Positioning jig

Abstract

The application relates to the technical field of welding jigs, in particular to a positioning jig used for positioning a substrate and a pin, wherein the substrate is arranged on a base plate; the positioning jig comprises a positioning frame arranged on the base plate and used for positioning the substrate on the base plate, and a positioning assembly movably arranged on the positioning frame, wherein the positioning assembly is provided with a positioning channel used for positioning the pin, and the positioning assembly and the positioning frame are kept follow-up, so that the positioning channel is perpendicular to the surface of the substrate; the positioning jig can position the pin for the base plates with different cambers, and the mold opening cost is reduced.

Description

Technical Field

[0001] This application relates to the field of welding fixture technology, and more particularly to a positioning fixture. Background Technology

[0002] Power module fixtures are primarily used as positioning tools for reflow soldering tiny components such as chips, integrated pins, and holders onto a ceramic substrate (DBC). This tool improves the soldering quality between the components and the substrate and reduces the displacement of small components due to gas disturbance during the soldering process, thereby improving positional accuracy.

[0003] When reflow soldering the substrate and pins of the existing power module, an integrated fixture is used to position the pins. The heat sink of the power module is set with a certain arch at the factory. The integrated fixture needs to be machined to match the specific arch, and one type of arch corresponds to one type of fixture, which increases the mold opening cost. Summary of the Invention

[0004] The purpose of this application is to provide a positioning fixture that can position pins for base plates with different cambers, thereby reducing mold opening costs.

[0005] Therefore, this application provides a positioning fixture for positioning a substrate and a pin, wherein the substrate is disposed on a base plate; the positioning fixture includes: a positioning frame disposed on the base plate for positioning the substrate on the base plate; and a positioning component movably disposed on the positioning frame, wherein the positioning component is provided with a positioning channel for positioning the pin, and the positioning component moves with the positioning frame so that the positioning channel is perpendicular to the surface of the substrate.

[0006] In one possible implementation, multiple substrates are arranged along a first direction, and multiple positioning components are arranged along the first direction.

[0007] In one possible implementation, a first slot is provided on the side of the positioning frame facing the positioning component, and a first positioning post is provided on the positioning component to be inserted into the first slot.

[0008] In one possible implementation, a second slot is provided on the side of the base plate facing the positioning frame, and a second positioning post is provided on the positioning frame to be inserted into the second slot.

[0009] In one possible implementation, the positioning frame includes two positioning blocks arranged opposite each other, and a positioning area for positioning the substrate is formed between the two positioning blocks and between two adjacent positioning frames.

[0010] In one possible implementation, the positioning component includes: a positioning plate disposed on the positioning frame, the positioning plate having a first positioning hole extending along a second direction; and a cover plate disposed on the positioning plate and slidable along the second direction, the cover plate having a second positioning hole extending along the second direction, the second positioning hole at least partially overlapping the first positioning hole, the overlapping portion of the second positioning hole and the first positioning hole forming a positioning channel; wherein, the second direction is perpendicular to the first direction.

[0011] In one possible implementation, the width of the first positioning hole is gradually widened along the second direction, and the width of the second positioning hole is gradually narrowed along the second direction, so that the radius of the inscribed circle of the overlapping portion of the first and second positioning holes changes as the cover plate slides along the second direction.

[0012] In one possible implementation, the positioning plate has a groove along a second direction on the side facing the cover plate, and the cover plate has a guide block that slides along the groove.

[0013] In one possible implementation, the positioning plate is provided with an adjustment hole communicating with the slide groove along the second direction, an adjustment plate is slidably disposed in the adjustment hole, part of the adjustment plate is located in the slide groove, and the positioning plate is provided with fasteners for securing the adjustment plate.

[0014] In one possible implementation, two adjacent positioning plates are engaged by positioning slots to position multiple positioning plates in a first direction.

[0015] In one possible implementation, the positioning fixture also includes a base for positioning the base plate.

[0016] According to the positioning fixture provided in the embodiments of this application, the positioning fixture positions the substrate on the base plate through the positioning frame. The positioning component is movably disposed on the positioning frame and corresponds to multiple substrates respectively. The positioning pin is positioned through the positioning channel on the positioning component. After the pin passes through the positioning channel, it abuts against the surface of the substrate. During the welding process, since the substrate is attached to the base plate, the substrate will tilt as the arch of the base plate changes. The positioning component will tilt synchronously with the positioning frame to ensure that the positioning channel is perpendicular to the surface of the substrate. This enables the positioning of pins for base plates with different arches, reducing mold opening costs. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0019] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0020] Figure 1 This diagram shows an exploded view of a positioning fixture, base plate, base plate, and pin provided in an embodiment of this application.

