A method for producing aluminum-plastic composite panels for embedded light strips

Abstract

The present invention discloses a production method of aluminum-plastic composite panels for embedded light strips, comprising the following steps: step S1: obtaining an aluminum-plastic composite panel strip after thermal composite forming; step S2: continuously opening a first groove on the surface aluminum plate on the surface of the aluminum-plastic composite panel strip in motion, exposing the surface of the core plate below the surface aluminum plate; step S3: continuing along the first groove, hollowing out the core plate below, continuously opening a second groove, exposing the surface of the bottom aluminum plate below the core plate; step S4: continuing to move back and forth and press down the hanging part of the surface aluminum plate located on the second groove in sections, so that the hanging part is bent section by section according to a fixed length to fit the cross section of the core plate, thereby forming a lamp trough structure on the aluminum-plastic composite panel strip over the entire length. The present invention realizes the online processing of the lamp trough on the aluminum-plastic composite panel strip, reduces the secondary processing burden of cabinet furniture companies, and is visually neater and more beautiful.

Description

Technical Field

[0001] The invention relates to the technical field of material processing, and in particular to a method for producing an aluminum-plastic composite board for an embedded light bar. Background Art

[0002] Recently, the architectural decoration industry has begun to popularize simple and light luxury styles, and a large number of lamps have been installed in cabinet furniture to make the cabinet brighter and more convenient to take items. There are more and more styles of lamps in the development of cabinet furniture, which have evolved from the previous way of installing a small lamp in the cabinet to the current way of installing a lamp on each shelf. The installation method of lamps is generally embedded to increase the aesthetics.

[0003] The conventional installation method of embedded light strips is to make grooves on the surface of the board of the cabinet furniture, then apply fixing glue around the grooves, and embed the aluminum alloy light troughs into them before the fixing glue dries. After the fixing glue dries, stick the back of the light strip on the aluminum trough, and finally cover it with a lampshade. The disadvantage of this method is that the board needs to be processed and grooved for a second time, and the aluminum alloy light trough is not firm enough to be fixed with glue, and the aluminum alloy light trough is a major accessory and it is difficult to omit it. At the same time, this method cannot maintain the overall unity and perfection of the building decoration surface, affecting the visual effect.

[0004] Aluminum-plastic composite panels are widely used in cabinet furniture panels due to their light weight, easy installation, good flatness, good weather resistance and rich colors. However, the problem is that embedded light strips cannot be directly installed on the aluminum-plastic composite panels, and only secondary processing by splicing can be used. This not only affects the overall appearance, but also increases the complexity of the process installation.

[0005] If aluminum-plastic composite panels with integrated lamp troughs are processed as needed before they leave the factory, the defect that embedded lamps cannot be directly installed when aluminum-plastic composite panels are used in cabinet furniture can be solved.

[0006] Therefore, it is necessary to design an online production technology for aluminum-plastic composite panels for embedded light strips. Summary of the invention

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a method for producing an aluminum-plastic composite board for an embedded light bar.

[0008] A technical solution of the present invention to achieve the above object is:

[0009] A method for producing an aluminum-plastic composite panel for an embedded light bar comprises the following steps:

[0010] Step S1: obtaining the aluminum-plastic composite board strip after thermal composite forming;

[0011] Step S2: continuously opening first grooves on the surface aluminum plate on the surface of the aluminum-plastic composite board strip in motion, exposing the surface of the core plate below the surface aluminum plate;

[0012] Step S3: Continue to hollow out the core plate below along the first groove, and continuously open a second groove to expose the surface of the bottom aluminum plate below the core plate;

[0013] Step S4: Continue to move the suspended portion of the surface aluminum plate on the second groove downward in sections, so that the suspended portion is bent in sections according to a fixed length to fit the cross-section of the core plate, thereby forming a lamp trough structure on the entire length of the aluminum-plastic composite board strip.

[0014] Furthermore, the step S2 specifically includes:

[0015] Taking the end of the moving aluminum-plastic composite board strip as the starting point, a straight milling cutter is used to perform rotary cutting on the surface aluminum plate, and a first groove is continuously opened on the surface aluminum plate along the direction of the production line to expose the surface of the core plate below the surface aluminum plate.

[0016] Furthermore, the step S3 specifically includes:

[0017] Continuing with the end of the moving aluminum-plastic composite board strip as the starting point, use a T-shaped milling cutter to perform rotary cutting and hollowing processing on the core board below along the notch of the first groove, and continuously open a second groove along the production line direction directly below the first groove to expose the surface of the bottom aluminum plate below the core plate, so that the part of the surface aluminum plate located on the second groove becomes a suspended part.

[0018] Furthermore, the step S4 specifically includes:

[0019] Continuing with the end of the moving aluminum-plastic composite board strip as the starting point, use an inverted trapezoidal punch to synchronously move back and forth and press down in sections, so that the hanging part is bent section by section according to the fixed length of the punch to a vertical state that fits the cross-section of the core board, and the end face of the hanging part is in contact with the surface of the underlying aluminum plate, thereby forming a lamp trough structure on the entire length of the aluminum-plastic composite board strip.

[0020] Further, a transverse width of the hanging portion on the second groove corresponds to a thickness of the core plate.

[0021] Furthermore, the step S1 specifically includes:

[0022] Step S11: obtaining a core plate strip that is continuously extruded and pre-shaped;

[0023] Step S13: sticking adhesive films on the upper and lower surfaces of the moving core strip respectively;

[0024] Step S15: laminating the surface layer aluminum plate strip and the bottom layer aluminum plate strip respectively on the upper and lower surfaces of the core plate strip which is in motion and has the adhesive film attached thereto;

[0025] Step S17: Continuously heat-compound and cool the bottom aluminum plate strip, the core plate strip and the surface aluminum plate strip to obtain an aluminum-plastic composite plate strip after heat-compounding.

[0026] Furthermore, step S14 is further included between step S13 and step S15:

[0027] The redundant edges of the core plate strip on which the adhesive film is pasted are continuously cut off so that the width of the core plate strip after the edge cutting corresponds to the width of the surface aluminum plate strip and the bottom aluminum plate strip.

[0028] Furthermore, the method further comprises step S5:

[0029] A protective film is formed on the surface of the traveling aluminum-plastic composite board strip having the lamp trough structure.

[0030] Furthermore, the method further comprises step S6:

[0031] The aluminum-plastic composite board strip with the protective film formed thereon is sheared to a predetermined length to obtain an aluminum-plastic composite board finished product with a lamp trough structure.

[0032] Furthermore, the method further comprises step S7:

[0033] The finished aluminum-plastic composite panel with the lamp trough structure is collected, stacked and packaged.

[0034] Compared with the prior art, the present invention has the following advantages:

[0035] (1) By sequentially performing the combined processing of the first groove, the second groove and the stamping and bending on the moving aluminum-plastic composite board strip, the original surface aluminum plate material on the aluminum-plastic composite board strip can be directly processed online to form a lamp trough structure for the embedded light strip, so that the lamp trough and the aluminum-plastic composite board surface are seamlessly combined, achieving the overall unity and perfection of the aluminum-plastic composite board decorative surface and the lamp body, which is more neat and beautiful visually.

[0036] (2) By processing lamp troughs on the aluminum-plastic composite board production line, the defect that the aluminum-plastic composite board cannot be directly installed with embedded lamp bodies when used in cabinet furniture is solved. Compared with the traditional decorative board that uses secondary processing to cut grooves and then fix the aluminum alloy lamp trough with glue, it not only enhances the overall firmness of the lighting facilities, but also saves aluminum alloy lamp trough materials, thus having great market potential.

[0037] (3) By using a straight milling cutter in conjunction with a T-type milling cutter, the first and second grooves can be processed on the entire length of the aluminum-plastic composite board strip. By using an inverted trapezoidal punch in conjunction with the belt speed for mobile continuous stamping and flanging, a good connection between the segmented stamping is achieved, successfully solving the problem of processing the lamp trough on the entire length of the aluminum-plastic composite board strip, avoiding the inconvenience of secondary processing of the aluminum-plastic composite board after being cut to a fixed length, shortening the processing cycle, and saving costs.

[0038] (4) By cutting the edge of the pre-formed core plate material online, the width of the core plate material after the edge cutting can be made to correspond to the width of the aluminum coil material used to form the surface aluminum plate and the bottom aluminum plate, thereby avoiding the subsequent overall edge trimming of the composite aluminum-plastic composite plate strip, and preventing the exposed core plate material from melting due to the excessively high temperature of the composite wheel during the hot composite bonding process, thereby preventing the exposed core plate material from bonding to the hot composite wheel and causing quality accidents. At the same time, it saves the loss of aluminum coils, improves material utilization, and saves production energy consumption for composite of excess materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 The present invention is a schematic diagram of a process flow and production equipment layout of a method for producing an aluminum-plastic composite panel for an embedded light strip according to a preferred embodiment of the present invention.

[0040] Figure 2 This is a schematic diagram of the working state of a preferred embodiment of the present invention when a cutting knife is used to trim the edge of a core board.

[0041] Figure 3 This is a schematic diagram of the working state of machining a first groove using a straight milling cutter according to a preferred embodiment of the present invention.

