Extrusion forming device for producing medical polymer material

Abstract

The invention relates to the technical field of extrusion forming devices for medical high polymer material production, and discloses an extrusion forming device for medical high polymer material production, which comprises an equipment shell, a feeding hopper is fixedly connected right above one end of the equipment shell, and a plurality of supporting legs are fixedly connected to the bottom of the equipment shell. And the side wall of the equipment shell is fixedly connected with a driving motor. By arranging the scraping mechanism, when an extrusion spiral blade rotates to extrude a molten high polymer material in an equipment shell to an extrusion head, the temperature of the high polymer material located on the inner wall of the extrusion head is lower than that of the high polymer material away from the inner wall of the extrusion head, and when the high polymer material passes through the extrusion head, the temperature of the high polymer material is reduced; the temperature of the raw materials subjected to pressure forming is not uniform, so that the output rotating shaft rotates to drive the connecting base to rotate, the connecting base rotates to drive the stirring rod to rotate, and the stirring rod rotates to drive the scraping arc plate to scrape the inner wall of the extrusion head.

Description

Technical Field

[0001] The invention relates to the technical field of extrusion molding equipment for producing medical polymer materials, in particular to an extrusion molding device for producing medical polymer materials. Background Art

[0002] Medical polymer materials refer to polymer materials used to manufacture human internal organs, external organs, drug dosage forms and medical devices. Their sources include natural biopolymer materials and synthetic biopolymer materials. Natural medical polymer materials come from nature, while synthetic medical polymer materials are polymer materials for medical use that are artificially synthesized by chemical methods. Commonly used polymer materials include chitin, collagen, silicone rubber and polyurethane. Medical polymer materials need to be extruded at high temperature during the production and processing of infusion hoses.

[0003] Extrusion molding devices under the existing technology usually heat and melt medical polymer particles, and then extrude and shape the polymer solution through an extrusion mechanism. However, when extruding the molten polymer material, since a cooling mechanism is often provided near the extrusion head, this will cause the temperature of the solution close to the inner wall of the extrusion head to be lower than the temperature of the solution far from the inner wall of the extrusion head. This will cause temperature differences in various parts of the extruded hose, resulting in uneven cooling and solidification of the hose by the cooling device, resulting in the quality of the produced hose not meeting the standards. Summary of the invention

[0004] The object of the present invention is to provide an extrusion molding device for producing medical polymer materials to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is an extrusion molding device for the production of medical polymer materials, comprising an equipment housing, a feed hopper is fixedly connected to the top of one end of the equipment housing, a plurality of support legs are fixedly connected to the bottom of the equipment housing, a driving motor is fixedly connected to the side wall of the equipment housing, an output shaft is fixedly connected to the output end of the driving motor, an extrusion spiral blade is fixedly connected to the side wall of the output shaft, an extrusion head is fixedly connected to the end of the equipment housing away from the driving motor, and further comprising: The heating mechanism includes a transmission belt which is connected to the output shaft near the driving motor. The outer wall of the equipment shell is fixedly connected to a plurality of support frames, and a reciprocating threaded rod is rotatably penetrated through the support frame. The end of the transmission belt away from the output shaft is connected to the reciprocating threaded rod.

[0006] Furthermore, the heating mechanism also includes a sliding groove opened on the side wall of the support frame, a sliding rod is slidably connected inside the sliding groove, one end of the sliding rod close to the support frame is rotatably connected to the reciprocating threaded rod, and one end of the sliding rod away from the reciprocating threaded rod is fixedly connected to an electric heating ring, the electric heating ring is slidably connected to the outer wall of the feed hopper, and a number of connecting columns are fixedly connected to the electric heating ring.

[0007] Furthermore, the side wall of the equipment housing is provided with an auxiliary mechanism, which includes a heat preservation cover fixedly connected to the outer wall of the hopper, and the side wall of the electric heating ring is fixedly connected to an extrusion ring, which is slidably connected to the inner wall of the heat preservation cover.

