Cold plate type scaling powder recovery device

Abstract

The utility model discloses a cold plate type scaling powder recovery device, relates to the technical field of semiconductor welding, and aims to solve the problems that a cooling pipe is adopted to cool scaling powder at present, but the contact area of the cooling pipe is limited, so that the cooling efficiency is low, and the cooling pipe is spiral, so that the cooling efficiency is low. The recovery box comprises a recovery box body, a nitrogen inlet used for injecting nitrogen is formed in the middle of the top of one side of the recovery box body, and a plurality of air inlets are formed in the top end of the recovery box body at equal intervals; a mounting groove is formed in the side, away from the air inlet, of the top of the recycling box body, and a guide structure communicated with the mounting groove is fixedly arranged at the top of the recycling box body. The cooling contact area between the recycling box body and soldering flux gas is increased through the cooling plate, the cooling efficiency is greatly improved, and the better gas filtering effect is achieved; and the maintenance is simpler and more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of semiconductor soldering, and more specifically, to a cold plate type flux recovery device. Background Technique

[0002] With the development of semiconductor technology, electronic technology is developing towards high power, high density and integration, and higher and more comprehensive reliability requirements are put forward for the packaging soldering of high-power devices.

[0003] At present, solder paste soldering is the most commonly used soldering method. After the solder paste is heated, the internal flux will vaporize. When these gases are not recovered and exist in the soldering furnace for a long time, they will cool and solidify on the moving parts, causing them to jam and unable to operate, and may form droplets that fall on the product and cause scrapping.

[0004] The existing technology generally uses a cooling pipe to cool the flux. However, the contact area of the cooling pipe is limited, resulting in low cooling efficiency. And because the cooling pipe is spiral, it is difficult to clean the solidified flux on the surface during maintenance. In view of this, we propose a cold plate type flux recovery device. Content of the Utility Model

[0005] The purpose of the utility model is to overcome the deficiencies of the existing technology and meet the actual needs, and provide a cold plate type flux recovery device to solve the technical problems that the current cooling pipe is used to cool the flux, but the contact area of the cooling pipe is limited, resulting in low cooling efficiency, and because the cooling pipe is spiral, it is difficult to clean the solidified flux on the surface during maintenance.

[0006] To solve the above technical problems, the utility model provides the following technical solutions: a cold plate type flux recovery device, including a recovery box body;

[0007] A nitrogen gas inlet for injecting nitrogen gas is centrally provided at the top of one side of the recovery box body, and a plurality of air inlets are equidistantly arranged at the top end of the recovery box body;

[0008] An installation groove is provided at the top of the recovery box body on the side far from the air inlet, and a guiding structure communicating with the installation groove is fixedly provided at the top of the recovery box body. An air outlet is arranged on the top of the recovery box body on the side facing the installation groove;

[0009] Filter cotton for preliminarily filtering the flux gas is arranged at the inner top of the recovery box body, and two cooling plates for condensing the flux gas are symmetrically arranged at the inner bottom of the recovery box body, and a storage tank is formed at the bottom of the recovery box body;

[0010] The cooling plate is provided with an S-shaped condensation groove, and both ends of the condensation groove are connected with interfaces. A plurality of ventilation holes for allowing the flux after condensation to pass through are equidistantly arranged on both sides of the top of the cooling plate.

[0011] Through the arrangement of the filter cotton and the two cooling plates in the main body of the recovery box of the present utility model, after the guiding structure guides the flux gas to enter the main body of the recovery box through the air inlet, the nitrogen environment in the main body of the recovery box is ensured through the nitrogen gas inlet, so that the flux gas is filtered by the filter cotton, and then the flux gas is condensed by the two cooling plates. The condensed gas is discharged through the air outlet, and the flux generated by condensation flows into the storage tank at the bottom of the main body of the recovery box through a plurality of ventilation holes on the cooling plate, and then is discharged through the flux discharge port. The cooling contact area with the flux gas is increased by the cooling plate, the cooling efficiency is greatly improved, and the gas filtering effect is better, and the maintenance is more simple and convenient.

[0012] Preferably, the guiding structure includes a wind wheel box. A motor is fixedly arranged at the center of the top of the wind wheel box, and a wind wheel main body for guiding the flow of the flux gas is fixedly installed at one end where the motor shaft extends into the wind wheel box.

[0013] Preferably, an inspection opening is arranged on one side of the main body of the recovery box, and a flux discharge port communicating with the storage tank is arranged at the center of the bottom end of the main body of the recovery box facing the nitrogen gas inlet.

[0014] Preferably, a recovery box cover plate covering the inspection opening is detachably installed on one side of the main body of the recovery box, a sealing rubber strip abutting against the recovery box cover plate is arranged at the inspection opening, and buckles connecting to the recovery box cover plate are arranged on both sides of the main body of the recovery box.

[0015] Preferably, a plurality of through holes are equidistantly arranged on one side of the recovery box cover plate, and the interface penetrates through the through holes.

