Reflow soldering jig for pulse bracket capacitor

Abstract

According to the reflow soldering jig for the pulse support capacitor, the pulse support capacitor comprises a capacitor body and two supports oppositely arranged at the two ends of the capacitor body. Comprising a base, a mounting groove formed in the base and used for mounting a capacitor body, two positioning grooves formed in the base, located on the two sides of the mounting groove and used for mounting supports, two fixing mechanisms oppositely arranged on the base and used for fixing the opposite supports, and a clamping mechanism arranged on the base and used for clamping the capacitor body and the two supports. According to the reflow soldering jig, the structure of the reflow soldering jig is limited, the support is fixed through the fixing mechanism so that the support can be attached to the end of the capacitor body, then the assembled capacitor body and the support are clamped and fixed through the clamping mechanism, the clamping force needed in the reflow soldering process of the support capacitor is met, the requirement for batch production is met, and the production efficiency is improved. And the production efficiency is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the field of capacitor preparation, and in particular relates to a reflow soldering jig for pulse bracket capacitors. Background Art

[0002] During the production process of bracket ceramic capacitors, the capacitor core needs to be welded to the bracket, but the existing welding jig cannot fix the limit bracket well. During the welding process, the bracket is prone to tilting, the core cracking, and the product falling apart. In addition, since the bracket and the capacitor core are difficult to assemble and position, the production efficiency is low and mass production is difficult. Further improvement is needed. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and provide a reflow soldering fixture for a pulse bracket capacitor.

[0004] The utility model adopts the following technical solutions:

[0005] A reflow soldering jig for a pulse bracket capacitor, the pulse bracket capacitor includes a capacitor body and two brackets arranged at both ends of the capacitor body, including a base, a mounting groove arranged on the base for mounting the capacitor body, two positioning grooves arranged on both sides of the mounting groove for mounting the brackets, two fixing mechanisms arranged on the base for fixing the relative brackets, and a clamping mechanism arranged on the base for clamping the capacitor body and the two brackets.

[0006] Furthermore, the bracket includes a connecting frame connected to the capacitor body, a supporting foot arranged below the connecting frame and connected to the circuit board, and a connecting lead arranged between the frame and the supporting foot, and the fixing mechanism includes a fixing block detachably arranged on the base and a fixing member arranged between the fixing block and the base, and the fixing block is provided with a fixing portion for fixing the supporting foot.

[0007] Furthermore, the supporting foot includes a supporting foot body and a limiting block arranged on the supporting foot body for fixing the connecting lead, the limiting block is formed with a clearance hole for the connecting lead to pass through, and the opposite surface of the fixing portion and the limiting block is formed with a fixing groove for the limiting block to be embedded.

[0008] Furthermore, the width of the supporting foot plate body is smaller than the width of the positioning groove.

[0009] Furthermore, the fixing member includes a first fixing hole arranged on the fixing block, a second fixing hole arranged on the base opposite to the first fixing hole, and a fixing bolt passing through the first fixing hole and cooperating with the second fixing hole.

[0010] Furthermore, the clamping mechanism includes two clamping blocks arranged on the sides of the two brackets relative to each other and a clamping member arranged between the clamping blocks and the base, and the clamping blocks are located above the fixing block.

[0011] Furthermore, the opposing surfaces of the connection frame and the capacitor body end are outwardly punched to form a lead groove for embedding the connecting lead, and the opposing surfaces of the clamping block and the connection frame are formed with a limiting groove adapted to the lead groove.

[0012] Furthermore, the clamping member includes two first clamping holes relatively arranged on both sides of the clamping block, two second clamping holes arranged on the base respectively opposite to the two first clamping holes, positioning magnets respectively arranged in the two second clamping holes, and clamping bolts passing through the first clamping holes and fitting relative to the positioning magnets.

[0013] Furthermore, the bottom of the connection frame is formed with two supporting plates extending inwards for supporting the capacitor body, and the bottom of the clamping block is formed with two receiving plates extending inwards for receiving the two supporting plates respectively.

[0014] Furthermore, a plurality of weight-reducing holes are arranged at intervals on the base.

