaft (9) of the turnover table (1), the table rotating shaft (9) is fixedly connected with a connecting plate (10), and the connecting plate (10) is fixedly connected with the turnover table (1); the sliding block (13) is fixedly connected with the guide rail sliding block (11) so that the sliding block (13) can slide 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114310811A true CN114310811A (en) | 2022-04-12 |
| CN114310811B CN114310811B (en) | 2024-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111544335.6A Active CN114310811B (en) | 2021-12-16 | 2021-12-16 | Workpiece overturning mechanism |
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| Country | Link |
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| CN (1) | CN114310811B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117344124A (en) * | 2023-10-17 | 2024-01-05 | 江苏瑞格高合金材料有限公司 | Quick quenching equipment for high-speed steel processing |
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-
2021
- 2021-12-16 CN CN202111544335.6A patent/CN114310811B/en active Active
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| JP2009227434A (en) * | 2008-03-25 | 2009-10-08 | Dainippon Screen Mfg Co Ltd | Table lifter and substrate treatment device |
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| CN112937403A (en) * | 2021-04-01 | 2021-06-11 | 义乌市涵物贸易有限公司 | Lifting device for assisting heavy object to go up bus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117344124A (en) * | 2023-10-17 | 2024-01-05 | 江苏瑞格高合金材料有限公司 | Quick quenching equipment for high-speed steel processing |
| 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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| Publication number | Publication date |
|---|---|
| CN114310811B (en) | 2024-02-27 |
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