CN110398657A - Measured value needle and measuring mechanism - Google Patents

Abstract

Embodiments of the present invention provide a measuring needle and a measuring mechanism, which relate to the field of surface mount technology. The utility model relates to a value measuring needle, which is used for measuring the value of electronic components on a material tape, and an encapsulating film for encapsulating the electronic components is also arranged on the material tape, and the value measuring needle includes a mounting part and a flat measuring part. One end of the mounting piece is used to be mounted on the needle lowering mechanism. The measuring part includes a connecting part and a measuring part. The connecting part is connected to the mounting part. The measuring part is connected to the side of the connecting part away from the mounting part and used for measuring the electronic components. The measuring part is wedge-shaped and used to penetrate the packaging film. The thickness of the connection part is 0.5mm-1mm. The present invention also provides a measuring mechanism, which adopts the above measuring needle. The value measuring needle and the measuring mechanism provided by the invention can facilitate measurement, and can improve measurement accuracy and measurement stability.

Description

Measuring needle and measuring mechanism

technical field

The invention relates to the field of surface mount technology, in particular to a measuring needle and a measuring mechanism.

Background technique

The SMT (Surface Mount Technology) industry has developed rapidly in China in recent years. In the process of development, people's requirements for product quality and structural framework are constantly improving, and surface mount technology is advancing to passive components, and surface mount components are getting smaller and smaller.

The most troublesome problem in the SMT industry at this stage is that there are more and more electronic components, the size is getting smaller and the quality is getting higher and higher, which requires the factory to strictly control the quality of the incoming materials. At present, most SMT factories need to manually inspect the incoming materials. The specific process: get the material tray to be tested, tear open the packaging plastic mold, take out the material to be tested under the magnifying glass and put it in a specific detection position, and then find it through the magnifying glass. Quasi-polarity measuring points, hand-held bridge measuring pens to measure and record the value.

Contents of the invention

Objects of the present invention include, for example, providing a measuring needle which can facilitate measurement and can improve measurement accuracy and measurement stability.

The purpose of the present invention is also to provide a measuring mechanism, which can facilitate the measurement, and can improve the measurement accuracy and measurement stability.

Embodiments of the present invention can be realized like this:

An embodiment of the present invention provides a value-measuring needle for measuring the value of electronic components on a material tape, and an encapsulation film for encapsulating the electronic components is provided on the material tape, and the value-measuring needle includes a mounting part and a A flat measuring piece.

One end of the mounting part is used to be mounted on the needle lowering mechanism.

The measuring part includes a connecting part and a measuring part, the connecting part is connected to the mounting part, the measuring part is connected to the side of the connecting part away from the mounting part and used for measuring the electronic components, The measuring portion is wedge-shaped and used to penetrate the packaging film.

The thickness of the connecting part is 0.5mm-1mm.

Optionally, the mounting part has a width greater than that of the connecting part, and the width of the connecting part is equal to the width of the measuring part.

Optionally, the measuring portion has a width of 0.2mm-1mm.

Optionally, the length of the measuring portion is 0.5mm-1.5mm.

Optionally, the length of the measuring portion is 1mm or 1.2mm.

Optionally, the measuring portion is provided with a first slope and a second slope, the first slope and the second slope are connected to form a wedge shape, and the angle between the first slope and the second slope is 20°-60°.

Optionally, the measuring piece has a length of 1.5mm-3mm.

Optionally, the mounting part and/or the measuring part are made of carbon steel, copper or iron.

Optionally, the measuring needle further includes an isolation layer, and the isolation layer covers the outside of the mounting part and/or the measuring part.

A measuring mechanism includes a measuring needle. The measuring needle is used for measuring the value of the electronic components on the material tape, and the measuring needle includes a mounting part and a flat measuring part. One end of the mounting part is used to be mounted on the needle lowering mechanism. The measuring part includes a connecting part and a measuring part, the connecting part is connected to the mounting part, the measuring part is connected to the side of the connecting part away from the mounting part and used for measuring the electronic components, The measuring portion is wedge-shaped. The thickness of the connecting part is 0.5mm-1mm.

