Luminous floor, manufacturing mold and preparation method

Abstract

The present invention relates to an outdoor floor, in particular to a luminous floor, a manufacturing mold and a preparation method; belonging to the technical field of wood plastic floor. A luminous floor comprises a rigid core layer and a hard surface layer covering at least the upper surface of the core layer, the upper surface of the hard surface layer is provided with a receiving body having a receiving groove; and a luminous strip is also provided in the receiving groove. The present invention provides a receiving body having a receiving groove on the hard surface layer, and provides a luminous strip in the receiving body, so that the fluorescent material is concentrated in the receiving body; since the fluorescent material is not dispersed into the matrix of the floor, the mechanical strength of the entire floor is not affected, and since the fluorescent material is enriched together, only a small amount of fluorescent material is used to create a floor with sufficient fluorescent brightness. This floor not only has the effect of prompting pedestrians at night, but also has a night scene decoration effect due to the sufficient fluorescent brightness.

Description

Technical Field

[0001] The invention relates to an outdoor floor, in particular to a luminous floor, a manufacturing mould and a preparation method thereof, and belongs to the technical field of wood plastic floor. Background Art

[0002] The existing outdoor floors are all ordinary floors, and their outlines cannot be seen in the dark. Especially when used on stairs, it is easy to cause people to step on empty space and fall. In order to solve the above problems, people have proposed the concept of fluorescent floors.

[0003] Fluorescent floor refers to the floor that can emit light in the dark. Simply put, by mixing fluorescent substances into wood-plastic raw materials and using conventional wood-plastic extrusion process, fluorescent floor can be produced. Considering the influence of fluorescent substances on the floor and the influence of wood-plastic extrusion process on fluorescent substances, it is difficult to produce the fluorescent floor that people need with this simple process.

[0004] The invention patent with the authorization announcement number CN 104164082 B discloses a method for preparing a light-storage type luminescent wood plastic. The method comprises the following steps: (1) 10-30 parts of light-storage type luminescent pigment, 60-90 parts of PA6, 1-5 parts of oxidant, and 2-5 parts of anti-ultraviolet agent are mixed and granulated on a granulator to obtain a luminescent masterbatch; (2) the luminescent masterbatch prepared in step (1) is added to the side extruder in the co-extrusion extruder for extrusion operation to obtain the surface layer of the luminescent wood plastic, and the existing wood plastic pellets are added to the main extruder of the co-extrusion extruder for extrusion operation to obtain the bottom layer of the luminescent wood plastic. The invention forms a composite fluorescent floor by co-extrusion to form a surface layer with light-storage ability and a bottom layer formed by extrusion of ordinary wood plastic. The floor is a floor in which the fluorescent pigment is dispersed in the PA6 used to prepare the shell layer, and the fluorescent pigment will eventually be distributed on the entire surface of the floor. On the one hand, the addition of fluorescent pigments will affect the performance of the floor. On the other hand, fluorescent pigments have high dispersibility, and only fluorescent pigments with sufficient concentration can achieve better fluorescent effects. Therefore, large dispersibility requires a larger addition amount to achieve the desired fluorescent effect, and a larger addition amount will further affect the performance of the floor. Summary of the invention

[0005] The present invention aims to solve the above problems and thus provide a luminous floor.

[0006] The technical solution of the present invention to solve the above problems is as follows:

[0007] A luminous floor comprises a rigid core layer and a hard surface layer at least covering the upper surface of the core layer, wherein the upper surface of the hard surface layer is provided with a receiving body having a receiving groove; and a luminous strip is also provided in the receiving groove.

[0008] The present invention solves the above problem by forming a receiving body with a receiving groove on the surface of the hard surface layer, and then arranging the luminous strip in the receiving groove. The luminous strip contains a substance that can emit light in a dark environment, and this substance makes the luminous strip have luminous properties. The luminous strip can be plugged or snapped into the receiving groove, or it can be integrally formed with the luminous floor.