[0042] Figure 4 The figure is a schematic diagram of the working state when a T-shaped milling cutter is used to machine a second groove according to a preferred embodiment of the present invention.

[0043] Figure 5 The present invention is a schematic diagram of the working state of a preferred embodiment of the present invention when an inverted trapezoidal punch is used for bending and flanging.

[0044] Figure 6 The schematic diagram of the finished product structure of an aluminum-plastic composite panel for an embedded light strip produced by a method for producing an aluminum-plastic composite panel for an embedded light strip according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0045] In order to better understand the technical solution of the present invention, a detailed description is given below through specific embodiments.

[0046] A method for producing an aluminum-plastic composite panel for an embedded light bar of the present invention comprises the following steps:

[0047] Step S1: obtaining the aluminum-plastic composite board strip after thermal composite forming;

[0048] Step S2: continuously opening first grooves on the surface aluminum plate on the surface of the aluminum-plastic composite board strip in motion, exposing the surface of the core plate below the surface aluminum plate;

[0049] Step S3: Continue to hollow out the core plate below along the first groove, and continuously open a second groove to expose the surface of the bottom aluminum plate below the core plate;

[0050] Step S4: Continue to move the suspended portion of the surface aluminum plate on the second groove downward in sections, so that the suspended portion is bent in sections according to a fixed length to fit the cross-section of the core plate, thereby forming a lamp trough structure on the entire length of the aluminum-plastic composite board strip.

[0051] See also Figure 1 In a preferred embodiment, a method for producing an aluminum-plastic composite panel for an embedded light strip of the present invention may include the following process flows (steps) in sequence: extruding a core panel, applying an adhesive film, trimming the core panel, unwinding an aluminum coil, thermally laminating, cooling, processing a first groove, processing a second groove, moving the flanging, applying a protective film, cutting to length, and collecting the finished product.

[0052] Furthermore, the production method of the aluminum-plastic composite board for the embedded light bar of the present invention can be adopted Figure 1 The production equipment corresponding to each link of the above process flow realizes the production of an aluminum-plastic composite board for embedded light strips. The production equipment may include: an extrusion device 10, a film pasting device 11, a trimming device 12, a reeling device 13, a thermal composite device 14, a cooling device 15, a first grooving device 16, a second grooving device 17, a movable flanging device 18, a protective film pasting device 19, a driving traction device 20, a shearing sub-device 21, and a finished product collection device 22 arranged in sequence along the production line.

[0053] Among them, step S1 may include the extruded core board, adhesive film sticking, core board trimming, aluminum coil unwinding, thermal compounding, and cooling steps in the above process flow.

[0054] Among them, the core board extrusion process can specifically include:

[0055] Step S11: Obtaining a core plate strip that is continuously extruded and pre-shaped.

[0056] See also Figure 1An extrusion device 10 can be used to continuously extrude the core board material, for example, PE (polyethylene) plastic particles can be extruded to obtain a predetermined PE plastic core board. The predetermined PE plastic core board is finally shaped in the subsequent composite process with aluminum material to become a high-pressure low-density PE plastic core board.

[0057] The core board material may also be other commonly used fireproof core materials.

[0058] In a preferred embodiment, the extrusion device 10 may be an extruder.

[0059] The adhesive film pasting process may specifically include:

[0060] Step S13: Adhesive films are respectively attached to the upper and lower surfaces of the running core plate strip.

[0061] A film pasting device 11 can be used, including two film pasting machines, such as heat pasting machines, arranged on the upper and lower sides of the predetermined core board, for continuously pasting adhesive films on the upper and lower surfaces of the continuously extruded predetermined core board material.

[0062] The adhesive film may be, for example, a polymer adhesive film, which has excellent adhesive force when hot-melted.

[0063] The core board trimming process may specifically include:

[0064] Step S14: continuously cutting off the redundant edges of the core plate strip on which the adhesive film is pasted while in motion, so that the width of the core plate strip after the edge cutting corresponds to the width of the surface aluminum plate strip and the bottom aluminum plate strip.

[0065] See also Figure 2 In conjunction with Figure 1 In a preferred embodiment, a trimming device 12 can be used, which is arranged on both sides above the output core plate 232 strip after film lamination, and includes two cutters (edge ​​cutting knives) 121, which are used to perform online cutting of the edges of the core plate 232 material after pre-forming and film lamination, so that the width of the core plate 232 material after edge cutting corresponds to the width of the subsequent aluminum coil.

