Powder conveying and tabletting equipment for lithium iron phosphate test

Abstract

The invention discloses powder conveying and tabletting equipment for lithium iron phosphate testing, which belongs to the technical field of lithium ion battery electrode material testing related equipment and comprises a feeding unit, a collecting unit, a batch transferring unit, a distributing unit and a tabletting unit. The feeding unit is used for temporarily storing lithium iron phosphate powder and discharging the lithium iron phosphate powder. The collecting unit comprises a collecting ring, a plurality of mounting bases are arranged on the upper end face of the collecting ring in a circumferential array mode, bottom molds used for loading powder are assembled at the upper ends of the mounting bases, and top sleeve pieces are assembled at the upper ends of the bottom molds. The batch transfer unit is used for transferring the collecting rings. And the distribution unit is used for distributing the collecting rings to different positions one by one for tabletting. The sheet pressing unit comprises a plurality of ring moving mechanisms used for receiving the collecting rings and a plurality of hydraulic machines. The lithium iron phosphate powder can be automatically and orderly loaded, the phosphoric acid powder is transferred in batches and distributed to all tabletting positions, tabletting is conducted in batches, the bottom mold and the top sleeve piece can be conveniently replaced according to tabletting requirements, and universality is high.

Description

Technical Field

[0001] The invention belongs to the technical field of equipment related to testing of lithium-ion battery electrode materials, and in particular relates to a powder conveying and tableting device for testing lithium iron phosphate. Background Art

[0002] After the lithium iron phosphate powder is prepared, it needs to go through a series of tests to detect the quality of the finished product, including crystal structure analysis, elemental composition analysis, specific surface area test and other test items that require the powder to be pressed into test pieces.

[0003] When mass-producing lithium iron phosphate powder, sometimes a large number of samples need to be used to press a large number of test pieces for testing, and when using a press to press the pieces, it usually takes 3 to 5 minutes, and it cannot be too fast, and the powder is placed in the mold of the press relatively quickly, so the pressing process has become the main bottleneck for improving the efficiency of test piece preparation. On the other hand, even when producing lithium iron phosphate powder products of a single specification, in some cases it is necessary to change the diameter of the pressed test piece, including adjustments according to the needs of different instruments, such as 10mm small diameter test pieces are often used for X-ray diffraction, and 12mm or 15mm test pieces that match the size of the battery shell are used for electrochemical testing; it also includes testing the radial distribution of parameters such as material density and porosity through different diameter presses, such as 10mm, 15mm, and 20mm, verifying the uniformity of the pressing process, or studying the edge effect of larger diameter test pieces, etc., so a device that can easily and frequently change the mold to change the size of the test piece is also needed. Summary of the invention

[0004] In view of the above-mentioned defects, the present invention provides a powder conveying and tableting equipment for lithium iron phosphate testing, which can automatically and orderly load lithium iron phosphate powder, transfer phosphoric acid powder in batches and distribute it to various tableting positions, and tablet press in batches. The bottom mold and top kit can be easily replaced according to tableting requirements, and the versatility is strong.

[0005] In order to achieve the purpose of the present invention, the following technologies are proposed: A powder conveying and tableting device for lithium iron phosphate testing, comprising: A feeding unit, used for temporarily storing lithium iron phosphate powder and unloading it; The collecting unit is arranged at one side of the feeding unit, and comprises a third linear mechanism arranged vertically, a first rotating motor is arranged vertically at the upper end of the output shaft thereof, a collecting ring is mounted at the upper end of the output shaft of the first rotating motor, a plurality of mounting seats are arranged in a circumferential array on the upper end surface thereof, a bottom mold for loading powder is mounted at the upper end of the mounting seat, a bottom mold groove is opened at the upper end thereof, the inner diameter of the bottom mold groove is the same as the outer diameter of the test piece, a top set is mounted at the upper end of the bottom mold, and the top set comprises an outer ring, a plurality of connecting plates are arranged at the inner circumference side of the outer ring, a top pressing block is arranged at the inner end of the connecting plate, the outer diameter of the top pressing block is the same as the outer diameter of the test piece, a receiving portion is arranged at the upper end of the top pressing block, and a loading and unloading assembly for taking out and assembling the top set on the bottom mold is arranged at one side of the third linear mechanism; A batch transfer unit, provided at one side of the collection unit, for transferring the collection ring; A distribution unit, arranged on one side of the batch transfer unit, is used to distribute the collection rings one by one to different positions for tableting and loading; The pressing unit is arranged at one end of the distributing unit, and includes a plurality of ring moving mechanisms for receiving the collecting rings and a plurality of hydraulic presses. A pressing plate is arranged at the lower end of the pressing rod of the hydraulic press, and a plurality of pressing rollers matching the receiving part are arranged at the lower end of the pressing plate, and a pressing platform is arranged under the pressing plate.

