Automatic powder filling and molding ingot making equipment and molding method

Abstract

The present invention relates to an automatic powder filling and tablet making equipment and a forming method, the equipment comprises a press system, a feeding system, a mold system and a vibration leveling and even material system; the mold system comprises an upper mold and a lower mold, the upper mold has a central channel and a side wall channel, the upper port of the central channel is connected to the feeding system, and the lower port of the central channel is gradually expanded to form a concave opening; the vibration leveling and even material system comprises an axial mover, a vibration driver, a connecting cable and a vibration sealing head, the axial mover, the vibration driver and the connecting cable are connected in sequence, the connecting cable extends through the side wall channel into the central channel to connect the vibration sealing head, the shape of the vibration sealing head is basically consistent with the concave opening, can be fitted in the concave opening to close the concave opening, so that the lower surface of the upper mold is flush; the axial mover can drive the vibration driver and the connecting cable to move axially at the same time, and then drive the vibration sealing head to open or close the concave opening; the vibration driver can drive the vibration sealing head to vibrate through the connecting cable.

Description

Technical Field

[0001] The present invention relates to the technical field of powder molding, and more specifically to an automatic powder molding tablet making device and a molding method. Background Art

[0002] In the prior art, when the powder raw material is pressed into a long block mold, the previous process is to perform upper and lower bidirectional pressing or unidirectional pressing by one-time loading; or add powder multiple times, during which the upper mold is removed for multiple feedings, and then the pressing is performed in steps. However, these existing methods all have disadvantages. For example, the module size of the powder pressed by the one-time loading molding machine is limited and the density is uneven, and the process of only loading the powder in the middle of the multiple loading molding machine is also very complicated: for example, the upper mold must be removed and loaded again, and so on and so forth, which is time-consuming, complicated to operate, and has high time and economic costs. Therefore, the existing loading process cannot be automatically controlled, and the control of the amount of powder and the improper addition method will also pollute the environment and have many other disadvantages. In addition, the larger the size of the powder ingot produced, the more serious these problems are.

[0003] Therefore, a new powder forming technology is needed to solve the above problems existing in the prior art. Summary of the invention

[0004] In order to solve the above-mentioned problems existing in the prior art, the present invention, by setting up an automatic feeding system and a vibration leveling and equalizing system, can achieve accurate multiple automatic feeding, meet the molding accuracy and size requirements, and achieve better product quality; and during multiple feedings, there is no need to move the upper mold out of the lower mold, thereby ensuring a smooth process flow and saving time and economic costs.

[0005] According to one aspect of the present invention, there is provided an automatic powder filling and molding tablet making device, characterized in that it comprises a press system, a feeding system, a mold system and a vibration leveling and homogenizing system.

[0006] The press system includes an upper beam 11, a pressing head 12, a slider 13, a workbench 14 and a support portion 15, wherein the support portion 15 is arranged between the upper beam 11 and the workbench 14 for support, and the slider 13 can move up and down along the support portion. The press system can be hydraulically driven or other mechanically driven. The support portion 15 can be in the form of multiple support columns, or in other forms, such as a support frame, and the slider 13 moves up and down in the frame through a guide rail.

[0007] The mold system includes an upper mold 31 and a lower mold 32, wherein the upper mold 31 is arranged on the lower surface of the slider 13; the slider 13 is connected to the pressure head 12, and the slider 13 and the upper mold 31 can be driven to move up and down by the pressure head 12; the upper mold 31 has a central channel 311 and a side wall channel 312, and the lower port of the central channel 311 is gradually expanded to form a concave opening 3111; the lower mold 32 is arranged on the workbench 14 and aligned with the upper mold 31, so that the upper mold 31 can be inserted into the cavity of the lower mold 32.

[0008] The feeding system is used to feed the entire device. More specifically, the feeding system can be connected to the central channel 311 (for example, the upper port of the central channel 311) to transport the raw material to the upper mold 31 of the mold system. More specifically, in one embodiment of the present invention, the feeding system may include a material rack 21, a barrel 22, a feeding driver 23, and a feeding device 24; the material rack 21 is fixedly connected to the slider 13, the barrel 22 is arranged on the material rack 21, the feeding device 24 is fixedly connected to the slider 13, and the lower feed port 221 of the barrel 22 is connected to the feed port of the feeding device 24, the feeding driver 23 is used to drive the feeding device 24 to feed, and the discharge port of the feeding device 24 is connected to the upper port of the central channel 311. The driver 23 can be a rotary motor, or a pneumatic rotator, or a feeding air source, or a vibration source; the feeding device 24 can be a screw feeding, or a pneumatic feeding, or a vibration feeding; when vibrating the feeding, the feeding device 24 is set to be inclined to utilize vibration and gravity feeding.

