PIN ejection mechanism

Abstract

The utility model belongs to the technical field of PIN detection, and particularly relates to a PIN ejection mechanism, which comprises a base, a rotary motor, a turntable, a pressing mechanism and a plurality of pin suction mechanisms, the rotary motor and the pressing mechanism are arranged on the base, the rotary motor is connected with the turntable, the plurality of pin suction mechanisms are uniformly distributed on the turntable, and the pin suction mechanisms are arranged on the turntable. The pin suction mechanism is provided with a positioning groove, and a PIN is installed in the positioning groove. The rotary motor drives the rotary table to rotate so as to link the plurality of pin suction mechanisms to synchronously rotate, so that the pin suction mechanisms are propped against and matched with the pressing mechanisms, and pin seats of PINs are exposed out of the positioning grooves; according to the utility model, the PIN needle is positioned, so that inclination or position offset of the PIN needle can be avoided, the flatness, concentricity and height of the PIN needle can be visually detected, and the detection accuracy is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of PIN needle detection, and particularly relates to a PIN needle ejection mechanism. Background Art

[0002] In IGBT power modules, the quality of the PIN pins needs to be inspected before welding, including the PIN pin flatness, PIN pin height, PIN pin verticality, and PIN pin concentricity, which will have a direct impact on the performance and service life of the IGBT.

[0003] Existing PIN pre-weld inspection equipment often relies on a cam structure. This suffers from poor adaptability, cumbersome model changes, and prone to wear during operation. This can lead to poor repeatability in PIN feeding positions and high maintenance costs. PIN inspections are also prone to tilting or positional deviation, resulting in inaccurate PIN detection.

[0004] Based on this, it is necessary to improve the defects in the existing technology to overcome the shortcomings in practical applications. Utility Model Content

[0005] Based on the above-mentioned shortcomings and deficiencies in the prior art, one of the purposes of the present invention is to at least solve one or more of the above-mentioned problems in the prior art. In other words, one of the purposes of the present invention is to provide a PIN ejection mechanism that meets one or more of the above-mentioned needs.

[0006] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical solutions:

[0007] The utility model provides a PIN needle ejection mechanism, comprising a base, a rotary motor, a turntable, a clamping mechanism and a needle suction mechanism, wherein the rotary motor and the clamping mechanism are installed on the base, the rotary motor is connected to the turntable, and a plurality of needle suction mechanisms are evenly arranged on the turntable, each of which is provided with a positioning groove, in which a PIN needle is installed; the rotary motor drives the turntable to rotate, so as to link the plurality of needle suction mechanisms to rotate synchronously, so that the needle suction mechanism and the clamping mechanism abut and cooperate, so that the needle seat of the PIN needle is exposed outside the positioning groove.

[0008] As a preferred solution, each of the needle suction mechanisms includes a guide column, a positioning guide, a compression spring and a pressure cover. The guide column is installed on the base, the positioning guide is sleeved on the guide column, the pressure cover is sleeved outside the positioning guide, the pressure cover is fixedly connected to the guide column, and the compression spring is arranged between the pressure cover and the positioning guide, and sleeved on the guide column.

[0009] As a preferred solution, the positioning guide has a built-in cavity, and the cavity moves up and down along the guide column.

[0010] As a preferred solution, the pressure cover is provided with a guide groove, and the positioning guide is provided with a protruding end, and the protruding end moves along the guide groove.

[0011] As a preferred embodiment, the clamping mechanism includes a connecting block, a bracket and a cam follower, the connecting block is installed on the base, one end of the bracket is installed on the connecting block, and the other end is connected to the cam follower, and the cam follower is in contact with the protruding end.

[0012] As a preferred solution, the guide column is connected to a vacuum joint, a vacuum passage is provided inside the guide column, one end of the vacuum passage is connected to the positioning groove, and the other end is connected to the vacuum joint.

[0013] As a preferred solution, the guide column includes a base, a boss and a top seat, the boss is installed on the base, the top seat is installed on the boss, and a vacuum passage is provided inside the base, the boss and the top seat.

[0014] As a preferred solution, a through hole is provided at the upper end of the positioning guide, and a positioning groove is formed between the top seat and the through hole and is used to install a PIN needle; the positioning guide moves downward so that the top seat protrudes from the through hole, so that the needle seat of the PIN needle is exposed outside the through hole.

[0015] As a preferred solution, four needle suction mechanisms are provided, and each needle suction mechanism is configured with two PIN needles.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The utility model provides a PIN needle ejection mechanism, which can prevent the PIN needle from tilting or position shifting by positioning the PIN needle, so as to facilitate visual inspection of the flatness, concentricity and height of the PIN needle and ensure the accuracy of the inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying any creative work, they can also obtain drawings of other embodiments based on these drawings.