[0006] The beneficial effects of this technical solution are: 1. Lithium iron phosphate powder is loaded onto the bottom molds on the collecting ring of the collecting unit through the feeding unit. After the loading is completed in each bottom mold on a collecting ring, the collecting ring can be allocated to the idle hydraulic press of the tablet pressing unit to press the test piece, which can improve the preparation efficiency of the test piece.

[0007] 2. Before loading the lithium iron phosphate powder, test pieces of different diameters can be pressed out by placing different bottom molds and top sets on the mounting base, and the top pressing block of the top set can be detached under the pressure of the hydraulic press and used as an upper pressing plate, without the need to adjust the parts of the tablet pressing unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 An overall stereogram of an embodiment of the present application is shown.

[0009] Figure 2 A three-dimensional diagram of a feeding unit according to an embodiment of the present application is shown.

[0010] Figure 3 The feeding unit of the embodiment of the present application is shown in a partial three-dimensional manner. Figure 1 .

[0011] Figure 4 The feeding unit of the embodiment of the present application is shown in a partial three-dimensional manner. Figure 2 .

[0012] Figure 5A stereoscopic diagram of the entire collection unit, the entire batch transfer unit, and a portion of the distribution unit according to an embodiment of the present application is shown.

[0013] Figure 6 A stereoscopic view of a collecting unit according to an embodiment of the present application is shown.

[0014] Figure 7 The present application embodiment is shown Figure 6 A magnified view of part A.

[0015] Figure 8 The partial stereoscopic view of the collecting unit of the embodiment of the present application is shown. Figure 1 .

[0016] Fig. 9 The partial stereoscopic view of the collecting unit of the embodiment of the present application is shown. Figure 2 .

[0017] Fig.10 The partial stereoscopic view of the collecting unit of the embodiment of the present application is shown. Figure 3 .

[0018] Fig.11 A partial exploded view of a collecting unit according to an embodiment of the present application is shown.

[0019] Fig.12 The partial stereogram of the batch transfer unit of the present application embodiment is shown. Figure 1 .

[0020] Fig.13 The partial stereogram of the batch transfer unit of the present application embodiment is shown. Figure 2 .

[0021] Fig.14 The partial three-dimensional diagram of the tablet pressing unit in the embodiment of the present application is shown. Figure 1 .

[0022] Fig.15 The partial three-dimensional diagram of the tablet pressing unit in the embodiment of the present application is shown. Figure 2 .

[0023] Fig.16 The partial three-dimensional diagram of the tablet pressing unit in the embodiment of the present application is shown. Figure 3 .

[0024] Markings in the figure: feeding unit 1, side plate 11, first bracket 111, n-shaped bracket 112, side rod 12, second bracket 121, powder barrel 13, top cover 131, slider 132, square groove 133, powder valve 14, feeding pipe 15, first linear mechanism 16, third bracket 161, second linear mechanism 17, L-shaped block 18, collecting unit 2, third linear mechanism 21, fourth bracket 211, lifting plate 212, first rotating motor 22, rotating plate 23, collecting ring 24, tangent groove 241, positioning groove 242, extension block 25, slot 251, mounting seat 252, mounting rod 253, bottom mold 26, sleeve 261, sleeve hole 262, bottom mold groove 263, outer ring 264, sleeve 265, connecting piece 266, top pressure block 267, receiving portion 268, hemispherical groove 269, fourth linear mechanism 27, fifth bracket 271 , the fifth linear mechanism 28, the support block 281, the air clamp 29, the batch transfer unit 3, the sixth linear mechanism 31, the inverted L-shaped bracket 311, the square plate 312, the horizontal plate 313, the seventh linear mechanism 32, the vertical plate 321, the clamping block 33, the support plate 331, the eighth linear mechanism 34, the sixth bracket 341, the ninth linear mechanism 35, the second rotating motor 36, the rotating block 361, the L-shaped plate 37, the tenth linear mechanism 38, the clamping plate 39, the distribution unit 4, the first conveyor belt conveyor 41, the seventh bracket 411, the second conveyor belt conveyor 42, the pressing unit 5, the eleventh linear mechanism 51, the trolley 52, the twelfth linear mechanism 53, the thirteenth linear mechanism 54, the inverted T-block 541, the round rod 55, the hydraulic press 56, the pressing plate 57, the branch part 571, the pressing roller 572, the pressing table 58, the ninth bracket 581, the positioning block 582, and the adjusting block 583. DETAILED DESCRIPTION