[0009] The feeding system of the present invention can also be independently provided, for example, independent of the press system and the mold system, and only communicated with the central channel 311 of the upper mold 31 through a hose. More specifically, an inlet (not shown) can be provided at the upper portion of the upper mold 31, the inlet communicated with the central channel 311, one end of the hose can be fixedly connected to the inlet; the other end of the hose is connected to the outlet of the feeding system; thereby, the raw material discharged from the feeding system can be input into the upper mold 31. In addition, due to the connection through the hose, the feeding will not be affected by the up and down movement of the upper mold 31.

[0010] According to an embodiment of the present invention, it is preferred that the material rack 21 is fixedly connected to the slider 13. According to an embodiment of the present invention, it is preferred that the feeding device 24 is a screw feeder.

[0011] The vibration leveling and material equalization system includes an axial mover 41, a vibration driver 42, a connecting cable 43 and a vibration head 44, wherein the axial mover 41, the vibration driver 42 and the connecting cable 43 are connected in sequence, wherein the connecting cable 43 extends through the side wall channel 312 into the central channel 311 to connect to the vibration head 44, wherein the shape of the vibration head 44 is substantially consistent with the concave opening 3111, and can be fitted in the concave opening 3111 to close the concave opening 3111, and make the lower surface of the upper mold 31 flush; the axial mover 41 can drive the vibration driver 42 and the connecting cable 43 to move axially at the same time, and then drive the vibration head 44 to open or close the concave opening 3111; the vibration driver 42 can drive the vibration head 44 to vibrate through the connecting cable 43.

[0012] According to an embodiment of the present invention, the automatic powder molding and tablet making equipment further comprises an automatic control system, and the automatic control system is respectively connected to the press system, the feeding system, and the vibration leveling and even material system.

[0013] According to an embodiment of the present invention, the automatic control system is a PLC control system.

[0014] According to an embodiment of the present invention, the axial mover 41 is disposed on the slider 13 , and the vibration driver 42 is axially displaceably disposed on the slider 13 .

[0015] According to an embodiment of the present invention, the number of the feeding systems is one to four, with two being preferred. The discharge port of the feeding device ( 24 , 24 ′) of each feeding system is communicated with the upper port of the central channel 311 .

[0016] According to the embodiment of the present invention, the concave opening 3111 is in the shape of a frustum, such as a circular frustum or other shapes that are smaller at the top and larger at the bottom.

[0017] According to an embodiment of the present invention, the side wall channel 312 passes through the outer wall of the upper mold 31 from the outside to the inside, for example, it can pass through the outer wall obliquely.

[0018] According to an embodiment of the present invention, the connecting cable 43 includes a flexible power transmission shaft 431 and an outer sleeve 432 , and the vibration driver 42 is connected to the vibration sealing head 44 through the outer sleeve 432 .

[0019] According to an embodiment of the present invention, the seismic sealing head 44 includes a vibrator 441; the rotating shaft of the vibration driver 42 is connected to the flexible power transmission shaft 431, and the flexible power transmission shaft 431 is connected to the vibrator 441, thereby being able to drive the vibrator 441 to make the seismic sealing head 44 vibrate periodically.

[0020] According to an embodiment of the present invention, the vibrator 441 is selected from an eccentric rotor, a pneumatic vibrator and an electromagnetic vibrator.

[0021] According to an embodiment of the present invention, the seismic head 44 further includes a sealing ring, a rolling bearing or a sliding bearing, and the vibrator 441 causes the seismic head 44 to vibrate periodically through the sealing ring, the rolling bearing or the sliding bearing.

[0022] According to another aspect of the present invention, there is provided a method for automatic powder feeding molding, characterized in that the method includes achieving multiple feedings without moving the upper mold out of the mold during the molding process, and compacting can be performed in batches.

[0023] According to an embodiment of the present invention, the feed material is metal powder.

[0024] According to an embodiment of the present invention, the feed material is non-metallic powder.

[0025] According to an embodiment of the present invention, the metal powder is a mixed powder of metal powder and non-metal powder.

