Device and method for carrying out and monitoring a plastic laser transmission welding process

A technology of laser transmission welding and process, which is applied in the direction of laser welding equipment, measuring devices, welding equipment, etc., and can solve the problems of not providing more detailed descriptions of weld seams, workpiece rejection, etc.

Inactive Publication Date: 2014-05-07
LPKF LASER & ELECTRONICS
View PDF7 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This existing monitoring method implemented on welds only allows the determination of disturbances in the detected reflected measurement beam caused by imperfections in the weld, which ar

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Device and method for carrying out and monitoring a plastic laser transmission welding process
  • Device and method for carrying out and monitoring a plastic laser transmission welding process
  • Device and method for carrying out and monitoring a plastic laser transmission welding process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] figure 1 A first embodiment of a device for carrying out and monitoring a plastic laser transmission welding process is shown. The process beam source for generating and emitting a laser beam which is used as a process beam entering the joining region 1 of the two joining elements 2, 3 is not shown in more detail, since it corresponds to the Process beam source used in traditional laser transmission welding. The process beam source is used to form a weld seam 4 between two joining elements 2, 3, as in the figure 1 Between the two joining elements 2, 3 is shown in a cross-sectional view.

[0025] In order to determine the depth position of the interface 5 between the weld seam 4 and the joining elements 2, 3, in other words for welding depth monitoring in the corresponding laser transmission welding process, a measuring beam source 6 in the form of a point light source is provided, which The measuring beam 7 is processed by a lens 8 and an aperture 9 to obtain a focus...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A device and a method for carrying out and monitoring a plastic laser transmission welding process comprises a processing beam source for emitting a processing beam into a joining zone (1) between two parts being joined (2, 3) while forming a weld (4), a measuring beam source (6) for irradiating a measuring zone (12) with a measuring beam (7), a detection unit (13) for detecting the measuring beam (7) reflected by an interface (5) between the weld (4) and its surroundings in the parts being joined (2, 3), and an evaluation unit (15), connected to the detection unit (13), for determining the depth position of the interface (5) in the parts being joined (2, 3) from the reflected measuring beam (7) that is detected.

Description

technical field [0001] The invention relates to a device and a method for carrying out and monitoring a laser transmission welding process of plastics, having the technical features as stated in the preamble of claim 1 or 11, respectively. Background technique [0002] The technique of laser transmission welding of plastics is disclosed in several documents, for example EP 1 575 756 B1 or DE 10 2004 036 576 B4. [0003] Generally speaking, the transmissive joining element of the laser process beam is placed on the joining element which absorbs said beam. A molten pool is produced in the absorptive joint element when the corresponding joint region located between the two joint elements is exposed to the light beam emitted through the transmissive joint element. As a result of the contact with the transmissive joining element, a corresponding amount of thermal energy is transferred into the transmissive joining element, causing the transmissive joining element to also melt in...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B29C65/16B29C65/82G01N21/17G01N21/958
CPCB29C65/1638B29C65/1654B29C65/1674B29C66/1122B29C66/41B29C66/836B29C66/952B29C65/8253B23K26/0648B29C66/91216B23K31/125G01J5/0014B29C66/91411B29C65/1635B29C66/961B29C66/9161B29C65/00G01J5/48B29C65/16
Inventor M·西本D·赫特勒
Owner LPKF LASER & ELECTRONICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap