CN212541071U - Positioning system of laser resistance trimming machine - Google Patents
Positioning system of laser resistance trimming machine Download PDFInfo
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- CN212541071U CN212541071U CN202021521131.1U CN202021521131U CN212541071U CN 212541071 U CN212541071 U CN 212541071U CN 202021521131 U CN202021521131 U CN 202021521131U CN 212541071 U CN212541071 U CN 212541071U
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Abstract
The invention provides a positioning system for a laser resistor trimming machine, wherein an MCU (microprogrammed control Unit) sends a control instruction and controls a displacement and angle adjusting unit to perform fine adjustment on an element to be trimmed; the laser light source unit provides a laser light source with the wavelength required by the laser resistance trimming machine; the laser scanning unit carries out laser scanning on the element to be adjusted according to the instruction of the MCU control unit to obtain specific parameters of the element to be adjusted; the mechanical unit drives the mechanical arm to move to an appointed position according to an instruction of the MCU control unit, and the displacement and angle adjusting unit adjusts the position and the angle of the element to be adjusted according to the parameters acquired by the laser scanning unit; the monitoring unit carries out real-time monitoring according to the parameters acquired by the laser scanning unit and feeds back the monitoring result to the MCU control unit. The positioning system of the laser resistor trimming machine can monitor the position and the angle of the element to be trimmed in real time, and the MCU control unit sends an instruction to perform fine adjustment, so that the element to be trimmed is accurately positioned, the production efficiency is improved, and the product competitiveness is improved.
Description
Technical Field
The invention relates to the field of laser application, in particular to a positioning system for a laser resistor trimming machine.
Background
As electronic products continuously pursue higher and higher requirements for intellectualization, multifunction and miniaturization, electronic components are required to be developed towards the direction of intellectualization, multifunction and miniaturization, so that the application of the adjustable resistor in various electronic devices is increasingly wide.
Due to inherent error of screen printing operation, non-uniformity of substrate surface and non-repeatability of sintering conditions, positive and negative errors often occur in thick film resistors, if the resistance value exceeds a nominal value, correction cannot be performed, and the resistance value is lower than about 30% of a target value after printing and firing in general, so that the target value is reached through laser adjustment, and in order to improve the precision of a thick film circuit, resistance value correction is required.
Chinese patent application No. 201010144362X discloses a method for quickly and accurately positioning a laser resistance-adjusting substrate, which combines image recognition and grating feedback to quickly and accurately position the substrate. The grating feedback assembly is added in the scheme, so that the design cost is high and the maintenance is inconvenient.
Therefore, there is a need to develop a laser trimming system that overcomes the drawbacks of the prior art.
Disclosure of Invention
In order to solve the defects of higher design cost and complex structural design in the prior art, the invention provides a positioning system for a laser resistor trimming machine, which has the following technical scheme:
a positioning system of a laser resistor trimming machine, comprising:
the MCU control unit is respectively electrically connected with the laser light source unit, the laser scanning unit, the mechanical unit, the displacement and angle adjusting unit and the monitoring unit and is used for sending control instructions to the laser light source unit, the laser scanning unit, the mechanical unit, the displacement and angle adjusting unit and the monitoring unit and controlling the displacement and angle adjusting unit to finely adjust the element to be adjusted;
the laser light source unit is used for providing a laser light source with the wavelength required by the laser resistance trimming machine;
the laser scanning unit is used for carrying out laser scanning on the element to be regulated according to the instruction of the MCU control unit to obtain specific parameters of the element to be regulated;
the mechanical unit is used for driving the mechanical arm to move to a specified position according to the instruction of the MCU control unit, so that the displacement and angle adjusting unit can conveniently adjust the parameters of the element to be adjusted;
the displacement and angle adjusting unit is used for adjusting the position and the angle of the element to be adjusted according to the parameters acquired by the laser scanning unit;
the monitoring unit is used for monitoring in real time according to the parameters acquired by the laser scanning unit and feeding back the monitoring result to the MCU control unit.
Further, the laser wavelength is 532nm or 1064 nm.
Furthermore, the laser light source adopts an all-solid-state YAG/YVO4 pulse laser.
By adopting the positioning system, the position and the angle of the element to be adjusted can be monitored in real time, the MCU control unit is used for sending an instruction to carry out fine adjustment, the element to be adjusted is accurately positioned, the production efficiency is improved, and the product competitiveness is improved.
Drawings
FIG. 1: the invention discloses a schematic diagram of a positioning system of a laser resistor trimming machine.
