Novel laser welding fixing device
By designing a capacitor laser welding device that includes a mounting base, a longitudinal pressure plate, and a transverse pressure plate, the problem of damage to tantalum rods and glass insulators during laser welding was solved, welding consistency was ensured, and the clamping requirements of the internal components of the capacitor were met.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-18
- Publication Date
- 2026-03-17
AI Technical Summary
Existing capacitor laser welding equipment cannot effectively prevent laser damage to tantalum rods and glass insulators, and cannot guarantee the consistency of product clamping during the welding process.
A fixing device is designed, including a mounting base, a longitudinal pressure plate, a transverse pressure plate, a longitudinal threaded rod, and a transverse threaded rod. The tantalum rod and glass insulator are protected by openings in the back plate and a protrusion structure. The clamping degree is adjusted by a scale and a knob to ensure the consistency of the components.
It effectively prevents laser damage to tantalum rods and glass insulators, and ensures consistent clamping of internal capacitor components during welding, thus improving welding quality.
Smart Images
Figure CN223997595U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of capacitor manufacturing, and specifically relates to a novel laser welding fixing device. Background Technology
[0002] Combined non-solid electrolyte tantalum capacitors are widely used in various civilian and military electronic products due to their numerous superior properties, such as small size, high voltage, large capacitance, low leakage current, low loss (low ESR), long life, good storage stability, excellent frequency characteristics, and ability to withstand large ripple current. Combined capacitors made using surface-mount high-energy hybrid tantalum capacitors are also widely used. However, during laser welding, the compaction of individual products and the consistency of the entire batch cannot be guaranteed. Furthermore, during laser welding, the tantalum rod and glass insulator may be subjected to abnormal thermal stress due to laser exposure, leading to damage to the glass insulator.
[0003] Chinese patent CN20383091U discloses a positioning fixture for laser welding of capacitor shells and caps. The positioning fixture uses a limiting mechanism and a clamping mechanism to position and clamp the capacitor to prevent welding deviation during the welding process.
[0004] However, this packaging fixture has the following problems:
[0005] ①The clamping mechanism only acts in the horizontal direction.
[0006] ② It cannot effectively prevent damage to tantalum rods and glass insulators caused by lasers. Utility Model Content
[0007] To address the above problems, this utility model provides a novel laser welding fixing device, comprising a mounting base, a longitudinal pressure plate, a transverse pressure plate, a longitudinal threaded rod, a transverse threaded rod, and a knob. The mounting base consists of a placement platform, a back plate behind the placement platform, and a fixing seat below the placement platform. There are two longitudinal threaded rods, which are vertically installed on the left and right sides of the placement platform, respectively. The two longitudinal threaded rods pass through the longitudinal pressure plate and then through the knob. The transverse threaded rod is horizontally installed in front of the placement platform, and the transverse pressure plate and the knob pass through the transverse threaded rod in sequence.
[0008] Furthermore, the placement platform is concave, with the groove facing upwards.
[0009] Furthermore, the width of the groove is set according to the product size.
[0010] Furthermore, the back panel has precision-cut openings.
[0011] Furthermore, scales are provided on the left and right sides below the longitudinal pressure plate, and the scales do not affect the movement of the longitudinal pressure plate on the longitudinal threaded rod.
[0012] Furthermore, the transverse pressure plate can rotate around the transverse threaded rod. When the transverse pressure plate is facing upward, its height exceeds that of the placement platform; when the transverse pressure plate is facing upward, its height is lower than that of the placement platform.
[0013] Furthermore, the longitudinal and transverse pressure plates have protrusions in the direction perpendicular to the product contact surface on the parts that contact the product.
[0014] Furthermore, the corners of the bump are rounded.
[0015] This utility model has the following beneficial effects:
[0016] 1) The back plate of the mounting base can effectively block laser damage to tantalum rods and glass insulators;
[0017] 2) The design of longitudinal and transverse pressure plates ensures that the internal components of the capacitors welded in the same batch are dimensionally consistent, so that the clamping degree of the internal components of the capacitors meets the requirements. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the welding fixing device in the embodiment of this utility model from a first perspective;
[0019] Figure 2 This is a schematic diagram of the welding fixing device in the embodiment of this utility model from a second perspective;
[0020] Figure 3 This is a structural schematic diagram of the welding and fixing device in an embodiment of this utility model from a third-person perspective.
[0021] Icons: 1-Mounting base; 2-Vertical pressure plate; 3-Horizontal pressure plate; 4-Vertical threaded rod; 5-Horizontal threaded rod; 6-Knob. Detailed Implementation
[0022] 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.
[0023] Example 1
[0024] Please see Figure 1-2This utility model provides a technical solution: a novel laser welding fixing device, comprising a mounting base 1, a longitudinal pressure plate 2, a transverse pressure plate 3, a longitudinal threaded rod 4, a transverse threaded rod 5, and a knob 6. The mounting base 1 consists of a placement platform, a back plate behind the placement platform, and a fixing seat below the placement platform. Two longitudinal threaded rods 4 are vertically installed on the left and right sides of the placement platform, respectively. The two longitudinal threaded rods 4 pass through the longitudinal pressure plate 2 and then through the knob 6. The transverse threaded rod 5 is horizontally installed in front of the placement platform, and the transverse pressure plate 3 and the knob 6 pass through the transverse threaded rod 5 sequentially. The knob 6 on the longitudinal threaded rod 4 can adjust the height of the longitudinal pressure plate 2, thereby longitudinally pressing the product and eliminating component gaps. Adjusting the transverse pressure plate 3 by the knob 6 ensures that the tantalum rod and glass insulator surfaces of the product are tightly against the opening surface of the mounting base.
