Equipment for vertical roll forming of reinforcing belt and reinforcing belt production line

Abstract

The utility model relates to the field of production equipment of pipeline reinforcing belts, and discloses equipment for vertical rolling forming of a reinforcing belt and a reinforcing belt production line, which comprise a sheet extrusion system (70) with an extrusion die (703), a scraper assembly arranged below the extrusion die (703) and comprising scrapers (80) oppositely arranged at intervals, and at least one rolling composite roller group, the scraper assembly is arranged to allow multiple columns of reinforced wires (100) running side by side and molten plastic sheets (200) extruded from the two sides of the reinforced wires (100) to penetrate through the intervals between the scrapers (80) to run from top to bottom, and the sides, away from the reinforced wires (100), of the molten plastic sheets (200) can be extruded by the scraper assembly. Compared with a rolling composite roller set, the scraping plate, used for making contact with the molten plastic sheet which is just extruded, of the scraping plate assembly can serve as a loss part to be replaced at low cost in good time, and the disassembly and assembly difficulty and the equipment cost are remarkably reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the production equipment of pipeline reinforcing belt, concretely relates to a kind of vertical roller pressure forming reinforcing belt equipment.On this basis, the utility model further relates to a kind of reinforcing belt production line comprising the equipment. BACKGROUND

[0002] In order to improve the mechanical properties of the conveying pipeline, it is usually necessary to use a winding machine to wind steel cord, steel fiber tape, fiber tape and other reinforcing materials onto a plastic core pipe to form a composite pipeline. Among them, in order to ensure good reinforcing effect and composite effect with the plastic core pipe, the reinforcing belt used for the production of such composite pipeline usually includes multiple reinforcing filaments (such as steel cord, steel fiber, steel wire) and plastic coated thereon, and is formed into a flat belt shape, so as to be heat-combined onto the outer peripheral surface of the plastic core pipe by spiral winding.

[0003] The quality of the reinforcing belt has an important influence on the performance of the composite pipeline using it. In the traditional technology, the reinforcing belt can be manufactured by a reinforcing belt production line with a belt-making die, wherein the belt-making die can be provided with a vacuum cavity and a composite cavity, the reinforcing filaments run through the vacuum cavity and the composite cavity in sequence after being separated and heated, and then are combined with molten plastic in the composite cavity to form the reinforcing belt. By making the reinforcing filaments run through the vacuum cavity, air bubble defects in the manufactured reinforcing belt can be effectively avoided, and the bonding density of the reinforcing filaments and the plastic in the reinforcing belt is enhanced. However, since the reinforcing filaments need to pass through the core die small hole of the belt-making die to enter the vacuum cavity and the composite cavity, such belt-making die and production process have problems such as easy wear of the anticorrosion layer on the surface of the reinforcing filaments and the core die small hole, and difficulty in ensuring the product quality and production efficiency of the reinforcing belt.

[0004] To this end, Chinese invention patent application CN118744515A discloses a vertical roller pressure forming reinforcing belt equipment and reinforcing belt production line. As shown in Figures 1 to 3 the reinforcing belt production line includes a yarn feeding, a separating system, a vertical roller pressure forming equipment 106, a cooling and shaping device of reinforcing belt 300, a traction, cutting and winding equipment, etc. Specifically, the yarn feeding system can be provided as a spool 101 capable of unwinding multiple reinforcing filaments 100, such as steel cord, steel fiber, steel wire, etc. For this purpose, the spool 101 can have multiple filament spindles 101a wound with reinforcing filaments 100 respectively, so as to be able to release multiple reinforcing filaments 100 (single filaments). When the reinforcing filaments 100 on the filament spindles 101a are used up, new filament spindles 101a can be replaced, or the filament spindles 101a with different reinforcing filaments 100 can be replaced as a whole according to production needs.

[0005] The uncoiled reinforcing filaments 100 need to be combed to be regularly arranged in a predetermined manner, so that they can pass through the yarn collector 102, the lead-in compression roller 103, the flattening roller 104, and the separating comb 105, etc. Among them, the yarn collector 102 can concentrate the multiple reinforcing filaments 100 (single filaments) uncoiled from the reel 101 into a bundle, and then the separating comb 105 separates the reinforcing filaments 100 into multiple columns arranged side by side, so as to be subsequently compounded with the extruded molten plastic sheet 200 through the vertical roller compression molding equipment 106 and formed into a reinforcing belt 300. In order to arrange the reinforcing filaments 100 in the same plane at a predetermined interval, the front and rear of the separating comb 105 are respectively provided with flattening rollers 104 to support the reinforcing filaments 100, and the height position of the reinforcing filaments 100 when passing through the separating comb 105 is constrained by the lead-in compression roller 103 and the first deflection roller 61a.

