Cooling device of vacuum welding furnace

Abstract

The utility model discloses a cooling device of a vacuum welding furnace, and relates to the technical field of vacuum welding furnace cooling. The device comprises a machine body and an installation box connected to the machine body, a collection box is arranged in the installation box, the bottom face of the inner wall of the collection box is connected with a ventilation pipe extending upwards, a draught fan is arranged in the ventilation pipe, and the output end of the draught fan is connected with a plurality of scraping plates. Cooling liquid in the cooling liquid storage device is driven by the circulating pump to circulate through the cooling pipe, the fan is started to drive hot air in the machine body to be sucked out, then the hot air is cooled through the cooling pipe and blown to the filter screen through the ventilation pipe, and then the fan drives the scraper to rotate through the transmission shaft to scrape the filter screen. Impurities filtered by the filter screen are scraped into the slag guide open slot by the scraper, then thrown out through the discharge port and fall into the collecting box, so that the filter screen is convenient to scrape and clean, the filter screen is convenient to continuously filter, and the impurities filtered by the filter screen are convenient to collect through the collecting box.

Description

Technical Field

[0001] The utility model belongs to the field of vacuum welding furnace cooling, in particular to a cooling device for a vacuum welding furnace. Background Art

[0002] Due to the need for the continuous miniaturization of PCB boards for electronic products, sheet components have appeared, and traditional welding methods can no longer meet the needs. The reflow soldering process is used in the assembly of hybrid integrated circuit boards. Most of the components assembled and welded are sheet capacitors, sheet inductors, surface mount transistors and diodes. There is a heating circuit inside this equipment, which heats the air or nitrogen to a high enough temperature and blows it to the circuit board with the components already attached, so that the solder on both sides of the components melts and bonds with the main board. The advantage of this process is that the temperature is easy to control, oxidation can be avoided during the welding process, and the manufacturing cost is easier to control.

[0003] The Chinese patent with publication number CN210877977U discloses a cooling device for a vacuum welding furnace, including a body, an installation box, a fixed frame, a copper plate, a heat dissipation pipe, a fin, a filter, a duct, a cooling fan, a protective net, a liquid storage tank, a liquid pump, a connecting pipe, a dust net, an air inlet pipe, a throttle pipe and a cabinet, the top of the body is fixedly connected to the bottom of the installation box, the four sides of the inner wall of the installation box are respectively fixedly connected to the four sides of the fixed frame, the four sides of the inner wall of the fixed frame are respectively fixedly connected to the four sides of the copper plate, and the heat dissipation pipe is located in the middle position inside the copper plate. The utility model achieves the purpose of rapid cooling of the vacuum welding furnace, ensures that the operating temperature of the entire equipment is in a suitable state, and significantly improves the cooling effect, so that the equipment itself and the internal parts are protected from damage caused by high temperature, thereby improving the stable operation of the vacuum welding furnace and extending the service life. However, in the cooling device for the vacuum welding furnace in the application, the filter screen is easily blocked after being used for a period of time, which affects the ventilation and heat dissipation of the cooling device.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a cooling device for a vacuum welding furnace.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0007] A cooling device for a vacuum welding furnace comprises a body and an installation box connected to the body, wherein the installation box is a cylindrical structure, a collection box is arranged inside the installation box, a ventilation pipe extending upward is connected to the bottom surface of the inner wall of the collection box, a fan is arranged inside the ventilation pipe, a plurality of scrapers are connected to the output end of the fan, a filter screen is arranged at the box opening at the upper end of the collection box, and the scraper screen corresponds to the filter screen.

[0008] Optionally, a transmission shaft is provided at the output end of the fan, and a plurality of scrapers are arranged in a circular array on the transmission shaft, so that the fan can drive the scrapers to rotate through the transmission shaft to clean the filter.

[0009] Optionally, a slag guiding opening groove is provided on the length direction side of the scraper, and a discharge port connected to the slag guiding opening groove is provided on the width direction side of the scraper. The height of the upper inner wall of the slag guiding opening groove gradually increases from away from the opening end to the opening end. The height of the inner wall of the opening end of the slag guiding opening groove is the same as the height of the bottom surface of the filter screen, which makes it convenient for the scraper to scrape the impurities filtered out of the filter screen into the slag guiding opening groove, and then throw them out through the discharge port.

[0010] Optionally, the height of the upper side of the ventilation pipe is higher than the height of the bottom surface of the inner wall of the collection box, so as to facilitate the collection of filtered impurities through the collection box.

[0011] Optionally, an outer flange is provided at the opening of the collection box, and the outer flange is located on the upper side of the installation box, so that the collection box can be supported and installed through the outer flange, and the collection box can be quickly removed from the installation box.