[0066] Affected by the production environment of thermal expansion and contraction and the vibration accuracy error of the equipment, the PE plastic core plate 232 extruded by the extruder requires the width of the extruded core plate 232 to be adjusted to about 20mm wider than the standard setting width, and the upper and lower polymer adhesive films are pasted by the film pasting wheel of the thermal pasting machine, and then cooled and shaped, and then thermally composited with the upper and lower aluminum coils of the next process. The purpose of adjusting the width of the extruded core plate 232 to 20mm wider than the standard setting width is to ensure that the upper and lower polymer adhesive films can be completely pasted to the surface of the plastic core plate 232 during the film pasting process.

[0067] Such conventional production process requires that the upper and lower aluminum coils in the subsequent process should also be loosened by 20mm to completely cover the plastic core plate 232 after bonding, so as to prevent the excessively high temperature of the composite wheel from melting the exposed PE plastic core plate 232 beyond the specification during the thermal composite bonding process, thereby causing the exposed PE core plate 232 to be bonded to the thermal composite wheel and cause quality accidents. However, the upper and lower aluminum coils that are loosened by 20mm must be sheared and wasted in the shearing process later, resulting in a waste of materials and energy consumption.

[0068] The characteristic of setting the trimming device 12 is that after the PE plastic core plate 232 is extruded by the extruder, the upper and lower polymer adhesive films are attached by the film attaching wheel of the heat attaching machine and then cooled and shaped, before the upper and lower aluminum coils are attached in the subsequent process, a set of trimming knife mechanisms that can adjust the distance and angle are installed to accurately cut the size of the core plate 232 to the standard size. In this way, the subsequent upper and lower aluminum coils can be bonded and laminated at high temperature using standard specifications and sizes. The advantage is that it not only saves the loss of aluminum coils, improves the material utilization rate, but also saves the production energy consumption of 20mm material composite.

[0069] In a preferred embodiment, the direction of the blade of the cutter 121 can be adjusted to an angle of 45 degrees to the opposite direction of the core plate 232, while ensuring that the blade can completely cut through the core plate 232.

[0070] The core board 232 is driven by the front pulling force on the core board 232 conveying shaft to move forward at a constant speed. The excess core boards 232 on both sides exceeding the standard set width are continuously and automatically cut off at the position of the cutter 121 and fall into the core board collection box for recovery.

[0071] In this way, the cut PE plastic core plate 232 and the subsequent upper and lower aluminum coils can be bonded and laminated at high temperature using standard specifications and sizes. In addition, the two side end surfaces of the trimmed PE plastic core plate 232 become smooth and flat.

[0072] The aluminum coil unwinding process can specifically include:

[0073] Step S15: The surface layer aluminum plate strip and the bottom layer aluminum plate strip are respectively attached to the upper and lower surfaces of the moving core plate strip with the adhesive film attached thereto.

[0074] See also Figure 1 A reeling device 13 may be used, including two reeling machines, such as a reeling machine, arranged on the upper and lower sides of the core plate 232 after the film is output, for unwinding (reeling) two aluminum coils to fit the upper and lower surfaces of the core plate 232 material, thereby forming a bottom aluminum plate 231 and a surface aluminum plate 233 on the upper and lower surfaces of the core plate 232 material (refer to Figure 3 ).

[0075] The thermal compounding and cooling stages may include:

[0076] Step S17: Continuously heat-compound and cool the bottom aluminum plate strip, the core plate strip and the surface aluminum plate strip to obtain an aluminum-plastic composite plate strip after heat-compounding.

[0077] See also Figure 1 A heat compounding device 14 can be used, including multiple sets of heat compounding wheels arranged on the upper and lower sides of the plate strip having a sandwich structure of a bottom aluminum plate 231, a core plate 232 and a surface aluminum plate 233 output after unwinding, for compounding the bottom aluminum plate 231, the core plate 232 and the surface aluminum plate 233 through an adhesive film by heating to form an aluminum-plastic composite plate strip 23 (reference Figure 5 ).

[0078] A cooling device 15 including a plurality of fans arranged in a box body can be used to cool the output hot aluminum-plastic composite board strip 23 from the upper and lower sides to form the aluminum-plastic composite board strip 23 after final shaping.

[0079] Among them, a plate chain conveying device can also be provided between the cooling device 15 , the first slotting device 16 , the second slotting device 17 and the movable flanging device 18 .

[0080] In a preferred embodiment, the plate chain conveying device may include a plate chain conveyor, which is provided with a plurality of power rollers in parallel and driven by the power rollers for conveying the aluminum-plastic composite board strip 23.

[0081] In a preferred embodiment, multiple plate chain conveying devices can be configured, which can be set not only on the production line between the cooling device 15, the first slotting device 16, the second slotting device 17 and the mobile flanging device 18, but also on other necessary stations of the production line, such as between the film pasting device 11 and the unwinding device 13, between the thermal composite device 14 and the cooling device 15, between the mobile flanging device 18 and the protective film pasting device 19, between the shearing sub-device 21 and the finished product receiving device 22, etc. In addition, each plate chain conveying device can be synchronously driven or individually driven.

