CN107570277B - Production line of inorganic adhesive of electronic paste - Google Patents
Production line of inorganic adhesive of electronic paste Download PDFInfo
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- CN107570277B CN107570277B CN201710958960.2A CN201710958960A CN107570277B CN 107570277 B CN107570277 B CN 107570277B CN 201710958960 A CN201710958960 A CN 201710958960A CN 107570277 B CN107570277 B CN 107570277B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses a production line of inorganic adhesive for electronic paste, which can realize continuous addition, stirring and heating of raw materials of the inorganic adhesive and continuous production of the inorganic adhesive in the production process of the inorganic adhesive for electronic paste, improve the production efficiency and reduce the production cost. The production line of the inorganic adhesive of the electronic paste comprises a feeding, stirring and heating device of inorganic adhesive raw materials, a water-cooling continuous sheet rolling machine, a ball mill and an ultrasonic mixing device; the feeding stirring heating device, the water-cooling continuous flaker, the ball mill and the ultrasonic mixing device are sequentially arranged. The production line of the electronic paste inorganic adhesive can simplify the process steps from feeding of inorganic adhesive raw materials to forming of liquid raw materials, can reduce the labor intensity of workers, improves the working efficiency and reduces the production cost.
Description
Technical Field
The invention relates to the field of production of inorganic adhesives of electronic paste, in particular to a production line and a process of the inorganic adhesives of the electronic paste.
Background
It is well known that: the sintering type electronic paste mainly comprises four major parts of a functional phase, an inorganic binder, an organic binder and an auxiliary agent. The function phase acts as follows: the functional phase is the main body of the electronic paste; the function of the inorganic adhesive: the inorganic binder plays a role in fixing conductive particles in the electronic paste, and glass powder is used as a more inorganic binder phase. The inorganic binder plays a very important role in the electronic paste and has influence on the mechanical property, the electrical property and the service life of the conductive film. Proper melting point, matched thermal expansion coefficient, good wettability and large adhesive force.
The organic binding phase acts as: the organic binder is used as a carrier of the conductive phase and the inorganic binder in the electronic paste, and is gradually volatilized, burned and removed in the high-temperature sintering process. The main performance requirement is proper viscosity, excellent thixotropic property, good wettability and gradient volatilization.
Wherein the existing production technology of the inorganic adhesive is to respectively complete each process step of the inorganic adhesive through a plurality of devices,
therefore, continuous production cannot be realized, so that the production efficiency is low and the production cost is high. Meanwhile, in the process of mixing the raw materials of the inorganic adhesive according to the proportion and then heating, the inorganic adhesive is realized through a plurality of devices, so that the operation is complex and the production efficiency is low.
Disclosure of Invention
The invention aims to solve the technical problem of providing a production line of the inorganic adhesive of the electronic paste, which can realize continuous addition, stirring and heating of the raw materials of the inorganic adhesive and continuous production of the inorganic adhesive, improve the production efficiency and reduce the production cost in the production process of the inorganic adhesive of the electronic paste.
The technical scheme adopted for solving the technical problems is as follows: the production line of the inorganic adhesive of the electronic paste comprises a feeding stirring heating device, a water-cooling continuous sheet rolling machine, a ball mill and an ultrasonic mixing device of the inorganic adhesive raw material;
the feeding, stirring and heating device comprises a base, a cross beam is arranged above the base, a telescopic device is arranged between at least one of two ends of the cross beam and the base, a stirring shaft is arranged in the middle of the cross beam, and stirring blades are arranged on the stirring shaft; a driving motor for driving the stirring shaft to rotate is arranged above the cross beam;
the base is provided with a turntable which rotates around the vertical central line of a telescopic device arranged at one end of the cross beam, the turntable is provided with three heating crucibles, and the heating crucibles are uniformly distributed on the turntable along the circumference; the rotary table rotates to enable the stirring shaft to be positioned right above the heating crucible;
the turntable is provided with a groove matched with the heating crucible, and the heating crucible is arranged in the groove; the bottom of the groove is provided with a heat conducting layer penetrating to the bottom surface of the turntable; the base is provided with a heating device;
a feeding device is arranged above any one of the heating crucibles on the turntable, the feeding device comprises a frame and a spiral conveyer pipe, a discharge end of the spiral conveyer pipe is positioned right above the heating crucible, a material collecting box is arranged at a feed end of the spiral conveyer pipe, and a plurality of material feeding pipes are arranged on the material collecting box;
the projection points on the turntable are sequentially and uniformly distributed along the turntable clockwise or anticlockwise;
the bottom of the heating crucible is provided with a first discharging pipe, and a valve is arranged on the first discharging pipe;
a liquid outlet cover is arranged above an inlet of a cooling device of the water-cooling continuous sheet rolling machine, and a vacuum pump is arranged above the liquid outlet cover; a liquid inlet pipe is arranged on the liquid outlet cover, one end of the liquid inlet pipe is communicated with the liquid outlet cover, and the other end of the liquid inlet pipe is provided with a liquid collecting box with an opening on the upper surface;
when the turntable rotates to the position, on the turntable, of a heating crucible under the stirring shaft, one end of a first discharging pipe of the heating crucible, which is positioned above the heating device, on the turntable is communicated with the heating crucible, and the other end of the first discharging pipe is positioned right above an opening on the upper surface of the liquid collecting box;
a conveying device is arranged below a first discharge hole of the water-cooling continuous sheet rolling machine; a material receiving funnel is arranged at a material inlet of the ball mill, and a second material outlet of the ball mill is positioned right above an inlet of the ultrasonic mixing device; the conveying device conveys the material at the first discharge port to the receiving hopper.
