Wire welding mechanism

Abstract

The embodiment of the utility model provides a wire bonding mechanism, which is used for chip wire bonding and comprises a carrier strip and a fishbone jig fixed on the carrier strip, the device further comprises a limiting assembly for limiting the fishbone jig, and the limiting assembly can apply acting force to the upper end face of the fishbone jig so that the fishbone jig can be kept to be tightly attached to the carrying strip. According to the carrying strip, the limiting assembly is arranged on the carrying strip, the head of the pressing claw of the limiting assembly is driven by the driving part to press the area between the two adjacent discharging positions of the fishbone fixture, so that it is guaranteed that the fishbone fixture can be reliably and stably attached to the carrying strip in the wire welding process, and the problem that due to the temperature influence, the fishbone fixture deforms and warps, and the welding precision is poor is solved.

Description

Technical Field

[0001] The utility model relates to the field of optical communication manufacturing, and particularly relates to a wire bonding mechanism. Background Art

[0002] The COC (Chip On Carrier) packaging process is a commonly used semiconductor packaging process. It is a lead-free packaging technology that can effectively reduce environmental pollution and improve the reliability and stability of semiconductor devices.

[0003] COC refers to setting a chip on a specific patch area of a substrate by using processes such as molten eutectic. Since the substrate and chip of COC are very small, the packaging process needs to be carried out on a special jig. The existing special fishbone jig for COC has a high clamping capacity and can complete wire bonding. In order to place the fishbone jig in a track for wire bonding, a carrier strip capable of carrying the fishbone jig is required. However, during the wire bonding process, problems such as the middle arching and deformation of the fishbone jig due to temperature changes often occur, affecting the wire bonding accuracy. Summary of the Utility Model

[0004] The utility model provides a wire bonding mechanism to solve the problems of arching, deformation, and inconvenient disassembly of the fishbone jig during the wire bonding process in the prior art.

[0005] To solve the above problems, the technical solution adopted by the utility model is as follows:

[0006] The utility model provides a wire bonding mechanism for chip wire bonding, which includes a carrier strip and a fishbone jig fixed on the carrier strip; it also includes a limiting component for limiting the fishbone jig, and the limiting component can apply a force to the upper end surface of the fishbone jig to keep the fishbone jig tightly attached to the carrier strip.

[0007] Further, the limiting component includes a limiting part and a driving part that drives the limiting part to press on the fishbone jig in a rotating manner.

[0008] Preferably, for the guiding component, an external force can push the limiting part to move along the extension direction of the guiding component, so that the limiting part approaches the fishbone jig and is partially or entirely located above the fishbone jig, and the driving part drives the limiting part to press on the fishbone jig.

[0009] Further, the limiting part includes a limiting plate and a plurality of press claws arranged side by side. Each press claw is connected to the limiting plate through a supporting section. The cross-section of the supporting section gradually increases from the root of the press claw to the limiting plate, and the whole from the supporting section to the top of the press claw inclines downward; a plurality of feeding positions are arranged side by side on the fishbone jig, and the root of the press claw presses on the gap between the feeding positions.

[0010] Preferably, the limiting plate, the press claws, and the supporting section are integrated.

[0011] Further, the driving part includes a rotating shaft and a rotating member, an eccentric member is arranged on the rotating shaft; a rotating hole is provided in the middle of the limiting plate; the rotating member is connected to the eccentric member, the rotating shaft passes through the rotating hole, and the eccentric member is located in the rotating hole.

[0012] Further, the guiding assembly includes a plurality of guiding rods arranged side by side, an elastic member is sleeved on the guiding rod, a plurality of limiting holes are arranged on the limiting plate, the guiding rod passes through the limiting hole, and the elastic member keeps pressing the limiting plate in a direction away from the fishbone jig.

[0013] Preferably, the pressing claw is made of a high-temperature resistant and low-magnetic material.

[0014] Preferably, the limiting assembly is symmetrically arranged on both sides of the fishbone jig.

[0015] Preferably, the carrier strip can carry at least one fishbone jig.

[0016] Compared with the prior art, the present utility model has the following beneficial effects:

[0017] A wire bonding mechanism provided by the present utility model, through the limiting assembly arranged on the carrier strip, drives the pressing claw head of the limiting assembly by the driving part to press the area between two adjacent feeding positions of the fishbone fixture, so as to ensure that when wire bonding, the fishbone jig can be reliably and stably attached to the carrier strip, avoiding the problem that the fishbone jig is deformed and warped due to temperature influence, resulting in poor welding accuracy. In addition, the setting of the guiding assembly can enable the limiting assembly to quickly enter the pressing position or withdraw from the pressing position, saving installation time and improving the clamping efficiency. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions proposed by the present utility model, the following will be described in detail in combination with embodiments and drawings. It should be understood that the drawings in the following description are only some embodiments of the present utility model, and those skilled in the art can make changes to these drawings under the concept of the present utility model.

