A multi-material automatic sample pressing machine

Abstract

The present invention relates to a multi-material automatic sample pressing machine, and belongs to the technical field of metallurgical testing equipment. The machine includes a sample cup conveying assembly and a sample delivery conveying assembly arranged on one side of a workbench, a turntable assembly arranged in the middle of the workbench, and a tablet pressing assembly, a ring grabbing assembly, and a liftable filler feeding assembly surrounding the turntable assembly. After adopting the present invention, not only are the various unit devices integrated together, occupying a small area, and convenient for maintenance and debugging, but also the switching is rapid, which is conducive to ensuring the state of the sample and creates good conditions for subsequent testing and inspection; and the turret is convenient for setting up multiple quantitative dispensing devices as needed, so that the equipment has ideal adaptability, and can automatically complete the preparatory operations before testing multiple varieties of samples and continuous multiple samples.

Description

Technical Field

[0001] The invention relates to a sorting and storing device, in particular to an automatic multi-material pressing machine, belonging to the technical field of metallurgical detection and testing equipment. Background Art

[0002] Sample testing in industries such as metallurgy requires a series of preparatory operations such as sample delivery, quantification, sample preparation, and output. For a long time, such operations have been completed separately with the help of independent unit equipment, and the transfer between them needs to rely on manual labor, which is not only inefficient and unsafe, but also affects the accuracy of the test results.

[0003] Chinese patent application with application number 201810906838.5 discloses an automated detection system for metallurgical samples, which includes a group of pneumatic receiving cabinets connected to various sampling on-site equipment through conveying channels, the pneumatic receiving cabinets are arranged in an arc, a first manipulator is placed in the center of the arc, a grinding and tablet pressing machine is placed on the side of the first manipulator away from the pneumatic receiving cabinet group, a sample placement table is placed between one end of the pneumatic receiving cabinet group and the adjacent end of the grinding and tablet pressing machine, forming a C-shaped layout that semi-encloses the first manipulator; a second manipulator and a packaging device located next to the second manipulator are placed on the side of the grinding and tablet pressing machine away from the first indexing manipulator, and a detection instrument is placed on the side of the second indexing manipulator away from the grinding and tablet pressing machine.

[0004] Although this technical solution has realized the automation of the whole process from sample preparation to test results, which is significantly more efficient than before and ensures the accuracy of test results, practice shows that this technical solution has the following obvious defects: 1) It relies on robots to complete the transfer between various unit equipment, which not only occupies a large area, but also makes the maintenance and debugging of the equipment inconvenient; 2) It can only be applied to samples of a single variety and has weak adaptability. Summary of the invention

[0005] The purpose of the present invention is to address the problems existing in the above-mentioned prior art and to propose a multi-material automatic sample pressing machine which can automatically complete the whole process of sample introduction, quantification, sample preparation and sample output, so as to efficiently, accurately and safely complete the pre-test preparation of metallurgical test samples.

[0006] In order to achieve the above objectives, the basic technical scheme of the multi-material automatic sample pressing machine of the present invention is as follows: it includes a sample cup conveying assembly and a sample discharging conveying assembly arranged on one side of the workbench, a turntable assembly arranged in the middle of the workbench, and a tablet pressing assembly, a ring grabbing assembly and a liftable filler feeding assembly surrounding the turntable assembly;

[0007] The turntable assembly has a turret driven by a vertical rotating shaft, and the outer periphery of the turret is equipped with at least one quantitative dispensing device that can be rotated up and down around a horizontal axis and a sample suction cup; the quantitative dispensing device contains a feeding funnel matched with the sample cup and a leak hole that can be opened and closed to quantitatively control the dispensing, and has a loading station with the feeding funnel at the bottom and a dispensing station with the leak hole at the bottom;

[0008] The sample cup conveying assembly comprises a sample cup lifting device capable of reciprocating along the length direction; the sample cup lifting device has a lifting station located at the lower part of the quantitative dispensing device and aligned with the feeding funnel when reaching the inner end in the length direction;

