Device for detecting short circuit between guide pin and shell of aluminum electrolytic capacitor

Abstract

A device for detecting short circuit between a guide pin and a shell of an aluminum electrolytic capacitor comprises a turntable, a transfer clamp and a detection assembly, the transfer clamp is arranged on the turntable and rotates along with the turntable; the detection assembly comprises a support, an insulation connecting block and an elastic detection sheet. The elastic detection sheet is fixedly connected to the insulating connection block, and the insulating connection block is fixedly connected to the support. The elastic detection sheet is connected with the PLC through an electric wire; and the elastic detection sheet is positioned right above the aluminum electrolytic capacitor clamping position of the transfer clamp. According to the utility model, the bottom of the aluminum shell is contacted through the elastic detection sheet, and when the aluminum electrolytic capacitor to be detected moves to the position of the elastic detection sheet, the contact time of the elastic detection sheet and the aluminum electrolytic capacitor is long, so that misjudgment is not easy to occur. Meanwhile, the direction of the anode lead and the direction of the cathode lead of the aluminum electrolytic capacitor can be detected at the same time.

Description

Technical Field

[0001] The utility model relates to an aluminum electrolytic capacitor, in particular to a detection device for short circuit between the lead pins and the shell of an aluminum electrolytic capacitor. Background Art

[0002] In the production process of aluminum electrolytic capacitors, before the sleeving process, it is not only necessary to identify whether the directions of the anode lead and the cathode lead are consistent, but also to detect whether there is a contact short circuit between the core package and the shell. The existing detection device clamps the lead and then contacts the shell with a detection piece. Since the contact time between the detection piece and the shell is short, it is easy to cause misjudgment. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a detection device for short circuit between the lead pins and the shell of an aluminum electrolytic capacitor with high detection accuracy.

[0004] To solve the above technical problem, the technical solution proposed by the utility model is: a detection device for short circuit between the lead pins and the shell of an aluminum electrolytic capacitor, including a turntable, a transfer clamp, and a detection component; the transfer clamp is arranged on the turntable and rotates with the turntable; the detection component includes a bracket, an insulating connection block, and an elastic detection piece; the elastic detection piece is fixedly connected to the insulating connection block, and the insulating connection block is fixedly connected to the bracket; the elastic detection piece is connected to the PLC through an electric wire; the elastic detection piece is located directly above the clamping position of the aluminum electrolytic capacitor of the transfer clamp.

[0005] In the above detection device for short circuit between the lead pins and the shell of an aluminum electrolytic capacitor, preferably, the elastic detection piece includes an arc portion and a flat portion, the arc portion is located in front of the flat portion, and the flat portion contacts the bottom of the aluminum electrolytic capacitor to be tested.

[0006] In the above detection device for short circuit between the lead pins and the shell of an aluminum electrolytic capacitor, preferably, a connection hole or a connection groove for connecting the electric wire is provided at the top of the arc portion.

[0007] In the above detection device for short circuit between the lead pins and the shell of an aluminum electrolytic capacitor, preferably, the elastic detection piece is in a J shape or a U shape.

[0008] In the above detection device for short circuit between the lead pins and the shell of an aluminum electrolytic capacitor, preferably, the length of the elastic detection piece in contact with the bottom of the shell of the aluminum electrolytic capacitor to be tested is greater than 1 cm.

[0009] In the above detection device for short circuit between the lead pins and the shell of an aluminum electrolytic capacitor, preferably, the arc portion and the flat portion are integrally formed.

[0010] For the above detection device for short circuit between the lead pins and the housing of an aluminum electrolytic capacitor, preferably, a lead pin polarity detection device is provided below the detection assembly; the lead pin polarity detection device includes a pin-splitting piece, a positive electrode detection assembly and a negative electrode detection assembly respectively arranged on both sides of the pin-splitting piece; a notch is provided on the pin-splitting piece; the positive electrode detection assembly includes a positive electrode detection cross beam, a rotating member and a detection member, the positive electrode detection cross beam is fixed on the rotating member, one end of the positive electrode detection cross beam is arranged in the notch of the pin-splitting piece, and the other end is arranged opposite to the detection member; the negative electrode detection assembly includes a negative electrode detection cross beam, a rotating member and a detection member, the negative electrode detection cross beam is fixed on the rotating member, one end of the negative electrode detection cross beam is arranged in the notch of the pin-splitting piece, and the other end is arranged opposite to the detection member; an isolation block is arranged between the positive electrode detection cross beam and the negative electrode detection cross beam on the pin-splitting piece.

[0011] For the above detection device for short circuit between the lead pins and the housing of an aluminum electrolytic capacitor, preferably, detection blocks are arranged at one ends of the negative electrode detection cross beam and the positive electrode detection cross beam, which are arranged opposite to the detection member.

