Hot melt glue pipe and glue machine using same

Abstract

The utility model relates to a hot melt glue pipe and a glue machine using the same. An existing hot melt adhesive pipe is prone to being damaged due to excessive bending or stress deformation. The flexible pipe comprises a built-in flexible pipe body and a protection pipe arranged outside the flexible pipe body in a sleeved mode, the protection pipe body comprises a metal wire in a cylindrical spiral line shape and a plastic sleeve arranged outside the metal wire in a sleeved mode, and the plastic sleeve shrinks after being heated and tightly wraps the metal wire so as to limit deformation of the flexible pipe body. The hose is sleeved with the protection pipe, the metal wire is arranged in the protection pipe to improve the deformation resistance, the plastic sleeve is heated and shrunk to drive the metal wire to be attached to the hose, the hose is protected, the situation that the hose is compressed and blocked due to external force is prevented, and the effect of limiting deformation of the hose is achieved; the hose is prevented from being excessively bent and deformed, the service life is prolonged, and the use experience is improved.

Description

Technical Field

[0001] The utility model relates to the field of furniture processing equipment, in particular to a hot-melt adhesive hose and a glue machine using the hot-melt adhesive hose. Background Art

[0002] The existing glue machine provides glue for the adhesion of various components during mattress production. The glue machine includes a glue box, a glue gun, and a hot melt hose connected between the glue box and the glue gun. The hot melted and softened glue in the glue box is transported to the glue gun through the hot melt hose so that the glue gun can spray glue to the designated area. The hot melt hose is a multi-layer hose. The hose includes a corrosion-resistant inner layer, a stainless steel pressure-resistant mesh layer, a heating layer, a temperature-resistant layer, a heat-resistant layer, and an outer packaging layer, which are sequentially arranged from the inside to the outside to ensure that the glue in the hot melt hose can be transported at a preset temperature. Since the hot melt hose is always in a high temperature state, it becomes relatively soft. The hot melt hose is prone to blockage and rupture due to excessive bending, resulting in a shortened service life of the hot melt hose, affecting the user experience. In addition, the glue remaining in the hot melt hose will solidify to form a high-hardness block. When the hot melt hose is bent, it is easy to be damaged due to friction and puncture with the block, affecting the service life. Utility Model Content

[0003] In order to address the deficiencies in the prior art, the utility model provides a hot-melt adhesive hose and a glue machine using the same. A protective tube is arranged outside the hose. A metal wire is arranged inside the protective tube to improve the anti-deformation performance. The utility model can protect the hose and prevent the hose from being compressed and blocked due to external force, and can also limit the deformation of the hose and prevent the hose from being excessively bent and deformed. The utility model can also effectively resist friction and puncture from blocky objects, thereby extending the service life and improving the user experience.

[0004] The utility model is realized in the following manner: a hot melt hose, including a built-in hose and a protective tube sleeved outside the hose, the protective tube including a metal wire in the shape of a cylindrical spiral and a plastic sleeve sleeved outside the metal wire, the plastic sleeve shrinks when heated and tightly wraps the metal wire to limit the deformation of the hose. The protective tube is arranged outside the hose, and the metal wire is arranged inside the protective tube to improve the anti-deformation performance. The plastic sleeve shrinks by heating to drive the metal wire to adhere to the hose, which not only protects the hose and prevents the hose from being compressed and blocked due to external force, but also limits the deformation of the hose and prevents the hose from being excessively bent and deformed. It can also effectively resist the friction and puncture of blocks, prevent the hose from being damaged, extend the service life, and improve the use experience.

[0005] Preferably, the spiral diameter of the metal wire is smaller than the inner wall diameter of the plastic sleeve. The metal wire is inserted into the plastic sleeve, which not only facilitates the insertion of the metal wire into the plastic sleeve, but also enables the heat-shrinkable plastic sleeve to wrap and limit the metal wire, thereby ensuring the fixed relative position between the two.

