Through hole axial component surface mounting installation forming tool
By designing a surface mount molding fixture for through-hole axial components, the problems of slow molding speed and low production efficiency were solved. It achieves good symmetry of lead shoulders and a damage-free molding effect, with strong adaptability, and is suitable for components of different sizes and heights.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN AEROSPACE LIAOYUAN SCI & TECH CO LTD
- Filing Date
- 2025-04-07
- Publication Date
- 2026-05-15
AI Technical Summary
In the existing technology, the forming speed of through-hole axial components is slow, the production efficiency is low, and manual forming is prone to damage to the components, which cannot meet the requirements of high reliability.
Design a surface mount forming tool for through-hole axial components, including a base, a positioning component, a U-shaped positioning seat and a U-shaped pressure block. The positioning component positions the component, and the U-shaped positioning seat and U-shaped pressure block cooperate to achieve symmetrical bending forming of the lead wire, ensuring the symmetry and no damage to the lead wire shoulder.
It achieves good symmetry of component lead shoulders, fast forming speed, high production efficiency, avoids lead damage, and has strong adaptability, suitable for component needs of different sizes and heights.
Smart Images
Figure CN224249930U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of component assembly technology, specifically to a surface mount molding fixture for through-hole axial components. Background Technology
[0002] Through-hole axial components are a type of semiconductor device widely used in electronic equipment, mainly including resistors, capacitors, diodes, and inductors, and their primary mounting method is through-hole mounting. However, in aerospace products, due to design requirements, these packaged devices need to be mounted using surface-mount pads. This type of mounting places high demands on the raised dimensions of the device body and the symmetry of the lead shoulders after molding. Conventional molding methods must ensure the raised height and lead shoulder symmetry after molding, thus requiring a high level of skill from the operators.
[0003] The traditional forming method is as follows: the axial component of the through hole is compared with the pad size, and then the component body size and lifting size are combined. The single-sided lead of the component is bent at 90° using toothless flat-jaw pliers, and finally the single side is formed into a Z shape. The above action is repeated to form the other side. After forming, the symmetry of the lead shoulders on both sides of the component body must be ensured. After installation, the body is parallel to the mounting surface and meets the height requirements of the body from the mounting surface.
[0004] However, manual forming has the following drawbacks: 1. Manual forming is prone to damage to the root of through-hole axial components and indentation of leads, which cannot guarantee the high reliability requirements of its application scenarios. 2. Manual forming is slow, resulting in low production efficiency. Utility Model Content
[0005] The purpose of this invention is to provide a surface mount molding fixture for through-hole axial components to solve the problems of slow molding speed and low production efficiency in existing molding methods.
[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:
[0007] A surface mount molding fixture for through-hole axial components includes:
[0008] The base has a fixing block at one end of the top, a through groove at the top of the base, and steps on both sides of the top of the base, with the two steps symmetrically distributed on both sides of the through groove.
[0009] A positioning component is disposed within the through slot and used to position components.
[0010] The U-shaped positioning seat is rotatably connected to the fixed block and is used to fix the lead wires in the components on the positioning assembly. The width of the U-shaped positioning seat is equal to the top width of the base.
[0011] And a U-shaped pressure block, which is located on the outside of the U-shaped positioning seat. The U-shaped pressure block is rotatably connected to the fixed block and is used to bend and shape the leads on the components.
[0012] Furthermore, the aforementioned positioning component includes two fixing plates symmetrically arranged on the inner walls of both sides of the through groove and arranged along the length direction of the base. The tops of both fixing plates extend out of the through groove. The two fixing plates are symmetrically provided with positioning grooves that match the leads of the components. The distance between the two fixing plates is equal to the width of the components. The distance between the side walls of the two fixing plates that are far apart from each other matches the inner diameter of the U-shaped positioning seat.
[0013] Furthermore, the bottom wall of the aforementioned positioning groove is flush with the top wall of the base.
[0014] Furthermore, a pin is provided laterally on the aforementioned fixing block, and the two ends of the U-shaped positioning seat are located on both sides of the fixing block and are rotatably engaged with the pin.
[0015] Furthermore, the aforementioned U-shaped pressure block includes a U-shaped pressure plate located outside the U-shaped positioning seat and rotatably engaged with the pin shaft, and two pressure strips symmetrically arranged on the side of the U-shaped pressure plate near the base, with each pressure strip corresponding to a step.
