Glue outlet brush capable of heating hot melt glue

Abstract

The utility model relates to a glue outlet brush capable of heating hot melt glue, which comprises a cover body, a fixing head and a glue outlet component, the fixing head is positioned between the glue outlet component and the cover body, a glue flow channel is arranged on the cover body, the glue outlet component comprises a glue outlet and bristles, the glue outlet is communicated with the glue flow channel, and the bristles are positioned in the circumferential direction of the glue outlet. The cover body comprises an upper connecting cover and a lower connecting cover which are detachably connected, the glue discharging assembly comprises a plurality of heating blocks arranged in the circumferential direction of the glue flowing channel, an upper heat conduction plate arranged above the heating blocks and a lower heat conduction plate arranged below the heating blocks, and the glue flowing channel is arranged on the upper heat conduction plate and the lower heat conduction plate in a penetrating mode; the cover body and the fixing head are both made of heat-resistant materials, and by the adoption of the scheme, the glue outlet brush capable of heating the hot melt glue can continuously heat the hot melt glue in the cover body so as to reduce the situation that the hot melt glue flowing to the glue outlet is cooled and solidified.

Description

Technical Field

[0001] This utility model relates to brushes, and more particularly to a dispensing brush for heating hot melt adhesive. Background Technology

[0002] A glue dispensing brush is a tool specifically designed for applying hot melt adhesives or other adhesives. It is usually integrated into the outlet of a hot melt adhesive equipment. Its main function is to evenly spread the flowing hot melt adhesive onto the target surface, thereby improving the efficiency and quality of the application.

[0003] Existing glue dispensing brushes, such as CN202421248422.6, a screw-cap type self-dispensing glue brush, do not have a heating function. They are easy to install and replace by detaching the screw cap from the glue bottle, and also convenient to clean or replace the brush. However, when the ambient temperature is low or the hot melt adhesive has poor fluidity, the glue dispensing brush may encounter coating difficulties. This is because the hot melt adhesive cools down quickly and may partially solidify before reaching the shoe surface, resulting in uneven coating or ineffective adhesion. At the same time, the fluidity and spreadability of the hot melt adhesive are affected during the cooling process, thereby reducing work efficiency. Operators may need to wait longer to complete the same amount of work, or additional operating steps may be required to ensure good bonding results.

[0004] Therefore, how to keep the hot melt adhesive flowing out of the dispensing brush heated to reduce the cooling and curing speed has become a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a hot melt adhesive dispensing brush that can heat the hot melt adhesive by continuously heating the hot melt adhesive placed in the cover body, thereby reducing the occurrence of the hot melt adhesive flowing to the dispensing port cooling and solidifying.

[0006] To achieve the above objectives, this utility model provides the following technical solution: It includes a cover, a fixing head, and a dispensing assembly. The fixing head is located between the dispensing assembly and the cover, and the cover has a dispensing channel. The dispensing assembly includes a dispensing port communicating with the dispensing channel and bristles located around the dispensing port. The cover includes a detachably connected upper and lower connecting cover. The dispensing assembly includes several heating blocks arranged around the dispensing channel, an upper heat-conducting plate above each heating block, and a lower heat-conducting plate below each heating block. The dispensing channel passes through the upper and lower heat-conducting plates. Both the cover and the fixing head are made of heat-resistant material.

[0007] The present invention is further configured such that: each of the heating blocks includes an upper working section that is attached to the upper heat-conducting plate, a lower working section that is attached to the lower heat-conducting plate, and a support section located between the upper working section and the lower working section, and the lower heat-conducting plate is provided with limiting protrusions at both ends of each lower working section.

[0008] The present invention is further configured such that: the glue dispensing assembly includes a partition sleeve located between the upper heat-conducting plate and the lower heat-conducting plate, and a filter sleeve located inside the partition sleeve; the glue dispensing channel is located inside the partition sleeve and the circumferential direction of the filter sleeve is fitted with the inner wall of the glue dispensing channel; the filter sleeve is detachably connected to the upper heat-conducting plate.