[0006] Preferably, the metal wire is arranged in the middle section of the plastic sleeve. The two end portions of the plastic sleeve are heated and shrunk and tightly fitted on the two end portions of the hose, so that the end portions of the plastic sleeve are closely attached to the end portions of the hose and form ends connected to the outside. The length of the plastic sleeve is greater than the length of the metal wire. The metal wire is arranged in the middle section of the plastic sleeve, so that the two end portions of the plastic sleeve are not provided with metal wires and are closely attached to the end portions of the hose, which not only ensures that the middle section of the hot melt adhesive tube plays a good protective role for the hose, but also ensures that the two end portions of the hot melt adhesive tube form ends with a flat outer wall, which is convenient for sealing connection with the interfaces on the glue machine or glue gun through connectors, and ensures the sealed transportation of the glue.

[0007] Preferably, the spiral diameter of the metal wire is greater than the outer wall diameter of the hose. The metal wire is sleeved on the hose and a movable gap for the hose to bend is reserved between the two. The spiral diameter of the metal wire is greater than the outer wall diameter of the hose, and the metal wire plays a role of radial limitation on the heat-shrinkable plastic sleeve, which not only ensures that the hose can be smoothly inserted into the protective tube, but also reserves a movable space for the hose to bend, so that the hose will not be blocked or damaged when bending.

[0008] Preferably, a spiral gap is provided between adjacent turns of the metal wire. The plastic sleeve is compressed and shrunk and fits on the surface of the hose after being embedded in the spiral gap to limit the offset between the hose and the protective tube. The plastic sleeve will shrink due to heating. Some areas will have a small deformation corresponding to the metal wire, and some areas will have a large deformation corresponding to the spiral gap between adjacent turns of the metal wire. It can not only control the differential shrinkage amplitude of different sections of the plastic sleeve to ensure the fixed relative position with the metal wire, but also use the section with a large deformation of the plastic sleeve to pass through the spiral gap and fit on the surface of the hose to ensure the fixed relative position between the protective tube and the hose.

[0009] Preferably, the hose includes a corrosion-resistant inner layer, a stainless steel pressure-resistant mesh layer, a heating layer, a temperature-resistant layer, a heat-resistant layer, and an outer packaging layer sleeved from the inside to the outside in sequence. The corrosion-resistant inner layer is used to isolate the glue and prevent the glue from leaking due to corrosion of the hose; the stainless steel pressure-resistant mesh layer can improve the pressure resistance of the hose and prevent the hose from being damaged due to excessive glue pressure; the heating layer can supplement the heating of the glue in the hose and prevent the glue from being blocked due to condensation; the temperature-resistant layer is used to isolate the heat generated by the heating layer from being transferred outward and ensure that the heat can be retained in the hose; the heat-resistant layer plays a role in preventing heat leakage and preventing the surface temperature of the hose from being too high to scald the user, and the outer packaging layer plays a role of decoration and protection for the inner layers.

[0010] Preferably, the hose includes a temperature sensing layer disposed between the stainless steel pressure resistant mesh layer and the heating layer. The temperature sensing layer is used to sense the temperature inside the hose, so as to ensure that the glue is maintained within a preset temperature range, ensuring that the glue has good fluidity and is convenient for transportation.

[0011] Preferably, the hose includes a heat insulation layer disposed between the temperature resistant layer and the heat resistant layer. The heat insulation layer plays a role in blocking heat transfer, ensuring the heat utilization efficiency through multi-stage heat preservation, and ensuring safe use to prevent scalding.

[0012] A glue machine using the hot melt adhesive tube, the glue machine includes a glue tank with a storage cavity and a heating device inside, and a glue gun with a nozzle. The hot melt adhesive tube is bridged between the glue tank and the glue gun. The heating device receives the raw material from the storage cavity, heats and melts it, and then transports it to the glue gun through the hot melt adhesive tube. The heating device in the glue tank receives the solid raw material in the storage cavity, heats it to form a liquid glue that is transported to the glue gun through the hot melt adhesive tube, which not only ensures that the glue has good fluidity and is convenient for transportation, but also ensures that the glue can be evenly applied to the preset area, improving the adhesion effect.