[0008] Furthermore, the auxiliary mechanism also includes an air inlet pipe fixedly connected to the end of the heat preservation cover away from the driving motor, the air inlet pipe is fixedly connected to the extrusion head at the end away from the heat preservation cover, a heat preservation cavity is opened inside the extrusion head, the inner cavity of the heat preservation cover is connected with the heat preservation cavity through the air inlet pipe, and a plurality of air outlet circulation pipes are fixedly connected to the end of the extrusion head close to the driving motor, and the end of the air outlet circulation pipes away from the extrusion head is fixedly connected to the end of the heat preservation cover close to the driving motor.

[0009] Furthermore, a scraping mechanism is provided inside the device casing, and the scraping mechanism includes a connecting base fixedly connected to the end of the output shaft away from the driving motor, a plurality of grooves are provided on the connecting base, a plurality of stirring rods are fixedly connected to the end of the connecting base away from the output shaft, a scraping arc plate is fixedly connected to the end of the stirring rod away from the connecting base, and a side of the scraping arc plate away from the stirring rod is in contact with the inner wall of the extrusion head.

[0010] Furthermore, a reciprocating driving mechanism is arranged inside the device shell, and the reciprocating driving mechanism includes a plurality of pushing columns slidably connected inside the device shell, a return spring is sleeved on one end of the pushing column close to the extrusion ring, a plurality of pushing rods are fixedly connected to the middle part of the pushing column, a sliding ring is slidably connected to the connecting base, a plurality of sliding extrusion rods are fixedly connected to one side of the sliding ring, and the sliding extrusion rods are slidably connected in a groove inside the connecting base.

[0011] Furthermore, the reciprocating driving mechanism also includes an extrusion groove provided on the stirring rod, an extrusion spring is fixedly connected inside the extrusion groove, an extrusion plate is slidably connected inside the extrusion groove, a semicircular groove is provided on a side of the extrusion plate close to the sliding extrusion rod, a side of the extrusion plate away from the sliding extrusion rod is rotatably connected to a plurality of linkage rods, an end of the linkage rod away from the extrusion plate is rotatably connected to a scraper plate, and the scraper plate is slidably connected to the scraping arc plate.

[0012] Furthermore, a precooling mechanism is provided on one side of the extrusion head, and the precooling mechanism includes a cooling head fixedly connected to the end of the extrusion head away from the equipment casing, a cooling cavity is opened inside the cooling head, a water inlet is fixedly connected to the outer wall of the cooling head, a water outlet is fixedly connected to the outer wall of the cooling head, an end of the push column away from the return spring is fixedly connected to a push frame, and a side of the push frame away from the push column is fixedly connected to a plurality of stirring columns.

[0013] The present invention has the following beneficial effects: (1) The present invention provides a scraping mechanism. When the extrusion spiral blade rotates to squeeze the melted polymer material inside the device shell to the extrusion head, the temperature of the polymer material located on the inner wall of the extrusion head is lower than the temperature of the polymer material away from the inner wall of the extrusion head. When the polymer material passes through the extrusion head, the temperature of the raw material to be pressurized is uneven. Therefore, the output shaft rotates to drive the connecting base to rotate, and the connecting base rotates to drive the stirring rod to rotate. The stirring rod rotates to drive the scraping arc plate to scrape the inner wall of the extrusion head. At the same time, the sliding of the extrusion ring drives the sliding of the push column. The sliding of the push column squeezes the reset spring. At this time, the sliding of the push column drives the sliding ring between the push rods to slide along the connecting base. The ring drives the sliding extrusion rod to extrude the extrusion plate. The extrusion plate is squeezed to squeeze the extrusion spring upward along the extrusion groove. The sliding of the extrusion plate drives the scraper on the linkage rod to slide backward along the scraper arc plate. This arrangement is beneficial to transporting the low-temperature polymer material close to the pre-cooling mechanism to the side away from the pre-cooling mechanism. The repeated sliding of the scraper is beneficial to accelerate the exchange speed of the polymer solution on the inner wall of the extrusion head, and promote the exchange between the low-temperature solution on the inner wall of the extrusion head and the high-temperature solution at the center, so as to fully stir the polymer material in the extrusion head and make the solution temperature uniform, so that the temperature of each part of the pressurized hose is kept consistent, which is beneficial for each part of the hose to reach the solidification temperature at the same time.

