A powder conveying and tablet pressing device for lithium iron phosphate testing

Abstract

The present invention discloses a powder conveying and tablet pressing device for lithium iron phosphate testing, belonging to the technical field of equipment related to the testing of lithium-ion battery electrode materials, and comprising a feeding unit, a collecting unit, a batch transfer unit, a distribution unit, and a tablet pressing unit. The feeding unit is used for temporarily storing lithium iron phosphate powder and discharging it. The collecting unit includes a collecting ring, and a plurality of mounting seats are arranged on the upper end surface of the collecting ring in a circumferential array. A bottom mold for loading powder is assembled on the upper end of the mounting seat, and a top kit is assembled on the upper end of the bottom mold. The batch transfer unit is used for transferring the collecting ring. The distribution unit is used for distributing the collecting rings one by one to different positions for tablet pressing. The tablet pressing unit includes a plurality of ring transfer mechanisms for receiving the collecting rings and a plurality of hydraulic presses. The present invention can automatically and orderly load lithium iron phosphate powder, batch transfer phosphoric acid powder and distribute it to each tablet pressing position for batch tablet pressing, and the bottom mold and the top kit can be conveniently replaced according to the tablet pressing requirements, with strong versatility.

Description

Technical Field

[0001] The present invention belongs to the technical field of equipment related to the testing of lithium iron phosphate battery electrode materials, and particularly relates to a powder conveying and tablet pressing device for lithium iron phosphate testing. Background Art

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

[0003] When producing lithium iron phosphate powder in large quantities, sometimes a large number of samples are needed, and a large number of test pieces are pressed for testing. When using a press to press tablets, it usually takes 3 to 5 minutes and cannot be too fast. However, putting the powder into the mold of the press is relatively fast. Therefore, the pressing process has become the main bottleneck in improving the preparation efficiency of test pieces. 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 pieces, including adjusting according to the requirements of different instruments. For example, a small-diameter test piece of 10 mm is commonly used for X-ray diffraction, and test pieces of 12 mm or 15 mm that match the size of the battery case are used for electrochemical testing. It also includes testing the radial distribution of parameters such as material density and porosity by pressing tablets of different diameters, such as 10 mm, 15 mm, and 20 mm, verifying the uniformity of the pressing process, or studying the edge effect of larger-diameter test pieces. Therefore, a device that can conveniently and frequently replace the mold to change the size of the test piece is also needed. Summary of the Invention

[0004] In view of the above defects, the present invention provides a powder conveying and tablet pressing device for lithium iron phosphate testing, which can automatically and orderly load lithium iron phosphate powder, batch transfer phosphoric acid powder and distribute it to each tablet pressing position, and batch press tablets. Moreover, the bottom mold and the top kit can be conveniently replaced according to the tablet pressing requirements, and the versatility is relatively strong.

[0005] In order to achieve the purpose of the present invention, the following technologies are proposed:

[0006] A powder conveying and tablet pressing device for lithium iron phosphate testing, comprising:

[0007] A feeding unit for temporarily storing lithium iron phosphate powder and discharging it;

[0008] The collection unit is arranged on one side of the feeding unit and includes a third linear mechanism arranged vertically. The upper end of its output shaft is vertically provided with a first rotating motor. The upper end of the output shaft of the first rotating motor is equipped with a collection ring. A plurality of mounting seats are arranged in a circumferential array on its upper end surface. The upper end of the mounting seat is equipped with a bottom mold for loading powder. A bottom mold groove is opened at its upper end. The inner diameter of the bottom mold groove is the same as the outer diameter of the test piece. A top kit is assembled on the upper end of the bottom mold. It includes an outer ring. A number of connecting pieces are arranged on the inner peripheral side of the outer ring. A top pressing block is arranged at the inner end of the connecting piece. Its outer diameter 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. A loading and unloading assembly for removing and assembling the top kit on the bottom mold is arranged on one side of the third linear mechanism.

[0009] The batch transfer unit is arranged on one side of the collection unit and is used to transfer the collection ring.

[0010] The distribution unit is arranged on one side of the batch transfer unit and is used to distribute the collection rings one by one to different positions for tablet pressing and feeding.

[0011] The tablet pressing unit is arranged at one end of the distribution unit and includes a plurality of ring transfer mechanisms for receiving the collection rings and a plurality of hydraulic presses. The lower end of the pressing rod of the hydraulic press is provided with a pressing plate. A plurality of pressing rollers matching the receiving portions are respectively arranged at the lower end of the pressing plate. A pressing table is arranged below the pressing plate.