[0013] Preferably, both the glue tank and the glue gun are provided with interfaces. The hot melt adhesive tube is connected to the connecting piece through the ends at both ends, and then is hermetically inserted into the corresponding interfaces. The ends at both ends of the hot melt adhesive tube can be used for the installation of the connecting piece, and then are respectively inserted and fixed to the interfaces provided on the glue tank and the glue gun, ensuring a sealed connection between the glue tank and the glue gun and preventing glue leakage.

[0014] The beneficial effects of the present utility model: A protection tube is sleeved outside the hose. The anti-deformation performance is improved by setting metal wires inside the protection tube. The plastic sleeve shrinks by heating to drive the metal wires to adhere to the hose, which not only protects the hose from being compressed and blocked due to external forces, but also restricts the deformation of the hose to prevent the hose from being excessively bent and deformed, prolonging the service life and improving the use experience. Description of the Drawings

[0015] Figure 1 It is a cross-sectional structure schematic diagram of the hot melt adhesive tube described in Embodiment 1;

[0016] Figure 2 It is a cross-sectional structure schematic diagram of the protection tube described in Embodiment 1;

[0017] Figure 3 It is a cross-sectional structure schematic diagram of the hose described in Embodiment 1;

[0018] Figure 4 It is a cross-sectional assembly structure schematic diagram of the plastic sleeve before heating and shrinking described in Embodiment 1;

[0019] Figure 5 Schematic cross-sectional view of the assembly structure during the heat shrinkage of the plastic sleeve described in the first embodiment;

[0020] Figure 6 Schematic diagram of the structure of the glue machine described in the second embodiment;

[0021] In the figure: 1, hose; 2, protective tube; 3, metal wire; 4, plastic sleeve; 5, end; 6, corrosion-resistant inner layer; 7, stainless steel pressure-resistant mesh layer; 8, temperature-sensing layer; 9, heating layer; 10, temperature-resistant layer; 11, heat-insulating layer; 12, heat-resistant layer; 13, outer packaging layer; 14, glue tank; 15, glue gun; 16, hot melt adhesive tube. Specific embodiments

[0022] The following further describes the substantial features of the present invention in conjunction with the accompanying drawings of the specification and specific embodiments.

[0023] Embodiment 1:

[0024] This embodiment provides a hot melt adhesive tube.

[0025] As Figure 1 shown, a hot melt adhesive tube includes an internal hose 1 and a protective tube 2 sleeved outside the hose 1. The protective tube 2 includes a metal wire 3 in a cylindrical spiral shape and a plastic sleeve 4 sleeved outside the metal wire 3. The plastic sleeve 4 shrinks upon heating and tightly wraps the metal wire 3 to limit the deformation of the hose 1. By sleeving the protective tube 2 outside the hose 1 and arranging the metal wire 3 inside the protective tube 2 to enhance the anti-deformation performance, the plastic sleeve 4 drives the metal wire 3 to adhere to the hose 1 through heat shrinkage, which not only protects the hose 1 from being compressed and blocked due to external forces but also restricts the deformation of the hose 1, preventing the hose 1 from being excessively bent and deformed, extending the service life, and improving the user experience.

[0026] In this embodiment, the spiral diameter of the metal wire 3 is smaller than the inner wall diameter of the plastic sleeve 4, the metal wire 3 is inserted into the plastic sleeve 4, the spiral diameter of the metal wire 3 is larger than the outer wall diameter of the hose 1, and the metal wire 3 is sleeved on the hose 1 with a clearance reserved for the bending of the hose 1 between them. By setting reasonable diameter parameters, it is convenient for the insertion and sleeving of each component, improving the assembly convenience. In a preferred solution, the outer diameter of the hose 1 is 38 mm, the circumferential diameter of the metal wire 3 is 40 mm, and the wire diameter of the metal wire 3 is 2 mm, which is not only convenient for assembly but also has a good restraint on the hose. In addition, the outer diameter of the hose 1 and the circumferential diameter and wire diameter of the metal wire can all be adjusted, and all should be regarded as specific embodiments of the present invention.