[0014] (2) According to the present invention, when the extrusion molding device is used, the polymer raw material particles are first poured into the hopper, and the drive motor is started. The output end of the drive motor drives the output shaft to rotate, and the output shaft drives the extrusion spiral blades inside the device housing to rotate. The extrusion spiral blades rotate to transport the raw materials at the bottom of the hopper to the inside of the device housing. The polymer raw material particles are transported to the vicinity of the heating mechanism and melted. At this time, the output shaft rotates to drive the transmission belt to rotate, and the transmission belt rotates to drive the reciprocating threaded rod on the support frame to rotate. The reciprocating threaded rod rotates to drive the electric heating ring on the sliding rod to slide back and forth along the outer wall of the device housing. This arrangement is conducive to the electric heating ring to uniformly heat the polymer particles inside the device housing, and avoids the electric heating ring heating the same part of the outer wall of the device housing for a long time, which causes the polymer particles on the inner wall of the device housing to burn.

[0015] (3) The present invention sets an auxiliary mechanism. When the transmission belt rotates, the reciprocating threaded rod on the support frame rotates. The rotation of the reciprocating threaded rod drives the electric heating ring on the sliding rod to slide back and forth along the outer wall of the equipment shell. The electric heating ring drives the extrusion ring to slide along the inner wall of the insulation cover. The high-temperature gas inside the insulation cover enters the insulation chamber inside the extrusion head through the air inlet pipe. At this time, the gas inside the insulation chamber returns to the inside of the insulation cover through the air outlet circulation pipe. The high-temperature air inside the insulation cover is transported to the inside of the extrusion head, which is beneficial to preheating the extrusion head. At the same time, the extrusion head is away from the heat source to prevent the polymer material melted at the extrusion head from solidifying, thereby affecting the stable operation of the extrusion molding device.

[0016] (4) The present invention provides a pre-cooling mechanism to fix the external cooling water pipe to the water inlet, and then fix the water outlet pipe to the water outlet. At this time, the external cooling water is input into the cooling chamber, and the sliding of the extrusion ring drives the sliding of the push column. The sliding of the push column drives the stirring column on the push frame to slide back and forth along the cooling chamber. The back and forth sliding of the stirring column is conducive to stirring the cooling water inside the cooling chamber. Such a setting is conducive to controlling the cooling water temperature inside the cooling chamber to remain uniform, so that the hose passing through the cooling head is evenly cooled.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention; Figure 3 It is a schematic diagram of the auxiliary mechanism structure of the present invention; Figure 4 For the present invention Figure 3 A magnified view of middle; Figure 5 It is a schematic diagram of the structure of the scraping mechanism of the present invention; Figure 6 For the present invention Figure 5 Enlarged view of middle B; Figure 7 This is a schematic diagram of the precooling mechanism structure of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of C in the middle.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows: In the figure: 1. Equipment housing; 11. Feed hopper; 12. Support legs; 13. Drive motor; 14. Output shaft; 15. Extrusion spiral blade; 16. Extrusion head; 2. Heating mechanism; 201. Transmission belt; 202. Support frame; 203. Reciprocating threaded rod; 204. Sliding groove; 205. Sliding rod; 206. Electric heating ring; 207. Connecting column; 3. Auxiliary mechanism; 301. Insulation cover; 302. Extrusion ring; 303. Inlet pipe; 304. Insulation chamber; 305. Exhaust circulation pipe; 4. Scraping Mechanism; 401, connecting base; 402, stirring rod; 403, scraping arc plate; 5, reciprocating driving mechanism; 501, pushing column; 502, reset spring; 503, pushing rod; 504, sliding ring; 505, sliding extrusion rod; 506, extrusion groove; 507, extrusion spring; 508, extrusion plate; 509, linkage rod; 510, scraping blade; 6, pre-cooling mechanism; 601, cooling head; 602, cooling chamber; 603, water inlet; 604, water outlet; 605, pushing frame; 606, stirring column. DETAILED DESCRIPTION

[0021] 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.