[0026] According to an embodiment of the present invention, it is characterized in that the feed material is a metal-based composite material powder.

[0027] The automatic powder filling and tablet making equipment of the present invention utilizes the upper mold as the feeding channel, simplifies the structure, and combines with the vibration leveling and even feeding system, so that multiple feedings can be achieved without removing the upper mold, thereby ensuring the smoothness of the process flow; for example, the vibration head 44 makes the feeding uniform and even, combined with the automatic controllable and precise feeding, it can achieve modular finished products of multiple specifications, and the cost-effectiveness is optimized. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0029] Figure 1 It is a schematic cross-sectional view of a front view of an automatic powder molding tablet making device according to one embodiment of the present invention;

[0030] Figure 2 for Figure 1 A schematic cross-sectional view of a side view of an automatic powder molding tablet making device shown;

[0031] Figure 3 for Figure 2 A partial enlarged view of

[0032] Figure 4 for Figure 2 A partial enlarged cross-sectional view in FIG.

[0033] Figure 5 A schematic diagram of feeding of an automatic powder molding tablet making device according to one embodiment of the present invention;

[0034] Figure 6 It is a schematic diagram of vibrating and leveling the fed powder material in the automatic powder filling and molding tablet making equipment according to another embodiment of the present invention.

[0035] Figure markings: 1-raw material, 11-upper beam; 12-pressing head; 13-slider; 14-workbench; 15-support part; 21, 21'-material rack; 22, 22'-barrel; 221, 221'-feeding port; 23, 23'-feeding drive; 24, 24'-feeding device; 241-discharging port; 31-upper mold; 311-center channel; 312-side wall channel; 3111-concave opening; 41-axial mover; 42-vibration drive; 43-connecting cable; 431-flexible power transmission shaft; 432-outer sleeve; 441-vibrator; 442-sealing ring; 44-vibration head. DETAILED DESCRIPTION

[0036] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0037] Figure 1 It is a schematic cross-sectional view of a front view of an automatic powder molding tablet making device according to one embodiment of the present invention; Figure 2 for Figure 1 The schematic cross-sectional view of the side view of the automatic powder filling and molding tablet making equipment shown in FIG. Figure 1 and 2 The automatic powder molding and tablet making equipment of the present invention may include a press system, a feeding system, a mold system, a vibration leveling and material equalization system, and an automatic control system (not shown). The various systems are interconnected and supported, and as a whole constitute an example of the automatic powder molding and tablet making equipment of the present invention.

[0038] like Figure 1 and 2As shown, the press system may include an upper beam 11, a ram 12, a slider 13, a workbench 14, and a support portion (a plurality of support columns) 15, thereby forming a basic support frame, wherein the plurality of support columns are arranged between the upper beam 11 and the workbench 14 for support, for example, the support columns can be fixed between the upper beam 11 and the workbench 14 by bolt connection or the like, and the slider 13 is formed with holes corresponding to the support columns, thereby passing through the support columns and being arranged. The support columns may be 4, 6, etc., or may be arranged according to specific circumstances. The ram 12 is fixed on the upper beam 11 and connected to the slider 13, and the slider 13 can move up and down along the support columns under the drive of the ram 12. Of course, the support portion 15 may be in other forms such as a support frame (not shown), and the support frame may be connected to the upper beam 11 and the workbench 14 by welding, and the slider 13 moves up and down in the frame through a guide rail.

[0039] The feeding system may include a material rack (21, 21'), a material barrel (22, 22'), a feeding driver (23, 23'), and a feeding device (24, 24'). That is, as shown in the figure, this embodiment includes two sets of feeding systems, and of course one set of feeding systems or more sets of feeding systems can be set according to specific circumstances. Each feeding system is basically the same, so one set is used for exemplary description.

[0040] The material rack 21 is used to fix the barrel 22, etc. The material rack 21 can be fixed on the slider 13. The barrel 22 is fixedly arranged on the material rack 21 and is used to store raw materials (feed) such as metal powder, etc. The feeding device 24 is fixedly connected to the slider 13 (for example, on the lower surface), so that the discharge port 221 of the barrel 22 is connected to the feed port of the feeding device 24. The feeding driver 23 is fixed on the feeding device 24 and is used to drive the feeding device 24 to feed. For example, the feeding device 24 can be a screw feeding device, which mainly uses the rotation of a screw with a fixed pitch to push the material forward in circles, thereby achieving the purpose of quantitative feeding, such as a twin-screw feeding device, a single-screw feeding device, etc. Such devices are well known in the art and will not be described in detail here. The feeding device 24 can also be pneumatic feeding or vibration feeding; when vibrating feeding, the feeding device 24 is set to be inclined (not shown) to utilize vibration and gravity feeding. Driven by the feeding driver 23, the feeding device 24 conveys the raw material 1, such as metal powder (such as metal matrix composite material powder), to its discharge port 241, and the discharge port of the feeding device 24 is connected to the upper end of the central channel 311 (described below) of the upper mold 31.

