Multi-head dispensing valve

Abstract

The utility model belongs to the technical field of lamp strip dispensing, and relates to a multi-head dispensing valve which comprises a composite dispensing valve block, the composite dispensing valve block comprises a needle head valve block; the glue inlet part of the needle head valve block is communicated with an external glue supply unit, and the needle head valve block is provided with a plurality of glue dispensing holes and a plurality of flow guide channels in one-to-one correspondence with the glue dispensing holes; the flow guide channels are respectively communicated with the dispensing hole and the glue inlet, and the path lengths of the plurality of flow guide channels are equal. By designing the multiple dispensing holes and the flow guide channels in one-to-one correspondence with the dispensing holes and ensuring that the path lengths of the multiple flow guide channels are equal, the consistency of the glue outlet amounts of the multiple different dispensing holes can be achieved. Therefore, uniform and consistent dispensing quality and effect can be ensured.

Description

Technical Field

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

[0002] In the global environment that advocates energy conservation and environmental protection, LED technology has penetrated into many industries, including general lighting, backlighting, automotive, agriculture, medical, etc. The application fields determine the diversification of LED packaging forms. The COB packaging process usually includes processes such as die bonding, wire bonding, dotting fluorescent glue, drying, etc. When producing COB strips, in order to improve production efficiency, multiple needles are often used for multi-head dispensing during the production of COB strips. This requires a high consistency in the glue output between different dispensing holes of the dispensing valve. The more dispensing holes there are, the higher the difficulty of achieving glue output consistency. Content of the Utility Model

[0003] The purpose of the utility model is to provide a multi-head dispensing valve for maintaining the consistency of the glue output between multiple different dispensing holes in view of the deficiencies of the prior art.

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

[0005] A multi-head dispensing valve includes a composite dispensing valve block, and the composite dispensing valve block includes a needle valve block;

[0006] The glue inlet of the needle valve block is communicated with an external glue supply unit. The needle valve block is provided with a plurality of dispensing holes and a plurality of diversion channels corresponding to the dispensing holes one by one;

[0007] The diversion channels are respectively communicated with the dispensing holes and the glue inlet, and the path lengths of the plurality of diversion channels are all equal.

[0008] Further, the composite dispensing valve block further includes a connection valve block. The connection valve block is located between the needle valve block and the glue filling pump to communicate the glue filling pump and the needle valve block. The connection valve block is used to carry the connection between the composite dispensing valve block and an external fixing member.

[0009] Further, the composite dispensing valve block further includes a spacing valve block. The spacing valve block is located between the needle valve block and the connection valve block to communicate the connection valve block and the needle valve block;

[0010] The spacing valve block is provided with two or more diversion grooves. The diversion grooves communicate the glue inlet of the needle valve block with the connection valve block, and the path lengths of the diversion grooves are all equal.

[0011] Further, the needle valve block is provided with two or more glue inlets corresponding to the diversion grooves one by one. The plurality of diversion channels are respectively communicated with one of the glue inlets, and the path lengths of the plurality of diversion channels are all equal.

[0012] Further, the flow dividing groove is located on the surface of the spacing valve block, and the connecting valve block covers the flow dividing groove.

[0013] Further, the flow guiding channel and the glue inlet of the needle valve block are located on the surface of the needle valve block, and the valve blocks adjacent to the needle valve block cover the flow guiding channel and the glue inlet.

[0014] Further, it further includes a glue filling pump, and the glue filling pump is a screw pump.

[0015] Further, it further includes a mounting back plate, and a glue pump fixing seat is provided on the mounting back plate for fixing the glue filling pump. A valve block seat is provided at the bottom end of the mounting back plate, and the valve block seat is used for connecting and fixing the composite dispensing valve block.

[0016] Further, the glue pump fixing seat includes a base detachably connected to the mounting back plate. A mounting plate is hinged on the base, and the mounting plate cooperates with the base to clamp and fix the glue filling pump.