[0016] Furthermore, washers are fitted on both sides of the aforementioned pin, and the washers are located between the U-shaped positioning seat and the U-shaped pressure plate. The thickness of the washers is equal to the diameter of the lead wire in the component.
[0017] Furthermore, the aforementioned U-shaped pressure plate is integrally formed with the two pressure strips.
[0018] Furthermore, a protrusion is provided on the top side of the end of the U-shaped positioning seat away from the fixing block.
[0019] Furthermore, the aforementioned through groove is located at the center of the base.
[0020] Furthermore, the cross-section of the aforementioned base has a convex shape.
[0021] This utility model has the following beneficial effects:
[0022] 1. This utility model, by setting a positioning component, is used to position the component in the through groove of the base and ensure that the component is not skewed. The U-shaped positioning seat is rotated to position and fix the lead wire of the component on the positioning component. The U-shaped positioning seat is used to ensure that the root of the lead wire of the component does not curl upward. Then, the U-shaped pressure block is rotated to bend and shape the fixed lead wire of the component. Through the cooperation of the above components, and the width of the U-shaped positioning seat is equal to the top width of the base, the size of the lead shoulder after shaping corresponds to the width of the U-shaped positioning seat. The two steps are symmetrically distributed on both sides of the through groove. Therefore, the size of the lead shoulder after the component is symmetrical, and the lead wires at both ends of the component can be bent and shaped at the same time, resulting in good symmetry of the component lead wire after shaping. Moreover, it only takes about three seconds to complete the lead shaping of a component, which greatly improves the production efficiency.
[0023] 2. In the positioning component of this utility model, the distance between the two fixing plates is equal to the width of the component, and the distance between the side walls of the two fixing plates that are far apart from each other matches the inner diameter of the U-shaped positioning seat, ensuring the symmetry of the lead shoulder on the component after molding; by designing the bottom wall of the positioning groove to be flush with the top wall of the base, it ensures that the component lead is not damaged; the width of the U-shaped positioning seat of the molding fixture matches the size of the lead shoulder, so it will not cause damage to the component body; the U-shaped pressure block is made of epoxy glass material, so it will not cause indentations, scratches or other damage to the lead surface during the molding process.
[0024] 3. The surface mount molding fixture for through-hole axial components of this utility model has strong adaptability. When using it, the size of the lead shoulder can be adjusted by changing the U-shaped positioning seat of different widths; the height of the molded component can be adjusted by changing the base with different step heights. Attached Figure Description
[0025] Figure 1 A schematic diagram of the overall structure of a surface mount molding tooling for through-hole axial components;
[0026] Figure 2 This is a structural diagram of the base and positioning components;
[0027] Figure 3 This is a schematic diagram of the U-shaped positioning seat.
[0028] Figure 4 This is a schematic diagram of the U-shaped pressure block.
[0029] Figure 5 A schematic diagram of the structure of a surface mount molding fixture for through-hole axial components;
[0030] Figure 6 This is a schematic diagram of the structure of the molded component.
[0031] In the diagram: 1. Base; 11. Fixing block; 12. Through groove; 13. Step; 14. Pin; 2. Positioning assembly; 21. Fixing plate; 22. Positioning groove; 3. U-shaped positioning seat; 31. Protrusion; 4. U-shaped pressure block; 41. U-shaped pressure plate; 42. Pressure strip; 5. Components. Detailed Implementation
[0032] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.
[0033] like Figure 1 , Figure 5 and Figure 6 As shown, this embodiment of the present invention provides a surface mount molding fixture for axial components with through holes, including: a base 1, a positioning component 2, a U-shaped positioning seat 3, and a U-shaped pressure block 4. A fixing block 11 is provided at one end of the base 1, and a through groove 12 is formed at the top of the base 1. Steps 13 are respectively provided on both sides of the top of the base 1, and the two steps 13 are symmetrically distributed on both sides of the through groove 12, making the cross-section of the base 1 have a convex shape. In this embodiment, the through groove 12 is located at the center of the base 1. In other embodiments of the present invention, the through groove 12 is located on the central axis of the base 1 in the length direction, and the through groove 12 and the fixing block 11 are spaced apart. The positioning component 2 is disposed in the through groove 12 and is used to position the component 5. The U-shaped positioning seat 3 is rotatably connected to the fixing block 11 and is used to fix the lead wires in the component 5 on the positioning component 2. The width of the U-shaped positioning seat 3 is equal to the width of the top of the base 1. The U-shaped pressure block 4 is located outside the U-shaped positioning seat 3. The U-shaped pressure block 4 is rotatably connected to the fixing block 11 and is used to bend and shape the lead wires on the component 5.
