Production line of hot melt adhesive assembly with tearable release paper

Abstract

The utility model relates to a production line of a hot melt adhesive component with tearable release paper, the hot melt adhesive component sequentially comprises a release paper layer, a hot melt adhesive layer and a protective surface layer, and the production line is arranged based on a high-speed rotating die-cutting machine. The production line sequentially comprises a first composite roller set, a second composite roller set, a third composite roller set, a first die cutting roller set, a second die cutting roller set, a fourth composite roller set and a third die cutting roller set which are arranged in the running direction of a main line, wherein an upper pressing roller of the third composite roller set is a hot pressing roller; an upper knife roll of the first die cutting roll set is provided with a pre-broken line cutting edge in a discontinuous dotted line shape, and the depth of the blade point of the pre-broken line cutting edge exactly penetrates through the release paper material belt in a cutting mode. According to the production line, the high-speed rotating die-cutting machine is adopted, the production of the hot melt adhesive assembly with the release paper capable of being torn is realized by matching with the simplest compounding and die-cutting roller group, and compared with the existing flat cutter production equipment of the hot melt adhesive assembly with the release paper capable of being torn, the production efficiency and the product precision are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of die-cutting components for electronic products, in particular to a production line of hot-melt adhesive components with tearable release paper. Background Art

[0002] The increasingly sophisticated designs and dimensional requirements of electronic products like computers, mobile phones, and tablets are driving demand for the various composite die-cut components used within them. Hot-melt adhesive components with removable release paper, used in some applications, are primarily produced using flat-blade die-cutting, which is inefficient. Alternatively, high-speed rotary die-cutters are used, but these require numerous composite and die-cutting roller sets, making operation more complex and leaving room for improvement in both efficiency and quality. Utility Model Content

[0003] The purpose of the utility model is to provide a production line of hot melt adhesive components with tearable release paper in response to the assembly needs of electronic components inside a tablet computer.

[0004] The technical solution adopted by the utility model is: a production line of a hot melt adhesive assembly with a tearable release paper, the hot melt adhesive assembly sequentially including a release paper layer, a hot melt adhesive layer and a protective surface layer, the production line is based on a high-speed rotary die-cutting machine, and the production line sequentially includes a first composite roller group, a second composite roller group, a third composite roller group, a first die-cutting roller group, a second die-cutting roller group, a fourth composite roller group, and a third die-cutting roller group arranged along the main line running direction, wherein the upper pressure roller of the third composite roller group is a hot pressure roller;

[0005] The production line also includes a release paper feed roller, a first process protective film feed roller, a bottom film feed roller, a bottom film take-up roller, a second process protective film feed roller, and a second process protective film take-up roller, which are arranged below the main line; a hot melt adhesive waste film take-up roller, a hot melt adhesive feed roller, a hot pressing face paper feed roller, a hot pressing face paper take-up roller, a first die-cutting waste material take-up roller, a waste tape discharge roller, a waste tape discharge roller, and a protective face paper feed roller, which are arranged above the main line;

[0006] Among them, the upper knife roller of the first die-cutting roller group is provided with a closed contour line blade that just cuts through the release paper material strip and forms the outer contour of the release paper layer, and a hot melt adhesive contour line blade that just cuts through the hot melt adhesive material strip and forms the outer contour of the hot melt adhesive layer. In addition, a pre-breaking blade in the shape of an intermittent dotted line is also provided on the upper knife roller of the first die-cutting roller group outside the hot melt adhesive contour line blade. The blade depth of the pre-breaking blade is just enough to cut through the release paper material strip; a plurality of positioning hole blades are also provided on the outside of the pre-breaking blade. The blade depth of the positioning hole blade is just enough to cut through the first process protective film material strip and form a plurality of positioning holes on the release paper material strip.

[0007] The second die-cutting roller group is provided with a plurality of extraction blades, and the extraction blades are distributed at intervals in an area corresponding to the inner side area of ​​the hot melt adhesive contour line blade.

