Melamine veneer with flame-retardant and damp-proof functions and preparation method thereof

Abstract

The invention relates to the technical field of production of veneers, in particular to a melamine veneer with flame-retardant and damp-proof functions and a preparation method of the melamine veneer. On the other hand, the flame-retardant layer and the damp-proof layer also have corresponding protection functions, so that the flame-retardant and damp-proof performance of the veneer is further improved; in addition, through the arranged veneering machining equipment, when the veneer is subjected to protective film layer machining, contact between a protective film and a veneer body is smoother through an arranged leveling auxiliary mechanism, and the machining quality of the veneer is improved; the cleaning auxiliary assembly has a corresponding cleaning effect on the protective film and the plate body, the influence of adhered impurities on veneering processing is avoided, a second assembly in the cleaning auxiliary assembly can be used in cooperation with the leveling auxiliary mechanism, a leveling auxiliary effect is provided for the protective film, and the veneering quality of the protective film is improved. And the processing quality of the veneer is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of decorative panel production, in particular to a melamine decorative panel with flame retardant and moisture-proof functions and a preparation method thereof. Background Art

[0002] Existing flame-retardant decorative panels generally use medium-density fiberboard as the base material and melamine impregnated paper as the decorative layer material. At the same time, the assembled boards are placed in a hot press and hot-pressed under certain temperature, pressure and time conditions to make the layers tightly bonded to form a melamine decorative panel with flame-retardant function.

[0003] The existing document with announcement number CN211341499U discloses a scratch-resistant melamine decorative panel, which includes a substrate layer, a first wear-resistant layer is arranged on the top of the substrate layer, a first toughness layer is arranged on the top of the first wear-resistant layer, a first flame-retardant layer is arranged on the top of the first toughness layer, and a first moisture-proof layer is arranged on the top of the first flame-retardant layer. The utility model realizes a scratch-resistant melamine decorative panel through the mutual cooperation of the substrate layer, the first wear-resistant layer, the first toughness layer, the first flame-retardant layer, the first moisture-proof layer, the first scratch-resistant layer, the second wear-resistant layer, the second toughness layer, the second flame-retardant layer, the second moisture-proof layer, the second scratch-resistant layer, the first protective layer and the second protective layer, which greatly improves the anti-scratch effect of the melamine decorative panel and avoids the phenomenon of being scratched during use.

[0004] After searching the document with announcement number CN219564133U, a building template veneer machine is disclosed, which includes a base, an L-shaped seat is installed on the top of the base at the right side of the side plate, a card seat is installed at the middle position of the top of the base, a connecting frame is fixedly installed on the front of the L-shaped seat, a first motor is installed on the bottom of the connecting frame, and mounting plates are fixedly installed on both sides of the L-shaped seat, and a shaft is movably connected between the mounting plates through a bearing, and a hard cloth is wound around the outside of the shaft. The building template veneer machine drives the rotation of the worm through the first motor, and the shaft can be driven to rotate through the worm gear, and then the hard cloth can be pushed to expand and contract under the cooperation of the first connecting rod and the second connecting rod, so that when the film roller is filming the template, the panel that has been coated can be flattened and shielded, preventing bubbles and contamination of the film during film coating.

[0005] The existing decorative panels themselves have corresponding flame retardant and moisture-proof layers, but lack corresponding protection for the outer side of the panel surface. Generally, a protective film layer is affixed to the outer panel surface so that the outer side of the panel body has a protective layer. The existing film laminating process is generally carried out by a film laminating machine, and the pressing roller presses the protective film onto the panel surface. The pressing roller mechanism lacks corresponding auxiliary components to level the film layer in order to improve its processing quality. Therefore, further improvement and optimization are needed.

[0006] To this end, the present invention provides a melamine decorative panel with flame retardant and moisture-proof functions and a preparation method thereof to solve the above problems. Summary of the invention

[0007] The object of the present invention is to provide a melamine decorative panel with flame retardant and moisture-proof functions and a preparation method thereof, so as to solve the problems raised in the above background technology.

