CN219542141U - Welding fixture applied to chip assembly - Google Patents

Abstract

The utility model discloses a welding fixture applied to a chip assembly, relates to the field of welding processes, and can clamp and fix the chip assembly to ensure the molding quality of the chip assembly in the welding process. Including anchor clamps body, briquetting and stopper, wherein under the clamping condition, briquetting and stopper respectively with the anchor clamps body coupling forms the grip chamber to chip assembly centre gripping is fixed, the grip chamber has a plurality of grip faces, and a plurality of the adaptation of the corresponding side of grip face and chip assembly is used for leaning on each side of chip assembly so that the chip assembly keeps at the best shaping structure in the welding process. According to the utility model, through the cooperation of the clamp body, the pressing block and the limiting block, each part of the chip assembly is always kept in an optimal molding structure in the welding process, so that the molding quality of the finally molded chip assembly is ensured. Meanwhile, the chip component can be welded and formed at one time, and the influence on the performance quality of the product due to multiple times of welding is reduced.

Description

Welding fixture applied to chip assembly

Technical Field

The utility model relates to the field of welding processes, in particular to a welding fixture applied to a chip assembly.

Background

In order to expand the application range of the chip component, a plurality of component chips need to be formed into a chip assembly for use, specifically, a plurality of component chips are stacked and welded to form a chip set, and then lead wires on two sides are led out for use. In the prior art, the chip assembly is manufactured by stacking and pre-welding a plurality of chips; coating solder on the two leads, and fixing the two leads on two sides of the pre-welded and stacked chip through a fixing piece; and finally, performing high-temperature welding by a high-temperature welding furnace to form the chip assembly. Such a welding process is not only cumbersome in the welding process, but also requires a long time, and the welding is performed twice in total, which may cause a risk to the performance quality of the product due to the excessively high temperature generated by the welding twice. In addition, the existing fixing piece cannot ensure the dislocation of the chip, the deflection of the lead and the consistency of the heights of the pins at two sides of the lead welding end in the welding process, and the molding quality of the finally produced chip assembly is difficult to ensure.

Disclosure of Invention

The utility model aims to provide a welding fixture which can clamp and fix a chip assembly and ensure the molding quality of the chip assembly in the welding process.

The utility model is realized by the following technical scheme:

the welding fixture comprises a fixture body, a pressing block and a limiting block, wherein the fixture body, the pressing block and the limiting block can be matched to form a clamping state;

under the clamping state, the pressing block and the limiting block are respectively connected with the clamp body to form a clamping chamber for clamping and fixing the chip assembly, the clamping chamber is provided with a plurality of clamping surfaces, and the clamping surfaces are matched with corresponding side surfaces of the chip assembly and are used for leaning against all side surfaces of the chip assembly so as to enable the chip assembly to be kept in an optimal forming structure in the welding process.

Optionally, the fixture body is provided with a placing station for placing the chip assembly, one side of the placing station is provided with a movable part, the movable part is movably provided with the pressing block, a driving piece is arranged between the pressing block and the fixture body, and the driving piece is used for promoting the pressing block to approach the placing station and clamping two sides of the chip assembly, provided with pins, in cooperation with the fixture body;

the limiting block is detachably connected with the clamp body and is used for being matched with the clamp body and the pressing block to form the clamping chamber.

Further optionally, a slideway is arranged in the movable part, and the pressing block is slidably arranged in the slideway.

Further optionally, the driving piece is an elastic element, one end of the elastic element is arranged on one side of the pressing block away from the placing station, the other end of the elastic element is arranged on the clamp body, and the elastic element always applies elastic force pointing to the placing station to the pressing block.

Further optionally, the pressing block is provided with a pull rod along the sliding direction, and a free end of the pull rod passes through the clamp body and is exposed outside.

Further optionally, the elastic element is a compression spring, and the compression spring is sleeved on the pull rod.

Optionally, one side threaded connection of slide has first fixing bolt, under the clamping state, the screw thread end of first fixing bolt can support and lean on the side of briquetting.

Optionally, be equipped with the slot in the stopper, the anchor clamps body have with the picture peg of slot adaptation, threaded connection has the second fixing bolt on the cell wall of slot, under the clamping state, the picture peg inserts in the slot, just the screw thread end of second fixing bolt can support and lean on the side of picture peg.

Optionally, the chip assembly further comprises a plurality of spacing pieces, wherein the spacing pieces are used for being inserted between adjacent chips in the chip assembly, so that gaps exist at two side edge parts between the adjacent chips, and two ends of the spacing pieces are exposed out of the chip assembly.