[0082] The first groove processing step may specifically include:

[0083] Step S2: starting from the end of the moving aluminum-plastic composite board strip, using a straight milling cutter, rotary cutting the surface aluminum plate, continuously opening the first groove along the production line direction on the surface aluminum plate, exposing the surface of the core plate below the surface aluminum plate.

[0084] The second groove processing step may specifically include:

[0085] Step S3: Continue with the end of the moving aluminum-plastic composite board strip as the starting point, use a T-shaped milling cutter to perform rotary cutting and hollowing processing on the core board below along the notch of the first groove, and continuously open a second groove along the direction of the production line directly below the first groove to expose the surface of the bottom aluminum plate under the core plate, so that the part of the surface aluminum plate located on the second groove becomes a suspended part.

[0086] See also Figure 1 In a preferred embodiment, a first slotting device 16 and a second slotting device 17 may be used, which may include two engraving devices, such as two engraving machines, which are separately arranged above the running line of the plate chain conveyor.

[0087] The engraving machine is equipped with a CNC computer equipped with engraving control software to coordinate and control the various hardware mechanisms of the engraving machine. It also includes an electrical control cabinet, which can directly drive the engraving machine to produce mechanical movement according to the control instructions sent by the CNC computer, and detect various states of the engraving machine, and feed back to the CNC computer and control software for identification and processing.

[0088] The engraving machine includes a first engraving machine belonging to the first slotting device 16 and a second engraving machine belonging to the second slotting device 17 .

[0089] The first engraving machine is used to continuously open the first groove 241 along the production line direction on the surface aluminum plate 233 with the end of the aluminum-plastic composite plate strip 23 delivered as the starting point (reference Figure 5 ), exposing the surface of the core plate 232.

[0090] When the first groove 241 is opened, the first engraving machine is set first: according to the standard position of the light bar installation required by the order, the fixed-point engraving position setting and the groove opening depth setting are performed.

[0091] See also Figure 3 In a preferred embodiment, the first engraving machine can be equipped with a straight milling cutter 161, such as a straight groove alloy milling cutter. The slotting depth setting needs to ensure that the slotting depth exceeds the thickness of the surface aluminum plate 233. The selection standard of the cutter head diameter size refers to the lamp slot 24 to be opened (reference Figure 6 ) is determined by the width of the

[0092] When the first engraving machine is slotting the surface aluminum plate 233, the power roller of the plate chain conveyor drives the front end of the aluminum-plastic composite board strip 23 to move forward to the bottom of the first engraving machine. The first engraving machine uses a straight groove alloy milling cutter to perform fixed-point slotting. The aluminum-plastic composite board strip 23 is driven by the power roller and pulled by the driving traction device 20 in front of the production line. When passing through the high-speed straight groove alloy milling cutter, a straight groove of the first groove 241 is automatically formed on the surface aluminum plate 233 of the aluminum-plastic composite board strip 23.

[0093] The second engraving machine is used to hollow out the core plate 232 below the facing aluminum plate 233 by taking the end of the aluminum-plastic composite plate strip 23 delivered to the conveyor as the starting point, and through the notch of the first groove 241, to continuously open the second groove 242 along the production line direction directly below the first groove 241 (refer to Figure 6 ), exposing the surface of the underlying aluminum plate 231.

[0094] See also Figure 4 In a preferred embodiment, the second engraving machine may be equipped with a T-shaped milling cutter 171, for example, a straight shank T-slot alloy milling cutter. The slotting depth setting needs to ensure that the slotting depth does not damage the bottom aluminum plate 231. After slotting, the core material of the core plate 232 at the edges on both sides is exposed. The thickness of the cutter head is selected to be equivalent to the thickness of the plastic core plate 232 in the aluminum-plastic composite board, and the diameter of the cutter head is selected according to the width of the light trough 24 required when the light bar is finally installed.

[0095] When the second engraving machine is slotting (hollowing out) the plastic core plate 232, the power roller of the plate chain conveyor drives the front end of the aluminum-plastic composite board strip 23 to move forward to the position directly below the second engraving machine. The second engraving machine uses a straight-shank T-slot alloy milling cutter to perform fixed-point slotting along the position of the straight groove (first groove 241). The aluminum-plastic composite board strip 23 is driven by the power roller and pulled by the driving traction device 20 in front of the production line. When passing through the high-speed straight-shank T-slot alloy milling cutter, a T-slot is automatically processed on the middle plastic core plate 232 of the aluminum-plastic composite board strip 23. The T-slot includes a second groove 242 located in the core plate 232 layer and a first groove 241 connected to the surface aluminum plate 233 layer located directly above the second groove 242.

