Powder tabletting device for processing absorbable bone repair replacement material

Abstract

The utility model discloses a kind of powder tabletting device for absorbable bone repair replacement material processing, including base, punch mechanism for tabletting for being installed on base, blanking mechanism for exporting powder to mould and control panel electrically connected with punch mechanism for being installed on base, base includes the stamping area corresponding with punch mechanism and the feeding area corresponding with blanking mechanism, base is provided with mould disc sliding along feeding area and stamping area, several stamping grooves are opened on mould disc, and multiple moulds are placed in each stamping groove respectively, punch mechanism includes the several punches corresponding with the mould in several stamping grooves one to one, and punch and mould cooperate for the powder in mould is pressed into tablet.The utility model has the beneficial effect that multiple products can be simultaneously completed in a work cycle The tabletting of multiple stations improves production efficiency compared to the tabletting of single station, especially suitable for absorbable bone repair material which needs to be prepared in batches.

Description

Technical Field

[0001] This utility model relates to the field of biomedical material processing equipment, and more specifically, it relates to a powder compression device for processing absorbable bone repair substitute materials. Background Technology

[0002] With the development of biomedical materials technology, absorbable bone repair substitutes have become a research hotspot in the field of orthopedic implants due to their excellent biocompatibility and biodegradability. These materials include magnesium-containing biodegradable polymers, L-polylactic acid / hydroxyapatite composites, and iron-magnesium alloys. After completing their bone repair function in the body, they gradually degrade and are absorbed, avoiding the need for secondary surgery for removal. The powder compression process is a key step in the molding of absorbable bone repair materials, and this process is typically completed using a powder compression machine.

[0003] Utility model patent application number 202422666032.7 discloses an automatic powder tableting machine, including a housing, a top plate, a worktable, and a feeding mechanism. The worktable is mounted on the housing, and a hydraulic telescopic mechanism connected to the worktable is installed inside the housing. The top plate is fixed to the housing by several columns, and a screw is threaded onto the top plate. A fixed protective plate connects the housing and the top plate. The feeding mechanism is slidably connected to the fixed protective plate and includes a storage hopper, a discharge pipe, and a cover plate. The storage hopper is slidably connected to the fixed protective plate via a sliding rod, and the outlet of the storage hopper is connected to the discharge pipe. A cover plate is connected to the end of the discharge pipe. A control panel is mounted on the housing and is electrically connected to the hydraulic telescopic mechanism. This utility model automatically tablets powder by controlling the hydraulic telescopic mechanism, making operation simple and convenient. Simultaneously, the feeding mechanism can deliver powder to the mold, changing the manual method of scooping powder into the mold, effectively preventing powder from scattering outside the mold and avoiding powder waste.

[0004] However, current technologies typically employ a single workstation for tablet compression, meaning only one product can be produced per work cycle. This model is inefficient and cannot meet the demands of large-scale production of bone repair materials, becoming a bottleneck for capacity expansion. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a powder compression device for processing absorbable bone repair substitute materials.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A powder compression device for processing absorbable bone repair substitute materials includes a base, a stamping mechanism mounted on the base for compression, a feeding mechanism for outputting powder to a mold, and a control panel mounted on the base and electrically connected to the stamping mechanism. The base includes a stamping area corresponding to the stamping mechanism and a feeding area corresponding to the feeding mechanism. The base is provided with a mold plate that slides along the feeding area and the stamping area. The mold plate has several stamping slots, and multiple molds are placed in each stamping slot.

[0008] The feeding mechanism includes a hopper mounted on the machine base, a discharge pipe communicating with the hopper, a transition pipe that runs through the discharge pipe and is arranged in a cross shape with the discharge pipe, and a sealing plug that rotates inside the transition pipe. The output end of the discharge pipe corresponds to the cavity of the mold.

[0009] The transition tube has an upper hole and a lower hole that communicate with the discharge pipe. The sealing plug has a through hole placed between the upper hole and the lower hole. The sealing plug rotates inside the transition tube to make the through hole communicate with the upper hole and the lower hole to form a discharge channel that facilitates the discharge of powder to the mold. The sealing plug rotates 90 degrees inside the transition tube to make the through hole misaligned and not communicate with the upper hole and the lower hole, which is used to close the discharge channel.

