Twin-screw extrusion forming device for preparing medical polymer material

Abstract

The invention relates to the technical field of plastic processing, and discloses a double-screw extrusion forming device for preparing a medical high polymer material, which comprises a power mechanism, the power mechanism further comprises an extrusion shell, the top of the extrusion shell is fixedly connected with a support plate, when the equipment is used, a material pipe is connected with a material receiving pipe, and a power supply of a power motor is switched on; when the power motor drives the threaded columns to start the machining procedure, materials in the extrusion shell are gradually melted and move towards the other end under conveying of the threaded columns, in the process, the clamping grooves enter gaps between the threaded columns, the state shown in the figure 4 is shown, and in the process, due to the fact that the two sides of the clamping grooves are limited by the outer walls of the threaded columns, the materials can be extruded out of the extrusion shell. The clamping groove moves in the direction of the bubble removing mechanism along with spiral of the threaded column, and in the process, due to the fact that the transverse position of the clamping groove is not changed, the threaded column rotates continuously, and the clamping groove scrapes molten raw materials adhering to the outer wall of the threaded column and the outer wall of the driving column.

Description

Technical Field

[0001] The invention relates to the technical field of plastic processing equipment, in particular to a twin-screw extrusion molding device for preparing medical polymer materials. Background Art

[0002] With the development of the aging population, the number of patients with cardiovascular diseases in my country is increasing year by year, and the demand for medical polymer materials is increasing day by day. Medical polymer materials refer to polymer materials used to manufacture human internal organs, external organs, drug dosage forms and medical devices, and their sources include natural biopolymer materials and synthetic biopolymer materials. Natural medical polymer materials come from nature, including cellulose, chitin, hyaluronic acid, collagen, gelatin and sodium alginate; synthetic medical polymer materials are polymer materials for medical use that are artificially synthesized by chemical methods. Currently, polyurethane, silicone rubber, polyester fiber, polyvinyl pyrrolidone, polyether ether ketone, polymethyl methacrylate, polyvinyl alcohol, polylactic acid, polyethylene, etc. are commonly used.

[0003] Among them, medical materials have stricter restrictions on materials. During the process of plastic extrusion through the threaded rod, due to the different viscosities of each material after melting, some viscous materials will stick to the inner wall of the shell, causing an imbalance in the proportion of some materials in the molten plastic, affecting the production effect of the equipment. The following solutions are proposed to address the above problems. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a twin-screw extrusion molding device for preparing medical polymer materials, including a power mechanism, which also includes an extrusion shell, a support plate is fixedly connected to the top of the extrusion shell, and a rotating rod is rotatably connected to the inner wall of the support plate. The mechanism provides an installation position for subsequent mechanisms, plays a stabilizing effect during operation, and ensures the normal operation of the equipment; The defoaming mechanism comprises a collecting box connected through the side wall of the extrusion shell, a stacking box connected through the side wall of the collecting box, and a slide rail fixedly connected to the inner wall of the stacking box; The feed cleaning mechanism comprises a feed pipe connected through the top of the extrusion shell, the top of the feed pipe is rotatably connected with a rotating ring, the top of the rotating ring is rotatably connected with a receiving pipe, and the top of the rotating ring is fixedly connected with a stirring frame.

[0005] Preferably, the power mechanism also includes a conveyor belt mounted on the outer wall of the rotating rod, a plurality of slots are fixedly connected to the side walls of the conveyor belt, a driving column is rotatably connected to the inner wall of the extrusion shell, and a threaded column is fixedly connected to the outer wall of the driving column. Utilizing the characteristic of the regular rotation of the above-mentioned slots, a rotating ring and a stirring frame are arranged inside the equipment. When the slots are displaced, the outer walls of the slots will contact the outer walls of the rotating ring. The rotating ring will be blocked and will rotate along the top of the feed pipe. At the same time, the discharge port will drive the internal stirring frame to rotate and stir the raw materials inside the receiving pipe to avoid the accumulation of granular raw materials inside the receiving pipe due to mutual squeezing when the raw materials pass through the receiving pipe, thereby affecting the feeding effect of the equipment.

