Extrusion forming mechanism of double screw extruder for polymer waterproofing membrane

Abstract

The application provides an extrusion forming mechanism of a double-screw extruder for a polymer waterproof roll material, which comprises a device main body, a support column leg is installed on the lower surface of the device main body, and an electric wire is installed on the rear surface of the device main body. The extrusion forming mechanism of the double-screw extruder for the polymer waterproof roll material can mix the polymer material through the stirring rod, so that the mixed polymer material can be conveyed into the double-screw extrusion device, the polymer material can be conveyed through the double-screw extrusion device under the action of the transmission rod, the baffle can seal the extrusion groove under the action of the telescopic rod, then the bracket is acted on under the action of the electric telescopic rod, so that the support plate can be acted on, and then the support plate can be extruded in the sealed condition, so that the polymer material can be normally extruded, and the polymer material can be extruded and formed through the extrusion pipe.

Description

Technical Field

[0001] This invention relates to the field of extrusion molding technology, and specifically discloses an extrusion molding mechanism for a twin-screw extruder of a polymer waterproof membrane. Background Technology

[0002] Synthetic polymer waterproof membranes are rollable sheet waterproof materials made from synthetic rubber, synthetic resin, or blends of the two as base materials, with the addition of appropriate chemical additives and fillers, and processed using rubber or plastic processing techniques such as mixing, extrusion, or calendering. During the manufacturing of polymer waterproof membranes, the polymer materials need to be stirred and mixed, and then extruded and flattened using a twin-screw extruder. However, this process makes it inconvenient to fully extrude the internal polymer materials during use, easily leaving some polymer material inside, which is inconvenient. Therefore, we propose an extrusion molding mechanism for polymer waterproof membranes using a twin-screw extruder. Summary of the Invention

[0003] In view of the above-mentioned defects or deficiencies in the prior art, this application aims to provide an extrusion molding mechanism for a twin-screw extruder of polymer waterproof membrane, including a device body, a support column leg installed on the lower surface of the device body, an electrical wire installed on the rear surface of the device body, a feed hopper installed on the upper surface of the device body, and a transmission box installed on one side of the feed hopper.

[0004] Preferably, a support frame is installed on one side surface of the main body of the device, a coil rod is installed on the inner surface of the support frame, and a slot is formed on the surface of the coil rod.

[0005] Preferably, a stirring rod is installed inside the feed hopper, a transmission rod is installed below the stirring rod, and a twin-screw extruder is installed on one side surface of the transmission rod.

[0006] Preferably, an extrusion groove is installed on one side of the twin-screw extruder, a baffle is installed on one side surface of the extrusion groove, and a telescopic rod is installed on the upper surface of the baffle.

[0007] Preferably, a support plate is installed on the upper surface of the extrusion groove, and an electric telescopic rod is installed on the inner side of the support plate.

[0008] Preferably, a bracket is installed on the surface of the electric telescopic rod, and a feeding pipe is installed on one side of the extrusion groove and an extrusion pipe is installed on the other side.

[0009] Preferably, the extrusion molding method of the twin-screw extruder includes the following steps:

[0010] Step 1: Put granular or powdered EVA resin and linear low-density polyethylene resin into a mixer and mix for 10-30 minutes. Then feed the material into a screw extruder, heat it until plasticized, and extrude it into a calender.

[0011] Step 2, First Calendering: Place the non-woven fabrics printed with different patterns and colors into the calendering machine and place them on the surface of the above materials. After calendering, the materials and the non-woven fabrics printed with patterns are bonded together and pressed into a 1mm thick sheet. Then, the edges are cut and the sheet is rolled into a roll.

[0012] Step 3: Mix 65 parts of granular or powdered transparent EVA resin and 35 parts of linear low-density polyethylene resin without adding any dye in a mixer. The mixture is then fed into a screw extruder, heated to plasticize, and extruded into a calender.

[0013] Step 4, Second Calendering: At this time, put the rolls from the first calendering into the calendering machine together, with the non-woven fabric on the outer surface of both rolls, and calender them. Then, trim the edges and roll them up to form the bucket rolls with various patterns or designs as required.

