PIN angle positioning device

Abstract

The invention belongs to the technical field of PIN welding, and particularly relates to a PIN angle positioning device which comprises a feeding module, a rotary distributing module, a transferring module and an angle adjusting module. The feeding module comprises a material channel arranged in the horizontal direction, and a plurality of PINs are sequentially conveyed through the material channel. The rotary material distribution module is used for converting the arrangement of the PINs from the horizontal direction to the arrangement of the PINs in the vertical direction; the transfer module is used for transferring the PINs from the rotary material distribution module to the angle adjustment module; the angle adjusting module is used for adjusting the angles of the PINs, so that all the conveyed PINs are arranged in the same direction, and angle positioning of the PINs is achieved. The problems that a PIN positioning mechanism is not accurate and the feeding angle of the PIN cannot be controlled are solved, the repeated positioning performance of a product is good, the angle of the PIN can be controlled, the failure rate in ultrasonic welding production is reduced, the angle of the PIN can be corrected when the angle of the PIN deviates, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of PIN pin soldering, and particularly relates to a PIN pin angle positioning device. Background Art

[0002] Insulated Gate Bipolar Transistor (IGBT) is the most advanced power semiconductor device among the third-generation power electronic devices, and has advantages such as high frequency, high voltage, and large current. It is the core device in the fields of flexible AC-DC power transmission, new energy power generation, power quality governance, etc., and has been widely used in related industries. In the IGBT module packaging, ultrasonic soldering is used to fix the PIN pins to the specified positions to achieve the transmission of electricity and signals.

[0003] The structures of PIN pins are diverse. As a common PIN pin structure form, when the fish-eye pin is soldered to the PCB substrate in the IGBT module, the fish-eye pin needs to maintain a fixed and unified angle to be connected and formed with the substrate through the ultrasonic soldering process.

[0004] The inventor found that there are at least the following technical problems in the prior art: When feeding the fish-eye pins before soldering, due to the diverse arrangement of the fish-eye pin angles, it is easy to have deviations when picking up the pins by the soldering head suction nozzle, and problems such as inaccurate positioning of the fish-eye pins, angle changes, and poor consistency may occur, which may further lead to unreliable soldering or inclined soldering, affecting the soldering quality of the IGBT module and resulting in quality defects or defective products in the IGBT module.

[0005] Based on this, it is necessary to improve the defects existing in the prior art to overcome the deficiencies in actual applications. Summary of the Invention

[0006] Based on the above-mentioned drawbacks and deficiencies existing 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 existing in the prior art. In other words, one of the purposes of the present invention is to provide a PIN pin angle positioning device that meets one or more of the foregoing requirements.

[0007] To achieve the above-mentioned invention purpose, the present invention adopts the following technical solutions:

[0008] The present invention provides a PIN pin angle positioning device, including a feeding module, a rotating and distributing module, a transfer module, and an angle adjustment module; wherein,

[0009] The feeding module includes a material channel arranged in the horizontal direction, and sequentially conveys several PIN pins through the material channel;

[0010] The rotating and distributing module is used to convert the arrangement of the PIN pins from the horizontal direction to the vertical direction;

[0011] A transfer module for transferring the PIN pins from the rotary feeding module to the angle adjustment module;

[0012] An angle adjustment module for adjusting the angles of the PIN pins so that all the conveyed PIN pins are arranged in the same orientation to achieve angle positioning of the PIN pins.

[0013] As a preferred solution, the rotary feeding module includes a rotary module and a feeding turntable. The rotary module is in transmission connection with the feeding turntable. The feeding turntable is evenly provided with a plurality of positioning grooves, and the positioning grooves are in snap-fit connection with the pin bases of the PIN pins.

[0014] As a preferred solution, the transfer module includes a motion module and a transfer mechanism. The motion module includes a first module, a second module, and a third module. The second module is vertically arranged above the first module. The second module is connected to the third module, and the third module is connected to the transfer mechanism.

[0015] As a preferred solution, the first module includes a base, an X-direction cylinder, a first slide rail, and a first slider. The base is provided with the first slide rail. The X-direction cylinder is connected to the second module. The second module is connected to the first slider, and the first slider is in sliding fit with the first slide rail.

[0016] As a preferred solution, the second module includes a support plate, a Y-direction cylinder, an L-shaped plate, a second slide rail, and a second slider. The support plate is provided with the second slide rail. The Y-direction cylinder is connected to the L-shaped plate. The L-shaped plate is connected to the second slider, and the second slider is in sliding fit with the second slide rail.

[0017] As a preferred solution, the third module includes a Z-direction cylinder and a fixing plate. The Z-direction cylinder is installed on the L-shaped plate. The Z-direction cylinder is connected to the fixing plate, and the transfer mechanism is installed on the fixing plate.