[0008] In the above-mentioned production line, the closed contour blade of the upper cutting roller of the first die-cutting roller group is rectangular in its unfolded diagram; the hot melt adhesive contour blade is unfolded in its unfolded diagram, comprising a pair of parallel straight blades and quarter-circle arc blades connected to both ends of the pair of parallel straight blades, with the endpoints of the quarter-circle arc blades located on one of the long edges of the closed contour blade, constituting the red portion of the blade line in the diagram;

[0009] In the above production line, the upper knife roller of the first die-cutting roller group is further provided with a first positioning mark line blade and a blade without a blade edge and an indentation; the upper knife roller of the second die-cutting roller group is provided with a second positioning mark line blade corresponding to the position of the first positioning mark line blade;

[0010] In the above production line, the first process protective film material strip discharged by the first process protective film discharge roller below and the release paper material strip discharged by the release paper discharge roller are compounded by the first composite roller group, and then compounded with the hot melt adhesive material strip discharged by the upper hot melt adhesive discharge roller through the second composite roller group, and the waste film on the hot melt adhesive material strip is wound up by the hot melt adhesive waste film receiving roller; that is, after passing through the second composite roller group, a composite material strip is formed from bottom to top in the order of: protective film material strip, release paper material strip, and hot melt adhesive material strip; the hot pressing surface paper discharge roller above discharges the hot melt adhesive material strip. The pressing paper, hot melt adhesive tape, release paper tape and protective film tape are compounded and hot pressed by the third compound roller group, and then the hot pressed paper is peeled off. That is, after passing through the third compound roller group, a composite tape is formed from bottom to top: protective film tape, release paper tape, and hot pressed hot melt adhesive tape; the bottom film discharged by the bottom film discharge roller is compounded and die-cut from the bottom of the protective film tape through the first die-cutting roller group; the bottom film receiving roller rewinds the bottom film tape and positioning hole waste coming out of the first die-cutting roller group; the first die-cutting waste receiving roller rewinds the waste from the first die-cutting roller group. The waste materials outside the release paper frame and the hot melt adhesive waste outside the frame come out of the die-cutting roller group; the waste tape discharged by the waste tape discharge roller is compounded with the material tape coming out of the first die-cutting roller group through the second die-cutting roller group and die-cut; the waste tape take-up roller rewinds the waste tape coming out of the second die-cutting roller group and the extracted hot melt adhesive waste inside the frame; the protective surface paper material tape discharged by the protective surface paper discharge roller and the second process protective film material tape discharged by the second process protective film discharge roller are compounded with the material tape coming out of the second die-cutting roller group from the top and bottom respectively through the fourth compounding roller group; The material strips coming out of the fourth composite roller group are, from bottom to top, the second process protective film strip, the first process protective film strip, the release paper layer, the hot melt adhesive layer, and the protective surface paper strip; the release paper layer and the hot melt adhesive layer are transferred to the protective surface paper strip through the fourth composite roller group, and finally cut by the third die-cutting roller group, and the blade of the third die-cutting roller group cuts the protective surface paper strip, and finally the second process protective film strip and the first process protective film strip are peeled off from the bottom and reeled up by the second process protective film receiving roller; and the products fall into the collection box one by one.

[0011] In the above production line, the upper knife roller of the first die-cutting roller group is provided with two sets of blade units, and correspondingly, the upper knife roller of the second die-cutting roller group is also provided with two sets of extraction blade units; that is, two sets of products can be produced in one cycle.

[0012] The production line of this utility model adopts a high-speed rotary die-cutting machine, which is matched with the simplest compound and die-cutting roller group to realize the production of hot melt adhesive components with tearable release paper. Compared with the existing flat knife production equipment of hot melt adhesive components with tearable release paper, the production efficiency and product precision are greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is an exploded schematic diagram of the products produced by the production line of the utility model;

[0014] Figure 2 This is a schematic diagram of the composition of the production line of the utility model and the operation of the membrane material thereon;

[0015] Figure 3 This is a schematic diagram of the expansion of the blade of the first die-cutting roller group in the production line of the utility model;

[0016] Figure 4 This is a schematic diagram of the expansion of the blade of the second die-cutting roller group in the production line of the utility model;

[0017] Figure 5 It is a schematic diagram of the superposition of the die-cutting effects of the first die-cutting roller group and the second die-cutting roller group. DETAILED DESCRIPTION

