Fixing and welding device for lead of ceramic dielectric capacitor

Abstract

The utility model discloses a ceramic dielectric capacitor lead fixing and welding device which comprises a placing table, limiting plates are arranged on the two sides of the placing table, two steps are arranged in the middle of the placing table, a through groove is formed between the inner steps of the two steps, limiting grooves are formed in the middles of the two limiting plates, the two limiting grooves are communicated with the through groove, and the through groove is communicated with the limiting plates. The two ends, in the length direction, of the containing table are each provided with a lead groove, the two lead grooves are symmetrically arranged with the middle line of the containing table as the symmetric line, and the two ends, in the length direction, of the lead grooves are arranged in a penetrating mode. After welding is completed, the amount of soldering paste is evenly distributed at the welding position of a product and a lead, the appearance quality of the welded product is greatly improved, the structure is simple, the structure is not prone to deformation under the high-temperature environment in a reflow soldering furnace, and repeated recycling can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a porcelain dielectric capacitor reflow soldering process, especially a porcelain dielectric capacitor lead fixing and welding device. BACKGROUND

[0002] In the lead welding process of the porcelain dielectric capacitor, solder paste needs to be applied to the two end heads of the porcelain dielectric capacitor, and then the ends of the two leads are fixed on the end heads with the solder paste, and then the porcelain dielectric capacitor is sent into a reflow soldering furnace, the solder paste is fully dissolved in the high temperature in the furnace, and the lead welding on the two end heads of the porcelain dielectric capacitor is realized after the temperature is cooled.

[0003] In the welding process, the solder paste amount of each product needs to be as uniform as possible, and the lead needs to be in the center of the end head without skewing. A large amount of time is spent on applying the solder paste and placing the lead. On the one hand, the welding efficiency is low, and it is difficult to maintain the consistency of the solder paste amount of each product. On the other hand, due to the hot air circulation in the reflow soldering furnace, the lead is easily blown skewing by the hot air without effective fixation, and the welding quality is low. SUMMARY

[0004] To solve the above technical problems, the utility model provides a porcelain dielectric capacitor lead fixing and welding device.

[0005] The utility model is realized through the following technical schemes.

[0006] The utility model provides a porcelain dielectric capacitor lead fixing and welding device, including the placement platform, both sides of the placement platform are provided with the limit board, the middle part of the placement platform is provided with two steps, the inner step between two steps forms a through slot in common, the middle part of two limit boards is equipped with the limit slot, two limit slots all communicate with the through slot, the both ends of the placement platform along the length direction are all provided with the lead slot, two lead slots are symmetrically arranged with the middle line of the placement platform as the symmetry line, and the both ends of the lead slot along the length direction are through setting.

[0007] Preferably, through holes are arranged on the placement platform and the two limit boards.

[0008] Preferably, two inclined tables are arranged on the placement platform, and one end of the inclined table with high inclination is located at one end of the two lead slots close to each other, and one end of the inclined table with low inclination is connected with the outer step of the two steps.

[0009] Preferably, a gap spacer is arranged between the placement platform and the limit board.

[0010] Preferably, two protrusions are arranged in the middle of the through slot, and a ventilation slot is arranged between the two protrusions.

[0011] Preferably, flow guide grooves are arranged on both sides of the bottom of the through slot, the both ends of the flow guide grooves are through and respectively communicated with the two limit slots, and the two flow guide grooves are communicated with the ventilation slot.

[0012] Preferably, the two ends of the bottom of the limiting plate are provided with inclined surfaces a.

[0013] Preferably, the two ends of the bottom of the placing table are provided with inclined surfaces b.