[0096] The width of the second groove 242 is greater than the width of the first groove 241, so that the surface aluminum plate 233 located above the second groove 242 has a horizontal hanging portion (hanging part) 2331 extending from the notch end of the second groove 242 to the notch end of the first groove 241. The lateral width of the hanging portion 2331 extending into the second groove 242 corresponds to the thickness of the core plate 232.

[0097] The mobile flanging process may include:

[0098] Step S4: Continuing with the end of the moving aluminum-plastic composite board strip as the starting point, using an inverted trapezoidal punch, the suspended part is synchronously moved back and forth and pressed down in sections, so that the suspended part is bent section by section according to the fixed length of the punch to a vertical state that fits the cross-section of the core board, and the end face of the suspended part is in contact with the surface of the underlying aluminum plate, thereby forming a lamp trough structure on the entire length of the aluminum-plastic composite board strip.

[0099] See also Figure 1A mobile flanging device 18 can be used to take the end of the aluminum-plastic composite board strip 23 delivered as the starting point and to perform mobile repeated downward pressing at a reciprocating speed matching the conveying speed of the plate chain conveyor. Each downward pressing causes a fixed length (e.g., 1000 mm) of the hanging portion 2331 connected during the movement to be bent to a vertical state that fits the cross section of the core plate 232, and causes the end surface of the hanging portion 2331 to contact the surface of the bottom aluminum plate 231, thereby forming a lamp trough 24 structure on the entire length of the aluminum-plastic composite board strip 23.

[0100] In a preferred embodiment, the mobile flanging device 18 may include a mobile high-speed punching machine arranged above the running line of the plate chain conveyor. The straight-line moving distance of the punching machine along the production line is, for example, 2000 mm. The mobile flanging device 18 also includes a positioning sensing system, which adopts an xy-axis four-way positioning setting and is installed on both sides of the plate chain conveyor. And includes a numerical control computer to coordinate and control the positioning sensing system and various hardware mechanisms of the punching machine. It also includes an electrical control cabinet, which directly drives the punching machine to produce mechanical movement according to the control instructions sent by the numerical control computer, and detects various states of the punching machine, and feeds back to the numerical control computer and control software for identification and processing.

[0101] The positioning sensing system can adopt absolute positioning technology and is equipped with an absolute positioning sensor to sense the front edge of the plate strip. Two groups of four aluminum coil edge tracking sensors are installed on both sides of the plate chain conveyor running line, and the edge tracking sensors are connected to the positioning sensing system.

[0102] The first group of 2 aluminum coil edge tracking sensors are connected on the same horizontal line to form an X linear axis, which is arranged on both sides of the plate chain conveyor running line, and the position is consistent with the starting position of the straight-line movement distance of the punch press; the second group of 2 aluminum coil edge tracking sensors are also connected on the same horizontal line to form an X linear axis, which is arranged on both sides of the plate chain conveyor running line, and the position is kept at an accurate straight-line distance of 1000mm from the starting position of the straight-line movement distance of the punch press. In this way, the distance between two adjacent aluminum coil edge tracking sensors on one side of the plate chain conveyor running line is 1000mm, forming a Y linear axis on each side.

[0103] When the front end of the aluminum-plastic composite board strip 23 with the aluminum skin exposed after slotting moves to the punching machine station, the first group of two aluminum coil edge tracking sensors detect the aluminum skin and feedback to the positioning sensing system to locate the starting position. When the second group of two aluminum coil edge tracking sensors detect the aluminum skin, they feedback to the positioning sensing system. At this time, the distance between the two groups of edge tracking sensors is exactly the same as the punch length (i.e., fixed length) of the punching machine. The positioning sensing system feedbacks to the CNC computer (host), and the control instructions sent by the CNC computer directly drive the punching machine to produce mechanical movement. The punching machine starts the first mobile punching from the moving starting position (punching out a hanging part 2331 with a fixed length of 1000mm). After the punching machine completes the first punching, it quickly returns to the starting position and starts punching again (punching out a second hanging part 2331 with a fixed length of 1000mm, and connecting the first hanging part 2331 with a fixed length of 1000mm).

[0104] When the punching machine is performing mobile punching, the punching machine is set up first: the fixed-point punching setting is performed according to the standard position of the light bar installation required by the order, and the position setting is consistent with the slotting fixed-point setting; the moving speed of the punching machine is consistent with the line speed setting of the production line; the punching machine is adjusted to the side of the second engraving machine.