[0018] like Figure 1-Figure 5 As shown, the utility model describes a production line for a hot melt adhesive assembly with a tearable release paper, the hot melt adhesive assembly sequentially comprising a release paper layer 1, a hot melt adhesive layer 2, and a protective surface layer 3. The production line is based on a high-speed rotary die-cutting machine, and the production line sequentially comprises a first composite roller group F1, a second composite roller group F2, a third composite roller group F3, a first die-cutting roller group M1, a second die-cutting roller group M2, a fourth composite roller group F4, and a third die-cutting roller group M3, arranged along the main line running direction, wherein the upper pressure roller of the third composite roller group F3 is a hot pressure roller;

[0019] The production line also includes a release paper discharge roller G1, a first process protective film discharge roller G2, a bottom film discharge roller G3, a bottom film take-up roller G4, a second process protective film discharge roller G5, and a second process protective film take-up roller G6, which are arranged below the main line; a hot melt adhesive waste film take-up roller G7, a hot melt adhesive discharge roller G8, a hot pressing face paper discharge roller G9, a hot pressing face paper take-up roller G10, a first die-cutting waste material take-up roller G11, a waste tape discharge roller G12, a waste tape discharge roller G13, and a protective face paper discharge roller G14, which are arranged above the main line;

[0020] Among them, the upper knife roller of the first die-cutting roller group M1 is provided with a closed contour line blade M101 that just cuts through the release paper material strip a1 and forms the outer contour of the release paper layer 1, and a hot melt adhesive contour line blade M102 that just cuts through the hot melt adhesive material strip a2 and forms the outer contour of the hot melt adhesive layer 2. In addition, a pre-cutting line blade M103 in the shape of an intermittent dotted line is also provided on the upper knife roller of the first die-cutting roller group M1 on the outside of the hot melt adhesive contour line blade M102. The spacing between the pre-cutting line blades M103 is 0.5 mm. -1mm, the blade depth of the pre-breaking blade M103 just cuts through the release paper material strip a1, thereby forming a dotted pre-breaking line 11 on the release paper layer 1. The pre-breaking line 11 divides the formed release paper layer 1 into two tearable parts, thereby forming a hot melt adhesive component of the tearable release paper; a plurality of positioning hole blades M104 are also provided on the outer side of the pre-breaking blade M103. The blade depth of the positioning hole blade M104 just cuts through the first process protective film material strip and forms a plurality of positioning holes 12 on the release paper material strip a1. The positioning holes 12 are used for positioning when using the hot melt adhesive component so that the hot melt adhesive is in the correct position;

[0021] The second die-cutting roller group M2 is provided with a plurality of extraction blades M201 , which are spaced apart in an area corresponding to the inner area of ​​the hot melt adhesive contour line blade M102 so as to extract the hot melt adhesive waste inside the hot melt adhesive contour line.

[0022] In the above production line, the closed contour blade M101 of the upper cutter roller of the first die-cutting roller group M1 is rectangular in its unfolded form. The hot melt adhesive contour blade M102 is unfolded to form a pair of parallel straight blades and a quarter-circular arc blade connected to each end of the pair of parallel straight blades. The endpoints of the quarter-circular arc blades are located on one of the long edges of the closed contour blade, forming the red blade line in the figure.

[0023] In the above production line, the upper cutter roller of the first die-cutting roller group M1 is further provided with a first positioning mark line blade M105 and a blade without a blade edge and an indentation M106; the upper cutter roller of the second die-cutting roller group M2 is provided with a second positioning mark line blade M202 corresponding to the position of the first positioning mark line blade M105;

[0024] In the above production line, the first process protective film strip b1 discharged from the first process protective film discharge roller G2 at the bottom and the release paper strip a1 discharged from the release paper discharge roller G1 are compounded by the first compound roller group F1, and then compounded with the hot melt adhesive strip a2 discharged from the hot melt adhesive discharge roller G8 at the top through the second compound roller group F2. The waste film on the hot melt adhesive strip a2 is wound up by the hot melt adhesive waste film take-up roller G7. That is, after passing through the second compound roller group F2, a composite strip is formed, from bottom to top, consisting of: the first process protective film strip b1, the release paper strip a1, and the hot melt adhesive strip a2.