[0014] The beneficial effects of the utility model lie in that during welding operation, the product is placed on the two steps, meanwhile, the two protrusions have certain supporting effect on the product, the lead wires are placed in the two lead wire grooves respectively, the lead wires are fixed and limited with the product, the welding efficiency and welding quality are greatly improved, the ventilation groove and the flow guide groove are arranged, the welding temperature is not affected, the appearance of the product is not polluted due to the accumulation of the flux, meanwhile, the inclined table for accumulating the flux is arranged, the consistency of the flux amount of each product is ensured, the flux amount is evenly distributed at the product and the lead wire welding position after welding, the appearance quality of the product after welding is greatly improved, the structure is simple, the structure is not easy to deform under the high temperature environment in the reflow soldering furnace, and the structure can be recycled for many times. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the isometric view of the utility model;

[0016] Figure 2 is the explosion view of the utility model;

[0017] Figure 3 is the plan view of the utility model;

[0018] Figure 4 is the front view of the utility model;

[0019] Figure 5 is the left view of the utility model;

[0020] In the drawing: 1-placing table; 2-step; 3-inclined table; 4-ventilation groove; 5-flow guide groove; 6-lead wire groove; 7-through hole; 8-inclined surface a; 9-limiting plate; 10-limiting groove; 11-inclined surface b; 12-protrusion. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] It should be noted that all directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indications will also change accordingly.

[0023] In the embodiment, refer to Figure 1 , Figure 4 and Figure 5 , including the placement table 1, both sides of the placement table 1 are provided with limiting plates 9, the placement table 1 and the limiting plates 9 are both made of aluminum alloy material, have good heat conductivity, the placement table 1 and the two limiting plates 9 are both provided with through holes 7, the two limiting plates 9 are fixed on both sides of the placement table 1 by passing through the through holes 7 by bolts, gap pads are arranged between the placement table 1 and the limiting plates 9, the width of the overall structure is adjusted, and the product is suitable for being larger or smaller within the tolerance range.

[0024] In the embodiment, refer to Figure 1 , Figure 2 and Figure 3 , the middle parts of the two limiting plates 9 are provided with limiting grooves 10, the middle part of the placement table 1 is provided with two steps 2, the inner steps of the two steps 2 jointly form a through groove, two protrusions 12 are fixedly connected in the middle part of the through groove, a ventilation groove 4 is arranged between the two protrusions 12, flow guide grooves 5 are arranged on both sides of the bottom of the through groove, the two ends of the flow guide grooves 5 penetrate and respectively communicate with the two limiting grooves 10, the two flow guide grooves 5 communicate with the ventilation groove 4, the welding temperature is avoided from being affected in the welding process, in the high-temperature environment, the flux is guided out of the flow guide grooves 5, the situation that the flux is accumulated and adhered to the outer surface of the product is avoided, and then the appearance of the product is avoided from being polluted;

[0025] The two ends of the placement table 1 along the length direction are both provided with lead grooves 6, the two ends of the lead grooves 6 along the length direction are in a penetrating arrangement, the two lead grooves 6 are symmetrically arranged with the center line of the placement table 1 as the symmetry line, and the lead is conveniently positioned and placed.

[0026] In the embodiment, refer to Figure 1, the two inclined tables 3 are respectively connected with the outer steps of the two steps 2 at the low gradient end, so that the inclined tables 3 are located between the lead grooves 6 and the steps 2; the two leads are placed in the two lead grooves 6, the product is placed on the two steps 2, the two ends of the product are respectively in contact with the two leads, the welding position is located at the inclined table 3, the solder paste is respectively extruded on the two inclined tables 3, so that the height of the solder paste is flush with the height of the product; under the high-temperature environment, the solder paste is dissolved, the flux flows out through the flow guide groove 5 under the inclined table 3, so that the problem of flux accumulation and product pollution is avoided, and the cleaning difficulty is solved; when the solder paste cools, the solder paste will shrink inward, at this time, a slope will be generated on the upper surface of the solder paste, due to the action of the inclined table 3, a slope will also be generated on the lower surface of the solder paste, so that the lead is centered after welding, and the amount of solder paste at the welding position is uniform.