[0021] Figure 2 This diagram illustrates an explosion of a positioning component according to an embodiment of this application.

[0022] Figure 3 This diagram illustrates the structure of a positioning plate and a cover plate according to an embodiment of this application.

[0023] Figure 4 This is a three-dimensional schematic diagram of a positioning frame provided in an embodiment of this application;

[0024] Figure 5 This illustration shows a schematic diagram of a positioning channel formed by the overlapping portion of a first positioning hole and a second positioning hole, according to an embodiment of this application.

[0025] Figure 6 This illustration shows a structural diagram of a base and base plate provided in an embodiment of this application;

[0026] Figure 7 This illustration shows a schematic diagram of the structure of a base plate, a substrate, and pins assembled according to an embodiment of this application.

[0027] Figure 8 This diagram illustrates another embodiment of the present application in which the overlapping portion of the first positioning hole and the second positioning hole forms a positioning channel.

[0028] Explanation of reference numerals in the attached figures:

[0029] X, first direction; Y, second direction;

[0030] 1. Positioning frame; 11. First slot; 12. Second positioning post; 13. Positioning block; 14. Positioning area;

[0031] 2. Positioning component; 21. Positioning channel; 22. First positioning post; 23. Positioning plate; 231. First positioning hole; 232. Slide groove; 233. Adjusting plate; 234. Fastener; 235. Positioning slot; 24. Cover plate; 241. Second positioning hole; 242. Guide block;

[0032] 3. Base; 4. Base plate; 41. Second slot; 5. Base plate; 6. Pin. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] The following disclosure provides many different embodiments or examples for implementing different structures of the embodiments of this application. To simplify the disclosure of the embodiments of this application, components and arrangements of specific examples are described below. Of course, these are merely examples and are not intended to limit the embodiments of this application. Furthermore, reference numerals and / or letters may be repeated in different examples of the embodiments of this application. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0035] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0036] To address the problems in the prior art, this application provides a positioning fixture that can position pins for base plates with different cambers, thereby reducing mold opening costs.

[0037] Figure 1 This diagram shows an exploded view of a positioning fixture, base plate, base plate, and pin provided in an embodiment of this application. Figure 2 This diagram illustrates an explosion of a positioning component according to an embodiment of this application. Figure 3 This diagram illustrates the structure of a positioning plate and a cover plate according to an embodiment of this application. Figure 4 This is a three-dimensional schematic diagram of a positioning frame provided in an embodiment of this application; Figure 5 This illustration shows a schematic diagram of a positioning channel formed by the overlapping portion of a first positioning hole and a second positioning hole, according to an embodiment of this application. Figure 6 This illustration shows a structural diagram of a base and base plate provided in an embodiment of this application; Figure 7 This illustration shows a schematic diagram of the structure of a base plate, a substrate, and pins assembled according to an embodiment of this application. Figure 8 This diagram illustrates another embodiment of the present application in which the overlapping portion of the first positioning hole and the second positioning hole forms a positioning channel.

[0038] like Figure 1-8 As shown, this application embodiment provides a positioning fixture for positioning a substrate 5 and a pin 6. The substrate 5 is disposed on a base plate 4. The positioning fixture includes: a positioning frame 1, disposed on the base plate 4, for positioning the substrate 5 on the base plate 4; and a positioning component 2, movably disposed on the positioning frame 1. The positioning component 2 corresponds to multiple substrates 5 respectively. The positioning component 2 is provided with a positioning channel 21 for positioning the pin 6. The positioning component 2 moves with the positioning frame 1 so that the positioning channel 21 is perpendicular to the surface of the substrate 5.

[0039] like Figure 7 As shown, specifically, the base plate 4 is a heat sink, and the substrate 5 is a ceramic substrate. The heat sink supports the ceramic substrate and is used for heat dissipation. One heat sink typically supports multiple substrates 5 simultaneously. Multiple positioning components 2 are provided, each corresponding to a different substrate 5. Before welding, the base plate 4 has a certain arch, resembling a "smiley face," meaning the middle part of the base plate 4 is slightly bent downwards (towards the heat dissipation pin). During the welding process, the arch of the base plate 4 changes and gradually flattens under the action of the substrate 5. This is because the substrate 5 is made of DBC (ceramic material), which has a certain degree of hardness and remains flat without bending. Of course, even with the middle part of the base plate 4 slightly bent upwards, this application can still achieve the effect of keeping the substrate and base plate in sync.

