A transformer terminal soldering tin blocking mechanism

Abstract

The utility model discloses a kind of transformer terminal welding tin blocking mechanism including welding arm, fixture clamping groove and tin blocking bead, two welding arms are oppositely arranged, fixture clamping groove is set in the inside of two welding arms and fixture clamping groove notch is upward, connecting rod is installed between fixture clamping groove and welding arm, fixture is set between fixture clamping groove, two ends of fixture are clamped in fixture clamping groove, tin blocking bead is set between the bottom of two fixture clamping grooves, tin blocking bead covers up wire package;When tin is carried out on pin, avoid splashing tin bead to fall on wire package and damage paint, always tension tin blocking bead, overcome tin blocking bead thermal expansion and cold shrink.

Description

Technical Field

[0001] This utility model relates to the field of circuit transformers, specifically to a transformer terminal solder blocking mechanism that prevents solder balls from burning through the wire sheath when soldering pins. Background Technology

[0002] After the transformer coil is wound, the transformer leads need to be tinned. The current tinning method involves clamping multiple transformers onto a fixture. During soldering, the two ends of the fixture are placed in clamping slots, which are respectively mounted on two welding arms on the left and right sides. Each welding arm is equipped with a lifting component, which lowers the welding arm along with the fixture, while the transformer leads are inserted into the molten solder to achieve lead soldering. However, the above method has significant drawbacks. Due to the high temperature of the molten solder, solder beads are generated when the leads are lowered and soldered. These solder beads can splatter onto the coil, potentially burning through the coil's enamel coating and causing it to fail the subsequent withstand voltage test. A device is needed to prevent solder beads from splattering onto the coil. Summary of the Invention

[0003] To address the shortcomings of the existing technology, this utility model proposes a transformer terminal solder blocking mechanism, which helps to prevent solder balls from splashing onto the coil when soldering the pins, thus avoiding damage to the coil enamel.

[0004] To achieve the above objectives, the present invention provides a solution for a transformer terminal welding solder blocking mechanism, comprising welding arms, fixture slots, and solder blocking beads. Two welding arms are arranged opposite to each other, and fixture slots are provided on the inner sides of the two welding arms with the slot openings facing upwards. A connecting rod is installed between the fixture slots and the welding arms, and a fixture is provided between the fixture slots, with both ends of the fixture locked in the fixture slots. Solder blocking beads are provided between the bottoms of the two fixture slots, and the solder blocking beads cover the coil.

[0005] Preferably, an elastic buffer mechanism is provided between one set of welding arms and the connecting rod. The elastic buffer mechanism includes a fixed seat, a sliding seat, a guide post, and a lifting spring. The fixed seat is installed on the welding arm. A guide post is installed on the front of the fixed seat. A sliding sleeve is fitted on the guide post. The sliding sleeve slides on the guide post. A sliding seat is installed on the sliding sleeve. The sliding seat is connected to the connecting rod. A lifting spring is fitted on the guide post. The lifting spring lifts the sliding sleeve outward, thereby tightening the solder-blocking beads.

[0006] Preferably, a slotted hole is provided on the sliding seat, and a guide positioning bolt is inserted into the slotted hole. The tail of the guide positioning bolt extends into the fixed seat, and the nut of the guide positioning bolt presses against the sliding seat, thereby locking the sliding seat.

[0007] Preferably, the solder-blocking bead is a metal plate, and both ends of the solder-blocking bead are detachably installed at the bottom of the fixture slot.

[0008] Preferably, the solder-blocking bead is formed by hinged two solder-blocking plates. Bolt holes are opened on both sides of each solder-blocking plate. An adjusting block is fixed at the bottom of each fixture slot. An oblong hole is opened on the adjusting block. A locking bolt is inserted into each oblong hole. The end of the locking bolt is threaded into the bolt hole of the solder-blocking plate. The nut of the locking bolt and the solder-blocking plate are pressed on the adjusting block. The width of the solder-blocking plate covering the coil is adjusted by the locking bolt, thus achieving width adjustment.

[0009] Compared with the prior art, the advantages of this utility model are: 1. When tinning the pins, it avoids splattered solder beads falling onto the coil and damaging the enamel; 2. It keeps the solder-blocking beads taut at all times, overcoming the thermal expansion and contraction of the solder-blocking beads; 3. The width of the solder-blocking beads can be finely adjusted, so that it can be finely adjusted according to the width of the coil. Attached Figure Description

[0010] Figure 1 This is a front view of Embodiment 1 of the present utility model.