[0009] In the above technical solution of the present invention, on the one hand, the luminous strip and the floor are actually independent of each other, and the fluorescent material contained in the luminous strip will not affect the physical properties of the floor; on the other hand, the fluorescent material is concentrated in the luminous strip, and due to the concentration, only a small amount of fluorescent material is needed to achieve a good luminous effect. Different from the prior art, the fluorescent floor of the prior art emits fluorescence at night from the surface of the entire floor, and the luminous area is large, but the light is weak, and it only has a prompting effect, and it is difficult to play a role in night scene decoration. The luminous floor of the present invention, although the luminous area is small and strip-shaped, has high fluorescent brightness, which can not only prompt pedestrians, but also play a role in night scene decoration.

[0010] As a preferred embodiment of the above technical solution, the accommodating groove is arranged parallel to the length direction of the floor.

[0011] As a preferred embodiment of the above technical solution, the housing is centrally arranged.

[0012] As a preferred embodiment of the above technical solution, the housing has one or more components.

[0013] As a preferred embodiment of the above technical solution, the accommodating groove includes a groove bottom and left and right groove walls; the upper end surfaces of the left and right groove walls are respectively integrally connected to the hard surface layers on the left and right sides of the accommodating groove, and the lower end surfaces are respectively integrally connected to the two ends of the groove bottom; a groove is formed between the two upper end surfaces of the left and right groove walls, and the width of the groove is smaller than the groove bottom, so that the accommodating groove forms a shrinkage structure.

[0014] As a preferred embodiment of the above technical solution, the left and right groove walls and the groove bottom form an angle α, 30°<α<85°.

[0015] As a preferred embodiment of the above technical solution, a matching groove is formed on the upper surface of the rigid core layer at a position corresponding to the accommodating body, and the accommodating body is arranged in the matching groove.

[0016] As a preferred embodiment of the above technical solution, the matching groove is a flat groove or a dovetail groove.

[0017] As a preferred embodiment of the above technical solution, the material of the core layer is polyolefin wood plastic or rigid foamed PVC; the material of the surface layer is selected from one of ASA, PMMA, PA, PP, HDPE and PC.

[0018] Another object of the present invention is to provide a mold for preparing the above-mentioned luminous floor.

[0019] A mold for preparing the above-mentioned floor, which is formed by connecting a plurality of mold plates including a first mold discharge plate, a second mold discharge plate, a plurality of flow channel forming plates and a mold feed plate;

[0020] The mold is provided with a core layer preparation component including a main flow channel, a surface layer preparation component including a co-extrusion flow channel, and a luminous strip preparation component including a fluorescent flow channel; the surface layer preparation component is arranged between the core layer preparation component and the luminous strip preparation component;

[0021] The co-extrusion runner includes a first side inlet, an upper co-extrusion runner, a flow guide section, a lower co-extrusion runner and a co-extrusion runner outlet which are connected in sequence; the lower co-extrusion runner gradually approaches the main runner along the discharge direction and is connected with the main runner at the co-extrusion runner outlet; the co-extrusion runner outlet is arranged at the main runner outlet and covers at least the upper surface of the main runner outlet;

[0022] The fluorescent flow channel comprises a second side inlet, an upper fluorescent flow channel, a lower fluorescent flow channel and a fluorescent flow channel outlet connected in sequence; the lower fluorescent flow channel is connected to the mixing flow channel at the fluorescent flow channel outlet; the mixing flow channel is a mixing channel formed by extending the main flow channel and the co-extrusion flow channel in the discharge direction; the fluorescent flow channel outlet is arranged at the outlet of the mixing flow channel;

[0023] The multiple flow channel forming plates, according to the direction from the first mold discharge plate to the mold feed plate, at least include a first flow channel forming plate, a second flow channel forming plate and a third flow channel forming plate which are connected in sequence; the third flow channel forming plate is directly connected to the mold feed plate or is connected through other flow channel forming plates; the first flow channel forming plate is provided with a first protrusion corresponding to the matching groove; the first protrusion gradually becomes larger along the discharge direction; the second mold discharge plate is provided with a second protrusion corresponding to the accommodating body; the second protrusion gradually becomes larger along the discharge direction; the setting position of the second protrusion corresponds to the first protrusion, the setting position of the fluorescent flow channel outlet corresponds to the second protrusion, and according to the discharge direction, the fluorescent flow channel outlet is set in front of the second protrusion.