[0009] The ring grabbing assembly comprises a sample ring air gripper mounted at the cantilever end of the vertical axis rotating arm, and the sample ring air gripper has a ring placing station after taking the ring;

[0010] The tablet pressing assembly comprises an upper pressing head and a lower pressing head which can move relative to each other, and also comprises a swing arm with a sample holder placed at the extended end; the swing arm has a ring receiving station which enables the sample holder to be located under the sample ring air claw placing station, a material receiving station located under the separating station, and a tablet pressing station located between the upper pressing head and the lower pressing head;

[0011] The filler feeding assembly is located below the dispensing station; the sample suction cup comprises a sampling station with the suction cup located above the tablet pressing station and a sample discharge station located at the inner end of the sample discharge conveying assembly.

[0012] In this way, as long as the action sequence of each component is coordinated, the following action process can be achieved:

[0013] When the turret drives the quantitative dispensing device to turn to the loading station, the horizontal axis of the device is turned up and down so that the feeding funnel is at the bottom; then, the sample cup lifting device of the sample cup conveying assembly sends the sample cup to the lower part of the quantitative dispensing device, aligns it with the feeding funnel, and then lifts the sample cup to insert it into the feeding funnel;

[0014] The turret rotates again, causing the quantitative dispensing device to turn to the dispensing station, and at the same time the horizontal axis of the device is turned up and down so that the leak hole is at the bottom; the swing arm of the tablet pressing assembly turns to the ring receiving station to receive the sample ring grabbed by the ring grabbing assembly, and then turns to the material receiving station under the dispensing station; the filler feeding assembly rises to make the sample ring fit the leak hole; the leak hole is controlled to open and quantitatively discharge the material;

[0015] After receiving the material, the swing arm of the tablet pressing assembly rotates to the tablet pressing station between the upper pressing head and the lower pressing head. After the upper pressing head and the lower pressing head are closed and separated, the sample suction cup on the turret assembly rotates to the sampling station to suck up the sample ring after sample pressing, and after the turret rotates again, it reaches the sample station at the inner end of the sample conveying assembly, so that the sample ring after sample pressing falls on the sample conveying assembly for output.

[0016] After adopting the present invention, not only are the various unit devices integrated together, occupying a small area and convenient for maintenance and debugging, but the switching is also rapid, which is conducive to ensuring the state of the sample and creates good conditions for subsequent detection and inspection; and the turret is convenient for setting up multiple quantitative dispensing devices as needed, so that the equipment has ideal adaptability and can automatically complete the preparation operations before the detection of multiple varieties of samples and multiple consecutive samples.

[0017] The present invention is further improved in that it also includes a ring-up assembly that can push the sample ring from the ring barrel to the ring supply station, and the ring supply station is located on the rotation radius of the rotating arm of the ring grabbing assembly; the sample ring air gripper of the ring grabbing assembly has a ring taking station corresponding to the ring supply station. Therefore, as long as the whole stack of sample rings is placed in the ring barrel, the rings can be supplied one by one as needed, so as to facilitate subsequent automatic operations, thereby further improving the degree of automation.

[0018] The present invention is further improved in that it also includes a purge component and a dust removal component. The quantitative dispensing device also has a cleaning station with the leak hole on the top and the feed funnel on the bottom. The purge component has a lower blow port that can be raised and lowered above the leak hole, and the dust removal component has a dust suction pipe that can be raised and lowered below the feed funnel. Therefore, after quantitative dispensing, the sample cup and the sample ring can be taken away, the lower blow port can be lowered, the dust suction pipe can be raised, the leak hole can be opened, and the quantitative dispensing device can be automatically cleaned by simultaneously purging the leak hole and sucking dust from the feed funnel, laying a good foundation for subsequent work.

[0019] A further improvement of the present invention is that it also includes a wiping assembly, and the swing arm of the tablet pressing assembly also has a wiping station located under the wiping assembly, so that the sample tray can be automatically wiped clean when needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention.

