CN215066631U - Testing device for welding resistance of connector pin - Google Patents
Testing device for welding resistance of connector pin Download PDFInfo
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- CN215066631U CN215066631U CN202120844000.5U CN202120844000U CN215066631U CN 215066631 U CN215066631 U CN 215066631U CN 202120844000 U CN202120844000 U CN 202120844000U CN 215066631 U CN215066631 U CN 215066631U
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- material fixing
- lifting platform
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Abstract
The utility model discloses a device for testing the solder resistance of a connector pin, which comprises a tin furnace, a positioning plate, a lifting platform and a controller; the positioning plate is positioned above the tin furnace in parallel, and the tin furnace, the lifting platform and the controller are horizontally arranged on the same plane; the top of the lifting platform is provided with a stepping motor, and the lifting platform comprises a screw rod, a first limit switch, a second limit switch, a material fixing device and two vertical supports which are parallel to each other; the material fixing device is provided with a material fixing clamp and an ultrasonic sensor, and the material fixing clamp and the ultrasonic sensor are both positioned above the positioning plate in parallel; the lead screw is connected with step motor, and step motor and ultrasonic sensor all are connected with the controller. The utility model discloses the operator of being convenient for fixes the measured material in appointed position, and accurately immerses appointed wicking height in the tin stove to the connector pin to accurately test connector pin solderability.
Description
Technical Field
The utility model belongs to the technical field of the inspection technique of connector pin solderability and specifically relates to an inspection device of connector pin solderability.
Background
Traditional solderability test is that the user seeks the specification, uses anchor clamps or the manual wicking of son, and the material that is being soaked the tin leads to or too high because manual control is highly inaccurate, soaks the connector pin area not enough, crosses lowly, leads to even also soaking the tin face to plastics, also because immersion time is inaccurate, makes the wicking time overlength, and metal pin can be because of the temperature surpasss design temperature, can follow and drop in the plastics, influences the effect of verifying.
SUMMERY OF THE UTILITY MODEL
In order to solve at least one technical problem, an object of the utility model is to provide a verifying attachment of connector pin solderability.
The utility model adopts the technical proposal that:
the utility model comprises a device for testing the solder resistance of a connector pin, which comprises a tin furnace, a positioning plate, a lifting platform and a controller; the positioning plate is positioned above the tin furnace in parallel, and the tin furnace, the lifting platform and the controller are horizontally placed on the same plane;
the top of the lifting platform is provided with a stepping motor, and the lifting platform comprises a screw rod, a first limit switch, a second limit switch, a material fixing device and two vertical supports which are parallel to each other; the screw rod is arranged between the two parallel vertical supports, the first limit switch and the second limit switch are arranged on the vertical supports in parallel at a certain interval, the material fixing device is arranged on the vertical supports and is positioned between the first limit switch and the second limit switch, and the material fixing device is positioned above the positioning plate in parallel;
the material fixing device is provided with a material fixing clamp and an ultrasonic sensor, and the material fixing clamp and the ultrasonic sensor are both positioned above the positioning plate in parallel;
the lead screw with step motor is connected, step motor with ultrasonic sensor all with the controller is connected.
Further, the controller comprises a microprocessor, and the first limit switch and the second limit switch are connected with the microprocessor.
Further, the microprocessor is connected with the ultrasonic sensor.
Further, the controller also comprises a stepping motor controller, and the stepping motor controller is connected with the microprocessor.
Further, the controller also comprises a stepping motor driver, and the stepping motor driver is connected with the stepping motor controller.
Further, the stepping motor driver is connected with the stepping motor.
The utility model has the advantages that:
the utility model connects the lead screw of the lifting platform with the stepping motor, so that the lead screw can be controlled by the stepping motor to drive the lifting platform to move up and down, and the distance from the lifting platform to the positioning plate is detected through the ultrasonic module, thereby precisely controlling the lifting distance; material fixation clamp and ultrasonic sensor set up in the parallel top of locating plate, and the locating plate sets up the parallel top at the tin stove again, and ultrasonic sensor is connected with the controller, can detect the distance of material fixation clamp to the locating plate, and then accurately control the distance of going up and down, the operator of being convenient for fixes the measured material in appointed position, and accurately dip the appointed wicking height in the tin stove to the connector pin, thereby test connector pin solderability accurately.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which,
fig. 1 is a schematic structural view of a device for testing solder resistance of a connector pin according to the present invention;
fig. 2 is a flow chart of the inspection device for the solder resistance of the connector pin of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
The embodiments of the present application will be further explained with reference to the drawings.
