Single-punch tablet press for powder

Abstract

The utility model relates to the technical field of tablet pressing of tablet health food, in particular to a powder single-punch tablet press which comprises a supporting table, a middle die arranged on the supporting table, a lower punch sleeved with the middle die, an upper punch arranged above the middle die, a motor driving the upper punch to move vertically and a supporting shell arranged between the motor and the supporting table. A feeding hopper is arranged above the supporting table, a guiding hopper is obliquely arranged between the feeding hopper and the supporting table, the top end of the guiding hopper is installed above the feeding hopper, the bottom end of the guiding hopper is located between the upper punch and the lower punch, the bottom end of the guiding hopper makes contact with the top face of the supporting table, and a punching hopper is arranged between the upper punch and the guiding hopper. The bottom end of the punching hopper is installed on the guide hopper, the punching hopper and the feeding hopper are respectively communicated with the guide hopper, the diameter of an inner cavity of the punching hopper is not smaller than that of the upper punch, a hinged shaft is arranged below the feeding hopper, and the top end of the hinged shaft is installed on the guide hopper. The utility model provides a powder single-punch tablet press which is used for preventing powder in a middle die from being scraped and reducing pollution to a processing environment.

Description

Technical Field

[0001] The utility model relates to the technical field of tabletting of health-care food tablets, in particular to a powder material single-punch tabletting machine. Background Art

[0002] Health food is a food with specific health functions or for the purpose of supplementing vitamins and minerals. Health food can not only regulate the body's functions, but also prevent and enhance immunity, while also providing necessary nutrients. Tablet health food is a kind of health food. Tablets are obtained by pressing powders with fluidity, compressibility and lubricity. Because tablet health food has the advantages of stable quality and easy to carry, tablet health food is very popular. For the production of tablet health food, tablet health food needs to use a tablet press to press the powder into tablets during production. According to the different mechanical structures of the tablet press, it can be divided into single-punch tablet press and multi-punch tablet press. Among them, the single-punch tablet press has the advantages of small size, low price, light weight of the whole machine, and easy operation, making the single-punch tablet press suitable for laboratory and small-batch, multi-variety tablet trial production.

[0003] The single punching tablet equipment is equipped with a set of punch dies, which work together with the eccentric wheel and the cam mechanism. During one rotation, the filling, tableting and discharging operations can be completed in sequence. At the beginning of the work, the upper punch is raised first, the bottom of the feeding hopper is moved to the top of the middle die, and the lower punch is lowered to an appropriate position. Subsequently, the powder is added to the middle die through the feeding hopper, so that the powder falls on the lower punch, thereby completing the filling operation. Next, the bottom end of the feeding hopper is removed, and the upper punch is controlled to move toward the lower punch, so that the upper punch enters the middle die and presses the powder in the middle die, thereby pressing the powder in the middle die into tablets, thereby completing the tableting operation. After the punching is completed, the upper punch rises, and the lower punch rises accordingly to push the tablet above the middle die, and then the bottom end of the feeding hopper is controlled to return to the top of the middle die, thereby pushing the tablet into the discharging trough, thereby completing the discharging operation. The feeding hopper is used again to add powder to the middle die, thereby repeating the processing operation of tablet health food. However, during the filling, tableting and tableting process, the bottom of the hopper needs to rotate frequently, which may cause the powder on the top of the middle die to be scraped out, thus affecting the quality of tablet health products; and the powder remaining at the bottom of the hopper will be brought to the work surface as the bottom of the hopper rotates, thereby contaminating the work surface. In addition, the hopper that returns to the top of the middle die will also carry the remaining powder into the middle die, thus affecting the tableting again. Therefore, there is room for improvement in the filling and tableting operations of the single-punch tablet press to improve the tablet processing quality and reduce the pollution to the workbench. Summary of the invention

[0004] In view of the deficiencies in the prior art, the utility model provides a powder single punch tablet press which can prevent the powder in the middle die from being scraped off and reduce the pollution of the processing environment, so as to overcome the defects in the prior art.

