Pin needle feeding mechanism and ultrasonic welding device
Patent Information
- Application Number
- CN202522405892.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-13
- Publication Date
- 2026-10-23
- Estimated Expiration
- 2035-11-13
AI Technical Summary
[0003]目前焊头在取针时，PIN针从振动盘出来后，直接移动到取针位的定位夹具上，当焊头从焊接位长距离XYZ移动到取针位取针，取针完成后又按照原轨迹返回到焊接位，每焊接一根PIN针要往返长距离移动取针一次，降低了生产效率，并且PIN针送料过程中存在定位不准、连续供料困难及针体姿态不稳定的问题；另一方面PIN针焊接机存在焊接取针往复长距离移动，会导致移动部件磨损严重，使产品的寿命缩短的问题
[0019]本实用新型提供一种PIN针送料机构，通过缓存结构能够在送料过程中对PIN针进行暂存，避免了因供料不稳定导致的焊接中断或PIN针堆积问题，通过第一驱动机构和第二驱动机构的协同作用，使得PIN针能够按照预设的路径精准地被输送到转运机构，并进一步被转运至取针位，大大提高了供料的准确性和连续性。
Smart Images
Figure CN224879599U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of PIN welding technology, specifically relating to a PIN feeding mechanism and an ultrasonic welding device. Background Technology
[0002] PIN pins are conductive metal materials used to transmit electrical signals. They are widely used in electronic products such as electronic connectors. PIN pins are particularly widely used in the IGBT industry, especially when soldering semiconductor components, where PIN pins need to be soldered onto the electronic components.
[0003] Currently, when the welding head retrieves the pin, the pin moves directly to the positioning fixture at the pin retrieval position after exiting the vibratory feeder. The welding head then moves a long distance (XYZ) from the welding position to the pin retrieval position to retrieve the pin. After retrieval, it returns to the welding position along the original trajectory. This long-distance reciprocating movement is required for each pin welded, reducing production efficiency. Furthermore, the pin feeding process suffers from inaccurate positioning, difficulty in continuous feeding, and unstable pin posture. On the other hand, the long-distance reciprocating movement of the pin welding machine leads to severe wear on the moving parts, shortening the product's lifespan.
[0004] Therefore, it is necessary to improve upon the shortcomings of existing technologies in order to overcome their deficiencies in practical applications. Utility Model Content
[0005] Based on the aforementioned shortcomings and deficiencies in the prior art, one of the objectives of this utility model is to at least solve one or more of the aforementioned problems in the prior art. In other words, one of the objectives of this utility model is to provide a PIN needle feeding mechanism and an ultrasonic welding device that meet one or more of the aforementioned requirements.
[0006] To achieve the above-mentioned objectives, this utility model adopts the following technical solution:
[0007] This utility model provides a PIN needle feeding mechanism, including a fixed base, a feeding tube, a buffer mechanism, a transfer mechanism, a first driving mechanism, and a second driving mechanism. The first driving mechanism is mounted on the fixed base and is drivenly connected to the buffer mechanism. The buffer mechanism is mounted on the fixed base, and the feeding tube is connected to the buffer mechanism. The buffer mechanism has a needle channel inside. The second driving mechanism is mounted on the fixed base and is drivenly connected to the transfer mechanism.
[0008] The feeding tube is used to transport the PIN to the buffer mechanism, the buffer mechanism is used to temporarily store the PIN, the first driving mechanism is used to transport the PIN in the buffer mechanism to the transfer mechanism, and the second driving mechanism is used to transfer the PIN in the transfer mechanism to the needle picking position.
[0009] As a preferred embodiment, the buffer mechanism includes a body, a sliding block, a limiting block, and a guide seat. The body is mounted on the fixed base, and the interior of the body is a hollow structure. The sliding block is connected to the limiting block and is located inside the body. The upper end of the body is connected to the feeding pipe, and the lower end of the body is provided with the guide seat.
[0010] As a preferred embodiment, the sliding block is provided with a needle channel running through it in the vertical direction, and the guide seat is provided with a guide hole running through it in the vertical direction. The guide hole is staggered with the feeding tube.
[0011] As a preferred embodiment, the body is provided with a limiting groove, and the limiting block cooperates with the limiting groove to adjust the working position of the sliding block; when the sliding block is in the first working position, the needle track is arranged opposite to the feeding tube, and when the sliding block is in the second working position, the needle track is arranged opposite to the guide hole.
[0012] As a preferred embodiment, the lower end of the body is provided with an adsorption hole, which is arranged directly opposite the feeding pipe.
