Flexible circuit board welding jig

Abstract

The utility model provides a flexible circuit board welding jig, which belongs to the technical field of flexible circuit board welding and comprises a supporting seat, a first fixing groove and a second fixing groove are formed in the top of the supporting seat, and a mounting bin is arranged on one side, close to the first fixing groove, of the supporting seat. A rotating pipe parallel to the welding length direction is connected to the mounting bin, a connecting pipe is arranged at one end of the rotating pipe, the connecting pipe is connected with an air pump, and an air blowing groove is formed in the rotating pipe in the length direction. By arranging the rotating pipe, during welding, high-pressure gas is conveyed into the rotating pipe through the connecting pipe by means of an air pump and is blown out through the blowing groove, the air flow direction is from the position above the end, fixed to the electronic device, of the flexible circuit board to the to-be-welded end, and at the moment, the flexible circuit board can be bulldozed to be flat from the fixed end to the to-be-welded end by the air flow; and under the action of the air flow, the whole body is attached to the rigid circuit board, so that the welding precision is improved, and the air flow does not shield a tin adding and welding mechanism.

Description

Technical Field

[0001] The utility model belongs to the technical field of flexible circuit board welding, in particular to a flexible circuit board welding jig. Background Art

[0002] Flexible circuit boards can be bent and folded at will to adapt to various irregular shapes and spatial layout requirements. They are used for electrical connections between relatively movable electronic devices and rigid circuit boards, such as foldable displays, movable cameras, buttons, etc. One end of the flexible circuit board is connected to the electronic device through the packaging process during the production of the electronic device, while the other end of the flexible circuit board needs to be electrically connected to the rigid circuit board through welding. The flexible circuit board welding jig is an auxiliary tool specially used for flexible circuit board welding. Since flexible circuit boards are light and flexible, special jigs are required during welding to ensure their stability and accuracy, thereby improving the accuracy and efficiency of welding.

[0003] Currently, the circuit board is limited horizontally by opening grooves corresponding to the shape of the circuit board on the jig to avoid horizontal movement of the circuit board during welding and improve welding accuracy. Flexible circuit boards are made of soft polyester film and will bend on their own, so they need to be pressed to make them flat.

[0004] However, when soldering the wiring of the flexible circuit board, solder needs to be added and soldered using a soldering head. Therefore, the wiring of the flexible circuit board cannot be directly flattened using tools. As a result, when soldering, only the area close to the wiring of the flexible circuit board can be pressed to make the wiring of the flexible circuit board as flat as possible, which makes the welding defect rate of the flexible circuit board high. Utility Model Content

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a flexible circuit board welding jig, which at least partially solves the above problems.

[0006] The technical solution adopted by the present invention is as follows: The present invention proposes a flexible circuit board welding jig, comprising a support base, the top of which is provided with a first fixing groove and a second fixing groove for fixing electronic components and a rigid circuit board, respectively:

[0007] A mounting chamber is provided on one side of the support base close to the first fixing groove, and a rotating tube arranged parallel to the welding length direction is connected to the mounting chamber. A connecting tube is provided at one end of the rotating tube, and the connecting tube is connected to an air pump for delivering high-pressure gas into the rotating tube. The rotating tube is provided with a blowing groove along the length direction for blowing high-pressure airflow toward the welding position, so that the flexible circuit board can be flattened by the airflow;

[0008] The rotating tube is configured to be rotatable along its own axis so that the blowing direction of the blowing slot can be adjusted.

[0009] Furthermore, the installation bin is provided with an arc-shaped portion adapted to the rotating tube, the rotating tube rotates within the arc-shaped portion, and the rotating tube is supported by the arc-shaped portion to rotate, and the arc-shaped portion is provided with an air outlet slot corresponding to the blowing slot, so that the air flow blown by the blowing slot can pass through the air outlet slot.

[0010] Furthermore, the width of the air outlet slot is greater than the width of the air blowing slot, so that the air blowing slot can adjust the blowing direction within the width range of the air outlet slot.