Further, be provided with the recess that matches with heating crucible on the carousel, be provided with the spacing boss that corresponds with the recess on the circumference of carousel, be provided with the stopper that the carousel rotated the stirring axle and block spacing boss when being located heating crucible directly over on the base, the stopper passes through locking bolt and is articulated with the base.
Further, the ball mill comprises a ball mill cylinder and a collecting bin; one end of the collecting bin is communicated with the ball milling cylinder through a discharging grate plate; the other end of the collecting bin is communicated with the fan through an air pipe, and a material pipe is arranged at the lower part of the collecting bin; one end of the ball milling cylinder is communicated with the collecting bin, the other end of the ball milling cylinder is provided with an end cover, and the end cover is provided with an air guiding pipe and a first feeding pipe;
a steel ball fixing frame is arranged in the ball grinding cylinder; the steel ball fixing frame comprises at least two compartment grate plates, a space is reserved between every two adjacent compartment grate plates, and a supporting frame is arranged on the edge of each compartment grate plate; the bin-separating grid plates are uniformly distributed on the support frame along the length direction of the support frame; the support frame is tightly attached to the inner wall of the ball milling cylinder; an arc steel ball supporting plate is arranged on the compartment grate plate; the steel ball supporting plate is tightly attached to the inner wall of the ball grinding cylinder;
one end of the supporting frame is connected with the discharging grate plate, and the other end of the supporting frame is connected with the end cover; the compartment grate plate divides the ball milling cylinder into a plurality of chambers;
the through holes are formed in the partition grid plates, the sizes of the through holes in the same partition grid plate are the same, and the diameters of the through holes in different partition grid plates are sequentially reduced from one end of the ball mill barrel, on which the end cover is arranged, to the other end of the ball mill barrel;
the ball mill is characterized in that steel balls are arranged in a plurality of cavities of the inner cavity of the ball mill barrel, which are separated by the compartment grate plate, the diameters of the steel balls in the same cavity are the same, and the diameters of the steel balls in different cavities are sequentially reduced from one end of the ball mill barrel, which is provided with an end cover, to the other end of the ball mill barrel.
Further, the ultrasonic mixing device comprises a mixing tube; the mixing pipe is sequentially divided into a feeding section, a mixing section, a transition section and a discharging section from one end to the other end;
one end of the feeding section is provided with a blower; the air outlet of the air blower is communicated with one end of the feeding section; the feeding section is provided with a second feeding pipe which is communicated with the inner cavity of the feeding section, and the geometric center line of a feeding hole of the second feeding pipe in the feeding section is vertical to the geometric center line of the mixing pipe;
a baffle is arranged in the feeding section and is positioned between an air outlet of the blower and a feed inlet of the second feeding pipe in the feeding section; the partition plate is provided with uniformly distributed ventilation holes;
an ultrasonic transmitter is arranged on the mixing section, and a transmitting head of the ultrasonic transmitter extends into the mixing pipe; the discharging section is provided with a discharging pipe;
the feeding pipe in the feeding section is provided with a blowing cavity right below a feeding hole in the feeding section, the blowing cavity is communicated with an air outlet of a blower, and the upper surface of the blowing cavity is provided with a blowing hole communicated with the inner cavity of the feeding section; the mixing tube is a circular tube, the emitting head is cross-shaped, and the center of the cross is positioned on the geometric center line of the mixing tube.
Further, a contact sensor is arranged on the limiting block, and the contact sensor controls the heating device to heat.
Preferably, the conveying device adopts a screw conveyor or a belt conveyor.
Preferably, the water-cooling continuous sheet rolling machine adopts a heat-resistant stainless steel water-cooling continuous sheet rolling machine.
Preferably, the ball mill adopts a steel jade tank ball mill.
The beneficial effects of the invention are as follows: according to the production line of the electronic paste inorganic adhesive, the raw materials are fed, stirred and heated simultaneously through the feeding, stirring and heating device, and meanwhile, a discharging pipe is arranged at an outlet of the heating crucible, and a valve is arranged on the discharging pipe; the liquid raw material flows into the liquid collecting box, one end of the liquid inlet pipe is communicated with the liquid outlet cover, the other end of the liquid inlet pipe is communicated with the liquid collecting box, and a vacuum pump is arranged above the liquid outlet cover; the liquid outlet cover covers the inlet of a cooling device of the water-cooling continuous rolling machine; a conveying device is arranged below a discharge hole of the water-cooling continuous sheet rolling machine; the conveying device conveys materials at the discharge port to the receiving hopper. Therefore, the continuous transportation of materials among the devices can be realized, and the continuous production of the inorganic adhesive of the electronic paste is realized. Therefore, the production line of the electronic paste inorganic adhesive can simplify the process steps from feeding of inorganic adhesive raw materials to forming of liquid raw materials, can reduce the labor intensity of workers, improves the working efficiency and reduces the production cost.