[0022] Figure 2-1 yes Figure 1 Schematic diagram of the three-dimensional structure after removing the upper cover.

[0023] Figure 2-2 yes Figure 1 Schematic diagram of the three-dimensional structure from another perspective after removing all covers.

[0024] Figure 3 yes Figure 1 Schematic diagram of the three-dimensional structure of the turntable assembly.

[0025] Figure 3-1 yes Figure 3 Schematic diagram of the three-dimensional structure of the quantitative separation device.

[0026] Figure 3-2 yes Figure 3 Schematic diagram of the cross-sectional structure of the quantitative dispensing device in FIG.

[0027] Figure 4 yes Figure 1 Schematic diagram of the three-dimensional structure of the sample cup conveying component.

[0028] Figure 5 yes Figure 1 Schematic diagram of the three-dimensional structure of the ring grabbing component.

[0029] Figure 6 yes Figure 1 Schematic diagram of the three-dimensional structure of the tablet pressing component.

[0030] Figure 7 yes Figure 1 Schematic diagram of the three-dimensional structure of the filler feeding assembly.

[0031] Figure 8 yes Figure 1 Schematic diagram of the three-dimensional structure of the sample output component.

[0032] Fig. 9 yes Figure 1 Schematic diagram of the three-dimensional structure of the upper ring assembly.

[0033] Fig.10 yes Figure 1 Schematic diagram of the three-dimensional structure of the purge assembly.

[0034] Fig.11 yes Figure 1 Schematic diagram of the three-dimensional structure of the dust removal component.

[0035] Fig.12 yes Figure 1 Schematic diagram of the three-dimensional structure of the wiping component.

[0036] Fig.13 , 14 , 15, and 16 are Figure 1 Schematic diagram of the swing arm of the tablet pressing assembly in the embodiment being located at the ring receiving station, material receiving station, tablet pressing station, and wiping station. DETAILED DESCRIPTION

[0037] Embodiment 1

[0038] The basic structure of the multi-material automatic press machine in this embodiment is as follows: Figure 1 and Figure 2-1 , Figure 2-2As shown, a sample cup conveying assembly 7 and a sample delivery conveying assembly 9 are arranged parallel to each other on one side of the workbench 1, and are used to connect with the robot for transferring the sample cups and sample rings containing the samples to be tested. After lifting the upper cover 1-1 of the workbench, it can be seen that a turntable assembly 2 is arranged in the middle of the workbench 1, and a tablet pressing assembly 3, a wiping assembly 5, an upper ring assembly 4, a ring grabbing assembly 6, a purge assembly 10, a dust removal assembly 11, and a liftable filler feeding assembly 8 are arranged around the turntable assembly 2.

[0039] The specific structure of the turntable assembly 2 is as follows: Figure 3 As shown, the tower bottom 2-1 fixed on the workbench 1 is equipped with an octagonal turret 2-4 driven by a turret motor 2-6 and a vertical rotating shaft, and the outer periphery of the turret is evenly distributed with four quantitative dispensing devices 2-5 which can also be turned up and down around the horizontal axis, and a sample suction cup 2-2 located at the lower end of the lifting cylinder 2-3 at the front end of the extension arm is also installed between two quantitative dispensing devices. The sample suction cup 2-2 is controlled with the turret rotation, and has a sampling station where the suction cup is located above the tablet pressing station and a sample station located at the inner end of the sample conveying assembly 9.

