Fixture for reducing pseudo soldering risk of SMT (Surface Mount Technology) module

Abstract

The utility model relates to a fixture for reducing the risk of pseudo soldering of SMT module, which comprises a base, a cover plate and a plurality of split pressing blocks, the cover plate is detachably connected with the base, the plurality of split pressing blocks are movably installed on the cover plate, each pressing block is of a barbell-like structure with two thick ends and a thin middle, a thin rod in the middle penetrates through a through hole of the cover plate, and the cover plate is detachably connected with the base. The pressing block can freely move in the vertical direction; the pressing blocks vertically act on the surface of the module through self weight, the distribution positions of the pressing blocks correspond to the module welding area, and multi-point uniform pressing is achieved. According to the clamp for reducing the cold solder joint risk of the SMT module, the split type pressing block design is adopted, a unique dead-weight-free pressure applying mode is adopted, the structure of the clamp is simplified, fault hidden dangers are reduced, energy consumption and equipment operation cost are reduced, pressure can be accurately controlled, uneven pressure applying is avoided, welding quality is guaranteed, and the cold solder joint risk is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to SMT (surface mount technology) module production auxiliary equipment technical field in the electronic manufacturing field, specifically, especially, a kind of clamp for reducing SMT module false soldering risk. BACKGROUND

[0002] In the production and manufacturing field of SMT (Surface Mount Technology) module, in terms of the existing technology currently mastered, there are a series of more prominent and urgent problems, which greatly limit the improvement of product quality and the improvement of production efficiency in this field, and the specific manifestations are as follows:

[0003] In the SMT module production process, false soldering phenomenon frequently occurs, which has become a key factor affecting product quality. False soldering causes unstable circuit connection, which easily causes intermittent failure of electronic products, and even complete failure. This not only greatly reduces the product yield, causes waste of raw materials, manpower and time cost, but also seriously weakens product reliability, damages enterprise brand image and market competitiveness, and hinders the healthy development of industry. The clamp used for SMT module fixing and pressure in the actual application, the pressure distribution is uneven, and part of the soldering points cannot be well soldered due to insufficient pressure. In addition, the existing clamp is difficult to accurately adjust the pressure for different soldering point position distribution modules, lacks flexibility and pertinence, and cannot effectively solve the false soldering problem, which becomes the key bottleneck restricting the improvement of production process. UTILITY MODEL CONTENT

[0004] Therefore, the utility model provides a kind of clamp for reducing SMT module false soldering risk, adopts split type pressure block design, and adopts unique self-weight pressure mode, simplifies clamp structure, reduces hidden danger, reduces energy consumption and equipment operating cost, can also accurately control pressure, avoid uneven pressure, guarantee welding quality, effectively reduce false soldering risk.

[0005] The purpose of the utility model is realized by the following technical solutions:

[0006] A clamp for reducing SMT module false soldering risk, comprising a base, a cover plate and a plurality of split type pressure blocks, the cover plate is detachably connected with the base, and the plurality of split type pressure blocks are movably installed on the cover plate, the pressure block is a barbell structure with thick ends and a thin middle, the thin middle rod passes through the through hole of the cover plate, so that the pressure block can move freely in the vertical direction;The pressure block acts on the module surface by gravity, and its distribution position corresponds to the welding area of the module, to realize multi-point uniform pressure.

[0007] Unlike the traditional integrated fixture structure, the fixture adopts a split press block design. This design makes the fixture more flexible to adapt to SMT modules of different specifications and layouts. The split design facilitates individual replacement of a damaged press block without the need to replace the entire fixture, further improving the efficiency and economy of the fixture. Abandoning the traditional method of relying on external power sources (such as air cylinders, motors, etc.) for pressure, the scheme adopts a unique self-weight pressure application method. This innovative approach not only simplifies the structure of the fixture, reduces the potential for faults caused by complex power systems, but also reduces energy consumption and equipment operating costs. In addition, the self-weight pressure application method can more accurately control the pressure size, avoiding the problem of uneven pressure caused by pressure fluctuations of external power sources, thereby better ensuring the welding quality of SMT modules and effectively reducing the risk of false welding.

