Powder column forming device

Abstract

The application discloses a powder column forming device, a lower cam track and a centering assembly are installed on a work platform, a rotating body rotates around the centering assembly, upper arch rods are slidably installed on the upper end of the rotating body, lower arch rods are slidably installed on the lower end of the rotating body, a powder cup is placed on the middle part of the rotating body, and a material dropping mechanism for dropping material into the powder cup is installed on the middle part of the rotating body, the upper arch rods move up and down under the action of the upper cam track, the lower arch rods move up and down under the action of the lower cam track, and a rubbing mechanism corresponding to the lower arch rods is also radially installed on the bottom of the rotating body. The application has the beneficial effects that: through the downward movement of the upper arch rods and the upward movement of the lower arch rods, the powder column is compacted and formed, and in the compacting process of the powder column, the inner arch rods can rotate under the action of the rubbing arch rods, so that the adhesion of the inner arch rods to the powder is avoided through the rotation of the inner arch rods, and then the inner arch rods are prevented from taking out the powder, and the powder column forming quality is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the forming of a powder column, in particular a powder column forming device. BACKGROUND

[0002] With the development of new energy technology, as the energy storage of electric energy, the energy storage technology of battery has developed rapidly, and with the increasing demand for batteries in the market, the production efficiency of batteries is higher, and in the production process of the battery, the compaction of the powder is particularly important, in the forming process of the powder column, the lower arch rod occasionally brings out the powder after the lower arch rod exits the powder cup, so as to cause the yield of the powder column forming to be unqualified, through the long-term research of the inventor, it is found that in the process of compaction and forming of the powder column, the lower arch rod and the powder will stick together, so that the lower arch rod will bring out the powder when the lower arch rod exits the powder cup, in view of this technical problem, the inventor proposes a powder column forming device. SUMMARY

[0003] The purpose of the present application is to overcome the shortcomings of the prior art and provide a powder column forming device.

[0004] The purpose of the present application is achieved by the following technical scheme: a powder column forming device, comprising a working platform, a rotating body, a fixedly installed upper cam seat and a driving device for driving the rotating body to rotate, the upper cam seat is provided with an upper cam track, the working platform is provided with a lower cam track and a centering assembly, the rotating body rotates around the centering assembly, and the upper end of the rotating body is slidably provided with a plurality of upper arch rods, the lower end of the rotating body is slidably provided with a lower arch rod, the middle part of the rotating body is provided with a powder cup, and the middle part of the rotating body is provided with a material dropping mechanism for dropping material into the powder cup, the upper arch rod moves up and down under the action of the upper cam track, the lower arch rod moves up and down under the action of the lower cam track, and the bottom of the rotating body is further provided with a rubbing mechanism corresponding to the lower arch rod;

[0005] The lower arch rod comprises an outer arch sleeve and an inner arch rod, the outer arch sleeve is sleeved on the inner arch rod, the bottom of the outer arch sleeve has a protruding abutting portion, the radially outer side of the abutting portion is provided with a third bearing, the bottom of the inner arch rod penetrates through the bottom of the outer arch sleeve, the bottom of the inner arch rod is installed on a spring mounting seat, the inner arch rod can rotate circumferentially relative to the spring mounting seat, a pressing spring is sleeved on the spring mounting seat, the other end of the pressing spring is installed on the abutting portion of the outer arch sleeve, and a gap is formed between the outer arch sleeve and the spring mounting seat, the bottom of the spring mounting seat is connected with a bearing mounting seat, the bottom of the bearing mounting seat is provided with a second bearing, and the radially outer side of the bearing mounting seat is provided with a first bearing;

[0006] The rubbing mechanism comprises a rubbing arch rod and a rubbing support, a lower end of the rotating body is provided with a rubbing arch rod mounting hole in a radial direction, the rubbing arch rod has an inner end and an outer end, the inner end is sleeved in the rubbing arch rod mounting hole, and the outer end is located outside the rubbing arch rod mounting hole, the rubbing arch rod is provided with an axially extending straight rack, the outer circumference of the inner arch rod is provided with axially extending teeth, the outer arch sleeve is provided with a gap for exposing the teeth, and the straight rack is engaged with the corresponding teeth, the outer end of the rubbing arch rod is provided with a rotatable fifth bearing, the rubbing support is mounted on the working platform and located outside the rotating body, the top of the rubbing support is provided with an arc-shaped groove concentric with the rotating body, and the fifth bearing can enter the arc-shaped groove and roll along the groove wall of the arc-shaped groove, the arc-shaped groove is provided with an inner concave arc groove recessed towards the center, when the inner arch rod moves upwards under the action of the lower cam track, the fifth bearing rolls in the inner concave arc groove, and when the inner arch rod moves to the upper stroke, the upper arch rod moves to the lower stroke, at this time, the top of the inner arch rod and the bottom of the upper arch rod are located in the powder cup.

[0007] Optionally, the rubbing arch rod mounting hole is further provided with a first reset spring, one end of the first reset spring abuts against the hole bottom of the rubbing arch rod mounting hole, the other end of the first reset spring abuts against the inner end of the rubbing arch rod, the outer side wall of the bottom of the rotating body is further provided with a limiting piece mounting groove corresponding to the rubbing arch rod mounting hole, the limiting piece mounting groove is provided with a limiting piece, and the side of the rubbing arch rod close to the limiting piece is provided with a first limiting groove, and the end of the limiting piece is fitted and mounted in the first limiting groove.

[0008] Optionally, the centering assembly comprises a supporting cylinder, a centering shaft, an upper bearing seat and a lower bearing seat, the supporting cylinder is fixed on the working platform, the upper bearing seat is mounted on the top cover at the top of the supporting cylinder, the lower bearing seat is mounted at the bottom of the top cover and located in the inner cavity of the supporting cylinder, the second thrust bearing is mounted in the upper bearing seat, the lower ball bearing is mounted in the lower bearing seat, the bottom of the centering shaft passes through the second thrust bearing and is sleeved in the lower ball bearing, the top of the centering shaft is mounted on the top mounting plate through the upper ball bearing, the top mounting plate is supported by the column mounted on the working platform and located outside the rotating body, and the upper cam seat is mounted at the bottom of the top mounting plate.

[0009] Optionally, the lower cam track comprises an arc-shaped track, a lower arch rod lifting support and a lower arch rod pressing block, the two ends of the lower arch rod lifting support are connected with the arc-shaped track respectively, the top of the lower arch rod lifting support and the top of the arc-shaped track form a track for the rolling of the second bearing, the lower arch rod pressing block is mounted on the working platform and located inside the lower arch rod lifting support, the outer side of the lower arch rod pressing block is provided with a groove for limiting the rolling of the first bearing, and the working platform is further provided with a third bearing track support, the third bearing track support is provided with a third bearing track groove, and the third bearing can roll along the third bearing track.

