Multi-layer heat insulation glue gun structure

Abstract

The utility model discloses a multi-layer heat insulation glue gun structure, which belongs to the technical field of hot melt glue gun heat insulation structures and comprises a hot melt glue gun body, a metal heating body is arranged in the hot melt glue gun body, a metal glue outlet nozzle is arranged on the metal heating body, multi-layer heat insulation cotton is arranged on the periphery of the metal heating body, and a nylon heat insulation sleeve is arranged on the periphery of one end of the multi-layer heat insulation cotton. The nylon heat insulation sleeve is connected with one end of the hot melt glue gun body in a buckled mode, a silica gel piece is arranged on the periphery of the nylon heat insulation sleeve, the silica gel piece further wraps the metal glue outlet nozzle, and the silica gel piece is fixedly connected with one end of the hot melt glue gun body. The metal heating body is prevented from making direct contact with the hot melt glue gun body, the temperature of a shell of the hot melt glue gun body is reduced, the nylon heat insulation sleeve is further arranged on the periphery of the multiple layers of heat insulation cotton in a sleeving mode, heat insulation and fixation of the metal heating body are more effective, finally, the nylon heat insulation sleeve and the metal glue outlet nozzle are wrapped with the silica gel piece, and the risk of scalding caused by mistaken touch is completely avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of thermal insulation structures of hot melt glue guns, and more specifically relates to a multi-layer thermal insulation glue gun structure. Background Art

[0002] The metal melt glue heating element of a conventional hot melt glue gun is generally installed directly inside the product, and the heating element is in direct contact with the plastic part of the gun shell. The metal glue nozzle connected to the heating element generally has two structures: one is that the glue nozzle is directly exposed outside the product glue shell, which poses a great risk of touch burns; the other is to put a single layer of silicone insulation sleeve on the exposed metal glue nozzle, and the front end of the glue nozzle will still expose 1-10mm of metal body, which poses a risk of touch burns, and the silicone insulation sleeve may also fall off. Utility Model Content

[0003] The main purpose of the utility model is to provide a multi-layer heat-insulating glue gun structure, which blocks or seals the heat generated by the metal heating element inside the hot melt glue gun.

[0004] According to the first aspect of the present utility model, a multi-layer thermal insulation glue gun structure is provided, including a hot melt glue gun body, a metal heating element is provided in the hot melt glue gun body, a metal glue nozzle is provided on the metal heating element, and multiple layers of thermal insulation cotton are provided on the periphery of the metal heating element. A nylon thermal insulation sleeve is provided on the periphery of one end of the multi-layer thermal insulation cotton, and the nylon thermal insulation sleeve is snap-fitted and connected to one end of the hot melt glue gun body. A silicone piece is provided on the periphery of the nylon thermal insulation sleeve, and the silicone piece also wraps the metal glue nozzle. The silicone piece is fixedly connected to one end of the hot melt glue gun body.

[0005] In a specific embodiment of the present invention, an annular groove is provided on the outer side of the nylon insulation sleeve, and an annular portion adapted to the annular groove is provided at one end of the hot melt glue gun body close to the metal glue nozzle, and the annular portion is installed in the annular groove.

[0006] In a specific embodiment of the present invention, the metal heating element is provided with a second funnel portion and a second cylindrical portion, the second funnel portion is provided with a first end and a second end, the inner diameter of the first end is larger than the inner diameter of the second end, the first end is connected to the second cylindrical portion, the second end is connected to the metal glue nozzle, the inner diameter of the metal glue nozzle is equal to the inner diameter of the second end, and the length of the second funnel portion is smaller than the length of the second cylindrical portion.

[0007] In a specific embodiment of the present invention, the multi-layer thermal insulation cotton is provided with a first wrapping part and a second wrapping part connected to each other, the first wrapping part wraps the second funnel part, the second wrapping part wraps the second cylindrical part, and the first wrapping part and the interior of the nylon thermal insulation sleeve form a first heat dissipation space.

[0008] In a specific embodiment of the present invention, the nylon insulation sleeve is provided with a distal discharge end and a proximal discharge end, the proximal discharge end is arranged as a hollow frustum structure, the proximal discharge end is sleeved on the outer periphery of the first wrapping part, and the first heat dissipation space is arranged between the distal discharge end and the unwrapped first wrapping part.

