Tool clamp for transformer welding aid

Abstract

The utility model provides a tool clamp for transformer weld aiding, which comprises a vacuum conveyor, a flange plate, a negative pressure adjusting block, a pin positioning block, a fixing screw and an air adjusting screw, the air suction end of the vacuum conveyor is in screwed connection with the flange plate, and the flange plate is fixed on the left side of the negative pressure adjusting block through the fixing screw; the air adjusting screw is in threaded connection with the front side of the negative pressure adjusting block, an airtight cavity is formed in the negative pressure adjusting block, a groove for placing the multilayer chip transformer is formed in the upper side of the negative pressure adjusting block, a circle of hanging table for bearing the pin positioning block is arranged at the bottom of the groove, and the airtight cavity is communicated below the hanging table; the surface of the pin positioning block is provided with a pin positioning guide angular hole and a micro air suction groove; the negative pressure adjusting block is provided with a threaded hole and an air inlet hole; soldering tin is guided to be immersed between the lead pins and the chip transformers through negative pressure suction force, welding reliability is enhanced, pseudo soldering is reduced, and the pin insertion depth can be determined by replacing pin positioning blocks with different thicknesses.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding processing, in particular to a fixture for transformer welding. Background Art

[0002] Multilayer chip transformers are widely used in industries such as industry, agriculture, transportation, and urban communities. Their production process involves connecting several chip transformers in series after they are fabricated. These transformers are typically connected in series using leads as electrode terminals. To ensure reliable connection and good electrical conductivity, soldering is required to connect the leads to the chip transformers.

[0003] However, there are the following problems in the traditional welding process:

[0004] ① The pin positioning during the welding process is poor, the insertion depth of the lead pin cannot be controlled, and the pin is easily skewed.

[0005] ② The soldering condition between the chip transformers cannot be guaranteed, which easily leads to cold solder joints and bubbles, making the product unusable. Utility Model Content

[0006] To solve the above problems, the utility model provides a tooling fixture for transformer soldering, comprising: a vacuum conveyor, a flange, a negative pressure regulating block, a pin positioning block, and an air regulating assembly. The suction end of the vacuum conveyor is screwed together with the flange and fixed to the left side of the negative pressure regulating block. The negative pressure regulating block has an airtight chamber inside, and a groove for placing a multi-layer chip transformer is provided on the upper side. The bottom of the groove has a circle of hanging platforms for receiving the pin positioning block. The hanging platform is connected to the airtight chamber, and the air regulating assembly is arranged on the negative pressure regulating block.

[0007] Furthermore, a left hole tightly matched with the vacuum conveyor is provided on the left side of the negative pressure regulating block.

[0008] Furthermore, after the suction end of the vacuum conveyor is screwed together with the flange, the suction end should extend beyond the flange, and the extending portion of the suction end should cooperate with the left hole of the negative pressure regulating block.

[0009] Furthermore, the surface of the pin positioning block is provided with pin positioning guide belt corner holes, and the pin positioning guide belt corner holes correspond to the position and number of the pins of the multi-layer chip transformer.

[0010] Furthermore, a micro air suction groove is provided on the back of the pin positioning block. The micro air suction groove is in an I-shape and covers all the corner holes of the pin positioning guide strip on the back.

[0011] Furthermore, the air regulating assembly includes a threaded hole, an air inlet hole and an air regulating screw. The threaded hole is arranged on the front side of the negative pressure regulating block and connected to the airtight chamber for installing the air regulating screw. The air inlet hole is arranged on the right side of the negative pressure regulating block and connected to the threaded hole.

[0012] Furthermore, the length of the air regulating screw is longer than the depth from the hole opening in the threaded hole to the connecting point of the threaded hole.

[0013] Furthermore, the pin positioning block is placed behind the hanging platform of the negative pressure regulating block and is flush with the bottom of the groove.

[0014] Furthermore, the outer ring of the flange has multiple mounting holes, and the left side of the negative pressure regulating block has multiple threaded holes corresponding to the positions of the flange mounting holes, and the two are fixed by multiple fixing screws.

