CN207925519U - A kind of steel mouth for LED bonding equipments - Google Patents

Abstract

The utility model is related to a kind of steel mouths for LED bonding equipments, including steel mouth ontology, the steel mouth ontology includes the through-hole passed through for bonding wire, bonding wire is pressed on into the bottom surface on welding surface and side, the through-hole is through to from the side of steel mouth ontology is inclined on bottom surface, also there is a U-type groove on the bottom surface, the U-type groove is connected on bottom surface with through-hole, the width of the U-type groove is less than the diameter of bonding wire, and the depth of the U-type groove is less than the diameter of bonding wire, it is insufficient to be easy to cause bonding wire pulling force when solving existing steel mouth welding, solder joint is not full, the bad problem of rosin joint.

Description

A kind of steel mouth for LED bonding equipments

Technical field

The utility model is related to LED welding technology fields, are specifically related to a kind of steel mouth for LED bonding equipments.

Background technology

The whole world advocate low-carbon, energy-saving and environmental protection theme under, LED as novel backlight and lighting source It is constantly ripe with it is perfect.LED welding is an important ring in LED productions, directly the quality of decision LED performances.

LED welding refers to being connected chip with holder with metal fine, to realize technique that chip is connect with exposed electrical Process.Traditional bonding equipment, what is used in wire bonding process is mostly a kind of straight steel mouth, and this straight steel mouth be easy to cause bonding wire drawing Power is insufficient, solder joint is not full, rosin joint is bad, segment chip open circuit can occur after encapsulation, to influence the normal use of LED.

Utility model content

The utility model is intended to provide a kind of steel mouth for LED bonding equipments, which increases on the bottom surface of steel mouth ontology A U-type groove is added so that solder joint forms a raised reinforcing rib, to solve to be easy to cause bonding wire drawing when existing steel mouth welds The problem that power is insufficient, solder joint is not full, rosin joint is bad.

Concrete scheme is as follows：

A kind of steel mouth for LED bonding equipments, including steel mouth ontology, the steel mouth ontology include leading to for what bonding wire passed through Bonding wire is pressed on the bottom surface on welding surface and side by hole, and the through-hole is through to bottom from the side of steel mouth ontology is inclined On face, also there is a U-type groove, the U-type groove to be connected to through-hole on bottom surface on the bottom surface, the width of the U-type groove is less than weldering The diameter of line, and the depth of the U-type groove is less than the diameter of bonding wire.

Further, the bottom surface of the steel mouth ontology is made of a planar portions and an inclined plane part, planar portions and inclined plane part it Between arc transition, the U-type groove is located in planar portions.

Further, the inclined angle of the inclined plane part is between 10-15 °.

Further, the angle between the axis and bottom surface of the through-hole is between 38-45 °.

Further, the steel mouth ontology is a column structure, and the cross section of the column structure is major arc arch, the steel The arcuate flanks of mouth ontology are collected toward bottom direction from the center.

A kind of steel mouth for LED bonding equipments provided by the utility model has the following advantages compared with prior art： In the forming process of solder joint, the U-type groove in steel mouth portion makes a kind of steel mouth for LED bonding equipments provided by the utility model Solder joint forms a raised reinforcing rib so that has better binding force, and its solder joint tail between the solder joint and welding surface Silk also unobvious.

Description of the drawings

Fig. 1 shows the side view of steel mouth ontology.

Fig. 2 shows the enlarged drawings of steel mouth body bottom portion.

Fig. 3 shows the schematic diagram of steel mouth ontology bottom surface.

Fig. 4 shows the solder joint figure welded using straight steel mouth.

Fig. 5 shows the solder joint figure of the steel mouth welding using the application.

Fig. 6 shows steel mouth ontology front view.

Fig. 7 shows the schematic diagram of Fig. 6 section A-As.

Specific implementation mode

To further illustrate that each embodiment, the utility model are provided with attached drawing.These attached drawings are in the utility model discloses A part for appearance mainly to illustrate embodiment, and can coordinate the associated description of specification to explain that the running of embodiment is former Reason.Cooperation refers to these contents, and those of ordinary skill in the art will be understood that other possible embodiments and this practicality are new The advantages of type.Component in figure is not necessarily to scale, and similar component symbol is conventionally used to indicate similar component.

The utility model is further illustrated in conjunction with the drawings and specific embodiments.

