Surface-mounted device lead trimming tool

Abstract

The utility model discloses a trimming tool for a lead of a surface-mounted device. The trimming tool comprises a support part, a tool bit part and a positioning part, the tool bit part is mounted on the support part; the support part comprises a base; the positioning part comprises a positioning frame; the positioning frame is mounted on a base of the support part; the positioning frame is provided with a limiting plate with a square hole; the cutter head part comprises a cutter head with an acute inclination angle; correspondingly, the base is provided with a tool edge groove, and the tool edge groove is matched with the tool bit. Guide arms are arranged on the two sides of the tool bit. According to the surface-mounted device lead trimming tool, leads on the same side of a component can be trimmed at a time, and bending deformation of the leads is reduced; meanwhile, the trimming size of the lead of the component is controlled, and the consistency is high; the structure is simple, positioning is accurate, and operation is convenient.

Description

Technical Field

[0001] This utility model relates to a surface mount device lead trimming tool, belonging to the field of lead trimming technology in the communications electronics industry. Background Technology

[0002] With the increasing demand for high-performance, compact, and low-power electronic components in military electronic equipment, surface mount technology has become an important method for assembling electronic components. In this technological context, lead trimming fixtures for surface mount devices play a crucial role as key equipment for achieving component assembly accuracy and reliability.

[0003] Military products typically require extremely high precision and stability, especially during component lead trimming. Strict control over trimming accuracy is crucial to prevent lead length issues from affecting the contact quality between the component and the circuit board, thus impacting the overall system performance. Common trimming tools include diagonal pliers and lead trimming equipment. However, these tools have drawbacks. For example, diagonal pliers cannot control the trimming dimensions, easily causing lead bending, deformation, and dimensional errors, thus affecting component soldering reliability. Furthermore, lead trimming equipment is expensive, requires extensive positioning fixtures, and is complex to operate, making it unsuitable for the small-batch, multi-variety production needs of the military industry.

[0004] Therefore, it is necessary to design a new type of surface mount device lead trimming fixture that can trim the leads on the same side of the component in one go, reducing lead bending and deformation; at the same time, it can control the trimming size of the component leads and ensure high consistency; the structure is simple, the positioning is accurate, and the operation is convenient, making it suitable for small-batch, multi-variety production in the military industry, thereby meeting the precision and reliability requirements of military products. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a surface mount device lead trimming fixture that can control the trimming size of component leads and reduce lead bending deformation.

[0006] To achieve the above objectives, this utility model provides a surface mount device lead trimming fixture, comprising a support portion, a cutting head, and a positioning portion; the cutting head is mounted on the support portion; the support portion includes a base; the positioning portion includes a positioning frame, which is mounted on the base of the support portion; the positioning frame is provided with a limiting plate with a square hole; the cutting head includes a cutting tip with an acute angle of inclination; the corresponding base is provided with a cutting groove, which cooperates with the cutting tip; guide arms are provided on both sides of the cutting tip.

[0007] The blade tip has a tilt angle of 60°.

[0008] The support portion also includes a support arm that is perpendicularly connected to the base; the top end of the support arm is provided with a mounting platform perpendicular to the support arm.

[0009] The cutter head is provided with a connecting rod that connects to the cutter head, and the connecting rod passes through the mounting hole of the mounting platform; the top of the connecting rod is also provided with a drive handle, and the drive handle mounts the cutter head to the support part through the connecting support part and the connecting rod.

[0010] The drive handle has a first through hole and a second through hole on both sides of its middle and tail sections, respectively; a vertical mounting arm is provided on the side of the mounting platform near the support arm; the tail section of the drive handle is mounted on the mounting platform by passing a pin through the mounting arm and the second through hole in sequence; the drive handle is mounted on the top of the connecting rod by passing a pin through the first through hole and the connecting rod in sequence.

[0011] A torsion spring is provided circumferentially for the pin in the second through hole.

[0012] A main scale is provided on one side of the positioning frame, and a secondary scale that cooperates with the main scale is provided on the same side of the base.

[0013] The positioning part is also provided with locking screws, which are installed on both sides of the main scale of the positioning frame.

[0014] The base is provided with a sliding groove, and the positioning frame is provided with a sliding rail that cooperates with the sliding groove.

[0015] The base is also provided with a waste trough at the bottom, and the waste trough and the cutting edge groove are connected to each other; a storage box is provided in the waste trough, and the storage box is located below the cutting edge groove.

