CN110052705B - Welding fixture for laser welding of plastic parts - Google Patents
Welding fixture for laser welding of plastic parts Download PDFInfo
- Publication number
- CN110052705B CN110052705B CN201910502526.2A CN201910502526A CN110052705B CN 110052705 B CN110052705 B CN 110052705B CN 201910502526 A CN201910502526 A CN 201910502526A CN 110052705 B CN110052705 B CN 110052705B
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- welding
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- positioning plate
- clamping plate
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- 238000003466 welding Methods 0.000 title claims abstract description 79
- 238000004023 plastic welding Methods 0.000 title abstract description 12
- 238000006073 displacement reaction Methods 0.000 claims description 21
- 238000003825 pressing Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 8
- 238000003754 machining Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000013305 food Nutrition 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
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/083—Devices involving movement of the workpiece in at least one axial direction
- B23K26/0853—Devices involving movement of the workpiece in at least in two axial directions, e.g. in a plane
- B23K26/0861—Devices involving movement of the workpiece in at least in two axial directions, e.g. in a plane in at least in three axial directions
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
-
- 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
-
- 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
- B23K37/0461—Welding tables
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/30—Organic material
- B23K2103/42—Plastics
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Laser Beam Processing (AREA)
Abstract
The application provides a welding fixture for laser welding of plastic parts, which is characterized by comprising a bottom plate, a positioning plate, a clamping plate and a driving unit, wherein the positioning plate is positioned on the upper side of the bottom plate and used for placing a welding workpiece, the clamping plate is positioned on the upper side of the positioning plate, and the driving unit is used for driving the positioning plate and the clamping plate to move along the Z-axis direction. According to the welding fixture for laser welding of plastic parts, the clamping plate and the positioning plate can move up and down, and the defocusing amount can be set by adjusting the heights of the clamping plate and the positioning plate, so that the flexibility in the welding process is greatly improved.
Description
Technical Field
The application relates to a welding fixture for laser welding of plastic parts.
Background
The laser transmission welding of plastics is a novel bonding technology, and is widely applied to industries such as automobiles, foods, medical treatment and the like due to the advantages of small residual stress, small heat affected zone, no residue, high automation degree and the like. The welding fixture is an important device for completing laser welding, has the functions of clamping a workpiece, reducing welding errors and improving machining strength, and therefore the performance of the welding fixture influences the machining quality of welding to a great extent.
Conventional welding jigs generally include a clamping mechanism and a support device. The supporting device has the main function of supporting the weldment, is simpler in structure and is used for reducing deformation in the welding process. The clamping mechanism is mainly used for pressing the clamping plate, so that the clamping plate further clamps the welding piece, welding deformation is reduced, and welding strength is improved. Above-mentioned traditional welding jig exists a great deal of defect, lacks weldment positioner, can lead to clamping plate distortion inefficacy when placing the position inadequately, and welding precision is low, and course of working degree of automation is low, can not satisfy quick simple demand, extravagant artifical manpower, and can make clamping plate distortion inefficacy when the atress is inhomogeneous, leads to welding process's inefficacy.
Disclosure of Invention
The application aims to provide a welding fixture for laser welding of plastic parts.
In order to solve the technical problems, the application provides a welding fixture for laser welding of plastic parts, which is characterized by comprising a bottom plate, a positioning plate, a clamping plate and a driving unit, wherein the positioning plate is positioned on the upper side of the bottom plate and used for placing a welding workpiece, the clamping plate is positioned on the upper side of the positioning plate, and the driving unit is used for driving the positioning plate and the clamping plate to move along the Z-axis direction.
Preferably, the driving unit is a double-layer double-shaft ball screw assembly, the double-layer double-shaft ball screw assembly comprises two first double-shaft ball screws which are arranged left and right and used for driving the positioning plate to move along the Z-axis direction, two second double-shaft ball screws which are arranged left and right and used for driving the clamping plate to move along the Z-axis direction, the left and right sides of the positioning plate are driven by the first double-shaft ball screws respectively, and the left and right sides of the clamping plate are driven by the second double-shaft ball screws respectively.
Preferably, the first double-shaft ball screw drives a first displacement block to move along the Z-axis direction, the positioning plate is connected with the first displacement block through a first connecting block, the second double-shaft ball screw drives a second displacement block to move along the Z-axis direction, and the clamping plate is connected with the second displacement block through a second connecting block.
Preferably, a row of button switches arranged along the front-rear direction are arranged on the positioning plate, the button switches have an ejecting state and an embedding state, and when the button switches are in the ejecting state, the height of the button switches exceeding the positioning plate is smaller than the height of the welding workpiece; when the button switch is in an embedded state, the button switch is flush with the surface of the positioning plate.
