Raw material particle conveying device for blood clotting cup production

Abstract

The invention belongs to the technical field of intelligent manufacturing equipment, and discloses a raw material particle conveying device for blood clotting cup production, which comprises a conveying cylinder, the side, far away from a storage cylinder, of the conveying cylinder, a conical cylinder and a discharge pipe are wrapped with heating mechanisms, and the side, close to the storage cylinder, of the conveying cylinder is provided with a first piston cavity; a first piston cavity is formed in the conveying cylinder, a first piston column is slidably mounted in the first piston cavity in a sealed mode, a first rotating shaft is rotatably mounted on the first piston column, spiral feeding teeth are arranged at the end, located on the conveying cylinder, of the first rotating shaft, three connecting columns which are evenly distributed in the circumferential direction are fixedly arranged on the first piston column, and a second mounting base is fixedly arranged on the connecting columns. The automatic injection molding machine has the beneficial effects that raw materials are prevented from flowing back in the conveying and injection molding processes, conveying continuity and injection molding precision are guaranteed, meanwhile, the conveying pressure is adjusted through the first driving component, intelligent material conveying and raw material injection are achieved, and blood clotting cup injection molding is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent manufacturing equipment, in particular to a raw material particle conveying device for blood coagulation cup production. BACKGROUND

[0002] An injection molding machine is a machine for manufacturing plastic products, which usually consists of a feeding system, a melting system, an injection system, a cooling system, a mold opening system and an operation control system. The injection molding machine realizes the conveying of the melting principle through the injection system and completes the injection molding.

[0003] However, the existing raw material particle conveying device for blood coagulation cup production has obvious technical defects: first, the raw material heating system is mostly of integral single temperature design, lacking of gradient preheating and precise melting collaborative control, which is easy to cause insufficient preheating of raw material particles, resulting in uneven subsequent melting or local overheating damage to the physical properties of raw materials, thereby affecting the use safety and structural stability of the blood coagulation cup; second, no reliable anti-backflow mechanism is provided in the conveying channel, and the melted raw material is easy to backflow when the conveying is interrupted or the injection pressure fluctuates, which not only causes the interruption of the injection process and the size deviation of the product, but also leads to raw material waste; third, lacking of intelligent adaptive mechanism, it is difficult to flexibly adjust according to the production requirements of different batches of blood coagulation cups, resulting in low production efficiency and large fluctuation of product qualification rate, which cannot meet the production requirements of large-scale and high-precision blood coagulation cups. SUMMARY

[0004] The purpose of the present application is to provide a raw material particle conveying device for blood coagulation cup production, which realizes gradient melting of raw materials through layered heating of the preheating cavity and the melting cavity of the heating mechanism, avoids damage to raw materials due to uneven heating, prevents backflow of raw materials during conveying and injection molding, ensures the continuity of conveying and the accuracy of injection molding, adjusts the conveying pressure by means of the first driving part, realizes intelligent conveying of materials and completes the injection of raw materials, realizes the injection molding of blood coagulation cups, and can flexibly adapt to different production requirements, effectively improving the production efficiency and product qualification rate.

[0005] In order to achieve the above object, the present application provides the following technical scheme: a raw material particle conveying device for blood coagulation cup production, comprising a conveying cylinder, a storage cylinder is arranged on one side of the upper end of the conveying cylinder, and the storage cylinder is in sealed communication with the conveying cylinder through a discharging pipe, a conical cylinder is arranged on the storage cylinder away from the storage cylinder, a discharging pipe is fixedly arranged on the end of the conical cylinder, a heating mechanism is wrapped on the side of the conveying cylinder away from the storage cylinder, the conical cylinder and the discharging pipe, for melting the conveyed raw material particles, a gap is reserved between the conveying cylinder and the storage cylinder, a first piston cavity is formed on the side of the conveying cylinder close to the storage cylinder, a first piston column is sealingly and slidably installed in the first piston cavity, a first rotating shaft is rotatably installed on the first piston column, a spiral feeding tooth is arranged on one end of the first rotating shaft, a feeding driving part is detachably installed on the first piston column, the feeding driving part and the first rotating shaft are drivingly connected through a transmission mechanism, the feeding driving part drives the first rotating shaft to rotate through the transmission mechanism, and the spiral feeding tooth cooperates with the conveying cylinder to feed.