[0014] Preferably, the thickness of the calendered sheet is 1.8-2.2 mm.

[0015] Preferably, in step three, the mixture is stirred for 10-20 minutes using a mixer.

[0016] Beneficial effects:

[0017] 1. The extrusion molding mechanism of the twin-screw extruder for this polymer waterproof membrane, through the setting of a stirring rod, can mix the polymer material, thereby enabling the mixed polymer material to be transported into the twin-screw extruder. Under the action of the transmission rod, the polymer material is transported through the twin-screw extruder. Through the setting of a baffle, under the action of the telescopic rod, the baffle seals the extrusion groove. Then, under the action of the electric telescopic rod, the support is activated, thereby activating the support plate, which in turn causes the support plate to be squeezed inward under sealed conditions, thus enabling the polymer material to be extruded normally. Through the setting of an extrusion tube, the polymer material can be extruded and molded.

[0018] 2. The extrusion molding mechanism of the twin-screw extruder for the polymer waterproof membrane, through the main body of the device, can manufacture the waterproof membrane from the polymer material. The support legs can support the main body of the device, the feed hopper can add the polymer material into the main body of the device, the transmission structure inside the transmission box can drive the main body of the device, and the set winding rod can clamp the formed waterproof membrane onto the surface of the winding rod under the action of the slot, and then can be rolled into a roll under the action of the winding rod. Attached Figure Description

[0019] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic cross-sectional view of the overall structure of the present invention;

[0022] Figure 3 This is an enlarged cross-sectional view of part of the structure of the present invention.

[0023] In the diagram: 1. Main body of the device; 2. Support column leg; 3. Wire; 4. Feed hopper; 5. Transmission box; 6. Support plate; 7. Winding rod; 8. Slot; 9. Stirring rod; 10. Transmission rod; 11. Twin-screw extruder; 12. Extrusion groove; 13. Baffle; 14. Telescopic rod; 15. Support plate; 16. Electric telescopic rod; 17. Bracket; 18. Feed pipe; 19. Extrusion pipe. Detailed Implementation

[0024] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0025] The accompanying drawings in this embodiment of the invention: The different types of cross-sectional lines in the drawings are not labeled according to national standards, nor do they specify the material requirements of the components. They are used to distinguish the cross-sectional views of the components in the drawings.

[0026] Please see Figure 1-3 An extrusion molding mechanism for a twin-screw extruder of a polymer waterproof membrane includes a main body 1, a support column 2 mounted on the lower surface of the main body 1, an electrical wire 3 mounted on the rear surface of the main body 1, a feed hopper 4 mounted on the upper surface of the main body 1, and a transmission box 5 mounted on one side of the feed hopper 4. The main body 1 enables the manufacture of waterproof membranes from polymer materials. The support column 2 supports the main body 1, the feed hopper 4 allows the polymer material to be added to the main body 1, and the transmission structure inside the transmission box drives the main body 1.

[0027] Among them, a support frame 6 is installed on one side surface of the main body 1, and a roll rod 7 is installed on the inner side surface of the support frame 6. A slot 8 is opened on the surface of the roll rod 7. The support frame 6 can support the roll rod 7, and the rolled rod 7 can be clamped onto the surface of the rolled rod 7 under the action of the slot 8, and then rolled into a roll under the action of the roll rod 7.

[0028] The feed hopper 4 is equipped with a stirring rod 9, and a transmission rod 10 is installed below the stirring rod 9. A twin-screw extruder 11 is installed on one side of the transmission rod 10. The stirring rod 9 can mix the polymer material, and the mixed polymer material can be transported into the twin-screw extruder 11. Under the action of the transmission rod 10, the polymer material can be transported through the twin-screw extruder 11.

[0029] The twin-screw extruder 11 has an extrusion groove 12 installed on one side, and a baffle 13 installed on one side surface of the extrusion groove 12. A telescopic rod 14 is installed on the upper surface of the baffle 13. When the polymer material is transported into the extrusion groove 12, the baffle 13 can seal the extrusion groove 12 under the action of the telescopic rod 14. Then, under the action of the electric telescopic rod 16, the support 17 is activated, which in turn activates the support plate 15. This allows the support plate 15 to be squeezed inward under sealed conditions, thus enabling the polymer material to be extruded normally.

