CN211730380U

CN211730380U - Novel powder tablet press

Info

Publication number: CN211730380U
Application number: CN202020011315.7U
Authority: CN
Inventors: 陈育明
Original assignee: Liming Vocational University
Current assignee: Liming Vocational University
Priority date: 2020-01-04
Filing date: 2020-01-04
Publication date: 2020-10-23
Anticipated expiration: 2030-01-04

Abstract

The utility model relates to the field of tablet presses, in particular to a novel powder tablet press, which comprises a die, a cavity, a bottom die and a top die, wherein the cavity is arranged inside the die, the bottom die matched with the cavity is arranged in the cavity in a sliding way, and the top die can cover on one side end surface of the die far away from the bottom die in a sliding way, the utility model has the advantages that when powder is processed and extruded, compared with the traditional powder tablet press, the top die and the bottom die are moved out firstly when discharging, then, other devices such as a cylinder and other push-out molding powder tablets are used, the bottom die is driven to move repeatedly by continuous action of a crank and a connecting rod, when the bottom die moves for the first time, the powder is compressed to form a tablet, when the bottom die moves for the second time, the push-out tablet completes discharging, the bottom die moves repeatedly for two times to form, the operation is more convenient, and the production efficiency is greatly improved.

Description

Novel powder tablet press

Technical Field

The utility model relates to a tablet press field especially indicates a novel powder tablet press.

Background

The tablet press is a machine for pressing dry granular or powdery materials into tablets through a die, the tablet press is continuously developed and improved along with the continuous progress of science and technology, the production and application of the tablets are rapidly developed, the tablet press becomes one of the most widely used medicament dosage forms in clinical practice at present, the tablet press plays an important role in the production of preparations in various countries in the world, the tablet press is the most key and important equipment for the production of the tablets, the conventional technology is not considered comprehensively, and the tablet press has the following defects:

when the traditional powder tablet press is used for discharging, the top die and the bottom die need to be moved out firstly, and then the powder tablet press formed by ejection is pushed out by other equipment such as an air cylinder and the like, so that the processing steps are old and complicated, the operation is complex, and the production efficiency is low.

Disclosure of Invention

The utility model provides a novel powder tablet press to overcome the old loaded down with trivial details of processing step of the traditional powder tablet press of prior art, the operation is complicated, problem that production efficiency is low.

The utility model adopts the following technical scheme: the utility model provides a novel powder tablet press, including mould, die cavity, die block and top mould, the inside of mould is equipped with the die cavity, and slidable installs the die block of looks adaptation with it in the die cavity, and top mould slidable covers on the mould keeps away from a side end face of die block, still including the sheeting mechanism who is connected with the die block, sheeting mechanism includes connecting rod, crank, spout, slider, spring and pivot, the rotatable die block that is connected with of one end of connecting rod, the other end of connecting rod is rotatable installs on the slider surface, and slider slidable installs in the spout, and articulate inside is located to the spout, in the spring was fixed in the spout, the both ends of spring were connected with crank and slider respectively, the rotatable installation in the pivot outside of the one end that the slider was.

As further improvement, be equipped with the forked tail tenon on the side surface that the mould is close to the die cavity, the mould is close to one side surface of top mould on be equipped with the forked tail mortise of forked tail tenon looks adaptation, the forked tail tenon slidable inlays in the forked tail mortise.

As a further improvement, the top of the top die is connected with an air cylinder, the air cylinder is installed on a portal frame, and the portal frame is fixed on the upper surface of the workbench.

As a further improvement, limiting blocks are fixed on two sides of the sliding block, limiting grooves matched with the limiting blocks are formed in the crank, and the limiting blocks are slidably installed in the limiting grooves.

As a further improvement, the surfaces of the sliding block and the crank are respectively provided with a hanging ring, the two ends of the spring are in a hook shape, and the hanging rings are respectively hooked by the hooks at the two ends of the spring.

As a further improvement, one end of the mold close to the bottom mold is provided with a yielding groove matched with the connecting rod, the connecting rod is slidably arranged in the yielding groove, and the left side of the bottom mold still covers the upper left side of the yielding groove when the bottom mold is positioned at the rightmost side of the cavity.

