Hot melt adhesive spraying device for compounding elastic decorative cloth

Abstract

The utility model relates to the technical field of coating equipment, and provides a hot melt adhesive spraying device for compounding elastic decorative cloth, the hot melt adhesive spraying device comprises a coating roller for conveying cloth and a spraying mechanism arranged on the outer side of the coating roller, the spraying mechanism comprises an adhesive spraying seat, two adhesive blocking plates and two side protection plates, the adhesive blocking plates are slidably arranged on the adhesive spraying seat through inclined guide structures, and the side protection plates are arranged on the outer side of the coating roller. In the initial state, the two glue blocking plates are arranged in a spaced mode and form a glue outlet channel, and a glue solution area is jointly formed between the two glue blocking plates and the glue spraying base. The two side protection plates are fixed to the two opposite side faces of the glue spraying base respectively, and a guide mechanism is arranged between each side protection plate and the two glue blocking plates and used for forcing the two glue blocking plates to be close to each other or away from each other. And a fine adjustment mechanism for forcing the guide mechanism to move is mounted on the side surface of one side protection plate. On the basis, the width of the glue outlet channel can be conveniently adjusted, so that the thickness of a glue layer coated on the surface of the cloth can be accurately controlled to adapt to the gluing operation of different types of cloth.

Description

Technical Field

[0001] The present application relates to the technical field of coating equipment, and in particular to a hot melt adhesive spraying device for composite elastic decorative fabrics. Background Art

[0002] As the name suggests, stretch fabric is a decorative fabric with excellent elasticity and stretchability. Typically made from a combination of fibers and blended materials, it can adapt to different shapes and sizes without compromising the fabric's structure. Therefore, it's ideal for home furnishings such as sofa covers, bedspreads, curtains, and cushions. It not only effectively wraps and protects furniture, but also adds beauty and warmth to any space through its rich colors and patterns.

[0003] Currently, a Chinese patent with the announcement number CN117301687A discloses an elastic decorative fabric. By evenly spraying hot melt adhesive on the surface of the fiber mesh structure, a non-woven fabric base fabric with a glue layer can be obtained. Then, two layers of elastic fabric are respectively attached to the two sides of the non-woven fabric base fabric. After hot pressing and shaping, the hot melt adhesive layer can be tightly bonded to the elastic fabric, thereby obtaining an elastic decorative fabric.

[0004] The operation of spraying hot melt adhesive onto the web structure is typically performed on a coating device. Existing coating equipment typically includes a coating roller for conveying the fabric and a spraying device disposed outside the coating roller. The spraying device includes a glue spraying seat, a glue spraying nozzle fixed to the glue spraying seat, and a glue baffle disposed on the side of the glue spraying seat. A glue liquid area is formed between the glue baffle and the glue spraying seat, and the glue baffle is provided with a glue outlet channel for the glue to flow out. When the coating roller rotates to convey the fabric, the hot melt adhesive sprayed from the glue spraying nozzle enters the glue liquid area and is evenly coated on the fabric surface through the glue outlet channel.

[0005] Regarding the aforementioned related technical solutions, when performing composite bonding of fabrics, the required adhesive layer thickness varies depending on the fabric type and structural characteristics. However, the spraying device can only change the thickness of the hot melt adhesive applied to the fabric surface by adjusting the amount of glue delivered per unit time from the glue nozzle. Moreover, given a fixed glue channel width, the thickness of the adhesive layer applied to the fabric surface is primarily dependent on the width of the glue channel. Therefore, precise control of the adhesive layer thickness is often difficult, and this requires improvement. Utility Model Content

[0006] Based on this, the present application provides a hot melt adhesive spraying device for elastic decorative fabric composite, which can easily adjust the width of the glue outlet channel, and thus can accurately control the thickness of the glue layer coated on the fabric surface to adapt to the gluing operation of different types of fabrics.

[0007] The hot melt adhesive spraying device for elastic decorative fabric composite provided in this application adopts the following technical solution:

[0008] A hot melt adhesive spraying device for elastic decorative fabric compounding includes a coating roller for conveying fabric and a spraying mechanism arranged on the outside of the coating roller. The spraying mechanism includes a glue spraying seat, two glue baffles and two side guards. The glue baffles are slidably arranged on the glue spraying seat through an inclined guide structure. In the initial state, the two glue baffles are arranged at intervals and form a glue outlet channel, and a glue liquid area is jointly formed between the two glue baffles and the glue spraying seat; the two side guards are respectively fixed to the two opposite side sides of the glue spraying seat, and a guide mechanism is provided between each side guard plate and the two glue baffles for forcing the two glue baffles to approach / move away from each other; a fine-tuning mechanism for forcing the guide mechanism to move is installed on the side of one of the side guards.