[0105] See also Figure 5 In a preferred embodiment, the punching machine is provided with a special mold, for example, a movable special guide punch 181, and the reciprocating speed of the punch 181 matches the driving conveying speed (linear speed) of the power roller. The punch 181 can be in an inverted terrace shape, and the trapezoidal side of the terrace has a convex arc.

[0106] The punch 181 has a length of the punch 181 corresponding to the fixed length of a section of the hanging portion 2331 targeted at each time of pressing, and has a width of the punch 181 corresponding to the notch of the second groove 242. For example, the length of the punch 181 can be 1000 mm. The width of the lower terrace of the punch 181 is preferably about 1 to 2 mm smaller than the diameter of the T-slot slot, and the width of the upper terrace of the punch 181 is preferably about 0.1 mm smaller than the diameter of the T-slot slot.

[0107] When the punching machine is punching, the pressure of the punch press changes the shape (angle) of the hanging portion 2331 retained at the groove of the surface aluminum plate 233 of the metal composite plate through the punch 181, so that the hanging portion 2331 of the surface aluminum plate 233 is continuously moved closer to the cross-section of the plastic core plates 232 on both sides until it is tightly fitted with the exposed core material surface, so as to achieve the effect of covering the exposed core material.

[0108] During stamping production, when the positioning sensing system senses that the front end of the aluminum-plastic composite board strip 23 after slotting reaches the position directly below the punch 181 of the punching machine, the control starts the mobile stamping. The punching machine performs stamping at an average speed of no more than 20 mm / s. After the stamping is in place, it is statically pressed for a few seconds, and then the punch 181 is lifted, and the punching machine returns to its original position to continue the second mobile stamping. That is, during stamping production, the hanging part 2331 on the entire length of the upper aluminum plate 233 of the moving strip is continuously stamped and bent in sections, and this is repeated until the tail end of the strip. Moreover, during each stamping, the punch 181 moves forward 1000mm synchronously with the aluminum-plastic composite board strip 23, and completes a complete stamping step during the movement to form a lamp trough section with a fixed length of 1000mm, and then lifts up and retreats to the initial position for a second synchronous movement stamping to continue to form a new lamp trough section with a fixed length of 1000mm, and the two lamp trough sections formed by the two stampings are connected end to end.

[0109] The protective film application process may include:

[0110] Step S5: forming a protective film on the surface of the moving aluminum-plastic composite board strip having the lamp trough structure formed thereon.

[0111] See also Figure 1 In a preferred embodiment, a protective film sticking device 19, such as a conventional film sticking machine, can be provided on the production line in front of the punching machine to form a protective film on the surface of the aluminum-plastic composite board strip with the lamp trough structure formed thereon.

[0112] In a preferred embodiment, a driving and traction device 20 may be provided on the production line between the protective film sticking device 19 and the shearing sub-device 21, such as a conventional driving and traction machine.

[0113] Cut-to-length process may include:

[0114] Step S6: cutting the aluminum-plastic composite board strip with the protective film formed thereon into a predetermined length to obtain a finished aluminum-plastic composite board with a lamp trough structure.

[0115] See also Figure 1 In a preferred embodiment, a shearing sub-device 21 can be used on the production line in front of the driving traction device 20, for example, it can include a conventional sizing shearing machine to perform sizing shearing on the aluminum-plastic composite board strip with a protective film formed on the moving board to obtain an aluminum-plastic composite board with a lamp trough structure.

[0116] The finished product collection process may include:

[0117] Step S7: collecting, stacking and packaging the finished aluminum-plastic composite panels with lamp trough structures.

[0118] See also Figure 1 In a preferred embodiment, at the end of the production line in front of the shearing sub-device 21, a finished product receiving device 22 can be provided to receive and stack the finished aluminum-plastic composite panels with an integrated lamp trough 24 structure and for embedded light strips after being cut to length by the shearing machine.

[0119] See also Figure 6 , which shows the production method of the aluminum-plastic composite panel for embedded light strips using the above-mentioned device and the finished structure of the aluminum-plastic composite panel for embedded light strips processed by the above-mentioned device.

[0120] In a preferred embodiment, the finished aluminum-plastic composite panel for embedded light strips includes, from bottom to top, a bottom aluminum plate 231, a core plate 232, and a surface aluminum plate 233 bonded by thermal bonding, and a lamp trough 24 is processed downward from the surface of the surface aluminum plate 233, and the bottom surface of the lamp trough 24 is used to install the embedded light strip.

[0121] The two sides of the lamp trough 24 are covered with the hanging parts 2331 (aluminum material) of the surface aluminum plate 233 after the above-mentioned stamping and flanging, and the bottom surface of the lamp trough 24 is formed by the upper surface of the exposed bottom aluminum plate 231. Since the reserved length of the hanging parts 2331 corresponds to the thickness of the core plate 232 when the trough is opened, the hanging parts 2331 can completely cover the core plate 232 after stamping and bending, so as to avoid the core material of the core plate 232 being exposed. At the same time, the cross section of the core plate 232 also plays a good supporting role for the hanging parts 2331, thereby preventing the deformation of the lamp trough 24.