Compared with the prior art, the beneficial effects of the measuring needle of the embodiment of the present invention include, for example:

The measuring needle provided by the present invention can penetrate the encapsulation film through the wedge-shaped measuring part, and directly measure the value of the electronic components inside the encapsulation film, saving the cost and time of tearing off the encapsulation film for detection and finally packaging, The detection efficiency of the electronic components on the tape is improved, and by setting the thickness of the connection part to 0.5mm-1mm, the appropriate thickness of the connection part can be selected for various electronic components of different sizes, which can facilitate the detection of electronic components of various sizes. Measured value, and then achieve the purpose of improving the convenience of the value needle.

The beneficial effect of the measurement mechanism provided by the present invention relative to the prior art is the same as that of the value measuring needle provided above relative to the prior art, and will not be repeated here.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 is a schematic structural view of the value measuring needle provided in the embodiment of the present invention when measuring a value;

Fig. 2 is a structural schematic diagram of the first viewing angle of the measuring needle provided in the first embodiment of the present invention;

Fig. 3 is a structural schematic diagram of the second viewing angle of the measuring needle provided in the first embodiment of the present invention;

Fig. 4 is a schematic structural view of the third viewing angle of the measuring needle provided in the first embodiment of the present invention.

Icons: 1-electronic component; 2-encapsulation film; 10-measurement needle; 100-installation part; 110-installation side; 200-measurement part; 210-connection part; 220-measurement part; 222 - Second slope.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present invention, it should be noted that if the orientation or positional relationship indicated by the terms "upper", "lower", "inner" and "outer" appear, it is based on the orientation or positional relationship shown in the drawings, or It is the orientation or positional relationship that the invention product is usually placed in use, and it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation , and therefore cannot be construed as a limitation of the present invention.

In addition, terms such as "first" and "second" are used only for distinguishing descriptions, and should not be understood as indicating or implying relative importance.

It should be noted that, in the case of no conflict, the features in the embodiments of the present invention may be combined with each other.

first embodiment

Please refer to Fig. 1, a measuring needle 10 is provided in this embodiment, the measuring needle 10 is used for measuring the value of the electronic component 1 on the material tape, and the measuring needle 10 can facilitate the measuring of the electronic component 1 , and can improve measurement accuracy and measurement stability. And, in this embodiment, the measuring pin 10 is used to be installed on the measuring mechanism (not shown), the measuring mechanism is provided with a lower needle mechanism (not shown), and the measuring needle 10 is installed on the lower needle mechanism , so that the measuring needle 10 is driven to move by the needle lowering mechanism, and the electronic component 1 is measured.

Among them, the material tape refers to the carrier used to carry the electronic component 1 to be mounted in the surface mount technology (SMT, Surface Mounting Technology), that is, in the process flow of the surface mount technology, the material tape needs to be used as a The carrier of the electronic component 1 to be mounted transports the electronic component 1 to a designated station, and mounts the electronic component 1 on the surface of the printed circuit board through a corresponding mechanism. Wherein, an encapsulating film 2 for encapsulating the electronic components 1 is also arranged on the material tape, and the encapsulating film 2 can be a film for encapsulating such as a plastic film or a paper film.

It should be noted that, in this embodiment, the size of the electronic component 1 used for detection by the measuring needle 10 is generally 0.2mm*0.4mm. Moreover, when testing the electronic component 1, it is necessary to use two measuring needles 10 to detect the electronic component 1, and the two measuring needles 10 are respectively placed at both ends of the electronic component 1, so that the electronic component 1 can be tested. value. In addition, it should be noted that the measuring needle 10 can be connected with other measuring instruments (not shown in the figure), so as to obtain the data after testing the electronic component 1 through the measuring instrument, and then determine whether the electronic component 1 is qualified. Wherein, the value measuring instrument may be an LCR meter, a multimeter, an impedance analyzer, an oscilloscope, a network analyzer, or a comprehensive tester.

In this embodiment, please refer to FIG. 2 , the measuring probe 10 includes a mounting part 100 and a measuring part 200 . Wherein, the mounting part 100 is used to be installed on the needle lowering mechanism, and the measuring part 200 is used to contact the electronic component 1 and detect the electronic component 1 . Optionally, one end of the mounting part 100 is used to be installed on the lower needle mechanism, and the measuring part 200 is connected to the other end of the mounting part 100. At this time, the mounting part 100 can be driven by the needle lowering mechanism, and then the measuring part can be driven by the mounting part 100 200 measures the value of the electronic component 1 .

Wherein, please refer to FIGS. 1-3 . In this embodiment, the measuring piece 200 is flat, so that the measuring piece 200 can easily penetrate the packaging film 2 and extend into the packaging film 2 to measure the value of the electronic component 1 .