Detailed Description
The laser resistance trimming system of the present invention is described below with reference to examples, and it should be understood that the examples are only for explaining the best mode of the present invention and are not intended to limit the scope of the present invention.
Referring to fig. 1, a schematic diagram of a positioning system of a laser resistor trimming machine is shown, the system includes an MCU control unit 101 electrically connected to a laser light source unit 102, a laser scanning unit 103, a mechanical unit 104, a displacement and angle adjusting unit 105, and a monitoring unit 106, wherein the laser light source unit 102, the laser scanning unit 103, the mechanical unit 104, the displacement and angle adjusting unit 105, and the monitoring unit 106 are electrically connected in sequence.
The MCU control unit 101 is configured to send control commands to the laser light source unit 102, the laser scanning unit 103, the mechanical unit 104, the displacement and angle adjusting unit 105, and the monitoring unit 106, and control the displacement and angle adjusting unit 105 to perform fine adjustment according to feedback information of the units to achieve a required adjustment accuracy.
The laser source unit 102 is used to provide a laser source with a wavelength required by the laser resistor trimming machine, for example, the laser wavelength may be 532nm or 1064nm, and a pulse laser is used as the laser source to provide a suitable power and beam diameter.
The laser scanning unit 103 is configured to perform laser scanning on the component to be adjusted according to an instruction of the MCU control unit 101, so as to obtain specific parameters of the component to be adjusted.
The mechanical unit 104 is used for driving the mechanical arm to move to a designated position according to an instruction of the MCU control unit 101, so that the displacement and angle adjusting unit 105 can adjust parameters of the to-be-adjusted element.
The displacement and angle adjusting unit 105 is used for adjusting the position and angle of the element to be adjusted according to the specific parameters of the laser scanning unit 103, so as to further obtain more accurate element parameters.
The monitoring unit 106 is configured to perform real-time monitoring according to the parameters obtained by scanning performed by the laser scanning unit 103, feed back the monitoring result to the MCU control unit 101, and determine whether the adjustment parameters are reached by the MCU control unit, so as to determine whether to continue adjusting or stop adjusting the parameters of the to-be-adjusted element.
The above embodiments of the present invention are explained by using resistors, and those skilled in the art can understand that the positioning system of the laser resistor trimming machine of the present invention can also perform precise trimming and positioning on parameters such as voltage, current, time, frequency, pressure, etc. after being externally connected with an external measuring instrument, for example, the positioning system can be externally connected with external devices such as a digital multimeter, a programmable power supply, an electronic load, a pressure controller, an oscilloscope, etc. to achieve trimming and positioning of different parameters.
Claims (3)
1. A positioning system of a laser resistor trimming machine is characterized by comprising:
the MCU control unit is respectively electrically connected with the laser light source unit, the laser scanning unit, the mechanical unit, the displacement and angle adjusting unit and the monitoring unit and is used for sending control instructions to the laser light source unit, the laser scanning unit, the mechanical unit, the displacement and angle adjusting unit and the monitoring unit and controlling the displacement and angle adjusting unit to finely adjust the element to be adjusted;
the laser light source unit is used for providing a laser light source with the wavelength required by the laser resistance trimming machine;
the laser scanning unit is used for carrying out laser scanning on the element to be regulated according to the instruction of the MCU control unit to obtain specific parameters of the element to be regulated;
the mechanical unit is used for driving the mechanical arm to move to a specified position according to the instruction of the MCU control unit, so that the displacement and angle adjusting unit can conveniently adjust the parameters of the element to be adjusted;
the displacement and angle adjusting unit is used for adjusting the position and the angle of the element to be adjusted according to the parameters acquired by the laser scanning unit;
the monitoring unit is used for monitoring in real time according to the parameters acquired by the laser scanning unit and feeding back the monitoring result to the MCU control unit.
2. The positioning system of claim 1, wherein the laser source has a wavelength of 532nm or 1064 nm.
3. The positioning system as set forth in claim 1, wherein the laser source is an all-solid-state YAG/YVO4 pulsed laser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021521131.1U CN212541071U (en) | 2020-07-29 | 2020-07-29 | Positioning system of laser resistance trimming machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021521131.1U CN212541071U (en) | 2020-07-29 | 2020-07-29 | Positioning system of laser resistance trimming machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212541071U true CN212541071U (en) | 2021-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021521131.1U Active CN212541071U (en) | 2020-07-29 | 2020-07-29 | Positioning system of laser resistance trimming machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212541071U (en) |
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2020
- 2020-07-29 CN CN202021521131.1U patent/CN212541071U/en active Active
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