[0009] The present invention is further configured such that: the bottom of the filter sleeve includes a plurality of filter holes that communicate with the glue outlet, and each filter hole is arranged in a constricted manner from top to bottom.

[0010] The present invention is further configured such that: the filter sleeve includes a sealing ring, the diameter of the sealing ring is larger than the top diameter of the adhesive flow channel and abuts against the upper heat-conducting plate, the upper heat-conducting plate is provided with a plurality of connecting blocks corresponding to the sealing ring, each connecting block is arranged in a trapezoidal shape that is narrower at the top and wider at the bottom, and the sealing ring is provided with a connecting slot corresponding to each connecting block, the sealing ring is provided with a insertion hole, and the upper heat-conducting plate is provided with a screw hole.

[0011] The present invention is further configured such that: the upper connecting cover includes a connecting section that fits against the inner wall of the lower connecting cover and a mating section located above the lower connecting cover, the mating section being detachably connected to the lower connecting cover.

[0012] The present invention is further configured such that: the mating section is provided with a plurality of mating blocks made of a material that is prone to deformation along the circumference of the lower connecting cover; each mating block includes an insertion section and a limiting section; each limiting section is located below the corresponding insertion section and has a width greater than the corresponding insertion section; the lower connecting cover is provided with a mating groove corresponding to each mating block; and the lower connecting cover is provided with a limiting block located above the limiting section within each mating groove.

[0013] By adopting the above technical solution, the upper connecting cover can be removed to place the hot melt adhesive on top of the lower connecting cover, and then the upper connecting cover can be installed on top of the lower connecting cover. When the current passes through the heating wire on the heating block, the heat can be transferred through the heating block to the upper and lower heat-conducting plates, and then the heat can be transferred through the upper heat-conducting plate to the hot melt adhesive located above the upper heat-conducting plate. This causes the hot melt adhesive, which is in a liquid state under heating, to flow downwards to the glue channel and then flow out from the glue outlet to reach the shoe upper and sole that need to be bonded, thereby achieving the bonding of the shoe upper and sole. This can greatly reduce the occurrence of uneven coating or ineffective bonding and the impact on fluidity and spreadability caused by the cooling and solidification of the hot melt adhesive during the process from the cover to the glue outlet. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is an assembly drawing illustrating a specific embodiment of the present utility model;

[0016] Figure 2 This is a cross-sectional view of the present invention;

[0017] Figure 3 This is an exploded view of the present invention;

[0018] Figure 4 This is an exploded view of the cross-section of this utility model;

[0019] Figure 5 for Figure 4 Enlarged view of A in the middle;

[0020] Figure 6 for Figure 4 Enlarged view of B in the middle;

[0021] Figure 7 for Figure 4 Enlarged view of C;

[0022] Figure 8 for Figure 4 A magnified view of D.

[0023] In the diagram: 1-cover, 11-upper connecting cover, 111-connecting section, 112-mating section, 12-lower connecting cover, 121-mating groove, 122-limiting block;

[0024] 2-Fixing head, 21-Glue flow channel;

[0025] 3-Dispensing assembly, 31-Dispensing port, 32-Brush bristles, 33-Heating block, 331-Upper working section, 332-Lower working section, 333-Support section, 34-Upper heat-conducting plate, 341-Connecting insert, 342-Screw hole, 35-Lower heat-conducting plate, 351-Limiting protrusion, 36-Separating sleeve, 37-Filter sleeve, 371-Filter hole, 372-Sealing ring, 3721-Connecting slot, 3722-Insertion hole;

