Dip package wave soldering jig

Abstract

The utility model relates to DIP package wave -soldering fixture technical field, and disclose a kind of DIP package wave -soldering fixture, positioning carrier plate is installed in the upper portion of support frame seat with functional module form, flexible dressing can be carried out to positioning carrier plate according to welding piece specification when working, and connecting installation is carried out to the clamping limit of overturning clamping block buckling limit by stopper plate through positioning guide column direction support cooperation, and the welding element on the upper portion of circuit substrate is supported by pressing spring, and by elastic pressing, the uneven stress problem caused by component height difference can be avoided, the support limit stability of component and positioning accuracy greatly improve, limit pressing block is connected and installed using sliding slot structure, according to the component distribution situation on the upper portion of circuit substrate, appropriate down pressure support position is selected in the edge portion by sliding adjustment, the limit installation of different specifications circuit substrate can be flexibly adapted, limit pressing block uses elastic down pressure structure, and the stable down pressure limit support of circuit substrate can be realized.

Description

Technical Field

[0001] This utility model relates to the field of DIP package wave soldering fixture technology, specifically a DIP package wave soldering fixture. Background Technology

[0002] Wave soldering refers to the process of spraying molten solder (tin alloy) into a designed solder wave using an electric or electromagnetic pump, or by injecting nitrogen gas into the solder bath. The printed circuit board (PCB) containing pre-mounted components passes through the solder wave to achieve mechanical and electrical connections between the component leads / pins and the PCB pads. It is a commonly used process in DIP (Digital In-Package) packaging. During the soldering process, specialized fixtures are used to support and position the DIP components and the substrate for precise soldering positioning.

[0003] During operation, the circuit board is positioned and installed by the carrier board structure on the upper part of the fixture. Since the component distribution on the upper part of the circuit board is fixed, a single carrier board can only be used for a specific circuit board. The carrier board and base structure of traditional fixtures are mostly integrated. When processing circuit boards of different specifications, the entire fixture needs to be replaced, which is very inconvenient. Therefore, a DIP packaged wave soldering fixture is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a DIP package wave soldering fixture to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a DIP package wave soldering fixture, comprising a carrier plate mechanism and a limiting mechanism for DIP package soldering and mounting. The carrier plate mechanism includes a support frame, a positioning carrier plate, a limiting pressure plate, a flipping block, and a positioning guide post. The positioning carrier plate is detachably mounted on the upper part of the support frame by fitting into a slot and fastening the positioning guide post. The limiting pressure plate is movably mounted on the upper part of the support frame by being guided and supported by the positioning guide post and engaging with the flipping block. A pressure spring is provided at the lower part of the limiting pressure plate.

[0006] The limiting mechanism is installed on the upper part of the positioning carrier plate. The limiting mechanism includes a limiting block, a guide slider, an adjusting screw, and a pre-tightening spring. The limiting block is supported by the adjusting screw and pushed against the pre-tightening spring to float on the upper part of the guide slider. The limiting block is supported by the guide slider and is horizontally slidably installed on the side of the positioning carrier plate.

[0007] Preferably, the support frame is provided with a carrier plate mounting groove in the middle, and the positioning carrier plate is fitted and installed inside the carrier plate mounting groove. The positioning carrier plate is provided with a plate positioning groove in the middle.

[0008] Preferably, fastening screw holes are provided at the four corners of the mounting slot of the carrier plate. The bolt part of the lower end of the positioning guide post passes through the through hole provided at the corner of the positioning carrier plate and is threadedly connected to the fastening screw hole. After installation, the lower part of the positioning guide post contacts and presses against the upper side of the positioning carrier plate.

[0009] Preferably, guide holes are provided through the four corners of the aforementioned limiting pressure plate, and the end posts of the positioning guide posts are slidably inserted into the guide holes.

