A flux supply device for chip inductor production and its use method

Abstract

This invention provides a flux supply device and its usage method for surface mount inductor production, comprising a material box, a liquid storage assembly, a sealing structure, and a piston assembly. The top of the material box is open, and the liquid storage assembly is installed on the inner side of the top of the material box, with a sponge block for accumulating flux on the liquid storage assembly. The piston assembly is located inside the material box, and the piston head of the piston assembly moves vertically against the inner wall of the material box. The sealing structure is installed on the top of the material box to seal the open opening of the material box. The sealing structure and the piston assembly are in a transmission cooperation. When the sealing structure releases the seal on the open opening, the piston assembly moves downward synchronously, so that the internal flux is below the liquid storage assembly. When the sealing structure returns to its original position to seal the open opening, the piston assembly moves upward synchronously, so that the internal flux comes into contact with the liquid storage assembly. This effectively prevents flux evaporation and reduces waste. Furthermore, the contact between the sponge block and the flux can be adjusted dynamically to prevent excessive flux adhesion that could affect product quality.

Description

Technical Field

[0001] This invention relates to the field of surface mount inductor soldering equipment, and more specifically, to a flux supply device for surface mount inductor production and its method of use. Background Technology

[0002] Tin immersion is a common process in the production of surface mount inductors. It involves coating the metal surface with a layer of tin to prevent oxidation and facilitate soldering. Currently, the flux immersion method used in the production of surface mount inductors is to immerse several rows of inductors in flux at the same time. A robotic arm then immerses the arranged rows of inductors into the flux bath at once, and then removes them and immerses them in molten tin.

[0003] However, most current flux baths have an open structure and are close to the solder bath. The heat diffused from the solder bath will cause the surrounding temperature to rise, accelerating the evaporation of flux and causing waste. In addition, the sponge block on the current flux bath is immersed in the flux as a whole. When the workpiece is dipped in flux, some of the workpiece may be directly immersed in the flux, resulting in flux residue or excessive solder adhesion. This affects the overall quality and specification consistency of the product, so it needs to be improved. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a flux supply device and its usage method for surface mount inductor production, which can effectively prevent flux evaporation and reduce waste; and can adjust the contact between the sponge block and the flux accordingly to prevent excessive flux from adhering and affecting product quality.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] This invention provides a flux supply device for surface mount inductor production, comprising a material box, a liquid storage assembly, a sealing structure, and a piston assembly. The top of the material box is open, and the liquid storage assembly is installed on the inner side of the top of the material box. The liquid storage assembly has a sponge block for accumulating flux, the top surface of which is lower than the top opening of the material box. The piston assembly is located inside the material box, and its piston head moves vertically against the inner wall of the material box, forming a liquid storage chamber with an adjustable size at the top position. The sealing structure is installed on the top of the material box to seal the open opening. The sealing structure and the piston assembly are in a driving relationship. When the sealing structure releases the seal on the open opening, the piston assembly moves downwards synchronously, bringing the internal flux below the liquid storage assembly. When the sealing structure returns to its original position to seal the open opening, the piston assembly moves upwards synchronously, bringing the internal flux into contact with the liquid storage assembly.

[0007] In a preferred embodiment of the present invention, the liquid storage assembly includes a tray, which is fixedly installed inside the top opening of the material box by bolts; a sponge block is snapped onto the top of the tray, and the top surface of the tray and the sponge block is lower than the top surface of the material box; the bottom of the tray is provided with a first perforation for flux flow.

[0008] In a preferred embodiment of the present invention, the piston assembly includes a roller, a first pusher, and a piston head. The first pusher is a frame-like structure with open ends and bottom. The shape of the first pusher is adapted to the internal shape of the material box. The piston head is fixedly mounted on the top of the first pusher and slides in a sealed manner against the inner wall of the material box. The roller is rotatably mounted between the two side walls of the material box, and the first pusher is positioned above the roller. A first tooth is fixedly provided on one inner wall of the first pusher in a vertical direction. A second tooth is correspondingly provided on the outer wall of the roller. The roller and the first pusher are driven by the meshing of the teeth. The first pusher moves up and down with the rotation of the roller. The sealing structure is connected to the roller drive.

[0009] In a preferred embodiment of the present invention, an extension block is fixedly provided on the top of the side of the material box away from the push part, and a clamping cavity is provided inside the extension block. The clamping cavity is connected to the inside of the material box and is used to temporarily store the flux that overflows upward. When the piston head moves to the top, the top surface of the piston head is lower than the bottom of the clamping cavity.