Further optionally, the holding chamber has a through hole for the spacer to pass through, and the through hole communicates with the gap.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

according to the utility model, the chip assembly is clamped and limited by the cooperation of the clamp body, the pressing block and the limiting block, so that each part of the chip assembly is always kept in an optimal forming structure in the welding process, and the forming quality of the finally formed chip assembly is further ensured. Meanwhile, the chip component can be molded once in a one-time welding mode, and the influence on the performance and quality of the product due to multiple times of welding is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present utility model, the drawings that are needed in the examples will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and that other related drawings may be obtained from these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a welding jig according to embodiment 1 of the present utility model;

fig. 2 is a schematic structural view of a welding fixture in a clamping state according to embodiment 1 of the present utility model;

FIG. 3 is a schematic diagram illustrating the cooperation between a bonding tool and a chip assembly according to embodiment 1 of the present utility model;

fig. 4 is a schematic diagram illustrating the cooperation between the soldering fixture and the chip assembly in the clamping state according to embodiment 1 of the present utility model;

fig. 5 is a schematic diagram illustrating the cooperation between a chip assembly and a spacer according to embodiment 1 of the present utility model.

In the drawings, the reference numerals and corresponding part names:

the fixture comprises a fixture body, a slide rail, a first fixing bolt, a plug board, a pressing block, a pull rod, a limiting block, a slot, a second fixing bolt, a clamping chamber, a through hole, a chip assembly, a pin and a spacer, wherein the first fixing bolt is 1-the slide rail, the first fixing bolt is 12-the slide rail, the plug board is 13-the pressing block is 2-the slide rail, the pull rod is 21-the limiting block is 3-the slot is 31-the slot, the second fixing bolt is 32-the clamping chamber is 4-the clamping chamber is 41-the through hole is 5-the chip assembly, the chip is 51-the pin is 52-the pin, and the spacer is 6-the spacer.

Detailed Description

For the purpose of making apparent the objects, technical solutions and advantages of the present utility model, the present utility model will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present utility model and the descriptions thereof are for illustrating the present utility model only and are not to be construed as limiting the present utility model.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. However, it will be apparent to one of ordinary skill in the art that: no such specific details are necessary to practice the utility model. In other instances, well-known structures, circuits, materials, or methods have not been described in detail in order not to obscure the utility model.

Throughout the specification, references to "one embodiment," "an embodiment," "one example," or "an example" mean: a particular feature, structure, or characteristic described in connection with the embodiment or example is included within at least one embodiment of the utility model. Thus, the appearances of the phrases "in one embodiment," "in an example," or "in an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combination and/or sub-combination in one or more embodiments or examples. Moreover, those of ordinary skill in the art will appreciate that the illustrations provided herein are for illustrative purposes and that the illustrations are not necessarily drawn to scale. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

In the description of the present utility model, the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present utility model.

Example 1:

a welding fixture applied to a chip assembly, as shown in fig. 1 to 4, comprises a fixture body 1, a pressing block 2 and a limiting block 3, wherein the fixture body 1, the pressing block 2 and the limiting block 3 can be matched to form a clamping state;

in the clamping state, as shown in fig. 2, the pressing block 2 and the limiting block 3 are respectively connected with the fixture body 1 to form a clamping chamber 4 for clamping and fixing the chip assembly 5, the clamping chamber 4 is provided with a plurality of clamping surfaces, and the clamping surfaces are matched with corresponding side surfaces of the chip assembly 5 and are used for abutting against all side surfaces of the chip assembly 5 so as to keep the chip assembly 5 in an optimal forming structure in the welding process.

As shown in fig. 5, the chip assembly 5 includes two pins 52 and a plurality of chips 51 disposed between the two pins 52, wherein the chips 51 are stacked along a direction perpendicular to a connection line of the two pins 52 to form a chipset, and a structure of the chip assembly 5 is a conventional technology of a person skilled in the art, and will not be described herein in detail. The best forming structure of the chip assembly 5 is a product without the defects of dislocation, lead skew, uneven lead pin height, asymmetric lead and the like of the chip 51 after the welding is finished.

Specifically, when the chip assembly 5 is welded, the chip assembly 5 is firstly placed and molded from bottom to top according to the sequence of the pins 52, the solder, the chip set and the solder, the pins 52, the welding fixture and the clamping chamber 4 are connected through the fixture body 1, the pressing block 2 and the limiting block 3 to clamp and fix the chip assembly 5 in the clamping chamber 4, and at the moment, all parts in the chip assembly 5 are limited by all clamping surfaces of the clamping chamber 4 to be kept at fixed point positions, so that the chip assembly 5 can only keep the optimal molding structure. And then the chip assembly 5 communicated with the welding fixture is put into a high-temperature welding furnace, and the welding flux between the pins 52 and the chip assembly is melted by the high Wen Cushi, so that the pins 52 and the plurality of chips 51 stacked together are welded and molded at one time to form the required product.

