A multi-head glue dispensing valve

Abstract

The utility model belongs to the technical field of glue dispensing, and relates to a glue-dispensing multi-head glue dispensing valve, comprising a glue dispensing valve block, wherein a glue-dropping channel, a glue-dispensing chamber and a glue-dispensing channel are arranged in the glue dispensing valve block; the top end of the glue-dropping channel is connected to a glue inlet of the glue dispensing valve block, and the bottom end of the glue-dropping channel is connected to the glue-dispensing chamber; a plurality of glue-dispensing holes are arranged at the bottom end of the glue dispensing valve block, and the plurality of glue-dispensing holes are connected to the glue-dispensing channel; wherein the glue-dispensing chamber is used for temporarily storing glue to make the glue liquid level horizontal, and a horizontal channel having the same width as the glue-dispensing channel is arranged at the top end of the glue-dispensing chamber, and the horizontal channel is used to allow the glue overflowing horizontally in the glue-dispensing chamber to enter the glue-dispensing channel.

Description

Technical Field

[0001] The utility model belongs to the technical field of glue dispensing and relates to a glue uniforming multi-head glue dispensing valve. Background Art

[0002] In the global environment of advocating energy conservation and environmental protection, LED technology has penetrated into many industries, including daily lighting, backlighting, automobiles, agriculture, medical treatment, etc. The application field determines the diversification of LED packaging forms. The COB packaging process usually includes solid crystal welding wire, fluorescent glue dispensing, drying and other processes. When producing COB light strips, in order to improve production efficiency, when producing COB light strips, multiple needles are often used for multi-head dispensing. This requires high consistency of glue discharge between different dispensing holes of the dispensing valve. The more dispensing holes, the higher the difficulty of dispensing consistency. Utility Model Content

[0003] The utility model aims to provide a multi-head glue dispensing valve for uniform glue distribution in view of the deficiencies in the prior art. The glue dispensing valve temporarily stores glue in a uniform glue distribution chamber to make the glue liquid level level, and uses an overflow glue supply method to maintain the consistency of glue output between multiple different glue dispensing holes.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A glue-spreading multi-head dispensing valve, comprising a dispensing valve block, wherein the dispensing valve block is provided with a glue-dropping channel, a glue-spreading chamber and a glue-dispensing channel;

[0006] The top end of the glue drop channel is connected to the glue inlet of the glue dispensing valve block, and the bottom end of the glue drop channel is connected to the glue uniformly distributing chamber;

[0007] The bottom end of the dispensing valve block is provided with a plurality of dispensing holes, and the plurality of dispensing holes are connected with the dispensing channel;

[0008] The glue leveling chamber is used to temporarily store glue to make the glue level horizontal. The top of the glue leveling chamber is provided with a horizontal channel with the same width as the glue dispensing channel. The horizontal channel is used to allow the glue overflowing horizontally in the glue leveling chamber to enter the glue dispensing channel.

[0009] Furthermore, the dispensing valve block includes a valve block body, a needle block and a cover plate.

[0010] The glue dispensing chamber is located on the side of the valve block body, and the glue dispensing channel is located in the valve block body and penetrates the bottom end of the valve block body;

[0011] The glue drop channel is located on the side of the cover plate, and the cover plate covers the glue spreading chamber;

[0012] The needle block is provided with a glue dispensing hole, and the needle block is located below the glue dispensing channel.

[0013] Furthermore, the bottom end of the glue dropping channel is as wide as the glue leveling chamber, and the glue leveling chamber is as wide as the horizontal channel and the glue dispensing channel.

[0014] Furthermore, the glue drop channel is provided with glue leveling blocks for diverting glue, a plurality of glue leveling blocks are arrayed and distributed in the glue drop channel, and glue leveling channels for glue to pass through are provided between the glue leveling blocks.

[0015] Furthermore, a baffle is provided between the glue-distributing chamber and the glue-dropping channel, and the bottom end of the glue-distributing chamber is connected to the glue-dropping channel;

[0016] A plurality of vertical partition bars are arranged between the glue distributing chamber and the baffle plate, and the vertical partition bars divide the glue distributing chamber into a plurality of reflux channels, and the reflux channels correspond to the glue dispensing holes one by one.