[0025] The placement platform is concave, with the groove facing upwards. The width of the groove is set according to the product dimensions to prevent the product from shifting or rotating during continuous laser welding.
[0026] Precision openings are provided on the back plate. This prevents the laser from hitting the tantalum rod and glass insulator during laser welding, avoiding damage to the glass insulator due to instantaneous high heat, and does not affect the continuous laser welding of subsequent products.
[0027] A scale is provided on the left and right sides below the longitudinal pressure plate 2. The scale does not affect the movement of the longitudinal pressure plate 2 on the longitudinal threaded rod 4. The reading on the scale can objectively indicate the degree of compression. By adjusting the knob to control the pressing distance of the longitudinal pressure plate, the compression degree of the entire batch can be controlled. The two scales can ensure that the pressing is even.
[0028] The transverse pressure plate 3 can rotate around the transverse threaded rod 5. When the transverse pressure plate 3 is facing upward, its height exceeds the placement platform; when the transverse pressure plate 3 is facing upward, its height is lower than the placement platform.
[0029] The longitudinal pressure plate 2 and the transverse pressure plate 3 have protrusions in the direction perpendicular to the product contact surface on their product contact parts. This increases the contact area with the product and prevents damage to the product due to compression.
[0030] The corners of the bumps are rounded to prevent scratches to users or the product.
[0031] Work process:
[0032] First, use the front loosening knob 6 to move the longitudinal pressure plate 2 upward.
[0033] The second step is to loosen knob 6 to release the horizontal pressure plate 3. At this time, the horizontal pressure plate 3 is in the following state: Figure 3 As shown.
[0034] The third step is to push the product into the fixed space of the welding and fixing device through the slotted position of the mounting base 1. The tantalum rod and glass insulator of the product will pass through the precise opening position of the back plate.
[0035] Fifth step, rotate the horizontal pressure plate 3 as follows: Figure 1 In the indicated state, turn knob 6 inward to move the horizontal pressure plate 3 inward, so that the surface where the tantalum rod and glass insulator are located is in close contact with the back plate. Move the vertical pressure plate 2 down and adjust it so that the indicator scales on both sides of the vertical pressure plate 2 are consistent and are both design values.
[0036] Step 6: With the product secured by this welding and fixing device, perform laser spot welding to fix the cover plate to the outer shell. After spot welding is completed, loosen knob 6 upwards, the longitudinal pressure plate 2 moves upwards, loosen knob 6 outwards, and the transverse pressure plate 3 moves outwards and rotates to the attachment position. Figure 3 As shown, the product is unrestrained; remove the product.
[0037] Step 7: Remove the longitudinal threaded rod 4 and separate the longitudinal pressure plate 2 from the mounting base 1.
[0038] Step 8: Repeat steps 2 and 3.
[0039] The ninth step involves continuous laser welding to firmly bond the cover plate to the outer shell, achieving an airtight seal.
[0040] Step 10: After welding is complete, loosen knob 6 outwards, move the horizontal pressure plate 3 outwards and rotate it to the desired position. Figure 3 As shown, the product is unrestrained. Remove the product; the laser welding is now complete.
[0041] This invention effectively prevents laser damage to tantalum rods and glass insulators, and ensures the consistency of dimensions of internal components of capacitors welded in the same batch, so that the compaction of internal components of capacitors meets the requirements.
[0042] The above-disclosed embodiments are merely specific examples of this utility model. However, this utility model is not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of this utility model.
Claims
1. A novel laser welding fixture, characterized by, The utility model provides a kind of product fixing device, including installation base (1), longitudinal pressing plate (2), transverse pressing plate (3), longitudinal threaded rod (4), transverse threaded rod (5) and knob (6), wherein installation base (1) is constituted by placing table, backboard behind placing table and fixed seat below placing table;Two longitudinal threaded rods (4) are vertically installed respectively on the left and right sides of placing table, and two longitudinal threaded rods (4) pass through longitudinal pressing plate (2) and then pass through knob (6) respectively;Transverse threaded rod (5) is horizontally installed in front of placing table, and transverse pressing plate (3) and knob (6) pass through transverse threaded rod (5) in turn.
2. The novel laser welding fixture device as claimed in claim 1, wherein, The placing table is concave, and the groove faces upward.
3. The novel laser welding fixture device as claimed in claim 2, wherein, The groove width is set according to the product size.
4. The novel laser welding fixture device as claimed in claim 1, wherein, The backboard is provided with a precise opening.
5. The novel laser welding fixture device as claimed in claim 1, wherein, The longitudinal pressing plate (2) is provided with a scale on the left and right sides below, and the scale does not affect the movement of the longitudinal pressing plate (2) on the longitudinal threaded rod (4).
6. The novel laser welding fixture device as claimed in claim 1, wherein, The transverse pressing plate (3) can rotate around the transverse threaded rod (5), and when the transverse pressing plate (3) faces upward, its height exceeds the placing table; when the transverse pressing plate (3) faces upward, its height is lower than the placing table.
7. The novel laser welding fixture device as claimed in claim 1, wherein, The contact part of the longitudinal pressing plate (2) and the transverse pressing plate (3) with the product is provided with a protrusion in the vertical direction of the contact surface with the product.
8. The novel laser welding fixture device as claimed in claim 7, wherein, The angle of the protrusion is a rounded corner.