[0040] Although the quantitative dispensing device can refer to the prior art public documents such as the raw material quantitative dispensing device with application number CN01267187.8, the logistics line quantitative dispensing device with application number CN201821730061.3, and the granular product packaging quantitative dispensing mechanism with application number CN201720785052.3, the quantitative dispensing device 2-5 of the powder sample in this embodiment adopts Figure 3-1 and Figure 2-2The innovative structure includes a housing D-5 which is placed on a rotary cylinder D-8 and can rotate around a horizontal axis. The rotary cylinder D-8 is installed on the turret 2-4. A pneumatic vibrator D-2 (commonly known as an air hammer) is installed on one side of the housing D-5. A feed funnel D-1 which forms a vertical moving pair with the housing D-5 is installed in its vertical central hole D-5-1. The inner wall of the feed funnel D-1 is mirror-polished. The upper inner diameter of the feed funnel D-1 is adapted to the outer diameter of the material cup D-6, which is used to seal and insert the material cup D-6. The two outer sides are respectively equipped with a cup clamping cylinder D-7. The horizontal telescopic end of the cup clamping cylinder D-7 is equipped with an inner head D-7-1 adapted to the positioning groove of the material cup D-6, so that the inserted material cup D-6 can be reliably positioned and clamped pneumatically. The lower end of the central hole D-5-1 of the feed funnel D-1 tapers to form a funnel mouth, and the funnel mouth is provided with a cross rib D-1-1, and a valve stem D-4 extending downward is installed in the center of the cross rib D-1-1. A pair of lifting cylinders D-3 are installed at the lower part of the shell D-5, and the upper ends of the lifting pistons D-3-1 of the lifting cylinders D-3 are fixedly connected to the outer circle of the lower tapered part of the central hole D-5-1 of the feed funnel D-1 through the upper seat plate D-9. A metering head D-11 with a transition arc to form a tapered leak hole D-11-1 is installed at the lower end of the shell D-5. The lower end of the valve stem D-4 is in a gradually expanding frustum shape, which is adapted to the leak hole D-11-1, and its maximum outer diameter is smaller than the maximum inner diameter of the leak hole D-11-1, so it can be lowered when descending. Figure 3-2 As shown, the leak hole D-11-1 is blocked.

[0041] The central hole D-5-1 of the feed funnel D-1 and the metering head D-11 are sealed and connected via an elastic silicone tube D-10, and are reinforced with fasteners such as a clamp to form a flexible connecting channel.

[0042] During operation, the rotating cylinder first drives the shell to place the feed funnel at the bottom and the metering head at the top, which is in the loading position. After the material cup containing the sample is inserted from bottom to top, the cup clamping cylinder moves to tighten the material cup, and then the rotating cylinder drives the shell to place the feed funnel at the top and the metering head at the bottom, which is in the dispensing position. After a material receiving test device such as a sample ring is placed below, the lifting cylinder is started to lift, and the lifting piston is in the raised position to lift the valve stem to open the leak hole, and the metering head is opened to discharge the material; when the discharge reaches the predetermined amount, the lifting cylinder falls in time, and the lifting piston is in the lowered position, the valve stem closes the leak hole, and the metering head is closed; finally, the rotating cylinder drives the shell again to place the feed funnel downward and the metering head upward, and the excess powder returns to the material cup, and the cup clamping cylinder is released, the material cup can be moved away from the quantitative dispensing device, and the filled sample ring can be sent for sample pressing. Not only can the flexible channel structure and the lifting and lowering control of the lifting cylinder be used to conveniently and reliably realize quantitative sample taking, ensuring airtightness, no leakage and no pollution, but also after one quantitative taking, the excess sample can be directly returned to the material cup, so that the same sample can be quantitatively taken multiple times, realizing the integrated design of quantitative acquisition and residual material return.

[0043] The specific structure of the sample cup conveying assembly 7 is as follows: Figure 4 As shown, the cantilevered cup delivery rail 7-3 is supported on the base frame 7-1, and the sample cup lifting device that can reciprocate along the length direction contains a cup delivery block 7-4 with a sample cup platform 7-5 on the top. The cup delivery block 7-4 can not only be driven to move along the cup delivery rail 7-3, but also can lift the cup under the action of the cup lifting cylinder 7-2. When the sample cup lifting device reaches the inner end of the cup delivery rail 7-3 in the length direction, it is located at the lower part of the quantitative dispensing device 2-5 and the lifting position aligned with the feed funnel D-1. At this time, the cup lifting cylinder 7-2 can lift the sample cup containing the sample from bottom to top and insert it into the feed funnel D-1. In addition, the sample cup conveying component 7 can also be transported in the reverse direction as needed, and the material cup containing excess sample is returned and output, and transferred and temporarily stored by the robot.