[0009] By adopting the above-mentioned technical solution, when the hot melt adhesive spraying device of the present application is in use, the hot melt adhesive in a molten state enters the glue liquid area through the glue spraying seat, and uses internal pressure to flow out from the glue outlet channel between the two glue baffles, thereby being coated on the surface of the fabric. The glue baffles are slidably arranged on the glue spraying seat via an inclined guide structure. By controlling the action of the fine-tuning mechanism to force the guide mechanism to move, the two glue baffles can be moved closer to or farther away from each other. Changing the spacing between the two glue baffles can change the width of the glue outlet channel, which has the effect of quickly and conveniently adjusting the width of the glue outlet channel, and thus can accurately control the thickness of the glue layer coated on the fabric surface to adapt to the gluing operation of different types of fabrics.

[0010] Optionally, the inclined guide structure includes a first inclined portion arranged on the glue spray seat and a second inclined portion arranged on the glue baffle, the first inclined portion is inclined toward the direction close to the glue outlet channel; the side of the first inclined portion is provided with a dovetail groove, and the side of the second inclined portion is provided with a dovetail block that is slidably adapted to the dovetail groove.

[0011] By adopting the above-mentioned technical solution, the first inclined portion and the second inclined portion can be moved relative to each other along the inclined surfaces abutting each other through the snap-fitting and sliding cooperation between the dovetail block and the dovetail groove, and the two rubber baffles can be moved synchronously through the guide mechanism, and then in the process of the oblique movement of the two rubber baffles, the two rubber baffles can be brought closer to or farther away from each other, thereby achieving the effect of quickly adjusting the width of the glue area.

[0012] Optionally, the side guard plate is provided with a translation groove, and the guide mechanism includes a guide plate and a cross guide column integrally formed on the side of the guide plate, the cross guide column is slidably connected to the side guard plate, and the moving direction of the cross guide column is the same as the opening direction of the glue outlet channel; the guide plate is movably arranged inside the translation groove, and the guide plate is provided with a strip groove, and the extension direction of the strip groove is perpendicular to the moving direction of the cross guide column; each side of the glue baffle is fixed with an extension boss, and two adjacent extension bosses are movably arranged together inside the strip groove.

[0013] By adopting the above-mentioned technical solution, the cross guide column can be moved on the side guard plate by controlling the fine-tuning mechanism. The movement of the cross guide column can drive the guide plate to move in the translation groove, thereby making the inner wall of the strip groove press against the extended protrusion and drive the rubber baffle to move. The sliding connection between the rubber baffle and the glue spray seat can make the two rubber baffles approach each other / move away from each other.

[0014] Optionally, the fine-tuning mechanism includes a linear rack fixed to the transverse guide column and a rotating gear rotatably mounted on the side guard plate, and the rotating gear and the linear rack are meshed with each other for transmission.

[0015] By adopting the above-mentioned technical solution, when the width of the glue outlet channel needs to be adjusted, the operator can turn the rotating gear to drive the linear rack and the cross guide column to move, thereby forcing the two glue baffles to move closer to each other / away from each other; since the meshing accuracy of the rotating gear and the linear rack is relatively high, it can have a precise adjustment effect, which is conducive to precise control of the thickness of the glue layer coated on the surface of the fabric.

[0016] Optionally, sealing plates are respectively provided on the outer peripheral sides of the guide plates, and the sealing plates normally cover the translation grooves.

[0017] By adopting the above-mentioned technical solution, by setting a sealing plate so that it normally covers the translation groove, the glue area can be well sealed, so that the molten hot melt glue can only flow out through the glue outlet channel, reducing the possibility of the hot melt glue overflowing from the translation groove to the outside of the side guard plate.

[0018] Optionally, an arc-shaped groove is provided on the side of the glue spraying seat close to the glue baffle.

[0019] By adopting the above-mentioned technical solution, the setting of the arc-shaped groove can guide the flow of the hot melt adhesive inside the adhesive area. The hot melt adhesive accumulated on both sides can return to the middle of the adhesive area under the guidance of the arc-shaped groove and be discharged from the adhesive outlet channel, which is beneficial to reduce the accumulation and solidification of the hot melt adhesive and the occurrence of blockage inside the adhesive area.

