CN202171571U - Automatic detection device for printing steel mesh - Google Patents

Abstract

The utility model discloses a printing steel mesh automatic checkout device, including being used for placing the brace table that waits to detect the printing steel mesh, still include a rectangular support that is greater than the brace table, this support cover is established in the brace table outside, is equipped with on this support and can follows the linkage lead screw device that the three coordinate axis of space rectangular coordinate system is linear motion, is equipped with the working head on this linkage lead screw device, is equipped with the sensor that is used for detecting the printing steel mesh on this working head, still is equipped with the fine setting lead screw device that is located this brace table lower part on this support. The utility model discloses regard as detection instrument with pressure sensor, tensiometer, industrial camera, detect steel mesh thickness, steel mesh tension, steel mesh open-ended form and position precision, degree of automation is high, and the testing result is accurate.

Description

Printing stencil automatic detection device

technical field

The utility model relates to the technical field of automatic detection, in particular to an automatic detection device for detecting the thickness, tension and shape and position accuracy of a printing steel mesh.

Background technique

The electronic assembly manufacturing industry has become a very important part of the modern manufacturing industry, and the assembly and processing of circuit boards (PCBA) is a crucial link in the electronic manufacturing industry. As the core technology of circuit board assembly and processing, SMT (Surface Mount Technology) is currently developing rapidly in the direction of miniaturization of parts, increasing area density, and continuous improvement of mounting accuracy, so as to meet the needs of miniaturization, high frequency, and high precision of electronic products. transfer rate requirements. Correspondingly, the requirements for the solder paste printing process in SMT processing are becoming increasingly stringent, and higher requirements are also put forward for the quality control of Stencil (stencil for solder paste printing), a key tool for solder paste printing. According to the general level of the industry, when dealing with the printing of small and precise parts, about 90% of the assembly quality problems are related to the printing process, and the quality of the printing stencil is out of control is an important factor. The key technical parameters of printing stencils include: stencil thickness, stencil tension, shape accuracy and position accuracy of stencil openings. For these key points of quality that need to be controlled, the industry has not had an effective method for inspection and monitoring. Various processing factories generally use simple measuring tools to measure the thickness and tension of the steel mesh, which has low measurement accuracy and poor repeatability; for the opening shape, position accuracy, opening area, etc. of the steel mesh, it can only be visually inspected with the naked eye or a magnifying glass, and cannot be accurately judged Whether there is a quality problem, let alone quantify the severity of the problem.

Utility model content

The utility model provides an automatic detection device for a printing steel mesh, which uses a pressure sensor, a tensiometer, and an industrial camera as detection tools to detect the thickness of the steel mesh, the tension of the steel mesh, and the shape and position accuracy of the opening of the steel mesh, with a high degree of automation. The test results are accurate.

The utility model adopts the following technical solutions to achieve the above object: an automatic detection device for printed steel mesh, including a support platform for placing the printed steel mesh to be detected, and a rectangular support larger than the support platform, the support cover is set on Outside the support table, a linkage screw device that can move linearly along the three coordinate axes of the space Cartesian coordinate system is provided on the bracket. The linkage screw device is equipped with a working head, and a working head is installed on the working head for testing printing. The sensor of the steel mesh is also provided with a fine-tuning screw device located at the lower part of the support table on the support.

As a further illustration of the above scenario:

Preferably, the linkage screw device includes a horizontal axis screw, a vertical axis screw, a vertical axis screw and a slide rail device, and the horizontal axis screw, the vertical axis screw and the vertical axis screw each include a servo motor and The transmission lead screw driven by the servo motor, the slide rail device includes two first slide rails parallel to each other and a slide table matched with the first slide rails, the longitudinal axis screw is parallel to the first slide rails and The sliding table screw is connected by transmission. The horizontal axis screw is arranged on the sliding table and is perpendicular to the vertical axis screw. The sliding table is provided with a second slide rail and a slider matched with the second slide rail. The horizontal axis lead screw is in transmission connection with the slider lead screw, the vertical axis lead screw is fixed on the slider along the vertical direction, and the working head is connected to the vertical axis lead screw.