[0027] During installation, first, cut a suitable length of wire 3, plastic sleeve 4, and hose 1. The length of the plastic sleeve 4 is the same as that of the hose 1, and the length of the middle section of the wire 3 is the same as that of the plastic sleeve 4. Then, insert the wire 3 into the plastic sleeve 4, and insert the hose 1 into the plastic sleeve 4 with the wire 3, so that the wire 3 is located in the middle section of the plastic sleeve 4, and both ends of the hose 1 are aligned with both ends of the plastic sleeve 4 and the middle part is inserted on the wire 3 (as Figure 4 shown); finally, heat-shrink the plastic sleeve 4 so that the plastic sleeve 4 is tightly fastened on the wire 3 (as Figure 5 shown).

[0028] After assembly, both ends of the plastic sleeve 4 are closely attached to both ends of the hose 1 to form ends 5 connected to the outside at both ends of the hot melt adhesive tube 16 (as Figure 2 shown), ensuring that the outer wall of the end 5 remains flat and effectively improving the connection sealing performance; the middle section of the plastic sleeve 4 is tightly fastened on the wire 3, and a local area of the middle section of the plastic sleeve 4 passes through the shrinkage through the spiral gap and abuts against the outer wall of the hose 1, which not only ensures the tight fit between the plastic sleeve 4 and the wire 3, ensures the relative position between the two is fixed, ensures that the wire 3 supports the middle section of the plastic sleeve 4, prevents the hose 1 from being compressed and blocked due to external force extrusion, but also limits the bending amplitude of the hose 1, preventing the hose 1 from being damaged and broken due to excessive bending; there is a clearance between the wire 3 and the outer wall of the hose 1, and the clearance is used to provide a bending space for the hose 1, so as to ensure that the hose 1 can be bent moderately while ensuring safety, thereby improving the use convenience.

[0029] In this embodiment, the wire 3 is arranged in the middle section of the plastic sleeve 4, and both ends of the plastic sleeve 4 are heat-shrunk and tightly fastened on both ends of the hose 1, so that the end of the plastic sleeve 4 is closely attached to the end of the hose 1 and forms an end 5 connected to the outside. The end 5 is cylindrical, with a flat port and outer wall, which is convenient for being fixedly connected with a connector, and then is hermetically connected with a corresponding interface through the connector to prevent glue leakage.

[0030] In this embodiment, there is a spiral gap between adjacent turns of the wire 3, and the plastic sleeve 4 is compressed and shrunk and fits on the surface of the hose 1 after being embedded in the spiral gap to limit the offset between the hose 1 and the protection tube 2. A local area of the plastic sleeve 4 is embedded in the spiral gap through shrinkage, which can not only fit on the outer wall of the hose 1, thereby preventing the hose 1 from shifting and deflecting relative to the protection tube 2, but also play a limiting role on the wire 3, preventing the wire 3 from shifting and deflecting relative to the plastic sleeve 4.

[0031] In this embodiment, the hose 1 is a multi-layer composite structure (as Figure 3As shown in the figure, it includes a corrosion-resistant inner layer 6, a stainless steel pressure-resistant mesh layer 7, a temperature-sensing layer 8, a heating layer 9, a temperature-resistant layer 10, a heat-insulating layer 11, a heat-resistant layer 12, and an outer packaging layer 13 that are sleeved in sequence from the inside out. The temperature-sensing layer 8 senses the temperature of the glue by setting temperature-sensing elements, and thus provides a basis for starting and stopping the heating layer 9. The heating layer 9 generates heat through conduction to heat-compensate the liquid glue conveyed in the hose 1, preventing the glue from solidifying due to excessive heat dissipation, ensuring that the glue in the hose 1 can remain liquid for a long time, and ensuring the reliability of glue conveyance.

[0032] Embodiment 2:

[0033] Compared with Embodiment 1, this embodiment provides a glue machine.

[0034] As Figure 6 shown, the glue machine includes a glue tank 14 with a storage cavity and a heating device, and a glue gun 15 with a nozzle. The hot melt glue pipe 16 is bridged between the glue tank 14 and the glue gun 15. The heating device receives the raw materials from the storage cavity, heats and melts them, and then conveys them to the glue gun 15 through the hot melt glue pipe 16. The heating device in the glue tank 14 receives the solid raw materials in the storage cavity, heats them to form liquid glue, and conveys it to the glue gun 15 through the hot melt glue pipe 16, which not only ensures that the glue has good fluidity and is convenient for conveyance, but also ensures that the glue can be evenly applied to the preset area, improving the adhesion effect.

