Automatic laser melting welding device
By designing an automatic laser melting welding device, combined with a laser welding machine and a precision positioning mechanism, the problem of fully automatic assembly of the workpiece at the melting station is solved, and a more efficient and accurate processing process is achieved.
Patent Information
- Application Number
- CN202420386234.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-29
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-02-28
AI Technical Summary
The prior art has not yet realized the automatic protective cover assembly of the workpiece at the melting station in the automobile production line, resulting in insufficient processing efficiency and accuracy.
An automatic laser melting welding device is designed, including a workbench, a welding mechanism and a workpiece positioning mechanism. The welding mechanism consists of a laser welding machine, a support frame and a laser power detection device. The workpiece positioning mechanism consists of longitudinal moving components and workpiece compression components. The precise positioning and compression of the workpiece is achieved through positioning fixtures, compression blocks, guide shafts, springs and pressure sensors.
It realizes fully automatic processing of workpiece melting, improves processing efficiency and accuracy, and reduces environmental pollution.
Smart Images
Figure CN222679801U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile production welding, in particular to an automatic laser melting welding device. Background Art
[0002] After the substrate and housing of some electronic products used in automotive equipment are assembled, a protective cover needs to be installed. For larger products, screws can be used to fasten the installation, while for smaller products, the protective cover often needs to be installed by welding and melting. The existing technology can already perform efficient and precise welding through laser welding machines, but in the assembly line, if the workpiece is to be fully automatically produced, other tooling and laser welding machines are required to achieve it. Most of the existing devices can only realize the automatic completion of part of the workpiece transmission and processing, and the process of completing the protective cover assembly process at the melting station has not yet been fully automated, and there are deficiencies in processing efficiency and precision. Utility Model Content
[0003] In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides an automatic laser melting welding device, which can perform fully automatic processing of workpiece melting and achieve more precise positioning and processing control, improve processing accuracy, and reduce environmental pollution.
[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0005] An automatic laser melting welding device comprises a workbench, a welding mechanism arranged above the workbench and a workpiece positioning mechanism arranged below the workbench, wherein the welding mechanism comprises a laser welding machine, the laser welding machine is placed above the workbench through a support frame, and the support frame and the workbench bracket are provided with a laser power detection device;
[0006] The workpiece positioning mechanism includes a longitudinal moving component and a workpiece clamping component, the longitudinal moving component includes a workpiece lifting cylinder, and a positioning fixture for positioning the workpiece is provided above the workpiece lifting cylinder; the workpiece clamping component is arranged above the positioning fixture and is slidably connected to the bottom of the workbench; the workpiece clamping component includes a positioning plate, and a clamping block is slidably connected to the bottom of the positioning plate, a longitudinally penetrating guide hole is opened in the clamping block, a guide shaft is provided in the guide hole, and a spring is provided in the clamping block.
[0007] As a further implementation, the pressing blocks are assembled to form a protective cover profile.
[0008] As a further implementation, the workpiece positioning assembly is a drawer-type structure, a slide groove is provided on the bottom surface of the positioning plate, and the top of the clamping block is slidably connected to the slide groove, so as to facilitate the removal and replacement of the clamping block.
[0009] As a further implementation method, the clamping block is limited in position by a positioning pin in the slide groove, and the positioning pin passes through the workbench longitudinally to facilitate operation.
[0010] As a further implementation method, a cylinder fixing plate is connected to the top of the workpiece lifting cylinder, and a plurality of columns are provided on the cylinder fixing plate to support the connecting plate on the top; the cylinder rod of the workpiece lifting cylinder passes through the cylinder fixing plate and the connecting plate upward in sequence, and a connecting block is provided on the top of the cylinder rod; the positioning fixture is fixedly connected to the connecting block.
[0011] As a further implementation method, a pressure sensor is provided between the positioning fixture and the connecting block to detect the clamping pressure of the workpiece and keep it within a set range to ensure that the workpiece is safely clamped, thereby ensuring processing accuracy.
[0012] As a further implementation method, a smoke exhaust pipe is also provided under the workbench. One end of the smoke exhaust pipe is connected to the dust collector, and the other end opening is enlarged and trumpet-shaped and located on one side of the positioning fixture, which can absorb the smoke generated by welding and reduce pollution.