[0022] Example 1, please refer to Figure 1-Figure 4 As shown, the present invention is an extrusion molding device for the production of medical polymer materials, including an equipment housing 1, a hopper 11 is fixedly connected to the top of one end of the equipment housing 1, a plurality of support legs 12 are fixedly connected to the bottom of the equipment housing 1, a driving motor 13 is fixedly connected to the side wall of the equipment housing 1, an output shaft 14 is fixedly connected to the output end of the driving motor 13, an extrusion spiral blade 15 is fixedly connected to the side wall of the output shaft 14, an extrusion head 16 is fixedly connected to the end of the equipment housing 1 away from the driving motor 13, and further includes: The heating mechanism 2 includes a transmission belt 201 which is connected to the output shaft 14 at one end close to the driving motor 13. The outer wall of the equipment housing 1 is fixedly connected to a plurality of support frames 202. A reciprocating threaded rod 203 is rotatably penetrated through the support frames 202. The transmission belt 201 is connected to the reciprocating threaded rod 203 at one end away from the output shaft 14.

[0023] The heating mechanism 2 also includes a sliding groove 204 provided on the side wall of the support frame 202, a sliding rod 205 is slidably connected inside the sliding groove 204, one end of the sliding rod 205 close to the support frame 202 is rotatably connected to the reciprocating threaded rod 203, and one end of the sliding rod 205 away from the reciprocating threaded rod 203 is fixedly connected to an electric heating ring 206, the electric heating ring 206 is slidably connected to the outer wall of the feed hopper 11, and a plurality of connecting columns 207 are fixedly connected to the electric heating ring 206. The function of this component is that when the extrusion molding device is used, the polymer raw material particles are first poured into the feed hopper 11, the drive motor 13 is started, and the output end of the drive motor 13 drives the output shaft 14 to rotate, and the output shaft 14 drives the extruder inside the device housing 1 The pressing spiral blade 15 rotates, and the extruding spiral blade 15 rotates to transport the raw materials at the bottom of the hopper 11 to the inside of the equipment casing 1. The polymer raw material particles are transported to the vicinity of the heating mechanism 2 for melting. At this time, the output shaft 14 rotates to drive the transmission belt 201 to rotate, and the transmission belt 201 rotates to drive the reciprocating threaded rod 203 on the support frame 202 to rotate. The reciprocating threaded rod 203 rotates to drive the electric heating ring 206 on the sliding rod 205 to slide back and forth along the outer wall of the equipment casing 1. This arrangement is conducive to the electric heating ring 206 to uniformly heat the polymer particles inside the equipment casing 1, and avoid the electric heating ring 206 heating the same part of the outer wall of the equipment casing 1 for a long time, which causes the polymer particles on the inner wall of the equipment casing 1 to be scorched.

[0024] The side wall of the equipment housing 1 is provided with an auxiliary mechanism 3, which includes a heat preservation cover 301 fixedly connected to the outer wall of the hopper 11, and the side wall of the electric heating ring 206 is fixedly connected with an extrusion ring 302, which is slidably connected to the inner wall of the heat preservation cover 301.

[0025] The auxiliary mechanism 3 also includes an air inlet pipe 303 fixedly connected to the end of the heat preservation cover 301 away from the driving motor 13, the air inlet pipe 303 is fixedly connected to the extrusion head 16 at the end away from the heat preservation cover 301, and a heat preservation cavity 304 is provided inside the extrusion head 16. The inner cavity of the heat preservation cover 301 is connected with the heat preservation cavity 304 through the air inlet pipe 303, and a plurality of air outlet circulation pipes 305 are fixedly connected to the end of the extrusion head 16 close to the driving motor 13. The end of the air outlet circulation pipe 305 away from the extrusion head 16 is fixedly connected to the end of the heat preservation cover 301 close to the driving motor 13. The function of this component is to set the auxiliary mechanism 3, when the transmission belt 201 rotates to drive the reciprocating threaded rod 203 on the support frame 202 to rotate, the reciprocating threaded rod The rotation of 203 drives the electric heating ring 206 on the sliding rod 205 to slide back and forth along the outer wall of the equipment housing 1, and the electric heating ring 206 drives the extrusion ring 302 to slide along the inner wall of the insulation cover 301. The extrusion ring 302 refuels the high-temperature gas inside the insulation cover 301 and enters the insulation chamber 304 inside the extrusion head 16 through the air inlet pipe 303. At this time, the gas inside the insulation chamber 304 returns to the insulation cover 301 through the air outlet circulation pipe 305. The high-temperature air inside the insulation cover 301 is transported to the extrusion head 16, which is beneficial to preheating the extrusion head 16. At the same time, the extrusion head 16 is away from the heat source to prevent the polymer material melted at the extrusion head 16 from solidifying, thereby affecting the stable operation of the extrusion molding device.