[0025] The hot-pressed face paper strip b2 discharged by the upper hot-pressed face paper unloading roller G9 is combined with the hot-melt adhesive strip a2, the release paper strip a1, and the protective film strip b1 through the third composite roller group F3, where it is hot-pressed and then the hot-pressed face paper strip b2 is peeled off. That is, after passing through the third composite roller group F3, the composite material strip is formed from bottom to top in the following order: the first process protective film strip b1, the release paper strip a1, and the hot-pressed hot-melt adhesive strip a2.

[0026] The bottom film strip b3 discharged by the bottom film discharge roller G3 is compounded and die-cut from the bottom of the protective film strip b1 through the first die-cutting roller group M1; the bottom film receiving roller G4 rewinds the bottom film strip b3 and the positioning hole waste coming out of the first die-cutting roller group M1; the first die-cutting waste receiving roller G11 rewinds the release paper frame waste and the hot melt adhesive waste outside the frame coming out of the first die-cutting roller group M1; the waste tape b4 discharged by the waste tape discharge roller G12 is compounded and die-cut with the material strip coming out of the first die-cutting roller group M1 through the second die-cutting roller group M2; the waste tape ... The material roller G13 rewinds the waste tape discharged from the second die-cutting roller group M2 and the extracted hot melt adhesive waste in the frame; the protective paper material strip a3 discharged from the protective paper discharge roller G14 and the second process protective film material strip b5 discharged from the second process protective film discharge roller G5 are respectively combined from top to bottom with the material strip discharged from the second die-cutting roller group M2 through the fourth composite roller group F4. The material strips discharged from the fourth composite roller group F4 are, from bottom to top, the second process protective film material strip b5, the first process protective film material strip b1, the release paper layer 1, the hot melt adhesive layer 2, and the protective paper material strip a3;

[0027] The release paper layer 1 and the hot-melt adhesive layer 2 are transferred to the protective surface paper strip a3 by the fourth composite roller group F4, and finally cut by the third die-cutting roller group M3. The blade of the third die-cutting roller group M3 cuts the protective surface paper strip a3, and finally the second process protective film strip b5 and the first process protective film strip b1 are peeled off from the bottom and rewound by the second process protective film take-up roller G6; the products fall into the collection box one by one.

[0028] In the above production line, two sets of blade units are provided on the upper knife roller of the first die-cutting roller group M1, and the two sets of blade units are arranged in a centrally symmetrical manner. Correspondingly, two sets of extraction blade units are also provided on the upper knife roller of the second die-cutting roller group M2; that is, two sets of products can be produced in one cycle of operation.

[0029] The production line of this utility model adopts a high-speed rotary die-cutting machine, which is matched with the simplest compound and die-cutting roller group to realize the production of hot melt adhesive components with tearable release paper. Compared with the existing flat knife production equipment of hot melt adhesive components with tearable release paper, the production efficiency and product precision are greatly improved.

