Welded part clamp for pulse thermocompression welding

Abstract

The embodiment of the utility model provides a welding part clamp for pulse thermocompression welding, and relates to the technical field of pulse thermocompression welding. The welding part clamp comprises a base, a plurality of clamping parts and a plurality of clamping parts, wherein a plurality of through holes are formed in the base; and the multiple adjusting rods are installed in the multiple through holes correspondingly, the tops of the multiple adjusting rods support the welding piece, and the heights of the tops of the multiple adjusting rods are configured to be consistent with the outline of the surface of the welding piece. The welding part clamp for pulse thermocompression welding can form an outline matched with the appearance of a welding part according to different surface appearances of the welding part, so that more stable supporting and positioning are provided.

Description

Technical Field

[0001] The utility model relates to the technical field of pulse hot pressing welding, in particular to a welding piece clamp used for pulse hot pressing welding. Background Art

[0002] Pulse hot pressure welding is a welding process that first uses a welding nozzle to press the welded parts together, then uses electric current to pass through the welding nozzle to generate heat, and then adjusts the welding temperature from room temperature to any set temperature as needed.

[0003] When using pulse hot pressing welding for welding, it is necessary to ensure that the welded parts to be welded together are stably fixed and do not shift during the welding process, otherwise gaps may exist between the welded parts, resulting in loose welding.

[0004] See also Figure 1 A first welding part 2 is arranged on the welding tip 1. Generally, the welding fixation with the second welding part 4 is realized by the solder 3 with the help of the heating of the welding tip 1. The first welding part 2 can be a flexible circuit board FPC, and the second welding part 4 can be a PCB board. There are usually many electronic devices assembled on the PCB board, and its pads need to be welded to the pads of the first welding part 2. Since there are many electronic devices arranged on the second welding part 4, in order to avoid damage to the electronic devices during the welding process, it is usually necessary to design a fixture of a specific shape to fix the second welding part 4 to be welded.

[0005] Considering that different products have different PCB boards, and the structures of PCB boards and the electronic devices mounted on them are also significantly different, each product needs to be designed with different fixtures according to the actual situation to meet the needs of production or experiments.

[0006] In view of this, there is indeed a need to provide a new type of welding fixture for pulse hot pressure welding that is universally applicable to different products. Utility Model Content

[0007] In order to solve the above existing technical problems or part thereof, the purpose of the utility model is to provide a welding fixture for pulse hot pressing welding. The welding fixture for pulse hot pressing welding can form a contour matching the shape of the welded part according to the different surface shapes of the welded part, thereby providing more stable support and positioning.

[0008] According to one aspect of the utility model, a welding fixture for pulse hot pressure welding is provided, the welding fixture comprising: a base, on which a plurality of through holes are arranged; a plurality of adjusting rods, the plurality of adjusting rods are respectively installed in the plurality of through holes, and the tops of the plurality of adjusting rods support the welding part and the height of the tops of the plurality of adjusting rods is configured to be consistent with the outer contour of the surface of the welding part.

[0009] In one embodiment, the welding fixture further includes: a top screw disposed in the plurality of through holes and in contact with a bottom end of the adjustment rod and capable of adjusting the height of the adjustment rod by rotation thereof.

[0010] In one embodiment, the welding part fixture further comprises at least two pressing plates configured to press the welding part onto the adjusting rod.

[0011] In one embodiment, the welding part fixture also includes: a sheet pressing guide post groove, which is arranged on opposite sides of the base; and a sheet pressing guide post, which is arranged in the sheet pressing guide post groove and can move along the sheet pressing guide post groove.

[0012] In one embodiment, the lower end of the tablet pressing guide pin is movably disposed in the tablet pressing guide pin groove, and the upper end of the tablet pressing guide pin is configured to be fixedly connected to the first end of the tablet; the tablet pressing guide pin groove is configured to be a guide pin groove with a T-shaped cross-section, and the lower end of the tablet pressing guide pin is also configured to be T-shaped in cross-section, and the lower end profile of the tablet pressing guide pin fits in the tablet pressing guide pin groove.

[0013] In one embodiment, the upper end of the tablet pressing guide pin is provided with a thread, and the first end of the tablet is threadedly connected to the upper end of the tablet pressing guide pin through a threaded hole thereon, and the degree of compression of the tablet is adjusted by coaxially rotating the tablet around the upper end of the tablet pressing guide pin.

[0014] In one embodiment, a silicone pad for contacting the welding piece is provided on the second end of the pressing sheet away from the first end.

[0015] In one embodiment, a spring pressed against the first end of the pressing sheet and a nut pressed against the pressing sheet and sleeved on the upper end of the pressing sheet guide pillar are provided on the upper end of the pressing sheet guide pillar.

