CN105291444B - The plastic honeycomb board continuous producing method and equipment of synergy are rolled based on plastic uptake - Google Patents

Abstract

The present invention discloses a kind of plastic honeycomb board continuous producing method and equipment that synergy is rolled based on plastic uptake, and its method is first to be molded hollow parison using die head；Then using the cooperation of vacuum forming roller and smooth shaping roller with honeycomb, a face formed honeycomb structure, the bottom hot pressing fusion of another side and honeycomb；Through Hot-blast Heating and carry out secondary sizing again.Its equipment includes die head, shunting knife, air cushion plug, vacuum forming roller, smooth shaping roller, hot blast knife and secondary sizing roller group, vacuum forming roller and smooth shaping roller are arranged side by side to form one-shot forming roller group, knife is shunted in die head, shunting knife both sides are respectively runner, and air cushion plug is below shunting knife and inside extruded parisons；According to the conveying direction of material, die head, one-shot forming roller group, hot blast knife and secondary sizing roller group are set gradually.The present invention can quickly one-shot forming plastic honeycomb board, and can effectively overcome the not enough defect of existing plastic honeycomb board bearing capacity.

Description

Method and equipment for continuous production of plastic honeycomb panels based on synergistic effect of blister rolling

technical field

The invention relates to the technical field of polymer material molding and processing, in particular to a method and equipment for continuous production of plastic honeycomb panels based on the synergistic effect of blister rolling and pressing.

Background technique

Plastic sheet is a sheet made of plastic. It is widely used in construction and chemical industries. It is wear-resistant, vibration-resistant, corrosion-resistant, recyclable, high-strength, anti-aging, waterproof, Moisture-proof, not easy to deform, reusable, etc., and the replaced hard plastic pallet can also be recycled and processed, which greatly reduces the cost. A plastic sheet is a structure formed by two substantially parallel face sheets and a core arranged between them, usually also a sheet-like material, but arranged in a direction different from that of the face sheets. At present, the plastic sheets produced by extrusion mainly include solid sheets, foamed sheets, vacuum lattice panels, and honeycomb sandwich composite panels. Among them, the honeycomb sandwich composite panel is made of plastic, modeled on the honeycomb structure built by bees, that is, the core material is folded in a honeycomb shape. The honeycomb panel structure can provide such a structure with light weight and high strength, which can resist bending better than the homogeneous panel structure, so it can be used as the main preferred substitute for wood materials, EPS foam plastics, etc., and gradually reduce EPS White pollution caused by foam; in addition, the honeycomb sandwich core can effectively reduce the weight of the board, save costs, and improve the effective utilization of resources. In view of its many advantages, it will surely become one of the preferred materials in various industries in the 21st century, with huge market potential. However, the traditional production method of plastic honeycomb core composite panels is to use multiple extruders to form panels and honeycomb core materials respectively, and finally to bond the panels and honeycomb cores by thermal fusion to form honeycomb composite panels. The problem is that it is difficult to fix the honeycomb core and matrix with the panel; in addition, this method has defects such as low production efficiency and the comprehensive performance of the plate cannot meet the requirements, which limits the use of plastic composite panels. Therefore, it is extremely important to design a method for continuous production of plastic honeycomb panels with reliable performance and to expand the application field of honeycomb panels for saving resources and protecting the environment.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a continuous production method for plastic honeycomb panels based on the synergistic effect of blister rolling. The existing plastic honeycomb panel has the defect of insufficient bearing capacity.

Another object of the present invention is to provide a continuous production equipment for plastic honeycomb panels based on the synergistic effect of blister rolling and pressing for realizing the above method.

The technical scheme of the present invention is: a continuous production method of plastic honeycomb panels based on the synergistic effect of blister rolling, using a die head to form a hollow parison with a rectangular cross section; then using a vacuum forming roller with a honeycomb structure and a smooth With the cooperation of the forming roller, the side of the hollow parison in contact with the vacuum forming roller is vacuum-absorbed to form a honeycomb structure, and the side of the hollow parison in contact with the smooth forming roller is squeezed and fused with the bottom layer of the honeycomb structure; After being heated by hot air, secondary shaping is carried out to form a continuous honeycomb sandwich composite panel.