[0013] As a further implementation method, the laser power detection device includes a laser power meter, which is driven by the front and rear cylinders of the power meter and can move linearly along a guide rail fixed on the workbench; when performing power detection, the laser power meter moves to a set position below the laser welding machine, the laser welding machine irradiates the laser, and the laser power meter detects.
[0014] As a further implementation, a contact sensor is fixed on the workbench to measure the height of the workpiece before and after melting.
[0015] As a further implementation method, the positioning fixture is also provided with a photoelectric sensor for detecting the presence and status of a workpiece on the positioning fixture.
[0016] By adopting the above technical solution, the beneficial effects of the utility model are as follows:
[0017] 1. The utility model can realize the fully automatic processing of workpiece melting by cooperating with the workpiece positioning mechanism and the welding mechanism, effectively improving the processing efficiency. At the same time, by arranging a guide shaft in the clamping block to cooperate with the spring, the clamping block can be guaranteed to move linearly and be evenly stressed, thereby improving the accuracy of workpiece melting welding.
[0018] 2. The utility model controls the power of laser irradiation through a power meter detection device, thereby controlling the melting depth to a set value, thereby improving processing accuracy.
[0019] 3. The utility model detects the height difference of the workpiece before and after melting by a contact sensor, and can timely detect whether the workpiece processing quality is qualified, ensure the quality of the workpiece flowing into the subsequent process, avoid wasting working time, and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.
[0021] Figure 1 The overall structure of the utility model Figure 1 ;
[0022] Figure 2 The overall structure of the utility model Figure 2 ;
[0023] Figure 3 This is a schematic diagram of the workpiece clamping assembly of the utility model;
[0024] Figure 4 It is a schematic diagram of the front and rear cylinders of the power meter of the utility model when they are moving forward;
[0025] Figure 5 This is the front view of the utility model when the workpiece lifting cylinder is rising;
[0026] Figure 6 for Figure 5 Sectional view at point A;
[0027] Figure 7 This is a schematic diagram of the positioning fixture structure of the utility model.
[0028] In the figure: 1. workbench; 21. laser welding machine; 22. support frame; 23. laser power meter; 24. front and rear cylinders of power meter; 25. guide rail; 3. workpiece; 41. workpiece lifting cylinder; 411. cylinder fixing plate; 412. column; 413. connecting plate; 414. connecting block; 42. positioning fixture; 421. contact sensor; 43. workpiece clamping assembly; 431. positioning plate; 432. slide groove; 433. clamping block; 434. guide hole; 435. guide shaft; 436. spring; 437. positioning pin; 44. pressure sensor; 45. exhaust pipe; 46. first photoelectric sensor; 47. optical fiber sensor; 48. second photoelectric sensor; 49. proximity switch. DETAILED DESCRIPTION
[0029] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.
[0030] Embodiment 1
[0031] This embodiment provides an automatic laser melting welding device, such as Figure 1-7 As shown, it includes a workbench 1, a welding mechanism arranged above the workbench 1 and a workpiece positioning mechanism arranged below the workbench 1, the welding mechanism includes a laser welding machine 21, the laser welding machine 21 is placed above the workbench 1 through a support frame 22, and the support frame 22 and the workbench 1 bracket are provided with a laser power detection device;
[0032] like Figure 1-2 As shown, the workpiece positioning mechanism includes a longitudinal moving component and a workpiece clamping component 43, the longitudinal moving component includes a workpiece lifting cylinder 41, and a positioning fixture 42 for positioning the workpiece 3 is provided above the workpiece lifting cylinder 41; the workpiece clamping component 43 is arranged above the positioning fixture 42 and is connected to the bottom of the workbench 1; the workpiece clamping component 43 includes a positioning plate 431, and a clamping block 433 is slidably connected to the bottom of the positioning plate 431, and a longitudinally through guide hole 434 is opened in the clamping block 433, a guide shaft 435 is provided in the guide hole 434, and a spring 436 is provided in the clamping block 433.