[0010] In a preferred embodiment of the present invention, the sealing structure includes a second pusher and a spring; the second pusher is movably mounted on the top of the material box, and a baffle is provided at the bottom of the second pusher. The baffle slides close to the top surface of the material box and can be moved to completely cover the open opening of the material box to form a seal; the spring is used to provide elastic force for the second pusher to return to the sealed state; the second pusher is connected and cooperated with the roller drive, and the roller rotates with the movement of the second pusher.

[0011] In a preferred embodiment of the present invention, a first rotating shaft is installed at both ends of the roller strip, the first rotating shaft rotatably passes through the side wall of the material box, and a first gear is installed at the end of the first rotating shaft; racks are fixedly provided at the bottom of both ends of the second pusher; a second gear is rotatably installed on the outer wall of the material box, the second gear is located between the rack and the first gear, and the second gear meshes with the first gear and the rack for transmission; when an external force pushes the second pusher, the rack moves, driving the second gear and the first gear to rotate, and causing the first pusher to move downward; when the external force is released, the second pusher resets and moves, causing the first pusher to move upward.

[0012] In a preferred embodiment of the present invention, the second pusher includes a baffle, a first pusher plate is fixedly mounted on the top of one side of the baffle, and at least two guide rods are mounted on the first pusher plate; a support plate is vertically fixed on the top surface of the material box, the support plate is parallel to the first pusher plate, and a guide hole is opened on the support plate corresponding to the guide rod, the guide rod slides through the guide hole, and a retaining spring for anti-detachment is installed at the end of the guide rod; a spring is sleeved on the guide rod and clamped between the first pusher plate and the support plate; a third through hole for the movement of the baffle is provided at the bottom of the support plate.

[0013] In a preferred embodiment of the present invention, the top of the two side walls of the material box are provided with guide grooves and first threaded holes. The first threaded holes are located on the side of the guide grooves near the support plate, and a first guide post is installed at the first threaded hole. The rack is provided with a second strip-shaped hole and a second threaded hole that penetrate the two side walls. The second strip-shaped hole extends along the movement trajectory of the first guide post. The first guide post extends into the second strip-shaped hole and slides along the second strip-shaped hole. A second guide post is installed at the second threaded hole. The second guide post extends into the guide groove and slides along the guide groove.

[0014] The present invention also provides a method for using a flux supply device for surface mount inductor production, comprising the following steps;

[0015] S1, the external workpiece transfer device grabs the workpiece and moves it to the height corresponding to the position of the first push plate;

[0016] S2, the workpiece transfer device pushes the first push plate forward by a preset length to release the baffle from blocking the opening of the material box;

[0017] S3, the workpiece transfer device moves downward to a preset height, so that the workpiece contacts the sponge block and is coated with flux;

[0018] S4, the workpiece transfer device moves upward to a preset height, and the workpiece is higher than the top surface of the baffle;

[0019] S5, the workpiece transfer device moves backward, releasing the force on the first push plate, and the second push frame moves back under the drive of the spring, and the cover plate restores its sealing of the material box opening;

[0020] In step S2, during the movement of the second pusher, the rack drives the second gear to rotate, which in turn drives the first gear to rotate. The roller rotates and drives the first pusher to move downward, so that the flux flows downward and collects below the bottom surface of the tray.

[0021] In step S5, the spring pushes the second pusher back, and under the meshing transmission of the rack, the second gear and the first gear, the roller rotates and drives the first pusher to move upward, so that the flux overflows upward to the bottom of the soaking sponge block; and under the elastic force of the spring, the first pusher self-locks and maintains its position at the height.

[0022] The beneficial effects of this invention are as follows:

[0023] This invention provides a flux supply device and its usage method for surface mount inductor production; it includes a material box, a liquid storage component, a sealing structure, and a piston assembly; the sealing structure is installed on the top of the material box and is used to seal the open opening of the material box. It is only opened when the workpiece is dipped in flux, which can effectively prevent the liquid storage component from being exposed to the outside for a long time, and can effectively prevent the rapid evaporation caused by the heat diffused from the solder bath, thus reducing waste.