[0010] Preferably, the upper two sides of the support frame are provided with a locking block mounting seat. The flipping locking block is flipped and mounted on the inner side of the rectangular groove in the middle of the locking block mounting seat by a rotating shaft. The rear of the flipping locking block is abutted and installed with a thrust spring. The front of the flipping locking block is abutted and connected with the front side of the rectangular groove. After installation, the locking head of the flipping locking block is locked and supported by the upper side of the limiting pressure plate. A linkage crossbar is fixedly installed in the middle of two adjacent sets of flipping locking blocks.

[0011] Preferably, the upper part of the limiting pressure plate is uniformly provided with threaded bolts, which are threadedly connected to the threaded through holes provided on the upper part of the limiting pressure plate, and the pressure spring is fixedly installed at the lower end of the threaded bolts.

[0012] Preferably, the edge of the positioning plate is provided with a sliding guide groove, the guide slider is slidably fitted into the inner side of the sliding guide groove, the lower part of the preload spring is threaded into the screw hole in the middle of the guide slider, the limiting pressure block is rotatably mounted on the upper part of the guide slider by the support of the preload spring, and the preload spring is pushed and mounted on the upper part of the limiting pressure block.

[0013] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects:

[0014] This fixture adopts a split-type carrier plate installation structure. The positioning carrier plate is installed on the upper part of the support frame in the form of a functional module. The positioning carrier plate is connected and installed by the slot fitting and positioning, and the lower bolt of the positioning guide post is fastened and locked. The structure is simple and easy to disassemble and assemble. During operation, the positioning carrier plate can be flexibly replaced according to the specifications of the weldment, which greatly improves the working flexibility and ease of use of the fixture.

[0015] The limiting pressure plate is connected and installed by positioning guide pillars and flip-locking blocks for fastening and limiting. The installation operation is convenient and quick. In addition, the compression spring provides pressure support for the welded components on the upper part of the circuit board. The elastic pressure can avoid the problem of uneven force caused by the height difference of the components, which greatly improves the stability and positioning accuracy of the component support and limiting.

[0016] The device employs a movable substrate mounting and limiting structure, utilizing a sliding groove structure to connect and install the limiting blocks. During operation, the device can slide and adjust the edge to select a suitable downward support position according to the component distribution on the upper part of the circuit board. This allows for flexible adaptation to the limiting installation of circuit boards of different specifications. Furthermore, the limiting blocks adopt an elastic downward pressing structure, which is simple in structure and reliable in operation, enabling stable downward pressing and limiting support for the circuit board. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall installation three-dimensional structure of this utility model;

[0019] Figure 2 A three-dimensional structural diagram of the upper side of the limiting pressure plate of this utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of the lower side of the limiting pressure plate of this utility model.

[0021] Figure 4 This is a schematic diagram of the upper structure of the positioning carrier plate and support frame of this utility model.

[0022] Figure 5 This is a schematic diagram of the working and installation structure of the limiting mechanism of this utility model;

[0023] Figure 6 This is a three-dimensional structural diagram of the limiting mechanism of this utility model.

[0024] Explanation of reference numerals in the attached drawings: 1. Support frame; 2. Positioning plate; 3. Limiting pressure plate; 4. Flipping block; 5. Positioning guide post; 6. Threaded bolt; 7. Compression spring; 8. Linkage crossbar; 9. Plate mounting groove; 10. Limiting pressure block; 11. Guide slider; 12. Adjusting screw; 13. Preload spring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce. Example