[0041] The mold system may include an upper mold 31 and a lower mold 32, wherein the upper mold 31 is fixedly arranged on the lower surface of the slider 13, so that the slider 13 and the upper mold 31 can be driven to move up and down by the pressure head 12; the upper mold 31 has a central channel 311 and a side wall channel 312; the upper port of the central channel 311 is connected to the discharge port of the feeding device 24, so that the raw material can enter the upper mold; the side wall channel 312 passes through the side wall of the upper mold 31 from the outside to the inside, and passes obliquely from top to bottom, for example, it can be at an angle of 0-60 degrees to the horizontal, such as an angle of 30 degrees, so that the connecting cable 43 can easily pass through and enter the central channel 311 to extend downward. It should be understood that the side wall channel 312 is arranged on the upper side wall of the upper mold 31, so as not to affect the subsequent pressing. The lower port of the central channel 311 is gradually expanded to form a concave opening 3111 (see attached Figure 5 and 6 ), for example, the concave opening 3111 may be in the shape of a truncated cone, such as a truncated cone or a truncated cone, a trumpet, or the like, which is small at the top and large at the bottom. The lower die 32 is arranged on the workbench 14 and is aligned with the upper die 31, so that the upper die 31 can be inserted into the cavity of the lower die 32, so that the raw material 1 entering the upper die can fall into the cavity of the lower die 32 through the central channel and the concave opening, and the upper die 31 can press the raw material powder in the lower die 32. When the upper die 31 is inserted into the lower die 32, there may be a gap between the two, so that the gas in the cavity of the lower die 32 can be discharged from the gap, or an exhaust passage can be formed.

[0042] The vibration leveling and material balancing system may include an axial mover 41, a vibration driver 42, a connecting cable 43, a flexible power transmission shaft 431, an outer sleeve 432, a vibrator 441, a sealing ring 442, and a vibration sealing head 44, wherein the shape of the vibration sealing head 44 is consistent with the concave opening 3111, and can be fitted in the concave opening 3111 to close the concave opening 3111. When the vibration sealing head 44 is fitted in the concave opening, the lower surfaces of the two are flush, so that the lower surface of the upper mold 31 is flat as a whole, which is beneficial to the pressing of the raw material (feed) 1; the connecting cable 43 may include a flexible power transmission shaft 431 and an outer sleeve 432 (see attached Figure 4), which is flexible as a whole. One end of the connecting cable 43 is connected to the vibration driver 42, and then extends through the side wall channel 312 into the central channel 311 to connect to the vibration head 44 set in the concave opening 3111. Among them; the axial mover 41 is connected to the vibration driver 42, driving the vibration driver 42 to drive the connecting cable 43 to move axially, so that the vibration head 44 can open or close the concave opening 3111. For example, when feeding is required, the connecting cable 43 can be driven to move downward, thereby opening the concave opening 3111, so that the raw material 1 falls into the cavity of the lower mold 32; when the vibration head 44 descends into the powder, the vibration driver 42 can drive the vibrator 441 to vibrate through the flexible power transmission shaft 431, thereby causing the vibration head 44 to vibrate and make the powder flat; then the vibration head 44 is lifted up by the axial mover 41 through the vibration driver 42 and the connecting cable 43 to close the concave opening 3111, and the press is started for molding. The axial mover 41 and the vibration driver 42 can be connected by a connecting member 45 (see the attached Figure 3 ) is arranged on the slider 13, thereby achieving stable operation and operation.