[0012] The beneficial effects of this technical solution are as follows:

[0013] 1. Lithium iron phosphate powder is respectively loaded onto the bottom molds on the collection ring of the collection unit through the feeding unit. Then, after the loading in each bottom mold on one collection ring is completed, the collection ring can be distributed under the idle hydraulic press of the tablet pressing unit for the pressing of the test piece, which can improve the preparation efficiency of the test piece.

[0014] 2. Before loading the lithium iron phosphate powder, by placing different bottom molds and top kits on the mounting seats, test pieces with different diameters can be pressed. And the top pressing block of the top kit can be separated under the pressure of the hydraulic press and used as the upper pressing plate, without the need to adjust the parts of the tablet pressing unit again. Description of the Drawings

[0015] Figure 1 Shows the overall three-dimensional view of the embodiment of the present application.

[0016] Figure 2 Shows the three-dimensional view of the feeding unit of the embodiment of the present application.

[0017] Figure 3 Shows the partial three-dimensional view of the feeding unit of the embodiment of the present application Figure 1 .

[0018] Figure 4 Shows the partial three-dimensional view of the feeding unit of the embodiment of the present application Figure 2 .

[0019] Figure 5 Shows a three - dimensional view of the overall collection unit, the overall batch transfer unit, and the partial distribution unit of the embodiments of the present application.

[0020] Figure 6 Shows a three - dimensional view of the collection unit of the embodiments of the present application.

[0021] Figure 7 Shows the embodiments of the present application Figure 6 Enlarged view of part A.

[0022] Figure 8 Shows a partial three - dimensional Figure 1 .

[0023] Figure 9 Shows a partial three - dimensional Figure 2 .

[0024] Figure 10 Shows a partial three - dimensional Figure 3 .

[0025] Figure 11 Shows an exploded view of the partial collection unit of the embodiments of the present application.

[0026] Figure 12 Shows a partial three - dimensional Figure 1 of the batch transfer unit of the embodiments of the present application.

[0027] Figure 13 Shows a partial three - dimensional Figure 2 of the batch transfer unit of the embodiments of the present application.

[0028] Figure 14 Shows a partial three - dimensional Figure 1 of the tablet pressing unit of the embodiments of the present application.

[0029] Figure 15 Shows a partial three - dimensional Figure 2 of the tablet pressing unit of the embodiments of the present application.

[0030] Figure 16 Shows a partial three - dimensional Figure 3 of the tablet pressing unit of the embodiments of the present application.

[0031] 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

[0032] The present application is further described below in conjunction with the accompanying drawings and embodiments.

[0033] like Figures 1 to 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.

[0034] like Figures 1 to 4As shown, the feeding unit 1 is used to temporarily store lithium iron phosphate powder and feed it. The feeding unit 1 includes a horizontal side plate 11 and a pair of side rods 12 arranged in parallel on one side of the side plate 11 and spaced along 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 brackets 112 are provided at the upper end of the side plate 11. The lower end of a vertical side of the n-shaped bracket 112 is fixed to the upper end surface of the upper side rod 12. A second bracket 121 is provided at the lower end of the lower side rod 12. A plurality of powder cylinders 13 are arranged between the side plate 11 and the side rods 12 along the length direction of the side rod 11. Different powder cylinders 13 contain lithium iron phosphate powder produced in different batches and are used for testing respectively. The upper end of the powder cylinder 13 is provided with a top cover 131. One end of the outer peripheral side of the powder cylinder 13 is provided with a slider 132 that is slidably fitted between the two side rods 12. A square groove 133 is provided through the slider 132 up and down. A powder valve 14 is assembled at the lower end of the powder cylinder 13, and a feeding pipe 15 is assembled at the lower end of the powder valve 14. The inner diameter of the feeding pipe 15 gradually decreases from top to bottom. Between the powder cylinder 13 and the powder valve 14, and between the powder valve 14 and the feeding pipe 15, they are all connected by flanges, which is convenient for disassembling and flushing the powder cylinder 13, the powder valve 14, and the feeding pipe 15 after multiple feedings to remove powder residues and avoid affecting subsequent tests. The feeding unit 1 further includes a first linear mechanism 16 provided outside the side rod 12 and whose sliding direction is parallel to the length direction of the side rod 12. Third brackets 161 are respectively provided at the lower ends of both ends of the first linear mechanism 16. A second linear mechanism 17 is vertically provided 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 part of the L-shaped clamping block 18 matches the square groove 133. After the L-shaped clamping block 18 is inserted into the square groove 133, the powder cylinder 13 is moved out from between the side plate 11 and the side rods 12 through the first linear mechanism 16.