It should be noted that, in this embodiment, the thickness of the measuring piece 200 is the same as that of the mounting piece 100, and the two opposite sides of the mounting piece 100 are respectively flush with the two opposite sides of the measuring piece 200 , and make the measuring needle 10 overall flat. In addition, in this embodiment, the mounting part 100 and the measuring part 200 are connected in an integrated manner. It should be understood that, in other embodiments, the mutual connection between the measuring part 200 and the mounting part 100 may also be realized by clamping or bonding.

Please refer to Fig. 2 and Fig. 4 in combination, one end of the mounting part 100 for mounting the measuring part 200 is provided with a mounting side 110, the measuring part 200 is arranged on the mounting side 110, and the measuring part 200 is located in the middle of the mounting side 110, so as to When the measuring needle 10 is in contact with the electronic component 1 , the stress between the mounting part 100 and the measuring part 200 is uniform, and the bending and fracture of the measuring part 200 is not easy to be caused, thereby improving the stability of the measuring part 200 . It should be understood that in other embodiments, the measuring piece 200 may also be arranged at other positions of the installation side 110 , for example, the measuring piece 200 is arranged at a position corresponding to one-third of the length of the installation side 110 .

Further, the measuring part 200 includes a connecting part 210 and a measuring part 220 . The connecting part 210 is connected to the mounting part 100 , the measuring part 220 is connected to the side of the connecting part 210 away from the mounting part 100 , and the measuring part 220 is used to contact the electronic component 1 to realize the measurement of the electronic component 1 . It should be noted that, in this embodiment, the connecting part 210 and the measuring part 220 are connected to each other in an integrated manner.

Optionally, in this embodiment, the measurement portion 220 is wedge-shaped, so that when the packaged electronic component 1 is detected, the wedge-shaped measurement portion 220 can penetrate the packaging film 2 and extend into the interior of the packaging film 2, Furthermore, the measurement of the electronic component 1 is realized by the measuring part 220 contacting the electronic component 1 . And through the setting method of the wedge-shaped measuring part 220, when the two measuring parts 220 are in common contact with the electronic component 1, the tips of the two wedge-shaped measuring parts 220 can contact the electronic component 1, so as to avoid mutual occurrence between the two measuring parts 220. In the case of contact or mutual resistance, it can be ensured that the two measuring needles 10 can provide an efficient and stable measuring effect on the electronic component 1 and improve the validity of the measuring value.

It should be noted that, please refer to FIG. 1 and FIG. 2 in conjunction, where the measuring part 220 is wedge-shaped means that the opposite sides of the measuring part 220 are respectively provided with a first inclined surface 221 and a second inclined surface 222, and the first inclined surface 221 and the second inclined surface 222 are connected at the end of the measuring portion 220 away from the connecting portion 210 to form a wedge shape, and meanwhile the cross section of the measuring portion 220 is triangular. It should be noted that, wherein, the first slope 221 and the second slope 222 are connected to form an intersection line, and the intersection line is parallel to the side surface of the connecting portion 210 in the thickness direction. It should be understood that, in this embodiment, the cross section of the measuring portion 220 is an isosceles triangle, that is, the length of the first slope 221 is the same as that of the second slope 222, and the intersection line of the first slope 221 and the second slope 222 corresponds to The connection part 210 is the middle part of the two side faces which are arranged oppositely. It should be understood that, from other embodiments, the length of the first slope 221 and the length of the second slope 222 may also be different, for example, the cross-section of the measurement part 220 is a right triangle.

In this embodiment, please refer to FIGS. 2-4 in combination, the thickness of the connecting portion 210 is 0.5mm-1mm. It should be noted that, in this embodiment, the measuring part 220 is a wedge-shaped structure disposed at the end of the connecting part 210, that is, the thickness of the measuring part 220 gradually decreases from the end close to the connecting part 210 to the end far away from the connecting part 210. , that is, in this embodiment, the thickness of the measuring portion 220 is less than or equal to the thickness of the connecting portion 210 . When the thickness of the connecting portion 210 is 0.5 mm, it is used for measuring the value of the electronic component 1 with a smaller size at this time; when the thickness of the connecting portion 210 is 1 mm, it is used for the measuring value of the electronic component 1 with a larger size at this time . That is, the thickness dimensions of the connecting portion 210 and the measuring portion 220 can be set to various specifications to adapt to electronic components 1 of various specifications, so that when it is necessary to measure the electronic component 1 of one specification, it can Selecting the measuring needle 10 of the connection part 210 and the measuring part 220 with an appropriate thickness to measure the electronic component 1 can improve the accuracy and efficiency of measuring the electronic component 1 . That is, in this embodiment, the thickness of the connecting portion 210 may also be 0.6 mm, 0.8 mm, or 0.9 mm. It should be understood that, in this embodiment, the thickness of the mounting part 100 is the same as that of the measuring part 200 , that is, the thickness of the mounting part 100 is the same as that of the connection part 210 .

