CN104960308A - Device for producing laminated composite sheet material - Google Patents

Abstract

The invention discloses a device for producing laminated composite plates, mainly composed of extrusion feeding equipment, confluence, laminator, butt joint and continuous flat press, extrusion feeding equipment, confluence, lamination unit, butt joint It is connected in series with the continuous flat press in sequence; the continuous flat press is mainly composed of driven rollers, driven roller brackets, steel belts, upper fixing plates, hydraulic cylinders, upper heat shields, upper hot pressing plates, lower hot pressing plates, lower partitions Hot plate, lower fixed plate in hot press area, frame, frame support, I-beam base, upper cooling plate, lower cooling plate, lower fixed plate in cooling area, driving roller, driving roller bracket, driver, heating plate heater , pressure roller and driven roller heater, etc., and electromagnetic induction heaters are installed in the heating channel of driven roller and hot platen. The production line of the present invention provides a high-efficiency and energy-saving preparation device for the production of thermoplastic-based laminated composite plates due to the high-efficiency lamination device, the integrated continuous flat press and the high conversion rate electromagnetic induction heating method.

Description

A device for producing laminated composite panels

technical field

The invention belongs to the field of processing and forming of polymer composite materials, and relates to a device for producing a thermoplastic-based composite plate with a layered structure, in particular to obtain a new type of laminate efficiently by means of the preparation technology of laminated composite materials and a continuous flat press Composite panels.

Background technique

Polymer composite materials play a very important role in the development of modern science and technology. They are widely used in the aerospace field and the automobile industry. They partially replace steel and reduce the weight of the machine, thereby achieving energy saving and emission reduction; in the construction field, wood-plastic panels replace traditional Natural wood meets people's aesthetic needs for wood while saving resources. At present, the molding methods that have been applied in the production of thermoplastic-based composite materials include extrusion molding, injection molding, and compression molding. Extrusion molding is already a relatively mature process, and the composite method is often blending. Due to the agglomeration of fillers, the uniformity of filling is reduced, and the product strength is low; injection molding and compression molding are intermittent working methods, especially compression molding. The molding cycle is long and the production efficiency is low.

Contents of the invention

The purpose of the present invention is to address the shortcomings of existing thermoplastic-based composite board extrusion molding and compression molding, and propose a method for efficiently producing laminated composite boards. The preparation device is mainly composed of extrusion feeding equipment, confluence, laminator, It is composed of a butt joint and a continuous flat press. Among them, the laminator doubles the melt layer and makes the distribution of the dispersed phase in the melt more uniform, which improves the strength and toughness of the product; and the dispersed form of the two-dimensional layered structure greatly enhances the barrier performance of the matrix. The number of product layers obtained by lamination increases exponentially, and its molding efficiency is much higher than that of co-extrusion molding and compression molding. The continuous flat press further widens and thins the laminated sheet melt, and the continuous production of hot pressing, cooling and transportation improves the production efficiency. In addition, the heating part of the continuous flat press adopts electromagnetic induction to replace the commonly used hot oil, hot water or hot steam, which has high heat transfer efficiency and reduces production energy consumption.

To achieve the above object, the present invention adopts the following technical solutions:

A device for producing thermoplastic-based laminated composite boards, the device is composed of extrusion feeding equipment, confluence, laminator, butt joint and continuous flat press, extrusion feeding equipment, confluence, laminator, butt joint and Continuous flat presses are serially connected in series; n thermoplastic polymers or thermoplastic-based blend materials pass through n melt extrusion feeding equipment and confluences to form n layers of composite melts, n is greater than or equal to 1, and n equal to 1 is a single type For compounding of materials, the raw materials processed by n melting extrusion feeding equipment can be the same or different. If the raw materials are the same, it is also a compounding of a single material; When an equal part continues to flow forward in the stacker, it is rotated 90° and widened by m times, and the thickness is reduced to 1/m times. At the exit of the stacker, it is confluent into n×m layer exit melt, and the stacker inlet melt channel The size is the same as that of the outlet melt channel; after k identical laminators are connected in series, a laminated composite material of n×m ^k layers can be obtained; m is an integer not less than 2, and k is an integer not less than 1. The composite board extruded by the forming device has a multi-layer structure, and the thickness of the layer is controllable, which can realize the production of boards with various strength and performance requirements.

