Polyurethane film and processing technology thereof

Abstract

The invention relates to the field of polyurethane film processing, in particular to a polyurethane film and a processing technology thereof. The polyurethane film and the processing technology thereof have the beneficial effects that when the polyurethane film is produced and processed, the edges of the two sides of the extruded polyurethane film can be conveniently cut, so that the edges of the polyurethane film are neater, and the product attractiveness of the polyurethane film is improved. According to the technical scheme, the polyurethane film processing device comprises a supporting frame and a butt joint barrel fixedly connected to the top of the supporting frame, the bottom of the butt joint barrel is fixedly communicated with a plurality of circulation pipes, a right-angle frame is fixedly connected to the middle of the supporting frame, an extrusion frame is rotationally connected to the right-angle frame, and the extrusion frame is fixedly connected to the bottom of the butt joint barrel. And the upper side of the extrusion frame is fixed and communicated with the bottoms of the circulating pipes, a pressing plate slides into an opening in the left side of the extrusion frame, and a forming frame is fixedly connected to the right side of the middle of the supporting frame.

Description

Technical Field

[0001] The invention relates to the field of polyurethane film processing, and more specifically to a polyurethane film and a processing technology thereof. Background Art

[0002] Polyurethane film is widely used in packaging, medical, textile, electronics and other fields due to its excellent mechanical properties, flexibility and chemical resistance. In the production process of polyurethane film, the extrusion molding process is usually adopted, that is, the molten polyurethane material is extruded into a film through an extruder, and then the final product is formed through cooling, stretching and other processes. However, in the actual production process, the edges of the extruded polyurethane film on both sides often have irregularities, burrs or uneven thickness, which seriously affects the appearance quality and performance of the film;

[0003] By optimizing the cutting steps, not only can the neatness and aesthetics of the film edge be improved, but also material waste can be reduced and production efficiency can be improved, thereby meeting the higher requirements for the quality of polyurethane film products in high-end application fields. Therefore, this application is proposed to solve the above-mentioned technical problems. Summary of the invention

[0004] The purpose of the present invention is to provide a polyurethane film and a processing technology thereof, which has the beneficial effect that, when producing and processing the polyurethane film, it is convenient to cut the edges of the polyurethane film formed by extrusion, so that the edges of the polyurethane film are more neat, thereby improving the product aesthetics of the polyurethane film.

[0005] The objective of the present invention is achieved through the following technical scheme: A polyurethane film processing device comprises a support frame and a docking barrel fixedly connected to the top of the support frame, the bottom of the docking barrel is fixed and connected with a plurality of flow tubes, the middle of the support frame is fixedly connected with a right-angle frame, an extrusion frame is rotatably connected to the right-angle frame, the upper side of the extrusion frame is fixed and connected with the bottom of the plurality of flow tubes, a pressing plate is slid into the left opening of the extrusion frame, a molding frame is fixedly connected to the right side of the middle of the support frame, the bottom left and right sides of the molding frame are respectively rotatably connected with a rotating rod, the middle of each rotating rod is fixedly connected with an extrusion roller, and a cutting device is respectively provided on the front and rear sides of the molding frame.

[0006] The left side of the pressing plate is fixedly connected to the movable end of the hydraulic cylinder, the fixed end of the hydraulic cylinder is fixedly connected to the left side of the extrusion frame, the left bottom of the extrusion frame is rotatably connected to the movable end of the electric push rod I, and the fixed end of the electric push rod I is rotatably connected to the left side of the middle part of the support frame.

[0007] The rear side of each rotating rod is fixedly connected with a gear, and the two gears are meshed for transmission.

[0008] The cutting device includes two lateral frames arranged in mirror image, the two lateral frames are respectively slidably connected to the left and right sides of the forming frame, the adjacent side of each lateral frame is rotatably connected to a short rod, the middle of each short rod is respectively fixedly connected to a cutting disk, the bottom of each two lateral frames is respectively fixedly connected to the two movable ends of the two-way push rod, and the fixed ends of the two two-way push rods are respectively fixedly connected to the front and rear sides of the forming frame.

