LED light strip outer skin extruder

Abstract

This utility model discloses an LED light strip outer skin extruder, including a die head. The die head has a feed inlet, a feed channel, and an extrusion channel connected sequentially. The extrusion channel has an inner die and an outer die coaxial with it. The inner die has two discharge nozzles, and the outer die has two discharge ports that cooperate with the discharge nozzles. The discharge nozzles extend from the discharge ports. The extrusion channel is horizontally arranged, and the two discharge ports are horizontally symmetrically arranged on both sides of the center of the extrusion channel. The feed channel is connected to the center of the extrusion channel in the vertical direction. This utility model can extrude two LED light strips simultaneously, resulting in high production efficiency. Furthermore, the rubber material enters between the two discharge ports through the feed channel, which is perpendicular to the vertical direction of the extrusion channel, ensuring uniform pressure at both discharge ports and high consistency in the outer skin dimensions of the two light strips. In addition, since the two discharge ports are horizontally arranged, they can be driven by the same set of horizontally arranged drive wheels, simplifying the equipment.

Description

Technical Field

[0001] This utility model relates to a manufacturing equipment for LED light strips, specifically disclosing an LED light strip outer skin extruder. Background Technology

[0002] The manufacturing process of LED light strips involves soldering LED chips onto a flexible circuit board, and then using an extruder to wrap a PVC outer sheath around the circuit board. (Reference) Figure 10 An existing LED light strip extruder includes a die head 1, which has a longitudinal extrusion channel 11 and a transverse feed channel 12. An inner mold 4 is located inside the extrusion channel 11, and an outer mold 7 is located outside the inner mold 4. An outlet 43 is located on the inner mold 4, and an outlet 71 is located on the outer mold 7. The outlet 43 extends from the outlet 71. The inner mold 4 forms the internal shape of the outer skin, and the outer mold 7 forms the external shape of the outer skin. The circuit board L1 of the LED light strip passes through the outlet 43 of the inner mold 4, and the rubber compound L2 flows from the feed channel 12 through the extrusion channel 11 and exits from the outlet 71 of the outer mold 7, wrapping around the circuit board to form the LED light strip L. Because the existing extruder only has one outlet 71 on its inner mold 4 and outer mold 7, it can only extrude one LED light strip L at a time, resulting in low production efficiency and requiring improvement. Utility Model Content

[0003] Based on this, it is necessary to address the existing technical problems by providing an LED strip extruder that can simultaneously extrude two LED strips, produces LED strips with uniform outer skin, high production efficiency, and a simple structure.

[0004] To address the problems of existing technologies, this utility model discloses an LED light strip outer skin extruder, including a die head. The die head contains a feed inlet, a feed channel, and an extrusion channel that are sequentially connected. The extrusion channel contains an inner die and an outer die coaxial with the feed inlet. The inner die has two discharge nozzles, and the outer die has two discharge ports that cooperate with the discharge nozzles. The discharge nozzles extend from the discharge ports. The extrusion channel is horizontally positioned, and the two discharge ports are horizontally and symmetrically positioned on both sides of the center of the extrusion channel. The feed channel is connected to the center of the extrusion channel in the vertical direction.

[0005] The beneficial effects of this utility model are as follows: Since this utility model has two discharge ports, it can extrude two LED light strips at the same time, resulting in high production efficiency; and the rubber material enters between the two discharge ports through the feed channel perpendicular to the vertical direction of the extrusion channel, so the pressure at the two discharge ports is uniform, and the outer skin size and thickness of the two extruded light strips can be kept consistent; in addition, since the two discharge ports are arranged horizontally, they can be driven by the same set of horizontally arranged drive wheels, making the equipment simple.