Wherein, the honeycomb structure is in the form of a vacuum hexagonal prism array.

During the secondary shaping, the shaping roller group with smooth surface is used for the secondary shaping, and under the synergistic effect of the rolling of the shaping roller group and the balanced air pressure in the honeycomb structure, the honeycomb structure expands outwards, stacks and fits each other, and finally forms Honeycomb sandwich composite panel.

The present invention is a continuous production equipment for plastic honeycomb panels based on the synergistic effect of blister rolling, comprising a die head, a diverter knife, an air cushion plug, a vacuum forming roller with a honeycomb structure, a smooth forming roller, a hot air knife and a secondary shaping roller In which, the vacuum forming roller and the smooth forming roller are arranged side by side to form a primary forming roller group. The diverter knife is set in the die head. Inside the billet; according to the conveying direction of the material, the die head, the primary forming roller group, the hot air knife and the secondary forming roller group are arranged in sequence.

An air passage is also provided in the die head, and the air passage communicates with the air hole in the air cushion plug. The balanced air pressure in the air-cushion plug makes the polymer melt stay on the periphery of the air-cushion plug without adhesion, ensuring the formation of a hollow parison with a rectangular extrusion cross-section.

The die head is connected with the extruder through a die head transition sleeve.

A gap adjustment device for adjusting the width of the runner is provided on the outside of the die head. Adjust the position of the diverter knife in the die head through the gap adjustment device, thereby adjusting the width of the runners on both sides. The gap adjustment device can use adjusting screws, which are respectively installed on the side walls of the mold located on the two outer sides of the splitting knife, and the position of the splitting knife is controlled by adjusting the length of the adjusting screw extending into the die head.

A cooling roller is also provided below the vacuum forming roller, and the vacuum forming roller, the smooth forming roller and the cooling roller are arranged in a triangle. Among them, the surface of the vacuum forming roller has a honeycomb structure, and the honeycomb structure is formed on one side of the hollow parison through plastic suction; the surfaces of the smooth forming roller and the cooling roller are both smooth surfaces, and the hollow parison and the smooth forming roller The contacting side is extruded and fused with the bottom layer of the honeycomb structure, and then shaped by cooling rollers to initially form a plastic honeycomb composite panel. The honeycomb structure on the surface of the vacuum forming roller is in the form of a vacuum hexagonal prism array. According to the actual needs of the plastic honeycomb composite panel, the respective density of the vacuum hexagonal prisms can be adjusted accordingly.

The secondary shaping roller set includes an upper shaping roller and a lower shaping roller arranged longitudinally, and the gap between the upper shaping roller and the lower shaping roller is smaller than the thickness of the honeycomb structure formed at the primary shaping roller set. Under the synergistic effect of the rolling of the shaping roller group and the balanced air pressure in the honeycomb structure, the honeycomb structure expands outwards, stacks and fits each other, and finally forms a honeycomb sandwich composite panel.

Compared with the prior art, the present invention has the following beneficial effects:

The invention can realize one-time continuous molding of the plastic honeycomb sandwich composite board, has high production efficiency, and the honeycomb sandwich and the upper panel are integral structures, so that the composite board has high bearing capacity; during the production process of the honeycomb plastic composite board There is no need for multiple extruders, and it has the characteristics of low cost and small volume. Experiments have proved that the honeycomb panels produced by this equipment are lighter than similar products made of metal plates, and have high service strength. In addition, the plastic honeycomb composite panels do not contain other additives such as adhesives, and can be 100% recycled. Recycled material.

Description of drawings

Fig. 1 is a structural schematic diagram of the continuous production equipment of the plastic honeycomb panel.

Fig. 2 is a schematic structural view of the vacuum forming roller in Fig. 1 .

Fig. 3 is a structural schematic diagram of the molded plastic honeycomb composite panel.

Fig. 4 is another schematic diagram of the formed plastic honeycomb composite panel.

detailed description

The present invention will be further described in detail below with reference to the examples, but the embodiments of the present invention are not limited thereto.