[0024] The molds of the present invention are divided into three types. One is suitable for manufacturing solid non-foamed floors, such as the core material of the floor is PE wood plastic, and the surface material is ASA; one is suitable for manufacturing hollow non-foamed floors, such as the material of the floor is the same as the former, the difference is that it has a hollow structure, and the difference in the manufacturing method of the two floors is only that the latter is provided with a core rod in the mold, and the core rod extends out of the mold outlet; the other is a solid foamed floor, such as the core layer of the floor is hard foamed PVC, and the surface layer is ASA. This floor is different from the solid non-foamed floor in mold design, mainly in that the rear half of the main channel is designed as a foaming cavity, and preferably a flow-blocking core rod is provided inside the main channel. In addition, the manufacture of hollow foamed floors is usually not considered, not only is the mold making more troublesome, but also the hollow foamed floor may have hidden dangers in the product structure.

[0025] The mold design of the present invention has three main focuses: first, how to form a matching groove on the core layer; second, how to form a surface layer with a container; and third, how to fill the fluorescent material into the container groove of the container. The first problem is the simplest, and only requires a gradually enlarged protrusion to be designed at the outlet of the main channel. Then, the formed core layer material will form a groove corresponding to the protrusion after being extruded; the second problem is more complicated, and a surface layer must be formed on the surface of the core layer. If the core layer is a regular rectangle, it is easy to handle. In this application, since the core layer forms a groove, the surface layer material cannot fill the groove, but must be filled according to the shape of the groove, and the groove must still be present after filling. The inventor first thought of designing the outlet of the co-extrusion flow channel into the shape required by the surface layer. In practice, it was found that such a treatment was very difficult in the flow channel molding of the mold, that is, to make the co-extrusion flow channel transition from a ring shape to the above-mentioned special shape, which is very difficult in mold processing; finally, the inventor added a second mold discharge plate, designed a second protrusion on the second mold discharge plate, and made the surface of the second protrusion transitionally connected with the outlet of the co-extrusion flow channel, while the outlet of the co-extrusion flow channel was still designed as a conventional rectangle; the third problem is also very complicated. It is not as simple as filling the fluorescent material into the receiving groove as seen on the surface. During the production process, when the floor is extruded, this receiving groove is movable relative to the mold, and this movable receiving groove is the real mold of the fluorescent material. In fact, the problem becomes to extrude the material from a mold that moves forward at a uniform speed; this requires the fluorescent material to have a faster extrusion speed. Therefore, in this application, the aperture of the upper fluorescent flow channel is larger than the aperture of the lower fluorescent flow channel, and the lower fluorescent flow channel is designed vertically; this flow channel design can make the fluorescent material have a higher discharge rate.

[0026] As a preferred embodiment of the above technical solution, the lower fluorescent flow channel is formed by connecting the first mold discharge plate and the second mold discharge plate.

[0027] As a preferred embodiment of the above technical solution, the main flow channel includes a front section with a relatively small aperture and a rear section with a relatively large aperture; a flow-blocking core rod is provided in the main flow channel.

[0028] As a preferred embodiment of the above technical solution, the choke core rod is disposed at a position corresponding to at least the rear half of the front section and the front half of the rear section.

[0029] As a preferred embodiment of the above technical solution, the flow-blocking core rod occupies at least 50% of the cross-sectional area of ​​the front section; and at least 30% of the cross-sectional area of ​​the rear section.