[0006] Preferably, the power mechanism also includes a support frame fixedly connected to the bottom of the extrusion shell, a reinforcement ring is fixedly connected to the outer wall of the extrusion shell, a power motor is fixedly connected to the side wall of the extrusion shell, and the output end of the power motor is fixedly connected to the side wall of the driving column. When the power motor drives the threaded column to start the processing process, the material inside the extrusion shell will gradually melt and move to the other end under the conveyance of the threaded column. In this process, the card slot will enter the gap between the threaded columns, presenting a Figure 4 In the state shown, during this process, since both sides of the slot are restricted by the outer wall of the threaded column, the slot will follow the spiral of the threaded column and move in the direction of the defoaming mechanism. During this process, since the lateral position of the slot remains unchanged and the threaded column keeps rotating, the slot will scrape the molten raw materials stuck to the outer wall of the threaded column and the driving column. Through the application of the above components, the slot can effectively solve the problem of materials sticking to the outer wall of the threaded column during the heating and transmission process of the equipment, thereby ensuring the accuracy of the material ratio each time the equipment is conveyed.

[0007] Preferably, the defoaming mechanism also includes a slide rod slidably connected to the inner wall of the slide rail, and the end of the drive column away from the power motor is fixedly connected to a drive block, and the outer wall of the drive block is slidably connected to the inner wall of the slide rod.

[0008] Preferably, the defoaming mechanism also includes a discharge port opened on the side wall of the stacking box, a U-shaped rod is fixedly connected to the top of the sliding rod, a sliding baffle is fixedly connected to the end of the U-shaped rod away from the sliding rod, the outer wall of the sliding baffle is slidably connected to the outer wall of the discharge port, and a push plate is fixedly connected to the side wall of the sliding baffle.

[0009] Preferably, the defoaming mechanism also includes an air pressure cylinder connected to the top of the collecting box, a piston plate is slidably connected to the inner wall of the air pressure cylinder, a sliding rod is fixedly connected to the bottom of the piston plate, the end of the sliding rod away from the piston plate is fixedly connected to the top of the pushing plate, and a plurality of air inlets are provided on the top of the piston plate. Utilizing the characteristic that the cross section of the above-mentioned driving column will rotate regularly when in use, a defoaming mechanism is arranged inside the equipment, and when the molten raw material is transmitted to the inner wall of the stacking box through the threaded column, the driving column drives the driving block to rotate, and at this time the driving block drives the U-shaped rod and the sliding baffle to move upward through the sliding rod, so that a gap is formed between the sliding baffle and the discharge port, and at this time the solution inside the stacking box will enter the collecting box through the discharge port, and as the driving block The driving block drives the U-shaped rod and the sliding baffle plate to move downward through the sliding rod, and forces the sliding baffle plate and the discharge port to be in a closed state. When the sliding baffle plate moves downward, the sliding baffle plate drives the sliding rod to move downward through the pushing plate, and the sliding rod drives the piston plate to move downward along the inner wall of the air pressure cylinder. In this process, the reset spring rod will drive the blocking block to block the air inlet, so that a closed space is formed at the bottom of the piston plate and inside the collecting box. The molten material will block the outlet at the bottom of the collecting box because of its large quantity. As the piston plate moves downward, the air pressure inside the closed space increases, which will force the bubbles inside the solution in the collecting box to expand and burst. The remaining bubbles in the molten raw material are separated from the solution in the above manner to prevent the bubbles in the solution from affecting the quality of subsequent products.

[0010] Preferably, the defoaming mechanism also includes a support plate fixedly connected to the outer wall of the piston plate, a return spring rod is slidably connected to the inner wall of the through hole of the support plate, and a blocking block is fixedly connected to the top of the return spring rod.

[0011] Preferably, the feed cleaning mechanism also includes a driving bracket fixedly connected to the side wall of the support plate, a cleaning belt is rotatably connected to the outer wall of the driving bracket, a receiving gear is fixedly connected to the outer wall of the driving column, and a driving gear is fixedly connected to the outer wall of the rotating rod, and the outer wall of the driving gear is meshingly connected with the outer wall of the receiving gear. Utilizing the characteristic that the above-mentioned slot follows the rotation of the threaded column to produce displacement, a rotating rod is arranged inside the equipment, wherein when the slot is displaced, it will drive the transmission belt to displace synchronously, and the displacement of the transmission belt will force the rotating rod to rotate, and the rotating rod drives the receiving gear to rotate through the driving gear, and the receiving gear drives the cleaning belt to rotate through the driving bracket, and the cleaning belt is affected by the receiving gear and the driving gear, and the direction of rotation is opposite to the direction of rotation of the slot. Through the application of the above-mentioned components, the cleaning belt and the slot are rubbed against each other, and the cleaning belt will remove excess mucus stuck to the outer wall of the slot, so as to prevent the molten raw material from cooling and hardening on the outer wall of the slot, affecting the subsequent cleaning effect of the slot.