[0010] The stamping mechanism includes a hydraulic cylinder, a fixed rod installed at the output end of the hydraulic cylinder, an extension plate installed at the lower end of the fixed rod, and several punches installed on the extension plate and corresponding one-to-one with the dies in several stamping slots. The punches cooperate with the dies to press the powder in the dies into tablets.

[0011] A further configuration is provided, wherein the feeding area has a guide groove extending to the stamping area, and the mold plate slides within the guide groove.

[0012] A further configuration is provided, wherein a positioning groove is formed on the inner wall of the bottom of the guide groove, and a positioning part is provided on the mold plate to cooperate with the positioning groove, and the positioning part slides in the guide groove.

[0013] Further configured, the positioning part includes a guide tube on the mounting mold plate, a spring that moves inside the guide tube, and a positioning block that is inserted into the positioning groove. One end of the spring is fixed inside the guide tube, and the other end of the spring is fixedly connected to the positioning block. One end of the positioning block moves inside the guide tube, and the other end of the positioning block slides on the bottom inner wall of the guide groove. The spring is in a compressed state.

[0014] Further configured, the other end of the positioning block is arc-shaped.

[0015] Further configured, the feeding area is provided with scale lines corresponding to the output end of the discharge pipe, and the mold plate is provided with a number of correction lines that cooperate with the scale lines, and the number of correction lines correspond one-to-one with the molds in the number of stamping slots.

[0016] Further configured, the storage hopper includes a cover.

[0017] A further configuration is that the storage hopper is funnel-shaped, and a fixing ring for placing the storage hopper is installed on the machine base, the diameter of the fixing ring being smaller than the maximum diameter of the storage hopper.

[0018] By adopting the above technical solution, the beneficial effects of this utility model are as follows:

[0019] 1. The design incorporates a mold plate with multiple stamping grooves and corresponding punches, achieving an upgrade from single-station to multi-station operation. This utility model's powder tableting device can simultaneously complete the tableting of multiple products within one work cycle. Compared to single-station tableting, multi-station tableting improves production efficiency, making it particularly suitable for scenarios requiring batch production, such as absorbable bone repair materials.

[0020] 2. The mold plate slides in the guide groove, and the scale lines and calibration lines ensure that each mold can stop precisely at the position corresponding to the discharge tube, which facilitates accurate material feeding to each mold. In addition, the positioning parts of the guide tube, spring, and positioning block cooperate with the positioning groove to ensure that the mold plate corresponds to the stamping mechanism. This ensures that each punch corresponds to each mold on the mold plate, which facilitates accurate pressing and reduces the error rate of operation. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0022] Figure 2 This is a schematic diagram showing the structure where the through hole connects to the upper and lower holes.

[0023] Figure 3 This is a schematic diagram of a structure where the through hole is misaligned with the upper and lower holes.

[0024] Figure 4 This is a schematic diagram of the structure in which the positioning block and the guide groove cooperate.

[0025] Figure 5 This is a schematic diagram of the structure of the positioning block and the positioning groove.

[0026] In the figure: base 100, stamping mechanism 200, unloading mechanism 300, stamping area 101, loading area 102, mold plate 1, stamping groove 2, storage hopper 3, discharge pipe 4, transition pipe 5, sealing plug 6, upper hole 51, lower hole 52, through hole 61, hydraulic cylinder 7, fixing rod 9, extension plate 10, punch 11, guide groove 12, positioning groove 13, positioning part 14, guide tube 141, spring 142, positioning block 143, scale line 15, correction line 16, cover 17, fixing ring 18. Detailed Implementation

[0027] Reference Figures 1 to 5 The embodiments of this utility model will be further described below.

[0028] The mold described in this utility model is a mold body containing a cavity used in the prior art for powder tableting, which is a standard or customized part that is detachably set in the stamping groove.