The laminated composite material melt of n×m ^k layers passing through the outlet of the laminator enters the inlet of the continuous flat press through the butt joint. The butt joint transfers the laminated composite material melt of n×m ^k layers to the size required by the continuous flat press, and has a section of stable shape; the continuous flat press is mainly composed of driven rollers, driven roller brackets, steel belts, upper Fixed plate, hydraulic cylinder, upper heat shield, upper hot plate, lower hot plate, lower heat shield, lower fixed plate in hot press zone, frame, frame support, I-beam base, upper cooling plate, lower The cooling plate, the fixed plate under the cooling zone, the driving roller, the driving roller bracket, the driver, the hot plate heater, the pressure roller and the driven roller heater are composed of the frame plate fixed on the I-beam base through the frame support, The upper fixed plate of the frame plate in the hot-pressing zone is successively installed with a hydraulic cylinder, a heat shield and an upper hot-pressing plate, and the lower hot-pressing plate is installed on the lower fixing plate of the hot-pressing zone, and the parts are connected by threads; It is installed in the matching groove at the bottom of the hot pressing plate, and the pressure rollers on the upper and lower hot pressing plates correspond one by one. The upper and lower steel belts are respectively wound on the driving roller and the driven roller, pass through the gap formed by the upper pressing plate and the lower pressing plate and contact the pressing rollers in the upper and lower pressing plates respectively, and the pressing rollers roll on the steel belt; the driving roller is formed by Driven by two DC motors, electromagnetic induction heaters are installed in the driven roller and the heating channel of the hot pressing plate. The device is composed of heat insulating sleeves, electromagnetic coils, magnetic cores, controllers and external circuits. When working, the electromagnetic coil connected with high-frequency alternating current generates magnetic force lines to generate eddy current on the inner surface of the heating channel, and the thermal effect of the eddy current makes the temperature of the driven roller or the hot platen rise rapidly, thereby heating the melt. Cooling channels are processed on the cooling plate, and cooling water is passed through to cool and shape the melt. Both the hot pressing plate and the cooling plate are wedge-shaped butted, fixed on the ejector rod of the hydraulic cylinder, and the working surface of the spliced pressing plate is a plane. When the press is working, the hydraulic cylinder provides the reaction force balance for the lateral pressure generated by the melt on the platen, and finally the frame bears the separation force.

The beneficial effects of the invention are: the lamination efficiency of the laminator is high, multiple same laminators are connected in series, and even hundreds of layers of composite boards can be obtained, and the mechanical properties and barrier properties are greatly enhanced. Under the premise of the same performance requirements, the thickness of laminated plates will be smaller, thus saving resources. The continuous flat press further calenders the exit melt of the laminator to meet the width requirements of the required sheet. The integrated design of heating, cooling, and conveying improves the production rate, thereby increasing production output and reducing manufacturing costs. Compared with resistance wire heating, the electromagnetic induction heating method adopted by the continuous flat press has the advantages of fast heating rate and high electrothermal conversion efficiency, which can reach more than 90%. Compared with traditional hot oil heating, electromagnetic induction heating is more harmful to the environment. The pollution is small, energy saving and environmental protection. The high-efficiency laminator, the integrated design of the continuous flat press and the high-conversion rate electromagnetic induction heating method provide a high-efficiency and energy-saving preparation device for the production of thermoplastic-based laminated composite plates.

Description of drawings

Fig. 1 is an appearance structure diagram of a device for efficiently producing thermoplastic-based laminated composite panels according to the present invention.

Fig. 2 is an assembly and connection diagram of a collector, a laminate, and a butt joint of a device for efficiently producing thermoplastic-based laminated composite boards according to the present invention.

Fig. 3 is a schematic diagram of the twisting of a section of the melt in the laminator of a device for efficiently producing thermoplastic-based laminated composite boards according to the present invention.

