Vacuum feeding mechanism for solder paste production

Abstract

The utility model provides a vacuum feeding mechanism for solder paste production, which relates to the technical field of solder paste production and comprises a support table and a stirring barrel fixed on the upper surface of the support table, a feeding component is arranged in the support table, and a stirring component is arranged in the stirring barrel. The vacuum feeding mechanism for solder paste production comprises a feeding assembly, a partition plate fixed in a stirring bin and a baffle hinged to the lower surface of the partition plate. According to the solder paste vacuum feeding device, vacuum feeding of solder paste can be completed through a telescopic rod and a spring, so that metal components in the solder paste are prevented from being oxidized when making contact with air, the welding quality is improved, bubbles and impurities of the solder paste can be reduced through vacuum feeding, the feeding amount every time is more consistent, and the stability and quality of welding spots are ensured; and meanwhile, external pollution sources can be effectively isolated in the vacuum feeding process, and the influence of dust, moisture and the like on the solder paste is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a feeding mechanism, concretely is a vacuum feeding mechanism for solder paste production belongs to solder paste production technical field. BACKGROUND

[0002] Solder paste is also called soldering paste, is a gray paste, soldering paste is a new type of welding material that emerges with SMT, is by soldering powder, flux and other surface active agent, thixotropic agent etc. With the mixture, forms the paste mixture, is mainly used in SMT industry PCB surface resistance, capacitor, IC etc. Electronic components welding, soldering paste is a new type of welding material that emerges with SMT, soldering paste is a complex system, is by soldering powder, flux and other additives mixed into paste, soldering paste has certain viscosity at room temperature, can be initially adhered to the electronic components in the specified position, under the welding temperature, along with the volatilization of solvent and part of additive, the welded components and printed circuit pad are welded together to form permanent connection.

[0003] After the completion of solder paste, the solder paste needs to be filled, so the feeding mechanism needs to be used during filling, in the loading process, the solder paste is easy to contact with oxygen in the air, which leads to oxidation of metal components, thereby affecting the welding performance, and the solid particles in the solder paste are easy to precipitate after standing, which leads to the decrease of the uniformity of the solder paste, and affects the subsequent printing and welding effect.

[0004] Therefore, the vacuum feeding mechanism for solder paste production is proposed. UTILITY MODEL CONTENTS

[0005] The utility model discloses a kind of vacuum feeding mechanisms for solder paste production, to solve the problem that solder paste is easy to contact with oxygen in the air in prior art, which leads to oxidation of metal components, thereby affecting the welding performance, and the solid particles in the solder paste are easy to precipitate after standing, which leads to the decrease of the uniformity of the solder paste, and affects the subsequent printing and welding effect.

[0006] The utility model is implemented by the following technical solutions: a kind of vacuum feeding mechanism for solder paste production, including support table, still including the stirring barrel of being fixed on the upper surface of support table, the inside of support table is provided with feeding assembly, the inside of stirring barrel is provided with stirring assembly;

[0007] The stirring barrel includes stirring bin and baffle fixed in the inner wall of stirring bin, the lower surface of baffle is hinged with baffle, the lower surface of baffle is hinged with telescopic rod, the other end of telescopic rod is hinged in the inner wall of stirring bin, the surface of telescopic rod is sleeved with spring, and the baffle is fan-shaped;

[0008] The support table is internally provided with a transmission bin, the feeding assembly is arranged inside the transmission bin, a feeding port is arranged on the surface of the transmission bin, and a discharging port is arranged on the bottom of the stirring barrel and corresponds to the position of the feeding port.

[0009] Further, the telescopic rods, springs and baffles are arranged in a ring shape and uniformly arranged inside the stirring bin, the baffles are movably arranged on the lower surface of the partition plate through the telescopic rods and springs, adjacent baffles can be tightly sealed, and a feeding hole is arranged on the top of the stirring barrel.

[0010] Further, the feeding assembly comprises a second motor fixed to the side surface of the support table, the output end of the second motor is arranged in the transmission bin, the output end of the second motor is fixed with a threaded rod, the surface of the threaded rod is threadedly connected with a threaded tube, the other end of the threaded tube is fixed with a sealing plate, and the diameter of the sealing plate is the same as that of the transmission bin.

[0011] Further, the feeding assembly further comprises a limiting rod, one end of the limiting rod is fixed to the inner wall of the transmission bin, the surface of the threaded tube is provided with a receiving groove corresponding to the limiting rod, the other end of the limiting rod is fixed to the inner wall of the receiving groove, and the limiting rod has two and is symmetrically arranged on both sides of the threaded rod.