[0017] Further, the valve block seat communicates with the composite dispensing valve block and the glue filling pump through a connecting member, and the valve block seat is detachably connected to the composite dispensing valve block and the glue filling pump.

[0018] Applying the technical solution of the present utility model, by using a multi-head dispensing valve, glue can be dispensed to multiple parallel lamp strips simultaneously, thereby improving production efficiency. The multi-head dispensing valve can reduce the dispensing time by dispensing through multiple dispensing holes simultaneously, and is suitable for the large-scale roll-to-roll production and processing mode. By designing multiple dispensing holes and corresponding flow guiding channels one by one, and ensuring that the path lengths of the multiple flow guiding channels are equal, the consistency of the glue output amounts between multiple different dispensing holes can be achieved. In this way, the quality and effect of the dispensing can be ensured to be uniform and consistent.

[0019] Other features and advantages of the utility model will be described in the subsequent description, and, in part, will be obvious from the description, or will be understood by implementing the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained through the structures specifically pointed out in the written description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following describes the present utility model in detail with reference to the drawings to make the above advantages of the present utility model more clear.

[0021] Figure 1 is a schematic diagram of a multi-head dispensing valve of the present utility model;

[0022] Figure 2 is a schematic diagram of the composite dispensing valve block of a multi-head dispensing valve of the present utility model;

[0023] Figure 3 is a schematic diagram of the needle valve block of a multi-head dispensing valve of the present utility model. Detailed implementation manners

[0024] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model.

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is the orientation or positional relationship based on the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

[0026] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0027] In the embodiments of the present utility model, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0028] Refer to the attached Figures 1-3 As shown, a multi - head dispensing valve includes a composite dispensing valve block 200, and the composite dispensing valve block 200 includes a needle valve block 210;

[0029] The glue inlet 400 of the needle valve block 210 is communicated with an external glue supply unit, and the needle valve block 210 is provided with a plurality of dispensing holes 300 and a plurality of flow guiding channels 500 corresponding to the dispensing holes 300 one by one;

[0030] The flow guiding channels 500 communicate the dispensing holes 300 and the glue inlet 400 respectively, and the path lengths of the plurality of flow guiding channels 500 are all equal.

[0031] By connecting the glue filling pump 100 and the composite dispensing valve block 200, and simultaneously arranging a plurality of dispensing holes 300 and corresponding diversion channels 500 on the needle valve block 210, the function of dispensing is achieved.

[0032] Through the design of the diversion channels 500, ensuring that the path lengths of the plurality of diversion channels 500 are equal, the consistency of the glue output volume between the plurality of dispensing holes 300 can be achieved. In this way, the quality and effect of dispensing can be guaranteed to be uniform. The design of the multi-head dispensing valve can simultaneously perform dispensing on a plurality of dispensing holes 300, thereby improving production efficiency. Through one dispensing operation, the processing of a plurality of dispensing holes 300 can be completed, adapting to the mass production and processing mode of roll-to-roll. Through the connection between the glue filling pump 100 and the composite dispensing valve block 200, assembly and disassembly can be conveniently carried out. In this way, according to actual requirements, different components can be flexibly adjusted and replaced to adapt to different production requirements and technological processes. Through the connection between the dispensing needle and the dispensing hole 300, it is ensured that the glue can smoothly flow through the diversion channels 500 and uniformly dispense around the light strip. In this way, the stability and reliability of dispensing can be guaranteed. Through the connection between the dispensing needle and the dispensing hole 300, the dispensing needle can perform another shunt during glue output for dam dispensing.

[0033] In this embodiment, the composite dispensing valve block 200 further includes a connection valve block 220. The connection valve block 220 is located between the needle valve block 210 and the glue filling pump 100 to connect the glue filling pump 100 and the needle valve block 210. The connection valve block 220 is used to carry the connection between the composite dispensing valve block 200 and an external fixing member. The glue filling pump 100 is connected to an external glue supply unit, and sucks the glue from the external glue supply unit into the glue filling pump 100. The glue filling pump 100 pushes the glue to the glue inlet 400 of the needle valve block 210 through the glue outlet to achieve the glue inlet.

