Measuring mechanism for automatically measuring height of UV glue

Abstract

The utility model relates to the field of measuring mechanisms, and particularly discloses a measuring mechanism for automatically measuring the height of UV glue, which comprises a main control computer, a conveying belt, a mounting bracket, an infrared sensor, a lifting mechanism and a digital display meter, the digital display meter comprises a telescopic measuring rod, and the lifting mechanism drives the digital display meter to lift. The measuring mechanism realizes automation, and the detection efficiency is high; after the lifting mechanism falls down, the measuring rod of the digital display measuring tool has a large lifting allowance, so that the error of the reciprocating motion of the lifting mechanism can be counteracted. When the measuring mechanism is installed, a corner connector used for hanging a digital display meter and a clamp used for clamping a pcb are designed. During specific measurement, the bottom of the measuring rod falls to the side of the uv glue coating position in advance, the spare position of the pcb is selected as a reference surface, when the pcb continues to advance, the uv glue coating position starts to support the measuring rod, then the measuring rod falls back, and the height of the uv glue coating position corresponding to the difference value of two height data is displayed.

Description

Technical Field

[0001] The utility model belongs to the field of measuring mechanisms, in particular to a measuring mechanism for automatically measuring the height of UV glue. Background Art

[0002] In order to ensure the performance of the product, after the PCB board is welded, UV glue needs to be sprayed on the solder joints. The role of UV glue is to protect the solder joints, prevent the solder joints from falling off, increase the tensile strength of the solder joints, prevent the solder joints from connecting with the shielding shell and causing a short circuit, and increase the service life of the corresponding product. Therefore, the coverage thickness of UV glue is particularly important. Due to the error of the spraying process, the amount of glue sprayed is more or less. Too little will affect the electrical performance and tensile performance, and too much will cause assembly interference in the next process of assembling the shell. Therefore, the height of the UV glue on the PCB will be fully inspected on the production line.

[0003] Common measurement methods include manual measurement using go gauges, stop gauges, and micrometers, but manual measurement is inefficient. In order to improve measurement efficiency, automatic measurement equipment can only be introduced or developed. Utility Model Content

[0004] The utility model aims to provide a convenient measuring mechanism for automatically measuring the height of UV glue.

[0005] To achieve the above-mentioned purpose, the utility model provides a measuring mechanism for automatically measuring the height of UV glue, comprising: a main control machine, a conveyor belt for transmitting a clamp and a mounting bracket located on the side of the conveyor belt, the mounting bracket is provided with an infrared sensor for judging the position reached by the clamp, the mounting bracket is provided with a lifting mechanism, the movable end of the lifting mechanism is provided with a digital display scale, the digital display scale comprises a single-chip microcomputer, a data transmission interface, an interactive button, a grating sensor, a measuring rod that can be lifted up and down, and a reset spring, the digital display scale is electrically connected to the main control machine, when the clamp carrying the PCB to be detected arrives at the specified position, the lifting mechanism drives the digital display scale to descend, the measuring rod is adaptively lifted and lowered while the lower end is against the UV glue coating position of the PCB, and the digital display scale transmits the measurement data to the main control machine.

[0006] As an improvement of the above-mentioned solution, a display screen and an alarm are provided on the front of the mounting bracket. The display screen is used to display the height obtained by the digital display scale. The display screen and the alarm are electrically connected to the main control machine. When the height detected by the digital display scale exceeds a set threshold, the alarm emits a sound or light alarm.

[0007] As an improvement of the above scheme, a pair of side guides for guiding the clamp to the center is arranged on the conveyor belt, and the two side guides are arranged in parallel. The same ends of the two side guides are separated from each other to form an entrance and exit that is wide outside and narrow inside, and the upper edge of the side guide is lower than the upper edge of the clamp, so that the upper edge of the clamp can be recognized by the infrared sensor.

[0008] As an improvement of the above solution, a roller is provided at the bottom of the measuring rod. When the measuring rod abuts against the UV glue coating position of the PCB, the roller rotates along with the movement of the PCB.