[0026] 4-Matching insert block, 41-Installation section, 42-Limiting section. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figures 1-8 As shown, this utility model discloses a hot melt adhesive dispensing brush, including a cover body 1, a fixing head 2, and an adhesive dispensing assembly 3. The fixing head 2 is located between the adhesive dispensing assembly 3 and the cover body 1, and the cover body 1 is provided with an adhesive flow channel 21. The adhesive dispensing assembly 3 includes an adhesive outlet 31 communicating with the adhesive flow channel 21 and brush bristles 32 located around the adhesive outlet 31. The cover body 1 includes an upper connecting cover 11 and a lower connecting cover 12 that are detachably connected by fastening or other means. After the liquid hot melt adhesive is placed into the cover body 1, it will flow to the adhesive outlet 31 through the adhesive flow channel 21 on the cover body 1. To adapt to different application needs, the glue outlet 31 can be designed to be adjustable. The figure only shows a simplified illustration of the glue outlet 31. After the hot melt adhesive flows from the glue outlet 31 to the shoe upper and sole that need to be bonded, the brush bristles 32 can be used to contact the hot melt adhesive and spread it evenly, thus facilitating the bonding of the shoe. The glue dispensing component 3 includes several heating blocks 33 arranged circumferentially in the glue flow channel 21, an upper heat-conducting plate 34 made of copper or aluminum with good dentin heat performance above each heating block 33, and a lower heat-conducting plate 35 below each heating block 33. The lower heat-conducting plate 35 is connected to the solid... The fixed head 2 is fixedly connected, and the glue flow channel 21 is disposed through the upper heat-conducting plate 34 and the lower heat-conducting plate 35. The cover 1 and the fixed head 2 are both made of heat-resistant materials such as polypropylene and silicone rubber (a temperature regulator is set on the lower connecting cover 12, which is not shown in the figure and the wiring method and working principle are existing technologies and will not be described in detail here). By activating the temperature regulator, heating wires (not shown in the figure) will be fixedly installed on each heating block 33 when plugged in. The upper connecting cover 11 can be removed to place hot melt glue on the top of the lower connecting cover 12, and then the upper connecting cover 11 is installed on top of the lower connecting cover 12. When the current passes through... The heating wire on the heating block 33 can then transfer heat to the upper heat-conducting plate 34 and the lower heat-conducting plate 35, thereby transferring the heat to the hot melt adhesive located above the upper heat-conducting plate 34. This causes the hot melt adhesive, which is in a liquid state under heating, to flow downwards to the glue flow channel 21 and then out of the glue outlet 31 to reach the shoe upper and sole that need to be bonded, thus achieving the bonding of the shoe upper and sole. This can greatly reduce the occurrence of uneven coating or ineffective bonding caused by the cooling and solidification of the hot melt adhesive during the process from inside the cover 1 to the glue outlet 31, and also reduce the impact on the fluidity and spreadability.

[0029] Each heating block 33 includes an upper working section 331 that is attached to the upper heat-conducting plate 34, a lower working section 332 that is attached to the lower heat-conducting plate 35, and a support section 333 located between the upper working section 331 and the lower working section 332. The lower heat-conducting plate 35 is provided with limiting protrusions 351 at both ends of each lower working section 332. Since the heating block 33 includes the upper working section 331, the lower working section 332, and the support section 333, the presence of the support section 333 can effectively separate the upper working section 331 and the lower working section 332. The distance between the upper working section 331 and the lower working section 332 allows the upper working section 331 to transfer heat to the upper heat-conducting plate 34 and the lower working section 332 to transfer heat to the lower heat-conducting plate 35, thereby heating the hot melt adhesive located in the cover 1. At the same time, since the upper heat-conducting plate 34 is attached to the upper working section 331 and the lower heat-conducting plate 35 is attached to the lower working section 332, the upper working section 331 and the lower working section 332 can increase the contact area with the upper heat-conducting plate 34 and the lower heat-conducting plate 35, thereby stably achieving the attachment with the upper and lower heat-conducting plates 35 and transferring heat to the hot melt adhesive.