[0010] Optionally, the third bearing track groove comprises a wedge-shaped inlet, a first smooth groove, a downhill groove, a second smooth groove and a wedge-shaped outlet connected in sequence, when the third bearing rolls on the wedge-shaped inlet, the outer bow sleeve goes up, when the third bearing rolls in the first smooth groove, the outer bow sleeve stops going up and supports the bottom of the powder cup, when the third bearing rolls on the downhill groove, the top of the outer bow sleeve is separated from the bottom of the powder cup and goes down, when the third bearing rolls in the second smooth groove, the outer bow sleeve is completely separated from the powder cup and is fixed relative to the position of the powder cup, when the third bearing rolls on the wedge-shaped outlet, the position of the outer bow sleeve gradually resets;

[0011] Optionally, the lower bow rod lifting support comprises a climbing section, a first straight section, a first downhill section, a second straight section, a second downhill section, a third straight section, a third downhill section, a fourth straight section and a fourth downhill section connected in sequence, the entrance end of the wedge-shaped inlet is located in front of the second bearing entering the climbing section, the exit end of the wedge-shaped inlet is located at the top front end of the climbing section, the first straight section and the first downhill section are located below the first smooth groove, the starting end of the downhill groove is located above the second straight section, and the end of the downhill groove is located above the second downhill section, the third straight section and the third downhill section are located below the second smooth groove, the wedge-shaped outlet is located above the fourth straight section, the fourth downhill section is connected with the uphill slope of the arc-shaped track, and the top of the uphill slope is flush with the top of the arc-shaped track;

[0012] Optionally, the top of the groove body comprises a first wedge-shaped pressing opening, a first straight pressing section, a second wedge-shaped pressing opening and a second straight pressing section connected in sequence, the first wedge-shaped pressing opening is located above the climbing section, and the bottom of the first wedge-shaped pressing opening is located in front of the top of the climbing section, the first straight pressing section and the second wedge-shaped pressing opening are located below the first smooth groove, the first downhill section is located below the first straight pressing section, the second wedge-shaped pressing opening is located above the second straight section, the downhill groove is located above the second straight pressing section, and the second downhill section is located below the second straight pressing section.

[0013] Optionally, the inner cavity of the spring mounting seat is a stepped through hole, the bottom of the inner cavity of the spring mounting seat is blocked by the bearing mounting seat, the bottom of the inner bow rod is provided with a protruding ring, the first thrust bearing is sleeved on the inner bow rod on both sides of the protruding ring, the first thrust bearing is clamped in the large hole of the stepped through hole, the fourth bearing is installed in the small hole of the stepped through hole, the fourth bearing is sleeved on the inner bow rod, a guide groove is axially formed on one end of the spring mounting seat close to the outer bow sleeve, a guide key is installed on the outer bow sleeve, and the guide key is inserted into the guide groove in a matched manner.

[0014] Optionally, a sliding ring is sleeved on the outer bow sleeve, a pressing spring is installed on the outer bow sleeve, one end of the pressing spring is installed on the abutting portion of the outer bow sleeve, and the other end of the pressing spring is installed on the sliding ring.

[0015] Optionally, the rotating body includes a rotating cylinder, a powder tray, a turntable connecting seat, and an upper bow rod guide seat connected in sequence from bottom to top. The centering shaft of the centering assembly passes through the rotating cylinder, the powder tray, the turntable connecting seat, and the upper bow rod guide seat in sequence from bottom to top. At least one center hole of the powder tray, the center hole of the turntable connecting seat, and the center hole of the upper bow rod guide seat are fixedly fitted with the centering shaft. The lower bow rod and the rubbing bow rod are mounted on the rotating cylinder. The upper bow rod is slidably mounted on the upper bow rod guide seat. The bottom and top of the upper bow rod both pass through the upper bow rod guide seat. A sixth bearing is mounted on the top of the upper bow rod. The sixth bearing rolls along the upper cam track.

[0016] Optionally, an annular powder accumulation groove is provided on the outer edge of the powder tray. A powder discharge mold is installed at the bottom of the powder accumulation groove. A discharge hole is vertically opened on the powder discharge mold. A powder cup bearing ring is also installed at the bottom of the powder tray through a support ring. A number of powder cup placement holes are opened on the powder cup bearing ring. A powder cup fixing mold is also installed on the outer side wall of the support ring. An arc-shaped groove for supporting the powder cup is opened on the powder cup fixing mold.

[0017] Optionally, the rotating cylinder is also equipped with a powder cup ejection mechanism that radially ejects the powder cup, and the centering assembly is equipped with a track groove for ejecting the powder cup ejection mechanism. When the inner bow rod exits the inner cavity of the powder cup, the seventh bearing of the powder cup ejection mechanism rolls in the track groove.

[0018] Optionally, several guide sleeves are installed on the radial outer side of the rotating cylinder, and radial through holes corresponding to the guide sleeves are opened on the rotating cylinder. A horizontal ejector rod is slidably installed inside the guide sleeve. The head of the horizontal ejector rod passes through the radial through hole, and a powder cup fixing mold is installed at the head of the horizontal ejector rod. A seventh bearing is provided at the tail of the horizontal ejector rod. A fixed track groove is provided on the centering assembly. During the circumferential rotation of the rotating cylinder, the seventh bearing enters the track groove, and the track groove pushes the horizontal ejector rod out in the radial direction.

[0019] Optionally, a radially extending fixing frame is installed on the top cover of the centering assembly, and an arc-shaped block is installed on the fixing frame. A triangular track groove is opened on the top surface of the arc-shaped block, the included angle of the track groove points to the axis of the centering shaft, and the apex of the track groove is far away from the axis of the centering shaft.

[0020] The present invention has the following advantages: The powder column forming device of the present invention achieves the compaction and forming of powder columns through the downward movement of the upper bow rod and the upward movement of the lower bow rod. Moreover, during the compaction process of the powder column, the inner bow rod can rotate under the action of the rubbing bow rod, thereby avoiding the adhesion between the inner bow rod and the powder material, thus preventing the inner bow rod from carrying out the powder material and ensuring the quality of powder column forming. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 A schematic diagram of the structure in which the second bearing rolls on the first straight segment;

[0023] Figure 3 This is a schematic diagram showing the relative positions of the lower bow rod pressure block, the lower bow rod lifting bracket, and the third bearing track bracket;

[0024] Figure 4 A schematic diagram showing the connection between the lower bow lifting support and the arc track;

[0025] Figure 5 This is a schematic diagram of the lower pressure block of the lower bow rod;

[0026] Figure 6 This is a schematic diagram of the lower bow rod.

[0027] Figure 7 This is a cross-sectional view of the lower bow rod;

[0028] Figure 8 This is a schematic diagram showing the installation of the lower bow rod, the rubbing bow rod, and the rotating cylinder;

[0029] Figure 9 A schematic diagram showing the engagement of the lower bow rod and the rubbing bow rod;

[0030] Figure 10 for Figure 8 Enlarged view of point A in the middle;

[0031] Figure 11 This is a schematic diagram showing the installation of the rubbing bow rod and the rotating cylinder;

[0032] Figure 12 This is a schematic diagram of the structure where the fifth bearing enters the arc-shaped groove.

[0033] Figure 13 This is a schematic diagram of the structure of the rubbing support;

[0034] Figure 14 This is a schematic diagram of the centering component.

[0035] Figure 15 This is a cross-sectional view of the centering component;

[0036] Figure 16 This is a schematic diagram of the installation of the lower bow rod inside the rotating cylinder;

[0037] Figure 17 This is a schematic diagram of the rotating body.

[0038] Figure 18 A schematic diagram of a structure for driving a rotating body to rotate using a drive device;

[0039] Figure 19This is a schematic diagram of the structure of the powder accumulation tank;

[0040] Figure 20 A schematic diagram of the structure of the powder cup fixing mold;

[0041] Figure 21 for Figure 16 Enlarged view of point B in the middle;