[0033] Considering that the pressing block 433 is a consumable part, the workpiece positioning assembly is configured as a drawer-type structure, such as Figure 2-3 As shown, the bottom surface of the positioning plate 431 is provided with a slide groove 432, and the top of the pressing block 433 is slidably connected to the slide groove 432, so as to facilitate the removal and replacement of the pressing block 433. A proximity switch 49 is provided below the workbench 1 to detect whether the pressing block 433 is reinstalled in place when replacing the pressing block 433.
[0034] In order to ensure that the workpiece is stably pressed by the pressing block 433 during melting, the pressing block 433 is limited by the positioning pin 437 in the slide groove 432. When the positioning pin 437 is installed, it passes through the workbench 1 longitudinally, and the top is located above the workbench 1 to facilitate the operation of the staff. A second photoelectric sensor 48 is provided on one side of the positioning pin 437 to detect the presence of the positioning pin 437 when replacing the pressing block 433, so as to ensure that the reinstalled pressing block 433 is installed and fixed.
[0035] like Figure 3As shown, the center of the clamping block 433 forms a protective cover profile, which can adapt to the workpiece to be assembled with an arc-shaped protrusion on the top surface. Preferably, the clamping block 433 is formed by four rectangular blocks, and two or three longitudinally penetrating guide holes 434 are provided in the clamping block. A guide shaft 435 is provided in the guide hole 434, and a spring 436 is provided in the clamping block to ensure that the clamping block moves linearly and is evenly stressed.
[0036] Considering that the impact sound of the cylinder rod is loud when the cylinder falls back, a buffer needs to be added between the positioning fixture and the workpiece lifting cylinder. Figure 7 As shown, a cylinder fixing plate 411 is connected to the top of the workpiece lifting cylinder 41, and a plurality of columns 412 are provided on the cylinder fixing plate 411 to support a connecting plate 413 at the top; the cylinder rod of the workpiece lifting cylinder 41 passes through the cylinder fixing plate 411 and the connecting plate 413 upward in sequence, and a connecting block 414 is provided on the top of the cylinder rod; the positioning fixture 42 is fixedly connected to the connecting block 414, and the connecting parts such as the fixing plate, the columns, the connecting plate and the connecting block are used as buffers, and the impact sound can be reduced by adjusting the bolts, while at the same time, the stability of the positioning fixture is increased.
[0037] A pressure sensor 44 is provided between the positioning fixture 42 and the connecting block 414 for detecting the clamping pressure of the workpiece and keeping it within a set range to ensure that the workpiece is safely clamped, thereby ensuring processing accuracy.
[0038] A smoke exhaust pipe 45 is also provided under the workbench 1, and the smoke exhaust pipe 45 is fixedly connected to the bottom of the workbench 1. The installation height of the smoke exhaust pipe 45 depends on the processing position of the workpiece. One end of the smoke exhaust pipe 45 is connected to the dust collector, and the other end opening is enlarged in a trumpet shape and is located on the rear side of the positioning fixture 42, which can absorb the smoke generated by welding and reduce pollution.
[0039] The laser power detection device includes a laser power meter 23, which is driven by the front and rear cylinders 24 of the power meter and can move linearly along the guide rail 25 fixed on the workbench 1; when performing power detection, the laser power meter 23 moves to a set position below the laser welding machine 21, the laser welding machine 21 irradiates the laser, and the laser power meter 23 detects.
[0040] A contact sensor 421 is fixed on the workbench 1 for measuring the height of the workpiece before and after melting.
[0041] A photoelectric sensor 422 is also provided above the positioning fixture 42 to detect the presence and status of a workpiece on the positioning fixture 42. In this embodiment, when assembling the housing and the upper cover of the electronic product, a first sensor 46 and an optical fiber sensor 47 are included. The first photoelectric sensor 46 detects the presence of a workpiece on the positioning fixture 42, and the optical fiber sensor 47 detects whether the workpiece on the positioning fixture 42 has an upper cover, so as to avoid the workpiece flowing in from the previous process from missing the upper cover and causing only the housing to be welded and melted. When and only when both the first photoelectric sensor and the optical fiber sensor feedback confirmation signals, the welding mechanism and the workpiece lifting cylinder 41 start working.
