Double-cylinder hot melt adhesive device

Abstract

The utility model provides a double-cylinder hot melt adhesive device which comprises a machine body, a first melt adhesive cylinder groove, a second melt adhesive cylinder groove, a heating module and an adhesive discharging mechanism, double-cylinder design is adopted, when the type of adhesive needs to be changed, rapid switching can be conducted for continuous production without discharging residual adhesive liquid, energy and adhesive particles are saved, the production switching speed can be increased, and the production efficiency is improved. And the production waiting time is reduced.

Description

Technical Field

[0001] This utility model relates to the field of hot melt adhesive machine technology, and in particular to a double-cylinder hot melt adhesive device. Background Technology

[0002] Traditional hot melt glue machines are all single-cylinder machines. A type of hot melt glue granules is added to the cylinder, heated and melted, and then the glue is sprayed out through the glue nozzle using air pressure to bond the items. However, because different items are being bonded, some items require a change of glue granule type. For example, in the process of bonding cardboard boxes, the type of glue granule needs to be changed depending on whether the cardboard box surface has a varnish. When changing, all the remaining hot melt glue needs to be squeezed out, the cavity needs to be cleaned with a cleaning cloth, and then another type of glue granule needs to be added and reheated. Production can only continue after the new glue granules have completely melted. This not only wastes hot melt glue granules, but also affects the quick changeover of production and affects production efficiency. Utility Model Content

[0003] This utility model addresses the technical problems in the background art by providing a dual-cylinder hot melt adhesive device. The dual-cylinder design allows for rapid switching and continued production without draining the remaining adhesive when the type of adhesive needs to be changed. This not only saves energy and adhesive particles but also increases production changeover speed and reduces production waiting time.

[0004] This application adopts the following scheme:

[0005] A dual-cylinder hot melt adhesive device includes a body, and a first melt cylinder and a second melt cylinder disposed within the body for respectively holding adhesive particles;

[0006] It also includes a heating module for heating and dissolving adhesive particles into liquid adhesive, and a discharging mechanism for discharging the liquid adhesive from the first melting tank or the second melting tank.

[0007] In the dual-cylinder hot melt adhesive device described above, the first melt cylinder and the second melt cylinder are spaced apart by a partition, and the two exchange heat through the partition.

[0008] In the dual-cylinder hot melt adhesive device described above, the partition has an angle with the horizontal plane.

[0009] As described above, the dual-cylinder hot melt adhesive device has a height adjustment mechanism on its body for raising the height of the first melt cylinder relative to the second melt cylinder.

[0010] As described above, in the dual-cylinder hot melt adhesive device, the heating module is located on one side of the first melt cylinder for direct heating. The first melt cylinder and the second melt cylinder are arranged adjacent to each other, and the first melt cylinder indirectly heats the second melt cylinder.

[0011] In the dual-cylinder hot melt adhesive device described above, the melting point of the adhesive in the first melting cylinder is higher than that in the second melting cylinder.

[0012] As described above, the dual-cylinder hot melt adhesive device has a first air inlet and a first adhesive outlet on the first melting cylinder, and a second air inlet and a second adhesive outlet on the second melting cylinder.

[0013] The glue discharge mechanism includes a compressed gas tank, which is connected to the first air inlet and the second air inlet respectively through an air inlet pipe;

[0014] A first hot melt adhesive delivery pipe is connected to the first adhesive outlet, and the outlet of the first hot melt adhesive delivery pipe is equipped with a first nozzle and a first control valve.

[0015] A second hot melt adhesive delivery pipe is connected to the second adhesive outlet, and the outlet of the second hot melt adhesive delivery pipe is equipped with a second nozzle and a second control valve.

[0016] In the dual-cylinder hot melt adhesive device described above, the first hot melt adhesive delivery pipe and / or the second hot melt adhesive delivery pipe are covered with a heating element for heating.

[0017] As described above, the dual-cylinder hot melt adhesive device has a first air pressure regulating mechanism on its body for adjusting the air pressure in the first melt adhesive cylinder.

[0018] As described above, the dual-cylinder hot melt adhesive device has a second air pressure regulating mechanism on its body for adjusting the air pressure in the second melt adhesive tank.

[0019] As described above, the dual-cylinder hot melt adhesive device has a first temperature detection mechanism on its body for detecting the temperature inside the first melt adhesive tank, and a first temperature adjustment mechanism electrically connected to the heating module for adjusting the temperature inside the first melt adhesive tank.

[0020] As described above, the dual-cylinder hot melt adhesive device has a second temperature detection mechanism on its body for detecting the temperature inside the second melt adhesive tank, and a second temperature adjustment mechanism electrically connected to the heating module for adjusting the temperature inside the second melt adhesive tank.

[0021] Implementing the embodiments of this utility model has the following beneficial effects:

[0022] This application provides a dual-cylinder hot melt adhesive device, which includes a machine body, a first melting cylinder, a second melting cylinder, a heating module, and a discharging mechanism. The dual-cylinder design allows for rapid switching and continued production without draining the remaining adhesive when the type of adhesive needs to be changed. This not only saves energy and adhesive particles but also increases the speed of production changeover and reduces production waiting time. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a dual-cylinder hot melt adhesive device according to this application. Detailed Implementation

[0025] 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.