[0026] Embodiment 2 is different from Embodiment 1 in that: Figure 1-Figure 8 As shown, a scraping mechanism 4 is arranged inside the housing 1 of the device, and the scraping mechanism 4 includes a connecting base 401 fixedly connected to the end of the output shaft 14 away from the driving motor 13, and a plurality of grooves are provided on the connecting base 401. A plurality of stirring rods 402 are fixedly connected to the end of the connecting base 401 away from the output shaft 14, and a scraping arc plate 403 is fixedly connected to the end of the stirring rod 402 away from the connecting base 401. The side of the scraping arc plate 403 away from the stirring rod 402 is in contact with the lower inner wall of the extrusion head 16. The function of this component is to provide a scraping arc plate 403 to the extruder 16. Take mechanism 4. When the extrusion spiral blade 15 rotates to extrude the melted polymer material inside the equipment housing 1 to the extrusion head 16, the temperature of the polymer material located on the inner wall of the extrusion head 16 is lower than the temperature of the polymer material far away from the inner wall of the extrusion head 16. When the polymer material passes through the extrusion head 16, it will cause the temperature of the pressurized raw material to be uneven. Therefore, the output shaft 14 rotates to drive the connecting base 401 to rotate, and the connecting base 401 rotates to drive the stirring rod 402 to rotate. The stirring rod 402 rotates to drive the scraping arc plate 403 to scrape the inner wall of the extrusion head 16.

[0027] A reciprocating driving mechanism 5 is arranged inside the device housing 1, and the reciprocating driving mechanism 5 includes a plurality of pushing columns 501 slidably connected inside the device housing 1, a return spring 502 is sleeved on one end of the pushing column 501 close to the extrusion ring 302, a plurality of pushing rods 503 are fixedly connected to the middle part of the pushing column 501, a sliding ring 504 is slidably connected to the connecting base 401, a plurality of sliding extrusion rods 505 are fixedly connected to one side of the sliding ring 504, and the sliding extrusion rods 505 are slidably connected in the groove inside the connecting base 401.

[0028] The reciprocating driving mechanism 5 also includes an extrusion groove 506 provided on the stirring rod 402, an extrusion spring 507 is fixedly connected inside the extrusion groove 506, an extrusion plate 508 is slidably connected inside the extrusion groove 506, a semicircular groove is provided on a side of the extrusion plate 508 close to the sliding extrusion rod 505, a side of the extrusion plate 508 away from the sliding extrusion rod 505 is rotatably connected to a plurality of linkage rods 509, and one end of the linkage rod 509 away from the extrusion plate 508 is rotatably connected to a scraper sheet 510, and the scraper sheet 510 is slidably connected to the scraper arc plate 403. The function of this component is that the extrusion ring 302 slides and drives the push column 501 to slide, and the push column 501 slides to squeeze the reset spring 502. At this time, the push column 501 slides and drives the sliding ring 504 between the push rods 503 to slide along the connecting base 401, and the sliding The moving ring 504 drives the sliding extrusion rod 505 to extrude the extrusion plate 508. The extrusion plate 508 is squeezed to squeeze the extrusion spring 507 upward along the extrusion groove 506. The extrusion plate 508 slides and drives the scraper 510 on the linkage rod 509 to slide backward along the scraper arc plate 403. This arrangement is beneficial to transporting the low-temperature polymer material close to the pre-cooling mechanism 6 to the side away from the pre-cooling mechanism 6. The repeated sliding of the scraper 510 is beneficial to accelerate the exchange speed of the polymer solution on the inner wall of the extrusion head 16, and promote the exchange between the low-temperature solution on the inner wall of the extrusion head 16 and the high-temperature solution at the center, so that the polymer material in the extrusion head 16 is fully stirred, and the solution temperature is uniform, so that the temperature of each part of the pressurized hose is kept consistent, which is beneficial for each part of the hose to reach the solidification temperature at the same time.