[0030] As a preferred embodiment of the above technical solution, the upper co-extruded flow channel is divided into two branch pipes, and is connected to the lower co-extruded flow channel through the same flow guide section. The lower co-extruded flow channel is a gradually shrinking annular channel; and the co-extruded flow channel outlet surrounds the main flow channel outlet.

[0031] As a preferred embodiment of the above technical solution, the guide area is two inclined spaces which are gradually flattened and interconnected; a buffer groove is provided at the junction of the guide area and the lower co-extrusion flow channel.

[0032] Another object of the present invention is to provide a method for preparing the above-mentioned floor.

[0033] The method for preparing the luminous floor, using the above-mentioned equipment, specifically comprises the following steps:

[0034] 1) The material constituting the rigid core layer of the floor is melted and plasticized by the extruder and squeezed into the main channel entrance, and then extruded at the main channel exit to obtain a core layer board with matching grooves;

[0035] 2) The material constituting the hard surface layer of the floor is melted and plasticized and extruded from the second extruder through the first side inlet, and then extruded from the outlet of the co-extrusion flow channel to obtain a slab with a containing body and a core layer material covered by the surface layer material;

[0036] 3) The material constituting the luminous floor strip is melted and plasticized by the third extruder and then extruded from the outlet of the mixing channel to obtain the luminous floor as described above.

[0037] In summary, the present invention has the following beneficial effects:

[0038] 1. The present invention provides a container with a container groove on a hard surface layer, and arranges a luminous strip in the container, so that the fluorescent material is concentrated in the container; since the fluorescent material is not dispersed into the matrix of the floor, it does not affect the mechanical strength of the entire floor; and since the fluorescent material is concentrated together, only a small amount of fluorescent material is used to create a floor with sufficient fluorescent brightness. This floor not only has the effect of reminding pedestrians at night, but also has a night scene decoration effect due to the sufficient fluorescent brightness.

[0039] 2. The present invention uses a dovetail groove design to composite the luminous strip on the floor, which has a good bonding effect;

[0040] 3. The present invention uses a newly designed mold to manufacture the above-mentioned luminous floor, which has the advantages of good formability and high production efficiency;

[0041] 4. The present invention solves the manufacturing problem of the above-mentioned luminous floor through mold design, and the mold of the present invention has the advantages of ingenious structural design, smooth flow channel discharge and good formability. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of the product structure of the first embodiment of the present invention;

[0043] Figure 2 1 is an overall schematic diagram of the mold structure of the first embodiment of the present invention;

[0044] Figure 3 yes Figure 2 Middle BB section view;

[0045] Figure 4 yes Figure 2 C1-C1 section view;

[0046] Figure 5 yes Figure 2 C2-C2 section view;

[0047] Figure 6 yes Figure 2 C3-C3 section view;

[0048] Figure 7 yes Figure 2 Middle DD section view;

[0049] Figure 8 It is a schematic diagram of the product structure of the second embodiment of the present invention;

[0050] Fig. 9 is an overall schematic diagram of the mold structure of the second embodiment of the present invention;

[0051] Fig.10 It is a schematic diagram of the product structure of the third embodiment of the present invention;

[0052] In the figure, 1-rigid core layer, 2-hard surface layer, 3-luminous strip; 11-matching groove, 21-accommodating body;

[0053] 10-main channel, 20-blocking mandrel, S1-coextrusion channel, S2-fluorescent channel, S3-mixing channel;

[0054] 10-1-front section of the main channel, 10-2-rear section of the main channel, 10-3-exit of the main channel;

[0055] S1-1-first side inlet, S1-2-upper co-extrusion channel, S1-3-flow guide area, S1-4-lower co-extrusion channel, S1-5-co-extrusion channel outlet, 34-buffer groove; S2-1-second side inlet, S2-2-upper fluorescent channel, S2-3-lower fluorescent channel, S2-4-fluorescent channel outlet; C11-first protrusion, B21-second protrusion;

[0056] A-first mold discharge plate, B-second mold discharge plate, C-first flow channel forming plate, D-second flow channel forming plate, E-third flow channel forming plate, F-fourth flow channel forming plate, G-fifth flow channel forming plate, H-mold feed plate. DETAILED DESCRIPTION

[0057] The present invention is further explained below in conjunction with the accompanying drawings.