[0009] A long hole is respectively arranged at the front and rear sides of the bottom of the forming frame, and a material receiving frame is respectively arranged in each of the long holes.

[0010] The process of processing polyurethane film by using the above-mentioned polyurethane film processing device comprises the following steps:

[0011] S1: transferring the hot melted polyurethane particles to a polyurethane film processing device;

[0012] S2: The hot melt polyurethane particles are continuously circulated and collected through the polyurethane film processing device, and the hot melt polyurethane particles are extruded into a continuous sheet through the polyurethane film processing device;

[0013] S3: pressing the continuously extruded sheet raw material into a film shape for a second time through a polyurethane film processing device;

[0014] S4: neatly cutting the edges of both sides of the secondary extruded polyurethane film, and winding and collecting the cut polyurethane film through a polyurethane film processing device.

[0015] The polyurethane film is processed by the above process, and the raw materials of the polyurethane film include polyurethane prepolymer, ethylene glycol, nano calcium carbonate, phosphite antioxidant and benzophenone ultraviolet absorber. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0017] Figure 1 It is a partial structural schematic diagram of the support frame of the present invention;

[0018] Figure 2 It is a partial structural schematic diagram of the docking barrel of the present invention;

[0019] Figure 3 It is a schematic diagram of the top view of the extrusion frame of the present invention;

[0020] Figure 4 1 is a bottom view structural schematic diagram of the extrusion frame of the present invention;

[0021] Figure 5 It is a partial structural schematic diagram of the rotating rod of the present invention;

[0022] Figure 6 It is a partial structural schematic diagram of the cutting disc of the present invention;

[0023] Figure 7 It is a partial structural schematic diagram of the material receiving frame of the present invention;

[0024] Figure 8 It is a partial structural schematic diagram of the sliding seat of the present invention;

[0025] Fig. 9 and Fig.10 All of them are schematic diagrams of the overall structure of the present invention.

[0026] In the figure: support frame 101; docking barrel 102; circulation pipe 103; right-angle frame 104; forming frame 105; slow-flow roller 106; winding roller 107; limit plate 108; extrusion frame 201; pressing plate 202; hydraulic cylinder 203; electric push rod I 204; rotating rod 301; extrusion roller 302; gear 303; lateral frame 401; short rod 402; cutting disc 403; two-way push rod 404; material receiving frame 501; sliding seat 601; auxiliary roller 602; electric push rod II 603. DETAILED DESCRIPTION

[0027] A polyurethane film processing device comprises a support frame 101 and a docking barrel 102 fixedly connected to the top of the support frame 101, a plurality of flow tubes 103 are fixedly connected to the bottom of the docking barrel 102 and are connected thereto, a right-angle frame 104 is fixedly connected to the middle of the support frame 101, an extrusion frame 201 is rotatably connected to the right-angle frame 104, the upper side of the extrusion frame 201 is fixedly connected to and connected to the bottoms of the plurality of flow tubes 103, a pressing plate 202 is slid into the left opening of the extrusion frame 201, a molding frame 105 is fixedly connected to the right side of the middle of the support frame 101, a rotating rod 301 is rotatably connected to the left and right sides of the bottom of the molding frame 105, an extrusion roller 302 is fixedly connected to the middle of each rotating rod 301, and a cutting device is provided at the front and rear sides of the molding frame 105, respectively.