[0012] Further, the stirring assembly comprises a first motor installed on the upper surface of the stirring barrel, the output end of the first motor is fixed with a stirring rod, the lower end of the stirring rod is arranged in the stirring bin, the surface of the stirring rod is fixed with a first bevel gear, the inner wall of the stirring bin is further fixed with a fixed plate, the side surface of the fixed plate is fixed with a second bevel gear, and the first bevel gear is engaged with the second bevel gear.

[0013] Further, the surface of the stirring rod is rotatably sleeved with a rotating block, the surface of the rotating block is fixed with a third bevel gear, the third bevel gear is engaged with the second bevel gear, the first bevel gear and the third bevel gear rotate in different directions on the same axis, the side surface of the rotating block is fixed with a scraper, and the side surface of the stirring rod is fixed with a stirring paddle.

[0014] Further, the side surface of the support table is fixed with a discharging pipe, one end of the discharging pipe is arranged in the transmission bin, and the surface of the discharging pipe is fixed with an electromagnetic valve.

[0015] The utility model provides a vacuum feeding mechanism for solder paste production, which has the following beneficial effects:

[0016] 1. The vacuum feeding mechanism for tin paste production can complete the vacuum feeding of tin paste through the feeding assembly, the partition plate in the fixed stirring bin, the baffle hinged to the lower surface of the partition plate, the telescopic rod and the spring, thereby preventing the oxidation of metal components in the tin paste when contacting air, improving the welding quality, and reducing the bubbles and impurities of the tin paste through vacuum feeding, making the amount of each feeding more consistent, ensuring the stability and quality of the welding points, and effectively isolating external pollution sources during the vacuum feeding process, reducing the influence of dust, moisture and the like on the tin paste.

[0017] 2. The vacuum feeding mechanism for tin paste production can stir the tin paste in the stirring bin through the stirring mechanism, disperse the precipitated solid particles in the tin paste, ensure the uniformity of the tin paste, improve the subsequent printing and welding effect, and restore the viscosity of the tin paste through stirring, so that it remains in a state suitable for printing and coating, avoiding changes in viscosity caused by volatilization or precipitation, while effectively releasing bubbles during the stirring process to avoid bubble aggregation, thereby improving the welding quality and reducing the risk of defective welding points. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic view of the three-dimensional structure of the utility model;

[0019] Figure 2 is a schematic view of the front view and cross-sectional structure of the utility model;

[0020] Figure 3 is a schematic view of the structure of the utility model Figure 2 enlarged at A;

[0021] Figure 4 is a schematic view of the structure of the feeding assembly during operation.

[0022] BRIEF DESCRIPTION OF DRAWINGS

[0023] 1. support table; 101, transmission bin; 102, discharge pipe; 103, electromagnetic valve; 104, feeding port;

[0024] 2. stirring barrel; 201, stirring bin; 202, partition plate; 203, baffle; 204, telescopic rod; 205, spring; 206, discharge port; 207, feeding hole;

[0025] 3. stirring assembly; 301, first motor; 302, stirring rod; 303, first bevel gear; 304, fixed plate; 305, second bevel gear; 306, rotating block; 307, third bevel gear; 308, scraper; 309, stirring paddle;

[0026] 4. feeding assembly; 401, second motor; 402, threaded rod; 403, threaded tube; 404, sealing plate; 405, limiting rod. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work are within the protection scope of the present application.

[0028] Please refer to Figures 1-4 The utility model discloses a kind of vacuum feeding mechanisms for solder paste production, including support table 1, it further includes the stirring barrel 2 of being fixed on the upper surface of support table 1, feeding assembly 4 is provided in support table 1, stirring assembly 3 is provided in stirring barrel 2;Stirring barrel 2 includes stirring bin 201 and the baffle 202 of being fixed in the inner wall of stirring bin 201, the lower surface of baffle 202 is hinged with baffle 203, the lower surface of baffle 203 is hinged with telescopic link 204, telescopic link 204 other end is hinged in the inner wall of stirring bin 201, telescopic link 204 surface is sleeved with spring 205, baffle 203 is sector-shaped;Telescopic link 204, spring 205 and baffle 203 are multiple, and annular evenly arranged in the inside of stirring bin 201, baffle 203 is movable on the lower surface of baffle 202 by telescopic link 204 and spring 205, adjacent baffle 203 can be sealed by sticking, feeding hole 207 is set in the top of stirring barrel 2.

