Hot melt adhesive coating device

Abstract

The utility model discloses a hot melt glue coating device which is characterized in that an adjustable glue gun structure is arranged in a moving device which is arranged in the conveying direction of materials of disposable hygienic products and corresponds to the glue gun, and a first material guide roller which can be adjusted in the first direction and a second material guide roller which can be adjusted in the second direction are arranged in the moving device. When the first material guide roller moves in the first direction, the distance of the first material guide roller relative to the second material guide roller in the first direction is adjusted, and the guide-in angle of the material on the first material guide roller is changed, so that the tension of the material is adjusted, and the sizing effect is improved; when the second material guide roller moves in the second direction, the material borne between the first material guide roller and the second material guide roller is adjusted, so that the material is in flush contact with the glue lip, and it is ensured that the hot melt glue is evenly coated on the material. By adjusting the first material guide roller and the second material guide roller in the mode, the quality of the disposable hygienic product can be effectively improved. The hot melt adhesive coating device has the characteristics of simple structure, lower cost, convenience in operation and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of disposable hygiene product manufacturing equipment, especially to the fields of diapers, pull-up pants, sanitary napkins, pantiliners, etc., and specifically relates to a hot melt adhesive coating device. Background Art

[0002] Generally, disposable hygiene products are formed by bonding and compounding multiple materials. In disposable hygiene product manufacturing equipment, a hot melt adhesive coating device is usually installed to coat an adhesive on each material and fix it to other materials. Generally, the hot melt adhesive coating device has two forms: a spraying method (i.e., spraying glue) that is non-contact with the material and a scraping method (i.e., scraping glue) that is in contact with the material.

[0003] Some researchers found that in the scraping-type coating device, since the material is in direct contact with the glue outlet part (or called glue lip) of the glue gun, when the manufacturing equipment stops, it is necessary to separate the glue lip from the material to prevent the glue from melting the material due to the high temperature of the glue gun (e.g., greater than 100°C) after accumulating on the material.

[0004] Therefore, usually the glue gun is designed in an adjustable (movable) form, that is, the glue gun is moved to separate or contact the glue lip from the material, so as to realize the separation or contact of the glue lip in the scraping form from the material. However, when the material is very wide (e.g., the material of adult diaper products), the face length of the glue gun needs to be set very long (e.g., greater than 800 mm). At this time, when adjusting (moving) the glue gun, since the glue gun is heavy and the structure is also relatively complex, the adjustment is very inconvenient. In addition, due to the long face length of the glue gun, if it is not installed correctly in the face length direction, part of the glue lip will be in contact with the material, while part of the glue lip will not be in contact with the material, resulting in a large amount of glue being applied to part of the material in the entire face length direction, while part of the material is not coated with glue, and phenomena such as uneven glue application and poor coating effect occur, greatly affecting the quality of disposable hygiene products.

[0005] Therefore, a solution to the problems of the existing technology needs to be proposed. Content of the Utility Model

[0006] The present utility model provides a hot melt adhesive coating device, which arranges the structure of an adjustable glue gun in a moving device corresponding to the glue gun along the conveying direction of the material of the disposable sanitary product. The moving device is provided with a first material guide roller adjustable along a first direction and a second material guide roller adjustable along a second direction, and the first direction and the second direction are perpendicular to each other. When the first material guide roller moves along the first direction, the distance of the first material guide roller relative to the second material guide roller along the first direction is adjusted, so as to change the feeding angle of the material on the first material guide roller, and further adjust the tension of the material, so as to further improve the glue application effect on the material. When the second material guide roller moves along the second direction, the material carried between the first material guide roller and the second material guide roller is adjusted, so that the material carried between the first material guide roller and the second material guide roller is in flush contact with the glue lip, so as to ensure that the hot melt glue is evenly coated on the material, and further improve the glue application effect. By adjusting the first material guide roller and the second material guide roller in the above manner, the quality of the prepared disposable sanitary product can be effectively improved. Moreover, the hot melt adhesive coating device provided by the present utility model has the characteristics of simple structure, low cost and convenient operation.