[0006] Preferably, the transmission mechanism comprises a first transmission gear fixedly sleeved on the first rotating shaft, and a power shaft of the feeding driving part is fixedly provided with a second transmission gear engaged with the first transmission gear.

[0007] Preferably, the discharging pipe is provided with a discharging switch mechanism for opening and closing the discharging pipe.

[0008] Preferably, the heating mechanism comprises a melting cavity sleeved on the conveying cylinder close to the discharging pipe, a conical cavity is arranged on one side of the melting cavity for wrapping the conical cylinder and the discharging pipe, and a preheating cavity is arranged on the other side, a first heating wire and a second heating wire are respectively arranged in the melting cavity and the preheating cavity, the first heating wire and the second heating wire are respectively connected with a first heater and a second heater, the heating temperature of the first heater is higher than that of the second heater, and a heat conducting piece in communication with the first heating wire is arranged in the conical cavity.

[0009] Preferably, the first heating wire and the second heating wire are spirally wound on the outer wall of the conveying cylinder, and the outer rings of the melting cavity, the conical cavity and the preheating cavity are all provided with a heat preservation layer.

[0010] Preferably, an anti-backflow assembly is arranged on the end of the spiral feeding tooth close to the discharging pipe, a second driving part is detachably installed on the second mounting seat, and a pressure plate is arranged on the power end of the second driving part, and the pressure plate corresponds to the anti-backflow assembly.

[0011] As preferred, the anti-reflux assembly comprises an arc-shaped support plate mounted at the end of the spiral feeding tooth, and the end of the arc-shaped support plate is provided with a ring-shaped sealing frame, a second piston cavity is formed in the spiral feeding tooth, a piston plate is sealingly and slidably mounted in the second piston cavity, one end of the piston plate is fixedly provided with a second piston rod, and the second piston rod sealingly and slidably extends out of the spiral feeding tooth, the end of the second piston rod is fixedly provided with a sliding frame, the end of the sliding frame is provided with a tapered plugging for sealing the ring-shaped sealing frame, the other end of the piston plate is fixedly provided with a first transmission rod, and the first transmission rod slidably extends out of the spiral feeding tooth and the first rotating shaft, the first transmission rod corresponds to the pressing plate, and a first elastic component is arranged between the piston plate and the second piston cavity, for driving the tapered plugging away from the ring-shaped sealing frame.

[0012] As preferred, the first elastic component is movably sleeved on the second piston rod, and one end of the first elastic component is fixedly connected with the piston plate, and the other end of the first elastic component is arranged in the second piston cavity, a sealing groove is formed in the sliding frame, and the sealing groove corresponds to the end of the spiral feeding tooth.

[0013] As preferred, a plugging mechanism is arranged on the material conveying cylinder, for opening / closing the discharge pipe.

[0014] As preferred, the plugging mechanism comprises a mounting rod fixedly mounted at the end of the tapered cylinder, a third piston cavity is fixedly arranged on the mounting rod, a third piston rod is sealingly and slidably arranged in the third piston cavity, the end of the third piston rod is provided with a plugging head corresponding to the discharge pipe, and a second elastic component is arranged between the one end of the third piston rod and the third piston cavity, for pushing the plugging head to seal the discharge pipe, the elastic force of the second elastic component is greater than the pressure of the spiral feeding tooth on the raw material, and smaller than the pushing force of the first driving component on the raw material.