[0013] As a preferred embodiment, the first driving mechanism includes a cylinder connected to the fixed base, and the output end of the cylinder is connected to the sliding block.
[0014] As a preferred embodiment, the second drive mechanism includes an electric cylinder, the cylinder body of which is mounted on the fixed base, and the output end of the electric cylinder is connected to the transfer mechanism.
[0015] As a preferred embodiment, the transfer mechanism includes a connecting arm, a needle holder, and a limiting component. The connecting arm is connected to the output end of the electric cylinder. The connecting arm is provided with a limiting component and a needle holder. The limiting component is used to limit the needle holder, and the needle holder is used to place the PIN needle.
[0016] As a preferred embodiment, when the transfer mechanism is in the first working position, the guide hole is arranged opposite to the needle holder; when the transfer mechanism is in the second working position, the needle holder moves to the needle picking position.
[0017] This utility model also provides an ultrasonic welding device, including a welding head and a PIN feeding mechanism as described in any of the above embodiments, wherein the welding head is used to pick up the PIN at the PIN pick-up position for ultrasonic welding.
[0018] Compared with the prior art, the advantages of this utility model are:
[0019] This utility model provides a PIN feeding mechanism. Through a buffer structure, PINs can be temporarily stored during the feeding process, avoiding soldering interruptions or PIN accumulation caused by unstable feeding. Through the coordinated action of the first and second driving mechanisms, the PINs can be accurately transported to the transfer mechanism along a preset path and further transferred to the PIN picking position, greatly improving the accuracy and continuity of feeding.
[0020] This utility model provides a PIN feeding mechanism that ensures the stability of the PIN's posture during the transfer process, avoids the problem of reduced welding accuracy caused by unstable PIN posture, achieves precise positioning and efficient supply of PIN, significantly improves welding quality stability and production cycle time, and reduces human intervention and defect rate. Attached Figure Description
[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other embodiments can be obtained from these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of the structure of a PIN needle feeding mechanism according to an embodiment of the present utility model;
[0023] Figure 2 This is a schematic diagram of another state of a PIN needle feeding mechanism according to an embodiment of this utility model;
[0024] Figure 3 This is a cross-sectional view of a PIN needle feeding mechanism according to an embodiment of the present utility model;
[0025] Figure 4 This is another cross-sectional view of a PIN needle feeding mechanism according to an embodiment of the present utility model;
[0026] Figure 5 This is a schematic diagram of the state when the soldering head picks up the PIN pin according to an embodiment of the present invention;
[0027] Figure 6 This is a schematic diagram of the PIN pin structure according to an embodiment of the present invention;
[0028] In the diagram: 1. Fixed base, 2. Feeding tube, 3. Buffer mechanism, 31. Body, 311. Limiting groove, 312. Adsorption hole, 32. Sliding block, 321. Needle path, 33. Limiting block, 34. Guide seat, 341. Guide hole, 4. Transfer mechanism, 41. Connecting arm, 42. Needle seat, 43. Limiting component, 5. First drive mechanism, 51. Cylinder, 6. Second drive mechanism, 61. Electric cylinder, 7. Welding head, 8. PIN pin. Detailed Implementation
[0029] To more clearly illustrate the embodiments of this application, the specific implementation methods of this application will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this application. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.
[0030] In the description of the embodiments of this application, the terms "upper," "lower," "front," "rear," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first," "second," etc., are only used for distinction in description and have no special meaning.
[0031] According to some embodiments of this application, please refer to Figures 1 to 6 As shown, a PIN needle feeding mechanism is provided, including a fixed base 1, a feeding tube 2, a buffer mechanism 3, a transfer mechanism 4, a first driving mechanism 5, and a second driving mechanism 6. The first driving mechanism 5 is mounted on the fixed base 1 and is drivenly connected to the buffer mechanism 3. The buffer mechanism 3 is mounted on the fixed base 1, and the feeding tube 2 is connected to the buffer mechanism 3. The buffer mechanism 3 has a needle channel inside. The second driving mechanism 6 is mounted on the fixed base 1 and is drivenly connected to the transfer mechanism 4. The feeding tube 2 is used to transport PIN needles to the buffer mechanism 3. The buffer mechanism 3 is used to temporarily store PIN needles. The first driving mechanism 5 is used to transport the PIN needles in the buffer mechanism 3 to the transfer mechanism 4. The second driving mechanism 6 is used to transfer the PIN needles in the transfer mechanism 4 to the needle picking position.
