Clamping jig

Abstract

The utility model discloses a clamping jig which comprises a clamping body and an abutting piece. The clamping body is provided with a ventilation part and a mounting part which are adjacently arranged, the ventilation part is provided with two through ventilation holes, the end face of one side of the ventilation part is provided with two supporting blocks, the two supporting blocks are located on the sides of the two ventilation holes respectively, and the mounting part protrudes out of the supporting blocks of the ventilation part; the abutting piece is detachably installed on the installation portion of the clamping body, and the hardness of the abutting piece is larger than that of the clamping body. According to the utility model, the hot air flowing problem during reflow soldering can be improved, and the PCB can be well heated, so that the yield is ensured.

Description

Technical Field

[0001] The utility model relates to the field of LED display module production, in particular to a clamping fixture. Background Art

[0002] The display circuit board of the existing LED display module generally adopts the reflow process to solder the components to the PCB board during production, wherein a clamping jig is installed on the reflow jig, and the clamping jig is used to position and support the PCB board. However, the existing clamping jig is relatively thick, which hinders the flow of hot air during reflow soldering, and a large amount of hot air will be absorbed by the clamping jig, resulting in a lower temperature of the part of the PCB board close to the clamping jig, which seriously affects the soldering effect and causes an increase in the product defect rate.

[0003] In view of the existence of the above problems, it is necessary to study a clamping fixture that can improve the hot air flow problem during reflow soldering, help to make the PCB board heated evenly and ensure the yield rate. Utility Model Content

[0004] The utility model aims to provide a clamping fixture, which can improve the problem of hot air flow during reflow soldering, and help to make the PCB board heated well to ensure the yield rate.

[0005] In order to achieve the above purpose, the solution of the utility model is:

[0006] A clamping fixture comprises a clamping body and a resistance piece; the clamping body is provided with a ventilation part and a mounting part which are adjacently arranged, the ventilation part is provided with two ventilation holes which penetrate therethrough, and an end face of one side of the ventilation part is provided with two support blocks, the two support blocks are respectively located on the sides of the two ventilation holes, and the mounting part protrudes from the support blocks of the ventilation part; the resistance piece is detachably mounted on the mounting part of the clamping body, and the hardness of the resistance piece is greater than the hardness of the clamping body.

[0007] The clamping body is made of plastic.

[0008] The clamping body is also provided with a plurality of through holes.

[0009] The clamping body is also provided with a guide groove.

[0010] The ventilation portion of the clamping body is provided with two support blocks, and the end surface thereof is also provided with a support block, and the support block and the two support blocks are distributed in a triangle.

[0011] The mounting portion of the clamping body is provided with two grooves which are respectively matched with the two ventilation holes of the ventilation portion.

[0012] The abutment member is provided with two recessed portions which respectively match and dock with the two grooves of the mounting portion of the clamping body.

[0013] The resisting member is locked with the mounting portion of the clamping body by means of screws.

[0014] The mounting portion of the clamping body is provided with a slot, and the abutment piece is clamped in the slot.

[0015] The material of the resistance member is synthetic stone.

[0016] After adopting the above scheme, when a clamping fixture of the utility model is used, the clamping fixture of the utility model is installed on the reflow soldering fixture; wherein, the mounting portion and the abutment of the clamping body pass through the through hole of the reflow soldering fixture and the two ventilation holes of the ventilation portion of the clamping body are communicated with the mounting hole, and the two supporting blocks of the ventilation portion of the clamping body abut against the end face of the reflow soldering fixture, so that an air flow circulation space communicating with the two ventilation holes of the ventilation portion is formed between the ventilation portion of the clamping body and the reflow soldering fixture; in this way, when reflow soldering is performed, the air flow circulation space between the ventilation portion of the clamping body and the reflow soldering fixture can be conducive to the diffusion of hot air, increase the hot air flow effect and improve the hot air flow problem; in addition, the two supporting blocks of the ventilation portion are respectively located on the sides of the two ventilation holes, so that the two supporting blocks can guide the hot air passing through the ventilation holes to the PCB board that abuts against the abutment, which helps to improve the heating effect of the PCB board, thereby improving the yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural exploded view of the utility model.

[0018] Figure 2 The structure of the utility model is shown in FIG. Figure 1 .

[0019] Figure 3 The structure of the utility model is shown in FIG. Figure 2 .

[0020] Figure 4 This is an illustration of the use of the utility model Figure 1 .

[0021] Figure 5 This is an illustration of the use of the utility model Figure 2 .

[0022] Figure 6 This is an illustration of the use of the utility model Figure 3 .

[0023] Description of labels:

[0024] Clamping body 1, vent 11, vent hole 111, support block 112, support block 113, mounting portion 12, groove 121, slot 122, through hole 13, guide groove 14,

[0025] Resistance piece 2, recess 21,

[0026] Reflow fixture A, through hole A1. DETAILED DESCRIPTION

[0027] In order to further explain the technical solution of the present utility model, the present utility model is described in detail below through specific embodiments.