[0015] From the above description of the utility model, it can be seen that compared with the prior art, the beneficial effects of the utility model are: by limiting the structure of the reflow soldering jig, the bracket is fixed by a fixing mechanism so that it fits with the end of the capacitor body, and then the assembled capacitor body and the bracket are clamped and fixed by a clamping mechanism to meet the clamping force required by the bracket capacitor during the reflow soldering process, to meet the requirements of mass production, and effectively improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the structure of the reflow soldering fixture Figure 1 ;

[0017] Figure 2 Schematic diagram of the structure of the reflow soldering fixture Figure 2 ;

[0018] Figure 3 Schematic diagram of the structure of the reflow soldering fixture Figure 3 ;

[0019] Figure 4 Schematic diagram of the structure of the reflow soldering fixture Figure 4 ;

[0020] Figure 5 The first embodiment of the pulse support capacitor is shown in FIG. Figure 1 ;

[0021] Figure 6 The first embodiment of the pulse support capacitor is shown in FIG. Figure 2 ;

[0022] Figure 7 It is a schematic structural diagram of a second embodiment of a pulse support capacitor;

[0023] Figure 8 The third embodiment of the pulse support capacitor is shown in FIG. Figure 1 ;

[0024] Fig. 9 The third embodiment of the pulse support capacitor is shown in FIG. Figure 2 ;

[0025] Fig.10 It is a schematic structural diagram of a fourth embodiment of a pulse support capacitor;

[0026] In the figure, 1-capacitor body, 2-bracket, 3-base, 4-mounting seat, 5-mounting slot, 6-positioning slot, 7-fixing mechanism, 8-clamping mechanism, 11-capacitor chip, 12-end electrode, 13-discharge resistor, 14-protective layer, 21-connecting frame, 211-support plate, 212-lead groove, 22-support foot, 221-support foot plate body, 222-limiting block, 223-allowing hole, 224-support section, 225-arc-shaped limiting section , 23-connecting lead, 231-positioning part, 232-extension part, 31-weight reduction hole, 71-fixing block, 711-fixing part, 712-fixing groove, 72-fixing piece, 721-first fixing hole, 722-second fixing hole, 723-fixing bolt, 81-clamping block, 811-limiting groove, 812-receiving plate, 82-clamping piece, 821-first clamping hole, 822-second clamping hole, 823-positioning magnet, 824-clamping bolt. DETAILED DESCRIPTION

[0027] The present invention is further described below through specific implementation methods.

[0028] Reference Figures 5 to 10 As shown, a pulse bracket capacitor with a discharge resistor includes a capacitor body 1 and two brackets 2 arranged at two ends of the capacitor body 1 opposite to each other.

[0029] The capacitor body 1 includes a capacitor chip 11, two end electrodes 12 relatively arranged at both ends of the capacitor chip 11, a discharge resistor 13 arranged on the top surface of the capacitor chip 11 and connected between the two end electrodes 12, and a protective layer 14 arranged on the surface of the discharge resistor 13. By setting the protective layer 14, it is possible to avoid sparking arcs or contamination of the discharge resistor 13 during the production process, thereby affecting the performance of the discharge resistor 13; specifically, the discharge resistor 13 can be set to be single or double. When double discharge resistors 13 are set, it can be ensured that the residual energy can still be released when a single discharge resistor 13 fails; further, referring to Figures 5 to 7As shown, the discharge resistor 13 can be arranged on the surface of the capacitor chip 11 in a strip shape; Figures 8 to 9 As shown, the discharge resistor 13 can be arranged on the surface of the capacitor chip 11 in an arc shape; Fig.10 As shown, the discharge resistor 13 can be arranged on the surface of the capacitor chip 11 in an S shape.

[0030] The two brackets 2 are connected to the two end electrodes 12 respectively. The bracket 2 includes a connection frame 21 connected to the end electrode 12, a support foot 22 arranged below the connection frame 21 and connected to the circuit board 12, and a connection lead 23 arranged between the connection frame 21 and the support foot 22.

[0031] The connecting frame 21 includes two support plates 211 spaced apart and extending inwardly at the bottom thereof, and the capacitor body 1 is supported between four opposing support plates 211 .

[0032] The connecting lead 23 includes a positioning portion 231 connected to the supporting foot 22 and two extension portions 232 relatively arranged on both sides of the positioning portion 231 and extending upward and connected to the connecting frame 21, so that the connecting lead 23 is designed in a U-shaped structure, which can better release stress from vibration and impact, improve the reliability of the pulse bracket capacitor, and avoid stress transmission to the end of the pulse bracket capacitor; accordingly, the relative surfaces of the connecting frame 21 and the end electrode 12 are stamped and extended outward to form a lead groove 212 for the extension portion 232 to be embedded; specifically, the lead groove 212 is obliquely arranged on the connecting frame 21, and by embedding and wrapping the connecting lead 23 in the lead groove 212, the bonding strength between the connecting lead 23 and the connecting frame 21 is greatly enhanced, and the obliquely arranged connecting lead 23 can better withstand impact force without deformation; further, the connecting lead 23 adopts copper wire to ensure the supporting force for the capacitor body 1.