[0027] Please see Figure 1-6 This utility model provides a technical solution: a DIP package wave soldering fixture, including a carrier plate mechanism and a limiting mechanism for DIP package soldering and mounting. The carrier plate mechanism is used for mounting and positioning the circuit board and the soldering components. The carrier plate mechanism includes a support frame 1, a positioning carrier plate 2, a limiting pressure plate 3, a flipping block 4, and a positioning guide post 5. The positioning carrier plate 2 is used for positioning and mounting the circuit board. The positioning carrier plate 2 is detachably mounted on the upper part of the support frame 1 by engaging with the positioning guide post 5 through a slot. Specifically, see attached... Figure 4 As shown, to facilitate the positioning and installation of the positioning carrier plate 2, a carrier plate mounting groove 9 is provided in the middle of the support frame 1. The positioning carrier plate 2 is aligned and fitted into the inner side of the carrier plate mounting groove 9. To facilitate the positioning and installation of the circuit board, a board positioning groove is provided in the middle of the positioning carrier plate 2. To secure and limit the installation of the positioning carrier plate 2, fastening screw holes are provided at the four corners inside the carrier plate mounting groove 9. The bolt part at the lower end of the positioning guide post 5 passes through the through hole provided at the corner of the positioning carrier plate 2 and is fastened. The screw hole threaded connection allows the lower part of the positioning guide post 5 to contact and press against the upper side of the positioning carrier plate 2 after installation. The split carrier plate installation structure is adopted, and the positioning carrier plate 2 is installed on the upper part of the support frame 1 in the form of a functional module. The positioning carrier plate 2 is connected and installed by the slot fitting and positioning, and the lower bolt part of the positioning guide post 5 is fastened and locked. The structure is simple and easy to disassemble and assemble. During operation, the positioning carrier plate 2 can be flexibly replaced according to the specifications of the weldment, which greatly improves the working flexibility and ease of use of the fixture.

[0028] The limiting pressure plate 3 is used for pressure support of welding components. The limiting pressure plate 3 is guided and supported by the positioning guide post 5 and engaged with the flipping block 4 to be movable and limited on the upper part of the support frame 1. Specifically, see attached. Figure 2As shown, in order to cooperate with the positioning guide post 5 for installation, guide holes are provided through the four corners of the limiting pressure plate 3. The end post of the positioning guide post 5 is slidably inserted into the guide hole. The flip block 4 is used to lock and limit the limiting pressure plate 3 after installation. In order to support the installation of the flip block 4, a block mounting seat is provided on both sides of the upper part of the support frame 1. The flip block 4 is flipped and installed inside the rectangular groove in the middle of the block mounting seat by a rotating shaft. The rear of the flip block 4 is abutted by a thrust spring, and the front of the flip block 4 is abutted and connected to the front side of the rectangular groove. After installation, the head of the flip block 4 is locked and supported by the upper side of the limiting pressure plate 3. The limiting pressure plate 3 is connected and installed by the positioning guide post 5 to cooperate with the flip block 4 for locking and limiting. The installation operation is convenient and quick. In order to facilitate the unlocking operation of the flip block 4, a linkage crossbar 8 is fixedly installed in the middle of two adjacent sets of flip blocks 4.

[0029] To provide stable downward support for the component, a compression spring 7 is provided at the lower part of the limiting pressure plate 3, as shown in the attached figure. Figure 2 As shown, in order to support the installation of the compression spring 7, threaded bolts 6 are evenly arranged on the upper part of the limiting pressure plate 3. The compression spring 7 is fixedly installed at the lower end of the threaded bolts 6, and the threaded bolts 6 are threadedly connected to the threaded through holes provided on the upper part of the limiting pressure plate 3. The compression force of the compression spring 7 can be flexibly adjusted by turning and adjusting. The compression spring 7 provides compression support for the soldered components on the upper part of the circuit board. The elastic compression can avoid the problem of uneven force caused by the height difference of the components, and greatly improve the stability and positioning accuracy of the component support and limitation.