[0009] In a specific embodiment of the present invention, a convex ring is provided on the outer side of one end of the metal heating element away from the metal glue outlet nozzle, and one side of the convex ring abuts against the side of the multi-layer thermal insulation cotton away from the metal glue outlet nozzle.

[0010] In a specific embodiment of the present invention, the inner wall of the silicone member is provided with a plurality of protrusions evenly distributed in a ring shape, a heat dissipation gap is provided between two adjacent protrusions, and the protrusions are in contact with the outer side of the nylon heat insulation sleeve.

[0011] In a specific embodiment of the present invention, the silicone part is a funnel-shaped structure, and one end of the silicone part is provided with a gun head that wraps the metal glue nozzle. The gun head protrudes outward from the outer surface of the silicone part, and a limiting ring is provided inside the gun head, and the limiting ring abuts against the metal glue nozzle.

[0012] In a specific embodiment of the present invention, the outer side of one end of the hot melt glue gun body close to the metal glue nozzle is snap-connected with a fixing piece, a slot is provided on the outer side of one end of the hot melt glue gun body close to the metal glue nozzle, a buckle is provided on the inner side of the fixing piece, and the buckle can be fixed in the slot, an installation gap is provided between the fixing piece and the outer side of the hot melt glue gun body, and an outer protrusion is provided on the end of the silicone piece away from the metal glue nozzle, and the outer protrusion is snapped into the installation gap and fixed.

[0013] In a specific embodiment of the present invention, a plurality of evenly distributed guide blocks are provided on the inner side of the fixing member, and a plurality of guide grooves are provided on the outer side of one end of the hot melt glue gun body close to the metal glue nozzle, and each guide block is inserted into the corresponding guide groove.

[0014] One of the above technical solutions of the utility model has at least one of the following advantages or beneficial effects:

[0015] This multi-layer thermal insulation glue gun structure wraps the metal heating element with multiple layers of thermal insulation cotton to prevent the metal heating element from directly contacting the hot melt glue gun body, thereby reducing the temperature of the hot melt glue gun body shell. A nylon insulation sleeve is then placed on the periphery of the multi-layer thermal insulation cotton to more effectively insulate and fix the metal heating element. Finally, silicone parts are used to wrap the nylon insulation sleeve and the metal glue nozzle to completely avoid the risk of burns from accidental touch. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a cross-sectional view of a multi-layer thermal insulation glue gun in one embodiment of the present invention;

[0018] Figure 2 This is an exploded view of the structure of a multi-layer thermal insulation glue gun in one embodiment of the present invention;

[0019] Figure 3 This is a cross-sectional view of the structure of the nozzle of a multi-layer thermal insulation glue gun in one embodiment of the present invention;

[0020] Figure 4 This is a schematic structural diagram of a nylon heat-insulating sleeve in one embodiment of the present invention;

[0021] Figure 5 This is a schematic structural diagram of a metal heating element in one embodiment of the present invention;

[0022] Figure 6 This is a cross-sectional view of a silicone rubber member in one embodiment of the present invention;

[0023] Figure 7 It is a structural schematic diagram of a multi-layer heat-insulating glue gun housing and a fixing part in one embodiment of the present invention. DETAILED DESCRIPTION

[0024] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals 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 only used to explain the present invention, and should not be understood as limiting the present invention.

[0025] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They 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. Therefore, they cannot be understood as limitations on the present invention.

[0026] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly indicate the quantity of the technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection or an indirect connection through an intermediate medium, and it can be internal connection between two elements, indirect connection, or an interactive relationship between two elements.

[0029] The following disclosure provides many different embodiments or examples for implementing different solutions of the present invention.

[0030] Reference Figures 1 to 7 As shown, a multi-layer thermal insulation glue gun structure is provided, including a hot melt glue gun body 1, a metal heating element 2 is provided in the hot melt glue gun body 1, a metal glue nozzle 21 is provided on the metal heating element 2, and a multi-layer thermal insulation cotton 3 is provided on the periphery of the metal heating element 2. A nylon thermal insulation sleeve 4 is provided on the periphery of one end of the multi-layer thermal insulation cotton 3, and the nylon thermal insulation sleeve 4 is snap-fitted and connected to one end of the hot melt glue gun body 1. A silicone component 5 is provided on the periphery of the nylon thermal insulation sleeve 4, and the silicone component 5 also wraps the metal glue nozzle 21, and the silicone component 5 is fixedly connected to one end of the hot melt glue gun body 1.

