A PCB board fixture

Abstract

The utility model discloses a PCB board jig, which belongs to the technical field of jigs, and solves the problem that the existing jig is not convenient for a processing device to judge whether there is a PCB board on it because there is no detection hole on the end surface; it includes a jig body, the jig body includes a U-shaped plate and a support plate, a plurality of limit protrusions are arranged on the support plate, the plurality of limit protrusions are used to support the PCB board, and the accommodating groove formed by the plurality of limit protrusions on the support plate is used to accommodate a plurality of components on the PCB board; at least one detection hole for allowing the optical signal of an external sensor to pass vertically is arranged on the bottom surface of the support plate and the U-shaped plate. The plurality of limit protrusions on the support plate of the utility model avoid the components on the PCB board to support the PCB board, so that the PCB board can be just stuck on the plurality of limit protrusions, which plays a role of positioning and supporting; at the same time, the setting of the detection hole can allow the optical signal of the sensor of the processing device to pass through, so as to facilitate the external processing device to judge whether there is a PCB board on the jig.

Description

Technical Field

[0001] The utility model relates to the technical field of jigs, and in particular to a PCB board jig. Background Art

[0002] PCB, or printed circuit board, is the support for components and is the carrier for electrical connections of components. Usually, when the thickness of the circuit board is ≥1mm, the carrier can be eliminated to save the carrier cost and avoid efficiency problems caused by insufficient number of carriers. For double-sided SMD circuit boards, after the SMD on the first side is completed, the solder paste printing of the second side of the circuit board is carried out. In the absence of a printing carrier, a printing support fixture is required to support the circuit board to ensure the flatness of the circuit board, thereby ensuring the printing quality.

[0003] In the prior art, ejectors are often used to support PCB boards. For example, a method and a device for positioning ejectors for printed circuit boards are disclosed in the publication number CN109661110B. The ejectors are placed above the sample to facilitate the operation of production personnel. At the same time, the ejectors can be accurately positioned to prevent the ejectors from damaging the mounted components on the circuit board. In the prior art, PCB boards are also supported by protrusions, and components on the circuit board are prevented from being damaged by grooves. For example, a printed circuit board support fixture is disclosed in the publication number CN201365376Y. Although both fixtures can realize the positioning and support of PCB boards, since there are no detection holes on the end faces, the grating sensor on the external processing device cannot detect whether there is a PCB board on the fixture. Utility Model Content

[0004] In view of the above problems in the prior art, the utility model provides a PCB board fixture, which solves the problem that the existing fixture has no detection holes on the end surface, making it inconvenient for the processing device to determine whether there is a PCB board thereon.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A PCB jig is provided, comprising a jig body, wherein the jig body comprises a U-shaped plate and a support plate fixed on the U-shaped plate, wherein a plurality of limiting protrusions are arranged on the support plate, the plurality of limiting protrusions are used to support the PCB board, and a receiving groove formed by the plurality of limiting protrusions on the support plate is used to receive a plurality of components on the PCB board; at least one detection hole for vertically passing an optical signal of an external sensor is arranged on the support plate and on the bottom surface of the U-shaped plate, and the detection hole is a square hole, and the side length of the detection hole is greater than the maximum side length of the component located above the detection hole.

[0007] In this solution, the multiple limiting protrusions on the support plate support the PCB board by avoiding the components on the PCB board, so that the PCB board can just be stuck on the multiple limiting protrusions, playing a role of positioning and supporting; at the same time, the setting of the detection hole can not only allow the optical signal of the sensor of the processing device to pass through, so as to facilitate the external processing device to determine whether there is a PCB board on the fixture, but also the setting of the detection hole can allow components to pass through, playing a role of positioning the components.

[0008] Furthermore, the support plate is a rectangular plate-shaped structure, and three threaded holes are arranged on the two long sides of the end surface of the support plate, and the three threaded holes are arranged at the two ends and the middle of the long sides of the support plate, respectively. The support plate is connected to the two side wall bolts of the U-shaped plate through the six threaded holes. The six bolts pass through the six threaded holes respectively to fix the two ends and the middle of the two long sides of the support plate, so that the support plate can be fixed flatly on the U-shaped plate.

[0009] Furthermore, both short sides of the support plate are provided with limit baffles, which can limit the two ends of the PCB board.

