A polarity detection device for a diode product

Abstract

The utility model relates to the polar detection technical field, concretely relates to a kind of polarity detection device of diode product, comprising: detection piece, as the component for detecting the polarity of the product to be detected;Pressing piece, as the component for pressing and limiting the product to be detected;Polarity detection device has detection state, in detection state, the detection end of the detection piece contacts the pin structure of the product to be detected, and the pin structure is between the detection end and the pressing end of the pressing piece;The detection end and the pressing end can rotate around its own axis. The present application improves the detection rate of the product to be detected by the above improvement, and the improvement cost is lower.

Description

Technical Field

[0001] This utility model relates to the field of polarity detection technology, specifically to a polarity detection device for diode products. Background Technology

[0002] In electronic device manufacturing, the correct polarity of diodes directly affects the normal operation of circuits. For axial diodes in tape and reel packaging, incorrect polarity increases the cost of subsequent automated assembly and the difficulty of maintenance. Currently, polarity detection methods based on the forward conduction and reverse cutoff characteristics of diodes are widely used. By applying voltage and detecting current, polarity is determined with high accuracy.

[0003] However, in actual production, the surface of the tape and reel products is uneven after manual folding. During inspection, the raised parts of the tape and reel cause insufficient contact between the diode pin structure and the detection electrode, leading to missed detections and increasing the product defect rate.

[0004] Therefore, how to overcome the shortcomings of the existing technology mentioned above has become the subject of this utility model. Utility Model Content

[0005] The purpose of this invention is to provide a polarity detection device for diode products.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A polarity detection device for a diode product, comprising:

[0008] A testing component, used to detect the polarity of a product under test;

[0009] Pressing components, used to press and limit the position of products to be tested;

[0010] The polarity detection device has a detection state. In the detection state, the detection end of the detection element contacts the pin structure of the product to be detected, and the pin structure is located between the detection end and the pressing end of the pressing element.

[0011] Both the detection end and the pressing end can rotate around their own axis.

[0012] In the testing state, the pressing end of the pressing component is above the testing end.

[0013] This application uses a diode as the product to be tested, but is not limited to testing other objects. The diode has two leads, which form the lead structure described above.

[0014] The actual testing device is the testing component, which is a conventional setup. This application only makes certain adjustments to the existing testing device in some embodiments, but the testing principle remains unchanged. Specifically, it uses the forward conduction and reverse cutoff characteristics of a diode for testing, which is the existing testing principle and will not be explained in detail here.

[0015] It should be noted that the clamping component can be understood as being used to clamp the diode in conjunction with the detection component. Specifically, it can be understood as the clamping component and the detection component contacting the diode from both sides, rather than restricting the movement of the diode.

[0016] During the testing process, a testing space is formed between the pressing end of the pressing component and the testing end of the testing component. Due to the limiting effect of the pressing end, when the diode passes through the testing space, its pins can contact the testing end to complete the polarity test, thus avoiding the situation where some diodes are not tested.

[0017] The detection end can rotate around its own axis, which causes the contact points between the electrodes and pins on the surface of the detection end to change continuously. This avoids poor contact or local wear that may be caused by fixed contact points, and helps to improve the accuracy and stability of the detection.

[0018] Both the detection end and the pressing end can rotate around their own axis, reducing the resistance experienced by the product to be tested and thus increasing the testing speed.

[0019] In summary, this application improves the detection rate of the products to be tested through the above-mentioned improvements, and the improvement cost is low.

[0020] In a further technical solution, the pressing component includes two pressing bearings arranged side by side in a first direction, and the two pressing bearings constitute the pressing end;

[0021] The first direction is parallel to the horizontal direction.

[0022] The two press bearings correspond to the two pins of the diode. The two press bearings respectively make the two pins fit with the detection end, ensuring that the pin structure on the diode is fully fitted with the detection end, so as to avoid some diodes being missed.