Drawings
FIG. 1 is a schematic diagram of an installation of a production line of an inorganic adhesive for electronic paste according to an embodiment of the present invention;
FIG. 2 is a schematic top view of an installation of an electronic paste inorganic adhesive production line in accordance with an embodiment of the present invention;
FIG. 3 is a front view of a heating device for stirring and feeding materials in an embodiment of the invention;
FIG. 4 is an enlarged view of a portion of FIG. 1A;
FIG. 5 is a schematic view of a stop block boss of a stop block in an embodiment of the present invention;
FIG. 6 is an enlarged view of a portion of B in FIG. 2;
FIG. 7 is a schematic view of a ball mill according to an embodiment of the present invention;
fig. 8 is a perspective view of a steel ball fixing frame in an embodiment of the present invention;
FIG. 9 is a schematic view of an ultrasonic mixing device according to an embodiment of the present invention;
FIG. 10 is a cross-sectional view of C-C of FIG. 9;
the figures indicate: 1-feeding stirring and heating device, 11-base, 12-turntable, 13-beam, 14-driving motor, 15-stirring shaft, 151-stirring blade, 16-expansion device, 17-heating crucible, 171-discharging pipe, 172-valve, 18-heating device, 19-heat conducting layer, 2-feeding device, 21-frame, 22-screw conveyor pipe, 23-material collecting box, 24-material feeding pipe, 3-water cooling continuous rolling machine, 4-liquid outlet cover, 5-conveying device, 6-ball mill, 7-ultrasonic mixing device, 8-limit block and 9-locking bolt.
Detailed Description
The invention will be further described with reference to the drawings and examples.
As shown in figure 1, the production line of the inorganic adhesive of the electronic paste comprises a feeding, stirring and heating device 1 for the raw materials of the inorganic adhesive, a water-cooling continuous sheet rolling machine 3, a ball mill 6 and an ultrasonic mixing device 7;
the feeding, stirring and heating device 1 comprises a base 11, a cross beam 13 is arranged above the base 11, a telescopic device 16 is arranged between at least one of two ends of the cross beam 13 and the base 11, a stirring shaft 15 is arranged in the middle of the cross beam 13, and stirring blades 151 are arranged on the stirring shaft 15; a driving motor 14 for driving the stirring shaft 15 to rotate is arranged above the cross beam 13;
the base 11 is provided with a turntable 12 which rotates around the vertical central line of a telescopic device 16 arranged at one end of a cross beam 13, the turntable 12 is provided with three heating crucibles 17, and the heating crucibles 17 are uniformly distributed on the turntable 12 along the circumference; the rotation of the turntable 12 can enable the stirring shaft 15 to be positioned right above the heating crucible 17;
the turntable 12 is provided with a groove matched with the heating crucible 17, and the heating crucible 17 is arranged in the groove; the bottom of the groove 17 is provided with a heat conducting layer 19 penetrating to the bottom surface of the turntable 12; the base 11 is provided with a heating device 18;
a feeding device 2 is arranged above any one of the heating crucibles 17 on the turntable 12, the feeding device 2 comprises a frame 21 and a screw conveyer pipe 22, a discharging end of the screw conveyer pipe 22 is positioned right above the heating crucible 17, a material collecting box 23 is arranged at a feeding end of the screw conveyer pipe 22, and a plurality of material feeding pipes 24 are arranged on the material collecting box 23;
the geometric center of the feeding end of the screw conveyor pipe 22, the geometric center of the heating device 18 and the axis of the stirring shaft 15 are uniformly distributed on the projection points on the turntable 12 along the turntable 12 clockwise or anticlockwise in sequence;
a first discharging pipe 171 is arranged at the bottom of the heating crucible 17, and a valve 172 is arranged on the first discharging pipe 171;
a liquid outlet cover 4 is arranged above an inlet of a cooling device 31 of the water-cooling continuous sheet rolling machine 3, and a vacuum pump 41 is arranged above the liquid outlet cover 4; a liquid inlet pipe 42 is arranged on the liquid outlet cover 4, one end of the liquid inlet pipe 42 is communicated with the liquid outlet cover 4, and the other end of the liquid inlet pipe is provided with a liquid collecting box 43 with an opening on the upper surface;
when the turntable 12 rotates to the position that one heating crucible 17 on the turntable 12 is positioned under the stirring shaft 15, one end of a first discharging pipe 171 of the heating crucible 17 positioned above the heating device 18 on the turntable is communicated with the heating crucible 17, and the other end of the first discharging pipe is positioned right above an opening on the upper surface of the liquid collection box 43;
a conveying device 5 is arranged below a first discharge hole 32 of the water-cooling continuous sheet rolling machine 3; a receiving hopper 61 is arranged at a feed inlet of the ball mill 6, and a discharge outlet 62 of the ball mill 6 is positioned right above an inlet of the ultrasonic mixing device 7; the conveyor 5 conveys the material from the first outlet 32 to the receiving hopper 61.