[0042] In the diagram, 1-Working platform, 10-Lower cam track, 20-Lower bow rod, 30-Rolling bow rod, 40-Rolling support, 11-Arc track, 12-Lower bow rod pressing block, 13-Third bearing track support, 14-Third bearing track groove, 15-Lower bow rod lifting support, 21-Climbing section, 22-First straight section, 23-First downhill section, 24-Second straight section, 25-Second downhill section, 26-Third straight section, 27-Third downhill section, 28-Fourth straight section, 29-Fourth downhill section, 30-Uphill slope, 51-Wedge-shaped inlet, 52-First smooth groove, 53-Downhill groove, 54-Second smooth groove, 55-Wedge-shaped outlet, 61-Groove body, 62-First wedge-shaped pressing port, 63-First straight pressing section, 64-Second wedge-shaped pressing section 65-Second straight downward pressing section, 41-Mounting bracket, 42-Arc groove, 43-Concave arc groove, 44-Rail frame, 45-Flange, 31-Rod body, 32-Straight rack, 33-Fifth bearing, 34-First return spring, 35-First limiting groove, 36-Limiting piece, 37-Limiting piece mounting groove, 38-Rolling bow rod mounting hole, 39-Lower bow rod mounting hole, 205-Outer bow sleeve, 206-Inner bow rod, 207-Top pressure spring, 208-Guide key, 209-Guide groove, 210-Spring mounting seat, 211-Bearing mounting seat, 212-First bearing, 213-Second bearing, 214-First thrust bearing, 215-Fourth bearing, 2 16-Third bearing, 217-Notch, 218-Tooth, 224-Sliding ring, 225-Compression spring, 340-Centering assembly, 341-Support cylinder, 342-Centering shaft, 343-Upper bearing housing, 344-Top cover, 345-Fixed bracket, 346-Railway groove, 347-Arc block, 348-Mounting cylinder, 349-Thrust bearing, 350-Lower bearing housing, 351-Lower rolling bearing, 352-Snap ring, 353-Locking nut, 354-Inspection hole, 355-Rib plate, 361-Powder tray, 362-Radial perforation, 363-Rotating cylinder, 370-Horizontal push-out bow, 371-Guide sleeve, 372-First return spring, 3 73-Seventh bearing, 374-Snap ring, 375-Linear bearing, 376-Extended rod, 377-Limit screw, 378-Second limit groove, 379-Powder cup fixing mold, 380-Top rod, 381-Internal gear ring, 382-Drive gear, 383-Gear shaft, 384-Turntable connecting seat, 385-Upper bow rod guide seat, 386-Top mounting plate, 387-Top bearing seat, 388-Upper ball bearing, 389-Column, 390-Upper cam seat, 391-Upper cam track, 392-Powder material discharge mold, 393-Powder material accumulation groove, 394-Support ring, 395-Powder cup placement hole, 396-Powder cup bearing ring, 397-Upper bow rod. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0045] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other.

[0046] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0047] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0048] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0049] like Figure 1As shown, the powder column forming device includes a working platform 1, a rotating body, a fixedly installed upper cam seat 390, and a drive device for driving the rotating body to rotate. An upper cam track 391 is provided on the upper cam seat 390. A lower cam track 10 and a centering assembly are installed on the working platform 1. The rotating body rotates around the centering assembly. Several upper bow rods 397 are slidably installed on the upper end of the rotating body, and lower bow rods 20 are slidably installed on the lower end of the rotating body. A powder cup is placed in the middle of the rotating body, and a material feeding mechanism for feeding material into the powder cup is installed in the middle of the rotating body. The upper bow rods 397 are located on the upper cam track 391. The upper bow rod 397 and the lower bow rod 20 move up and down under the action of the lower cam track 10. The bottom of the rotating body is also radially equipped with a rubbing mechanism corresponding to the lower bow rod 20. The rotating body makes a circular rotation. When the rotating body rotates, it drives the upper bow rod 397 and the lower bow rod 20 to rotate. The upper bow rod 397 moves up and down under the action of the upper cam track 391, while the lower bow rod 20 moves up and down under the action of the lower cam track 10. The powder in the powder cup is compacted during the upward movement of the upper bow rod 397 and the downward movement of the lower bow rod 20, thus forming a powder column in the powder cup.

[0050] In this embodiment, as Figure 1 , Figure 17 and Figure 18 As shown, the rotating body includes a rotating cylinder 363, a powder tray 361, a turntable connecting seat 384, and an upper bow rod guide seat 385 connected sequentially from bottom to top. The centering shaft 342 of the centering assembly passes through the rotating cylinder 363, the powder tray 361, the turntable connecting seat 384, and the upper bow rod guide seat 385 sequentially from bottom to top. At least one central hole of the powder tray 361, the central hole of the turntable connecting seat 384, and the central hole of the upper bow rod guide seat 385 are fixedly fitted with the centering shaft 342. The lower bow rod 20 and the rubbing bow rod 30 are mounted on the rotating cylinder 363. The upper bow rod 397 is slidably mounted on the upper bow rod guide seat 385. The bottom and top of the upper bow rod 397 both pass through the upper bow rod guide seat 385. A sixth bearing is mounted on the top of the upper bow rod 397. The sixth bearing rolls along the upper cam track 391, and the second bearing rolls along the upper cam track 391, thereby causing the upper bow rod 397 to move up and down.

[0051] In this embodiment, as Figure 19 As shown, the material feeding mechanism includes a powder accumulation trough 393, which is installed on the outer edge of the powder tray 361. A powder feeding mold 392 is installed at the bottom of the powder accumulation trough 393, and a feeding hole is vertically opened on the powder feeding mold 392. Figure 20As shown, a powder cup bearing ring 396 is also installed at the bottom of the powder tray 361 via a support ring 394. The powder cup bearing ring 396 has several powder cup placement holes 395 for placing powder cups. A powder cup fixing mold 379 is also installed on the outer wall of the support ring 394. The powder cup fixing mold 379 has an arc-shaped groove for supporting the powder cup. Powder is accumulated in the powder accumulation groove 393. In this embodiment, the powder will enter the discharge hole of the powder discharge mold 392 through the discharge hole, and then fall into the central hole of the powder cup.

[0052] In this embodiment, as Figure 14 and Figure 15 As shown, the centering assembly 340 includes a support cylinder 341, a centering shaft 342, an upper bearing seat 343, and a lower bearing seat 350. The support cylinder 341 is fixed on the working platform 1. The upper bearing seat 343 is installed on the top cover 344 of the support cylinder 341. The lower bearing seat 350 is installed at the bottom of the top cover 344 and is located inside the inner cavity of the support cylinder 341. A second thrust bearing 349 is installed in the upper bearing seat 343, and a lower ball bearing 351 is installed in the lower bearing seat 350. The bottom of the centering shaft 342 passes through the second thrust bearing 349, and the bottom of the centering shaft 342 is fitted inside the lower ball bearing 351. Further, as... Figure 15 As shown, the bottom of the centering shaft 342 passes through the lower ball bearing 351, and a retaining ring 352 is installed on the centering shaft 342 passing through the lower ball bearing 351. The retaining ring 352 prevents axial movement of the centering shaft 342. Furthermore, as... Figure 15 As shown, a locking nut 353 is installed on the centering shaft 342 passing through the lower ball bearing 351. The snap ring 352 is pressed between the inner ring of the lower ball bearing 351 and the locking nut 353, thereby ensuring the reliability of the snap ring 352 and preventing axial movement of the centering shaft 342. Since the snap ring 352 and the locking nut 353 are located inside the cavity of the support cylinder 341, an inspection hole 354 is provided on the cylinder wall of the support cylinder 341 to facilitate the disassembly of the snap ring 352 and the locking nut 353. Disassembly and assembly tools can enter the cavity of the support cylinder 341 through the inspection hole 354, thereby facilitating the disassembly and assembly of the snap ring 352 and the locking nut 353.

[0053] In this embodiment, as Figure 16As shown, a support sleeve is provided at the lower edge of the center hole of the powder tray 361. The support sleeve is fitted onto the centering shaft 342, and the support sleeve and the centering shaft 342 are locked together by a locking screw installed on the support sleeve. Since the bottom of the centering shaft 342 is equipped with a second thrust bearing 349 and multiple lower ball bearings 351, the coaxiality of the rotation of the centering shaft 342 can be ensured, thereby ensuring the coaxiality of the rotating cylinder 363. In this embodiment, to further improve the coaxiality of the rotation of the centering shaft 342, the top of the centering shaft 342 is mounted on the top mounting plate 386 by an upper ball bearing 388. The top mounting plate 386 is equipped with a top bearing seat 387, and an upper ball bearing 388 is installed inside the top bearing seat 387. The top of the centering shaft 342 is installed inside the upper ball bearing 388. The top mounting plate is supported by multiple columns 389 installed on the working platform 1. The columns 389 are located outside the rotating cylinder 363. Furthermore, the support sleeve extends towards the second thrust bearing 349 and abuts against the upper surface of the second thrust bearing 349. Thus, the second thrust bearing 349 can share part of the weight of the rotating cylinder 363, thereby improving the locking performance between the support sleeve and the centering shaft 342.