[0024] The flux storage assembly is installed on the top inner side of the material box. The assembly has a sponge block for accumulating flux, which acts as the contact point with the workpiece, achieving a uniform flux application. The piston assembly is located inside the material box. The piston head of the piston assembly moves vertically against the inner wall of the box, forming a variable-sized flux storage chamber at the top. The height of the flux can be adjusted by changing the piston assembly. When the flux is at a high position, the sponge block fully contacts and absorbs the flux. When the flux is at a low position, below the bottom of the tray, it prevents excessive flux buildup in the storage assembly, avoids direct contact with the workpiece causing excessive flux absorption, and allows the flux to fall smoothly when the sponge block is compressed.

[0025] Furthermore, the sealing structure and piston assembly are driven together, and the two structures move synchronously and in coordination. When the sealing structure releases the seal on the open opening, the piston assembly moves down synchronously, so that the internal flux is lower than the liquid storage component, and the workpiece only picks up the flux adsorbed on the sponge block. When the sealing structure returns to the position to seal the open opening, the piston assembly moves up synchronously, so that the internal flux comes into contact with the liquid storage component, and the sponge block is replenished with flux. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of a flux supply device for surface mount inductor production in a specific embodiment of the present invention, showing the blocked state of the device.

[0027] Figure 2 This is a cross-sectional view of the blocked state of a flux supply device for surface mount inductor production provided in a specific embodiment of the present invention;

[0028] Figure 3 This is a three-dimensional structural diagram of an open state of a flux supply device for surface mount inductor production provided in a specific embodiment of the present invention;

[0029] Figure 4 This is a cross-sectional view of an open state of a flux supply device for surface mount inductor production provided in a specific embodiment of the present invention;

[0030] Figure 5This is a three-dimensional unfolded structural diagram of a flux supply device for surface mount inductor production provided in a specific embodiment of the present invention;

[0031] Figure 6 This is a three-dimensional structural diagram of the material box provided in a specific embodiment of the present invention;

[0032] Figure 7 This is a cross-sectional view of the material box provided in a specific embodiment of the present invention;

[0033] Figure 8 This is a three-dimensional structural diagram of the second pusher provided in a specific embodiment of the present invention;

[0034] Figure 9 This is a three-dimensional structural diagram of the tray provided in a specific embodiment of the present invention.

[0035] In the picture:

[0036] 100. Material box; 110. Extension block; 120. Clamping cavity; 130. Support plate; 131. Guide hole; 132. Third through hole; 140. Guide groove; 150. First threaded hole; 200. Liquid storage assembly; 210. Sponge block; 220. Tray; 221. First through hole; 300. Sealing structure; 310. Second pusher; 311. Baffle; 312. First push plate; 313. Rack; 314. Second strip hole; 315. Second threaded hole; 320. Spring; 330. Guide rod; 400. Piston assembly; 410. Piston head; 420. Roller; 421. Second tooth; 422. First rotating shaft; 430. First pusher; 431. First tooth; 440. First gear; 500. Second gear; 610. First guide post; 620. Second guide post. Detailed Implementation

[0037] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0038] like Figures 1 to 5 As shown, a specific embodiment of the present invention discloses a flux supply device for surface mount inductor production, including a material box 100, a liquid storage assembly 200, a sealing structure 300, and a piston assembly 400; the top of the material box 100 is open, the liquid storage assembly 200 is installed on the inner side of the top of the material box 100, and a sponge block 210 for accumulating flux is provided on the liquid storage assembly 200, the top surface of the sponge block being lower than the top opening of the material box; the piston assembly 400 is disposed inside the material box 100, and the piston head 410 of the piston assembly 400 moves vertically against the inner wall of the material box 100, forming a liquid storage chamber with an adjustable size at the upper position; the sealing structure 300 is installed on the top of the material box 100 for sealing the open opening of the material box; the sealing structure 300 and the piston assembly 400 are in a driving cooperation; as shown Figure 4 As shown, when the sealing structure releases the seal on the open opening, the piston assembly moves downwards synchronously, causing the internal flux to be lower than the liquid accumulator assembly; as Figure 2 As shown, when the sealing structure is reset to seal the open opening, the piston assembly moves upward synchronously, allowing the internal flux to contact the liquid storage assembly.

[0039] The above-mentioned flux supply device for surface mount inductor production has a sealing structure installed on the top of the material box to seal the open opening of the material box. It is only opened when the workpiece is dipped in flux, which can effectively prevent the liquid storage component from being exposed to the outside for a long time, and can effectively prevent the rapid evaporation caused by the heat diffused from the solder bath, thus reducing waste.