[0028] This part is based on Figure 1-5The working process expressed in 9 and 10 is: when producing and processing polyurethane film, in order to facilitate the cutting of the edges of the polyurethane film formed by extrusion, so that the edges of the polyurethane film are more neat and the product aesthetics of the polyurethane film is improved, when in use, the hot-melt polyurethane particles are connected to the upper opening of the docking barrel 102 and flow into the docking barrel 102, and then the staff applies pressure to make the raw materials flow downward in the docking barrel 102, thereby forming a continuous flow trend, and the hot-melt polyurethane particles are diverted through the docking barrel 102. The hot-melt polyurethane particles are hereinafter referred to as raw materials, and flow into each circulation tube 103 respectively. Each circulation tube 103 is a rubber hose, and then flows into the extrusion frame 201 through the circulation tube 103, and then the pressing plate 202 is directed toward the extrusion frame 201 moves inside, so that the raw material in the extrusion frame 201 is squeezed by the pressing plate 202, so that the raw material is extruded in a continuous sheet through the long strip opening at the bottom of the extrusion frame 201, and flows into the molding frame 105. After the raw material in a continuous sheet flows into the molding frame 105, the continuous sheet of raw material passes between two squeezing rollers 302, and the rotation directions of the two rotating rods 301 are both toward the direction of the raw material, so that the raw material is extruded into a film, and the polyurethane film flows into the molding frame 105, and then the cutting device located at the front and rear sides of the molding frame 105 extends into the molding frame 105 to cut the two sides of the circulating polyurethane film neatly, so that the edge of the polyurethane film is more neat, thereby improving the product aesthetics of the polyurethane film.

[0029] The left side of the pressing plate 202 is fixedly connected to the movable end of the hydraulic cylinder 203, the fixed end of the hydraulic cylinder 203 is fixedly connected to the left side of the extrusion frame 201, the left bottom of the extrusion frame 201 is rotatably connected to the movable end of the electric push rod Ⅰ204, and the fixed end of the electric push rod Ⅰ204 is rotatably connected to the left side of the middle part of the support frame 101.

[0030] This part is based on Figure 1-5The working process expressed in 9 and 10 is: when the pressing plate 202 extrude the raw material in the extrusion frame 201 and it flows out in a continuous sheet from the long strip opening at the bottom of the extrusion frame 201, the hydraulic cylinder 203 is driven to make the pressing plate 202 at the movable end of the hydraulic cylinder 203 move toward the inside of the extrusion frame 201, so as to extrude the raw material inside the extrusion frame 201, and to facilitate the adjustment of the inclination angle of the extrusion frame 201, so as to control the bottom opening of the extrusion frame 201 to be aligned between the two extrusion rollers 302 on the forming frame 105, when in use, the electric push rod I 204 is driven so that the extrusion frame 201 at the movable end of the electric push rod I 204 can be rotated and adjusted according to the right-angle frame 104, so as to control the bottom opening of the extrusion frame 201 to be aligned between the two extrusion rollers 302 on the forming frame 105, thereby improving the structural stability of the overall device.

[0031] A gear 303 is fixedly connected to the rear side of each rotating rod 301 , and the two gears 303 are meshed and transmitted.

[0032] This part is based on Figure 1-5 The working process expressed in 9 and 10 is: in order to allow the extrusion rollers 302 on the two rotating rods 301 to rotate towards each other, an output shaft of a first motor is fixedly connected to the rear of the rotating rod 301 on the left side through a coupling, and the first motor is fixedly connected to the forming frame 105 by bolts. The first motor is driven to rotate the rotating rod 301 on the left side, thereby rotating the gear 303 on the rotating rod 301 on the left side, thereby rotating the other gear 303 meshing with it and rotating synchronously, so that the rotating rod 301 on the right side rotates towards the rotating rod 301 on the left side, so that the raw material entering between the two extrusion rollers 302 is extruded and formed into a polyurethane film.

[0033] The cutting device includes two lateral frames 401 arranged in a mirror image, and the two lateral frames 401 are respectively slidably connected to the left and right sides of the forming frame 105, and the adjacent side of each lateral frame 401 is rotatably connected to a short rod 402, and the middle part of each short rod 402 is respectively fixedly connected to a cutting disk 403, and the bottom of each two lateral frames 401 is respectively fixedly connected to the two movable ends of the two-way push rod 404, and the fixed ends of the two two-way push rods 404 are respectively fixedly connected to the front and rear sides of the forming frame 105.

