Vacuum heating device for assisting processing of nanometer soldering paste

Abstract

The utility model relates to the technical field of nanometer soldering paste processing, and particularly discloses a vacuum heating device for assisting nanometer soldering paste processing, which comprises a heating box, and a feed port and a discharge port are respectively arranged at the top and the bottom end of the heating box; the stirring mechanism comprises a rotating cylinder rotationally connected to the top of the heating box through a rotating shaft, the top end of the rotating cylinder penetrates through the heating box, the interior of the rotating cylinder is rotationally connected with a rotating rod through a bearing, and due to the fact that a driving source is independent, the rotating directions of the stirring rod and an upper inclined rod, a side rod and a lower inclined rod on the outer ring can be controlled to be opposite; an electromagnetic valve is started, a vacuum pump is started after short time delay, so that a vacuum environment is formed in the heating box, the oxygen content is reduced, oxidative deterioration of the nano soldering paste is avoided, meanwhile, vacuum defoaming is utilized, bubbles are reduced, and a molecular sieve filter can intercept raw material splashing particles in the process; meanwhile, steam is effectively filtered, and the product quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to nanometer solder paste processing technical field, specifically disclose a kind of vacuum heating device for helping nanometer solder paste processing. BACKGROUND

[0002] Nanometer solder paste is a kind of material mixed by nanometer metal powder and organic adhesive, with excellent conductivity, high temperature resistance and low temperature thermal expansion coefficient and other advantages.It has wide application in microelectronics, optoelectronics, automotive electronics and other fields, becomes a very promising new type of welding material.

[0003] Chinese patent CN217962370U discloses a kind of heating device for helping solder paste processing, by heating box, feed pipe, screw hole, connecting cover, screw groove, connecting plate, fixed rod and plug, when covering and sealing feed pipe by connecting cover, the connection of connecting cover and feed pipe can be fixed, avoid the position of connecting cover to produce deviation when using and lead to gap, so as to improve the sealing property of feed pipe, avoid heat to discharge through feed pipe, improve the heating efficiency of solder paste.The heating device for helping solder paste processing, by motor, stirring rod, connecting rod, link block, scraper and shaft, when solder paste is heated, material can be stirred, improve the uniformity of solder paste heated, also can scrape the material adhered to the inner wall of heating box, so that material can be maximized, improve the processing efficiency of solder paste.

[0004] But the above-mentioned device heating process, the heat generated by heating wire is blown to heating box by wind fan main body through wind delivery net, solder paste is heated, heating effect is poor;

[0005] Although setting has stirring mechanism, but stirring mechanism structure is single, can only stir in the same direction, stirring effect is general, influence heating efficiency;

[0006] And open type heating soldering agent component is easy to oxidize and deteriorate, volatile solvent inside nanometer solder paste is easy to produce bubble when evaporating. SUMMARY

[0007] The utility model discloses a kind of vacuum heating device for helping nanometer solder paste processing, heating effect is good, avoid nanometer solder paste oxidation and deterioration, simultaneously utilize vacuum defoaming, reduce bubble, improve product quality.

[0008] The utility model is such implementation, a kind of vacuum heating device for helping nanometer solder paste processing, including:

[0009] Heating box, the top and bottom end of the heating box are respectively provided with feed inlet and discharge port;

[0010] The stirring mechanism comprises a rotating drum connected to the top of the heating box through a rotating shaft, the top end of the rotating drum penetrates the heating box and is rotatably connected with a rotating rod inside through a bearing, the outer wall of the rotating drum is fixedly connected with two symmetrically arranged upper inclined rods, the other ends of the two upper inclined rods are fixedly connected with vertically arranged side rods, the lower sides of the opposite sides of the two side rods are fixedly connected with lower inclined rods, and the outer wall of the rotating rod is fixedly connected with a plurality of uniformly distributed stirring rods.

[0011] The vacuum mechanism comprises an air exhaust end pipe fixedly connected to the top of the heating box and communicating with the heating box, an electromagnetic valve and a vacuum pump are arranged on the outer wall of the air exhaust end pipe, and a molecular sieve filter is mounted on the inner side of the air exhaust end pipe and located between the electromagnetic valve and the vacuum pump.

[0012] The heating assembly is used for heating materials inside the heating box.

