阅读说明：本技术 一种医用抗菌聚氨酯薄膜生产成型装置 (Medical antibacterial polyurethane film production forming device ) 是由 周喜峰 于 2021-09-30 设计创作，主要内容包括：本发明公开了一种医用抗菌聚氨酯薄膜生产成型装置,涉及薄膜生产成型技术领域,包括挤出机构、传送机构、成型机构,挤出机构、传送机构、成型机构依次排列设置,传送机构固定安装在挤出机构上,挤出机构和成型机构均设置在地面；本发明通过设置挤出机构,可以通过一个电机同时驱动物料的挤出和抗菌剂的喷洒,容易操作,自动化程度高；本发明通过设置成型机构,可以对聚氨酯薄膜进行多次挤压成型,成型效果好；本发明通过传送机构和成型机构的配合,可以将挤出后的薄膜运送至成型机构的上方,便于后续的成型工作；本发明通过设置成型机构,可以在聚氨酯薄膜成型后进行裁剪和收卷,自动化程度高。(The invention discloses a medical antibacterial polyurethane film production forming device, which relates to the technical field of film production forming and comprises an extrusion mechanism, a conveying mechanism and a forming mechanism, wherein the extrusion mechanism, the conveying mechanism and the forming mechanism are sequentially arranged, the conveying mechanism is fixedly arranged on the extrusion mechanism, and the extrusion mechanism and the forming mechanism are both arranged on the ground; by arranging the extrusion mechanism, the extrusion of the materials and the spraying of the antibacterial agent can be simultaneously driven by one motor, so that the operation is easy and the automation degree is high; by arranging the forming mechanism, the polyurethane film can be extruded and formed for many times, and the forming effect is good; according to the invention, through the matching of the conveying mechanism and the forming mechanism, the extruded film can be conveyed to the upper part of the forming mechanism, so that the subsequent forming work is facilitated; by arranging the forming mechanism, the cutting and winding can be carried out after the polyurethane film is formed, and the degree of automation is high.)

1. The utility model provides a medical antibiotic polyurethane film production forming device, includes extrusion mechanism (1), transport mechanism (2), forming mechanism (3), its characterized in that: the extruding mechanism (1), the conveying mechanism (2) and the forming mechanism (3) are sequentially arranged, the conveying mechanism (2) is fixedly arranged on the extruding mechanism (1), and the extruding mechanism (1) and the forming mechanism (3) are arranged on the ground; the extruding mechanism (1) comprises an extruding base (101), an extruding component and a liquid inlet component, wherein the extruding component is arranged on the extruding base (101), and the liquid inlet component is arranged on the extruding base (101); the extrusion assembly comprises an extrusion barrel (103), the extrusion barrel (103) is fixedly mounted on an extrusion base (101), the extrusion barrel (103) is communicated with a discharge hole (104), a heating sheet (125) is arranged inside the extrusion barrel (103), the extrusion barrel (103) and a first rotating shaft (110) are rotatably mounted, the first rotating shaft (110) and a feeding screw (123) are fixedly mounted, a spiral blade is arranged on the feeding screw (123), the first rotating shaft (110) and an output shaft of an extrusion motor (106) are driven by a first synchronous belt (109), the first rotating shaft (110) and a second rotating shaft (112) are driven by a second conveyor belt (111), and the second rotating shaft (112) and a driving bevel gear (113) are fixedly mounted; the liquid inlet assembly comprises an antibacterial agent box (105), the antibacterial agent box (105) is fixedly installed on the extrusion mechanism (1), the antibacterial agent box (105) is communicated with a liquid inlet pipe (120), the liquid inlet pipe (120) is communicated with a one-way valve (119), the one-way valve (119) is communicated with a cavity (118), the cavity (118) is communicated with a one-way valve (121), the structure of the inside of the one-way valve (121) is the same as that of the inside of the one-way valve (119), the one-way valve (121) is communicated with a liquid outlet pipe (122), the liquid outlet pipe (122) is communicated with an annular nozzle (124), the annular nozzle (124) is fixedly installed inside the extrusion cylinder (103), the annular nozzle (124) is of a cavity structure, the inner surface of the annular nozzle (124) is provided with a plurality of round holes, the end part of the piston (117) is provided with a piston plate, the cavity (118) and the piston plate of the piston (117) are installed in a sliding mode, the piston (117) and the connecting rod (116) are rotatably mounted, the connecting rod (116) is rotatably mounted at an eccentric position of the rotating disc (115), the rotating disc (115) and the driven bevel gear (114) are fixedly mounted, and the driven bevel gear (114) and the drive bevel gear (113) are in meshed mounting.