[0028] like Figures 1 to 6 As shown, the utility model discloses a clamping fixture, which includes a clamping body 1 and a resistance member 2; wherein, the clamping body 1 is provided with a ventilation portion 11 and a mounting portion 12 which are adjacently arranged, the ventilation portion 11 is provided with two ventilation holes 111 penetrating therethrough, and the end face of one side of the ventilation portion 11 is provided with two support blocks 112, the two support blocks 112 are respectively located on the sides of the two ventilation holes 111, and the mounting portion 12 protrudes from the support blocks 112 of the ventilation portion 11; the resistance member 2 is detachably mounted on the mounting portion 12 of the clamping body 1, the hardness of the resistance member 2 is greater than the hardness of the clamping body 1, and the resistance member 2 is used to contact and abut against a PCB board.

[0029] Cooperate Figures 4 to 6 As shown, when a clamping fixture of the present invention is used, the clamping fixture of the present invention is installed on a reflow soldering fixture A; wherein the mounting portion 12 of the clamping body 1 and the abutment 2 pass through the through hole A1 of the reflow soldering fixture A, and the two vents 111 of the vent portion 11 of the clamping body 1 are connected to the mounting hole, and the two support blocks 112 of the vent portion 11 of the clamping body 1 are against the end surface of the reflow soldering fixture A, so that the vent portion 11 of the clamping body 1 and the reflow soldering fixture A are connected to the two vents 111 of the vent portion 11. 11; in this way, when reflow soldering is performed, the air flow space between the vent portion 11 of the clamping body 1 and the reflow soldering fixture A can be conducive to the diffusion of hot air, increase the hot air flow effect and improve the hot air flow problem; in addition, the two support blocks 112 of the vent portion 11 are respectively located on the sides of the two vents 111, so that the two support blocks 112 can guide the hot air flowing through the vents 111 to the PCB board that contacts the abutment 2, which helps to improve the heating effect of the PCB board, thereby improving the yield rate.

[0030] In the embodiment of the utility model, the clamping body 1 is made of plastic material, so that the cost of the clamping body 1 is low; the clamping body 1 is also provided with a plurality of through holes 13 and guide grooves 14, which helps to reduce the material used for the clamping body 1 and reduce the cost, and is also conducive to the diffusion of heat.

[0031] In an embodiment of the utility model, the ventilation portion 11 of the clamping body 1 is provided with two support blocks 112, and the end face is also provided with a support block 113, and the support block 113 is also used to abut against the end face of the reflow soldering jig A; the support block 113 and the two support blocks 112 are distributed in a triangular shape, so that when the support block 113 and the two support blocks 112 abut against the end face of the reflow soldering jig A, the clamping body 1 is stable and does not shake.

[0032] In the embodiment of the utility model, the mounting portion 12 of the clamping body 1 is provided with two grooves 121 respectively matched with the two vents 111 of the venting portion 11, and the grooves 121 can guide the hot air passing through the vents 111 to flow to the PCB board that contacts the abutment 2, which helps to improve the heating effect of the PCB board, thereby improving the yield rate. In addition, the abutment 2 is provided with two recessed portions 21 respectively matched with the two grooves 121 of the mounting portion 12 of the clamping body 1, and the recessed portions 21 can also guide the hot air passing through the vents 111 to flow to the PCB board that contacts the abutment 2, which helps to improve the heating effect of the PCB board, thereby improving the yield rate.

[0033] In the embodiment of the utility model, the resisting member 2 is locked with the mounting portion 12 of the clamping body 1 by screws, so that the resisting member 2 is easy to disassemble and replace. The mounting portion 12 of the clamping body 1 can be provided with a slot 122, and the resisting member 2 is clamped in the slot 122 to prevent the resisting member 2 from shaking.

[0034] In the embodiment of the utility model, the material of the abutment member 2 is synthetic stone. The hardness of synthetic stone is greater than that of plastic, and the wear resistance of synthetic stone is good.

[0035] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present utility model.

Claims

1. A clamping fixture, characterized in that: It includes a clamping body and a resisting member; The clamping body is provided with a venting portion and a mounting portion arranged adjacent to each other, the venting portion is provided with two vent holes penetrating therethrough, an end surface of one side of the venting portion is provided with two support blocks, the two support blocks are respectively located on the sides of the two vent holes, and the mounting portion protrudes from the support blocks of the venting portion; The resisting member is detachably mounted on the mounting portion of the clamping body, and the hardness of the resisting member is greater than the hardness of the clamping body.

2. A clamping fixture as claimed in claim 1, characterized in that: The clamping body is made of plastic.

3. A clamping fixture as claimed in claim 1, characterized in that: The clamping body is also provided with a plurality of through holes.

4. A clamping fixture as claimed in claim 1, characterized in that: The clamping body is also provided with a guide groove.

5. A clamping fixture as claimed in claim 1, characterized in that: The ventilation portion of the clamping body is provided with two support blocks, and the end surface thereof is also provided with a support block, and the support block and the two support blocks are distributed in a triangle.

6. A clamping fixture as claimed in claim 1, characterized in that: The mounting portion of the clamping body is provided with two grooves which are respectively matched with the two ventilation holes of the ventilation portion.

7. A clamping fixture as claimed in claim 6, characterized in that: The abutment member is provided with two recessed portions which respectively match and dock with the two grooves of the mounting portion of the clamping body.

8. A clamping fixture as claimed in claim 1, characterized in that: The resisting member is locked with the mounting portion of the clamping body by means of screws.

9. A clamping fixture as claimed in claim 1 or 8, characterized in that: The mounting portion of the clamping body is provided with a slot, and the abutment piece is clamped in the slot.

10. A clamping fixture as claimed in claim 1, characterized in that: The material of the resistance member is synthetic stone.

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