[0030] A limiting mechanism is installed on the upper part of the positioning carrier plate 2 to provide downward support and limit the circuit board after installation. The limiting mechanism includes a limiting block 10, a guide slider 11, an adjusting screw 12, and a preload spring 13. The limiting block 10 is horizontally slidably mounted on the side of the positioning carrier plate 2 with the support of the guide slider 11. Specifically, see attached... Figure 5 As shown, to facilitate the connection and installation of the guide slider 11, a sliding guide groove is provided on the edge of the positioning carrier plate 2. The guide slider 11 is slidably fitted into the inner side of the sliding guide groove. The limiting pressure block 10 is connected and installed using the sliding groove structure. During operation, according to the component distribution on the upper part of the circuit board, a suitable downward support position can be selected on its edge by sliding adjustment. It can flexibly adapt to the limiting installation of circuit boards of different specifications. The limiting pressure block 10 is supported by the adjusting screw 12 and cooperates with the pre-tightening spring 13 to push and float on the upper part of the guide slider 11. Specifically, as shown in the attached figure. Figure 6As shown, the lower part of the preload spring 13 is threadedly installed in the screw hole in the middle of the guide slider 11. The limiting pressure block 10 is rotatably mounted on the upper part of the guide slider 11 by the support of the preload spring 13. The preload spring 13 is pushed and mounted on the upper part of the limiting pressure block 10. The limiting pressure block 10 adopts an elastic pressing structure, which is simple in structure and reliable in operation, and can realize stable pressing and limiting support for the circuit board.

[0031] The working principle or structural principle is as follows: During operation, a positioning carrier plate 2 and a limiting pressure plate 3 of the corresponding specifications are selected according to the circuit board specifications. Then, the positioning carrier plate 2 is aligned and fitted into the carrier plate mounting groove 9 on the upper part of the support frame 1 for support. Next, four sets of positioning guide posts 5 are screwed into the inner side of the holes at the corners of the positioning carrier plate 2. The installation and locking of the positioning carrier plate 2 are completed by tightening the threads of the lower bolt part of the positioning guide post 5. Then, the circuit board loaded with components is aligned and fitted into the inner side of the positioning groove on the upper part of the positioning carrier plate 2. Then, the position of the limiting pressure block 10 is adjusted by sliding, and the component empty space on the edge of the circuit board is selected as the fulcrum. Finally, the installed circuit board is pressed down by flipping the mating end. The board is positioned for limiting support. The placement of components on the upper part of the circuit board is checked. Then, the limiting pressure plate 3 is installed on the upper part of the positioning guide post 5 using the hole insertion. After installation, the upper part of the corresponding component is supported by the pressure spring 7 to ensure stable connection between the component and the solder groove of the circuit board. Then, the limiting pressure plate 3 is slowly pressed down. The end of the limiting pressure plate 3 presses against the flip-block 4 on both sides and flips outward and is locked to the upper part of the end side of the limiting pressure plate 3. The flip-block 4 locks the limiting pressure plate 3 to complete the assembly of the fixture. After welding is completed, simply press down the supporting limiting pressure plate 3 and push outward the linkage crossbar 8 in the middle of the flip-block 4 on both sides in sequence to remove the circuit board and the limiting pressure plate 3.

[0032] In summary, this fixture adopts a split-type carrier plate installation structure. The positioning carrier plate 2 is installed on the upper part of the support frame 1 in the form of a functional module. The positioning carrier plate 2 is connected and installed by the slot fitting and positioning, and the lower bolt of the positioning guide post 5 is fastened and locked. The structure is simple and easy to disassemble and assemble. During operation, the positioning carrier plate 2 can be flexibly replaced according to the specifications of the weldment, which greatly improves the working flexibility and ease of use of the fixture. The limiting pressure plate 3 is connected and installed by the positioning guide post 5 and the flipping block 4 for fastening and limiting. The installation operation is convenient and quick. In addition, the welding of the upper part of the circuit board is supported by the pressure spring 7. The components are supported by pressure, and the elastic pressure avoids the problem of uneven force caused by the difference in component height, which greatly improves the stability and positioning accuracy of the component support limit. A movable substrate mounting limit structure is adopted, and the limit block 10 is connected and installed by a sliding groove structure. During operation, the appropriate downward support position can be selected by sliding and adjusting the edge according to the component distribution on the upper part of the circuit board. It can flexibly adapt to the limit installation of circuit boards of different specifications. Moreover, the limit block 10 adopts an elastic downward pressure structure, which is simple in structure and reliable in operation, and can achieve stable downward pressure limit support for the circuit board.