[0034] The connection valve block 220 is located between the needle valve block 210 and the glue filling pump 100, connects the glue filling pump 100 and the needle valve block 210, and carries the connection between the composite dispensing valve block 200 and an external fixing member. The connection valve block 220 carries the connection between the composite dispensing valve block 200 and an external fixing member to ensure the stability of the composite dispensing valve block 200.

[0035] Through the connection valve block 220, the composite dispensing valve block 200 is connected to an external fixing member, making the composite dispensing valve block 200 have a stable structure. In this way, it can be ensured that there will be no loosening or displacement during use, guaranteeing the stability and consistency of dispensing.

[0036] The design of the connection valve block 220 enables the composite dispensing valve block 200 and the glue filling pump 100 to be conveniently disassembled and replaced. In this way, according to actual requirements, different components can be flexibly adjusted and replaced to adapt to different production requirements and technological processes.

[0037] In this embodiment, the composite dispensing valve block 200 further includes a spacing valve block 230. The spacing valve block 230 is located between the needle valve block 210 and the connection valve block 220 to connect and communicate the connection valve block 220 and the needle valve block 210.

[0038] The spacing valve block 230 is provided with two or more flow splitting grooves 600. The flow splitting grooves 600 connect the glue inlet 400 of the needle valve block 210 and the connection valve block 220, and the path lengths of the flow splitting grooves 600 are all equal. When the number of dispensing holes is large, the glue enters the flow splitting grooves 600 from the glue filling pump 100 through the connection valve block 220. The flow splitting grooves 600 evenly split the glue to the glue inlet 400 of the needle valve block 210. Through the diversion channels 500, the glue at the glue inlet 400 is evenly distributed to each dispensing hole 300. The diversion channels 500 guide the glue from the glue inlet 400 to the positions corresponding to the dispensing holes 300 one by one.

[0039] Through the design of the flow splitting grooves 600, the glue can be evenly split to the glue inlet 400 of the needle valve block 210, avoiding excessive concentration of the glue on some of the dispensing holes 300 and reducing waste of the glue. The flow splitting grooves 600 evenly split the glue to the glue inlet 400 of the needle valve block 210, and then through the diversion channels 500, the glue is evenly distributed to each dispensing hole 300. This can ensure the consistency of the glue output between multiple dispensing holes 300, improving the uniformity and quality of dispensing. When a large number of dispensing holes 300 need to be processed, through the design of the flow splitting grooves 600, the glue can be evenly distributed to each dispensing hole 300 at the glue inlet 400, improving production efficiency and dispensing consistency.

[0040] In this embodiment, the needle valve block 210 is provided with two or more glue inlets 400 corresponding to the flow splitting grooves 600 one by one. A plurality of the diversion channels 500 are respectively communicated with one of the glue inlets 400, and the path lengths of the plurality of the diversion channels 500 are all equal.

[0041] There is a one-to-one correspondence between each glue inlet 400 and the flow splitting groove 600, that is, each glue inlet 400 corresponds to one flow splitting groove 600. When the glue enters the needle valve block 210 from the glue filling pump 100, through the flow splitting grooves 600, the glue is split to the corresponding glue inlet 400. Each diversion channel 500 is connected to one glue inlet 400, and the glue is guided from the glue inlet 400 to the corresponding dispensing hole 300 through the diversion channel 500.

[0042] Through the design of the one-to-one correspondence between the glue inlets 400 and the flow splitting grooves 600, it is ensured that the glue reaches the corresponding glue inlets 400 from the flow splitting grooves 600, and then is evenly distributed to each dispensing hole 300 through the diversion channels 500. This can ensure the consistency of the glue output between multiple dispensing holes 300, improving the uniformity and quality of dispensing.