2. The production molding device for the medical antibacterial polyurethane film as claimed in claim 1, wherein: the extrusion assembly further comprises a feeding box (102), the feeding box (102) is communicated with the extrusion cylinder (103), the feeding box (102) is fixedly installed with a fixing rod (107), the fixing rod (107) is fixedly installed with a conical plate (108), the conical plate (108) is conical, and a gap is formed between the conical plate (108) and the feeding box (102).

3. The production molding device for the medical antibacterial polyurethane film as claimed in claim 1, wherein: the inner part of the one-way valve I (119) is provided with a fixing plate (126), the fixing plate (126) and the one-way valve I (119) are fixedly installed, the fixing plate (126) is provided with a plurality of through holes, and the fixing plate (126) is connected with the ball body (128) through a spring (127).

4. The production molding device for the medical antibacterial polyurethane film as claimed in claim 1, wherein: transport mechanism (2) including transport frame (201), transport frame (201) fixed mounting on extruding base (101), transport roller (202) rotate and install on transport frame (201), transport roller (202) are provided with two, one of them transport roller (202) and hold-in range two (205) link to each other, two transport rollers (202) pass through conveyer belt (203) transmission, baffle (204) fixed mounting is in the both sides of transport frame (201), baffle (204) are provided with two.

5. The production molding device for the medical antibacterial polyurethane film as claimed in claim 1, wherein: forming mechanism (3) including forming base (301), hold-in range five (306), forming component, cooling module, cutting component, rolling component, forming component, cooling component, cutting component, rolling component all set up on forming base (301), forming component be provided with a plurality ofly, a plurality of forming component pass through hold-in range five (306) transmission.

6. The production molding device for the medical antibacterial polyurethane film as claimed in claim 5, wherein: the rolling component comprises a forming motor (302), the forming motor (302) is fixedly installed on a forming base (301), an output shaft of the forming motor (302) and a rolling roller (304) are driven through a synchronous belt III (303), the rolling roller (304) is rotatably installed on the forming base (301), and the rolling roller (304) is connected with a synchronous belt IV (305).

7. The production molding device for the medical antibacterial polyurethane film as claimed in claim 6, wherein: the forming assembly comprises a fixed roller (310) and a rotating roller (311), the rotating roller (311) is connected with a synchronous belt four (305), the rotating roller (311) is rotated and installed on a forming base (301), the rotating roller (311) is connected with a synchronous belt two (205), the fixed roller (310) is rotated and installed with a sliding frame (309), the sliding frame (309) is slidably installed on the forming base (301), the sliding frame (309) is fixedly installed with a screw rod (308), the screw rod (308) is installed with a regulating nut (307) through threads, and the regulating nut (307) is rotatably installed on the forming base (301).

8. The production molding device for the medical antibacterial polyurethane film as claimed in claim 5, wherein: the cooling assembly comprises a cooling box (312), the cooling box (312) is fixedly installed on the forming base (301), a first supporting rod (313), a second supporting rod (314) and a third supporting rod (315) are arranged inside the cooling box (312), and the first supporting rod (313) and the third supporting rod (315) are located on the same horizontal plane.

9. The production molding device for the medical antibacterial polyurethane film as claimed in claim 5, wherein: the cutting assembly comprises a supporting frame (316), the supporting frame (316) is fixedly installed on the forming base (301), the supporting frame (316) and a lower plate (317) are fixedly installed, the supporting frame (316) and an upper plate (319) are fixedly installed, two cutters (318) are arranged between the lower plate (317) and the upper plate (319), the number of the cutters (318) is two, and the two cutters (318) are arranged at two ends of the lower plate (317).

Technical Field

The invention relates to the technical field of film production and forming, in particular to a medical antibacterial polyurethane film production and forming device.