[0006] Then, the reinforcing filaments 100 can be heated and treated, and integrated with the extruded molten plastic sheet 200 in the vertical roller compression molding equipment 106 to form a reinforcing belt 300. The reinforcing belt 300 rolled and molded by the vertical roller compression molding equipment 106 has a high temperature, and thus needs to be further cooled and shaped.

[0007] Therefore, the reinforcing belt 300 output by the vertical roller compression molding equipment 106 can pass through the compression roller device 107 to run in the horizontal direction, and then pass through the cooling device such as the water cooling tank 108 to completely cool and shape the reinforcing belt 300. Then, the reinforcing belt 300 is pulled by the traction machine 110 to continue to run backward, and the downstream of the water cooling tank 108 can be provided with multiple air knife drying devices 109, etc. for blowing dry the moisture on the surface of the reinforcing belt 300. Finally, the reinforcing belt 300 can be wound into a roll by the winding machine 112, and according to the winding specification, the reinforcing belt cutting device 111 can be used to cut the reinforcing belt 300 in time.

[0008] The reinforcing belt production line adopts the vertical roller compression molding equipment 106 (i.e. the vertical roller compression molding reinforcing belt equipment) to realize a roller compression molding process different from the above-mentioned traditional technology, such as Figure 3As shown, the vertical roll forming equipment 106 includes a sheet extrusion system 70 and at least one set of roll forming roller groups (a first set of roll forming roller groups 67a, a second set of roll forming roller groups 67b and a third set of roll forming roller groups 67c), wherein the sheet extrusion system 70 has an extrusion die 703 and is capable of extruding molten plastic sheets 200 on both sides of the multiple rows of reinforcing filaments 100 running side by side; the roll forming roller groups include rollers 671 arranged in pairs below the extrusion die 703 and spaced apart from each other, whereby the sheet extrusion system 70 extrudes the molten plastic sheets 200 above the roll forming roller groups. The molten plastic sheets 200 and the reinforcing filaments 100 therebetween are synchronously fed between the rollers 671 arranged in pairs, so that the rollers 671 can roll the sides of the molten plastic sheets 200 facing away from each other, so that the molten plastic sheets 200 extruded on both sides are bonded together and fix the multiple rows of reinforcing filaments 100 running side by side therebetween to form the reinforcing belt 300.

[0009] In the above roll forming process, when the reinforcing filaments 100 and the molten plastic sheets 200 pass through the first set of roll forming roller groups 67a and are rolled, due to the high process temperature, in order to prevent the molten plastic from being bonded to the rollers 671, it is usually necessary to mirror polish the surface of the rollers 671 or coat a polytetrafluoroethylene or other anti-sticking coating. And after a period of use, the rollers 671 need to be disassembled for treatment or replacement, which results in high maintenance cost. Utility model content

[0010] The utility model aims at overcoming the problem of high maintenance cost of the vertical roll forming reinforcing belt equipment in the prior art, and provides a vertical roll forming reinforcing belt equipment which can effectively reduce the maintenance cost caused by the high process temperature in the reinforcing belt roll forming process and the easy bonding of molten plastic to the rollers.

[0011] In order to achieve the above-mentioned purpose, the utility model provides a vertical roll forming reinforcing belt equipment, which comprises:

[0012] A sheet extrusion system having an extrusion die and being arranged to extrude molten plastic sheets on both sides of the multiple rows of reinforcing filaments running side by side;

[0013] A scraper assembly arranged below the extrusion die and comprising scrapers arranged opposite to each other in a direction perpendicular to the arrangement direction of the reinforcing filaments, the multiple rows of reinforcing filaments running side by side and the molten plastic sheets extruded on both sides thereof pass through the space between the scrapers from top to bottom, and the scraper assembly can extrude the side of the molten plastic sheets facing away from the reinforcing filaments; and

[0014] at least one set of roll compounding roller groups, each of which comprises rollers arranged in pairs at intervals from each other below the doctor blade assembly, the rollers arranged in pairs defining a roll compounding gap between them for receiving the reinforcing filaments and the molten plastic sheet extruded via the doctor blade assembly, and capable of bonding the plurality of columns of reinforcing filaments running side by side with the molten plastic sheet on both sides thereof by roll compounding the molten plastic sheet to form a reinforcing tape.

[0015] Preferably, the interval between the doctor blades decreases in the running direction of the reinforcing filaments to form an opening at one end toward the extrusion die allowing the molten plastic sheet to run obliquely to the running direction of the reinforcing filaments into the interval between the doctor blades.

[0016] Preferably, the side of the doctor blade facing the molten plastic sheet is formed with an arcuate portion and a planar portion in sequence contacting the molten plastic sheet, the planar portion being parallel to the arrangement plane of the reinforcing filaments.

[0017] Preferably, both sides of at least one of the doctor blades in parallel to the arrangement direction of the reinforcing filaments are formed with protrusions extending toward the other doctor blade to extrude the edges of the molten plastic sheet by the protrusions when the reinforcing filaments and the molten plastic sheet run through the interval between the doctor blades.