[0012] The present invention has the following beneficial effects: (1) The present invention utilizes the characteristic that the threads on the outer wall of the threaded column will generate a conveying force during the rotation process. A conveyor belt and a card slot are arranged inside the device. When the device is used, the device is installed at the desired position, the material pipe is connected to the material receiving pipe, and the power supply of the power motor is turned on. When the power motor drives the threaded column to start the processing process, the material inside the extrusion shell will gradually melt and move to the other end under the conveyance of the threaded column. During this process, the card slot will enter the gap between the threaded columns, presenting a Figure 4 In the state shown, during this process, since both sides of the slot are restricted by the outer wall of the threaded column, the slot will follow the spiral of the threaded column and move in the direction of the defoaming mechanism. During this process, since the lateral position of the slot remains unchanged and the threaded column keeps rotating, the slot will scrape the molten raw materials stuck to the outer wall of the threaded column and the driving column. Through the application of the above components, the slot can effectively solve the problem of materials sticking to the outer wall of the threaded column during the heating and transmission process of the equipment, thereby ensuring the accuracy of the material ratio each time the equipment is conveyed.

[0013] (2) The present invention utilizes the characteristic that the above-mentioned slot follows the rotation of the threaded column to generate displacement, and a rotating rod is arranged inside the device. When the slot is displaced, it will drive the transmission belt to synchronously displace, and the displacement of the transmission belt will force the rotating rod to rotate. The rotating rod drives the receiving gear to rotate through the driving gear, and the receiving gear drives the cleaning belt to rotate through the driving bracket. The cleaning belt is affected by the receiving gear and the driving gear, and the direction of rotation is opposite to the rotation direction of the slot. Through the application of the above-mentioned components, the cleaning belt and the slot are rubbed against each other, and the cleaning belt will remove excess mucus stuck to the outer wall of the slot, thereby preventing the molten raw material from cooling and hardening on the outer wall of the slot, which affects the subsequent cleaning effect of the slot.

[0014] (3) The present invention utilizes the characteristic of the regular rotation of the above-mentioned slot, and a rotating ring and a stirring frame are arranged inside the equipment. When the slot is displaced, the outer wall of the slot will contact the outer wall of the rotating ring. The rotating ring will be blocked and will rotate along the top of the feed pipe. At the same time, the discharge port drives the internal stirring frame to rotate and stir the raw materials in the receiving pipe, so as to avoid the granular raw materials from being squeezed against each other when passing through the receiving pipe, causing the raw materials to accumulate inside the receiving pipe, thereby affecting the feeding effect of the equipment.

[0015] (4) The present invention utilizes the characteristic that the cross section of the driving column will rotate regularly when in use, and a defoaming mechanism is provided inside the equipment. When the molten raw material is transferred to the inner wall of the stacking box through the threaded column, the driving column drives the driving block to rotate. At this time, the driving block drives the U-shaped rod and the sliding baffle to move upward through the sliding rod, so that a gap is formed between the sliding baffle and the discharge port. At this time, the solution in the stacking box will enter the collection box through the discharge port. As the driving block rotates, the driving block drives the U-shaped rod and the sliding baffle to move downward through the sliding rod, and forces the sliding baffle and the discharge port to be in a closed state. When the sliding baffle moves downward, the sliding baffle drives the sliding rod to move downward through the push plate, and the sliding rod drives the piston plate to move downward along the inner wall of the air pressure cylinder. In this process, the return spring rod will drive the blocking block to block the air inlet, so that the bottom of the piston plate and the inside of the collecting box form a closed space, wherein the molten material will block the outlet at the bottom of the collecting box due to its large quantity, and as the piston plate moves downward, the air pressure inside the closed space will increase, forcing the bubbles inside the solution in the collecting box to expand and burst, and the remaining bubbles inside the molten raw material will be separated from the solution in the above manner, to prevent the bubbles inside the solution from affecting the quality of subsequent products. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the internal components of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall structure of the present invention; Figure 3 It is a schematic diagram of the power mechanism of the present invention; Figure 4 For the present invention Figure 3 A magnified schematic diagram of B; Figure 5 It is a schematic diagram of the internal components of the defoaming mechanism of the present invention; Figure 6 For the present invention Figure 5 Schematic diagram of middle A; Figure 7 This is a schematic diagram of the internal components of the feed cleaning mechanism of the present invention; Figure 8 It is a cross-sectional schematic diagram of the feed cleaning mechanism of the present invention.