[0029] A powder tableting apparatus for processing absorbable bone repair substitute materials includes a base 100, a stamping mechanism 200 mounted on the base 100 for tableting, a feeding mechanism 300 for outputting powder to a mold, and a control panel (not shown) mounted on the base 100 and electrically connected to the stamping mechanism 200. The base 100 includes a stamping area 101 corresponding to the stamping mechanism 200 and a feeding area 102 corresponding to the feeding mechanism 300. The base 100 is provided with a mold disk 1 that slides along the feeding area 102 and the stamping area 101. The feeding area 102 has a guide groove 12 extending to the stamping area 101. The mold disk 1 slides in the guide groove 12. The mold disk 1 has a plurality of stamping grooves 2. Multiple molds are placed in each stamping groove 2. The height of the stamping groove 2 is set to be slightly lower than the height of the mold used.

[0030] The feeding mechanism 300 includes a storage hopper 3, a discharge pipe 4 connected to the storage hopper 3, a transition pipe 5 that runs through the discharge pipe 4 and is arranged in a cross shape with the discharge pipe 4, and a sealing plug 6 that rotates inside the transition pipe 5. The output end of the discharge pipe 4 corresponds to the cavity of the mold. The storage hopper 3 includes a cover 17 and is funnel-shaped. A fixing ring 18 for placing the storage hopper 3 is installed on the machine base 100. The diameter of the fixing ring 18 is smaller than the maximum diameter of the storage hopper 3, so as to realize the installation of the storage hopper 3 on the machine base 100, and at the same time, it is convenient to remove the storage hopper 3 from the fixing ring 18 to clean the residual powder inside, so as to avoid cross-contamination of the powder in the next batch.

[0031] The transition tube 5 has an upper hole 51 and a lower hole 52 that communicate with the discharge tube 4. The sealing plug 6 has a through hole 61 placed between the upper hole 51 and the lower hole 52. The sealing plug 6 rotates in the transition tube 5 to make the through hole 61 communicate with the upper hole 51 and the lower hole 52 to form a discharge channel that facilitates the discharge of powder to the mold. The sealing plug 6 rotates 90 degrees in the transition tube 5 to make the through hole 61 misaligned and not communicated with the upper hole 51 and the lower hole 52, which is used to close the discharge channel.

[0032] The stamping mechanism 200 includes a hydraulic cylinder 7 mounted on a base 100, a fixed rod 9 fixed to the output end of the hydraulic cylinder 7, an extension plate 10 fixed to the lower end of the fixed rod 9, and a plurality of punches 11 mounted on the extension plate 10 and corresponding one-to-one with the molds in the plurality of stamping slots 2. The punches 11 cooperate with the molds to press the powder in the molds into tablets.

[0033] Working principle: The operator pre-places multiple molds in the various stamping slots 2 of the mold plate 1. The stamping slots 2 and the molds are tightly fitted to ensure that the molds will not move when subjected to huge stamping pressure. The mold plate 1 is manually pushed to slide along the guide groove 12 to the feeding area 102. In the feeding area 102, the powder is transported into the mold by the unloading mechanism 300. Specifically, the sealing plug 6 is manually rotated so that its through hole 61 is aligned with the upper hole 51 and lower hole 52 of the transition pipe 5 to form a feeding channel. The powder in the storage hopper 3 is precisely filled into the empty mold cavity through the feeding channel, the discharge pipe 4 and the transition pipe 5. Compared with the traditional method where the operator needs to use a key to scoop material from the raw material tank and fill the mold cavity one spoonful at a time, this utility model only requires rotating the sealing plug 6, which is convenient to operate, avoids powder spillage during the filling process, and helps to improve the powder filling efficiency. After filling one mold, the sealing plug 6 is manually rotated 90 degrees again to completely misalign the through hole 61 with the upper hole 51 and the lower hole 52, thereby closing the feeding channel. The mold plate 1 is then pushed to move the next mold directly below the discharge pipe 4 for powder filling. During the process of pushing the mold plate 1, the operator can quickly and intuitively confirm whether each mold has been accurately moved directly below the discharge pipe 4 by observing whether the calibration line 16 corresponding to the mold on the mold plate 1 is aligned with the scale line 15 of the feeding area 102, thus ensuring the accuracy of feeding.

[0034] After all the molds are filled, continue pushing the mold plate 1 to slide it into the stamping area 101 until the positioning part 14 on the mold plate 1 moves to the designated position and interacts with the positioning groove 13 at the bottom of the guide groove 12. That is, the positioning block 143 of the positioning part 14, in a compressed state, is precisely locked into the positioning groove 13 under the action of the spring 142. This process is accompanied by a clear "click" sound, which realizes the precise positioning of the mold plate 1 in the stamping area 101, ensuring that each mold is precisely aligned with the corresponding punch 11 above, reducing the error rate of operation.