[0011] Figure 2 This is a bottom view of Embodiment 1 of the present utility model.

[0012] Figure 3 This is a schematic diagram of the elastic buffer mechanism in Embodiment 1 of this utility model.

[0013] Figure 4 This is an exploded view of the elastic buffer mechanism according to Embodiment 1 of this utility model.

[0014] Figure 5 This is a schematic diagram of the fixture slot in Embodiment 1 of this utility model.

[0015] Figure 6 This is a schematic diagram of the fixture slot and solder-blocking bead in Embodiment 2 of this utility model.

[0016] Figure 7 This is a schematic diagram of the tin bead and transformer coil in Embodiment 2 of this utility model.

[0017] Among them, 1. Welding arm, 2. Fixture slot, 3. Solder-blocking bead, 4. Connecting rod, 5. Fixture, 6. Elastic buffer mechanism, 7. Fixed seat, 8. Sliding seat, 9. Guide column, 10. Lifting spring, 11. Sliding sleeve, 12. Waist-shaped hole, 13. Guide positioning bolt, 14. Solder-blocking plate, 15. Adjusting block, 16. Adjusting hole, 17. Locking bolt, 18. Welding left arm, 19. Welding right arm, 20. Bolt hole. Detailed Implementation

[0018] The present invention will now be further described with reference to the accompanying drawings.

[0019] Example 1: As Figure 1-5 As shown, a transformer terminal soldering tin-blocking mechanism includes a soldering arm 1, a fixture 5 slot 2, and tin-blocking beads 3. Two soldering arms 1 are arranged opposite each other. A fixture 5 slot 2 is provided on the inner side of each soldering arm 1, with the slot opening facing upwards (the fixture 5 slot 2 is a rectangular block with a groove at the top for inserting into the fixture 5). A connecting rod 4 is installed between the fixture 5 slot 2 and the soldering arm 1. The outer side of the fixture 5 slot 2 is fastened to the connecting rod 4 with bolts. The connecting rod 4 is vertically oriented, and its top is mounted on the soldering arm 1. A fixture 5 is provided between the slots 2 of the fixture 5. Both ends of the fixture 5 are locked in the slots 2 of the fixture 5. A connecting rod 4 is installed between the slots 2 of the fixture 5 and the welding arm 1. A solder-blocking bead 3 is provided between the bottoms of the two slots 2 of the fixture 5. The solder-blocking bead 3 blocks the coil. Before welding, the transformer is attached to the fixture 5 and both ends of the fixture 5 are placed in the slots 2 of the fixture 5 and locked. In this way, the solder-blocking bead 3 blocks the bottom of the transformer coil. The splashing solder balls are blocked by the coil and prevented from splashing onto the coil.

[0020] Welding arm 1 is divided into a left welding arm 18 and a right welding arm 19. The right welding arm 19 is connected to the top of the connecting rod 4 by bolts. An elastic buffer mechanism 6 is provided between the left welding arm 18 and the connecting rod 4. The elastic buffer mechanism 6 includes a fixed seat 7, a sliding seat 8, a guide post 9, and a lifting spring 10. The left side of the fixed seat 7 is bolted to the left welding arm 18. A guide post 9 is installed on the front of the fixed seat 7 (there are two guide posts 9, arranged horizontally and vertically, with both ends of the guide posts 9 fixed to the fixed seat 7 by welding). A sliding sleeve 11 is fitted on the guide post 9, and the sliding sleeve 11 slides left and right on the guide post 9. A sliding seat 8 is installed on the sliding sleeve 11 (that is, the sliding sleeve 11 is fixed to the sliding seat 8 by welding, so the sliding seat 8 moves left and right along the guide post 9). The sliding seat 8 is connected to the connecting rod 4 by bolts. A lifting spring 10 is fitted onto the guide post 9. The lifting spring 10 is located at the right end of the guide post 9 and rests against the right end face of the fixed seat 7. The left end of the lifting spring 10 rests against the sliding sleeve 11. The lifting spring 10 lifts the sliding sleeve 11 to the right, thus tightening the solder-blocking bead 3. Since the solder-blocking bead 3 is close to the molten solder, it expands due to heat during operation, thus increasing its length. When the positions of the two fixtures 5 and the slots 2 remain unchanged... When the solder bead 3 bends downwards, there is a gap between the solder bead 3 and the bottom of the coil. This can cause solder balls to splash onto the coil through the gap between the solder bead 3 and the coil, damaging the coil's coating. The connecting rod 4 on the left side of this application can slide left and right. When the solder bead 3 expands, it is pushed to the left by the lifting spring 10, thus tightening the solder bead 3 and making it fit against the bottom of the coil. This can effectively prevent solder balls from splashing onto the coil.