[0054] In this embodiment, as Figure 6 and Figure 7 As shown, the lower bow rod 20 includes an outer bow sleeve 205 and an inner bow rod 206. The outer bow sleeve 205 is fitted onto the inner bow rod 206, and the outer bow sleeve 205 can slide axially relative to the inner bow rod 206. In this embodiment, when the powder cup is installed, the top of the inner bow rod 206 is located at the bottom of the inner cavity of the powder cup, thus preventing the powder from falling out of the powder cup after it is installed. The bottom of the outer bow sleeve 205 has a protruding abutment portion, and a third bearing 216 is installed on the radially outer side of the abutment portion. Therefore, by applying external force to the third bearing 216, the axial displacement of the outer bow sleeve 205 can be achieved. The bottom of the inner bow rod 206 passes through the bottom of the outer bow sleeve 205, and the bottom of the inner bow rod 206 is installed on the spring mounting seat 210. The inner bow rod 206 can rotate circumferentially relative to the spring mounting seat 210, that is, the inner bow rod 206 can rotate circumferentially relative to the outer bow sleeve 205. Figure 6 and Figure 7As shown, a top-compression spring 207 is fitted onto the spring mounting base 210. The other end of the top-compression spring 207 is mounted on the abutment portion of the outer bow sleeve 205, and there is a gap between the outer bow sleeve 205 and the spring mounting base 210. A bearing mounting base 211 is connected to the bottom of the spring mounting base 210. A second bearing 213 is mounted on the bottom of the bearing mounting base 211, and a first bearing 212 is mounted on the radially outer side of the bearing mounting base 211. That is, applying an external force to the first bearing 212 or the second bearing 213 can achieve axial movement of the inner bow rod 206. After the inner bow rod 206 moves axially, the top-compression spring 207 will deform, thereby transmitting the axial external force to the inner bow rod 206. If the travel of the outer bow sleeve 205 is not restricted, the outer bow sleeve 205 will be axially displaced under the action of the axial external force. Similarly, while the outer bow sleeve 205 moves, the axial external force will also be transmitted to the inner bow rod 206 through the top compression spring 207. If the inner bow rod 206 is not restricted, it will also move axially. Therefore, the outer bow sleeve 205 and the inner bow rod 206 can move synchronously by means of the first bearing 212, the second bearing 213 and the third bearing 216. Alternatively, the relative movement of the outer bow sleeve 205 and the inner bow rod 206 can be achieved by restricting the first bearing 212, the second bearing 213 and the third bearing 216.

[0055] In this embodiment, as Figure 3 and Figure 4 As shown, the lower cam track 10 includes an arc-shaped track 11, a lower bow rod lifting bracket 15, and a lower bow rod pressing block 12. Both ends of the lower bow rod lifting bracket 15 are connected to the arc-shaped track 11, forming a circular track. The top of the lower bow rod lifting bracket 15 and the top of the arc-shaped track 11 form the track for the second bearing 213 to roll. The lower bow rod lifting bracket 15 and the arc-shaped track 11 restrict the movement trajectory of the second bearing 213. The lower bow rod pressing block 12 is mounted on the working platform 1 and is located inside the lower bow rod lifting bracket 15. Figure 5 As shown, a groove 61 is provided on the outer side of the lower bow rod pressure block 12 to restrict the rolling of the first bearing 212. The groove 61 restricts the movement trajectory of the first bearing 212. Figure 3 As shown, a third bearing track bracket 13 is also installed on the working platform 1. A third bearing track groove 14 is provided on the third bearing track bracket 13. The third bearing 216 rolls along the third bearing track 14, which restricts the movement trajectory of the third bearing 216. The outer bow sleeve 205, under the action of the third bearing 216, supports the bottom of the powder cup. Simultaneously, while the outer bow sleeve 205 supports the bottom of the powder cup, the top of the inner bow rod 206 moves in and out of the inner cavity of the powder cup through the rolling motion of the first bearing 212 and the second bearing 213. Specifically, as shown... Figure 2 andFigure 3 As shown, the third bearing track groove 14 includes a wedge-shaped inlet 51, a first smooth groove 52, a downward slope groove 53, a second smooth groove 54, and a wedge-shaped outlet 55 connected in sequence. When the third bearing 216 rolls on the wedge-shaped inlet 51, the outer bow sleeve 205 moves upward. When the third bearing 216 rolls in the first smooth groove 52, the outer bow sleeve 205 stops moving upward and supports the bottom of the powder cup. When the third bearing 216 rolls on the downward slope groove 53, the top of the outer bow sleeve 205 disengages from the bottom of the powder cup and moves downward. The third bearing 216 moves in the second smooth groove 54. During rolling, the outer bow sleeve 205 completely detaches from the powder cup and is fixed in position relative to the powder cup. As the third bearing 216 rolls on the wedge-shaped outlet 55, the position of the outer bow sleeve 205 gradually returns to its original position. That is, when the third bearing 216 enters the wedge-shaped inlet 51, it rolls along the wedge-shaped inlet 51, causing the outer bow sleeve 205 to gradually rise. When the third bearing 216 enters the first smooth groove 52, the outer bow sleeve 205 stops axial movement, and its top supports the powder cup. Figure 2 and Figure 4 As shown, the lower bow lifting support 15 includes a climbing section 21, a first straight section 22, a first downhill section 23, a second straight section 24, a second downhill section 25, a third straight section 26, a third downhill section 27, and a fourth straight section 28 connected in sequence. The inlet end of the wedge-shaped inlet 51 is located in front of the second bearing 213 entering the climbing section 21, and the outlet end of the wedge-shaped inlet 51 is located at the top front end of the climbing section 21. The first straight section 22 and the first downhill section 23 are located below the first smooth groove 52. The starting end of the downhill groove 53 is located above the second straight section 24, and the end of the downhill groove 53 is located above the second downhill section 25. The third straight section 26 and the third downhill section 27 are located below the second smooth groove 54. The wedge-shaped outlet 55 is located above the fourth straight section 28, and the top of the fourth straight section 28 is flush with the top of the arc-shaped track 11. Figure 2 and Figure 5 As shown, the top of the trough 61 includes a first wedge-shaped pressing port 62, a first straight pressing section 63, a second wedge-shaped pressing port 64, and a second straight pressing section 65 connected in sequence. The first wedge-shaped pressing port 62 is located above the climbing section 21, and the bottom of the first wedge-shaped pressing port 62 is located in front of the top of the climbing section 21. The first straight pressing section 63 and the second wedge-shaped pressing port 64 are located below the first smooth groove 52. The first downslope section 23 is located below the first straight pressing section 63. The second wedge-shaped pressing port 64 is located above the second straight section 24. The downslope groove 53 is located above the second straight pressing section 65, and the second downslope section 25 is located below the second straight pressing section 65. During the powder forming process, as... Figure 2As shown, the second bearing 213 first rolls along the arc-shaped track 11. When the third bearing 216 enters the wedge-shaped inlet 51, the third bearing 216 rolls along the wedge-shaped inlet 51, causing the outer bow sleeve 205 to gradually move upward and approach the powder cup. At this time, the inner bow rod 206 also moves upward under the action of the top pressure spring 207, but the upward displacement of the inner bow rod 206 is less than the upward displacement of the outer bow sleeve 205. That is to say, the inner bow rod 206 is moving downward relative to the outer bow sleeve 205. When the second bearing 213 contacts the climbing section 21, the second bearing 213 rolls along the climbing section 21, while the first bearing enters below the first wedge-shaped lower pressure port 62. As the second bearing 213 rolls along the climbing section 21, the inner bow rod 206... In the sixth upward movement, preferably, the slope of the climbing section 21 is greater than the slope of the wedge-shaped inlet 51. That is, the upward speed of the inner bow rod 206 is greater than the upward speed of the outer bow sleeve 205. When the third bearing 216 enters the first smooth groove 52, the outer bow sleeve 205 presses against the bottom of the powder cup, thus supporting the powder cup. At this time, the second bearing 213 is still rolling on the climbing section 21. As the inner bow rod 206 moves upward, it gradually pushes the powder in the powder cup upward. In this embodiment, while the inner bow rod 206 is pushing the powder upward, the upper bow rod 397 of the powder mill presses the powder downward from above the powder cup, thereby compacting the powder. At this time, the top pressure spring 207 is in a compressed state. When the second bearing 213 enters the first smooth groove 52, the outer bow sleeve 205 presses against the bottom of the powder cup, thus supporting the powder cup. When the upper bow rod 397 moves to the lower stroke in the straight line segment 22, the powder is compacted. At this time, the first bearing 212 enters the first straight downward pressing section 63 through the first wedge-shaped pressing port 62. When the second bearing 213 enters the first downward slope section 23, the first downward slope section 23 provides downward space for the lower bow rod 20. Therefore, the lower bow rod 20 moves downward under the action of the top pressure spring 207, causing the lower bow rod 20 to detach from the powder and move away from the powder. With the release of the elastic force of the top pressure spring 207 and the rotation of the inner bow rod 206, when the second bearing 213 detaches from the first downward slope section 23, the second bearing 213 and the first bearing 212 are in a suspended state. That is to say, the lower bow rod 20 continues to rotate, and when the first bearing... When bearing 212 contacts the second wedge-shaped pressing port 64, the second wedge-shaped pressing port 64 applies an axial downward force to the first bearing 212, causing the lower bow rod 20 to continue moving downward. At this time, the powder cup does not move axially, causing the lower bow rod 20 to exit the powder cup. The powder cup can then be ejected by the powder cup ejection mechanism on the powder mill. After the powder cup is ejected, the third bearing 216 enters the lower slope groove 53, while the first bearing 212 enters the second straight pressing section 65. The outer bow sleeve 205 moves downward under the action of the lower slope groove 53, thus aligning with the powder cup. At this time, the top pressure spring 207 is in a compressed state during the downward movement of the outer bow sleeve 205. As the lower bow rod 20 continues to rotate, the third bearing 216 enters the second smooth groove 54.The second bearing 213 rolls on the second downhill section 25, the third straight section 26, and the third downhill section 27. The elastic restoring force of the top-compression spring 207 is released through the second downhill section 25 and the third downhill section 27. When the second bearing 213 enters the fourth straight section 28, the elastic restoring force of the top-compression spring 207 is fully released. At this point, the outer bow sleeve 205 and the inner bow rod 206 return to their original positions. As the lower bow rod 20 continues to rotate, the second bearing 213 enters the arc-shaped track 11 from the fourth straight section 28, while the third bearing 216 exits the third bearing track groove 14 from the wedge-shaped outlet 55.