[0017] Furthermore, it also includes a glue pouring pump, and the glue pouring pump is a screw pump.

[0018] Furthermore, it also includes a mounting plate, on which a glue pump fixing seat is provided for fixing the glue filling pump, and the bottom end of the mounting plate is fixedly connected to the glue dispensing valve block.

[0019] Furthermore, the glue pump fixing seat includes a base detachably connected to a mounting plate, a mounting plate is hinged on the base, and the mounting plate cooperates with the base to clamp and fix the glue pump.

[0020] By applying the technical solution of the utility model, through the design of the glue-leveling chamber, the glue can be temporarily stored to keep the glue level horizontal, and the overflowed glue is introduced into the glue dispensing channel through the horizontal channel, so as to maintain the consistency of the glue output between multiple different glue dispensing holes. By adopting the design of multiple glue dispensing holes and glue dispensing channels, multiple glue dispensing operations can be performed at the same time, thereby improving production efficiency. A glue-leveling block is provided in the glue-dropping channel to divert the glue, and multiple glue-leveling blocks are arranged in an array in the glue-dropping channel, and the glue is passed through the glue-leveling channel to ensure the uniform distribution of the glue.

[0021] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures particularly pointed out in the written description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is described in detail below in conjunction with the accompanying drawings to make the above advantages of the present invention more clear.

[0023] Figure 1 It is a schematic diagram of a multi-head glue dispensing valve for glue uniformity in the utility model;

[0024] Figure 2It is a cross-sectional view of a dispensing valve block of a multi-head dispensing valve for uniform glue application in the utility model;

[0025] Figure 3 This is a schematic diagram of a glue dispensing chamber of a glue dispensing multi-head glue dispensing valve of the utility model;

[0026] Figure 4 This is a schematic diagram of a glue drop channel of a multi-head glue dispensing valve for uniform glue in the utility model;

[0027] Figure 5 This is a schematic diagram of the second glue drop channel of an implementation example of a multi-head glue dispensing valve of the utility model;

[0028] Figure 6 This is a schematic diagram of a glue-dispensing chamber of a second implementation example of a glue-dispensing multi-head glue-dispensing valve of the utility model. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0030] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship described in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Reference Figure 1-4 As shown, a multi-head glue dispensing valve for glue spreading includes a glue dispensing valve block 200, wherein a glue dropping channel 300, a glue spreading chamber 400 and a glue dispensing channel 500 are provided in the glue dispensing valve block 200;

[0034] The top end of the glue drop channel 300 is connected to the glue inlet 210 of the glue dispensing valve block 200, and the bottom end of the glue drop channel 300 is connected to the glue leveling chamber 400;

[0035] The bottom end of the dispensing valve block 200 is provided with a plurality of dispensing holes 600, and the plurality of dispensing holes 600 are connected with the dispensing channel 500;

[0036] Among them, the glue-leveling chamber 400 is used to temporarily store glue so that the glue liquid level is horizontal. The top of the glue-leveling chamber 400 is provided with a horizontal channel 700 of the same width as the glue dispensing channel 500. The horizontal channel 700 is used to allow the horizontal overflow of glue in the glue-leveling chamber 400 to enter the glue dispensing channel 500. The design idea of ​​the glue-leveling multi-head glue dispensing valve is to realize the glue-leveling and multi-head glue dispensing operations of glue by setting a glue drop channel 300, a glue-leveling chamber 400 and a glue dispensing channel 500 in the glue dispensing valve block 200. Specifically, the glue enters the glue inlet 210 of the glue dispensing valve block 200 through the glue filling pump 100, enters the glue-leveling chamber 400 through the glue drop channel 300, and then flows to the multiple glue dispensing holes 600 through the glue dispensing channel 500 for dispensing. In order to make the glue evenly distributed in each glue dispensing channel 500, the glue-leveling chamber 400 is used to temporarily store the glue so that the glue liquid level remains horizontal. The top of the glue distributing chamber 400 is connected to a horizontal channel 700 of the same width as the glue dispensing channel 500. When the glue in the glue distributing chamber 400 exceeds a certain level, the excess glue will overflow through the horizontal channel 700 and enter the glue dispensing channel 500, thereby keeping the glue output of each glue dispensing channel 500 consistent.