[0042] The working principle of this embodiment is as follows: first, before the laser welding machine 21 works, it is necessary to detect whether the output power is the set power to control the melting depth. The cylinders 24 before and after the power meter move forward, the laser welding machine 21 irradiates, and the laser power meter 23 detects the power. After completion, the cylinders 24 before and after the power meter move backward.
[0043] The workpiece flows into place from the previous process. When the first photoelectric sensor 46 detects that the workpiece 3 is placed on the positioning fixture 42, and the optical fiber sensor 47 detects the upper cover on the workpiece 3, the workpiece lifting cylinder 41 rises with the positioning fixture 42, driving the upper cover on the workpiece 3 to rise and contact the pressing block 433 and be pressed. The pressure sensor 44 also performs pressure detection to ensure that the pressure reaches the set value, which can ensure that the workpiece 3 is pressed. After pressing, the contact sensor measures a height and records it. The laser welding machine 21 uses laser irradiation. The melting position of the laser irradiation can be modified through the touch screen of the welding machine. Smoke and dust will be generated during melting. The dust collector starts to work and sucks in the smoke through the dust collector exhaust pipe 45 for dust removal. After melting is completed, the workpiece lifting cylinder 41 continues to drive the positioning fixture 42 to rise. At this time, the contact sensor measures a height again. If this height difference meets the set value, it is a qualified product. The workpiece lifting cylinder 41 descends, and the workpiece flows into the subsequent processing process.
[0044] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. An automatic laser melting welding device, characterized in that: It includes a workbench, a welding mechanism arranged above the workbench, and a workpiece positioning mechanism arranged below the workbench, wherein the welding mechanism includes a laser welding machine, and the laser welding machine is placed above the workbench through a support frame, and the support frame and the workbench bracket are provided with a laser power detection device; The workpiece positioning mechanism includes a longitudinal moving component and a workpiece clamping component, the longitudinal moving component includes a workpiece lifting cylinder, and a positioning fixture for positioning the workpiece is provided above the workpiece lifting cylinder; the workpiece clamping component is arranged above the positioning fixture and is fixedly connected to the bottom of the workbench; the workpiece clamping component includes a positioning plate, and a clamping block is slidably connected to the bottom of the positioning plate, a longitudinally penetrating guide hole is opened in the clamping block, a guide shaft is provided in the guide hole, and a spring is provided in the clamping block.
2. An automatic laser melting welding device as claimed in claim 1, characterized in that: The workpiece clamping assembly is a drawer-type structure, a slide groove is provided on the bottom surface of the positioning plate, and the top of the clamping block is slidably connected to the slide groove.
3. The automatic laser melting welding device according to claim 1, characterized in that: The pressing block is limited in position by a positioning pin in the slide groove, and the positioning pin passes through the workbench longitudinally.
4. The automatic laser melting welding device according to claim 1, characterized in that: The center of the pressing block forms a protective cover profile.
5. The automatic laser melting welding device according to claim 1, characterized in that: The top of the workpiece lifting cylinder is connected to a cylinder fixing plate, and a plurality of columns are provided on the cylinder fixing plate to support the connecting plate on the top; the cylinder rod of the workpiece lifting cylinder passes through the cylinder fixing plate and the connecting plate upward in sequence, and a connecting block is provided on the top of the cylinder rod; the positioning fixture is fixedly connected to the connecting block.
6. An automatic laser melting welding device as claimed in claim 5, characterized in that: A pressure sensor is provided between the positioning fixture and the connecting block.
7. The automatic laser melting welding device according to claim 1, characterized in that: A smoke exhaust pipe is also provided under the workbench. One end of the smoke exhaust pipe is connected to the dust collector, and the other end of the opening is enlarged and trumpet-shaped and is located on one side of the positioning fixture to absorb smoke generated by welding.
8. The automatic laser melting welding device according to claim 1, characterized in that: The laser power detection device comprises a laser power meter, which is driven by front and rear cylinders of the power meter and can move linearly along a guide rail fixed on a workbench.
9. The automatic laser melting welding device according to claim 1, characterized in that: A contact sensor is fixed on the workbench.
10. The automatic laser melting welding device according to claim 1, characterized in that: The positioning fixture is also provided with a photoelectric sensor.