Optionally, the width of the measuring portion 220 is 0.2mm-1mm. In order to improve the penetration ability of the measurement part 220 into the packaging film 2 , to improve the penetration efficiency of the measurement part 220 into the packaging film 2 , and to reduce the degree of damage to the packaging film 2 . Wherein, the width of the measurement part 220 may be 0.2 mm, 0.5 mm or 0.8 mm, etc. FIG.

Optionally, the length of the measuring portion 220 is 0.5mm-1.5mm. So that the measuring part 220 can have a sufficient length to contact the electronic component 1 after penetrating the packaging film 2 , and avoid damage to the packaging film 2 caused by the mounting part 100 after the measuring part 220 contacts the electronic component 1 . At the same time, the measuring part 220 can be made to have sufficient strength, thereby avoiding the situation that the measuring part 220 is easily bent and broken. Wherein, the length of the measuring part 220 may be 1mm, 1.2mm, 0.8mm or 1.5mm, etc. It should be noted that when the length of the measurement portion 220 is 1 mm or 1.2 mm, the measurement portion 220 has sufficient strength and can have sufficient length to contact the electronic component 1 .

Further, the length of the whole measuring piece 200 is 1.5mm-3mm. Wherein, the length of the measuring part 200 is equal to the length of the connecting part 210 plus the length of the measuring part 220 . Wherein, when the length of the measuring piece 200 is between 1.5mm-3mm, it can make the measuring piece 200 have a sufficient length so as to facilitate contact with the electronic component 1 and at the same time avoid the reduction of the strength of the measuring piece 200, and at the same time avoid when the measuring piece 200 comes into contact with The package film 2 is damaged by the mount 100 behind the electronic component 1 . Wherein, the length of the measuring piece 200 may be 1.5mm, 1.8mm, 2mm, 2.5mm or 3mm, etc.

Further, the angle between the first slope 221 and the second slope 222 is 20°-60°, so that the measuring part 220 is in contact with the electronic component 1, and the effective contact between the measuring part 200 and the electronic component 1 is improved, Thereby improving the accuracy and stability of the measured value.

Optionally, please continue to refer to FIG. 1. In this embodiment, the angle between the first slope 221 and the second slope 222 is 36°. At this time, the measuring part 220 can quickly penetrate the packaging film 2, and can ensure Good contact stability between the measuring part 220 and the electronic component 1 . It should be understood that in other embodiments, the angle between the first slope 221 and the second slope 222 may also be set to other values, for example, 30°, 40° or 45°. If the angle between the first slope 221 and the second slope 222 is increased, that is, the angle between the first slope 221 and the second slope 222 is greater than 36°, the rate at which the measuring portion 220 penetrates the packaging film 2 will be reduced. , while the damage to the packaging film 2 increases; if the angle between the first slope 221 and the second slope 222 is reduced, that is, the angle between the first slope 221 and the second slope 222 is less than 36°, then it will be Reducing the stability of the contact between the measuring part 220 and the electronic component 1 will reduce the accuracy of the measuring part 220 on the electronic component 1 .

Further, the mounting part 100 and/or the measuring part 200 are made of carbon steel, copper or iron. Optionally, in this embodiment, the mounting part 100 and/or the measuring part 200 are made of medium carbon steel. The mounting part 100 and/or the measuring part 200 are made of medium carbon steel. It means that the setting method of the mounting part 100 and the measuring part 200 can be as follows: the mounting part 100 is made of medium carbon steel, and the measuring part 200 is made of other materials. Or, the measuring part 200 is made of medium carbon steel, and the mounting part 100 is made of other materials; or, both the mounting part 100 and the measuring part 200 are made of medium carbon steel. Optionally, in this embodiment, the mounting part 100 and the measuring part 200 are integrally formed, that is, the mounting part 100 and the measuring part 200 are both made of medium carbon steel. It should be understood that in other embodiments, the mounting part 100 and/or the measuring part 200 may also be made of copper or iron, or the mounting part 100 and/or the measuring part 200 may also be made of other conductive materials.