[0056] During the powder compaction process, the inner arch rod 206 moves upward, gradually applying pressure to the powder, thereby increasing the adhesion between the inner arch rod and the powder. To prevent the powder from sticking to the top of the inner arch rod, such as... Figure 12 As shown, in this embodiment, a rubbing mechanism is also installed on the working platform 1. The rubbing mechanism includes a rubbing bow rod 30 and a rubbing bracket 40, as shown... Figure 8 As shown, a rubbing bow rod mounting hole 38 corresponding to the lower bow rod mounting hole 39 is radially formed on the outer circumference of the flange 45, and the rubbing bow rod mounting hole 38 intersects with the corresponding lower bow rod mounting hole 39. The rubbing bow rod 30 has an inner end and an outer end. The inner end is fitted into the rubbing bow rod mounting hole 38, and the outer end is located outside the rubbing bow rod mounting hole 38. Figure 9 As shown, the rubbing bow rod 30 is provided with an axially extending straight toothed rack 32, such as... Figure 6 and Figure 7 As shown, the inner bow rod 206 has axially extending teeth 218 on its outer circumference, and the outer bow sleeve 205 has a notch 217 to facilitate the exposure of the teeth 218. The straight rack 32 meshes with the corresponding teeth 218. Figure 9 As shown, a rotatable fifth bearing 33 is installed at the bottom of the outer end of the rubbing bow rod 30. In this embodiment, as... Figure 12 As shown, the rubbing bracket 40 is mounted on the working platform 1 and is located outside the rotating cylinder 363. The top of the rubbing bracket 40 has an arc-shaped groove 42 concentric with the rotating cylinder 363, and the fifth bearing 33 can enter the arc-shaped groove 42 and roll along its wall. The arc-shaped groove 42 has a concave arc groove 43 that curves inward towards the center. The concave arc groove 43 and the arc-shaped groove 42 form a smooth transition. In this embodiment, as shown... Figure 13As shown, the rubbing support 40 includes a mounting frame 41 and a track frame 44. The mounting frame 41 is mounted on the working platform 1, and the track frame 44 is mounted on the top of the mounting frame 41 by screws. The arc groove 42 and the concave arc groove 43 are both formed on the track frame 44. When the fifth bearing 33 enters the concave arc groove 43, the rubbing bow rod 30 moves radially inward with the rotation of the rotating cylinder 363, thereby driving the inner bow rod 206 to rotate, thus achieving relative rotation between the top of the inner bow rod 206 and the powder. When the fifth bearing 33 exits the concave arc groove 43, the rubbing bow rod 30 moves radially outward with the rotation of the rotating cylinder 363, which will drive the inner bow rod 206 to rotate in the opposite direction, also achieving relative rotation between the top of the inner bow rod 206 and the powder. Moreover, by setting the concavity of the concave arc groove 43 and the rotation speed of the rotating cylinder 363, the rotation speed of the inner bow rod 206 can be well controlled. Furthermore, since the concave arc groove 43 and the arc groove 42 are... A smooth transition is achieved, thus preventing the inner bow rod from rotating suddenly and rapidly, which could damage the powder structure. In this embodiment, as the second bearing 213 rolls from the tail of the arc track 11 towards the first straight section 22, the fifth bearing 33 rolls within the concave arc groove 43. When the second bearing 213 rolls out of the first straight section 22, the fifth bearing 33 rolls out of the concave arc groove 43. Therefore, the inner bow rod 206 rotates upwards, first rotating upwards in one direction. When the fifth bearing 33 rolls to the concave point of the concave arc groove 43, the inner bow rod 206 then moves upwards in the opposite direction. This ensures that the inner bow rod 206 is in a rotating state throughout the entire upward movement, preventing the powder from sticking to the inner bow rod 206 during compaction. When the second bearing 213 rolls out of the first straight section 22, the inner bow rod 206 immediately moves downwards, causing it to detach and ensuring the quality of the powder molding.

[0057] In this embodiment, as Figure 11 As shown, a first return spring 34 is also installed inside the mounting hole 38 of the rubbing bow rod. One end of the first return spring 34 abuts against the bottom of the mounting hole 38, and the other end abuts against the inner end of the rubbing bow rod 30. When the rubbing bow rod 30 moves radially inward, the outer wall of the concave arc groove 43 applies an external force to the rod body 31. At this time, the first return spring 34 is compressed. The first return spring 34 can be designed to have a certain amount of compression, thus... It has the tendency to prevent the rubbing bow rod 30 from moving radially inward, thereby preventing the rubbing bow rod 30 from rotating suddenly and rapidly. When the rubbing bow rod 30 moves radially outward, the first return spring 34 will apply a radially outward force to the rubbing bow rod 30, thereby causing the fifth bearing 33 to contact the outer wall of the concave arc groove 43 again. Therefore, the inner walls of the concave arc groove 43 and the arc groove 42 will not be used, thus reducing the matching difficulty between the concave arc groove 43, the arc groove 42 and the fifth bearing 33.