[0005] The technical solution adopted by the utility model is a single-punch tablet press for powder materials, comprising a support platform, a middle die arranged on the support platform, a lower punch fitted in the middle die, an upper punch arranged above the middle die, a motor for driving the upper punch to move vertically, and a support shell arranged between the motor and the support platform. A feeding hopper is arranged above the support platform, a guide hopper is arranged obliquely between the feeding hopper and the support platform, the top end of the guide hopper is installed above the feeding hopper, the bottom end of the guide hopper is located between the upper punch and the lower punch, the bottom end of the guide hopper contacts the top surface of the support platform, a punching hopper is arranged between the upper punch and the guide hopper, the bottom end of the punching hopper is installed on the guide hopper, the punching hopper and the feeding hopper are respectively connected with the guide hopper, the inner cavity diameter of the punching hopper is not less than the diameter of the upper punch, a hinge shaft is arranged below the feeding hopper, the top end of the hinge shaft is installed on the guide hopper, and the hinge shaft is hinged on the support platform.

[0006] Preferably, a sleeve hole is provided on the support platform, the hinge shaft is sleeved in the sleeve hole, a spring is provided below the sleeve hole, the spring is sleeved on the hinge shaft, a disc is provided at the bottom end of the spring, the top surface of the disc is installed on the bottom end of the hinge shaft, both sides of the spring are in contact with the support platform and the disc respectively, and the bottom end of the guide hopper is pressed against the top surface of the support platform by the spring.

[0007] Preferably, the hinge shaft is provided with a clamp, which is located above the support platform, a fixed plate is provided on one side of the clamp, the fixed plate is installed on the clamp, a slide groove is provided on the fixed plate, a pin is movably provided in the slide groove, the diameter of the pin matches the groove width of the slide groove, a telescopic cylinder is provided on one side of the pin, the pin is installed on the telescopic rod of the telescopic cylinder, and the telescopic cylinder is installed on the support platform between the support shell and the feeding hopper.

[0008] Preferably, the motor is horizontally mounted on a support shell, the support shell is mounted on the top surface of the support platform, the motor's shaft is rotatably mounted in the support shell, an eccentric wheel is provided at the end of the motor's shaft away from the motor, the center line of the eccentric wheel is located on one side of the center line of the motor's shaft, a pressure shaft is vertically arranged on the eccentric wheel, a pressure groove is provided on one side of the pressure shaft, the eccentric wheel is movably mounted in the pressure groove, the diameter of the eccentric wheel matches the groove height of the pressure groove, a limiting hole is provided on the support shell, the pressure shaft is movably mounted in the limiting hole, the diameter of the pressure shaft matches the aperture of the limiting hole, and the upper punch is mounted on the bottom end of the pressure shaft.

[0009] Preferably, a transmission wheel is mounted on the rotating shaft of the motor, and the transmission wheel is installed on the rotating shaft of the motor. A convex ring groove is provided on one side of the transmission wheel, and one side of the convex ring groove is shaped as a semi-circular ring groove structure, and the other side of the convex ring groove is shaped as a semi-elliptical ring groove structure. The distance between the other side of the convex ring groove and the side surface of the transmission wheel is not greater than the distance between one side of the convex ring groove and the side surface of the transmission wheel. A round rod is movably mounted in the convex ring groove, and a fixed rod is hinged on one side of the round rod passing through the convex ring groove. A fixing frame is provided at the bottom end of the fixed rod, and two sides of the fixing frame are respectively mounted on the fixed rod and the lower punch. The support shell and the support platform are respectively provided with through holes, which are mounted on the fixed rod, and the aperture of the through hole matches the diameter of the fixed rod.

[0010] Preferably, the punching hopper is mounted with a bracket, a powder suction hopper is arranged on one side of the bracket, the powder suction hopper is located above the support platform, the two sides of the bracket are respectively installed on the punching hopper and the powder suction hopper, the middle part of the powder suction hopper adopts a trumpet-shaped structure, and the diameter of the middle part of the powder suction hopper gradually decreases in the direction away from the support platform.