[0122] Therefore, the present invention realizes a new technology for online processing of lamp troughs 24 on aluminum-plastic composite panels, reducing the burden of secondary processing on cabinet furniture companies. In addition, the finished aluminum-plastic composite panel with an integrated lamp trough 24 structure and used for embedded light strips produced by the present invention can maintain the overall unity and perfection of the building decoration surface, can be seamlessly combined with the decorative panel surface, and is more neat and beautiful visually.

[0123] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. A method for producing an aluminum-plastic composite panel for an embedded light strip, characterized in that: The following steps are involved: Step S1: obtaining the aluminum-plastic composite board strip after thermal composite forming; Step S2: continuously opening first grooves on the surface aluminum plate on the surface of the aluminum-plastic composite board strip in motion, exposing the surface of the core plate below the surface aluminum plate; Step S3: Continue to hollow out the core plate below along the first groove, and continuously open a second groove to expose the surface of the bottom aluminum plate below the core plate; Step S4: Continue to move the suspended portion of the surface aluminum plate on the second groove downward in sections, so that the suspended portion is bent section by section according to a fixed length to fit the cross section of the core plate, thereby forming a lamp trough structure on the aluminum-plastic composite board strip over the entire length, wherein: The step S1 specifically includes: Step S11: obtaining a core plate strip that is continuously extruded and pre-shaped; Step S13: sticking adhesive films on the upper and lower surfaces of the moving core strip respectively; Step S15: laminating the surface layer aluminum plate strip and the bottom layer aluminum plate strip respectively on the upper and lower surfaces of the core plate strip which is in motion and has the adhesive film attached thereto; Step S17: continuously heat-compounding and cooling the bottom aluminum plate strip, the core plate strip and the surface aluminum plate strip to obtain an aluminum-plastic composite plate strip after heat-compounding; The step S14 is also included between the step S13 and the step S15: Continuously cutting off the excess edge of the core plate strip on which the adhesive film is pasted while in motion, so that the width of the core plate strip after the edge cutting corresponds to the width of the surface aluminum plate strip and the bottom aluminum plate strip; The step S4 specifically includes: Continuing with the end of the moving aluminum-plastic composite board strip as the starting point, use an inverted trapezoidal punch to synchronously move back and forth and press down in sections, so that the hanging part is bent section by section according to the fixed length of the punch to a vertical state that fits the cross-section of the core board, and the end face of the hanging part is in contact with the surface of the underlying aluminum plate, thereby forming a lamp trough structure on the entire length of the aluminum-plastic composite board strip.

2. The method for producing an aluminum-plastic composite panel for an embedded light strip according to claim 1, characterized in that: The step S2 specifically includes: Taking the end of the moving aluminum-plastic composite board strip as the starting point, a straight milling cutter is used to perform rotary cutting on the surface aluminum plate, and a first groove is continuously opened on the surface aluminum plate along the direction of the production line to expose the surface of the core plate below the surface aluminum plate.

3. The method for producing an aluminum-plastic composite panel for an embedded light strip according to claim 1, characterized in that: The step S3 specifically includes: Continuing with the end of the moving aluminum-plastic composite board strip as the starting point, use a T-shaped milling cutter to perform rotary cutting and hollowing processing on the core board below along the notch of the first groove, and continuously open a second groove along the production line direction directly below the first groove to expose the surface of the bottom aluminum plate below the core plate, so that the part of the surface aluminum plate located on the second groove becomes a suspended part.

4. The method for producing an aluminum-plastic composite panel for an embedded light strip according to claim 1, characterized in that: The lateral width of the hanging portion on the second groove corresponds to the thickness of the core plate.

5. The method for producing an aluminum-plastic composite panel for an embedded light strip according to claim 1, characterized in that: The step S5 is also included: A protective film is formed on the surface of the traveling aluminum-plastic composite board strip having the lamp trough structure.

6. The method for producing an aluminum-plastic composite panel for an embedded light strip according to claim 5, characterized in that: The step S6 is also included: The aluminum-plastic composite board strip with the protective film formed thereon is sheared to a predetermined length to obtain an aluminum-plastic composite board finished product with a lamp trough structure.

7. The method for producing an aluminum-plastic composite panel for an embedded light strip according to claim 6, characterized in that: The step S7 is also included: The finished aluminum-plastic composite panel with the lamp trough structure is collected, stacked and packaged.

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