[0058] In this embodiment, as Figure 10 As shown, a limiting plate mounting groove 37 corresponding to the rubbing bow rod mounting hole 38 is also provided on the outer wall of the flange 45 of the rotating cylinder 363. A limiting plate 36 is installed in the limiting plate mounting groove 37. A first limiting groove 35 is provided on the side of the rubbing bow rod 30 near the limiting plate 36. The end of the limiting plate 36 is fitted into the first limiting groove 35. When the fifth bearing 33 disengages from the outer groove wall of the concave arc groove 43, the limiting plate 36 is just stuck at the tail of the first limiting groove 35, thereby ensuring the fixation of the farthest end of the outer end of the rubbing bow rod 30. This ensures that the fifth bearing 33 can smoothly enter the arc groove 42. Moreover, due to the cooperation between the limiting plate 36 and the first limiting groove 35, the rotation of the rubbing bow rod 30 can be prevented, thereby ensuring the reliability of the meshing between the spur rack 32 and the tooth 218.

[0059] In this embodiment, as Figure 6 and Figure 7 As shown, a sliding ring 224 is fitted onto the outer bow sleeve 205, and a compression spring 225 is installed on the outer bow sleeve 205. One end of the compression spring 225 is installed on the abutment part of the outer bow sleeve 205, and the other end of the compression spring 225 is installed on the sliding ring 224. In this embodiment, the compression spring 225 is always in a compressed state. Part of the elastic restoring force of the compression spring 225 is pressed against the lower surface of the flange 45 through the sliding ring 224. When the second bearing 213 slides on the arc track 11, the other part of the elastic restoring force of the compression spring 225 is acted on the second bearing 213 through the top compression spring 207, so that the second bearing 213 is always in contact with the top of the arc track 11. Furthermore, the tail of the fourth straight segment 28 is also connected to a fourth downhill segment 29. The fourth downhill segment 29 is connected to the uphill slope 301 of the arc track 11, and the top of the uphill slope 301 is flush with the top of the arc track 11. When the second bearing 213 rolls to the fourth downhill section 29, the outer bow sleeve 205 and the inner bow rod 206 move downwards under the elastic restoring force of the collapsible spring 225. This means that the positions of the outer bow sleeve 205 and the inner bow rod 206 will be lower than their positions on the arc track 11. At this point, the powder cup can be placed into the powder cup slot, and the inner bow rod 206 and the outer bow sleeve 205 will not interfere with the placement of the powder cup. After the powder cup is placed, the second bearing 21... 3. When entering the uphill slope 301, the outer bow sleeve 205 and the inner bow rod 206 move upward. At this time, the collapsible spring 225 will hinder the upward movement of the outer bow sleeve 205, which will cause the upward speed of the inner bow rod 206 to be greater than that of the outer bow sleeve 205. That is to say, the inner bow rod 206 enters the inner hole of the powder cup first, and then the outer bow sleeve 205 contacts the bottom of the powder cup. When the second bearing 213 enters the top surface of the arc track 11, the lower bow rod will return to its original position.

[0060] In this embodiment, as Figure 7 As shown, a guide groove 209 is axially provided on one end of the spring mounting base 210 near the outer bow sleeve 205. A guide key 208 is installed on the outer bow sleeve 205. The guide key 208 is inserted into the guide groove 209. Through the cooperation between the guide key 208 and the guide groove 209, the outer bow sleeve 205 can be prevented from rotating circumferentially relative to the spring mounting base 210, thereby ensuring the straightness of the axial movement of the outer bow sleeve 205.

[0061] In this embodiment, as Figure 6 and Figure 7 As shown, the inner cavity of the spring mounting base 210 is a stepped through hole, and the bottom of the inner cavity of the spring mounting base 210 is blocked by the bearing mounting base 211. A convex ring is provided at the bottom of the inner bow rod 206. First thrust bearings 214 are fitted on both sides of the convex ring and the inner bow rod 206. The first thrust bearings 214 are locked in the large hole of the stepped through hole. By clamping the convex ring with the two first thrust bearings 214 and locking the first thrust bearings 214 in the large hole of the stepped through hole, the inner bow rod 206 and the spring mounting base 210 can maintain the same axial displacement. At the same time, the inner bow rod... 206 can rotate circumferentially relative to the spring mounting seat 210. Furthermore, a fourth bearing 215 is installed in the small hole of the stepped through hole. The fourth bearing 215 is fitted on the inner bow rod 206. Through the fourth bearing 215, the coaxiality of the rotation of the inner bow rod 206 can be ensured. To further improve the coaxiality of the rotation of the inner bow rod 206, multiple fourth bearings 215 can be set. Therefore, the inner bow rod 206 can rotate relative to the spring mounting seat 210, thereby preventing the fourth bearing 215 from rotating with the inner bow rod 206, thus ensuring the rolling trajectory of the fourth bearing 215.

[0062] In this embodiment, as Figure 16 and Figure 21As shown, a powder cup ejection mechanism for radially ejecting the powder cup is also installed on the rotating cylinder 363. A track groove 346 for ejecting the powder cup is installed on the centering assembly. When the inner bow rod 206 exits the inner cavity of the powder cup, the seventh bearing 373 of the powder cup ejection mechanism rolls in the track groove 346. Several guide sleeves 371 are installed on the radially outer side of the rotating cylinder 363. In this embodiment, the several guide sleeves 371 are evenly distributed on the same circumference, that is, the horizontal ejection bow rods 370 are evenly distributed on the same circumference. A radial through hole 362 corresponding to the guide sleeve 371 is opened on the rotating cylinder 363. The horizontal ejection bow rod 370 is slidably installed in the guide sleeve 371. The head of the horizontal ejection bow rod 370 passes through the radial... A perforation 362 is provided, and a powder cup fixing mold 379 is installed at the head of the horizontal ejector rod 370. A seventh bearing 373 is provided at the tail of the horizontal ejector rod 370. A fixed track groove 346 is provided on the centering assembly. During the circumferential rotation of the rotating cylinder 363, the seventh bearing 373 enters into the track groove 346, and the track groove 346 pushes the horizontal ejector rod 370 out radially. In this embodiment, when the rotating cylinder 363 rotates, the horizontal ejector rod 370 rotates synchronously with the rotating cylinder 363. When the seventh bearing 373 enters into the track groove 346, the track groove 346 pushes the horizontal ejector rod 370 out radially, thereby ejecting the powder cup located in the powder cup fixing mold 379.

[0063] In this embodiment, as Figure 21 As shown, the horizontal ejector rod 370 includes a top rod 380 and an extension rod 376. The top rod 380 is slidably fitted inside the guide sleeve 371. The extension rod 376 is coaxially mounted on the head of the top rod 380 and is located on the outside of the guide sleeve 371. A seventh bearing 373 is mounted on the tail of the top rod 380. A powder cup fixing mold 379 is mounted on the head of the extension rod 376. The guide sleeve 371 has a guiding function, thereby guiding the horizontal ejector rod 370 and enabling the horizontal ejector rod 370 to extend and retract radially. Furthermore, linear bearings 375 are installed in the inner cavities at both ends of the guide sleeve 371, and the linear bearings 375 are fitted on the top rod 380, thereby further ensuring the straightness of the horizontal ejector rod 370 in the radial direction.