[0016] By adopting the above technical solution, the surface mount device lead trimming fixture of this utility model has the following beneficial effects:

[0017] First, by designing a 60° cutter head, impact stress is eliminated and bending deformation of the lead wire is reduced. Moreover, it integrates guidance and positioning, and cooperates with the base cutter groove to complete the one-time trimming of the lead wire on the same side. The guidance is stable and the operation is convenient.

[0018] Second, the design of the positioning frame solves the problem of uncontrollable component lead trimming dimensions. The trimming accuracy can reach 0.1mm, the trimmed component lead dimensions are highly consistent, the scrap rate is low, and the welding quality is improved.

[0019] Third, by setting up a collection box for collecting lead wire waste, the control of excess materials on the production site is in line with the requirements.

[0020] Fourth, by setting up force-applying components such as drive handles and torsion springs, the device leads can be trimmed independently without the aid of external force from other equipment.

[0021] V. This utility model has a simple structure, low manufacturing cost, flexible and convenient operation, outstanding effect, and broad application prospects. It is suitable for small-batch, multi-variety production in the military industry. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 This is a partial assembly diagram of the present invention.

[0024] Figure 3 This is a schematic diagram of the drive handle structure of this utility model.

[0025] Figure 4 This is a schematic diagram of the support structure of this utility model.

[0026] Figure 5 This is a structural diagram and sectional view of the blade head of this utility model.

[0027] Figure 6 This is a schematic diagram of the positioning frame structure of this utility model.

[0028] Figure 7 This is a schematic diagram of the storage box structure of this utility model. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] like Figure 1-7As shown, the surface mount device lead trimming fixture of this utility model includes a support, a cutter head, and a positioning part. The cutter head is mounted on the support. The support includes a base 1. The positioning part includes a positioning frame 3, which is mounted on the base 1 of the support. The positioning frame 3 is provided with a limiting plate 32 with a square hole 321. The cutter head includes a cutter head 2 with an acute angle of inclination. Correspondingly, the base 1 is provided with a cutter groove 13, which cooperates with the cutter head 2. Guide arms 22 are provided on both sides of the cutter head 2. By setting the positioning frame 3 and the limiting plate 32, the trimming position of the component 6 lead can be precisely controlled, reducing errors and improving trimming accuracy. At the same time, through the design of the mounting platform 12 of the support and the cooperation between the cutter groove 13 and the cutter head 2, the cutter head 2 can be stably limited on the base 1 during operation, avoiding displacement caused by vibration or external force, and enhancing the stability of the entire trimming fixture. In addition, the acute angle of the blade head makes the trimming operation smoother, reduces operating resistance, and improves the convenience and efficiency of operation. Moreover, the guide arm 22 provides guidance and support for the operation of the blade head 2, preventing damage to the blade head 2 due to uneven force, and also improving safety during operation.

[0031] The blade 2 has a tilt angle of 60°, which allows it to cut into the material at the optimal angle during trimming, reducing trimming resistance, lowering the risk of wire bending and deformation, improving cutting efficiency, and reducing energy consumption. Furthermore, this angle enables the blade 2 to produce a smooth cutting surface during trimming, reducing burrs and material tearing, thereby improving the surface quality of the trimmed workpiece.

[0032] The support portion also includes a support arm 11 perpendicularly connected to the base 1, which provides stronger support, making the entire trimming fixture structure more stable, able to withstand greater workloads, and reducing vibration and deformation. The top of the support arm 11 is provided with a mounting platform 12 perpendicular to the support arm 11, which ensures that the blade head or other components can be accurately installed and kept horizontal, thereby improving the overall accuracy and reliability of the trimming fixture.

[0033] The cutter head is provided with a connecting rod 21 that connects to the cutter head 2. The connecting rod 21 passes through the mounting hole 121 of the mounting platform 12. A drive handle 5 is also provided on the top of the connecting rod 21. The drive handle 5 connects the cutter head to the support portion via the connecting support portion and the connecting rod 21. The operator can easily drive the cutter head 2 to different positions using the drive handle 5, thereby improving operational flexibility and reducing labor intensity during work.