[0035] After the mold plate 1 is positioned, the stamping mechanism 200 begins operation. The hydraulic cylinder 7 is activated, driving all the punches 11 to descend synchronously via the fixed rod 9 and the extension plate 10, simultaneously applying pressure to the powder within their respective molds. This powder tableting device can simultaneously complete the tableting of multiple products within one work cycle, achieving an upgrade from single-station to multi-station operation. Compared to single-station tableting, multi-station tableting improves production efficiency, making it particularly suitable for scenarios requiring batch production, such as absorbable bone repair materials.

[0036] After the tableting is completed, the hydraulic cylinder 7 drives all the punches 11 to rise synchronously. The operator moves the positioning block 143 out of the positioning groove 13, pushes the mold plate 1, which carries multiple preformed blanks, from the stamping area 101 along the guide groove 12 back to the feeding area 102, and takes it out from the guide groove 12. The mold is then removed from the stamping groove 2 to complete the demolding.

[0037] The bottom inner wall of the guide groove 12 has a positioning groove 13. The mold plate 1 is provided with a positioning part 14 that cooperates with the positioning groove 13. The positioning part 14 includes a guide tube 141 mounted on the mold plate 1, a spring 142 that moves in the guide tube 141, and a positioning block 143 that is inserted into the positioning groove 13. One end of the spring 142 is fixed in the guide tube 141, and the other end of the spring 142 is fixedly connected to the positioning block 143. One end of the positioning block 143 moves in the guide tube 141, and the other end of the positioning block 143 slides on the bottom inner wall of the guide groove 12. The other end of the positioning block 143 abuts against the bottom inner wall of the guide groove 12, so that the spring 142 is in a compressed state. The other end of the positioning block 143 is arc-shaped.

[0038] During the stamping process, the immense pressure requires the punch 11 to be perfectly aligned with the mold cavity. The positioning part 14 of this design uses spring 142 to force the positioning block 143 into the positioning groove 13, achieving precise positioning of the mold plate 1 in the stamping area 101 and ensuring precise alignment with the mold and corresponding punch 11 on the mold plate 1. Furthermore, the positioning block 143's engagement with the positioning groove 13 prevents slight displacement of the mold plate 1 under pressure, ensuring uniform pressure distribution. This avoids flash, uneven density, and even damage to the punch 11 and mold caused by misalignment, thus improving the quality of the pressed blank and extending the mold's service life.

[0039] The spring 142 is compressed, ensuring that the positioning block 143 is constantly subjected to downward pressure as it slides across the bottom surface of the guide groove 12. The operator experiences a clear "click" sound and tactile feedback the instant the positioning block 143 slides into the positioning groove 13. This positive tactile and auditory feedback allows the operator to perceive successful positioning without visual confirmation, improving operational reliability and efficiency, and reducing production accidents caused by incomplete positioning.

[0040] The arc-shaped bottom of the positioning block 143 reduces the frictional resistance between the positioning part 14 and the inner wall of the bottom of the guide groove 12 during the sliding process of the mold plate 1 in the guide groove 12, making the entire sliding positioning process smoother and less labor-intensive, and reducing the wear of the parts.

[0041] The feeding area 102 is provided with scale lines 15 corresponding to the output end of the discharge pipe 4. The mold plate 1 is provided with a number of correction lines 16 that cooperate with the scale lines 15. The number of correction lines 16 correspond one-to-one with the molds in the number of stamping grooves 2.

[0042] In the feeding area 102, it is necessary to ensure that each mold on the mold plate 1 is precisely positioned directly below the discharge pipe 4 of the unloading mechanism 300 for unloading, to ensure accurate and non-spillable unloading. By simply aligning a calibration line 16 on the mold plate 1 with a fixed scale line 15 in the feeding area 102, the operator can ensure that the mold at the current position is directly below the discharge pipe 4, thus facilitating accurate feeding of each mold by the unloading mechanism 300. This eliminates complex measurement or repeated adjustment steps, greatly simplifies the operation process, shortens the station changeover time, and reduces the technical requirements for operators, thereby reducing the difficulty of using this tablet press.