[0025] The present application is further described below in conjunction with the accompanying drawings and embodiments.

[0026] like Figure 1 to Figure 16 The powder conveying and tableting equipment for lithium iron phosphate testing shown includes a feeding unit 1, a collecting unit 2, a batch transfer unit 3, a distribution unit 4, and a tableting unit 5.

[0027] like Figure 1~Figure 4As shown, the feeding unit 1 is used for temporarily storing lithium iron phosphate powder and unloading it. The feeding unit 1 includes a horizontal side plate 11 and a pair of side rods 12 arranged in parallel on one side thereof and spaced apart in the height direction. Specifically, a first bracket 111 is provided at the lower end of the side plate 11, and a plurality of n-shaped racks 112 are provided at the upper end of the side plate 11. The lower end of a vertical side of the n-shaped rack 112 is fixed to the upper end surface of the side rod 12 located above, and a second bracket 121 is provided at the lower end of the side rod 12 located below. A plurality of powder barrels 13 are provided between the side plate 11 and the side rod 12 along the length direction of the side rod 11. Different powder barrels 13 are filled with lithium iron phosphate powder produced in different batches and used for testing respectively. A top cover 131 is provided at the upper end of the powder barrel 13, and a slider 132 is provided at one end of the outer peripheral side of the powder barrel 13 to slide between the two side rods 12. The slider 132 is provided with a square groove 133 which passes through from top to bottom. A powder valve 14 is mounted at the lower end of the powder barrel 13. The powder valve 14 A feeding tube 15 is assembled at the lower end, and the inner diameter of the feeding tube 15 gradually decreases from top to bottom. The powder barrel 13 and the powder valve 14, as well as the powder valve 14 and the feeding tube 15 are all connected by flanges, so that after multiple feedings, the powder barrel 13, the powder valve 14 and the feeding tube 15 can be disassembled and purged to remove powder residue and avoid affecting subsequent tests. The feeding unit 1 also includes a first linear mechanism 16 which is arranged on the outside of the side rod 12 and whose sliding direction is parallel to the length direction of the side rod 12. The lower ends of the two ends of the first linear mechanism 16 are respectively provided with third brackets 161. The sliding end of the first linear mechanism 16 is vertically provided with a second linear mechanism 17. The upper end of the output shaft of the second linear mechanism 17 is provided with an L-shaped block 18. The vertical portion of the L-shaped block 18 matches the square groove 133. After the L-shaped block 18 is inserted into the square groove 133, the powder barrel 13 is moved out from between the side plate 11 and the side rod 12 through the first linear mechanism 16.