[0008] Preferably, the middle rod of the press block is in clearance fit with the through hole of the cover plate, so that the vertical movement of the press block is only adjusted by the warping degree of the module and the self-weight.

[0009] From the perspective of precise pressure application, it can allow the press block to automatically and accurately adjust the vertical position under the action of self-weight according to the actual warping condition of the module surface. Since it is only adjusted by the warping degree of the module and the self-weight, it avoids the influence of other external interference factors on the pressure application of the press block, thereby ensuring that the press block can always vertically act on the module surface with the most appropriate pressure, effectively improving the accuracy and stability of pressure application, and further reducing the risk of false welding caused by uneven pressure. From the perspective of structural simplicity and reliability, the clearance fit method does not require additional complex mechanical transmission or control devices to adjust the vertical movement of the press block, simplifying the overall structure of the fixture, reducing the number of parts, reducing the probability of failure, improving the reliability and durability of the fixture, and also reducing the manufacturing cost and maintenance difficulty.

[0010] Preferably, the base is provided with positioning pins and positioning holes, and further comprises a detachable bottom plate installed on the base for supporting the module to be welded.

[0011] The cooperation of the positioning pins and the positioning holes can ensure that the bottom plate has very high positioning accuracy when installed on the base, so that the position of the bottom plate after each installation can remain consistent, thereby ensuring the positional accuracy and repeatability of the module to be welded placed on the bottom plate in the fixture. This plays a key role in accurately controlling the welding position and ensuring the stability of the welding quality. The detachable design of the bottom plate facilitates regular cleaning, maintenance or replacement of the bottom plate. When the bottom plate is worn or damaged due to long-term use, the entire fixture does not need to be replaced, only the bottom plate needs to be replaced, reducing maintenance costs and prolonging the overall service life of the fixture. At the same time, the bottom plate serves as a component for supporting the module to be welded, providing a stable support platform for the module, which helps to improve the stability during the welding process.

[0012] Preferably, the bottom plate is provided with through holes corresponding to the positioning holes, and the positioning and installation of the base and the bottom plate are achieved by passing the positioning pins through the through holes.

[0013] The bottom plate is provided with through holes corresponding to the positioning holes of the base, and the positioning and installation are completed by passing the positioning pins through the through holes. This design ensures that the connection between the base and the bottom plate is tight and the positioning is accurate. The way of passing the positioning pins through the through holes can effectively limit the displacement of the bottom plate in the horizontal and vertical directions, ensuring the relative position accuracy between the two. In actual production process, accurate positioning and installation can make the clamp always in the predetermined position during the pressing and welding operation of the module to be welded, avoiding the position deviation of the module caused by inaccurate connection between the bottom plate and the base, thereby ensuring the accuracy and consistency of the welding position, improving the welding quality, reducing the problems of virtual welding and missed welding caused by position deviation, and improving the yield of products.

[0014] Preferably, it further comprises a magnetic steel sheet arranged on the bottom plate and magnetically connected with the bottom plate.

[0015] The magnetic connection method has obvious advantages in installation convenience. Unlike traditional mechanical connection methods, magnetic connection does not require complex installation tools and cumbersome operation processes. During assembly, workers only need to place the magnetic steel sheet close to the bottom plate, and rely on the action of magnetic force to quickly and accurately complete positioning and connection, greatly shortening the assembly time and improving production efficiency. This fast and accurate connection method is especially suitable for large-scale industrial production scenes, which can effectively reduce production costs and improve the market competitiveness of enterprises.

[0016] Preferably, the surface of the magnetic steel sheet is provided with anti-skid lines, and the bottom plate is detachably fixed by magnetic adsorption.