[0011] Furthermore, a cavity is provided inside the support base, a plurality of air holes communicating with the cavity are provided on the bottom surfaces of the first fixing groove and the second fixing groove, a sealed cavity is provided inside the installation chamber, and a connecting pipe is connected between the support base and the installation chamber, so that the cavity and the sealed cavity are communicated through the connecting pipe;

[0012] When the blowing groove is rotated to be connected with the sealing cavity, positive pressure can be formed at the air hole.

[0013] Furthermore, an ion wind rod is provided on one side of the connecting tube, the output end of the ion wind rod extends into the connecting tube, the power connection end of the ion wind rod is connected to an ion generator, and the air inlet end of the ion wind rod is connected to the air pump, so that the ion wind rod can transport ion wind for removing static electricity into the connecting tube and blow it onto the flexible circuit board through the blowing slot.

[0014] Furthermore, control valves are provided on the connecting pipelines between the air pump and the connecting pipe and the ion wind rod, which can respectively control the air supply to the connecting pipe and the ion wind rod.

[0015] Furthermore, one end of the rotating tube away from the connecting tube is coaxially connected with a knob, and the knob extends to the outside of the installation compartment.

[0016] Furthermore, a support for supporting the flexible circuit board is provided between the first fixing groove and the second fixing groove.

[0017] The beneficial effects achieved by the utility model using the above structure are as follows:

[0018] 1. By setting up a rotating tube, during welding, an air pump is used to transport high-pressure gas into the rotating tube through the connecting tube and blow it out from the blowing slot. The airflow direction is from the end where the flexible circuit board and the electronic device are fixed to the end to be welded. At this time, the flexible circuit board can be flattened by the airflow from the fixed end to the end to be welded, and under the action of the airflow, the whole is attached to the rigid circuit board, thereby improving the welding accuracy, and the airflow will not block the tinning and welding mechanisms.

[0019] 2. By setting air holes on the bottom surfaces of the first fixing groove and the second fixing groove, when the electronic components and the rigid circuit board need to be removed, gas is delivered into the cavity to exhaust gas upwards through the air holes. The pressure of the upward exhaust gas from the air holes can be used to blow up the electronic components and the rigid circuit board, making it convenient for operators to remove them quickly and avoiding the phenomenon that the electronic components or the rigid circuit board are stuck and difficult to remove due to production errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a flexible circuit board welding jig proposed in an embodiment of the present utility model;

[0021] Figure 2 This is a schematic structural diagram of a hollow cavity and a sealed cavity in a flexible circuit board welding jig proposed in an embodiment of the present utility model;

[0022] Figure 3 From top to bottom, the schematic diagrams of the flexible circuit board states are as follows: when the blowing slot is not blowing air and when it is blowing air;

[0023] Figure 4 This is a schematic structural diagram of a transfer tube for a flexible circuit board welding jig proposed in an embodiment of the present utility model;

[0024] Figure 5 This is a schematic diagram of the connections of an ion generator, an air pump, and a control valve in a flexible circuit board welding jig proposed in an embodiment of the present invention.

[0025] Among them, 1. Support seat; 101. First fixing slot; 102. Second fixing slot; 103. Air hole; 104. Cavity; 11. Support platform; 2. Mounting compartment; 21. Arc-shaped portion; 201. Air outlet slot; 202. Sealed cavity; 3. Rotating tube; 301. Blowing slot; 31. Connecting tube; 32. Knob; 4. Connecting tube; 5. Ion wind rod; 51. Ion generator; 6. Air pump; 7. Control valve.

[0026] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0029] like Figure 1 As shown, the utility model proposes a flexible circuit board welding jig, which includes a support base 1, an installation chamber 2 and a rotating tube 3.

[0030] A first fixing groove 101 and a second fixing groove 102 are provided on the top of the support base 1. The shape of the first fixing groove 101 matches the shape of the electronic device. After the electronic device is placed in the first fixing groove 101, it is restricted and fixed in the horizontal direction. The shape of the second fixing groove 102 matches the shape of the rigid circuit board. After the rigid circuit board is placed in the second fixing groove 102, it is restricted and fixed in the horizontal direction.