[0015] Compared with the prior art, the beneficial effects of the present application are: The preheating cavity and the melting cavity of the heating mechanism are layered to heat, the raw material is gradiently melted, the raw material is prevented from being damaged due to uneven heating, the raw material is prevented from flowing back during conveying and injection molding, the conveying continuity and the injection molding accuracy are ensured, the conveying pressure is adjusted by the first driving component, the raw material is intelligently conveyed and injected, the spiral conveying of the raw material is realized by the spiral feeding tooth, the blood clotting cup is injection molded, different production requirements can be flexibly adapted, the production efficiency and the product qualification rate are effectively improved, the overall structure is compact, the components can be detachably installed, the maintenance and repair are facilitated, the operation is convenient, the operation is stable, and the actual needs of efficient and high-quality production of the blood clotting cup can be fully met. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a perspective view of the present application; Figure 2 is a front view of the present application; Figure 3 is a front view of the present application Figure 2 is a sectional view at A-A of the present application; Figure 4 is an exploded view of the present application; Figure 5 is a perspective view of the delivery cylinder of the present application; Figure 6 is a perspective view of the heating mechanism of the present application; Figure 7 is a sectional view of the heating mechanism of the present application; Figure 8 is a perspective view of the spiral feeding tooth of the present application; Figure 9 is a perspective view of the second embodiment of the present application; Figure 10 is a sectional view of the second embodiment of the present application; Figure 11 is a perspective view of the spiral feeding tooth of the second embodiment of the present application; Figure 12 is a front view of the present application Figure 11 is an enlarged view of part B of the present application; Figure 13 is a sectional view of the spiral feeding tooth of the second embodiment of the present application; Figure 14 is a front view of the present application Figure 13 is an enlarged view of part C of the present application; Figure 15 is a structural schematic view of the blocking mechanism of the third embodiment of the present application; In the figure: 1, delivery cylinder; 2, first piston cavity; 3, conical cylinder; 4, discharge pipe; 5, discharging pipe; 6, discharging switch mechanism; 7, storage cylinder; 8, first mounting seat; 9, first driving part; 10, heating mechanism; 101, melting cavity; 102, preheating cavity; 103, first heating wire; 104, first heater; 105, second heating wire; 106, second heater; 107, conical cavity; 108, heat conducting part; 11, first piston column; 12, spiral feeding tooth; 13, first rotating shaft; 14, first transmission gear; 15, second transmission gear; 16, feeding driving part; 17, annular sealing frame; 18, sliding frame; 19, conical blocking; 20, second driving part; 21, pressing plate; 22, first transmission rod; 23, second piston cavity; 24, piston plate; 25, second piston rod; 26, first elastic part; 27, sealing groove; 28, connecting column; 29, second mounting seat; 30, mounting rod; 31, third piston cavity; 32, third piston rod; 33, blocking head; 34, second elastic part; 35, arc-shaped supporting plate; DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be apparently and completely described below with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application. Embodiment

[0018] Please refer to Figures 1-15 The present application provides a technical solution: a raw material particle conveying device for blood clotting cup production, comprising a conveying cylinder 1, a storage cylinder 7 is arranged on one side of the upper end of the conveying cylinder 1, and the storage cylinder 7 is in sealed communication with the conveying cylinder through a discharging pipe 5, a conical cylinder 3 is arranged on the storage cylinder 7 away from the storage cylinder 7, a discharging pipe 4 is fixedly arranged on the end of the conical cylinder 3, a heating mechanism 10 is wrapped on the side of the conveying cylinder 1 away from the storage cylinder 7, the conical cylinder 3 and the discharging pipe 4, for melting the conveyed raw material particles, a gap is reserved between the conveying cylinder 1 and the storage cylinder 7, a first piston cavity 2 is formed on the side of the conveying cylinder 1 close to the storage cylinder 7, a first piston column 11 is sealingly and slidably installed in the first piston cavity 2, a first rotating shaft 13 is rotatably installed on the first piston column 11, and a spiral feeding tooth 12 is arranged on one end of the first rotating shaft 13, a feeding driving part 16 is detachably installed on the first piston column 11, the feeding driving part 16 and the first rotating shaft 13 are drivingly connected through a transmission mechanism, the feeding driving part 16 drives the first rotating shaft 13 to rotate through the transmission mechanism, and the spiral feeding tooth 12 is driven to cooperate with the conveying cylinder to feed, three circumferentially uniformly distributed connecting columns 28 are fixedly arranged on the first piston column 11, a second mounting seat 29 is fixedly arranged on the connecting column 28, a first mounting seat 8 is arranged on the outer wall of the conveying cylinder, and a first driving part 9 is arranged between the first mounting seat 8 and the second mounting seat 29, for driving the first piston column 11 to move along the first piston cavity 2.

[0019] The transmission mechanism comprises a first transmission gear 14 fixedly sleeved on the first rotating shaft 13, a power shaft of the feeding driving part 16 is fixedly provided with a second transmission gear 15 engaged with the first transmission gear 14, the feeding driving part 16 is a driving motor, and is installed on the first piston column 11 through bolts and nuts, the first driving part 9 is a hydraulic cylinder, is installed on the first mounting seat 8 through bolts and nuts, and an end is installed on the second mounting seat 29 through bolts and nuts.

