Hardware with automatic drop after passing through the furnace
By setting a heat-sensitive weakening component on the hardware and connecting it to the handle, the heat-sensitive weakening component automatically breaks at high temperatures, solving the problem of low efficiency in manually removing V-shaped cuts in hardware and achieving efficient and damage-free automated production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 酷赛通信科技股份有限公司
- Filing Date
- 2025-07-04
- Publication Date
- 2026-06-19
Smart Images
Figure CN224385863U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of surface mount technology for electronic components, and in particular to a hardware component that automatically drops its handle after reflow. Background Technology
[0002] In the SMT (Surface Mount Technology) production process, metal parts are typically packaged using carrier tape and automatically placed using a pick-and-place machine. In traditional metal carrier tape designs, the carrier tape body 1 is connected to the metal part 3 via a short V-shaped cut 2, such as... Figure 1 As shown. The V-shaped cut is made of the same material as the carrier tape body and is usually integrally formed with it. After passing through the reflow oven, the V-shaped cut is completely removed manually or mechanically to remove the carrier tape body.
[0003] Because the tip of the V-shaped cut also has a certain thickness, manual breaking or mechanical cutting leaves a beveled surface or burrs on the V-shaped cut, resulting in incomplete removal and requiring further manual trimming. Applying excessive force may also damage the hardware. This results in low automation, low work efficiency, and potential impacts on product quality. Furthermore, some machines are significantly affected by the shape of the hardware during cutting; for example, other parts of the hardware may obstruct part of the V-shaped cut (e.g.,...). Figure 1 As shown in the figure, it is inconvenient to cut, and corresponding mounting grooves need to be designed for hardware with different structures to expose the complete V-shaped cut and protect other parts of the hardware. Such compatibility is poor, and the design of mounting grooves increases the cost.
[0004] Therefore, the existing technology still needs to be improved and enhanced. Utility Model Content
[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a hardware part that automatically drops its handle after being remelted, so as to solve the problems of low efficiency and easy damage to the hardware parts caused by the manual removal of the V-shaped cut of the existing hardware parts.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A hardware component that automatically detaches after being reheated in a furnace includes a hardware body, a heat-sensitive weakening component, and a handle. The hardware body is connected to the handle via the heat-sensitive weakening component. After being heated in the furnace, the mechanical strength of the heat-sensitive weakening component decreases to a preset value, causing the heat-sensitive weakening component to break automatically and the handle to detach automatically.
[0008] In the aforementioned hardware component that automatically drops its handle after reflow, the heat-sensitive weakening component is a cuboid component with an arc-shaped groove.
[0009] In the aforementioned hardware component that automatically drops its handle after reflow, the depth of the arc-shaped groove is 70-90% of the thickness of the cuboid component.
[0010] In the aforementioned hardware component that automatically drops its handle after reflow, the length of the handle is three times the length of the main body of the hardware component.
[0011] In the aforementioned hardware component that automatically drops its handle after reflow, a stress groove is provided on the horizontal surface opposite to the bottom of the arc-shaped groove.
[0012] In the aforementioned hardware component that automatically drops its handle after reflow, the stress groove is a V-shaped groove, square groove, or arc groove with a depth of 1 mm.
[0013] Compared to existing technologies, the hardware component with automatic handle detachment after reflow provided by this utility model includes a hardware body, a heat-sensitive weakening component, and a handle. The hardware body is connected to the handle via the heat-sensitive weakening component. After being heated in the reflow oven, the mechanical strength of the heat-sensitive weakening component decreases to a preset value, causing it to automatically break and the handle to detach automatically. This eliminates the need for manual or mechanical operation, improving removal efficiency and simplifying the production process. Furthermore, the automatic breakage of the heat-sensitive weakening component makes it suitable for mounting various shapes of hardware components in SMT (Surface Mount Technology) production, improving hardware compatibility and preventing damage to the hardware. Attached Figure Description
[0014] Figure 1 This is a structural schematic diagram of an existing hardware carrier belt.
[0015] Figure 2 This is a structural schematic diagram of the hardware component that automatically drops the handle after reflowing in the furnace, provided by this utility model.
[0016] Figure 3 This is a cross-sectional view of the hardware component that automatically drops its handle after reflowing, provided by this utility model.
[0017] Figure 4 This is a schematic diagram of the hardware parts falling off after the furnace, provided by this utility model. Detailed Implementation
[0018] This utility model provides a hardware component that automatically drops its handle after reflow. To make the purpose, technical solution, and advantages of this utility model clearer and more explicit, the following detailed description, with reference to the accompanying drawings and embodiments, further illustrates the utility model. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this utility model.