[0018] As a preferred solution, the transfer mechanism includes a suction nozzle. The suction nozzle is used to transfer the PIN pins from the feeding turntable to the rotary feeding module. The suction nozzle is communicated with a vacuum device and is used to fix the PIN pins by vacuum adsorption.

[0019] As a preferred solution, the angle adjustment module includes a fourth module, a rotating mechanism, and a positioning turntable. The fourth module is arranged along the X direction. The rotating mechanism is installed on the fourth module. The rotating mechanism is connected to the positioning turntable and is used to drive the positioning turntable to rotate. The positioning turntable is used to position the PIN pins.

[0020] As a preferred solution, the rotation mechanism includes a rotation motor, a conveyor belt and a rotating shaft. The rotation motor is connected to the conveyor belt, the conveyor belt is connected to the rotating shaft, and the rotating shaft is connected to a positioning turntable.

[0021] As a preferred solution, a laser sensor is provided on the rotation mechanism for detecting the angle of the PIN needle.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] The present invention provides a PIN needle angle positioning device, which solves problems such as inaccurate PIN needle positioning mechanism and uncontrollable incoming angle of PIN needles. The product has good repeat positioning performance, the angle of the PIN needle can be controlled, the failure rate in ultrasonic welding production is reduced, the angle of the PIN needle can be corrected when the angle of the PIN needle deviates, and the production efficiency is improved.

[0024] The present invention provides a PIN needle angle positioning device, which can ensure accurate positioning of the fish-eye needle, multiple fish-eye needles are output in the same orientation, the consistency of welding is ensured, and quality defects or defective products of the IGBT module are avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings.

[0026] Figure 1 It is a schematic structural diagram of a PIN needle angle positioning device according to an embodiment of the present invention;

[0027] Figure 2 It is a schematic structural diagram of the rotation mechanism according to an embodiment of the present invention;

[0028] Figure 3 It is a schematic structural diagram of the transfer mechanism according to an embodiment of the present invention;

[0029] Figure 4 It is a schematic structural diagram of the material distribution turntable according to an embodiment of the present invention;

[0030] Figure 5 It is a schematic structural diagram of the positioning turntable according to an embodiment of the present invention;

[0031] Figure 6 It is a schematic structural diagram of the fish-eye needle according to an embodiment of the present invention;

[0032] In the figure: 1 - loading module, 2 - rotating and distributing module, 21 - rotating module, 22 - distributing turntable, 221 - positioning groove, 222 - vacuum suction pipe, 3 - transfer module, 31 - first module, 311 - base, 312 - X-direction cylinder, 313 - first slide rail, 314 - first slider, 32 - second module, 321 - support plate, 322 - Y-direction cylinder, 323 - L-shaped plate, 324 - second slide rail, 325 - second slider, 33 - third module, 331 - Z-direction cylinder, 332 - fixing plate, 34 - transfer mechanism, 341 - nozzle, 342 - vacuum suction pipe, 4 - angle adjustment module, 41 - fourth module, 42 - rotating mechanism, 421 - rotating motor, 422 - conveyor belt, 423 - rotating shaft, 424 - bearing seat, 43 - positioning turntable, 5 - fisheye needle. Detailed implementation manners

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings required for the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some examples or embodiments of the present application. For those of ordinary skill in the art, without creative efforts, the present application can also be applied to other similar scenarios based on these drawings. Unless obvious from the language context or otherwise stated, the same reference numerals in the figures represent the same structure or operation.

[0034] Unless otherwise specifically stated, the relative arrangements of the components and steps described in these embodiments, numerical expressions, and values do not limit the scope of the present application. At the same time, it should be understood that, for the sake of description, the dimensions of the various parts shown in the accompanying drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant fields may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary, not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0035] In the description of the present application, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, back, top, bottom, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description. Without contrary explanation, these orientation words do not indicate or imply that the device or component referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present application; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0036] In addition, it should be noted that the use of words such as "first", "second", etc. to limit components is only for the convenience of distinguishing the corresponding components. Without additional statement, the above words have no special meaning. Therefore, it should not be construed as a limitation on the protection scope of the present application. In addition, although the terms used in the present application are selected from well-known and commonly used terms, some of the terms mentioned in the specification of the present application may be selected by the applicant according to his or her judgment, and their detailed meanings are described in the relevant parts of the description herein. In addition, it is required to understand the present application not only through the actual terms used, but also through the meaning implied by each term.

