Sled support welding clamp for preventing cold welding phenomenon
By designing a sled bracket welding fixture with a locking mechanism, the problem of false soldering of sled brackets in PCB processing was solved, and the stability and quality of welding were improved.
Patent Information
- Application Number
- CN202423009650.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-12-06
AI Technical Summary
In the existing technology, sled brackets are prone to cold solder joints during PCB manufacturing, especially when the gap between the positioning post and the positioning hole is too small or not fully inserted, resulting in poor soldering.
Design a sled bracket welding fixture with a locking mechanism, including a pressure assembly and a locking mechanism, to ensure that the sled bracket is smoothly mounted on the PCB. The fixture maintains stable pressure during the welding process through the cooperation of the pressure block and the pressure rod, preventing the occurrence of false solder joints.
It effectively prevents false welding, improves welding quality, and the press assembly has a simple structure that is easy to assemble and maintain, reducing replacement costs and extending service life.
Smart Images
Figure CN223557635U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of PCB welding technology, and in particular to a sled bracket welding fixture for preventing false soldering. Background Technology
[0002] In the existing technology, the sled bracket is a functional bracket in the PCB manufacturing process. After the sled bracket is attached to the PCB, it is crimped with copper blocks in the reflow oven. However, sometimes the gap between the sled bracket positioning post and the positioning hole is too small. After the PCB is attached, the positioning post cannot be fully inserted, which leads to the problem of poor cold solder joints near the positioning post after reflow soldering. Also, because some positioning posts are not fully inserted into the positioning hole, the solder pins cannot make contact with the PCB pads, and a reliable solder joint cannot be formed.
[0003] In view of this, this technical solution proposes a sled bracket welding fixture for preventing false welding. It is a fixture structure specially customized for this purpose. After the patch is applied, it is pressed onto the sled bracket to ensure stable application. It also has a locking mechanism to maintain stable pressing during reflow and improve the overall processing quality. Utility Model Content
[0004] The present invention aims to at least partially solve one of the technical problems in the related art. Therefore, the main objective of this invention is to provide a sled bracket welding fixture for preventing false soldering, thereby solving the problem of false soldering caused by poor crimping of sled brackets during PCB processing in the prior art.
[0005] To achieve the above objectives, this utility model provides a sled bracket welding fixture for preventing false welding, including a pressure assembly.
[0006] The clamping assembly includes a fixing plate and a fixing hole on the fixing plate. A fixing head is fixed in the fixing hole. The bottom of the fixing head is connected to a pressure rod. The bottom of the pressure rod is provided with a pressure block for pressing the welded position of the sled frame body. The bottom of the fixing plate is supported by a support rod.
[0007] The fixing plate is provided with locking mechanisms on both sides for securing after pressing and for opening and closing.
[0008] As a further embodiment of this utility model, the locking mechanism includes a fixing seat disposed on both sides of the fixing plate, the fixing seat is provided with a slot, a latch is provided on one side of the slot to achieve rotational locking, and a latch is provided at the bottom of the latch for fixing.
[0009] As a further embodiment of this utility model, the two sides of the fixing base are fixed to the fixing plate by fixing members.
[0010] As a further improvement of this utility model, the fixing plate is provided with a window that separates each row of fixing holes and facilitates observation of the pressing situation below.
[0011] As a further embodiment of this utility model, a spring is sleeved on the outside of the pressure rod, and the two ends of the spring are respectively connected to the pressure block and the fixing head.
[0012] As a further embodiment of this invention, the support rod is positioned diagonally opposite the fixed plate.
[0013] As a further embodiment of this utility model, the number of fixing holes and corresponding pressure rods and pressure blocks provided on the fixing plate is at least 20 sets.
[0014] The beneficial effects of this utility model are as follows:
[0015] This invention proposes a sled bracket welding fixture for preventing cold solder joints. Through a pressure assembly with a locking mechanism, it clamps the sled bracket and PCB, ensuring stable placement and bonding during reflow, thus improving overall welding quality. Furthermore, the pressure assembly has a simple overall structure, is easy to manufacture, assemble, and disassemble, has low component replacement costs, and a long service life. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the technical solutions of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the structure of each component of the press assembly in this utility model.
[0018] Figure 2 This is a schematic diagram of the latch after it is opened in this utility model.
[0019] Figure 3 This is a partial schematic diagram of the buckle at the bottom of the lock in this utility model.
[0020] Figure 4 This utility model Figure 1 A magnified view of a portion of point A in the middle.
[0021] Figure 5 This is a schematic diagram of the arrangement of the fixing holes on the fixing plate in this utility model.
[0022] [Explanation of Markings on Main Components / Assemblies]
[0023] label name label name 1 Press assembly 113 Fasteners 10 Fixed plate 114 Buckle 100 Fixing hole 12 Compression bar 101 Windows 120 Press block 11 Locking mechanism 121 Fixed head 110 Fixed base 13 support rod 111 Card slot 2 Sled frame body 112 Lock Detailed Implementation
[0024] as follows:
[0025] Please see the appendix Figure 1-5 ,
[0026] The main structure includes a press assembly 1, which includes a fixed plate 10 and a fixing hole 100 on the fixed plate 10. A fixing head 121 is fixed in the fixing hole 100. The bottom of the fixing head 121 is connected to the pressure rod 12. The bottom of the pressure rod 12 is provided with a pressure block 120 for pressing the welding position of the sled frame body 2. The bottom of the fixed plate 10 is supported by a support rod 13. The fixed plate 10 is provided with a locking mechanism 11 on both sides for stabilizing after pressing and can be opened and closed.