[0037] The design of the glue leveling chamber 400 allows the glue to be temporarily stored and kept level, ensuring that the glue output is consistent. This can avoid the problem of unstable dispensing quality caused by uneven glue and improve the accuracy and consistency of dispensing. By providing a plurality of dispensing holes 600 and dispensing channels 500 connected thereto at the bottom of the dispensing valve block 200, multiple dispensing operations can be performed simultaneously, thereby improving production efficiency.

[0038] In this embodiment, the dispensing valve block 200 includes a valve block body 220, a needle block 230 and a cover plate 240.

[0039] The glue dispensing chamber 400 is located on the side of the valve block body 220, and the glue dispensing channel 500 is located in the valve block body 220 and penetrates the bottom end of the valve block body 220;

[0040] The glue drop channel 300 is located on the side of the cover plate 240, and the cover plate 240 covers the glue spreading chamber 400;

[0041] The needle block 230 is provided with a dispensing hole, and the needle block 230 is located below the dispensing channel 500 .

[0042] Through the structure of the valve block body 220, the glue dispensing chamber 400 and the glue dispensing channel 500 can be realized in the same component, which simplifies the structure. During processing, the milling cutter mills out the glue dispensing chamber 400 on the side of the valve block body 220, then mills out the horizontal channel 700 on the glue dispensing chamber 400, and finally mills out the glue dispensing channel 500 from the lower end of the valve block body 220 to connect, which is convenient for production and processing. At the same time, by placing the glue dispensing channel 300 on the cover plate 240, it can be easily cleaned and maintained. When it is necessary to clean the glue, just remove the cover plate 240.

[0043] In this embodiment, the bottom end of the glue drop channel 300 is as wide as the glue leveling chamber 400, and the glue leveling chamber 400 is as wide as the horizontal channel 700 and the glue dispensing channel 500. By designing that the bottom end of the glue drop channel 300 is as wide as the glue leveling chamber 400, the flow of glue in the channel can be smooth, avoiding the eddy current and unevenness generated by the glue during the flow process, thereby achieving the leveling of the glue. The glue leveling chamber 400 is as wide as the horizontal channel 700 and the glue dispensing channel 500, ensuring that the horizontal overflow of glue in the glue leveling chamber 400 can smoothly enter the glue dispensing channel 500. In this way, the glue liquid level in the glue leveling chamber 400 can be effectively maintained stable, ensuring the stability of the glue leveling. The leveling of glue and the stability of the glue leveling play a key role in improving the quality of glue dispensing. By designing a reasonable channel width, the uniform distribution of glue during the glue dispensing process can be ensured, thereby improving the accuracy and consistency of glue dispensing.

[0044] Reference Figure 5As shown, in the second embodiment, the glue drop channel 300 is provided with a glue leveling block 310 for diverting glue, and a plurality of the glue leveling blocks 310 are distributed in the glue drop channel 300 in an array, and a glue leveling channel for glue to pass through is provided between the glue leveling blocks 310. Glue has a certain viscosity and a slow circulation speed. The design of the glue leveling block 310 is intended to prevent the glue from being too concentrated, which is not conducive to leveling. When the glue flows through the glue drop channel 300, the glue leveling block 310 will divert the glue to different paths, disperse the glue through the glue leveling channel and guide it to each glue dispensing hole. Such a design can prevent the glue from being too concentrated on a certain glue dispensing hole, resulting in uneven glue dispensing quality.