[0008] To achieve the above object, the present invention provides the following technical solution: a melamine decorative panel with flame retardant and moisture-proof function, comprising a melamine decorative panel body, wherein the melamine decorative panel body comprises a substrate layer, a wear-resistant layer, a flame retardant layer, a moisture-proof layer and a protective film layer; Wear-resistant layers are arranged on both sides of the substrate layer, a flame-retardant layer is arranged on the wear-resistant layer, a moisture-proof layer is arranged on the flame-retardant layer, and a protective film layer is arranged on the moisture-proof layer.

[0009] A method for preparing a melamine veneer panel with flame retardant and moisture-proof functions, comprising a veneer machine, wherein the veneer machine comprises a film laminating equipment workbench, a conveying frame, a pressing roller, a protective film conveying roller and a leveling auxiliary mechanism; A conveying frame is arranged at one end of the film laminating equipment workbench, the pressing roller and the protective film conveying roller are arranged on the film laminating equipment workbench, and a protective film is wound on the protective film conveying roller, and a plate body is placed on the film laminating equipment workbench; The auxiliary leveling mechanism assists in leveling the protective film.

[0010] Preferably, the leveling auxiliary mechanism includes a fixed foot plate, a supporting frame, a mounting slot, a mounting card plate, an auxiliary spring, a movable body and a leveling roller; the fixed foot plate is arranged at one end of the supporting frame, and the fixed foot plate is fixedly connected to the workbench of the film laminating equipment by screws, a mounting slot is arranged at the top frame opening of the supporting frame, the mounting card plate is adapted to be engaged with the mounting slot, and the mounting card plate is fixed by fastening screws, auxiliary springs are equidistantly fixed on the bottom side of the mounting card plate, and a carrying handle is fixed on the top side of the mounting card plate; the other end of the auxiliary spring is fixedly arranged on the movable body, and a leveling roller is arranged on the bottom side of the movable body.

[0011] Preferably, connecting shafts are symmetrically fixedly provided at both ends of the leveling roller, the connecting shafts are movably inserted in the supporting plate, a connecting plate is fixedly provided on the top of the supporting plate, and the connecting plate is fixed to the movable body by screws.

[0012] Preferably, a cleaning auxiliary component is provided on one side of the fixed foot plate.

[0013] Preferably, the cleaning auxiliary component includes a support rod, a bearing rod, a first component and a second component; one end of the support rod is fixedly arranged on one side of the fixed foot plate, and the other end of the support rod is fixedly arranged with a bearing rod, and the first component and the second component are arranged on the bearing rod; the first component cleans the surface of the board body, and the second component cleans the protective film.

[0014] Preferably, the first component includes a connecting plate, a supporting shaft, a loading plate and a cleaning brush; the connecting plate is fixedly arranged on the supporting rod by screws, and the connecting plate is fixedly arranged at one end of the supporting shaft, and the loading plate is fixedly arranged at the other end of the supporting shaft, and the cleaning brushes are evenly arranged on the bottom side of the loading plate.

[0015] Preferably, the second component includes an auxiliary bearing, a connecting shaft, a limit stop ring, a loading shaft, a limit slot, a rubber tube, a connecting threaded groove, a connecting threaded column, a limit stop cover, a limit strip, a accommodating cavity, an auxiliary hole groove, a frustum-shaped ring body and an auxiliary side strip; the auxiliary bearing is embedded in the load-bearing rod, and the auxiliary bearing is connected to the connecting shaft, the connecting shaft is fixedly arranged at one end of the loading shaft, and the loading shaft is fixedly provided with a limit stop ring at a side position close to one end of the connecting shaft, a limit slot is arranged on the side wall of the loading shaft, and a limit strip is fixedly arranged on the inner side wall of the rubber tube.

[0016] Preferably, the limit card strip is adapted to be plugged into the limit card slot; the end face of one end of the loading shaft rod is provided with a connecting thread groove, the connecting thread groove is adapted to be threadedly connected with a connecting thread column, a limit stop cover is fixedly provided at one end of the connecting thread column, and the outer side wall of the limit stop cover is equidistantly provided with rotation auxiliary protrusions.

[0017] Preferably, the rubber tube is provided with accommodating cavities at equal intervals, the accommodating cavities are arranged throughout the rubber tube, and auxiliary side strips are arranged at the cavity openings of the accommodating cavities; auxiliary holes and grooves are evenly arranged on the side walls of the rubber tube, and a frustum-shaped ring body is arranged at the inner groove openings of the auxiliary holes and grooves.