[0030] Among them, a support plate 15 is installed on the upper surface of the extrusion groove 12, and an electric telescopic rod 16 is installed on the inner side of the support plate 15.

[0031] Among them, the electric telescopic rod 16 is equipped with a bracket 17, and the extrusion groove 18 is equipped with a conveying pipe 12 on one side and an extrusion pipe 19 on the other side. Through the extrusion pipe 19, the polymer material can be extruded and molded, which facilitates the centralized collection in the later stage.

[0032] The extrusion molding method of this twin-screw extruder includes the following steps:

[0033] Step 1: Put granular or powdered EVA resin and linear low-density polyethylene resin into a mixer and mix for 10-30 minutes. Then feed the material into a screw extruder, heat it until plasticized, and extrude it into a calender.

[0034] Step 2, First Calendering: Place the non-woven fabrics printed with different patterns and colors into the calendering machine and place them on the surface of the above materials. After calendering, the materials and the non-woven fabrics printed with patterns are bonded together and pressed into a 1mm thick sheet. Then, the edges are cut and the sheet is rolled into a roll.

[0035] Step 3: Mix 65 parts of granular or powdered transparent EVA resin and 35 parts of linear low-density polyethylene resin without adding any dye in a mixer. The mixture is then fed into a screw extruder, heated to plasticize, and extruded into a calender.

[0036] Step 4, Second Calendering: At this time, put the rolls from the first calendering into the calendering machine together, with the non-woven fabric on the outer surface of both rolls, and calender them. Then, trim the edges and roll them up to form the bucket rolls with various patterns or designs as required.

[0037] The thickness of the rolled sheet is 1.8-2.2 mm.

[0038] Mix for 10-20 minutes using a mixer.

[0039] When the system is working, such as Figure 2 As shown, during use, the device body 1 can manufacture waterproof membranes from polymer materials. The support column 2 can support the device body 1. The feed hopper 4 can add polymer materials into the device body 1. The transmission structure inside the transmission box can drive the device body 1.

[0040] The set roller 7 can be used to hold the formed waterproof roll material on the surface of the roller 7 under the action of the slot 8. Then, it can be rolled into a roll under the action of the roller 7. The set stirring rod 9 can mix the polymer material, so that the mixed polymer material can be transported into the twin screw extruder 11. Thus, the polymer material can be transported through the twin screw extruder 11 under the action of the transmission rod 10.

[0041] The baffle 13 can seal the extrusion groove 12 under the action of the telescopic rod 14, and then the support 17 can be acted on under the action of the electric telescopic rod 16, thereby acting on the support plate 15, and then the support plate 15 can be squeezed inward under sealed conditions, so that the polymer material can be extruded normally.

[0042] The extrusion tube 19 allows for the extrusion molding of polymer materials, facilitating their subsequent centralized collection.

[0043] Example 1

[0044] During the extrusion molding process of a twin-screw extruder, granular or powdered EVA resin and linear low-density polyethylene resin are mixed together in a mixer for 10-30 minutes. The material is then fed into the screw extruder, heated to plasticize, and extruded, flowing into a calender. Non-woven fabrics printed with different patterns and colors are also placed in the calender, positioned on the surface of the material. After calendering, the material and the patterned non-woven fabric are bonded together and pressed into a 1mm thick sheet. The edges are then trimmed and rolled into a roll. Alternatively, 65 parts of granular or powdered transparent EVA resin and 35 parts of linear low-density polyethylene resin, without any dyes, are mixed in a mixer. The material is fed into the screw extruder, heated to plasticize, and extruded, flowing into a calender. At this point, the rolls from the first calendering are also placed in the calender, with the non-woven fabric positioned on the outer surface of both rolls. Calendering is then performed, followed by trimming and rolling to form various patterned or decorative bucket rolls.

[0045] For film thickness inspection, use the needle puncture method to prick 5 points per 100 square meters, measure the height with a ruler, and take the average value. The film thickness should be greater than 3 mm.