[0011] Preferably, a distribution hopper is provided on the side of the support platform away from the support shell, one side of the distribution hopper is installed on the side wall of the support platform, and one side of the distribution hopper is provided with a plurality of powder screening grooves, which are evenly spaced on one side of the distribution hopper.

[0012] Preferably, the tops of the feeding hopper and the punching hopper are respectively trumpet-shaped structures, and the diameter of the feeding hopper and the top diameter of the punching hopper gradually decrease in the direction approaching the support platform.

[0013] The beneficial effects of the utility model are as follows: firstly, the utility model guides the input powder to fall into the middle mold through the provided guide hopper, that is, the powder falls on the lower punch, passes through the punch hopper through the upper punch, and makes the upper punch enter the guide hopper, so that the upper punch presses the powder in the middle mold, and then presses the powder in the middle mold into tablets, so as to prevent the powder in the middle mold from being scraped off by the guide hopper, improve the quality of tablet preparation, reduce the residual powder at the bottom of the guide hopper, and reduce the pollution to the support platform; and with the rotation of the hinge shaft, when the bottom end of the guide hopper is controlled to move to one side of the support platform, the pressed tablets and the powder remaining at the bottom end of the guide hopper fall from the support platform together, so as to prevent the powder remaining at the bottom end of the guide hopper from entering the middle mold, that is, to avoid affecting the tableting again.

[0014] Secondly, the utility model uses the spring and the disc to press the guide hopper on the top surface of the support platform to reduce the gap between the guide hopper and the support platform, improve the stability of guiding the input powder to fall into the middle mold, connect the fixed plate with the hinge shaft through the clamp, insert the pin shaft into the slide groove provided on the fixed plate, and use the telescopic cylinder to drive the pin shaft to move, thereby driving the fixed plate, the pin shaft, the feed hopper, the guide hopper and the punching bucket to rotate, so as to facilitate the tableting operation. Moreover, the utility model can drive the upper punch to move up and down through the eccentric wheel and the pressure shaft with the pressure groove, and can drive the lower punch to move up and down through the fixed rod, the transmission wheel and the round rod with the convex ring groove, so that the motor shaft rotates one circle, the eccentric wheel and the transmission wheel rotate once around the motor shaft, so that the transmission pressure shaft and the fixed rod complete an up and down movement, and then drive the upper punch and the lower punch to complete an up and down movement, so that the upper punch and the lower punch complete a tableting operation according to the tableting requirements, so as to repeat the tableting operation.

[0015] Thirdly, the utility model fixes the powder suction hopper on one side of the punching hopper by setting a bracket, so that the powder suction hopper can rotate with the punching hopper, and uses an air pipe to connect the fan to the top of the powder suction hopper, so as to suck away the powder adsorbed on the support platform to improve the cleanliness of the support platform. In addition, the utility model sets a distribution hopper, and a plurality of powder screening grooves are provided on the distribution hopper, so that when the bottom end of the guide hopper moves to one side of the support platform, the bottom end of the guide hopper is located above one side of the distribution hopper, and the pressed tablets and the powder remaining at the bottom end of the guide hopper fall to one side of the distribution hopper together, and the tablets will be sent out with the bottom end of the distribution hopper; because the particle size of the powder falling on the distribution hopper is not larger than the groove width of the powder screening groove, the powder falling on the distribution hopper will flow out through the powder screening groove to complete the initial powder removal of the tablets. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the utility model.

[0017] Figure 2 for Figure 1 A magnified schematic diagram of center A.

[0018] Figure 3 It is a three-dimensional cross-sectional view of the utility model.

[0019] Figure 4 It is an assembly explosion diagram of the feeding hopper, telescopic cylinder and powder suction hopper in the utility model.

[0020] Figure 5 It is an exploded view of the assembly of the eccentric wheel and the pressure shaft in the utility model.

[0021] Figure 6 It is an exploded view of the assembly of the rotating shaft, transmission wheel and fixing rod of the motor in the utility model.