[0020] Optionally, a heating component for heating and heat preservation is provided on the side of the glue spraying seat close to the glue baffle, and the heating component includes a heat conducting plate embedded in the side of the glue spraying seat and a heating tube for supplying heat to the heat conducting plate.

[0021] By adopting the above technical solution, the heating tube can generate heat and conduct it to the heat conduction plate when powered on. After the temperature of the heat conduction plate rises, it can insulate the hot melt adhesive liquid inside the adhesive liquid area, thereby reducing the occurrence of the hot melt adhesive liquid solidifying and clogging inside the adhesive liquid area.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. By controlling the fine-tuning mechanism to force the guide mechanism to move, the two glue baffles can be moved closer or further away from each other, quickly and conveniently adjusting the width of the glue outlet channel. This allows for precise control of the thickness of the glue layer applied to the fabric surface, adapting to gluing operations on different fabric types.

[0024] 2. By setting up a sealing plate so that it normally covers the translation groove, the glue area can be well sealed, so that the molten hot melt glue can only flow out through the glue outlet channel, reducing the possibility of hot melt glue overflowing from the translation groove to the outside of the side guard plate;

[0025] 3. By setting up the arc-shaped groove, the flow of the hot melt adhesive inside the glue area can be guided. The hot melt adhesive accumulated on both sides can return to the middle of the glue area under the guidance of the arc-shaped groove and be discharged from the glue outlet channel, which is beneficial to reduce the accumulation and solidification of the hot melt adhesive and the occurrence of blockage inside the glue area. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the overall structure of this embodiment;

[0027] Figure 2 1 is a schematic diagram of a half-section structure of the spraying mechanism in this embodiment;

[0028] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0029] Figure 4 Schematic diagram of the structure of the side end surface of the spraying mechanism in this embodiment;

[0030] Figure 5 2 is a schematic structural diagram of the inner side of the side guard plate in this embodiment.

[0031] Explanation of the accompanying drawings: 1. Device frame; 2. Coating roller; 3. Glue spray seat; 31. Arc-shaped groove; 32. Mounting hole; 33. First inclined portion; 34. Dovetail groove; 4. Glue baffle; 41. Glue area; 42. Glue outlet channel; 43. Second inclined portion; 431. Dovetail block; 44. Extended boss; 5. Side guard plate; 51. Translation groove; 6. Glue spray nozzle; 61. Glue delivery pipe; 7. Guide mechanism; 71. Guide plate; 711. Strip groove; 712. Sealing baffle; 72. Horizontal guide column; 8. Fine-tuning mechanism; 81. Linear rack; 82. Rotating gear; 9. Heating component; 91. Heat conduction plate. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-5 This application is described in further detail.

[0033] The embodiment of the present application discloses a hot melt adhesive spraying device for laminating elastic decorative fabrics.

[0034] Reference Figure 1 A hot melt adhesive spraying device for elastic decorative fabric composite includes a device frame 1, a coating roller 2 and a spraying mechanism. The coating roller 2 is rotatably mounted on the device frame 1 and is used to tension the fabric and drive the fabric forward; the spraying mechanism is installed on the device frame 1 and is located outside the coating roller 2, and is used to evenly coat the hot melt adhesive liquid on the surface of the fabric.

[0035] The spraying mechanism includes a spraying seat 3, a glue baffle 4 and a side guard plate 5. The spraying seat 3 is fixedly mounted on the device frame 1 and is located outside the coating roller 2; Figure 2 The side of the glue spraying base 3 near the coating roller 2 is provided with an arcuate groove 31. The inner side of the arcuate groove 31 is provided with multiple mounting holes 32. Each mounting hole 32 extends through the side of the glue spraying base 3 away from the coating roller 2 and is evenly spaced along the extension of the glue spraying base 3. A glue nozzle 6 is mounted within each mounting hole 32, with the glue outlet facing the coating roller 2. The distal end of each glue nozzle 6 is connected to a glue delivery pipe 61 for delivering hot melt adhesive to the nozzle 6.

