WO2021073238A1

WO2021073238A1 - Led light strip coated with waterproof insulation pvc resin and manufacturing method therefor

Info

Publication number: WO2021073238A1
Application number: PCT/CN2020/109149
Authority: WO
Inventors: 王定锋; 徐文红; 冉崇友; 徐磊; 琚生涛
Original assignee: 王定锋
Priority date: 2019-10-16
Filing date: 2020-08-14
Publication date: 2021-04-22
Also published as: CN112664852A

Abstract

The present invention relates to an LED light strip coated with waterproof insulation PVC resin and a manufacturing method therefor, specifically: using a PVC film provided with adhesive to paste parallel wires to form a flat wire; assembling in a head-totail arrangement on the flat wire a short bare light strip already welded with a circuit board containing LED components, and forming a welding connection between the bare light strip and the flat wire; and using an extrusion machine to coat melted PVC on the bare light strip provided with the flat wire, the outer coating PVC and the PVC on the flat wire forming melted bond fixation to integrally connect the manufactured light strip and the outer coating PVC.

Description

LED light strip outsourcing waterproof and insulating PVC resin and manufacturing method thereof

Technical field

The invention relates to the field of LED light strips, in particular to an LED light strip outsourcing waterproof and insulating PVC resin and a manufacturing method.

Background technique

The existing technology makes the outsourcing waterproof insulated lamp with the following scheme: The method of fixing the circuit board with PVC resin is that the PVC clamps the two sides of the light strip circuit board without components to form a fixation. In this way, the circuit board must be designed and manufactured on both sides. Each has a board edge without soldering components, which makes the circuit cost high. In addition, a clamping structure for clamping the circuit board must be designed and made with the outsourcing PVC resin inside, which increases the amount of outsourcing PVC resin and increases the cost of PVC.

In order to overcome the above shortcomings and deficiencies, the present invention firstly produces a conjoined long flat cable containing multiple light strip cables. The long flat cable is a long flat cable made by bonding multiple parallel wires with a layer of film, or Use two layers of film to glue multiple parallel wire clips in the middle to make a long cable, and at least one of the films is PVC film, and at least one of the films is a film with glue, two layers of film or one layer of film If there is a conductive point that exposes the metal of the cable, then multiple short bare light strips that have been soldered on the circuit board containing LED lights are arranged end to end and welded to the cable to form a fixed and conductive, or the end to end is glued to the After the long ribbon cable, the circuit board and the ribbon cable are welded and connected to make the assembled long bare LED strip with PVC film on the back. The long bare strip is characterized by multiple short bare strips and long strips. The flat wires are welded together, or both glued together and welded together. Each short bare light strip has been connected to the long wire welding connection, and the back of the long bare light strip is PVC film, using an extruder The PVC is melted and squeezed onto the long bare light strip to form a package. The melted PVC and the PVC on the back of the long bare light strip form a fusion adhesive connection, so that the bare light strip and the outer PVC are connected together. After being cooled by water, a LED strip with waterproof and insulating PVC resin is produced. This kind of light strip circuit board can be narrower and cost-saving, the wrapped PVC glue does not need to have an extra crimping structure, which saves PVC glue and saves costs.

Summary of the invention

The present invention relates to an LED light strip outsourcing waterproof and insulating PVC resin and a manufacturing method. Specifically, a flexible PVC film is used to paste parallel wires to make a flat line, and then a short bare lamp on a circuit board containing LED components is welded The strips are arranged end to end and assembled on the cable, and the bare light strip and the cable are formed into a welded connection, and then the melted PVC is wrapped on the bare light strip with the cable by an extruder, and the PVC and the cable are covered. The PVC forms a melt-bonded fixation, and the finished light strip and the outsourcing PVC are connected as a whole.

According to the present invention, there is provided a method for manufacturing LED light strips with waterproof and insulating PVC resin. Specifically, a method for manufacturing LED light strips with waterproof and insulating PVC resin is provided. Specifically, a long cable is made first. The cable is a long cable made by bonding multiple parallel wires with a layer of PVC film, or a long cable made by bonding multiple parallel wires with two layers of film in the middle, and the two layers of film are at least One of the films is a PVC film, and at least one of the two films is a film with glue. At least one of the two films has a conductive point that exposes the wire metal, and then a number of welded wires contain LEDs. The circuit board of the lamp has short bare strips, and the end to end is arranged and welded to the flat wire to form a fixation and conduction, or multiple short bare strips are arranged end to end to the long strip with adhesive, and then the circuit board and the flat wire Welding connection leads to an assembled LED long bare strip with PVC film on the back. The long bare strip is characterized by multiple short bare strips and long cables that are welded together, or both are glued together. Welded and connected together, each short bare strip has been connected to the long flat wire welding connection, and always keep the back of the long bare strip with PVC film, use an extruder to melt the PVC and squeeze it into the long bare strip During extrusion, the melted PVC and the PVC on the back of the long bare light strip form a fusion bonding connection, so that the bare light strip and the outer PVC are connected together. After cooling by water, it is made An LED light strip with waterproof and insulating PVC resin.