[0027] In the embodiment, the inclined table 3 is arranged on the bottom of the placement table 1, the two ends of the inclined table 3 are respectively located at the two ends of the lead groove 6, and the inclined table 3 is connected with the outer step of the step 2 at the low gradient end. Figure 2 , the two ends of the bottom of the limiting plate 9 are respectively provided with inclined surfaces a8, the two ends of the bottom of the placement table 1 are respectively provided with inclined surfaces b11, and the inclination angles of the inclined surfaces a8 and the inclined surfaces b11 are the same; since the flux flowing out downward has great viscosity after cooling, the inclined surfaces a8 and the inclined surfaces b11 will not be stuck by the flux, so that the whole structure is convenient to take out from the reflow soldering furnace.

[0028] The working principle of the embodiment is as follows: before welding, the product is first placed on the two steps 2, the product is fixed by the two limiting grooves 10, then the two leads are respectively placed in the two lead grooves 6, the leads are gently pushed inward to make the ends of the leads contact the ends of the product, the solder paste is extruded on the two inclined tables 3, the height of the solder paste is flush with the height of the product, and the structure is sent into the reflow soldering furnace; during welding, under the high-temperature environment, the solder paste is dissolved, the welding of the lead and the product is realized, and the flux flows out downward into the flow guide groove 5; after high-temperature welding, the structure enters the hot air environment, since the lead is fixed by the lead groove 6 and the product is fixed by the limiting groove 10, the product and the lead always keep centered welding, so that the phenomenon of virtual welding or appearance defect caused by skewing is avoided; when the solder paste cools, the solder paste shrinks inward, at this time, a slope is generated on the upper surface of the solder paste, due to the action of the inclined table 3, a slope is also generated on the lower surface of the solder paste, the lead is centered after welding, the amount of solder paste is uniform, the structure is symmetrical up and down and left and right, the appearance is excellent after welding, and the welding efficiency and the welding quality are greatly improved.

[0029] The above is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made according to the contents of the utility model specification and drawings or direct / indirect application in other related technical fields under the concept of the utility model is included in the patent protection range of the utility model.

Claims

1. A porcelain dielectric capacitor lead fixing and welding apparatus, characterized by: The utility model relates to a kind of placing table, including placing table (1), both sides of placing table (1) are provided with limiting plate (9), the middle part of placing table (1) is provided with two steps (2), the inner step of two steps (2) is formed with a through slot, the middle part of two limiting plates (9) is equipped with limiting slot (10), two limiting slots (10) are communicated with through slot, and the both ends of placing table (1) are provided with lead slot (6) along length direction, two lead slots (6) are symmetrically arranged with the middle line of placing table (1) as symmetry line, and the both ends of lead slot (6) are through setting along length direction.

2. A porcelain capacitor lead fixing and welding device as set forth in claim 1, wherein: Through hole (7) is arranged on placing table (1) and two limiting plates (9).

3. A ceramic capacitor lead fixation welding apparatus as claimed in claim 1, wherein: Two inclined tables (3) are arranged on placing table (1), and the end with high inclination of two inclined tables (3) is respectively located in the end of two lead slots (6) close to each other, and the end with low inclination of two inclined tables (3) is respectively connected with the outer step of two steps (2).

4. A ceramic capacitor lead fixation welding apparatus as claimed in claim 1, wherein: Gap spacer is arranged between placing table (1) and limiting plate (9).

5. A ceramic capacitor lead fixation welding apparatus as claimed in claim 1, wherein: Two protrusions (12) are arranged in the middle part of through slot, and ventilation slot (4) is arranged between two protrusions (12).

6. A ceramic capacitor lead fixation and welding apparatus as claimed in claim 5, wherein: Flow guide groove (5) is arranged in the both sides of the bottom of through slot, the both ends of flow guide groove (5) are through and respectively communicated with two limiting slots (10), and two flow guide grooves (5) are communicated with ventilation slot (4).

7. A ceramic capacitor lead fixation and welding apparatus as claimed in claim 1, wherein: Inclined surface a (8) is arranged in the both ends of the bottom of limiting plate (9).

8. A ceramic capacitor lead fixation welding apparatus as claimed in claim 1, wherein: Inclined surface b (11) is arranged in the both ends of the bottom of placing table (1).

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