Preferably, the clamping plate is provided with a through hole penetrating up and down, and the through hole is used for passing a laser beam.
Preferably, the lower surface of the clamping plate is provided with a pressure sensing piece for detecting the pressing force.
Preferably, the bottom plate is further provided with an acquisition converter in signal connection with the pressure sensing sheet, and the acquisition converter is used for converting the pressing force electric signal detected by the pressure sensing sheet into a digital signal.
Preferably, the bottom plate is further provided with a numerical display electrically connected with the acquisition converter, and the numerical display is used for displaying the detected pressing force.
Preferably, the bottom plate is fixed on the welding workbench through screws.
According to the welding fixture for laser welding of plastic parts, the clamping plate and the positioning plate can move up and down, and the defocusing amount can be set by adjusting the heights of the clamping plate and the positioning plate, so that the flexibility in the welding process is greatly improved.
Drawings
Fig. 1 is a schematic structural view of a welding jig for laser welding of plastic parts according to the present application.
Wherein: 1. a bottom plate; 2. double-deck biax ball; 3. a first displacement block; 4. a first connection block; 5. a positioning plate; 6. a clamping plate; 7. a second connection block; 8. a second displacement block; 9. welding a workpiece; 10. a pressure sensing sheet; 11. a push button switch; 12. a collecting converter; 13. a numerical display; 61. and a through hole.
Detailed Description
The present application will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the application and practice it.
As shown in the figure, the welding fixture for laser welding of plastic parts comprises a horizontally placed bottom plate 1, wherein a supporting unit for horizontally bearing a welding workpiece 9, a clamping unit and a driving unit are arranged on the bottom plate 1, and the clamping unit and the driving unit are arranged above the welding workpiece 9. The clamping unit comprises a clamping plate 6 horizontally arranged relative to the base plate 1, and the clamping plate 6 is fixed on the second displacement block 8 through the second connecting block 7. The driving unit comprises the double-layer double-shaft ball screw 2 and drives the second displacement block 8 to move downwards, so that the clamping plate 6 synchronously moves downwards to clamp the welding workpiece 9. The clamping plate 6 is provided with a through hole 61 for the laser beam to pass through the work piece. Through the arrangement mode, the driving unit drives the clamping plate 6 to move up and down to clamp the welding workpiece 9 arranged on the supporting unit, so that the clamping, positioning and releasing of the welding workpiece 9 are completed, the structure is optimized, and the automation degree is high.
The bottom plate 1 is fixedly arranged on the welding workbench through screws, so that vibration during welding can be effectively reduced, and welding is performed stably. The positioning plate 5 is fixed on the first displacement block 3 through the first connecting block 4, and drives the first displacement block 4 to move up and down through a double-layer double-shaft ball screw. Specifically, the positioning plate 5 is fixed to the double-shaft ball screw 2 while stationary, and can also move up and down. Through foretell setting method, not only can guarantee the stability of locating plate 5, avoid leading to welding precision to descend because locating plate 5 displacement warp in the welding process, strengthen the stability and the dynamics of bearing the weight of supporting unit effectively to the accessible adjusts locating plate 5 and presss from both sides the high settlement defocusing volume of tight board 6, greatly increased the flexibility ratio in the welding process.
In a preferred embodiment, the upper surface of the positioning plate 5 is provided with a plurality of push-button switches 11 sequentially in the front-rear direction, the push-button switches 11 have a height smaller than the height of the welding sample 9 in the up-down direction in the ejected state, and are flush with the surface of the positioning plate 5 in the embedded state. In the clamping process, the welding sample 9 is placed on the positioning plate 5, and one side edge of the welding sample 9 is abutted against the positioning position 11 of the positioning plate 5, so that the welding position on the welding sample 9 is located below the through hole 61 of the clamping plate 6, positioning of the welding sample 9 is completed, and welding accuracy is guaranteed. When the button switch 11 is embedded, the surface area of the positioning plate 5 for placing the welding sample 9 is increased, so that a larger sample can be clamped, and the application range of the clamp is increased.
The driving unit comprises a double-layer double-shaft ball screw 2 arranged on the bottom plate 1, and the double-layer double-shaft ball screw 2 provides driving force to drive a first displacement block 3 and a second displacement block 8 fixed on the double-layer double-shaft ball screw to move. The positioning plate 5 and the clamping plate 6 are respectively fixed on the double-layer double-shaft ball screw 2 through the first connecting block 4 and the second connecting block 7 to move up and down so as to clamp the welding workpiece 9. In the application, the driving mode of the ball screw is adopted, so that the automation degree is improved, and the labor intensity is reduced.