[0030] The above embodiments are merely exemplary embodiments for illustrating the principles of the present invention, but the present invention is not limited thereto. Those skilled in the art may make various modifications and improvements without departing from the spirit and essence of the present invention, and such modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A production line for hot melt adhesive components with tearable release paper, the hot melt adhesive components sequentially comprising a release paper layer, a hot melt adhesive layer, and a protective surface layer, the production line being based on a high-speed rotary die-cutting machine, characterized in that: The production line includes a first composite roller group, a second composite roller group, a third composite roller group, a first die-cutting roller group, a second die-cutting roller group, a fourth composite roller group, and a third die-cutting roller group, which are arranged in sequence along the main line running direction, wherein the upper pressing roller of the third composite roller group is a hot pressing roller; The production line also includes a release paper feed roller, a first process protective film feed roller, a bottom film feed roller, a bottom film take-up roller, a second process protective film feed roller, and a second process protective film take-up roller, which are arranged below the main line; a hot melt adhesive waste film take-up roller, a hot melt adhesive feed roller, a hot pressing face paper feed roller, a hot pressing face paper take-up roller, a first die-cutting waste material take-up roller, a waste tape discharge roller, a waste tape discharge roller, and a protective face paper feed roller, which are arranged above the main line; Among them, the upper knife roller of the first die-cutting roller group is provided with a closed contour line blade that just cuts through the release paper material strip and forms the outer contour of the release paper layer, and a hot melt adhesive contour line blade that just cuts through the hot melt adhesive material strip and forms the outer contour of the hot melt adhesive layer. In addition, a pre-breaking blade in the shape of an intermittent dotted line is also provided on the upper knife roller of the first die-cutting roller group outside the hot melt adhesive contour line blade. The blade depth of the pre-breaking blade is just enough to cut through the release paper material strip; a plurality of positioning hole blades are also provided on the outside of the pre-breaking blade. The blade depth of the positioning hole blade is just enough to cut through the first process protective film material strip and form a plurality of positioning holes on the release paper material strip. The second die-cutting roller group is provided with a plurality of extraction blades, and the extraction blades are distributed at intervals in an area corresponding to the inner side area of ​​the hot melt adhesive contour line blade.

2. The production line of hot melt adhesive assembly with tearable release paper according to claim 1, characterized in that: The expanded view of the closed contour line blade of the upper cutting roller of the first die-cutting roller group is rectangular; the expanded view of the hot melt adhesive contour line blade includes a pair of parallel straight line blades and 1 / 4 arc blades connected to the two ends of the pair of parallel straight line blades, and the outer end point of the 1 / 4 arc blade is located on a long side blade of the closed contour line blade.

3. The production line of hot melt adhesive assembly with tearable release paper according to claim 1, characterized in that: The upper knife roller of the first die-cutting roller group is also provided with a first positioning mark line blade and a blade without blade edge indentation; the upper knife roller of the second die-cutting roller group is provided with a second positioning mark line blade corresponding to the position of the first positioning mark line blade.

4. The production line of hot melt adhesive assembly with tearable release paper according to claim 1, characterized in that: The first process protective film strip discharged by the first process protective film discharge roller below and the release paper strip discharged by the release paper discharge roller are compounded by the first compound roller group, and then compounded with the hot melt adhesive strip discharged by the upper hot melt adhesive discharge roller through the second compound roller group, and the waste film on the hot melt adhesive strip is wound up by the hot melt adhesive waste film receiving roller; the hot pressing paper discharged by the upper hot pressing paper discharge roller is compounded and hot-pressed with the hot melt adhesive strip, the release paper strip and the protective film strip through the third compound roller group and then peeled off the hot pressing paper; the bottom film discharged by the bottom film discharge roller is compounded and die-cut from the bottom of the protective film strip through the first die-cutting roller group; the bottom film receiving roller winds up the bottom film strip and the positioning hole waste coming out of the first die-cutting roller group; the first die-cutting waste receiving roller winds up the waste outside the release paper frame coming out of the first die-cutting roller group The material and hot melt adhesive waste outside the frame; the waste tape discharged by the waste tape discharge roller is compounded and die-cut by the second die-cutting roller group above the material tape coming out of the first die-cutting roller group; the waste tape take-up roller rewinds the waste tape coming out of the second die-cutting roller group and the extracted hot melt adhesive waste in the frame; the protective surface paper material tape discharged by the protective surface paper discharge roller and the second process protective film material tape discharged by the second process protective film discharge roller are respectively compounded from the top and bottom with the material tape coming out of the second die-cutting roller group through the fourth composite roller group; the release paper layer and the hot melt adhesive layer are transferred to the protective surface paper material tape by the fourth composite roller group, and finally cut by the third die-cutting roller group, the blade of the third die-cutting roller group cuts the protective surface paper material tape, and finally the second process protective film material tape and the first process protective film material tape are peeled off from the bottom and rewound by the second process protective film take-up roller.

5. The production line of hot melt adhesive assembly with tearable release paper according to claim 1, characterized in that: The upper knife roller of the first die-cutting roller group is provided with two sets of blade units, and correspondingly, the upper knife roller of the second die-cutting roller group is also provided with two sets of extraction blade units.

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