[0018] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a protective film layer on the outermost layer, which, on the one hand, has an outer layer protection effect on the decorative panel; on the other hand, it also has corresponding protection functions for the flame retardant layer and the moisture-proof layer, further improving the flame retardant and moisture-proof properties of the decorative panel; further, the present invention provides veneering processing equipment, and when the protective film layer of the decorative panel is processed, the contact between the protective film and the plate body is smoother through the provided leveling auxiliary mechanism, thereby improving its processing quality; the provided cleaning auxiliary component has corresponding cleaning effects on the protective film and the plate body respectively, avoiding the influence of adhered impurities on the veneering processing, and the second component in the cleaning auxiliary component can also be used in conjunction with the leveling auxiliary mechanism to provide a leveling auxiliary effect on the protective film, thereby further improving the processing quality of the decorative panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the melamine decorative panel of the present invention; Figure 2 It is a schematic diagram of the local structural connection of the melamine veneer panel of the present invention; Figure 3 It is a schematic diagram of the left side of the structure connection of the veneer veneer processing equipment of the present invention; Figure 4 For the present invention Figure 3 A magnified schematic diagram of the local structural connection; Figure 5 It is a schematic diagram of the right side of the structure connection of the veneer veneer processing equipment of the present invention; Figure 6 The right side schematic diagram of the connection between the leveling auxiliary mechanism and the cleaning auxiliary component structure of the present invention; Figure 7 For the present invention Figure 6 A magnified schematic diagram of the local structural connection; Figure 8 A bottom view of the connection structure between the leveling auxiliary mechanism and the cleaning auxiliary component of the present invention; Fig. 9 For the present invention Figure 8 A magnified schematic diagram of the local structural connection; Fig.10 The left side schematic diagram of the connection between the leveling auxiliary mechanism and the cleaning auxiliary component structure of the present invention; Fig.11 For the present invention Figure 8 An enlarged schematic diagram of the connection between the middle load-bearing rod and the first component and the local structure of the second component; Fig.12 For the present invention Figure 8 A partial enlarged schematic diagram of the end structure connection of the middle rubber tube; Fig.13 It is a schematic diagram of the local structural connection between the rubber tube and the loading shaft rod of the present invention; Fig.14 For the present invention Fig.13 A magnified schematic diagram of the local structural connection; Fig.15 It is a schematic diagram of the local structural connection of the rubber tube of the present invention; Fig.16 For the present invention Fig.15 Enlarged schematic diagram of local structural connection.

[0020] In the figure: melamine veneer panel body 1, substrate layer 11, wear-resistant layer 12, flame retardant layer 13, moisture-proof layer 14, protective film layer 15, film laminating equipment workbench 2, conveyor frame 3, pressing roller 4, protective film conveying roller 5, protective film 6, plate body 7, fixed foot plate 801, bearing frame 802, installation slot 803, installation card plate 804, auxiliary spring 805, movable body 806, leveling roller 807, connecting plug shaft 80801, supporting plate 80802, connecting plate 80803, supporting rod 901, bearing rod 902, Connecting disk 90301, supporting shaft 90302, loading plate 90303, cleaning brush 90304, auxiliary bearing 90401, connecting shaft body 90402, limiting retaining ring 90403, loading shaft rod 90404, limiting card slot 90405, rubber tube 90406, connecting thread groove 90407, connecting thread column 90408, limiting retaining cover 90409, limiting card strip 90410, accommodating cavity 90411, auxiliary hole groove 90412, frustum-shaped ring body 90413, auxiliary side strip 90414. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention are described clearly and completely below. The embodiments of the present invention and all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0022] Example 1: Please refer to Figure 1-Figure 2 A melamine decorative panel with flame retardant and moisture-proof functions comprises a melamine decorative panel body 1, wherein the melamine decorative panel body 1 comprises a substrate layer 11, a wear-resistant layer 12, a flame retardant layer 13, a moisture-proof layer 14 and a protective film layer 15; wherein the wear-resistant layer 12 is arranged on both sides of the substrate layer 11, the flame retardant layer 13 is arranged on the wear-resistant layer 12, the moisture-proof layer 14 is arranged on the flame retardant layer 13, and the protective film layer 15 is arranged on the moisture-proof layer 14; by arranging the protective film layer 15 on the outermost layer, the present invention has an outer layer protection function for the decorative panel on the one hand; on the other hand, it also has corresponding protection functions for the flame retardant layer 13 and the moisture-proof layer 14, thereby further improving the flame retardant and moisture-proof properties of the decorative panel.