[0019] Please also refer to Figure 2 , Figure 3 and Figure 4This utility model provides a hardware component that automatically detaches after reflow oven operation. It includes a hardware body 10 (used for the functional implementation of electronic products), a thermally sensitive weakening component 20, and a handle 30. The hardware body 10 is connected to the handle 30 via the thermally sensitive weakening component 20. (During production, using existing technology, the connecting end of the hardware body 10 is fixed to one end of the handle 30 via the thermally sensitive weakening component 20. An SMT placement machine mounts the assembled component onto a PCB (Printed Circuit Board), which then passes through a reflow oven.) After being heated in the reflow oven, the mechanical strength of the thermally sensitive weakening component 20 decreases to a preset value. Combined with the weight of the handle 30, the thermally sensitive weakening component 20 automatically breaks, allowing the handle 30 to detach automatically without manual or mechanical operation, thus improving removal efficiency. Furthermore, the automatic breakage of the thermally sensitive weakening component 20 is suitable for various shapes of hardware components without damaging them. It is applicable to the mounting of different hardware components during SMT (Surface Mount Technology) production, improving the compatibility of the hardware components.
[0020] In this embodiment, the heat-sensitive weakening component 20 is made of a heat-sensitive alloy material (preferably nickel-titanium alloy), which has sufficient mechanical strength at room temperature to support the main body 10 of the hardware component. During reflow soldering, the temperature reaches the reflow soldering temperature (approximately 250°C), reducing the mechanical strength of the heat-sensitive weakening component 20 to less than 30% of its room temperature value. The handle 30 is equivalent to the existing carrier tape body, but the handle 30 is longer than the carrier tape body, making it heavier than the carrier tape body and consequently heavier than the main body 10 of the hardware component. This asymmetrical weight distribution causes the handle 30 to droop naturally after reflow. Combined with the significantly reduced mechanical strength of the heat-sensitive weakening component 20 at this time, it is prone to automatic breakage. The length of the handle 30 is preferably more than three times the length of the main body 10 of the hardware component (the upper limit of the multiple is set according to cost and patch requirements, such as five times).
[0021] To ensure the heat-sensitive weakening component 20 is easy to break while maintaining the stability of the connection between the main body 10 and the handle 30 at room temperature, the heat-sensitive weakening component 20 is a cuboid with an arc-shaped groove. The side of the cuboid with the arc-shaped groove can face downwards (e.g., Figure 2 and Figure 3 (As shown) or downward, the horizontal plane opposite to the arc-shaped groove is level with or 1mm lower than the corresponding surface of the hardware body 10 and the handle 30. The depth D of the arc-shaped groove is preferably 70-90% of the thickness of the cuboid part. The part that is not grooved is used to ensure the pre-installation strength, meet the requirements of connection stability and automatic breakage after reflow.
[0022] The fracture point of the heat-sensitive weakening component 20 is at the bottom of the arc-shaped groove, and the fracture surface is smooth and burr-free after reflow. Preferably, a stress groove, such as a V-shaped notch, square groove, or arc-shaped groove, can also be provided on the surface of the horizontal plane opposite the bottom of the arc-shaped groove, with a preferred depth of 1 mm. These stress grooves are equivalent to forming stress concentration points on the horizontal surface. After the mechanical strength of the heat-sensitive weakening component 20 is reduced by reflow, combined with the downward force applied by the weight of the handle 30, the stress concentration points are more likely to fracture, improving the effectiveness of automatic detachment.
[0023] In summary, the automatic handle detachment hardware provided by this utility model connects the hardware body and handle using a heat-sensitive weakening component. Utilizing the significant reduction in mechanical strength of the heat-sensitive weakening component at high temperatures, combined with the arc-shaped groove and the downward force applied by the handle's weight, the arc-shaped groove automatically breaks after reflow, causing the handle to detach automatically. This eliminates the need for additional removal processes, simplifying the production process and improving efficiency. The fracture surface is smooth and burr-free, solving the problems of incomplete removal and burr formation in existing methods. Because the heat-sensitive weakening component can automatically break, it can be applied to hardware of various shapes without damaging the hardware, improving compatibility and suitability for automated production lines, greatly reducing manual intervention.
[0024] It should be understood that the application of this utility model is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.
Claims
1. A hardware fitting which automatically drops after passing through a furnace, characterized by comprising: It includes a hardware body, a heat-sensitive weakening component, and a handle; the hardware body is connected to the handle through the heat-sensitive weakening component, and the mechanical strength of the heat-sensitive weakening component is reduced to a preset value after being heated in the furnace, causing the heat-sensitive weakening component to break automatically and the handle to fall off automatically.
2. The self-dropping hardware after passing through the furnace according to claim 1, characterized in that, The thermal weakening component is a cuboid component with an arc-shaped groove.
3. The hardware component that automatically drops its handle after reflow as described in claim 2, characterized in that, The depth of the arc-shaped groove is 70-90% of the thickness of the cuboid part.
4. The hardware component that automatically drops its handle after reflow as described in claim 1, characterized in that, The length of the handle is three times the length of the main body of the hardware.
5. The hardware component that automatically drops its handle after reflow as described in claim 2, characterized in that, A stress groove is provided on the horizontal surface opposite the bottom of the arc-shaped groove.
6. The hardware component that automatically drops its handle after reflow as described in claim 5, characterized in that, The stress groove is a V-shaped notch, square groove, or arc groove with a depth of 1 mm.