[0035] As Figure 1 , Figures 5 to 11As shown in the figure, the collection unit 2 is arranged on one side of the feeding unit 1 and includes a third linear mechanism 21 arranged vertically. The upper end of the output shaft thereof is provided with a lifting plate 212, and the lower end of the third linear mechanism 21 is provided with a fourth bracket 211. One end of the lifting plate 212 is vertically provided with a first rotating motor 22, and the upper end of the output shaft of the first rotating motor 22 is assembled with a collection ring 24. Specifically, the upper end of the output shaft of the first rotating motor 22 is provided with a rotating plate 23, and a plurality of clamping plates are arranged on the outer peripheral side of the rotating plate 23. A plurality of extension blocks 25 are arranged on the inner peripheral side of the collection ring 24. A clamping groove 251 matching the clamping plate is opened at the bottom of one end of the extension block 25. When the clamping plate rises, it is clamped in the clamping groove 251. A pair of tangent grooves 241 are also opened on the outer peripheral side of the collection ring 24. The axial direction of the tangent groove 241 is parallel to the circumferential tangent direction of the collection ring 24. A plurality of positioning grooves 242 are arranged on the bottom end surface of the collection ring 24 in a circumferential array. A plurality of mounting seats 252 respectively located above the positioning grooves 242 are arranged on the upper end surface of the collection ring 24 in a circumferential array. A bottom mold 26 for loading the powder discharged from the discharge pipe 15 below the powder cylinder 13 driven by the L-shaped clamping block 18 is assembled on the upper end of the mounting seat 252. Specifically, a plurality of mounting rods 253 are arranged on the mounting seat 252, and a plurality of sleeve parts 261 are arranged on the outer peripheral side of the bottom mold 26. A plurality of sleeve holes 262 respectively matching the mounting rods 253 are opened on the sleeve parts 261. A bottom mold groove 263 is opened on 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. A top kit is assembled on the upper end of the bottom mold 26. The top kit includes an outer ring 264. A plurality of sheath parts 265 located on the outer peripheral side of the bottom mold 26 during assembly are arranged at the lower end of the outer ring 264. A plurality of connecting pieces 266 are arranged on the inner peripheral side of the outer ring 264. A top pressing block 267 is arranged at the inner end of the connecting piece 266. Specifically, both the outer ring 264 and the top pressing block 267 are made of metal materials, and the connecting piece 266 is made of plastic. Both ends of the connecting piece 266 are bonded to the top pressing block 267 and the outer ring 264 through epoxy glue. After the top pressing block 267 is pressed down, it disconnects from the connecting piece 266. The outer diameter of the top pressing block 267 is the same as the outer diameter of the test piece to be pressed. A receiving part 268 is arranged at the upper end of the top pressing block 267, and a hemispherical groove 269 is opened at the upper end of the receiving part 268. An unloading and loading assembly for removing and assembling the top kit on the bottom mold 26 is arranged on one side of the third linear mechanism 21. The unloading and loading assembly includes a fourth linear mechanism 27 arranged vertically. The upper end of the output shaft thereof is provided with a fifth linear mechanism 28 arranged horizontally. 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 support block 281. One end of the support block 281 is provided with an inclined surface, and an air clamp 29 for clamping the sheath part 265 is arranged on the inclined surface.