[0032] In some embodiments of this application, the buffer mechanism 3 is the core structure of the feeding mechanism. The buffer mechanism 3 includes a body 31, a sliding block 32, a limiting block 33, and a guide seat 34. The body 31 is mounted on the fixed base 1. The interior of the body 31 is a hollow structure, which provides space for the vertical movement of the sliding block 32. The sliding block 32 is connected to the limiting block 33 and is located inside the body 31, sliding together inside the body 31. The upper end of the body 31 is connected to the feeding tube 2, and the lower end of the body 31 is provided with the guide seat 34. The PIN pins in the feeding tube 2 are fed into the guide seat 34 through the temporary storage mechanism 3.
[0033] Furthermore, the sliding block 32 is provided with a needle channel 321 running through it in the vertical direction, so that the PIN needle can pass through smoothly and achieve precise positioning. The guide seat 34 is provided with a guide hole 341 running through it in the vertical direction, and the guide hole 341 is staggered with the feeding tube 2 to ensure the stability and accuracy of the PIN needle during the transfer process.
[0034] Furthermore, the main body 31 is provided with a limiting groove 311, and the limiting block 33 cooperates with the limiting groove 311. Through this cooperation, the working position of the sliding block 32 can be precisely adjusted. When the sliding block 32 is in the first working position, that is, when the sliding block is at the rightmost end, the needle channel 321 is arranged opposite to the feeding tube 2. At this time, the PIN needle can smoothly enter the needle channel 321 from the feeding tube 2. When the sliding block 32 is in the second working position, that is, when the sliding block is at the leftmost end, the needle channel 321 is arranged opposite to the guide hole 341. The PIN needle can then enter the transfer mechanism 4 below through the guide hole 341.
[0035] Furthermore, a guide seat 34 is provided at the lower end of the main body 31. The guide hole 341 on the guide seat 34 is misaligned with the feeding tube 2. As the cylinder 51 of the first drive mechanism 5 moves, it pushes the sliding block 32 to the left to the second working position. At this time, the needle path 321 is aligned with the guide hole 341, and the PIN needle can enter the transfer mechanism 4 below through the guide hole 341.
[0036] Furthermore, the lower end of the main body 31 is also provided with an adsorption hole 312, which is arranged directly opposite the feeding tube 2 and connected to a vacuum adsorption device to ensure the entry and positioning of the PIN needle, thereby further improving the accuracy of feeding. Throughout the feeding process, the posture of the PIN needle is effectively controlled. Whether it enters the buffer mechanism 3 from the feeding tube 2, is transferred from the buffer mechanism 3 to the transfer mechanism 4, or is finally picked up by the soldering head 7 for soldering, it maintains a high degree of stability and consistency.
[0037] In some embodiments of this application, the transfer mechanism 4 includes a connecting arm 41, a needle holder 42, and a limiting component 43. The connecting arm 41 is connected to the output end of the electric cylinder 61. The connecting arm 41 is provided with a limiting component 43 and a needle holder 42. The limiting component 43 is used to limit the needle holder 42, and the needle holder 42 is used to place the PIN needle.
[0038] Furthermore, when the transfer mechanism 4 is in the first working position, that is, at the rightmost end, the guide hole 341 is aligned with the needle holder 42. When the transfer mechanism 4 is in the second working position, that is, at the leftmost end, the needle holder 42 moves to the needle picking position. Driven by the electric cylinder 61 of the second drive mechanism 6, the connecting arm 41 of the transfer mechanism 4 moves horizontally, accurately transporting the PIN needle placed on the needle holder 42 to the needle picking position. The limiting components 43 on both sides of the needle holder 42 ensure the stability of the PIN needle during transportation, preventing positioning inaccuracies caused by shaking.
[0039] In some embodiments of this application, the first driving mechanism 5 includes a cylinder 51, which is connected to the fixed base 1, and the output end of the cylinder 51 is connected to the sliding block 32. The cylinder 51 drives the sliding block 32 to slide up and down inside the body 31 through a telescopic action, thereby realizing the precise positioning and delivery of the PIN needle in the buffer mechanism 3. When the cylinder 51 pushes the sliding block 32 to the first working position, the PIN needle in the feeding tube 2 can smoothly enter the needle channel 321; when the cylinder 51 pulls the sliding block 32 to the second working position, the needle channel 321 is aligned with the guide hole 341, and the PIN needle can enter the transfer mechanism 4 through the guide hole 341.