Therefore, through the cooperation of the clamp body 1, the pressing block 2 and the limiting block 3, the chip assembly 5 is clamped and limited, each part of the chip assembly 5 is always kept in the optimal forming structure in the welding process, and therefore the forming quality of the finally formed chip assembly 5 is ensured, and meanwhile, the chip assembly 5 can be formed at one time in a way of welding through welding solder once, and the influence on the performance quality of products due to multiple times of welding is reduced.

Wherein the clamp body 1 is provided with a placing station for placing the chip assembly 5, one side of the placing station is provided with a movable part, the movable part is movably provided with the pressing block 2, a driving piece is arranged between the pressing block 2 and the clamp body 1, and is used for promoting the pressing block 2 to be close to the placing station and clamping two sides of the chip assembly 5, provided with the pins 52, by being matched with the clamp body 1;

the limiting block 3 is detachably connected with the clamp body 1 and is used for being matched with the clamp body 1 and the pressing block 2 to form the clamping chamber 4.

Specifically, when the chip assembly 5 is placed into the welding fixture, the chip assembly 5 formed by placing is placed in a placing station, then the pressing block 2 is driven by the driving piece to approach the placing station, so that the driving piece and the fixture body 1 clamp two sides of the chip assembly 5 provided with the pins 52, and at the moment, the two pins 52 are tightly attached to the chip 51 under the extrusion of the driving piece and the fixture body 1, thereby realizing the pre-fixing of the chip assembly 5 in the placing station; finally, the limiting piece is connected to the clamp body 1, and other possibly displaced side surfaces of the pre-fixed chip assembly 5 are blocked by the limiting piece, so that the chip assembly 5 is limited in the placing station, and the chip assembly 5 is ensured to be kept in an optimal forming structure in the welding process.

The movable part is connected with the movable connection of the pressing block 2 through a sliding block, specifically, a slide way 11 is arranged in the movable part, and the pressing block 2 is slidably arranged in the slide way 11.

The driving element may be a holding part disposed on the pressing block 2, and the pressing block 2 is driven to move by being held by hand, however, considering that the manual driving cannot ensure that the clamping pressure of the pressing block 2 to the chip assembly 5 is stable, when the pressure is too large, the chip 51 may be damaged, or the solder between the pin 52 and the chip 51 is extruded between the chips 51 under the action of the too large pressure, so that the pin 52 and the chip 51 cannot be firmly welded; based on this, in one or more embodiments, the driving member is an elastic element, one end of the elastic element is disposed on one side of the pressing block 2 away from the placement station, the other end is disposed on the fixture body 1, and the elastic element always applies an elastic force directed to the placement station to the pressing block 2. In this case, by selecting an appropriate elastic member, it is possible to ensure that the pressing block 2 is pressed against the chip assembly 5 appropriately.

On the basis, the pressing block 2 is provided with a pull rod 21 along the sliding direction, and the free end of the pull rod 21 passes through the clamp body 1 and is exposed outside. From this, the operator can drive briquetting 2 through pulling the free end of pull rod 21 and keep away from placing the station, is convenient for put into placing the station with chip subassembly 5.

Wherein the elastic element is a compression spring, which is sleeved on the pull rod 21 (not shown in the figure). The elastic element is thereby prevented from bending under its own elastic force, affecting the pressure it exerts on the press block 2.

In one or more embodiments, a first fixing bolt 12 is screwed on one side of the slideway 11, in a clamped state, a threaded end of the first fixing bolt 12 can tightly lean against a side surface of the pressing block 2, so that the pressing block 2 is fixed, the pressing block 2 is further ensured to be unable to move in a welding process, the clamping strength of the clamping chamber 4 to the chip assembly 5 is further ensured, and the chip assembly 5 is further ensured to be always kept in an optimal forming structure in the welding process.

In one or more embodiments, the limiting block 3 is provided with a slot 31, the fixture body 1 is provided with a plugboard 13 matched with the slot 31, a second fixing bolt 32 is connected to the slot wall of the slot 31 in a threaded manner, in a clamping state, the plugboard 13 is inserted into the slot 31, and the threaded end of the second fixing bolt 32 can tightly lean against the side surface of the plugboard 13. The stopper 3 is thereby detachably connected to the clamp body 1 by the second fixing bolt 32.