[0036] As Figure 1 , Figure 5 , Figure 12 , Figure 13As shown in the figure, the batch transfer unit 3 is arranged on one side of the collection unit 2 and is used to transfer the collection ring 24. The batch transfer unit 3 includes a sixth linear mechanism 31, with an inverted L-shaped bracket 311 arranged on one side thereof. One end of the output shaft of the sixth linear mechanism 31 is provided with a square plate 312. A horizontal plate 313 is provided at the lower end of the square plate 312. A pair of seventh linear mechanisms 32 with opposite output directions are provided at the lower end of the horizontal plate 313. One end of the output shaft of the seventh linear mechanism 32 is provided with a vertical plate 321. A clamping block 33 is provided at the lower end of the vertical plate 321. An arc surface matching the outer peripheral side of the collection ring 24 is opened on the inner side of the clamping block 33. A support plate 331 is provided at the lower end of the arc surface. Below one side of the sixth linear mechanism 31 is provided with an eighth linear mechanism 34. The output direction of the sixth linear mechanism 31 is parallel to the sliding direction of the eighth linear mechanism 34. Sixth brackets 341 are respectively provided at the lower ends of both ends of the eighth linear mechanism 34. A ninth linear mechanism 35 is provided on the sliding end of the eighth linear mechanism 34. One end of the output shaft of the ninth linear mechanism 35 is provided with a hanging block. A second rotating motor 36 is provided at the lower end of the hanging block. One end of the output shaft of the second rotating motor 36 is provided with a rotating block 361. An L-shaped plate 37 is provided on one side of the rotating block 361. The horizontal part 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 part of the L-shaped plate 37. 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 stably clamping the extension block 25 through the horizontal part of the L-shaped plate 37 and the clamping plate 39, the collection ring 24 can be moved through the ninth linear mechanism 35 and the eighth linear mechanism 34.

[0037] As Figure 1 , Figure 5 shown in the figure, the distribution unit 4 is arranged on one side of the batch transfer unit 3 and is used to individually distribute the collection ring 24 to different positions for tablet pressing and feeding. The distribution unit 4 includes a first conveyor belt 41 arranged below the sixth linear mechanism 31 and parallel to it. The upper end surface of its conveyor belt is slightly lower than the upper end surface of the support plate 331. Specifically, in this embodiment, it is 5 mm lower. The width of the first conveyor belt 41 is smaller than the distance between the two clamping blocks 33 when clamping the collection ring 24. A plurality of seventh brackets 411 are provided at the lower end of the first conveyor belt 41. A plurality of second conveyor belts 42 are provided on one side of the first conveyor belt 41 at the same height and perpendicular to it. A plurality of eighth brackets are provided at the lower end of the second conveyor belt 42. For the convenience of representation, only three second conveyor belts 42 are shown in the drawings. In actual situations, more second conveyor belts 42 can be set, for example, more than ten, to meet the requirements of simultaneously performing multiple groups of powder tablet pressing on the collection ring 24.

[0038] As Figure 1 , Figures 14 to 16As shown in the figure, the tablet pressing unit 5 is provided at one end of the dispensing unit 4 and is used to press the powder in each bottom mold 26 on the collection ring 24 into test pieces. The tablet pressing unit 5 includes the eleventh linear mechanism 51 and the hydraulic press 56, the number of which is the same as that of the second conveyor 42. Specifically, the hydraulic press 56 can be arranged under the hanging bracket, and the hanging bracket is fixed under the ceiling of the test room. One end of the output shaft of the eleventh linear mechanism 51 is provided with a trolley 52. A twelfth linear mechanism 53 is vertically arranged on the trolley 52. The upper end of its output shaft is horizontally provided with a thirteenth linear mechanism 54. The output directions of the thirteenth linear mechanism 54 and the twelfth linear mechanism 53 are parallel and also parallel to the conveying direction of the second conveyor 42. One end of the output shaft of the thirteenth linear mechanism 54 is provided with an inverted T-shaped block 541. Circular rods 55 matching the tangent slots 241 are respectively arranged at both ends of one side surface thereof. The lower end of the pressing rod of the hydraulic press 56 is provided with a pressing plate 57. Branches 571 matching the bottom molds 26 on the collection ring 24 are arrayed on the outer peripheral side of the pressing plate 57. Pressing rollers 572 are respectively arranged at the lower ends of the branches 571. A spherical part matching the hemispherical groove 269 is formed at the lower end of the pressing roller 572. A pressing table 58 is arranged below the pressing plate 57 at the outer end of the conveying end of the second conveyor 42. When the circular rod 55 penetrates into the tangent slot 241 on the second conveyor 42, the output shaft of the eleventh linear mechanism 51 is located between the pressing plate 57 and the pressing table 58. A plurality of ninth brackets 581 are arranged at the lower end of the pressing table 58 of the collection ring 24. A plurality of positioning blocks 582 respectively matching the positioning slots 242 and an adjusting block 583 located at one end close to the second conveyor 42 are arranged on the upper end surface of the pressing table 58. The upper end surface of the adjusting block 583 is inclined. When the output shaft of the eleventh linear mechanism 51 retracts, if the collection ring 24 transported by it slides away from the eleventh linear mechanism 51, the collection ring 24 can move towards the eleventh linear mechanism 51 during the descending process, so that each positioning slot 242 can accurately fall onto the positioning block 582, making the position of the collection ring 24 on the pressing table 58 stable.