[0012] Optionally, a cooling pipe is provided in the installation box, and the part of the cooling pipe located in the installation box is a continuous U-shaped structure. A coolant storage device is provided on one side of the fuselage body, and a circulating pump is provided on one side of the installation box. One end of the circulating pump is connected to the coolant storage device, and both ends of the cooling pipe are respectively connected to the circulating pump and the coolant storage device. The part of the cooling pipe located in the installation box is provided with a heat sink, and the heat sink is evenly distributed with heat dissipation holes, so that the air in the fuselage body can enter the collection box through the cooling pipe and the heat sink, so that the air exhausted from the fuselage body can be dissipated through the cooling pipe and the heat sink.

[0013] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art. Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described below at the same time:

[0014] The circulating pump drives the coolant in the coolant storage device to circulate through the cooling pipe, and the fan is turned on to suck out the hot air in the fuselage body, and then it is cooled through the cooling pipe, and then blown to the filter through the ventilation pipe. The fan then drives the scraper to rotate and scrape the filter through the transmission shaft. The scraper scrapes the impurities filtered out of the filter into the slag guide opening groove, and then throws it out through the discharge port and falls into the collection box, which is convenient for scraping and cleaning the filter, facilitating continuous filtering of the filter, and facilitating collection of impurities filtered out of the filter through the collection box.

[0015] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the utility model;

[0018] Figure 2 This is a schematic cross-sectional view of an embodiment of the utility model;

[0019] Figure 3 This is a schematic cross-sectional view of the installation box of one embodiment of the utility model;

[0020] Figure 4 This is a schematic diagram of the scraper structure of an embodiment of the utility model;

[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0022] The machine body 1, the installation box 2, the collection box 3, the outer flange 301, the ventilation pipe 4, the fan 5, the scraper 6, the slag guide opening groove 601, the discharge port 602, the filter screen 7, the transmission shaft 8, the cooling pipe 9, the circulation pump 10, and the heat sink 11.

[0023] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0024] The utility model will now be further described in detail with reference to the accompanying drawings.

[0025] See also Figure 1-4 As shown, in this embodiment, a cooling device for a vacuum welding furnace is provided, including a body 1, an installation box 2 connected to the body 1, the installation box 2 is a cylindrical structure, a collecting box 3 is arranged in the installation box 2, a ventilation pipe 4 extending upward is connected to the bottom surface of the inner wall of the collecting box 3, a fan 5 is arranged in the ventilation pipe 4, a plurality of scrapers 6 are connected to the output end of the fan 5, a filter screen 7 is arranged at the upper box opening of the collecting box 3, and the scraper 6 corresponds to the filter screen 7.

[0026] The coolant in the cooling liquid storage device is driven by the circulating pump 10 to circulate through the cooling pipe 9, and the fan 5 is turned on to suck out the hot air in the fuselage body 1, and then cooled through the cooling pipe 9, and then blown to the filter 7 through the ventilation pipe 4, and then the fan 5 drives the scraper 6 to rotate and scrape the filter 7 through the transmission shaft 8. The scraper 6 scrapes the impurities filtered out of the filter 7 into the slag guide opening groove 601, and then throws it out through the discharge port 602 and falls into the collection box 3, which is convenient for scraping and cleaning the filter 7, facilitating continuous filtering of the filter 7, and facilitating the collection of impurities filtered out of the filter 7 through the collection box 3.

[0027] The output end of the fan 5 of this embodiment is provided with a transmission shaft 8, and a plurality of scrapers 6 are arranged in a circular array on the transmission shaft 8, so that the fan 5 drives the scrapers 6 to rotate and clean the filter screen 7 through the transmission shaft 8, thereby facilitating the cleaning of the filter screen 7.

[0028] The scraper 6 of this embodiment is provided with a slag guiding opening groove 601 on the length direction side, and the scraper 6 is provided with a discharge port 602 connected with the slag guiding opening groove 601 on the width direction side. The height of the upper inner wall of the slag guiding opening groove 601 gradually increases from away from the opening end to the opening end. The height of the inner wall of the opening end of the slag guiding opening groove 601 is the same as the bottom surface height of the filter screen 7, which makes it easy for the scraper 6 to scrape the impurities filtered out of the filter screen 7 into the slag guiding opening groove 601, and then throw them out through the discharge port 602 and fall into the collection box 3.

[0029] The height of the upper side of the ventilation pipe 4 in this embodiment is higher than the height of the bottom surface of the inner wall of the collecting box 3 , so that the filtered impurities can be collected through the collecting box 3 .