[0029] Please refer to Figure 1 、 Figure 2 and Figure 4The inside of the support table 1 is provided with a transmission bin 101, and the feeding assembly 4 is arranged in the transmission bin 101. The surface of the transmission bin 101 is provided with a feeding port 104, and the bottom of the stirring barrel 2 is provided with a discharging port 206. The positions of the feeding port 104 and the discharging port 206 correspond to each other. The feeding assembly 4 comprises a second motor 401 fixed to the side surface of the support table 1. The output end of the second motor 401 penetrates the transmission bin 101. The output end of the second motor 401 is fixed with a threaded rod 402. The surface of the threaded rod 402 is threadedly connected with a threaded pipe 403. The other end of the threaded pipe 403 is fixed with a sealing plate 404. The diameter of the sealing plate 404 is the same as that of the transmission bin 101. The feeding assembly 4 further comprises a limiting rod 405. One end of the limiting rod 405 is fixed to the inner wall of the transmission bin 101. The surface of the threaded pipe 403 is provided with a receiving groove corresponding to the limiting rod 405. The other end of the limiting rod 405 is fixed to the inner wall of the receiving groove. There are two limiting rods 405, which are symmetrically arranged on the two sides of the threaded rod 402. The vacuum feeding mechanism for solder paste production can complete the vacuum feeding of the solder paste through the feeding assembly 4, the partition plate 202 fixed in the fixed stirring bin 201, the baffle 203 hingedly arranged on the lower surface of the partition plate 202, the telescopic rod 204 and the spring 205. Thus, the oxidation of metal components in the solder paste when contacting air is prevented, the welding quality is improved, the bubbles and impurities of the solder paste are reduced, the amount of each feeding is more consistent, the stability and quality of the welding points are ensured, and the influence of dust, moisture and the like on the solder paste is reduced during the vacuum feeding process.

[0030] Please refer to Figure 2 , Figure 3 and Figure 4 The stirring assembly 3 comprises a first motor 301 mounted on the upper surface of the stirring barrel 2. The output end of the first motor 301 is fixed with a stirring rod 302. The lower end of the stirring rod 302 penetrates the stirring bin 201. The surface of the stirring rod 302 is fixed with a first bevel gear 303. The inner wall of the stirring bin 201 is further fixed with a fixed plate 304. The side surface of the fixed plate 304 is fixed with a second bevel gear 305. The first bevel gear 303 is engaged with the second bevel gear 305. The surface of the stirring rod 302 is rotatably sleeved with a rotating block 306. The surface of the rotating block 306 is fixed with a third bevel gear 307. The third bevel gear 307 is engaged with the second bevel gear 305. The first bevel gear 303 and the third bevel gear 307 rotate in different directions on the same axis. The side surface of the rotating block 306 is fixed with a scraper 308. The side surface of the stirring rod 302 is fixed with a stirring paddle 309.

[0031] Please refer to Figure 1 and Figure 2 The side surface of the support table 1 is fixed with a discharging pipe 102. One end of the discharging pipe 102 penetrates the transmission bin 101. The surface of the discharging pipe 102 is fixed with an electromagnetic valve 103.

[0032] In use, the device is first connected to an external control device and a 220V mains power supply. The control device can be a conventional known device such as a computer. Then, the operator controls the second motor 401 through the control device. The second motor 401 drives the threaded rod 402 to rotate, and the threaded rod 402 pulls the threaded tube 403 and the sealing plate to move. The sealing plate 404 moves continuously, causing a short-term negative pressure inside the mixing chamber 201. Under the action of the negative pressure, the solder paste pushes the baffle 203 to rotate, thus entering the transmission chamber 101 from the mixing chamber 201 through the discharge port 206 and the inlet 104. When an appropriate amount of solder paste enters the transmission chamber 101, the pressure inside the mixing chamber 201 returns to normal, the spring 205 pushes the baffle 203 back to its original position, and at the same time controls the second motor 401 to operate in reverse, pushing the sealing plate 404 to move and opening the solenoid valve 103 to discharge the solder paste from the transmission chamber 101, completing the vacuum feeding.