Background

Polyurethane is a general name for high molecular polymers containing an imido group (-NH-CO-O) in the molecular chain, and is abbreviated as PU (polyurethane). Usually prepared by reacting a polyisocyanate with a polyol-containing compound or polymer. The polyurethane film used as the packaging material is a thermoplastic polyurethane elastomer. The polyurethane elastomer is a high molecular synthetic material between rubber and plastic, and the main molecular chain is formed by inlaying and combining a flexible chain segment and a rigid chain segment. The structure of the polyurethane elastomer contains a large number of polar groups such as carbamate groups, ester urea groups and the like, the existence of the polar groups and the mutual action of the polar groups endow the polyurethane elastomer with a series of excellent performances, and the polyurethane film is rapidly developed due to the reasons of easy use, diversified functions and the like of film products and has wide and unique application in a plurality of fields. The polyurethane film is mainly prepared by adopting the processes of extrusion, calendering, blow molding and the like, is widely applied to a plurality of fields of medical treatment and health, high-grade textile fabrics, industry and the like, and is popular and favored by users. Chinese patent publication No. CN110815791A discloses a hot press molding apparatus for a thin film, comprising: the feeding structure is provided with a first motor and a rotating shaft, the film is wound on the rotating shaft in a coil shape, the first motor is used for controlling the rotating shaft to rotate, and the rotating shaft rotates to drive the film to advance; the hot-pressing die is arranged on one side of the feeding structure and is provided with an upper pressing plate and a lower pressing plate, the upper pressing plate and the lower pressing plate form a die cavity, and the film passes through the die cavity from the feeding structure to be subjected to hot-pressing forming; the cutting structure is arranged on one side of the hot-pressing die and provided with a cutter, a hot-pressed and molded film penetrates through the cutting structure, and the cutter cuts the film. Although the invention can carry out hot-press molding and cutting on the film, the invention cannot spray the antibacterial agent simultaneously in the extrusion molding process of the film.

Disclosure of Invention

Aiming at the technical problems, the technical scheme adopted by the invention is as follows: a medical antibacterial polyurethane film production forming device comprises an extrusion mechanism, a conveying mechanism and a forming mechanism, wherein the extrusion mechanism, the conveying mechanism and the forming mechanism are sequentially arranged, the conveying mechanism is fixedly arranged on the extrusion mechanism, and the extrusion mechanism and the forming mechanism are both arranged on the ground; the extruding mechanism comprises an extruding base, an extruding component and a liquid inlet component, wherein the extruding component is arranged on the extruding base, and the liquid inlet component is arranged on the extruding base; the extrusion assembly comprises an extrusion barrel, a discharge port, an extrusion motor, a first synchronous belt, a first rotating shaft, a second conveying belt, a second rotating shaft, a driving bevel gear, a feeding screw and a heating plate, wherein the extrusion barrel is fixedly arranged on an extrusion base, the extrusion barrel is communicated with the discharge port, the discharge port is fixedly arranged with the extrusion barrel, the extrusion motor is fixedly arranged on the extrusion base, an output shaft of the extrusion motor and the first rotating shaft are driven by the first synchronous belt, the first rotating shaft is rotatably arranged on the extrusion barrel, the first rotating shaft and the second rotating shaft are driven by the second conveying belt, the second rotating shaft is rotatably arranged on the extrusion base, the second rotating shaft and the driving bevel gear are fixedly arranged, the heating plate is fixedly arranged in the extrusion barrel, the feeding screw is fixedly arranged on the first rotating shaft, and the feeding screw is provided with a helical blade; the liquid inlet component comprises an antibacterial agent box, a driven bevel gear, a rotary disc, a connecting rod, a piston, a cavity, a one-way valve I, a liquid inlet pipe, a one-way valve II, a liquid outlet pipe and an annular spray head, wherein the antibacterial agent box is fixedly arranged on the extrusion mechanism, the driving bevel gear and the driven bevel gear are meshed and arranged, the driven bevel gear is rotatably arranged on the extrusion base, the driven bevel gear and the rotary disc are fixedly arranged, the driven bevel gear and the rotary disc are coaxially arranged, the connecting rod is rotatably arranged at the eccentric position of the rotary disc, the connecting rod and the piston are rotatably arranged, a piston plate is arranged at the end part of the piston, the piston plate of the piston is slidably arranged in the cavity, the cavity is fixedly arranged on the extrusion base, the cavity is communicated with the one-way valve I, the one-way valve I is communicated with the liquid inlet pipe, the liquid inlet pipe is communicated with the antibacterial agent box, the cavity is communicated with the one-way valve II, and the structure in the one-way valve I is the same as that in the one-way valve I, the second check valve is communicated with the liquid outlet pipe, the liquid outlet pipe is communicated with the annular nozzle, the annular nozzle is fixedly installed inside the extrusion cylinder, the annular nozzle is of a cavity structure, and the inner surface of the annular nozzle is provided with a plurality of round holes for spraying antibacterial liquid.