Preferably, the sensor includes an industrial camera for detecting the shape and position accuracy of the opening of the printing stencil.

Preferably, the sensor includes a digital thickness gauge for detecting the thickness of the printing stencil.

Preferably, the sensor includes a digital tension gauge for detecting the tension of the printing stencil.

Preferably, the fine-tuning lead screw device includes a servo motor and a drive lead screw driven by the servo motor, the drive lead screw is parallel to the horizontal axis lead screw, and the drive lead screw is threadedly connected to the support table.

The beneficial effects that the utility model can achieve by adopting the above technical scheme are: the printing steel mesh detection device described in the utility model is provided with a detection working head driven by a linkage screw device, and an industrial camera is arranged on the working head , digital display micrometer thickness gauge, digital display tensiometer and other sensors can accurately obtain information such as the thickness, tension and shape and position accuracy of the printing stencil, which not only has a high degree of automation, simple and convenient operation, but also high detection accuracy. The detection efficiency of the printing stencil is greatly improved.

Description of drawings

Fig. 1 is the structural representation of automatic detection device described in the utility model;

Fig. 2 is a schematic side view of the automatic detection device of the present invention.

Explanation of reference signs:

1-support table, 2-bracket, 3-horizontal axis screw, 4-longitudinal axis screw, 5-vertical axis screw, 6-fine-tuning screw device, 7-slider, 8-first slide rail, 9 -working head, 10-industrial camera, 11-digital tension gauge, 12-digital thickness gauge, 13-printing stencil, 14-second slide rail.

Detailed ways

In order to further illustrate the structure and function of the utility model, the utility model will be described in detail below in conjunction with the accompanying drawings and preferred embodiments, but it should be understood that the protection scope of the utility model is not limited by specific embodiments.

Fig. 1 and Fig. 2 are respectively the three-dimensional structure schematic diagram and the side view schematic diagram of the automatic detection device described in the utility model, as shown in the figure, this automatic detection device comprises the supporting platform 1 that is used to place the printing steel net 13 to be detected, also It includes a rectangular support 2 that is larger than the support platform 1. The support platform 2 is covered outside the support platform 1. A linkage screw device that can move linearly along the three coordinate axes of the space Cartesian coordinate system is provided on the support platform 2. The linkage The lead screw device is provided with a working head 9, on which a sensor for detecting the printing stencil 13 is arranged, and on the support 2, a fine-tuning lead screw device 6 positioned at the bottom of the support table 1 is also provided. The linkage screw device includes a horizontal axis screw 3, a vertical axis screw 4, a vertical axis screw 5 and a slide rail device, and the horizontal axis screw 3, the vertical axis screw 4 and the vertical axis screw 5 all include servo motors As well as the transmission lead screw driven by the servo motor, the slide rail device includes two first slide rails 8 parallel to each other and a slide table 7 matched with the first slide rail 8, the longitudinal axis screw 4 and the first slide rail 8 Slide rail 8 is parallel and is connected with slide table 7 lead screw transmission, and this horizontal axis lead screw 3 is arranged on this slide table 7 and is vertical with vertical axis lead screw 4, and this slide table 7 is provided with second slide rail 14 and The slider that cooperates with the second slide rail 14, the horizontal axis screw 3 is connected to the slider screw, the vertical axis screw 5 is fixed on the slider in the vertical direction, and the working head 9 is connected to On this vertical axis leading screw 5. The sensor includes an industrial camera 10 for detecting the shape and position accuracy of the opening of the printing stencil 13, a digital thickness gauge 12 for detecting the thickness of the printing stencil 13, and a digital display tensiometer for detecting the tension of the printing stencil 13 11. The fine-tuning lead screw device 6 includes a servo motor and a drive lead screw driven by the servo motor. The drive lead screw is parallel to the horizontal axis lead screw 3 , and the drive lead screw is threadedly connected to the support table 1 .