[0016] In one embodiment, the base is further provided with: a supporting sheet groove, which is arranged at a side edge of the base; a supporting sheet, one end of which is arranged to be able to move in the supporting sheet groove, and the other end of the supporting sheet supports the welding part of the welding part.

[0017] In one embodiment, the base is further provided with a supporting sheet baffle to prevent the supporting sheet from detaching from the supporting sheet groove; the supporting sheet groove is an L-shaped groove; and the plurality of through holes are arranged in an array.

[0018] The welding fixture for pulse hot pressing welding according to the embodiment of the utility model has at least one of the following advantages or part of one of the advantages:

[0019] (1) By adjusting the height of the adjustment rods arranged in the multiple through holes of the base, a contour matching the shape of the welded part is formed according to the different shapes of the welded part surface, thereby achieving support and positioning of welded parts of different shapes;

[0020] (2) According to different welding parts of the welded parts, the position of the support sheet in the support sheet groove is adjusted to provide effective support for different welding parts;

[0021] (3) According to the size of the welding part of the welded part, the number of support sheets is adjusted to provide support sheets of sufficient size for the welding part to meet the requirements of welding shapes of multiple sizes;

[0022] (4) By adjusting the position of the pressing sheet guide pin, the pressing sheet can adapt to the pressing requirements of welded parts of different sizes, and multi-position pressing of welded parts of different sizes can be achieved;

[0023] (5) By adjusting the number of pressing plates and / or the rotation angle, multi-point pressing of the weldment can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] These and / or other aspects and advantages of the present invention will become apparent and easily understood from the following description of the preferred embodiments in conjunction with the accompanying drawings, in which:

[0025] Figure 1 It is a schematic diagram of the principle of pulse hot pressing welding in the prior art;

[0026] Figure 2 It is a structural schematic diagram of a welding fixture for pulse hot pressing welding according to an embodiment of the utility model;

[0027] Figure 3 for Figure 2 A schematic structural diagram of a welding fixture with a welding part placed thereon;

[0028] Figure 4A yes Figure 2 A schematic diagram of the structure of the base and the adjusting rod of the welding fixture shown;

[0029] Figure 4B yes Figure 4A The circled part shown is a schematic diagram of a local enlarged structure;

[0030] Figure 4C yes Figure 4A An enlarged schematic diagram of the structure of the end portion shown;

[0031] Figure 5 yes Figure 2 A side view of the weldment fixture is shown;

[0032] Figure 6 yes Figure 2A side view of a weldment fixture with a silicone pad is shown;

[0033] Fig. 7A yes Figure 4A The structural basis shown shows a schematic diagram of the structure of the support sheet slot and the support sheet;

[0034] Figure 7B yes Fig. 7A Another schematic diagram showing the structure of the supporting sheet groove and the supporting sheet is shown. DETAILED DESCRIPTION

[0035] The following specific examples are used to further illustrate the features of the present invention. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the overall concept of the present invention and should not be construed as a limitation on the present invention.

[0036] See also Figure 2 , shows a schematic structural diagram of a welding fixture 100 for pulse hot pressing welding according to an embodiment of the utility model. Figure 3 , showing Figure 2 The schematic diagram of the structure when the welding part 200 is placed on the welding part fixture 100 is shown.

[0037] Specifically, the welding fixture 100 includes two main components, namely a base 10 and a plurality of adjustment rods 20. As shown in the figure, the base 10 is provided with a plurality of through holes 11. In one embodiment, the plurality of through holes 11 are arranged in an array, that is, in a form of a plurality of rows and columns arranged at equal intervals.

[0038] The plurality of adjustment rods 20 are respectively installed in the plurality of through holes 11 , and the tops of the plurality of adjustment rods 20 support the weldment 200 , and the height of the tops of the plurality of adjustment rods 20 is configured to be consistent with the outer contour of the surface of the weldment 200 .

[0039] exist Figure 3 As shown in the figure, the welding component 200 is a PCB board, and the welding component 200 usually needs to be welded and connected to the FPC flexible circuit board 300.

[0040] In this embodiment, the adjustment rods 20 in the through holes 11 arranged in an array form can be appropriately selected as needed, and different heights can be set based on the shapes of the front and back sides of the welding piece 200, so that the top of the adjustment rod 20 can form a contour that matches the shape of the welding piece 200, so as to support the welding piece 200 when welding the welding piece 200 to the FPC flexible circuit board 300.

[0041] In contrast, as discussed in the background technology, due to the differences in the structure of the welding piece 200 and the mounted electronic devices, each welding piece 200 usually needs to be designed with different support and fixing fixtures according to the actual situation to meet the needs of production or experiments. However, in this embodiment, by using the cooperation of the base 10 and the adjustment rod 20, the positioning support of welding pieces 200 of different shapes can be achieved.

[0042] In order to achieve the upward and downward movement adjustment of the adjusting rod 20, the adjusting rod 20 itself can be configured to be retractable, and of course, it can also be configured to be in other forms.

