Vacuum suction nozzle

Abstract

The utility model provides a vacuum suction nozzle. The vacuum suction nozzle is used for adsorbing a winding, the winding is provided with an annular surface, the vacuum suction nozzle comprises a body, and an air channel is arranged in the body; the adsorption surface is arranged on the surface of the body, the adsorption surface comprises an annular inclined surface, and the rising angle of the annular inclined surface is matched with the annular surface of the winding; and one or more adsorption holes are formed in the annular inclined surface and are communicated with the gas path channel. According to the technical scheme, the annular inclined surface matched with the annular surface of the winding in shape is arranged on the adsorption surface, so that the attaching area of the adsorption surface and the annular surface of the winding is increased, and the adsorption stability is improved; and the arc-shaped adsorption holes with larger sizes are adopted to replace traditional point-shaped adsorption holes, so that the vacuum area of the vacuum suction nozzle is increased, larger adsorption force is provided, and the problem of material falling caused by smaller adsorption force of the vacuum suction nozzle is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of chip package especially relates to a vacuum nozzle. BACKGROUND

[0002] The new power management chip needs to be wound with surface mount technology (Surface Mount Technolog, SMT for short), and the traditional SMT vacuum nozzle sucks the corresponding positions of the winding group through four vacuum holes on the suction surface. Since the vacuum holes are relatively small, the suction force of the vacuum nozzle on the winding is low, the winding is unstable, and the material is prone to falling off; in addition, when the suction position deviates, the vacuum is easily broken and the material is prone to falling off.

[0003] Therefore, how to improve the problem of material falling off caused by low suction force of the vacuum nozzle on the winding or deviation of the suction position is a problem to be solved at present. SUMMARY

[0004] The utility model solves the technical problem that how to improve the problem of material falling off caused by low suction force of the vacuum nozzle on the winding or deviation of the suction position, and provides a kind of vacuum nozzle.

[0005] In order to solve the above problems, the utility model provides a kind of vacuum nozzle for adsorbing winding, the winding has a ring surface, the vacuum nozzle includes a body, and the body is provided with a gas passage; Suction surface is arranged on the surface of the body, the suction surface includes a ring inclined surface, and the rising angle of the ring inclined surface is adapted to the ring surface of the winding;A plurality of arc suction holes are arranged on the ring inclined surface, and the arc suction hole is communicated with the gas passage.

[0006] In some embodiments, the arc suction hole acts on the ring surface of the winding.

[0007] In some embodiments, the arc suction hole is three, and is evenly arranged along the ring inclined surface.

[0008] In some embodiments, the lowest part of the ring inclined surface is connected with the highest part, and the highest part is a circular chamfer.

[0009] In some embodiments, the suction surface further includes a fixing part located in the ring inclined surface and protruding from the surface of the body.

[0010] In some embodiments, the fixing part is a circular table-shaped boss.

[0011] In some embodiments, the fixing part is a spherical cap boss.

[0012] In some embodiments, when the vacuum nozzle adsorbs the winding, the fixing part is embedded in the winding to fix the winding.

[0013] In some embodiments, the highest point of the fixing member is higher than the highest point of the annular slope.

[0014] The technical scheme has the advantages that the annular slope with a shape suitable for the annular surface of the winding is arranged on the adsorption surface, the fitting area of the adsorption surface and the annular surface of the winding is increased, the stability of adsorption is increased, the arc-shaped adsorption hole with a large size is used to replace the traditional point-shaped adsorption hole, the vacuum area of the vacuum nozzle is increased, a large adsorption force is provided, and the problem of material dropping caused by a small adsorption force of the vacuum nozzle is avoided.

[0015] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory and are not restrictive of the application. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail because such techniques, methods, and apparatus are considered to be part of the patent specification. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application, the drawings needed in the description of the specific embodiments will be briefly introduced. Obviously, the drawings in the following description are only some specific embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor.

[0017] Figure 1 is a top view of a vacuum nozzle.

[0018] Figure 2 is a top view of a winding.

[0019] Figure 3 is a top view of an embodiment of the vacuum nozzle according to the present application.