[0022] Figure 7 It is a three-dimensional cross-sectional view of the feeding hopper, the guiding hopper, the punching hopper, the hinge shaft and the disc in the utility model. DETAILED DESCRIPTION

[0023] like Figures 1 to 7 As shown, a powder single punch tablet press comprises a support platform 1, a middle die 2 arranged on the support platform 1, a lower punch 3 fitted in the middle die 2, an upper punch 4 arranged above the middle die 2, a motor 5 for driving the upper punch 4 to move vertically, and a support shell 6 arranged between the motor 5 and the support platform 1. A feeding hopper 7 is arranged above the support platform 1, a guide hopper 8 is arranged obliquely between the feeding hopper 7 and the support platform 1, the top end of the guide hopper 8 is installed above the feeding hopper 7, the bottom end of the guide hopper 8 is located between the upper punch 4 and the lower punch 3, the bottom end of the guide hopper 8 is in contact with the top surface of the support platform 1, a punch 9 is arranged between the upper punch 4 and the guide hopper 8, the bottom end of the punch 9 is installed on the guide hopper 8, the punch 9 and the feeding hopper 7 are respectively connected with the guide hopper 8, the inner cavity diameter of the punch 9 is not greater than the diameter of the upper punch 4, a hinge shaft 10 is arranged below the feeding hopper 7, the top end of the hinge shaft 10 is installed on the guide hopper 8, and the hinge shaft 10 is hinged on the support platform 1. Powder is put into the feeding hopper 7, and the powder is guided by the guide hopper 8 so that the powder falls into the middle mold 2, that is, the powder falls on the lower punch 3. By controlling the motor 5, the upper punch 4 is driven to move toward the lower punch 3, so that the upper punch 4 passes into the punch hopper 9 and the guide hopper 8 in sequence, so that the upper punch 4 presses the powder in the middle mold 2, and then presses the powder in the middle mold 2 into tablets, so as to prevent the powder on the top of the middle mold 2 from being scraped off by the guide hopper 8, thereby improving the quality of tablet preparation, reducing the residual powder at the bottom of the guide hopper 8, and reducing the pollution to the support platform 1. And by controlling the upper punch 4 and the lower punch 3 to move upward, the upper punch 4 passes through the punch hopper 9 and the guide hopper 8, and the top surface of the lower punch 3 and the top surface of the support platform 1 are located on the same plane. By rotating the hinge shaft 10, the guide hopper 8 and the punch hopper 9 are driven to rotate, thereby driving the tablet pressed on the lower punch 3 to move, so that when the bottom end of the guide hopper 8 moves to one side of the support platform 1, the pressed tablet falls from the guide hopper 8 to complete the tablet discharge operation; at the same time, the remaining powder at the bottom end of the guide hopper 8 will fall together with the tablet to avoid the remaining powder at the bottom end of the guide hopper 8 from entering the middle mold 2, that is, to avoid affecting the tablet making again.

[0024] In this embodiment, a sleeve hole is provided on the support platform 1, and the hinge shaft 10 is sleeved in the sleeve hole. A spring 11 is arranged below the sleeve hole, and the spring 11 is sleeved on the hinge shaft 10. A disc 12 is arranged at the bottom end of the spring 11, and the top surface of the disc 12 is installed on the bottom end of the hinge shaft 10. The two sides of the spring 11 are in contact with the support platform 1 and the disc 12 respectively. The bottom end of the guide hopper 8 is pressed against the top surface of the support platform 1 by the spring 11 to control the bottom end of the guide hopper 8 to be movable and fitted on the support platform 1. It should be noted that the aperture of the sleeve hole is consistent with the diameter of the hinge shaft 10, so as to reduce the shaking during the rotation of the hinge shaft 10. The diameter of the disc 12 is not less than the diameter of the hinge shaft 10, so as to facilitate pressing the two sides of the spring 11 on the support platform 1 and the disc 12 respectively.