[0023] In a further technical solution, the pressing component includes a support portion and a connecting portion, and the pressing end is connected to the support portion through the connecting portion;

[0024] In the detection state, the connecting part can move vertically relative to the supporting part.

[0025] The support section supports the pressing end through the connecting section.

[0026] The connecting part can be vertically adjusted relative to the supporting part, thereby adjusting the distance between the detection end and the pressing end to accommodate products of different sizes and expand the scope of application of this application.

[0027] A further technical solution also includes a support base, wherein the detection end is rotatably mounted on the support base;

[0028] One end of the support is rotatably mounted on the support base, and the other end of the support is connected to the support base via a first threaded structure or a first magnetic attraction structure.

[0029] The support base supports both the detection end and the support part at least simultaneously, ensuring stable detection.

[0030] The support is rotatable (achieved via a hinge structure), allowing the pressing end to be transferred during stages when it is not required.

[0031] After threaded or magnetic connection, stable pressing of the pressing end can be achieved without affecting the subsequent transfer of the pressing end.

[0032] In a further technical solution, the detection element includes two detection wheels that are spaced apart and coaxially arranged side by side in a first direction, and the two detection wheels constitute the detection end, wherein the first direction is parallel to the horizontal direction;

[0033] In the detection state, the two detection wheels rotate synchronously around their own axes.

[0034] The detection wheel can rotate around its own axis. During rotation, the contact points between the electrodes and pins on the surface of the detection wheel constantly change, avoiding poor contact or localized wear that may occur with fixed contact points, thus improving the accuracy and stability of the detection. Furthermore, it reduces the resistance experienced by the product under test, thereby increasing the detection speed.

[0035] In a further technical solution, the detection component also includes two guide rods arranged side by side in a second direction;

[0036] The second direction is parallel to the horizontal direction and perpendicular to the first direction.

[0037] The guide rod can guide the tape, making it easy to plan the movement path of the tape according to the needs.

[0038] A further technical solution is that, in the vertical direction, the bottom surface of the guide rod is at a lower height than the top surface of the detection wheel;

[0039] And / or, the guide rod is provided with an annular groove, the axis of which is parallel to the first direction.

[0040] Using the guide rod as a round rod and the detection wheel as a round wheel for explanation, along the vertical direction, the lowest point of the round rod is at a lower height than the highest point of the round wheel.

[0041] By limiting the relative height between the guide rod and the detection wheel, the tape unwinds and moves in a parabolic shape, resulting in a larger contact area and a longer contact time between the pins and the detection end, thus further improving the accuracy of the detection.

[0042] The diode includes a body and leads located at both ends of the body. As is the case, an annular groove is provided corresponding to the body. When the tape is unpacked and moved, the body passes through the annular groove without contacting the surface of the guide rod, thus avoiding bending of the leads due to the interaction between the body and the guide rod, thereby preventing damage to the diode.

[0043] A further technical solution also includes a polarity detection line connected to the pressing end, the polarity detection line being used in conjunction with the pressing end to detect the polarity of the product to be tested.

[0044] The combination of the pressing end and the polarity detection line is equivalent to the combination of the detection wheel and the wire mentioned above, which is equivalent to setting up a second set of detection structures. The two sets of detection structures work together to detect polarity. For example, when the diode is tilted, one end of the diode contacts one of the detection wheels and the other end contacts one of the pressing bearings. At this time, polarity detection can also be achieved, further avoiding the situation where some diodes are not detected.

[0045] A further technical solution also includes a support member, which is disposed on the side of the detection end;

[0046] In the testing state, the support member contacts the pin structure of the product to be tested.

[0047] Here, we introduce the aforementioned support base and detection wheels for explanation: The two detection wheels are rotatably mounted on the support base. The support includes two support plates, which are respectively set between the main structure (wheel-shaped structure) of the two detection wheels and the support base. It can be regarded as the support plates and detection wheels forming a larger detection structure, which increases the support surface of the detection structure on the pin structure. Since the pin structure is relatively soft, this can prevent the diode from bending.