[0033] When it is necessary to stir the solder paste in the stirring chamber 201, the operator only needs to control the first motor 301 through the control equipment. The first motor 301 drives the stirring rod 302 to rotate, and the stirring rod 302 drives the stirring paddle 309 fixed on its side to rotate synchronously, thereby stirring the solder paste in the stirring chamber 201. At the same time, during the rotation of the stirring rod 302, it can also drive the first bevel gear 303 to rotate, the first bevel gear 303 drives the second bevel gear 305 to rotate, the second bevel gear 305 drives the third bevel gear 307 that meshes with it to rotate, and the third bevel gear 307 drives the rotating block 306 to rotate, thereby driving the scraper 308 fixed on the side of the rotating block 306 to rotate synchronously, thereby scraping the inner wall of the stirring chamber 201 and preventing the solder paste from adhering to the inner wall of the stirring chamber 201.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A vacuum feeding mechanism for tin paste production, comprising a support table (1), characterized in that: It also includes a stirring barrel (2) fixed on the upper surface of the support table (1), the inside of the support table (1) is provided with a feeding assembly (4), and the inside of the stirring barrel (2) is provided with a stirring assembly (3); The stirring barrel (2) comprises a stirring bin (201) and a partition plate (202) fixed on the inner wall of the stirring bin (201), the lower surface of the partition plate (202) is hinged with a baffle (203), the lower surface of the baffle (203) is hinged with a telescopic rod (204), the other end of the telescopic rod (204) is hinged on the inner wall of the stirring bin (201), the surface of the telescopic rod (204) is sleeved with a spring (205), and the baffle (203) is fan-shaped. The inside of the support table (1) is provided with a transmission bin (101), the feeding assembly (4) is arranged in the transmission bin (101), the surface of the transmission bin (101) is provided with a feeding port (104), the bottom of the stirring barrel (2) is provided with a discharging port (206), and the positions of the feeding port (104) and the discharging port (206) correspond.

2. The vacuum feeding mechanism for tin paste production according to claim 1, characterized in that: The telescopic rod (204), the spring (205) and the baffle (203) are evenly arranged in the stirring bin (201) in a ring shape, the baffle (203) is movably arranged on the lower surface of the partition plate (202) through the telescopic rod (204) and the spring (205), adjacent baffles (203) can be tightly sealed, and the top of the stirring barrel (2) is provided with a feeding hole (207).

3. The vacuum feeding mechanism for producing tin paste according to claim 1, characterized in that: The feeding assembly (4) comprises a second motor (401) fixed on the side surface of the support table (1), the output end of the second motor (401) penetrates the transmission bin (101), the output end of the second motor (401) is fixed with a threaded rod (402), the surface of the threaded rod (402) is threadedly connected with a threaded tube (403), the other end of the threaded tube (403) is fixed with a sealing plate (404), and the diameter of the sealing plate (404) is the same as that of the transmission bin (101).

4. The vacuum feeding mechanism for producing tin paste according to claim 3, characterized in that: The feeding assembly (4) further comprises a limiting rod (405), one end of the limiting rod (405) is fixed on the inner wall of the transmission bin (101), the surface of the threaded tube (403) is provided with a receiving groove corresponding to the limiting rod (405), the other end of the limiting rod (405) is fixed on the inner wall of the receiving groove, and the limiting rod (405) has two and is symmetrically arranged on the two sides of the threaded rod (402).

5. The vacuum feeding mechanism for producing tin paste according to claim 1, characterized in that: The stirring assembly (3) comprises a first motor (301) mounted on the upper surface of the stirring barrel (2), the output end of the first motor (301) is fixed with a stirring rod (302), the lower end of the stirring rod (302) penetrates the stirring bin (201), the surface of the stirring rod (302) is fixed with a first bevel gear (303), the inner wall of the stirring bin (201) is further fixed with a fixed plate (304), the side surface of the fixed plate (304) is fixed with a second bevel gear (305), and the first bevel gear (303) is engaged with the second bevel gear (305).

6. The vacuum feeding mechanism for producing tin paste according to claim 5, characterized in that: The stirring rod (302) is sleeved with a rotating block (306) on the surface, the third bevel gear (307) is fixed on the surface of the rotating block (306), the third bevel gear (307) is engaged with the second bevel gear (305), the first bevel gear (303) and the third bevel gear (307) rotate coaxially and oppositely, the scraper (308) is fixed on the side of the rotating block (306), and the stirring rod (302) is fixed with the stirring paddle (309) on the side.

7. The vacuum feeding mechanism for producing tin paste according to claim 1, characterized in that: The supporting table (1) is fixed with a discharge pipe (102) on the side, one end of the discharge pipe (102) penetrates in the transmission bin (101), and the electromagnetic valve (103) is fixed on the surface of the discharge pipe (102).

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