[0009] As an improvement of the above solution, the lifting mechanism is a gas rod, the fixed part of the gas rod is located inside the mounting bracket, and the movable part of the gas rod is located outside the mounting bracket.

[0010] As an improvement of the above solution, a foot switch is provided at the bottom of the mounting bracket, and the foot switch is electrically connected to the main control machine.

[0011] The utility model has the following beneficial effects: workers only need to put the PCB into the fixture, and then transfer the fixture to the conveyor belt, the measuring mechanism is automated, and the detection efficiency is high. After the lifting mechanism falls, the measuring rod of the digital measuring tool still has a large margin for lifting and lowering, which can offset the error of the reciprocating motion of the lifting mechanism. When installing the measuring mechanism, it is sufficient to design the angle code for hanging the digital display scale and the fixture for clamping the PCB; during the specific measurement, the bottom of the measuring rod falls in advance to the side of the UV glue coating position, and the free position of the PCB is selected as the reference surface. When the PCB continues to move forward, the UV glue coating position begins to lift the measuring rod, and then the measuring rod falls back, and the difference between the two height data displayed corresponds to the height of the UV glue coating position. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a stereogram of a measuring mechanism under an embodiment.

[0013] Explanation of the reference numerals: 11. mounting bracket; 12. display screen; 13. alarm; 14. lifting mechanism; 21. digital display scale; 22. measuring rod; 31. infrared sensor; 32. conveyor belt; 33. clamp; 34. side guide rail. DETAILED DESCRIPTION

[0014] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "top", "bottom", "top surface", "bottom surface", "inside", "outside", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0015] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If the terms "first", "second", "third" are described, they are only used for the purpose of description and distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0016] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is a description of the embodiments of the present invention based on its overall structure.

[0017] Reference Figure 1 The utility model discloses a measuring mechanism for automatically measuring the height of UV glue, comprising: a main control machine, a conveyor belt 32 for transmitting a clamp 33, and a mounting bracket 11 located on the side of the conveyor belt 32, wherein the mounting bracket 11 is provided with an infrared sensor 31 for judging the position reached by the clamp 33, and the mounting bracket 11 is provided with a lifting mechanism 14, and a digital display scale 21 is provided at the movable end of the lifting mechanism 14. The digital display scale 21 comprises a single-chip microcomputer, a data transmission interface, an interactive button, a grating sensor, a measuring rod 22 that can be lifted up and down, and a reset spring, and the digital display scale 21 is electrically connected to the main control machine. When the clamp 33 carrying the PCB to be detected arrives at the designated position, the lifting mechanism 14 drives the digital display scale 21 to descend, the measuring rod 22 is adaptively lifted and lowered while the lower end is against the UV glue coating position of the PCB, and the digital display scale 21 transmits the measurement data to the main control machine.

[0018] The worker only needs to put the PCB into the fixture 33 and then transfer the fixture 33 to the conveyor belt 32. The measuring mechanism is automated and the detection efficiency is high. After the lifting mechanism 14 falls, the measuring rod 22 of the digital measuring tool still has a large margin for lifting and lowering, which can offset the error of the reciprocating motion of the lifting mechanism 14.

[0019] When installing the measuring mechanism, the digital display scale 21 can be purchased directly on the market, and the angle code for hanging the digital display scale 21 and the clamp 33 for clamping the PCB can be designed. During the specific measurement, the bottom of the measuring rod 22 falls to the side of the UV glue coating position in advance, and the free position of the PCB is selected as the reference surface. When the PCB continues to move forward, the UV glue coating position begins to lift the measuring rod 22. When the PCB leaves the bottom of the measuring rod 22, the measuring rod 22 falls back and the lifting mechanism 14 rises. The difference between the two height data in a short time corresponds to the height of the UV glue coating position, and there is no need to repeatedly zero and calibrate the reference point of the digital display scale 21.

[0020] As an improvement of the above solution, a display screen 12 and an alarm 13 are provided on the front of the mounting bracket 11, and an interactive button is provided next to the display screen 12. The display screen 12 is used to display the height obtained by the digital display scale 21. The display screen 12 and the alarm 13 are both electrically connected to the main control machine. When the height detected by the digital display scale 21 exceeds a set threshold, the alarm 13 emits a sound or light alarm.