[0020] In actual operation: first, the blood coagulation cup production raw material particles are put into the storage cylinder 7, the raw material particles enter the conveying cylinder 1 through the feeding pipe 5, the upper feeding driving part 16 is started, the power shaft drives the second transmission gear 15 to rotate, because the second transmission gear 15 is engaged with the first transmission gear 14 on the first rotating shaft 13, the first rotating shaft 13 is driven to rotate, the spiral feeding tooth 12 on the first rotating shaft 13 rotates, and the raw material particles are conveyed to the conical cylinder 3 direction cooperating with the conveying cylinder 1, when it is needed to inject raw materials to the injection molding machine, the first driving part 9 (hydraulic cylinder) is started, the hydraulic cylinder drives the first piston column 11 to slide in the first piston cavity 2 through the first mounting seat 8, the second mounting seat 29 and the connecting column 28, the position of the first rotating shaft 13 and the spiral feeding tooth 12 is adjusted, the pressure injection is realized, and the heating mechanism 10 heats the side of the conveying cylinder 1 away from the storage cylinder 7, the conical cylinder 3 and the discharge pipe 4, so that the passing raw material particles are melted, and the melted raw material is finally discharged through the discharge pipe 4, and the injection molding is completed.

[0021] The heating mechanism 10 includes a melting cavity 101 sleeved on the conveying cylinder 1 close to the discharge pipe 4, one side of the melting cavity 101 is provided with a conical cavity 107 for wrapping the conical cylinder 3 and the discharge pipe 4, and the other side is provided with a preheating cavity 102, the melting cavity 101 and the preheating cavity 102 are respectively provided with a first heating wire 103 and a second heating wire 105, and the first heating wire 103 and the second heating wire 105 are respectively connected with a first heater 104 and a second heater 106, the heating temperature of the first heater 104 is higher than that of the second heater 106, the conical cavity 107 is provided with a heat conducting piece 108 communicated with the first heating wire 103, the first heating wire 103 and the second heating wire 105 are spirally wound on the outer wall of the conveying cylinder, and the outer rings of the melting cavity 101, the conical cavity 107 and the preheating cavity 102 are all provided with a heat preservation layer.

[0022] In actual operation: the first heater 104 and the second heater 106 are started, the raw material particles in the conveying cylinder are heated through the first heating wire 103 and the second heating wire 105 respectively, the raw material particles are preheated through the second heating wire 105, and the preheated raw material particles are melted through the first heating wire 103, so as to realize the effect of layered melting, prevent the melted raw material from flowing back during injection, and affect the effect of injection molding. Embodiment

[0023] On the basis of embodiment one, as Figures 9-14As shown, the end of the spiral feeding tooth 12 close to the discharge pipe 4 is provided with an anti-backflow assembly, the second mounting seat 29 is detachably mounted with a second driving component 20, and the power end of the second driving component 20 is provided with a pressing plate 21 corresponding to the anti-backflow assembly. The second driving component 20 is a hydraulic cylinder and is mounted on the second mounting seat 29 through bolts and nuts. The anti-backflow assembly comprises an arc-shaped support plate 35 mounted on the end of the spiral feeding tooth 12, and the end of the arc-shaped support plate 35 is provided with an annular sealing frame 17. A second piston cavity 23 is formed in the spiral feeding tooth 12, and a piston plate 24 is sealingly and slidingly mounted in the second piston cavity 23. One end of the piston plate 24 is fixedly provided with a second piston rod 25 which sealingly and slidingly extends out of the spiral feeding tooth 12. The end of the second piston rod 25 is fixedly provided with a sliding frame 18, and the end of the sliding frame 18 is provided with a conical plugging 19 for sealing the annular sealing frame 17. The other end of the piston plate 24 is fixedly provided with a first transmission rod 22 which slidingly extends out of the spiral feeding tooth 12 and the first rotating shaft 13. The first transmission rod 22 corresponds to the pressing plate 21. A first elastic component 26 is arranged between the piston plate 24 and the second piston cavity 23 for driving the conical plugging 19 away from the annular sealing frame 17. The first elastic component 26 is movably sleeved on the second piston rod 25, and one end of the first elastic component 26 is fixedly connected with the piston plate 24, and the other end of the first elastic component 26 is arranged in the second piston cavity 23. A sealing groove 27 is formed in the sliding frame 18 and corresponds to the end of the spiral feeding tooth 12. The first elastic component 26 is a return spring. In actual operation: when normally conveying materials, the sliding frame 18 is driven to approach the spiral feeding tooth 12 under the action of the first elastic component 26, the end of the spiral feeding tooth 12 is inserted into the sealing groove 27, a gap is formed between the conical plugging 19 and the annular sealing frame 17, the melted raw materials are conveyed into the other side of the annular sealing frame 17 in the conveying cylinder 1 through the gap in the spiral feeding tooth 12, and the annular sealing frame 17 is completely filled. When it is needed to inject raw materials into the injection mold, the second driving component 20 is started to drive the pressing plate 21 to move, the pressing plate 21 is in contact with the first transmission rod 22, the piston plate 24 is driven to move along the second piston cavity 23 through the first transmission rod 22, the second piston rod 25 and the sliding frame 18 are driven to move through the piston plate 24, the annular sealing frame 17 is sealed through the conical plugging 19, and then the first driving component 9 is started to inject raw materials, so that the backflow phenomenon in the injection process is prevented. Embodiment