Example 1

In this embodiment, a method for continuous production of plastic honeycomb panels based on the synergistic effect of blister rolling, as shown in Figure 1, utilizes a die head to form a hollow parison whose section shape is rectangular;

Then, using the cooperation of the vacuum forming roller with a honeycomb structure and the smooth forming roller, the side of the hollow parison in contact with the vacuum forming roller is vacuum-absorbed to form a honeycomb structure, and the side of the hollow parison in contact with the smooth forming roller is squeezed After pressing, it is hot-pressed and fused with the bottom layer of the honeycomb structure;

After being heated by hot air, the smooth-surfaced shaping rollers are used for secondary shaping. Under the synergistic effect of the rolling of the shaping rollers and the balanced air pressure in the honeycomb structure, the honeycomb structure expands outwards, stacks and fits each other, and finally forms a continuous shape. Honeycomb sandwich composite panels.

Wherein, the honeycomb structure is in the form of a vacuum hexagonal prism array (as shown in FIG. 3 or FIG. 4 ).

Example 2

In this embodiment, a continuous production equipment for plastic honeycomb panels based on the synergistic effect of blister rolling for realizing the method described in Embodiment 1, as shown in Figure 1, includes a die head 2, a splitter knife 7, an air cushion plug 5, and Honeycomb structure vacuum forming roller 15 (its structure is shown in Figure 2), smooth forming roller 14, hot air knife 8 and secondary setting roller group 9, wherein, vacuum forming roller and smooth forming roller are arranged side by side to form a The forming roller set, the diverter knife is set in the die head, the two sides of the diverter knife are flow channels, the air cushion plug is set under the diverter knife and inside the extruded parison; according to the conveying direction of the material, the die head, the primary forming roller group, The hot air knife and the secondary setting roller group are arranged in sequence. An air channel 4 is also provided in the die head, and the air channel communicates with the air hole in the air cushion plug. The balanced air pressure in the air-cushion plug makes the polymer melt stay on the periphery of the air-cushion plug without adhesion, ensuring the formation of a hollow parison with a rectangular extrusion cross-section. The die head is connected with the extruder 16 through the die head transition sleeve 1 . A gap adjustment device 3 for adjusting the width of the runner is provided on the outside of the die head. Adjust the position of the diverter knife in the die head through the gap adjustment device, thereby adjusting the width of the runners on both sides. The gap adjustment device can use adjusting screws, which are respectively installed on the side walls of the mold located on the two outer sides of the splitting knife, and the position of the splitting knife is controlled by adjusting the length of the adjusting screw extending into the die head. A cooling roller 13 is also arranged below the vacuum forming roller, and the vacuum forming roller, the smooth forming roller and the cooling roller are arranged in a triangle. Among them, the surface of the vacuum forming roller has a honeycomb structure, and the honeycomb structure is formed on one side of the hollow parison through plastic suction; the surfaces of the smooth forming roller and the cooling roller are both smooth surfaces, and the hollow parison and the smooth forming roller The contacting side is extruded and fused with the bottom layer of the honeycomb structure, and then shaped by cooling rollers to initially form a plastic honeycomb composite panel. The honeycomb structure on the surface of the vacuum forming roller is in the form of a vacuum hexagonal prism array. According to the actual needs of the plastic honeycomb composite panel, the respective density of the vacuum hexagonal prisms can be adjusted accordingly. The secondary shaping roller set includes an upper shaping roller and a lower shaping roller arranged longitudinally, and the gap between the upper shaping roller and the lower shaping roller is smaller than the thickness of the honeycomb structure formed at the primary shaping roller set. Under the synergistic effect of the rolling of the shaping roller group and the balanced air pressure in the honeycomb structure, the honeycomb structure expands outwards, stacks and fits each other, and finally forms a honeycomb sandwich composite panel.