[0031] It should be noted that when the electronic device is produced, it is connected to one end of the flexible circuit board through a packaging process. Therefore, the other electrical terminal of the flexible circuit board needs to be welded to the rigid circuit board.

[0032] Combine Figure 1 、 Figure 2 and Figure 3 As shown, a mounting chamber 2 is provided on one side of the support base 1 near the first fixing groove 101, and a rotating tube 3 arranged parallel to the welding length direction is connected to the mounting chamber 2. A connecting tube 31 is provided at one end of the rotating tube 3, and the connecting tube 31 is connected to an air pump 6 for conveying high-pressure gas into the rotating tube 3. The rotating tube 3 is provided with a blowing groove 301 along the length direction, which can blow air from the end where the flexible circuit board and the electronic device are fixed to the end to be welded. At this time, the flexible circuit board can be flattened by the airflow from the fixed end to the end to be welded, and under the action of the airflow, the whole is attached to the rigid circuit board (as shown in FIG. Figure 3 shown).

[0033] In this way, the flexible circuit board is flattened by high-pressure airflow, so that the end of the flexible circuit board to be welded to the rigid circuit board is integrally attached to the rigid circuit board, thereby improving welding accuracy, and the airflow will not block the tinning and welding mechanism.

[0034] Furthermore, the rotating tube 3 is configured to be rotatable along its own axis, so that the blowing direction of the blowing slot 301 can be adjusted, thereby improving the flexibility of use.

[0035] In a specific embodiment, the installation bin 2 is provided with an arc-shaped portion 21 adapted to the rotating tube 3. The rotating tube 3 rotates in the arc-shaped portion 21 and is supported by the arc-shaped portion 21 to rotate. The arc-shaped portion 21 is provided with an air outlet slot 201 corresponding to the air blowing slot 301, so that the air flow blown by the air blowing slot 301 can pass through the air outlet slot 201.

[0036] Furthermore, the width of the air outlet slot 201 is greater than the width of the air blowing slot 301 , so that the air blowing slot 301 can adjust the blowing direction within the width range of the air outlet slot 201 .

[0037] Combine Figure 2 As shown, a cavity 104 is provided inside the support base 1, and the bottom surfaces of the first fixing groove 101 and the second fixing groove 102 are each provided with a plurality of air holes 103 communicating with the cavity 104. A sealed cavity 202 is provided inside the mounting chamber 2, and a connecting pipe 4 is connected between the support base 1 and the mounting chamber 2, so that the cavity 104 and the sealed cavity 202 are connected through the connecting pipe 4;

[0038] When the blowing groove 301 rotates to connect with the sealed cavity 202, the gas output by the air pump 6 is transported to the sealed cavity 202 through the blowing groove 301, so that the air pressure in the sealed cavity 202 increases. Since the sealed cavity 202 and the cavity 104 are connected through the connecting pipe 4, the air pressure in the cavity 104 increases synchronously. At this time, the air hole 103 is in a positive pressure state for exhausting outwards.

[0039] In this way, after welding is completed, when the electronic components and the rigid circuit board need to be removed, the rotating tube 3 is rotated to rotate the blowing groove 301 to communicate with the sealed cavity 202, and gas is delivered into the cavity 104 and exhausted upward through the air holes 103. The pressure of the upward exhaust from the air holes 103 is used to blow up the electronic components and the rigid circuit board, making it easier for the operator to remove them quickly and avoiding the phenomenon that the electronic components or the rigid circuit board are stuck and difficult to remove due to production errors;

[0040] After the electronic components and rigid circuit board are taken out, the rotating tube 3 is rotated again until the blowing slot 301 is connected to the air outlet slot 201. At this time, the air hole 103 no longer exhausts air, which will not affect the clamping of the electronic components and rigid circuit board.

