CN112171163B - Positioning mechanism and welding jig - Google Patents
Positioning mechanism and welding jig Download PDFInfo
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- CN112171163B CN112171163B CN202011082454.XA CN202011082454A CN112171163B CN 112171163 B CN112171163 B CN 112171163B CN 202011082454 A CN202011082454 A CN 202011082454A CN 112171163 B CN112171163 B CN 112171163B
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- positioning
- extension bar
- limiting
- linear driving
- positioning mechanism
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/006—Vehicles
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a positioning mechanism and a welding fixture, wherein the positioning mechanism comprises an installation column, a linear driving structure, an extension bar, a positioning structure and a guide structure, wherein, the mounting post extends along a first direction, the fixed end of the linear driving device is arranged on the mounting post, the movable end of the linear driving device has a movable stroke along the first direction, the extension bar extends along the first direction, one end of the extension bar is arranged on the movable end, the positioning structure is arranged on the other end of the extension bar, the guiding structure is arranged between the positioning structure and the mounting post, the linear driving device is in driving connection with the positioning structure through the extension bar, the driving stroke of the linear driving structure is increased, the arrangement of a larger linear driving device is facilitated, thereby provide bigger drive power, adopt guide structure to make linear drive's expansion end can not rock after stretching out simultaneously, improved positioning mechanism's positioning accuracy.
Description
Technical Field
The invention relates to the technical field of automobile welding, in particular to a welding fixture of a positioning mechanism.
Background
The welding fixture is the most important auxiliary tool in the front of automobile welding, and the reasonable positioning and pressing mode of parts is the key point of the design of the welding fixture. The design of the welding fixture considers high-precision positioning of parts and also considers that a positioning mechanism meets the requirements of positioning space, convenience in operation and the like, for some welding assemblies with complex structures, such as welding of a front wheel package and a longitudinal beam of a cabin of an automobile, a fixed positioning mode is adopted, the parts cannot be taken after welding, the conventional telescopic positioning mechanism is generally connected to a pneumatic telescopic cylinder through a connecting block and limited by the welding space, the telescopic cylinder can only select a small model, so that the telescopic force of the cylinder is small, the cylinder is possibly clamped and cannot be stretched after welding, and after the cylinder extends out, a positioning pin at the tail end of a cylinder shaft is easy to generate large shaking amount to influence the positioning precision; and secondly, the cylinder is close to the positioning unit, and the welding space is occupied. Therefore, how to optimize the telescopic clamp structure of the complex welding assembly is a problem which needs to be solved urgently.
Disclosure of Invention
The invention mainly aims to provide a positioning mechanism and a welding fixture, and aims to solve the problem that the driving force of the existing telescopic positioning mechanism is insufficient due to space limitation.
To achieve the above object, the present invention provides a positioning mechanism, including:
the mounting column extends along a first direction;
the fixed end of the linear driving device is arranged on the mounting column, and the movable end of the linear driving device has a movable stroke along a first direction;
the extension bar extends along a first direction, and one end of the extension bar is arranged at the movable end;
the positioning structure is arranged at the other end of the extension bar; and the number of the first and second groups,
and the guide structure is arranged between the positioning structure and the mounting column.
Optionally, the linear driving device is a driving cylinder; and/or the presence of a gas in the gas,
the extension bar is detachably connected with the movable end.
Optionally, the positioning structure comprises:
the first connecting block is arranged at the other end of the extension bar;
the sliding seat is arranged on the first connecting block; and the number of the first and second groups,
the positioning seat is arranged on the sliding seat.
Optionally, the positioning socket includes:
the positioning seat body is arranged on the sliding seat;
the positioning pin is arranged on the positioning seat body; and the number of the first and second groups,
and the positioning rib strips are arranged on the positioning seat body.
Optionally, the first connecting block is detachably connected with the sliding seat.
Optionally, the guide structure includes a guide rail and a slider, which are slidably engaged with each other, the guide rail extends along a first direction, one of the guide rail and the slider is disposed on the slide seat, and the other is disposed on the mounting post.
Optionally, the number of the guide structures is two, and the guide structures are respectively arranged on two sides of the extension bar.
Optionally, a limiting structure is arranged between the sliding seat and the mounting column to limit the moving stroke of the sliding seat.
Optionally, the limit structure includes:
the two first limiting blocks are arranged on the mounting column at intervals along a first direction, and a limiting space is formed between the two first limiting blocks; and the number of the first and second groups,
the second limiting block is arranged on the sliding seat, and at least part of the second limiting block extends into the limiting space.