[0048] The terms "first," "second," etc., used in this article do not specifically refer to order or sequence, nor are they intended to limit this case; they are merely used to distinguish components or operations described using the same technical terms.

[0049] The terms "connection" or "positioning" as used in this article can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, or to two or more components or devices operating or moving with each other.

[0050] The terms “include,” “including,” and “have” used in this article are all open-ended, meaning they include but are not limited to.

[0051] Unless otherwise specified, the terms used herein generally have their ordinary meaning in the context of the art, the subject matter, and the specific context. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the case.

[0052] The terms “front,” “back,” “up,” “down,” “left,” and “right” used in this article are directional terms. In this case, they are only used to describe the positional relationship between the structures and are not intended to limit the specific direction of the protection scheme or its actual implementation.

[0053] The working principle and advantages of this utility model are as follows:

[0054] During the testing process, a testing space is formed between the pressing end of the pressing component and the testing end of the testing component. Due to the limiting effect of the pressing end, when the diode passes through the testing space, its pins can be in contact with the testing end to complete the polarity test, thus avoiding the situation where some diodes are not tested.

[0055] The detection end can rotate around its own axis, which causes the contact points between the electrodes and pins on the surface of the detection end to change continuously. This avoids poor contact or local wear that may be caused by fixed contact points, and helps to improve the accuracy and stability of the detection.

[0056] Both the detection end and the pressing end can rotate around their own axis, reducing the resistance experienced by the product to be tested and thus increasing the testing speed.

[0057] In summary, this application improves the detection rate of products to be tested and reduces the defect rate through the above improvements, while the improvement cost is relatively low. Attached Figure Description

[0058] Figure 1 This is a schematic diagram of the overall structure of the polarity detection device according to an embodiment of the present invention;

[0059] Figure 2 This is one of the partial structural schematic diagrams of the polarity detection device according to an embodiment of the present utility model;

[0060] Figure 3 This is a second partial structural schematic diagram of the polarity detection device according to an embodiment of the present invention;

[0061] Figure 4 This is a schematic diagram of the diode structure according to an embodiment of the present invention.

[0062] In the above attached figures: 11, detection end; 111, detection wheel; 12, guide rod; 121, annular groove; 21, pressing end; 211, pressing bearing; 22, support part; 23, connecting part; 231, bearing seat; 232, second thread structure; 3, support seat; 4, first magnetic attraction structure; 5, polarity detection line; 6, support member; 7, insertion hole; 8, positioning pin; 9, second magnetic attraction structure; 10, pin structure.

[0063] The first direction is parallel to the X direction in the diagram; the second direction is parallel to the Y direction in the diagram. Detailed Implementation

[0064] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0065] Example: The present invention will be clearly described below with illustrations and detailed description. Any person skilled in the art who understands the examples of the present invention can make changes and modifications based on the technology taught in the present invention without departing from the spirit and scope of the present invention.

[0066] The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the scope of this work. Singular forms such as “a,” “this,” “this,” “the,” and “the” as used herein also include plural forms.

[0067] See Figures 1-4 A polarity detection device for a diode product, comprising:

[0068] A testing component, used to detect the polarity of a product under test;

[0069] Pressing components, used to press and limit the position of products to be tested;

[0070] The polarity detection device has a detection state. In the detection state, the detection end 11 of the detection element contacts the pin structure 10 of the product to be tested, and the pin structure 10 is located between the detection end 11 and the pressing end 21 of the pressing element.

[0071] Both the detection end 11 and the pressing end 21 can rotate around their own axes.

[0072] In the detection state, the pressing end 21 of the pressing part is above the detection end 11.

[0073] This application describes a diode product (including tape and reel, see background art) as the product to be tested. The diode has two leads, which together form the lead structure 10 described above.