The clamping plate 6 is provided above the positioning plate 5 so as to be liftable in the up-down direction for clamping the welding workpiece 9 between the clamping plate 6 and the positioning plate 5. The clamping plate 6 is fixed on the second displacement block 8 through the second connecting block 7, and clamping and loosening actions are carried out along with up-and-down movement of the second displacement block 8, so that the clamping plate 6 can be positioned and guided, the clamping plate 6 is prevented from moving, and distortion failure of the clamping plate 6 caused by uneven stress is relieved.
The clamping plate 6 is provided with a through hole 61 penetrating up and down, when the clamping plate 6 clamps the workpiece 9 to be welded on the positioning plate 5 downwards, the part to be welded of the workpiece 9 is positioned at the position of the through hole 61, and the laser beam generated by the laser passes through the through hole 61 to perform laser welding processing on the workpiece 9.
The pressure sensing piece 11 used for checking the pressing force is arranged below the clamping plate 6, so that the clamping force applied by the clamping plate 6 to the welding workpiece 9 can be accurately detected, the measuring time is short, and the measuring result is accurate. The base plate 1 is fixedly provided with an acquisition converter 12 connected with the pressure sensing sheet 10, and the acquisition converter 12 converts the pressing force electric signal detected by the pressure sensing sheet 11 into a digital signal. The bottom plate 1 is fixedly provided with a numerical display 13 electrically connected with the acquisition converter 12, and the numerical display 13 is used for displaying the detected pressing force. Through the arrangement mode, the numerical value of the clamping force applied by the clamping plate 6 can be intuitively observed, and convenient conditions are provided for later adjustment of the clamping force.
The welding fixture has the advantages of simple structure, convenient operation, lower cost, higher strength and long service life, can effectively improve the welding quality and precision of weldments, and is particularly suitable for clamping plastic welding workpieces in the laser welding process.
The welding fixture of the application has the following specific working procedures:
Initial state: a gap for placing the welding workpiece 9 is formed between the clamping plate 6 and the positioning plate 5 under the driving of the double-layer double-shaft ball screw 2; clamping action: the double-layer double-shaft ball screw 2 drives the second displacement block 8 to move downwards to drive the second connecting block 7 to descend, so that the clamping plate 6 moves downwards until abutting against the welding workpiece 9, and clamping of the welding workpiece 9 is completed; and (3) pressure detection: the pressure sensing piece 10 detects the pressing force applied to the welding workpiece 9 and converts the pressing force into an electric signal to be transmitted to the acquisition converter 12, the acquisition converter 13 converts the electric signal into a digital signal to be transmitted to the numerical display 13, and the numerical display 13 displays the value of the pressing force; release state: the double-layer double-shaft ball screw 2 drives the second displacement block 8 to move upwards to drive the second connecting block 7 to ascend, so that the clamping plate 6 loosens the welding workpiece 9; pressure resetting: when resetting, the pressure sensing piece 10 is not pressed, and the numerical display is reset.
The driving mode of the welding fixture adopts a double-layer double-shaft ball screw, a driving motor is arranged at the lower part, and the ball screws at the left side and the right side are driven by the same motor, so that the structure ensures the parallelism and the synchronism of the clamping action of the clamping plate 6.
The double-layer double-shaft ball screw design is adopted, the upper and lower layers of platforms can move up and down, the machining flexibility is greatly improved, and the defocusing amount can be set by adjusting the height of the double layers. The double-layer double-shaft ball screw design is adopted, the upper and lower layers of platforms can move up and down, the machining flexibility is greatly improved, and the defocusing amount can be set by adjusting the height of the double layers. The pressure sensing piece 10 is directly arranged at the lower part of the clamping plate 6 and is directly contacted with a welding workpiece, the pressure received through sensing is converted into clamping force, the measured clamping force is accurate, and the measuring mode is convenient and rapid. The signal collector 12 and the digital display 13 which are electrically connected with the pressure sensing sheet 10 are directly arranged on the bottom plate, so that the numerical value of the pressing force can be directly read, and the observation mode is visual and convenient. The upper surface of the clamping plate 6 is provided with a plurality of button switches 11, and when the button switches 11 are sprung, the height of the button switches is smaller than that of a welding workpiece, so that the welding position of a welding sample is ensured, and the welding precision is ensured; when the push button switch 11 is turned off, the placement area on the support plate becomes large, and the sample size that can be clamped becomes large.