[0026] like Figure 1 As shown, this application provides a dual-cylinder hot melt adhesive device, including a body 1, a first melting cylinder 2 and a second melting cylinder 3, a heating module 4, and an adhesive discharge mechanism 5; the first melting cylinder 2 and the second melting cylinder 3 are disposed in the body 1 for holding adhesive particles respectively; the heating module 4 is used to heat and dissolve the adhesive particles into adhesive liquid, and the adhesive discharge mechanism 5 is used to discharge the adhesive liquid from the first melting cylinder 2 or the second melting cylinder 3.

[0027] The dual-cylinder hot melt adhesive device of this application includes a body, a first melting cylinder, a second melting cylinder, a heating module, and a discharging mechanism. It adopts a dual-cylinder design, so when the type of adhesive needs to be changed, there is no need to drain the remaining adhesive liquid, and production can be quickly switched to continue. This not only saves energy and adhesive particles, but also improves the production changeover speed and reduces production waiting time.

[0028] In a further preferred embodiment, the first melt glue tank 2 and the second melt glue tank 3 are spaced apart by a partition 6, and the two exchange heat through the partition 6. With the above design, when it is necessary to change the type of glue, it is not necessary to drain the remaining glue liquid. The residual heat of the remaining material can also play the role of water bath heating for the hot melt glue in the other tank. The heating speed is fast, the heat loss is small, and there is no need to wait for a long time. The production can be quickly switched to continue production. This not only saves energy, but also improves the production switching speed and reduces the production waiting time.

[0029] As a further preferred embodiment, the partition 6 described in this application has an angle with the horizontal plane. This design can increase the heat exchange area between the two, resulting in faster heating and less heat loss.

[0030] Further preferably, the machine body 1 is provided with a height adjustment mechanism 7 for raising the height of the first melt tank 2 relative to the second melt tank 3. When the second melt tank 3 is to be used, the height of the first melt tank 2 relative to the second melt tank 3 can be raised by the height adjustment mechanism 7, so that the second melt tank 3 can be used for more thorough water bath heating, improving heating efficiency. The height adjustment mechanism 7 can be a lifting cylinder set at the bottom of the machine body 1 near the first melt tank 2, or it can be that the left foot of the machine body 1 is raised and the right foot is lowered, so that the glue in the first melt tank 2 tends to the second melt tank 3, increasing the heat exchange area between the two, resulting in faster heating speed and less heat loss.

[0031] Furthermore, in this embodiment, the heating module 4 is located on one side of the first melting tank 2 for direct heating. The first melting tank 2 and the second melting tank 3 are arranged adjacent to each other, and the second melting tank 3 is indirectly heated through the first melting tank 2. In a specific embodiment of this application, the heating module is located at the bottom of the first melting tank 2. Preferably, the heating module is a heating tube, which can directly heat the first melting tank 2. As a preferred embodiment, the melting point of the adhesive in the first melting tank 2 is higher than that in the second melting tank 3. When the type of adhesive needs to be changed, it is not necessary to drain the remaining adhesive. The residual heat of the remaining material in the first melting tank 2 can also play the role of water bath heating for the hot melt adhesive in the second melting tank 3. The heating speed is fast, the heat loss is small, and there is no need to wait for a long time, so that production can be quickly switched to continue.

[0032] Specifically, the first melt glue tank 2 is provided with a first air inlet 21 and a first glue outlet 22, and the second melt glue tank 3 is provided with a second air inlet 31 and a second glue outlet 32. In a specific embodiment of this application, the glue discharge mechanism 5 includes a compressed gas tank 51, which is connected to the first air inlet 21 and the second air inlet 31 respectively through an air inlet pipe 50. A first hot melt glue delivery pipe 52 is connected to the first glue outlet 22, and the liquid outlet of the first hot melt glue delivery pipe 52 is provided with a first nozzle 53 and a first control valve 54. A second hot melt glue delivery pipe 55 is connected to the second glue outlet 32, and the liquid outlet of the second hot melt glue delivery pipe 55 is provided with a second nozzle 56 and a second control valve 57. In a specific embodiment of this application, a three-way valve is provided between the compressed gas tank 51 and the air inlet pipe 50 to control the discharge of glue from the first melt glue tank 2 or the second melt glue tank 3 respectively, and the glue is sprayed out through the glue nozzle by air pressure for the adhesion of the item.

[0033] Furthermore, the outer side of the first hot melt adhesive delivery pipe 52 and / or the second hot melt adhesive delivery pipe 55 is covered with a heating element for heating. By heating the outer side of the hot melt adhesive delivery pipe, the hot melt adhesive can be prevented from curing.