[0041] Combine Figure 1 and Figure 5As shown, an ion wind rod 5 is provided on one side of the connecting tube 31, the output end of the ion wind rod 5 extends into the connecting tube 31, the power end of the ion wind rod 5 is connected to the ion generator 51, and the air inlet end of the ion wind rod 5 is connected to the air pump 6;

[0042] Under the action of the ion generator 51, the output end of the ion wind rod 5 can generate a large number of air masses with positive and negative charges, and under the action of the airflow of the air pump 6, they are transported to the connecting tube 31. The airflow in the connecting tube 31 transports the positive and negative charged air masses to the rotating tube 3, and blows them onto the flexible circuit board through the blowing groove 301. The positive and negative charged air masses are used to eliminate static electricity in the welding area to prevent static electricity from causing circuit board breakdown.

[0043] In this way, when the flexible circuit board is flattened by the high-pressure airflow blown out by the blowing slot 301, the high-pressure airflow blown out by the blowing slot 301 carries a large number of positive and negative charged air masses, which can eliminate static electricity in the welding area and prevent the circuit board from being broken down due to static electricity.

[0044] Combine Figure 5 As shown, control valves 7 are provided on the connecting pipelines of the air pump 6 and the connecting pipe 31 and the ion wind rod 5, which can control the air supply to the connecting pipe 31 and the ion wind rod 5 respectively.

[0045] The air supply required by the ion wind rod 5 is relatively small, and it can complete the transportation of positive and negative charged air masses. The air supply required by the connecting tube 31 is relatively large, and the air flow needs to be used to meet the demand for flattening the flexible circuit board. Therefore, by setting two control valves 7 for independent control, the air supply can be flexibly adjusted.

[0046] Combine Figure 1 and Figure 4 As shown, one end of the rotating tube 3 away from the connecting tube 31 is coaxially connected to a knob 32 , and the knob 32 extends to the outside of the installation chamber 2 . The operator uses the knob 32 to rotate the rotating tube 3 to improve the convenience of use.

[0047] Combine Figure 1 、 Figure 2 and Figure 3 As shown, a support 11 for supporting the flexible circuit board is provided between the first fixing groove 101 and the second fixing groove 102, so that the suspended flexible circuit board between the electronic device and the rigid circuit is supported to prevent the flexible circuit board from bending downward.

[0048] The working principle of the present invention is as follows: the electronic device is placed in the first fixing groove 101, and the rigid circuit board is placed in the second fixing groove 102. Then, the air pump 6 is used to deliver high-pressure gas to the rotating tube 3 through the connecting pipe 31, and the gas is blown out from the blowing groove 301. The direction of the air flow is from the end where the flexible circuit board and the electronic device are fixed to the end to be welded. At this time, the flexible circuit board can be flattened by the air flow from the fixed end to the end to be welded, and under the action of the air flow, the flexible circuit board is attached to the rigid circuit board as a whole (such as Figure 3 As shown), the welding accuracy is improved, and the airflow will not block the tinning and welding mechanisms;

[0049] After welding is completed, when the electronic components and rigid circuit boards need to be removed, the rotating tube 3 is rotated to rotate the blowing groove 301 to communicate with the sealed cavity 202, and gas is delivered into the cavity 104 and exhausted upward through the air holes 103. The pressure of the upward exhaust from the air holes 103 is used to blow up the electronic components and rigid circuit boards, making it easier for operators to remove them quickly and avoiding the phenomenon that the electronic components or rigid circuit boards are stuck and difficult to remove due to production errors;

[0050] After the electronic components and rigid circuit board are taken out, the rotating tube 3 is rotated again until the blowing slot 301 is connected to the air outlet slot 201. At this time, the air hole 103 no longer exhausts air, which will not affect the clamping of the electronic components and rigid circuit board.

[0051] In summary of the above embodiments, by providing a rotating tube 3, during welding, an air pump 6 is used to deliver high-pressure gas into the rotating tube 3 through the connecting tube 31, and the gas is blown out from the blowing slot 301. The airflow direction is from above the end where the flexible circuit board and the electronic device are fixed, and blows toward the end to be welded. At this time, the flexible circuit board can be flattened from the fixed end to the end to be welded by the airflow, and under the action of the airflow, the flexible circuit board can be completely attached to the rigid circuit board, thereby improving welding accuracy, and the airflow will not block the soldering and welding mechanisms.

