Aerodynamic limiting tool for metal ceramic package outline semiconductor discrete device

Abstract

The utility model discloses a metal ceramic packaging appearance semiconductor discrete device pneumatic limit frock, include: mount, two groups of presser jaw, two groups presser jaw are respectively located the top of fixed frame both sides, put thing subassembly, put thing subassembly locates fixed frame on, and can ascend or descend along vertical direction, and can place the workpiece fixture that is equipped with on put thing subassembly, and drive fixture to ascend and abut with two presser jaw to fix fixture to facilitate external equipment to process the workpiece on fixture.

Description

Technical Field

[0001] This utility model relates to the field of semiconductor technology, specifically to a pneumatic limiting fixture for a metal-ceramic packaged semiconductor discrete device. Background Technology

[0002] In the production process of metal-ceramic packaged discrete semiconductor devices, it is usually necessary to securely fix a special fixture containing the workpiece at the processing station so that external equipment (such as laser marking machines, test probe stations, welding equipment, etc.) can accurately process or inspect it. Traditional fixing methods often use manual screw locking, clips, or simple mechanical limiting structures, which have obvious shortcomings:

[0003] Each time a fixture or workpiece is changed, manual locking or loosening is required, which is time-consuming and affects the production line cycle. Manual operation may be laborious and prone to errors or fatigue under frequent operation. Furthermore, inconsistent manual locking force may cause slight displacement or deformation of the fixture, affecting the accuracy and consistency of subsequent processing. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in related technologies. Therefore, one objective of this utility model is to provide a pneumatic limiting fixture for metal-ceramic packaged semiconductor discrete devices, comprising:

[0005] Fixture;

[0006] Two sets of pressure claws are respectively located on the top of both sides of the fixing frame;

[0007] The placement assembly is mounted on the fixed frame and can rise or fall vertically. A workpiece fixture can be placed on the placement assembly, and the fixture is raised to abut against the two pressure claws to fix the fixture, so that external equipment can process the workpiece on the fixture.

[0008] Preferably, the fixing frame is provided with support blocks on both sides, and the support blocks are in the shape of a "T".

[0009] Preferably, the support block is positioned at a height higher than the top of the fixing frame.

[0010] Preferably, each group of pressure claws has at least two claws, which are equally spaced on the support blocks on both sides of the fixing frame.

[0011] Preferably, the fixing frame is provided with a fixing plate, and the fixing plate is spaced apart from the bottom of the fixing frame.

[0012] Preferably, the storage component includes:

[0013] Multiple support members are provided on the fixing plate at equal intervals;

[0014] A cylinder, which is vertically mounted on a plurality of the support members;

[0015] A shelf is provided on top of the fixed frame, and the transmission end of the cylinder is connected to the bottom of the shelf.

[0016] Preferably, the storage board has a storage groove in the middle, one end of which is through the storage board and the other end is closed.

[0017] The above-described solution of this utility model has at least the following beneficial effects:

[0018] The operator (or automated robotic arm) places the fixture containing the workpiece onto the placement assembly, and then drives the placement assembly to rise vertically. As the placement assembly rises, the fixture on it also rises. When the fixture rises to a certain height, its two sides (or specific parts) will contact and abut against the two sets of pressure claws fixed at the top of the fixed frame. At this time, the pressure claws exert a downward limiting force on the fixture, while the rising placement assembly exerts an upward supporting force on the fixture. Under the combined action of these two opposing forces, the fixture is reliably clamped and fixed between the placement assembly and the pressure claws. After the fixture is firmly fixed, external equipment can perform the required processing or inspection operations on the workpiece on the fixture. After processing is completed, the placement assembly descends vertically. The descent of the placement assembly causes the fixture to disengage from the pressure claws, releasing the clamping force. At this time, the fixture and the workpiece can be easily removed.