[0006] As a further improvement of this utility model: the feed channel is connected to the extrusion channel below it. The feed inlet is located below one side of the extrusion channel. The feed channel includes a horizontal channel and a vertical channel. The horizontal channel is connected to the feed inlet, and the vertical channel is connected to the horizontal channel and the extrusion channel below it. A connecting plate is installed at the front end of the die head. A first mounting hole is provided in the center of the connecting plate. An outer mold sleeve is nested in the first mounting hole. A second mounting hole is provided in the outer mold sleeve. The outer mold is installed in the second mounting hole. Adjusting screws extending into the mounting holes are provided on both sides of the horizontal direction and both sides of the vertical direction of the connecting plate. The adjusting screws abut against both sides of the horizontal direction and both sides of the vertical direction of the outer mold sleeve, respectively. The adjusting screws can adjust the position of the outer mold in the horizontal and vertical directions. The outer wall of the outer mold is conical, and its conical outer wall abuts against the inner side of the second mounting hole of the outer mold sleeve for fixation. The machine head is equipped with a core sleeve at the rear end, and a mold core seat is installed inside the core sleeve. The mold core seat passes through the front and rear end faces of the machine head from the extrusion channel, and the rear end of the inner mold is screwed into the front end of the mold core seat by threads. Attached Figure Description

[0007] Figure 1 This is an assembly diagram of the present invention.

[0008] Figure 2 This is a half-sectional structural diagram of the head of this utility model.

[0009] Figure 3 This is a half-sectional structural diagram of the mechanism sleeve of this utility model.

[0010] Figure 4 This is a half-sectional structural diagram of the inner mold of this utility model.

[0011] Figure 5 This is a half-sectional structural diagram of the outer mold of this utility model.

[0012] Figure 6 This is a schematic diagram of the assembled version of this utility model.

[0013] Figure 7 This is a half-sectional schematic diagram of the extruder of this utility model.

[0014] Figure 8 This is a schematic diagram showing the usage state of this utility model.

[0015] Figure 9 This is a cross-sectional view of the present invention in use.

[0016] Figure 10 A cross-sectional view of the existing extruder in use. Detailed Implementation

[0017] To further understand the features, technical means, specific purposes, and functions of this utility model, a more detailed description of the utility model is provided below in conjunction with the accompanying drawings and specific embodiments. The descriptions of the positions of the components themselves and between components in this application (including but not limited to front, back, top, bottom, inner, outer, left, right, top, and bottom, etc.) are relative relationships with reference only to the positions of the relevant components shown in the accompanying drawings of this application, and do not represent an absolute limitation on the scope of protection of this utility model. Those skilled in the art should understand that if the view direction or reference coordinates of the components change, the above description of positional relationships may change, but the essential mechanical structure remains unchanged.

[0018] refer to Figure 1 , Figure 6 and Figure 7 An LED light strip extruder includes a die head 1, with an extrusion channel 11 running through its front and rear ends, and a feed channel 12 connecting the extrusion channel 11. A core sleeve 2 is installed at the rear end of the die head 1, and a die core holder 3 is installed inside the core sleeve 2. The die core holder 3 extends from the rear end of the die head through the extrusion channel 11, and an inner die 4 is located at the front end of the die core holder 3. A connecting plate 5 is installed at the front end of the die head 1, and an outer die sleeve 6 is installed inside the connecting plate 5. An outer die 7, fitted around the inner die 4, is installed inside the outer die sleeve 6.