[0028] like Figure 1 , Figure 5~Figure 11As shown, the collecting unit 2 is arranged at one side of the feeding unit 1, and includes a third linear mechanism 21 arranged vertically, a lifting plate 212 is arranged at the upper end of the output shaft, a fourth bracket 211 is arranged at the lower end of the third linear mechanism 21, a first rotating motor 22 is arranged vertically at one end of the lifting plate 212, and a collecting ring 24 is assembled at the upper end of the output shaft of the first rotating motor 22. Specifically, a rotating plate 23 is arranged at the upper end of the output shaft of the first rotating motor 22, a plurality of clamping plates are arranged on the outer peripheral side of the rotating plate 23, a plurality of extending blocks 25 are arranged on the inner peripheral side of the collecting ring 24, a clamping groove 251 matching with the clamping plate is opened at the bottom of one end of the extending block 25, and when the clamping plate rises, it is clamped in the clamping groove 251, and the outer peripheral side of the collecting ring 24 is also opened. A pair of tangent grooves 241 are provided, and the axial direction of the tangent grooves 241 is parallel to the circumferential tangent direction of the collecting ring 24. The bottom end surface of the collecting ring 24 is also provided with a plurality of positioning grooves 242 in a circumferential array. The upper end surface of the collecting ring 24 is provided with a plurality of mounting seats 252 respectively located above the positioning grooves 242 in a circumferential array. The upper end of the mounting seat 252 is equipped with a bottom mold 26 for loading the powder discharged from the feed pipe 15 below the powder barrel 13 driven by the L-shaped block 18. Specifically, a plurality of mounting rods 253 are provided on the mounting seat 252, and a plurality of sleeves 261 are provided on the outer peripheral side of the bottom mold 26. A plurality of sleeves 261 are provided on the sleeve 261, which are respectively matched with the mounting rods 253. The bottom mold 26 has a hole 262, and a bottom mold groove 263 is provided at the upper end of the bottom mold 26, and its inner diameter is the same as the outer diameter of the test piece to be pressed. The top kit is assembled at the upper end of the bottom mold 26, and the top kit includes an outer ring 264, and the lower end of the outer ring 264 is provided with a plurality of sheath parts 265 located on the outer peripheral side of the bottom mold 26 when assembled. The inner peripheral side of the outer ring 264 is provided with a plurality of connecting pieces 266, and the inner end of the connecting piece 266 is provided with a top pressing block 267. Specifically, the outer ring 264 and the top pressing block 267 are both made of metal materials, and the connecting piece 266 is made of plastic. The two ends of the connecting piece 266 are respectively bonded to the top pressing block 267 and the outer ring 264 by epoxy glue. After the top pressing block 267 is pressed down, it is disconnected from the connection The outer diameter of the top pressing block 267 is the same as the outer diameter of the test piece to be pressed, the upper end of the top pressing block 267 is provided with a receiving portion 268, and the upper end of the receiving portion 268 is provided with a hemispherical groove 269, and one side of the third linear mechanism 21 is provided with a loading and unloading component for removing and assembling the top kit on the bottom mold 26, the loading and unloading component includes a vertically arranged fourth linear mechanism 27, the upper end of the output shaft of which is provided with a horizontally arranged fifth linear mechanism 28, the lower end of the fourth linear mechanism 27 is provided with a fifth bracket 271, one end of the output shaft of the fifth linear mechanism 28 is provided with a supporting block 281, one end of the supporting block 281 is provided with an inclined surface, and the inclined surface is provided with an air clamp 29 for clamping the sheath portion 265.

[0029] like Figure 1 , Figure 5 , Fig.12 , Fig.13As shown, the batch transfer unit 3 is arranged at one side of the collecting unit 2, and is used to transfer the collecting ring 24. The batch transfer unit 3 includes a sixth linear mechanism 31, one side of which is provided with an inverted L-shaped bracket 311, one end of the output shaft of the sixth linear mechanism 31 is provided with a square plate 312, the lower end of the square plate 312 is provided with a horizontal plate 313, and the lower end of the horizontal plate 313 is provided with a pair of seventh linear mechanisms 32 with opposite output directions, one end of the output shaft of the seventh linear mechanism 32 is provided with a vertical plate 321, the lower end of the vertical plate 321 is provided with a clamping block 33, the inner side of the clamping block 33 is provided with an arc surface matching the outer circumference of the collecting ring 24, and the lower end of the arc surface is provided with a supporting plate 331, and the lower end of the arc surface is provided with an eighth linear mechanism 34, and the output direction of the sixth linear mechanism 31 is consistent with the sliding direction of the eighth linear mechanism 34 The eighth linear mechanism 34 is parallel to the horizontal direction, and the lower ends of both ends of the eighth linear mechanism 34 are respectively provided with sixth brackets 341, the sliding end of the eighth linear mechanism 34 is provided with a ninth linear mechanism 35, one end of the output shaft of the ninth linear mechanism 35 is provided with a hanging block, and the lower end of the hanging block is provided with a second rotating motor 36, and one end of the output shaft of the second rotating motor 36 is provided with a rotating block 361, and one side of the rotating block 361 is provided with an L-shaped plate 37, and the horizontal part of the L-shaped plate 37 is used to extend into the card slot 251, and one side of the vertical part of the L-shaped plate 37 is provided with a tenth linear mechanism 38, and one end of the output shaft of the tenth linear mechanism 38 is provided with a clamping plate 39 matching the horizontal part of the L-shaped plate 37. After the extension block 25 is stably clamped by the horizontal part of the L-shaped plate 37 and the clamping plate 39, the collection ring 24 can be moved by the ninth linear mechanism 35 and the eighth linear mechanism 34.