[0018] Preferably, the interval of the doctor blades at the position of the protrusions is 0.5mm to 10mm.

[0019] Preferably, the side of the doctor blade facing the molten plastic sheet is formed as a polished surface or coated with an anti-sticking coating, or the doctor blade comprises a doctor blade base and an anti-sticking plate connected to the side of the doctor blade base facing the molten plastic sheet.

[0020] Preferably, the doctor blade assembly further comprises a doctor blade interval adjusting mechanism for adjusting the size of the interval between the doctor blades.

[0021] Preferably, the equipment for vertically roll compounding a reinforcing tape comprises a plurality of sets of the roll compounding roller groups arranged in the running direction of the reinforcing filaments, wherein the roll compounding gap formed by the roll compounding roller groups above is equal to or greater than the roll compounding gap formed by the roll compounding roller groups below, and a wind cooling device is arranged between the doctor blade assembly and the first set of roll compounding roller groups and / or between adjacent roll compounding roller groups, the wind cooling device being arranged on both sides of the reinforcing tape opposite to the tape surface.

[0022] Preferably, the rollers arranged in pairs are arranged horizontally at intervals from each other, and the respective roller shafts extend in horizontal direction, the reinforcing filaments vertically downward entering the roll compounding gap.

[0023] The second aspect of the utility model provides a reinforcing tape production line comprising the equipment of the vertical roll forming reinforcing tape.

[0024] Through the above technical scheme, the equipment of the vertical roll forming reinforcing tape of the utility model replaces the first roll composite roller group in the prior art with a scraper assembly between the sheet extrusion system and the roll composite roller group, so that the molten plastic sheet running through the interval is preliminarily bonded with the multiple rows of reinforcing wire materials running side by side. Compared with the roll composite roller group, the scraper of the scraper assembly used for contacting the molten plastic sheet just extruded can be replaced in time as a consumable part at a lower cost, thereby significantly reducing the disassembly and assembly difficulty and equipment cost. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is the front view of the upstream equipment in the reinforcing tape production line of the prior art, comprising a wire feeding and combing system and a vertical roll forming equipment, etc.;

[0026] Figure 2 is the front view of the downstream equipment in the reinforcing tape production line of the prior art, comprising a cooling and shaping device of the reinforcing tape, traction, cutting and winding equipment, etc., the upstream end on the right side of the figure is connected with the downstream end on the left side of Figure 1 ;

[0027] Figure 3 is the enlarged view of the partial S1 in Figure 1 ;

[0028] Figure 4 is the front view of the equipment of the vertical roll forming reinforcing tape according to a preferred embodiment of the utility model;

[0029] Figure 5 is the perspective view of a scraper that can be used in the equipment of the vertical roll forming reinforcing tape;

[0030] Figure 6 is the perspective view of another scraper that can be used in the equipment of the vertical roll forming reinforcing tape;

[0031] Figure 7 is the perspective view of another scraper that can be used in the equipment of the vertical roll forming reinforcing tape;

[0032] Figure 8 is the sectional view of the scraper in Figure 7 ;

[0033] Figure 9 is the perspective view of another scraper that can be used in the equipment of the vertical roll forming reinforcing tape;

[0034] Figure 10 is the perspective view of another scraper that can be used in the equipment of the vertical roll forming reinforcing tape; Figure 9A schematic view of a squeegee assembly of the squeegee shown and a partial enlarged view thereof.

[0035] Reference numerals

[0036] 101 - a pay-off stand; 101a - a wire ingot; 102 - a wire collector; 103 - an entry press roller; 104 - a supporting roller; 105 - a wire separator comb; 106 - a vertical roller compaction forming device; 107 - a press roller device; 108 - a water cooling tank; 109 - a blow-drying device; 110 - a pulling machine; 111 - a reinforcing tape cutting device; 112 - a winding machine;

[0037] 60 - a machine frame; 61a, 61b, 61c - deflection rollers; 62 - an oven; 63 - a wire separator roller; 64 - a hot roller; 65 - a wire temperature maintaining device; 66 - a wire combing device; 67a, 67b, 67c - a roller compaction roller set; 671 - a roller; 68 - a gap adjustment mechanism; 69 - an air cooling device; 70 - a sheet extrusion system; 80 - a squeegee; 80a - a curved surface portion; 80b - a flat surface portion; 80c - a protrusion; 80d - a squeegee base body; 80e - an anti-sticking plate; 81 - a squeegee spacing adjustment mechanism;

[0038] 100 - a reinforcing wire; 200 - a molten plastic sheet; 300 - a reinforcing tape. DETAILED DESCRIPTION

[0039] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the present application, and are not intended to limit the present application.