[0037] According to some embodiments of the present application, please refer to Figures 1 to 6 As shown, there is provided a PIN needle angle positioning device, including a feeding module 1, a rotating and distributing module 2, a transferring module 3 and an angle adjusting module 4. The feeding module 1 includes a material channel 11 arranged in the horizontal direction, and several PIN needles are sequentially conveyed through the material channel 11. The rotating and distributing module 2 is used to convert the arrangement of the PIN needles from the horizontal direction to the vertical direction; the transferring module 3 is used to transfer the PIN needles from the rotating and distributing module 2 to the angle adjusting module 4, and the angle adjusting module 4 is used to adjust the angles of the PIN needles so that all the conveyed PIN needles are arranged in the same orientation to achieve the angle positioning of the PIN needles.

[0038] According to some embodiments of the present application, the rotating and distributing module 2 includes a rotating module 21 and a distributing turntable 22. The rotating module 21 is in driving connection with the distributing turntable 22. The distributing turntable 22 is evenly provided with several positioning grooves 221, and the positioning grooves 221 are in snap-fit connection with the needle seats of the PIN needles.

[0039] Specifically, the distributing turntable 22 is evenly provided with four positioning grooves 221 along the outer circumferential direction. The positioning grooves 221 are in snap-fit connection with the needle seats of the PIN needles. When multiple PIN needles are conveyed in the material channel in the horizontal direction, the needle seats move forward in sequence with the needle tips at the back, and the needle seats are gradually snapped into the positioning grooves 21. In a specific embodiment, the PIN needles are configured as fish-eye needles 5.

[0040] According to some embodiments of the present application, the transfer module 3 includes a motion module and a transfer mechanism 34. The motion module includes a first module 31, a second module 32, and a third module 33. The second module 32 is vertically disposed above the first module 31. The second module 32 is connected to the third module 33, and the third module 33 is connected to the transfer mechanism 34. The first module 31 is configured to drive the transfer mechanism 34 to move in the X direction, the second module 32 is configured to drive the transfer mechanism 34 to move in the Y direction, and the third module 33 is configured to drive the transfer mechanism 34 to move in the Z direction, so that the transfer mechanism transfers the PIN pins from the rotary material distribution module 2 to the angle adjustment module 4.

[0041] Specifically, the first module 31 includes a base 311, an X-direction cylinder 312, a first slide rail 313, and a first slider 314. The first slide rail 313 is provided on the base 311. The X-direction cylinder 312 is connected to the second module 32, the second module 32 is connected to the first slider 314, and the first slider 314 is slidably engaged with the first slide rail 313. The second module 32 is driven by the X-direction cylinder to move, so as to realize the movement of the transfer mechanism in the X direction.

[0042] Further, the second module 32 includes a support plate 321, a Y-direction cylinder 322, an L-shaped plate 323, a second slide rail 324, and a second slider 325. The second slide rail 324 is provided on the support plate 321. The Y-direction cylinder 322 is connected to the L-shaped plate 323, the L-shaped plate 323 is connected to the second slider 324, and the second slider 325 is slidably engaged with the second slide rail 324. The L-shaped plate 323 is driven by the Y-direction cylinder 332 to move, and then the third module is driven to move, so as to realize the movement of the transfer mechanism in the Y direction.

[0043] Further, the third module 33 includes a Z-direction cylinder 331 and a fixing plate 332. The Z-direction cylinder 331 is installed on the L-shaped plate 323. The Z-direction cylinder 331 is connected to the fixing plate 332, and the transfer mechanism 34 is installed on the fixing plate 332. The fixing plate 332 is driven by the Z-direction cylinder 331 to move, and then the transfer mechanism 34 is driven to move, so as to realize the movement of the transfer mechanism in the Z direction.

[0044] In some embodiments of the present application, the transfer mechanism 34 includes a suction nozzle 341. The suction nozzle 341 is configured to transfer the PIN pins from the material distribution turntable to the rotary material distribution module. The suction nozzle is communicated with an external vacuum device and is used to fix the PIN pins by vacuum adsorption.

[0045] According to some embodiments of the present application, the angle adjustment module 4 includes a fourth module 41, a rotating mechanism 42, and a positioning turntable 43. The fourth module 41 is arranged along the X direction. The rotating mechanism 42 is installed on the fourth module 41. The rotating mechanism 42 is connected to the positioning turntable 43 and is configured to drive the positioning turntable 43 to rotate. The positioning turntable 43 is configured to position the PIN pins.

[0046] Specifically, the fourth module 41 is used to drive the rotating mechanism 42 to move along the X direction. The rotating mechanism 42 includes a rotating motor 421, a conveyor belt 422 and a rotating shaft 423. The rotating motor 421 is connected to the conveyor belt 422, the conveyor belt 422 is connected to the rotating shaft 423, and the rotating shaft 423 is connected to the positioning turntable 43.