From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages: when processing extrusion powder, compare in traditional powder tablet press and will shift out top mould and die block earlier when the ejection of compact, then reuse other equipment for example cylinder etc. ejection fashioned powder preforming, it is direct to drive the die block through crank and connecting rod sustained action and move repeatedly, it compresses the powder and forms the preforming when the die block first removes, it accomplishes the ejection of compact to be ejecting preforming when the die block second removes, the die block removes twice formation cycle repeatedly, make the preforming processing step to the powder simpler, the operation is more convenient, and the production efficiency is greatly improved.

Drawings

Fig. 1 is a front view structure diagram of the present invention.

Fig. 2 is a schematic perspective view of the mold, bottom mold, top mold and connecting rod.

Fig. 3 is a front view of the tablet pressing mechanism.

Fig. 4 is a perspective view of the crank.

Fig. 5 is a schematic top view of the mold and the top mold.

FIG. 6 is a schematic view showing the structure of the first movement of the bottom die to squeeze the powder.

Fig. 7 is a schematic view of the spring compression structure during the first movement of the bottom mold.

Fig. 8 is a schematic structural view of the first movement return stroke of the bottom mold.

FIG. 9 is a schematic view of the second movement of the bottom mold to push out the powder compact.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

As shown in fig. 1 to 9, a novel powder tablet press comprises a die 2, a cavity 4, a bottom die 5 and a top die 6, wherein the cavity 4 is arranged inside the die 2, the bottom die 5 matched with the cavity 4 is slidably arranged in the cavity 4, and the top die 6 slidably covers the end surface of the die 2, which is far away from the bottom die 5.

As shown in fig. 2 to 4, the die pressing device further includes a pressing mechanism 7 connected to the bottom die 5, the pressing mechanism 7 includes a connecting rod 71, a crank 72, a sliding slot 73, a slider 74, a spring 75, and a rotating shaft 710, one end of the connecting rod 71 is rotatably connected to the bottom die 5, the other end of the connecting rod 71 is rotatably mounted on the surface of the slider 74, the slider 74 is slidably mounted in the sliding slot 73, the sliding slot 73 is disposed inside the crank 72, the spring 75 is fixed in the sliding slot 73, two ends of the spring 75 are respectively connected to the crank 72 and the slider 74, one end of the crank 72 away from the slider 74 is rotatably mounted on the outer side of the rotating shaft 710, the rotating shaft 710 is connected to a motor shaft of the motor 76, the motor 76 is fixed. After the powder feeding is finished, the motor 76 is started to enable the crank 72 and the connecting rod 71 to continuously act to drive the bottom die 5 to move along the cavity 4, the powder in the cavity 4 is pushed to move to the surface of the top die 6 to begin to be extruded, when the extrusion force exceeds the pre-tightening force of the spring 75 in the crank 72, the slide block 74 starts to move along the sliding groove 73 to compress the spring 75, as shown in fig. 7, the bottom die 5 keeps still to continuously compress the powder to form a pressure maintaining state, when the extrusion force of the bottom die 5 on the powder begins to decrease, the spring 75 begins to extend under the action of elastic restoring force to outwardly push the slide block 74 to restore the original state, then the bottom die 5 returns, then the powder tabletting is completed, as shown in fig. 8, after the bottom die 5 leaves the tabletting of the molded powder, the top die 6 moves upwards, the opening of the cavity 4 is opened, at this time, the powder tablet can be smoothly pushed out of the cavity 4 from the mouth of the cavity by the bottom die 5 without being subjected to the resistance of the top die 6 to drop into the storage box 9 to complete the discharging, as shown in fig. 9, when the discharging bottom die 5 returns again, the top die 6 moves downward to block the mouth of the cavity 4 again, then the powder is poured into the storage box from the feed inlet 3, and the operation is repeated, so as to realize the batch processing, compared with the conventional powder tablet machine which moves out the top die 6 and the bottom die 5 first during the discharging process, and then uses another device such as an air cylinder to eject the molded powder tablet, the bottom die 5 is directly driven to move repeatedly by the continuous action of the crank 72 and the connecting rod 71, when the bottom die 5 moves for the first time, the powder is compressed to form the tablet, when the bottom die 5 moves for the second time, the tablet is ejected to complete the discharging, and the bottom die 5 moves twice repeatedly, the operation is more convenient, and the production efficiency is greatly improved.