[0040] In this application, the positioning frame 1 positions the substrate 5 on the base plate 4. The positioning component 2 is movably disposed on the positioning frame 1 and corresponds to multiple substrates 5 respectively. The pin 6 is positioned by the positioning channel 21 on the positioning component 2. After the pin 6 passes through the positioning channel 21, it abuts against the surface of the substrate 5. During the welding process, since the substrate 5 is attached to the base plate 4, the substrate 5 will tilt as the arch of the base plate 4 changes. The positioning component 2 will tilt synchronously with the positioning frame 1 to ensure that the positioning channel 21 is perpendicular to the surface of the substrate 5. This enables the positioning of the pin 6 for base plates 4 with different arches, reducing the mold opening cost.

[0041] In related technologies, the base plate 4 is set with a certain camber when it leaves the factory. Existing integrated fixtures need to be machined to match the specific camber, and each camber corresponds to a different fixture, which increases the mold opening cost. Moreover, the camber of the base plate 4 will change during reflow soldering, and the substrate 5 will change with the change of the camber of the base plate 4. At this time, the positioning points on the substrate 5 will change with the change of camber. The frame structure of the integrated fixture changes synchronously when the camber of the base plate 4 changes, which causes the positioning channel 21 for positioning the pin 6 to deviate from the positioning point on the substrate 5, affecting the positioning accuracy and welding quality. This application innovatively positions the positioning frame 1 on the base plate 4 by setting a positioning fixture, so that the positioning frame 1 can change synchronously with the change of the arch of the base plate 4. The base plate 5 inside the positioning frame 1 can tilt with the change of the arch of the base plate 4. The positioning component 2 changes synchronously with the positioning frame 1, ensuring that the positioning channel 21 for positioning the pin 6 and the surface of the base plate 5 can always remain perpendicular. This not only reduces the mold opening cost, but also ensures the positioning accuracy of the pin 6 and the base plate 5 when the arch of the base plate 4 changes during reflow soldering, thereby improving the soldering quality.

[0042] In some embodiments, a plurality of substrates 5 are arranged along a first direction X, and a plurality of positioning components 2 are arranged along a first direction X.

[0043] like Figure 1 As shown in this application, multiple substrates 5 are arranged along the first direction X, and multiple positioning components 2 are arranged along the first direction X. The first direction X is the length direction of the base plate 4. During the welding process, the camber of the base plate 4 in the first direction X changes, thereby causing the angle of the multiple substrates 5 on the base plate 4 to tilt. The positioning frame 1 is set on the base plate 4 and tilts synchronously, thereby causing the positioning components 2 set on the positioning frame 1 to tilt synchronously. This allows the positioning components 2 to remain parallel to the positioning frame 1, thereby ensuring that the pins 6 inserted on different positioning components 2 can remain perpendicular to the corresponding substrates 5, ensuring positioning accuracy and welding quality.

[0044] In some embodiments, the positioning frame 1 is provided with a first slot 11 on the side facing the positioning component 2, and the positioning component 2 is provided with a first positioning post 22 that is inserted into the first slot 11 on the side facing the positioning frame 1.

[0045] like Figure 1 , 2 As shown in Figure 4, in this application, the first positioning post 22 on the positioning component 2 is inserted into the first slot 11 of the positioning frame 1 to complete the assembly of the positioning component 2 and the positioning frame 1, so that the positioning component 2 can only move in a direction perpendicular to the positioning frame 1, thereby keeping the positioning component 2 and the positioning frame 1 parallel at all times.

[0046] Optionally, the first slot 11 can also be set on the positioning component 2, and the first positioning post 22 is set on the side of the positioning frame 1 facing the positioning component 2. By inserting and cooperating the first positioning post 22 with the first slot 11, it can also be ensured that the positioning component 2 can only move in a direction perpendicular to the positioning frame 1, so as to achieve the purpose of keeping the positioning component 2 and the positioning frame 1 parallel.

[0047] In some embodiments, a second slot 41 is provided on the side of the base plate 4 facing the positioning frame 1, and a second positioning post 12 is provided on the positioning frame 1 to be inserted into the second slot 41.