[0036] There are two glue baffles 4, which are respectively arranged on both sides of the glue spraying seat 3 in the width direction, and each glue baffle 4 is slidably set on the glue spraying seat 3 through an inclined guide structure; in the initial state, the two glue baffles 4 can maintain a spacing and form a glue outlet channel 42, and a glue liquid area 41 is jointly formed between the two glue baffles 4 and the glue spraying seat 3. After the glue nozzle 6 sprays the hot melt glue in a molten state into the glue liquid outlet area 41, the hot melt glue is filled in the glue liquid area 41, and the internal pressure can be used subsequently to make the hot melt glue leave through the glue outlet channel 42 and be coated on the surface of the fabric.

[0037] Also refer to Figure 3 The inclined guide structure includes a first inclined portion 33 and a second inclined portion 43. The first inclined portion 33 is arranged at the side edge of the glue spraying seat 3 in the width direction and is obtained by cutting. The first inclined portion 33 can be inclined in the direction close to the glue outlet channel 42; in addition, a dovetail groove 34 is provided on the side of the first inclined portion 33, and a dovetail block 431 is provided on the inner side of the second inclined portion 43. The dovetail block 431 is inserted into the dovetail groove 34 and can slide along the extension direction of the dovetail groove 34, thereby realizing a sliding connection between the glue baffle 4 and the glue spraying seat 3.

[0038] Reference Figure 4There are two side guard plates 5, which are respectively fixed on both sides of the extension direction of the glue spraying seat 3 to keep the glue area 41 closed; a guide mechanism 7 is provided between each side guard plate 5 and the two glue baffles 4 to force the two glue baffles 4 to approach each other / move away from each other.

[0039] Also refer to Figure 5 The guide mechanism 7 includes a guide plate 71 and a cross guide column 72. The side guard plate 5 is provided with a translation groove 51. The guide plate 71 is movably arranged inside the translation groove 51, and the moving direction of the guide plate 71 is the same as the opening direction of the glue outlet channel 42; the outer side surface of the guide plate 71 is provided with an integrally formed sealing plate 712, which covers the translation groove 51, and when the guide plate 71 moves in the translation groove 51, the sealing plate 712 can always cover the translation groove 51, thereby keeping the glue area 41 sealed.

[0040] Reference Figure 5 The side of the guide plate 71 near the glue liquid area 41 is provided with a strip groove 711, and the extension direction of the strip groove 711 is perpendicular to the movement direction of the guide plate 71. An extension boss 44 is fixed to the side of each glue baffle 4, and the extension boss 44 is integrally formed with the glue baffle 4. Two adjacent extension bosses 44 are movably disposed within the strip groove 711, and the outer diameter of the extension boss 44 is set to be equal to the width of the strip groove 711. When the guide plate 71 moves within the translation groove 51, the inner wall of the strip groove 711 can abut against the extension boss 44 and force the glue baffle 4 to move. The oblique guide structure between the glue baffle 4 and the glue spraying seat 3 can also force the glue baffle 4 to move closer to or farther from each other.

[0041] Back to Figure 4 The transverse guide post 72 is fixedly connected to the sealing plate 712 on the outer side of the guide plate 71. The transverse guide post 72 is slidably connected to the side guard plate 5. The sliding direction of the transverse guide post 72 is the same as the opening direction of the glue outlet channel 42. The sliding connection between the transverse guide post 72 and the side guard plate 5 is similar to the sliding connection between the glue baffle 4 and the glue spray seat 3, and will not be further described here. A fine-tuning mechanism 8 is installed on the outer side of one of the side guard plates 5. By controlling the fine-tuning mechanism 8, the transverse guide post 72 and the guide plate 71 can be forced to move.

[0042] Specifically, the fine-tuning structure includes a linear rack 81 fixed to the bottom of the cross guide column 72 and a rotating gear 82 rotatably installed on the outer side of the side guard plate 5. The rotating gear 82 and the linear rack 81 are engaged with each other for transmission. By turning the rotating gear 82, the cross guide column 72 and the guide plate 71 can be forced to move together. When the guide plate 71 moves, it can drive the two rubber baffles 4 to move closer to / away from each other, thereby quickly adjusting the width of the glue outlet channel 42.

[0043] In addition, back to Figure 2 A heating component 9 is also provided on the side of the glue spray seat 3 close to the baffle plate, which is used to heat and keep the hot melt glue inside the glue area 41 warm; wherein, the heating component 9 includes a heat conducting plate 91 embedded in the inner end wall of the arc-shaped groove 31 and a heating tube 92 connected to the back of the heat conducting plate 91. When the heating tube 92 is working, it can generate heat and conduct it to the heat conducting plate 91, thereby providing heat for the heat conducting plate 91.