The invention also provides a welding fixture, which comprises a positioning mechanism, wherein the positioning mechanism comprises:
the mounting column extends along a first direction;
the fixed end of the linear driving device is arranged on the mounting column, and the movable end of the linear driving device has a movable stroke along a first direction;
the extension bar extends along a first direction, and one end of the extension bar is arranged at the movable end;
the positioning structure is arranged at the other end of the extension bar; and the number of the first and second groups,
and the guide structure is arranged between the positioning structure and the mounting column.
According to the technical scheme, the fixed end of the linear driving device is arranged on the mounting column, one end of the extension rod is arranged on the movable end, the positioning structure is arranged on the other end of the extension rod, the guide structure is arranged between the positioning structure and the mounting column, the linear driving device is in driving connection with the positioning structure through the extension rod, the driving stroke of the linear driving structure is increased, the arrangement of the larger linear driving device is facilitated, larger driving force is provided, the guide structure is adopted, the movable end of the linear driving device cannot shake after extending out, and the positioning accuracy of the positioning mechanism is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic perspective view of an embodiment of a positioning mechanism provided in the present invention;
FIG. 2 is a schematic perspective view of the positioning mechanism (partial structure) of FIG. 1;
FIG. 3 is an angled perspective view of the guide structure of FIG. 1;
FIG. 4 is a schematic perspective view of another angle of the guide structure of FIG. 1;
fig. 5 is a schematic perspective view of the limiting structure of fig. 1.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
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.
It should be noted that, if directional indication is involved in the embodiment of the present invention, the directional indication is only used for explaining the relative positional relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The existing telescopic positioning mechanism is limited by a welding space, a telescopic cylinder can only select a small model, the telescopic force of the cylinder is small, the cylinder is possibly clamped and can not stretch out and draw back after welding, and after the cylinder stretches out, a positioning pin at the tail end of a cylinder shaft is easy to generate large shaking amount, so that the positioning precision is influenced.
In view of this, the present invention provides a welding fixture, which includes a positioning mechanism, and any welding fixture including the positioning mechanism is within the scope of the present invention, wherein fig. 1 to 5 are schematic perspective views of the positioning structure provided by the present invention.
Referring to fig. 1, the positioning mechanism 100 includes a mounting post 1, a linear driving mechanism, an extension bar 3, a positioning mechanism 4, and a guiding mechanism 5, the mounting post 1 is extended along a first direction, the linear driving mechanism 2 is disposed on the mounting post 1 at a fixed end of the linear driving mechanism 2, a movable end of the linear driving mechanism 2 has a movable stroke along the first direction, the extension bar 3 is extended along the first direction, one end of the extension bar 3 is disposed on the movable end, the positioning mechanism 4 is disposed at the other end of the extension bar 3, and the guiding mechanism 5 is disposed between the positioning mechanism 4 and the mounting post 1.
In the technical scheme of the invention, the fixed end of the linear driving device 2 is arranged on the mounting post 1, one end of the extension bar 3 is arranged on the movable end, the positioning structure 4 is arranged on the other end of the extension bar 3, the guide structure 5 is arranged between the positioning structure 4 and the mounting post 1, the linear driving device 2 is in driving connection with the positioning structure 4 through the extension bar 3, the driving stroke of the linear driving structure is increased, the arrangement of the larger linear driving device 2 is facilitated, and therefore, larger driving force is provided, the guide structure 5 is adopted, the movable end of the linear driving cannot shake after extending out, and the positioning precision of the positioning mechanism 100 is improved.
The first direction may be any direction, such as up, down, left, right, and the like, and the present application is not limited thereto.
The linear driving device 2 is not limited to a specific structure form, such as an oil cylinder or an electric push rod, and specifically, in the present embodiment, the linear driving device 2 is a driving cylinder 21, so that the driving output force of the cylinder is large, and the structure is simple and easy to manufacture, which is beneficial to reducing the manufacturing cost of the positioning mechanism 100.
Further, in an embodiment, extension bar 3 with can dismantle the connection between the expansion end, so set up, adopt to dismantle the connection, convenient to detach linear drive device 2 is favorable to changing linear drive device 2 to obtain bigger drive power, can also be of course change the extension bar of different length, with the different stroke requirements of adaptation.
The detachable mounting structure may have various embodiments, for example, a bolt connection structure, a snap connection structure, or the like, and the present application is not limited thereto.