[0019] refer to Figure 2 , Figure 6 and Figure 7 The die head 1 is provided with a feed inlet 10, which is located below one side of the extrusion channel 11. The feed channel 12 is located below one side of the extrusion channel 11 and includes a horizontally arranged horizontal channel 12a and a vertically arranged vertical channel 12b. The horizontal channel 12a is a channel that is perpendicular to one side of the extrusion channel in the horizontal direction, and the vertical channel 12b is a channel that is perpendicular to the same plane as the extrusion channel 11 in the vertical direction. The horizontal channel 12a is connected to the feed inlet 10, and the vertical channel 12b is connected to the center of the extrusion channel 11 below it. The feed channel 12 can be arranged below or above the vertical direction of the extrusion channel 11. In this invention, the feed channel 12 is preferably arranged below the extrusion channel and is vertically connected to the center of the extrusion channel 11 below it in the vertical direction through the vertical channel 12b. In this way, the feed inlet 10 is located on one side of the extrusion channel 11 in the horizontal direction, which facilitates feeding; and since the rubber compound is fed from below the extrusion channel 11, air and moisture in the rubber compound can be discharged through the gap above the extrusion channel 11, preventing air bubbles from forming inside the extruded part. Of course, the feed channel 12 may also omit the transverse channel 12a and directly place the feed inlet 10 below the die head, communicating with the extrusion channel 11 only through the vertical channel 12b.

[0020] refer to Figure 3The core sleeve 2 includes a mounting plate 21 and a sleeve 22 inserted in the center of the mounting plate 21. The rear end of the sleeve 22 is provided with an external thread 23. The mounting plate 21 is fixed to the rear end of the head 1 by screws. The front end of the sleeve 22 is inserted into the extrusion channel 11 of the head, and its rear end is exposed on the rear side of the mounting plate 21.

[0021] refer to Figure 1 The mold core seat 3 is tubular with a through-cavity, an external thread 31 at its rear end, and an internal thread on its front inner wall. The mold core seat 3 is inserted into the sleeve 22 of the movement sleeve 2, and a reducing nut M1 is provided at its rear end. The reducing nut M1 has internal threads that mate with the external thread 23 of the movement sleeve 2 and the external thread 31 of the mold core seat 3, respectively, thus fixing the mold core seat 3 to the rear end of the sleeve 22 of the movement sleeve 2.

[0022] refer to Figure 4 , Figure 6 and Figure 7 The inner mold 4 has a through-cavity, and its rear end is provided with a mounting part 41 that matches the inner diameter of the mold core seat 3. The mounting part 41 is provided with an external thread, and the inner mold 4 is screwed into the internal thread at the front end of the mold core seat 3 through the mounting part 41 for fixation.

[0023] refer to Figure 1 , Figure 5 , Figure 6 and Figure 7The connecting plate 5 has a first mounting hole 51 at its center, and adjusting screws M2 on both its horizontal and vertical sides that can extend into the first mounting hole 51. The outer mold sleeve 6 has an outer step 61 at its rear end and a second mounting hole 62 at its front end. The outer mold 7 has an inner cavity, and two horizontally arranged discharge ports 71 communicating with the inner cavity are provided at its front end. Its outer wall is conical. The outer mold 7 is installed inside the outer mold sleeve 6, and its front end extends out of the second mounting hole 61 of the outer mold sleeve 6. The outer mold 7 is fixed by the pressure of the rubber material pushing its conical outer wall against the inner side of the second mounting hole 61 of the outer mold sleeve 6. In this way, the fixing structure of the outer mold 7 is simple. The outer mold sleeve 6 is installed in the first mounting hole 51 of the connecting plate 5, and its front end extends out of the first mounting hole 51. The connecting plate 5 is fixed to the front end of the machine head 1 by screws M2, and its rear side abuts against the outer step 61 of the outer mold sleeve 6, limiting the displacement of the outer mold sleeve 6 in the front-rear direction. The adjusting screws M2 abut against the horizontal and vertical sides of the outer mold sleeve 6, respectively. By adjusting the screwing length of the adjusting screws M2, the position of the outer mold sleeve 6 in the horizontal and vertical directions can be adjusted, thereby adjusting the gap between the outer mold 7 and the inner mold 4 in various directions. The discharge nozzle 43 of the inner mold 4 extends from the discharge port 71 of the outer mold 7. The inner cavity of the mold core seat 3, the inner cavity of the inner mold 4, and the discharge nozzle 31 of the inner mold 4 constitute the passageway of the circuit board L1; the horizontal flow channel 12a, the vertical flow channel 12b, the extrusion flow channel 11, and the gap between the inner mold 4 and the outer mold 5 constitute the flow channel of the rubber material L2.