[0043] More specifically, the axial mover 41 can be a linear motor, a pneumatic mover, or a hydraulic mover; the power source of the vibration driver 42 drives the vibrator 441 to vibrate periodically through the flexible power transmission shaft 431 in the connecting cable 43, thereby causing the vibration head 44 to vibrate. The vibration driver 42 can be a rotary motor, a pneumatic rotator, a hydraulic rotator, a pneumatic controller, or an electromagnetic controller; the flexible power transmission shaft 431 can be a bendable and rotatable steel cable, which is used to connect the power source (rotating shaft) of the rotary motor or pneumatic rotator or hydraulic rotator 42 at one end, or a compressed air pipe and an air outlet pipe, which are used to connect the power source (compressed air interface) of the pneumatic controller, or it can also be an electric wire, which is used to connect the power source (wire terminal) of the electromagnetic controller. The vibrator 441 can be an eccentric rotor connected to the other end of the bendable and rotatable steel cable 431. When the eccentric rotor rotates, it causes the vibration head 44 to vibrate periodically through the sealing ring 442 (which can be a rolling bearing or a sliding bearing); the vibrator 441 can also be a pneumatic vibrator, connected to the compressed air pipe 431 and the air outlet pipe through the sealing ring 442, and the compressed air drives the vibration, thereby driving the vibration head 44 to vibrate periodically; the vibrator 441 can also be an electromagnetic vibrator, connected to the electric wire introduced by the sealing ring 442, and the change of electric current causes the electromagnetic vibrator 441 to vibrate, thereby driving the vibration head 44 to vibrate periodically.

[0044] In addition, according to an embodiment of the present invention, the automatic powder molding and tablet making equipment may further include an automatic control system (not shown), which is respectively connected to the press system, the feeding system, and the vibration leveling and equalizing system, so as to realize the automatic control of the process flow, for example, the automatic control system is a PLC control system. More specifically, for example, the control system may include a power supply, a central processing unit (CPU), a memory, an input and output interface circuit, a functional module, a communication module, and the like. Such a control system is well known in the art and will not be described in detail herein.

[0045] According to another aspect of the present invention, there is also provided a method for automatically feeding powders for forming, the method comprising achieving multiple feedings without moving the upper die out of the die during the forming process. The operation method and working principle of the present invention are described below in conjunction with the accompanying drawings.

[0046] First, the raw material 1 (aluminum-based metal powder) is placed in the loading barrel 22 of the material rack 21. The control system drives the pressure head 12 to move the slider 13 downward according to a preset program, driving the upper mold 31 to enter the lower part of the lower mold 32, and starting the feeding device 24 to transport a predetermined amount of raw material to its discharge port and drop it into the central channel 311. At the same time, the vibration and leveling system drives the connecting cable 43 to descend, and operates the vibration sealing head 44 to be in an open position, thereby opening the concave opening 3111; the raw material 1 entering the central channel 311 thus falls into the lower mold 32. When the raw material begins to be filled, the shock head 44 vibrates under the control of the axial mover 41 and the vibration driver 42 to achieve the leveling of the powder. After the leveling is completed, the shock head 44 gradually rises, stops vibrating after being separated from the raw material, and returns to the position of the concave opening 3111 of the upper mold. Then the pressure head 12 moves the upper mold 31 downward to press the raw material powder. After a predetermined time, the pressure head 12 drives the slider 13 to move upward, lifts the upper mold to a certain height, and then drives the shock head 44 to leave the concave opening 3111 (at this time, the concave opening 3111 is still located in the lower mold 32), continues to feed, then vibrates and levels the material, and then applies pressure. This is repeated many times until the formed module reaches the set height requirement.

[0047] Compared with the prior art, the technical solution of the present invention can achieve many beneficial effects. For example, the automatic powder molding and tablet making equipment of the present invention utilizes the upper mold as the feeding channel, simplifies the structure, and combines with the vibration and leveling system to enable multiple feedings without removing the upper mold and make the material level and even, thereby ensuring the smoothness of the process flow. For example, the vibration head 44 of the present invention can vibrate so that the feed is evenly distributed. Combined with the automatic controllable and precise feeding, the present invention can realize powder compaction module finished products of multiple specifications, and the cost-effectiveness is optimized.