As shown in the attached drawing 5, be equipped with the dovetail 86 on the side surface that top mould 6 is close to die cavity 4, mould 2 is close to one side of top mould 6 on the surface be equipped with the dovetail 87 of dovetail 86 looks adaptation, dovetail 86 slidable inlays in dovetail 87, utilize dovetail 87 to the limiting displacement of dovetail 86, guarantee that top mould 6 can paste 2 terminal surfaces of mould and reciprocate, improve the stationarity of top mould 6 in the use removal process, strengthen the compactness that top mould 6 is connected with mould 2 simultaneously, reduce the probability that the limit joint appears in the powder preforming after the shaping, avoid die block 5 ejecting out the shaping that influences the powder in die cavity 4 to the top mould 6 that blocks up die cavity 4 when the extrusion powder.

As shown in fig. 1, the top of the top die 6 is connected with a piston of an air cylinder 8, the air cylinder 8 is installed on a portal frame 10, the portal frame 10 is fixed on the upper surface of the workbench 1, and the piston of the air cylinder 8 drives the top die 6 to move along the end surface of the die 2 so as to block or open the cavity opening of the cavity 4, thereby ensuring the molding of powder and the discharging of molded powder tablets.

As shown in fig. 4, two sides of the sliding block 74 are fixed with a limiting block 74, the crank 72 is provided with a limiting groove 742 adapted to the limiting block 74, the limiting block 74 is slidably mounted in the limiting groove 742, and the limiting block 74 is prevented from deviating or sliding out of the sliding groove 73 in the forced moving process by the limiting effect of the limiting groove 742 on the limiting block 74, so that the limiting block 74 can accurately move the compression spring 75 along the sliding groove 73 to form a pressure maintaining state.

As shown in fig. 4, the surface of the slider 74 and the surface of the crank 72 are respectively provided with a hanging ring 79, two ends of the spring 75 are in a hook shape, the hooks at two ends of the spring 75 respectively hook the hanging rings 79, the arrangement of the hanging rings 79 facilitates the replacement of the springs 75 with different elastic coefficients, the molding of powders with different molding pressures can be satisfied by replacing the springs 75 with different elastic coefficients, when the molding pressure required by the powder molding is higher, the spring 75 with a higher elastic coefficient is replaced, the spring 75 is not easily compressed, so that the extrusion force of the bottom die 5 on the powders is larger to facilitate the powder molding, otherwise, the spring 75 with a lower elastic coefficient is used, thereby expanding the application range of the powder tablet press.

As shown in fig. 2, one end of the mold 2 close to the bottom mold 5 is provided with a yielding groove 78 matched with the connecting rod 71, the connecting rod 71 is slidably arranged in the yielding groove 78, and the connecting rod 71 is prevented from colliding with the mold 2 in the rotating use process to damage the mold 2 and the connecting rod 71, so that the integrity of the connecting rod 71 and the mold 2 is protected, the left side of the bottom mold 5 still covers the upper left side of the yielding groove 78 when the bottom mold 5 is positioned at the rightmost side of the cavity 4, the yielding groove 78 is blocked by the bottom mold 5, and the situation that powder poured into the cavity 4 from the feeding port 3 falls from the yielding groove 78 to reduce the amount of the powder and cannot be molded is avoided.