[0024] refer to Figure 8 and Figure 9 The method of using this utility model is as follows: First, two circuit boards L1 with soldered LED beads are passed sequentially from the rear end of the mold core seat 3 through the inner cavity of the mold core seat 3, the inner cavity of the inner mold 4, and the two discharge nozzles 31, and connected to the traction wheel D; then, the traction wheel D drives the circuit boards forward, and at the same time, the preheated fluid material L2 is extruded into the feed port 10 of the machine head 1 using a screw. The material L2 passes through the transverse flow channel 12a and the vertical flow channel 12b of the machine head 1, and enters vertically from below between the two discharge ports 71 of the vertical flow channel 13. Then, it flows out from the two discharge ports 41 through the gap between the inner mold 4 and the outer mold 5, wrapping around the two circuit boards to form two independent LED light strips L; finally, the two LED light strips L hang into the water tank S under the action of gravity, and are cooled and shaped in the water tank S.

[0025] This invention features two discharge ports, enabling the simultaneous extrusion of two LED light strips, resulting in high production efficiency. Furthermore, the rubber material enters between the two discharge ports through a feed channel perpendicular to the vertical direction of the extrusion channel, ensuring uniform pressure at both discharge ports and maintaining consistent outer dimensions and thicknesses for the two extruded light strips. Additionally, the horizontal arrangement of the two discharge ports allows for the use of the same set of horizontally arranged drive wheels, simplifying the equipment.

[0026] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An LED light strip outer skin extruder, comprising a die head, wherein a feed inlet, a feed channel, and an extrusion channel are sequentially connected within the die head, and an inner die and an outer die are coaxially arranged within the extrusion channel, characterized in that: The inner mold is provided with two discharge nozzles, and the outer mold is provided with two discharge ports that cooperate with the discharge nozzles. The discharge nozzles extend from the discharge ports. The extrusion channel is horizontally arranged, and the two discharge ports are horizontally and symmetrically arranged on both sides of the center of the extrusion channel. The feed channel is connected to the center of the extrusion channel in the vertical direction of the extrusion channel.

2. The LED light strip extruder of claim 1, wherein: The feed channel is connected to the extrusion channel in the vertical direction below the extrusion channel.

3. The LED light strip extruder of claim 2, wherein: The feed inlet is located below one side of the extrusion channel. The feed channel includes a horizontal channel and a vertical channel. The horizontal channel is connected to the feed inlet, and the vertical channel is located below the extrusion channel and connects the horizontal channel and the extrusion channel.

4. The LED light strip extruder of claim 1, wherein: A connecting plate is installed at the front end of the machine head. A first mounting hole is provided in the center of the connecting plate. An outer mold sleeve is nested in the first mounting hole. A second mounting hole is provided in the outer mold sleeve. The outer mold is installed in the second mounting hole. Adjusting screws that extend into the mounting holes are provided on both sides of the horizontal direction and both sides of the vertical direction of the connecting plate. The adjusting screws abut against both sides of the horizontal direction and both sides of the vertical direction of the outer mold sleeve, respectively. The adjusting screws can adjust the position of the outer mold in the horizontal direction and the vertical direction.

5. The LED strip outer sheath extruder according to claim 4, characterized in that: The outer wall of the outer mold is conical, and its conical outer wall abuts against the inner side of the second mounting hole of the outer mold sleeve for fixation.

6. The LED light strip outer sheath extruder according to claim 1, characterized in that: The machine head is equipped with a core sleeve at the rear end, and a mold core seat is installed inside the core sleeve. The mold core seat passes through the front and rear end faces of the machine head from the extrusion channel, and the rear end of the inner mold is screwed into the front end of the mold core seat by threads.

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