Fig. 4 is a schematic diagram of the principle of lamination in the laminator of a device for efficiently producing thermoplastic-based laminated composite boards according to the present invention.

Fig. 5 is an appearance structure diagram of a continuous flat press of a device for efficiently producing thermoplastic-based laminated composite boards according to the present invention.

Fig. 6 is a partial cross-sectional view of the hot-pressing zone of the continuous flat press of a device for efficiently producing thermoplastic-based laminated composite boards according to the present invention.

Fig. 7 is a partial cross-sectional view of a driven roller of a continuous flat press of a device for efficiently producing thermoplastic-based laminated composite boards according to the present invention.

Fig. 8 is a partial cross-sectional view of the cooling zone of the continuous flat press of a device for efficiently producing thermoplastic-based laminated composite panels according to the present invention.

In the figure: 1 extrusion feeding equipment, 2 confluence, 3 laminator, 4 butt joint, 5 continuous flat press, 3-1 laminator 1, 3-2 laminator 2, 5-1 driven roller, 5 -2 driven roller bracket, 5-3 upper steel belt, 5-4 lower steel belt, 5-5 upper fixed plate, 5-6 hydraulic cylinder, 5-7 upper heat shield, 5-8 upper hot pressing plate, 5-9 lower heat plate, 5-10 lower heat insulation board, 5-11 lower fixed plate in hot pressing area, 5-12 frame, 5-13 frame support, 5-14 I-beam base, 5-15 Upper cooling plate, 5-16 lower cooling plate, 5-17 lower fixed plate in cooling zone, 5-18 driving roller, 5-19 driving roller bracket, 5-20 driver, 5-21 hot plate heater, 5-21 -1 heat insulation sleeve 1, 5-21-2 magnetic core 1, 5-21-3 electromagnetic coil 1, 5-22 pressure roller, 5-23 driven roller heater, 5-23-1 heat insulation sleeve 2, 5-23-2 magnetic core two, 5-23-3 electromagnetic coil two.

Detailed ways

The invention relates to a device for efficiently producing thermoplastic-based laminated composite boards. The overall appearance is shown in Figure 1, including extrusion feeding equipment 1 composed of multiple extruders, confluence 2, laminator 3, docking device 4 and Continuous flat press 5. FIG. 2 is an enlarged view of the assembly and connection of the busbar 2 , the stacker 3 , and the docker 4 in FIG. 1 . Wherein, the stacker 3 is composed of a stacker 3-1 and a stacker 3-2 connected in series. A variety of thermoplastic polymers or thermoplastic-based blend materials are respectively added to multiple extruders for extrusion and feeding. After passing through the confluence 2, the melt presents n-layer melt A in Figure 4, and the melt in the confluence 2 When the n-layer melt leaves the confluence 2, it is equally divided into m equal parts along the width direction, and each equal part rotates 90 degrees and expands m times when it continues to flow forward in the stacking flow channel B of the laminator, and mutually Confluence becomes lamination melt C of n×m layers. FIG. 3 is a schematic diagram of a section of melt rotated by 90 degrees in the laminator 3 and widened. When k laminators are connected in series, the melt is rotated and widened in the k laminators, and finally a thermoplastic-based composite material with n×m ^k layers is obtained. The rotating and unfolding structure of the laminator 3 can easily reduce the agglomeration of the dispersed filling phase in the matrix melt material, thereby making the distribution of the dispersed phase in the matrix melt more uniform and greatly improving the mechanical properties. If the thickness of the inlet and outlet flow channels of the stacker 3 is too thin, it is not conducive to the arrangement of the inner flow channels of the stacker 3. The n×m ^k layer enters the docker 4, and the n×m ^k layer at the outlet of the stacker 3 is passed through the docker 4. The laminated composite material melt is stably compacted to the required thickness and then sent to the entrance of the continuous flat press 5 .