During operation:
firstly, the raw material of the inorganic adhesive is fed into one of the heating crucibles 17 on the turntable 12 via the charging device 2, and the individual components of the raw material of the inorganic adhesive can be fed into the charging device 2 via the corresponding material feed lines 24.
The turntable 12 is then rotated, and the rotation is stopped when the turntable 12 is rotated until the heated crucible 17 for the raw material to which the inorganic binder is added is located directly below the stirring shaft 5.
The heating crucible 17 below the stirring shaft 15 is lowered by controlling the telescopic device 16 so that the cross beam 13 is lowered, the stirring shaft 15 is inserted into the heating crucible 17 to stir the materials, and after stirring is completed, the cross beam 13 is raised by controlling the telescopic device 16 so that the stirring shaft 15 is separated from the heating crucible 17. The turntable 12 is then rotated continuously so that the heated crucible 17 after stirring of the material is rotated and heated above the heating device 18, and when heated to the corresponding temperature, the material forms a liquid state. Then a first discharging pipe 171 is arranged at the bottom of the heating crucible 17, and a valve 172 is arranged on the first discharging pipe 171; the liquid raw material flows into the liquid collecting box 43, one end of the liquid inlet pipe 42 is communicated with the liquid outlet cover 4, the other end of the liquid inlet pipe is communicated with the liquid collecting box 43, and the vacuum pump 41 is arranged above the liquid outlet cover 4; the liquid outlet cover 4 covers the inlet of a cooling device 31 of the water-cooling continuous flaker 3; the vacuum pump 41 is used for vacuumizing to form a certain negative pressure on the liquid outlet cover 4, so that the liquid raw material flows into the cooling device 31 of the water-cooling continuous flaker 3 from the liquid collecting box 43, and the high-temperature liquid raw material is sliced by the water-cooling continuous flaker 3 after being cooled to form crushed slices. Then, a conveying device 5 is arranged below the first discharging hole 32 of the water-cooling continuous sheet rolling machine 3; the conveyor 5 conveys the material from the first outlet 32 to the receiving hopper 61. The crushed thin raw material is thus fed to the ball mill 6 by the conveyor 5, and the crushed thin raw material is crushed into powder by the ball mill 6, whereby the inorganic binder is produced.
In the working process, during the process of rotating the turntable 2, as the turntable 12 is provided with three heating crucibles 17, the heating crucibles 17 are uniformly distributed on the turntable 12 along the circumference; the geometric center of the discharge end of the screw conveyor pipe 22, the geometric center of the heating device 18 and the axis of the stirring shaft 15 are uniformly distributed on the projection points on the turntable 12 along the turntable 12 clockwise or anticlockwise in sequence; thus, when one heating crucible 17 rotates directly below the stirring shaft 15, the next heating crucible 17 rotates below the discharge end of the screw conveyor pipe 22, and the remaining one heating crucible 17 rotates above the heating device 18 provided on the base 11. Therefore, the feeding, stirring and heating of the raw materials can be ensured to be carried out simultaneously, and the working efficiency is improved.
In summary, in the production line of the electronic paste inorganic adhesive, the feeding, stirring and heating of the raw materials are simultaneously performed by the feeding, stirring and heating device 1, and meanwhile, the outlet of the heating crucible is provided with the first discharging pipe 171, and the valve 172 is arranged on the first discharging pipe 171; the liquid raw material flows into the liquid collecting box 43, one end of the liquid inlet pipe 42 is communicated with the liquid outlet cover 4, the other end of the liquid inlet pipe is communicated with the liquid collecting box 43, and the vacuum pump 41 is arranged above the liquid outlet cover 4; the liquid outlet cover covers the inlet of a cooling device of the water-cooling continuous rolling machine; a conveying device is arranged below a discharge hole of the water-cooling continuous sheet rolling machine; the conveying device conveys materials at the discharge port to the receiving hopper. Therefore, the continuous transportation of materials among the devices can be realized, and the continuous production of the inorganic adhesive of the electronic paste is realized. Therefore, the production line of the electronic paste inorganic adhesive can simplify the process steps from feeding of inorganic adhesive raw materials to forming of liquid raw materials, can reduce the labor intensity of workers, improves the working efficiency and reduces the production cost.
In order to position the turntable 12 when the turntable 12 rotates to the position where the heating crucible 17 is located right below the stirring shaft 15, further, a groove matched with the heating crucible 17 is formed in the turntable 12, a limit boss 121 corresponding to the groove is formed in the circumference of the turntable 12, a limit block 8 for blocking the limit boss 121 when the turntable 12 rotates to the position where the stirring shaft 15 is located right above the heating crucible 17 is arranged on the base 11, and the limit block 8 is hinged with the base 11 through a locking bolt 9.