[0044] The structure of the ring grabbing assembly 6 is as follows Figure 5 As shown, the upper end of the vertical axis 6-2 of the bottom rotary cylinder 6-1 is connected to the rotating arm 6-3, and the cantilever end of the rotating arm 6-3 is installed with a downward sample ring gripper 6-5 (DHDS-32-A model purchased from FESTO of Germany), and the sample ring gripper 6-5 has a ring taking station and a ring placing station on the same arc.

[0045] The tablet pressing assembly 3 can adopt the structure of the prior art such as the laboratory grinding tablet pressing machine with application number CN201720137476.9, the laboratory multifunctional slag sample preparation tablet pressing device and integrated machine with application number CN201710013812.3. Figure 6 As shown, the base 3-8 of the tablet pressing assembly 3 is provided with a lower pressing head 3-7 at the lower part, and an upper pressing head 3-1 located at the lower end of the lower pressing cylinder 3-3 at the upper part. Under the driving action of the lower pressing cylinder 3-3, the upper pressing head 3-1 can move downward relative to the lower pressing head 3-7. A dust suction nozzle 3-2 is provided above the lower pressing head 3-7 to suck away the dust overflowed during sample pressing. In addition, a swing arm 3-5 is hingedly provided on one side of the upper part of the base 3-8 through a vertical electric shaft 3-4, and a sample holder 3-6 for positioning the sample ring is placed at the extended end of the swing arm. Driven by the electric shaft 3-4, the swing arm 3-5 can place the sample holder 3-6 at the ring receiving station under the sample ring air gripper release station (see Fig.13 ), the material receiving station under the quantitative dispensing device dispensing station (see Fig.14 ), the tableting station between the upper and lower press heads (see Fig.15 ) and wiping stations (see Fig.16 ) - Switch between the four jobs as needed.

[0046] Filler feeding assembly 8 Figure 7As shown, it is composed of a liftable ring support 8-1 installed under the dispensing station of the quantitative dispensing device through a frame 8-2. The ring support 8-1 is driven by a support cylinder 8-3. After placing a sample ring under the leak hole of the quantitative device, the sample ring can be lifted up to make it close to the leak hole, thereby avoiding leakage. After opening the quantitative head to discharge the material, the ring support 8-1 is lowered to take away the sample ring.

[0047] Sample delivery assembly 9 Figure 8 As shown, the cantilevered sample rail 9-2 is supported on the support frame 9-1, and the upper surface of the sample rail 9-2 carries the sample supporting slider 9-3. Since the sample suction cup has a sampling station with the suction cup located above the tablet pressing station and a sample discharge station located at the inner end of the sample discharge conveying assembly, the pressed sample ring can be transferred to the sample discharge conveying assembly 9, and then transferred to the robot by the sample discharge conveying assembly 9.

[0048] The function of the upper ring assembly 4 is to eject a group of sample rings one by one so that the ring grabbing assembly 6 can grab them. Its structure is as follows: Fig. 9 As shown, a ring transfer platform 4-3 is mounted on the bottom support 4-4, and a ring cylinder 4-2 for placing a whole stack of sample rings 4-1 is provided at one end of the ring transfer platform 4-3, and a ring outlet 4-5 is provided at the other end, and a top ring cylinder is provided at the lower part of the ring outlet 4-5. Since the upper ring assembly 4 is located on the rotation radius of the rotating arm of the ring grabbing assembly 6, a ring supply station is determined, and the sample ring air gripper of the ring grabbing assembly has a ring taking station corresponding to the ring supply station. Therefore, as long as the whole stack of sample rings is placed in the ring cylinder, the sample rings can be sent out from the ring outlet to be grabbed as needed, and subsequent operations can be automatically performed.

