CN113146122B - Automatic telescopic locking pressing head for welding fixture - Google Patents
Automatic telescopic locking pressing head for welding fixture Download PDFInfo
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- CN113146122B CN113146122B CN202110211064.6A CN202110211064A CN113146122B CN 113146122 B CN113146122 B CN 113146122B CN 202110211064 A CN202110211064 A CN 202110211064A CN 113146122 B CN113146122 B CN 113146122B
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- locking
- shell
- pressing
- button
- guide rail
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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
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automatic Assembly (AREA)
Abstract
The utility model provides an automatic flexible locking pressure head for welding jig, includes that shell and top-down install button, reset spring, progressive self-locking mechanism and the compress tightly the subassembly in the vertical through-hole of shell in proper order, reset spring's upper end top is on the button, lower extreme and shell fixed connection, button and shell sliding contact and by the protruding edge spacing to the inside extension of vertical through-hole at shell top, progressive self-locking mechanism's operating end is connected with the button, it includes depression bar and pressure spring to compress tightly the subassembly, the upper end and the progressive self-locking mechanism of depression bar are connected, and the lower extreme is relative with the work piece that needs compress tightly, the lower extreme and the shell of pressure spring are connected, and the upper end top is on the step on the depression bar. The invention utilizes the progressive self-locking mechanism to control the displacement of the pressure head, can effectively prevent the workpiece from deforming in the welding process and improve the assembly precision of the workpiece. The invention has high reliability, convenient and quick operation, and can improve the welding efficiency of workpieces and reduce the labor intensity of workers.
Description
Technical Field
The invention relates to a device used on a mechanical welding fixture and used for compressing a welding component, belonging to the technical field of welding.
Background
Welding is a manufacturing process and technology for joining metals or other thermoplastic materials in a heating, high-temperature or high-pressure manner, and is widely applied to the industries of aerospace, ships, automobiles, electronics, semiconductors and the like. The workpiece is easy to deform in the welding process, so that the assembly precision of the workpiece is influenced, the qualification rate of products is reduced, and the welding fixture can effectively inhibit the deformation of the workpiece, so that the design of the reliable and efficient welding fixture has important significance for improving the quality of the products.
However, the existing welding fixture often has the phenomenon that the press head surface is not completely contacted with or is over contacted with the workpiece plate surface in the using process, field personnel are needed to debug at the moment, the number of fixtures at each station of some products is more than ten, the total number of dozens or even hundreds of pressing points in a workshop need to be adjusted, and the welding efficiency of workpieces is seriously influenced. In order to solve the above problems, some engineers have proposed to press a workpiece with a pressing head shown in fig. 1 (a), which maintains the pressing head surface in contact with the surface of the workpiece plate by the elastic action of a pressing spring, and have disadvantages that reliability is poor, and the pressing spring is easily out of service after a period of use, so that the pressing head is not generally used alone in a mass production tool. Fig. 1 (b) shows another improved pressing head, the pressing head surface is ensured to be in contact with the surface of the workpiece plate in a manner of adjusting the gasket, actual mass production tools are more adopted, and the pressing head has the defects that the process of adjusting the gasket in the early stage is time-consuming and labor-consuming, the welding efficiency of the workpiece is influenced, and the labor intensity of workers is increased.
In summary, the existing welding fixture pressing head has the disadvantages of poor reliability, low working efficiency and the like, so that improvement is needed.
Disclosure of Invention
The invention aims to provide an automatic telescopic locking pressing head for a welding fixture, which has high reliability and is convenient to operate, aiming at overcoming the defects of the prior art, so that the welding efficiency of workpieces is improved, and the labor intensity of workers is reduced.
The problems of the invention are solved by the following technical scheme:
the utility model provides an automatic flexible locking collet for welding jig, includes that shell and top-down install button, reset spring, progressive self-locking mechanism and the subassembly that compresses tightly in the vertical through-hole of shell in proper order, reset spring's upper end top is on the button, lower extreme and shell fixed connection, button and shell sliding contact and by the protruding edge spacing to the inside extension of vertical through-hole at shell top, progressive self-locking mechanism's operating end is connected with the button, it includes depression bar and pressure spring to compress tightly the subassembly, the upper end and the progressive self-locking mechanism of depression bar are connected, and the lower extreme is relative with the work piece that needs compress tightly, on the pressure spring suit depression bar, the lower extreme and the shell of pressure spring are connected, and the upper end top is on the step on the depression bar.