[0019] Figure 1 It is an assembled three-dimensional view of a wire bonding mechanism provided by the present utility model;

[0020] Figure 2 It is a partial assembled three-dimensional view of the carrier strip provided by the present utility model;

[0021] Figure 3 It is an assembled three-dimensional view of the fishbone jig provided by the present utility model;

[0022] Figure 4 It is an assembled three-dimensional view of the limiting part provided by the present utility model.

[0023] 1. Carrier strip; 11. Limiting part; 111. Limiting plate; 112. Pressing claw; 113. Supporting section; 114. Rotating hole; 115. Limiting hole; 12. Driving part; 121. Rotating shaft; 122. Rotating part; 123. Eccentric part; 13. Guiding component; 131. Guiding rod; 132. Elastic part; 14. First fixing part; 141. Protrusion; 142. First fixing hole; 143. Rounded corner; 2. Fishbone jig; 21. Feeding position; 22. Second fixing part; 221. Second fixing hole; 222. Third fixing hole. Detailed implementation manners

[0024] The following will clearly and completely describe the technical solutions in the embodiments with reference to the accompanying drawings in the embodiments of the present invention. Similar component labels in the drawings represent similar components. Obviously, the embodiments described below are only a 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 those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] It should be understood that when used in this specification and the appended claims, the terms "comprises" and "comprising" indicate the presence of the described features, wholes, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0026] It should also be understood that the terms used in the specification of the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present invention. As used in the specification of the embodiments of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are intended to include the plural forms.

[0027] Please refer to Figure 1 , a wire bonding mechanism provided by the present invention for chip wire bonding, includes a carrier strip 1 and a fishbone jig 2 fixed on the carrier strip 1; it further includes a limiting component for limiting the fishbone jig 2, and the limiting component can apply a force to the upper end surface of the fishbone jig 2 to keep the fishbone jig 2 tightly attached to the carrier strip 1. The limiting components are symmetrically arranged on both sides of the fishbone jig 2, and the carrier strip 1 can carry at least one fishbone jig 2. When wire bonding, the fishbone jig 2 is installed in the carrier strip 1.

[0028] Please refer to Figure 4, in this embodiment, the limiting component includes a limiting portion 11 and a driving portion 12 that drives the limiting portion 11 to press against the fishbone jig 2 in a rotating manner. The limiting portion 11 includes a limiting plate 111 and a plurality of pressing claws 112 arranged side by side. Each pressing claw 112 is connected to the limiting plate 111 through a supporting section 113. The cross-section of the supporting section 113 gradually increases from the root of the pressing claw 112 to the limiting plate 111, and the whole of the supporting section 113 to the top of the pressing claw 112 inclines downward; a plurality of material placing positions 21 are arranged side by side on the fishbone jig 2. The root of the pressing claw 112 presses the gap between each material placing position 21. Chips are placed at the material placing positions 21. The pressing claw 112 presses between two adjacent material placing positions, so that the fishbone jig fits on the carrier strip 1, which can prevent the phenomenon of warping and unevenness of the material placing positions 21 during the wire bonding process; the limiting plate 111, the pressing claw 112, and the supporting section 113 are integrated, with high processing accuracy. The pressing claw 112 is made of a material that is heat-resistant, low-magnetic, and has a certain elasticity, and can be non-magnetic steel.

[0029] Please refer to Figure 2 , in this embodiment, an external force of the guiding component 13 can push the limiting portion 11 to move along the extending direction of the guiding component 13, so that the limiting portion 11 approaches the fishbone jig 2 and is partially or entirely located above the fishbone jig 2, and the driving portion 12 drives the limiting portion 11 to press against the fishbone jig 2. Specifically, in this embodiment, the driving portion 12 includes a rotating shaft 121 and a rotating member 122. An eccentric member 123 is arranged on the rotating shaft 121; a rotating hole 114 is provided in the middle of the limiting plate 111; the rotating member 122 is connected to the eccentric member 123, and the rotating shaft 121 passes through the rotating hole 114, and the eccentric member 123 is located in the rotating hole 114. That is to say, when the rotating shaft 121 rotates, it will drive the eccentric member 123 to rotate in the rotating hole 114. Through the extrusion of the eccentric member on the rotating hole 114, the limiting plate 111 is further pushed to move downward, and then the pressing claw 112 is driven to press down and press tightly on the fishbone jig, thereby completing the limiting. The guiding component 13 includes a plurality of guiding rods 131 arranged side by side. An elastic member 132 is sleeved on the guiding rods 131. A plurality of limiting holes 115 are arranged on the limiting plate 111. The guiding rods 131 pass through the limiting holes 115, and the elastic member 132 keeps elastically pressing the limiting plate 111 in a direction away from the fishbone jig 2, and can quickly perform a reset action. Of course, it should be noted that considering that the driving portion 12 rotates and then drives the limiting plate 111 to move downward, the limiting holes 115 will move downward synchronously. However, the position of the guiding rods 131 is fixed, and the guiding rods 131 will limit the movement of the limiting plate 111. Therefore, in this embodiment, it is preferably that the aperture of the limiting holes 115 is larger than the diameter of the guiding rods 131, and the specific size is subject to ensuring that the downward movement distance of the limiting plate 111 is not interfered by the guiding rods 131; of course, the limiting holes 115 can also be set as waist-shaped holes to meet the displacement space required for the up and down movement of the limiting plate.