[0074] The actual testing device is the testing component, which is a conventional setup. This application only makes certain adjustments to the existing testing device in some embodiments, but the testing principle remains unchanged. Specifically, it uses the forward conduction and reverse cutoff characteristics of a diode for testing, which is the existing testing principle and will not be explained in detail here.

[0075] It should be noted that the clamping component can be understood as being used to clamp the diode in conjunction with the detection component. Specifically, it can be understood as the clamping component and the detection component contacting the diode from both sides, rather than restricting the movement of the diode.

[0076] During the testing process, a testing space is formed between the pressing end 21 of the pressing component and the testing end 11 of the testing component. Due to the limiting effect of the pressing end 21, when the diode passes through the testing space, it can (as much as possible) ensure that its pin (structure) contacts the testing end 11 to complete the polarity test, thus avoiding the situation where some diodes are not tested.

[0077] The detection end 11 can rotate around its own axis, so that the contact point between the electrode and the pin on the surface of the detection end 11 will change continuously, avoiding poor contact or local wear that may be caused by fixed contact points, and helping to improve the accuracy and stability of detection.

[0078] Both the detection end 11 and the pressing end 21 can rotate around their own axes, which reduces the resistance experienced by the product to be tested and thus improves the testing speed.

[0079] In summary, this application improves the detection rate of the products to be tested through the above-mentioned improvements, and the improvement cost is low.

[0080] In the case of packaging several diodes with tape and reel, for diodes that have moved upwards due to the protrusion of the tape and reel, the pressing end 21 presses them down to bring them closer to the detection end 11 to complete the polarity detection.

[0081] The movement of the product under test during the testing process is a standard setting. For example, one end of the tape can be pulled to make the tape move each diode.

[0082] See Figure 3 In this embodiment, the pressing component includes two pressing bearings 211 arranged side by side (or symmetrically arranged) in a first direction, and the two pressing bearings 211 constitute the pressing end 21;

[0083] The first direction is parallel to the horizontal direction.

[0084] The two pressure bearings 211 correspond to the two pins of the diode. The two pressure bearings 211 respectively cause the two pins to fit with the detection end 11, ensuring that the pin structure 10 on the diode is fully fitted with the detection end 11, so as to avoid some diodes being missed.

[0085] See Figure 1In this embodiment, the pressing member includes a support portion 22 and a connecting portion 23, and the pressing end 21 is connected to the support portion 22 through the connecting portion 23;

[0086] In the detection state, the connecting part 23 can move vertically relative to the supporting part 22.

[0087] The support part 22 supports the pressing end 21 through the connecting part 23.

[0088] The connecting part 23 can be vertically adjusted relative to the supporting part 22, thereby adjusting the distance between the detection end 11 and the pressing end 21 to accommodate products of different sizes and expand the scope of application of this application.

[0089] See Figure 3 In some embodiments, the connecting part 23 includes a bearing seat 231 and a second threaded structure 232. The bearing seat 231 is rotatably connected to the two press-fit bearings 211. At the same time, the bearing seat 231 is threadedly connected to the support part 22 through the second threaded structure 232 (such as a screw).

[0090] See Figure 1 In this embodiment, a support base 3 is also included, and the detection end 11 is rotatably disposed on the support base 3;

[0091] One end of the support part 22 is rotatably disposed on the support base 3, and the other end of the support part 22 is connected to the support base 3 through a first threaded structure or a first magnetic attraction structure 4.

[0092] The support base 3 supports both the detection end 11 and the support part 22 at the same time, ensuring stable detection.

[0093] The support 22 is rotatable (achieved via a hinge structure), allowing the pressing end 21 to be transferred during stages when it is not necessary to use the pressing end 21.

[0094] After threaded or magnetic connection, stable pressing of the pressing end 21 can be achieved without affecting subsequent transfer of the pressing end 21.

[0095] The threaded connection is illustrated below: both the support part 22 and the support base 3 have threaded holes, and the threaded connection between the two is achieved by means of bolts.