[0023] Example 2: Based on Example 1, please refer to Figure 3-Figure 9A method for preparing a melamine decorative panel with flame retardant and moisture-proof functions includes a veneer machine, which includes a film laminating equipment workbench 2, a conveying frame 3, a pressing roller 4, a protective film conveying roller 5 and a leveling auxiliary mechanism; a conveying frame 3 is provided at one end of the film laminating equipment workbench 2, the pressing roller 4 and the protective film conveying roller 5 are arranged on the film laminating equipment workbench 2, and a protective film 6 is wound on the protective film conveying roller 5, and a plate body 7 is placed on the film laminating equipment workbench 2.

[0024] The auxiliary leveling mechanism here assists in leveling the protective film 6; the auxiliary leveling mechanism here includes a fixed foot plate 801, a carrier frame 802, a mounting slot 803, a mounting card plate 804, an auxiliary spring 805, a movable body 806 and a leveling roller 807; the fixed foot plate 801 is arranged at one end of the carrier frame 802, and the fixed foot plate 801 is fixedly connected to the film laminating equipment workbench 2 by screws, and a mounting slot 803 is arranged at the top frame opening of the carrier frame 802, and the mounting card plate 804 is adapted to be clamped with the mounting slot 803, and the mounting card plate 804 is fixed by tightening screws Auxiliary springs 805 are equidistantly fixed on the bottom side of the mounting card 804, and a carrying handle is fixed on the top side of the mounting card 804; the other end of the auxiliary spring 805 is fixed on the movable body 806, and a leveling roller 807 is arranged on the bottom side of the movable body 806; the two ends of the leveling roller 807 here are symmetrically fixed with connecting shafts 80801, and the connecting shafts 80801 are movably inserted in the supporting plate 80802, and a connecting plate 80803 is fixed on the top of the supporting plate 80802, and the connecting plate 80803 is fixed to the movable body 806 by screws.

[0025] In this embodiment, the protective film 6 is mainly flattened by the set leveling auxiliary mechanism, that is, the protective film 6 is flattened by the leveling roller 807 and then pressed together by the pressing roller 4. The leveling roller 807 here can roll, thereby avoiding scratches and damage to the protective film 6 while achieving the leveling function.

[0026] Example 3: Based on Example 2, please refer to Figure 10-Figure 16 A cleaning auxiliary component is provided on one side of the fixed foot plate 801; the cleaning auxiliary component includes a support rod 901, a load-bearing rod 902, a first component and a second component; one end of the support rod 901 is fixedly provided on one side of the fixed foot plate 801, and a load-bearing rod 902 is fixedly provided on the other end of the support rod 901, and a first component and a second component are provided on the load-bearing rod 902; the first component cleans the surface of the plate body 7, and the second component cleans the protective film 6.

[0027] The first component here includes a connecting disk 90301, a support shaft 90302, a loading plate 90303 and a cleaning brush 90304; the connecting disk 90301 is fixed on the supporting rod 902 by screws, and the connecting disk 90301 is fixedly set at one end of the support shaft 90302, and the loading plate 90303 is fixedly set at the other end of the support shaft 90302, and the cleaning brushes 90304 are evenly arranged on the bottom side of the loading plate 90303.

[0028] The impurities on the surface of the plate body 7 are cleaned by a cleaning brush 90304 so as to ensure the tightness of the contact between the protective film 6 and the surface of the plate body 7 during the subsequent pressing of the protective film 6 onto the plate body 7 .