[0044] The implementation principle of a hot melt adhesive spraying device for elastic decorative fabric lamination in the embodiment of the present application is as follows:

[0045] When the hot melt adhesive spraying device of the present application is in use, the molten hot melt adhesive enters the glue liquid area 41 through the glue spraying seat 3. The internal pressure causes the hot melt adhesive to flow out of the glue outlet channel 42 between the two glue baffles 4, thereby being applied to the surface of the fabric. The glue baffles 4 are slidably mounted on the glue spraying seat 3 via an inclined guide structure. The operator can force the cross guide column 72 and the guide plate 71 to move together by turning the rotating gear 82. When the guide plate 71 moves, the inner wall of the strip groove 711 can abut against the extended protrusion 44 and drive the two glue baffles 4 toward or away from each other, thereby enabling the width of the glue outlet channel 42 to be quickly and conveniently adjusted, and the thickness of the glue layer applied to the fabric surface to be precisely controlled to adapt to the gluing operation of different types of fabrics.

[0046] The above are preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A hot melt adhesive spraying device for elastic decorative fabric lamination, characterized by: The invention comprises a coating roller (2) for conveying fabric and a spraying mechanism arranged outside the coating roller (2), wherein the spraying mechanism comprises a glue spraying seat (3), two glue baffles (4) and two side guard plates (5), wherein the glue baffles (4) are slidably arranged on the glue spraying seat (3) via an inclined guide structure, and in an initial state, the two glue baffles (4) are spaced apart and form a glue outlet channel (42), and a glue liquid area (41) is formed between the two glue baffles (4) and the glue spraying seat (3); The two side guard plates (5) are respectively fixed to two opposite side surfaces of the glue spraying seat (3); a guide mechanism (7) is provided between each side guard plate (5) and the two glue baffle plates (4) for forcing the two glue baffle plates (4) to move closer to each other or further away from each other; a fine adjustment mechanism (8) for forcing the guide mechanism (7) to move is installed on the side surface of one of the side guard plates (5).

2. The hot melt adhesive spraying device according to claim 1, characterized in that: The inclined guide structure comprises a first inclined portion (33) provided on the glue spraying seat (3) and a second inclined portion (43) provided on the glue baffle (4), wherein the first inclined portion (33) is inclined in a direction close to the glue outlet channel (42); a dovetail groove (34) is provided on a side surface of the first inclined portion (33), and a dovetail block (431) is provided on a side surface of the second inclined portion (43) and is adapted to slide with the dovetail groove (34).

3. The hot melt adhesive spraying device according to claim 2, characterized in that: The side guard plate (5) is provided with a translation groove (51), and the guide mechanism (7) includes a guide plate (71) and a transverse guide column (72) integrally formed on the side of the guide plate (71), the transverse guide column (72) is slidably connected to the side guard plate (5), and the moving direction of the transverse guide column (72) is the same as the opening direction of the glue outlet channel (42); The guide plate member (71) is movably arranged inside the translation groove (51), and the guide plate member (71) is provided with a strip groove (711), and the extension direction of the strip groove (711) is arranged perpendicular to the movement direction of the transverse guide column (72); an extension convex column (44) is fixed on the side surface of each of the rubber baffle plates (4), and two adjacent extension convex columns (44) are movably arranged together inside the strip groove (711).

4. The hot melt adhesive spraying device according to claim 3, characterized in that: The fine-tuning mechanism (8) comprises a linear rack (81) fixed to the transverse guide column (72) and a rotating gear (82) rotatably mounted on the side guard plate (5), wherein the rotating gear (82) and the linear rack (81) are meshed with each other for transmission.

5. The hot melt adhesive spraying device according to claim 3, characterized in that: The outer peripheral sides of the guide plate members (71) are respectively provided with sealing plates (712), and the sealing plates (712) normally cover the translation grooves (51).

6. The hot melt adhesive spraying device according to claim 1, characterized in that: An arc-shaped groove (31) is provided on the side of the glue spraying seat (3) close to the glue baffle (4).

7. The hot melt adhesive spraying device according to claim 1, characterized in that: A heating component (9) for heating and heat preservation is provided on the side of the glue spraying seat (3) close to the glue baffle (4), and the heating component (9) includes a heat conducting plate (91) embedded in the side of the glue spraying seat (3) and a heating pipe (92) for supplying heat to the heat conducting plate (91).

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