[0035] In this embodiment, a control component is provided in the glue tank 14. The control component is connected to the temperature-sensing layer 8 and the heating layer 9. During operation, the control component senses the temperature of the glue in the hose 1 through the temperature-sensing layer 8 and heats and compensates the glue in the hose 1 through the heating layer 9, ensuring that the glue in the hose 1 is maintained within a preset temperature range, which not only ensures that the glue will not consume excessive electrical energy due to overheating, but also ensures that the glue is always in a liquid state, facilitating extrusion and conveyance.

[0036] In this embodiment, interfaces are provided on both the glue tank 14 and the glue gun 15. The hot melt glue pipe 16 is hermetically inserted into the corresponding interfaces through connectors provided on the end 5. The end 5 is inserted into the corresponding interface and hermetically fixed, ensuring that the glue can be hermetically conveyed and preventing leakage.

[0037] The other structures and effects of the hot melt glue pipe in this embodiment are the same as those in Embodiment 1 and will not be elaborated here.

Claims

1. A hot melt adhesive tube, comprising an inner hose (1) and a protective tube (2) sleeved outside the hose (1), characterized in that, The protection tube (2) includes a wire (3) in a cylindrical spiral shape and a plastic sleeve (4) sleeved outside the wire (3). The plastic sleeve (4) shrinks upon heating and tightly wraps the wire (3) to limit the deformation of the hose (1).

2. The hot melt adhesive tube according to claim 1, wherein The spiral diameter of the wire (3) is smaller than the inner wall diameter of the plastic sleeve (4), and the wire (3) is inserted into the plastic sleeve (4).

3. A hot melt adhesive tube according to claim 2, characterized in that, The wire (3) is arranged in the middle section of the plastic sleeve (4). The two end portions of the plastic sleeve (4) are heated and shrunk and tightly fastened on the two end portions of the hose (1), so that the end portion of the plastic sleeve (4) is in close contact with the end portion of the hose (1) to form a head (5) connected to the outside.

4. A hot melt adhesive tube according to claim 1, characterized in that, The spiral diameter of the wire (3) is larger than the outer wall diameter of the hose (1). The wire (3) is sleeved on the hose (1) with an activity gap reserved therebetween for the hose (1) to bend.

5. A hot melt adhesive tube according to claim 1, characterized in that, There is a spiral gap between adjacent turns of the wire (3). The plastic sleeve (4) is compressed and shrunk and fits on the surface of the hose (1) after being embedded in the spiral gap to limit the offset between the hose (1) and the protection tube (2).

6. A hot melt adhesive tube according to any one of claims 1-5, characterized in that, The hose (1) includes a corrosion-resistant inner layer (6), a stainless steel pressure-resistant mesh layer (7), a heating layer (9), a temperature-resistant layer (10), a heat-resistant layer (12), and an outer packaging layer (13) sleeved from the inside out in sequence.

7. A hot melt adhesive tube according to claim 6, characterized in that, The hose (1) includes a temperature-sensing layer (8) arranged between the stainless steel pressure-resistant mesh layer (7) and the heating layer (9).

8. A hot melt adhesive tube according to claim 6, characterized in that, The hose (1) includes a heat-insulating layer (11) arranged between the temperature-resistant layer (10) and the heat-resistant layer (12).

9. A glue machine using the hot melt adhesive tube according to any one of claims 1-8, characterized in that, The glue machine includes a glue tank (14) with a material storage cavity and a heating device inside, and a glue gun (15) with a nozzle. The hot melt adhesive tube (16) is bridged between the glue tank (14) and the glue gun (15). The heating device receives the raw material from the material storage cavity, heats and melts it, and then conveys it to the glue gun (15) through the hot melt adhesive tube (16).

10. A glue machine according to claim 9, characterized in that, Both the glue tank (14) and the glue gun (15) are provided with interfaces, and the hot melt adhesive tube is hermetically inserted into the corresponding interfaces through the heads (5) arranged at both ends.

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