[0046] The film thickness was measured to be 4 millimeters.

[0047] Example 2

[0048] During the extrusion molding process of a twin-screw extruder, granular or powdered EVA resin and linear low-density polyethylene resin are mixed together in a mixer for 20 minutes. The material is then fed into the screw extruder, heated to plasticize, and extruded, flowing into a calender. Non-woven fabrics printed with different patterns and colors are also placed in the calender, positioned on the surface of the material. After calendering, the material and the patterned non-woven fabric are bonded together and pressed into a 1mm thick sheet. The edges are then trimmed and rolled into a roll. Alternatively, 65 parts of granular or powdered transparent EVA resin and 35 parts of linear low-density polyethylene resin, without any dyes, are mixed in a mixer. The material is fed into the screw extruder, heated to plasticize, and extruded, flowing into a calender. At this point, the rolls from the first calendering are also placed into the calender, with the non-woven fabric positioned on the outer surface of both rolls. Calendering is then performed, followed by trimming and rolling to form various patterned or decorative bucket rolls.

[0049] For the elongation at break test, during waterproofing construction, the film is applied multiple times to a flat glass plate, with a film thickness of 1.0-1.3 mm. After being left for 6 days, it is soaked in 1% alkaline water for 9 days, and then dried in an oven at 50℃±2℃ for 24 hours. A tensile test is then performed, and the elongation retention rate is required to reach 80%. If the standard is not met, it indicates that the proportion of emulsion added during construction is insufficient.

[0050] After testing, the elongation retention rate of the roll material reached 82%.

[0051] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0052] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An extrusion molding mechanism for a twin-screw extruder of a polymer waterproof membrane, comprising a main body, characterized in that: The device body has supporting columns mounted on its lower surface, electrical wires mounted on its rear surface, a feeding hopper mounted on its upper surface, a transmission box mounted on one side of the feeding hopper, a support frame mounted on one side of the device body, a coil rod mounted on the inner surface of the support frame, and a slotted groove on the surface of the coil rod. A stirring rod is mounted inside the feeding hopper, a transmission rod is mounted below the stirring rod, a twin-screw extruder mounted on one side of the transmission rod, an extrusion groove mounted on one side of the twin-screw extruder, a baffle mounted on one side of the extrusion groove, a telescopic rod mounted on the upper surface of the baffle, a support plate mounted on the upper surface of the extrusion groove, an electric telescopic rod mounted inside the support plate, a bracket mounted on the surface of the electric telescopic rod, and a conveying pipe mounted on one side and an extrusion pipe mounted on the other side of the extrusion groove.

2. The extrusion molding mechanism of a twin-screw extruder for a polymer waterproof membrane according to claim 1, characterized in that: The extrusion molding method of this twin-screw extruder includes the following steps: Step 1: Put granular or powdered EVA resin and linear low-density polyethylene resin into a mixer and mix for 10-30 minutes. Then feed the material into a screw extruder, heat it until plasticized, and extrude it into a calender. Step 2, First Calendering: Place the non-woven fabrics printed with different patterns and colors into the calendering machine and place them on the surface of the above materials. After calendering, the materials and the non-woven fabrics printed with patterns are bonded together and pressed into a 1mm thick sheet. Then, the edges are cut and the sheet is rolled into a roll. Step 3: Mix 65 parts of granular or powdered transparent EVA resin and 35 parts of linear low-density polyethylene resin without adding any dye in a mixer. The mixture is then fed into a screw extruder, heated to plasticize, and extruded into a calender. Step 4, Second Calendering: At this time, put the rolls from the first calendering into the calendering machine together, with the non-woven fabric on the outer surface of both rolls, calender them, then trim the edges and roll them up to form the desired bucket rolls with various patterns or designs.

3. The extrusion molding mechanism of a twin-screw extruder for a polymer waterproof membrane according to claim 2, characterized in that: The thickness of the calendered sheet is 1.8-2.2 mm.

4. The extrusion molding mechanism of a twin-screw extruder for a polymer waterproof membrane according to claim 2, characterized in that: In step three, mix using a mixer for 10-20 minutes.

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