[0018] In the accompanying drawings, the components represented by the reference numerals are listed as follows: In the figure: 1. power mechanism; 101. extrusion shell; 102. support plate; 103. rotating rod; 104. transmission belt; 105. card slot; 106. driving column; 107. threaded column; 108. support frame; 109. reinforcing ring; 110. power motor; 2. defoaming mechanism; 201. collection box; 202. stacking box; 203. slide rail; 204. slide rod; 205. driving block; 206. discharge port; 207. U-shaped rod ; 208, sliding baffle; 209, pushing plate; 210, air pressure cylinder; 211, piston plate; 212, sliding rod; 213, air inlet; 214, supporting plate; 215, reset spring rod; 216, blocking block; 3, feed cleaning mechanism; 301, driving bracket; 302, cleaning belt; 303, receiving gear; 304, driving gear; 305, feed pipe; 306, rotating ring; 307, stirring frame; 308, receiving pipe. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] For example, see Figure 1 - Figure 4 The present invention is a twin-screw extrusion molding device for preparing medical polymer materials, including a power mechanism 1, the power mechanism 1 also includes an extrusion shell 101, the top of the extrusion shell 101 is fixedly connected to a support plate 102, and the inner wall of the support plate 102 is rotatably connected to a rotating rod 103. The mechanism provides an installation position for subsequent mechanisms, which plays a stabilizing effect during operation to ensure the normal operation of the equipment; The defoaming mechanism 2 includes a collecting box 201 connected to the side wall of the extrusion housing 101, a stacking box 202 connected to the side wall of the collecting box 201, and a slide rail 203 fixedly connected to the inner wall of the stacking box 202; The feed cleaning mechanism 3 includes a feed pipe 305 connected to the top of the extrusion shell 101, the top of the feed pipe 305 is rotatably connected to a rotating ring 306, the top of the rotating ring 306 is rotatably connected to a receiving pipe 308, and the top of the rotating ring 306 is fixedly connected to a stirring frame 307.

[0021] The power mechanism 1 also includes a conveyor belt 104 sleeved on the outer wall of the rotating rod 103, and a plurality of slots 105 are fixedly connected to the side wall of the conveyor belt 104. A driving column 106 is rotatably connected to the inner wall of the extrusion shell 101, and a threaded column 107 is fixedly connected to the outer wall of the driving column 106. Utilizing the regular rotation characteristics of the above-mentioned slots 105, a rotating ring 306 and a stirring frame 307 are arranged inside the equipment. When the slots 105 are displaced, the outer wall of the slots 105 will contact the outer wall of the rotating ring 306. The rotating ring 306 will be blocked and will rotate along the top of the feed pipe 305. At the same time, the discharge port 206 drives the internal stirring frame 307 to rotate and stir the raw materials in the receiving pipe 308 to avoid the granular raw materials from being squeezed by each other when passing through the receiving pipe 308, causing the raw materials to accumulate inside the receiving pipe 308, thereby affecting the feeding effect of the equipment.

[0022] The power mechanism 1 also includes a support frame 108 fixedly connected to the bottom of the extrusion shell 101, a reinforcement ring 109 fixedly connected to the outer wall of the extrusion shell 101, and a power motor 110 fixedly connected to the side wall of the extrusion shell 101. The output end of the power motor 110 is fixedly connected to the side wall of the driving column 106. When the power motor 110 drives the threaded column 107 to start the processing process, the material inside the extrusion shell 101 will gradually melt and move to the other end under the conveyance of the threaded column 107. In this process, the slot 105 will enter the gap between the threaded columns 107, presenting as shown in FIG. Figure 4 In the state shown, during this process, since both sides of the slot 105 are restricted by the outer wall of the threaded column 107, the slot 105 will follow the spiral of the threaded column 107 and move in the direction of the defoaming mechanism 2. During this process, since the lateral position of the slot 105 remains unchanged and the threaded column 107 continues to rotate, the slot 105 will scrape the molten raw material stuck to the outer wall of the threaded column 107 and the driving column 106. Through the application of the above-mentioned components, during the heating and transmission process of the equipment, the slot 105 can effectively solve the problem of material sticking to the outer wall of the threaded column 107, thereby ensuring the accuracy of the material ratio each time the equipment is transported.