In order to drive the positioning structure 4 to move, please refer to fig. 2, the positioning structure 4 includes a first connecting block 41, a sliding seat 42 and a positioning seat 43, the first connecting block 41 is disposed at the other end of the extension bar 3, the sliding seat 42 is disposed on the first connecting block 41, and the positioning seat 43 is disposed on the sliding seat 42, so that the sliding seat 42 is drivingly connected to the linear driving device 2 through the first connecting block 41, so as to drive the positioning seat 43 to move along the first direction under the driving of the sliding seat 42.
Further, the positioning seat 43 includes a positioning seat body 431, a positioning pin 432 and a plurality of positioning ribs 433, the positioning seat body 431 is disposed on the sliding seat 42, the positioning pin 432 is disposed on the positioning seat body 431, the positioning ribs 433 are disposed on the positioning seat body 431, so that the positioning ribs 433 form a positioning surface, the positioning pin 432 is matched and positioned with a corresponding positioning hole on a workpiece to prevent the workpiece from sliding relative to the positioning seat 43, and the workpiece is fixed and positioned by the positioning mechanism 100 through a combined positioning mode of the positioning ribs 433 and the positioning pin 432.
In order to facilitate the loading and unloading extension bar 3, first connecting block 41 with can dismantle the connection between the slide 42, so set up, when changing different linear drive device 2, need correspond the adjustment extension bar 3 to adapt to different power needs, first connecting block 41 with slide 42 adopts can dismantle the connection, is favorable to the quick replacement extension bar 3.
The guide structure 5 may have various embodiments, such as a slide rail sliding groove structure, a slide rail sliding block structure, and the like, and specifically, referring to fig. 3 and fig. 4, the guide structure 5 includes a guide rail 51 and a sliding block 52 which are slidably engaged with each other, the guide rail 51 extends along a first direction, one of the guide rail 51 and the sliding block 52 is disposed on the sliding seat 42, and the other is disposed on the mounting post 1, so that the positioning seat 43 moves in a predetermined direction, and the shake of the positioning seat 43 is reduced, thereby ensuring the positioning accuracy of the positioning mechanism 100.
Further, guide structure 5 sets up two, and locates separately the both sides of extension bar 3, so set up, through setting up two guide structure 5 reduces the probability that positioning seat 43 rocked improves location structure 4's stability.
In order to control the movable stroke of the positioning structure 4, a limiting structure 6 is arranged between the sliding seat 42 and the mounting column 1 and used for limiting the movable stroke of the sliding seat 42, so that the limiting structure 6 is used for limiting the movable stroke of the sliding seat 42, and the sliding seat 42 is prevented from sliding out of the driving stroke of the linear driving structure, so that the linear driving device 2 is damaged.
The limiting structure 6 may have a plurality of embodiments, for example, a mutually-matched limiting concave-convex structure is disposed between the sliding seat 42 and the mounting post 1, specifically, in this application, please refer to fig. 5, the limiting structure 6 includes two first limiting blocks 61 and a second limiting block 62, the two first limiting blocks 61 are disposed on the mounting post 1 at intervals along a first direction, a limiting space is formed between the two first limiting blocks 61, the second limiting block 62 is disposed on the sliding seat 42 and at least partially extends into the limiting space, and thus the first limiting block 61 and the second limiting block interfere with each other to limit the moving stroke of the second limiting block 62, so as to limit the moving stroke of the sliding seat 42.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents made by the contents of the present specification and drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. A positioning mechanism, comprising:
the mounting column extends along a first direction;
the fixed end of the linear driving device is arranged on the mounting column, and the movable end of the linear driving device has a movable stroke along a first direction;
the extension bar extends along a first direction, and one end of the extension bar is arranged at the movable end;
the positioning structure is arranged at the other end of the extension bar; and the number of the first and second groups,
the guide structure is arranged between the positioning structure and the mounting column;
wherein, the location structure includes:
the first connecting block is arranged at the other end of the extension bar;
the sliding seat is arranged on the first connecting block; and the number of the first and second groups,
the positioning seat is arranged on the sliding seat;
the linear driving device is a driving cylinder; and/or the presence of a gas in the gas,
the extension bar is detachably connected with the movable end;
the positioning seat includes:
the positioning seat body is arranged on the sliding seat;
the positioning pin is arranged on the positioning seat body; and the number of the first and second groups,
the positioning ribs are arranged on the positioning seat body;
the first connecting block is detachably connected with the sliding seat.