[0021] A horizontally shaped oblong hole 12 is provided on the sliding seat 8. A guide positioning bolt 13 is inserted into the oblong hole 12. The tail of the guide positioning bolt 13 extends into the fixed seat 7 and the guide positioning bolt 13 is threadedly engaged with the fixed seat 7. The nut of the guide positioning bolt 13 presses on the sliding seat 8, thereby locking the sliding seat 8. When there is no need to move the sliding seat 8, the sliding seat 8 is locked in this way.

[0022] The solder blocking bead 3 is a flat plate. Both ends of the solder blocking bead 3 are detachably installed on the bottom of the slot 2 of the fixture 5. Bolt holes 20 are opened at the bottom of the left and right ends of the solder blocking bead 3. The bolts pass through the bolt holes 20 at the bottom of the solder blocking bead and are threaded into the slot 2 of the fixture 5, thus realizing the installation of the solder blocking bead 3 on the slot 2 of the fixture 5.

[0023] Example 2: Figure 6-7As shown, except for the following structural differences from Embodiment 1, the other structures are the same as in Embodiment 1: the solder-blocking bead 3 is formed by hinged two solder-blocking plates 14. Bolt holes 20 are opened on both sides of each solder-blocking plate. An adjusting block 15 is fixed to the bottom of the slot 2 of each fixture 5 by welding. A longitudinal elongated adjusting hole 16 is opened on the adjusting block 15. Two locking bolts 17 are inserted into each elongated adjusting hole 16. The end of each locking bolt 17 is threaded into the bolt hole 20 of the solder-blocking plate to lock it in place. The nut of bolt 17 presses against the solder baffle 14 on the adjusting block 15, thus locking the solder baffle 14. The width of the solder baffle 14 covering the coil can be adjusted by the locking bolt 17, thus achieving width adjustment. When it is necessary to adjust the width of the solder baffle bead 3, tighten the locking bolt 17, so that the locking bolt 17 can slide in the elongated adjusting hole 16, thus adjusting the folding angle of the two solder baffles 14, thereby changing the width. The width of the solder baffle bead 3 can be adjusted according to the width of the coil.

Claims

1. A solder-blocking mechanism for transformer terminal welding, comprising welding arms, fixture slots, and solder-blocking beads, wherein two welding arms are arranged opposite to each other, fixture slots are provided on the inner sides of the two welding arms with the slot openings facing upwards, a connecting rod is installed between the fixture slots and the welding arms, and a fixture is provided between the fixture slots, with both ends of the fixture being engaged in the fixture slots, characterized in that, Solder-blocking beads are provided between the bottom of the two fixture slots to block the coil.

2. The transformer terminal welding solder blocking mechanism according to claim 1, characterized in that, An elastic buffer mechanism is provided between one set of welding arms and the connecting rod. The elastic buffer mechanism includes a fixed seat, a sliding seat, a guide post, and a lifting spring. The fixed seat is installed on the welding arm. A guide post is installed on the front of the fixed seat. A sliding sleeve is fitted on the guide post. The sliding sleeve slides on the guide post. A sliding seat is installed on the sliding sleeve. The sliding seat is connected to the connecting rod. A lifting spring is fitted on the guide post. The lifting spring lifts the sliding sleeve outward, thus tightening the solder-blocking beads.

3. The transformer terminal solder blocking mechanism according to claim 2, characterized in that, A slotted hole is made in the sliding seat, and a guide positioning bolt is inserted into the slotted hole. The tail of the guide positioning bolt extends into the fixed seat, and the nut of the guide positioning bolt presses on the sliding seat, thus locking the sliding seat.

4. The transformer terminal welding solder blocking mechanism according to claim 3, characterized in that, The solder-blocking bead is a metal plate, and its two ends are detachably installed at the bottom of the fixture slot.

5. A transformer terminal solder blocking mechanism according to claim 1 or 3, characterized in that, The solder-blocking bead is made of two solder-blocking plates hinged together. Bolt holes are opened on both sides of each solder-blocking plate. An adjusting block is fixed at the bottom of each fixture slot. An oblong hole is opened on the adjusting block. A locking bolt is inserted into each oblong hole. The end of the locking bolt is threaded into the bolt hole of the solder-blocking plate. The nut of the locking bolt and the solder-blocking plate are pressed on the adjusting block. The width of the solder-blocking plate covering the coil is adjusted by the locking bolt, thus achieving width adjustment.

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