[0047] Furthermore, the rotating shaft 423 is connected to the bearing seat 424, and the rotating shaft 423 passes through the bearing seat 424 and is connected to the positioning turntable 43. The conveyor belt 422 is driven to rotate by the rotating motor 421 to link the rotating shaft 423 to rotate, and then link the positioning turntable 43 to rotate synchronously, so as to realize the positioning of the PIN needles in the positioning turntable 43, so that the PIN needles placed in the positioning turntable 43 in sequence are arranged in the same direction.

[0048] Furthermore, a laser sensor is provided on the rotating mechanism 42 for detecting the angle of the PIN needle. The angle of the PIN needle is detected in real time by the laser sensor. When there is a deviation in the angle of the PIN needle, the rotary motor is driven by the control system to rotate the positioning turntable, thereby ensuring that the PIN needles placed in the positioning turntable are oriented in the same direction and maintain the same orientation, so as to be transferred to the welding position of the IGBT module for direct welding and forming.

[0049] A PIN needle angle positioning device provided in the present application can ensure accurate positioning of the fisheye needle, and multiple fisheye needles maintain the same output orientation to ensure welding consistency, avoid quality defects or defective products in the IGBT module, and solve the problems of inaccurate PIN needle positioning mechanism and uncontrollable PIN needle incoming angle. The product has good repeatability positioning performance, and the PIN needle angle is controllable, which reduces the failure rate in ultrasonic welding production. The PIN needle angle can be corrected when the PIN needle angle is offset, thereby improving production efficiency.

[0050] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0051] 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 will be changes in the specific implementation methods based on the ideas provided by the present invention, and these changes should also be regarded as the scope of protection of the present application.

Claims

1. A PIN needle angle positioning device, characterized in that: It includes a feeding module, a rotating material distribution module, a transfer module and an angle adjustment module; wherein, The feeding module includes a material channel arranged in a horizontal direction, through which a plurality of PIN needles are sequentially conveyed; Rotating material distribution module, used to convert the PIN needles from horizontal to vertical arrangement; A transfer module, used for transferring the PIN needle from the rotating material distribution module to the angle adjustment module; The angle adjustment module is used to adjust the angle of the PIN needle so that all the delivered PIN needles are arranged in the same direction to achieve the angle positioning of the PIN needle.

2. A PIN needle angle positioning device according to claim 1, characterized in that: The rotary material distribution module comprises a rotary module group and a material distribution turntable, wherein the rotary module group is in driving connection with the material distribution turntable, and the material distribution turntable is evenly provided with a plurality of positioning grooves, and the positioning grooves are engaged with the needle seat of the PIN needle.

3. A PIN needle angle positioning device according to claim 2, characterized in that: The transfer module includes a motion module and a transfer mechanism. The motion module includes a first module, a second module and a third module. The second module is vertically arranged on the first module. The second module is connected to the third module. The third module is connected to the transfer mechanism.

4. A PIN needle angle positioning device according to claim 3, characterized in that: The first module includes a base, an X-direction cylinder, a first slide rail and a first slider. The base is provided with a first slide rail. The X-direction cylinder is connected to the second module. The second module is connected to the first slider. The first slider is slidably matched with the first slide rail.

5. A PIN needle angle positioning device according to claim 3, characterized in that: The second module includes a support plate, a Y-axis cylinder, an L-shaped plate, a second slide rail and a second slider. The support plate is provided with a second slide rail. The Y-axis cylinder is connected to the L-shaped plate. The L-shaped plate is connected to the second slider. The second slider is slidably matched with the second slide rail.

6. A PIN needle angle positioning device according to claim 5, characterized in that: The third module includes a Z-direction cylinder and a fixed plate. The Z-direction cylinder is installed on the L-shaped plate. The Z-direction cylinder is connected to the fixed plate, and the transfer mechanism is installed on the fixed plate.

7. A PIN needle angle positioning device according to claim 3, characterized in that: The transfer mechanism comprises a suction nozzle, which is used to transfer the PIN needle from the material distribution turntable to the rotary material distribution module. The suction nozzle is connected to a vacuum device and is used to fix the PIN needle through vacuum adsorption.

8. A PIN needle angle positioning device according to claim 1, characterized in that: The angle adjustment module includes a fourth module, a rotating mechanism and a positioning turntable. The fourth module is arranged along the X direction. The rotating mechanism is installed on the fourth module. The rotating mechanism is connected to the positioning turntable to drive the positioning turntable to rotate. The positioning turntable is used to position the PIN needle.

9. A PIN needle angle positioning device according to claim 8, characterized in that: The rotating mechanism comprises a rotating motor, a conveyor belt and a rotating shaft. The rotating motor is connected to the conveyor belt, the conveyor belt is connected to the rotating shaft, and the rotating shaft is connected to a positioning turntable.

10. A PIN needle angle positioning device according to claim 8, characterized in that: The rotating mechanism is provided with a laser sensor for detecting the angle of the PIN needle.

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