[0031] In this embodiment, the heat generated by the metal heating element 2 diffuses to the surroundings. By wrapping multiple layers of thermal insulation cotton 3 around the outer periphery of the metal heating element 2, the metal heating element 2 can be prevented from directly contacting the gun shell of the hot melt glue gun body 1, thereby reducing the temperature of the gun shell. Wrapping the multiple layers of thermal insulation cotton 3 with nylon thermal insulation sleeve 4 can insulate and fix the position of the metal heating element 2. After being insulated by the multiple layers of thermal insulation cotton 3 and the nylon thermal insulation sleeve 4, the temperature can be effectively reduced by 40-50°C. Furthermore, a silicone member 5 is again installed on the outer periphery of the nylon thermal insulation sleeve 4. At the same time, the silicone member 5 also wraps the metal glue nozzle 21 of the metal heating element 2, without exposing any part of the metal heating element 2, thereby completely avoiding the risk of burns caused by accidental touch. After the multiple layers of thermal insulation are set, when the temperature is transferred to the outermost structure, it is no longer hot to the touch, thereby protecting the user.

[0032] In one embodiment of the present invention, an annular groove 41 is provided on the outer side of the nylon insulation sleeve 4, and an annular portion 11 is provided at one end of the hot melt glue gun body 1 close to the metal glue nozzle 21, which is adapted to the annular groove 41. The annular portion 11 is installed in the annular groove 41, and the annular portion 11 on the hot melt glue gun body 1 is inserted into the annular groove 41 on the nylon insulation sleeve 4, so that the nylon insulation sleeve 4 is fixedly connected to the hot melt glue gun body 1, thereby fixing the position of the nylon insulation sleeve 4.

[0033] In one embodiment of the present invention, the metal heating element 2 is provided with a second funnel portion 22 and a second cylindrical portion 23. The second funnel portion 22 is provided with a first end and a second end. The inner diameter of the first end is larger than the inner diameter of the second end. The first end is connected to the second cylindrical portion 23, and the second end is connected to the metal glue nozzle 21. The inner diameter of the metal glue nozzle 21 is equal to the inner diameter of the second end. The length of the second funnel portion 22 is smaller than the length of the second cylindrical portion 23, which is conducive to storing hot melt adhesive in the second cylindrical portion 23. When the hot melt adhesive in the second cylindrical portion 23 is pushed to flow toward the second funnel portion 22, the diameter gradually changes from large to small, thereby controlling the extrusion amount and avoiding waste caused by accidentally squeezing out too much.

[0034] Furthermore, the multi-layer thermal insulation cotton 3 is provided with a first wrapping portion 31 and a second wrapping portion 32 that are interconnected. The first wrapping portion 31 wraps the second funnel portion 22, and the second wrapping portion 32 wraps the second cylindrical portion 23. The first wrapping portion 31 and the interior of the nylon thermal insulation sleeve 4 form a first heat dissipation space 10. The first heat dissipation space 10 can cause the heat that passes through the multi-layer thermal insulation cotton 3 to lose part of the heat in the space and then be transferred to the nylon thermal insulation sleeve 4. Preferably, the multi-layer thermal insulation cotton 3 is porous, which is more conducive to heat dissipation. The inner side of the first wrapping portion 31 is provided with an adhesive surface, which is convenient for pasting and fixing with the second funnel portion 22. The inner side of the second wrapping portion 32 is also provided with an adhesive surface, which is convenient for pasting and fixing with the second cylindrical portion 23.

[0035] In one embodiment of the present invention, the nylon insulation sleeve 4 is provided with a distal discharge end 44 and a proximal discharge end 45. The proximal discharge end 45 is configured as a hollow frustum structure. The proximal discharge end 45 is sleeved on the outer periphery of the first wrapping portion 31. The first heat dissipation space 10 is provided between the distal discharge end 44 and the unwrapped first wrapping portion 31. The inner diameter of the proximal discharge end 45 is greater than the outer diameter of the first wrapping portion 31.