[0029] A precooling mechanism 6 is provided on one side of the extrusion head 16, and the precooling mechanism 6 includes a cooling head 601 fixedly connected to the end of the extrusion head 16 away from the device housing 1, a cooling chamber 602 is provided inside the cooling head 601, a water inlet 603 is fixedly connected to the outer wall of the cooling head 601, a water outlet 604 is fixedly connected to the outer wall of the cooling head 601, a pushing frame 605 is fixedly connected to the end of the pushing column 501 away from the reset spring 502, and a plurality of stirring columns 606 are fixedly connected to the side of the pushing frame 605 away from the pushing column 501. The function of this component is to set the precooling mechanism 6 to The external cooling water pipe is fixedly connected to the water inlet 603, and then the water outlet pipe is fixedly connected to the water outlet 604. At this time, the external cooling water is input into the cooling chamber 602, and the sliding of the extrusion ring 302 drives the pushing column 501 to slide. The pushing column 501 slides outward to drive the stirring column 606 on the pushing frame 605 to slide back and forth along the cooling chamber 602. The back and forth sliding of the stirring column 606 is conducive to stirring the cooling water inside the cooling chamber 602. This arrangement is conducive to controlling the cooling water temperature inside the cooling chamber 602 to remain uniform, so that the hose passing through the cooling head 601 is evenly cooled.

