TWM260733U - Inspecting apparatus for printing circuit board - Google Patents

Description

M260733 4. Creation Description (1) [Technical Field to which the New Type belongs] This creation relates to the improvement of the detection device used to detect the overlap of printed circuit boards in printed circuit board processing equipment. Printed circuit board testing device with simple structure, high accuracy, low failure rate and convenient maintenance. [Previous technology] According to the process of general printed circuit board processing, in order to meet the feeding needs of processing capacity, it is often necessary to stack unprocessed printed circuit boards or semi-finished printed circuit boards that have completed some processing procedures. Store in large quantities, and then put the printed circuit boards into the conveyors of subsequent processing equipment one by one with related automatic feeding equipment to meet the needs of automated processing operations. Because printed circuit boards are placed in stacks before being fed into processing equipment, in actual automated feeding operations, two (or more) printed circuit boards that overlap at the same time often occur on the conveyor. Among them, it is not only impossible to complete the due processing procedures for the overlapping printed circuit boards, but also may cause the subsequent related equipment to be damaged. Therefore, in the printed circuit board processing equipment, it is necessary to cooperate with the relevant detection device to check whether the printed circuit boards are overlapped, so that when the printed circuit boards are overlapped, they can immediately order the machine to stop operation or perform related operations. Protection instructions to avoid damage to subsequent processing equipment. As shown in the first figure, it is a printed circuit board commonly used in the industry.

M260733 IV. Creation instructions (2) One of the detection devices. The detection device is fixed with an induction coil 2 1 above the conveying platform 11 of the printed circuit board. The induction coil 2 1 is connected to a controller 12 for signal connection. The sensor coil 2 1 is provided with a corresponding displacement sensor 2 2, and the sensor 2 2 is fixed to one end of a link arm 2 3, and the link arm 2 3 passes through the support rod 2 4 The shaft is arranged at the plate body 13 on one side of the conveying platform 1 1, and the connecting arm 2 3 is corresponding to the sensor 2 2 and the other end is provided with a contact roller 1 4, and the conveying platform 11 is provided with The conveying roller 15 is used for conveying the printed circuit board 40.

At the time of implementation, the clearance between the conveying roller 15 and the contact roller 14 is the detection height that can be passed by the tested printed circuit board 40, that is, a single printed circuit board passes between the conveying roller 15 and the contact roller 14 At this time, it is not necessary to touch the linkage arm 2 3, so that the overall processing equipment can maintain normal operation; on the contrary, when the printed electrical board between the conveying roller 15 and the contact roller 14 is two (or more than two) As shown in the second figure, the linking arm 23 will be lifted by one end of the contact roller 1 4 and swing with the support rod 2 4 as the mandrel, and let the induction corresponding to the other end of the contact roller 1 4 The relative displacement of the device 2 2 and the induction coil 21 1 sends a signal to the controller 12 to immediately instruct the controller 12 to stop the machine or execute related protective instructions.

However, the conventional detection device uses a magnetic effect to sense the operation state of the sensor. Its sensitivity is less than expected, and it must be supported by the support rod 2 4 to make the linkage arm 2 3 actually move and amplify the induction Device 2 2 displacement, so will not only make the overall detection device knot

Page 6 M260733 4. Creation Instructions (3) The composition of the structure tends to be complicated and cumbersome, and it also increases the difficulty of maintenance. [New content] This article "Printed Circuit Board Detection Device" is mainly equipped with a decoder fixed above the conveying platform corresponding to the printed circuit board, and another extension rod is directly connected to the mandrel of the decoder. The rear end of the extension rod extends obliquely toward the direction in which the printed circuit board enters the conveying platform, and at the end of the extension rod is provided with at least one contact roller, and the gap between the wheel surface of the contact roller and the conveyor equipped on the conveying platform It is the test south degree that can pass the printed circuit board under test. According to this, when the printed circuit board passing the contact roller exceeds the detection south due to overlap, the core of the decoder rotates because of the surface of the extension end of the extension rod, and sends a signal to the controller to make the controller command the machine. Stop operation or implement relevant protective instructions to avoid damage to subsequent processing equipment. In particular, the extension rod in this creation can drive the mandrel of the decoder to rotate without the support or connection of other components, and the signal output of the decoder is more accurate than that of traditional coils. Compared with conventional devices, this creation It also has the simplification of structure, high accuracy, low failure rate, and convenient maintenance. [Implementation] In order to make your reviewing committee clear about the structure and composition of this creation, as well as the overall operation mode, the following description with drawings is provided:

M260733 IV. Creation Instructions (4) The creation of the "detection device for printed circuit boards", the basic structure of the overall detection device is shown in the third figure, above the conveying platform 1 1 corresponding to the printed circuit board 40 A decoder 30 is fixed at the place, and another extension rod 3 2 is directly fixed to the mandrel 3 1 of the decoder 33, and the tail end of the extension rod 3 2 is inclined to the printed circuit board 40 and enters the conveying platform. 11 in the direction of extension, and at the end of the extension rod 32 is provided with at least one contact roller 14, the gap between the wheel surface of the contact roller 14 and the conveyor arranged on the conveying platform 11 is just acceptable. The detection degree of the printed circuit board 40 passing the inspection. In this embodiment, a plate body 1 3 is directly provided on one side of the conveyance platform 11, and the controller 12 and the decoder 30 thereof are fixed on the plate body 13; as for the conveyance of the printed circuit board The machine tool is a conveying roller 15 arranged on the conveying platform 11 and is conveyed by the rolling action of the conveying roller 15 to carry the printed circuit board 40. Therefore, the clearance between the conveying roller 15 and the contact roller 14 is It can be used to detect the south of the printed circuit board 40. According to this, when the preset printed circuit board is passed between the conveying roller 15 and the contact roller 14, the height of the contact roller 14 and the extension rod 3 2 is raised, and the raised height is set to a set value. And stored in the controller 12 and the decoder 30; when a single printed circuit board passes between the conveying roller 15 and the contact roller 14, the height of the single printed circuit board touching the extension rod 32 does not exceed The range of the setting value can maintain the normal operation of the overall processing equipment. Conversely, when the printed circuit board 40 passing the contact roller exceeds the detection height setting range due to overlap

M260733 4. In the description of creation (5), as shown in the third and fourth figures, the mandrel 3 1 of the decoder 30 is rotated by the end of the extension rod 32, and the controller 1 '2 sends a signal to the controller 12 to order the machine to stop operation or execute relevant protective instructions to avoid damage to subsequent processing equipment. Furthermore, the plate body 13 may be additionally provided with a pressing device 50. As shown in the fourth figure, a fixing plate 5 1 is fixed on the plate body 13 and an elastic element is connected below the fixing plate. 5 2 (may be a spring), and the bottom end of the elastic element 5 2 is a pressure plate 5 3, which can press the printed circuit board 4 0 passed by the elastic force of the elastic element 5 2 and the pressure plate 5 3 to achieve printing. The function of leveling the circuit board 40 and preventing the printed circuit board 40 from being lifted up. It is worth mentioning that the signal transmitted by the decoder 30 using the mandrel 31 is more sensitive and accurate than the induction coil, and the extension rod 3 2 can drive the decoder without the support or connection of other components. The rotation of the mandrel of 3 0 3 1 can effectively simplify the structure of the overall detection device and reduce the configuration space of related components. As mentioned above, this creation provides another better and feasible detection device for printed circuit board processing equipment to avoid damage to subsequent processing equipment due to overlapping printed circuit boards. Compared with the conventional detection device, this creation has more Simplified structure, high accuracy, low failure rate, and convenient maintenance, have submitted new patent applications in accordance with the law; however, the above implementation description and diagrams are for the preferred embodiment of this creation, and are not based on this. The limitation of this creation is that all similarities and similarities in the structure, installation, features, etc. of this creation shall belong to the purpose of creation and patent application of this creation

M260733

Page ίο M260733 Simple description of the drawings [Simplified illustration of the drawings] The first figure is a perspective view of the external structure of a conventional detection device. The second figure is a schematic diagram of the operation of the conventional detection device. The third figure is a perspective view of the appearance structure of the detection device of the creation. The fourth figure is a schematic diagram of the operation of the detection device of the creation. [Description of Symbols of Components] L 1 · · · Conveying Platform

2 43 0

4 0

Controller Board Contact Wave Wheel Conveyor Roller Induction Coil Inductor Link Arm Arm Decoder Mandrel Extension Rod Printed Circuit Board Compression Device Fixed Plate Elastic Element Press Plate

Claims (1)

M260733 V. Application for Patent Scope 1. A testing device for printed circuit boards. The testing device includes: a decoder at the top of the conveying platform corresponding to the printed circuit board and forming a signal connection with the controller; An extension rod is fixedly connected to the mandrel of the decoder. Its tail end extends obliquely to the direction in which the printed circuit board enters the conveying platform. The tail end is provided with at least one contact roller, and the contact surface of the roller The clearance between the conveyor and the conveying platform is the detection height that can be passed by the printed circuit board to be inspected; 俾 It constitutes a mandrel that rotates with the tail end of the extension rod and rotates to the controller. A signal is sent to judge the detection device of the printed circuit board overlapping by the contact roller. 2. The testing device for a printed circuit board as described in item 1 of the scope of the patent application, wherein the conveying platform is provided with at least one conveying roller, and the gap between the conveying roller and the contact roller is just enough for the printed circuit board to pass Its detection height. 3. The testing device for a printed circuit board as described in item 1 of the scope of patent application, wherein one side of the conveying platform is directly provided with a board body, and the controller and the decoder are fixed on the board body. Page 12