According to the present invention, there is also provided an LED light strip with waterproof and insulating PVC resin, comprising: components containing LED lights; a plurality of circuit boards; a long cable with a PVC film on the back; PVC resin outsourcing; characterized in that, The circuit board is a flexible circuit board, the circuit board is welded with components containing LED lights to form a short bare light strip, and the long cable with a PVC film on the back is a layer of PVC film with glue to bond multiple wires The formed long cable, or the double-layer film, at least one of the films is a film with glue, the two layers of film sandwich a long cable formed by bonding multiple wires, and the long cable has exposed and short bare light strip welding connections Metal, multiple short bare light strips are arranged end to end and welded to the long wire, or multiple short bare light strips are glued and welded to the long wire, and the long bare light strip is covered with PVC resin. A full-circle enclosed package has been formed for the long bare light strip in the longitudinal direction. The PVC film on the back of the long cable is also a fusion bond between the PVC film on the back of the light strip and the outsourcing PVC resin, so that the light strip and the outsourcing PVC resin Bonding is integrated, and the circuit board is a circuit board with a single-layer circuit or a circuit board with a double-layer circuit.

According to a preferred embodiment of the present invention, in the LED light strip with waterproof and insulating PVC resin, the cable is formed by bonding multiple wires with a single layer of PVC film with glue to form a cable. On the non-film side of the wire, an ink layer is made to form an insulating layer, and a pad window is opened on the ink layer for connection and conduction with the short bare light strip.

In the following description of the drawings and specific embodiments, details of one or more embodiments of the present invention will be explained.

Description of the drawings

The features, objects and advantages of the present invention will become more apparent by reading this specification in conjunction with the following drawings. A brief description of the drawings is as follows.

Figure 1 is a schematic plan view of a short bare light strip.

Fig. 2 is a long line of a single-layer film, a schematic plan view of juxtaposed flat wires viewed from the front.

Figure 3 is a schematic plan view of a long cable, a layer of PVC with glue, a layer of PET with glue, and a wire.

Figure 4 is a plan view of a long cable, a layer of PVC without glue, a layer of PET with glue, and wires

Figure 5 is a schematic plan view of a long cable with a PET film on the front.

Figure 6 is a schematic plan view of a long cable without a film on the front side.

Figure 7 is a front view of a long strip of cables and a long bare light strip.

Figure 8 is a partial cross-sectional schematic diagram of a long cable and a long bare light strip.

Fig. 9 is a cross-sectional schematic diagram of a single assembled long bare LED light strip with insulating and waterproof resin outsourcing to make a long bare LED light strip with waterproof and insulating PVC resin outsourcing.

Fig. 10 is a plan view of the juxtaposed flat wires seen from the front of the long cable of the two-layer film connected in one piece.

Fig. 11 is a plan view of the juxtaposed flat wires seen from the front of the long cable of the conjoined single-layer film.

Figure 12 is a front view of a short piece of bare light strip.

Fig. 13 is a schematic plan view of printing the adhesive on a partial position on the back of a connected LED short strip with multiple strips.

Figure 14 is a schematic diagram of a long line with glue arranged end to end

Detailed ways

Hereinafter, the present invention will be described in detail by taking a preferred embodiment as an example.

However, those skilled in the art should understand that the following descriptions are merely examples to illustrate and describe some preferred embodiments, and do not have any limitation on the claims of the present invention.

Example one

1. Production of short bare light strips:

Using the traditional SMT patch process, the lamp beads 1.1 and the resistance 1.2 electronic components are welded on the circuit board to make a short bare lamp strip (as shown in Figure 1) for use.

2. The production of long cables:

A layer of PVC film 2.1 with glue 2.2 is pasted with multiple long wires 2.3 to make a long cable, or a layer of PVC film 2.1 with glue 2.2 and a layer of PET film 2.5 with glue 2.2 are sandwiched by multiple wires 2.3 to make a long cable Flat wire 5.2, and then use a laser machine to cut off the film 2.5 and glue 2.2, expose the solder joint 2.4 to make a long flat wire 5.1 (as shown in Figure 2, Figure 3, Figure 4, Figure 5, Figure 6) for use.

3. The production of long naked light strips:

Attach multiple short bare strips 7.3 to the end of the long strip 7.1 with glue 7.2, and then weld the long strip 7.1 to 6.1 to make a long strip of bare strips. The long strips of bare strips with PVC film 2.1 are always on the lamp. The back of the belt (shown in Figures 7 and 8).

4. Production of LED strips outsourcing waterproof and insulating PVC resin:

Use a Loncin extruder to heat and melt the PVC resin 8.1 on the long bare light strip, so that the bag is placed on the bare light strip with PVC film 2.1 on the back. When extruding, the PVC film 2.1 on the back of the light strip is extruded. When it touches the high-temperature melting PVC resin 8.1, the PVC film 2.1 will fuse and firmly bond with the high-temperature melting PVC resin 8.1 when heated, so that the bare light strip and the outer PVC resin are firmly bonded together to form an integral structure. After being cooled and shaped by a water cooling tank, a waterproof and insulated LED light strip (shown in Figure 9) is made of the circuit board and the PVC resin outsourcing resin firmly bonded together.