[0020] Figure 4 is a sectional view along the direction of AA'. Figure 3

[0021] Figure 5 is a structural schematic view of the winding according to the present application.

[0022] Figure 6 is a side view of the winding according to the present application.

[0023] Figure 7 is a top view of another embodiment of the vacuum nozzle according to the present application.

[0024] Figure 8 is a sectional view along the direction of BB'. Figure 7 DETAILED DESCRIPTION​​

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0026] Please refer to Figures 1-2 , wherein, Figure 1 is a top view of a vacuum nozzle; Figure 2 is a top view of a winding. As Figure 1 shown, the vacuum nozzle comprises a body 11 and four adsorption surfaces 12 protruding from the surface of the body 11, wherein each of the adsorption surfaces 12 comprises a vacuum hole, and the four adsorption surfaces 12 comprise four vacuum holes, respectively indicated by reference numerals A, B, C and D.

[0027] As Figure 2 shown, the winding comprises an inclined adsorption surface 21, and the four vacuum holes of the vacuum nozzle act on the adsorption surface 21 of the winding, and the corresponding adsorption positions of the four vacuum holes A, B, C and D on the adsorption surface 21 of the winding are A', B', C' and D' respectively, as Figure 2 shown.

[0028] The vacuum nozzle only relies on the vacuum suction of the four vacuum holes to adsorb the winding. Since the vacuum holes are small, the suction force of the vacuum nozzle on the winding is low, the adsorption of the winding is unstable, and the problem of dropping is prone to occur. In addition, when the adsorption position of the vacuum hole of the vacuum nozzle is offset, there is also a risk of dropping.

[0029] In order to solve the problem of dropping caused by low suction force or adsorption position offset of the vacuum nozzle on the winding, an embodiment of the present application provides a vacuum nozzle. Please refer to Figures 3-6 , wherein, Figure 3 is a top view of an embodiment of the vacuum nozzle of the present application; Figure 4 is Figure 3 a sectional view in AA' direction;

[0030] Figure 5 is a structural schematic view of the winding of the present application; Figure 6 is a side view of the winding of the present application.

[0031] As Figures 3-6As shown, the vacuum nozzle is used for adsorbing the winding, the winding has a ring surface 51, the vacuum nozzle comprises: a body 31, an adsorption surface 32. The body 31 is provided with a gas path channel (not shown). The adsorption surface 32 is arranged on the surface of the body 31, the adsorption surface 32 is a ring inclined surface, and the rising angle of the ring inclined surface is adapted to the ring surface 51 of the winding. The adsorption surface 32 is provided with one or more adsorption holes 33, and the adsorption holes 33 are communicated with the gas path channel.

[0032] The technical scheme increases the fitting area of the adsorption surface of the nozzle and the ring surface of the winding by arranging the ring inclined surface on the adsorption surface, which is adapted to the ring surface of the winding, thereby increasing the stability of adsorption.

[0033] As shown in the drawings, Figures 3-6 In some embodiments, the adsorption hole 33 is an arc-shaped adsorption hole, and the arc-shaped adsorption hole acts on the ring surface 51 of the winding. A plurality of arc-shaped adsorption holes occupy most of the area of the ring surface 51 of the winding, and provide sufficient adsorption force to avoid the problem of material falling due to small adsorption force of the vacuum nozzle. The vacuum nozzle provided by the utility model adopts the arc-shaped adsorption hole with large size to replace the traditional point-shaped adsorption hole, thereby increasing the vacuum area of the vacuum nozzle, providing large adsorption force, and avoiding the problem of material falling due to small adsorption force of the vacuum nozzle.

[0034] In some embodiments, the arc-shaped adsorption hole is three, and is uniformly arranged along the ring inclined surface. The arc-shaped adsorption hole with large area is uniformly arranged along the ring inclined surface, which can not only provide sufficient adsorption force, but also ensure the uniformity of force of the winding, thereby enhancing the stability of adsorption and reducing the risk of material falling.