[0017] The module includes electronic components and circuit boards, and the pressing block ensures the correct position of the electronic components. The anti-skid lines can increase the friction between the steel sheet and the circuit board, prevent the circuit board from sliding due to slight vibration or shaking during welding, and ensure that the circuit board is always in the accurate welding position, improving the accuracy and stability of welding.

[0018] Preferably, the base, the bottom plate and the cover plate are fixed by positioning pins.

[0019] From the perspective of mechanical connection stability, the positioning pin can accurately determine the relative positions among the base, the bottom plate and the cover plate, ensure that they can still maintain accurate matching relationship under complex working environment and various external forces, and greatly improve the stability of the overall structure. Compared with other connection methods, the installation process of the positioning pin is more simple and efficient, which can effectively shorten the production and assembly cycle and reduce the labor cost. Meanwhile, the fixing method of the positioning pin has good repeatability, which means that each product can guarantee the same high-quality connection effect in the batch production process of the product, and is beneficial to improve the consistency and yield of the product.

[0020] The utility model discloses compared with prior art's beneficial effect is:

[0021] The utility model discloses a fixture for reducing the risk of SMT module false welding, unlike the traditional integrated fixture structure, the fixture adopts split type pressure block design. This design makes the fixture more flexible to adapt to different specifications and layouts of SMT module. The split type design facilitates individual replacement when a certain pressure block is damaged, without replacing the whole fixture, further improving the use efficiency and economy of the fixture. Discard the traditional way of relying on external power source (such as air cylinder, motor, etc.) to press, the scheme adopts the unique self-weight pressure mode. This innovative way not only simplifies the structure of the fixture, reduces the fault hidden danger caused by the complex power system, but also reduces energy consumption and equipment operation cost. In addition, the self-weight pressure mode can more accurately control the pressure size, avoiding the problem of uneven pressure caused by external power source pressure fluctuation, so as to better ensure the welding quality of SMT module and effectively reduce the risk of false welding. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0023] Figure 1 The structure diagram of the fixture for reducing the risk of SMT module false welding according to an embodiment of the utility model.

[0024] Figure 2 The structure diagram of the fixture for reducing the risk of SMT module false welding according to another embodiment of the utility model.

[0025] Figure 3 For Figure 2 The enlarged view of area A.

[0026] Brief Description of Drawings

[0027] Base (1).

[0028] Cover plate (2).

[0029] Pressing block (3).

[0030] Middle thin rod of pressing block (3a).

[0031] Through hole (4) (for the thin rod of the pressing block to pass through on the cover plate).

[0032] Positioning pin (5) (provided on the base).

[0033] Positioning hole (6) (provided on the base).

[0034] Bottom plate (7) (detachably mounted on the base).

[0035] Through hole (8) (provided on the bottom plate corresponding to the positioning hole).

[0036] Magnetic steel sheet (9) (provided on the bottom plate to fix the circuit substrate). DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0039] It should be noted that similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings. In the description of the embodiments of the present application, it should be understood that the terms "upper", "lower", "left", "right", "vertical", "horizontal", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly understood by those skilled in the art, and are only for the convenience of describing the present application and simplifying the description, and therefore, cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, cannot be understood as limiting the present application.

[0040] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0041] The technical solutions in the present application will be described below with reference to the drawings.

[0042] The present embodiment provides a clamp for reducing the risk of SMT module false welding, comprising a base 1, a cover plate 2 and a plurality of split pressing blocks 3, the cover plate 2 is detachably connected with the base 1, and the plurality of split pressing blocks 3 are movably installed on the cover plate 2, the pressing block 3 is a barbell structure with thick ends and a thin middle, the thin middle rod 3a passes through the through hole 4 of the cover plate 2, so that the pressing block 3 can move freely in the vertical direction; the pressing block 3 acts vertically on the module surface by its own weight, and its distribution position corresponds to the welding area of the module, achieving uniform pressure at multiple points.