[0025] Specifically, the hinge shaft 10 is provided with a clamp 13, and the clamp 13 is located above the support platform 1. A fixed plate 14 is provided on one side of the clamp 13, and the fixed plate 14 is installed on the clamp 13. A slide groove 15 is opened on the fixed plate 14, and a pin shaft 16 is movably mounted in the slide groove 15. The diameter of the pin shaft 16 matches the groove width of the slide groove 15. A telescopic cylinder 17 is provided on one side of the pin shaft 16, and the pin shaft 16 is installed on the telescopic rod of the telescopic cylinder 17. The telescopic cylinder 17 is installed on the support platform 1 between the support shell 6 and the feeding hopper 7. The telescopic cylinder 17 is extended and retracted to drive the pin shaft 16 to move, thereby facilitating the rotation of the fixed plate 14, the pin shaft 16, the feeding hopper 7, the guide hopper 8 and the punching bucket 9, so as to facilitate the completion of the sheet discharging operation.

[0026] Please refer again Figure 3 and 5 The motor 5 is horizontally mounted on the support shell 6, the support shell 6 is mounted on the top surface of the support platform 1, and the rotating shaft of the motor 5 is rotatably mounted in the support shell 6. An eccentric wheel 18 is provided at one end of the rotating shaft of the motor 5 away from the motor 5, and the center line of the eccentric wheel 18 is located on one side of the center line of the rotating shaft of the motor 5. A pressure shaft 19 is vertically provided on the eccentric wheel 18, and a pressure groove 20 is provided on one side of the pressure shaft 19. The eccentric wheel 18 is movably mounted in the pressure groove 20, and the diameter of the eccentric wheel 18 is consistent with the groove height of the pressure groove 20. A limiting hole 21 is provided on the support shell 6, and the pressure shaft 19 is movably mounted in the limiting hole 21, and the diameter of the pressure shaft 19 is consistent with the aperture of the limiting hole 21, thereby limiting the pressure shaft 19 to only move up and down. The upper punch 4 is installed on the bottom end of the pressure shaft 19. By controlling the operation of the motor 5, the rotating shaft of the motor 5 rotates one circle, driving the eccentric wheel 18 to make an eccentric rotation around the rotating shaft of the motor 5, thereby transmitting the pressure shaft 19 to complete an up and down movement, and then driving the upper punch 4 to complete an up and down movement.

[0027] Please refer again Figure 2 and 6The transmission wheel 22 is mounted on the rotating shaft of the motor 5. The transmission wheel 22 is installed on the rotating shaft of the motor 5. A convex annular groove 23 is provided on one side of the transmission wheel 22. One side of the convex annular groove 23 is in the shape of a semicircular annular groove structure, and the other side of the convex annular groove 23 is in the shape of a semi-elliptical annular groove structure. The distance between the other side of the convex annular groove 23 and the side surface of the transmission wheel 22 is not greater than the distance between one side of the convex annular groove 23 and the side surface of the transmission wheel 22. A round rod 24 is movably mounted in the convex annular groove 23. A fixing rod 25 is hinged on one side of the round rod 24 passing through the convex annular groove 23. A fixing frame 26 is provided at the bottom end of the fixing rod 25. The fixing frame 26 is divided into two sides. The fixing rod 25 and the lower punch 3 are separately installed thereon. A perforation is respectively provided on the supporting shell 6 and the supporting platform 1. The perforation is sleeved on the fixing rod 25. The aperture of the perforation matches the diameter of the fixing rod 25, thereby limiting the fixing rod 25 to be able to move only up and down. The rotating shaft of the motor 5 rotates one circle, driving the transmission wheel 22 to rotate one circle. Since the distance between the other side of the convex annular groove 23 and the side surface of the transmission wheel 22 is not greater than the distance between one side of the convex annular groove 23 and the side surface of the transmission wheel 22, the round rod 24 is driven to complete an up and down movement, thereby driving the fixing frame 26 and the lower punch 3 to complete an up and down movement, thereby facilitating the synchronous pressing of the powder by the upper punch 4.