[0033] The supporting foot 22 includes a supporting foot body 221 and a limiting block 222 arranged on the supporting foot body 221 for fixing the positioning portion 231. Specifically, the limiting block 222 is formed with a clearance hole 223 for the positioning portion 231 to pass through. By limiting the structure of the supporting foot 22, it has better structural strength, and can allow the positioning portion 231 of the connecting lead 23 to produce adaptive rotational deformation in the axial direction, so that the supporting end of the pulse bracket capacitor has a certain twisting deformation ability without transferring stress to the end of the capacitor body; further, the limiting block 222 includes two supporting sections 224 arranged on the supporting foot body 221 at intervals and an arc-shaped limiting section 225 connected between the two supporting sections 224, and a clearance hole 223 for the connecting lead positioning portion 232 to pass through is formed between the arc-shaped limiting section 225 and the supporting foot body 221.

[0034] A method for preparing a pulse bracket capacitor with a discharge resistor comprises fixing a capacitor body 1 and two brackets 2 on a reflow soldering jig respectively, and then sending the reflow soldering jig equipped with the capacitor body 1 and the brackets 2 into a reflow furnace for reflow soldering to obtain the pulse bracket capacitor with a discharge resistor.

[0035] Reference Figures 1 to 4 As shown, the reflow soldering fixture includes a base 3, a mounting seat 4 arranged in the middle of the base 3, a mounting groove 5 extending downward from the top surface of the mounting seat 4 for mounting the capacitor body 1, two positioning grooves 6 arranged on the base 3 on both sides of the mounting groove 5 for mounting the bracket 2, two fixing mechanisms 7 relatively arranged on the base 3 for fixing the relative brackets 2, and a clamping mechanism 8 arranged on the base 3 for clamping the capacitor body 1 and the two brackets 2; specifically, the width of the positioning groove 6 is greater than the length of the support foot body 221, so as to facilitate fine-tuning the position between the bracket 2 and the capacitor body 1.

[0036] The base 3 has a plurality of weight-reducing holes 31 arranged at intervals thereon.

[0037] The fixing mechanism 7 includes a fixing block 71 detachably arranged on the base 1 and a fixing member 72 arranged between the fixing block 71 and the base 3. Specifically, the fixing block 71 is provided with a fixing portion 711 for fixing the supporting foot 22, and the opposite surface of the fixing portion 711 and the limiting block 222 is formed with a fixing groove 712 for the arc-shaped limiting section 225 of the limiting block 222 to be embedded; the fixing member 72 includes a first fixing hole 721 arranged on the fixing block 71, a second fixing hole 722 arranged on the base 3 opposite to the first fixing hole 721, and a fixing bolt 723 passing through the first fixing hole 721 and cooperating with the second fixing hole 722.

[0038] The clamping mechanism 8 includes two clamping blocks 81 relatively arranged on the sides of the two brackets 2 and a clamping member 82 arranged between the clamping block 81 and the base 3. Specifically, the clamping block 81 is located above the relative fixing block 71, and a limiting groove 811 adapted to the lead groove 212 is formed on the opposite surface of the clamping block 81 and the connecting frame 21. The clamping position between the clamping block 81 and the bracket 2 can be quickly adjusted through the cooperation between the limiting groove 811 and the lead groove 212; the clamping member 82 includes two first clamping holes 821 relatively arranged on both sides of the clamping block 81, two second clamping holes 822 arranged on the mounting seat 4 and respectively opposite to the two first clamping holes 821, and two second clamping holes 822 respectively arranged in the two second clamping holes 822. The positioning magnet 823 and the clamping bolt 824 passing through the first clamping hole 821 and fitting with the relative positioning magnet 823 can provide the clamping force required in the reflow soldering process by adjusting the position of the clamping bolt 824 so that it fits with the relative positioning magnet 823; and provide a slight clamping suction force during the welding process to allow the capacitor to be slightly deformed under the action of thermal expansion and contraction, thereby avoiding the capacitor from falling apart or the capacitor body 1 from cracking; further, the bottom of the clamping block 81 forms two receiving plates 812 extending inwardly and respectively receiving the two support plates 211; when the clamping block 81 clamps the capacitor body 1 and the bracket 2, the two receiving plates 812 respectively receive the relative support plates 211.

[0039] When assembling the pulse bracket capacitor, first fix the capacitor body 1 in the installation groove 5, and then install the two brackets 2 in the two positioning grooves 6 respectively so that the brackets 2 fit the end electrodes 12 of the capacitor body 1; then pre-fix the fixing block 71 on the base 1 through the fixing bolts 723, at this time, the limit block 222 is embedded in the fixing groove 712, and the fixing bolts 712 are not completely tightened on the base 3; then, the capacitor body 1 and the two brackets 2 are clamped between the two clamping blocks 81 through the positioning magnet 823 and the clamping bolts 824; finally, tighten the fixing bolts 723 to complete the assembly of the pulse bracket capacitor.