Further, the extrusion assembly further comprises a feeding box, a fixing rod and a conical plate, the feeding box is communicated with the extrusion cylinder, the feeding box is fixedly installed on the extrusion cylinder, the fixing rod is fixedly installed on the feeding box, the conical plate is fixedly installed on the fixing rod, the conical plate is arranged to be conical, and a gap is formed between the conical plate and the feeding box.

Furthermore, a fixing plate, a spring and a ball body are arranged inside the first check valve, the fixing plate and the first check valve are fixedly installed, a plurality of through holes are formed in the fixing plate, the first end of the spring is fixedly installed with the fixing plate, and the second end of the spring is fixedly installed with the ball body.

Further, transport mechanism include conveying frame, transfer roller, conveyer belt, baffle, hold-in range two, conveying frame fixed mounting on extruding the base, the transfer roller is provided with two, two transfer rollers rotate and install on the conveying frame, one of them transfer roller and hold-in range two link to each other, two transfer rollers pass through the conveyer belt transmission, the baffle is provided with two, baffle fixed mounting is in the both sides of conveying frame.

Further, forming mechanism include shaping base, hold-in range five, shaping subassembly, cooling module, cutting component, rolling component all set up on shaping base, shaping subassembly be provided with a plurality ofly, a plurality of shaping subassemblies pass through hold-in range five-drive.

Further, the rolling subassembly include shaping motor, hold-in range three, wind-up roll, hold-in range four, shaping motor fixed mounting on the shaping base, the output shaft and the wind-up roll of shaping motor pass through hold-in range three-drive, the wind-up roll rotates and installs on the shaping base, wind-up roll and hold-in range four link to each other.

Further, the shaping subassembly include adjusting nut, screw rod, carriage, fixed roll, live-rollers and hold-in range four link to each other, adjusting nut rotates and installs on the shaping base, adjusting nut and screw rod thread installation, screw rod and carriage fixed mounting, carriage and fixed roll rotate the installation, carriage slidable mounting is on the shaping base, the live-rollers rotates and installs on the shaping base, live-rollers and hold-in range two link to each other.

Furthermore, the cooling assembly comprises a cooling box, a first supporting rod, a second supporting rod and a third supporting rod, the cooling box is fixedly installed on the forming base, the first supporting rod is fixedly installed in the cooling box, the second supporting rod is fixedly installed in the cooling box, the third supporting rod is fixedly installed in the cooling box, and the first supporting rod and the third supporting rod are located on the same horizontal plane.

Further, the cutting assembly comprises a support frame, a lower plate, cutters and an upper plate, wherein the support frame is fixedly installed on the forming base, the lower plate is fixedly installed on the support frame, the upper plate is fixedly installed on the support frame, the cutters are arranged between the lower plate and the upper plate, the two cutters are arranged at two ends of the lower plate.

Compared with the prior art, the invention has the beneficial effects that: (1) by arranging the extrusion mechanism, the extrusion of the materials and the spraying of the antibacterial agent can be simultaneously driven by one motor, so that the operation is easy and the automation degree is high; (2) by arranging the forming mechanism, the polyurethane film can be extruded and formed for many times, and the forming effect is good; (3) according to the invention, through the matching of the conveying mechanism and the forming mechanism, the extruded film can be conveyed to the upper part of the forming mechanism, so that the subsequent forming work is facilitated; (4) by arranging the forming mechanism, the cutting and winding can be carried out after the polyurethane film is formed, and the degree of automation is high.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural diagram of an extrusion mechanism according to the present invention.