Referring to fig. 1, the utility model provides a device for testing the soldering resistance of a connector pin, which comprises a tin furnace 1, a positioning plate 2, a lifting platform 3 and a controller 4;
the positioning plate 2 is positioned above the tin furnace 1 in parallel, and the tin furnace 1, the lifting platform 3 and the controller 4 are horizontally placed on the same plane;
the top of the lifting platform 3 is provided with a stepping motor 5, and the lifting platform 3 comprises a screw rod 301, a first limit switch 302, a second limit switch 303, a material fixing device 304 and two vertical supports 305 which are parallel to each other; the screw 301 is installed between two parallel vertical supports 305, the first limit switch 302 and the second limit switch 303 are installed on the vertical supports 305 in parallel at a certain distance, the material fixing device 304 is installed on the vertical supports 305 and located between the first limit switch 302 and the second limit switch 303, and the material fixing device 304 is located above the positioning plate 2 in parallel;
the material fixing device 304 is provided with a material fixing clamp 304-1 and an ultrasonic sensor 304-2, and the material fixing clamp 304-1 and the ultrasonic sensor 304-2 are both positioned above the positioning plate 2 in parallel;
the screw rod 301 is connected with the stepping motor 5, and both the stepping motor 5 and the ultrasonic sensor 304-2 are connected with the controller 4.
In this embodiment, the controller specifically further includes the following:
(1) a power supply module; the voltage of 220V is input, DC24V and DC5V direct current power supplies are provided, and power supplies are provided for all loops;
(2) a microprocessor; the power failure detection circuit comprises a reset circuit, a crystal oscillator source circuit and a power failure detection circuit;
(3) a touch display screen; the power supply of the touch display screen is supplied with power by the power supply module DC5V, the control is connected by the signals of the microprocessor RX and TX, when the microprocessor sends a serial port instruction to the touch display screen, relevant parameters can be set and displayed on the screen of the touch display screen, and the relevant parameters comprise: the current depth, the immersion depth and the immersion time of the elevating platform; when a person touches a designated area of the touch display screen, the current depth of the lifting platform can be adjusted up and down, meanwhile, the tin immersion sinking distance (the numerical value is set to be 1-40mm), the tin immersion time is 1-20 seconds) and the like can be set by operating the touch screen, and after the setting is finished, the numerical value of the screen can be fed back to the microprocessor by the display of the touch screen, so that the microprocessor responds to the corresponding setting and stores the corresponding setting in the register;
(4) a stepper motor driver; DC24V power is provided by a power module; the output end A + and A-of the stepping motor driver is connected with the phase A (A + and A-); the other end B + and B-of the stepping motor driver is connected with a phase B (B + and B-) of the stepping motor, and an input control end PUL +, DIR + and EN + of the stepping motor driver are respectively connected with PUL, DIR and EN + of a stepping motor controller; PUL-, DIR-EN-of the stepping motor driver are all connected with GND of the stepping motor controller, and the cathodes of the PUL-, DIR-EN-of the stepping motor driver are grounded; the stepping motor driver is responsible for controlling the stepping motor to do corresponding actions according to the corresponding speed and direction;
(5) a stepper motor controller; a power supply module provides DC24V power supply, and output control ends PUL, DIR and EN of the stepping motor controller are respectively connected with PUL +, DIR + and EN + of a stepping motor driver; GND of the stepping motor controller is connected with PUL-, DIR-EN-of the stepping motor driver, ATX and ARX of the stepping motor controller are connected with MAX232 chips, and the chips transmit TTL level of the microprocessor and convert the TTL level into 232 level; the stepping motor controller is used for receiving a control instruction of the microprocessor and converting the control instruction into a pulse signal PUL +, DIR +, EN +, PUL-, DIR-EN-for driving a stepping motor driver so that the stepping motor acts according to the control instruction;
(6) an EEPROM chip; the power module provides DC5V power, the WP, SCL and SDA ports of the EEPROM chip are connected with the three ports of the microprocessor, and are responsible for IIC communication, and the microprocessor performs reading and writing operations;
(7) MAX232 chip; the power module provides a DC5V power supply, a serial TTL level is input by the microprocessor, RX2 and TX2 are connected to MAX232TTL level input pins, and 232 level output pins are connected to ATX and ARX of the stepping motor controllers, and MAX232 GND is connected with GND of the system in common.
In this embodiment, the ultrasonic sensor in the inspection device is powered by the power module to provide DC5V power, and is connected with three ports SDA, SCL, TRIG of microprocessor through the IIC bus, is read by microprocessor, and it can be used to measure the distance from the tin stove locating plate to the elevating platform, and the detection range is 1-60cm, and the precision is 1 mm.
In this embodiment, the first limit switch and the second limit switch in the inspection apparatus input level signals to the microprocessor, so that the microprocessor detects a level change, when the material fixing apparatus reaches a limit, the microprocessor sends a control instruction to the stepping motor controller, and the stepping motor controller stops the stepping motor through the stepping motor driver.
In this embodiment, the material fixing clamp is used for fixing the test product, namely the connector pin, and is controlled by the elevating platform.