[0013] The driving mechanism is used for driving the stirring mechanism to rotate.

[0014] As a preferred vacuum heating device for assisting in processing of nano solder paste, the heating assembly comprises a heating jacket fixedly connected to the outer side wall of the heating box, and a plurality of electric heating plates are arranged in the interlayer between the heating jacket and the heating box.

[0015] As a preferred vacuum heating device for assisting in processing of nano solder paste, the driving mechanism comprises a first motor and a second motor mounted on the top of the heating box, a first gear is fixedly connected to the outer wall of the rotating drum, a second gear meshing with the first gear is fixedly connected to the output end of the first motor, a first belt pulley is fixedly connected to the top end of the rotating rod, a mounting bracket is further fixedly connected to the top of the heating box, a second belt pulley is rotatably connected to the upper end of the mounting bracket, the output end of the second motor is fixedly connected with the second belt pulley, and a transmission belt is rotatably connected between the first belt pulley and the second belt pulley.

[0016] As a preferred vacuum heating device for assisting in processing of nano solder paste, the stirring mechanism further comprises two scrapers abutting against the inner wall of the heating box, two telescopic rods and a plurality of uniformly distributed springs are fixedly connected between the scrapers and the side rods, and the plurality of springs are located between the two telescopic rods.

[0017] As a preferred vacuum heating device for assisting in processing of nano solder paste, a vacuum pressure sensor is mounted on the left side of the top end of the inside of the heating box, and temperature sensors are mounted on the upper and lower sides of the inside of the heating box.

[0018] As a kind of vacuum heating device for processing nano soldering paste of the utility model, the electromagnetic valve, vacuum pump, electric heating plate, first motor, second motor, vacuum pressure sensor and temperature sensor are electrically connected with external PLC control system.

[0019] As a kind of vacuum heating device for processing nano soldering paste of the utility model, the transparent observation window is arranged on the front end of the outer wall of the heating box, and the protective shell detachably connected to the top of the heating box is arranged on the outside of the driving mechanism.

[0020] The utility model has the advantages of:

[0021] The plurality of electric heating plates are evenly distributed in the vertical direction, so that the heating inside the heating box is more uniform, the heating efficiency is improved, the driving mechanism simultaneously drives the rotating rod and the rotating drum to rotate, the rotating drum drives the upper inclined rod, the side rod and the lower inclined rod connected thereto to rotate for stirring the inner ring of the heating box, and the rotating rod drives the plurality of stirring rods to stir the outer ring of the heating box, and since the driving sources are independent, the rotating directions of the stirring rods and the upper inclined rod, the side rod and the lower inclined rod of the outer ring are opposite, so that the stirring effect is greatly improved, and the heating effect of the nano soldering paste is further improved.

[0022] By setting the vacuum mechanism, after the nano soldering paste is introduced into the preheated heating box through the feeding port, the electromagnetic valve is opened, the vacuum pump is started after a short delay, a vacuum environment is formed in the heating box, the oxygen content is reduced, the nano soldering paste is prevented from oxidizing and deteriorating, vacuum degassing is utilized to reduce bubbles, the molecular sieve filter can intercept the splashing particles of raw materials, and the steam is effectively filtered, so that the product quality is improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below. In all the drawings, similar elements or parts are generally indicated by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual proportion.

[0024] Fig. 1 It is the overall sectional view structure of the utility model;

[0025] Fig. 2 It is the enlarged structure diagram of a part of the utility model;

[0026] Fig. 3 It is the overall external structure diagram of the utility model.

[0027] The marks in the figure, 1, heating box; 2, rotating drum; 3, rotating rod; 4, upper inclined rod; 5, side rod; 6, lower inclined rod; 7, stirring rod; 8, air exhaust end pipe; 9, electromagnetic valve; 10, molecular sieve filter; 11, vacuum pump; 12, heating jacket; 13, electric heating plate; 14, scraper; 15, telescopic rod; 16, spring; 17, first gear; 18, first belt pulley; 19, first motor; 20, second gear; 21, mounting frame; 22, second belt pulley; 23, second motor; 24, transmission belt; 25, vacuum pressure sensor; 26, temperature sensor; 27, feeding port; 28, discharging port; 29, observation window; 30, protective shell. DETAILED DESCRIPTION

[0028] The utility model will be further explained in connection with the drawings and specific embodiments, to help understanding the contents of the utility model. The method used in the utility model is conventional method if no special provision, and the raw materials and devices used are conventional market products if no special provision.