[0035] In some embodiments, the lowest part 321 and the highest part 322 of the adsorption surface 32 are connected end to end, and the highest part 322 is a circular chamfer. The adsorption surface 32 uniformly spirally rises from the lowest part 321, and reaches the highest point at the joint with the projection of the lowest part 321, that is, the highest part 322. The height difference between the lowest part 321 and the highest part 322 depends on the height difference between the highest point and the lowest point of the ring surface 51 of the winding, so as to adapt to the shape of the ring surface 51 of the winding, increase the fitting area of the adsorption surface 32 and the ring surface 51 of the winding, and increase the stability of adsorption. In addition, in order to avoid the interference between the highest part 322 of the adsorption surface 32 and the highest point of the winding during suction, the highest part 322 of the adsorption surface 32 is provided with a circular chamfer, and the circular chamfer can also play a positioning role when the vacuum nozzle is pressed to adsorb the winding.

[0036] In some embodiments, the vacuum suction nozzle further comprises a fixing member 34 protruding from the surface of the body 31 and surrounded by the suction surface 32. The fixing member 34 gradually decreases in area of each cross section parallel to the surface of the body 31 from the side close to the body 31 to the side away from the body 31. As shown in Figure 4 the fixing member 34 is a circular frustum-shaped protrusion in this embodiment. A curved surface formed by rotating the other sides of a right trapezoid with the straight line where the two parallel sides lie as the rotation axis is called a circular frustum. The rotation axis is called the axis of the circular frustum. The two circular surfaces formed by rotating the upper and lower parallel sides of the right trapezoid are called the upper and lower bases of the circular frustum. The curved surface formed by rotating the other side of the right trapezoid is called the side of the circular frustum. The length of the other side of the right trapezoid at each position on the side of the circular frustum is called the generatrix of the circular frustum. The length of the other side of the right trapezoid on the axis of the circular frustum is called the height of the circular frustum. The height of the circular frustum is also the distance between the upper and lower bases. The circular frustum can also be considered as the part of a circular cone cut by two vertical planes, so it can also be called a "truncated cone".

[0037] The fixing member 34 has a structure of being smaller at the top and larger at the bottom. When the vacuum suction nozzle sucks the winding, the fixing member 34 is embedded in the winding to fix the winding. The fixing member 34 can limit the position of the winding on the vacuum suction nozzle to ensure that the winding will not shift in position when vibration occurs, thereby avoiding material dropping due to the shift of the suction position of the vacuum suction nozzle.

[0038] In some embodiments, the highest position 341 of the fixing member 34 is higher than the highest position 322 of the annular inclined surface.

[0039] Please refer to Figures 7-8 , wherein Figure 7 is a top view of another embodiment of the vacuum suction nozzle of the utility model; Figure 8 is Figure 7 a sectional view along the direction of BB'. Figures 7-8 The embodiment shown in Figures 3-4 differs from the embodiment shown in that the fixing member 34 is a spherical crown-shaped protrusion. A spherical crown refers to the curved surface left after a sphere is cut by a plane. The spherical crown is a curved surface and a part of a sphere. The circular surface cut is the base, and the part cut perpendicularly to the diameter of the circular surface is the height. It can also be considered as the surface obtained by rotating the diameter of a circle around one of its endpoints. The fixing member 34 in this embodiment is hemispherical. The fixing member 34 has a structure of being smaller at the top and larger at the bottom. When the vacuum suction nozzle sucks the winding, the fixing member 34 is embedded in the winding to fix the winding. The fixing member 34 can limit the position of the winding on the vacuum suction nozzle to ensure that the winding will not shift in position when vibration occurs, thereby avoiding material dropping due to the shift of the suction position of the vacuum suction nozzle.

[0040] In some other embodiments, the fixing member 34 can also be a structure with equal width from top to bottom, such as a cylinder, that is, the area of each cross section of the fixing member 34 parallel to the surface of the body 31 is equal. The fixing member 34 with equal width from top to bottom can also be embedded into the winding when the vacuum suction nozzle suctions the winding, and plays a role of fixing the winding.