[0043] In an alternative embodiment, see Figure 4A and Figure 4B The welding fixture 100 further includes: a top screw 30 which is arranged in the plurality of through holes 11 and contacts the bottom end of the adjusting rod 20 and adjusts the height of the adjusting rod 20 by rotating the top screw 30 .

[0044] By setting the top screw 30 at the bottom end of each adjusting rod 20, each top screw 30 can be controlled individually to flexibly adjust the height of each adjusting rod 20, so as to adjust and fix the welding part 200 according to the shape of the welding part 200. In this way, the top end of the adjusting rod 20 can be completely close to the back of the welding part 200. After adjustment, the shape of the plurality of adjusting rods 20 is almost completely consistent with the back shape of the welding part 200.

[0045] In one example, when a protruding device is disposed on the back of the welding piece 200, the height of the adjusting rod 20 at the position corresponding to the protruding device is lowered to avoid damaging the protruding device. On the contrary, the height of the adjusting rod 20 needs to be raised to support the welding piece 200.

[0046] As described above, the welding fixture 100 provided in this embodiment can be flexibly adjusted according to the shape of the welding part 200, thereby meeting the positioning requirements of various welding parts.

[0047] Furthermore, the height of the adjusting rod 20 at different positions can be adjusted according to the positions of different components mounted on the welding piece 200 to provide effective support, thereby meeting various welding shape requirements. Therefore, the welding piece clamp 100 provided by the utility model has the characteristics of flexibility and strong adaptability.

[0048] Return to see Figure 3, the welding fixture 100 also includes at least two pressing plates 40 configured to press the welding part 200 onto the adjusting rod 20. As shown in the figure, the at least two pressing plates 40 are arranged as two left and right pressing plates 40. Of course, those skilled in the art can adjust the left and right pressing plates 40 according to different welding parts 200 to achieve pressing at different positions. In addition, the number of pressing plates 40 can be increased, for example, three or five pressing plates 40 are arranged to achieve pressing at multiple positions, or the pressing at multiple positions can be achieved by rotating the angle of the pressing plates 40.

[0049] In an alternative embodiment, the welding fixture 100 further includes:

[0050] The tablet pressing guide column groove 51 is arranged on two opposite sides of the base 10, for example, on the left and right sides;

[0051] The tablet pressing guide post 52 is arranged in the tablet pressing guide post groove 51 and can move along the tablet pressing guide post groove 51. The lower end of the tablet pressing guide post 52 is movably arranged in the tablet pressing guide post groove 51, and the upper end of the tablet pressing guide post 52 is arranged to be fixedly connected to the first end of the tablet pressing 40.

[0052] See also Figure 4C Furthermore, the tablet pressing guide column groove 51 is configured as a guide column groove with a T-shaped cross section, the lower end of the tablet pressing guide column 52 is also configured as a T-shaped cross section, and the lower end profile of the tablet pressing guide column 52 is matched in the tablet pressing guide column groove 51.

[0053] refer to Figure 5 The upper end of the pressing sheet guide column 52 is provided with a thread 521, and the first end of the pressing sheet 40 is connected to the upper end thread 521 of the pressing sheet guide column 52 through the threaded hole thereon. The degree of compression of the pressing sheet 40 is adjusted by the coaxial rotation of the pressing sheet 40 around the upper end of the pressing sheet guide column 52 to adapt to the compression of weldments 200 of different sizes. Of course, the angle adjustment of the pressing sheet 40 can also be achieved through the above-mentioned coaxial rotation, so as to achieve compression at different positions of the weldment 200.

[0054] See also Figure 6 It can be understood that a silicone pad 60 for contacting the welding piece 200 is provided on the second end (the end at the middle position in the figure) of the pressing piece 40 away from the first end. By adding a small-sized silicone pad 60 or similar material at one end of the pressing piece 40 at the middle position in the figure, the welding piece 200 can be better protected from damage.

[0055] Furthermore, a spring 53 pressed against the first end of the pressing sheet 40 and a nut 54 pressed against the pressing sheet 40 and sleeved on the upper end of the pressing sheet guide pillar 52 are provided on the upper end of the pressing sheet guide pillar 52. The pressure applied by the pressing sheet 40 to the welded part 200 can be adjusted by the cooperation of the spring 53 and the nut 54, so that the force can be better transmitted to the upper surface of the welded part 200 through the pressing sheet 40 to achieve compression and fixation.