Continuous flat press mainly includes driven roller 5-1, driven roller bracket 5-2, upper steel belt 5-3, lower steel belt 5-4, upper fixed plate 5-5, hydraulic cylinder 5-6, upper partition Hot plate 5-7, upper hot pressing plate 5-8, lower hot pressing plate 5-9, lower insulation board 5-10, lower fixing plate 5-11 in hot pressing zone, frame 5-12, frame support 5- 13. I-beam base 5-14, upper cooling plate 5-15, lower cooling plate 5-16, lower fixed plate 5-17 in cooling zone, driving roller 5-18, driving roller bracket 5-19, driver 5- 20, hot platen heater 5-21, pressure roller 5-22 and driven roller heater 5-23, hot platen heater 5-21 includes heat insulation cover 5-21-1, magnetic core 5-21- 2 and the electromagnetic coil 5-21-3, the driven roller heater 5-23 comprises two heat-insulating sleeves 5-23-1, two magnetic cores 5-23-2, and two electromagnetic coils 5-23-3. The frame 5-12 is fixed on the I-beam base 5-14 through the frame support 5-13, and the upper fixing plate 5-5 of the frame plate in the hot pressing zone is sequentially installed with a hydraulic cylinder 5-6 and an upper heat shield 5-7. The upper hot pressing plate 5-8, the lower hot pressing plate 5-9 and the lower heat insulation plate 5-10 are installed on the lower fixing plate 5-11 in the hot pressing zone, and the parts are connected by threads. Pressure roller 5-22 is inserted in the groove that upper hot pressing plate 5-8 and lower hot pressing plate 5-9 bottom cooperate with it, and the pressure roller that upper hot pressing plate 5-8 and lower hot pressing plate 5-9 are housed The rollers 5-22 are in one-to-one correspondence. The upper steel strip 5-3 and the lower steel strip 5-4 are respectively wound on the driving roller 5-18 and the driven roller 5-1, pass through the gap between the upper and lower pressing plates and connect with the upper hot pressing plate 5-8 and the lower pressing plate respectively. The pressure roller 5-22 in the hot pressing plate 5-9 contacts, and the pressure roller 5-22 rolls on the upper steel strip 5-3 and the lower steel strip 5-4 surface respectively. The drive roll 5-18 is driven by a drive 5-20 equipped with two DC motors. As shown in Figure 6, a hot pressing plate heater 5-21 is housed in the heating channel of the hot pressing plate 5-8, 5-9, and the device consists of a heat insulating sleeve 5-21-1, a magnetic core 5-21-2 , Electromagnetic coil 5-21-3, controller and external circuit. When working, the electromagnetic coil 5-21-3 connected to high-frequency alternating current generates magnetic force lines to generate eddy currents on the inner surface of the heating channel, and the thermal effect of the eddy currents causes the temperature of the hot pressing plates 5-8 and 5-9 to rise rapidly. The pressure roller 5-22 in the hot platen 5-8, 5-9 heats up thereupon, transfers heat to the steel strip 5-3 and 5-4 respectively, thereby the melt is heated.

The driven roller 5-1 adopts the same heating method as the hot pressing plate 5-8, as shown in FIG. 7 . The purpose of the driven roller 5-1 heating is to preheat the upper steel strip 5-3 and the lower steel strip 5-4, so that the melt entering the continuous flat press 5 entrance remains molten, wherein the driven roller 5-1 There is a gap between the support of the work roll cylinder and the support column of the magnetic core two 5-23-2, the work roll cylinder of the driven roll 5-1 rotates, and the support column of the magnetic core two 5-23-2 is stationary, this This structure does not need a slip ring to connect electricity to the driven roller heater 5-23, and since the working roller cylinder of the driven roller 5-1 rotates relative to the supporting column of the magnetic core 2 5-23-2, the circumferential temperature more uniform.