[0029] Please refer to Figs. 1-3 A vacuum heating device for processing nano soldering paste, comprising:

[0030] The heating box 1 is provided with a feeding port 27 and a discharging port 28 at the top and the bottom end respectively.

[0031] The stirring mechanism comprises a rotating drum 2 rotatably connected to the top of the heating box 1 through a rotating shaft, a rotating rod 3 rotatably connected inside the rotating drum 2 through a bearing, two symmetrical upper inclined rods 4 fixedly connected to the outer wall of the rotating drum 2, a vertical side rod 5 fixedly connected to the other end of each of the two upper inclined rods 4, a lower inclined rod 6 fixedly connected to the lower side of each of the two side rods 5, and a plurality of evenly distributed stirring rods 7 fixedly connected to the outer wall of the rotating rod 3.

[0032] The vacuum mechanism comprises an air exhaust end pipe 8 fixedly connected to the top of the heating box 1 and communicating with the heating box 1, an electromagnetic valve 9 and a vacuum pump 11 provided on the outer wall of the air exhaust end pipe 8, and a molecular sieve filter 10 installed on the inner side of the air exhaust end pipe 8, with the molecular sieve filter 10 located between the electromagnetic valve 9 and the vacuum pump 11.

[0033] The heating assembly is used for heating the materials inside the heating box 1.

[0034] The driving mechanism is used for driving the stirring mechanism to rotate.

[0035] In the embodiment, the nano soldering paste is introduced into the preheated heating box 1 through the feeding port 27, the electric heating plates 13 are started, the plurality of electric heating plates 13 are uniformly distributed in the vertical direction, the heating in the heating box 1 is more uniform, the heating efficiency is improved, meanwhile, the first motor 19 and the second motor 23 are started, the second gear 20 and the second belt pulley 22 are driven to rotate, the second gear 20 drives the first gear 17 to rotate, the first belt pulley 18 is driven to rotate through the transmission belt 24, so that the rotating rod 3 and the rotating drum 2 are simultaneously rotated, the rotating drum 2 drives the upper inclined rod 4, the side rod 5 and the lower inclined rod 6 connected therewith to rotate to stir the outer circle of the heating box 1, and the rotating rod 3 drives the plurality of stirring rods 7 to stir the inner circle of the heating box 1, and since the driving sources are independent, the rotating directions of the stirring rods 7 and the upper inclined rod 4, the side rod 5 and the lower inclined rod 6 of the outer circle are opposite, so that the stirring effect is greatly improved, and the heating effect of the nano soldering paste is further improved.

[0036] By arranging the vacuum mechanism, after the nano soldering paste is introduced into the preheated heating box 1 through the feeding port 27, the electromagnetic valve 9 is opened, the vacuum pump 11 is started after a short time delay, so that a vacuum environment is formed in the heating box 1, the oxygen content is reduced, the nano soldering paste is prevented from being oxidized and deteriorated, the vacuum degassing is utilized to reduce the bubbles, the molecular sieve filter 10 can intercept the splashed particles of raw materials, and the steam is effectively filtered, so that the product quality is improved.

[0037] As a technical optimization scheme of the utility model, the heating assembly comprises a heating jacket 12 fixedly connected to the outer side wall of the heating box 1, and a plurality of electric heating plates 13 are arranged in the interlayer between the heating jacket 12 and the heating box 1.

[0038] In the embodiment, the plurality of electric heating plates 13 are arranged in the interlayer between the heating jacket 12 and the heating box 1, and the plurality of electric heating plates 13 are uniformly distributed in the vertical direction, so that the heating in the heating box 1 is more uniform, and the heating efficiency is improved.