[0029] The second component here includes an auxiliary bearing 90401, a connecting shaft 90402, a limit ring 90403, a loading shaft 90404, a limit slot 90405, a rubber tube 90406, a connecting thread groove 90407, a connecting thread column 90408, a limit cover 90409, a limit strip 90410, a containing cavity 90411, an auxiliary hole groove 90412, a frustum ring 90413 and an auxiliary side strip 904 14; the auxiliary bearing 90401 is embedded in the load-bearing rod 902, and the auxiliary bearing 90401 is connected to the connecting shaft 90402, the connecting shaft 90402 is fixedly arranged at one end of the loading shaft 90404, and the loading shaft 90404 is fixedly provided with a limited stop ring 90403 at a side position close to one end of the connecting shaft 90402, and a limited slot 90405 is provided on the side wall of the loading shaft 90404, The inner wall of the rubber tube 90406 is fixedly provided with a limit clamping strip 90410; the limit clamping strip 90410 is adapted to be plugged into the limit clamping groove 90405; the end surface of one end of the loading shaft 90404 is provided with a connecting thread groove 90407, and the connecting thread groove 90407 is adapted to be threadedly connected with the connecting thread column 90408, and a limit stop cover 90409 is fixedly provided at one end of the connecting thread column 90408, and the outer surface of the limit stop cover 90409 is provided with a limit stop cover 90409. The side wall is provided with rotating auxiliary protrusions at equal intervals; the rubber tube 90406 is provided with a accommodating cavity 90411 at equal intervals, the accommodating cavity 90411 is arranged through the rubber tube 90406, and an auxiliary side strip 90414 is arranged at the cavity mouth of the accommodating cavity 90411; the side wall of the rubber tube 90406 is evenly provided with auxiliary hole grooves 90412, and the inner groove position of the auxiliary hole groove 90412 is provided with a frustum-shaped ring body 90413.

[0030] In this embodiment, the protective film 6 is cleaned by a rubber tube 90406, wherein the loading shaft 90404 can rotate under the action of the auxiliary bearing 90401, thereby driving the rubber tube 90406 to rotate, and when the protective film 6 is closely cleaned, scratches and damage to the protective film 6 are avoided. Furthermore, a accommodating cavity 90411 is provided in the rubber tube 90406 and an auxiliary hole groove 90412 is provided on the side wall of the rubber tube 90406, the purpose of which is to have a certain collection effect on particulate impurities adhering to the protective film 6, so as to avoid the protective film 6 being squeezed and damaged by particulate impurities when the protective film 6 is cleaned by the rubber tube 90406; here, the rubber tube 90406 can also be used in conjunction with the leveling roller 807 to provide a leveling auxiliary effect on the protective film 6, thereby further improving the processing quality of the decorative panel.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A melamine decorative panel with flame retardant and moisture-proof functions, characterized in that: It comprises a melamine veneer panel body (1), wherein the melamine veneer panel body (1) comprises a base material layer (11), a wear-resistant layer (12), a flame-retardant layer (13), a moisture-proof layer (14) and a protective film layer (15); Wear-resistant layers (12) are provided on both sides of the base material layer (11), a flame-retardant layer (13) is provided on the wear-resistant layer (12), a moisture-proof layer (14) is provided on the flame-retardant layer (13), and a protective film layer (15) is provided on the moisture-proof layer (14).

2. A method for preparing a melamine decorative panel with flame retardant and moisture-proof functions, characterized in that: The laminating machine comprises a laminating equipment workbench (2), a conveying frame (3), a pressing roller (4), a protective film conveying roller (5) and a leveling auxiliary mechanism; A conveying frame (3) is provided at one end of the film laminating equipment workbench (2); the pressing roller (4) and the protective film conveying roller (5) are arranged on the film laminating equipment workbench (2); a protective film (6) is wound on the protective film conveying roller (5); and a plate body (7) is placed on the film laminating equipment workbench (2); The auxiliary leveling mechanism assists in leveling the protective film (6).

3. The method for preparing a melamine decorative panel with flame retardant and moisture-proof function according to claim 2, characterized in that: The leveling auxiliary mechanism comprises a fixed foot plate (801), a bearing frame (802), a mounting slot (803), a mounting card plate (804), an auxiliary spring (805), a movable body (806) and a leveling roller (807); the fixed foot plate (801) is arranged at one end of the bearing frame (802), and the fixed foot plate (801) is fixedly connected to the film laminating equipment workbench (2) by means of screws; the mounting slot is arranged at the top frame opening of the bearing frame (802) (803), the mounting card plate (804) is adapted to be snap-fitted with the mounting card slot (803), and the mounting card plate (804) is fixed by means of fastening screws, auxiliary springs (805) are fixedly arranged at equal intervals on the bottom side of the mounting card plate (804), and a carrying handle is fixedly arranged on the top side of the mounting card plate (804); the other end of the auxiliary spring (805) is fixedly arranged on the movable body (806), and a leveling roller (807) is arranged on the bottom side of the movable body (806).