[0049] The purge assembly 10 and the dust removal assembly 11 are arranged in pairs at the upper and lower cleaning stations of the quantitative dispensing device, with the leak hole at the upper side and the feed funnel at the lower side. Fig.10 As shown, the purge assembly 10 has a lower blow port 10-2 which can be raised and lowered and is located above the leak hole. The lower blow port 10-2 is arranged at one end of the lifting device 10-1, so it can be lowered to the leak hole in the upper position as needed. The dust removal assembly 11 has a dust suction pipe 11-2 located below the feed hopper. The dust suction pipe 11-2 is fixed on the liftable slider 11-1. Therefore, after the quantitative dispensing is completed and the sample cup and the sample ring are taken away, the lower blow port can be lowered, the dust suction pipe can be raised, the leak hole can be opened, and the quantitative dispensing device can be automatically cleaned by combining blowing and suction.

[0050] The wiping component 5 can adopt the existing technology such as the plate surface wiping device with application number CN 201910384053.0, or can also be as Fig.12As shown, the wiping station corresponding to the swing arm of the sheet pressing assembly is arranged, and the upper part of the mounting plate C-1 is equipped with a driven reel C-3 for placing the dust-free paper roll C-2. The driven reel C-3 is equipped with a baffle C-3-1 through a locking device C-3-2, so as to prevent the paper tape from running off. An inverted T-shaped winding wheel group is installed below the driven wheel shaft C-3, wherein the upper left and right bearing rubber-coated rollers C-4 and C-5 are tangent to the lower polyurethane pressure roller C-6 respectively. The wiping unit C-7 is installed below the winding wheel group through the lifting cylinder C-7-1 located on the rear side of the mounting plate C-1. The wiping unit C-7 consists of a flat-bottomed wiping block C-7-2 and guide rods C-8 located on both sides of the wiping block. The wiping block C-7-2 and the mounting plate C-1 form a vertical moving pair, which can be driven by the cylinder to rise and fall as needed. An active reel C-9 is installed next to the wiping unit C-7. The mounting plate C-1 is also equipped with a meter counter C-10, the sensor wheel of which is tangent to the steering rod C-11 installed on the tape winding path. When in use, the sample tray to be wiped moves to the bottom of the wiping assembly, the wiping block is driven down to fit the sample tray, and the motor drives the active reel to pull out the dust-free cloth, and then wiping can be carried out until the meter counter detects that the length of the paper tape pulled out reaches the set value, and sends a stop signal to control the motor to stop, ending the automatic wiping of the sample tray.

[0051] The automatic pressing process of the multi-material automatic pressing machine of this embodiment is as follows: 1) placing the sample cup on the sample cup conveying assembly and inputting the type of sample cup of the material to be tested into the control system of the pressing machine; 2) after the control system determines the quantitative dispensing device corresponding to the material, it controls the turret to drive the quantitative dispensing device to rotate to the loading station, and the horizontal axis of the quantitative dispensing device is turned up and down so that the feeding funnel is at the bottom; then, the sample cup lifting device of the sample cup conveying assembly sends the sample cup to the lower part of the quantitative dispensing device, aligns it with the feeding funnel, and then lifts the sample cup to insert it into the feeding funnel; 3) the turret rotates again to turn the quantitative dispensing device to the dispensing station, and at the same time, the horizontal axis of the quantitative dispensing device is turned up and down so that the leak hole is at the bottom; the upper ring assembly pushes the sample ring from the ring cylinder to the ring supply station, and the sample ring air claw of the ring grabbing assembly turns the sample ring from the ring supply station to the Move to the ring taking station; the swing arm of the tablet pressing assembly turns to the ring receiving station to receive the sample ring grabbed by the ring grabbing assembly, and then turns to the material receiving station under the dispensing station; the filler feeding assembly rises to make the sample ring fit the leak hole; the leak hole is controlled to open and quantitative material is discharged; 4) After receiving the material, the swing arm of the tablet pressing assembly turns to the tablet pressing station between the upper pressure head and the lower pressure head, and after the upper and lower pressure heads are pressed together to complete the sample pressing and separate, the sample suction cup on the turret assembly turns to the sampling station to suck up the sample ring after the sample is pressed, and after the turret rotates again, it reaches the sample discharge station at the inner end of the sample discharge conveying assembly, so that the sample ring after the sample is pressed falls on the sample discharge conveying assembly for output; 5) After the sample preparation is completed, the sample cup is output along the original path, and is taken away by a robot or manually; 6) Finally, the quantitative dispensing device is purged and dusted at the cleaning station, and the sample tray of the tablet pressing assembly is wiped and cleaned at the wiping station.