As shown in Figure 1-Figure 3, the utility model provides a kind of steel mouth for LED bonding equipments, which includes steel mouth Ontology 1 has the through-hole 2 passed through for bonding wire on the steel mouth ontology, bonding wire is pressed on to bottom surface 10 and side on welding surface Face 12, the through-hole 2 are through to from the side 12 of steel mouth ontology 10 is inclined on bottom surface 10, also U-shaped with one on the bottom surface Slot 3, the U-type groove 3 are connected on bottom surface with through-hole 2, and the width of the U-type groove 3 is less than the diameter of bonding wire, and the U-type groove 3 Depth be less than bonding wire diameter.Participate in Fig. 2, bonding wire is passed through from through-hole 2 on bottom surface 10, and when welding, bonding wire is welded in bottom surface To welding surface, a raised reinforcing rib can be formed due to the presence of U-type groove 3, on solder joint.

With reference to figure 4 and Fig. 5, wherein Fig. 4 be use conventional straight steel mouth (i.e. the bottom surface of steel mouth for plane, without U-type groove in embodiment) solder joint picture after welding, the solder joint after being welded using straight steel mouth is in flat wedge shape, and solder joint tail Silk protrusion.Fig. 5 is using the solder joint picture after the steel mouth welding in the present embodiment, and the U-type groove of the steel mouth makes solder joint form one The reinforcing rib of item protrusion, solder joint are also more full so that have better binding force between the solder joint and welding surface, reduce weldering The problem of line pulling force is insufficient, solder joint is not full and rosin joint, and its solder joint tailfiber also unobvious.

With reference to figure 2, the bottom surface 10 of the steel mouth ontology 1 is made of a planar portions 10a and an inclined plane part 10b, planar portions 10a The arc transition between inclined plane part 10b, the U-type groove 3 are located in planar portions.Bottom surface is by planar portions 10a and inclined plane part 10b groups At, it is possible to reduce the contact area of bottom surface and welding surface can be subjected on the smaller pad of area, and solder joint It can also smaller.Wherein, it is preferred that the inclined angle [alpha] of the inclined plane part 10b 1 is between 10-15 °.

With reference to figure 2, the angle α 2 between the axis and bottom surface of the through-hole 2 is between 38-45 °, in order to bonding wire It is mobile.

With reference to figure 1, Fig. 6 and Fig. 7, the steel mouth ontology 1 is a column structure, and the cross section of the column structure is bent for major arc The arcuate flanks of shape, the steel mouth ontology are collected toward bottom direction from the center, i.e., the side of the steel mouth ontology 1 includes one vertical Face and an arc surface, vertical plane can constitute rectangle in order to the contraposition of steel mouth, the arcuate flanks of steel mouth ontology from vertical plane Other three directions are chamfer from middle part toward bottom direction so that steel mouth ontology is collected from middle part toward bottom so that steel mouth sheet The bottom of body is smaller, makes that it is suitable for the welding of smaller size of chip, and can also reduce steel mouth in welding to other The interference of element.

Although specifically showing and describing the utility model in conjunction with preferred embodiment, those skilled in the art answers This is understood, in the spirit and scope for not departing from the utility model defined by the appended claims, in form and details On the utility model can be made a variety of changes, be the scope of protection of the utility model.

Claims (5)

1. a kind of steel mouth for LED bonding equipments, it is characterised in that：Including steel mouth ontology, the steel mouth ontology includes for bonding wire Bonding wire is pressed on the bottom surface on welding surface and side by the through-hole that passes through, and the through-hole is inclined from the side of steel mouth ontology It is through on bottom surface, also there is a U-type groove, the U-type groove to be connected to through-hole on bottom surface, the width of the U-type groove on the bottom surface Degree is less than the diameter of bonding wire, and the depth of the U-type groove is less than the diameter of bonding wire.

2. steel mouth according to claim 1, it is characterised in that：The bottom surface of the steel mouth ontology is by a planar portions and an inclined-plane Portion forms, and arc transition between planar portions and inclined plane part, the U-type groove is located in planar portions.

3. steel mouth according to claim 2, it is characterised in that：The inclined angle of inclined plane part is between 10-15 °.

4. steel mouth according to claim 1, it is characterised in that：Angle between the axis and bottom surface of the through-hole between Between 38-45 °.

5. steel mouth according to claim 1, it is characterised in that：The steel mouth ontology is a column structure, the column structure Cross section be major arc arch, the arcuate flanks of the steel mouth ontology collect toward bottom direction from the center.