[0007] The present utility model provides a hot melt adhesive coating device, which is applied to the manufacturing equipment of disposable sanitary products. The hot melt adhesive coating device includes a glue gun and a moving device which are arranged corresponding to each other along the conveying direction of the material of the disposable sanitary product. The glue gun includes a glue lip, and the glue lip is arranged at the working end of the glue gun. The moving device includes a first material guide roller moving along a first direction and a second material guide roller moving along a second direction, and the first direction and the second direction are perpendicular to each other. Wherein, when the first material guide roller moves along the first direction, the distance of the first material guide roller relative to the second material guide roller along the first direction is adjusted to change the feeding angle of the material on the first material guide roller. When the second material guide roller moves along the second direction, the material carried between the first material guide roller and the second material guide roller is adjusted, so that the material carried between the first material guide roller and the second material guide roller is in flush contact with the glue lip.

[0008] In some embodiments of the present utility model, the moving device further includes a bracket, and the first material guide roller and the second material guide roller are arranged in parallel along a third direction on the bracket. Among them, the first direction, the second direction and the third direction are perpendicular to each other. A first guide groove extending along the first direction and a second guide groove extending along the second direction are arranged on the bracket. The first material guide roller is installed in the first guide groove, and the second material guide roller is installed in the second guide groove.

[0009] In some embodiments of the present utility model, the mobile device further includes a mounting bracket; at least one driving member is mounted on the mounting bracket, and the bracket is connected to the driving member; wherein, the first material guide roller and the second material guide roller move together with the bracket under the drive of the driving member, so that the material carried between the first material guide roller and the second material guide roller is separated from or in contact with the glue lip.

[0010] In some embodiments of the present utility model, when the length of the material carried between the first material guide roller and the second material guide roller in the third direction is greater than a preset length, the number of the driving members is two.

[0011] In some embodiments of the present utility model, when the manufacturing device is working, the driving member synchronously drives the first material guide roller and the second material guide roller, so that the material carried between the first material guide roller and the second material guide roller is in contact with the glue lip, and the glue lip coats hot melt glue on one surface of the material carried between the first material guide roller and the second material guide roller.

[0012] In some embodiments of the present utility model, when the manufacturing device stops, the driving member synchronously drives the first material guide roller and the second material guide roller, so that the material carried between the first material guide roller and the second material guide roller is separated from the glue lip.

[0013] In some embodiments of the present utility model, the mobile device further includes a shaft; the first material guide roller and the second material guide roller are respectively mounted on the bracket through the shaft, and the first material guide roller and the second material guide roller respectively rotate around the shaft.

[0014] In some embodiments of the present utility model, the first material guide roller and the second material guide roller are made of a lightweight material such as carbon fiber, aluminum alloy or magnesium alloy.

[0015] In some embodiments of the present utility model, the hot melt glue coating device further includes a first guide roller, the first guide roller is arranged in the conveying direction of the material of the disposable sanitary product and is located on the upstream side of the glue gun and the mobile device; the first guide roller is used to introduce the material of the disposable sanitary product from the upstream side between the glue gun and the mobile device; wherein, the material of the disposable sanitary product is introduced from the first guide roller to the first material guide roller along the conveying direction and flows through the second material guide roller.

[0016] In some embodiments of the present utility model, the hot melt adhesive coating device further includes a second guiding roller, which is arranged in the conveying direction of the material of the disposable sanitary product and is located on the downstream side of the glue gun and the moving device; the second guiding roller is used to guide the material coated with hot melt adhesive to the downstream side.

[0017] The present utility model provides a hot melt adhesive coating device, which sets the structure of an adjustable glue gun in a moving device arranged along the conveying direction of the material of the disposable sanitary product and corresponding to the glue gun. Among them, the moving device is provided with a first material guiding roller adjustable along a first direction and a second material guiding roller adjustable along a second direction, and the first direction and the second direction are perpendicular to each other. When the first material guiding roller moves along the first direction, the distance of the first material guiding roller relative to the second material guiding roller along the first direction is adjusted, so as to change the guiding angle of the material on the first material guiding roller, and further adjust the tension of the material, so as to further improve the glue application effect on the material; when the second material guiding roller moves along the second direction, the material carried between the first material guiding roller and the second material guiding roller is adjusted, so that the material carried between the first material guiding roller and the second material guiding roller is in flat contact with the glue lip, so as to ensure that the hot melt adhesive is evenly coated on the material, and further improve the glue application effect. By adjusting the first material guiding roller and the second material guiding roller in the above manner, the quality of the prepared disposable sanitary product can be effectively improved. In addition, the hot melt adhesive coating device provided by the present utility model has a simple structure, low cost, and is easy to operate, and also simplifies the structure of the glue gun in disguise. The hot melt adhesive coating device is particularly suitable for the scenario where the surface length of the material is relatively long. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the state of a hot melt adhesive coating device in an embodiment of the present utility model when the manufacturing equipment of the disposable sanitary product is working.