[0034] This part is based on Figure 1-6The working process expressed in 9 and 10 is: when the polyurethane film flowing out of the molding frame 105 is in a circulation state, the edges on both sides can be cut, so as not to affect the molding work and cut the edges at the same time. When in use, the two-way push rods 404 on both sides are driven so that the lateral frames 401 located on the movable ends on both sides drive the cutting disks 403 on the short rods 402 to extend into the molding frame 105 along the four corners of the molding frame 105, so that when the two cutting disks 403 on the same side are close to each other, the edges on both sides of the polyurethane film are cut off, and following the circulation of the polyurethane film, the cut cutting disks 403 are rotated by relying on the short rods 402, so that the cutting disks 403 rotate synchronously while cutting the edges on both sides of the polyurethane film, so that the molded polyurethane film is more neat, and the overall beauty of the polyurethane film is improved, so as not to affect the molding work and cut the edges at the same time.

[0035] The bottom of the molding frame 105 is provided with a long hole at both the front and rear sides, and each long hole is provided with a material receiving frame 501.

[0036] This part is based on Figure 1-7 The working process expressed in 9 and 10 is: after the edge of the polyurethane film is cut off by the cutting disks 403 on both sides, in order to facilitate the collection of the cut residue, when in use, the two receiving frames 501 are extended into the interior of the molding frame 105 along the long holes on both sides of the bottom of the molding frame 105, and close to the two side edges of the circulating polyurethane film. After the cutting disk 403 cuts off the edge, the cut residue falls and is collected in the receiving frames 501 on both sides, which is helpful for the staff to recycle and improve the working environment of the overall device.

[0037] A slow-flow roller 106 is rotatably connected to the lower side of the forming frame 105 .

[0038] A winding roller 107 is provided at the bottom of the forming frame 105 .

[0039] This part is based on Figure 1-7 The working process expressed in 9 and 10 is: when the polyurethane film circulates after cutting, it is buffered and changed in flow direction by the bottom of the slow-flow roller 106 with the assistance of the staff, and then wound onto the winding roller 107. A second motor is fixedly installed on the rear side of the winding roller 107 through a coupling. The second motor is fixedly installed on the bottom of the support frame 101 through bolts, and the second motor is driven to rotate the winding roller 107, so that the polyurethane film is wound by the winding roller 107. The winding roller 107 is detachably rotatably connected to the bottom of the support frame 101. After a certain amount of polyurethane film is wound at the bottom of the winding roller 107, the winding roller 107 can be removed to obtain the wound finished material.

[0040] The left side of the bottom of the support frame 101 is fixedly connected to a limiting plate 108, and a sliding seat 601 is slidably connected to the limiting plate 108. The right side of the sliding seat 601 is rotatably connected to an auxiliary roller 602. The left side of the sliding seat 601 is fixedly connected to the movable end of an electric push rod II 603, and the fixed end of the electric push rod II 603 is fixedly connected to the limiting plate 108.

[0041] This part is based on Figure 1-10 The working process expressed therein is: in order to facilitate the secondary extrusion of the polyurethane film passing through the slow-flow roller 106 according to the needs of the staff to make the polyurethane film further thinner, when in use, the electric push rod Ⅱ603 is driven to make the sliding seat 601 located on the movable end of the electric push rod Ⅱ603 move toward the slow-flow roller 106, so that the auxiliary roller 602 is close to the slow-flow roller 106, and the polyurethane film that is attached to the slow-flow roller 106 is pressed, and the polyurethane film is pressed twice to make the polyurethane film further thinner, which is suitable for different production needs of the staff, has a simple structure, and is convenient and quick to use.

[0042] The process of processing polyurethane film by using the above-mentioned polyurethane film processing device comprises the following steps:

[0043] S1: transferring the hot melted polyurethane particles to a polyurethane film processing device;

[0044] S2: The hot melt polyurethane particles are continuously circulated and collected through the polyurethane film processing device, and the hot melt polyurethane particles are extruded into a continuous sheet through the polyurethane film processing device;

[0045] S3: pressing the continuously extruded sheet raw material into a film shape for a second time through a polyurethane film processing device;

[0046] S4: neatly cutting the edges of both sides of the secondary extruded polyurethane film, and winding and collecting the cut polyurethane film through a polyurethane film processing device.

[0047] The polyurethane film is processed by the above process, and the raw materials of the polyurethane film include polyurethane prepolymer, ethylene glycol, nano calcium carbonate, phosphite antioxidant and benzophenone ultraviolet absorber.