[0016] Compared with the prior art, the beneficial effects of the present utility model are:

[0017] 1. In the present utility model, through the arrangement of the filter cotton and two cooling plates inside the main body of the recovery box, after the guiding structure guides the flux gas to enter the main body of the recovery box through the air inlet, the nitrogen gas inlet ensures that the inside of the main body of the recovery box is in a nitrogen environment. Thus, the flux gas is filtered by the filter cotton, and then the flux gas is condensed by the two cooling plates. The condensed gas is discharged through the air outlet, and the flux generated by condensation flows into the storage tank at the bottom of the main body of the recovery box through several ventilation holes on the cooling plates, and then is discharged through the flux discharge port. The cooling contact area with the flux gas is increased by the cooling plates, the cooling efficiency is greatly improved, and it has a better gas filtration effect, and the maintenance is simpler and more convenient.

[0018] 2. In the present utility model, through the arrangement of the filter cotton, the flux gas is firstly filtered by the filter cotton, which can reduce the content of the flux in the flux gas. By regularly replacing the filter cotton, the problem of time-consuming and laborious cleaning in the later stage caused by the flux can be solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 is a cross-sectional view of the present utility model.

[0021] Description of the reference numerals in the drawings:

[0022] 1. Main body of the recovery box; 2. Air inlet; 3. Buckle; 4. Recovery box cover; 5. Wind wheel box; 6. Air outlet; 7. Motor; 8. Nitrogen gas inlet; 9. Filter cotton; 10. Cooling plate; 11. Flux discharge port; 12. Wind wheel main body. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] As Figures 1 to 2 shown, a cold plate type flux recovery device involved in the present utility model includes a main body 1 of the recovery box;

[0024] At the top center on one side of the main body 1 of the recovery box, a nitrogen gas inlet 8 for injecting nitrogen gas is provided, and nitrogen gas is connected during use to ensure that the inside is in a nitrogen atmosphere. A plurality of air inlets 2 are equidistantly arranged at the top end of the main body 1 of the recovery box;

[0025] In an embodiment of the present utility model, to solve the problem that the later cleaning is time-consuming and laborious due to the flux, an installation groove is formed on one side of the top of the recycling box body 1 away from the air inlet 2, and a guiding structure communicating with the installation groove is fixedly arranged on the top of the recycling box body 1. An air outlet 6 is arranged on one side of the top of the recycling box body 1 facing the installation groove. A filter cotton 9 for preliminarily filtering the flux gas is arranged on the inner top of the recycling box body 1. The filter cotton 9 is the first to contact the flux gas, filters a part of the flux, improves the filtering effect, and the filter cotton 9 can be replaced at any time, reducing the maintenance time. Moreover, two cooling plates 10 for condensing the flux gas are symmetrically arranged at the inner bottom of the recycling box body 1, and a storage tank is formed at the bottom of the recycling box body 1. Through the arrangement of the filter cotton 9, the flux gas is firstly filtered by the filter cotton 9, the content of the flux in the flux gas can be reduced, and through regular replacement, the problem that the later cleaning is time-consuming and laborious due to the flux can be solved.

[0026] In an embodiment of the present utility model, to improve the cooling efficiency of the flux, an S-shaped condensation groove is formed in the cooling plate 10, and both ends of the condensation groove are communicated with interfaces. A plurality of ventilation holes for allowing the condensed flux to pass through are equidistantly arranged on both sides of the top end of the cooling plate 10. Through the arrangement of the filter cotton 9 and the two cooling plates 10 in the recycling box body 1, when the guiding structure guides the flux gas to enter the recycling box body 1 through the air inlet 2, the inside of the recycling box body 1 is ensured to be in a nitrogen environment through the nitrogen gas connection port 8. Thus, the flux gas is filtered by the filter cotton 9, and then the flux gas is condensed by the two cooling plates 10. The condensed gas is discharged through the air outlet 6, while the condensed flux flows into the storage tank at the bottom of the recycling box body 1 through the plurality of ventilation holes on the cooling plate 10 and is then discharged through the flux discharge port 11. The cooling contact area with the flux gas is increased by the cooling plate 10, the cooling efficiency is greatly improved, the gas filtering effect is better, and the maintenance is simpler and more convenient.

[0027] In an embodiment of the present utility model, to improve the flow rate of the gas, the guiding structure includes a wind wheel box 5. A motor 7 is fixedly arranged at the center of the top end of the wind wheel box 5, and a wind wheel main body 12 for guiding the flow of the flux gas is fixedly installed at one end where the motor shaft of the motor 7 extends into the wind wheel box 5. By starting the motor 7 to drive the wind wheel main body 12 arranged in the wind wheel box 5 to rotate, the flux gas can be sucked into the recycling box body 1 through a plurality of air inlets 2, facilitating the filtering and improving the flow rate of the gas.

