A jig for producing a circuit board assembly

Abstract

The utility model relates to circuit board auxiliary tool technical field, concretely is a kind of fixture for PCBA circuit board assembly production.The utility model discloses base, fixed plate, limit board, locating block and protective cover, fixed plate and locating block are fixed on base, and the top of fixed plate is movably installed with limit board, at least one first cavity is equipped on fixed plate, and limit part and second cavity are equipped on limit board with the cooperation of first cavity, second cavity extends along the direction of the side of fixed plate and limit board connection, forms cable avoiding passage, and protective cover is movably installed on locating block.The utility model improves the stability between the connection of connecting wire and circuit board assembly, effectively limits circuit board assembly, is convenient for machine processing, and reduces the defective rate.

Description

Technical Field

[0001] This utility model relates to the field of circuit board auxiliary tools, specifically a fixture for circuit board assembly production. Background Technology

[0002] Fixtures used in the production of printed circuit board assemblies (PCBAs) are specialized tooling instruments used to fix, position, and support circuit boards or components during the processing, assembly, and testing of circuit boards and their assemblies. Their core function is to ensure the positional accuracy and stability of circuit boards during the production process, avoid affecting the processing quality due to factors such as movement and deformation, and at the same time improve production efficiency and automation.

[0003] Fixtures used in PCB assembly production are key tooling throughout the entire PCB manufacturing process. Their design and application directly impact product quality, production efficiency, and cost control. During pick-and-place machine operation, fixtures secure the PCB board through mechanical fixing (such as slots and grippers) or vacuum adsorption, ensuring the accuracy of component placement, preventing component misalignment due to board movement, and avoiding issues like component misalignment and poor soldering caused by PCB assembly movement or deformation, thus reducing defect rates. However, the clamping stability of existing PCB assembly production fixtures needs improvement.

[0004] In existing fixtures used for manufacturing circuit board assemblies, multiple sets of wires are connected to one end of the circuit board assembly during the processing. Sometimes, the circuit board assembly needs to be heated and soldered, but there is no adequate protection for the connecting wires at the other end of the circuit board assembly, which may reduce the service life of the cables. Utility Model Content

[0005] The purpose of this invention is to solve the problems of insufficient stability in the clamping of circuit board assemblies and inadequate protection of connecting wires during the processing of circuit board assemblies, and to propose a fixture for the production of circuit board assemblies.

[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0007] A fixture for manufacturing circuit board assemblies includes a base, a fixing plate, a limiting plate, a positioning block, and a protective cover. The fixing plate is fixed on the base, and the limiting plate is located above the fixing plate and is movably connected to one side of the fixing plate via a pivot. The fixing plate has at least one first cavity for placing the circuit board assembly. The limiting plate has a limiting part that mates with the first cavity and a second cavity. The limiting part is used to press the non-processing area of ​​the circuit board assembly, and the second cavity is used to avoid the processing area of ​​the circuit board assembly.

[0008] The second cavity extends in a direction away from the connection between the fixing plate and the limiting plate, forming a cable avoidance channel for accommodating wires connected to the circuit board assembly;

[0009] The positioning block is fixed at the end of the base away from the connection between the fixing plate and the limiting plate, and the protective cover is movably installed on the positioning block.

[0010] Furthermore, the limiting portion is a protrusion extending from the edge of the second cavity toward the center.

[0011] Furthermore, the contact surface between the fixing plate and the limiting plate is provided with at least one set of fastening mechanisms.

[0012] Furthermore, the fastening mechanism includes a concave-convex interlocking structure disposed on the contact surface of the fixing plate and the limiting plate, wherein one of them is provided with a groove and the other is provided with a protrusion at a corresponding position, and the groove and the protrusion engage with each other.

[0013] Furthermore, the fastening mechanism includes mating magnets mounted on the fixing plate and the limiting plate.

[0014] Furthermore, a through hole is provided on the side of the positioning block away from the fixing plate, and the through hole is used to pass through the wires connected to the circuit board assembly.

[0015] Furthermore, the height of the through hole is greater than the height of the fixing plate.

[0016] Furthermore, the protective cover is movably connected to the positioning block via a pivot.