[0010] Furthermore, an arrow-shaped notch layer is provided on the bottom of the receiving groove on the support plate, which is convenient for indicating the installation direction and is less likely to be scratched or fall off than conventional stickers.

[0011] Furthermore, at least one sinking groove is provided at the bottom of the receiving groove on the support plate. Since the heights of the components on the PCB are different, when the height of one or more components is high, the sinking groove can be used to deepen the depth of the receiving cavity, thereby avoiding the setting of the limiting protrusion too high.

[0012] Furthermore, a self-locking button is provided on the support plate at the detection hole, and the button head on the self-locking button has two states: raised and lowered. The top surface of the button head on the self-locking button in the raised state is on the same plane as the top surface of the limit baffle. Due to different specific functions, PCB boards of the same type but different models may have inconsistent components at the same part. The setting of the self-locking button can adjust the height of the button head, so that it can adapt to PCB boards of the same type but different models, thereby improving the scope of application.

[0013] Furthermore, the length and width of the support plate are the same as the length and width of the bottom surface of the U-shaped plate.

[0014] Furthermore, the support plate and the U-shaped plate are both made of aluminum alloy.

[0015] The utility model discloses a PCB board fixture, which has the following beneficial effects:

[0016] The multiple limiting protrusions on the support plate of the utility model support the PCB board by avoiding the components on the PCB board, so that the PCB board can be just stuck on the multiple limiting protrusions, which plays a role of positioning and supporting; at the same time, the setting of the detection hole can not only allow the optical signal of the sensor of the processing device to pass through, so as to facilitate the external processing device to judge whether there is a PCB board on the fixture, but also the setting of the detection hole can allow components to pass through, which plays a role of positioning the components. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a top view of the PCB fixture;

[0018] Figure 2 This is a side view of the PCB fixture;

[0019] Figure 3 It is a schematic diagram of the self-locking button in a retracted state;

[0020] Among them: 1. Support plate; 11. Limit baffle; 2. U-shaped plate; 3. Limit protrusion; 4. Detection hole; 5. Self-locking button; 6. Sink; 7. Sensor; 8. Score layer. DETAILED DESCRIPTION

[0021] The specific implementation methods of the utility model are described below to facilitate technical personnel in this technical field to understand the utility model, but it should be clear that the utility model is not limited to the scope of the specific implementation methods. For ordinary technical personnel in this technical field, as long as various changes are within the spirit and scope of the utility model defined and determined by the attached claims, these changes are obvious, and all utility model creations using the concept of the utility model are protected.

[0022] refer to Figure 1 and Figure 2 This embodiment provides a PCB board fixture, including a fixture body, and the fixture body includes a U-shaped plate 2 and a support plate 1.

[0023] The support plate 1 is threadedly connected to the U-shaped plate 2, and the length and width of the support plate 1 are the same as the length and width of the bottom surface of the U-shaped plate 2. The support plate 1 and the U-shaped plate 2 are both made of aluminum alloy.

[0024] The support plate 1 is provided with a plurality of limiting protrusions 3, which are used to support the PCB board, and the receiving groove formed by the plurality of limiting protrusions 3 on the support plate 1 is used to accommodate the plurality of components on the PCB board. The plurality of limiting protrusions 3 on the support plate 1 avoid the components on the PCB board to support the PCB board, so that the PCB board can be just stuck on the plurality of limiting protrusions 3, which plays a role of positioning and supporting;

[0025] At least one detection hole 4 is provided on the support plate 1 and the bottom surface of the U-shaped plate 2 for vertically passing the optical signal of the external sensor 7, and the detection hole 4 is a square hole, and the side length of the detection hole 4 is greater than the maximum side length of the component located above it. The setting of the detection hole 4 not only allows the optical signal of the sensor 7 of the processing device to pass through, so as to facilitate the external processing device to determine whether there is a PCB board on the fixture, but also allows the components to pass through, thereby playing a role in positioning the components.

[0026] As a specific structure of the threaded connection between the support plate 1 and the U-shaped plate 2, the support plate 1 is a rectangular plate structure, and three threaded holes are provided on the two long sides of the end surface of the support plate 1, and the three threaded holes are respectively provided at the two ends and the middle of the long sides of the support plate 1. The support plate 1 is bolted to the two side walls of the U-shaped plate 2 through the six threaded holes. The six bolts pass through the six threaded holes respectively to fix the two ends and the middle of the two long sides of the support plate 1, so that the support plate 1 can be fixed on the U-shaped plate 2 flatly.