The automatic flexible locking pressure head for welding jig, progressive self-locking mechanism includes cyclic annular guide rail, push rod and locking piece, the guide rail is fixed in the vertical through-hole of shell and coaxial with vertical through-hole, and the bottom surface of guide rail is equipped with cascaded draw-in groove, the push rod loose cover is in the centre bore of guide rail, and the lower extreme both sides of push rod are equipped with wedge protruding portion down, the locking piece includes annular tapered end and cylindric lock pushing piece, the lower extreme and the depression bar of cylindric lock pushing piece meet, and the upper end is equipped with the wave undulation incision that corresponds with the wedge protruding portion of push rod lower extreme all around, cyclic annular tapered end cover is in the outside of lock pushing piece and with lock pushing piece fixed connection, the upper portion of tapered end be equipped with the corresponding wedge structure of cascaded draw-in groove on the guide rail bottom surface.
According to the automatic telescopic locking pressing head for the welding fixture, the pressing block corresponding to the workpiece needing to be pressed is fixed at the lower end of the pressing rod.
The automatic telescopic locking pressing head for the welding fixture is characterized in that the pressing rod is connected with the pressing block through threads.
Above-mentioned an automatic flexible locking compact head for welding jig, the outside of guide rail is equipped with annular boss, in the draw-in groove on the shell inner wall was inlayed to annular boss.
Above-mentioned an automatic flexible locking compact head for welding jig, reset spring's lower extreme and guide rail fixed connection.
Above-mentioned an automatic flexible locking collet for welding jig, the lower surface middle part of button is equipped with the draw-in groove with the upper end assorted of push rod.
Above-mentioned an automatic flexible locking collet for welding jig, the up end middle part of depression bar is equipped with the lower extreme assorted draw-in groove that pushes away the piece with the lock.
The invention controls the displacement of the pressure head by using the progressive self-locking mechanism, can effectively prevent the workpiece from deforming in the welding process, improves the assembly precision of the workpiece and ensures the qualification rate of products. The invention has the advantages of high reliability, difficult failure, convenient and quick operation, improved welding efficiency of workpieces and reduced labor intensity of workers.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 (a) and 1 (b) are respectively schematic structural diagrams of two existing compaction heads;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a cross-sectional view of the present invention;
FIG. 4 (a) is an external view of the housing; FIG. 4 (b) is a cross-sectional view of the housing;
FIGS. 5 (a) and 5 (b) are two views of the button, respectively;
FIG. 6 is a schematic structural view of a return spring;
FIG. 7 is a schematic structural view of the push rod;
fig. 8 is (a) and fig. 8 (b) are two views of the guide rail, respectively;
FIG. 9 is a view of the latch member in two views (a) and 9 (b), respectively;
FIG. 10 is a schematic view of the lock cylinder;
FIG. 11 is a schematic view of the structure of the lock pusher;
FIGS. 12 (a) and 12 (b) are two views of a compression bar, respectively;
FIG. 13 is a schematic view of the compression spring;
FIG. 14 is a schematic view of the structure of a compact.
The reference numbers in the figures are: 1. the device comprises a button, 2, a shell, 3, a push rod, 4, a reset spring, 5, a guide rail, 6, a locking piece, 6-1, a lock head, 6-2, a locking pushing piece, 7, a pressure rod, 8, a pressure spring, 9, a pressing block, 10, a compression spring, 11 and a gasket.
Detailed Description
Aiming at the defects of the existing clamp pressing head in actual use, the invention designs a novel pressing head, which mainly comprises a shell 2, a driving part, a progressive self-locking mechanism and a pressing assembly, wherein the structure of the novel pressing head is shown in a schematic structural diagram (a three-dimensional structural diagram) in figure 2, and the structure of the novel pressing head is shown in a semi-sectional diagram in figure 3. Wherein, the driving part mainly comprises a button 1 and a return spring 4; the progressive self-locking mechanism mainly comprises a push rod 3, a guide rail 5 and a locking piece 6; the compressing assembly mainly comprises a compression bar 7, a compression spring 8 and a pressing block 9. The pressing head has the function of automatic locking and is very convenient to operate.