[0030] The collection box 3 of this embodiment is provided with an outer flange 301 at the box opening, and the outer flange 301 is located on the upper side of the installation box 2, so that the collection box 3 can be supported and installed through the outer flange 301, and the collection box 3 can be quickly removed from the installation box 2, and then the filter screen 7 can be removed, so as to quickly clean the collection box 3.

[0031] A cooling pipe 9 is provided in the installation box 2 of the present embodiment. The cooling pipe 9 is located in the installation box 2 and has a continuous U-shaped structure. A coolant storage device is provided on one side of the fuselage body 1. A circulating pump 10 is provided on one side of the installation box 2. One end of the circulating pump 10 is connected to the coolant storage device. Both ends of the cooling pipe 9 are respectively connected to the circulating pump 10 and the coolant storage device. The cooling pipe 9 is located in the installation box 2 and is provided with a heat sink 11. The heat sink 11 is evenly distributed with heat dissipation holes, so that the air in the fuselage body 1 can enter the collection box 3 through the cooling pipe 9 and the heat sink 11, and the air discharged from the fuselage body 1 can be dissipated through the cooling pipe 9 and the heat sink 11, so as to improve the heat dissipation efficiency of the fuselage body 1.

[0032] Working principle: the circulating pump 10 drives the coolant in the cooling liquid storage device to circulate through the cooling pipe 9, and the fan 5 is turned on to drive the hot air in the fuselage body 1 to be sucked out, and then cooled through the cooling pipe 9, and then blown to the filter 7 through the ventilation pipe 4, and then the fan 5 drives the scraper 6 to rotate and scrape the filter 7 through the transmission shaft 8. The scraper 6 scrapes the impurities filtered out of the filter 7 into the slag guide opening groove 601, and then throws it out through the discharge port 602 and falls into the collection box 3, which is convenient for scraping and cleaning the filter 7, facilitating continuous filtering of the filter 7, and facilitating the collection of impurities filtered out of the filter 7 through the collection box 3.

[0033] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0034] The present invention is not limited to the above-mentioned implementation modes. Anyone should be aware of the structural changes made under the inspiration of the present invention. Any technical solution that is the same or similar to the present invention falls within the protection scope of the present invention. The technology, shape, and structure that are not described in detail in the present invention are all known technologies.

Claims

1. A cooling device for a vacuum welding furnace, characterized in that: include: A machine body (1), an installation box (2) connected to the machine body (1), a collection box (3) is arranged in the installation box (2), a ventilation pipe (4) extending upward is connected to the bottom surface of the inner wall of the collection box (3), a fan (5) is arranged in the ventilation pipe (4), a plurality of scrapers (6) are connected to the output end of the fan (5), a filter screen (7) is arranged at the box opening at the upper end of the collection box (3), and the scraper (6) corresponds to the filter screen (7).

2. The cooling device of a vacuum welding furnace according to claim 1, characterized in that: A transmission shaft (8) is provided at the output end of the fan (5), and a plurality of scrapers (6) are arranged in a circular array on the transmission shaft (8).

3. The cooling device of a vacuum welding furnace according to claim 1, characterized in that: A slag guiding opening groove (601) is provided on the length direction side of the scraper (6), and a discharge port (602) connected to the slag guiding opening groove (601) is provided on the width direction side of the scraper (6). The height of the inner wall of the upper side of the slag guiding opening groove (601) gradually increases from away from the opening end to the opening end, and the height of the inner wall of the opening end of the slag guiding opening groove (601) is the same as the bottom surface height of the filter screen (7).

4. The cooling device for a vacuum welding furnace according to claim 1, characterized in that: The height of the upper side of the ventilation pipe (4) is higher than the height of the bottom surface of the inner wall of the collection box (3).

5. The cooling device for a vacuum welding furnace according to claim 1, characterized in that: An outer flange (301) is provided at the box opening of the collection box (3), and the outer flange (301) is located on the upper side of the installation box (2).

6. The cooling device for a vacuum welding furnace according to claim 1, characterized in that: A cooling pipe (9) is provided in the installation box (2), and the portion of the cooling pipe (9) located in the installation box (2) is in a continuous U-shaped structure. A cooling liquid storage device is provided on one side of the fuselage body (1), and a circulating pump (10) is provided on one side of the installation box (2). One end of the circulating pump (10) is connected to the cooling liquid storage device, and the two ends of the cooling pipe (9) are respectively connected to the circulating pump (10) and the cooling liquid storage device. The portion of the cooling pipe (9) located in the installation box (2) is sleeved with a heat sink (11), and the heat sink (11) is evenly distributed with heat dissipation holes.

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