[0034] Furthermore, the machine body 1 is provided with a first air pressure regulating mechanism 23 for regulating the air pressure in the first melt glue tank 2, a second air pressure regulating mechanism 33 for regulating the air pressure in the second melt glue tank 3, a first temperature detection mechanism 24 for detecting the temperature in the first melt glue tank 2, and a first temperature regulating mechanism 25 electrically connected to the heating module 4 for regulating the temperature in the first melt glue tank 2. The machine body 1 is also provided with a second temperature detection mechanism 34 for detecting the temperature in the second melt glue tank 3, and a second temperature regulating mechanism 35 electrically connected to the heating module 4 for regulating the temperature in the second melt glue tank 3, which facilitates separate control of spraying and heating.

[0035] Traditional single-cylinder hot melt glue machines require different glue types depending on the materials being glued, such as cardboard boxes. During the gluing process, the type of glue needs to be changed based on whether the cardboard surface has a varnish. This requires squeezing out all remaining hot melt glue, cleaning the chamber with a cloth, adding the new glue type, and reheating. Production can only continue after the new glue has completely melted. This not only wastes hot melt glue but also hinders quick changeovers and reduces production efficiency. This application proposes a nested dual-cylinder design. When changing the glue type, there's no need to drain the remaining glue. The residual heat of the remaining material can also provide a water bath heating effect for the hot melt glue in the other cylinder. This results in rapid heating with minimal heat loss, eliminating long waiting times and allowing for quick changeovers to continue production. This not only saves energy and glue but also improves changeover speed and reduces production waiting time. When using the second melting tank 3, the left foot is raised and the right foot is lowered, allowing for more thorough water bath heating and improved heating efficiency.

[0036] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A dual cylinder hot melt adhesive apparatus characterized by: The machine body (1) and the first and second glue melting cylinder grooves (2) and (3) for respectively containing glue particles are arranged in the machine body (1); The heating module (4) for heating and dissolving the glue particles into glue liquid and the glue discharging mechanism (5) for discharging the glue liquid from the first or second glue melting cylinder groove (2) or (3) are further included.

2. The dual cylinder hot melt adhesive device of claim 1, wherein: The first and second glue melting cylinder grooves (2) and (3) are arranged with a spacing groove (6) therebetween and are in heat exchange through the spacing groove (6).

3. The dual cylinder hot melt adhesive device of claim 2, wherein: The spacing groove (6) has an inclination angle with the horizontal plane.

4. The dual-cylinder hot melt adhesive apparatus of any of claims 1-3, wherein: The machine body (1) is provided with the height adjusting mechanism (7) for driving the first glue melting cylinder groove (2) to be lifted relative to the second glue melting cylinder groove (3).

5. The dual-cylinder hot melt adhesive apparatus of any of claims 1-3, wherein: The heating module (4) is arranged on one side of the first glue melting cylinder groove (2) for directly heating the first glue melting cylinder groove (2), and the first and second glue melting cylinder grooves (2) and (3) are arranged adjacently, and the second glue melting cylinder groove (3) is indirectly heated through the first glue melting cylinder groove (2).

6. The dual-cylinder hot melt adhesive apparatus of any of claims 1-3, wherein: The melting point of the glue liquid in the first glue melting cylinder groove (2) is higher than that in the second glue melting cylinder groove (3).

7. The dual cylinder hot melt adhesive device of claim 1, wherein: The first and second glue melting cylinder grooves (2) and (3) are arranged with the first and second air inlet holes (21) and (31) and the first and second glue outlet openings (22) and (32) respectively. The glue discharging mechanism (5) includes the compressed gas tank (51) which is in communication with the first and second air inlet holes (21) and (31) through the air inlet pipeline (50) respectively. The first hot melt glue conveying pipe (52) is connected to the first glue outlet opening (22), and the liquid outlet of the first hot melt glue conveying pipe (52) is provided with the first spray head (53) and the first control valve (54). The second hot melt glue conveying pipe (55) is connected to the second glue outlet opening (32), and the liquid outlet of the second hot melt glue conveying pipe (55) is provided with the second spray head (56) and the second control valve (57).

8. The dual cylinder hot melt adhesive device of claim 7, wherein: The first and / or second hot melt glue conveying pipes (52) and (55) are coated with the heating member outside for heating.

9. The dual cylinder hot melt adhesive device of claim 7, wherein: The machine body (1) is provided with the first air pressure adjusting mechanism (23) for adjusting the air pressure in the first glue melting cylinder groove (2); and / or The machine body (1) is provided with the second air pressure adjusting mechanism (33) for adjusting the air pressure in the second glue melting cylinder groove (3).

10. The dual cylinder hot melt adhesive device of claim 1, wherein: The machine body (1) is provided with the first temperature detecting mechanism (24) for detecting the temperature in the first glue melting cylinder groove (2) and the first temperature adjusting mechanism (25) which is electrically connected to the heating module (4) for adjusting the temperature in the first glue melting cylinder groove (2); and / or The machine body (1) is provided with the second temperature detecting mechanism (34) for detecting the temperature in the second glue melting cylinder groove (3) and the second temperature adjusting mechanism (35) which is electrically connected to the heating module (4) for adjusting the temperature in the second glue melting cylinder groove (3).

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