[0012] For the above detection device for short circuit between the lead pins and the housing of an aluminum electrolytic capacitor, preferably, the rotating member includes a connecting column and a table column, the bottom of the connecting column is arranged in the table column, and a return spring is arranged at the bottom of the connecting column, and the return spring is arranged in the table column; the positive electrode detection cross beam or the negative electrode detection cross beam is embedded into the connecting column and fixed.

[0013] Compared with the prior art, the advantages of the present utility model are as follows: in the present utility model, the bottom of the aluminum shell is contacted by an elastic detection piece, and when the aluminum electrolytic capacitor to be tested moves to the position of the elastic detection piece, the contact time between the elastic detection piece and the aluminum electrolytic capacitor is long and it is not easy to make a misjudgment. At the same time, the directions of the anode lead and the cathode lead of the aluminum electrolytic capacitor can also be detected simultaneously in the present utility model. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of the detection device for short circuit between the lead pins and the housing of the aluminum electrolytic capacitor in Embodiment 1.

[0015] Figure 2 It is a schematic structural diagram of the lead pin polarity detection device in Embodiment 1.

[0016] Legend Explanation

[0017] 1. Turntable; 2. Transfer clamp; 3. Detection assembly; 31. Bracket; 32. Insulating connection block; 33. Elastic detection piece; 331. Arc portion; 332. Gentle portion; 4. Lead pin polarity detection device; 41. Pin-splitting piece; 411. Isolation block; 42. Positive electrode detection cross beam; 43. Connecting column; 44. Table column; 45. Detection member; 46. Detection block; 47. Negative electrode detection cross beam. Detailed implementation mode

[0018] To facilitate the understanding of the present utility model, the following will describe the present utility model more comprehensively and meticulously in conjunction with the accompanying drawings of the specification and preferred embodiments, but the protection scope of the present utility model is not limited to the following specific embodiments.

[0019] It should be particularly noted that when a certain element is described as "fixed to, fixedly connected to, connected to, or communicated with" another element, it can be directly fixed, fixedly connected, connected, or communicated to the other element, or it can be indirectly fixed, fixedly connected, connected, or communicated to the other element through other intermediate connecting members.

[0020] Unless otherwise defined, all the professional terms used hereinafter have the same meaning as commonly understood by those skilled in the art. The professional terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the protection scope of the present utility model. Embodiment

[0021] As Figure 1 shown, a detection device for short circuit between the lead pins and the shell of an aluminum electrolytic capacitor includes a turntable 1, a transfer clamp 2, and a detection assembly 3; the transfer clamp 2 is arranged on the turntable 1 and rotates with the turntable 1; the detection assembly 3 includes a bracket 31, an insulating connection block 32, and an elastic detection piece 33; the elastic detection piece 33 is fixedly connected to the insulating connection block 32, and the insulating connection block 32 is fixedly connected to the bracket 31; the elastic detection piece 33 is located directly above the clamping position of the aluminum electrolytic capacitor of the transfer clamp 2.

[0022] In this embodiment, the elastic detection piece 33 can be in the shape of a J or a U. The length of the elastic detection piece 33 in contact with the bottom of the aluminum electrolytic capacitor to be measured is greater than 1 cm, preferably about 2 cm.

[0023] In this embodiment, as Figure 1 shown, the elastic detection piece 33 includes an integrally formed arc portion 331 and a flat portion 332. The arc portion 331 is located in front of the flat portion 332, and the flat portion 332 is in contact with the bottom of the shell of the aluminum electrolytic capacitor to be measured.

[0024] As Figure 1 shown, the elastic detection piece 33 is connected to the PLC through an electric wire; a connection hole for connecting the electric wire is provided at the top of the arc portion 331 of the elastic detection piece 33. The insulating fixing block is also connected to the top of the arc portion 331 of the elastic detection piece 33.

[0025] As Figure 1 shown, in this embodiment, a lead pin polarity detection device 4 is provided below the detection assembly 3. As Figure 2As shown, the guide pin polarity detection device 4 includes a split pin piece 41, a positive electrode detection component 3 and a negative electrode detection component 3 respectively arranged on both sides of the split pin piece 41; a notch is provided on the split pin piece 41; the positive electrode detection component 3 includes a positive electrode detection cross beam 42, a rotating member and a detection member 45, and the detection member 45 is a photoelectric inductor. The positive electrode detection cross beam 42 is fixed on the rotating member, one end of the positive electrode detection cross beam 42 is arranged in the notch of the split pin piece 41, and the other end is arranged opposite to the detection member 45; the negative electrode detection component 3 includes a negative electrode detection cross beam 47, a rotating member and a detection member 45, the negative electrode detection cross beam 47 is fixed on the rotating member, one end of the negative electrode detection cross beam 47 is arranged in the notch of the split pin piece 41, and the other end is arranged opposite to the detection member 45; a separation block 411 is arranged between the positive electrode detection cross beam 42 and the negative electrode detection cross beam 47 on the split pin piece 41. In this embodiment, due to the arrangement of the separation block 411, the misjudgment of the detection device is reduced, because the separation block 411 can prevent most of the products with bent positive electrodes and reversed polarities from touching the positive electrode detection cross beam 42, thereby generating misjudgments.