[0040] In the present application, unless otherwise stated, the orientation words such as "up, down, left, right" generally refer to the up, down, left, right shown in the drawings; "inner, outer" refers to the inner, outer relative to the contour of each component itself. In order to clearly understand the present application, the following will be combined with Figures 4 to 10 The parts of the present application that are different from the prior art will be described in detail, but it should be understood that, for example, the parts of the reinforcing tape production line shown in Figure 1 and Figure 2 The other parts of the reinforcing tape production line except the vertical roller compaction forming device 106 shown are also applicable to the reinforcing tape production line of the present application, and the description of the composition, arrangement mode and working process thereof will be omitted below.

[0041] Comparison Figure 3 and Figure 4It can be seen that in the vertical roll forming reinforced tape equipment of the preferred embodiment of the present application, only the scraper assembly (scraper 80, scraper spacing adjustment mechanism 81) is used to replace the first group of roll pressing composite roller group 67a in the prior art, and the second group of roll pressing composite roller group 67b and the third group of roll pressing composite roller group 67c can be the same as the prior art. In this case, although the following will still use the expression way of the second group of roll pressing composite roller group 67b and the third group of roll pressing composite roller group 67c, the second group of roll pressing composite roller group 67b actually represents the first group of roll pressing composite roller group in the vertical roll forming reinforced tape equipment in the following description.

[0042] Referring to Figure 4 As shown in the figure, one aspect of the present application provides a vertical roll forming reinforced tape equipment (i.e. vertical roll forming equipment 106), which comprises a sheet extrusion system 70, a scraper assembly and at least one group of roll pressing composite roller group, wherein the sheet extrusion system 70 has an extrusion die 703 and is arranged to be able to extrude molten plastic sheet 200 on both sides of the side-by-side running multiple columns of reinforcing filaments 100; the scraper assembly is arranged below the extrusion die 703 and comprises scrapers 80 arranged opposite to each other at intervals in a direction perpendicular to the arrangement direction of the reinforcing filaments 100, and the side-by-side running multiple columns of reinforcing filaments 100 and the molten plastic sheet 200 extruded on both sides thereof pass through the interval between the scrapers 80 from top to bottom, and the molten plastic sheet 200 can be extruded by the scraper assembly on the side away from the reinforcing filaments 100, so that the molten plastic sheet 200 and the reinforcing filaments 100 are bonded to each other; the roll pressing composite roller group comprises rollers 671 arranged below the extrusion die 703 and arranged in pairs at intervals, so that the sheet extrusion system 70 extrudes the molten plastic sheet 200 above the roll pressing composite roller group. The molten plastic sheet 200 and the reinforcing filaments 100 therebetween are sequentially entered into the interval between the scrapers 80 and between the rollers 671 arranged in pairs, so that the molten plastic sheet 200 can be extruded by the scrapers 80 and the rollers 671 on the sides away from each other, so that the molten plastic sheet 200 extruded on both sides is bonded to form a reinforcing tape 300, and the side-by-side running multiple columns of reinforcing filaments 100 are fixed therebetween. In order to achieve this, the rollers 671 arranged in pairs define a roll pressing gap for receiving the reinforcing filaments 100 and the molten plastic sheet 200 extruded on both sides thereof, and the roll pressing gap should not be less than the design thickness of the reinforcing tape 300 required to be produced.

[0043] Among them, the roll pressing gap is arranged to be able to receive the reinforcing filaments 100 running from top to bottom, and correspondingly, the extruded molten plastic sheet 200 also runs from top to bottom when passing through the roll pressing gap. Thus, the molten plastic sheet 200 extruded on both sides of the reinforcing filaments 100 can have relatively good consistency under the action of gravity, which is beneficial to ensure the product quality of the produced reinforcing tape 300.

[0044] The vertical roller forming equipment 106 of the utility model adopts hot-pressing composite process when manufacturing the reinforcing belt, cancels the belt manufacturing die and in-mold composite process for limiting the composite cavity in the traditional technology, extrudes the molten plastic sheet 200 on both sides of the multiple columns of reinforcing filaments 100 running side by side through the sheet extrusion system 70, and adopts at least one set of roller composite roller group to roll the molten plastic sheet 200 to make it composite and bond with the reinforcing filament 100, so that the reinforcing belt 300 is formed by rolling, which has a completely different forming process from the prior art. Since the reinforcing filament does not need to run through the core die hole and the traditional forming process of in-mold composite is abandoned, the problem of difficult to ensure product quality and production efficiency in the prior art can be avoided.

