Powder material tabletting and sample preparation device

Abstract

The utility model provides a powdery material tabletting and sample preparation device, and relates to the technical field of tabletting. A mounting frame is arranged on the mounting base, a pressing disc is slidably arranged on the mounting frame in the vertical direction, a main pressing mold is arranged on the mounting frame, a pressing cavity matched with the pressing disc is formed in the main pressing mold, and a releasing assembly used for releasing pressing pressure is arranged in the pressing cavity. A driving piece for driving the pressing disc to be arranged in the pressing cavity is arranged on the mounting frame; the release assembly can avoid the situation that the pressing disc applies large pressure to the powder material at the beginning, and consequently powder with small density is prone to scattering under the impact of the pressure, and can also apply counter-acting force to the cake-shaped sample piece, so that the cake-shaped sample piece protrudes out of the pressing cavity, and the sample piece can be conveniently taken out of the main pressing mold in the later period.

Description

TECHNICAL FIELD

[0001] The utility model relates to tabletting technical field, specifically, relate to a kind of powder material tabletting sample preparation device. BACKGROUND

[0002] Powder tabletting is one of the sample preparation methods for X-ray fluorescence spectroscopy analysis, specifically, the powder filled into powder tabletting mold after drying, grinding and mixing uniformly, then the sample tablet is pressed using the press process. And powder tabletting forming requires large pressure, slow speed, so as to facilitate the gas discharge between powder molecular gap and overall forming;But powder tabletting machine does not have buffering property when tabletting, and the powder with small density is easy to scatter under the impact of pressure, which causes the increase of economic cost;There is also a problem that powder flows in the mold when being pressed, so that the sample tablet and the powder tabletting mold cavity are combined tightly in the compaction process, and the mold is difficult to be removed. UTILITY MODEL CONTENT

[0003] The utility model aims at providing a kind of powder material tabletting sample preparation device, which can solve the problems raised in the background art.

[0004] The technical scheme of the utility model is realized as follows:

[0005] The utility model provides a kind of powder material tabletting sample preparation device, including installation base, installation base is equipped with mounting bracket, mounting bracket is equipped with pressing disc along vertical direction slidingly, mounting bracket is equipped with main pressing mold, main pressing mold is equipped with the pressing chamber that is adapted with pressing disc in, releasing assembly is equipped in pressing chamber for releasing pressing pressure, mounting bracket is equipped with the driving piece for driving pressing disc to be placed in pressing chamber.

[0006] In some technical schemes of the utility model, the driving piece includes first push rod installed on mounting bracket, and the telescopic end of the first push rod is connected with the pressing disc.

[0007] In some technical schemes of the utility model, pressing disc is equipped with pressing ring in pressing chamber.

[0008] In some technical schemes of the utility model, the side wall opposite to main pressing mold of pressing disc is equipped with installation port, and vice pressing mold is equipped in installation port slidingly, and a plurality of through holes are equipped around the side wall of main pressing mold, and second push rod is installed in through hole, and the telescopic end of second push rod is connected with vice pressing mold.

[0009] In some technical schemes of the utility model, the releasing assembly comprises a guide cylinder slidingly arranged in the pressing chamber, the mounting base is provided with a mounting cylinder, a guide rod is slidingly arranged in the mounting cylinder, an oblique hole is formed in the sidewall of the guide rod, the axis of the oblique hole intersects with the axis of the guide rod, the included angle between the two is an acute angle, a connecting rod is slidingly arranged in the oblique hole, the two ends of the connecting rod are provided with first limiting blocks, the sidewalls of the two first limiting blocks away from each other are provided with first inclined surfaces, and the inner wall of the guide cylinder is provided with second limiting blocks corresponding to the two first limiting blocks respectively.

[0010] In some technical schemes of the utility model, a guide hole matched with the guide rod is formed in the mounting cylinder.

[0011] In some technical schemes of the utility model, a guide groove is formed in the oblique hole along the circumferential direction, and a guide strip connected with the connecting rod is slidingly arranged in the guide groove.

[0012] Compared with the prior art, the utility model has at least the following advantages or beneficial effects:

[0013] The releasing assembly can avoid that the pressing disc exerts a large pressure on the powder material at the beginning, so that the powder material with small density is easily scattered under the impact of the pressure, and the problems such as that the surface of the sample piece in the form of a round cake is not full, and that there are gaps in the inside, etc. are caused. The releasing assembly provided can exert a reaction force on the sample piece in the form of a round cake after the pressing disc does not exert a downward pressure on it, so that the sample piece in the form of a round cake protrudes out of the pressing chamber, and the sample piece can be conveniently taken out from the main pressing mold in the later period. The mounting frame is provided with a driving piece for driving the pressing disc to be arranged in the pressing chamber. The driving piece can exert a downward pressure on the pressing disc and act on the powder material, so that the powder material is pressed into a round cake in the pressing chamber, and the quality of the sample piece is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical schemes of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of the drawings.

[0015] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0016] Figure 2 It is a side view structure schematic view of the utility model;

[0017] Figure 3It is the expansion combination structure schematic view of the release assembly in the utility model.