[0026] In this embodiment, in order to increase the area that the detection member 45 can detect, a detection block 46 is arranged at one end of the negative electrode detection cross beam 47 and the positive electrode detection cross beam 42 that is arranged opposite to the detection member 45, and the area of the detection block 46 facing the detection member 45 is larger than the cross-sectional areas of the negative electrode detection cross beam 47 and the positive electrode detection cross beam 42.

[0027] In this embodiment, the rotating member includes a connecting column 43 and a table column 44. The bottom of the connecting column 43 is arranged in the table column 44, and a reset spring (not shown in the figure) is arranged at the bottom of the connecting column 43. The reset spring is arranged in the table column 44; the positive electrode detection cross beam 42 or the negative electrode detection cross beam 47 is embedded in the connecting column 43 and fixed.

[0028] In this embodiment, the bottom of the aluminum shell is contacted by an elastic detection piece 33. When the aluminum electrolytic capacitor to be tested moves to the position of the elastic detection piece 33, the contact time between the elastic detection piece 33 and the aluminum electrolytic capacitor is long and it is not easy to misjudge. At the same time, in the present utility model, the directions of the anode lead and the cathode lead of the aluminum electrolytic capacitor can also be detected simultaneously.

Claims

1. A detection device for short circuit between a guide pin and a casing of an aluminum electrolytic capacitor, characterized in that: It includes a turntable, a transfer clamp, and a detection component; the transfer clamp is arranged on the turntable and rotates with the turntable; the detection component includes a bracket, an insulating connection block and an elastic detection piece; the elastic detection piece is fixedly connected to the insulating connection block, and the insulating connection block is fixedly connected to the bracket; the elastic detection piece is connected to the PLC through an electric wire; the elastic detection piece is located directly above the clamping position of the aluminum electrolytic capacitor of the transfer clamp.

2. The detection device for short circuit between the guide pin and the casing of an aluminum electrolytic capacitor according to claim 1, characterized in that: The elastic detection piece includes an arc portion and a flat portion, wherein the arc portion is located in front of the flat portion, and the flat portion contacts the bottom of the aluminum electrolytic capacitor to be tested.

3. The detection device for short circuit between the guide pin and the casing of an aluminum electrolytic capacitor according to claim 2, characterized in that: A connection hole or a connection groove connected to the electric wire is arranged on the top of the arc-shaped portion.

4. The detection device for short circuit between the guide pin and the casing of an aluminum electrolytic capacitor according to claim 2, characterized in that: The elastic detection piece is in a J-shape or a U-shape.

5. The detection device for short circuit between the guide pin and the casing of an aluminum electrolytic capacitor according to claim 1, characterized in that: The length of the elastic detection piece in contact with the bottom of the shell of the aluminum electrolytic capacitor to be tested is greater than 1 cm.

6. The detection device for short circuit between the guide pin and the casing of an aluminum electrolytic capacitor according to claim 2, characterized in that: The arc portion and the flat portion are integrally formed.

7. The detection device for short circuit between the guide pin and the casing of an aluminum electrolytic capacitor according to claim 1, characterized in that: A guide needle polarity detection device is arranged below the detection component; the guide needle polarity detection device includes a leg dividing piece and a positive pole detection component and a negative pole detection component respectively arranged on both sides of the leg dividing piece; a notch is arranged on the leg dividing piece; the positive pole detection component includes a positive pole detection beam, a rotating part and a detection part, the positive pole detection beam is fixed on the rotating part, one end of the positive pole detection beam is arranged in the notch of the leg dividing piece, and the other end is arranged opposite to the detection part; the negative pole detection component includes a negative pole detection beam, a rotating part and a detection part, the negative pole detection beam is fixed on the rotating part, one end of the negative pole detection beam is arranged in the notch of the leg dividing piece, and the other end is arranged opposite to the detection part; an isolation block is arranged between the positive pole detection beam and the negative pole detection beam on the leg dividing piece.

8. The detection device for short circuit between the guide pin and the casing of an aluminum electrolytic capacitor according to claim 7, characterized in that: A detection block is arranged at one end of the negative electrode detection beam and the positive electrode detection beam which is arranged opposite to the detection member.

9. The detection device for short circuit between the guide pin and the casing of an aluminum electrolytic capacitor according to claim 7, characterized in that: The rotating member includes a connecting column and a platform column, the bottom of the connecting column is arranged in the platform column, and a reset spring is arranged at the bottom of the connecting column, and the reset spring is arranged in the platform column; the positive pole detection beam or the negative pole detection beam is embedded in the connecting column and fixed.

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