[0034] In use, the component 5 to be formed is placed on the positioning component 2, which ensures that the component 5 is not skewed; the U-shaped positioning seat 3 is rotated so that the bottom of the U-shaped positioning seat 3 presses down on the lead wire of the component 5, thereby ensuring that the root of the lead wire of the component 5 does not curl up; the U-shaped pressure block 4 is further rotated, and the U-shaped pressure block 4 will squeeze the lead wires on both sides of the component 5 during the rotation process, and with the help of the step 13, the lead wires will be bent and deformed at 90°, realizing the bending and forming of the lead wire of the component 5. The width of the U-shaped positioning seat 3 is the width of the lead shoulder. Through the cooperation of the above components, the size of the lead shoulder on the formed component 5 is completely symmetrical, and it only takes about three seconds to complete the lead forming of one component 5, which greatly improves the production efficiency.
[0035] In this embodiment, the maximum width of the U-shaped positioning seat 3 is less than the maximum width of the base 1, and the minimum width of the U-shaped positioning seat 3 is equal to the top width of the base 1. By replacing the U-shaped positioning seat 3 with different widths, the size of the lead shoulder on the component 5 can be adjusted, which is suitable for the needs of lead shoulders of different sizes. At the same time, by replacing the base 1 with a different height of the step 13, the height of the component 5 after molding can be adjusted, which has strong applicability.
[0036] like Figures 2 to 4 As shown, the positioning component 2 includes two fixing plates 21 symmetrically arranged on the inner walls of both sides of the through groove 12 and along the length of the base 1. The tops of both fixing plates 21 extend beyond the through groove 12. Positioning grooves 22 matching the leads of the component 5 are symmetrically formed on each of the two fixing plates 21. The distance between the two fixing plates 21 is equal to the width of the component 5, and the distance between the mutually distant sidewalls of the two fixing plates 21 matches the inner diameter of the U-shaped positioning seat 3. Through the arrangement of the through groove 12, the U-shaped positioning seat 3, and the two fixing plates 21, the symmetry of the lead shoulders on the component 5 after molding can be ensured. In this embodiment, the bottom wall of the positioning groove 22 is flush with the top wall of the base 1, ensuring that the leads of the component 5 placed on the two fixing plates 21 contact the top of the base 1. Then, the U-shaped positioning seat 3 is rotated to position the leads, and the U-shaped pressure block 4 is rotated to bend and shape the leads, thus ensuring that the leads are undamaged.
[0037] In this embodiment, the U-shaped pressure block 4 is made of epoxy glass, which will not cause indentations, scratches or other damage to the surface of the lead wire during the molding process.
[0038] like Figure 5 As shown, a pin 14 is horizontally arranged on the fixing block 11, and the two ends of the U-shaped positioning seat 3 are respectively located on both sides of the fixing block 11 and rotate with the pin 14; in this embodiment, the pin 14 is arranged along the width direction of the base 1, and the two ends of the U-shaped positioning seat 3 are respectively provided with shaft holes adapted to the pin 14, thereby realizing the rotational engagement.
[0039] The U-shaped pressure block 4 includes a U-shaped pressure plate 41 located outside the U-shaped positioning seat 3 and rotatably engaged with the pin 14, and two pressure strips 42 symmetrically arranged on the side of the U-shaped pressure plate 41 near the base 1. The two pressure strips 42 correspond one-to-one with the steps 13. The size of the U-shaped cavity of the U-shaped pressure plate 41 is slightly larger than the size of the U-shaped positioning seat 3. The two ends of the U-shaped pressure plate 41 are respectively provided with shaft holes adapted to the pin 14, thereby realizing rotatable engagement. In this embodiment, the U-shaped pressure plate 41 and the two pressure strips 42 are integrally formed.
[0040] In another embodiment of this utility model, washers (not shown) are respectively fitted on both sides of the pin 14, and the washers are located between the U-shaped positioning seat 3 and the U-shaped pressure plate 41. The thickness of the washers is equal to the diameter of the lead wire in the component 5. This arrangement ensures that there is always a gap between the outer ends of the two ends of the U-shaped positioning seat 3 and the inner ends of the two ends of the U-shaped pressure plate 41, and the width of this gap matches the diameter of the lead wire in the component 5, which ensures that the U-shaped pressure block 4 will not cause squeezing damage to the lead wire on the component 5 during the molding process.