[0033] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this utility model. In particular, the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways without departing from the spirit and teachings of this utility model. All such combinations and / or combinations fall within the scope of this utility model.

Claims

1. A wave soldering fixture for DIP packages, comprising a carrier board mechanism and a limiting mechanism for DIP package soldering and mounting, characterized in that: The carrier plate mechanism includes a support frame (1), a positioning carrier plate (2), a limiting pressure plate (3), a flipping block (4), and a positioning guide post (5). The positioning carrier plate (2) is detachably installed on the upper part of the support frame (1) by fitting the positioning guide post (5) with a slot for fastening and limiting. The limiting pressure plate (3) is movably installed on the upper part of the support frame (1) by guiding the positioning guide post (5) and engaging with the flipping block (4) for limiting. A pressure spring (7) is provided at the lower part of the limiting pressure plate (3). The limiting mechanism is installed on the upper part of the positioning carrier plate (2). The limiting mechanism includes a limiting pressure block (10), a guide slider (11), an adjusting screw (12), and a pre-tightening spring (13). The limiting pressure block (10) is supported by the adjusting screw (12) and cooperates with the pre-tightening spring (13) to push and float on the upper part of the guide slider (11). The limiting pressure block (10) is supported by the guide slider (11) and is horizontally slidably installed on the side of the positioning carrier plate (2).

2. The DIP package wave soldering fixture according to claim 1, characterized in that: The support frame (1) is provided with a plate mounting groove (9) in the middle. The positioning plate (2) is fitted and installed inside the plate mounting groove (9). The positioning plate (2) is provided with a plate positioning groove in the middle.

3. A DIP package wave soldering fixture according to claim 2, characterized in that: The mounting groove (9) of the carrier plate is provided with fastening screw holes at the four corners. The bolt part of the lower end of the positioning guide post (5) passes through the through hole provided at the corner of the positioning carrier plate (2) and is threadedly connected to the fastening screw hole. After installation, the lower part of the positioning guide post (5) contacts and presses against the upper side of the positioning carrier plate (2).

4. A DIP package wave soldering fixture according to claim 3, characterized in that: The four corners of the limiting pressure plate (3) are provided with guide holes, and the end post of the positioning guide post (5) is slidably inserted into the guide holes.

5. A DIP package wave soldering fixture according to claim 4, characterized in that: Both sides of the upper part of the support frame (1) are provided with a card block mounting seat. The flipping card block (4) is flipped and installed on the inner side of the rectangular groove in the middle of the card block mounting seat by a rotating shaft. The rear part of the flipping card block (4) is abutted and installed with a thrust spring. The front part of the flipping card block (4) is abutted and connected to the front side of the rectangular groove. After installation, the card head of the flipping card block (4) is engaged and supported by the upper side of the limiting pressure plate (3). The middle of the two adjacent sets of flipping card blocks (4) is fixedly installed with a linkage crossbar (8).

6. A DIP package wave soldering fixture according to claim 5, characterized in that: The upper part of the limiting pressure plate (3) is uniformly provided with threaded bolts (6), the threaded bolts (6) are threadedly connected to the threaded through holes provided on the upper part of the limiting pressure plate (3), and the pressure spring (7) is fixedly installed at the lower end of the threaded bolts (6).

7. A DIP package wave soldering fixture according to claim 1, characterized in that: The positioning plate (2) has a sliding guide groove on its side. The guide slider (11) is slidably fitted into the inner side of the sliding guide groove. The lower part of the preload spring (13) is threaded into the screw hole in the middle of the guide slider (11). The limiting block (10) is rotatably mounted on the upper part of the guide slider (11) by the support of the preload spring (13). The preload spring (13) is pushed and mounted on the upper part of the limiting block (10).

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