[0043] Unlike the traditional integrated clamp structure, the present clamp adopts a split pressing block 3 design. This design makes the clamp more flexible in adapting to SMT modules of different specifications and layouts. For modules with different solder joint distributions, the position and number of each pressing block 3 can be adjusted individually according to actual needs, without the need to customize a completely new clamp for each different module as in traditional clamps, greatly improving the versatility and applicability of the clamp and reducing production costs. At the same time, the split design also facilitates individual replacement of a damaged pressing block 3 without the need to replace the entire clamp, further improving the efficiency and economy of the clamp. Abandoning the traditional method of relying on external power sources (such as air cylinders and motors) for pressure application, the present scheme adopts a unique self-weight-free pressure application method. This innovative method not only simplifies the structure of the clamp and reduces the potential faults caused by complex power systems, but also reduces energy consumption and equipment operating costs. In addition, the self-weight-free pressure application method can more accurately control the pressure size, avoiding the problem of uneven pressure application caused by pressure fluctuations of external power sources, thereby better ensuring the welding quality of SMT modules and effectively reducing the risk of false welding.

[0044] In this embodiment, the middle thin rod 3a of the pressing block 3 is in clearance fit with the through hole 4 of the cover plate 2, so that the vertical movement of the pressing block 3 is only adjusted by the degree of warping of the mold set and the self weight.

[0045] From the perspective of precise pressure application, it can make the pressing block 3 automatically and accurately adjust the vertical position under the action of the self weight according to the actual warping condition of the mold set surface. Since it is only adjusted by the degree of warping of the mold set and the self weight, the influence of other external interference factors on the pressing of the pressing block 3 is avoided, so that the pressing block 3 can always act on the mold set surface with the most appropriate pressure, effectively improving the accuracy and stability of the pressure application, further reducing the risk of false welding caused by uneven pressure. From the perspective of structural simplicity and reliability, the clearance fit method does not need additional complex mechanical transmission or control device to adjust the vertical movement of the pressing block 3, simplifies the overall structure of the clamp, reduces the number of parts, reduces the probability of failure, improves the reliability and durability of the clamp, and also reduces the manufacturing cost and maintenance difficulty.

[0046] In this embodiment, the base 1 is provided with positioning pins 5 and positioning holes 6, and further comprises a bottom plate 7 detachably mounted on the base 1 for supporting the mold set to be welded.

[0047] The cooperation of the positioning pins 5 and the positioning holes 6 can ensure that the bottom plate 7 has very high positioning accuracy when installed on the base 1, so that the position of the bottom plate 7 after each installation can be kept consistent, thereby ensuring the position accuracy and repeatability of the mold set to be welded placed on the bottom plate 7 in the clamp. This plays a key role in accurately controlling the welding position and ensuring the stability of the welding quality. The detachable design of the bottom plate 7 facilitates regular cleaning, maintenance or replacement of the bottom plate 7. When the bottom plate 7 is worn or damaged due to long-term use, the entire clamp does not need to be replaced, only the bottom plate 7 needs to be replaced, which reduces the maintenance cost and prolongs the overall service life of the clamp. At the same time, the bottom plate 7 provides a stable support platform for the mold set to be welded, which helps to improve the stability during the welding process.

[0048] In this embodiment, the bottom plate 7 is provided with a through hole 8 corresponding to the positioning hole 6, and the positioning installation of the base 1 and the bottom plate 7 is realized by the positioning pin 5 passing through the through hole 8.

[0049] The bottom plate 7 is provided with through holes 8 corresponding to the positioning holes 6 of the base 1, and the positioning installation is completed by passing through the through holes with the positioning pins 5. This design ensures that the connection between the base 1 and the bottom plate 7 is tight and the positioning is accurate. The way that the positioning pins 5 pass through the through holes can effectively limit the displacement of the bottom plate 7 in the horizontal and vertical directions, ensuring the relative position accuracy between the two. In actual production process, accurate positioning installation can make the clamp always in the predetermined position when the to-be-welded module is pressed and welded, avoiding the position deviation of the module caused by the inaccurate connection between the bottom plate 7 and the base 1, thereby ensuring the accuracy and consistency of the welding position, improving the welding quality, reducing the problems such as virtual welding and missed welding caused by position deviation, and improving the yield of products.