[0024] On the basis of the embodiment one or the embodiment two, such as Figure 15As shown, the feeding cylinder is provided with a blocking mechanism for opening / closing the discharge pipe 4, the blocking mechanism comprises a mounting rod 30 fixedly installed at the end of the conical cylinder 3, a third piston cavity 31 is fixedly arranged on the mounting rod 30, a third piston rod 32 is sealingly and slidably installed in the third piston cavity 31, an end of the third piston rod 32 is provided with a blocking head 33 corresponding to the discharge pipe 4, and a second elastic member 34 is arranged between the two ends and the third piston cavity 31, for pushing the blocking head 33 to seal the discharge pipe 4, the elastic force of the second elastic member 34 is greater than the pressure of the raw material conveyed by the spiral feeding tooth 12, and is less than the pushing force of the first driving member 9 on the raw material, and the second elastic member 34 is a return spring. In actual operation: when it is necessary to add material into the injection mold, the first driving member 9 is started to drive the first piston column 11 to move, the extruded raw material pushes the blocking head 33 to move, the third piston rod 32 is pushed to move along the third piston cavity 31 through the blocking head 33, and the second elastic member 34 is extruded to generate a rebound force, so as to realize the feeding function, when the feeding is completed, the pressure of the extruded raw material is reduced, the blocking head 33 is pushed to seal the discharge pipe 4 under the action of the second elastic member 34, so as to prevent the raw material in the injection mold from flowing back, and prevent the phenomenon of liquid leakage during conveying of the material. Embodiment

[0025] The discharge pipe 5 is provided with a discharge switch mechanism 6 for opening / closing the discharge pipe 5, and the discharge switch mechanism 6 is a known technology for opening or closing the raw material particles in the discharge pipe 5. Embodiment

[0026] On the basis of the third embodiment, the conical cylinder 3 is provided with a pressure detection sensor, the feeding cylinder is provided with a PLC controller, and the first driving member 9, the second driving member 20 and the feeding driving member 16 are respectively electrically connected with the PLC controller.

[0027] In actual operation: the pressure in the conical cylinder 3 is detected by the pressure detection sensor, when it reaches a first set value, the first driving member 9 is started to drive the first piston column 11 to move along the first piston cavity 2, the melted raw material is pushed to extrude the blocking head 33, so that a gap is generated between the blocking head 33 and the discharge pipe 4, and the raw material is discharged into the mold for injection through the gap, when it reaches a second set value, the first driving member 9 is started to drive the first piston column 11 to reset, so as to realize intelligent injection and material conveying.

[0028] What is not described in detail in the specification is the prior art known to those skilled in the art, although embodiments of the application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the application, the scope of the application is defined by the appended claims and their equivalents.

Claims

1. A raw material particle conveying device for blood coagulation cup production, comprising a conveying cylinder (1), wherein a storage cylinder (7) is provided on one side of the upper end of the conveying cylinder (1), and the storage cylinder (7) is sealed and connected to the conveying cylinder through a discharge pipe (5), wherein a conical cylinder (3) is provided at one end of the storage cylinder (7) away from the storage cylinder (7), and a discharge pipe (4) is fixedly provided at the end of the conical cylinder (3), characterized in that: The heating mechanism (10) is wrapped on the side of the conveying cylinder (1) away from the storage cylinder (7), the conical cylinder (3) and the discharge pipe (4), is used for melting the conveyed raw material particles, and a gap is reserved between the conveying cylinder (1) and the storage cylinder (7).