[0028] In this embodiment, the punching hopper 9 is provided with a bracket 27, and a powder suction hopper 28 is provided on one side of the bracket 27. The powder suction hopper 28 is located above the support platform 1, and the two sides of the bracket 27 are respectively installed on the punching hopper 9 and the powder suction hopper 28. The middle part of the powder suction hopper 28 adopts a trumpet-shaped structure, and the middle diameter of the powder suction hopper 28 gradually decreases in the direction away from the support platform 1. By inserting one end of the air pipe into the top of the powder suction hopper 28 and then installing the other end of the air pipe on the fan, the operation of the fan can be controlled to suck away the powder adsorbed on the support platform 1, so as to reduce the residual powder on the support platform 1 and improve the cleanliness of the support platform 1.

[0029] Specifically, a distribution hopper 29 is provided on the side of the support platform 1 away from the support shell 6, and one side of the distribution hopper 29 is installed on the side wall of the support platform 1. A plurality of powder screening grooves 30 are opened on one side of the distribution hopper 29, and the plurality of powder screening grooves 30 are evenly spaced and distributed on one side of the distribution hopper 29. Therefore, when the bottom end of the guide hopper 8 moves to one side of the support platform 1, the bottom end of the guide hopper 8 is located above one side of the distribution hopper 29, so that the pressed tablets and the powder remaining at the bottom end of the guide hopper 8 fall to one side of the distribution hopper 29 together. Since the size of the tablet is much larger than the groove width of the powder screening groove 30, the tablet will be sent out along with the bottom end of the distribution hopper 29; since the particle size of the powder falling on the distribution hopper 29 is not larger than the groove width of the powder screening groove 30, the powder falling on the distribution hopper 29 will pass through the powder screening groove 30 and flow out to complete the preliminary powder removal of the tablet.

[0030] It should be noted that the tops of the feeding hopper 7 and the punching hopper 9 are respectively trumpet-shaped structures, and the diameter of the feeding hopper 7 and the top diameter of the punching hopper 9 gradually decrease in the direction close to the support platform 1, so as to facilitate the feeding of powder into the feeding hopper 7 and facilitate the upper punch 4 to penetrate the punching hopper 9.

[0031] The filling, tableting and discharging methods of this product are as follows: Figures 1 to 7 As shown, at the beginning of the work, the upper punch 4 is first raised, and the lower punch 3 is controlled to descend to an appropriate position, and then the powder is added into the feeding hopper 7, and the powder is guided into the middle mold 2 through the guide hopper 8, so that the powder falls on the lower punch 3, thereby completing the filling operation. Then, by running the motor 5, the upper punch 4 is driven to pass through the punch hopper 9 and the guide hopper 8 in sequence, so that the upper punch 4 presses the powder in the middle mold 2, and then the powder in the middle mold 2 is pressed into tablets to complete the tableting operation. After the tableting operation is completed, with the operation of the motor 5, the upper punch 4 and the lower punch 3 are controlled to rise, driving the upper punch 4 to pass through the punch hopper 9, so that the tablets pressed by the lower punch 3 are moved to the top of the middle mold 2; by controlling the telescopic cylinder 17, the pin 16 is driven to move, thereby driving the guide hopper 8 and the tablets pressed in the guide hopper 8 and the powder remaining at the bottom of the guide hopper 8 to rotate together; for this reason, when the bottom end of the guide hopper 8 moves to the top of the distribution hopper 29, the tablets pressed in the guide hopper 8 and the powder remaining at the bottom of the guide hopper 8 fall into the distribution hopper 29 together, thereby completing the tableting operation. Then, by controlling the telescopic cylinder 17 to drive the pin 16 to move in the opposite direction, the bottom end of the guide hopper 8 is retreated to the top of the middle mold 2, and the powder is put into the feeding hopper 7 again, thereby repeating the tableting operation. In addition, in order to improve the cleanliness of the support platform 1, an air pipe is used to connect the fan and the top of the powder suction hopper 28. The fan is started to suck away the powder at the bottom of the powder suction hopper 28. The powder suction hopper 28 is fixed to the hopper 9 through the bracket 27, so that the powder suction hopper 28 can move with the rotation of the hopper 9, so that the powder suction hopper 28 can suck away the residual powder at multiple positions of the support platform.