FIG. 3 is a schematic view of the internal structure of the feed box of the present invention.

Fig. 4 is a partially enlarged view of a portion a in fig. 2.

Fig. 5 is a partial structural view of the extrusion mechanism of the present invention.

Fig. 6 is a schematic view of the internal structure of the check valve i of the present invention.

FIG. 7 is a schematic structural diagram of a transfer mechanism according to the present invention.

FIG. 8 is a schematic structural view of the forming mechanism of the present invention.

FIG. 9 is a schematic view of the construction of the molding assembly of the present invention.

Fig. 10 is a schematic view of the structure of the cooling module of the present invention.

FIG. 11 is a schematic view of a cutting assembly according to the present invention.

Fig. 12 is a partially enlarged view of a portion B in fig. 11.

Reference numerals: 1-an extrusion mechanism; 2-a transfer mechanism; 3-a forming mechanism; 101-extruding a base; 102-a feed box; 103-an extrusion cylinder; 104-discharge hole; 105-an antimicrobial tank; 106-extrusion motor; 107-fixing rods; 108-a tapered plate; 109-synchronous belt I; 110-rotating shaft one; 111-conveyor two; 112-rotating shaft two; 113-drive bevel gear; 114-driven bevel gear; 115-a turntable; 116-a connecting rod; 117-a piston; 118-a cavity; 119-a one-way valve I; 120-liquid inlet pipe; 121-one-way valve II; 122-a liquid outlet pipe; 123-a feeding screw rod; 124-ring-shaped spray head; 125-heating plate; 126-a fixing plate; 127-a spring; 128-sphere; 201-a transport rack; 202-a transfer roller; 203-a conveyor belt; 204-a baffle; 205-synchronous belt two; 301-forming a base; 302-a forming motor; 303-synchronous belt III; 304-a wind-up roll; 305-synchronous belt four; 306-synchronous belt five; 307-adjusting nut; 308-a screw; 309-sliding rack; 310-a fixed roller; 311-rotating rollers; 312-a cooling tank; 313-a first support bar; 314-a second support bar; 315-third support bar; 316-a support frame; 317-a lower plate; 318-a cutter; 319-upper plate.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Example (b): as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11, and fig. 12, the device for producing and molding a medical antibacterial polyurethane film comprises an extruding mechanism 1, a conveying mechanism 2, and a molding mechanism 3, wherein the extruding mechanism 1, the conveying mechanism 2, and the molding mechanism 3 are sequentially arranged, the conveying mechanism 2 is fixedly installed on the extruding mechanism 1, and the extruding mechanism 1 and the molding mechanism 3 are both arranged on the ground.