[0018] Figure 4 It is the section structure schematic view of the release assembly in the utility model.

[0019] Figure 5 It is the compression state structure schematic view of the release assembly in the utility model.

[0020] Icon: 1, mounting base; 2, mounting frame; 3, first push rod; 14, pressing disc; 5, main pressing mold; 6, guide cylinder; 7, mounting cylinder; 8, guide hole; 9, first limit block; 10, connecting rod; 11, guide rod; 12, reset spring; 13, second limit block; 14, tablet pressing ring; 15, second push rod; 16, auxiliary pressing mold; 17, guide strip. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the utility model.

[0023] EMBODIMENT

[0024] Please refer to Figures 1-5 .

[0025] The utility model provides a kind of powder material tabletting sample preparation device, such as Figure 1 、 Figure 2As shown, including the mounting base 1, the mounting base 1 is a whole table structure, its material is metal material, the mounting base 1 is fixed with mounting frame 2 by bolt, the mounting frame 2 is slidably provided with pressing disc 4 along the vertical direction, the pressing disc 4 is steel metal material, can increase its wear resistance, the mounting frame 2 is fixed with main pressing die 5 through support, the support is fixed on the mounting frame 2 by bolt, so according to the actual actual demand to the installation height of main pressing die 5 is adjusted, the main pressing die 5 is provided with pressing chamber that is adapted to pressing disc 4, it is convenient for pressing disc 4 to be pressed into a round cake shape in the powder material that is opposed in main pressing die 5, and the cross section of the pressing chamber in main pressing die 5 is circular, the release assembly for releasing the pressure of pressing chamber is provided in the pressing chamber, avoids that pressing disc 4 initially applies larger pressure to powder material, causes that the powder with smaller density is easy to scatter under the impact of pressure, causes the surface of the sample piece in round cake shape to be not full, there is gap inside and other problems;And the release assembly is set, after not being applied to the pressure of pressing disc 4, it can apply a counterforce to the sample piece in round cake shape, so that the sample piece in round cake shape protrudes from the pressing chamber, it is convenient for the sample piece to be taken out from main pressing die 5 later, the driving part for driving the pressing disc 4 to be placed in the pressing chamber is arranged on the mounting frame 2, the driving part can apply the pressure of pressing disc 4 and act on powder material, so that the powder material is pressed into a round cake shape in the pressing chamber to facilitate later detection test, improve the quality of sample piece.

[0026] In some technical solutions of the utility model, the driving part includes first push rod 3 installed on mounting frame 2, first push rod 3 is hydraulic push rod, the body of first push rod 3 is fixed on the top of mounting frame 2 by bolt, the telescopic end of first push rod 3 is connected with pressing disc 4 through connecting seat. In this way, first push rod 3 can directly act on pressing disc 4 with a pushing force, ensuring that pressing disc 4 can press the powder material placed in the pressing chamber into a qualified round cake-shaped sample piece.

[0027] In some technical solutions of the utility model, tablet pressing ring 14 is slidably arranged in the pressing chamber. This avoids the powder material placed in the pressing chamber from directly contacting the inner side wall of main pressing die 5 during the pressing process, thereby preventing the sample piece from being tightly combined with the pressing chamber in main pressing die 5 and causing the problem of difficult ejection.

[0028] In some technical schemes of the utility model, the opposite side wall of the pressing disc 4 and the main pressing die 5 is provided with a mounting port, a vice pressing die 16 is slidably arranged in the mounting port, and the vice pressing die 16 can be arranged in the tablet pressing ring 14, so that the sample tablet is more stable in forming; a plurality of through ports are arranged around the side wall of the main pressing die 5, a second push rod 15 is arranged in each through port through a female thread sleeve, and the telescopic end of the second push rod 15 is connected with the vice pressing die 16 through a bolt; the second push rod 15 can be matched with the first push rod 3 to make the powder into qualified sample tablets.

[0029] The first push rod 3 is arranged to make the powder in the pressing disc 4 be first pressed and formed; in order to improve the forming quality of the sample tablet, the powder is secondly pressed by the second push rod 15, so that the compactness of the powder after being pressed and formed is improved again, and the quality of the sample tablet is ensured.

[0030] In some technical schemes of the utility model, the releasing assembly comprises a guide cylinder 6 slidably arranged in the pressing chamber, an installation cylinder 7 is arranged on the installation base 1, a guide rod 11 is slidably arranged in the installation cylinder 7, an inclined hole is arranged on the side wall of the guide rod 11, the axis of the inclined hole intersects with the axis of the guide rod 11, the included angle between the two is an acute angle, a connecting rod 10 is slidably arranged in the inclined hole, the two ends of the connecting rod 10 are provided with first limiting blocks 9 which are integrally formed with the connecting rod 10, first inclined surfaces are arranged on the side walls of the two first limiting blocks 9 which are away from each other, second limiting blocks 13 which are one-to-one corresponding to the two first limiting blocks 9 are arranged on the inner wall of the guide cylinder 6, and the second limiting blocks 13 are welded on the inner wall of the guide cylinder 6; second inclined surfaces which are matched with the first inclined surfaces are arranged on the side walls of the second limiting blocks 13; and a return spring which is connected with the inner wall of the guide cylinder 6 is arranged on the guide rod 11.