[0052] After adopting this embodiment, continuous input of multiple sample cups and continuous input of multiple types of materials can be formulated according to the above process and actual production needs, thereby meeting the needs of various actual process flows.

[0053] Experiments have shown that the significant advantages of this embodiment can be summarized as follows: 1) Automated integrated operations with low reliance on robots, avoiding the influence of human factors on the test results; 2) A specific quantitative component is selected for the same type of sample, and after sample preparation, there are various cleaning methods such as scraping, wiping, blowing, and negative pressure vacuuming, which effectively avoids cross contamination between samples and ensures the accuracy of the test results; 3) It can automatically complete all preparations before testing multiple varieties of samples and multiple consecutive samples, and has ideal adaptability.

[0054] In addition to the above embodiments, the present invention may also have other implementation modes. Any technical solution formed by equivalent replacement or equivalent transformation falls within the protection scope required by the present invention.

Claims

1. A multi-material automatic pressing machine, characterized by: It comprises a sample cup conveying assembly (7) and a sample discharging conveying assembly (9) which are arranged on one side of a workbench and are parallel to each other, a turntable assembly (2) which is arranged in the middle of the workbench, and a tablet pressing assembly (3), a ring grabbing assembly (6) and a liftable filler feeding assembly (8) which surround the turntable assembly; The turntable assembly (2) comprises a turntable driven by a vertical rotating shaft, and the outer periphery of the turntable is provided with at least one quantitative dispensing device that can be rotated up and down around a horizontal axis and a sample dispensing suction cup; the quantitative dispensing device comprises a feeding funnel matched with the sample cup and a leak hole that can be opened and closed to quantitatively control the dispensing, and comprises a loading station with the feeding funnel at the bottom and a dispensing station with the leak hole at the bottom; The sample cup conveying assembly (7) comprises a sample cup lifting device capable of reciprocatingly conveying the sample cup along the length direction; the sample cup lifting device has a lifting station which is located at the lower part of the quantitative dispensing device and is aligned with the feeding funnel when reaching the inner end in the length direction; The ring grabbing assembly (6) comprises a sample ring air gripper mounted at the cantilever end of the vertical axis rotating arm, and the sample ring air gripper has a ring placing station after taking the ring; The tablet pressing assembly (3) comprises an upper pressing head and a lower pressing head which can move relative to each other, and also comprises a swing arm with a sample holder placed at an extended end; the swing arm at least comprises a ring receiving station which enables the sample holder to be located under the sample ring air gripper release station, a material receiving station located under the separating station, and a tablet pressing station located between the upper pressing head and the lower pressing head; The filler feeding assembly (8) is located below the dispensing station; the sample suction cup comprises a sampling station with the suction cup located above the tablet pressing station and a sample discharge station located at the inner end of the sample discharge conveying assembly (9); The turret is an octagon with four quantitative dispensing devices evenly distributed on the periphery, wherein a sample dispensing suction cup located at the lower end of the lifting cylinder at the front end of the extending arm is installed between two quantitative dispensing devices; The quantitative dispensing device includes a shell placed on a rotating cylinder and rotatable around a horizontal axis, a feed funnel forming a vertical moving pair therewith is installed in the vertical central hole of the shell; cup clamping cylinders are respectively installed on the two outer sides of the upper part of the feed funnel, and the inner diameter of the upper part is adapted to the outer diameter of the material cup; the lower end of the central hole of the feed funnel is gradually reduced to form a funnel mouth, and a valve stem extending downward is installed in the center of the funnel mouth; a pair of lifting cylinders are installed at the lower part of the shell, and the upper ends of the lifting pistons of the lifting cylinders are fixedly connected to the outer circle of the tapered part of the lower part of the central hole of the feed funnel; a quantitative head forming a tapered leak hole is installed at the lower end of the shell; the central hole of the feed funnel and the quantitative head are sealed and connected by an elastic tube to form a flexible connecting channel.