In the present application, the Z-axis direction is the up-down direction shown in fig. 1, the arrangement direction of the push-button switches shown in fig. 1 is the front-back direction, and the direction perpendicular to the Z-axis direction and the front-back direction is the left-right direction.
The above-described embodiments are merely preferred embodiments for fully explaining the present application, and the scope of the present application is not limited thereto. Equivalent substitutions and modifications will occur to those skilled in the art based on the present application, and are intended to be within the scope of the present application. The protection scope of the application is subject to the claims.
Claims (8)
1. The welding fixture for the laser welding of the plastic parts is characterized by comprising a bottom plate, a positioning plate, a clamping plate and a driving unit, wherein the positioning plate is positioned on the upper side of the bottom plate and used for placing a welding workpiece, the clamping plate is positioned on the upper side of the positioning plate, and the driving unit is used for driving the positioning plate and the clamping plate to move along the Z-axis direction;
the driving unit is a double-layer double-shaft ball screw assembly, the double-layer double-shaft ball screw assembly comprises a first double-shaft ball screw, two second double-shaft ball screws, wherein the first double-shaft ball screw is arranged left and right and used for driving the positioning plate to move along the Z-axis direction, the second double-shaft ball screw is arranged left and right and used for driving the clamping plate to move along the Z-axis direction, the left side and the right side of the positioning plate are driven by the first double-shaft ball screw respectively, and the left side and the right side of the clamping plate are driven by the second double-shaft ball screw respectively.
2. The welding jig of claim 1 wherein the first dual-axis ball screw drives a first displacement block to move in the Z-axis direction, the positioning plate is connected to the first displacement block by a first connection block, the second dual-axis ball screw drives a second displacement block to move in the Z-axis direction, and the clamping plate is connected to the second displacement block by a second connection block.
3. The welding fixture of claim 1, wherein the positioning plate is provided with a row of push-button switches arranged in a front-rear direction, the push-button switches have an ejecting state and an embedding state, and when the push-button switches are in the ejecting state, the height of the push-button switches exceeding the positioning plate is smaller than the height of the welding workpiece; when the button switch is in an embedded state, the button switch is flush with the surface of the positioning plate.
4. The welding jig of claim 1 wherein the clamping plate is provided with vertically extending through holes for the passage of laser beams.
5. The welding jig of claim 1 wherein said clamping plate has a pressure sensitive strip mounted on a lower surface thereof for detecting a pressing force.
6. The welding jig of claim 5 wherein said base plate is further provided with an acquisition transducer in signal communication with said pressure sensitive strip, said acquisition transducer being adapted to convert an electrical signal of the compressive force detected by said pressure sensitive strip into a digital signal.
7. The welding fixture of claim 6, wherein the base plate further comprises a numerical display electrically coupled to the acquisition converter, the numerical display configured to display the detected compressive force.
8. The welding fixture of claim 6, wherein the base plate further comprises a numerical display electrically coupled to the acquisition converter, the numerical display configured to display the detected compressive force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910502526.2A CN110052705B (en) | 2019-06-11 | 2019-06-11 | Welding fixture for laser welding of plastic parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910502526.2A CN110052705B (en) | 2019-06-11 | 2019-06-11 | Welding fixture for laser welding of plastic parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110052705A CN110052705A (en) | 2019-07-26 |
| CN110052705B true CN110052705B (en) | 2024-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910502526.2A Active CN110052705B (en) | 2019-06-11 | 2019-06-11 | Welding fixture for laser welding of plastic parts |
Country Status (1)
| Country | Link |
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| CN (1) | CN110052705B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115890095B (en) * | 2021-09-30 | 2023-11-28 | 宁德时代新能源科技股份有限公司 | Battery assembly assembling method, clamp and welding equipment |
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| CN210080980U (en) * | 2019-06-11 | 2020-02-18 | 苏州大学 | Welding fixture for laser welding of plastic parts |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004004985B4 (en) * | 2004-01-30 | 2006-03-23 | Lpkf Laser & Electronics Ag | Method and device for transmission welding of two thermoplastic components |
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|---|---|---|---|---|
| CN104552921A (en) * | 2014-12-31 | 2015-04-29 | 东莞理工学院 | Plastic laser hybrid welding system |
| CN206029392U (en) * | 2016-09-18 | 2017-03-22 | 东莞宜安科技股份有限公司 | Cell -phone center CNC anchor clamps |
| CN206216131U (en) * | 2016-12-02 | 2017-06-06 | 嘉兴鑫铭源喷灌设备有限公司 | Adjustable laser drilling device |
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| Publication number | Publication date |
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| CN110052705A (en) | 2019-07-26 |
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