[0045] Especially, the reinforcing filament is generally arranged to run in the horizontal direction in the production process of the traditional technology, so as to avoid the problem that the production efficiency and product quality are not improved due to the bending of the reinforcing filament. The utility model provides a vertical roller forming equipment 106 adopting a new process, and is arranged so that the reinforcing filament 100 runs from top to bottom at the composite position with the molten plastic sheet 200, the molten plastic sheet 200 is rolled on both sides by the roller composite roller group to realize the continuous roller forming of the reinforcing belt, which can better adapt to the material properties during composite, easily control the tension of the reinforcing filament 100 and extrude the molten plastic sheet 200 suitable for composite, not only significantly reduce the requirement for the composite process condition, but also facilitate to ensure the product quality of the reinforcing belt.

[0046] Among them, the rollers 671 arranged in pairs can be arranged horizontally spaced from each other, and the respective roller shafts extend in the horizontal direction, and the reinforcing filament 100 vertically enters the roller gap downward. Thus, the molten plastic sheet 200 on both sides can have good consistency under the action of gravity and be uniformly rolled when passing through the roller gap, ensuring the product quality of the produced reinforcing belt 300. In other embodiments, the downward running direction of the reinforcing filament 100 can also have a certain inclination angle relative to the vertical direction, as long as it does not cause the molten plastic sheet 200 extruded to be severely deformed before being substantially shaped.

[0047] The vertical roller forming reinforcing belt equipment of the utility model replaces the first set of roller composite roller group in the prior art between the sheet extrusion system 70 and the roller composite roller group with a scraper assembly to extrude the molten plastic sheet 200 running through the gap therebetween, so that the molten plastic sheet 200 is preliminarily bonded with the multiple columns of reinforcing filaments 100 running side by side. Compared with the roller composite roller group, the scraper 80 of the scraper assembly for contacting the molten plastic sheet 200 just extruded can be replaced in time as a consumable part at a lower cost, which significantly reduces the disassembly difficulty and equipment cost.

[0048] The vertical roller forming equipment 106 realizes continuous roller forming of the reinforcing tape by roller pressing the molten plastic sheet 200 through the roller pressing composite roller group, and can be provided with one or more roller pressing composite roller groups. In the illustrated preferred embodiment, the vertical roller forming equipment 106 has two roller pressing composite roller groups arranged along the running direction of the reinforcing filament 100, which are the second roller pressing composite roller group 67b and the third roller pressing composite roller group 67c, respectively. Among them, since the reinforcing filament 100 runs vertically downward at this position, the above two roller pressing composite roller groups are arranged along the same vertical line.

[0049] When the reinforcing filament 100 and the molten plastic sheets 200 extruded on both sides thereof, respectively, pass through the gap between the two scrapers 80 of the scraper assembly, the molten plastic sheets 200 are extruded by the scrapers 80 to be bonded to each other, at this time, the formed reinforcing tape has a relatively high temperature, which has not yet been formed into a predetermined shape (especially thickness). The preliminary formed reinforcing tape continues to pass through the roller pressing of the second roller pressing composite roller group 67b and the third roller pressing composite roller group 67c, and can be further precisely formed. Thus, through multi-pass roller pressing (and subsequent cooling described below), the reinforcing tape can be gradually formed into a predetermined design thickness, so that the finally formed reinforcing tape 300 has high product quality. For this purpose, the gap between the two scrapers 80 can be smaller than the roller pressing gap of the roller pressing composite roller group, and the roller pressing gap formed by the upper roller pressing composite roller group can be set to be equal to or greater than the roller pressing gap formed by the lower roller pressing composite roller group.

[0050] In order to facilitate the application of gradually increasing extrusion to the molten plastic sheet 200, the gap between the two scrapers 80 in the scraper assembly can decrease along the running direction of the reinforcing filament 100, and an opening can be formed at one end toward the extrusion die 703 to allow the molten plastic sheet 200 to run obliquely into the gap between the scrapers 80 relative to the running direction of the reinforcing filament 100.

[0051] Figure 5A squeegee 80 that can be used in the above-described squeegee assembly is shown. The squeegee 80 is formed with an arcuate portion 80a and a flat portion 80b on the side facing the molten plastic sheet 200, which are in contact with the molten plastic sheet 200 in that order. The flat portion 80b is parallel to the arrangement plane of the reinforcing filaments 100. Thus, above the arcuate portion 80a, the spacing between the two squeegees 80 can be set large to form an opening, allowing the molten plastic sheet 200 to be extruded in a direction inclined with respect to the running direction of the reinforcing filaments 100 and into the spacing between the two squeegees 80. Further, the molten plastic sheet 200 is in contact with the squeegee 80 at the arcuate portion 80a, so that the molten plastic sheet 200 on both sides preliminarily meets. When reaching the position corresponding to the flat portion 80b, the squeegee 80 exerts an extrusion force on the molten plastic sheet 200 substantially perpendicular to the running direction of the reinforcing filaments 100, to preliminarily form the reinforcing tape. Figure 6 Another squeegee 80 is shown, which is different from the one shown in Figure 5 The arcuate portion 80a of this squeegee 80 extends from the top end thereof to the flat portion 80b near the bottom end. In these squeegees 80, the arcuate portion 80a and the flat portion 80b can be mirror-polished or coated with a non-stick coating such as polytetrafluoroethylene, to reduce sticking to the molten plastic sheet 200 and reduce the frequency of replacement.