In the positioning process: the limiting block 8 is locked on the base 11 through the locking bolt 9; and then the turntable 12 is rotated, and the turntable 12 rotates to the limit block 8 to block the limit boss 121 to stop rotating. Then stirring the raw materials in the heating crucible 7, loosening the locking bolt 9 after stirring is completed, and rotating the limiting block 8, so that the limiting boss 121 is not blocked by the limiting block 8 when the turntable 12 rotates, and repeating the above operation when the turntable 12 rotates to the position where the next heating crucible 7 is positioned under the stirring shaft 15.
In order to facilitate the automatic control, further, a contact sensor is disposed on the limiting block 8, and the contact sensor controls the heating device 18 to heat.
The main function of the ball mill 6 is to realize the crushing and fine grinding of the crushed thin slices, the ball mill 6 can adopt a plurality of ball mills, and one preferable mode is that the ball mill 6 comprises a ball mill barrel 61 and a collecting bin 67; one end of the collecting bin 67 is communicated with the ball mill 61 through a discharging grate plate 68; the other end of the collecting bin 67 is communicated with a fan through an air pipe 63, and a material pipe 69 is arranged at the lower part of the collecting bin 67; one end of the ball milling barrel 61 is communicated with the collecting bin 67, and the other end of the ball milling barrel is provided with an end cover, and the end cover is provided with an air guiding pipe 62 and a first feeding pipe 64;
a steel ball fixing frame 65 is arranged in the ball milling barrel 61; the steel ball fixing frame 65 comprises at least two compartment grating plates 652, a space is reserved between every two adjacent compartment grating plates 652, and a supporting frame 651 is arranged on the edge of each compartment grating plate 652; the compartment grating plates 652 are uniformly distributed on the supporting frame 651 along the length direction of the supporting frame 651; the supporting frame 651 is tightly attached to the inner wall of the ball mill 61; an arc steel ball supporting plate 654 is arranged on the compartment grating plate 652; the steel ball supporting plate 654 is tightly attached to the inner wall of the ball mill barrel 61;
one end of the supporting frame 651 is connected with the discharging grate plate 68, and the other end of the supporting frame 651 is connected with the end cover; the compartment grating 652 divides the ball mill 61 into a plurality of chambers;
the partition grate plates 652 are provided with through holes 653, the sizes of the through holes on the same partition grate plate 652 are the same, and the diameters of the through holes on different partition grate plates 652 are sequentially reduced from one end of the ball mill barrel 61 provided with an end cover to the other end;
the steel balls 66 are arranged in a plurality of chambers separated by the compartment grate plates 652 in the inner cavity of the ball mill barrel 61, the diameters of the steel balls in the same chamber are the same, and the diameters of the steel balls 66 in different chambers are sequentially reduced from one end of the ball mill barrel 61 provided with an end cover to the other end.
During the working process of the ball mill:
firstly, materials enter the ball mill barrel 61 through the first feeding pipe 64, and after the materials enter the ball mill barrel 61, as the air guide pipe 62 and the air pipe 63 are arranged on the ball mill barrel 61, a fan communicated with the air pipe 63 is started, so that air flow is generated in the ball mill barrel 61, and the materials flow from one end of the ball mill barrel 61 to the other end under the action of the air flow. At this time, a steel ball fixing frame 65 is arranged in the ball milling barrel 1; the steel ball fixing frame 65 comprises at least two compartment grating plates 652, a space is reserved between every two adjacent compartment grating plates 652, and a supporting frame 651 is arranged on the edge of each compartment grating plate 652; the compartment grating plates 652 are uniformly distributed on the supporting frame 651 along the length direction of the supporting frame 651; the compartment grating 652 divides the ball mill 61 into a plurality of chambers; the partition grate plates 652 are provided with through holes 653, the sizes of the through holes on the same partition grate plate 652 are the same, and the diameters of the through holes on different partition grate plates 652 are sequentially reduced from one end of the ball mill barrel 61 provided with an end cover to the other end; the steel balls 66 are arranged in a plurality of chambers separated by the compartment grate plates 652 in the inner cavity of the ball mill barrel 61, the diameters of the steel balls in the same chamber are the same, and the diameters of the steel balls 66 in different chambers are sequentially reduced from one end of the ball mill barrel 61 provided with an end cover to the other end; therefore, after the material particles are firstly ground and crushed in the first chamber through the steel balls with larger diameters, the material with smaller particles can enter the next chamber, and so on, when the material enters the last chamber, the material is already formed into powder, and the particle size reaches the production requirement. The formed powder is then collected by a collection bin 67, so that the crushed thin slices are crushed and ground, and the glass powder meeting the requirements is obtained.
The ball mill is provided with a steel ball fixing frame in the ball milling barrel; the steel ball fixing frame comprises at least two compartment grate plates which divide the ball milling cylinder into a plurality of chambers; the through holes are formed in the partition grid plates, the sizes of the through holes in the same partition grid plate are the same, and the diameters of the through holes in different partition grid plates are sequentially reduced from one end of the ball mill barrel, on which the end cover is arranged, to the other end of the ball mill barrel; steel balls are arranged in a plurality of chambers separated by the compartment grate plate in the inner cavity of the ball milling cylinder, the diameters of the steel balls in the same chamber are the same, the diameters of the steel balls in different chambers are sequentially reduced from one end of the ball mill barrel, which is provided with the end cover, to the other end of the ball mill barrel. Therefore, after the crushed materials of the glass powder enter the ball milling barrel, under the action of air flow, one end of the ball milling barrel flows to the other end, and in the process, the crushed materials can pass through a plurality of separated chambers, and at the moment, the crushed materials can be crushed in a grading way due to the different sizes of the steel balls in the different chambers, so that the crushing efficiency can be improved, and the crushing quality is ensured.