[0048] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0049] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0050] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. An automatic powder molding and tablet making equipment, characterized in that , including press system, feeding system, mold system and vibration leveling and balancing system; The press system comprises an upper beam (11), a pressing head (12), a sliding block (13), a workbench (14), and a supporting portion (15), wherein the supporting portion (15) is arranged between the upper beam (11) and the workbench (14) for support, and the sliding block (13) can move up and down along the supporting portion; The mold system comprises an upper mold (31) and a lower mold (32), wherein the upper mold (31) is arranged on the lower surface of a slider (13); the slider (13) is connected to a pressure head (12), and the slider (13) and the upper mold (31) can be driven to move up and down by the pressure head (12); the upper mold (31) has a central channel (311) and a side wall channel (312), and the lower end of the central channel (311) is gradually enlarged to form a concave opening (3111); the lower mold (32) is arranged on the workbench (14) and aligned with the upper mold (31), so that the upper mold (31) can be inserted into the mold cavity of the lower mold (32); The feeding system is in communication with the central channel (311) and is capable of feeding material into the central channel (311) of the upper mold (31); The vibration leveling and balancing system comprises an axial mover (41), a vibration driver (42), a connecting cable (43) and a vibration sealing head (44), wherein the axial mover (41), the vibration driver (42) and the connecting cable (43) are connected in sequence, and the connecting cable (43) extends through the side wall channel (312) into the central channel (311) to connect to the vibration sealing head (44), wherein the shape of the vibration sealing head (44) is substantially consistent with the concave opening (3111) and can be matched in the concave opening (3111). 11) to close the concave opening (3111) and make the lower surface of the upper mold (31) flush; the axial mover (41) can drive the vibration driver (42) and the connecting cable (43) to move axially at the same time, and then drive the vibration sealing head (44) to open or close the concave opening (3111); the vibration driver (42) can drive the vibration sealing head (44) to vibrate through the connecting cable (43), thereby achieving multiple feeding without removing the upper mold during the molding process and compacting the fed material in batches.

2. The automatic powder molding and tablet making equipment according to claim 1, characterized in that: It also includes an automatic control system, which is connected to the press system, the feeding system, and the vibration leveling and material balancing system respectively.

3. The automatic powder molding and tablet making equipment according to claim 2, characterized in that: The automatic control system is a PLC control system.

4. The automatic powder molding and tablet making equipment according to claim 1, characterized in that: The axial mover (41) and the vibration driver (42) are arranged on the slider (13).

5. The automatic powder molding tablet making equipment according to claim 1, characterized in that: The feeding system comprises a material rack (21), a material barrel (22), a feeding drive (23), and a feeding device (24); the material barrel (22) is arranged on the material rack (21), the material rack (21) and the feeding device (24) are fixed on a slider (13), and a lower material port (221) of the material barrel (22) is communicated with a feeding port of the feeding device (24), and the feeding drive (23) is used to drive the feeding device (24) to feed; and the discharge port (241) of the feeding device (24) is communicated with an upper port of the central channel (311).

6. The automatic powder molding and tablet making equipment according to claim 5, characterized in that: The feeding system comprises one to four sets, and the discharge ports of the respective feeding devices (24, 24') are in communication with the upper port of the central channel (311).

7. The automatic powder molding and tablet making equipment according to claim 5, characterized in that: The feeding device (24) is selected from a screw feeding device, a pneumatic feeding device and a vibration feeding device.

8. The automatic powder molding and tablet making equipment according to claim 1, characterized in that: The concave opening (3111) is in the shape of a frustum.

9. The automatic powder molding and tablet making equipment according to claim 1, characterized in that: The side wall channel (312) passes through the outer wall of the upper mold (31) obliquely from top to bottom.

10. The automatic powder molding tablet making equipment according to claim 1, characterized in that: The connecting cable (43) comprises a flexible power transmission shaft (431) and an outer sleeve (432), and the vibration driver (42) is connected to the vibration sealing head (44) via the outer sleeve (432).

11. The automatic powder molding tablet making equipment according to claim 10, characterized in that: The vibration sealing head (44) comprises a vibrator (441); the rotating shaft of the vibration driver (42) is connected to the flexible power transmission shaft (431), and the flexible power transmission shaft (431) is connected to the vibrator (441), thereby being able to drive the vibrator (441) to cause the vibration sealing head (44) to vibrate periodically.

12. The automatic powder molding tablet making equipment according to claim 11, characterized in that: The vibrator (441) is selected from an eccentric rotor, a pneumatic vibrator and an electromagnetic vibrator.

13. The automatic powder molding tablet making equipment according to claim 11, characterized in that: The seismic sealing head (44) further comprises a sealing ring, a rolling bearing or a sliding bearing (442), and the vibrator (441) causes the seismic sealing head (44) to vibrate periodically via the sealing ring, the rolling bearing or the sliding bearing (442).

14. The automatic powder molding tablet making equipment according to claim 1, characterized in that: The press system is a hydraulic system.

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