[0034] The drive handle 5 has a first through hole 51 and a second through hole 52 on both sides of its middle and tail sections, respectively. A vertical mounting arm 16 is provided on the side of the mounting platform 12 near the support arm 11. The tail of the drive handle 5 is mounted on the mounting platform 12 by pins passing through the mounting arm 16 and the second through hole 52. The drive handle 5 is also mounted on the top of the connecting rod 21 by pins passing through the first through hole 51 and the connecting rod 21. Fixing the drive handle 5 to the mounting platform 12 and the connecting rod 21 with pins ensures a tight connection between the drive handle 5 and the overall tooling structure. This method effectively prevents the drive handle 5 from loosening or shifting during use, enhancing the stability of the tooling. Simultaneously, the design of the first through hole 51 and the second through hole 52 allows the drive handle 5 to maintain flexibility during use. Furthermore, the pin connection method has good load-bearing capacity, can distribute stress, and avoids wear or damage to the connection points due to prolonged use, thus improving the overall service life.

[0035] A torsion spring 14 is circumferentially provided on the pin of the second through hole 52. Preferably, in this embodiment, the torsion spring 14 is a single-arm bending torsion spring, which is used to drive the handle 5 to provide elastic restoring force. When the operator releases the handle, the drive handle 5 can automatically return to its initial position, reducing the need for manual adjustment and improving operating efficiency. In addition, the elastic effect of the torsion spring 14 can offset part of the operating force, reducing hand fatigue for the operator during long-term work and improving operating comfort.

[0036] A main scale 33 is provided on one side of the positioning frame 3, and a secondary scale 34 that cooperates with the main scale 33 is provided on the same side of the base 1. By precisely adjusting the scale, the operator can quickly find the best trimming position, reduce adjustment time, and improve overall work efficiency.

[0037] The positioning part is also provided with locking screws 31, which are installed on both sides of the main scale 33 of the positioning frame 3. They are used to firmly fix the positioning frame 3 in the required position to prevent it from loosening or shifting during operation, and to ensure the positioning accuracy and stability of the trimming fixture. With the fixing of the locking screws 31, the positioning frame 3 can always maintain the preset position and avoid deviation caused by vibration or external force, thereby improving the overall accuracy of the trimming fixture.

[0038] The base 1 is provided with a sliding groove 15, and the positioning frame 3 is provided with a sliding rail 35 that cooperates with the sliding groove 15. This allows for precise movement of the positioning frame 3 on the base 1, maintaining accurate position and angle during adjustment. Furthermore, the design of the sliding rail 35 and the sliding groove 15 makes the movement of the positioning frame 3 smooth and simple. Operators can easily push the positioning frame 3 to quickly adjust it to the desired position without complicated locking or disassembly operations, thus improving work efficiency and convenience.

[0039] The base 1 also has a waste trough 41 at its bottom, which is connected to the blade groove 13. A collection box 4 is installed in the waste trough 41, located below the blade groove 13. This connection between the waste trough 41 and the blade groove 13 ensures that waste generated during trimming can smoothly enter the collection box 4, preventing waste from scattering in the work area and maintaining a clean working environment. This is significant for improving operational efficiency and reducing cleaning time. Furthermore, the collection box 4 allows for centralized collection of waste, preventing it from scattering in other areas or interfering with operators. This makes the tooling more convenient to use, improves waste management efficiency, and reduces the hassle of waste cleaning.

[0040] The waste trough 41 is provided with inner wall storage guide rails 42 on both sides, and the corresponding storage box 4 is provided with storage guide protrusions 43 on both sides to ensure that the storage box 4 slides smoothly in the waste trough 41, avoids the storage box 4 from shifting or becoming unstable during use, makes the collection and storage of waste more stable, and reduces interference during operation.

[0041] The base 1 is provided with positioning holes 7 for fixing it to the worktable, ensuring a firm connection between the base 1 and the worktable and preventing displacement or shaking of the fixture during use. This ensures the stability of the fixture and improves operational accuracy for delicate operations or tasks requiring significant force.

[0042] The operating procedure for daily use is as follows:

[0043] ① First, fix the tooling to the worktable through the positioning holes 7 on both sides.

[0044] ② Based on the length required for trimming the lead wire of component 6, adjust the relative position of the positioning frame 3 in the slide groove 15 of the base 1. Observe the length through the scale on the side. After the position is adjusted, rotate the two locking screws 31 on the positioning frame 3 to fix it on the base 1.