[0096] The magnetic connection is explained as follows: Bolts are connected to the support part 22, and a magnetic structure (such as a magnet) is installed on the support base 3. The bolts are attracted to the magnet to achieve magnetic connection.

[0097] See Figure 2In this embodiment, the detection element includes two detection wheels 111 arranged side by side (or symmetrically arranged) and coaxially spaced apart in a first direction. The two detection wheels 111 constitute the detection end 11. The first direction is parallel to the horizontal direction.

[0098] In the detection state, the two detection wheels 111 rotate synchronously around their own axes.

[0099] In some embodiments, the detection wheel 111 is made of copper.

[0100] In some embodiments, wires are led out from the shaft of the detection wheel 111 and connected to the detection circuit.

[0101] The detection requires not only the detection wheel 111, but also the aforementioned detection circuit, etc. These are all existing technologies, and this embodiment will not elaborate on the existing technologies.

[0102] The detection wheel 111 can rotate around its own axis. During rotation, the contact points between the electrodes and pins on the surface of the detection wheel 111 continuously change, avoiding poor contact or localized wear that may occur due to fixed contact points, thus helping to improve the accuracy and stability of the detection. In addition, it reduces the resistance experienced by the product under test, thereby increasing the detection speed.

[0103] See Figure 1 In this embodiment, the detection element further includes two guide rods 12 arranged side by side in the second direction;

[0104] The second direction is parallel to the horizontal direction and perpendicular to the first direction.

[0105] The guide rod 12 can guide the tape, making it easy to plan the movement path of the tape according to the needs.

[0106] The support for the guide rod 12 is a conventional setting, which can be achieved by means of the aforementioned support base 3, and is well known to those skilled in the art, so it will not be described in detail here.

[0107] See Figure 1 In this embodiment, the bottom surface of the guide rod 12 is at a lower height than the top surface of the detection wheel 111 in the vertical direction.

[0108] And / or, the guide rod 12 is provided with an annular groove 121, the axial direction of the annular groove 121 being parallel to the first direction.

[0109] Taking the guide rod 12 as a round rod and the detection wheel 111 as a round wheel for explanation, along the vertical direction, the lowest point of the round rod is at a lower height than the highest point of the round wheel.

[0110] By limiting the relative height between the guide rod 12 and the detection wheel 111, the tape unfolds in a parabolic shape, resulting in a larger contact area and longer contact time between the pins and the detection end 11, thus further improving detection accuracy. When the tape unfolds in a parabolic shape, the tape contacts the bottom surface of the two guide rods 12 and the top surface of the detection wheel 111 (see reference). Figure 3 The red line in the middle represents the unfolded shape of the tape and also the movement path of the tape during online inspection.

[0111] The diode includes a body and pins located at both ends of the body, which is standard. An annular groove 121 is provided corresponding to the body. When the tape is unpacked and moved, the body passes through the annular groove 121 without contacting the surface of the guide rod 12, thus avoiding bending of the pins due to the interaction between the body and the guide rod 12, thereby preventing damage to the diode.

[0112] See Figure 1 In this embodiment, a polarity detection line 5 is also included, which is connected to the pressing end 21. The polarity detection line 5 is used to cooperate with the pressing end 21 to detect the polarity of the product to be tested.

[0113] The combination of the pressing end 21 and the polarity detection line 5 is equivalent to the combination of the detection wheel 111 and the wire mentioned above, which is equivalent to setting up a second set of detection structures. The two sets of detection structures work together to detect. For example, when the diode is tilted, one end of the diode contacts one of the detection wheels 111 and the other end contacts one of the pressing bearings 211. At this time, polarity detection can also be achieved, further avoiding the situation where some diodes are not detected.

[0114] It should be noted that there is a gap between the pressing end 21 and the detection end 11. Even with the pressing and limiting effect of the pressing end 21, there may still be cases where some slightly smaller diodes are not attached to the two detection wheels 111.