The structure of the housing 2 is shown in fig. 4 (a) and 4 (b), and it is a cylindrical structure, and the vertical through hole is a stepped hole for installing the driving part and the progressive self-locking mechanism.
The structure of the driving part is shown in fig. 5 and 6, fig. 5 is the structure of the push button 1, and fig. 6 is the structure of the return spring 4. The driving part mainly plays a role in pushing the progressive self-locking mechanism. Button 1 installs in the vertical through hole of tube-shape shell 2 and by the anticreep protruding edge spacing to the inside extension of vertical through hole at shell 2 top, the lower surface middle part of button 1 and 3 in close contact with of push rod of progressive self-locking mechanism, the outer fringe of button 1 and the vertical through hole inner wall sliding connection of shell 2, reset spring 4 cover is outside in progressive self-locking mechanism's push rod 3, reset spring 4's upper end top is in the outer fringe of button 1, the lower extreme and shell 2 fixed connection (be connected with the fixed guide 5 of push rod 3). In the use process, the button 1 can be directly pressed to move up and down in the vertical through hole of the shell 2 and drive the progressive self-locking mechanism to move, and when the pressing is stopped, the button 1 is restored to the original position (the top of the shell 2) under the action of the return spring 4.
Fig. 7-11 show a progressive self-locking mechanism, which is a core part of the present invention, wherein the upper part of the push rod 3 is in close contact with the button 1, and the lower part of the push rod is provided with two wedge-shaped protrusions for pushing the lock pushing member 6-2 downwards and rotating the lock pushing member 6-2 and the lock head 6-1 by a certain angle, and the push rod 3 passes through a vertical through hole of the guide rail 5 and is in sliding contact with the guide rail 5, i.e. the push rod 3 can move up and down in the guide rail 5. The extension part on the upper surface of the guide rail 5 is fixed in a clamping groove on the inner wall of the shell 2 to prevent the extension part from moving, the bottom surface is provided with a step-type clamping groove for clamping the lock head 6-1 to prevent the lock head from moving, and meanwhile, different parts of the step-type clamping groove correspond to different locking positions, so that the pressing block 9 of the pressing assembly has different axial strokes. The upper part of the locking piece 6 is in close contact with the guide rail 5, specifically, the wedge-shaped structures extending upwards from two sides of the locking head 6-1 are in contact with the stepped clamping groove in the bottom surface of the guide rail 5, and the locking head 6-1 can rotate and move along with the locking pushing piece 6-2, so that the wedge-shaped structures on the locking head 6-1 are propped against different parts of the stepped clamping groove and positioned in the stepped clamping groove, and the lower pressure rod 7 is prevented from moving upwards, thereby ensuring that the extending pressure rod 7 can keep a certain extending length without changing. The lock pushing piece 6-2 is fixedly connected with the lock head 6-1, the wavy notch on the upper portion of the lock pushing piece 6-2 is in transmission contact with the wedge-shaped protruding portion on the lower portion of the push rod 3, namely when the push rod 3 is pressed downwards, the two wedge-shaped protruding portions are in contact with the wavy notch and drive the locking piece 6 to integrally rotate, the wedge-shaped structure on the lock head 6-1 is driven to move downwards until the wedge-shaped structure falls into the next locking portion of the stepped clamping groove and is locked, when the wedge-shaped structure extending out of the lock head 6-1 is abutted to the stepped clamping groove, one-time expansion and contraction is completed, the operation is circulated downwards until the locking piece 6 rotates for a circle, the operation is performed at the back, and the expansion and contraction operation mode is circulated again.