[0043] The needle valve block 210 is provided with a plurality of glue inlets 400 and flow guide channels 500, which can meet the requirements of processing multiple dispensing holes 300. Through the design of the shunt grooves 600 and the flow guide channels 500, the uniform distribution of glue can be realized, improving the production efficiency and dispensing consistency. Through the design of one-to-one correspondence between the glue inlets 400 and the shunt grooves 600, complex structures and operation steps can be reduced. This can simplify the design and operation of the equipment, improving the production efficiency and operation convenience.

[0044] In this embodiment, the shunt grooves 600 are located on the surface of the spacing valve block 230, and the connecting valve block 220 covers the shunt grooves 600. The shunt grooves 600 being located on the surface of the spacing valve block 230 facilitates processing and manufacturing on the spacing valve block 230. The design of the shunt grooves 600 can, through the processing technology of the spacing valve block 230, shunt the glue to the corresponding glue inlets 400. This can simplify the manufacturing process, improve the production efficiency and reduce the manufacturing cost. The design of the shunt grooves 600 enables the connecting valve block 220 to directly cover above the shunt grooves 600, simplifying the structure and operation steps. This can simplify the design and operation of the equipment, improving the production efficiency and operation convenience.

[0045] In this embodiment, the flow guide channels 500 and the glue inlets 400 of the needle valve block 210 are located on the surface of the needle valve block 210, and the valve blocks adjacent to the needle valve block 210 cover the flow guide channels 500 and the glue inlets 400.

[0046] The flow guide channels 500 and the glue inlets 400 being located on the surface of the needle valve block 210 facilitates processing and manufacturing. At the same time, the covering of the adjacent valve blocks forms a closed flow guide channel 500, simplifying the processing difficulty of the flow guide channel 500 and improving the production efficiency. The covering of the adjacent valve blocks forms a closed flow guide channel 500, which can effectively control the flow direction of the glue, preventing the glue from overflowing or flowing to other areas where dispensing is not required. This can maintain the accuracy and consistency of dispensing.

[0047] In this embodiment, a glue filling pump is further included, and the glue filling pump 100 is a screw pump. A screw pump is a positive displacement pump, which consists of a rotating screw and a fixed housing or sleeve. The screw usually consists of a threaded screw and a screw sleeve. When the screw rotates, the glue is sucked into the gaps of the screw threads and then pushed to the outlet of the screw. The screw pump has a high conveying capacity and can effectively convey the glue from the glue supply unit to the needle valve block 210, improving the production efficiency. The screw pump adopts the structure of a positive displacement pump, which can stably convey the glue, ensuring the continuous supply of glue during the dispensing process. The screw pump is suitable for glues with different viscosities and can meet the requirements of different application scenarios.

[0048] In this embodiment, it further includes an installation backboard 700. A glue pump fixing seat is provided on the installation backboard 700 for fixing the glue filling pump 100. A valve block seat 900 is provided at the bottom end of the installation backboard 700, and the valve block seat 900 is used to connect and fix the composite dispensing valve block 200. Through the glue pump fixing seat and the valve block seat 900 of the installation backboard 700, the glue filling pump 100 and the composite dispensing valve block 200 can be stably fixed. This can ensure the stability and reliability of the dispensing equipment. The design of the installation backboard 700 enables the glue filling pump 100 and the composite dispensing valve block 200 to be conveniently installed and replaced. In this way, different components can be flexibly adjusted and replaced according to actual needs to adapt to different production requirements and technological processes. By means of the installation backboard 700, the fixing process of the glue filling pump 100 and the composite dispensing valve block 200 can be simplified. This can simplify the operation of the equipment and improve production efficiency and operation convenience.

[0049] In this embodiment, the glue pump fixing seat includes a base 810 detachably connected to the installation backboard 700. A mounting plate 820 is hinged on the base 810, and the mounting plate 820 and the base 810 cooperate to clamp and fix the glue filling pump 100. The glue pump fixing seat and the installation backboard 700 are detachably connected. This can facilitate assembly and disassembly, and is convenient for maintenance and replacement. Through the clamping and fixing of the base 810 and the mounting plate 820, the stability of the glue filling pump 100 can be maintained, avoiding loosening or displacement problems during operation.