In order to improve the crushing efficiency and simplify the structure, further, the diameters of the steel balls 66 in the different chambers are sequentially reduced from one end of the ball mill barrel 1 provided with the end cover to the other end according to an equal ratio array. The specific function value of the equal ratio array can be determined by a user according to the particle size of the obtained fine powder which is crushed according to the user's own needs.
In order to enable the steel ball fixing frame 65 to rotate together with the ball milling barrel 61 and ensure structural stability, further, a groove matched with a supporting frame 651 is formed in an end cover at one end of the ball milling barrel 61, and the supporting frame 651 is matched with the groove in the end cover.
In order to avoid the position change of the compartment grating plates 652 caused by the impact of the steel balls 66 on the compartment grating plates 652 in the process of crushing materials, further, the number of the supporting frames 651 is at least two, and the steel balls are uniformly distributed along the circumference on the edges of the compartment grating plates 652.
The main function of the ultrasonic mixing device 7 is to realize uniform mixing of glass powder and improved performance powder, and the ultrasonic mixing device 7 comprises a mixing pipe 71; the mixing pipe 71 is sequentially divided into a feeding section 711, a mixing section 712, a transition section 713 and a discharging section 714 from one end to the other end;
one end of the feeding section 711 is provided with a blower 72; the air outlet of the blower 72 is communicated with one end of the feeding section 711; the feeding section 711 is provided with a second feeding pipe 74, the second feeding pipe 74 is communicated with the inner cavity of the feeding section 711, and the geometric center line of a feeding hole of the second feeding pipe 74 in the feeding section 711 is perpendicular to the geometric center line of the mixing pipe 71;
a partition plate 73 is arranged in the feeding section 711, and the partition plate 73 is positioned between an air outlet of the air blower 72 and a feed inlet of the second feeding pipe 74 in the feeding section 711; the partition plate 73 is provided with uniformly distributed ventilation holes 731;
an ultrasonic emitter 75 is arranged on the mixing section 712, and an emitting head 751 of the ultrasonic emitter 75 extends into the mixing tube 71; the discharging section 714 is provided with a discharging pipe 715;
the second feeding pipe 74 in the feeding section 711 is provided with a blowing cavity 76 right below a feeding hole in the feeding section 711, the blowing cavity 76 is communicated with an air outlet of the blower 72, and the upper surface of the blowing cavity 76 is provided with a blowing hole 761 communicated with the inner cavity of the feeding section 711; the mixing tube 71 is a circular tube, the emitting head 751 is a cross, and the center of the cross is located on the geometric center line of the mixing tube 71.
In operation of the ultrasonic mixing device 7, the blower 72 and the ultrasonic emitter 75 are first activated; then, glass frit and powder improving glass frit property are added into the second feeding pipe 74 according to a prescribed ratio, the powder entering into the feeding section 711 forms fluid by the blowing of the blower 72 to the feeding section 711, flows to the other end of the mixing pipe 71, and when fine powder passes through the mixing section 712, the ultrasonic transmitter 75 has a transmitting head 751 extending into the mixing pipe 71 because the mixing section 712 is provided with the ultrasonic transmitter 75; the ultrasonic emitter 75 emits ultrasonic waves at the mixing section 712 so that the fine powder passing through the mixing section 712 is uniformly mixed, and the mixed fine powder passes through the transition section 713 and the discharging section 714; finally, the material is discharged from the discharge pipe 715 in the discharge section 714.
In order to avoid that the powder is blown by the air blown by the blower 72 at a position in the feeding section 711 directly below the feeding opening in the feeding section 711 by the gravity, further, a blowing cavity 76 is arranged in the feeding section 711 directly below the feeding opening in the feeding section 711 by the second feeding pipe 74, the blowing cavity 76 is communicated with the air outlet of the blower 72, and a blowing hole 761 communicated with the inner cavity of the feeding section 711 is arranged on the upper surface of the blowing cavity 76.
In order to improve the blowing effect of the blower 72, further, the air outlet of the blower 72 is provided with a flare-shaped blower tube 721, and the air outlet of the blower 72 is communicated with one end of the feeding section 711 through the blower tube.
The ultrasonic mixing device 7 is provided with the blower at one end of the mixing tube, the glass powder raw material powder entering the mixing tube is in a flowing state by the blower, so that fluid is formed, then the ultrasonic generator is arranged at the mixing section of the mixing tube, ultrasonic waves are emitted by the ultrasonic generator, and particles in the powder vibrate at different frequencies by the ultrasonic waves, so that uniform mixing of the glass powder raw material powder is realized at the mixing section of the mixing tube. Therefore, the ultrasonic mixing device for preparing the glass powder of the inorganic adhesive of the electronic paste can realize fluidization of the glass powder and ensure uniform mixing of the glass powder and the corresponding improved performance powder.