[0039] As a technical optimization scheme of the utility model, the driving mechanism comprises a first motor 19 and a second motor 23 installed on the top of the heating box 1, the outer wall of the rotating drum 2 is fixedly connected with a first gear 17, the output end of the first motor 19 is fixedly connected with a second gear 20 engaged with the first gear 17, the top end of the rotating rod 3 is fixedly connected with a first belt pulley 18, the top of the heating box 1 is further fixedly connected with a mounting bracket 21, the upper end of the mounting bracket 21 is rotatably connected with a second belt pulley 22, the output end of the second motor 23 is fixedly connected with the second belt pulley 22, and the first belt pulley 18 and the second belt pulley 22 are rotatably connected with a transmission belt 24.

[0040] In the embodiment, the first motor 19 and the second motor 23 are started simultaneously, the second gear 20 and the second belt pulley 22 are driven to rotate, the second gear 20 drives the first gear 17 to rotate, and the second belt pulley 22 drives the first belt pulley 18 to rotate through the transmission belt 24, so that the rotating rod 3 and the rotating drum 2 are simultaneously rotated.

[0041] As a technical optimization scheme of the utility model, the stirring mechanism further comprises two scraping plates 14 abutting against the inner wall of the heating box 1, two telescopic rods 15 and a plurality of uniformly distributed springs 16 are fixedly connected between the scraping plates 14 and the side rods 5, and the plurality of springs 16 are located between the two telescopic rods 15.

[0042] In the embodiment, the scraping plates 14 are arranged, the side rods 5 drive the scraping plates 14 to scrape the inner wall of the heating box 1 when the side rods 5 rotate, so that the raw materials are prevented from adhering, and the stirring effect is improved, the telescopic rods 15 and the springs 16 are used to dynamically adjust the scraping plates 14, and the scraping plates 14 are prevented from being stuck and damaged.

[0043] As a technical optimization scheme of the utility model, the vacuum pressure sensor 25 is installed at the left top end of the inside of the heating box 1, and the temperature sensors 26 are installed on the upper and lower sides of the inside of the heating box 1.

[0044] In the embodiment, the vacuum pressure sensor 25 is used to monitor the pressure in the heating box 1 in real time, so that the pressure is adjusted by the external PLC control system, the pressure is kept stable, and the two temperature sensors 26 are used to monitor the temperature in different zones, so that the heating temperature is conveniently adjusted.

[0045] As a technical optimization scheme of the utility model, the electromagnetic valve 9, the vacuum pump 11, the electric heating plate 13, the first motor 19, the second motor 23, the vacuum pressure sensor 25 and the temperature sensors 26 are electrically connected with the external PLC control system.

[0046] In the embodiment, the PLC control system receives the signals of the vacuum pressure sensor 25 and the temperature sensors 26, and simultaneously controls the electromagnetic valve 9, the vacuum pump 11, the electric heating plate 13, the first motor 19 and the second motor 23.

[0047] As a technical optimization scheme of the utility model, the transparent observation window 29 is arranged at the front end of the outer wall of the heating box 1, and the protective shell 30 detachably connected to the top of the heating box 1 is arranged on the outer side of the driving mechanism.

[0048] In the embodiment, the observation window 29 is used to conveniently observe the inside of the heating box 1, and the protective shell 30 is used to protect the driving mechanism.

[0049] The working principle and use process of the utility model: when using, the nano soldering paste is introduced into the inside of the preheated heating box 1 through the feeding port 27, the electromagnetic valve 9 is opened, the vacuum pump 11 is started after a short time delay, the vacuum environment is formed in the inside of the heating box 1, then the electric heating plate 13 is started, the multiple electric heating plates 13 are evenly distributed in the vertical direction, the heating in the inside of the heating box 1 is more uniform, the heating efficiency is improved, the first motor 19 and the second motor 23 are started at the same time, the second gear 20 and the second belt pulley 22 are driven to rotate respectively, the second gear 20 drives the first gear 17 meshing therewith to rotate, the first belt pulley 18 is driven to rotate by the transmission belt 24 through the second belt pulley 22, thereby the rotating rod 3 and the rotating cylinder 2 are driven to rotate at the same time, the rotating cylinder 2 drives the upper inclined rod 4, the side rod 5 and the lower inclined rod 6 connected thereto to rotate to stir the outer circle in the inside of the heating box 1, and the rotating rod 3 drives the multiple stirring rods 7 to stir the inner circle in the inside of the heating box 1, and because the driving sources are independent, the rotating directions of the stirring rods 7 and the upper inclined rod 4, the side rod 5 and the lower inclined rod 6 of the outer circle are opposite, thereby the stirring effect is greatly improved, the heating effect of the nano soldering paste is further improved, after the process is completed, high-purity nitrogen is injected into the inside of the heating box 1 to break the vacuum, finally the heating raw material is led out from the discharge port 28.