When powder is processed, a certain amount of powder is poured into the cavity 4 from the feeding hole 3 through the electric valve 12 on the feeding hopper 11, after the powder feeding is finished, the motor 76 is started, the motor 76 drives the crank 72 and the connecting rod 71 to continuously operate, the bottom die 5 moves along the cavity 4 under the driving of the crank 72 and the connecting rod 71 to push the powder in the cavity 4 to move to the surface of the top die 6 to start extrusion, after the powder in the cavity 4 is basically formed, the bottom die 5 continues to extrude the powder under the action of the crank 72 and the connecting rod 71, when the extrusion force exceeds the pre-tightening force of the spring 75 in the crank 72, the slide block 74 starts to move the compression spring 75 along the chute 73, as shown in fig. 7 in detail, at this time, the bottom die 5 keeps a state of continuously compressing the powder to form, the powder tablet is promoted to be formed, the powder is prevented from being not tight enough due to short compression time, when the extrusion force of the bottom die 5 on the powder begins to decrease, the spring 75 begins to extend under the action of the elastic restoring force to push the slider 74 outwards to restore the original shape, then the crank 72 and the connecting rod 71 continue to rotate to drive the bottom die 5 to return, and at this time, powder tabletting is completed, specifically as shown in fig. 8, when the crank 72 and the connecting rod 71 continue to rotate to drive the bottom die 5 to leave the formed powder tabletting, then the top die 6 and the dovetail 86 move upwards along the dovetail groove 87 under the drive of the cylinder 8 to open the cavity opening of the cavity 4, thereby prolonging the pressure maintaining time of the powder tabletting, ensuring the forming quality of the powder tabletting, avoiding that the powder tabletting directly falls from the cavity opening of the opened cavity 4 under the action of the extrusion force of the bottom die 5 due to too early moving of the top die 6 and has insufficient pressure maintaining time, affecting the forming quality of the powder tabletting, and then the bottom die 5 approaches the formed powder tabletting again under the, at this time, the powder tablet can be smoothly pushed out of the cavity 4 from the mouth of the cavity by the bottom die 5 without being subjected to the resistance of the top die 6 to drop into the storage box 9 to complete the discharging, as shown in fig. 9, when the discharging bottom die 5 returns again, the top die 6 moves downward to block the mouth of the cavity 4 again, then the powder is poured into the storage box from the feed inlet 3, and the operation is repeated, so as to realize the batch processing, compared with the conventional powder tablet machine which moves out the top die 6 and the bottom die 5 first during the discharging, and then uses another device such as an air cylinder to push out the formed powder tablet, the crank 72 and the connecting rod 71 continuously rotate to drive the bottom die 5 to move repeatedly, when the bottom die 5 moves for the first time, the powder is compressed to form the tablet, when the bottom die 5 moves for the second time, the tablet is pushed out to complete the discharging, and the bottom die 5 moves repeatedly twice to form, the operation is more convenient, and the production efficiency is greatly improved.

The above-mentioned be the utility model discloses a concrete implementation way, nevertheless the utility model discloses a design concept is not limited to this, and the ordinary use of this design is right the utility model discloses carry out immaterial change, all should belong to the act of infringement the protection scope of the utility model.

Claims

1. The utility model provides a novel powder tablet press, including mould, die cavity, die block and top mould, the inside of mould is equipped with the die cavity, and slidable installs the die block of looks adaptation with it in the die cavity, and top mould slidable covers on the mould keeps away from a side end face of die block, its characterized in that: still including the sheeting mechanism who is connected with the die block, sheeting mechanism includes connecting rod, crank, spout, slider, spring and pivot, the rotatable die block that is connected with of one end of connecting rod, the rotatable installation in the slider surface of the other end of connecting rod, slider slidable install in the spout, and articulate inside is located to the spout, the spring is fixed in the spout, and the both ends of spring are connected with crank and slider respectively, the rotatable installation in the pivot outside of the one end that the slider was kept away from to the crank.

2. A novel powder tablet press as claimed in claim 1, wherein: the die is characterized in that one side surface of the top die close to the die cavity is provided with a dovetail, one side surface of the die close to the top die is provided with a dovetail groove matched with the dovetail, and the dovetail is embedded in the dovetail groove in a sliding manner.

3. A novel powder tablet press as claimed in claim 1, wherein: the top of the top die is connected with an air cylinder, the air cylinder is installed on a portal frame, and the portal frame is fixed on the upper surface of the workbench.

4. A novel powder tablet press as claimed in claim 1, wherein: the both sides of slider are fixed with the spacing piece, are equipped with the spacing groove with spacing piece looks adaptation on the crank, and the spacing piece slidable installs in the spacing inslot.

5. A novel powder tablet press as claimed in claim 1, wherein: the surfaces of the sliding block and the crank are respectively provided with a hanging ring, the two ends of the spring are in a hook shape, and the hooks at the two ends of the spring respectively hook the hanging rings.

6. A novel powder tablet press as claimed in claim 1, wherein: one of the end of the mold close to the bottom mold is provided with a yielding groove matched with the connecting rod, the connecting rod can be slidably arranged in the yielding groove, and the left side of the bottom mold still covers the upper left side of the yielding groove when the bottom mold is positioned on the rightmost side of the cavity.