[0030] A specific application of this embodiment is: When using the extrusion molding device, first pour the polymer raw material particles into the hopper 11, start the drive motor 13, and the output end of the drive motor 13 drives the output shaft 14 to rotate, and the output shaft 14 drives the extrusion spiral blade 15 inside the equipment housing 1 to rotate. The extrusion spiral blade 15 rotates to transport the raw materials at the bottom of the hopper 11 to the inside of the equipment housing 1, and the polymer raw material particles are transported to the vicinity of the heating mechanism 2 to melt. At this time, the rotation of the output shaft 14 drives the transmission belt 201 to rotate, and the rotation of the transmission belt 201 drives the reciprocating threaded rod 203 on the support frame 202 to rotate, and the rotation of the reciprocating threaded rod 203 drives the electric heating ring 206 on the sliding rod 205 to slide back and forth along the outer wall of the equipment housing 1. This arrangement is conducive to the electric heating ring 206 to uniformly heat the polymer particles inside the equipment housing 1, and avoid the electric heating ring 206 heating the same part of the outer wall of the equipment housing 1 for a long time, resulting in the outside of the equipment The polymer particles on the inner wall of the shell 1 are scorched; by setting the auxiliary mechanism 3, when the transmission belt 201 rotates and drives the reciprocating threaded rod 203 on the support frame 202 to rotate, the reciprocating threaded rod 203 rotates and drives the electric heating ring 206 on the sliding rod 205 to slide back and forth along the outer wall of the equipment shell 1, and the electric heating ring 206 drives the extrusion ring 302 to slide along the inner wall of the heat preservation cover 301, and the extrusion ring 302 refuels the heat preservation cover 301. The high-temperature gas inside the heat preservation cover 301 enters the heat preservation chamber 304 inside the extrusion head 16 through the air inlet pipe 303, and at this time, the gas inside the heat preservation chamber 304 returns to the inside of the heat preservation cover 301 through the air outlet circulation pipe 305, and the high-temperature air inside the heat preservation cover 301 is transported to the inside of the extrusion head 16, which is beneficial to preheating the extrusion head 16. At the same time, the extrusion head 16 is away from the heat source to prevent the polymer material melted at the extrusion head 16 from solidifying, thereby affecting the stable operation of the extrusion molding device; In addition, by setting the scraping mechanism 4, when the extrusion spiral blade 15 rotates to squeeze the melted polymer material inside the device housing 1 to the extrusion head 16, the temperature of the polymer material located on the inner wall of the extrusion head 16 is lower than the temperature of the polymer material away from the inner wall of the extrusion head 16. When the polymer material passes through the extrusion head 16, it will cause the temperature of the press-formed raw material to be uneven. Therefore, the output shaft 14 rotates to drive the connecting base 401 to rotate, the connecting base 401 rotates to drive the stirring rod 402 to rotate, and the stirring rod 402 rotates to drive the scraping arc plate 403 to scrape and squeeze. At the same time, the extrusion ring 302 slides to drive the push column 501 to slide, and the push column 501 slides to squeeze the reset spring 502. At this time, the push column 501 slides to drive the sliding ring 504 between the push rod 503 to slide along the connecting base 401, and the sliding ring 504 drives the sliding extrusion rod 505 to squeeze the extrusion plate 508. The extrusion plate 508 is squeezed upward along the extrusion groove 506 to squeeze the extrusion spring 507. The extrusion plate 508 slides to drive the scraper 510 on the linkage rod 509 to slide backward along the scraping arc plate 403, so that It is beneficial to transport the low-temperature polymer material close to the precooling mechanism 6 to the side away from the precooling mechanism 6. The repeated sliding of the scraper 510 is beneficial to accelerate the exchange speed of the polymer solution on the inner wall of the extrusion head 16, and promote the exchange between the low-temperature solution on the inner wall of the extrusion head 16 and the high-temperature solution at the center, so that the polymer material in the extrusion head 16 is fully stirred, and the solution temperature is uniform, so that the temperature of each part of the press-formed hose is kept consistent, which is beneficial for each part of the hose to reach the solidification temperature at the same time; by setting the precooling mechanism 6, the external cooling water pipe It is fixedly connected to the water inlet 603, and then the water outlet pipe is fixedly connected to the water outlet 604. At this time, external cooling water is input into the cooling chamber 602, and the sliding of the extrusion ring 302 drives the pushing column 501 to slide. The pushing column 501 slides outward and drives the stirring column 606 on the pushing frame 605 to slide back and forth along the cooling chamber 602. The back and forth sliding of the stirring column 606 is conducive to stirring the cooling water inside the cooling chamber 602. This arrangement is conducive to controlling the cooling water temperature inside the cooling chamber 602 to remain uniform, so that the hose passing through the cooling head 601 is evenly cooled.

[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. An extrusion molding device for producing medical polymer materials, comprising a device housing (1), a feed hopper (11) is fixedly connected to the top of one end of the device housing (1), a plurality of support legs (12) are fixedly connected to the bottom of the device housing (1), a drive motor (13) is fixedly connected to the side wall of the device housing (1), an output shaft (14) is fixedly connected to the output end of the drive motor (13), an extrusion spiral blade (15) is fixedly connected to the side wall of the output shaft (14), and an extrusion head (16) is fixedly connected to the end of the device housing (1) away from the drive motor (13), characterized in that: Also includes: The heating mechanism (2) comprises a transmission belt (201) which is transmission-connected to one end of the output shaft (14) close to the drive motor (13); a plurality of support frames (202) are fixedly connected to the outer wall of the device housing (1); a reciprocating threaded rod (203) is rotatably penetrated through the support frame (202); and one end of the transmission belt (201) which is away from the output shaft (14) is transmission-connected to the reciprocating threaded rod (203).

2. The extrusion molding device for producing medical polymer materials according to claim 1, characterized in that: The heating mechanism (2) further comprises a sliding groove (204) provided on a side wall of the support frame (202), a sliding rod (205) being slidably connected inside the sliding groove (204), an end of the sliding rod (205) close to the support frame (202) being rotatably connected to the reciprocating threaded rod (203), an end of the sliding rod (205) away from the reciprocating threaded rod (203) being fixedly connected to an electric heating ring (206), the electric heating ring (206) being slidably connected to the outer wall of the feed hopper (11), and a plurality of connecting columns (207) being fixedly connected to the electric heating ring (206).