[0050] In the embodiment, a magnetic steel sheet 9 is further included, which is arranged on the bottom plate 7 and is magnetically connected with the bottom plate 7.

[0051] The magnetic connection method has significant advantages in installation convenience. The magnetic connection is different from the traditional mechanical connection method, and does not require complex installation tools and cumbersome operation process. In the assembly process, the worker only needs to approach the magnetic steel sheet to the bottom plate, and rely on the magnetic force to quickly and accurately complete the positioning and connection, greatly shortening the assembly time and improving the production efficiency. This fast and accurate connection method is especially suitable for large-scale industrial production scenes, which can effectively reduce the production cost and improve the market competitiveness of enterprises.

[0052] In the embodiment, the magnetic steel sheet 9 is provided with anti-skid lines on the surface, and is detachably fixed with the bottom plate 7 through magnetic adsorption.

[0053] The module includes electronic components and circuit boards, and the pressing block ensures the correct position of the electronic components, and the anti-skid lines can increase the friction between the steel sheet and the circuit board, prevent the circuit board from sliding due to slight vibration or shaking during welding, and ensure that the circuit board is always in the accurate welding position, improving the accuracy and stability of welding.

[0054] In the embodiment, the base 1, the bottom plate 7 and the cover plate 2 are fixed through the positioning pins 5.

[0055] From the mechanical connection stability point of view, the positioning pin can accurately determine the relative position among the base, the bottom plate and the cover plate, ensure that they can still maintain the accurate matching relationship under the complex working environment and various external forces, greatly improve the stability of the overall structure. Compared with other connection methods, the installation process of the positioning pin is more simple and efficient, which can effectively shorten the production assembly cycle and reduce the labor cost. At the same time, the fixing mode of the positioning pin has good repeatability, which means that each product can guarantee the same high-quality connection effect in the batch production process of the product, which is beneficial to improve the consistency and yield of the product.

[0056] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A fixture for reducing the risk of SMT module false soldering, characterized in that, The utility model relates to a welding device for die mould, which comprises a base, a cover plate detachably connected with the base, a plurality of split pressing blocks movably mounted on the cover plate, the pressing blocks being in the shape of a barbell with thick ends and a thin middle part, the thin middle part of the pressing blocks passing through through holes of the cover plate so that the pressing blocks can move freely in the vertical direction, the pressing blocks being vertically applied to the surface of a die mould through self weight, and the distribution positions of the pressing blocks corresponding to the welding area of the die mould so as to realize uniform pressure on multiple points. The thin middle part of the pressing blocks is in clearance fit with the through holes of the cover plate, so that the vertical movement of the pressing blocks is only adjusted by the degree of warping of the die mould and self weight. The base is provided with positioning pins and positioning holes, and further comprises a bottom plate detachably mounted on the base for supporting a die mould to be welded. The bottom plate is provided with through holes corresponding to the positioning holes, and the positioning pins pass through the through holes to realize positioning and mounting of the base and the bottom plate. The utility model further comprises magnetic steel plates arranged on the bottom plate and magnetically connected with the bottom plate.

2. The fixture for reducing the risk of SMT module false soldering according to claim 1, wherein, The surface of the magnetic steel plates is provided with anti-skid lines, and the magnetic steel plates are detachably fixed with the bottom plate through magnetic adsorption.

3. The fixture for reducing the risk of SMT module false soldering according to claim 1, wherein, The base, the bottom plate and the cover plate are fixed through the positioning pins.

4. The fixture for reducing the risk of SMT module false soldering according to claim 3, characterized in that, ​ 5. The fixture for reducing the risk of SMT module false soldering according to claim 3, characterized in that, ​ 6. The fixture for reducing the risk of SMT module false soldering according to claim 5, characterized in that, ​ 7. The fixture for reducing the risk of SMT module false soldering according to claim 3, characterized in that, ​

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