A soldering flux feeding device for inductor production

Abstract

The utility model discloses a kind of soldering flux feeding devices for inductance production, it is related to electronic component production equipment technical field.The utility model includes heating groove, pivot rod and liquid level control component, the opening of heating groove is upward, the both ends of pivot rod are rotatably installed in the inboard of heating groove, pivot rod outside lateral array fixed sleeve is connected with a group of axle sleeve, a group of sponge strips is arranged in the lateral array of axle sleeve outer wall, and liquid level control component is arranged in the outside one end of heating groove and is communicated with heating groove.The utility model adds soldering flux to heating groove, and inductance is stretched to heating groove by grabbing arm, so that the pin surface of inductance is contacted with sponge strip, so that the pin surface of inductance is coated with soldering flux, to avoid inductance side being coated with soldering flux;The liquid level height of soldering flux in heating groove is controlled by liquid level control component, so that sponge strip can absorb soldering flux in heating groove after being rotated downward.

Description

Technical Field

[0001] This utility model belongs to the technical field of electronic component production equipment, and in particular relates to a flux feeding device for inductor production. Background Technology

[0002] After inductor production, before soldering the inductor leads to the circuit board, a layer of flux needs to be applied to the inductor lead surfaces to reduce the surface tension of the molten solder, paving the way for smooth solder flow and wetting. In automated flux application, the inductor is first fixed to a gripping arm, which then extends the inductor into a heated tank containing flux, bringing the inductor lead surfaces into contact with a sponge sheet in the heated tank. The sponge sheet then applies the flux to the inductor lead surfaces. However, this flux application method has some shortcomings... The problem is that after the gripping arm contacts the inductor with the sponge, it will press the sponge into a groove. The high-temperature flux adsorbed in the sponge will prevent the groove from returning to its flat state in a short time. Therefore, when applying flux to the inductor later, the lead surface of the inductor needs to contact the groove surface of the sponge to apply the flux. This will also cause the side of the inductor to contact the sponge, thus applying flux to the side of the inductor. Over long-term use, the residual active material may cause electrochemical migration, leading to a decrease in insulation resistance or even a short circuit.

[0003] To address these issues, we provide a flux feeding device for inductor production. Utility Model Content

[0004] The purpose of this invention is to provide a flux feeding device for inductor production. A rotating shaft is horizontally rotated within a heating tank. A set of shaft sleeves are axially arrayed and fixed to the outer side of the rotating shaft. A set of sponge strips are arranged circumferentially on the outer wall of the shaft sleeves. Prepared flux is added to the heating tank, which heats the flux to a molten state. A gripping arm extends the inductor into the heating tank, bringing the inductor's lead surface into contact with the sponge strips, thus coating the inductor's lead surface with flux while preventing flux from being applied to the inductor's sides. A liquid level control component is installed on one side of the heating tank. After each row of sponge strips has finished coating the inductor with flux, the rotating shaft rotates, causing another row of sponge strips to rise and immerse the coated sponge strips in the flux in the heating tank. The liquid level control component controls the flux level in the heating tank, allowing the sponge strips to absorb flux from the heating tank as they rotate downwards.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a flux feeding device for inductor production, including a heating tank, a rotating shaft, and a liquid level control component. The opening of the heating tank faces upward, and the two ends of the rotating shaft are rotatably installed on the inner side of the heating tank. A set of shaft sleeves are fixedly sleeved on the outer side of the rotating shaft in an axial array. A set of sponge strips are arranged in an axial array on the outer wall of the shaft sleeves. The liquid level control component is located at one end of the outer side of the heating tank and is connected to the heating tank.

[0007] A further feature of this invention is that a set of sleeves is fixedly arranged in a circumferential array on the outer wall of the shaft sleeve, and a sleeve end cap is fixedly sleeved at the end of the sleeve away from the shaft sleeve. A sponge strip passes through the sleeve end cap, and a bottom end sleeve is fixedly sleeved at the bottom end of the sponge strip. The bottom end sleeve is slidably sleeved in the sleeve, and the end face of the bottom end sleeve is in contact with the inner end face of the sleeve end cap.

[0008] A further feature of this invention is that a compression spring is fitted inside the sleeve, with both ends of the compression spring pressing against the bottom surface of the sleeve and the bottom surface of the bottom sleeve, respectively.