In order to enable the fine powder to be sufficiently uniformly mixed in the mixing section 712, further, the transition section 713 is in the shape of a waist drum recessed into the mixing tube 71. The transition section 713 is configured in a waist drum shape recessed into the mixing tube 71 so that the flow rate of the fine powder in the mixing section 712 can be reduced, thereby extending the residence time of the fine powder in the mixing section 712 so that the fine powder is sufficiently mixed in the mixing section 712.
In order to make the ultrasonic waves uniformly distributed in the mixing section 712 of the mixing tube 71, further, the mixing tube 71 is a circular tube, and the emitting head 751 is a cross shape, and the center of the cross shape is located on the geometric center line of the mixing tube 71.
In order to facilitate flow regulation, further, a first regulating valve 741 is disposed on the second feeding pipe 74, and a second regulating valve 716 is disposed on the discharging pipe 715. The primary function of the first and second regulator valves 741 and 716 is to control the flow rate of the powder.
In order to facilitate control of the amount of the raw material to be conveyed, it is preferable that the conveying device 5 is a screw conveyor, and in order to facilitate conveyance of the raw material of the crushed thin sheet, it is preferable that the conveying device 5 is a belt conveyor.
In order to form the liquid raw material into crushed flakes for further crushing in a subsequent ball mill, the water-cooled continuous flaker 3 adopts a heat-resistant stainless steel water-cooled continuous flaker.
In order to ensure that the ball mill 6 is capable of obtaining sufficiently fine powder after crushing the crushed flake material, it is preferable that the ball mill 6 employs a steel jade pot ball mill.
Claims (7)
1. The production line of the inorganic adhesive of electronic paste is characterized in that: comprises a feeding, stirring and heating device (1) for inorganic adhesive raw materials, a water-cooling continuous flaker (3), a ball mill (6) and an ultrasonic mixing device (7);
the feeding, stirring and heating device (1) comprises a base (11), a cross beam (13) is arranged above the base (11), a telescopic device (16) is arranged between at least one of two ends of the cross beam (13) and the base (11), a stirring shaft (15) is arranged in the middle of the cross beam (13), and stirring blades (151) are arranged on the stirring shaft (15); a driving motor (14) for driving the stirring shaft (15) to rotate is arranged above the cross beam (13);
a turntable (12) rotating around the vertical central line of a telescopic device (16) arranged at one end of a cross beam (13) is arranged on the base (11), three heating crucibles (17) are arranged on the turntable (12), and the heating crucibles (17) are uniformly distributed on the turntable (12) along the circumference; the rotary table (12) rotates to enable the stirring shaft (15) to be positioned right above the heating crucible (17);
the turntable (12) is provided with a groove matched with the heating crucible (17), and the heating crucible (17) is arranged in the groove; the bottom of the groove is provided with a heat conducting layer (19) penetrating to the bottom surface of the turntable (12); a heating device (18) is arranged on the base (11);
a feeding device (2) is arranged above any one of the heating crucibles (17) on the turntable (12), the feeding device (2) comprises a frame (21) and a screw conveyor pipe (22), a discharge end of the screw conveyor pipe (22) is positioned right above the heating crucible (17), a material collecting box (23) is arranged at a feed end of the screw conveyor pipe (22), and a plurality of material feeding pipes (24) are arranged on the material collecting box (23);
the geometric center of the discharge end of the screw conveyor pipe (22), the geometric center of the heating device (18) and the axis of the stirring shaft (15) are uniformly distributed on the projection points of the turntable (12) along the turntable (12) clockwise or anticlockwise in sequence;
a first discharging pipe (171) is arranged at the bottom of the heating crucible (17), and a valve (172) is arranged on the first discharging pipe (171);
a liquid outlet cover (4) is arranged above an inlet of a cooling device (31) of the water-cooling continuous sheet rolling machine (3), and a vacuum pump (41) is arranged above the liquid outlet cover (4); a liquid inlet pipe (42) is arranged on the liquid outlet cover (4), one end of the liquid inlet pipe (42) is communicated with the liquid outlet cover (4), and the other end of the liquid inlet pipe is provided with a liquid collecting box (43) with an opening on the upper surface;
when the turntable (12) rotates to the position, on the turntable (12), of a heating crucible (17) under the stirring shaft (15), one end of a first discharging pipe (171) of the heating crucible (17) positioned above the heating device (18) on the turntable is communicated with the heating crucible (17), and the other end of the first discharging pipe is positioned right above an opening on the upper surface of the liquid collecting box (43);
a conveying device (5) is arranged below a first discharge hole (32) of the water-cooling continuous sheet rolling machine (3); a material receiving funnel is arranged at a material inlet of the ball mill (6), and a second material outlet of the ball mill (6) is positioned right above an inlet of the ultrasonic mixing device (7); the conveying device (5) conveys the material of the first discharge hole (32) to the receiving hopper.
