Wide glue nozzle for coating high-viscosity adhesive

Abstract

The utility model relates to the technical field of gluing equipment, and particularly discloses a wide glue nozzle for coating a high-viscosity adhesive, which comprises a glue nozzle body with a groove and a sinking groove, a plurality of sieve pores are arranged on the side wall of the groove, the sinking groove sleeves the groove, a glue outlet hole is arranged at the bottom of the sinking groove, the glue outlet hole is communicated with the sieve pores through the sinking groove, a feeding runner is arranged on the glue nozzle body, and the feeding runner is communicated with the sieve pores through the sinking groove. The feeding flow channel is directly communicated with the middle of the groove, the distance between the sieve hole closest to the feeding flow channel and the bottom of the groove is larger than the distance between the sieve hole farthest away from the feeding flow channel and the bottom of the groove, and the distance between the sieve hole farthest away from the feeding flow channel and the bottom of the groove is closest. The scheme is used for solving the problem of complex flow channel of the existing wide glue nozzle.

Description

Technical Field

[0001] The utility model relates to the technical field of glue coating equipment, and particularly relates to a wide-width glue nozzle for coating high-viscosity adhesives. Background Technique

[0002] With the development of new energy technologies and the stimulation of market demands, the batteries of new energy vehicles have gradually become larger, the glue coating area has increased accordingly, and the requirements for glue coating speed have become higher and higher.

[0003] There are mainly two traditional glue coating methods. The first one is direct coating using a mixing tube. Since the diameter of the mixing tube is small (the current maximum outlet diameter of the mixing tube is 7 mm), it is generally used in occasions where the number of coated glue strips is small or the beat requirement is very low (such as laboratory products); or a common wide-width glue nozzle is added at the front end of the mixing tube. However, due to structural limitations, if the width of this wide-width glue nozzle is too wide, due to uneven glue distribution, the two sides of the glue strip will be thick and the middle will be thin, and even the problem of broken glue may occur.

[0004] In the prior art, in order to meet the wide-width glue output requirement, a multi-branch wide-width glue nozzle with a patent publication number of CN116550548A has been proposed. This wide-width glue nozzle enables the glue nozzle to have a wider glue output width and achieve uniform glue output in the wide-width direction through a design with a main flow channel and branch flow channels. However, due to the settings of its main flow channel and branch flow channels, the current wide-width glue nozzle brings difficulties in cleaning the glue nozzle. Because the flow channels are complex, the cleaning is very troublesome. Especially for two-component glue that is prone to curing, such complex flow channels are very likely to cause extremely difficult cleaning or even blockage of the flow channels and inability to clean them thoroughly when the glue nozzle is not cleaned in time. Content of the Utility Model

[0005] The utility model aims to provide a wide-width glue nozzle for coating high-viscosity adhesives to solve the problem of complex flow channels existing in the existing wide-width glue nozzles.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A wide-width glue nozzle for coating high-viscosity adhesives includes a glue nozzle body with grooves and sinking grooves. A plurality of sieve holes are arranged on the side wall of the groove. The sinking groove sleeves the groove, and a glue outlet hole is provided at the bottom of the sinking groove. The glue outlet hole is communicated with the sieve holes through the sinking groove. A feed flow channel is provided on the glue nozzle body, and the feed flow channel is directly communicated with the middle of the groove. Among the plurality of sieve holes, the distance between the sieve hole closest to the feed flow channel and the bottom of the groove is greater than the distance between the sieve hole farthest from the feed flow channel and the bottom of the groove, and the distance between the sieve hole farthest from the feed flow channel and the bottom of the groove is the closest.

[0008] The principle and advantages of this solution are as follows: When adopting this solution, the colloid in the feed channel directly enters the groove. Since there is a certain height distance between the sieve holes near the feed channel and the bottom of the groove, the colloid will not be immediately discharged from the sieve holes, but fills along the bottom of the groove to approach the sieve hole farthest from the feed channel. And the sieve hole farthest from the channel is closest to the bottom of the groove. When the colloid can flow out from the sieve hole farthest from the channel, the colloid in the middle part of the groove near the feed channel is also stacked higher, so that the farthest sieve hole and the nearest sieve hole can basically discharge glue simultaneously. Compared with the prior art, this solution can ensure the uniformity of the glue discharge at the beginning of the nozzle without setting a complex channel, thus solving the problem of difficult cleaning caused by the complex channel designed to ensure uniform wide-width glue discharge in the prior art.

[0009] Preferably, as an improvement, the sizes of the plurality of sieve holes are smaller for the sieve holes closer to the feed channel.