[0015] The utility model has the following beneficial effects:

[0016] 1) The negative pressure suction is used to guide the solder to penetrate between the lead pins and each chip transformer, thus enhancing the welding reliability and reducing the occurrence of cold solder joints;

[0017] 2) The pin insertion depth can be determined by replacing pin positioning blocks of different thicknesses;

[0018] 3) The appropriate adsorption and drainage effect can be obtained by adjusting the position of the air regulating screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 This is a schematic diagram of the utility model when processing a transformer product;

[0021] Figure 3 This is a structural diagram of a multi-layer SMD transformer product of the utility model;

[0022] Figure 4 This is a schematic structural diagram of the vacuum conveyor of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the flange of the utility model;

[0024] Figure 6 This is a structural diagram of the negative pressure regulating block of the utility model;

[0025] Figure 7 yes Figure 6 Schematic diagram of the structure in another direction;

[0026] Figure 8 This is a structural diagram of the front side of the pin positioning block of the utility model;

[0027] Figure 9 This is a structural diagram of the back side of the pin positioning block of the utility model;

[0028] Figure 10It is a structural diagram of the fixing screw of the utility model;

[0029] Figure 11 It is a structural schematic diagram of the gas regulating screw of the utility model.

[0030] In the figure: 1-vacuum conveyor; 2-flange; 3-negative pressure adjustment block; 4-pin positioning block; 5-fixing screw; 6-air adjustment screw; 7-air inlet. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Example 1

[0033] See also Figure 1-11 The utility model provides a technical solution: a tooling fixture for transformer soldering, comprising: a vacuum conveyor 1, a flange 2, a negative pressure regulating block 3, a pin positioning block 4 and an air regulating assembly. The suction end of the vacuum conveyor 1 is screwed together with the flange 2, and the flange 2 is fixed to the left side of the negative pressure regulating block 3 by a fixing screw 5. The air regulating screw 6 is threadedly connected to the front side of the negative pressure regulating block 3. The negative pressure regulating block 3 has an airtight chamber inside, and a groove for placing a multi-layer chip transformer is provided on the upper side. The bottom of the groove is provided with a hanging platform for receiving the pin positioning block 4. The hanging platform is connected to the airtight chamber, and the air regulating assembly is provided on the negative pressure regulating block 3.

[0034] A left hole tightly matched with the vacuum conveyor 1 is provided on the left side of the negative pressure regulating block 3 .

[0035] After the vacuum conveyor 1 is screwed together with the flange 2, the suction end should extend beyond the flange 2. The extended suction end should fit in the left hole of the negative pressure regulating block 3. This will prevent the vacuum conveyor 1 from leaking when it is pumping air. Figure 8 shown.

[0036] The pin positioning block 4 is provided with a pin positioning guide with a corner hole on its surface. The pin positioning guide with a corner hole facilitates the insertion of the lead pin. Figure 9 shown.

[0037] A micro suction groove is provided on the back of the pin positioning block 4. The micro suction groove is in an I-shape and covers all the pin positioning guide belt corner holes on the back. The micro suction groove connects the pin positioning guide belt corner holes and the airtight chamber.

[0038] The air regulating assembly includes a threaded hole, an air inlet 7 and an air regulating screw 6. The threaded hole is arranged on the front side of the negative pressure regulating block 3 and is connected to the airtight chamber for installing the air regulating screw 6. The air inlet 7 is arranged on the right side of the negative pressure regulating block 3 and is connected to the threaded hole. Figure 7 shown.

[0039] The length of the air regulating screw 6 is longer than the depth from the hole in the threaded hole to the connecting point of the threaded hole. By adjusting the screwing depth of the air regulating screw 6, the amount of air entering the air inlet is controlled, thereby adjusting the adsorption and drainage effect at the pin positioning block 4.

[0040] The pin positioning block 4 is placed on the hanging platform of the negative pressure regulating block 3 and is flush with the bottom of the slot, so that the multi-layer chip transformer product is placed stably.

[0041] There are four mounting holes on the outer ring of the flange 2, and the left side of the negative pressure regulating block 3 has four threaded holes corresponding to the mounting holes of the flange 2, and the two are fixed by four fixing screws 5. Figure 5-6 shown.