[0027] The working principle is as follows:
[0028] In use, first place the entire pressing assembly 1 on the sled bracket body 2 to be pressed, ensuring that each pressing block 120 is aligned with the position to be pressed (reflow welding position). Then, rotate and tighten the opened locking mechanism 11 (one end of the locking mechanism 11 is connected to an external fixed object, such as a tray, machine base, etc.). At this time, pressure flows from the fixing head 121 to the pressing rod 12, and finally the pressing blocks 120 press the positions to be pressed on the sled bracket body 2. Finally, reflow welding is performed. During reflow welding, due to the cooperation of the various components of the pressing assembly, the patch is pressed onto the sled bracket for reflow welding, improving the previous unsatisfactory conditions and achieving stable welding.
[0029] As a further embodiment of this utility model, the locking mechanism 11 includes a fixing seat 110 disposed on both sides of the fixing plate 10. The fixing seat 110 is provided with a slot 111, and a latch 112 is provided on one side of the slot 111 to cooperate with it to achieve rotational locking. The bottom of the latch 112 is provided with a latch 114 for fixing.
[0030] The locking mechanism 11 uses a slot 111 and a latch 112 for engagement. The latch 112 is a rotating latch structure with an internal spring, with one end fixed to the outside (desktop, tray, or machine, etc.) and the other end engaging with the slot 111 to achieve engagement. When the latch 112 is engaged in the slot 111, the pressure block 120 presses down on the position to be pressed.
[0031] In a preferred embodiment of this utility model, the fixing base 110 is fixed to the fixing plate 10 on both sides by fixing members 113.
[0032] The mounting base 110 is assembled onto the mounting plate 10 by screws or other fasteners 113 and is detachable.
[0033] In a preferred embodiment of this utility model, the fixing plate 10 is provided with a viewing window 101 that separates each row of fixing holes 100 and facilitates observation of the pressing situation below.
[0034] The set window 101 facilitates intuitive inspection of the welding process during crimp welding.
[0035] In a preferred embodiment of this utility model, a spring is sleeved on the outside of the pressure rod 12, and the two ends of the spring are respectively connected to the pressure block 120 and the fixing head 121.
[0036] The springs are designed to ensure even force distribution at each pressing point, avoid overpressure caused by rigid contact, and adapt to different heights.
[0037] In a preferred embodiment of this utility model, the support rod 13 is positioned diagonally opposite the fixing plate 10.
[0038] The support rod 13 is used to assemble the entire crimping assembly. The support rods 13, which are set diagonally, can prevent the crimping assembly from "lifting" due to the large number of support components.
[0039] In a preferred embodiment of this utility model, the number of fixing holes 100 and corresponding pressure rods 12 and pressure blocks 120 provided on the fixing plate 10 is at least 20 sets.
[0040] The fixing hole 100 and the corresponding pressure rod 12 and pressure block 120 correspond to the position to be crimped. This solution preferably has at least 20 sets, which can perform crimping of at least 20 pieces at a time.
[0041] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made based on the present utility model's technical concept and the contents of the present utility model's technical solution specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A sled bracket welding fixture for preventing false welding, characterized in that, include Press assembly, The clamping assembly includes a fixing plate and a fixing hole on the fixing plate. A fixing head is fixed in the fixing hole. The bottom of the fixing head is connected to a pressure rod. The bottom of the pressure rod is provided with a pressure block for pressing the welded position of the sled frame body. The bottom of the fixing plate is supported by a support rod. The fixing plate is provided with locking mechanisms on both sides for securing after pressing and for opening and closing.
2. The sled bracket welding fixture for preventing false welding according to claim 1, characterized in that, The locking mechanism includes fixed seats disposed on both sides of the fixed plate. The fixed seats are provided with slots, and a latch is provided on one side of the slot to achieve rotational locking. The bottom of the latch is provided with a latch for fixing.
3. The sled bracket welding fixture for preventing false welding according to claim 2, characterized in that, The fixing base is fixed to the fixing plate on both sides by fasteners.
4. The sled bracket welding fixture for preventing false welding according to claim 1, characterized in that, The fixing plate has a viewing window that separates each row of fixing holes and facilitates observation of the pressing situation below.
5. The sled bracket welding fixture for preventing false welding according to claim 1, characterized in that, A spring is sleeved on the outside of the pressure rod, and the two ends of the spring are respectively connected to the pressure block and the fixing head.
6. The sled bracket welding fixture for preventing false welding according to claim 1, characterized in that, The support rod is positioned diagonally opposite the fixed plate.
7. The sled bracket welding fixture for preventing false welding according to claim 1, characterized in that, The number of fixing holes and corresponding pressure rods and pressure blocks provided on the fixing plate is at least 20 sets.