The extruding mechanism 1 comprises a feeding box 102, an extruding cylinder 103, a extruding base 101, an extruding cylinder 103, a discharging port 104, an extruding cylinder 103, an antibacterial agent box 105, an extruding motor 106, a fixing rod 107, a conical plate 108, a gap is formed between the conical plate 108 and the feeding box 102, the extruding motor 106 is fixedly arranged on the extruding mechanism 1, the extruding motor 106 is fixedly arranged on the extruding base 101, the fixing rod 107 is fixedly arranged on the feeding box 102, the conical plate 108 is fixedly arranged on the fixing rod 107, the conical plate 108 is conical, a gap is formed between the conical plate 108 and the feeding box 102, an output shaft of the extruding motor 106 and a rotating shaft 110 are transmitted through a synchronous belt 109, the rotating shaft 110 is rotatably arranged on the extruding cylinder 103, the rotating shaft 110 and a rotating shaft two 112 are transmitted through a conveying belt 111, the rotating shaft two 112 is rotatably arranged on the extruding base 101, and the rotating shaft two 112 and a driving bevel gear 113 are fixedly arranged, the driving bevel gear 113 and the driven bevel gear 114 are meshed and mounted, the driven bevel gear 114 is rotatably mounted on the extrusion base 101, the driven bevel gear 114 and the rotary table 115 are fixedly mounted, the driven bevel gear 114 and the rotary table 115 are coaxially arranged, the connecting rod 116 is rotatably mounted at an eccentric position of the rotary table 115, the connecting rod 116 and the piston 117 are rotatably mounted, a piston plate is arranged at the end of the piston 117, the piston plate of the piston 117 is slidably mounted in the cavity 118, the cavity 118 is fixedly mounted on the extrusion base 101, the cavity 118 is communicated with the first check valve 119, the first check valve 119 is communicated with the liquid inlet pipe 120, the liquid inlet pipe 120 is communicated with the antibacterial agent box 105, the cavity 118 is communicated with the second check valve 121, the second check valve 121 is communicated with the liquid outlet pipe 122, the liquid outlet pipe 122 is communicated with the annular nozzle 124, the annular nozzle 124 is fixedly mounted in the extrusion barrel 103, the annular nozzle 124 is arranged in a cavity structure, and a plurality of round holes are formed in the inner surface of the annular nozzle 124, the heating device is used for spraying antibacterial liquid, the heating plate 125 is fixedly installed inside the extrusion cylinder 103, the feeding screw 123 is fixedly installed on the first rotating shaft 110, the feeding screw 123 is provided with a helical blade and used for conveying materials, the fixing plate 126, the spring 127 and the ball 128 are arranged inside the first check valve 119, the fixing plate 126 and the first check valve 119 are fixedly installed, the fixing plate 126 is provided with a plurality of through holes, the first end of the spring 127 is fixedly installed with the fixing plate 126, the second end of the spring 127 is fixedly installed with the ball 128, and the first check valve 119 and the second check valve 121 are identical in structure.

Conveying mechanism 2, conveying frame 201 fixed mounting are on extruding base 101, and transfer roller 202 is provided with two, and two transfer rollers 202 rotate and install on conveying frame 201, and one of them transfer roller 202 links to each other with two 205 synchronous belts, and two transfer rollers 202 pass through the transmission of conveyer belt 203, and baffle 204 is provided with two, and baffle 204 fixed mounting is in the both sides of conveying frame 201.

The forming mechanism 3 is characterized in that a forming motor 302 is fixedly arranged on a forming base 301, an output shaft of the forming motor 302 and a winding roller 304 are driven by a synchronous belt III 303, the winding roller 304 is rotatably arranged on the forming base 301, three adjusting nuts 307, screw rods 308, a sliding frame 309, a fixed roller 310 and rotating rollers 311 are arranged, the winding roller 304 and a first rotating roller 311 are driven by a synchronous belt IV 305, the adjusting nuts 307 are rotatably arranged on the forming base 301, the adjusting nuts 307 and the screw rods 308 are in threaded arrangement, the screw rods 308 and the sliding frame 309 are fixedly arranged, the sliding frame 309 and the fixed roller 310 are rotatably arranged, the sliding frame 309 is slidably arranged on the forming base 301, the rotating rollers 311 are rotatably arranged on the forming base 301, the first rotating roller 311 and a second rotating roller 311 are driven by a synchronous belt V306, and the second rotating roller 311 and a third rotating roller 311 are driven by a synchronous belt V306, the third rotating roller 311 is connected with the second synchronous belt 205, the cooling box 312 is fixedly installed on the forming base 301, the first supporting rod 313 is fixedly installed inside the cooling box 312, the second supporting rod 314 is fixedly installed inside the cooling box 312, the third supporting rod 315 is fixedly installed inside the cooling box 312, the first supporting rod 313 and the third supporting rod 315 are located on the same horizontal plane, the second supporting rod 314 is arranged on one side close to the bottom surface of the cooling box 312, the first supporting rod 313 and the third supporting rod 315 are arranged on one side close to the top surface of the cooling box 312, the supporting frame 316 is fixedly installed on the forming base 301, the lower plate 317 is fixedly installed on the supporting frame 316, the upper plate 319 is fixedly installed on the supporting frame 316, the cutters 318 are arranged between the lower plate 317 and the upper plate 319, the cutters 318 are provided with two cutters 318, and the two cutters 318 are arranged at two ends of the lower plate 317.