[0030] like Figure 1 , Figure 5 As shown, the distribution unit 4 is arranged on one side of the batch transfer unit 3, and is used for distributing the collection rings 24 one by one to different positions for tableting and loading. The distribution unit 4 includes a first conveyor belt conveyor 41 arranged below the sixth linear mechanism 31 and parallel to it, and the upper end surface of the conveyor belt is slightly lower than the upper end surface of the support plate 331, specifically in this embodiment, 5mm lower, the width of the first conveyor belt conveyor 41 is less than the spacing between the two clamping blocks 33 when clamping the collection ring 24, and a plurality of seventh brackets 411 are provided at the lower end of the first conveyor belt conveyor 41, and a plurality of second conveyor belt conveyors 42 located at the same height and vertically arranged therewith are provided on one side of the first conveyor belt conveyor 41, and a plurality of eighth brackets are provided at the lower end of the second conveyor belt conveyor 42. For convenience of representation, only three second conveyor belt conveyors 42 are shown in the accompanying drawings. In actual circumstances, more second conveyor belt conveyors 42 can be provided, for example, more than ten, to meet the requirements of simultaneously performing multiple groups of powder tableting on the collection ring 24.

[0031] like Figure 1 , Figure 14~Figure 16As shown, the tablet pressing unit 5 is arranged at one end of the dispensing unit 4, and is used to press the powder in each bottom mold 26 on the collecting ring 24 into a test tablet. The tablet pressing unit 5 includes an eleventh linear mechanism 51 and a hydraulic press 56, the same number as the second conveyor belt conveyor 42. Specifically, the hydraulic press 56 can be arranged under a hanger, and the hanger is fixed under the ceiling of the test room. A trolley 52 is provided at one end of the output shaft of the eleventh linear mechanism 51, and a trolley 52 is vertically provided on the trolley 52. ​​A twelfth linear mechanism 53 is horizontally provided on the upper end of the output shaft of the trolley 52. The output directions of the linear mechanism 54, the thirteenth linear mechanism 54 and the twelfth linear mechanism 53 are parallel, and are also parallel to the conveying direction of the second conveyor belt conveyor 42. An inverted T-shaped block 541 is provided at one end of the output shaft of the thirteenth linear mechanism 54, and round rods 55 matching the tangent groove 241 are provided at both ends of one side thereof, and a pressing plate 57 is provided at the lower end of the pressing rod of the hydraulic press 56. The outer peripheral side of the pressing plate 57 is arrayed with a number of branch portions 571 matching the bottom mold 26 on the collecting ring 24, and the lower end of each branch portion 571 is divided into A pressure roller 572 is provided, and a spherical portion matching the hemispherical groove 269 is formed at the lower end of the pressure roller 572. A pressure platform 58 located at the outer end of the conveying end of the second conveyor belt 42 is provided below the pressure plate 57. When the round rod 55 penetrates the tangent groove 241 located on the second conveyor belt 42, the output shaft of the eleventh straight line mechanism 51 is located between the pressure plate 57 and the pressure platform 58. A plurality of ninth brackets 581 are provided at the lower end of the pressure platform 58 of the collecting ring 24, and a plurality of ninth brackets 581 are provided on the upper end surface of the pressure platform 58, which are respectively matched with the positioning grooves 242. A matching positioning block 582 and an adjustment block 583 located at one end near the second conveyor belt conveyor 42 have an inclined upper end surface and are used to enable the collecting ring 24 to move toward the eleventh straight-line mechanism 51 during the descent process if the collecting ring 24 transported by it slides away from the eleventh straight-line mechanism 51 when the output shaft of the eleventh straight-line mechanism 51 is retracted, so that each positioning groove 242 can accurately fall on the positioning block 582, thereby stabilizing the position of the collecting ring 24 on the press table 58.

