A ball milling system for preparing low-temperature conductive silver paste

Abstract

The invention relates to the technical field of ball mills, and discloses a ball milling system for preparing low-temperature conductive silver paste, comprising a base, a driving motor is arranged in the base, a driving gear is arranged on the top of the base, a main transmission shaft is fixedly connected to the driving gear, the lower end of the main transmission shaft can rotatably penetrate the top wall of the base and is fixedly sleeved with a crown gear, a driving gear is fixedly installed on the output end of the driving motor, the driving gear and the crown gear are meshingly connected, a gear ring is also arranged on the top of the base, the gear ring is concentric with the driving gear and is arranged around the gear ring in the circumference, a planetary mechanism is meshingly connected between the driving gear and the gear ring, when the present invention is working, a ball milling jar rotates relative to the annular crown gear, a flip gear on one side of the ball milling jar rotates by meshing with the annular crown gear, and the ball milling jar is driven to rotate and flip continuously through the flip shaft, thereby preventing the material in the inner tank from accumulating at the bottom of the inner tank and improving the mixing effect of the material.

Description

Technical Field

[0001] The invention belongs to the technical field of ball mills, in particular to a ball mill system for preparing low-temperature conductive silver paste. Background Art

[0002] Silver paste is a slurry containing silver powder and other ingredients. It is mainly used in electronic and electrical fields. It is usually prepared using a ball mill. A planetary ball mill is an essential device for mixing, fine grinding, small sample preparation, nanomaterial dispersion, new product development and small-batch production of high-tech materials. When the planetary ball mill is working, multiple ball mills and rotating disks form a planetary motion. The self-rotation of the ball mill drives the grinding balls in the ball mill to collide with each other at high speed. The grinding balls in the mill collide with each other during high-speed motion to grind and mix the samples.

[0003] Publication No. CN112371266B discloses a planetary vibration ball mill, which belongs to the field of ball mills. It includes a base with an open upper end, a main motor is arranged in the base, the output shaft of the main motor is connected to the rotating shaft at the lower end of the rotating disk, the driving gear on the rotating shaft is meshed with the planetary gear on the planetary shaft, the upper end of the planetary shaft passes through the rotating disk and is connected to the grinding jar seat, a ball grinding jar is placed in the grinding jar seat, a support is arranged at the lower end of the main motor, an auxiliary motor is arranged in the base below the support, the output shaft of the auxiliary motor is connected to the drive shaft, the drive shaft is not arranged horizontally, and the drive shaft is used to drive one side of the support to rise and fall.

[0004] However, when the above-mentioned planetary vibration ball mill is working, the viscosity of the material is relatively high, resulting in poor fluidity. Larger particles are not easy to suspend and are easily deposited at the bottom, resulting in failure to fully stir and grind the material. For this reason, the present application proposes a ball milling system for preparing low-temperature conductive silver paste. Summary of the invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides the following technical solutions: a ball milling system for preparing low-temperature conductive silver paste, comprising a base, a driving motor is arranged in the base, a driving gear is arranged on the top of the base, a main transmission shaft is fixedly connected to the driving gear, the lower end of the main transmission shaft can rotatably penetrate the top wall of the base and is fixedly sleeved with a crown gear, a driving gear is fixedly installed on the output end of the driving motor, the driving gear and the crown gear are meshingly connected, a gear ring is also arranged on the top of the base, the gear ring is concentric with the driving gear and is arranged around the gear ring, a planetary mechanism is meshingly connected between the driving gear and the gear ring, a ball milling jar is arranged on the planetary mechanism, and the driving gear can drive the ball milling jar to rotate through the gear ring and the planetary mechanism;

[0006] The planetary mechanism includes a planetary gear, a connecting shaft, a tray and a side plate. The planetary gear is meshed and connected with the driving gear and the gear ring respectively. The tray is fixedly connected to the planetary gear via the connecting shaft. Two side plates are symmetrically arranged on the tray. A ball mill is arranged between the two side plates. A flip mechanism is arranged on one side of the ball mill, and the flip mechanism can drive the ball mill to flip.

[0007] The flipping mechanism includes a flipping shaft, a flipping gear and an annular crown gear. There are two flipping shafts, which are symmetrically and rotatably arranged on two side plates. The side walls of the ball mill are fixedly connected to the two flipping shafts, one of which is fixedly installed with a flipping gear. A first cross bar is rotatably sleeved on the main transmission shaft, a circular hole is opened on the first cross bar, an annular crown gear is installed at the bottom of the circular hole, the annular crown gear is meshed and connected with the flipping gear, a second cross bar is rotatably sleeved on the connecting shaft, and the second cross bar is connected to the first cross bar through a vertical rod.