[0019] Figure 1 This is a schematic diagram of a PIN ejection mechanism according to an embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the cooperation between the pressing mechanism and the needle suction mechanism of an embodiment of the utility model;

[0021] Figure 3 This is a cross-sectional view of the cooperation between the pressing mechanism and the needle suction mechanism of an embodiment of the utility model;

[0022] Figure 4 This is a structural diagram of a positioning guide member according to an embodiment of the present utility model;

[0023] Figure 5 is a cross-sectional view of a positioning guide member according to an embodiment of the present utility model;

[0024] Figure 6 This is a schematic structural diagram of a guide column according to an embodiment of the present utility model;

[0025] Figure 7 is a cross-sectional view of a guide post according to an embodiment of the present utility model;

[0026] Figure 8 This is a schematic diagram of the PIN needle structure of an embodiment of the utility model;

[0027] In the figure: 1 base, 2 rotary motor, 3 turntable, 4 pressing mechanism, 41 connecting block, 42 bracket, 43 cam follower, 5 needle suction mechanism, 51 guide column, 511 base, 512 boss, 513 top seat, 514 vacuum passage, 52 positioning guide, 521 cavity, 522 protruding end, 523 through hole, 53 compression spring, 54 pressure cover, 541 guide groove, 55 vacuum connector, 6PIN needle. DETAILED DESCRIPTION

[0028] To more clearly illustrate the embodiments of the present application, the specific implementation methods of the present application will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without inventive work.

[0029] In the description of the embodiments of this application, terms such as "upper," "lower," "front," and "rear" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the application. Furthermore, terms such as "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0030] According to some embodiments of this application, please refer to Figures 1 to 8As shown, a PIN needle ejection mechanism is provided, including a base 1, a rotary motor 2, a turntable 3, a clamping mechanism 4 and a needle suction mechanism 5. The rotary motor 2 and the clamping mechanism 4 are installed on the base 1, and the turntable 3 is connected to the rotary motor 2. Several needle suction mechanisms 5 are evenly arranged on the turntable 3. The needle suction mechanism 5 is provided with a positioning groove, and the PIN needle 6 is installed in the positioning groove; the rotary motor 2 drives the turntable 3 to rotate, so as to link the several needle suction mechanisms 5 to rotate synchronously, so that the needle suction mechanism 5 and the clamping mechanism 4 abut and cooperate, so that the needle seat of the PIN needle 6 is exposed outside the positioning groove.

[0031] Specifically, each needle suction mechanism 5 includes a guide column 51, a positioning guide member 52, a compression spring 53 and a pressure cover 54. The guide column 51 is installed on the base 1, the positioning guide member 52 is sleeved on the guide column 51, the pressure cover 54 is sleeved outside the positioning guide member 52, the pressure cover 54 is fixedly connected to the guide column 51, and the compression spring 53 is arranged between the pressure cover 54 and the positioning guide member 52, and is sleeved on the guide column 51.

[0032] Furthermore, the positioning guide 52 can move up and down relative to the guide post 51 . The positioning guide 52 has a cavity 521 built therein, and the cavity 521 can move up and down along the guide post 51 .

[0033] Furthermore, the pressure cover 54 is provided with a guide groove 541, and the positioning guide member 52 is provided with an extension end 522, and the extension end 522 is arranged to extend out of the guide groove 541. When the positioning guide member 52 moves up and down along the guide column 51, the extension end 522 moves up and down along the guide groove 541, so that the needle seat 61 of the PIN needle 6 is hidden in the positioning groove or exposed outside the positioning groove.

[0034] In some embodiments of the present application, the clamping mechanism 4 includes a connecting block 41, a bracket 42 and a cam follower 43. The connecting block 41 is installed on the base 1, one end of the bracket 42 is installed on the connecting block 41, and the other end is connected to the cam follower 43, and the cam follower 43 is in contact with the protruding end 522.

[0035] Furthermore, the upper surface of the protruding end 522 has a transition arc surface, and the transition arc surface of the protruding end 522 rolls with the cam follower 43 to thereby link the positioning guide 52 to move relative to the guide post 51 .

[0036] Furthermore, the guide post 51 is connected to the vacuum connector 55 . A vacuum passage 514 is provided inside the guide post 51 . One end of the vacuum passage 514 is connected to the positioning groove, and the other end is connected to the vacuum connector 55 .

[0037] In some embodiments of the present application, the guide column 51 includes a base 511, a boss 512 and a top seat 513. The boss 512 is installed on the base 511, and the top seat 513 is installed on the boss 512. A vacuum passage 514 is provided inside the base 511, the boss 512 and the top seat 513 to communicate with each other.