[0032] In this embodiment, the first linear mechanism 16 and the eighth linear mechanism 34 both adopt rodless linear cylinders, and the second linear mechanism 17, the third linear mechanism 21, the fourth linear mechanism 27, the fifth linear mechanism 28, the sixth linear mechanism 31, the seventh linear mechanism 32, the ninth linear mechanism 35, the tenth linear mechanism 38, the eleventh linear mechanism 51, the twelfth linear mechanism 53, and the thirteenth linear mechanism 54 all adopt single-axis linear cylinders.

[0033] Working method: Taking the tableting of lithium iron phosphate powder in a single collecting ring 24 as an example, first, the collecting ring 24 needs to be assembled: first, a bottom mold 26 of a predetermined specification is assembled on each mounting seat 252, and a matching top assembly is also pre-placed on it. Figure 5As shown, it is placed on the clamping block 33, so that even if the third linear mechanism 21 does not lift the clamping slot 251, the collecting ring 24 will not fall, and the clamping block 33 also plays a role in limiting the collecting ring 24 when it rotates.

[0034] Then place the powder cartridge 13 on the feeding unit 1, as shown in FIG. Figure 2 As shown, multiple powder tubes 13 can be placed between the side plate 11 and the side rod 12 from the upper right corner of the figure for standby use. Then, when needed, the L-shaped block 18 is controlled by the first linear mechanism 16 and the second linear mechanism 17 from the lower left position of the side plate 11 in the figure to connect the slider 132 from bottom to top, and then drag it out of the area between the side plate 11 and the side rod 12, so that the discharge port of the discharge pipe 15 under the controlled powder tube 13 is located above a bottom mold 26 farthest from the first conveyor belt conveyor 41.

[0035] Next, start loading the powder. Lift the card plate through the third linear mechanism 21 so that it is stuck in the card slot 251. Then, before each loading, adjust the position of the air clamp 29 through the fourth linear mechanism 27 and the fifth linear mechanism 28. Then, clamp the top kit through the air clamp 29. Then, move the air clamp 29 so that the top kit will not block the powder discharge. Add the lithium iron phosphate powder required for tableting into the bottom die groove 263 through the powder valve 14. Then, cover the top kit on the bottom die 26 again. And so on. Rotate the collecting ring 24 multiple times through the first rotating motor 22, and perform the above-mentioned powder loading process until the powder is loaded in the bottom die groove 263 of all the bottom molds 26. After loading, make the axes of the two tangent grooves 241 parallel to the axis of the round rod 55, and at this time, the end opening of one card slot 251 is facing the direction of the outer end of the first conveyor belt conveyor 41.

[0036] The above-mentioned collecting ring 24 is then transferred through the batch transfer unit 3: first, the ninth linear mechanism 35 is moved to the end away from the collecting unit 2 through the eighth linear mechanism 34 to avoid obstruction, and then the card plate is lowered through the third linear mechanism 21 to make it disengage from the card slot 251, and then the collecting ring 24 is moved to the conveying starting end of the first conveyor belt conveyor 41 through the sixth linear mechanism 31. After at least half of the collecting ring 24 is located on the first conveyor belt conveyor 41, the clamping blocks 33 are controlled by the seventh linear mechanisms 32 to release the clamping of the collecting ring 24.

[0037] Then, the collecting ring 24 is transported a predetermined distance by the first conveyor belt conveyor 41. Specifically, the predetermined distance here means that the collecting ring 24 is transported to one end of the second conveyor belt conveyor 42 corresponding to the vacant pressing table 58, and the eighth linear mechanism 34 and the second rotating motor 36 are jointly controlled to shovel the horizontal part of the L-shaped plate 37 into the card groove 251, and then the clamping plate 39 is controlled by the tenth linear mechanism 38 to clamp the collecting ring 24.

[0038] The collecting ring 24 is then transferred to a predetermined second conveyor belt conveyor 42 by the ninth linear mechanism 35, and then the collecting ring 24 is released from the clamping.