[0052] By providing air holes 103 on the bottom surfaces of the first fixing groove 101 and the second fixing groove 102, when the electronic device and the rigid circuit board need to be removed, gas is delivered into the cavity 104 to exhaust gas upwards through the air holes 103. The pressure of the upward exhaust gas from the air holes 103 is used to blow up the electronic device and the rigid circuit board, making it convenient for the operator to remove them quickly and avoiding the phenomenon that the electronic device or the rigid circuit board becomes stuck and difficult to remove due to production errors.

[0053] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0054] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A flexible circuit board welding jig, characterized in that: The support base (1) comprises a first fixing groove (101) and a second fixing groove (102) formed on the top of the support base (1), which are used to fix the electronic device and the rigid circuit board respectively: A mounting chamber (2) is provided on one side of the support base (1) close to the first fixing groove (101), and a rotating tube (3) arranged parallel to the welding length direction is connected to the mounting chamber (2), and a connecting tube (31) is provided at one end of the rotating tube (3), and the connecting tube (31) is connected to an air pump (6) for conveying high-pressure gas into the rotating tube (3), and a blowing groove (301) for blowing high-pressure airflow toward the welding position is provided along the length direction of the rotating tube (3), so that the flexible circuit board can be flattened by the airflow; The rotating tube (3) is configured to be rotatable along its own axis, so that the blowing direction of the blowing slot (301) can be adjusted.

2. The flexible circuit board welding jig according to claim 1, characterized in that: The installation bin (2) is provided with an arc-shaped portion (21) adapted to the rotating tube (3); the rotating tube (3) rotates in the arc-shaped portion (21); the rotating tube (3) is supported by the arc-shaped portion (21) to rotate; an air outlet slot (201) corresponding to the air blowing slot (301) is provided on the arc-shaped portion (21), so that the air flow blown by the air blowing slot (301) can pass through the air outlet slot (201).

3. The flexible circuit board welding jig according to claim 2, characterized in that: The width of the air outlet slot (201) is greater than the width of the air blowing slot (301), so that the air blowing slot (301) can adjust the air blowing direction within the width range of the air outlet slot (201).

4. The flexible circuit board welding jig according to claim 1, characterized in that: A cavity (104) is provided inside the support seat (1), a plurality of air holes (103) are provided on the bottom surfaces of the first fixing groove (101) and the second fixing groove (102) and are communicated with the cavity (104), a sealed cavity (202) is provided inside the installation chamber (2), and a connecting pipe (4) is connected between the support seat (1) and the installation chamber (2), so that the cavity (104) and the sealed cavity (202) are communicated through the connecting pipe (4); When the blowing groove (301) rotates to communicate with the sealing cavity (202), positive pressure can be formed at the air hole (103).

5. The flexible circuit board welding jig according to claim 1, characterized in that: An ion wind rod (5) is provided on one side of the connecting tube (31), the output end of the ion wind rod (5) extends into the connecting tube (31), the power connection end of the ion wind rod (5) is connected to an ion generator (51), and the air inlet end of the ion wind rod (5) is connected to the air pump (6), so that the ion wind rod (5) can transport ion wind for removing static electricity into the connecting tube (31), and blow it onto the flexible circuit board through the blowing slot (301).

6. The flexible circuit board welding jig according to claim 5, characterized in that: The air pump (6) and the connecting pipe (31) and the connecting pipe of the ion wind rod (5) are each provided with a control valve (7), which can respectively control the air supply volume to the connecting pipe (31) and the ion wind rod (5).

7. The flexible circuit board welding jig according to claim 1, characterized in that: One end of the rotating tube (3) away from the connecting tube (31) is coaxially connected to a knob (32), and the knob (32) extends to the outside of the installation chamber (2).

8. The flexible circuit board welding jig according to claim 1, characterized in that: A support platform (11) for supporting a flexible circuit board is provided between the first fixing groove (101) and the second fixing groove (102).

Images