The working principle of the invention is as follows: firstly, pouring a semi-finished product polyurethane granular material into a feeding box 102, enabling the polyurethane granular material to slide into an extrusion cylinder 103 along the inclined surface of a conical plate 108 so as to prevent accumulation of the semi-finished product granular material, then starting an extrusion motor 106, driving a rotating shaft I110 to rotate by an output shaft of the extrusion motor 106 through a synchronous belt I109, and enabling a feeding screw 123 fixedly arranged on the rotating shaft I110 to rotate so as to enable the polyurethane granular material to move towards a discharge hole 104; meanwhile, the first rotating shaft 110 drives the second rotating shaft 112 to synchronously rotate through the second conveyor belt 111, the driving bevel gear 113 fixedly mounted on the second rotating shaft 112 also synchronously rotates, the driving bevel gear 113 drives the driven bevel gear 114 to rotate, the turntable 115 fixedly mounted on the driven bevel gear 114 also synchronously rotates, the turntable 115 drives the piston plate at the end part of the piston 117 to reciprocate in the cavity 118 through the connecting rod 116, when the piston plate at the end part of the piston 117 moves in the direction away from the second check valve 121, the pressure in the cavity 118 is reduced, the ball 128 in the second check valve 121 is clamped at one end of the second check valve 121, the position of the ball 128 is kept unchanged, the second check valve 121 is in a closed state, the ball 128 in the first check valve 119 compresses the spring 127, and the first check valve 119 is in an open state, so that the antibacterial agent in the antibacterial agent tank 105 is sucked into the cavity 118 through the liquid inlet pipe 120; when the piston plate at the end of the piston 117 moves towards the direction close to the second check valve 121, the pressure inside the cavity 118 is increased, the ball 128 in the first check valve 119 is clamped at one end of the first check valve 119, the position of the ball 128 is kept unchanged, the first check valve 119 is in a closed state, the ball 128 in the second check valve 121 compresses the spring 127, the second check valve 121 is in an open state, the antibacterial agent in the cavity 118 is pushed into the annular spray head 124 through the liquid outlet pipe 122 and is sprayed on the polyurethane particles through the circular holes in the annular spray head 124, and then the mixture is heated to a molten state through the heating sheet 125; with the rotation of the feeding screw 123, the mixture is fed into the discharge port 104, and sheets with a certain thickness are continuously extruded from the discharge port 104 and fall on the conveyor belt 203.

Start forming motor 302, forming motor 302 drives wind-up roll 304 through three 303 of hold-in range and rotates, wind-up roll 304 drives first live-rollers 311 through hold-in range four 305 and rotates, first live-rollers 311 drives second live-rollers 311 through hold-in range five 306 and rotates, second live-rollers 311 drives third live-rollers 311 through hold-in range five 306 and rotates, third live-rollers 311 drives transfer roller 202 through hold-in range two 205 and rotates, transfer roller 202 drives the motion of conveyer belt 203, transport the polyurethane sheet body to the top of third live-rollers 311 and fixed roll 310.

The adjusting nut 307 is rotated, the adjusting nut 307 drives the screw rod 308 to move, the screw rod 308 drives the sliding frame 309 to slide on the forming base 301, namely, the distance between the fixed roller 310 and the rotating roller 311 can be adjusted, and the distances between the three rotating rollers 311 and the fixed roller 310 are sequentially reduced from top to bottom, namely, the polyurethane sheet can be gradually thinned; starting a forming motor 302, driving a winding roller 304 to rotate by the forming motor 302 through a third synchronous belt 303, driving a first rotating roller 311 to rotate by the winding roller 304 through a fourth synchronous belt 305, driving a second rotating roller 311 to rotate by the first rotating roller 311 through a fifth synchronous belt 306, and driving a third rotating roller 311 to rotate by the second rotating roller 311 through the fifth synchronous belt 306, so that the polyurethane sheet can be gradually thinned; the end parts of the polyurethane sheet body penetrate through the lower sides of the first support rod 313, the second support rod 314 and the third support rod 315, the film is cooled and molded in the cooling box 312, then the film penetrates between the lower plate 317 and the upper plate 319, the width of the plastic film is cut through the cutter 318, and finally the plastic film is wound on the winding roller 304, and the winding roller 304 rotates, so that the film can be wound.

The present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make various modifications without creative efforts from the above-described conception and fall within the scope of the present invention.