[0039] As the second conveyor belt conveyor 42 conveys the collection ring 24, the tangent groove 241 is sleeved onto the round rod 55. Preferably, the outer peripheral side of the collection ring 24 abuts against the side of the inverted T-shaped block 541. Then, the round rod 55 is retracted by the thirteenth linear mechanism 54, thereby retracting the collection ring 24. When the collection ring 24 is located above the press table 58, the collection ring 24 is lowered by the twelfth linear mechanism 53. When all the positioning grooves 242 are sleeved on the positioning block 582, the collection ring 24 is stably located on the press table 58. 8, and then the round rod 55 is separated from the top of the pressing platform 58 through the eleventh straight line mechanism 51, and then the hydraulic press 56 controls each pressing roller 572 to contact the receiving portion 268, specifically, the spherical portion is controlled to contact the hemispherical groove 269, so that the top pressing block 267 is separated from the connecting piece 266, and the connecting piece 266 is pressed on the upper end surface of the bottom mold 26, and the top pressing block 267 enters the bottom mold groove 263, and the powder is pressed into a test piece between the top pressing block 267 and the bottom surface of the bottom mold groove 263.

[0040] Then the hydraulic rod of the hydraulic press 56 is lifted to take out the collecting ring 24. For the demoulding of the test piece, each bottom mold 26 can be removed, then it is inverted and knocked, and the top pressing block 267 falls first, and then the test piece will fall.

[0041] Since the time for pressing the test piece is usually long, during the pressing, the feeding unit 1 , the collecting unit 2 , the batch transfer unit 3 , and the dispensing unit 4 can simultaneously operate the next batch of powder.

[0042] The above are only some of the embodiments listed in this application and are not intended to limit this application.

Claims

1. A powder conveying and tableting equipment for lithium iron phosphate testing, characterized in that: include: A feeding unit (1) is used to temporarily store lithium iron phosphate powder and discharge it; The collecting unit (2) is arranged on one side of the feeding unit (1), and comprises a third linear mechanism (21) arranged vertically, a first rotating motor (22) being arranged vertically on the upper end of the output shaft of the third linear mechanism (21), a collecting ring (24) being arranged on the upper end of the output shaft of the first rotating motor (22), a plurality of mounting seats (252) being arranged in a circular array on the upper end surface of the third linear mechanism (21), a bottom die (26) for loading powder being arranged on the upper end of the mounting seat (252), a bottom die groove (263) being arranged on the upper end of the third linear mechanism (21), and a collecting ring (24) being arranged on the upper end surface of the third linear mechanism (21), a plurality of mounting seats (252) being arranged on the upper end ... ) has an inner diameter that is the same as the outer diameter of the test piece, a top set is mounted on the upper end of the bottom mold (26), which includes an outer ring (264), a plurality of connecting pieces (266) are provided on the inner circumference of the outer ring (264), a top pressing block (267) is provided at the inner end of the connecting piece (266), and the outer diameter of the top pressing block (267) is the same as the outer diameter of the test piece, a receiving portion (268) is provided at the upper end of the top pressing block (267), and a loading and unloading component for removing and assembling the top set on the bottom mold (26) is provided on one side of the third linear mechanism (21); A batch transfer unit (3) is provided on one side of the collection unit (2) and is used to transfer the collection ring (24); A distribution unit (4) is provided on one side of the batch transfer unit (3) and is used to distribute the collection rings (24) one by one to different positions for tableting and loading; The tablet pressing unit (5) is arranged at one end of the distribution unit (4), and comprises a plurality of ring transfer mechanisms for receiving the collection ring (24) and a plurality of hydraulic presses. A pressing plate (57) is provided at the lower end of the pressing rod of the hydraulic press (56). A plurality of pressing rollers (572) matching the receiving portion (268) are respectively provided at the lower end of the pressing plate (57). A pressing platform (58) is provided below the pressing plate (57).

2. The lithium iron phosphate testing powder conveying and tableting equipment according to claim 1, characterized in that: The feeding unit (1) comprises a horizontal side plate (11) and a pair of side rods (12) arranged parallel to one side of the side plate (11) and spaced apart in a height direction. A plurality of powder barrels (13) are arranged between the side plate (11) and the side rods (12) along the length direction of the side rods (11). A slider (132) is provided at one end of the outer peripheral side of the powder barrel (13) and is slidably matched between the two side rods (12). The slider (132) is provided with a square groove (133) extending through the upper and lower parts. A powder valve (14) is arranged at the lower end of the powder barrel (13). A feed pipe (15) is arranged at the lower end of the powder valve (14). The feeding unit (11) further comprises a first linear mechanism (16) arranged at the outer side of the side rod (12) and having a sliding direction parallel to the length direction of the side rod (12). A second linear mechanism (17) is vertically arranged at the sliding end of the first linear mechanism (16). An L-shaped clamping block (18) is provided at the upper end of the output shaft of the second linear mechanism (17). The vertical portion of the L-shaped clamping block (18) matches the square groove (133).