[0009] A further feature of this invention is that bearings are fixedly sleeved on the outer sides of both ends of the rotating shaft, and the two bearings are respectively sleeved through the side plates of the heating tank. One end of the rotating shaft passes through the side plate of the heating tank and is connected to the output shaft of the servo motor via a belt.

[0010] A further feature of this invention is that the liquid level control component includes a connecting funnel, an injection cylinder, and a pushing cylinder. Two through holes are vertically arrayed on one side plate of the heating tank. The through hole at the upper end of the side plate of the heating tank is connected to the side of the connecting funnel. The lower end of the connecting funnel is connected to the side wall of the injection cylinder. One end of the injection cylinder is connected to the through hole at the lower end of the side plate of the heating tank through a pipe. The pushing cylinder is located at one end of the injection cylinder. A pushing piston is fixedly sleeved on the telescopic end of the pushing cylinder. The pushing piston is slidably sleeved inside the injection cylinder.

[0011] A further feature of this invention is that a funnel cover is fixedly placed on the upper end of the funnel, and a vent hole is provided through the surface of the funnel cover.

[0012] A further feature of this invention is that a suction check valve is provided in the lower end pipe of the connecting funnel, with the outlet end of the suction check valve facing the injection cylinder, and a discharge check valve is provided in the pipe connecting the injection cylinder and the through hole on the side plate of the heating tank, with the one-way outlet end of the discharge check valve facing the heating tank.

[0013] This utility model has the following beneficial effects:

[0014] This invention involves horizontally rotating a shaft rod within a heating tank. A set of shaft sleeves are axially arrayed and fixedly fitted onto the outer side of the shaft rod. A set of sponge strips are arranged circumferentially on the outer wall of the shaft sleeves. A prepared flux is added to the heating tank, which heats the flux to a molten state. A gripping arm extends the inductor into the heating tank, bringing the lead surface of the inductor into contact with the sponge strips. This ensures that the lead surface of the inductor is coated with flux, preventing the sides of the inductor from being coated with flux.

[0015] This invention features a liquid level control component on one side of the heating tank. After each row of sponge strips has finished coating the inductor flux, the rotating shaft rotates to move another row of sponge strips upwards, immersing the coated sponge strips into the flux in the heating tank. The liquid level control component controls the flux level in the heating tank, allowing the sponge strips to absorb the flux in the heating tank after rotating downwards. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0017] Figure 1 This is a schematic diagram of a flux feeding device for inductor production.

[0018] Figure 2 This is an exploded view of the sponge strip and the shaft sleeve.

[0019] Figure 3 This is a schematic diagram of the structure of the shaft and bearing.

[0020] Figure 4 This is an exploded view of the liquid level control component and the heating tank.

[0021] Figure 5 This is a side sectional view of the liquid level control assembly.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1-Heating tank, 101-Through hole, 2-Rotating shaft, 201-Shaft sleeve, 201a-Sponge strip, 201a-1-Bottom sleeve, 201b-Sleeve, 201b-1-Cylinder end cap, 201b-2-Compression spring, 202-Bearing, 3-Level control assembly, 301-Connecting funnel, 301a-Funnel cover, 301a-1-Ventilation hole, 301b-Suction check valve, 302-Injection cylinder, 302a-Discharge check valve, 303-Push cylinder, 303a-Push piston. Detailed Implementation

[0024] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings and embodiments. Example 1

[0025] Please see Figures 1 to 3 This utility model relates to a flux feeding device for inductor production, comprising a heating tank 1, a rotating shaft 2, and a liquid level control assembly 3. A rotating shaft 2 is horizontally rotated within the heating tank 1. A set of shaft sleeves 201 are axially arrayed and fixedly fitted onto the outer side of the rotating shaft 2. A set of sponge strips 201a are circumferentially arrayed on the outer wall of the shaft sleeves 201. Prepared flux is added to the heating tank 1, which heats the flux to a molten state. A gripping arm extends the inductor into the heating tank 1, bringing the inductor's lead surface into contact with the sponge strips 201a. Contact is made so that the lead surface of the inductor is coated with flux, avoiding the side surface of the inductor being coated with flux; by setting a liquid level control component 3 on one side of the heating tank 1, after each column of sponge strips 201a has finished coating the inductor with flux, the rotating shaft 2 rotates to make another column of sponge strips 201a move upward, and immerse the coated sponge strips 201a into the flux in the heating tank 1. The liquid level control component 3 controls the height of the flux in the heating tank 1, so that the sponge strips 201a can absorb the flux in the heating tank 1 after rotating downward.