[0023] For example 2, please refer to Figure 5 - Figure 8 The present invention is a twin-screw extrusion molding device for preparing medical polymer materials. On the basis of embodiment one, the defoaming mechanism 2 also includes a slide rod 204 slidably connected to the inner wall of the slide rail 203, and the end of the drive column 106 away from the power motor 110 is fixedly connected to the drive block 205, and the outer wall of the drive block 205 is slidably connected to the inner wall of the slide rod 204.

[0024] The defoaming mechanism 2 also includes a discharge port 206 opened on the side wall of the stacking box 202, a U-shaped rod 207 is fixedly connected to the top of the sliding rod 204, and a sliding baffle 208 is fixedly connected to the end of the U-shaped rod 207 away from the sliding rod 204, the outer wall of the sliding baffle 208 is slidably connected to the outer wall of the discharge port 206, and a push plate 209 is fixedly connected to the side wall of the sliding baffle 208.

[0025] The defoaming mechanism 2 also includes an air pressure cylinder 210 which is connected to the top of the collecting box 201. A piston plate 211 is slidably connected to the inner wall of the air pressure cylinder 210. A sliding rod 212 is fixedly connected to the bottom of the piston plate 211. The end of the sliding rod 212 away from the piston plate 211 is fixedly connected to the top of the pushing plate 209. A plurality of air inlets 213 are provided on the top of the piston plate 211. The defoaming mechanism 213 is provided inside the equipment by utilizing the characteristic that the cross section of the above-mentioned driving column 106 will rotate regularly when in use. When the molten raw material is transmitted to the inner wall of the stacking box 202 through the threaded column 107, the driving column 106 drives the driving block 205 to rotate. At this time, the driving block 205 drives the U-shaped rod 207 and the sliding baffle 208 to move upward through the sliding rod 204, so that a gap is formed between the sliding baffle 208 and the discharge port 206. At this time, the solution inside the stacking box 202 will enter the collecting box 201 through the discharge port 206. As the driving block 205 rotates, the driving block 205 drives the U-shaped rod 207 and the sliding baffle 208 to move downward through the sliding rod 204, and forces the sliding baffle 208 and the discharge port 206 to be in a closed state. When the sliding baffle 208 moves downward, the sliding baffle 208 drives the sliding rod 212 to move downward through the pushing plate 209, and the sliding rod 212 drives the piston plate 211 to move downward along the inner wall of the air pressure cylinder 210. In this process, the return spring rod 215 will drive the blocking block 216 to block the air inlet 213, so that the bottom of the piston plate 211 and the inside of the collecting box 201 form a closed space, wherein the molten material will block the outlet at the bottom of the collecting box 201 due to its large quantity, and as the piston plate 211 moves downward, the air pressure inside the closed space increases, forcing the bubbles inside the solution of the collecting box 201 to expand and rupture, and the remaining bubbles inside the molten raw material are separated from the solution in the above manner to prevent the bubbles inside the solution from affecting the quality of subsequent products.

[0026] The defoaming mechanism 2 also includes a support plate 214 fixedly connected to the outer wall of the piston plate 211 , a return spring rod 215 is slidably connected to the inner wall of the through hole of the support plate 214 , and a blocking block 216 is fixedly connected to the top of the return spring rod 215 .

[0027] The feeding cleaning mechanism 3 also includes a driving bracket 301 fixedly connected to the side wall of the support plate 102, the outer wall of the driving bracket 301 is rotatably connected to the cleaning belt 302, the outer wall of the driving column 106 is fixedly connected to the receiving gear 303, the outer wall of the rotating rod 103 is fixedly connected to the driving gear 304, the outer wall of the driving gear 304 is meshed with the outer wall of the receiving gear 303, and the above-mentioned card slot 105 follows the rotation of the threaded column 107 to generate displacement. A rotating rod 103 is arranged inside the device, wherein the card slot 105 will drive the transmission belt 104 to synchronously displace when it is displaced, and the displacement of the transmission belt 104 will The rotating rod 103 is forced to rotate, and the rotating rod 103 drives the receiving gear 303 to rotate through the driving gear 304. The receiving gear 303 drives the cleaning belt 302 to rotate through the driving bracket 301. The cleaning belt 302 is affected by the receiving gear 303 and the driving gear 304, and the direction of rotation is opposite to the rotation direction of the card slot 105. Through the application of the above components, the cleaning belt 302 and the card slot 105 are rubbed against each other, and the cleaning belt 302 will remove the excess mucus stuck to the outer wall of the card slot 105, so as to prevent the molten raw material from cooling and hardening on the outer wall of the card slot 105, which affects the subsequent cleaning effect of the card slot 105.