2. The electronic paste inorganic adhesive production line according to claim 1, wherein: be provided with the recess that matches with heating crucible (17) on carousel (12), be provided with spacing boss (121) that correspond with the recess on the circumference of carousel (12), be provided with stopper (8) that carousel (12) rotated spacing boss (121) when (15) are located heating crucible (17) directly over to stirring axle (11), stopper (8) are articulated with base (11) through lock bolt (9).
3. The electronic paste inorganic adhesive production line according to claim 1, wherein: the ball mill (6) comprises a ball mill cylinder (61) and a collecting bin (67); one end of the collecting bin (67) is communicated with the ball milling barrel (61) through a discharging grate plate (68); the other end of the collecting bin (67) is communicated with the fan through an air pipe (63), and a material pipe (69) is arranged at the lower part of the collecting bin (67); one end of the ball milling barrel (61) is communicated with the collecting bin (67), the other end of the ball milling barrel is provided with an end cover, and the end cover is provided with an air guiding pipe (62) and a first feeding pipe (64);
a steel ball fixing frame (65) is arranged in the ball milling barrel (61); the steel ball fixing frame (65) comprises at least two compartment grate plates (652), a space is reserved between every two adjacent compartment grate plates (652), and a supporting frame (651) is arranged on the edge of each compartment grate plate (652); the bin-separating grid plates (652) are uniformly distributed on the supporting frame (651) along the length direction of the supporting frame (651); the supporting frame (651) is tightly attached to the inner wall of the ball milling barrel (61); an arc steel ball supporting plate (654) is arranged on the compartment grate plate (652); the steel ball supporting plate (654) is tightly attached to the inner wall of the ball milling barrel (61);
one end of the supporting frame (651) is connected with the discharging grate plate (68), and the other end of the supporting frame (651) is connected with the end cover; the compartment grating plates (652) divide the ball grinding cylinder (61) into a plurality of chambers;
the through holes (653) are formed in the partition grate plates (652), the sizes of the through holes in the same partition grate plate (652) are the same, and the diameters of the through holes in different partition grate plates (652) are sequentially reduced from one end of the ball mill barrel (61) provided with the end cover to the other end;
steel balls (66) are arranged in a plurality of cavities of the inner cavity of the ball mill barrel (61) separated by the compartment grate plates (652), the diameters of the steel balls in the same cavity are the same, and the diameters of the steel balls (66) in different cavities are sequentially reduced from one end of the ball mill barrel (61) provided with an end cover to the other end.
4. A production line for an electronic paste inorganic adhesive according to claim 3, wherein: the ultrasonic mixing device (7) comprises a mixing tube (71); the mixing pipe (71) is sequentially divided into a feeding section (711), a mixing section (712), a transition section (713) and a discharging section (714) from one end to the other end;
one end of the feeding section (711) is provided with a blower (72); an air outlet of the air blower (72) is communicated with one end of the feeding section (711); the feeding section (711) is provided with a second feeding pipe (74), the second feeding pipe (74) is communicated with the inner cavity of the feeding section (711), and the geometric center line of a feeding hole of the second feeding pipe (74) in the feeding section (711) is perpendicular to the geometric center line of the mixing pipe (71);
a partition plate (73) is arranged in the feeding section (711), and the partition plate (73) is positioned between an air outlet of the air blower (72) and a feeding hole of the second feeding pipe (74) in the feeding section (711); the partition plate (73) is provided with ventilation holes (731) which are uniformly distributed;
-an ultrasonic emitter (75) is arranged on the mixing section (712), the ultrasonic emitter (75) having an emitter head (751) extending into the mixing tube (71); the discharging section (714) is provided with a second discharging pipe (715);
a second feeding pipe (74) in the feeding section (711) is provided with a blowing cavity (76) right below a feeding hole in the feeding section (711), the blowing cavity (76) is communicated with an air outlet of a blower (72), and the upper surface of the blowing cavity (76) is provided with a blowing hole (761) communicated with the inner cavity of the feeding section (711); the mixing tube (71) is a circular tube, the emitting head (751) is in a cross shape, and the center of the cross shape is positioned on the geometric center line of the mixing tube (71).
5. The electronic paste inorganic adhesive production line according to claim 2, wherein: the limiting block (8) is provided with a contact sensor, and the contact sensor controls the heating device (18) to heat.
6. The electronic paste inorganic adhesive production line according to claim 1, wherein: the conveying device (5) adopts a screw conveyor or a belt conveyor.
7. The electronic paste inorganic adhesive production line according to claim 1, wherein: the water-cooling continuous sheet rolling machine (3) adopts a heat-resistant stainless steel water cooling continuous sheet rolling machine.
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| CN201710958960.2A CN107570277B (en) | 2017-10-16 | 2017-10-16 | Production line of inorganic adhesive of electronic paste |
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| CN201710958960.2A CN107570277B (en) | 2017-10-16 | 2017-10-16 | Production line of inorganic adhesive of electronic paste |
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| CN108946118A (en) * | 2018-06-20 | 2018-12-07 | 珠海市高栏联合新材料有限公司 | A kind of uninterrupted conveying device of plasticizer |
| CN110369053A (en) * | 2019-08-16 | 2019-10-25 | 东华大学 | A kind of laboratory multifunctional stirring formula ball mill |
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