The operating principle of the automatic detection device described in the utility model is as follows:

Put the printing stencil 13 on the support table 1 and fix it, select the detection point, and drive the working head 9 to the Above the monitoring point, the industrial camera 10 starts to accurately obtain the shape, area, relative position and other data of the opening of the printing stencil 13 through photographing and image processing and compares it with the standard data in the system to check out the damage of the opening of the stencil, For quality problems such as deformation, deviation, and abnormal size, in the judgment of the opening of the printing stencil 13, the data imported by the system can be various CAD (computer-aided design) and CAM (computer-aided manufacturing) data of the stencil design, ensuring that the data Reliable and versatile. After the result is obtained, the vertical axis screw 5 drives the working head 9 close to the printing stencil 13, so that the digital display micrometer thickness gauge 12 touches the surface of the printing stencil 13 and feeds back the signal. The height of the reference block and the calculated surface height of the printing stencil 13, thereby obtaining the thickness data of the printing stencil 13, and then the linkage screw device drives the working head 9 to the detection point for detecting the tension of the stencil, and the vertical axis screw 5 Drive the working head 9 and the digital display tensiometer 11 to move downward and preload, and the tension of the printing steel mesh 13 can be read from the digital display tensiometer 11 .

The above-mentioned embodiments of the utility model and shown in the accompanying drawings are only one of the preferred embodiments of the utility model, and the utility model can not be limited with this, as the sensor on the working head 9 can be one or several of the above-mentioned embodiments Under the condition of not departing from the essence of the utility model, any changes made by those skilled in the art all belong to the protection scope of the utility model.

Claims (6)

1. printed steel mesh automatic detection device; Include the brace table that is used to place printed steel mesh to be detected; It is characterized in that also comprise a rectangle support greater than brace table, this support is located at the brace table outside; On this support, be provided with and do straight-line interlock feed screw apparatus along three coordinate axis of rectangular coordinate system in space; This interlock feed screw apparatus is provided with working head, on this working head, is provided with the sensor that is used to detect printed steel mesh, on this support, also is provided with the fine setting feed screw apparatus that is positioned at this brace table bottom.

2. printed steel mesh automatic detection device according to claim 1; It is characterized in that; Said interlock feed screw apparatus comprises transverse axis leading screw, longitudinal axis leading screw, vertical pivot leading screw and railroad, and this transverse axis leading screw, longitudinal axis leading screw and vertical pivot leading screw include servomotor and by the turn-screw of this driven by servomotor, this railroad comprises first slide rail that twice are parallel to each other and the slide unit that cooperates with this first slide rail; This longitudinal axis leading screw is parallel with this first slide rail and be connected with the slide unit lead screw transmission; This transverse axis leading screw is arranged on this slide unit and is vertical with longitudinal axis leading screw, the slide block that on this slide unit, is provided with second slide rail and cooperates with this second slide rail, and this transverse axis leading screw is connected with this slide block lead screw transmission; This vertical pivot leading screw vertically is fixed on this slide block, and said working head is connected on this vertical pivot leading screw.

3. printed steel mesh automatic detection device according to claim 2 is characterized in that, said sensor comprises the industrial camera that is useful on the accuracy of form and position that detects printed steel mesh opening.

4. according to claim 2 or 3 described printed steel mesh automatic detection devices, it is characterized in that said sensor comprises the thousand fens thicknessmeters of digital display that are useful on detection printed steel mesh thickness.

5. printed steel mesh automatic detection device according to claim 4 is characterized in that, said sensor comprises the digital display tensiometer that is useful on detection printed steel mesh tension force.

6. printed steel mesh automatic detection device according to claim 1 and 2; It is characterized in that; Said fine setting feed screw apparatus includes servomotor and by the turn-screw of this driven by servomotor, this turn-screw is parallel with the transverse axis leading screw, and this turn-screw and brace table screw thread are in transmission connection.

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