[0027] As a further solution of this embodiment, limit baffles 11 are provided on both short sides of the support plate 1. The setting of the limit baffles 11 can limit the two ends of the PCB board.

[0028] An arrow-shaped notched layer 8 is provided on the bottom of the receiving groove on the support plate 1. The arrow-shaped notched layer 8 is convenient for indicating the installation direction, and the notched layer 8 is not easy to be scratched or dropped compared with conventional stickers.

[0029] At least one sinking groove 6 is provided at the bottom of the receiving groove on the support plate 1. Since the heights of the components on the PCB are different, when the height of one or more components is high, the sinking groove 6 can be used to deepen the depth of the receiving cavity, thereby avoiding the setting of the limiting protrusion 3 too high.

[0030] As a further solution of this embodiment, refer to Figure 2 and Figure 3 , due to the different specific functions of PCB boards of the same type but different models, there may be inconsistent components at the same position, that is, there are two situations where components exist or do not exist. Therefore, in this embodiment, a self-locking button 5 is provided on the support plate 1 at the detection hole 4. The button head on the self-locking button 5 has two states of rising and falling. The top surface of the button head on the self-locking button 5 in the raised state is located on the same plane as the top surface of the limit baffle 11. When the self-locking button 5 is pressed, the button head rises to lift the PCB board. When it is pressed again, the button head rises and falls to avoid components existing in the same position on the same type of PCB board. The setting of the self-locking button 5 can adjust the height of the button head, so that it can adapt to PCB boards of the same type but different models, improve the scope of application, and at the same time avoid the setting of the detection hole 4 to reduce the support area of ​​the support plate 1 on the PCB board.

[0031] Although the specific implementation of the utility model is described in detail in conjunction with the drawings, it should not be understood as limiting the scope of protection of this patent. Within the scope described in the claims, various modifications and variations that can be made by those skilled in the art without creative work still fall within the scope of protection of this patent.

Claims

1. A PCB board fixture, characterized in that: The jig comprises a jig body, the jig body comprising a U-shaped plate (2) and a support plate (1) fixed on the U-shaped plate (2), the support plate (1) being provided with a plurality of limiting protrusions (3), the plurality of limiting protrusions (3) being used to support a PCB board, and the accommodating groove formed by the plurality of limiting protrusions (3) on the support plate (1) being used to accommodate a plurality of components on the PCB board; At least one detection hole (4) is provided on the support plate (1) and on the bottom surface of the U-shaped plate (2) for vertically passing an optical signal of an external sensor (7), and the detection hole (4) is a square hole, and the side length of the detection hole (4) is greater than the maximum side length of the component located above the detection hole (4).

2. The PCB board fixture according to claim 1, characterized in that: The support plate (1) is in the form of a rectangular plate structure. Three threaded holes are arranged on the two long sides of the end surface of the support plate (1). The three threaded holes are arranged at the two ends and the middle of the long sides of the support plate (1), respectively. The support plate (1) is bolted to the two side walls of the U-shaped plate (2) via the six threaded holes.

3. The PCB board fixture according to claim 2, characterized in that: Limiting baffles (11) are provided on both short sides of the support plate (1).

4. The PCB board fixture according to claim 3, characterized in that: An arrow-shaped notched layer (8) is provided on the bottom of the accommodating groove on the support plate (1).

5. The PCB board fixture according to claim 3, characterized in that: At least one sinking groove (6) is provided on the bottom of the accommodating groove on the support plate (1).

6. The PCB board fixture according to claim 3, characterized in that: A self-locking button (5) is provided on the support plate (1) at the detection hole (4); the button head on the self-locking button (5) has two states: raised and lowered; the top surface of the button head on the self-locking button (5) in the raised state is located on the same plane as the top surface of the limit baffle (11).

7. The PCB board fixture according to claim 1, characterized in that: The length and width of the support plate (1) are the same as the length and width of the bottom surface of the U-shaped plate (2).

8. The PCB board fixture according to any one of claims 1 to 7, characterized in that: The support plate (1) and the U-shaped plate (2) are both made of aluminum alloy.

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