[0030] Please refer to Figure 3 In this embodiment, a first fixing portion 14 is provided on the carrier strip 1. A first fixing hole 142 is provided in the middle of the first fixing portion 14, and bumps 141 are provided on both sides of the first fixing hole 142. A second fixing portion 22 is provided in the middle of the fishbone jig 2. The second fixing portion 22 includes a second fixing hole 221, a third fixing hole 222, and a first fixing member. The first fixing member passes through the first fixing hole 142 and the second fixing hole 221 to complete the central fixing of the fishbone jig 2 and the carrier strip 1. The diameter of the second fixing hole 222 is larger than the diameter of the bump 141. The bump 141 is placed into the second fixing hole 221 to further complete the positioning of the fishbone jig 2 and the carrier strip 1, preventing the fishbone jig 2 from shifting during the wire bonding process. The first fixing portion 14 is further provided with a plurality of rounded corners 143, which are provided at the four corners of the fishbone jig 2 to prevent interference between the fishbone jig 2 and the carrier strip 1.

[0031] In the above embodiments, the descriptions of the various embodiments have their own focuses. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0032] In the present utility model, unless otherwise clearly defined and limited, the first feature being “on” or “under” the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being “above”, “over” and “on top of” the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being “under”, “below” and “beneath” the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0033] In the description of this specification, the description with reference to terms such as “one embodiment”, “some embodiments”, “example”, “specific example”, or “some examples” means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0034] As described above, the above is the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A wire bonding mechanism for chip wire bonding, characterized in that, It includes a carrier strip and a fishbone fixture fixed to the carrier strip; it further includes a limiting component for limiting the fishbone fixture, and the limiting component can apply a force to the upper end face of the fishbone fixture so that the fishbone fixture remains tightly attached to the carrier strip.

2. The wire bonding mechanism according to claim 1, wherein, The limiting component includes a limiting part and a driving part that drives the limiting part to press against the fishbone fixture in a rotating manner.

3. The wire bonding mechanism according to claim 2, wherein, It further includes a guiding component, and an external force can push the limiting part to move along the extending direction of the guiding component so that the limiting part approaches the fishbone fixture and is partially or entirely located above the fishbone fixture, and the driving part drives the limiting part to press against the fishbone fixture.

4. The wire bonding mechanism according to claim 3, characterized in that, The limiting part includes a limiting plate and a plurality of claws arranged side by side. Each claw is connected to the limiting plate through a supporting section. The cross-section of the supporting section gradually increases from the root of the claw to the limiting plate, and the whole from the supporting section to the top of the claw inclines downward; a plurality of feeding positions are arranged side by side on the fishbone fixture, and the head of the claw contacts the upper end face of the area between two adjacent feeding positions.

5. The wire bonding mechanism according to claim 4, characterized in that, The limiting plate, the claw and the supporting section are integrated.

6. The wire bonding mechanism according to claim 5, wherein The driving part includes a rotating shaft and a rotating part, and an eccentric part is arranged on the rotating shaft; a rotating hole is provided in the middle of the limiting plate; the rotating part is connected to the eccentric part, the rotating shaft passes through the rotating hole, and the eccentric part is located in the rotating hole.

7. The wire bonding mechanism according to claim 6, wherein The guiding component includes a plurality of guiding rods arranged side by side, and an elastic part is sleeved on the guiding rods; a plurality of limiting holes are arranged on the limiting plate, the guiding rods pass through the limiting holes, and the elastic part keeps elastically pressing the limiting plate in a direction away from the fishbone fixture.

8. The wire bonding mechanism according to claim 5, characterized in that, The claw is made of a material with high temperature resistance and low magnetism.

9. The wire bonding mechanism according to any one of claims 1-8, characterized in that, The limiting components are symmetrically arranged on both sides of the fishbone fixture.

10. The wire bonding mechanism according to claim 9, wherein, The carrier strip can carry at least one fishbone fixture.

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