[0115] See Figure 3 In this embodiment, a support member 6 is also included, which is disposed on the side of the detection end 11;

[0116] In the detection state, the support member 6 contacts the pin structure 10 of the product to be tested.

[0117] Here, the support base 3 and the detection wheel 111 are introduced for explanation: The two detection wheels 111 are rotatably mounted on the support base 3. The support member 6 includes two support plates, which are respectively set between the main structure (wheel-shaped structure) of the two detection wheels 111 and the support base 3. It can be regarded that the support plates and the detection wheels 111 form a larger detection structure, which increases the support surface of the detection structure on the pin structure 10. Since the pin structure 10 is relatively soft, this can prevent the diode from bending.

[0118] See Figure 2 , Figure 3 The support base 3 can be regarded as the base structure of this application, and the support member 6 can also be supported by the support base 3: on the one hand, the support base 3 and the support member 6 are provided with a hole 7 and the other is provided with a positioning pin 8, and the support member 6 is initially fixed by the plug-in assembly; on the other hand, the support base 3 and the support member 6 are magnetically connected by the second magnetic attraction structure 9, and the second magnetic attraction structure 9 is described above in the description of the first magnetic attraction structure 4.

[0119] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A polarity detection device for a diode product, characterized in that: include: A testing component, used to detect the polarity of a product under test; Pressing components, used to press and limit the position of products to be tested; The polarity detection device has a detection state. In the detection state, the detection end (11) of the detection element contacts the pin structure (10) of the product to be tested, and the pin structure (10) is located between the detection end (11) and the pressing end (21) of the pressing element. Both the detection end (11) and the pressing end (21) can rotate around their own axis.

2. The polarity detection device for a diode product according to claim 1, characterized in that: The pressing component includes two pressing bearings (211) arranged side by side in a first direction, and the two pressing bearings (211) constitute the pressing end (21). The first direction is parallel to the horizontal direction.

3. The polarity detection device for a diode product according to claim 1, characterized in that: The pressing component includes a support portion (22) and a connecting portion (23), and the pressing end (21) is connected to the support portion (22) through the connecting portion (23). In the detection state, the connecting part (23) can move vertically relative to the supporting part (22).

4. The polarity detection device for a diode product according to claim 3, characterized in that: It also includes a support base (3), and the detection end (11) is rotatably mounted on the support base (3); One end of the support part (22) is rotatably disposed on the support base (3), and the other end of the support part (22) is connected to the support base (3) through a first threaded structure or a first magnetic structure (4).

5. A polarity detection device for a diode product according to any one of claims 1-4, characterized in that: The detection element includes two detection wheels (111) arranged side by side and coaxially in a first direction, the two detection wheels (111) forming the detection end (11), and the first direction is parallel to the horizontal direction; In the detection state, the two detection wheels (111) rotate synchronously around their own axes.

6. The polarity detection device for a diode product according to claim 5, characterized in that: The detection component also includes two guide rods (12) arranged side by side in the second direction. The second direction is parallel to the horizontal direction and perpendicular to the first direction.

7. The polarity detection device for a diode product according to claim 6, characterized in that: In the vertical direction, the bottom surface of the guide rod (12) is at a lower height than the top surface of the detection wheel (111); And / or, the guide rod (12) is provided with an annular groove (121) corresponding to the main body of the product to be tested, and the axial direction of the annular groove (121) is parallel to the first direction.

8. A polarity detection device for a diode product according to any one of claims 1-4, characterized in that: It also includes a polarity detection line (5) connected to the pressing end (21), the polarity detection line (5) being used to cooperate with the pressing end (21) to detect the polarity of the product to be tested.

9. A polarity detection device for a diode product according to any one of claims 1-4, characterized in that: It also includes a support member (6), which is disposed on the side of the detection end (11); In the detection state, the support (6) contacts the pin structure (10) of the product to be tested.

Images