[0008] Furthermore, a threaded portion is provided at the top of the main transmission shaft, a smooth portion is provided below the threaded portion, a limit ring is provided below the smooth portion and is ringed on the main transmission shaft, the first cross bar is rotatably sleeved on the circumference of the smooth portion, a limit nut is threadedly connected to the threaded portion, the limit nut is used to lock the height of the first cross bar, and the first cross bar is rotatably connected to the vertical bar via a rotating shaft.

[0009] Furthermore, the second cross bar and the vertical bar are detachably connected via a bolt, and the planetary mechanism also includes a lifting support plate, a threaded column is fixedly connected to the bottom of the lifting support plate, a threaded hole is opened on the tray, and the lower end of the threaded column can be threadedly connected to the threaded hole, and the lifting support plate can be spirally ascended through the threaded column and connected to the bottom of the ball mill.

[0010] Furthermore, a buffer pad is arranged on the top of the lifting support plate, and anti-slip grooves are arranged on the surface of the buffer pad.

[0011] Furthermore, a dust cover is installed above the base, and the dust cover includes a dustproof outer ring and a dustproof middle ring. An annular channel is provided between the dustproof outer ring and the dustproof middle ring, and the connecting shaft can move along the annular channel.

[0012] Furthermore, the ball mill jar is provided with a detachable inner liner, and the inner liner is provided with grinding balls.

[0013] Furthermore, the grinding balls are made of zirconium oxide.

[0014] Furthermore, there are multiple planetary mechanisms.

[0015] Furthermore, shock-absorbing and anti-slip feet are provided at the four corners of the bottom of the base.

[0016] Technical effects:

[0017] 1. When the present invention is working, the planetary gear can be driven to rotate around its own center and the main transmission shaft at the same time through the rotation of the driving gear and the gear ring, thereby driving the ball mill to move. The grinding balls in the inner tank move under the action of multiple forces generated by the rotation to grind and crush the raw materials.

[0018] 2. When the present invention is working, the ball mill rotates relative to the annular crown gear, and the flip gear on one side thereof rotates by meshing with the annular crown gear, and the ball mill is driven to rotate and flip continuously through the flip shaft, thereby preventing the material in the inner tank from accumulating at the bottom of the inner tank and improving the mixing effect of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of the overall front view structure of a planetary vibration ball mill of the present invention;

[0021] Figure 2 A planetary vibration ball mill of the present invention Figure 1 Schematic diagram of the local structure of part A;

[0022] Figure 3 A planetary vibration ball mill of the present invention Figure 1 Schematic diagram of the local structure of part B;

[0023] Figure 4 It is a three-dimensional structural schematic diagram of a planetary mechanism part in a planetary vibration ball mill of the present invention;

[0024] Figure 5 It is a schematic diagram of a cross-sectional structure of a planetary vibration ball mill in a top view of the present invention;

[0025] Figure 6 It is a side view structural schematic diagram of a vertical rod part in a planetary vibration ball mill of the present invention;

[0026] Figure 7 It is a schematic diagram of the cross-sectional structure of a ball milling tank in a planetary vibration ball mill of the present invention;

[0027] In the figure: 1. base; 2. driving motor; 3. driving gear; 4. main transmission shaft; 5. crown gear; 6. driving gear; 7. gear ring; 8. planetary gear; 9. ball mill; 10. tray; 11. side plate; 12. flip shaft; 13. flip gear; 14. first cross bar; 15. annular crown gear; 16. connecting shaft; 17. second cross bar; 18. vertical bar; 19. limiting ring; 20. limiting nut; 21. lifting support plate; 22. plug; 23. threaded column; 24. dust cover. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] Embodiment 1, as Figure 1-6 As shown, it includes a base 1, a driving motor 2 is arranged inside the base 1, a driving gear 3 is arranged on the top of the base 1, a main transmission shaft 4 is fixedly connected to the driving gear 3, the lower end of the main transmission shaft 4 can rotatably penetrate the top wall of the base 1 and is fixedly sleeved with a crown gear 5, a driving gear 6 is fixedly installed on the output end of the driving motor 2, the driving gear 6 and the crown gear 5 are meshed and connected, a gear ring 7 is also arranged on the top of the base 1, the gear ring 7 is concentric with the driving gear 3 and is arranged around the circumference of the gear ring 7, a planetary mechanism is meshed and connected between the driving gear 3 and the gear ring 7, a ball mill 9 is arranged on the planetary mechanism, and the driving gear 3 can drive the ball mill 9 to rotate through the gear ring 7 and the planetary mechanism;

[0030] The planetary mechanism includes a planetary gear 8, a connecting shaft 16, a tray 10 and a side plate 11. The planetary gear 8 is meshed and connected with the driving gear 3 and the gear ring 7 respectively. The tray 10 is fixedly connected to the planetary gear 8 through the connecting shaft 16. Two side plates 11 are symmetrically arranged on the tray 10. A ball mill 9 is arranged between the two side plates 11. A flip mechanism is arranged on one side of the ball mill 9, and the flip mechanism can drive the ball mill 9 to flip.