[0028] In an embodiment of the present utility model, to facilitate maintenance and cleaning, a maintenance opening is formed on one side of the recycling box body 1, and a flux discharge port 11 communicating with the storage tank is centrally arranged at the bottom end of the recycling box body 1 on the side facing the nitrogen gas connection port 8. When performing maintenance and cleaning, it can be opened to allow the flux to flow out naturally.

[0029] Preferably, in the embodiment of the present utility model, to avoid the situation of excessive oxygen concentration inside the main body 1 of the recovery box, a recovery box cover plate 4 covering the maintenance opening is detachably installed on one side of the main body 1 of the recovery box, and a sealing strip abutting against the recovery box cover plate 4 is arranged at the maintenance opening. Buckles 3 connected to the recovery box cover plate 4 are arranged on both sides of the main body 1 of the recovery box. A plurality of through holes are equidistantly formed on one side of the recovery box cover plate 4, and the interface passes through the through holes. Since the inside of the main body 1 of the recovery box needs to be in a nitrogen environment, the sealing of the main body 1 of the recovery box is particularly important, otherwise it will affect the oxygen concentration inside. The cooperation of a plurality of buckles 3 and the sealing strip realizes the sealing between the recovery box cover plate 4 and the maintenance opening, and can avoid the situation of excessive oxygen concentration inside.

[0030] Working principle: This embodiment provides a cold plate type flux recovery device. When in use, the motor 7 drives the wind wheel main body 12 to rotate, sucking the flux gas into the main body 1 of the recovery box through a plurality of air inlets 2, and injecting nitrogen into the main body 1 of the recovery box through the nitrogen inlet 8 by an external gas supply device, ensuring that the inside of the main body 1 of the recovery box is in a nitrogen environment, so that the filter cotton 9 can preliminarily filter the flux gas to reduce the content of flux in the flux gas. Then, the flux gas is condensed by two cooling plates 10. When condensing, a coolant is injected into the condensation tank inside the cooling plate 10 by an external device, and the flux gas is condensed by the cooling plate 10. The condensed gas is discharged through the air outlet 6, and the flux generated by condensation flows into the storage tank at the bottom of the main body 1 of the recovery box through a plurality of vent holes on the cooling plate 10, and then is discharged through the flux discharge port 11. The cooling plate 10 increases the cooling contact area with the flux gas, greatly improves the cooling efficiency, has a better gas filtering effect, and is more simple and convenient for maintenance.

[0031] The embodiments disclosed in the embodiments of the present utility model are the preferred embodiments, but are not limited thereto. Those of ordinary skill in the art can easily understand the spirit of the present utility model based on the above embodiments and make different extensions and changes. However, as long as they do not depart from the spirit of the present utility model, they are within the protection scope of the present utility model.

Claims

1. A cold plate type flux recovery device, characterized in that It includes a recycling bin main body (1); At the top center of one side of the recycling bin main body (1), a nitrogen gas inlet (8) for injecting nitrogen gas is provided, and a number of air inlets (2) are arranged at equal intervals at the top end of the recycling bin main body (1); On one side of the top of the recycling bin main body (1) away from the air inlets (2), an installation groove is provided, and a guiding structure communicating with the installation groove is fixedly arranged at the top of the recycling bin main body (1). An air outlet (6) is arranged on one side of the top of the recycling bin main body (1) facing the installation groove; At the inner top of the recycling bin main body (1), a filter cotton (9) for preliminarily filtering the flux gas is arranged. At the inner bottom of the recycling bin main body (1), two cooling plates (10) for condensing the flux gas are symmetrically arranged, and a storage tank is formed at the bottom of the recycling bin main body (1); An S-shaped condensation groove is formed in the cooling plate (10), both ends of the condensation groove are communicated with interfaces, and a number of ventilation holes for allowing the flux after condensation to pass through are arranged at equal intervals on both sides of the top end of the cooling plate (10).

2. The cold plate type flux recovery device according to claim 1, wherein, The guiding structure includes a wind wheel box (5). At the center of the top end of the wind wheel box (5), a motor (7) is fixedly arranged, and the motor shaft of the motor (7) extends to one end of the wind wheel box (5) and is fixedly installed with a wind wheel main body (12) for guiding the flow of the flux gas.

3. A cold plate type flux recovery device according to claim 1, characterized in that, An inspection opening is provided on one side of the recycling bin main body (1), and a flux discharge port (11) communicating with the storage tank is provided at the center of the bottom end of the recycling bin main body (1) facing the nitrogen gas inlet (8).

4. A cold plate type flux recovery device according to claim 1, characterized in that, A recycling bin cover plate (4) covering the inspection opening is detachably installed on one side of the recycling bin main body (1). A sealing rubber strip abutted against the recycling bin cover plate (4) is arranged at the inspection opening, and buckles (3) connected to the recycling bin cover plate (4) are arranged on both sides of the recycling bin main body (1); 5. A cold plate type flux recovery device according to claim 4, wherein, A number of through holes are arranged at equal intervals on one side of the recycling bin cover plate (4), and the interfaces are arranged through the through holes.

Images