[0041] The technical scheme described above increases the fitting area of the suction surface and the annular surface of the winding by setting the annular inclined surface with a shape suitable for the annular surface of the winding on the suction surface, and increases the stability of suction; and the arc-shaped suction hole with large size is used to replace the traditional point-shaped suction hole, so as to increase the vacuum area of the vacuum suction nozzle, provide larger suction force, and avoid the problem of dropping caused by smaller suction force of the vacuum suction nozzle. In addition, the fixing member protruding from the surface of the body is arranged in the annular inclined surface, and is embedded into the winding when the vacuum suction nozzle suctions the winding, so as to fix the winding, limit the position of the winding on the vacuum suction nozzle, and ensure that the position of the winding will not be deviated when vibration occurs, thereby avoiding the problem of dropping caused by deviation of the suction position of the vacuum suction nozzle.

[0042] It should be noted that reference to "one embodiment", "an embodiment", "example embodiment", "some embodiments" etc. in the specification indicates that a described embodiment can include a particular feature, structure, or characteristic, but every embodiment can not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, where a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of those skilled in the relevant art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

[0043] Generally, terms can be understood to be contextually used. For example, the term "one or more", as used in this text, can be used to describe any feature, structure, or characteristic in the singular or can be used to describe combinations of features, structures, or characteristics in the plural, depending at least partly on the context in which the term is used. Similarly, terms such as "a", "an", or "the" also can be understood to express a singular usage or to express a plural usage, depending at least partly on the context in which the terms are used. Further, the term "based on" can be understood as not necessarily requiring exclusively factual factors, but instead can also, depending at least partly on the context, permit that other factors exist which are not explicitly described. It should also be noted in the description that "connected" or "coupled" not only means that one component is directly coupled to another component, but also means that one component is indirectly coupled to another component through an intermediate component.

[0044] It should be noted that the terms "comprising" and "having" and their variants involved in the file of the present application are intended to cover non-exclusive inclusion. The terms "first", "second" and the like are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence, unless the context clearly indicates otherwise, and it should be understood that such data used in this way can be interchanged under appropriate circumstances. In addition, the embodiments and features in the embodiments in the present application can be combined with each other without conflict. Furthermore, in the above description, the description of known components and technologies is omitted to avoid unnecessary confusion of the concept of the present application. In the above embodiments, each embodiment focuses on the difference from other embodiments, and the same / similar parts between the embodiments can be referred to each other.

[0045] The above is only the preferred embodiment of the present application, and it should be noted that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which should be considered as the protection scope of the present application.

Claims

1. A vacuum nozzle for suction of a winding having an annular surface, characterized in that The application relates to a kind of winding device for winding coil, comprising: A body, wherein a gas passage is arranged in the body; An adsorption surface is arranged on the surface of the body, the adsorption surface is an annular inclined surface, and the rising angle of the annular inclined surface is adapted to the annular surface of the winding; one or more adsorption holes are arranged on the adsorption surface, and the adsorption holes are communicated with the gas passage.

2. The vacuum nozzle of claim 1, wherein, The adsorption hole is an arc-shaped adsorption hole.

3. The vacuum nozzle of claim 2, wherein, The arc-shaped adsorption hole is three, and is uniformly arranged along the annular inclined surface.

4. The vacuum nozzle of claim 1, wherein, The lowest part and the highest part of the adsorption surface are connected end to end, and the highest part is a circular chamfer.

5. The vacuum nozzle of claim 1, wherein, Further comprising a fixing member, which protrudes from the surface of the body and is surrounded by the adsorption surface.

6. The vacuum nozzle of claim 5, wherein, The area of each cross section of the fixing member parallel to the surface of the body gradually decreases from the side close to the body to the side away from the body.

7. The vacuum nozzle of claim 6, wherein, The fixing member is a circular truncated cone-shaped boss.

8. The vacuum nozzle of claim 6, wherein, The fixing member is a spherical cap boss.

9. The vacuum nozzle of claim 5, wherein, The area of each cross section of the fixing member parallel to the surface of the body is equal.

10. The vacuum nozzle of claim 5, wherein, The highest part of the fixing member is higher than the highest part of the annular inclined surface.

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