[0026] Specifically, the opening of the heating tank 1 faces upward, and the two ends of the rotating shaft 2 are rotatably installed on the inner side of the heating tank 1. A set of shaft sleeves 201 are fixedly sleeved on the outer side of the rotating shaft 2 in an axial array. A set of sponge strips 201a are arranged in an axial array on the outer wall of the shaft sleeves 201. The liquid level control component 3 is located at one end of the outer side of the heating tank 1 and is connected to the heating tank 1.

[0027] Furthermore, a set of sleeves 201b are fixedly arranged in a circumferential array on the outer wall of the shaft sleeve 201. A cylindrical end cap 201b-1 is fixedly sleeved at the end of the sleeve 201b away from the shaft sleeve 201. A sponge strip 201a passes through the cylindrical end cap 201b-1. A bottom end sleeve 201a-1 is fixedly sleeved at the bottom end of the sponge strip 201a. The bottom end sleeve 201a-1 is slidably sleeved in the sleeve 201b. The end face of the bottom end sleeve 201a-1 is attached to the inner end face of the cylindrical end cap 201b-1.

[0028] Furthermore, a compression spring 201b-2 is fitted inside the sleeve 201b. The two ends of the compression spring 201b-2 press against the bottom surface of the sleeve 201b and the bottom surface of the bottom sleeve 201a-1, respectively. The compression spring 201b-2 pushes the sponge strip 201a out of the sleeve 201b, so that the sponge strip 201a can make full contact with the lead surface of the inductor.

[0029] Furthermore, bearings 202 are fixedly sleeved on the outer sides of both ends of the rotating shaft 2. The two bearings 202 are respectively sleeved through the side plates of the heating tank 1. One end of the rotating shaft 2 passes through the side plate of the heating tank 1 and is connected to the output shaft of the servo motor via a belt.

[0030] The operation process in this embodiment is as follows:

[0031] When applying flux to the lead surfaces of the inductor, the gripping arm extends the inductor into the heating tank 1, bringing the lead surfaces of the inductor into contact with the sponge strip 201a. This ensures that the lead surfaces of the inductor are coated with flux, preventing the sides of the inductor from being coated with flux. After the lead surfaces of the inductor are coated with flux, the rotating shaft 2 rotates, transferring the sponge strip 201a with flux adsorbed at its lower end to the upper part, and then transferring the upper sponge strip 201a to the flux in the heating tank 1, thereby applying flux to the lead surfaces of the next batch of inductors. Example 2

[0032] Please see Figures 1 to 5 Based on Embodiment 1, the liquid level control component 3 includes a connecting funnel 301, an injection cylinder 302, and a pushing cylinder 303. Two through holes 101 are vertically arrayed on the side of the heating tank 1, with the upper through hole 101 connected to the connecting funnel 301 and the lower end of the connecting funnel 301 connected to the side wall of the injection cylinder 302. A pushing piston 303a is fixedly sleeved at the telescopic end of the pushing cylinder 303 and slidably sleeved in the injection cylinder 302. The pushing cylinder 303 drives the pushing piston 303a to slide in the injection cylinder 302, thereby injecting flux from the injection cylinder 302 into the heating tank 1. When the flux level in the heating tank 1 is too high, the flux flows from the upper through hole 101 into the connecting funnel 301, thereby achieving the technical effect of flux level control in the heating tank 1.

[0033] Specifically, two through holes 101 are vertically arrayed on one side plate of the heating tank 1. The through hole 101 at the upper end of the side plate of the heating tank 1 is connected to the side of the connecting funnel 301. The lower end of the connecting funnel 301 is connected to the side wall of the injection cylinder 302. One end of the injection cylinder 302 is connected to the through hole 101 at the lower end of the side plate of the heating tank 1 through a pipe. The pushing cylinder 303 is set at one end of the injection cylinder 302. The extension end of the pushing cylinder 303 is fixedly sleeved with a pushing piston 303a. The pushing piston 303a is slidably sleeved inside the injection cylinder 302.

[0034] Furthermore, a funnel cover 301a is fixedly placed on the upper end of the funnel 301, and a vent hole 301a-1 is provided through the surface of the funnel cover 301a.

[0035] Furthermore, a suction check valve 301b is installed in the lower end pipe of the connecting funnel 301, with the outlet end of the suction check valve 301b facing into the injection cylinder 302. A discharge check valve 302a is installed in the pipe connecting the injection cylinder 302 and the through hole 101 on the side plate of the heating tank 1, with the one-way outlet end of the discharge check valve 302a facing into the heating tank 1.