[0020] Figure 2 For Figure 1 the side view, showing the state of the glue gun and the moving device when the manufacturing equipment is working.

[0021] Figure 3 It is a schematic diagram of the state of a hot melt adhesive coating device in an embodiment of the present utility model when the manufacturing equipment of the disposable sanitary product is stopped. Detailed Embodiments

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application. In addition, it should be understood that the specific implementation manners described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise stated, the orientation words such as "upper", "lower", "left", and "right" generally refer to the upper, lower, left, and right in the actual use or working state of the device, specifically the drawing direction in the accompanying drawings.

[0023] An embodiment of the present utility model provides a hot melt adhesive coating device, which is applied to manufacturing equipment for disposable sanitary products. The hot melt adhesive coating device includes a glue gun and a moving device that are correspondingly arranged along the conveying direction of the material of the disposable sanitary product; the glue gun includes a glue lip, and the glue lip is arranged at the working end of the glue gun; the moving device includes a first material guide roller that moves along a first direction and a second material guide roller that moves along a second direction, and the first direction and the second direction are perpendicular to each other; wherein, when the first material guide roller moves along the first direction, the distance of the first material guide roller relative to the second material guide roller along the first direction is adjusted to change the feeding angle of the material on the first material guide roller; when the second material guide roller moves along the second direction, the material carried between the first material guide roller and the second material guide roller is adjusted so that the material carried between the first material guide roller and the second material guide roller is in flat contact with the glue lip.

[0024] Through the above structural design, especially by adjusting the first material guide roller and the second material guide roller respectively, the gluing effect can be effectively improved, thereby further ensuring the quality of disposable sanitary products.

[0025] In some embodiments of the present utility model, the moving device further includes a bracket, and the first material guide roller and the second material guide roller are arranged in parallel on the bracket along a third direction, wherein the first direction, the second direction, and the third direction are perpendicular to each other; a first guide groove extending along the first direction and a second guide groove extending along the second direction are arranged on the bracket; the first material guide roller is installed in the first guide groove, and the second material guide roller is installed in the second guide groove.

[0026] In some embodiments of the present utility model, the mobile device further includes a mounting bracket; at least one driving member is mounted on the mounting bracket, and the bracket is connected to the driving member; wherein, the first material guide roller and the second material guide roller move together with the bracket under the drive of the driving member, so that the material carried between the first material guide roller and the second material guide roller is separated from or in contact with the glue lip.

[0027] In some embodiments of the present utility model, when the length of the material carried between the first material guide roller and the second material guide roller in the third direction is greater than a preset length, the number of the driving members is two.

[0028] In some embodiments of the present utility model, when the manufacturing device is working, the driving member synchronously drives the first material guide roller and the second material guide roller, so that the material carried between the first material guide roller and the second material guide roller is in contact with the glue lip, and the glue lip coats the hot melt glue on one surface of the material carried between the first material guide roller and the second material guide roller.

[0029] In some embodiments of the present utility model, when the manufacturing device stops, the driving member synchronously drives the first material guide roller and the second material guide roller, so that the material carried between the first material guide roller and the second material guide roller is separated from the glue lip.

[0030] In some embodiments of the present utility model, the mobile device further includes a shaft; the first material guide roller and the second material guide roller are respectively mounted on the bracket through the shaft, and the first material guide roller and the second material guide roller respectively rotate around the shaft.

[0031] In some embodiments of the present utility model, the first material guide roller and the second material guide roller are made of a lightweight material such as carbon fiber, aluminum alloy or magnesium alloy.