[0041] In another embodiment of this utility model, a protrusion 31 is provided on the top side of the end of the U-shaped positioning seat 3 away from the fixing block 11; the design of the protrusion 31 makes it easy to press and fix the U-shaped positioning seat 3 when the tooling is bending and forming the component 5, as the protrusion 31 on the top of the U-shaped positioning seat 3 extends out of the U-shaped pressure plate 41.
[0042] This utility model relates to a surface mount molding fixture for through-hole shaft components. In use, the component 5 to be molded is placed on two fixed plates 21, with the lead wires of component 5 aligned with the positioning grooves 22 on the fixed plates 21. Then, the U-shaped positioning seat 3 is rotated, pressing down on the lead wires on both sides of the component 5 placed on the fixed plates 21. Further rotation of the U-shaped pressure plate 41 and application of external force to it causes the lead wires to bend 90° towards the step 13 via the pressure strip 42, achieving bending and molding of the lead wires on both sides of the component 5 and ensuring the symmetry of the lead wire shoulders. The molding speed is fast and efficient. After molding, the U-shaped pressure plate 41 and the U-shaped positioning seat 3 are rotated in the opposite direction, and the molded component 5 can be ejected through the through groove 12.
[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A surface mount molding fixture for through-hole axial components, characterized in that, include: A base (1) is provided with a fixing block (11) at one end of the base (1), and a through groove (12) is provided at the top of the base (1). Steps (13) are provided on both sides of the top of the base (1), and the two steps (13) are symmetrically distributed on both sides of the through groove (12). Positioning component (2), which is disposed in the through slot (12) and used to position the component (5); U-shaped positioning seat (3), which is rotatably connected to the fixing block (11) and used to fix the lead wire in the component (5) on the positioning assembly (2). The width of the U-shaped positioning seat (3) is equal to the top width of the base (1). And a U-shaped pressure block (4), which is located outside the U-shaped positioning seat (3), and is rotatably connected to the fixing block (11) and used to bend and shape the lead wires on the component (5).
2. The through-hole axial component surface mount forming fixture according to claim 1, characterized in that, The positioning component (2) includes two fixing plates (21) symmetrically arranged on the inner walls of both sides of the through groove (12) and arranged along the length of the base (1). The tops of the two fixing plates (21) extend out of the through groove (12). The two fixing plates (21) are respectively symmetrically provided with positioning grooves (22) that match the lead wires of the component (5). The distance between the two fixing plates (21) is equal to the width of the component (5). The distance between the side walls of the two fixing plates (21) that are far apart from each other matches the inner diameter of the U-shaped positioning seat (3).
3. The through-hole axial component surface mount forming fixture according to claim 2, characterized in that, The bottom wall of the positioning groove (22) is flush with the top wall of the base (1).
4. The surface mount molding fixture for through-hole axial components according to any one of claims 1 to 3, characterized in that, A pin (14) is horizontally arranged on the fixed block (11), and the two ends of the U-shaped positioning seat (3) are respectively located on both sides of the fixed block (11) and rotate in cooperation with the pin (14).
5. The through-hole axial component surface mount forming fixture according to claim 4, characterized in that, The U-shaped pressure block (4) includes a U-shaped pressure plate (41) located outside the U-shaped positioning seat (3) and rotatably engaged with the pin (14), and two pressure strips (42) symmetrically arranged on the side of the U-shaped pressure plate (41) near the base (1), with the two pressure strips (42) corresponding to the steps (13) one by one.
6. The through-hole axial component surface mount forming fixture according to claim 5, characterized in that, Washers are fitted on both sides of the pin (14), and the washers are located between the U-shaped positioning seat (3) and the U-shaped pressure plate (41). The thickness of the washers is equal to the diameter of the lead wire in the component (5).
7. The through-hole axial component surface mount forming fixture according to claim 5, characterized in that, The U-shaped pressure plate (41) is integrally formed with the two pressure strips (42).
8. The through-hole axial component surface mount forming fixture according to claim 4, characterized in that, The top side of the end of the U-shaped positioning seat (3) away from the fixing block (11) is provided with a protrusion (31).
9. The through-hole axial component surface mount forming fixture according to claim 1, characterized in that, The through groove (12) is located at the center of the base (1).
10. The surface mount forming fixture for through-hole axial components according to claim 1, characterized in that, The base (1) has a convex cross-section.