Reflow oven clamp capable of accurately controlling part welding height

Abstract

The utility model discloses a reflow oven clamp capable of accurately controlling the welding height of a part. The reflow oven clamp comprises a clamp body, a PCBA limiting cavity, a PCBA fixing chuck, a PCBA fool-proof positioning pin, an element supporting block, a spring, a supporting block and an adjusting screw. By means of the mode, the reflow oven clamp capable of accurately controlling the welding height of the part can work continuously, improve the production capacity to the maximum extent, maximize the production efficiency and meanwhile improve the welding quality, and is easy to operate and convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of SMT, in particular to a reflow furnace fixture capable of accurately controlling the welding height of parts. Background Art

[0002] At present, in the SMT reflow process, the heavy weight of the soldered components often causes the PCB to fall off during the reflow process. In order to ensure that the material does not fall off during the reflow process and the quality of soldering, it is necessary to use a reflow furnace fixture to support the soldered components and control the height of the device during the reflow process. Utility Model Content

[0003] The utility model provides a reflow furnace fixture which can accurately control the welding height of parts, has the advantages of high reliability, precise positioning, compact structure, etc., and has broad market prospects in the application and popularization of SMT fixtures.

[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is:

[0005] Provided is a reflow furnace fixture that can accurately control the welding height of parts, which includes: a fixture body, a PCBA limit cavity, a PCBA fixed chuck, a PCBA anti-foolproof positioning pin, a component support block, a spring, a support block, and an adjusting screw.

[0006] The PCBA limiting cavity is arranged on the fixture body to place and position the PCB board to be processed. The PCBA foolproof positioning pin is arranged in the PCBA limiting cavity to be movably connected with the positioning hole on the PCB board for positioning. A plurality of PCBA fixing chucks are rotatably arranged on the fixture body outside the PCBA limiting cavity to press the PCB board tightly in the PCBA limiting cavity.

[0007] The component support block is arranged at the bottom of the clamp body, and a positioning groove for positioning the component is arranged at the top of the component support block. A height adjustment groove is arranged on the component support block below the positioning groove, and the positioning groove is communicated with the height adjustment groove. The bottom of the support block is connected to the bottom surface of the height adjustment groove through a spring, and the upper end of the adjusting screw passes through the component support block and the spring in the height adjustment groove, and is connected to the support block to adjust the height of the support block, thereby achieving good contact between the PCB board and the component.

[0008] In a preferred embodiment of the present invention, a plurality of the PCBA limiting cavities are provided on the fixture body.

[0009] In a preferred embodiment of the present invention, an anti-collision block is provided on the clamp body.

[0010] In a preferred embodiment of the present invention, the support block is a high temperature resistant support block.

[0011] In a preferred embodiment of the present invention, the adjusting screw is threadedly connected to the supporting block, and the adjusting screw is rotatably connected to the component supporting block.

[0012] In a preferred embodiment of the present invention, the adjusting screw and the supporting block are rotatably connected, and the adjusting screw and the component supporting block are threadedly connected.

[0013] The beneficial effects of the utility model are: continuous operation can be performed to maximize production capacity and production efficiency, while improving welding quality, and the operation is simple and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0015] Figure 1 It is a structural schematic diagram of a preferred embodiment of a reflow furnace fixture capable of accurately controlling the welding height of parts of the utility model;

[0016] Figure 2 The utility model is a structural schematic diagram of a preferred embodiment of a reflow furnace fixture capable of accurately controlling the welding height of parts. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-2 , the utility model embodiment includes:

[0019] A reflow furnace fixture capable of accurately controlling the welding height of parts, the structure of which comprises: a fixture body 1, a PCBA limiting cavity 2, a PCBA fixing chuck 3, a PCBA foolproof positioning pin 4, a component support block 5, a precision spring 6, a high temperature resistant support block 7, and an adjusting screw 8.

[0020] The PCBA limiting cavity is arranged on the fixture body for placing and positioning the PCB board 9 to be processed. The PCBA foolproof positioning pin is arranged in the PCBA limiting cavity to be movably connected and positioned with the positioning hole on the PCB board to prevent the PCB board from moving during processing.

[0021] Further preferably, a plurality of the PCBA limiting cavities are provided on the fixture body, and a plurality of PCBAs can be reflow-operated simultaneously to improve the efficiency of reflow-operation.

[0022] Further preferably, an anti-collision block 10 is provided on the clamp body.