[0045] By setting the glue-leveling block 310, the glue can be dispersed to different paths so that the glue is evenly distributed in the glue-dropping channel 300. This can prevent the glue from being too concentrated at certain points, thereby achieving a more uniform glue-dropping effect. The leveling effect of the glue depends on the uniform distribution of the glue. By diverting the glue through the glue-leveling block 310, the glue can be better leveled in the glue-dropping channel 300, thereby improving the overall glue-dropping quality. The dispersed flow of the glue helps to control the consistency of the glue-dropping amount. By designing the glue-leveling block 310 and the glue-leveling channel, it can be ensured that the glue is distributed relatively evenly in different glue-dropping holes, thereby reducing the difference in the glue-dropping amount.

[0046] Reference Figure 6 As shown, in the second embodiment, a baffle 410 is provided between the glue-distributing chamber 400 and the glue-dropping channel 300, and the bottom end of the glue-distributing chamber 400 is connected to the glue-dropping channel 300;

[0047] A plurality of vertical partition bars 420 are disposed between the glue dispensing chamber 400 and the baffle plate 410 . The vertical partition bars 420 divide the glue dispensing chamber 400 into a plurality of reflux channels. The reflux channels correspond to the glue dispensing holes one by one.

[0048] The setting of the baffle 410 can reduce the impact of glue flowing from the glue drop channel 300 into the glue uniform chamber 400, and prevent the glue from interfering with the glue leveled in the glue uniform chamber 400. The setting of the vertical partition bar 420 divides the glue uniform chamber 400 into a plurality of reflux channels, ensuring that each reflux channel corresponds to a glue dispensing hole. The purpose of this design is to allow the glue to reflux in the reflux channel and enter the glue dispensing channel 500 again from the position corresponding to the glue dispensing hole to ensure the leveling and uniform distribution of the glue. Through the setting of the baffle 410, the impact of glue flowing from the glue drop channel 300 into the glue uniform chamber 400 can be reduced, the glue in the glue uniform chamber 400 can be kept leveled, and the stability of the glue dispensing quality can be improved. The vertical partition bar 420 divides the glue uniform chamber 400 into a plurality of reflux channels, and corresponds to the glue dispensing holes one by one to achieve the reflux of glue. This ensures that the glue re-enters the dispensing channel 500 from the reflux channel, maintains the uniform distribution of the glue, and improves the consistency of the dispensing quality. By designing the one-to-one correspondence between the reflux channel and the dispensing hole, the amount of glue refluxed from the glue-dispensing chamber 400 to the dispensing channel 500 can be controlled. This helps to achieve precise control of the dispensing amount and improve the accuracy and consistency of the dispensing quality.

[0049] In this embodiment, a glue filling pump is also included, and the glue filling pump 100 is a screw pump. The screw pump is a positive displacement pump that delivers glue through a rotating screw. Its working principle is to suck the glue from the glue inlet 210 into the screw cavity through the rotation of the screw, and then as the screw rotates, the glue is pushed into the dispensing valve block 200 and supplied to the dispensing hole for dispensing. The screw pump has a stable glue supply capacity and can provide a uniform and continuous flow of glue. This is very important for the stability and consistency of the dispensing process, and can ensure the accuracy and consistency of the dispensing amount. The screw pump is suitable for glues of various viscosities and can handle glue supply requirements within different viscosity ranges. Whether it is thicker glue or thinner glue, the screw pump can stably supply it to the dispensing valve block 200.

[0050] The speed of the screw pump can be adjusted to control the supply of glue. In this way, the dispensing amount can be flexibly adjusted according to actual needs, achieving precise control of the dispensing process.

[0051] This embodiment also includes a mounting plate, on which a glue pump fixing seat is provided for fixing the glue filling pump 100, and the bottom end of the mounting plate is fixedly connected to the glue dispensing valve block 200. The design of the mounting plate and the glue pump fixing seat can ensure the stable fixation of the glue filling pump 100. In this way, the movement or loosening of the glue filling pump 100 due to vibration or other factors during the glue dispensing process can be avoided, thereby ensuring the stability and consistency of the glue dispensing process. The introduction of the mounting plate makes the installation and maintenance of the glue filling pump 100 easier. Through the design of the fixing seat, the glue filling pump 100 can be easily disassembled and replaced, reducing the time and workload of installation and maintenance.