[0017] Furthermore, the limiting plate is movably connected to the fixed plate via a rotating shaft.

[0018] Furthermore, there are multiple first cavities and second cavities, arranged in an array along the length of the fixed plate.

[0019] Compared with the prior art, the significant advantages of this utility model are as follows: (1) The first cavity and the second cavity of the fixing plate and the limiting plate cooperate with each other to clamp the circuit board assembly, effectively restrict its displacement and vibration during the processing, and ensure the processing accuracy; the setting of the protrusion and the groove makes the fixing plate and the limiting plate better engage, effectively limiting the circuit board assembly, which is convenient for machine processing, greatly reducing the problems of chip offset and poor soldering caused by the movement or deformation of the circuit board, reducing the defect rate, and also making it easier to pick up the circuit board assembly. (2) The setting of the positioning block and the protective cover protects the multiple sets of connecting wires at one end of the circuit board assembly during the processing of the circuit board assembly, making the surface temperature of the connecting wires more stable, thereby improving the stability of the connection between the connecting wires and the circuit board assembly. Attached Figure Description

[0020] Figure 1 This is a first-view diagram of the top surface of this utility model;

[0021] Figure 2 This is a second-view schematic diagram of the top surface of this utility model;

[0022] Figure 3 This is a front perspective view of the present utility model;

[0023] Figure 4 This is a schematic diagram of the shape of the positioning block of this utility model;

[0024] Figure 5 This is a schematic diagram showing the positions of the protrusions and grooves of this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Base; 2. Positioning block; 3. Protective cover; 4. Fixing plate; 40. First cavity; 41. Protrusion; 5. Limiting plate; 50. Second cavity; 51. Groove. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0028] like Figures 1-5 As shown, this utility model provides a fixture for producing circuit board assemblies, including a base 1, a fixing plate 4, a limiting plate 5, a positioning block 2, and a protective cover 3. The fixing plate 4 is fixed on the base 1, and the limiting plate 5 is located above the fixing plate 4 and is movably connected to one side of the fixing plate 4 via a rotating shaft. The fixing plate 4 has a plurality of first cavities 40 arranged in an array along the length direction of the fixing plate 4 for placing circuit board assemblies. The limiting plate 5 has a limiting part and a second cavity 50 that cooperate with the first cavities 40. The limiting part is located at the edge of the second cavity 50 and is used to press the non-processing area of ​​the circuit board assembly. The second cavity 50 is used to avoid the processing area of ​​the circuit board assembly. The limiting part is a protrusion extending from the edge of the second cavity 50 to the center of the second cavity 50, effectively limiting the position of the circuit board assembly.

[0029] The second cavity 50 extends in the direction away from the connection between the fixing plate 4 and the limiting plate 5, forming a cable avoidance channel for accommodating wires connected to the circuit board assembly. The second cavity 50 improves the practicality of the fixture and reduces the defect rate.

[0030] The contact surfaces of the fixing plate 4 and the limiting plate 5 are provided with a fastening mechanism. The fastening mechanism can be a complementary concave-convex interlocking structure. One of the fixing plate 4 and the limiting plate 5 is provided with a groove 51, and the other is provided with a protrusion 41 at the corresponding position. The groove 51 and the protrusion 41 are engaged.

[0031] The fastening mechanism can also be a pair of magnets that clamp the fixing plate 4 and the limiting plate 5 together using magnetic attraction. The fastening mechanism can also be a combination of the two or other structures that can clamp the fixing plate 4 and the limiting plate 5 together.

[0032] The fastening mechanism allows for better clamping between the fixing plate 4 and the limiting plate 5, effectively limiting the circuit board assembly, facilitating machine processing, greatly reducing problems such as chip misalignment and poor soldering caused by circuit board movement or deformation, and lowering the defect rate. It also makes it easier to remove the circuit board assembly.