[0028] A specific application of this embodiment is: when using the device, the device is installed at a desired position, the material pipe is connected to the material receiving pipe 308, and the power supply of the power motor 110 is turned on. When the power motor 110 drives the threaded column 107 to start the processing process, the material inside the extrusion housing 101 will gradually melt and move to the other end under the conveyance of the threaded column 107. In this process, the card slot 105 will enter the gap between the threaded columns 107, presenting as shown in FIG. Figure 4 In the state shown, during this process, since both sides of the slot 105 are restricted by the outer wall of the threaded column 107, the slot 105 will follow the spiral of the threaded column 107 and move in the direction of the defoaming mechanism 2. During this process, since the lateral position of the slot 105 remains unchanged and the threaded column 107 continues to rotate, the slot 105 will scrape the molten raw material stuck to the outer wall of the threaded column 107 and the driving column 106. Through the application of the above-mentioned components, during the heating and transmission process of the equipment, the slot 105 can effectively solve the problem of material sticking to the outer wall of the threaded column 107, thereby ensuring the accuracy of the material ratio each time the equipment is transported.

[0029] Taking advantage of the characteristic that the slot 105 rotates and moves along with the threaded column 107, a rotating rod 103 is provided inside the device. When the slot 105 moves, it will drive the transmission belt 104 to move synchronously, and the displacement of the transmission belt 104 will force the rotating rod 103 to rotate. The rotating rod 103 drives the receiving gear 303 to rotate through the driving gear 304. The receiving gear 303 drives the cleaning belt 302 to rotate through the driving bracket 301. The cleaning belt 302 is affected by the receiving gear 303 and the driving gear 304, and the direction of rotation is opposite to the rotation direction of the slot 105. Through the application of the above components, the cleaning belt 302 and the slot 105 rub against each other, and the cleaning belt 302 removes the adhesive on the slot 105. 5, to prevent the molten raw material from cooling and hardening on the outer wall of the slot 105, which would affect the subsequent cleaning effect of the slot 105. By utilizing the regular rotation of the slot 105, a rotating ring 306 and a stirring frame 307 are arranged inside the device. When the slot 105 moves, the outer wall of the slot 105 will contact the outer wall of the rotating ring 306. The rotating ring 306 will rotate along the top of the feed pipe 305 when blocked. At the same time, the discharge port 206 drives the internal stirring frame 307 to rotate and stir the raw material in the receiving pipe 308, so as to prevent the granular raw material from being squeezed by each other when passing through the receiving pipe 308, causing the raw material to accumulate inside the receiving pipe 308, which would affect the feeding effect of the device.

[0030] Taking advantage of the characteristic that the cross section of the driving column 106 will rotate regularly when in use, a defoaming mechanism 2 is provided inside the equipment. When the molten raw material is transferred to the inner wall of the stacking box 202 through the threaded column 107, the driving column 106 drives the driving block 205 to rotate. At this time, the driving block 205 drives the U-shaped rod 207 and the sliding baffle 208 to move upward through the sliding rod 204, so that a gap is formed between the sliding baffle 208 and the discharge port 206. At this time, the solution in the stacking box 202 will enter the collection box 201 through the discharge port 206. As the driving block 205 rotates, the driving block 205 drives the U-shaped rod 207 and the sliding baffle 208 to move downward through the sliding rod 204, and forces the sliding baffle 208 to be at the discharge port 206. In a closed state, when the sliding baffle 208 moves downward, the sliding baffle 208 drives the sliding rod 212 to move downward through the push plate 209, and the sliding rod 212 drives the piston plate 211 to move downward along the inner wall of the air pressure cylinder 210. During this process, the return spring rod 215 will drive the blocking block 216 to block the air inlet 213, so that the bottom of the piston plate 211 and the inside of the collecting box 201 form a closed space, wherein the molten material will block the outlet at the bottom of the collecting box 201 due to its large quantity, and as the piston plate 211 moves downward, the air pressure inside the closed space increases, which will force the bubbles inside the solution of the collecting box 201 to expand and burst, and the remaining bubbles inside the molten raw material are separated from the solution in the above manner to prevent the bubbles inside the solution from affecting the quality of subsequent products.