[0032] Specifically, the hinge shaft 10 is provided with a clamp 13, and the clamp 13 is located above the support platform 1. A fixed plate 14 is provided on one side of the clamp 13, and the fixed plate 14 is installed on the clamp 13. A slide groove 15 is opened on the fixed plate 14, and a pin shaft 16 is movably mounted in the slide groove 15. The diameter of the pin shaft 16 matches the groove width of the slide groove 15. A telescopic cylinder 17 is provided on one side of the pin shaft 16, and the pin shaft 16 is installed on the telescopic rod of the telescopic cylinder 17. The telescopic cylinder 17 is installed on the support platform 1 between the support shell 6 and the feeding hopper 7. The telescopic cylinder 17 is extended and retracted to drive the pin shaft 16 to move, thereby facilitating the rotation of the fixed plate 14, the pin shaft 16, the feeding hopper 7, the guide hopper 8 and the punching bucket 9, so as to facilitate the completion of the sheet discharging operation.

[0033] Through this embodiment, the provided guide hopper 8 is used to guide the input powder to fall into the middle mold 2, that is, the powder falls on the lower punch 3, and passes through the punch hopper 9 through the upper punch 4, so that the upper punch 4 enters the guide hopper 8, so that the upper punch 4 presses the powder in the middle mold 2, and then presses the powder in the middle mold 2 into tablets, so as to prevent the powder in the middle mold 2 from being scraped off by the guide hopper 8, improve the quality of tablet preparation, reduce the residual powder at the bottom of the guide hopper 8, and reduce the pollution to the support platform 1; and with the rotation of the hinge shaft 10, when the bottom end of the guide hopper 8 is controlled to move to one side of the support platform 1, the pressed tablets and the powder remaining at the bottom of the guide hopper 8 fall from the support platform 1 together, so as to prevent the powder remaining at the bottom of the guide hopper 8 from entering the middle mold 2, that is, to avoid affecting the tableting again.

[0034] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A powder single punch tablet press, comprising a support platform (1), a middle die (2) arranged on the support platform (1), a lower punch (3) mounted inside the middle die (2), an upper punch (4) arranged above the middle die (2), a motor (5) for driving the upper punch (4) to move vertically, and a support shell (6) arranged between the motor (5) and the support platform (1), characterized in that: A feeding hopper (7) is arranged above the support platform (1), and a guide hopper (8) is arranged obliquely between the feeding hopper (7) and the support platform (1). The top end of the guide hopper (8) is installed above the feeding hopper (7), and the bottom end of the guide hopper (8) is located between the upper punch (4) and the lower punch (3). The bottom end of the guide hopper (8) contacts the top surface of the support platform (1). A punching hopper (9) is arranged between the upper punch (4) and the guide hopper (8), and the bottom end of the punching hopper (9) is installed on the guide hopper (8). The punching hopper (9) and the feeding hopper (7) are respectively connected to the guide hopper (8). The inner cavity diameter of the punching hopper (9) is not less than the diameter of the upper punch (4). A hinge shaft (10) is arranged below the feeding hopper (7), and the top end of the hinge shaft (10) is installed on the guide hopper (8). The hinge shaft (10) is hinged to the support platform (1).

2. The powder single punch tablet press according to claim 1, characterized in that: The support platform (1) is provided with a sleeve hole, the hinge shaft (10) is sleeved in the sleeve hole, a spring (11) is arranged below the sleeve hole, the spring (11) is sleeved on the hinge shaft (10), a disc (12) is arranged at the bottom end of the spring (11), the top surface of the disc (12) is mounted on the bottom end of the hinge shaft (10), the two sides of the spring (11) are in contact with the support platform (1) and the disc (12) respectively, and the bottom end of the guide hopper (8) is pressed against the top surface of the support platform (1) by the spring (11).