2. The multi-material automatic pressing machine according to claim 1, characterized in that: It also comprises an upper ring assembly (4) capable of pushing the sample ring from the ring cylinder to a ring supply station, wherein the ring supply station is located on the rotation radius of the rotating arm of the ring grabbing assembly; the sample ring air gripper of the ring grabbing assembly has a ring taking station corresponding to the ring supply station.

3. The multi-material automatic pressing machine according to claim 2, characterized in that: It also includes a purge component (10) and a dust removal component (11), the quantitative dispensing device also having a cleaning station with a leak hole at the top and a feed funnel at the bottom, the purge component having a liftable lower blow port located above the leak hole, and the dust removal component having a liftable dust suction pipe located below the feed funnel.

4. The multi-material automatic pressing machine according to claim 3, characterized in that: It also comprises a wiping assembly (5), and the swing arm of the tablet pressing assembly also has a wiping station located under the wiping assembly.

5. The multi-material automatic pressing machine according to claim 4, characterized in that: The lower part of the base of the tablet pressing assembly is equipped with a lower pressure head, and the upper part is equipped with an upper pressure head located at the lower end of the lower pressure cylinder. A swing arm is hinged on one side of the upper part of the base through a vertical electric rotating shaft, and a sample support is placed on the extended end of the swing arm; the swing arm has a ring receiving station that places the sample support under the sample ring air claw ring releasing station, a material receiving station under the quantitative dispensing device dispensing station, a tablet pressing station between the upper pressure head and the lower pressure head, and a wiping station.

6. The multi-material automatic pressing machine according to claim 5, characterized in that: The cantilevered cup conveying rail of the sample cup conveying assembly (7) is supported on a base frame, and the sample cup lifting device comprises a cup conveying block with a sample cup platform mounted on the top.

7. The multi-material automatic pressing machine according to claim 6, characterized in that: The upper end of the vertical axis of the bottom rotary cylinder of the ring grabbing assembly is connected to a rotating arm, and a downward sample ring air gripper is installed at the cantilever end of the rotating arm. The sample ring air gripper has a ring taking station and a ring placing station on the same arc.

8. The multi-material automatic pressing machine according to claim 2, characterized in that: A ring moving platform is mounted on the bottom bracket of the upper ring assembly. A ring cylinder for placing a whole stack of sample rings is arranged at one end of the ring moving platform, and a ring outlet is arranged at the other end. A top ring cylinder is mounted at the lower part of the ring outlet.

9. The multi-material automatic pressing machine according to claim 4, characterized in that: The wiping assembly is arranged at the wiping station corresponding to the swing arm of the pressing assembly, and the upper part of the mounting plate is equipped with a driven reel for placing the dust-free paper roll; an inverted T-shaped winding wheel group is installed below the driven reel, wherein the upper left and right rubber-coated rollers are respectively tangent to the lower pressure roller; a wiping unit is installed below the winding wheel group through a lifting cylinder, and the wiping unit consists of a flat-bottomed wiping block and guide rods respectively located on both sides of the wiping block, and the wiping block and the mounting plate form a vertical moving pair.

10. The multi-material automatic pressing machine according to claim 9, characterized in that: An active reel is installed on one side of the wiping unit, a meter is installed on the installation plate, and a sensor wheel of the meter is tangent to a steering rod installed on the belt winding path.

Images