Claims

1. A polyurethane film processing device, comprising a support frame (101) and a docking barrel (102) fixedly connected to the top of the support frame (101), wherein a plurality of flow pipes (103) are fixedly connected to the bottom of the docking barrel (102), and characterized in that: A right-angle frame (104) is fixedly connected to the middle of the support frame (101), and an extrusion frame (201) is rotatably connected to the right-angle frame (104). The upper side of the extrusion frame (201) is fixed to and communicated with the bottoms of the plurality of flow tubes (103). A pressing plate (202) slides into the left opening of the extrusion frame (201). A molding frame (105) is fixedly connected to the right side of the middle of the support frame (101). The bottom left and right sides of the molding frame (105) are rotatably connected to a rotating rod (301), and the middle of each rotating rod (301) is fixedly connected to an extrusion roller (302). A cutting device is provided on the front and rear sides of the molding frame (105).

2. A polyurethane film processing device according to claim 1, characterized in that: The left side of the pressing plate (202) is fixedly connected to the movable end of a hydraulic cylinder (203), the fixed end of the hydraulic cylinder (203) is fixedly connected to the left side of the extrusion frame (201), the left bottom of the extrusion frame (201) is rotatably connected to the movable end of an electric push rod I (204), and the fixed end of the electric push rod I (204) is rotatably connected to the left side of the middle part of the support frame (101).

3. A polyurethane film processing device according to claim 1, characterized in that: A gear (303) is fixedly connected to the rear side of each rotating rod (301), and the two gears (303) are meshed and transmitted.

4. A polyurethane film processing device according to claim 1, characterized in that: The cutting device comprises two lateral frames (401) arranged in mirror image, the two lateral frames (401) are respectively slidably connected to the left and right sides of the forming frame (105), the adjacent side of each lateral frame (401) is rotatably connected to a short rod (402), the middle of each short rod (402) is respectively fixedly connected to a cutting disc (403), the bottom of each two lateral frames (401) is respectively fixedly connected to the two movable ends of a bidirectional push rod (404), and the fixed ends of the two bidirectional push rods (404) are respectively fixedly connected to the front and rear sides of the forming frame (105).

5. A polyurethane film processing device according to claim 4, characterized in that: The bottom of the molding frame (105) is provided with a long hole on both the front and rear sides, and each long hole is provided with a material receiving frame (501).

6. A polyurethane film processing device according to claim 5, characterized in that: A slow-flow roller (106) is rotatably connected to the lower side of the forming frame (105).

7. A polyurethane film processing device according to claim 6, characterized in that: A winding roller (107) is provided at the bottom of the forming frame (105).

8. The polyurethane film processing device according to claim 4, characterized in that: The left side of the bottom of the support frame (101) is fixedly connected to a limiting plate (108), the limiting plate (108) is slidably connected to a sliding seat (601), the right side of the sliding seat (601) is rotatably connected to an auxiliary roller (602), the left side of the sliding seat (601) is fixedly connected to the movable end of an electric push rod II (603), and the fixed end of the electric push rod II (603) is fixedly connected to the limiting plate (108).

9. A process for processing a polyurethane film according to a polyurethane film processing device according to any one of claims 1 to 8, characterized in that: The process includes the following steps, S1: transferring the hot melted polyurethane particles to a polyurethane film processing device; S2: The hot melt polyurethane particles are continuously circulated and collected through the polyurethane film processing device, and the hot melt polyurethane particles are extruded into a continuous sheet through the polyurethane film processing device; S3: pressing the continuously extruded sheet raw material into a film shape for a second time through a polyurethane film processing device; S4: neatly cutting the edges of both sides of the secondary extruded polyurethane film, and winding and collecting the cut polyurethane film through a polyurethane film processing device.

10. The polyurethane film processed by the process of claim 9, characterized in that: The raw materials of the polyurethane film include polyurethane prepolymer, ethylene glycol, nano calcium carbonate, phosphite antioxidant and benzophenone ultraviolet absorber.

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