2. The positioning mechanism according to claim 1, wherein the guiding structure comprises a guiding rail and a sliding block slidably engaged with each other, the guiding rail extending along the first direction, one of the guiding rail and the sliding block being disposed on the sliding base, and the other one of the guiding rail and the sliding block being disposed on the mounting post.
3. The positioning mechanism as set forth in claim 2 wherein said guide structure is provided in two and is disposed on each side of said extension bar.
4. The positioning mechanism according to claim 1, wherein a limiting structure is provided between the carriage and the mounting post for limiting the moving stroke of the carriage.
5. The positioning mechanism of claim 4, wherein the limiting structure comprises:
the two first limiting blocks are arranged on the mounting column at intervals along a first direction, and a limiting space is formed between the two first limiting blocks; and the number of the first and second groups,
the second limiting block is arranged on the sliding seat, and at least part of the second limiting block extends into the limiting space.
6. A welding jig characterized by comprising the positioning mechanism according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011082454.XA CN112171163B (en) | 2020-10-10 | 2020-10-10 | Positioning mechanism and welding jig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011082454.XA CN112171163B (en) | 2020-10-10 | 2020-10-10 | Positioning mechanism and welding jig |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112171163A CN112171163A (en) | 2021-01-05 |
| CN112171163B true CN112171163B (en) | 2022-02-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011082454.XA Active CN112171163B (en) | 2020-10-10 | 2020-10-10 | Positioning mechanism and welding jig |
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| Country | Link |
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| CN (1) | CN112171163B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114346566B (en) * | 2021-12-31 | 2023-03-24 | 广州明珞自动化工业有限公司 | Welding jig and welding equipment |
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|---|---|---|---|---|
| CN203610878U (en) * | 2013-11-21 | 2014-05-28 | 山东迈赫自动化装备股份有限公司 | Double-guide-rail welding mould jig locating mechanism |
| CN104128735A (en) * | 2013-12-21 | 2014-11-05 | 柳州万众汽车部件有限公司 | Automatic fixing bracket clamping device |
| CN204639516U (en) * | 2015-05-27 | 2015-09-16 | 安徽江淮汽车股份有限公司 | A kind of weld jig adjustable supports structure |
| CN205363113U (en) * | 2016-01-27 | 2016-07-06 | 上海大众联合发展车身配件有限公司 | A orthoscopic positioning fixture subassembly for auto parts manufacturing |
| CN108453462A (en) * | 2018-05-15 | 2018-08-28 | 上海众冠智能设备有限公司 | A kind of linear drive apparatus for mobile automobile parts welding fixture |
| KR101971957B1 (en) * | 2018-03-06 | 2019-04-24 | (주)디웰코 | Arc Stud Welding Gun Using Servo Motor |
| CN209503215U (en) * | 2018-12-18 | 2019-10-18 | 宁波宏诺智能装备有限公司 | A kind of fitting device being able to achieve the spot welding of automobile guide rail side and the weldering of bracket salient point |
-
2020
- 2020-10-10 CN CN202011082454.XA patent/CN112171163B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203610878U (en) * | 2013-11-21 | 2014-05-28 | 山东迈赫自动化装备股份有限公司 | Double-guide-rail welding mould jig locating mechanism |
| CN104128735A (en) * | 2013-12-21 | 2014-11-05 | 柳州万众汽车部件有限公司 | Automatic fixing bracket clamping device |
| CN204639516U (en) * | 2015-05-27 | 2015-09-16 | 安徽江淮汽车股份有限公司 | A kind of weld jig adjustable supports structure |
| CN205363113U (en) * | 2016-01-27 | 2016-07-06 | 上海大众联合发展车身配件有限公司 | A orthoscopic positioning fixture subassembly for auto parts manufacturing |
| KR101971957B1 (en) * | 2018-03-06 | 2019-04-24 | (주)디웰코 | Arc Stud Welding Gun Using Servo Motor |
| CN108453462A (en) * | 2018-05-15 | 2018-08-28 | 上海众冠智能设备有限公司 | A kind of linear drive apparatus for mobile automobile parts welding fixture |
| CN209503215U (en) * | 2018-12-18 | 2019-10-18 | 宁波宏诺智能装备有限公司 | A kind of fitting device being able to achieve the spot welding of automobile guide rail side and the weldering of bracket salient point |
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| Publication number | Publication date |
|---|---|
| CN112171163A (en) | 2021-01-05 |
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