[0048] like Figure 1 , 4 As shown in Figure 6, in this application, the second positioning post 12 is inserted into the second slot 41 to complete the assembly of the positioning frame 1 and the base plate 4, so that the positioning frame 1 tilts as the arch of the base plate 4 changes. The base plate 5 is set on the base plate 4. As the arch of the base plate 4 changes, the base plate 5 tilts synchronously. The positioning frame 1 and the base plate 5 are in the same position on the base plate 4 and are both in contact with the base plate 4, thereby ensuring that the positioning frame 1 and the base plate 5 remain parallel. The positioning component 2 installed on the positioning frame 1 also remains parallel to the base plate 5.

[0049] Specifically, multiple positioning frames 1 are provided, and the multiple positioning frames 1 are arranged along the first direction X. The multiple positioning frames 1 form a positioning area 14 for positioning the base plate 5. When the camber of the base plate 4 changes, the positioning frames 1 located at different positions of the base plate 4 are tangent to the cambered base plate 4, so that the tilt angle of the positioning frames 1 at different positions is different, and the overall camber of the multiple positioning frames 1 is consistent with the camber of the base plate 4.

[0050] Optionally, the positioning frame 1 can also be set as an integral structure. The positioning frame 1 is made of flexible material, so that the positioning frame 1 can change its arch synchronously with the base plate 4. The positioning components 2 located at different positions of the positioning frame 1 are tangent to the positioning frame 1, so that the tilt angle of the positioning components 2 at different positions is different. The overall arch of the multiple positioning components 2 is consistent with the arch of the positioning frame 1 and the base plate 4. At this time, the positioning components 2 are tangent to the positioning frame 1.

[0051] In some embodiments, the positioning frame 1 includes two positioning blocks 13 disposed opposite to each other, and a positioning area 14 for positioning the substrate 5 is formed between the two positioning blocks 13 and between two adjacent positioning frames 1.

[0052] In this application, the positioning frame 1 includes two positioning blocks 13 arranged opposite each other, which facilitates the adjustment of the distance between the two positioning blocks 13 according to the size of the substrate 5, thereby making it suitable for substrates 5 of different sizes. A positioning area 14 for positioning the substrate 5 is formed between the two positioning blocks 13, and a positioning area 14 for positioning the substrate 5 can also be formed between two adjacent positioning frames 1. Specifically, there are two positioning frames 1 in this application, and a positioning area 14 is formed between the two positioning frames 1. Each positioning frame 1 includes two positioning areas 14 formed between the two oppositely arranged positioning blocks 13. The above structure forms a total of three positioning areas 14 for positioning three substrates 5.

[0053] Optionally, there can be three positioning frames 1. Each of the three positioning frames 1 forms a positioning area 14, and two adjacent positioning frames 1 form a positioning area 14, forming a total of five positioning areas 14 for positioning the five substrates 5. This can reduce the number of positioning frames 1 used, while also achieving the purpose of keeping the positioning components 2 parallel to the positioning frames 1.

[0054] In another embodiment of this application, the number of positioning frames 1 is the same as the number of substrates 5, that is, one positioning frame 1 positions one substrate 5. Optionally, the positioning frame 1 can also be an integral structure, and the interior of the positioning frame 1 forms a positioning area 14 for positioning the substrate 5, which is specifically used to position substrates 5 of a specific size to ensure the positioning accuracy of the substrate 5.

[0055] In some embodiments, the positioning component 2 includes: a positioning plate 23 disposed on the positioning frame 1, the positioning plate 23 having a first positioning hole 231 extending along the second direction Y; and a cover plate 24 disposed on the positioning plate 23 and slidable along the second direction Y, the cover plate 24 having a second positioning hole 241 extending along the second direction Y, the second positioning hole 241 at least partially overlapping the first positioning hole 231, the overlapping portion of the second positioning hole 241 and the first positioning hole 231 forming a positioning channel 21; wherein, the second direction Y is perpendicular to the first direction X.

[0056] like Figure 3 As shown in this application, the second direction Y is perpendicular to the first direction X. The first direction X and the second direction Y correspond to the length direction and width direction of the base plate 4, respectively. The positioning plate 23 is inserted into the positioning frame 1 through the first positioning post 22. The cover plate 24 is slidably disposed on the positioning plate 23. By sliding the cover plate 24 on the surface of the positioning plate 23 along the second direction Y, the overlapping area of ​​the first positioning hole 231 and the second positioning hole 241 is changed, thereby adjusting the effective inner diameter of the positioning channel 21. This can be applied to the positioning of pins 6 of different sizes, realizing the matching use of pins 6 of different diameters.