[0030] The glue dispensing assembly 3 also includes a partition sleeve 36 located between the upper heat-conducting plate 34 and the lower heat-conducting plate 35, and a filter sleeve 37 located within the partition sleeve 36. The glue flow channel 21 is located within the partition sleeve 36, and the circumferential direction of the filter sleeve 37 is fitted with the inner wall of the glue flow channel 21. The filter sleeve 37 is detachably connected to the upper heat-conducting plate 34. 1. Since the partition sleeve 36 is located within the glue flow channel 21 and is fixed to the upper heat-conducting plate 34 and the lower heat-conducting plate 35, the partition sleeve 36 can separate the hot melt glue flowing towards the glue dispensing port 31 from the heating block 33, thereby reducing the occurrence of liquid hot melt glue falling downwards onto the surface of the heating block 33; 2. In addition, since the filter sleeve 37 itself has a filtering function, it can separate various impurities that may be mixed into the hot melt glue during production or use, such as dust, metal shavings, or other particles, from flowing out through the glue dispensing port 31, thus preventing them from reaching the sole and upper of the shoe, reducing problems such as poor adhesion or air bubbles at the adhesive points caused by these substances.

[0031] Preferably, the bottom of the filter sleeve 37 includes several filter holes 371 that communicate with the glue outlet 31. Each filter hole 371 is designed to be constricted from top to bottom. Therefore, when the hot melt adhesive flows into the filter sleeve 37, it will first reach the top of each filter hole 371, so that more hot melt adhesive can enter the filter hole 371 per unit time. At this time, if there are large particles of impurities, they can be intercepted by the bottom of each filter hole 371 and cannot flow out of the filter sleeve 37. In addition, it is worth noting that the parameter of the minimum inner diameter of each filter hole 371 should be set according to the actual volume of impurities in the hot melt adhesive. It should be smaller than the volume of the impurities in order to achieve the interception of impurities.

[0032] The filter sleeve 37 includes a sealing ring 372. The diameter of the sealing ring 372 is larger than the top diameter of the adhesive flow channel 21 and abuts against the upper heat-conducting plate 34. The upper heat-conducting plate 34 is provided with a plurality of connecting blocks 341 corresponding to the sealing ring 372. Each connecting block 341 is arranged in a trapezoidal shape, narrower at the top and wider at the bottom. The sealing ring 372 is provided with a connecting slot 3721 corresponding to each connecting block 341. The sealing ring 372 is provided with a insertion hole 3722. The upper heat-conducting plate 34 is provided with a screw hole 342. Because the diameter of the sealing ring 372 is larger than the top diameter of the adhesive flow channel 21 and abuts against the upper heat-conducting plate 34, the hot melt adhesive flowing in from the cover 1 is difficult to pass over the sealing ring 372 and flow between the sealing ring 372 and the adhesive flow channel 21 and flow to each heating block 33. This reduces the likelihood of hot melt adhesive falling onto the heating block 33. Since the connecting insert 341 is located in the corresponding connecting slot 3721 on the sealing ring 372 during installation, the sealing ring 372 of the filter sleeve 37 can be stably positioned on the upper heat-conducting plate 34 and cannot fall down. This facilitates the insertion of bolts (not shown in the figure) into the insertion hole 3722 and their threaded engagement with the screw hole 342. This prevents the filter sleeve 37 from rotating relative to the upper heat-conducting plate 34 and keeps it stably positioned between the upper heat-conducting plate 34 and the lower heat-conducting plate 35. When it is necessary to remove the filter sleeve 37 for cleaning, the sealing ring 372 can be removed from the upper heat-conducting plate 34 and the entire filter sleeve 37 can be removed by first removing each bolt and then separating each connecting insert 341 from the connecting slot 3721.

[0033] The upper connecting cover 11 includes a connecting section 111 that fits against the inner wall of the lower connecting cover 12 and a mating section 112 located above the lower connecting cover 12. The mating section 112 is detachably connected to the lower connecting cover 12 by means of fastening, magnetic attraction, etc. Since the connecting section 111 fits against the inner wall of the lower connecting cover 12 and the mating section 112 is located above the lower connecting cover 12, the contact area between the upper connecting cover 11 and the lower connecting cover 12 can be effectively increased, thereby reducing the occurrence of hot melt adhesive flowing out from the connection between the upper connecting cover 11 and the lower connecting cover 12.