[0010] Beneficial effects: In actual use, the greater the pressure on the sieve holes closer to the feed channel, the faster the flow rate of the glue discharged from the sieve holes under greater pressure. If the sizes of the sieve holes are set to be the same, then under the pressure of the continuously injected colloid from the feed channel, the glue discharge speed of the sieve holes near the feed channel position is faster, and it is easy to cause non-uniform glue discharge in the wide-width direction on the same glue discharge cross-section. However, in this solution, by making the sizes of the sieve holes near the feed channel smaller, the position near the sieve holes has the characteristics of fast glue discharge flow rate but small cross-sectional flow rate, while the sieve holes far from the feed channel have a relatively slower glue discharge flow rate but a larger cross-sectional flow rate, thereby further improving the uniformity of glue discharge at different positions, near and far.

[0011] Preferably, as an improvement, the diameter of the sieve holes is less than 4 mm, and all the sieve holes have the same size.

[0012] In the case where the size of the sieve holes is very small, the diameter of the sieve holes is less than 4 mm, such as 3 mm or even 2 mm. If the sieve holes are still set according to different sizes, it is easy to cause blockage of the too-small sieve holes due to the short curing time of the colloid. In this solution, the sieve holes with small sizes are set to be the same to ensure that the sieve holes are not easily blocked and contribute to the uniformity of the colloid flowing out of the nozzle.

[0013] Preferably, as an improvement, the sieve hole farthest from the feed channel is close to the bottom of the groove, so that the fluid in the flow dividing block can be completely discharged from the sieve holes, reducing the residence amount of the colloid in the groove.

[0014] Preferably, as an improvement, the nozzle body includes a glue inlet block, a flow splitting block, and a glue outlet block that are fixedly connected in sequence. The feed flow channel is arranged on the glue inlet block, the groove is arranged on the flow splitting block, flanges are arranged around the flow splitting block, the sunk groove is arranged on the glue outlet block, and the flange is clamped between the glue outlet block and the glue inlet block; This solution realizes the multi-part assembly design of the wide-width nozzle, facilitating the disassembly, cleaning, and replacement of each part.

[0015] Preferably, as an improvement, a first sealing gasket is arranged between the glue inlet block and the flow splitting block, and a second sealing gasket is arranged between the flow splitting block and the glue outlet block to improve the sealing performance between parts and avoid glue leakage.

[0016] Preferably, as an improvement, the groove, sieve holes, sunk groove, glue outlet holes, and feed flow channels on the nozzle body are all formed on the same part.

[0017] Beneficial effects: The groove, sieve holes, sunk groove, glue outlet holes, and feed flow channels are all formed on one part, such as by 3D printing or investment casting, making the entire wide-width nozzle a single part, eliminating the need for sealant design between parts. For highly viscous and easily solidifying colloids, the wide-width nozzle can be used as a consumable. Combining with the integrated design of the wide-width nozzle, it is convenient for part replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of Embodiment 1 of the present invention.

[0019] Figure 2 is Figure 1 the top view of

[0020] Figure 3 is Figure 1 the main view cross-sectional view of

[0021] Figure 4 is Figure 1 the left view cross-sectional view of

[0022] Figure 5 is a three-dimensional structural schematic diagram of Embodiment 2 of the present invention.

[0023] Figure 6 is Figure 5 the main view cross-sectional view of

[0024] Figure 7 is the main view cross-sectional view of Embodiment 3 of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following is further detailed through specific embodiments:

[0026] The reference numerals in the accompanying drawings of the specification include: glue inlet block 1, feed channel 11, flow splitting block 2, groove 21, sieve holes 22, glue outlet block 3, sink 31, glue outlet holes 32, first gasket seal 4, and second gasket 5.

[0027] Example 1

[0028] Combined with Figures 1 to 4 , a wide-width glue nozzle for high-viscosity adhesive coating, comprising a glue nozzle body, which includes a glue inlet block 1, a flow splitting block 2 with a groove 21, and a glue outlet block 3 with a sink 31 and glue outlet holes 32 that are sequentially and fixedly connected by screws. The glue inlet block 1 is processed with a feed channel 11, and the feed channel 11 communicates with the groove 21. The glue inlet block 1 and the flow splitting block 2 are sealed by a first gasket seal 4, and the flow splitting block 2 and the glue outlet block 3 are sealed by a second gasket 5.

[0029] A plurality of sieve holes 22 are opened on the wall of the groove 21. The flow splitting block 2 is inserted into the sink 31 of the glue outlet block 3, and the sink 31 communicates with both the sieve holes 22 and the glue outlet holes 32.