As shown in Figure 8, cooling passages are processed on the upper and lower cooling plates 5-15 and 5-16, and cooling water is passed through to cool and shape the melt. . The hot pressing plates 5-8, 5-9 and the cooling plates 5-15, 5-16 all adopt wedge-shaped butt joints, and are fixed on the ejector rods of the hydraulic oil cylinders 5-6, and the pressing plate working surface formed by splicing is a plane. When the continuous flat press 5 is working, the lateral pressure produced by the melt on the pressing plate is balanced by the reaction force provided by the hydraulic cylinder 5-6, and finally the separation force is borne by the frame 5-12. The continuous flat press 5 further widens and thins the melt at the outlet of the laminator 3 to meet the width requirement of the required plate. The integrated design of heating, cooling, and conveying improves the production rate, thereby increasing production output and reducing manufacturing costs. The electromagnetic induction heating method adopted by the continuous flat press machine 5 has fast heating rate, high electrothermal conversion efficiency, less environmental pollution, energy saving and environmental protection. High-efficiency laminator 3, integrated design of continuous flat press 5 and its high-conversion heating plate heater 5-21, driven roller heater 5-23, provide the production of thermoplastic-based laminated composite boards A high-efficiency and energy-saving preparation method and device are provided.

Claims (3)

1. produce a device for laminated composite plate, it is characterized in that: primarily of extruding feeder apparatus, junction station, stacked device, docking adapter and continuous flat press composition, extruding feeder apparatus, junction station, stacked device, docking adapter and continuous flat press and connecting successively, n kind thermoplastic polymer or thermoplastic matrix's blend material form n layer compounding flux after n melt extrudes feeder apparatus and junction station, and n is not less than the integer of 2, compounding flux enter stacked device entrance in the width direction average mark be slit into m equal portions, half-twist when each equal portions continues flow forward in stacked device and broadening m are doubly, thickness reduces to 1/m doubly, conflux into the exit melt of n × m layer in the outlet of stacked device, stacked device entrance melt canal size is identical with exit melt channel size, after the stacked device that series connection k is identical, then obtain n × m ^kthe laminated composite material of layer, m be not less than 2 integer, k be not less than 1 integer, through n × m that stacked device exports ^kthe laminated composite material melt of layer enters continuous flat press entrance by docking adapter, docking adapter is by n × m ^kthe laminated composite material melt of layer is transitioned into the size of continuous flat press needs, and has one section of stable section of shaping, continuous flat press is primarily of driven voller, driven voller support, steel band, upper mounted plate, hydraulic jack, upper thermal insulation board, upper hot pressboard, lower hot pressing board, lower thermal insulation board, hot pressing district bottom plate, framework, frame supporter, I-steel pedestal, upper coldplate, lower coldplate, cooling zone bottom plate, drive roll, drive roll support, driver, heating platen heater, pressure roller and driven voller heater composition, frame plate is fixed on I-steel pedestal by frame supporter, the upper mounted plate of the frame plate in hot pressing district is provided with hydraulic jack successively, thermal insulation board and upper hot pressboard, lower hot pressing board is arranged on hot pressing district bottom plate, can adopt between each part and be threaded, pressure roller is inserted in the groove that heating platen bottom coordinates with it, the pressure roller one_to_one corresponding that upper hot pressboard, lower hot pressing board are equipped with, upper steel band, lower steel band are respectively around on drive roll and driven voller, and the gap formed through top board and lower platen also contacts with the pressure roller in top board, lower platen respectively, and pressure roller rolls on steel band, drive roll is by the driver drives of being furnished with two dc motors, and in driven voller and heating platen heat tunnel, electromagnetic induction heater is housed, electromagnetic induction heater is made up of collet, solenoid, magnetic core, controller and external circuit, coldplate is processed with cooling duct, passes into cooling water and cooling and shaping is carried out to melt, heating platen and coldplate are all fixed on the knock-pin of hydraulic jack, and the pressing plate working face be spliced is a plane.

2. a kind of device producing laminated composite plate according to claim 1, is characterized in that: heating platen and coldplate all adopt wedge shape to dock.

3. a kind of device producing laminated composite plate according to claim 1, it is characterized in that: the support column of the support of the working roll cylinder of driven voller and the magnetic core two of its electromagnetic induction heater has gap each other, the working roll cylinder of driven voller rotates, and the support column of magnetic core two is static.