[0058] This specific implementation is only an explanation of the present invention, not a limitation of the present invention. Any changes made by those skilled in the art after reading the specification of the present invention will be protected by the patent law as long as they are within the scope of the claims.

[0059] Embodiment 1

[0060] A luminous floor, such as Figure 1 As shown, the luminous floor has a rigid core layer 1 and a hard surface layer 2 covering the rigid core layer 1. A receiving body 21 with a receiving groove is formed on the upper surface of the hard surface layer 2; and a luminous strip 3 is also provided in the receiving groove. The receiving groove is arranged parallel to the length direction of the floor. The receiving groove includes a groove bottom and left and right groove walls; the upper end surfaces of the left and right groove walls are respectively integrally connected to the hard surface layers on the left and right sides of the receiving groove, and the lower end surfaces are respectively integrally connected to the two ends of the groove bottom; a notch is formed between the two upper end surfaces of the left and right groove walls, and the width of the notch is smaller than the groove bottom, so that the receiving groove forms a shrinkage structure. A matching groove 11 is formed at the corresponding position between the upper surface of the rigid core layer 1 and the receiving body 21, and the receiving body 21 is arranged in the matching groove 11. By Figure 1 It can be seen that in this embodiment, the structures of the matching groove 11 and the receiving groove are similar, and both are dovetail grooves.

[0061] In this embodiment, the material of the rigid core layer 1 is hard foamed PVC, and the material of the surface layer is ASA.

[0062] A method for manufacturing the above-mentioned luminous floor comprises the following steps:

[0063] 1) The material constituting the rigid core layer of the floor is melted and plasticized by an extruder and squeezed into the inlet of the main channel, and then extruded at the outlet of the main channel to obtain a core layer board with a matching groove 11;

[0064] 2) The material constituting the hard surface layer of the floor is melted and plasticized and extruded from the second extruder through the first side inlet, and then extruded from the outlet of the co-extrusion flow channel to obtain a slab with a surface layer material covering a core layer material and having a container 21;

[0065] 3) The material constituting the luminous floor strip is melted and plasticized by the third extruder and then extruded from the outlet of the mixing channel to obtain the luminous floor as described above.

[0066] like Figures 2 to 7 As shown, a mold for manufacturing the above-mentioned luminous floor is formed by a plurality of mold plates including a first mold discharge plate A, a second mold discharge plate B, a first flow channel forming plate C, a second flow channel forming plate D, a third flow channel forming plate E, a fourth flow channel forming plate F, a fifth flow channel forming plate G and a mold feed plate H which are connected in sequence.

[0067] The mold is provided with a core layer preparation component including a main flow channel 10, a surface layer preparation component including a co-extrusion flow channel S1, and a luminous strip preparation component including a fluorescent flow channel S2; the surface layer preparation component is arranged between the core layer preparation component and the luminous strip preparation component;

[0068] The co-extrusion runner S1 includes a first side inlet S1-1, an upper co-extrusion runner S1-2, a flow guide section S1-3, a lower co-extrusion runner S1-4 and a co-extrusion runner outlet S1-5 which are connected in sequence; the lower co-extrusion runner S1-4 gradually approaches the main runner 10 along the discharge direction, and is connected to the main runner 10 at the co-extrusion runner outlet S1-5; the co-extrusion runner outlet S1-5 is arranged at the main runner outlet 10-3, and covers the main runner outlet 10-3 around.