[0043] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0044] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "join," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A powder tableting apparatus for processing absorbable bone repair substitute materials, comprising a base (100), a stamping mechanism (200) mounted on the base (100) for tableting, a feeding mechanism (300) for discharging powder to a mold, and a control panel mounted on the base (100) and electrically connected to the stamping mechanism (200), characterized in that, The base (100) includes a stamping area (101) corresponding to the stamping mechanism (200) and a feeding area (102) corresponding to the unloading mechanism (300). The base (100) is provided with a mold plate (1) that slides along the feeding area (102) and the stamping area (101). The mold plate (1) has several stamping grooves (2), and multiple molds are placed in each stamping groove (2). The feeding mechanism (300) includes a hopper (3) mounted on the base (100), a discharge pipe (4) communicating with the hopper (3), a transition pipe (5) that runs through the discharge pipe (4) and is arranged in a cross shape with the discharge pipe (4), and a sealing plug (6) that rotates inside the transition pipe (5). The output end of the discharge pipe (4) corresponds to the cavity of the mold. The transition tube (5) has an upper hole (51) and a lower hole (52) that communicate with the discharge tube (4). The sealing plug (6) has a through hole (61) placed between the upper hole (51) and the lower hole (52). The sealing plug (6) rotates inside the transition tube (5) to make the through hole (61) communicate with the upper hole (51) and the lower hole (52) to form a discharge channel that facilitates the discharge of powder to the mold. The sealing plug (6) rotates 90 degrees inside the transition tube (5) to make the through hole (61) misaligned and not communicated with the upper hole (51) and the lower hole (52) to close the discharge channel. The stamping mechanism (200) includes a hydraulic cylinder (7), a fixed rod (9) installed at the output end of the hydraulic cylinder (7), an extension plate (10) installed at the lower end of the fixed rod (9), and a number of punches (11) installed on the extension plate (10) and corresponding one-to-one with the molds in the stamping grooves (2). The punches (11) cooperate with the molds to press the powder in the molds into tablets.

2. The powder compression device for processing absorbable bone repair substitute materials according to claim 1, characterized in that, The feeding area (102) has a guide groove (12) extending to the stamping area (101), and the mold plate (1) slides in the guide groove (12).

3. The powder compression device for processing absorbable bone repair substitute materials according to claim 2, characterized in that, The bottom inner wall of the guide groove (12) has a positioning groove (13), and the mold plate (1) is provided with a positioning part (14) that cooperates with the positioning groove (13). The positioning part (14) slides in the guide groove (12).

4. The powder compression device for processing absorbable bone repair substitute materials according to claim 3, characterized in that, The positioning part (14) includes a guide tube (141) on the mounting mold plate (1), a spring (142) that moves inside the guide tube (141), and a positioning block (143) that is inserted into the positioning groove (13). One end of the spring (142) is fixed inside the guide tube (141), and the other end of the spring (142) is fixedly connected to the positioning block (143). One end of the positioning block (143) moves inside the guide tube (141), and the other end of the positioning block (143) slides on the bottom inner wall of the guide groove (12). The spring (142) is in a compressed state.

5. The powder compression device for processing absorbable bone repair substitute materials according to claim 4, characterized in that, The other end of the positioning block (143) is arc-shaped.

6. The powder compression device for processing absorbable bone repair substitute materials according to claim 1, characterized in that, The feeding area (102) is provided with a scale line (15) corresponding to the output end of the discharge pipe (4). The mold plate (1) is provided with a number of correction lines (16) that cooperate with the scale line (15). The number of correction lines (16) correspond one-to-one with the molds in the number of stamping grooves (2).

7. The powder compression device for processing absorbable bone repair substitute materials according to claim 1, characterized in that, The storage hopper (3) includes a cover (17).

8. The powder compression device for processing absorbable bone repair substitute materials according to claim 1, characterized in that, The storage hopper (3) is funnel-shaped, and a fixing ring (18) for placing the storage hopper (3) is installed on the base (100). The diameter of the fixing ring (18) is smaller than the maximum diameter of the storage hopper (3).

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