[0056] See also Fig. 7A and 7B In order to adjust the support position of the hot pressing welding according to the size of the welding part of the welding piece 200, in one example, the base 10 is further provided with: a support sheet groove 12, the support sheet groove 12 is provided on at least one side of the base 10 (for example, the front side shown in the figure); a support sheet 13, one end of the support sheet 13 is configured to be movable in the support sheet groove 12, and the other end of the support sheet 13 supports the welding part of the welding piece 200 and the flexible circuit board 300. Preferably, the base 10 is also provided with a support sheet baffle 14 to prevent the support sheet 13 from detaching from the support sheet groove 12. The support sheet groove 12 is an L-shaped groove.

[0057] For example, a plurality of support sheet grooves 12 and support sheets 13 located therein can be provided at the front edge of the base 10 as shown in the figure. The support sheets 13 can be moved in the support sheet grooves 12 as needed to meet the requirements of different welding position requirements. At the same time, the number of support sheets 13 can be adjusted according to the size of the welding parts of the welding component 200 and the flexible circuit board 300 so as to better adapt to the structural shape of the welding component 200 and the flexible circuit board 300.

[0058] The welding fixture for pulse hot pressing welding according to the embodiment of the utility model has at least one of the following advantages or part of one of the advantages:

[0059] (1) By adjusting the height of the adjustment rods arranged in the multiple through holes of the base, a contour matching the shape of the welded part is formed according to the different shapes of the welded part surface, thereby achieving support and positioning of welded parts of different shapes;

[0060] (2) According to different welding parts of the welded parts, the position of the support sheet in the support sheet groove is adjusted to provide effective support for different welding parts;

[0061] (3) According to the size of the welding part of the welded part, the number of support sheets is adjusted to provide support sheets of sufficient size for the welding part to meet the requirements of welding shapes of multiple sizes;

[0062] (4) By adjusting the position of the pressing sheet guide pin, the pressing sheet can adapt to the pressing requirements of welded parts of different sizes, and multi-position pressing of welded parts of different sizes can be achieved;

[0063] (5) By adjusting the number of pressing plates and / or the rotation angle, multi-point pressing of the weldment can be achieved.

[0064] The above are only preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. Those skilled in the art will understand that these embodiments can be changed without departing from the principles and spirit of the overall concept of the present invention. These changes should also be considered to fall within the protection scope of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A welding fixture for pulse hot pressing welding, characterized in that: The welding fixture comprises: A base, wherein a plurality of through holes are provided on the base; A plurality of adjustment rods are respectively installed in the plurality of through holes, and the tops of the plurality of adjustment rods support the weldment and the height of the tops of the plurality of adjustment rods is configured to be consistent with the outer contour of the surface of the weldment.

2. The welding fixture according to claim 1, characterized in that: The welding fixture further includes a top screw which is disposed in the plurality of through holes and contacts the bottom end of the adjustment rod and through which the height of the adjustment rod is adjusted by rotation.

3. The welding fixture according to claim 2, characterized in that: The welding part fixture further includes at least two pressing plates configured to press the welding part onto the adjusting rod.

4. The welding fixture according to any one of claims 1 to 3, characterized in that: The welding fixture also includes: Tablet guide slots are provided on two opposite sides of the base; A tablet pressing guide post is arranged in the tablet pressing guide post groove and can move along the tablet pressing guide post groove.

5. The welding fixture according to claim 4, characterized in that: The lower end of the tablet pressing guide post is movably arranged in the tablet pressing guide post groove, and the upper end of the tablet pressing guide post is arranged to be fixedly connected to the first end of the tablet pressing; The tablet pressing guide post groove is configured as a guide post groove with a T-shaped cross section, the lower end of the tablet pressing guide post is also configured as a T-shaped cross section, and the lower end profile of the tablet pressing guide post fits in the tablet pressing guide post groove.

6. The welding fixture according to claim 5, characterized in that: The upper end of the tablet pressing guide pin is provided with a thread, and the first end of the tablet pressing is threadedly connected to the upper end of the tablet pressing guide pin through a threaded hole thereon. The degree of compression of the tablet is adjusted by coaxially rotating the tablet around the upper end of the tablet guide pin.

7. The welding fixture according to claim 6, characterized in that: A silicone pad for contacting a welding piece is arranged on the second end of the pressing sheet away from the first end.

8. The welding fixture according to claim 7, characterized in that: The upper end of the pressing sheet guide pin is provided with a spring pressed against the first end of the pressing sheet and a nut which presses the spring against the pressing sheet and is sleeved on the upper end of the pressing sheet guide pin.

9. The welding fixture according to claim 8, characterized in that: The base is also provided with: A supporting sheet groove, wherein the supporting sheet groove is arranged at a side edge of the base; A supporting sheet, one end of which is arranged to be movable in the supporting sheet groove, and the other end of which supports the welding part of the welding piece.

10. The welding fixture according to claim 9, characterized in that: The base is also provided with a supporting sheet baffle to prevent the supporting sheet from being separated from the supporting sheet slot; The supporting sheet groove is an L-shaped groove; The plurality of through holes are arranged in the form of an array.

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