[0040] In some embodiments of this application, the second drive mechanism 6 includes an electric cylinder 61, the cylinder body of which is mounted on the fixed base 1, and the output end of the electric cylinder 61 is connected to the transfer mechanism 4. The electric cylinder 61 drives the transfer mechanism 4 to move horizontally through horizontal extension and retraction, thereby accurately transporting the PIN needle placed on the needle holder 42 to the needle picking position, making the PIN needle transport process more stable, efficient, and with higher positioning accuracy.
[0041] According to some embodiments of this application, such as Figure 6 As shown, an ultrasonic welding device is also provided, including a welding head and a PIN feeding mechanism as described above. The welding head is used to pick up the PIN at the picking position for ultrasonic welding. By integrating the aforementioned PIN feeding mechanism, this ultrasonic welding device achieves automation and high efficiency in the welding process. After accurately picking up the PIN at the picking position, the welding head 7 quickly moves to the welding position for welding, eliminating the need for long-distance back-and-forth movement and greatly improving production efficiency. Due to the precise positioning and stable posture of the PIN during the feeding process, the welding quality is also significantly improved, and the scrap rate is greatly reduced.
[0042] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.
[0043] The above description is only a detailed explanation of the preferred embodiments and principles of this application. For those skilled in the art, there may be changes in the specific implementation based on the ideas provided by this utility model, and these changes should also be considered within the scope of protection of this application.
Claims
1. A PIN needle feeding mechanism, characterized in that, It includes a fixed base, a feeding tube, a buffer mechanism, a transfer mechanism, a first drive mechanism, and a second drive mechanism. The first drive mechanism is mounted on the fixed base and is drivenly connected to the buffer mechanism. The buffer mechanism is mounted on the fixed base and the feeding tube is connected to the buffer mechanism. The buffer mechanism has a needle channel inside. The second drive mechanism is mounted on the fixed base and is drivenly connected to the transfer mechanism. The feeding tube is used to transport the PIN to the buffer mechanism, the buffer mechanism is used to temporarily store the PIN, the first driving mechanism is used to transport the PIN in the buffer mechanism to the transfer mechanism, and the second driving mechanism is used to transfer the PIN in the transfer mechanism to the needle picking position.
2. The PIN feeding mechanism according to claim 1, characterized in that, The buffer mechanism includes a body, a sliding block, a limiting block, and a guide seat. The body is mounted on the fixed base and has a hollow interior. The sliding block is connected to the limiting block and is located inside the body. The upper end of the body is connected to the feeding pipe, and the lower end of the body is provided with the guide seat.
3. A PIN feeding mechanism according to claim 2, characterized in that, The sliding block is provided with a needle channel running through it in the vertical direction, and the guide seat is provided with a guide hole running through it in the vertical direction. The guide hole is staggered with the feeding tube.
4. A PIN feeding mechanism according to claim 3, characterized in that, The main body has a limiting groove inside, and the limiting block cooperates with the limiting groove to adjust the working position of the sliding block; when the sliding block is in the first working position, the needle track is arranged opposite to the feeding tube; when the sliding block is in the second working position, the needle track is arranged opposite to the guide hole.
5. A PIN feeding mechanism according to claim 2, characterized in that, The lower end of the main body is provided with an adsorption hole, which is arranged opposite to the feeding pipe.
6. A PIN feeding mechanism according to claim 2, characterized in that, The first driving mechanism includes a cylinder, which is connected to the fixed base, and the output end of the cylinder is connected to the sliding block.
7. A PIN feeding mechanism according to claim 3, characterized in that, The second drive mechanism includes an electric cylinder, the cylinder body of which is mounted on the fixed base, and the output end of which is connected to the transfer mechanism.
8. A PIN feeding mechanism according to claim 7, characterized in that, The transfer mechanism includes a connecting arm, a needle holder, and a limiting component. The connecting arm is connected to the output end of the electric cylinder. The connecting arm is provided with a limiting component and a needle holder. The limiting component is used to limit the needle holder, and the needle holder is used to place the PIN needle.
9. A PIN feeding mechanism according to claim 8, characterized in that, When the transfer mechanism is in the first working position, the guide hole is arranged opposite to the needle holder. When the transfer mechanism is in the second working position, the needle holder moves to the needle picking position.
10. An ultrasonic welding apparatus, characterized in that, It includes a welding head and a PIN feeding mechanism as described in any one of claims 1 to 9, wherein the welding head is used to pick up the PIN at the PIN pick-up position for ultrasonic welding.