[0019] Simply place the fixture and start the lifting mechanism to automatically fix it; once processing is complete, it can be released by lowering it down. This significantly simplifies the operation steps, greatly shortens the fixture replacement and fixing time, and improves production efficiency. Utilizing the vertical upward movement of the placement component, the fixture is precisely pushed to the position where it abuts against the fixed clamping jaws. This mechanical hard-limiting method ensures that the fixture is fixed in the same precise position every time, with high positioning accuracy and good repeatability, providing a reliable foundation for subsequent processing. By controlling the magnitude and stroke of the pneumatic force driving the placement component to rise, the clamping force of the clamping jaws on the fixture can be indirectly controlled, avoiding problems of excessive looseness (shaking) or excessive tightness (damage) caused by uneven manual operation.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 This utility model provides a pneumatic limiting fixture for metal-ceramic packaged semiconductor discrete devices.

[0023] Figure 2 yes Figure 1 A schematic diagram of the AA cross-sectional structure.

[0024] Explanation of icon numbers:

[0025] 1. Fixture, 2. Pressure claw, 3. Storage assembly;

[0026] 101. Support block; 102. Fixing plate;

[0027] 301. Support component; 302. Cylinder; 303. Shelf;

[0028] 3031. Storage tray.

[0029] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] The following describes in detail, with reference to the accompanying drawings, the pneumatic limiting fixture for the metal-ceramic packaged semiconductor discrete device of this utility model.

[0036] Please see Figures 1-2In this embodiment, it includes: a fixed frame 1; two sets of pressure claws 2, which are respectively disposed on the top of both sides of the fixed frame 1; and a placement assembly 3, which is disposed on the fixed frame 1 and can rise or fall vertically. The placement assembly 3 can hold a workpiece fixture and drive the fixture to rise and abut against the two pressure claws 2 to fix the fixture, so that external equipment can process the workpiece on the fixture.

[0037] The operator (or automated robotic arm) places the fixture containing the workpiece on the placement component 3, and then drives the placement component 3 to rise vertically. As the placement component 3 rises, the fixture placed on it also rises. When the fixture rises to a certain height, its two sides (or specific parts) will contact and abut against the two sets of pressure claws 2 fixed at the top of the two sides of the fixing frame 1. At this time, the pressure claws 2 exert a downward limiting force on the fixture, while the rising placement component 3 exerts an upward supporting force on the fixture. Under the combined action of these two opposing forces, the fixture is reliably clamped and fixed between the placement component 3 and the pressure claws 2. After the fixture is firmly fixed, the external equipment can perform the required processing or inspection operations on the workpiece on the fixture. After processing is completed, the placement component 3 descends vertically. The descent of the placement component 3 causes the fixture to disengage from the pressure claws 2, releasing the clamping force. At this time, the fixture and the workpiece can be easily removed.

[0038] Simply place the fixture and start the lifting mechanism to automatically complete the fixing; once processing is complete, it can be released by descending; this significantly simplifies the operation steps, greatly shortens the fixture replacement and fixing time, and improves production efficiency; by utilizing the vertical upward movement of the placement component 3, the fixture is precisely pushed to the position where it abuts against the fixed pressure claw 2; this mechanical hard limit method ensures that the fixture is fixed in the same precise position every time, with high positioning accuracy and good repeatability, providing a reliable foundation for subsequent processing; by controlling the magnitude and stroke of the pneumatic force driving the placement component 3 to rise, the clamping force of the pressure claw 2 on the fixture can be indirectly controlled, avoiding problems of excessive looseness (shaking) or excessive tightness (damage) caused by uneven manual operation force.

[0039] In this embodiment, support blocks 101 are provided on both sides of the fixing frame 1, and the support blocks 101 are in the shape of "T". The height of the support blocks 101 is higher than the top of the fixing frame 1. Each set of pressure claws 2 is provided with at least two, and they are provided at equal intervals on the support blocks 101 on both sides of the fixing frame 1.

[0040] The T-shaped support blocks 101 are securely mounted on both sides of the fixing frame 1, serving as a dedicated mounting platform for the pressure claws 2. Their T-shaped structure provides a larger contact area and stability, ensuring that the pressure claws 2 will not loosen or tilt under load. The top of the support block 101 is higher than the top of the fixing frame 1, which elevates the pressure claws 2 mounted on the support block 101. This elevated position is the target height that the fixture needs to reach and make contact with the pressure claws 2 when the placement assembly 3 raises with the fixture. Each set of pressure claws 2 has at least two (usually two or more). Furthermore, they are evenly spaced on the support block 101; when the fixture is pushed upward by the placement component 3, both sides (or specific parts) of the fixture will simultaneously and evenly contact these evenly spaced pressure claws 2; under the action of the lifting force of the placement component 3, the fixture is lifted upward, and its two sides simultaneously abut against multiple pressure claws 2 that are equally high and evenly spaced; these pressure claws 2 together exert a downward and evenly distributed reaction force (limiting force) on the fixture. Since the pressure claws 2 are fixed on the support block 101 that is higher than the top of the fixing frame 1, they provide a precise and stable limiting plane for the fixture.