[0045] ③ Place the component 6 whose leads need to be trimmed on the base 1 of the support part. The lead of component 6 passes through the square hole 321 under the positioning frame 3 limiting plate 32, and the encapsulation surface on the lead side of the component is in close contact with the positioning frame 3 limiting plate 32.

[0046] ④ Drive the handle 5 downwards, and the handle will drive the cutter head 2 down along the guide hole of the support. The cutter head 2 and the cutting groove 13 together complete the trimming of the lead wire of component 6. Release the handle, and the cutter head 2 will return to its original position under the action of the torsion spring 14.

[0047] ⑤ After trimming a certain number of device leads, remove storage box 4 and clean up the trimmed lead waste in the designated place.

[0048] By adopting the above technical solution, the surface mount device lead trimming fixture of this utility model has the following beneficial effects:

[0049] 1. By designing a 60° cutter head 2, impact stress is eliminated and bending deformation of the lead wire is reduced. Moreover, it integrates guidance and positioning, and cooperates with the cutter groove 13 of the base 1 to complete the one-time trimming of the lead wire on the same side. The guidance is stable and the operation is convenient.

[0050] Second, the design of the positioning frame 3 solves the problem of uncontrollable trimming size of component 6 lead wires. The trimming accuracy can reach 0.1mm, the trimmed lead wire size of component 6 is highly consistent, the scrap rate is low, and the welding quality is improved.

[0051] 3. By setting up a collection box 4 for collecting lead wire waste, the control of excess materials on the production site is in line with the requirements.

[0052] IV. With the installation of force-applying components such as drive handle 5 and torsion spring 14, the device leads can be trimmed independently without the aid of external force from other equipment.

[0053] V. This utility model has a simple structure, low manufacturing cost, flexible and convenient operation, outstanding effect, and broad application prospects. It is suitable for small-batch, multi-variety production in the military industry.

[0054] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A surface mount device lead trimming fixture, characterized in that: It includes a support portion, a cutter head, and a positioning portion; the cutter head is mounted on the support portion; the support portion includes a base; the positioning portion includes a positioning frame, which is mounted on the base of the support portion; the positioning frame is provided with a limiting plate with a square hole; the cutter head includes a cutter head with an acute angle of inclination; the corresponding base is provided with a cutting edge groove, which cooperates with the cutter head; guide arms are provided on both sides of the cutter head.

2. The surface mount device lead trimming fixture as described in claim 1, characterized in that: The blade tip has a tilt angle of 60°.

3. The surface mount device lead trimming fixture as described in claim 1, characterized in that: The support portion also includes a support arm that is perpendicularly connected to the base; the top end of the support arm is provided with a mounting platform perpendicular to the support arm.

4. The surface mount device lead trimming fixture as described in claim 3, characterized in that: The cutter head is provided with a connecting rod that connects to the cutter head, and the connecting rod passes through the mounting hole of the mounting platform; the top of the connecting rod is also provided with a drive handle, and the drive handle mounts the cutter head to the support part through the connecting support part and the connecting rod.

5. The surface mount device lead trimming fixture as described in claim 4, characterized in that: The drive handle has a first through hole and a second through hole on both sides of its middle and tail sections, respectively; a vertical mounting arm is provided on the side of the mounting platform near the support arm; the tail section of the drive handle is mounted on the mounting platform by passing a pin through the mounting arm and the second through hole in sequence; the drive handle is mounted on the top of the connecting rod by passing a pin through the first through hole and the connecting rod in sequence.

6. The surface mount device lead trimming fixture as described in claim 5, characterized in that: A torsion spring is provided circumferentially for the pin in the second through hole.

7. The surface mount device lead trimming fixture as described in claim 1, characterized in that: A main scale is provided on one side of the positioning frame, and a secondary scale that cooperates with the main scale is provided on the same side of the base.

8. The surface mount device lead trimming fixture as described in claim 7, characterized in that: The positioning part is also provided with locking screws, which are installed on both sides of the main scale of the positioning frame.

9. The surface mount device lead trimming fixture as described in claim 1, characterized in that: The base is provided with a sliding groove, and the positioning frame is provided with a sliding rail that cooperates with the sliding groove.

10. A surface mount device lead trimming fixture as described in any one of claims 1-9, characterized in that: The base is also provided with a waste trough at the bottom, and the waste trough and the cutting edge groove are connected to each other; a storage box is provided in the waste trough, and the storage box is located below the cutting edge groove.

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