[0032] In some embodiments of the present utility model, the hot melt glue applying device further includes a first guide roller, which is arranged in the conveying direction of the material of the disposable sanitary product and is located on the upstream side of the glue gun and the mobile device; the first guide roller is used to introduce the material of the disposable sanitary product from the upstream side between the glue gun and the mobile device; wherein, the material of the disposable sanitary product is introduced from the first guide roller to the first material guide roller along the conveying direction and flows through the second material guide roller.

[0033] In some embodiments of the present utility model, the hot melt adhesive coating device further includes a second guide roller, which is arranged in the conveying direction of the material of the disposable sanitary product and is located on the downstream side of the glue gun and the moving device; the second guide roller is used to guide the material coated with hot melt adhesive to the downstream side.

[0034] The following will provide a detailed description of a hot melt adhesive coating device provided in the embodiments of the present utility model. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments of the present utility model. And in the following embodiments, each embodiment has its own emphasis. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0035] As Figure 1 shown, a hot melt adhesive coating device in an embodiment of the present utility model is applied to a manufacturing device for disposable sanitary products. The hot melt adhesive coating device includes a guide roller (herein the first guide roller 1), a glue gun 2 and a moving device 3 arranged along the conveying direction L of the material of the disposable sanitary product. Among them, the glue gun 2 and the moving device 3 are correspondingly arranged. The first guide roller 1 guides the material W1 from the upstream side into the space between the glue gun 2 and the moving device 3. In this embodiment, the glue gun 2 adopts a scraping coating method in contact with the material W1, that is, when applying glue, the glue gun 2 is directly in contact with the material W1. A glue lip 21 is provided at the working end of the glue gun 2, and the hot melt adhesive W2 flows out from the glue lip 21, and the glue lip 21 coats the hot melt adhesive W2 on the material W1, facilitating the bonding and compounding of the material W1 coated with the hot melt adhesive W2 with another material (not shown in the figure) on the downstream side. When the surface length of the material W1 to be glued in the third direction c is relatively long, as Figure 2 shown, in order to facilitate the contact or separation of the glue lip 21 of the glue gun 2 from the material W1 to be glued, the present utility model is provided with a structure on the moving device 3 corresponding to the glue gun 2 to adjust the contact or separation of the glue lip 21 from the material W1 to be glued.

[0036] The following will further describe the specific structure of the moving device 3. The moving device 3 includes a mounting frame 31, at least one driving member 32, a bracket 33, a shaft 34, a first material guide roller 35 and a second material guide roller 36. Among them, the driving member 32, for example, a cylinder, can be installed on the mounting frame 31, and the driving member 32 is connected to the bracket 33. Under the driving action of the driving member 32, the first material guide roller 35 and the second material guide roller 36 move together with the bracket 33, so that the material W1 supported by the first material guide roller 35 and the second material guide roller 36 moves away from or contacts the glue lip 21 of the glue gun 2.

[0037] The mobile device 3 has a first direction a, a second direction b, and a third direction c that are perpendicular to each other. In this embodiment, the first direction a is the longitudinal direction, the second direction b is the transverse direction, and the third direction c is the axial direction. The first material guide roller 35 and the second material guide roller 36 are arranged in parallel on the bracket 33 along the third direction c. Specifically, the first material guide roller 35 and the second material guide roller 36 are mounted on the bracket 33 through the shaft 34, and the first material guide roller 35 and the second material guide roller 36 can rotate around the shaft 34.

[0038] As Figure 1 shown, the material W1 in the process direction L is introduced from the first guide roller 1 to the first material guide roller 35 and flows through the second material guide roller 36. The connecting line direction of the first material guide roller 35 and the second material guide roller 36 is the flow path of the material W1, and the first material guide roller 35 and the second material guide roller 36 support the material W1.

[0039] The hot melt adhesive coating device further includes a guide roller. In this embodiment, the guide roller is the second guide roller 4. The second guide roller 4 is arranged in the conveying direction L of the material W1 and is located on the downstream side of the glue gun 2 and the mobile device 3. The second guide roller 4 is used to guide the material W1 coated with the hot melt glue W2 to the downstream side.