[0038] Furthermore, a through hole 523 is provided at the upper end of the positioning guide 52, and a positioning groove is formed between the top seat 513 and the through hole 523 and is used to install the PIN needle 6; when the PIN needle as a whole needs to be visually inspected, the positioning guide 52 moves downward so that the top seat 513 protrudes from the through hole 523, so that the needle seat 61 of the PIN needle 6 is exposed outside the through hole 523.

[0039] In some embodiments of the present application, four needle suction mechanisms 5 are provided, and each needle suction mechanism 5 is respectively configured with two PIN needles 6. Specifically, the number of needle suction mechanisms can be set according to actual needs, and the number of PIN needle configurations can also be set according to actual needs.

[0040] Under normal working conditions, when the compression spring 53 is squeezed upward and the pressure cover 54 is positioned downward, the positioning guide 52 extends about 2 mm vertically, placing the two PIN needles 6 into the positioning groove, fixing the positions of the two PIN needles 6 through the positioning guide 52 and sucking the PIN needles 6 tightly through the two negative pressures in the vacuum joint 55; when the turntable 3 rotates 90 degrees to the visual inspection position, since the visual inspection position requires the needle seat 61 of the PIN needle 6 to be photographed by the camera, at the moment the turntable 3 reaches the visual inspection position, the protruding end 522 of the positioning guide 52 is squeezed downward by the clamping mechanism 5, so that the positioning guide 52 presses the compression spring 53 downward, and finally the needle seat 61 of the PIN needle 6 is completely exposed outside the positioning groove, so that the camera can perform defect detection on the PIN needle.

[0041] In the embodiment of the present application, by positioning the PIN needle, it is possible to prevent the PIN needle from tilting or shifting in position, so as to facilitate visual inspection of the flatness, concentricity and height of the PIN needle, thereby ensuring the accuracy of the inspection.

[0042] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0043] The above description is only a detailed description of the preferred embodiments and principles of the present application. For ordinary technicians in this field, there may be changes in the specific implementation methods based on the ideas provided by this application, and these changes should also be regarded as the scope of protection of this application.

Claims

1. A PIN ejection mechanism, characterized in that: It includes a base, a rotary motor, a turntable, a clamping mechanism and a needle suction mechanism. The rotary motor and the clamping mechanism are installed on the base. The turntable is connected to the rotary motor. Several needle suction mechanisms are evenly distributed on the turntable. The needle suction mechanism is provided with a positioning groove. A PIN needle is installed in the positioning groove. The rotary motor drives the turntable to rotate to link several needle suction mechanisms to rotate synchronously, so that the needle suction mechanism and the clamping mechanism abut and cooperate, so that the needle seat of the PIN needle is exposed outside the positioning groove.

2. A PIN ejection mechanism according to claim 1, characterized in that: Each of the needle suction mechanisms includes a guide column, a positioning guide, a compression spring and a pressure cover. The guide column is installed on the base, the positioning guide is sleeved on the guide column, the pressure cover is sleeved outside the positioning guide, the pressure cover is fixedly connected to the guide column, and the compression spring is arranged between the pressure cover and the positioning guide, and sleeved on the guide column.

3. A PIN ejection mechanism according to claim 2, characterized in that: The positioning guide is provided with a cavity therein, and the cavity moves up and down along the guide post.

4. A PIN ejection mechanism according to claim 2, characterized in that: The pressure cover is provided with a guide groove, and the positioning guide is provided with a protruding end, and the protruding end moves along the guide groove.

5. A PIN ejection mechanism according to claim 4, characterized in that: The clamping mechanism includes a connecting block, a bracket and a cam follower. The connecting block is installed on the base. One end of the bracket is installed on the connecting block, and the other end is connected to the cam follower. The cam follower contacts and cooperates with the protruding end.

6. A PIN ejection mechanism according to claim 2, characterized in that: The guide column is connected to the vacuum joint. A vacuum passage is provided inside the guide column. One end of the vacuum passage is connected to the positioning groove, and the other end is connected to the vacuum joint.

7. A PIN ejection mechanism according to claim 6, characterized in that: The guide column includes a base, a boss and a top seat, the boss is installed on the base, and the top seat is installed on the boss. A vacuum passage is provided inside the base, the boss and the top seat.

8. The PIN ejection mechanism according to claim 7, characterized in that: A through hole is provided at the upper end of the positioning guide, and a positioning groove is formed between the top seat and the through hole for installing a PIN needle; the positioning guide moves downward so that the top seat protrudes from the through hole, so that the needle seat of the PIN needle is exposed outside the through hole.

9. The PIN ejection mechanism according to claim 1, characterized in that: There are four needle suction mechanisms, and each needle suction mechanism is equipped with two PIN needles.

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