4. The method for preparing a melamine decorative panel with flame retardant and moisture-proof function according to claim 3, characterized in that: Connecting plug shafts (80801) are symmetrically fixedly arranged at both ends of the leveling roller (807), and the connecting plug shafts (80801) are movably inserted in the supporting plate (80802). A connecting plate (80803) is fixedly arranged at the top of the supporting plate (80802), and the connecting plate (80803) is fixed to the movable body (806) by means of screws.

5. The method for preparing a melamine decorative panel with flame retardant and moisture-proof function according to claim 3, characterized in that: A cleaning auxiliary component is provided on one side of the fixed foot plate (801).

6. The method for preparing a melamine decorative panel with flame retardant and moisture-proof function according to claim 5, characterized in that: The cleaning auxiliary component comprises a support rod (901), a bearing rod (902), a first component and a second component; one end of the support rod (901) is fixedly arranged on one side of a fixed foot plate (801), the other end of the support rod (901) is fixedly arranged with a bearing rod (902), and the bearing rod (902) is arranged with a first component and a second component; the first component cleans the surface of the plate body (7), and the second component cleans the protective film (6).

7. The method for preparing a melamine decorative panel with flame retardant and moisture-proof function according to claim 6, characterized in that: The first component comprises a connecting disk (90301), a supporting shaft (90302), a loading plate (90303) and a cleaning brush (90304); the connecting disk (90301) is fixedly arranged on the supporting rod (902) by means of screws, and the connecting disk (90301) is fixedly arranged at one end of the supporting shaft (90302), the loading plate (90303) is fixedly arranged at the other end of the supporting shaft (90302), and the cleaning brush (90304) is evenly arranged on the bottom side of the loading plate (90303).

8. The method for preparing a melamine decorative panel with flame retardant and moisture-proof function according to claim 6, characterized in that: The second component comprises an auxiliary bearing (90401), a connecting shaft (90402), a limit ring (90403), a loading shaft (90404), a limit slot (90405), a rubber tube (90406), a connecting threaded groove (90407), a connecting threaded column (90408), a limit stop cover (90409), a limit clip strip (90410), a containing cavity (90411), an auxiliary hole groove (90412), a frustum-shaped ring body (90413) and an auxiliary side strip (90414); the auxiliary bearing (90401) is embedded in The loading shaft (90404) is connected to the loading shaft (90404), and the auxiliary bearing (90401) is connected to the connecting shaft (90402). The connecting shaft (90402) is fixedly arranged at one end of the loading shaft (90404), and a limiting retaining ring (90403) is fixedly arranged on the side of the loading shaft (90404) close to one end of the connecting shaft (90402). A limiting clamping groove (90405) is arranged on the side wall of the loading shaft (90404), and a limiting clamping strip (90410) is fixedly arranged on the inner side wall of the rubber tube (90406).

9. The method for preparing a melamine decorative panel with flame retardant and moisture-proof function according to claim 8, characterized in that: The limit clamping strip (90410) is plugged in with the limit clamping groove (90405); the end surface of one end of the loading shaft rod (90404) is provided with a connecting thread groove (90407), the connecting thread groove (90407) is threadedly connected with the connecting thread column (90408), a limit stop cover (90409) is fixedly provided at one end of the connecting thread column (90408), and the outer side wall of the limit stop cover (90409) is equidistantly provided with rotation auxiliary protrusions.

10. The method for preparing a melamine decorative panel with flame retardant and moisture-proof function according to claim 8, characterized in that: The rubber tube (90406) is provided with accommodating cavities (90411) at equal intervals. The accommodating cavities (90411) are arranged through the rubber tube (90406), and an auxiliary side strip (90414) is arranged at the cavity opening of the accommodating cavity (90411); auxiliary hole grooves (90412) are evenly arranged on the side wall of the rubber tube (90406), and a frustum-shaped ring body (90413) is arranged at the inner groove opening of the auxiliary hole groove (90412).

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