[0036] Furthermore, two symmetrical limit blocks are provided on the far discharge end 44 , and the two limit blocks are respectively arranged on the outside of the second wrapping portion 32 . The two limit blocks fix the position of the second wrapping portion 32 to prevent it from being deviated.

[0037] In one embodiment of the present invention, the inner wall of the silicone member 5 is provided with a plurality of protrusions 51 evenly distributed in a ring shape, and a heat dissipation gap 52 is provided between two adjacent protrusions 51. The protrusions 51 are in contact with the outer side of the nylon insulation sleeve 4, which not only reduces the area of ​​direct heat conduction between the nylon insulation sleeve 4 and the silicone member 5, but also increases the air insulation area between the two, which can effectively reduce the temperature by 15-20°C.

[0038] Furthermore, the silicone part 5 is a funnel-shaped structure, and one end of the silicone part 5 is provided with a gun head 53 that wraps the metal glue nozzle 21. The gun head 53 protrudes from the outer surface of the silicone part 5, and a limiting ring 531 is provided inside the gun head 53. The limiting ring 531 abuts against the metal glue nozzle 21. The limiting ring 531 is used to prevent the metal glue nozzle 21 from protruding from the silicone part 5, so that the entire metal glue nozzle 21 is directly wrapped without exposing the heated metal body, completely avoiding the risk of burns caused by accidental touch.

[0039] In one embodiment of the present invention, the outer side of one end of the hot melt glue gun body 1 close to the metal glue nozzle 21 is snap-fitted with the fixing part 6, and a slot 12 is provided on the outer side of the end of the hot melt glue gun body 1 close to the metal glue nozzle 21, and a buckle is provided on the inner side of the fixing part 6, which can be fixed in the slot 12, and a mounting gap 13 is provided between the fixing part 6 and the outer side of the hot melt glue gun body 1, and an outer protrusion 54 is provided on the end of the silicone member 5 away from the metal glue nozzle 21, and the outer protrusion 54 is snapped into the mounting gap 13 and fixed. The outer protrusion 54 of the silicone member 5 is firmly clamped in the mounting gap 13, which can prevent the silicone member 5 from falling off and reduce the temperature of the outer surface of the gun shell of the hot melt glue gun body 1.

[0040] Furthermore, a number of evenly distributed guide blocks 61 are provided on the inner side of the fixing part 6, and a number of guide grooves 14 are provided on the outer side of one end of the hot melt glue gun body 1 close to the metal glue nozzle 21. Each guide block 61 is inserted into the guide groove 14, and finally the buckle on the fixing part 6 is snapped into the slot 12 on the hot melt glue gun body 1 and fixed. The guide groove 14 and the guide block 61 are convenient for workers to install quickly.

[0041] In one embodiment of the present invention, a convex ring 24 is provided on the outer side of the end of the metal heating element 2 away from the metal glue nozzle 21, and one side of the convex ring 24 is in contact with the side of the multi-layer thermal insulation cotton 3 away from the metal glue nozzle 21. A convex ring 24 is provided on the outer side of the end of the second cylindrical portion 23 away from the second funnel portion 22, and the convex ring 24 is arranged in a circular ring around the outside of the second cylindrical portion 23, so that the second wrapping portion 32 is in contact with the side of the convex ring 24 to prevent the first wrapping portion 31 from being put on the second cylindrical portion 23. Since the diameter of part of the first wrapping portion 31 is small, if it is put on the second cylindrical portion 23, the multi-layer thermal insulation cotton 3 will be easily damaged due to its large diameter.

[0042] The main function of the present invention is to block or seal the heat generated by the metal heating element 2 as much as possible inside the hot melt glue gun body 1, so as to control the temperature of all parts of the glue gun outer surface that may be touched by the user to be below 55 degrees Celsius.

[0043] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A multi-layer thermal insulation glue gun structure, comprising a hot melt glue gun body (1), characterized in that: The hot melt glue gun body (1) is provided with a metal heating element (2), the metal heating element (2) is provided with a metal glue nozzle (21), the outer periphery of the metal heating element (2) is provided with multiple layers of heat-insulating cotton (3), the outer periphery of one end of the multiple layers of heat-insulating cotton (3) is provided with a nylon heat-insulating sleeve (4), the nylon heat-insulating sleeve (4) is snap-fitted and connected to one end of the hot melt glue gun body (1), the outer periphery of the nylon heat-insulating sleeve (4) is provided with a silicone member (5), the silicone member (5) also wraps the metal glue nozzle (21), and the silicone member (5) is fixedly connected to one end of the hot melt glue gun body (1).