[0052] Figure 7 and Figure 8 A squeegee 80 used in a preferred embodiment is shown. The squeegee 80 includes a squeegee base 80d and a non-stick plate 80e attached to the side of the squeegee base 80d facing the molten plastic sheet 200. The squeegee base 80d can be formed by bending a steel plate, and the non-stick plate 80e can be a polytetrafluoroethylene plate or the like that is less likely to stick to the molten plastic sheet 200. In this way, the non-stick plate 80e can be attached to the squeegee base 80d in a detachable manner, so that only the non-stick plate 80e needs to be replaced when necessary.

[0053] Referring to Figure 9 and Figure 10As shown, in a preferred embodiment, the two sides of the scraper 80 along the direction parallel to the arrangement direction of the reinforcing filaments 100 can be formed with protrusions 80c extending towards the other scraper 80, so as to extrude the edge of the molten plastic sheet 200 by the protrusions 80c when the reinforcing filaments 100 and the molten plastic sheet 200 pass through the gap between the two scrapers 80. In this way, by providing the protrusions 80c, the two scrapers 80 can have a smaller gap at the two edge positions, and when the reinforcing filaments 100 and the molten plastic sheet 200 pass through the gap between the two scrapers 80, the protrusions 80c extrude the molten plastic towards the part where the reinforcing filaments 100 are located, which not only ensures the fusion degree of the plastic at the edge position of the reinforcing tape, but also enhances the adhesion strength of the edge plastic and the outermost reinforcing filaments, avoiding the existence of bubbles at the edge part. The gap between the two scrapers 80 at the position of the protrusions 80c is preferably 0.5mm to 10mm.

[0054] Referring again to Figure 4 As shown, in a preferred embodiment, the scraper assembly can further comprise a scraper gap adjusting mechanism 81 for adjusting the size of the gap between the scrapers 80, which can adopt a screw rod transmission form and be driven by a servo motor to ensure the adjustment accuracy, or it can also be provided as a cylinder directly driving the scraper 80, or a hand wheel for manual adjustment.

[0055] In order to achieve good rolling effect, the rollers 671 in the rolling composite roller group are preferably driven to rotate during the rolling process to roll on the surface of the molten plastic sheet 200. In particular, the rollers 671 of the second group of rolling composite roller groups 67b should be driven to rotate, and for this purpose, a servo driving mechanism (such as a servo motor) can be provided to drive the rollers 671 to rotate to roll on the surface of the molten plastic sheet 200. Through such rolling compounding, bubbles can be effectively prevented from being mixed in the formed reinforcing tape 300 (gas at the joint part of the reinforcing filaments 100 and the molten plastic sheet 200 is effectively extruded), so that the reinforcing filaments 100 and the molten plastic sheet 200 are pressed and compacted to ensure good bonding quality.

[0056] Further, the scraper assembly and the rolling composite roller group arranged at the uppermost position (i.e. the second group of rolling composite roller groups 67b shown in the figure) and / or between adjacent rolling composite roller groups can be provided with an air cooling device 69 arranged on the two sides of the reinforcing tape 300 opposite to the tape surface, which blows cooling air to the preliminary rolling formed reinforcing tape 300 to preliminarily cool and shape the surface of the reinforcing tape 300, and then further rolls by the next group of rolling composite roller groups to realize step-by-step shaping and cooling of the reinforcing tape 300, and finally meet the process thickness requirement.

[0057] According to the process requirements and product specifications, it can be necessary to adjust the roll gap between the rollers 671 in the roll compounding roller set. For this purpose, the vertical roll forming equipment 106 of the present application can be provided with a gap adjustment mechanism 68 for adjusting the roll gap. The gap adjustment mechanism 68 can be provided in various forms as long as it can adjust the spacing between the pair of rollers 671 arranged. Preferably, the gap adjustment mechanism 68 adopts a threaded screw drive form and is driven by a servo motor to ensure the adjustment accuracy. As an alternative, it can also be provided as a cylinder directly driving the rollers 671, or a hand wheel for manual adjustment.

[0058] The gap adjustment mechanism 68 is drivingly connected to one or both rollers 671 in the roll compounding roller set. In one embodiment, the shaft center of one roller in the roll compounding roller set is fixed, and the shaft center of the other roller can be adjusted, thus it needs to be drivingly connected to the gap adjustment mechanism 68 and can be driven to approach or move away from the fixed roller. In this way, the fixed roller can determine the reference surface of the compounding position, and only one side roller needs to be adjusted when the roll gap needs to be adjusted, which is simple to operate and easy to control. In another embodiment, the shaft centers of both rollers in the roll compounding roller set can be adjusted to approach or move away from the running path of the reinforcing fiber 100 synchronously, which can be achieved by using positive and negative threaded screw drives, etc. Thus, when the roll gap is adjusted, there is no need to adjust the running path of the reinforcing fiber 100 at this position.