3. The lithium iron phosphate testing powder conveying and tableting equipment according to claim 1, characterized in that: A rotating plate (23) is provided at the upper end of the output shaft of the first rotating motor (22), a plurality of clamping plates are provided on the outer circumference of the rotating plate (23), a plurality of extension blocks (25) are provided on the inner circumference of the collecting ring (24), and a clamping groove (251) matching the clamping plate is provided at the bottom of one end of the extension block (25).

4. The lithium iron phosphate testing powder conveying and tableting equipment according to claim 1, characterized in that: A pair of tangent grooves (241) are also provided on the outer circumferential side of the collecting ring (24), and the axial direction of the tangent grooves (241) is parallel to the circumferential tangent direction of the collecting ring (24). The bottom end surface of the collecting ring (24) is also provided with a plurality of positioning grooves (242) in a circumferential array. The pressing platform (58) is provided at the conveying end of the second conveyor belt conveyor (42), and the upper end surface of the pressing platform (58) is provided with a plurality of positioning blocks (582) respectively matching the positioning grooves (242).

5. The lithium iron phosphate testing powder conveying and tableting equipment according to claim 1, characterized in that: The loading and unloading assembly comprises a fourth linear mechanism (27) arranged vertically, the upper end of the output shaft of which is provided with a fifth linear mechanism (28) arranged horizontally, and one end of the output shaft of the fifth linear mechanism (28) is provided with an air clamp (29).

6. The lithium iron phosphate testing powder conveying and tableting equipment according to claim 3, characterized in that: The batch transfer unit (3) comprises a sixth linear mechanism (31), one end of the output shaft of which is provided with a pair of seventh linear mechanisms (32) with opposite output directions, one end of the output shaft of the seventh linear mechanism (32) is provided with a vertical plate (321), the lower end of the vertical plate (321) is provided with a clamping block (33), the inner side of the clamping block (33) is provided with an arc surface matching the outer peripheral side of the collection ring (24), an eighth linear mechanism (34) is provided below one side of the sixth linear mechanism (31), the output direction of the sixth linear mechanism (31) and the sliding direction of the eighth linear mechanism (34) are opposite to each other. The eighth linear mechanism (34) is parallel to the first linear mechanism, a ninth linear mechanism (35) is provided on the sliding end of the eighth linear mechanism (34), a second rotary motor (36) is provided at one end of the output shaft of the ninth linear mechanism (35), a rotating block (361) is provided at one end of the output shaft of the second rotary motor (36), an L-shaped plate (37) is provided on one side of the rotating block (361), a horizontal portion of the L-shaped plate (37) is used to extend into the card slot (251), a tenth linear mechanism (38) is provided on one side of the vertical portion of the L-shaped plate (37), and a clamping plate (39) matching the horizontal portion of the L-shaped plate (37) is provided on one end of the output shaft.

7. The lithium iron phosphate testing powder conveying and tableting equipment according to claim 4, characterized in that: The distribution unit (4) comprises a first conveyor belt conveyor (41) disposed below the sixth linear mechanism (31) and arranged parallel to the first linear mechanism (31), and a plurality of second conveyor belt conveyors (42) located at the same height as the first linear mechanism (41) and arranged perpendicular to the first linear mechanism (31) are disposed on one side of the first conveyor belt conveyor (41).

8. The lithium iron phosphate testing powder conveying and tableting equipment according to claim 7, characterized in that: The number of the ring shifting mechanisms is the same as that of the second conveyor belt conveyor (42), and the ring shifting mechanism comprises an eleventh linear mechanism (51), one end of which is provided with a trolley (52), a twelfth linear mechanism (53) is vertically provided on the trolley (52), a thirteenth linear mechanism (54) is horizontally provided on the upper end of the output shaft, and one end of the output shaft of the thirteenth linear mechanism (54) is provided with a pair of round rods (55) respectively matching the tangent groove (241).

9. The lithium iron phosphate testing powder conveying and tableting equipment according to claim 8, characterized in that: A hemispherical groove (269) is formed at the upper end of the receiving portion (268), and a spherical portion matching the hemispherical groove (269) is formed at the lower end of the pressing roller (572).

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