[0036] The operation process in this embodiment is as follows:

[0037] When the flux level in heating tank 1 is too high, the excess flux enters the connecting funnel 301 through the through hole 101 above the side plate of heating tank 1, preventing the flux level in heating tank 1 from being too high and submerging the rotating shaft 2. When the flux level in heating tank 1 is too low, the push cylinder 303 drives the push piston 303a to slide in the injection cylinder 302, injecting the flux in the injection cylinder 302 into the heating tank. During this process, the discharge check valve 302a opens and the suction check valve 301b closes to prevent the flux in the injection cylinder 302 from being injected into the connecting funnel 301 above. The push cylinder 303 pulls the push piston 303a to draw the flux in the connecting funnel 301 into the injection cylinder 302. During this process, the discharge check valve 302a closes and the suction check valve 301b opens to prevent the flux in heating tank 1 from being drawn into the injection cylinder 302.

Claims

1. A flux feeding device for inductor production, comprising a heating tank (1), a rotating shaft (2), and a liquid level control assembly (3), characterized in that: The opening of the heating tank (1) faces upward. The two ends of the rotating shaft (2) are rotatably installed on the inner side of the heating tank (1). A set of shaft sleeves (201) are fixedly sleeved on the outer side of the rotating shaft (2). A set of sponge strips (201a) are arranged on the outer side wall of the shaft sleeve (201). The liquid level control component (3) is located at one end of the outer side of the heating tank (1) and communicates with the heating tank (1).

2. The flux feeding device for inductor production according to claim 1, characterized in that: A set of sleeves (201b) are fixedly arranged in a circumferential array on the outer wall of the shaft sleeve (201). A cylindrical end cap (201b-1) is fixedly sleeved at the end of the sleeve (201) away from the shaft sleeve (201). The sponge strip (201a) passes through the cylindrical end cap (201b-1). A bottom end sleeve (201a-1) is fixedly sleeved at the bottom end of the sponge strip (201a). The bottom end sleeve (201a-1) is slidably sleeved in the sleeve (201b). The end face of the bottom end sleeve (201a-1) is attached to the inner end face of the cylindrical end cap (201b-1).

3. The flux feeding device for inductor production according to claim 2, characterized in that: A compression spring (201b-2) is fitted inside the sleeve (201b), and the two ends of the compression spring (201b-2) abut against the bottom surface of the sleeve (201b) and the bottom surface of the bottom sleeve (201a-1), respectively.

4. The flux feeding device for inductor production according to claim 3, characterized in that: Bearings (202) are fixedly sleeved on both outer sides of the rotating shaft (2). The two bearings (202) are respectively sleeved in the side plates of the heating tank (1). One end of the rotating shaft (2) passes through the side plate of the heating tank (1) and is connected to the output shaft of the servo motor via a belt.

5. The flux feeding device for inductor production according to claim 1, characterized in that: The liquid level control component (3) includes a connecting funnel (301), an injection cylinder (302), and a push cylinder (303). Two through holes (101) are vertically arrayed on one side plate of the heating tank (1). The through hole (101) at the upper end of the side plate of the heating tank (1) is connected to the side of the connecting funnel (301). The lower end of the connecting funnel (301) is connected to the side wall of the injection cylinder (302). One end of the injection cylinder (302) is connected to the through hole (101) at the lower end of the side plate of the heating tank (1) through a pipe. The push cylinder (303) is set at one end of the injection cylinder (302). The extension end of the push cylinder (303) is fixedly sleeved with a push piston (303a). The push piston (303a) is slidably sleeved inside the injection cylinder (302).

6. The flux feeding device for inductor production according to claim 5, characterized in that: The upper end of the connecting funnel (301) is fixedly covered with a funnel cover (301a), and a vent hole (301a-1) is opened through the surface of the funnel cover (301a).

7. A flux feeding device for inductor production according to claim 6, characterized in that: A suction check valve (301b) is provided in the lower end pipe of the connecting funnel (301), with the outlet end of the suction check valve (301b) facing the injection cylinder (302). A discharge check valve (302a) is provided in the pipe connecting the injection cylinder (302) and the through hole (101) on the side plate of the heating tank (1), with the one-way outlet end of the discharge check valve (302a) facing the heating tank (1).

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