Fig. 12-14 show the pressing assembly part, and two clamping grooves are arranged on the upper part of the vertical through hole of the shell 2, one is used for limiting the travel of the button 1 and preventing the button from being separated from the shell under the elastic action of a spring, and the other one is used for clamping the guide rail 5 and completely fixing the guide rail 5. The compression bar 7 is positioned in a vertical through hole of the shell 2 and can slide along the axial direction of the shell 2, the upper end of the compression bar is contacted with the locking piece 6, and the contact mode is as follows: the upper end of the pressure rod 7 is sleeved on the lock pushing piece 6-2, the lower end of the pressure rod is in threaded connection with the pressing block 9, the progressive self-locking mechanism can drive the pressure rod 7 to move downwards, and the pressure rod 7 drives the pressing block 9 to move downwards and reach a specified position. The pressure spring 8 is sleeved on the pressure rod 7, the lower end of the pressure spring is in contact with a step on the inner wall of the shell 2, the upper end of the pressure spring is in contact with a step on the pressure rod 7, and the pressure spring mainly acts to enable the downward moving pressing assembly to move upwards under the no-load condition and stably clamp the locking piece 6 in the stepped clamping groove of the guide rail 5. The upper end of the pressing block 9 is in threaded connection with the pressing rod 7, and the lower end of the pressing block is in contact with the surface of a workpiece to be pressed.
The working mode of the invention is as follows: when pressing button 1, button 1 drives push rod 3 and moves down, push rod 3 promotes locking piece 6 and moves in shell 2, locking piece 6 also drives depression bar 7 and moves down simultaneously, same pressure head 9 then moves down, when locking piece 6 moves down to the certain distance, locking piece 6 takes place the rotation under the effect of the cascaded draw-in groove of 3 lower part wedge-shaped protruding portions of push rod and guide rail 5, under the elastic action of pressure spring 8, with the next locking position of tapered end 6-1 top in cascaded draw-in groove, the removal is ended, corresponding pressure tight subassembly has taken place decurrent removal, and button 1 resumes original position under reset spring 4's elastic action. And when the button 1 is pressed once, the pressing assembly displaces once until the locking piece 6 rotates for a circle, the pressing assembly returns to the original position, the operation is carried out again, and the movement is repeated.
The invention has the advantages that:
1. the stroke of the pressure head 9 is adjustable in steps, the operation is reliable, and the failure is not easy to occur;
2. convenient and fast operation, time saving and labor saving.
Claims (7)
1. An automatic telescopic locking pressing head for a welding fixture is characterized by comprising a shell (2), and a button (1), a reset spring (4), a progressive self-locking mechanism and a pressing assembly which are sequentially arranged in a vertical through hole of the shell (2) from top to bottom, wherein the upper end of the reset spring (4) is abutted to the button (1), the lower end of the reset spring is fixedly connected with the shell (2), the button (1) is in sliding contact with the shell (2) and limited by a convex edge extending towards the inside of the vertical through hole at the top of the shell (2), the operating end of the progressive self-locking mechanism is connected with the button (1), the pressing assembly comprises a pressing rod (7) and a pressure spring (8), the upper end of the pressing rod (7) is connected with the progressive self-locking mechanism, the lower end of the pressing rod is opposite to a workpiece to be pressed, the pressure spring (8) is sleeved on the pressing rod (7), the lower end of the pressure spring (8) is connected with the shell (2), and the upper end of the pressing rod is abutted to a step on the pressing rod (7);
the progressive self-locking mechanism comprises an annular guide rail (5), a push rod (3) and a locking piece (6), wherein the guide rail (5) is fixed in a vertical through hole of a shell (2) and is coaxial with the vertical through hole, the bottom surface of the guide rail (5) is provided with a stepped clamping groove, the push rod (3) is loosely sleeved in a center hole of the guide rail (5), two sides of the lower end of the push rod (3) are provided with downward wedge-shaped protrusions, the locking piece (6) comprises an annular lock head (6-1) and a cylindrical locking and pushing piece (6-2), the lower end of the cylindrical locking and pushing piece (6-2) is connected with a pressure rod (7), the periphery of the upper end of the cylindrical locking and pushing piece is provided with a wavy notch corresponding to the wedge-shaped protrusion at the lower end of the push rod (3), the annular lock head (6-1) is sleeved outside the locking and fixedly connected with the locking and pushing piece (6-2), and the upper part of the lock head (6-1) is provided with a wedge-shaped structure corresponding to the stepped clamping groove in the bottom surface of the guide rail (5).
2. The automatic telescopic locking and pressing head for the welding fixture as claimed in claim 1, characterized in that a pressing block (9) corresponding to a workpiece to be pressed is fixed at the lower end of the pressing rod (7).