[0042] Multilayer chip transformer products: Use leads as electrode ends to connect multiple chip transformers in series, use solder to weld the leads and chip transformers together, and the series-connected leads serve as the pins of the multilayer chip transformer.

[0043] Working principle: Connect the compressed air pipe to the air inlet of the vacuum conveyor, connect the vacuum conveyor 1 to the flange 2 and the negative pressure regulating block 3, cover the pin positioning block 4 on the negative pressure regulating block 3, place the multi-layer chip transformer product on the negative pressure regulating block 3 hanging table and fit it with the pin positioning block 4, insert the lead pins into each pin hole of the transformer and guide the positioning by the holes set by the pin positioning block 4, the pin insertion depth can be determined by the thickness of the pin positioning block 4, adjust the air regulating screw 6 to achieve the appropriate adsorption and drainage effect, add liquid solder to the pin hole, and the solder is guided by the negative pressure suction to immerse between the lead pins and each chip transformer to complete the product welding.

[0044] The utility model can utilize negative pressure suction to guide solder to be immersed between lead pins and each chip transformer, thereby enhancing welding reliability and reducing the occurrence of cold solder joints. The pin insertion depth can be determined by replacing pin positioning blocks of different thicknesses, and the appropriate adsorption and drainage effect can be obtained by adjusting the position of the air regulating screw.

[0045] The above disclosure is only a specific embodiment of the present invention, but the present invention is not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A fixture for transformer soldering, characterized by: include: A vacuum conveyor (1), a flange (2), a negative pressure regulating block (3), a pin positioning block (4) and an air regulating assembly. After the air suction end of the vacuum conveyor (1) is screwed and connected to the flange (2), it is fixed to the left side of the negative pressure regulating block (3). The negative pressure regulating block (3) has an airtight chamber inside, a groove for placing a multilayer chip transformer is provided on the upper side, and a hanging platform for receiving the pin positioning block (4) is provided at the bottom of the groove. The hanging platform is connected to the airtight chamber below, and the air regulating assembly is arranged on the negative pressure regulating block (3).

2. The fixture for transformer soldering according to claim 1, characterized in that: The left side of the negative pressure regulating block (3) is provided with a left side hole which is tightly matched with the vacuum conveyor (1).

3. The fixture for transformer soldering according to claim 2, characterized in that: After the suction end of the vacuum conveyor (1) is screwed together with the flange (2), the suction end should extend beyond the flange (2), and the extended portion of the suction end is matched with the left hole of the negative pressure regulating block (3).

4. The fixture for transformer soldering according to claim 1, characterized in that: The pin positioning block (4) is provided with pin positioning guide belt corner holes on its surface, and the pin positioning guide belt corner holes correspond to the positions and numbers of the pins of the multilayer chip transformer.

5. The fixture for transformer soldering according to claim 4, characterized in that: The pin positioning block (4) is provided with a micro air suction groove on the back side. The micro air suction groove is in an I-shape and covers all the pin positioning guide belt corner holes on the back side.

6. The fixture for transformer soldering according to claim 1, characterized in that: The air regulating assembly comprises a threaded hole, an air inlet hole (7) and an air regulating screw (6); the threaded hole is arranged on the front side of the negative pressure regulating block (3) and communicates with the airtight chamber for installing the air regulating screw (6); the air inlet hole (7) is arranged on the right side of the negative pressure regulating block (3) and communicates with the threaded hole.

7. The fixture for transformer soldering according to claim 6, characterized in that: The length of the air regulating screw (6) is longer than the depth from the hole opening in the threaded hole to the connecting point of the threaded hole.

8. The fixture for transformer soldering according to claim 1, characterized in that: The pin positioning block (4) is placed behind the hanging platform of the negative pressure regulating block (3) and is flush with the bottom of the groove.

9. The fixture for transformer soldering according to claim 1, characterized in that: The outer ring of the flange (2) has a plurality of mounting holes, and the left side of the negative pressure regulating block (3) has a plurality of threaded holes corresponding to the positions of the mounting holes of the flange (2), and the two are fixed by a plurality of fixing screws (5).

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