[0023] A plurality of PCBA fixing chucks are rotatably provided on the fixture body outside the PCBA limiting cavity. When the end of the chuck is rotated to the top of the PCBA limiting cavity, the PCB board can be pressed tightly in the PCBA limiting cavity to prevent the PCB board from moving up and down.

[0024] The component support block is arranged at the bottom of the fixture body, and a positioning groove 11 matching the BOT surface of the PCB board is arranged on the top of the component support block. A height adjustment groove 12 is arranged on the component support block below the positioning groove, and the positioning groove is communicated with the height adjustment groove. The bottom of the support block is connected to the bottom surface of the height adjustment groove through a spring to provide a buffer for subsequent processing. The upper end of the adjusting screw passes through the component support block and the spring in the height adjustment groove, and is connected to the support block to adjust the height of the support block, thereby realizing the adjustment of the height of the position to be processed of the PCB board.

[0025] Further preferably, the support block is a high temperature resistant support block.

[0026] Further preferably, the adjusting screw is threadedly connected to the support block, and the adjusting screw is rotatably connected (bearing) to the element support block.

[0027] Further preferably, the adjusting screw is rotatably connected to the support block (bearing), and the adjusting screw is threadedly connected to the element support block.

[0028] When in use, the component 13 is placed in the positioning groove on the component support block, and the height of the support block is adjusted. The component is effectively supported by the precision spring and the high temperature resistant support block, so that the component is lifted and lowered to the corresponding processing position, and the PCB board is placed in the PCBA limit cavity to accurately position the PCBA position, and then the PCBA is fixed by the fixing clamp, so that the PCBA can have good contact with the component supported by the spring and the high temperature resistant support block during the reflow soldering process, and the bearing force of the spring can just offset the downward gravity of the component, so that continuous production operation can be achieved and the welding quality can be ensured.

[0029] The beneficial effects of the reflow furnace fixture of the utility model which can accurately control the welding height of parts are:

[0030] 1. Produce products without changing PCB design to meet customer needs;

[0031] 2. When the existing process cannot meet the production requirements, this reflow fixture can be used to achieve smooth product production. This fixture is easy to operate and can improve the welding quality at the same time;

[0032] 3. The positioning-support-welding-support-reset principle of this reflow soldering fixture is realized through the spring expansion and contraction operation rule, and the product production is realized through cyclic operation;

[0033] 4. Since this reflow fixture has the function of panelization, it can maximize production capacity and maximize production efficiency.

[0034] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A reflow furnace fixture capable of accurately controlling the welding height of parts, characterized in that: include: Fixture body, PCBA limit cavity, PCBA fixed chuck, PCBA anti-fool positioning pin, component support block, spring, support block, adjusting screw, The PCBA limiting cavity is arranged on the fixture body to place and position the PCB board to be processed. The PCBA foolproof positioning pin is arranged in the PCBA limiting cavity to be movably connected with the positioning hole on the PCB board for positioning. A plurality of PCBA fixing chucks are rotatably arranged on the fixture body outside the PCBA limiting cavity to press the PCB board tightly in the PCBA limiting cavity. The component support block is arranged at the bottom of the clamp body, and a positioning groove for positioning the component is arranged at the top of the component support block. A height adjustment groove is arranged on the component support block below the positioning groove, and the positioning groove is communicated with the height adjustment groove. The bottom of the support block is connected to the bottom surface of the height adjustment groove through a spring, and the upper end of the adjusting screw passes through the component support block and the spring in the height adjustment groove, and is connected to the support block to adjust the height of the support block, thereby achieving good contact between the PCB board and the component.

2. A reflow furnace fixture capable of accurately controlling the welding height of parts according to claim 1, characterized in that: The fixture body is provided with a plurality of PCBA limiting cavities.

3. A reflow furnace fixture capable of accurately controlling the welding height of parts according to claim 1, characterized in that: An anti-collision block is arranged on the clamp body.

4. The reflow furnace fixture capable of accurately controlling the welding height of parts according to claim 1, characterized in that: The support block is a high temperature resistant support block.

5. The reflow furnace fixture capable of accurately controlling the welding height of parts according to claim 1, characterized in that: The adjusting screw is threadedly connected to the support block, and the adjusting screw is rotatably connected to the element support block.

6. The reflow furnace fixture capable of accurately controlling the welding height of parts according to claim 1, characterized in that: The adjusting screw is rotatably connected to the support block, and the adjusting screw is threadedly connected to the element support block.

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