[0059] Typically, the sheet extrusion system 70 for extruding the molten plastic sheet 200 can include an extruder and a matching extrusion flow channel and an extrusion die 703, the extrusion flow channel being used to deliver the molten plastic to the extrusion die 703 to extrude the required molten plastic sheet 200 at a predetermined position. In order to facilitate debugging, the sheet extrusion system 70 can be provided with the ability to adjust the position of the extrusion die 703 in three dimensions.

[0060] In addition, the die of the extrusion die 703 can be formed with a plurality of forming grooves (not shown) corresponding to the side-by-side running reinforcing fiber 100, such as a die with grooves or a slot, which is beneficial to the matching of the extruded molten plastic sheet 200 and the reinforcing fiber 100, thereby further reducing the risk of gas inclusion.

[0061] As aforementioned, before the reinforcing filaments 100 run to the roll compounding roller set, the filaments need to be separated and heated so as to facilitate the bonding with the molten plastic sheet 200 and ensure the product quality. For this purpose, at least part of the components for the filament separation and heating treatment can be integrally arranged on the vertical roll forming device 106. Therefore, along the running direction of the reinforcing filaments, upstream of the squeegee assembly can be provided with a filament heating device for heating the reinforcing filaments 100 and / or a filament separation unit for separating the reinforcing filaments 100 into multiple columns running side by side at a predetermined interval. In the preferred embodiment shown in the drawings, the main filament heating device for heating the reinforcing filaments 100 is an oven 62 arranged on the top of the frame 60, and in addition, downstream thereof can be provided with a hot roller 64 for heating / insulating the reinforcing filaments 100 in the form of hot water circulation or electric heating rod, which also functions to divert the reinforcing filaments 100 to run downward. The filament separation unit includes a filament separation roller 63 (a roller with limiting grooves formed on the outer periphery) or other filament separation components (such as a filament separation comb) arranged between the oven 62 and the hot roller 64.

[0062] In a preferred embodiment of the present application, above the squeegee assembly along the running direction of the reinforcing filaments 100 is further provided with a filament insulating device 65 to maintain the surface temperature of the reinforcing filaments 100 after being heated before running into the squeegee assembly, so as to facilitate the bonding with the molten plastic sheet 200. The filament insulating device 65 can define an insulating channel extending along the running direction of the reinforcing filaments 100, and the insulating channel gradually expands at one end towards the squeegee assembly to form a hot temperature area near the squeegee assembly, which can maintain a higher temperature of the inner side surfaces of the reinforcing filaments 100 and the molten plastic sheet 200 near the joint, facilitating the hot compounding between them.

[0063] Although the reinforcing filaments 100 have been separated into multiple columns running side by side, their positions can still change due to vibration and other factors during the process of running to the roll compounding roller set, affecting the compounding quality. For this purpose, the hot temperature area can be provided with a filament combing device 66 arranged adjacent to the squeegee assembly, through the combing teeth gap of which the reinforcing filaments 100 extend and run into the squeegee assembly, so that the reinforcing filaments 100 more stably enter the interval between the squeegees 80, ensuring a higher compounding quality of the reinforcing belt.

[0064] The above-mentioned various functional components of the vertical roll forming device 106 can be mounted on the frame 60, and the frame 60 can also be provided with diverting rollers to change the running height of the reinforcing filaments 100 and the prepared reinforcing belt 300. In the preferred embodiment shown in the figure, the frame 60 is provided with a first diverting roller 61a, a second diverting roller 61b and a third diverting roller 61c, wherein the reinforcing filaments 100 are unwound, bunched and separated into multiple columns at a first height position, and then diverted upward by passing around the first diverting roller 61a, so as to be lifted to a higher second height after passing around the second diverting roller 61b at the top of the frame 60, thereby facilitating downward running from top to bottom to be compounded with the molten plastic sheet 200. The compounded reinforcing belt 300 can pass around the third diverting roller 61c to change the running direction after being output from the roll compounding roller group, so as to run at a relatively low height level again, facilitating subsequent cooling, shaping and traction and collection.

[0065] The preferred embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited thereto. Within the technical concept of the present application, various simple modifications can be made to the technical solutions of the present application, including the combination of various specific technical features in any suitable manner. In order to avoid unnecessary repetition, the present application will not be described again for various possible combination manners. However, these simple modifications and combinations should also be considered as disclosed content of the present application, and all belong to the protection scope of the present application.