[0057] In related technologies, current integrated fixtures only have a positioning channel 21 of one specification, which can only position integrated pins 6 of one specification. They cannot position separate pins (including the pin body and the base), limiting their application scenarios. In this application, by making the positioning channel 21 adjustable, it can not only position integrated pins 6 of different specifications, but also separate pins, thus improving applicability.

[0058] In some embodiments, the width of the first positioning hole 231 is gradually widened along the second direction Y, and the width of the second positioning hole 241 is gradually narrowed along the second direction Y, so that the radius of the inscribed circle of the overlapping portion of the first positioning hole 231 and the second positioning hole 241 changes as the cover plate slides along the second direction Y.

[0059] like Figure 5 As shown in this application, the widths of the first positioning hole 231 and the second positioning hole 241 are gradually varied, and the first positioning hole 231 and the second positioning hole 241 are arranged opposite to each other. This allows the overlapping portion of the first positioning hole 231 and the second positioning hole 241 to be effectively adjusted when the cover plate 24 slides along the second direction Y. Since the widths of the first positioning hole 231 and the second positioning hole 241 are gradually varied, the size of the overlapping portion of the first positioning hole 231 and the second positioning hole 241 changes not only in the second direction Y, but also in the first direction X. This causes the radius of the inscribed circle of the overlapping portion of the first positioning hole 231 and the second positioning hole 241 to continuously change, which can be applied to positioning pins 6 of different sizes while ensuring the positioning effect of the pins 6.

[0060] like Figure 8As shown, optionally, the first positioning hole 231 includes a plurality of first semicircular holes with different inner diameters arranged sequentially along the second direction Y, and the second positioning hole 241 includes a plurality of second semicircular holes with different inner diameters arranged sequentially along the second direction Y. The first semicircular holes are provided with a plurality of different inner diameters, and the second semicircular holes are provided with a plurality of different inner diameters. The positioning channel 21 is formed by combining the first semicircular holes and the second semicircular holes with the same inner diameter. By forming positioning channels 21 with different inner diameters by using different combinations of first semicircular holes and second semicircular holes, positioning of pins 6 of different specifications can be achieved. This method can be used to specifically position pins 6 of a few sizes, making it convenient to adjust the size of the positioning channel 21, and reducing adjustment errors, thus ensuring the positioning effect of the positioning channel 21 on the pins 6.

[0061] In some embodiments, the positioning plate 23 is provided with a groove 232 along the second direction Y on the side facing the cover plate 24, and the cover plate 24 is provided with a guide block 242 that slides along the groove 232.

[0062] like Figure 2-3 As shown in this application, the relative sliding of the cover plate 24 and the positioning plate 23 in the second direction Y is achieved by the guide block 242 sliding along the slide groove 232. Specifically, there are two slide grooves 232 and two guide blocks 242. The two guide blocks 242 are respectively slidably disposed in the two slide grooves 232 to ensure that the cover plate 24 can slide along the second direction Y as much as possible, thereby ensuring the accuracy of the fit between the cover plate 24 and the positioning plate 23.

[0063] In some embodiments, the positioning plate 23 is provided with an adjustment hole communicating with the slide groove 232 along the second direction Y, and an adjustment plate 233 is slidably disposed in the adjustment hole. A portion of the adjustment plate 233 is located in the slide groove 232, and a fastener 234 for fastening the adjustment plate 233 is provided on the positioning plate 23.

[0064] like Figure 3 As shown in this application, the portion of the adjusting plate 233 extending into the slide groove 232 is adjusted by sliding the adjusting plate 233 along the adjusting hole. The portion of the adjusting plate 233 extending into the slide groove 232 is used to position the guide block 242. When the guide block 242 abuts against the adjusting plate 233, it indicates that the adjustment is complete. The adjusting plate 233 can be fastened by the fastener 234 to ensure the stability of the adjusting plate 233, thereby ensuring the positioning effect of the adjusting plate 233 on the guide block 242.

[0065] Specifically, only one set of adjusting plates 233 can be set, because the positioning fixture is placed horizontally during reflow soldering, and the cover plate 24 will generally not slide after its position is adjusted. Of course, two adjusting plates 233 can also be set, with the two adjusting plates 233 positioning the two guide blocks 242 respectively, thereby fixing the cover plate 24 in the second direction Y.