[0064] In this embodiment, as Figure 2As shown, the tail of the push rod 380 is provided with a protruding retaining ring 374. The retaining ring 374 is located between the seventh bearing 373 and the guide sleeve 371. A second return spring 372 is fitted on the push rod 380 between the retaining ring 374 and the guide sleeve 371. One end of the second return spring 372 abuts against the guide sleeve 371, and the other end of the second return spring 372 abuts against the retaining ring 374. When the seventh bearing 373 enters the track groove 346, the seventh bearing 373 moves along the track groove 346, thereby driving the horizontal push bow 370 to push out radially. At this time, the second return spring 372 is in a compressed state. When the horizontal push bow 370 needs to retract radially, the second return spring 372 can apply an elastic restoring force to the horizontal push bow 370, so that the horizontal push bow 370 quickly retracts and resets.

[0065] In this embodiment, as Figure 2 As shown, a limiting screw 377 is installed in the radial direction of the guide sleeve 371, and a second limiting groove 378 is provided in the axial direction of the push rod 380. The end of the limiting screw 377 is located in the second limiting groove 378. By setting the second limiting groove 378 and the limiting screw 377, the radial movement distance of the push rod 380 can be limited. That is, the radial movement distance of the horizontal push bow 370 can be limited, thereby improving the reliability of the radial push of the horizontal push bow 370. Furthermore, the limiting screw 377 and the second limiting groove 378 are in a cooperating relationship. Therefore, the horizontal push bow 370 can be prevented from rotating, thereby ensuring that the position of the powder cup fixing mold 379 is fixed, thus ensuring that the powder cup fixing mold 379 drives the powder cup to rotate, and ensuring that the powder cup is placed vertically, which is convenient for filling powder.

[0066] In this embodiment, several horizontally extending bow rods 370 rotate around the centerline of the centering shaft 342, such as... Figure 14 and Figure 15As shown, a radially extending fixing frame 345 is installed on the top cover 344. An arc-shaped block 347 is installed on the fixing frame 345. A triangular track groove 346 is formed on the top surface of the arc-shaped block 347. The included angle of the track groove 346 points to the axis of the centering shaft 342, and the apex of the track groove 346 is far away from the axis of the centering shaft 342. When the seventh bearing 373 on the horizontal push-out bow 370 enters the track groove 346, the horizontal push-out bow 370 moves along the trajectory of the track groove 346. That is, when the seventh bearing 373 enters the track groove 346, the seventh bearing 373... Guided by the track groove 346, the horizontal push-out bow 370 is gradually pushed out. When the seventh bearing 373 moves to the top of the track groove 346, the horizontal push-out bow 370 is pushed out to its maximum stroke. To ensure that the seventh bearing 373 can roll smoothly along the track groove 346, the top of the track groove 346 is a smooth arc structure, and the center of the arc structure is the axis of the centering shaft 342. When the seventh bearing 373 passes the top of the track groove 346, the horizontal push-out bow 370 gradually retracts. When the seventh bearing 373 rolls out of the track groove 346, the horizontal push-out bow 370 returns to its original position.

[0067] In this embodiment, as Figure 14 and Figure 15 As shown, a mounting cylinder 348 is provided at the bottom of the support cylinder 341. The diameter of the mounting cylinder 348 is larger than the diameter of the support cylinder 341. The bottom of the mounting cylinder 348 is provided with a burr, and a screw hole is provided on the burr for the screw to pass through. In this embodiment, the mounting cylinder 348 is mounted on the working platform 1 by screws mounted on the burr, thereby ensuring the fixed position of the mounting cylinder 348, and thus ensuring the fixed position of the centering component 340.

[0068] In this embodiment, as Figure 15 As shown, ribs 355 are installed on the inner walls of the support cylinder 341 and the mounting cylinder 348. The ribs 355 increase the structural strength of the support cylinder 341 and the mounting cylinder 348, thereby preventing deformation of the support cylinder 341 and the mounting cylinder 348 and ensuring the reliability of the position of the centering shaft 342.

[0069] In this embodiment, as Figure 1As shown, the drive device includes a drive component, a gear shaft 383, and a drive gear 382. The gear shaft 383 is rotatably mounted on the work platform 1. Preferably, a ball bearing is installed on the gear shaft 383, and then the ball bearing sleeve 351 is installed on the work platform 1, thereby realizing the rotatable installation of the gear shaft 383 and the work platform 1. The drive gear 382 is installed on the top of the gear shaft 383, and an internal gear ring 381 is installed on the inner side of the bottom of the rotating cylinder 363. The drive gear 382 and the internal gear ring 381 mesh. Furthermore, the drive component can be a servo motor. When the servo motor works, it drives the gear shaft 383 to rotate. After the gear shaft 383 rotates, it drives the drive gear 382 to rotate, thereby causing the rotating cylinder 363 to rotate. The rotating cylinder 363 rotates around the centering shaft 342 as the axis, thereby ensuring the concentricity of the rotation of the rotating cylinder 363, and thus ensuring the concentricity of the rotation of the lower bow rod 20 and the rubbing bow rod 30.

[0070] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A powder column forming device, characterized in that: The device includes a working platform, a rotating body, a fixedly mounted upper cam seat, and a drive device for driving the rotating body to rotate. The upper cam seat has an upper cam track, and the working platform is equipped with a lower cam track and a centering assembly. The rotating body rotates around the centering assembly, and several upper bow rods are slidably mounted on the upper end of the rotating body. A lower bow rod is slidably mounted on the lower end of the rotating body. A powder cup is placed in the middle of the rotating body, and a material feeding mechanism for feeding material into the powder cup is installed in the middle of the rotating body. The upper bow rods move up and down under the action of the upper cam track, and the lower bow rods move up and down under the action of the lower cam track. A rubbing mechanism corresponding to the lower bow rod is also radially mounted on the bottom of the rotating body. The lower bow rod includes an outer bow sleeve and an inner bow rod. The outer bow sleeve is fitted onto the inner bow rod. The bottom of the outer bow sleeve has a protruding abutment portion. A third bearing is installed on the radially outer side of the abutment portion. The bottom of the inner bow rod passes through the bottom of the outer bow sleeve and is mounted on a spring mounting seat. The inner bow rod can rotate circumferentially relative to the spring mounting seat. A top-compression spring is fitted onto the spring mounting seat. The other end of the top-compression spring is mounted on the abutment portion of the outer bow sleeve. There is a gap between the outer bow sleeve and the spring mounting seat. A bearing mounting seat is connected to the bottom of the spring mounting seat. A second bearing is installed on the bottom of the bearing mounting seat, and a first bearing is installed on the radially outer side of the bearing mounting seat. The rubbing mechanism includes a rubbing bow rod and a rubbing bracket. A rubbing bow rod mounting hole is radially formed at the lower end of the rotating body. The rubbing bow rod has an inner end and an outer end. The inner end is fitted into the rubbing bow rod mounting hole, and the outer end is located outside the rubbing bow rod mounting hole. An axially extending straight rack is formed on the rubbing bow rod. A toothed section extends axially on the outer circumference of the inner bow rod. A notch is formed on the outer bow rod to facilitate the exposure of the toothed section, and the straight rack meshes with the corresponding toothed section. A rotatable fifth bearing is installed at the bottom of the outer end of the rubbing bow rod. The rubbing bracket is mounted... The rubbing bracket is mounted on the working platform and is located outside the rotating body. The top of the rubbing bracket is provided with an arc-shaped groove concentric with the rotating body, and the fifth bearing can enter the arc-shaped groove and roll along the groove wall. The arc-shaped groove has an inward concave arc groove that is recessed towards the center. When the inner bow rod moves upward under the action of the lower cam track, the fifth bearing rolls in the inward concave arc groove. When the inner bow rod moves to the upper stroke, the upper bow rod moves to the lower stroke. At this time, the top of the inner bow rod and the bottom of the upper bow rod are both located inside the powder cup.