[0040] The fluid storage assembly is equipped with a sponge block for accumulating flux. The sponge block acts as the part that contacts the workpiece, achieving a uniform application of flux. The piston head of the piston assembly moves vertically against the inner wall of the material box. The height of the flux can be changed by adjusting the piston assembly. When the flux is at a high position, the sponge block can fully contact and absorb the flux. When the flux is at a low position, it is below the bottom of the tray, preventing a large amount of flux from remaining in the fluid storage assembly and preventing the workpiece from directly contacting the flux and causing excessive adhesion. It also facilitates the smooth falling of flux when the sponge block is squeezed.

[0041] Furthermore, the sealing structure and piston assembly are driven together, and the two structures move synchronously and in coordination. The sealing structure is pushed open by the external workpiece transfer device, releasing the seal on the opening and exposing the liquid storage component. The piston assembly moves down synchronously, so that the internal flux is lower than the liquid storage component. The workpiece only picks up the flux adsorbed on the sponge block. When the sealing structure returns to the position to seal the opening, the piston assembly moves up synchronously, so that the internal flux comes into contact with the liquid storage component, replenishing the flux to the sponge block.

[0042] The external workpiece transfer device mainly includes a robotic arm and a clamp. The clamp is used to pick up and place the arranged workpieces, and the robotic arm is used to drive the clamp to move in multiple dimensions, at least to achieve horizontal and vertical movement. It works in conjunction with the flux supply device for surface mount inductor production of the present invention. It should be noted that this structure is a common structure and device in the field of surface mount inductor processing, and will not be described in detail.

[0043] Furthermore, such as Figure 5 As shown, the liquid storage assembly 200 includes a tray 220, which is bolted to the inside of the top opening of the material box 100; a sponge block 210 is fitted onto the top of the tray 220, and the top surface of the tray and the sponge block is lower than the top surface of the material box; as shown... Figure 9 As shown, the bottom of the tray 220 is provided with a first perforation 221 for flux flow;

[0044] The tray has a slot at the top, and a first perforation extends through the slot. The bottom of the sponge block has a corresponding locking block. The sponge block is fixed in the slot by the locking block. The simple locking mechanism makes it easy to install and remove the sponge block, and also facilitates subsequent replacement and installation.

[0045] Furthermore, the first perforation is a strip-shaped hole structure that extends along the width of the tray to penetrate both sides. Multiple first perforations are evenly spaced along the length of the tray to provide sufficient holes for flux entry and exit, facilitate the accumulation of sufficient flux at the sponge block, and also facilitate the flux to flow back to the bottom when the workpiece squeezes the sponge block.

[0046] Furthermore, such as Figure 2 , Figure 4 , Figure 5 As shown, the piston assembly 400 includes a roller 420, a first pusher 430, and a piston head 410. The first pusher is a frame-like structure with open ends and bottom. The shape of the first pusher 430 is adapted to the internal shape of the material box 100. The piston head 410 is fixedly mounted on the top of the first pusher 430 and slides tightly against the inner wall of the material box 100 to divide the internal space of the material box and form a liquid storage chamber at the top to store flux. The roller 420 is rotatably mounted between the two side walls of the material box 100, and the first pusher 430 is located above the roller 420. A first tooth 431 arranged vertically is fixedly provided on one inner wall of the first pusher 430. A second tooth 421 is correspondingly provided on the outer wall of the roller 420. The roller 420 and the first pusher 430 are driven by tooth meshing. The first pusher moves up and down with the rotation of the roller. The sealing structure is connected to the roller drive to achieve synchronous and coordinated movement.

[0047] Furthermore, such as Figure 2 , Figure 6 As shown, an extension block 110 is fixedly provided on the top of the side of the material box 100 away from the push part. The extension block 110 has a clamping cavity 120 inside, which is connected to the inside of the material box 100. It is used to temporarily store the flux that overflows upward, which can ensure that the flux is in full contact with the sponge block and prevent the flux from overflowing from the opening of the material box. When the piston head moves to the top, the top surface of the piston head is lower than the bottom of the clamping cavity, which prevents the flux from leaking from the gap between the first pusher and the material box.

[0048] The bottom surface of the clamping cavity is inclined downwards towards the side of the material box, with the lower end of the inclination flush with the bottom surface of the installed tray, and chamfered at the edge to provide a flow channel for flux return; the flux can also flow back and collect from the first perforation of the tray.