[0030] Among the plurality of sieve holes 22, the distance between the sieve hole 22 closest to the feed channel 11 and the bottom of the groove 21 is greater than the distance between the sieve hole 22 farthest from the feed channel 11 and the bottom of the groove 21, and the distance between the sieve hole 22 farthest from the feed channel 11 and the bottom of the groove 21 is the closest.

[0031] Among the plurality of sieve holes 22, the sieve holes 22 closer to the feed channel are smaller in size, and the sieve hole 22 farthest from the feed channel is in close contact with the bottom of the groove 21.

[0032] After the colloid enters from the glue inlet block 1, it enters the groove 21 along the feed channel 11. The colloid first completely covers the bottom of the groove 21. After the groove 21 is completely covered, the large sieve holes 22 at the two farthest sides start to have colloid flowing out, and at the same time, the small sieve holes 22 at a higher position closest to the feed channel 11 also have colloid flowing out. As the colloid continuously enters the wide-width glue nozzle, the colloid flows out from each sieve hole 22 and then discharges from the glue outlet holes 32 along the sink 31.

[0033] The entire implementation scheme has a simple structure, and the structure of each part is also simple, achieving the reduction of the difficulty of cleaning the glue nozzle on the basis of ensuring wide-width and uniform glue coating.

[0034] Example 2

[0035] Combined with Figure 5 and Figure 6, the difference between the second embodiment and the first embodiment is that the glue inlet block 1, the flow dividing block 2, and the glue outlet block 3 are formed as a whole. In this embodiment, the glue inlet block 1, the flow dividing block 2, and the glue outlet block 3 are formed as a whole by 3D printing, thus eliminating the design of seals between parts. For high-viscosity and easily solidifying colloids, the wide-width nozzle can be used as a consumable. Combining with the integrated design of the wide-width nozzle, it is convenient to replace parts.

[0036] Embodiment Three

[0037] Combined with Figure 7 , the difference between the third embodiment and the first embodiment or the second embodiment is that: the diameter of the sieve holes 22 is less than 4 mm, and all the sieve holes 22 have the same size.

[0038] In this embodiment, when the size requirements for the sieve holes 22 are very small, the diameter of the sieve holes 22 is less than 4 mm, such as 3 mm or even 2 mm, the sizes of the sieve holes 22 are set to be the same to ensure that the sieve holes 22 are not easily blocked and contribute to the uniformity of the colloid flowing out of the nozzle. The above are only the embodiments of the present invention. Specific technical solutions and / or common knowledge such as characteristics well known in the art are not described in detail here. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can still be made, and these should also be regarded as the protection scope of the present invention, which will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.

Claims

1. A wide-width glue nozzle for coating high-viscosity adhesive, comprising a glue nozzle body with a groove and a sink, a plurality of sieve holes are arranged on the side wall of the groove, the sink covers the groove, a glue outlet hole is arranged at the bottom of the sink, and the glue outlet hole is connected with the sieve hole through the sink, characterized in that: A feed channel is provided on the nozzle body, which is directly connected to the middle of the groove. Among the multiple sieve holes, the distance between the sieve hole closest to the feed channel and the bottom of the groove is greater than the distance between the sieve hole farthest from the feed channel and the bottom of the groove, and the distance between the sieve hole farthest from the feed channel and the bottom of the groove is the shortest.

2. A wide-width nozzle for coating high-viscosity adhesive according to claim 1, characterized in that: The closer the plurality of sieve holes are to the feed channel, the smaller the sieve hole size is.

3. The wide-width nozzle for coating high-viscosity adhesive according to claim 1, characterized in that: The diameter of the sieve holes is less than 4 mm, and all the sieve holes have the same size.

4. A wide nozzle for coating high viscosity adhesive according to any one of claims 1 to 3, characterized in that: The screen holes farthest from the feed channel are close to the bottom of the groove.

5. A wide nozzle for coating high viscosity adhesive according to any one of claims 1 to 3, characterized in that: The nozzle body comprises a glue inlet block, a diverter block and a glue outlet block which are fixedly connected in sequence, the feed flow channel is arranged on the glue inlet block, the groove is arranged on the diverter block, flanges are arranged around the diverter block, the sink is arranged on the glue outlet block, and the flange is clamped between the glue outlet block and the glue inlet block.

6. A wide-width nozzle for coating high-viscosity adhesive according to claim 5, characterized in that: A first sealing gasket is arranged between the glue inlet block and the diversion block, and a second sealing gasket is arranged between the diversion block and the glue outlet block.

7. A wide nozzle for coating high viscosity adhesive according to any one of claims 1 to 3, characterized in that: The grooves, sieve holes, sinks, glue outlet holes and feed channels on the nozzle body are all formed on the same part.

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