3. The extrusion molding device for producing medical polymer materials according to claim 2, characterized in that: The side wall of the equipment housing (1) is provided with an auxiliary mechanism (3), the auxiliary mechanism (3) comprising a heat preservation cover (301) fixedly connected to the outer wall of the hopper (11), the side wall of the electric heating ring (206) is fixedly connected to an extrusion ring (302), and the extrusion ring (302) is slidably connected to the inner wall of the heat preservation cover (301).

4. The extrusion molding device for producing medical polymer materials according to claim 3, characterized in that: The auxiliary mechanism (3) further comprises an air inlet pipe (303) fixedly connected to an end of the heat preservation cover (301) away from the drive motor (13); the end of the air inlet pipe (303) away from the heat preservation cover (301) is fixedly connected to an extrusion head (16); a heat preservation cavity (304) is provided inside the extrusion head (16); the inner cavity of the heat preservation cover (301) is connected to the heat preservation cavity (304) through the air inlet pipe (303); a plurality of air outlet circulation pipes (305) are fixedly connected to an end of the extrusion head (16) close to the drive motor (13); and an end of the air outlet circulation pipe (305) away from the extrusion head (16) is fixedly connected to an end of the heat preservation cover (301) close to the drive motor (13).

5. The extrusion molding device for producing medical polymer materials according to claim 4, characterized in that: A scraping mechanism (4) is arranged inside the device housing (1), and the scraping mechanism (4) comprises a connecting base (401) fixedly connected to an end of the output shaft (14) away from the drive motor (13), the connecting base (401) being provided with a plurality of grooves, the end of the connecting base (401) away from the output shaft (14) being fixedly connected to a plurality of stirring rods (402), the end of the stirring rod (402) away from the connecting base (401) being fixedly connected to a scraping arc plate (403), and a surface of the scraping arc plate (403) away from the stirring rod (402) being in contact with the inner wall of the extrusion head (16).

6. The extrusion molding device for producing medical polymer materials according to claim 5, characterized in that: A reciprocating driving mechanism (5) is arranged inside the device housing (1), and the reciprocating driving mechanism (5) comprises a plurality of pushing columns (501) slidably connected inside the device housing (1), a return spring (502) is sleeved on one end of the pushing column (501) close to the extrusion ring (302), a plurality of pushing rods (503) are fixedly connected to the middle of the pushing column (501), a sliding ring (504) is slidably connected to the connecting base (401), a plurality of sliding extrusion rods (505) are fixedly connected to one side of the sliding ring (504), and the sliding extrusion rods (505) are slidably connected to the groove inside the connecting base (401).

7. The extrusion molding device for producing medical polymer materials according to claim 6, characterized in that: The reciprocating driving mechanism (5) further comprises an extrusion groove (506) provided on the stirring rod (402), an extrusion spring (507) being fixedly connected inside the extrusion groove (506), an extrusion plate (508) being slidably connected inside the extrusion groove (506), a semicircular groove being provided on a side of the extrusion plate (508) close to the sliding extrusion rod (505), a plurality of linkage rods (509) being rotatably connected to a side of the extrusion plate (508) away from the sliding extrusion rod (505), a scraper plate (510) being rotatably connected to one end of the linkage rod (509) away from the extrusion plate (508), and the scraper plate (510) being slidably connected to the scraping arc plate (403).

8. The extrusion molding device for producing medical polymer materials according to claim 7, characterized in that: A precooling mechanism (6) is provided on one side of the extrusion head (16), and the precooling mechanism (6) comprises a cooling head (601) fixedly connected to an end of the extrusion head (16) away from the device housing (1), a cooling chamber (602) is provided inside the cooling head (601), a water inlet (603) is fixedly connected to the outer wall of the cooling head (601), a water outlet (604) is fixedly connected to the outer wall of the cooling head (601), a pushing frame (605) is fixedly connected to one end of the pushing column (501) away from the return spring (502), and a plurality of stirring columns (606) are fixedly connected to one side of the pushing frame (605) away from the pushing column (501).

Images