[0031] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A twin-screw extrusion molding device for preparing medical polymer materials, comprising a power mechanism (1), the power mechanism (1) also comprising an extrusion shell (101), the top of the extrusion shell (101) is fixedly connected to a support plate (102), the inner wall of the support plate (102) is rotatably connected to a rotating rod (103), characterized in that: Also includes: A defoaming mechanism (2), the defoaming mechanism (2) comprising a collecting box (201) connected through the side wall of the extrusion shell (101), a stacking box (202) connected through the side wall of the collecting box (201), and a slide rail (203) fixedly connected to the inner wall of the stacking box (202); A feed cleaning mechanism (3), the feed cleaning mechanism (3) comprising a feed pipe (305) connected through the top of the extrusion shell (101), the top of the feed pipe (305) being rotatably connected to a rotating ring (306), the top of the rotating ring (306) being rotatably connected to a receiving pipe (308), and the top of the rotating ring (306) being fixedly connected to a stirring frame (307).

2. The twin-screw extrusion molding device for preparing a medical polymer material according to claim 1, characterized in that: The power mechanism (1) further comprises a transmission belt (104) sleeved on the outer wall of the rotating rod (103), a plurality of slots (105) being fixedly connected to the side wall of the transmission belt (104), a driving column (106) being rotatably connected to the inner wall of the extrusion housing (101), and a threaded column (107) being fixedly connected to the outer wall of the driving column (106).

3. The twin-screw extrusion molding device for preparing a medical polymer material according to claim 2, characterized in that: The power mechanism (1) further comprises a support frame (108) fixedly connected to the bottom of the extruded shell (101); a reinforcement ring (109) is fixedly connected to the outer wall of the extruded shell (101); a power motor (110) is fixedly connected to the side wall of the extruded shell (101); and an output end of the power motor (110) is fixedly connected to the side wall of the driving column (106).

4. The twin-screw extrusion molding device for preparing a medical polymer material according to claim 3, characterized in that: The defoaming mechanism (2) further comprises a slide rod (204) slidably connected to the inner wall of the slide rail (203); one end of the drive column (106) away from the power motor (110) is fixedly connected to a drive block (205); and an outer wall of the drive block (205) is slidably connected to the inner wall of the slide rod (204).

5. The twin-screw extrusion molding device for preparing medical polymer materials according to claim 4, characterized in that: The defoaming mechanism (2) further comprises a discharge port (206) opened on the side wall of the stacking box (202); a U-shaped rod (207) is fixedly connected to the top of the sliding rod (204); an end of the U-shaped rod (207) away from the sliding rod (204) is fixedly connected to a sliding baffle (208); an outer wall of the sliding baffle (208) is slidably connected to an outer wall of the discharge port (206); and a pushing plate (209) is fixedly connected to the side wall of the sliding baffle (208).

6. A twin-screw extrusion molding device for preparing a medical polymer material according to claim 5, characterized in that: The defoaming mechanism (2) further comprises an air pressure cylinder (210) connected to the top of the collection box (201), a piston plate (211) being slidably connected to the inner wall of the air pressure cylinder (210), a sliding rod (212) being fixedly connected to the bottom of the piston plate (211), an end of the sliding rod (212) away from the piston plate (211) being fixedly connected to the top of the push plate (209), and a plurality of air inlets (213) being provided on the top of the piston plate (211).

7. A twin-screw extrusion molding device for preparing a medical polymer material according to claim 6, characterized in that: The defoaming mechanism (2) further comprises a support plate (214) fixedly connected to the outer wall of the piston plate (211), a return spring rod (215) being slidably connected to the inner wall of the through hole of the support plate (214), and a blocking block (216) being fixedly connected to the top of the return spring rod (215).

8. The twin-screw extrusion molding device for preparing medical polymer materials according to claim 7, characterized in that: The feed cleaning mechanism (3) further comprises a driving bracket (301) fixedly connected to the side wall of the support plate (102); a cleaning belt (302) is rotatably connected to the outer wall of the driving bracket (301); a receiving gear (303) is fixedly connected to the outer wall of the driving column (106); a driving gear (304) is fixedly connected to the outer wall of the rotating rod (103); and the outer wall of the driving gear (304) is meshingly connected to the outer wall of the receiving gear (303).

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