Further, please refer to FIG. 2-FIG. 4 in conjunction, the measuring needle 10 further includes an isolation layer (not shown in the figure), and the isolation layer covers the outside of the mounting part 100 and/or the measuring part 200 . That is, the arrangement of the isolation layer can be as follows: the isolation layer is only coated on the outside of the mounting part 100; or, the isolation layer is only coated on the outside of the measuring part 200; or, the insulating layer is coated on the mounting part 100 and the measuring part at the same time 200 outside. In this embodiment, an isolation layer is adopted to cover the outer sides of the mounting part 100 and the measuring part 200 at the same time. It should be noted that, in this embodiment, the isolation layer can conduct electricity, so that the measuring part 200 can detect the electronic component 1 . Optionally, in this embodiment, the isolation layer is a gold-plated layer coated on the outside of the entire measuring needle 10. Since the chemical properties of the gold-plated layer are relatively stable and have strong electrical conductivity, the service life of the measuring needle 10 can be greatly extended. , and ensure the stability of the measured value of the measuring needle 10. It should be understood that in other embodiments, the isolation layer may also use a silver plating layer or the like.

In summary, the measuring needle 10 provided in this embodiment can penetrate the packaging film 2 through the measuring portion 220 in the shape of a wedge, and directly measure the electronic component 1 on the material tape inside the packaging film 2, saving The cost and time of tearing off the packaging film 2 for inspection and finally packaging can improve the inspection efficiency of the electronic component 1 on the tape, and by setting the thickness of the connecting part 210 to 0.5mm-1mm, it can be used for multiple components of different sizes. Selecting an appropriate thickness of the connecting portion 210 for various electronic components 1 can facilitate the measurement of electronic components 1 of various sizes, thereby achieving the purpose of improving the convenience of the measuring needle 10 .

second embodiment

This embodiment provides a measuring mechanism (not shown in the figure), which can be used to measure the value of the electronic component 1 on the material tape, which uses the measuring needle 10 provided in the first embodiment. Wherein, the measuring mechanism includes a lower needle mechanism and a measuring needle 10, and the measuring needle 10 is installed on the lower needle mechanism, so that the movement of the lower needle mechanism drives the measuring needle 10 to measure the value of the electronic component 1. The measuring mechanism can facilitate measurement, and can improve measurement accuracy and measurement stability.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. All should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (10)

1. A measuring needle, used for measuring the value of electronic components on the material tape, said material tape is also provided with a packaging film for encapsulating said electronic components, it is characterized in that said measuring needle comprises a mounting part and a flat measuring pieces; One end of the mounting part is used to be installed on the lower needle mechanism; The measuring part includes a connecting part and a measuring part, the connecting part is connected to the mounting part, the measuring part is connected to the side of the connecting part away from the mounting part and used for measuring the electronic components, The measuring portion is wedge-shaped and used to penetrate the packaging film; The thickness of the connecting part is 0.5mm-1mm. 2 . The measuring needle according to claim 1 , wherein the width of the mounting part is larger than the width of the connecting part, and the width of the connecting part is equal to the width of the measuring part. 3 . 3. The measuring needle according to claim 1, characterized in that, the width of the measuring portion is 0.2mm-1mm. 4. The measuring needle according to claim 1, characterized in that, the length of the measuring portion is 0.5mm-1.5mm. 5. The measuring needle according to claim 4, characterized in that, the length of the measuring portion is 1 mm or 1.2 mm. 6. The measuring needle according to claim 1, characterized in that, the measuring part is provided with a first slope and a second slope, the first slope and the second slope are connected to form a wedge, and the The angle between the first slope and the second slope is 20°-60°. 7. The measuring needle according to claim 1, characterized in that, the length of the measuring piece is 1.5mm-3mm. 8. The measuring needle according to any one of claims 1-7, characterized in that, the mounting part and/or the measuring part are made of carbon steel, copper or iron. 9. The measuring needle according to any one of claims 1-7, characterized in that, the measuring needle further comprises an isolation layer, and the isolation layer covers the mounting part and/or the measurement outside of the piece. 10. A measuring mechanism, characterized by comprising the measuring needle according to any one of claims 1-9.