3. The powder single punch tablet press according to claim 2, characterized in that: The hinge shaft (10) is sleeved with a hoop (13), the hoop (13) is located above the support platform (1), a fixing plate (14) is arranged on one side of the hoop (13), the fixing plate (14) is mounted on the hoop (13), a slide groove (15) is provided on the fixing plate (14), a pin shaft (16) is movably sleeved in the slide groove (15), the diameter of the pin shaft (16) is consistent with the groove width of the slide groove (15), a telescopic cylinder (17) is arranged on one side of the pin shaft (16), the pin shaft (16) is mounted on the telescopic rod of the telescopic cylinder (17), and the telescopic cylinder (17) is mounted on the support platform (1) between the support shell (6) and the feeding hopper (7).

4. The powder single punch tablet press according to claim 1, characterized in that: The motor (5) is horizontally mounted on a support shell (6), the support shell (6) is mounted on the top surface of the support platform (1), the rotating shaft of the motor (5) is rotatably mounted in the support shell (6), an eccentric wheel (18) is arranged at one end of the rotating shaft of the motor (5) away from the motor (5), the center line of the eccentric wheel (18) is located on one side of the center line of the rotating shaft of the motor (5), a pressing shaft (19) is vertically arranged on the eccentric wheel (18), a pressing groove (20) is provided on one side of the pressing shaft (19), the eccentric wheel (18) is movably mounted in the pressing groove (20), the diameter of the eccentric wheel (18) is consistent with the groove height of the pressing groove (20), a limiting hole (21) is provided on the support shell (6), the pressing shaft (19) is movably mounted in the limiting hole (21), the diameter of the pressing shaft (19) is consistent with the aperture of the limiting hole (21), and the upper punch (4) is mounted on the bottom end of the pressing shaft (19).

5. The powder single punch tablet press according to claim 1, characterized in that: The rotating shaft of the motor (5) is provided with a transmission wheel (22), the transmission wheel (22) being mounted on the rotating shaft of the motor (5), a convex annular groove (23) being provided on one side of the transmission wheel (22), the shape of one side of the convex annular groove (23) being a semicircular annular groove structure, the shape of the other side of the convex annular groove (23) being a semi-elliptical annular groove structure, the distance between the other side of the convex annular groove (23) and the side surface of the transmission wheel (22) being no greater than the distance between one side of the convex annular groove (23) and the side surface of the transmission wheel (22) A round rod (24) is movably mounted in the convex annular groove (23), a fixed rod (25) is hingedly connected to one side of the round rod (24) passing through the convex annular groove (23), a fixed frame (26) is arranged at the bottom end of the fixed rod (25), and two sides of the fixed frame (26) are respectively mounted on the fixed rod (25) and the lower punch (3), and a through hole is respectively opened on the support shell (6) and the support platform (1), and the through hole is mounted on the fixed rod (25), and the aperture of the through hole is consistent with the diameter of the fixed rod (25).

6. The powder single punch tablet press according to claim 1, characterized in that: The punching hopper (9) is provided with a bracket (27), a powder suction hopper (28) is provided on one side of the bracket (27), the powder suction hopper (28) is located above the support platform (1), and the two sides of the bracket (27) are respectively installed on the punching hopper (9) and the powder suction hopper (28), the middle part of the powder suction hopper (28) adopts a trumpet-shaped structure, and the diameter of the middle part of the powder suction hopper (28) gradually decreases in the direction away from the support platform (1).

7. The powder single punch tablet press according to claim 1, characterized in that: A distribution hopper (29) is provided on a side of the support platform (1) away from the support shell (6); one side of the distribution hopper (29) is mounted on a side wall of the support platform (1); a plurality of powder screening grooves (30) are provided on one side of the distribution hopper (29); the plurality of powder screening grooves (30) are evenly spaced and distributed on one side of the distribution hopper (29).

8. The powder single punch tablet press according to claim 1, characterized in that: The tops of the feeding hopper (7) and the punching hopper (9) are respectively trumpet-shaped structures, and the diameter of the feeding hopper (7) and the top diameter of the punching hopper (9) gradually decrease in a direction approaching the support platform (1).

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