[0050] In the description of the utility model, it is understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inside", "outside", "back", "middle" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a specific orientation, structure and operation, therefore it cannot be understood as a limitation on the utility model.

[0051] The above-mentioned is only a specific embodiment of the utility model, which cannot limit the scope of the utility model, so the replacement of equivalent components or equivalent changes and modifications made according to the utility model patent protection range should still belong to the scope covered by the utility model claims.

Claims

1. A vacuum heating device for processing of nano-solder paste aid, characterized by: Include: Heating box (1), the top and bottom end of the heating box (1) are respectively provided with feeding port (27) and discharge port (28); Stirring mechanism, the stirring mechanism includes rotating drum (2) which is rotatably connected to the top of heating box (1) by rotating shaft, the top of rotating drum (2) penetrates heating box (1) and is rotatably connected with rotating rod (3) in the inside through bearing, the outer wall of rotating drum (2) is fixedly connected with two symmetrically arranged upper inclined rods (4), the other end of two upper inclined rods (4) is fixedly connected with vertically arranged side rod (5), the lower side of the opposite side of two side rods (5) is fixedly connected with lower inclined rod (6), the outer wall of rotating rod (3) is fixedly connected with multiple evenly distributed stirring rods (7); Vacuum mechanism, the vacuum mechanism includes exhaust end pipe (8) which is fixedly connected to the top of heating box (1) and communicates with heating box (1), the outer wall of exhaust end pipe (8) is provided with electromagnetic valve (9) and vacuum pump (11), the inner side of exhaust end pipe (8) is provided with molecular sieve filter (10), molecular sieve filter (10) is located between electromagnetic valve (9) and vacuum pump (11); Heating assembly, for heating the material in the inside of heating box (1); Driving mechanism, for driving the rotation of stirring mechanism.

2. The vacuum heating device for processing nano-solder paste according to claim 1, characterized in that: The heating assembly includes heating jacket (12) which is fixedly connected to the outer side wall of heating box (1), a plurality of electric heating plates (13) are arranged in the interlayer between heating jacket (12) and heating box (1).

3. The vacuum heating device for processing nano-solder paste according to claim 2, characterized in that: The driving mechanism includes first motor (19) and second motor (23) installed on the top of heating box (1), the outer wall of rotating drum (2) is fixedly connected with first gear (17), the output end of first motor (19) is fixedly connected with second gear (20) engaged with first gear (17), the top end of rotating rod (3) is fixedly connected with first belt pulley (18), the top of heating box (1) is also fixedly connected with mounting bracket (21), the upper end of mounting bracket (21) is rotatably connected with second belt pulley (22), the output end of second motor (23) is fixedly connected with second belt pulley (22), first belt pulley (18) and second belt pulley (22) are rotatably connected with transmission belt (24) therebetween.

4. The vacuum heating device for processing nano-solder paste according to claim 1, characterized in that: The stirring mechanism further includes two scraping plates (14) abutting against the inner wall of heating box (1), two telescopic rods (15) and multiple evenly distributed springs (16) are fixedly connected between scraping plate (14) and side rod (5), multiple springs (16) are located between two telescopic rods (15).

5. The vacuum heating device for processing nano-solder paste according to claim 3, characterized in that: Vacuum pressure sensor (25) is installed on the inside top left side of heating box (1), temperature sensor (26) is installed on the inside upper and lower sides of heating box (1).

6. The vacuum heating device for processing nano-solder paste according to claim 5, characterized in that: The electromagnetic valve (9), vacuum pump (11), electric heating plate (13), first motor (19), second motor (23), vacuum pressure sensor (25) and temperature sensor (26) are electrically connected with external PLC control system.

7. The vacuum heating device for processing nano-solder paste according to claim 1, characterized in that: The outer wall front end of the heating box (1) is provided with a transparent observation window (29), and the outer side of the driving mechanism is provided with a protective shell (30) which is detachably connected to the top of the heating box (1).

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