When the above equipment is applied, the principle is: after the plastic is plasticized and melted by the extruder 16, it enters the die head 2 through the die head transition sleeve 1, and is divided into two streams by the diverter knife 7, and simultaneously flows into the air passage in the die head 2. Compressed air is introduced into 4, and the extruded melt forms a hollow parison 6 with a rectangular cross-sectional shape under the action of the balanced air pressure in the air cushion plug. The thickness of the parison can be controlled by a gap adjustment device. As the hollow parison enters the vacuum The junction between the forming roller 15 and the smooth forming roller 14, the vacuum forming roller 15 and the smooth forming roller 14 rotate synchronously, adjust and lock the two rollers, the hollow parison in contact with the vacuum forming roller 15 The vacuum hexagonal prism array 12 corresponding to the honeycomb structure is formed under the suction action of the vacuum forming roller 15, and at the same time, under the extrusion action of the smooth forming roller 14, the bottom surface of the vacuum hexagonal prism array is in contact with the smooth auxiliary forming roller. One side is hot-pressed and fused, and then the cooling roller 13 arranged in the longitudinal direction is cooled and shaped and rolled off, and then the hexagonal prism array 12 is in a high elastic state under the action of the second heating of the hot air knife 8, and then rolled by the secondary forming roller group. The hexagonal prism 12 expands outward under the restriction of the pressure and the equilibrium air pressure inside the hexagonal prism 12, stacks and fits each other, and finally forms the plastic honeycomb composite panel 10.

As mentioned above, the present invention can be better realized. The above-mentioned embodiment is only a preferred embodiment of the present invention, and is not used to limit the scope of the present invention; Covered by the scope of protection required by the claims of the present invention.

Claims (8)

1. the plastic honeycomb board continuous producing method of synergy is rolled based on plastic uptake, it is characterised in that be first molded using die head Cross sectional shape is the hollow parison of rectangle, is specially：After the extruded machine plastifying fusion of plastics, enter die head through die head transition sleeve, It is split knife and is divided into two stock material streams, while toward the melt being passed through after compressed air, extrusion in the air flue in die head in air cushion plug The lower Formation cross-section of equilibrium air pressure effect is shaped as the hollow parison of rectangle；

Then the cooperation of vacuum forming roller and smooth shaping roller with honeycomb, hollow parison and vacuum forming are utilized The one side of roller contact forms honeycomb by vacuum forming, after hollow parison is squeezed with the one side that smooth shaping roller is contacted Bottom hot pressing with honeycomb is fused；Again after Hot-blast Heating, secondary sizing is carried out, continuous cellular-core is formed and is combined Plate.

2. rolling the plastic honeycomb board continuous producing method of synergy based on plastic uptake according to claim 1, its feature exists In the honeycomb is the structure type in the array of prisms of vacuum six.

3. rolling the plastic honeycomb board continuous producing method of synergy based on plastic uptake according to claim 1, its feature exists In, during the secondary sizing, using the secondary sizing of sizing roller group progress that surface is smooth, rolling and honeycomb using roller group of shaping Under the synergy of structure inner equilibrium air pressure, honeycomb is dilated outward, and laminating is piled up each other, is ultimately formed cellular-core and is answered Plywood.

4. the plastic honeycomb board continuous producing apparatus of synergy is rolled based on plastic uptake, it is characterised in that including die head, shunting Knife, air cushion plug, the vacuum forming roller with honeycomb, smooth shaping roller, hot blast knife and secondary sizing roller group, wherein, Vacuum forming roller and smooth shaping roller are arranged side by side to form one-shot forming roller group, and shunting knife shunts knife two in die head Side is respectively runner, and air cushion plug is below shunting knife and inside extruded parisons；According to the conveying direction of material, die head, One-shot forming roller group, hot blast knife and secondary sizing roller group are set gradually；Air flue, air flue and the gas in air cushion plug are additionally provided with die head Hole is connected.

5. rolling the plastic honeycomb board continuous producing apparatus of synergy based on plastic uptake according to claim 4, its feature exists In the die head is connected by die head transition sleeve with extruder.

6. rolling the plastic honeycomb board continuous producing apparatus of synergy based on plastic uptake according to claim 4, its feature exists In provided with the slack adjuster for being used to adjust width of flow path on the outside of the die head.

7. rolling the plastic honeycomb board continuous producing apparatus of synergy based on plastic uptake according to claim 4, its feature exists In the vacuum forming roller lower section is additionally provided with cooling roller, and vacuum forming roller, smooth shaping roller and cooling roller are in three Angular arrangement.

8. rolling the plastic honeycomb board continuous producing apparatus of synergy based on plastic uptake according to claim 4, its feature exists In the secondary sizing roller group is included in the upper shaping roller tube and lower shaping roller tube being longitudinally arranged, upper shaping roller tube and lower sizing Gap between roller is less than the honeycomb thickness formed at one-shot forming roller group.