[0031] The flip mechanism includes a flip shaft 12, a flip gear 13 and an annular crown gear 15. There are two flip shafts 12. The two flip shafts 12 are symmetrically and rotatably penetrated on the two side plates 11. The side walls of the ball mill 9 are fixedly connected to the two flip shafts 12 respectively. The flip gear 13 is fixedly installed on one of the flip shafts 12. A first cross bar 14 is rotatably sleeved on the main transmission shaft 4. A circular hole is opened on the first cross bar 14. An annular crown gear 15 is installed at the bottom of the circular hole. The annular crown gear 15 is meshed and connected with the flip gear 13. A second cross bar 17 is rotatably sleeved on the connecting shaft 16. The second cross bar 17 is connected to the first cross bar 14 through a vertical rod 18.

[0032] During operation, the driving motor 2 is started to drive the active gear to rotate, and then the main transmission shaft 4 is driven to rotate through the meshing crown gear 5, and the action is transmitted to the active gear 3 through the main transmission shaft 4. The rotation of the active gear 3 cooperates with the gear ring 7, and then drives the planetary gear 8 to rotate around its own center of circle and the main transmission shaft 4 at the same time, thereby driving the ball mill 9 to move. The grinding balls in the inner tank 25 move under the action of multiple forces generated by the rotation to grind and crush the raw materials. When the ball mill 9 rotates relative to the annular crown gear 15, the flip gear 13 on one side thereof rotates by meshing with the annular crown gear 15, and drives the ball mill 9 to rotate and flip continuously through the flip shaft 12, thereby preventing the material in the inner tank 25 from accumulating at the bottom of the inner tank 25, thereby improving the mixing effect of the material.

[0033] A threaded portion is provided on the top of the main transmission shaft 4, a smooth portion is provided below the threaded portion, a limit ring 19 is provided below the smooth portion and is ringed on the main transmission shaft 4, the first cross bar 14 is rotatably sleeved on the circumference of the smooth portion, and a limit nut 20 is threadedly connected to the threaded portion, and the limit nut 20 is used to lock the height of the first cross bar 14, and the first cross bar 14 is rotatably connected to the vertical rod 18 through a rotating shaft. After the inner liner 25 filled with raw materials is loaded into the ball mill 9, the first cross bar 14 is flipped downward, the annular crown gear 15 is meshed and connected with the flip gear 13, one end of the first cross bar 14 is sleeved on the main transmission shaft 4, and the limit nut 20 is installed; after the grinding of the raw materials is completed, the limit nut 20 is removed, and the first cross bar 14 is flipped upward away from the ball mill 9, so as to facilitate the removal of the inner liner 25 from the ball mill 9 and remove the silver paste.

[0034] In the second embodiment, the second cross bar 17 and the vertical bar 18 are detachably connected by a plug 22, and the planetary mechanism also includes a lifting support plate 21, and a threaded column 23 is fixedly connected to the bottom of the lifting support plate 21. A threaded hole is opened on the tray 10, and the lower end of the threaded column 23 can be threadedly connected to the threaded hole. The lifting support plate 21 can be spirally raised through the threaded column 23 and connected to the bottom of the ball mill 9; pull out the plug 22, remove the limit nut 20, separate and remove the vertical bar 18 from the second cross bar 17, and rotate and adjust the lifting support plate 21 so that the lifting support plate 21 is spirally raised through the threaded column 23 and connected to the bottom of the ball mill 9, which can prevent the bottom of the ball mill 9 from flipping over.

[0035] A buffer pad is provided on the top of the lifting support plate 21 , and an anti-slip pattern is provided on the surface of the buffer pad. The buffer pad can improve the locking effect of the lifting support plate 21 on the bottom of the ball mill 9 .

[0036] A dust cover 24 is installed above the base 1. The dust cover 24 includes a dustproof outer ring and a dustproof middle ring. An annular channel is provided between the dustproof outer ring and the dustproof middle ring, and the connecting shaft 16 can move along the annular channel. The dust cover 24 can ensure smooth engagement between the driving gear 3 and the planetary gear 8, and can also prevent the planetary mechanism from tilting.

[0037] The ball mill 9 is provided with a detachable inner liner 25, in which grinding balls are arranged. The grinding balls are made of zirconium oxide. The detachable inner liner 25 is convenient for weighing and moving materials in and out. The grinding balls made of zirconium oxide have the characteristics of high hardness and wear resistance.