[0040] Continue to refer to Figure 1As shown in the figure, a first guide groove 331 extending in the first direction and a second guide groove 332 extending in the second direction are provided on the bracket 33. The first material guide roller 35 is mounted on the first guide groove 331 through a shaft 34, and the second material guide roller 36 is also mounted on the second guide groove 332 through the shaft 34. In this way, when the first material guide roller 35 moves along the first direction a, the distance of the first material guide roller 35 relative to the second material guide roller 36 along the first direction a is adjusted, that is, the position of the second material guide roller 36 remains relatively unchanged, and the position of the first material guide roller 35 changes. In this case, the guiding angle of the material W1 on the first material guide roller 35 changes accordingly, and accordingly, the tension of the material W1 also changes. In other words, the tension of the material W1 is adjusted accordingly, so that the sizing effect on the material W1 can be further improved. When the second material guide roller 36 moves along the second direction b, the material W1 carried (i.e., supported) by the first material guide roller 35 and the second material guide roller 36 is adjusted, so that the material W1 carried between the first material guide roller 35 and the second material guide roller 36 is in flush contact with the glue lip 21. In this case, the material W1 is in complete contact with the glue lip 21, so as to ensure that the hot melt glue W2 can be evenly coated on the material W1, thereby improving the sizing effect. Therefore, in the hot melt glue coating device of the present utility model, the relative distance between the first material guide roller 35 and the second material guide roller 36 can be adjusted accordingly by adjusting the first material guide roller 35 and the second material guide roller 36 respectively, and the complete contact between the material W1 carried by the first material guide roller 35 and the second material guide roller 36 and the glue lip 21 can be ensured. In other words, the first material guide roller 35 and the second material guide roller 36 are used as individually adjustable structures, and by moving along the corresponding directions respectively, the quality of the prepared disposable sanitary products can be effectively improved.

[0041] In some embodiments of the present utility model, when the surface length (along the third direction c) of the material W1 to be sized is very long, for example, greater than a preset length (for example, the preset length is 800 mm), the number of driving members 32 can be set to two, so as to better maintain the parallelism of the first material guide roller 35 and the second material guide roller 36 along the axial direction c, thereby ensuring the sizing effect of the material W1 carried by the first material guide roller 35 and the second material guide roller 36.

[0042] Since the manufacturing equipment (not shown in the figure) of disposable sanitary products needs to be in a high-speed running state for a long time, therefore, in some embodiments of the present utility model, the first material guide roller 35 and the second material guide roller 36 can be prepared from non-metallic lightweight materials, specifically, can be prepared from one of the lightweight materials such as carbon fiber, aluminum alloy, and magnesium alloy, so as to replace the iron roller used in the related technology, thereby helping to meet the requirements of high-speed lightweight. Refer to Figure 1 and Figure 2As shown, when the manufacturing equipment of disposable sanitary products is working, the driving member 32 synchronously drives the first material guide roller 35 and the second material guide roller 36, so that the material W1 carried by the first material guide roller 35 and the second material guide roller 36 contacts the glue lip 21, and the glue lip 21 coats the hot melt glue W2 on one surface of the material W1. The specific glue coating size range and gram weight (i.e., glue coating amount) can be determined according to the predetermined design. The material W1 coated with the hot melt glue W2 is conveyed towards the downstream side under the guiding action of the second guiding roller 4 and is bonded and compounded with another material (not shown in the figure) on the downstream side.

[0043] As Figure 3 shown, when the manufacturing equipment of disposable sanitary products stops (i.e., shuts down), the driving member 32 will synchronously drive the first material guide roller 35 and the second material guide roller 36, so that the material W1 carried between the first material guide roller 35 and the second material guide roller 36 is separated from the glue lip 21, thereby avoiding the material W1 being melted by the high temperature of the glue gun 2 due to the accumulation of the hot melt glue W2 on the material W1 when the manufacturing equipment stops. When the manufacturing equipment of disposable sanitary products starts again, the driving member 32 will synchronously drive the first material guide roller 35 and the second material guide roller 36 again, so that the first material guide roller 35 and the second material guide roller 36 bring the material W1 into contact with the glue lip 21 again, thereby coating the material W1 with glue.