In one or more embodiments, a plurality of spacers 6 are further included, and the spacers are used to be inserted between the adjacent chips 51 in the chip assembly 5, so that gaps exist at two side edge portions between the adjacent chips, wherein since the spaces between the pins 52 and the chip set are communicated with the gaps, the solder between the pins 52 and the chip set can enter the gaps after melting, thereby improving the soldering strength between the adjacent chips 51 when soldering is performed. At this time, the two ends of the spacer 6 are exposed outside the chip assembly 5, so that on one hand, the spacer 6 is ensured to be arranged at the middle part between the adjacent chips 51, no solder enters, the use of the chips 51 is prevented from being influenced by melting of the solder at the middle part, and on the other hand, the spacer 6 is conveniently pulled out from between the chips 51 after the subsequent welding is finished.

On this basis, the clamping chamber 4 is provided with a through hole 41 for the spacer 6 to pass through, the through hole 41 is communicated with the gap, the spacer 6 is convenient to pass through the chip assembly 5 through the arrangement of the through hole 41, and meanwhile, heat during high-temperature welding can be uniformly transferred to the welding flux through the gap, so that the melting rate of the welding flux is uniform, and the welding quality is improved.

It should be noted that, the through hole 41 does not refer to the through hole 41 located on a single component, such as the clamp body 1 or the stopper 3, but may also refer to the through hole 41 formed by co-operating a plurality of components.

The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the utility model, and is not meant to limit the scope of the utility model, but to limit the utility model to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims (10)

1. The welding fixture for the chip assembly is characterized by comprising a fixture body (1), a pressing block (2) and a limiting block (3), wherein the fixture body (1), the pressing block (2) and the limiting block (3) can be matched to form a clamping state;

under the clamping state, briquetting (2) and stopper (3) respectively with anchor clamps body (1) are connected, form centre gripping room (4) fixed to chip subassembly (5) centre gripping, centre gripping room (4) have a plurality of grip faces, a plurality of the adaptation of the corresponding side of chip subassembly (5) is used for supporting and leans on each side of chip subassembly (5) so that chip subassembly (5) keep at best shaping structure in the welding process.

2. The welding fixture for chip assemblies according to claim 1, wherein the fixture body (1) is provided with a placement station for placing the chip assemblies (5), one side of the placement station is provided with a movable part, the movable part is movably provided with the pressing block (2), a driving piece is arranged between the pressing block (2) and the fixture body (1) and is used for enabling the pressing block (2) to be close to the placement station and clamping two side surfaces, provided with pins (52), of the chip assemblies (5) in cooperation with the fixture body (1);

the limiting block (3) is detachably connected with the clamp body (1) and is used for being matched with the clamp body (1) and the pressing block (2) to form the clamping chamber (4).

3. The welding fixture for chip assemblies according to claim 2, wherein a slide (11) is provided in the movable part, and the press block (2) is slidably provided in the slide (11).

4. A welding jig for use in a chip assembly according to claim 3, wherein the driving member is an elastic member, one end of the elastic member is provided on a side of the pressing block (2) away from the placing station, the other end is provided on the jig body (1), and the elastic member always applies an elastic force to the pressing block (2) directed toward the placing station.

5. A welding fixture for chip assemblies according to claim 4, characterized in that the press block (2) is provided with a pull rod (21) in the sliding direction, the free end of the pull rod (21) passing through the fixture body (1) and being exposed.

6. The welding fixture for chip assemblies according to claim 5, wherein the elastic element is a compression spring sleeved on the pull rod (21).

7. A welding fixture for chip assemblies according to claim 3, characterized in that one side of the slideway (11) is screwed with a first fixing bolt (12), and in the clamped state the threaded end of the first fixing bolt (12) can abut against the side of the press block (2).

8. The welding fixture for chip assemblies according to claim 2, characterized in that the limiting block (3) is provided with a slot (31), the fixture body (1) is provided with a plugboard (13) matched with the slot (31), a second fixing bolt (32) is connected to the slot wall of the slot (31) in a threaded mode, the plugboard (13) is inserted into the slot (31) in a clamping mode, and the threaded end of the second fixing bolt (32) can abut against the side face of the plugboard (13).

9. The welding fixture for chip assemblies according to claim 1, further comprising a plurality of spacers (6) for being inserted between adjacent chips (51) in the chip assembly (5) such that gaps exist at both side edge portions between the adjacent chips (51), and both ends of the spacers (6) are exposed outside the chip assembly (5).

10. A soldering fixture for chip assemblies according to claim 9, characterized in that the clamping chamber (4) has a through hole (41) for the spacer (6) to pass through, the through hole (41) being in communication with the gap.