[0034] The mating section 112 protrudes circumferentially from the lower connecting cover 12 with several mating blocks 4 made of easily deformable materials such as rubber. Each mating block 4 includes an insertion section 41 and a limiting section 42. Each limiting section 42 is located below the corresponding insertion section 41 and its width is greater than that of the corresponding insertion section 41. The lower connecting cover 12 is provided with a mating groove 121 corresponding to each mating block 4. The lower connecting cover 12 has a limiting block 122 protruding above the limiting section 42 within each mating groove 121. The width of the limiting segment 42 is greater than that of the corresponding insertion segment 41. Therefore, when the upper connecting cover 11 is installed onto the lower connecting cover 12, each mating insertion block 4 on the upper connecting cover 11 will enter the corresponding mating groove 121. Since each limiting segment 42 will enter the mating groove 121 first, it is necessary to forcibly pass over the corresponding limiting block 122 so that each limiting block 122 is located above the corresponding limiting segment 42, thereby achieving stable positioning of each mating insertion block 4 within the lower connecting cover 12 and thus realizing the assembly of the upper connecting cover 11 and the lower connecting cover 12.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dispensing brush for heating hot melt adhesive, comprising a cover, a fixing head, and a dispensing assembly, wherein the fixing head is located between the dispensing assembly and the cover, and the cover is provided with an adhesive flow channel; the dispensing assembly includes an adhesive outlet communicating with the adhesive flow channel and bristles located circumferentially around the adhesive outlet, characterized in that: The cover includes a detachably connected upper cover and a lower cover. The glue dispensing assembly includes several heating blocks arranged circumferentially in the glue dispensing channel, an upper heat-conducting plate arranged above each heating block, and a lower heat-conducting plate arranged below each heating block. The glue dispensing channel is arranged through the upper heat-conducting plate and the lower heat-conducting plate. The cover and the fixing head are both made of heat-resistant material.

2. The glue brush capable of heating hot melt glue according to claim 1, characterized in that: Each of the heating blocks includes an upper working section that is attached to the upper heat-conducting plate, a lower working section that is attached to the lower heat-conducting plate, and a support section located between the upper working section and the lower working section. The lower heat-conducting plate is provided with limit protrusions at both ends of each lower working section.

3. The glue brush capable of heating hot melt glue according to claim 1 or 2, characterized in that: The dispensing assembly also includes a partition sleeve located between the upper heat-conducting plate and the lower heat-conducting plate, and a filter sleeve located inside the partition sleeve. The dispensing channel is located inside the partition sleeve, and the circumferential direction of the filter sleeve is in contact with the inner wall of the dispensing channel. The filter sleeve is detachably connected to the upper heat-conducting plate.

4. The glue applicator brush capable of heating hot melt glue according to claim 3, wherein: The bottom of the filter sleeve includes several filter holes that communicate with the glue outlet, and each filter hole is designed to be narrowed from top to bottom.

5. The glue applicator brush capable of heating hot melt glue according to claim 3, wherein: The filter sleeve includes a sealing ring, the diameter of which is larger than the top diameter of the adhesive flow channel and abuts against the upper heat-conducting plate. The upper heat-conducting plate is provided with a number of connecting blocks corresponding to the sealing ring. Each connecting block is arranged in a trapezoidal shape that is narrower at the top and wider at the bottom, and the sealing ring is provided with a connecting slot for each connecting block. The sealing ring is provided with a insertion hole, and the upper heat-conducting plate is provided with a screw hole.

6. The glue applicator brush capable of heating hot melt glue according to claim 3, wherein: The upper connecting cover includes a connecting section that fits against the inner wall of the lower connecting cover and a mating section located above the lower connecting cover. The mating section is detachably connected to the lower connecting cover.

7. The glue applicator brush capable of heating hot melt glue according to claim 6, wherein: The mating section has several mating blocks made of a material that is prone to deformation protruding along the circumference of the lower connecting cover. Each mating block includes an insertion section and a limiting section. Each limiting section is located below the corresponding insertion section and its width is greater than that of the corresponding insertion section. The lower connecting cover is provided with a mating groove corresponding to each mating block. The lower connecting cover has a limiting block protruding above the limiting section in each mating groove.

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