[0050] In this embodiment, the valve block seat 900 connects the composite dispensing valve block 200 and the glue filling pump 100 through a connecting member, and the valve block seat 900 is detachably connected to the composite dispensing valve block 200 and the glue filling pump 100. The valve block seat 900 and the connecting member, the composite dispensing valve block 200 and the glue filling pump 100 are detachably connected. This can facilitate assembly and disassembly, and is convenient for maintenance and replacement. The design of the connecting member can be adjusted as needed to adapt to the connection requirements of different composite dispensing valve blocks 200 and glue filling pumps 100. Through the design of the connecting member, the glue can smoothly flow from the glue filling pump 100 through the connecting member into the composite dispensing valve block 200, maintaining the continuous flow of the glue.

[0051] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A multi-head dispensing valve, characterized in that: It comprises a composite dispensing valve block (200), wherein the composite dispensing valve block (200) comprises a needle valve block (210); The glue inlet (400) of the needle valve block (210) is connected to an external glue supply unit, and the needle valve block (210) is provided with a plurality of glue dispensing holes (300) and a plurality of flow guide channels (500) corresponding one-to-one to the glue dispensing holes (300); The flow guide channels (500) are respectively connected to the glue dispensing hole (300) and the glue inlet (400), and the path lengths of the plurality of flow guide channels (500) are all equal.

2. The multi-head dispensing valve according to claim 1, characterized in that: The composite dispensing valve block (200) further comprises a connecting valve block (220), wherein the connecting valve block (220) is located between the needle valve block (210) and the dispensing pump (100) and connects the dispensing pump (100) and the needle valve block (210), and the connecting valve block (220) is used to support the connection between the composite dispensing valve block (200) and an external fixing part.

3. The multi-head dispensing valve according to claim 2, characterized in that: The composite dispensing valve block (200) further comprises a spacing valve block (230), wherein the spacing valve block (230) is located between the needle valve block (210) and the connecting valve block (220) and communicates with the connecting valve block (220) and the needle valve block (210); The spacing valve block (230) is provided with two or more diverter grooves (600), and the diverter grooves (600) are connected to the glue inlet (400) of the needle valve block (210) and the connecting valve block (220), and the path lengths of the diverter grooves (600) are all equal.

4. The multi-head dispensing valve according to claim 3, characterized in that: The needle valve block (210) is provided with two or more glue inlet locations (400) corresponding one to one with the diversion grooves (600), and the plurality of flow guide channels (500) are respectively connected to one of the glue inlet locations (400), and the path lengths of the plurality of flow guide channels (500) are all equal.

5. The multi-head dispensing valve according to claim 3, characterized in that: The diverter groove (600) is located on the surface of the spacing valve block (230), and the connecting valve block (220) covers the diverter groove (600).

6. The multi-head dispensing valve according to any one of claims 2 or 3, characterized in that: The flow guide channel (500) and the glue inlet (400) of the needle valve block (210) are located on the surface of the needle valve block (210), and the valve blocks adjacent to the needle valve block (210) cover the flow guide channel (500) and the glue inlet (400).

7. The multi-head 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.

8. The multi-head dispensing valve according to claim 1, characterized in that: It also includes a mounting plate (700), on which a glue pump fixing seat is provided for fixing the glue filling pump (100), and a valve block seat (900) is provided at the bottom end of the mounting plate (700), and the valve block seat (900) is used to connect and fix the composite glue dispensing valve block (200).

9. The multi-head dispensing valve according to claim 8, characterized in that: The glue pump fixing seat comprises a base (810) detachably connected to a mounting plate (700), a mounting plate (820) is hingedly connected to the base (810), and the mounting plate (820) cooperates with the base (810) to clamp and fix the glue pump (100).

10. The multi-head dispensing valve according to claim 8, characterized in that: The valve block seat (900) is connected to the composite dispensing valve block (200) and the glue pouring pump (100) via a connecting piece, and the valve block seat (900) is detachably connected to the composite dispensing valve block (200) and the glue pouring pump (100).

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