[0033] Positioning block 2 is fixed to base 1, and protective cover 3 is movably mounted on positioning block 2. Positioning block 2 has a U-shaped structure with its opening facing fixed plate 4 and limiting plate 5. The U-shaped structure includes a base and two side walls. Protective cover 3 is fitted over the two side walls, and one side of protective cover 3 is movably connected to the base of positioning block 2 via a pivot. Through the placement of positioning block 2 and protective cover 3, multiple sets of connecting wires at one end of the circuit board assembly are protected during the processing of the circuit board assembly, resulting in a more stable surface temperature of the connecting wires and thus improving the stability of the connection between the connecting wires and the circuit board assembly.

[0034] The positioning block 2 has a through hole on the side away from the fixing plate 4. This through hole is used to pass wires connected to the circuit board assembly. The through hole effectively increases the internal space of the positioning block 2 and facilitates heat dissipation. To further improve heat dissipation, the height of the through hole can be greater than the height of the fixing plate 4.

[0035] When the circuit board assembly needs to be processed and positioned, multiple circuit board assemblies are first placed sequentially in multiple first cavities 40, with the connecting wires at one end of the circuit board assembly placed in the positioning block 2. The connecting wires are then protected by flipping the protective cover 3. Next, the limiting plate 5 is flipped onto the top of the fixing plate 4, so that the fixing plate 4 and the limiting plate 5 engage through the protrusion 41 and the groove 51, with the limiting part pressing against the non-processing area of ​​the circuit board assembly. This effectively limits the position of the circuit board assembly and facilitates the picking up of the circuit board assembly by the operator.

[0036] The positioning block 2 has a through hole on the side away from the fixing plate 4, and the protective cover 3 flips down to cover the wires connected to the circuit board assembly. This allows the fixture to dissipate heat and protect the temperature inside the positioning block 2 during heating, thereby reducing the surface temperature of the connecting wires and improving the stability of the connection between the connecting wires and the circuit board assembly.

[0037] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A fixture for manufacturing circuit board assemblies, comprising a base, characterized in that, It also includes a fixing plate, a limiting plate, a positioning block, and a protective cover. The fixing plate is fixed on the base, and the limiting plate is located above the fixing plate and is movably connected to one side of the fixing plate via a rotating shaft. The fixing plate is provided with at least one first cavity for placing the circuit board assembly. The limiting plate is provided with a limiting part and a second cavity that cooperate with the first cavity. The limiting part is used to press the non-processed area of ​​the circuit board assembly, and the second cavity is used to avoid the processed area of ​​the circuit board assembly. The second cavity extends in a direction away from the connection between the fixing plate and the limiting plate, forming a cable avoidance channel for accommodating wires connected to the circuit board assembly; The positioning block is fixed at the end of the base away from the connection between the fixing plate and the limiting plate, and the protective cover is movably installed on the positioning block.

2. The fixture for circuit board assembly production according to claim 1, characterized in that: The limiting part is a protrusion extending from the edge of the second cavity toward the center.

3. The fixture for circuit board assembly production according to claim 1, characterized in that: The contact surface between the fixing plate and the limiting plate is provided with at least one set of fastening mechanisms.

4. The fixture for circuit board assembly production according to claim 3, characterized in that: The fastening mechanism includes a concave-convex interlocking structure disposed on the contact surface of the fixed plate and the limiting plate, wherein one of them is provided with a groove and the other is provided with a protrusion at a corresponding position, and the groove and the protrusion engage with each other.

5. The fixture for circuit board assembly production according to claim 3, characterized in that: The fastening mechanism includes a fixed plate and a limiting plate with mating magnets installed on them.

6. The fixture for circuit board assembly production according to claim 1, characterized in that: The positioning block has a through hole on the side away from the fixing plate, and the through hole is used to pass through the wires connected to the circuit board assembly.

7. The fixture for producing circuit board assemblies according to claim 6, characterized in that: The height of the through hole is greater than the height of the fixing plate.

8. The fixture for producing circuit board assemblies according to claim 1, characterized in that: The protective cover is movably connected to the positioning block via a pivot.

9. The fixture for producing circuit board assemblies according to claim 1, characterized in that: The limiting plate is movably connected to the fixed plate via a rotating shaft.

10. The fixture for producing circuit board assemblies according to claim 1, characterized in that: There are multiple first cavities and second cavities, arranged in an array along the length of the fixed plate.

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