[0049] Furthermore, support bars are fixedly provided at both ends of the open opening of the material box. The top surface of the support bars is flush with the bottom surface of the tray to support the tray. On the other hand, they can also serve as blocking components for the piston head to move to, ensuring that the top surface of the piston head is lower than the lower inclined end of the clamping cavity, preventing flux from flowing to the first pusher part and seeping out from below, thus avoiding leakage problems.

[0050] Furthermore, such as Figure 4 , Figure 5 As shown, the sealing structure 300 includes a second pusher 310 and a spring 320. The second pusher 310 is movably mounted on the top of the material box 100. A baffle 311 is provided at the bottom of the second pusher 310. The baffle 311 slides close to the top surface of the material box 100 and can be moved to completely cover the open opening of the material box to form a seal. The spring 320 is used to provide the second pusher 310 with the elastic force to return to the sealed state. By using the spring as the return force, there is no need to design additional electric instruments, which reduces costs and power consumption. The second pusher is connected and cooperates with the roller drive. The roller rotates with the movement of the second pusher, which changes the pushing and lateral movement method into the rotation method, realizing the effect of driving the roller to rotate from below, driving the first pusher to move up and down. The transmission structure is cleverly used to realize the change of the direction of force and achieve the overall linkage.

[0051] Furthermore, such as Figures 3 to 5 As shown, first rotating shafts 422 are installed at both ends of roller 420. The first rotating shafts rotatably pass through the side wall of the material box, and a first gear 440 is installed at the end of the first rotating shaft 422. A rack 313 is fixedly installed at the bottom of both ends of the second pusher 310. A second gear 500 is rotatably installed on the outer wall of the material box 100. The second gear is located between the rack and the first gear, and the second gear 500 meshes with the first gear 440 and the rack 313 for transmission. When an external force pushes the second pusher, the rack moves, driving the second gear and the first gear to rotate, causing the first pusher to move downwards. When the external force is released, the second pusher returns to its original position, causing the first pusher to move upwards. Through the meshing transmission between the rack and the second gear, and the transmission between the second gear and the first gear… The meshing transmission of gears drives the lateral movement of the second pusher to drive the vertical movement of the first pusher, simultaneously satisfying the opening and closing of the baffle and the raising and lowering of the piston head. The roller has a prismatic groove at the center of each end face, and a third threaded hole in the center of the prismatic groove. The two side walls of the material box have corresponding first circular holes, through which a first rotating shaft rotatably passes. The end of the first rotating shaft has a first protrusion corresponding to the prismatic groove, and the first rotating shaft has a second through hole along its axis. The first protrusion is engaged in the prismatic groove and fixed by bolts. The roller is rotatably mounted between the two side walls of the material box via the two first rotating shafts. During assembly, the roller can be placed inside the material box first, and then the first rotating shafts at both ends can be installed for easy assembly.

[0052] Furthermore, such as Figures 5 to 8As shown, the second pusher 310 includes a baffle 311, a first pusher 312 fixedly mounted on the top of one side of the baffle 311, and at least two guide rods 330 mounted on the first pusher 312; a support plate 130 is vertically fixedly mounted on the top surface of the material box 100, the support plate is parallel to the first pusher, and a guide hole 131 is opened on the support plate 130 corresponding to the guide rod, the guide rod 330 slides through the guide hole 131, and a retaining spring is installed at the end of the guide rod; a spring 320 is sleeved on the guide rod 330, and the spring 320 is clamped between the first pusher 312 and the support plate 130; the bottom of the support plate 130 is provided with a... The third perforation 132 of the baffle is movable; the movement of the second pusher is further limited by the guide rod, so that the second pusher can maintain a smooth movement, and also ensure that the baffle can provide a relatively tight shielding effect on the opening of the material box, reducing the evaporation and discharge of flux; correspondingly, at least two springs are used to provide sufficient reset force so that the second pusher can be reset smoothly; and a certain resistance is maintained to play a certain locking effect on the second gear and the first gear, which means that the first pusher is locked, so that the piston head is maintained at the corresponding height, so that the flux is in a high position, and the sponge block can fully contact and absorb the flux.