[0069] The fluorescent flow channel S2 includes a second side inlet S2-1, an upper fluorescent flow channel S2-2, a lower fluorescent flow channel S2-3 and a fluorescent flow channel outlet S2-4 connected in sequence; the lower fluorescent flow channel S2-3 is connected to the mixing flow channel S3 at the fluorescent flow channel outlet S2-4; the mixing flow channel S3 is a mixing channel formed by extending the main flow channel 10 and the co-extrusion flow channel S1 in the discharge direction; the fluorescent flow channel outlet S2-4 is arranged at the outlet S3-1 of the mixing flow channel;

[0070] The first flow channel forming plate C is provided with a first protrusion C11 corresponding to the matching groove 11; the first protrusion C11 gradually becomes larger along the discharge direction; the second mold discharge plate B is provided with a second protrusion B21 corresponding to the accommodating body 21; the second protrusion B21 gradually becomes larger along the discharge direction; the setting position of the second protrusion B21 corresponds to the first protrusion C11, the setting position of the fluorescent flow channel outlet S2-4 corresponds to the second protrusion B21, and according to the discharge direction, the fluorescent flow channel outlet S2-4 is set in front of the second protrusion B21.

[0071] from Figure 2 and Figure 7 It can be seen that the upper co-extrusion flow channel S1-2 is divided into two branch pipes, and is connected to the lower co-extrusion flow channel S1-4 through the same flow guide section S1-3. The flow guide section S1-3 is two gradually flattened and interconnected inclined spaces (because they are connected, that is, the same flow guide section mentioned above); a buffer groove 34 is provided at the junction of the flow guide section S1-3 and the lower co-extrusion flow channel S1-4. The buffer groove 34 can play the role of storing materials, and almost half of the material flow will flow through the buffer groove 34, which has a significant impact on the material flow of the lower co-extrusion flow channel S1-4.

[0072] Comparison Figure 2 and Figures 4 to 7 It can be seen that the lower co-extrusion flow channel S1 - 4 is a gradually shrinking annular channel; and the co-extrusion flow channel outlet S1 - 5 surrounds the main flow channel outlet 10 - 3 .

[0073] Depend on Figure 2 It can be seen that the main channel 10 includes a front section 10-1 with a relatively small aperture and a rear section 10-2 with a relatively large aperture; a flow blocking core rod 20 is arranged in the main channel 10. The setting position of the flow blocking core rod 20 corresponds to the rear half of the front section 10-1 and the front half of the rear section 10-2.

[0074] from Figure 2 and Figure 7It can be seen that the blocking core rod 20 occupies about 50% of the cross-sectional area of ​​the front section 10-1 and about 30% of the cross-sectional area of ​​the rear section 10-1. Figure 2 It can also be seen that a water cooling channel is also provided on the second flow channel forming plate D. This is because the floor core layer manufactured in this embodiment is foamed. The above design is to allow the foaming core to be cooled to different degrees in different parts to achieve different degrees of foaming in different parts. For example, the middle part of the core layer is cooled to the least degree, and the material has the largest foaming space after entering the foaming cavity and leaving the flow-blocking core rod 20. Therefore, the foaming degree in the middle part of the core layer is the highest, which can reach 0.6g / cm³, while the area close to the main channel cavity wall is not only limited in foaming space, but also affected by the temperature of cooling water, and the foaming degree is low, which can reach more than 1.0 g / cm³, especially in the area close to the cavity wall, a crust is formed, and the crust layer is more than 1.0mm, usually between 1.5 and 3.0mm; in the middle area between the above two, the foaming degree is moderate, which can reach 0.8g / cm³; thus, a foaming core with a gradient is formed. Due to its reasonable structure, this foaming core has higher mechanical strength than ordinary foaming cores at the same density.

[0075] Figure 6 The section direction and Figure 3 , 4 , 5 and 7 are all different. Figure 6 The choke core rod 20 is not shown. Figure 6 The dotted box in shows the shape that the lower co-extrusion flow channel S1-4 will form.

[0076] Combination Figure 4 and 5 , it can be seen that Figure 4 The first bulge ratio Figure 5 The first protrusion C11 in the example is larger because the first protrusion C11 gradually becomes larger along the extrusion direction. Figure 4 In FIG. 1 , the dotted box represents the initial shape of the lower co-extrusion flow channel S1 - 4 . Figure 3 In the figure, the dotted frame represents the dividing line between the rigid core layer 1 and the hard surface layer 2 of the floor. This line does not actually exist and is therefore represented by a dotted line.