[0039] 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.

[0040] Working mode:

[0041] Taking the tablet pressing of the lithium iron phosphate powder in a single collection ring 24 as an example, first, it is necessary to assemble the collection ring 24: first, install the bottom molds 26 of a predetermined specification on each mounting seat 252, and the matching top kits are also pre-placed on them. In the initial state, the collection ring 24 is as 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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), the inner diameter of the bottom die groove (263) being the same as that of the test piece The bottom mold (26) has the same outer diameter, and the upper end of the bottom mold (26) is equipped with a top set, which includes an outer ring (264), a plurality of connecting pieces (266) are provided on the inner circumference of the outer ring (264), and a top pressing block (267) is provided at the inner end of the connecting piece (266), and the outer diameter of the connecting piece (266) is the same as the outer diameter of the test piece, and the upper end of the top pressing block (267) is provided with a receiving portion (268), and one side of the third linear mechanism (21) is provided with a loading and unloading component for removing and assembling the top set on the bottom mold (26), and the upper end of the output shaft of the first rotating motor (22) is provided with A rotating plate (23) is provided with a plurality of clamping plates 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); a clamping groove (251) matching the clamping plate is provided at the bottom of one end of the extension block (25); a pair of tangent grooves (241) are provided on the outer circumference of the collecting ring (24); the axial direction of the tangent grooves (241) is parallel to the circumferential tangent direction of the collecting ring (24); a plurality of positioning grooves (242) are provided on the bottom end surface of the collecting ring (24) in a circumferential array; and the assembly package includes: A fourth linear mechanism (27) is vertically arranged, and a fifth linear mechanism (28) is horizontally arranged at the upper end of the output shaft of the fourth linear mechanism (27). An air clamp (29) is arranged at one end of the output shaft of the fifth linear mechanism (28). A hemispherical groove (269) is arranged at the upper end of the receiving portion (268). A plurality of mounting rods (253) are arranged on the mounting seat (252). A plurality of sleeves (261) are arranged on the outer peripheral side of the bottom mold (26). A plurality of sleeve holes (262) are arranged on the sleeves (261) and are matched with the mounting rods (253). The batch transfer unit (3) is arranged on one side of the collection unit (2) and is used to transfer the collection ring (24). 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 circumference of the collection ring (24), an eighth linear mechanism (34) is provided below one side of the sixth linear mechanism (31), and the output direction of the sixth linear mechanism (31) is provided with a vertical plate (321). The sliding end of the eighth linear mechanism (34) is parallel to the sliding direction of the eighth linear mechanism (34); 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 transverse 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); a clamping plate (39) matching the transverse portion of the L-shaped plate (37) is provided on one end of the output shaft of the tenth linear mechanism (38); A distribution unit (4) is arranged 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 distribution unit (4) comprising a first conveyor belt conveyor (41) arranged below the sixth linear mechanism (31) and arranged parallel to the first linear mechanism (31), and a plurality of second conveyor belt conveyors (42) are arranged on one side of the first conveyor belt conveyor (41) and are located at the same height as the first conveyor belt conveyor and are arranged perpendicular to the first conveyor belt conveyor (41); The tablet pressing unit (5) is arranged at one end of the dispensing unit (4), and comprises a plurality of ring transfer mechanisms for receiving the collecting ring (24) and a plurality of hydraulic presses. A pressing plate (57) is arranged 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 arranged at the lower end of the pressing plate (57). A pressing platform (58) is arranged below the pressing plate (57). The pressing platform (58) is arranged at the conveying end of the second conveyor belt conveyor (42). A plurality of positioning blocks (242) are respectively matched with the positioning grooves (242) are arranged on the upper end surface of the pressing platform (58). 582), the number of the ring shifting mechanisms is the same as that of the second conveyor belt conveyor (42), the ring shifting mechanism comprises an eleventh linear mechanism (51), one end of the output shaft 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, a pair of round rods (55) respectively matched with the tangent groove (241) are provided at one end of the output shaft of the thirteenth linear mechanism (54), and a spherical portion matched with the hemispherical groove (269) is formed at the lower end of the pressure roller (572).

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 (12). 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 slider from top to bottom. 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 (1) 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).

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