[0052] In this embodiment, the glue pump fixing seat includes a base detachably connected to a mounting plate, a mounting plate is hinged on the base, and the mounting plate cooperates with the base to clamp and fix the glue pump 100. The design of the glue pump fixing seat makes the installation and maintenance of the glue pump 100 easier. The base is detachably connected to the mounting plate, which facilitates the disassembly and replacement of the glue pump 100, reducing the time and workload of installation and maintenance. The glue pump 100 is fixed by clamping to ensure its stability and reliability. In this way, the glue pump 100 can be prevented from moving or loosening during the dispensing process, thereby ensuring the stability and consistency of the dispensing process.

[0053] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A multi-head glue dispensing valve, characterized in that: It comprises a glue dispensing valve block (200), wherein the glue dispensing valve block (200) is provided with a glue dropping channel (300), a glue spreading chamber (400) and a glue dispensing channel (500); The top end of the glue drop channel (300) is connected to the glue inlet (210) of the glue dispensing valve block (200), and the bottom end of the glue drop channel (300) is connected to the glue leveling chamber (400); The bottom end of the dispensing valve block (200) is provided with a plurality of dispensing holes (600), and the plurality of dispensing holes (600) are connected to the dispensing channel (500); The glue-distributing chamber (400) is used to temporarily store glue so that the glue liquid level is horizontal. A horizontal channel (700) having the same width as the glue dispensing channel (500) is provided at the top of the glue-distributing chamber (400). The horizontal channel (700) is used to allow the glue that overflows horizontally in the glue-distributing chamber (400) to enter the glue dispensing channel (500).

2. The multi-head glue dispensing valve according to claim 1, characterized in that: The dispensing valve block (200) comprises a valve block body (220), a needle block (230) and a cover plate (240); The glue dispensing chamber (400) is located on the side of the valve block body (220), and the glue dispensing channel (500) is located inside the valve block body (220) and penetrates the bottom end of the valve block body (220); The glue drop channel (300) is located on the side of the cover plate (240), and the cover plate (240) covers the glue spreading chamber (400); The needle block (230) is provided with a glue dispensing hole, and the needle block (230) is located below the glue dispensing channel (500).

3. The multi-head glue dispensing valve according to claim 1, characterized in that: The bottom end of the glue drop channel (300) is as wide as the glue leveling chamber (400), and the glue leveling chamber (400) is as wide as the horizontal channel (700) and the glue dispensing channel (500).

4. The multi-head glue dispensing valve according to claim 1, characterized in that: The glue drop channel (300) is provided with a glue leveling block (310) for diverting glue, a plurality of the glue leveling blocks (310) are arranged in an array in the glue drop channel (300), and glue leveling channels for glue to pass through are provided between the glue leveling blocks (310).

5. The multi-head glue dispensing valve according to claim 1, characterized in that: A baffle (410) is provided between the glue-distributing chamber (400) and the glue-dropping channel (300), and the bottom end of the glue-distributing chamber (400) is in communication with the glue-dropping channel (300); A plurality of vertical partition bars (420) are provided between the glue distributing chamber (400) and the baffle (410), and the vertical partition bars (420) divide the glue distributing chamber (400) into a plurality of reflux channels, and the reflux channels correspond to the glue dispensing holes one by one.

6. The multi-head glue dispensing valve according to claim 1, characterized in that: It also includes a glue pouring pump (100), wherein the glue pouring pump (100) is a screw pump.

7. The multi-head glue dispensing valve according to claim 1, characterized in that: It also comprises a mounting plate, on which a glue pump fixing seat is provided for fixing the glue filling pump (100), and the bottom end of the mounting plate is fixedly connected to the glue dispensing valve block (200).

8. The multi-head glue dispensing valve according to claim 7, characterized in that: The glue pump fixing seat comprises a base detachably connected to a mounting plate, a mounting plate is hinged on the base, and the mounting plate cooperates with the base to clamp and fix the glue pump (100).

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