Specifically, referring to fig. 2, the specific operation of the device for testing solder resistance of the connector pins is as follows:
after the system is electrified, whether the distance between the positioning plates is detected by the ultrasonic sensor is an initial position or not, if not, the microprocessor controls the stepping motor controller to drive the stepping motor driver to act, the stepping motor drives the screw rod to act under the driving of the stepping motor driver, the positioning plates are adjusted to the default initial position, and a user can select a set material scheme to call the initial position through the touch display screen, so that the initial position is adjusted up and down. After the initial position is adjusted, a user sets a sinking distance and tin immersion time in the touch display screen through appearance structures of different products, then clicks a start button to test, a stepping motor driver drives a stepping motor to act after receiving a signal of a stepping motor controller, a lead screw is driven to rotate, a lifting platform is driven to move downwards, and meanwhile, an ultrasonic sensor continuously detects whether the descending distance reaches the set sinking distance or not and feeds the descending distance back to a microprocessor; and the microprocessor synchronizes the sinking distance on the screen of the touch display screen. When the sinking distance reaches a set value, the microprocessor indirectly controls the stepping motor driver to drive the stepping motor to drive the screw rod to stop acting, at the moment, the test product on the material fixing clamp is completely immersed in the tin furnace, the soldering resistance of the test product is started, the tin immersion time is counted down, and the tin immersion time is synchronously displayed on the touch display screen in a count-down mode. When the tin immersion time reaches a set value, the microprocessor indirectly controls the stepping motor driver to drive the stepping motor to drive the screw rod to move, so that the lifting platform is driven to move upwards to return to the initial height, and the whole testing process is completed.
When the material fixing device in the lifting platform exceeds the first limit switch or the second limit switch, the first limit switch or the second limit switch inputs a level signal to the microprocessor, and the microprocessor detects the level change and sends a control instruction to the stepping motor controller to enable the stepping motor to control the screw rod to stop acting.
Connector pin resistance to weld verifying attachment have following technological effect:
the utility model connects the lead screw of the lifting platform with the stepping motor, so that the lead screw can be controlled by the stepping motor to drive the lifting platform to move up and down, and the distance from the lifting platform to the positioning plate is detected through the ultrasonic module, thereby precisely controlling the lifting distance; material fixation clamp and ultrasonic sensor set up in the parallel top of locating plate, and the locating plate sets up the parallel top at the tin stove again, and ultrasonic sensor is connected with the controller, can detect the distance of material fixation clamp to the locating plate, and then accurately control the distance of going up and down, the operator of being convenient for fixes the measured material in appointed position, and accurately dip the appointed wicking height in the tin stove to the connector pin, thereby test connector pin solderability accurately.
While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are included in the scope of the present invention defined by the claims.
Claims (6)
1. A device for testing the soldering resistance of a connector pin is characterized by comprising a tin furnace, a positioning plate, a lifting platform and a controller; the positioning plate is positioned above the tin furnace in parallel, and the tin furnace, the lifting platform and the controller are horizontally placed on the same plane;
the top of the lifting platform is provided with a stepping motor, and the lifting platform comprises a screw rod, a first limit switch, a second limit switch, a material fixing device and two vertical supports which are parallel to each other; the screw rod is arranged between the two parallel vertical supports, the first limit switch and the second limit switch are arranged on the vertical supports in parallel at a certain interval, the material fixing device is arranged on the vertical supports and is positioned between the first limit switch and the second limit switch, and the material fixing device is positioned above the positioning plate in parallel;
the material fixing device is provided with a material fixing clamp and an ultrasonic sensor, and the material fixing clamp and the ultrasonic sensor are both positioned above the positioning plate in parallel;
the lead screw with step motor is connected, step motor with ultrasonic sensor all with the controller is connected.
2. The device for testing solder resistance of a connector pin according to claim 1, wherein the controller comprises a microprocessor, and the first limit switch and the second limit switch are connected with the microprocessor.
3. The device for testing solder resistance of a connector pin according to claim 2, wherein the microprocessor is connected to the ultrasonic sensor.
4. The device for inspecting solder resistance of connector pins according to claim 2, wherein the controller further comprises a stepper motor controller, and the stepper motor controller is connected to the microprocessor.
5. The device for inspecting solder resistance of connector pins according to claim 4, wherein the controller further comprises a stepper motor driver, and the stepper motor driver is connected with the stepper motor controller.
6. The device for inspecting solder resistance of connector pins according to claim 5, wherein the stepper motor driver is connected to the stepper motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120844000.5U CN215066631U (en) | 2021-04-23 | 2021-04-23 | Testing device for welding resistance of connector pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120844000.5U CN215066631U (en) | 2021-04-23 | 2021-04-23 | Testing device for welding resistance of connector pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215066631U true CN215066631U (en) | 2021-12-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120844000.5U Active CN215066631U (en) | 2021-04-23 | 2021-04-23 | Testing device for welding resistance of connector pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215066631U (en) |
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2021
- 2021-04-23 CN CN202120844000.5U patent/CN215066631U/en active Active
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