2. The multi-layer thermal insulation glue gun structure according to claim 1, characterized in that: An annular groove (41) is provided on the outer side of the nylon heat-insulating sleeve (4), and an annular portion (11) adapted to the annular groove (41) is provided on one end of the hot-melt glue gun body (1) close to the metal glue outlet nozzle (21), and the annular portion (11) is installed in the annular groove (41).

3. The multi-layer thermal insulation glue gun structure according to claim 1, characterized in that: The metal heating element (2) is provided with a second funnel portion (22) and a second cylindrical portion (23), the second funnel portion (22) is provided with a first end and a second end, the inner diameter of the first end is larger than the inner diameter of the second end, the first end is connected to the second cylindrical portion (23), the second end is connected to the metal glue outlet nozzle (21), the inner diameter of the metal glue outlet nozzle (21) is equal to the inner diameter of the second end, and the length of the second funnel portion (22) is smaller than the length of the second cylindrical portion (23).

4. The multi-layer thermal insulation glue gun structure according to claim 3, characterized in that: The multi-layer heat-insulating cotton (3) is provided with a first wrapping portion (31) and a second wrapping portion (32) connected to each other, wherein the first wrapping portion (31) wraps the second funnel portion (22), and the second wrapping portion (32) wraps the second cylindrical portion (23), and the first wrapping portion (31) and the interior of the nylon heat-insulating sleeve (4) form a first heat dissipation space (10).

5. The multi-layer thermal insulation glue gun structure according to claim 4, characterized in that: The nylon heat-insulating sleeve (4) is provided with a distal discharge end (44) and a proximal discharge end (45), wherein the proximal discharge end (45) is configured as a hollow truncated cone structure, and the proximal discharge end (45) is sleeved on the outer periphery of the first wrapping portion (31), and the first heat dissipation space (10) is provided between the distal discharge end (44) and the unwrapped first wrapping portion (31).

6. The multi-layer thermal insulation glue gun structure according to claim 1, characterized in that: A convex ring (24) is provided on the outer side of one end of the metal heating element (2) away from the metal glue outlet nozzle (21), and one side of the convex ring (24) abuts against the side of the multi-layer heat insulation cotton (3) away from the metal glue outlet nozzle (21).

7. The multi-layer thermal insulation glue gun structure according to claim 1, characterized in that: The inner wall of the silicone member (5) is provided with a plurality of protrusions (51) evenly distributed in a ring shape, a heat dissipation gap (52) is provided between two adjacent protrusions (51), and the protrusions (51) are in contact with the outer side of the nylon heat insulation sleeve (4).

8. The multi-layer thermal insulation glue gun structure according to claim 7, characterized in that: The silicone member (5) is a funnel-shaped structure. One end of the silicone member (5) is provided with a gun head (53) that wraps the metal glue outlet nozzle (21). The gun head (53) protrudes from the outer surface of the silicone member (5). A limiting ring (531) is provided inside the gun head (53), and the limiting ring (531) abuts against the metal glue outlet nozzle (21).

9. The multi-layer thermal insulation glue gun structure according to claim 1, characterized in that: The outer side of one end of the hot melt glue gun body (1) close to the metal glue nozzle (21) is snap-fitted with the fixing member (6); a slot (12) is provided on the outer side of one end of the hot melt glue gun body (1) close to the metal glue nozzle (21); a buckle is provided on the inner side of the fixing member (6); the buckle can be fixedly arranged in the slot (12); a mounting gap (13) is provided between the fixing member (6) and the outer side of the hot melt glue gun body (1); an outer protrusion (54) is provided on the end of the silicone member (5) away from the metal glue nozzle (21); the outer protrusion (54) is snapped into the mounting gap (13) and fixed.

10. The multi-layer thermal insulation glue gun structure according to claim 9, characterized in that: A plurality of evenly distributed guide blocks (61) are provided on the inner side of the fixing member (6), and a plurality of guide grooves (14) are provided on the outer side of one end of the hot melt glue gun body (1) close to the metal glue nozzle (21), and each guide block (61) is inserted into the corresponding guide groove (14).

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