Example two

1. Production of short bare light strips:

Using the traditional SMT patch process, the electronic components such as lamp beads 1.1 and resistor 1.2 are welded on the circuit board to make a short bare lamp strip (as shown in Figure 13) for use.

2. The production of conjoined long cables:

A layer of PVC film 2.1 with adhesive 2.2 is pasted with multiple long wires 2.3 to make a conjoined long cable with multiple long cables, or a layer of PVC film 2.1 with adhesive 2.2 and a layer of PET with adhesive 2.2 The film 2.5 clamps multiple wires 2.3 to make a conjoined long cable, and then uses a laser machine to cut the film and glue to expose the solder joints 2.4 to make a conjoined long cable 9.1 or 10.1 (as shown in Figure 10 and Figure 11). .

3. The production of one-piece long naked light strip:

Connect multiple short strips 12.1 with multiple short strips with glue 13.1, and glue them to the long strips 9.1 or 10.1 with long strips, and then connect them with the long strips. Welding 6.1 is turned on (as shown in Figure 10, Figure 11, Figure 12, Figure 13, Figure 14).

4. Making a single long naked light strip

Use a slitting machine to slit and make a single long bare light strip. The PVC film 2.1 on the long bare light strip is always on the back of the light strip.

5. Production of LED light strips outsourcing waterproof and insulating PVC resin:

Use an extruder to heat and melt the PVC resin 8.1 and extrude it on the long bare light strip, so that the bag is placed on the bare light strip with PVC film 2.1 on the back. When extruding, the PVC film 2.1 on the back of the light strip touches When the PVC resin 8.1 melts at high temperature, the PVC film 2.1 will merge with the PVC melted at high temperature when heated, so that the bare light strip and the outer PVC resin will be firmly bonded together to form an integral structure, and then pass through the water cooling tank. After cooling and shaping, the waterproof and insulated LED light strip is made of the circuit board and the outer PVC resin firmly bonded together (as shown in Figure 9).

The invention has been described in detail in the above with reference to the accompanying drawings with a specific embodiment of the LED light strip outsourcing the waterproof insulating PVC resin and the manufacturing method thereof. However, those skilled in the art should understand that the above descriptions are merely examples to illustrate and describe some specific embodiments, and do not impose any limitation on the scope of the present invention, especially the scope of the claims.

Claims

A method for manufacturing LED light strips with waterproof and insulating PVC resin. Specifically, a long cable is made first. The long cable is a long cable made by bonding multiple parallel wires with a layer of PVC film, or Use two layers of film to glue multiple parallel wire clips in the middle to make a long cable, and at least one of the two layers of film is PVC film, and at least one of the two layers of film is a film with glue, two layers of film At least one layer of the film is made with a conductive point that exposes the metal of the cable, and then a number of short bare light strips on the circuit board containing LED lights are welded and connected to the cable to form a fixed and conductive connection, or After multiple short bare light strips are arranged end-to-end and glued to the long ribbon cable, the circuit board and the ribbon cable are welded and connected to form an assembled long bare LED strip with a PVC film on the back. The characteristic of the strip is that multiple short bare light strips are welded to the long flat wire, or both glued together and welded together. Each short bare light strip has been welded and connected to the long flat wire, and Always keep the back of the long bare light strip with PVC film. Use an extruder to melt the PVC and squeeze it onto the long bare light strip to form a package. During extrusion, the melted PVC and the PVC on the back of the long bare light strip form a fusion The type of bonding connection makes the bare light strip and the outer PVC connection become one. After cooling by water, a LED light strip with waterproof and insulating PVC resin is made.
A kind of LED light strip outsourcing waterproof and insulating PVC resin, including:

Components containing LED lights;

Multiple circuit boards;

Long cable with PVC film on the back;

Outsourcing PVC resin;

It is characterized in that the circuit board is a flexible circuit board, the circuit board is welded with components containing LED lights to form a short bare light strip, and the long cable with a PVC film on the back is a layer of PVC film with glue. A long row of wires formed by multiple wires, or a double-layer film. At least one of the films is a film with glue. The two layers of films are sandwiched by multiple wires to form a long row of wires. The long wires are exposed and short. The metal to which the light strip is welded, multiple short bare light strips are arranged end-to-end and welded to the long wire, or multiple short bare light strips are glued and welded to the long wire, outsourcing PVC resin The long bare light strip has formed a full-circle enclosed package in the longitudinal direction of the long bare light strip. The PVC film on the back of the long flat cable is also the PVC film on the back of the light strip and the PVC resin outsourcing to form a fusion bond to make the light strip It is integrated with the outsourcing PVC resin, and the circuit board is a circuit board of a single-layer circuit or a circuit board of a double-layer circuit.
According to claim 1 or 2, a waterproof and insulating PVC resin coated LED light strip, the cable is made of a single layer of PVC film with glue, when multiple wires are bonded to form a cable, it can be used in the absence of the cable. An ink layer is made on one side of the film to form an insulating layer, and a pad window is opened on the ink layer to connect and conduct with the short bare light strip.