2. The powder column forming device according to claim 1, characterized in that: A first return spring is also installed in the mounting hole of the rubbing bow rod. One end of the first return spring abuts against the bottom of the mounting hole of the rubbing bow rod, and the other end of the first return spring abuts against the inner end of the rubbing bow rod. A limiting plate mounting groove corresponding to the mounting hole of the rubbing bow rod is also opened on the outer side wall of the bottom of the rotating body. A limiting plate is installed in the limiting plate mounting groove. A first limiting groove is opened on the side of the rubbing bow rod near the limiting plate. The end of the limiting plate is fitted into the first limiting groove.

3. The powder column forming device according to claim 1, characterized in that: The centering assembly includes a support cylinder, a centering shaft, an upper bearing seat, and a lower bearing seat. The support cylinder is fixed to the working platform. The upper bearing seat is mounted on a top cover of the support cylinder. The lower bearing seat is mounted on the bottom of the top cover and is located inside the inner cavity of the support cylinder. A second thrust bearing is installed inside the upper bearing seat, and a lower ball bearing is installed inside the lower bearing seat. The bottom of the centering shaft passes through the second thrust bearing and is fitted inside the lower ball bearing. The top of the centering shaft is mounted on a top mounting plate via the upper ball bearing. The top mounting plate is supported by a column mounted on the working platform, and the column is located outside the rotating body. The upper cam seat is mounted on the bottom of the top mounting plate.

4. The powder column forming device according to claim 1, characterized in that: The lower cam track includes an arc-shaped track, a lower bow rod lifting bracket, and a lower bow rod pressing block. Both ends of the lower bow rod lifting bracket are connected to the arc-shaped track. The top of the lower bow rod lifting bracket and the top of the arc-shaped track form the track for the second bearing to roll. The lower bow rod pressing block is installed on the working platform and is located inside the lower bow rod lifting bracket. A groove is provided on the outer side of the lower bow rod pressing block to restrict the rolling of the first bearing. A third bearing track bracket is also installed on the working platform. A third bearing track groove is provided on the third bearing track bracket, and the third bearing can roll along the third bearing track. The third bearing track groove includes a wedge-shaped inlet, a first smooth groove, a downslope groove, a second smooth groove, and a wedge-shaped outlet connected in sequence. When the third bearing rolls on the wedge-shaped inlet, the outer bow sleeve moves upward. When the third bearing rolls in the first smooth groove, the outer bow sleeve stops moving upward and supports the bottom of the powder cup. When the third bearing rolls on the downslope groove, the top of the outer bow sleeve disengages from the bottom of the powder cup and moves downward. When the third bearing rolls in the second smooth groove, the outer bow sleeve completely disengages from the powder cup and is fixed in position relative to the powder cup. When the third bearing rolls on the wedge-shaped outlet, the position of the outer bow sleeve gradually returns to its original position. The lower bow lifting support includes a climbing section, a first straight section, a first downhill section, a second straight section, a second downhill section, a third straight section, a third downhill section, a fourth straight section, and a fourth downhill section connected in sequence. The inlet end of the wedge-shaped inlet is located in front of the second bearing entering the climbing section, and the outlet end of the wedge-shaped inlet is located at the top front end of the climbing section. The first straight section and the first downhill section are located below the first smooth groove. The starting end of the downhill groove is located above the second straight section, and the end end of the downhill groove is located above the second downhill section. The third straight section and the third downhill section are located below the second smooth groove. The wedge-shaped outlet is located above the fourth straight section. The fourth downhill section is connected to the uphill slope of the arc track, and the top of the uphill slope is flush with the top of the arc track. The top of the trough includes a first wedge-shaped pressing port, a first straight pressing section, a second wedge-shaped pressing port, and a second straight pressing section connected in sequence. The first wedge-shaped pressing port is located above the climbing section, and the bottom of the first wedge-shaped pressing port is located in front of the top of the climbing section. The first straight pressing section and the second wedge-shaped pressing port are located below the first smoothing trough. The first downhill section is located below the first straight pressing section. The second wedge-shaped pressing port is located above the second straight section. The downhill trough is located above the second straight pressing section, and the second downhill section is located below the second straight pressing section.

5. The powder column forming device according to claim 1, characterized in that: The inner cavity of the spring mounting seat is a stepped through hole, and the bottom of the inner cavity of the spring mounting seat is blocked by the bearing mounting seat. A convex ring is provided at the bottom of the inner bow rod. A first thrust bearing is fitted on the inner bow rod on both sides of the convex ring. The first thrust bearing is locked in the large hole of the stepped through hole. A fourth bearing is installed in the small hole of the stepped through hole. The fourth bearing is fitted on the inner bow rod. A guide groove is axially opened on one end of the spring mounting seat near the outer bow sleeve. A guide key is installed on the outer bow sleeve. The guide key is inserted into the guide groove.

6. The powder column forming device according to claim 1, characterized in that: A sliding ring is fitted onto the outer bow sleeve, and a compression spring is installed on the outer bow sleeve. One end of the compression spring is installed on the abutting part of the outer bow sleeve, and the other end of the compression spring is installed on the sliding ring.

7. The powder column forming device according to claim 1, characterized in that: The rotating body includes a rotating cylinder, a powder tray, a turntable connecting seat, and an upper bow rod guide seat connected in sequence from bottom to top. The centering shaft of the centering assembly passes through the rotating cylinder, the powder tray, the turntable connecting seat, and the upper bow rod guide seat in sequence from bottom to top. At least one central hole of the powder tray, the central hole of the turntable connecting seat, and the central hole of the upper bow rod guide seat are fixedly fitted with the centering shaft. The lower bow rod and the rubbing bow rod are mounted on the rotating cylinder. The upper bow rod is slidably mounted on the upper bow rod guide seat. The bottom and top of the upper bow rod both pass through the upper bow rod guide seat. A sixth bearing is mounted on the top of the upper bow rod. The sixth bearing rolls along the upper cam track. An annular powder accumulation groove is provided on the outer edge of the powder tray. A powder discharge mold is installed at the bottom of the powder accumulation groove. A discharge hole is vertically opened on the powder discharge mold. A powder cup bearing ring is also installed at the bottom of the powder tray through a support ring. A number of powder cup placement holes are opened on the powder cup bearing ring. A powder cup fixing mold is also installed on the outer side wall of the support ring. An arc-shaped groove for supporting the powder cup is opened on the powder cup fixing mold.

8. The powder column forming device according to claim 7, characterized in that: The rotating cylinder is also equipped with a powder cup ejection mechanism that radially pushes out the powder cup. The centering assembly is equipped with a track groove that allows the powder cup ejection mechanism to eject. When the inner bow rod exits the inner cavity of the powder cup, the seventh bearing of the powder cup ejection mechanism rolls in the track groove.

9. The powder column forming device according to claim 8, characterized in that: Several guide sleeves are installed on the radial outer side of the rotating cylinder, and radial through holes corresponding to the guide sleeves are opened on the rotating cylinder. A horizontal push-out bow is slidably installed inside the guide sleeve. The head of the horizontal push-out bow passes through the radial through hole, and a powder cup fixing mold is installed at the head of the horizontal push-out bow. A seventh bearing is provided at the tail of the horizontal push-out bow. A fixed track groove is provided on the centering assembly. During the circumferential rotation of the rotating cylinder, the seventh bearing enters the track groove, and the track groove pushes the horizontal push-out bow out in the radial direction.

10. The powder column forming device according to claim 9, characterized in that: The top cover of the centering assembly is equipped with a radially extending fixing frame, and an arc-shaped block is installed on the fixing frame. A triangular track groove is formed on the top surface of the arc-shaped block. The included angle of the track groove points to the axis of the centering shaft, and the vertex of the track groove is far away from the axis of the centering shaft.

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