[0077] Depend on Figure 2 and Figure 3 It can be seen that the lower fluorescent flow channel S2-3 is formed by the docking of the first mold discharge plate A and the second mold discharge plate B.

[0078] Embodiment 2

[0079] A luminous floor, such as Figure 8As shown, the structure is basically the same as that of the first embodiment. The difference is that the core layer of the floor of this embodiment is non-foamed, and is made of PE wood plastic material. Therefore, the mold used to manufacture the floor of this embodiment is different from that of the first embodiment. The details are as follows.

[0080] A mold for making the above-mentioned luminous floor, such as Fig. 9 As shown, the mold is also formed by connecting multiple mold plates in sequence, including a first mold discharge plate A, a second mold discharge plate B, a first flow channel forming plate C, a second flow channel forming plate D, a third flow channel forming plate E, a fourth flow channel forming plate F, a fifth flow channel forming plate G and a mold feed plate H.

[0081] The mold is different from the mold of the second embodiment in that: 1. The shape of the main channel is different. Since foaming is not required, a foaming cavity is not required; 2. According to the conventional design, the front section of the main channel is designed to be slightly larger, and the rear section is designed to be slightly smaller; 3. The flow blocking core rod is not required; 4. The cooling water channel at the second channel forming plate is eliminated. The other structures are the same, so they are not repeated.

[0082] Embodiment 3

[0083] A luminous floor, such as Fig.10 As shown, the structure is basically the same as that of the second embodiment. The difference is that the matching groove 11 of this embodiment is rectangular, that is, a flat groove, not a dovetail groove. However, the receiving groove of this example is still in the shape of a dovetail groove, that is, the outer peripheral contour of the receiving body 21 of this embodiment is rectangular, and the inner peripheral contour is a dovetail groove type.

[0084] To manufacture the above floor, it is only necessary to modify the mold of the second embodiment appropriately, and the modification is only the shape of the first protrusion C11, which is designed to be a rectangle. Similarly, this rectangle also needs to be gradually enlarged.

[0085] The other structures are the same, so they will not be described in detail.