Claims

1. An apparatus for vertical roll-forming of a reinforcing belt, characterised in that, The application relates to a reinforced tape production system. The application comprises: a sheet extrusion system (70) having an extrusion die (703) and arranged to extrude molten plastic sheets (200) on both sides of a plurality of parallel rows of reinforcing filaments (100) running side by side; a doctor blade assembly arranged below the extrusion die (703) and comprising doctor blades (80) arranged opposite to each other in pairs at intervals in a direction perpendicular to the arrangement direction of the reinforcing filaments (100), the plurality of parallel rows of reinforcing filaments (100) running side by side and the molten plastic sheets (200) extruded on both sides thereof passing through the intervals between the doctor blades (80) from top to bottom and being capable of being pressed by the doctor blade assembly on the sides of the molten plastic sheets (200) facing away from the reinforcing filaments (100); and 2. The apparatus for forming a vertical roll-press reinforced tape according to claim 1, wherein, at least one set of roll compounding roller sets (67b, 67c) comprising rollers (671) arranged in pairs at intervals below the doctor blade assembly, the roll compounding gap defined between the rollers (671) arranged in pairs for receiving the reinforcing filaments (100) and the molten plastic sheets (200) pressed by the doctor blade assembly, and being capable of roll compounding the plurality of parallel rows of reinforcing filaments (100) and the molten plastic sheets (200) on both sides thereof by roll compounding the molten plastic sheets (200) to form a reinforced tape (300).

3. The apparatus for forming a vertical roll-press reinforced tape according to claim 1, wherein, The intervals between the doctor blades (80) decrease in the running direction of the reinforcing filaments (100) to form an opening at one end facing the extrusion die (703) allowing the molten plastic sheets (200) to run obliquely relative to the running direction of the reinforcing filaments (100) into the intervals between the doctor blades (80).

4. The apparatus for forming a vertical roll-press reinforced tape according to claim 1, wherein, The side of the doctor blades (80) facing the molten plastic sheets (200) is formed with an arc surface portion (80a) and a flat surface portion (80b) in sequence contacting the molten plastic sheets (200), the flat surface portion (80b) being parallel to the arrangement plane of the reinforcing filaments (100).

5. The apparatus for vertical roll forming of a reinforcing belt according to claim 4, wherein, At least one of the doctor blades (80) is formed with a protrusion (80c) extending towards another doctor blade (80) at both sides parallel to the arrangement direction of the reinforcing filaments (100) to press the edges of the molten plastic sheets (200) by the protrusion (80c) when the reinforcing filaments (100) and the molten plastic sheets (200) pass through the intervals between the doctor blades (80).

6. The apparatus for forming a vertical roll-press reinforced tape according to claim 1, wherein, The interval of the doctor blades (80) at the position of the protrusion (80c) is 0.5-10 mm.

7. The apparatus for vertical roll forming of a reinforcing belt of claim 1 wherein, The side of the doctor blades (80) facing the molten plastic sheets (200) is formed as a polished surface or coated with an anti-sticking coating, or the doctor blades (80) comprise a doctor blade base (80d) and an anti-sticking plate (80e) connected to the side of the doctor blade base (80d) facing the molten plastic sheets (200). The doctor blade assembly further comprises a doctor blade interval adjusting mechanism (81) for adjusting the size of the intervals between the doctor blades (80).

8. The apparatus for vertical roll forming of a reinforcing belt of claim 1 wherein, The equipment for vertical roll forming reinforced belt comprises a plurality of groups of roll composite roller groups (67b, 67c) arranged along the running direction of the reinforcing filaments (100), wherein the roll gap formed by the roll composite roller groups (67b, 67c) located above is equal to or greater than the roll gap formed by the roll composite roller groups (67b, 67c) located below, and a wind cooling device (69) is arranged between the first group of roll composite roller groups (67b, 67c) and the blade assembly and / or between adjacent roll composite roller groups (67b, 67c), which is arranged on the two sides of the reinforcing belt (300) opposite to the belt surface.

9. The apparatus for forming a vertical roll-press reinforced tape according to claim 1, wherein, The rollers (671) arranged in pairs are arranged horizontally spaced from each other, and the respective roller shafts extend in the horizontal direction, respectively, and the reinforcing filaments (100) vertically enter the roll gap downward.

10. A reinforced tape production line characterized by, The equipment for vertical roll forming reinforced belt comprises a plurality of groups of roll composite roller groups (67b, 67c) arranged along the running direction of the reinforcing filaments (100), wherein the roll gap formed by the roll composite roller groups (67b, 67c) located above is equal to or greater than the roll gap formed by the roll composite roller groups (67b, 67c) located below, and a wind cooling device (69) is arranged between the first group of roll composite roller groups (67b, 67c) and the blade assembly and / or between adjacent roll composite roller groups (67b, 67c), which is arranged on the two sides of the reinforcing belt (300) opposite to the belt surface.

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