[0053] Furthermore, such as Figure 5 , Figure 6 As shown, the top of both side walls of the material box 100 are provided with guide grooves 140 and first threaded holes 150. The first threaded holes are located on the side of the guide grooves near the support plate, and a first guide post 610 is installed at the first threaded hole 150. The rack 313 is provided with a second strip-shaped hole 314 and a second threaded hole 315 penetrating both side walls. The second strip-shaped hole extends along the movement trajectory of the first guide post. The first guide post 610 extends into the second strip-shaped hole 314 and slides along the second strip-shaped hole. A second guide post 620 is installed at the second threaded hole 315. The second guide post 620 extends into the guide groove 140 and slides along the guide groove. By using the cooperation of the first guide post and the second strip-shaped hole, and the cooperation of the second guide post and the guide groove, the movement of the second pusher can be further limited, so that it moves smoothly. The baffle slides tightly against the top surface of the material box, achieving effective sealing. In addition, this structure also provides an upward blockage to prevent the second pusher from tilting up and detaching from the top of the material box.

[0054] The present invention also discloses a method for using a flux supply device for surface mount inductor production, comprising the following steps;

[0055] S1, the external workpiece transfer device grabs the workpiece and moves it to the height corresponding to the position of the first push plate;

[0056] S2, the workpiece transfer device pushes the first push plate forward by a preset length to release the baffle from blocking the opening of the material box;

[0057] S3, the workpiece transfer device moves downward to a preset height, so that the workpiece contacts the sponge block and is coated with flux;

[0058] S4, the workpiece transfer device moves upward to a preset height, and the workpiece is higher than the top surface of the baffle;

[0059] S5, the workpiece transfer device moves backward, releasing the force on the first push plate, and the second push frame moves back under the drive of the spring, and the cover plate restores its sealing of the material box opening;

[0060] In step S2, during the movement of the second pusher, the rack drives the second gear to rotate, which in turn drives the first gear to rotate. The roller rotates and drives the first pusher to move downward, so that the flux flows downward and collects below the bottom surface of the tray.

[0061] In step S5, the spring pushes the second pusher back, and under the meshing transmission of the rack, the second gear and the first gear, the roller rotates and drives the first pusher to move upward, so that the flux overflows upward to the bottom of the soaking sponge block; and under the elastic force of the spring, the first pusher self-locks and maintains its position at the height.

[0062] It should be noted that when the baffle is in the blocked position, the piston head is in a high position, placing the flux at the top of the material box for effective soaking of the sponge block and replenishment of flux on the sponge block. A clamping cavity is provided on one side, expanding the top space. When the piston head is pushed upwards, the upward-moving flux enters the clamping cavity, preventing overflow and accelerating contact and soaking with the sponge block. Furthermore, when the piston head moves downwards, the flux in the clamping cavity flows and converges with the inclined material box, preventing flux accumulation in the clamping cavity and thus avoiding interference with flux discharge when the sponge block is squeezed. In actual use, flux needs to be added regularly to ensure sufficient dosage. When the piston head rises, the flux should be in full contact with the sponge block to ensure sufficient flux accumulation and effective adhesion of the workpiece.

[0063] This invention has been described through preferred embodiments. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. This invention is not limited to the specific embodiments disclosed herein; other embodiments falling within the scope of the claims are also within the protection scope of this invention.

Claims

1. A flux supply device for surface mount inductor production, characterized in that: Includes a material box, liquid storage assembly, sealing structure, and piston assembly; The top of the material box is open, and the liquid storage assembly is installed on the inside of the top of the material box. The liquid storage assembly is equipped with a sponge block for accumulating flux, and the top surface of the sponge block is lower than the top opening of the material box. The piston assembly is located inside the material box. The piston head of the piston assembly moves vertically against the inner wall of the material box, forming a liquid storage chamber with an adjustable size at the upper position. The sealing structure is installed on the top of the material box to seal the open opening of the material box; The sealing structure is driven and coordinated with the piston assembly; When the sealing structure releases the seal on the open opening, the piston assembly moves down synchronously, so that the internal flux is lower than the liquid storage assembly; When the sealing structure is reset to seal the open opening, the piston assembly moves upward synchronously, so that the internal flux comes into contact with the liquid storage assembly; The piston assembly includes rollers, a first pusher, and a piston head; The first pusher is a frame-like structure with open ends and bottom. The shape of the first pusher is adapted to the internal shape of the material box. The piston head is fixed on the top of the first pusher and slides tightly against the inner wall of the material box. The rollers are mounted between the two side walls of the material box, and the first pusher is mounted above the rollers. The inner wall of one side of the first pusher is fixed with first teeth arranged in a vertical direction; The outer wall of the roller is provided with a second tooth, and the roller and the first pusher are driven by the meshing of the tooth. The first pusher moves up and down as the roller rotates. The sealing structure is connected to the roller drive; The sealing structure includes a second pusher and a spring; The second pusher is movably installed on the top of the material box. The bottom of the second pusher is equipped with a baffle. The baffle slides close to the top surface of the material box and can be moved to completely cover the open opening of the material box to form a seal. The spring is used to provide the second pusher with the elastic force to return to the blocked state; The second pusher is connected to the roller drive, and the roller rotates as the second pusher moves.