[0040] The present application defines the structure of a pulse bracket capacitor, and sets a discharge resistor 13 on its surface, so that the pulse bracket capacitor can form a path with the discharge resistor 13 after the circuit is interrupted, and release the residual energy of the capacitor through the discharge resistor 13, thereby improving the safety of the circuit, and further defines the structure of the bracket 2, through the coordination between the connecting frame 22, the connecting lead 23 and the supporting foot 22, so as to improve the reliability of the bracket capacitor in resisting mechanical vibration; so that the prepared pulse bracket capacitor can meet the market demand; at the same time, further define the structure of the reflow soldering jig, the bracket 2 is fixed by the fixing mechanism 7 so that it fits with the end of the capacitor body 1, and then the assembled capacitor body 1 and the bracket 2 are clamped and fixed by the clamping mechanism 8, so as to meet the clamping force required by the bracket capacitor during the reflow soldering process, so as to meet the requirements of mass production and effectively improve production efficiency.

[0041] The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of implementation of the present invention. That is, equivalent changes and modifications made according to the scope of application of the present invention and the contents of the specification should still fall within the scope covered by the present invention.

Claims

1. A reflow soldering fixture for a pulse bracket capacitor, the pulse bracket capacitor comprising a capacitor body and two brackets arranged oppositely at two ends of the capacitor body, characterized in that: The utility model comprises a base, a mounting groove arranged on the base for mounting a capacitor body, two positioning grooves arranged on both sides of the mounting groove for mounting a bracket, two fixing mechanisms arranged on the base for fixing the brackets relative to each other, and a clamping mechanism arranged on the base for clamping the capacitor body and the two brackets.

2. A reflow soldering fixture for pulse bracket capacitors according to claim 1, characterized in that: The bracket includes a connecting frame connected to the capacitor body, a supporting foot arranged below the connecting frame and connected to the circuit board, and a connecting lead arranged between the frame and the supporting foot. The fixing mechanism includes a fixing block detachably arranged on the base and a fixing member arranged between the fixing block and the base. The fixing block is provided with a fixing portion for fixing the supporting foot.

3. A reflow soldering fixture for pulse bracket capacitors according to claim 2, characterized in that: The supporting foot comprises a supporting foot body and a limiting block arranged on the supporting foot body for fixing the connecting lead, the limiting block is formed with a clearance hole for the connecting lead to pass through, and the opposite surface of the fixing portion and the limiting block is formed with a fixing groove for the limiting block to be embedded.

4. A reflow soldering fixture for pulse bracket capacitors according to claim 3, characterized in that: The width of the supporting foot plate body is smaller than the width of the positioning groove.

5. A reflow soldering fixture for pulse bracket capacitors according to claim 2, characterized in that: The fixing member comprises a first fixing hole arranged on the fixing block, a second fixing hole arranged on the base opposite to the first fixing hole, and a fixing bolt passing through the first fixing hole and cooperating with the second fixing hole.

6. A reflow soldering fixture for pulse bracket capacitors according to claim 2, characterized in that: The clamping mechanism comprises two clamping blocks arranged at the sides of two brackets opposite to each other and a clamping member arranged between the clamping blocks and the base, wherein the clamping blocks are located above the fixing blocks.

7. A reflow soldering fixture for pulse bracket capacitors according to claim 6, characterized in that: The opposite surfaces of the connection frame and the capacitor body end are punched outward to form a lead groove for embedding the connection lead, and the opposite surfaces of the clamping block and the connection frame are formed with a limiting groove adapted to the lead groove.

8. A reflow soldering fixture for pulse bracket capacitors according to claim 6, characterized in that: The clamping member includes two first clamping holes arranged opposite to each other on both sides of the clamping block, two second clamping holes arranged on the base opposite to the two first clamping holes, positioning magnets respectively arranged in the two second clamping holes, and clamping bolts passing through the first clamping holes and fitting with the relative positioning magnets.

9. A reflow soldering fixture for pulse bracket capacitors according to claim 6, characterized in that: The bottom of the connection frame is formed with two supporting plates extending inwards for supporting the capacitor body, and the bottom of the clamping block is formed with two receiving plates extending inwards for receiving the two supporting plates respectively.

10. A reflow soldering fixture for pulse bracket capacitors according to claim 1, characterized in that: A plurality of weight-reducing holes are arranged at intervals on the base.

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