[0041] In this embodiment, the fixing frame 1 is provided with a fixing plate 102, which is spaced apart from the bottom of the fixing frame 1; the storage assembly 3 includes: multiple support members 301, which are equally spaced on the fixing plate 102; a cylinder 302, which is vertically mounted on the multiple support members 301; a storage plate 303, which is located on the top of the fixing frame 1, and the transmission end of the cylinder 302 is connected to the bottom of the storage plate 303; a storage groove 3031 is provided in the middle of the storage plate 303, one end of the storage groove 3031 is through the storage plate 303, and the other end is closed.

[0042] The fixing plate 102 is located inside the fixing frame 1 and is suspended from the bottom of the fixing frame 1. This provides an independent, stable and flat mounting base for the core components of the storage assembly 3 (support member 301, cylinder 302), freeing them from vibration, unevenness or debris interference that may exist at the bottom of the fixing frame 1. Multiple support members 301 are installed on the fixing plate 102 at equal intervals. This layout ensures uniform force distribution. The cylinder 302 is vertically installed on these support members 301. The transmission end (piston rod) of the cylinder 302 is directly connected to the bottom center or appropriate position of the storage plate 303. When the cylinder 302 is inflated (intakes air), the piston rod extends upward and vertically pushes the storage plate 303 upward. When the cylinder 302 is deflated (releases air), the piston rod retracts downward and drives the storage plate 303 downward.

[0043] The middle of the placement plate 303 has a special placement groove 3031 for accommodating and positioning the fixture containing the workpiece. The fixture has a single-sided through-hole design (one end is open and the other end is closed), which allows the fixture to slide horizontally into or be pushed into the placement groove 3031 from the side. The operation is extremely convenient and there is no need to align it from above. When the fixture is pushed into the placement groove 3031 to the bottom, the closed end plays a reliable axial positioning (stop) role, ensuring that the front and back positions of the fixture are accurate and consistent each time it is placed.

[0044] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0045] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A pneumatic limiting fixture for a metal-ceramic packaged semiconductor discrete device, characterized in that, include: Fixture; Two sets of pressure claws are respectively located on the top of both sides of the fixing frame; The placement assembly is mounted on the fixed frame and can rise or fall vertically. A workpiece fixture can be placed on the placement assembly, and the fixture is raised to abut against the two pressure claws to fix the fixture, so that external equipment can process the workpiece on the fixture.

2. The pneumatic limiting fixture for a metal-ceramic packaged semiconductor discrete device according to claim 1, characterized in that, The fixing frame has support blocks on both sides, and the support blocks are T-shaped.

3. The cermet package outline semiconductor discrete device aerodynamic limiting tooling of claim 2, wherein, The support block is positioned at a height higher than the top of the fixing frame.

4. The pneumatic limiting fixture for a metal-ceramic packaged semiconductor discrete device according to claim 2, characterized in that, Each set of pressure claws has at least two claws, which are equally spaced on the support blocks on both sides of the fixing frame.

5. The pneumatic limiting fixture for a metal-ceramic packaged semiconductor discrete device according to claim 1, characterized in that, The fixing frame is provided with a fixing plate, which is spaced apart from the bottom of the fixing frame.

6. The cermet package outline semiconductor discrete device aerodynamic limiting tooling of claim 5, wherein, The storage component includes: Multiple support members are provided on the fixing plate at equal intervals; A cylinder, which is vertically mounted on a plurality of the support members; A shelf is provided on top of the fixed frame, and the transmission end of the cylinder is connected to the bottom of the shelf.

7. The cermet package outline semiconductor discrete device aerodynamic limiting tooling of claim 6, wherein, The shelf has a storage slot in the middle, one end of which is through the shelf and the other end is closed.

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