[0038] There are multiple planetary mechanisms, and setting up multiple planetary mechanisms can improve work efficiency.

[0039] The four corners of the bottom of the base 1 are provided with shock-absorbing and anti-skid feet, which can reduce the vibration generated during work and prevent parts from loosening.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ball milling system for preparing low-temperature conductive silver paste, comprising a base (1), characterized in that: A driving motor (2) is arranged in the base (1), a driving gear (3) is arranged on the top of the base (1), a main transmission shaft (4) is fixedly connected to the driving gear (3), the lower end of the main transmission shaft (4) rotatably passes through the top wall of the base (1) and is fixedly sleeved with a crown gear (5), a driving gear (6) is fixedly installed on the output end of the driving motor (2), the driving gear (6) and the crown gear (5) are meshingly connected, a gear ring (7) is also arranged on the top of the base (1), the gear ring (7) is concentric with the driving gear (3) and is arranged around the circumference of the gear ring (7), a planetary mechanism is meshingly connected between the driving gear (3) and the gear ring (7), a ball mill (9) is arranged on the planetary mechanism, and the driving gear (3) can drive the ball mill (9) to rotate through the gear ring (7) and the planetary mechanism; The planetary mechanism comprises a planetary gear (8), a connecting shaft (16), a tray (10) and a side plate (11); the planetary gear (8) is meshedly connected with the driving gear (3) and the gear ring (7) respectively; the tray (10) is fixedly connected above the planetary gear (8) via the connecting shaft (16); two side plates (11) are symmetrically arranged on the tray (10); a ball mill (9) is arranged between the two side plates (11); a turning mechanism is arranged on one side of the ball mill (9); the turning mechanism can drive the ball mill (9) to turn over; The turning mechanism comprises a turning shaft (12), a turning gear (13) and an annular crown gear (15). There are two turning shafts (12), and the two turning shafts (12) are symmetrically and rotatably arranged on the two side plates (11). The side walls of the ball mill (9) are respectively fixedly connected to the two turning shafts (12). A turning gear (13) is fixedly installed on one of the turning shafts (12). A first cross bar (14) is rotatably sleeved on the main transmission shaft (4). A circular hole is formed on the first cross bar (14). An annular crown gear (15) is installed at the bottom of the circular hole. The annular crown gear (15) is meshedly connected with the turning gear (13). A second cross bar (17) is rotatably sleeved on the connecting shaft (16). The second cross bar (17) is connected to the first cross bar (14) through a vertical rod (18). The main transmission shaft (4) is provided with a threaded portion at the top, a smooth portion is provided below the threaded portion, a limiting ring (19) is provided below the smooth portion and is arranged around the main transmission shaft (4), the first cross bar (14) is rotatably sleeved on the circumference of the smooth portion, a limiting nut (20) is threadedly connected to the threaded portion, the limiting nut (20) is used to lock the height of the first cross bar (14), and the first cross bar (14) is rotatably connected to the vertical bar (18) via a rotating shaft; The second cross bar (17) and the vertical bar (18) are detachably connected via a bolt (22); the planetary mechanism further comprises a lifting support plate (21); a threaded column (23) is fixedly connected to the bottom of the lifting support plate (21); a threaded hole is provided on the tray (10); the lower end of the threaded column (23) can be threadedly connected to the threaded hole; the lifting support plate (21) can be spirally raised via the threaded column (23) and connected to the bottom of the ball mill (9).

2. A ball milling system for preparing low-temperature conductive silver paste according to claim 1, characterized in that: A buffer pad is arranged on the top of the lifting support plate (21), and anti-slip grooves are arranged on the surface of the buffer pad.

3. A ball milling system for preparing low-temperature conductive silver paste according to claim 2, characterized in that: A dust cover (24) is installed above the base (1), the dust cover (24) comprising a dustproof outer ring and a dustproof middle ring, an annular channel is provided between the dustproof outer ring and the dustproof middle ring, and the connecting shaft (16) can move along the annular channel.

4. A ball milling system for preparing low-temperature conductive silver paste according to claim 3, characterized in that: The ball mill jar (9) is provided with a detachable inner container (25), and grinding balls are arranged in the inner container (25).

5. A ball milling system for preparing low-temperature conductive silver paste according to claim 4, characterized in that: The grinding balls are made of zirconium oxide.

6. The ball milling system for preparing low-temperature conductive silver paste according to claim 5, characterized in that: There are multiple planetary mechanisms.

7. The ball milling system for preparing low-temperature conductive silver paste according to claim 1, characterized in that: Shock-absorbing and anti-skid feet are arranged at the four corners of the bottom of the base (1).

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