3. The automatic telescopic locking and pressing head for the welding fixture as claimed in claim 2, wherein the pressure rod (7) is connected with the pressing block (9) through threads.
4. The automatic telescopic locking and pressing head for the welding fixture as claimed in claim 3, wherein the outer side of the guide rail (5) is provided with an annular boss, and the annular boss is embedded into a clamping groove on the inner wall of the shell (2).
5. The automatic telescopic locking and pressing head for the welding fixture as claimed in claim 4, wherein the lower end of the return spring (4) is fixedly connected with the guide rail (5).
6. The automatic telescopic locking and pressing head for the welding fixture as claimed in claim 5, wherein a clamping groove matched with the upper end of the push rod (3) is formed in the middle of the lower surface of the button (1).
7. The automatic telescopic locking and pressing head for the welding fixture as claimed in claim 6, wherein the middle of the upper end surface of the pressure lever (7) is provided with a clamping groove matched with the lower end of the locking and pushing piece (6-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110211064.6A CN113146122B (en) | 2021-02-25 | 2021-02-25 | Automatic telescopic locking pressing head for welding fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110211064.6A CN113146122B (en) | 2021-02-25 | 2021-02-25 | Automatic telescopic locking pressing head for welding fixture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113146122A CN113146122A (en) | 2021-07-23 |
| CN113146122B true CN113146122B (en) | 2022-11-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202110211064.6A Active CN113146122B (en) | 2021-02-25 | 2021-02-25 | Automatic telescopic locking pressing head for welding fixture |
Country Status (1)
| Country | Link |
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| CN (1) | CN113146122B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0252694A1 (en) * | 1986-07-07 | 1988-01-13 | Parker Pen (Benelux) B.V. | Writing instrument |
| CN203263942U (en) * | 2013-04-16 | 2013-11-06 | 福建省百仕韦医用高分子股份有限公司 | Flow stopping clip device |
| CN203795962U (en) * | 2014-04-22 | 2014-08-27 | 嘉兴职业技术学院 | Ratchet-type invisible handle on invisible door |
| CN205734692U (en) * | 2016-06-23 | 2016-11-30 | 无锡德斯凯动力科技有限公司 | A kind of connecting rod self-locking precision hands pulls forcing press |
| CN208342159U (en) * | 2018-06-07 | 2019-01-08 | 上海逸航汽车零部件有限公司 | A kind of external force trigger-type clamping and release device |
| CN109924550A (en) * | 2019-04-19 | 2019-06-25 | 广西中烟工业有限责任公司 | A kind of smoking set with cigarette locking and device for ejecting |
| CN110328986A (en) * | 2019-07-22 | 2019-10-15 | 文成县简创科技有限公司 | A kind of retractable pen |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101492984B (en) * | 2008-01-23 | 2012-07-04 | 鸿富锦精密工业（深圳）有限公司 | Latching structure |
-
2021
- 2021-02-25 CN CN202110211064.6A patent/CN113146122B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0252694A1 (en) * | 1986-07-07 | 1988-01-13 | Parker Pen (Benelux) B.V. | Writing instrument |
| CN203263942U (en) * | 2013-04-16 | 2013-11-06 | 福建省百仕韦医用高分子股份有限公司 | Flow stopping clip device |
| CN203795962U (en) * | 2014-04-22 | 2014-08-27 | 嘉兴职业技术学院 | Ratchet-type invisible handle on invisible door |
| CN205734692U (en) * | 2016-06-23 | 2016-11-30 | 无锡德斯凯动力科技有限公司 | A kind of connecting rod self-locking precision hands pulls forcing press |
| CN208342159U (en) * | 2018-06-07 | 2019-01-08 | 上海逸航汽车零部件有限公司 | A kind of external force trigger-type clamping and release device |
| CN109924550A (en) * | 2019-04-19 | 2019-06-25 | 广西中烟工业有限责任公司 | A kind of smoking set with cigarette locking and device for ejecting |
| CN110328986A (en) * | 2019-07-22 | 2019-10-15 | 文成县简创科技有限公司 | A kind of retractable pen |
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| CN113146122A (en) | 2021-07-23 |
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