2. The flux supply device for surface mount inductor production according to claim 1, characterized in that: The liquid storage assembly includes a tray, which is bolted to the inside of the top opening of the container; A sponge block is installed on the top of the tray, and the top surface of the tray and the sponge block is lower than the top surface of the material box; The bottom of the tray has a first perforation for flux flow.

3. The flux supply device for surface mount inductor production according to claim 2, characterized in that: An extension block is fixedly provided on the top of the side of the material box away from the push part. The extension block has a clamping cavity inside, which is connected to the inside of the material box to temporarily store the flux that overflows upward. When the piston head moves to the top, the top surface of the piston head is lower than the bottom of the clamping cavity.

4. The flux supply device for surface mount inductor production according to claim 3, characterized in that: The roller has a first rotating shaft installed at both ends. The first rotating shaft rotates through the side wall of the material box. The first rotating shaft has a first gear installed at its end. The bottom ends of the second pusher are fixed with racks; A second gear is rotatably mounted on the outer wall of the material box. The second gear is located between the rack and the first gear, and the second gear meshes with the first gear and the rack for transmission. When an external force pushes the second pusher, the rack moves, driving the second gear and the first gear to rotate, which in turn causes the first pusher to move downward. When the external force is removed, the second pusher returns to its original position and moves, causing the first pusher to move upward.

5. A flux supply device for surface mount inductor production according to claim 4, characterized in that: The second pusher includes a baffle, and a first pusher plate is fixedly provided on the top side of one side of the baffle. At least two guide rods are installed on the first pusher plate. A support plate is vertically fixed on the top surface of the material box. The support plate is parallel to the first push plate. A guide hole is opened on the support plate corresponding to the guide rod. The guide rod slides through the guide hole. A retaining spring for anti-detachment is installed at the end of the guide rod. The spring is sleeved on the guide rod, and the spring clamp is located between the first push plate and the support plate; The bottom of the support plate has a third perforation for the movement of the baffle.

6. A flux supply device for surface mount inductor production according to claim 5, characterized in that: The top of both sides of the material box is provided with guide grooves and first threaded holes. The first threaded hole is located on the side of the guide groove close to the support plate, and a first guide post is installed at the first threaded hole. The rack is provided with a second strip hole and a second threaded hole that penetrate both side walls. The second strip hole extends along the movement trajectory of the first guide post. The first guide post extends into the second strip hole and slides along the second strip hole. A second guide post is installed at the second threaded hole. The second guide post extends into the guide groove and slides along the guide groove.

7. A method of using the flux supply device for surface mount inductor production as described in claim 6, characterized in that: Includes the following steps; S1, the external workpiece transfer device grabs the workpiece and moves it to the height corresponding to the position of the first push plate; S2, the workpiece transfer device pushes the first push plate forward by a preset length to release the baffle from blocking the opening of the material box; S3, the workpiece transfer device moves downward to a preset height, so that the workpiece contacts the sponge block and is coated with flux; S4, the workpiece transfer device moves upward to a preset height, and the workpiece is higher than the top surface of the baffle; S5, the workpiece transfer device moves backward, releasing the force on the first push plate, and the second push frame moves back under the drive of the spring, and the cover plate restores its sealing of the material box opening; In step S2, during the movement of the second pusher, the rack drives the second gear to rotate, which in turn drives the first gear to rotate. The roller rotates and drives the first pusher to move downward, so that the flux flows downward and collects below the bottom surface of the tray. In step S5, the spring pushes the second pusher back, and under the meshing transmission of the rack, the second gear and the first gear, the roller rotates and drives the first pusher to move upward, so that the flux overflows upward to the bottom of the soaking sponge block; and under the elastic force of the spring, the first pusher self-locks and maintains its position at the height.

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