2. The raw material pellet conveying device for blood coagulation cup production according to claim 1, characterized in that: The transmission mechanism comprises a first transmission gear (14) fixedly sleeved on the first rotating shaft (13), and the power shaft of the feeding driving part (16) is fixedly provided with a second transmission gear (15) engaged with the first transmission gear (14).

3. The raw material pellet conveying device for blood coagulation cup production according to claim 2, characterized in that: The discharge pipe (5) is provided with a discharge switch mechanism (6) for opening and closing the discharge pipe (5).

4. The raw material pellet conveying device for blood coagulation cup production according to claim 2, characterized in that: The heating mechanism (10) comprises a melting cavity (101) sleeved on the conveying cylinder (1) close to the discharge pipe (4), one side of the melting cavity (101) is provided with a conical cavity (107) for wrapping the conical cylinder (3) and the discharge pipe (4), and the other side is provided with a preheating cavity (102), the melting cavity (101) and the preheating cavity (102) are respectively provided with a first heating wire (103) and a second heating wire (105), and the first heating wire (103) and the second heating wire (105) are respectively connected with a first heater (104) and a second heater (106), the heating temperature of the first heater (104) is higher than that of the second heater (106), and the conical cavity (107) is provided with a heat conducting member (108) communicated with the first heating wire (103).

5. The raw material pellet conveying device for blood coagulation cup production according to claim 4, characterized in that: The first heating wire (103) and the second heating wire (105) are both spirally wound on the outer wall of the conveying cylinder, and the outer rings of the melting cavity (101), the conical cavity (107) and the preheating cavity (102) are all provided with a heat preservation layer.

6. The raw material pellet conveying device for blood coagulation cup production according to any one of claims 1 to 5, characterized in that: The end of the spiral feeding tooth (12) close to the discharge pipe (4) is provided with an anti-backflow assembly, the second mounting seat (29) is detachably mounted with a second driving part (20), and the power end of the second driving part (20) is provided with a pressing plate (21) corresponding to the anti-backflow assembly.

7. The raw material pellet conveying device for blood coagulation cup production according to claim 6, characterized in that: The anti-backflow assembly comprises an arc-shaped supporting plate (35) mounted at the end of the spiral feeding tooth (12), and the end of the arc-shaped supporting plate (35) is provided with an annular sealing frame (17); a second piston cavity (23) is formed in the spiral feeding tooth (12); a piston plate (24) is sealingly and slidably mounted in the second piston cavity (23); a second piston rod (25) is fixedly arranged at one end of the piston plate (24) and sealingly and slidably extends out of the spiral feeding tooth (12); a sliding frame (18) is fixedly arranged at the end of the second piston rod (25); a tapered stopper (19) for sealing the annular sealing frame (17) is arranged at the end of the sliding frame (18); a first transmission rod (22) is fixedly arranged at the other end of the piston plate (24) and slidably extends out of the spiral feeding tooth (12) and the first rotating shaft (13); the first transmission rod (22) corresponds to the pressing plate (21); and a first elastic part (26) is arranged between the piston plate (24) and the second piston cavity (23) for driving the tapered stopper (19) away from the annular sealing frame (17).

8. The raw material pellet conveying device for blood coagulation cup production according to claim 7, characterized in that: The first elastic part (26) is movably sleeved on the second piston rod (25) and fixedly connected with the piston plate (24) at one end and arranged in the second piston cavity (23) at the other end; and a sealing groove (27) is formed in the sliding frame (18) and corresponds to the end of the spiral feeding tooth (12).

9. The raw material pellet conveying device for blood coagulation cup production according to any one of claims 1, 5 or 8, characterized in that: The feeding cylinder is provided with a sealing mechanism for opening / closing the discharge pipe (4).

10. The raw material pellet conveying device for blood coagulation cup production according to claim 9, characterized in that: The sealing mechanism comprises a mounting rod (30) fixedly mounted at the end of the tapered cylinder (3); a third piston cavity (31) is fixedly arranged on the mounting rod (30); a third piston rod (32) is sealingly and slidably mounted in the third piston cavity (31); a sealing head (33) corresponding to the discharge pipe (4) is arranged at the end of the third piston rod (32); and a second elastic part (34) is arranged between the third piston cavity (31) and the sealing head (33) for pushing the sealing head (33) to seal the discharge pipe (4); the elastic force of the second elastic part (34) is greater than the pressure of the spiral feeding tooth (12) on the raw materials and smaller than the pushing force of the first driving part (9) on the raw materials.

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