[0021] As an improvement of the above solution, a pair of side guide rails 34 for guiding the clamp 33 to be centered are provided on the conveyor belt 32. The two side guide rails 34 are arranged in parallel. The same ends of the two side guide rails 34 are separated from each other to form an inlet and outlet that is wide outside and narrow inside, which plays a better guiding role. The upper edge of the side guide rail 34 is lower than the upper edge of the clamp 33, so that the upper edge of the clamp 33 can be recognized by the infrared sensor 31. When the infrared sensor 31 recognizes that the clamp 33 carrying the PCB has moved into place, the lifting mechanism 14 puts down the digital display meter 21.

[0022] As an improvement of the above solution, a roller is provided at the bottom of the measuring rod 22. When the measuring rod 22 abuts against the UV glue coating position of the PCB, the roller rotates along with the movement of the PCB, which can be understood as the roller rolling over the UV glue coating position.

[0023] As an improvement of the above solution, the lifting mechanism 14 is a gas rod, the fixed part of the gas rod is located inside the mounting bracket 11, and the movable part of the gas rod is located outside the mounting bracket 11. In this solution, the lifting mechanism 14 only needs to be lifted to two extreme positions, and the use of gas rods can greatly reduce manufacturing costs.

[0024] As an improvement of the above solution, a foot switch is provided at the bottom of the mounting bracket 11, and the foot switch is electrically connected to the main control machine.

[0025] The foregoing description of specific exemplary embodiments of the utility model is for the purpose of illustration and illustration. These descriptions are not intended to limit the utility model to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the utility model and various different options and changes. The scope of the utility model is intended to be defined by the claims and their equivalents.

Claims

1. A measuring mechanism for automatically measuring the height of UV glue, characterized in that: include: A main control machine, a conveyor belt for transmitting the clamp and a mounting bracket located on the side of the conveyor belt, the mounting bracket is provided with an infrared sensor for judging the position reached by the clamp, the mounting bracket is provided with a lifting mechanism, the movable end of the lifting mechanism is provided with a digital display scale, the digital display scale includes a single-chip microcomputer, a data transmission interface, an interactive button, a grating sensor, a measuring rod that can be lifted up and down and a reset spring, the digital display scale is electrically connected to the main control machine, when the clamp carrying the PCB to be detected arrives at the specified position, the lifting mechanism drives the digital display scale to descend, the measuring rod is adaptively lifted and lowered while the lower end is against the UV glue coating position of the PCB, and the digital display scale transmits the measurement data to the main control machine.

2. The measuring mechanism for automatically measuring the height of UV glue according to claim 1, characterized in that: A display screen and an alarm are provided on the front of the mounting bracket. The display screen is used to display the height obtained by the digital display scale. The display screen and the alarm are electrically connected to the main control machine. When the height detected by the digital display scale exceeds a set threshold, the alarm emits a sound or light alarm.

3. The measuring mechanism for automatically measuring the height of UV glue according to claim 2, characterized in that: The conveyor belt is provided with a pair of side guide rails for guiding the clamp to be centered, the two side guide rails are arranged in parallel, and the same ends of the two side guide rails are separated from each other to form an inlet and outlet that is wide outside and narrow inside, and the upper edge of the side guide rail is lower than the upper edge of the clamp, so that the upper edge of the clamp can be identified by the infrared sensor.

4. The measuring mechanism for automatically measuring the height of UV glue according to claim 3 is characterized in that: A roller is arranged at the bottom of the measuring rod. When the measuring rod contacts the UV glue coating position of the PCB, the roller rotates along with the movement of the PCB.

5. The measuring mechanism for automatically measuring the height of UV glue according to claim 1, characterized in that: The lifting mechanism is a gas rod, the fixed part of the gas rod is located inside the mounting bracket, and the movable part of the gas rod is located outside the mounting bracket.

6. The measuring mechanism for automatically measuring the height of UV glue according to claim 1, characterized in that: A foot switch is arranged at the bottom of the mounting bracket, and the foot switch is electrically connected to the main control machine.

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