Claims

1. A mold for preparing a luminous floor, the luminous floor comprising a rigid core layer (1) and a hard surface layer (2) at least covering the upper surface of the rigid core layer, the upper surface of the hard surface layer (2) forming a receiving body (21) with a receiving groove; and further comprising a luminous strip (3) arranged in the receiving groove; The receiving groove is arranged parallel to the length direction of the floor; The accommodating groove comprises a groove bottom and left and right groove walls; the upper end surfaces of the left and right groove walls are respectively connected to the hard surface layers on the left and right sides of the accommodating groove, and the lower end surfaces are respectively connected to the two ends of the groove bottom; a notch is formed between the two upper end surfaces of the left and right groove walls, and the width of the notch is smaller than that of the groove bottom, so that the accommodating groove forms a shrinkage structure; A matching groove (11) is formed at a position on the upper surface of the rigid core layer (1) corresponding to the accommodating body (21), and the accommodating body (21) is arranged in the matching groove (11); The matching groove (11) is a flat groove or a dovetail groove; The material of the rigid core layer (1) is polyolefin wood plastic or rigid foamed PVC; the material of the surface layer is selected from one of ASA, PMMA, PA, PP, HDPE and PC; Features: The mold is formed by connecting a plurality of mold plates including a first mold discharge plate (A), a second mold discharge plate (B), a plurality of flow channel forming plates (C-G) and a mold feed plate (H) in sequence; The mold is provided with a core layer preparation component including a main flow channel (10), a surface layer preparation component including a co-extrusion flow channel (S1), and a luminous strip preparation component including a fluorescent flow channel (S2); the surface layer preparation component is arranged between the core layer preparation component and the luminous strip preparation component; The co-extruded flow channel (S1) comprises a first side inlet (S1-1), an upper co-extruded flow channel (S1-2), a flow guide section (S1-3), a lower co-extruded flow channel (S1-4) and a co-extruded flow channel outlet (S1-5) connected in sequence; the lower co-extruded flow channel (S1-4) gradually approaches the main flow channel (10) along the discharge direction, and is connected to the main flow channel (10) at the co-extruded flow channel outlet (S1-5); the co-extruded flow channel outlet (S1-5) is arranged at the main flow channel outlet (10-3), and covers at least the upper surface of the main flow channel outlet (10-3); The fluorescent flow channel (S2) comprises a second side inlet (S2-1), an upper fluorescent flow channel (S2-2), a lower fluorescent flow channel (S2-3) and a fluorescent flow channel outlet (S2-4) connected in sequence; the lower fluorescent flow channel (S2-3) is connected to the mixing flow channel (S3) at the fluorescent flow channel outlet (S2-4); the mixing flow channel (S3) is a mixing channel formed by extending the main flow channel (10) and the co-extrusion flow channel (S1) in the discharge direction; the fluorescent flow channel outlet (S2-4) is arranged at the outlet (S3-1) of the mixing flow channel; The plurality of flow channel forming plates (C-G) at least include a first flow channel forming plate (C), a second flow channel forming plate (D) and a third flow channel forming plate (E) which are connected in sequence in the direction from the first mold discharge plate (A) to the mold feed plate (H); the third flow channel forming plate (E) is directly connected to the mold feed plate (H) or connected through other flow channel forming plates; the first flow channel forming plate (C) is provided with a first protrusion (C11) corresponding to the matching groove (11); the first protrusion (C11) is arranged along the discharge direction The second mold discharge plate (B) is provided with a second protrusion (B21) corresponding to the accommodating body (21); the second protrusion (B21) gradually becomes larger along the discharge direction; the setting position of the second protrusion (B21) corresponds to the first protrusion (C11), the setting position of the fluorescent flow channel outlet (S2-4) corresponds to the second protrusion (B21), and according to the discharge direction, the fluorescent flow channel outlet (S2-4) is set in front of the second protrusion (B21); The main flow channel (10) comprises a front section (10-1) with a relatively small aperture and a rear section (10-2) with a relatively large aperture; a flow-blocking core rod (20) is provided in the main flow channel (10); The setting position of the blocking core rod (20) corresponds to at least the rear half of the front section (10-1) and the front half of the rear section (10-2); The upper co-extruded flow channel (S1-2) is divided into two branch pipes and is connected to the lower co-extruded flow channel (S1-4) through the same flow guide section (S1-3); the flow guide section (S1-3) is two inclined spaces that are gradually flattened and connected to each other; a buffer groove (34) is provided at the junction of the flow guide section (S1-3) and the lower co-extruded flow channel (S1-4); The lower co-extrusion flow channel (S1-4) is a gradually shrinking annular channel; and the co-extrusion flow channel outlet (S1-5) surrounds the main flow channel outlet (10-3); The lower fluorescent flow channel (S2-3) is formed by the docking of the first mold discharge plate (A) and the second mold discharge plate (B).

2. A method for preparing a luminous floor, using the mold as claimed in claim 1, specifically comprising the following steps: 1) The material constituting the rigid core layer of the floor is melted and plasticized by an extruder and then extruded from the main channel outlet (10-3) to obtain a core layer board with a matching groove (11); 2) The material constituting the hard surface layer of the floor is melted and plasticized and extruded from the second extruder through the first side inlet, and then extruded from the co-extrusion flow channel outlet (S1-5) to obtain a slab with a surface layer material covering a core layer material and having a container (21); 3) The material constituting the luminous floor strip is melted and plasticized and extruded from the second side inlet by the third extruder, and then extruded from the outlet (S3-1) of the mixing channel to obtain the luminous floor as claimed in claim 1.

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