[0066] In some embodiments, two adjacent positioning plates 23 are engaged by positioning slots 235 to position multiple positioning plates 23 in the first direction X.

[0067] In this application, two adjacent positioning plates 23 are engaged by positioning slots 235, thereby ensuring that multiple positioning plates 23 are aligned in the first direction X, and ensuring the positioning accuracy of the pin 6 in the first direction X.

[0068] In some embodiments, the positioning fixture further includes a base 3 for positioning the base plate 4.

[0069] like Figure 1 and 6 As shown in this application, the base 3 is used to position the base plate 4. Specifically, the base 3 is provided with a third positioning post, and the base plate 4 is provided with a third slot. The base plate 4 is fixed by inserting the third positioning post into the third slot.

[0070] The positioning fixture positions the substrate 5 on the base plate 4 using the positioning frame 1. The positioning component 2 is movably mounted on the positioning frame 1 and corresponds to multiple substrates 5. The positioning component 2 positions the pin 6 through the positioning channel 21. After passing through the positioning channel 21, the pin 6 abuts against the surface of the substrate 5. During the welding process, as the substrate 5 is attached to the base plate 4, the substrate 5 will tilt as the arch of the base plate 4 changes. The positioning component 2 will tilt synchronously with the positioning frame 1 to ensure that the positioning channel 21 remains perpendicular to the surface of the substrate 5. This allows for the positioning of the pin 6 for base plates 4 with different arches, reducing mold opening costs.

[0071] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0072] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0073] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A positioning fixture for positioning a base plate (5) and a pin (6), said base plate (5) being disposed on a base plate (4), characterized in that, The positioning fixture includes: A positioning frame (1) is disposed on the base plate (4) for positioning the substrate (5) on the base plate (4); and A positioning component (2) is movably disposed on the positioning frame (1). The positioning component (2) is provided with a positioning channel (21) for positioning the pin (6). The positioning component (2) moves with the positioning frame (1) so that the positioning channel (21) is perpendicular to the surface of the substrate (5). The plurality of substrates (5) are arranged along a first direction, and the plurality of positioning components (2) are arranged along the first direction; The positioning component (2) includes: A positioning plate (23) is disposed on the positioning frame (1), and the positioning plate (23) is provided with a first positioning hole (231) extending in a second direction; and A cover plate (24) is disposed on the positioning plate (23) and can slide along the second direction. The cover plate (24) is provided with a second positioning hole (241) extending along the second direction. The second positioning hole (241) and the first positioning hole (231) at least partially overlap. The overlapping part of the second positioning hole (241) and the first positioning hole (231) forms the positioning channel (21). Wherein, the second direction is perpendicular to the first direction; The width of the first positioning hole (231) is gradually widened along the second direction, and the width of the second positioning hole (241) is gradually narrowed along the second direction, so that the radius of the inscribed circle of the overlapping portion of the first positioning hole (231) and the second positioning hole (241) changes as the cover plate slides along the second direction; The first direction is the length direction of the base plate (4), and the second direction is the width direction of the base plate (4).

2. The positioning fixture according to claim 1, characterized in that, The positioning frame (1) has a first slot (11) on the side facing the positioning component (2), and the positioning component (2) has a first positioning post (22) that is inserted into the first slot (11).

3. The positioning fixture according to claim 2, characterized in that, The base plate (4) is provided with a second slot (41) on the side facing the positioning frame (1), and the positioning frame (1) is provided with a second positioning post (12) that is inserted into the second slot (41).

4. The positioning fixture according to claim 3, characterized in that, The positioning frame (1) includes two positioning blocks (13) arranged opposite to each other, and a positioning area (14) for positioning the substrate (5) is formed between the two positioning blocks (13) and between two adjacent positioning frames (1).

5. The positioning fixture according to claim 1, characterized in that, The positioning plate (23) is provided with a groove (232) along the second direction on the side facing the cover plate (24), and the cover plate (24) is provided with a guide block (242) that slides along the groove (232).

6. The positioning fixture according to claim 5, characterized in that, The positioning plate (23) is provided with an adjustment hole communicating with the slide groove (232) along the second direction. An adjustment plate (233) is slidably disposed in the adjustment hole. A portion of the adjustment plate (233) is located in the slide groove (232). The positioning plate (23) is provided with a fastener (234) for fastening the adjustment plate (233).

7. The positioning fixture according to claim 1, characterized in that, Two adjacent positioning plates (23) are engaged by positioning slots (235) for positioning multiple positioning plates (23) in the first direction.

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