[0044] As described above, the hot melt glue coating device of the present utility model is provided with the structure of the adjustable glue gun 2 in the moving device 3 along the conveying direction L of the material W1 of the disposable sanitary product and corresponding to the glue gun 2, and respectively uses the first material guide roller 35 and the second material guide roller 36 in the moving device 3 to correspondingly adjust the relative distance between the first material guide roller 35 and the second material guide roller 36 and ensure the complete contact between the material W1 carried by the first material guide roller 35 and the second material guide roller 36 and the glue lip 21. The hot melt glue coating device of the present utility model has the characteristics of simple structure, low cost, convenient operation, etc., and the structure of the glue gun 2 is also simplified in disguise. Moreover, the hot melt glue coating device is particularly suitable for the scenario where the surface length of the material is relatively long.

[0045] The above has introduced in detail a hot melt glue coating device provided by the present utility model. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A hot melt adhesive coating device, used in the manufacturing equipment of disposable sanitary products, characterized in that: The hot melt glue coating device includes a glue gun and a moving device which are arranged correspondingly along the conveying direction of the material of the disposable sanitary product; the glue gun includes a glue lip, which is arranged at the working end of the glue gun; the moving device includes a first material guide roller which moves along a first direction and a second material guide roller which moves along a second direction, and the first direction and the second direction are perpendicular to each other; wherein, when the first material guide roller moves along the first direction, the distance of the first material guide roller relative to the second material guide roller along the first direction is adjusted to change the introduction angle of the material in the first material guide roller; when the second material guide roller moves along the second direction, the material carried between the first material guide roller and the second material guide roller is adjusted to make the material carried between the first material guide roller and the second material guide roller in flush contact with the glue lip.

2. The hot melt adhesive coating device according to claim 1, characterized in that: The moving device also includes a bracket, and the first material guide roller and the second material guide roller are arranged on the bracket in parallel along the third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other; a first guide groove extending along the first direction and a second guide groove extending along the second direction are arranged on the bracket; the first material guide roller is installed in the first guide groove, and the second material guide roller is installed in the second guide groove.

3. The hot melt adhesive coating device according to claim 2, characterized in that: The moving device also includes a mounting frame; at least one driving member is installed on the mounting frame, and the bracket is connected to the driving member; wherein the first material guide roller and the second material guide roller move together with the bracket under the drive of the driving member, so that the material carried between the first material guide roller and the second material guide roller is separated from or contacts the rubber lip.

4. The hot melt adhesive coating device according to claim 3, characterized in that: When the length of the material carried between the first material guide roller and the second material guide roller along the third direction is greater than a preset length, the number of the driving members is two.

5. The hot melt adhesive coating device according to claim 3, characterized in that: When the manufacturing equipment is working, the driving member synchronously drives the first material guide roller and the second material guide roller, so that the material carried between the first material guide roller and the second material guide roller contacts the glue lip, and the glue lip coats hot melt glue on a surface of the material carried between the first material guide roller and the second material guide roller.

6. The hot melt adhesive coating device according to claim 3, characterized in that: When the manufacturing equipment stops, the driving member synchronously drives the first material guide roller and the second material guide roller, so that the material carried between the first material guide roller and the second material guide roller is separated from the adhesive lip.

7. The hot melt adhesive coating device according to claim 2, characterized in that: The moving device further includes a shaft; the first material guide roller and the second material guide roller are respectively installed on the bracket through the shaft, and the first material guide roller and the second material guide roller respectively rotate around the shaft.

8. The hot melt adhesive coating device according to claim 1, characterized in that: The first material guide roller and the second material guide roller are made of a lightweight material selected from the group consisting of carbon fiber, aluminum alloy, and magnesium alloy.

9. The hot melt adhesive coating device according to claim 1, characterized in that: The hot melt glue coating device also includes a first guide roller, which is arranged in the conveying direction of the material of the disposable sanitary product and is located on the upstream side of the glue gun and the moving device; the first guide roller is used to introduce the material of the disposable sanitary product from the upstream side to between the glue gun and the moving device; wherein the material of the disposable sanitary product is introduced from the first guide roller to the first material guide roller along the conveying direction, and flows through the second material guide roller.

10. The hot melt adhesive coating device according to claim 9, characterized in that: The hot melt glue coating device also includes a second guide roller, which is arranged in the conveying direction of the material of the disposable sanitary product and is located on the downstream side of the glue gun and the moving device; the second guide roller is used to guide the material coated with hot melt glue to the downstream side.

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