[0031] The working principle of the release assembly is that when the telescopic end of the first push rod 3 gradually extends into the body, the pressing disc 4 connected with the first push rod 3 will gradually move towards the main pressing die 5, at this time, the pressing disc 4 will gradually enter the pressing chamber in the main pressing die 5 and contact the top of the tablet pressing ring 14 and apply a pushing force to the guide cylinder 6 in the pressing chamber; one of the second limiting blocks 13 in the guide cylinder 6 will apply a pushing force to the first limiting block 9 connected with the second limiting block 13, so as to force the guide rod 11 slidingly arranged in the inclined hole to move in the radial direction of the guide cylinder 6; at this time, the first limiting block 9 applied with the pushing force of the second limiting block 13 will gradually approach the outer side wall of the guide rod 11, at this time, the guide rod 11 will move upward in the vertical direction under the extrusion of the above structure and force the guide cylinder 6 to compress the reset spring 12; when the force applied to the guide cylinder 6 gradually disappears, the reset spring 12 will force the guide cylinder 6 and the guide rod 11 to move away from each other, so that the stability of the powder moving downward in the vertical direction along with the guide cylinder can be ensured through the above structure; the air between the pressing disc and the powder can be exhausted in advance, so that the pressing disc 4 does not apply a large pressure to the powder material at the beginning, the powder with small density is prevented from flying under the impact of the pressure, the surface of the sample tablet in the form of a round cake is prevented from being not full and gaps existing in the inside, and the reset spring 4 can apply a counterforce to the guide cylinder 6 and the sample tablet in the form of a round cake after the pressing disc 4 does not apply a downward pressure, so that the sample tablet in the form of a round cake protrudes out of the pressing chamber under the action of the guide cylinder 6, and the sample tablet can be taken out of the main pressing die 5.

[0032] In some technical solutions of the present application, the guide hole 8 matched with the guide rod 11 is formed in the mounting cylinder 7, which is used for guiding and limiting the movement of the guide rod 11 in the vertical direction and preventing the guide rod 11 from rotating.

[0033] In some technical solutions of the present application, the guide groove is formed in the inclined hole in the circumferential direction, and the guide strip 17 fixedly connected with the connecting rod 10 is slidingly arranged in the guide groove. The connecting rod 10 is prevented from rotating when moving obliquely in the guide groove.

[0034] The above is only the preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for tabletting a powdered material for sampling, characterized in that The application relates to a tablet pressing device, which comprises a mounting base (1) provided with a mounting frame (2), a pressing disc (4) slidingly arranged on the mounting frame (2) in the vertical direction, a main pressing die (5) provided on the mounting frame (2) and provided with a pressing cavity matched with the pressing disc (4), a releasing assembly arranged in the pressing cavity and used for releasing pressing pressure, and a driving piece arranged on the mounting frame (2) and used for driving the pressing disc (4) to be arranged in the pressing cavity.

2. A device for tabletting and sampling of a powdery material according to claim 1, characterized in that The driving piece comprises a first push rod (3) mounted on the mounting frame (2) and connected with the pressing disc (4) at the telescopic end.

3. A device for tabletting and sampling of a powdery material according to claim 1, characterized in that A tablet pressing ring (14) is slidingly arranged in the pressing cavity.

4. A device for tabletting and sampling of a powdery material according to claim 2, characterized in that An installation opening is formed in the side wall of the pressing disc (4) opposite to the main pressing die (5), a secondary pressing die (16) is slidingly arranged in the installation opening, a plurality of through holes are formed in the side wall of the main pressing die (5) in a surrounding mode, and a second push rod (15) is arranged in each through hole.

5. A device for tabletting and sampling of a powdery material according to any one of claims 1-4, characterized in that The releasing assembly comprises a guide cylinder (6) slidingly arranged in the pressing cavity, a mounting cylinder (7) mounted on the mounting base (1), a guide rod (11) slidingly arranged in the mounting cylinder (7), an oblique hole formed in the side wall of the guide rod (11) and having an acute angle with the axis of the guide rod (11), a connecting rod (10) slidingly arranged in the oblique hole, first limiting blocks (9) arranged at the two ends of the connecting rod (10), first inclined surfaces formed in the side walls of the two first limiting blocks (9) and away from each other, second limiting blocks (13) arranged on the inner wall of the guide cylinder (6) and corresponding to the two first limiting blocks (9), second inclined surfaces formed in the side walls of the second limiting blocks (13) and matched with the first inclined surfaces, and a return spring arranged on the guide rod (11) and connected with the inner wall of the guide cylinder (6).

6. A device for tabletting and sampling of a powdery material according to claim 5, characterized in that An oblique hole matched with the guide rod (11) is formed in the mounting cylinder (7).

7. A device for tabletting and sampling of a powdery material according to claim 5, characterized in that A guide groove is formed in the oblique hole in the circumferential direction, and a guide strip (17) connected with the connecting rod (10) is slidingly arranged in the guide groove.

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