Novel hot melt adhesive pipe for hot melt adhesive machine

Abstract

The utility model relates to the technical field of hot melt adhesive pipes, in particular to a novel hot melt adhesive pipe for a hot melt adhesive machine, which comprises a hot melt adhesive pipe body, two ends of the hot melt adhesive pipe body are provided with connecting ends, the connecting ends are provided with mounting screw holes and countersunk head inner grooves, and the connecting ends are in threaded connection with limiting studs. The limiting stud is provided with a stud cap and a damping pressing head, the stud cap is provided with an anti-loosening backing ring and a finger catching groove, a rotating strip is arranged in the finger catching groove, and the hot melt adhesive pipe body is composed of a rubber outer sleeve layer, a glass fiber layer, an electric heating wire layer, a heat conduction lining layer and a Teflon layer. An oil-stain-resistant oxidation-resistant layer is arranged at one end, far away from the glass fiber layer, of the rubber jacket layer. The phenomenon that threads of the external thread pipe joint connected to the connecting end in a threaded mode are loosened or even disengaged is avoided, the oil stain resistance and oxidation resistance of the outer surface of the hot melt adhesive pipe body used for conveying hot melt adhesive in a molten state on the hot melt adhesive machine are improved, and the convenience of rotating the limiting stud is improved.

Description

Technical Field

[0001] This utility model relates to the field of hot melt adhesive tube technology, and in particular to a novel hot melt adhesive tube for hot melt adhesive machines. Background Technology

[0002] A hot melt adhesive machine is a device that uses hot melt adhesive for bonding.

[0003] The working principle of a hot melt adhesive machine is as follows: one end of the hot melt adhesive tube draws molten hot melt adhesive from the storage tank into the hot melt adhesive tube, and then the molten hot melt adhesive is heated at a constant temperature while being conveyed to ensure that it is in a molten state. Then, the molten hot melt adhesive is conveyed to the spray head connected to the other end of the hot melt adhesive tube. The spray head applies the molten hot melt adhesive to the surface of the materials to be bonded. After cooling and curing, the bonding effect is achieved.

[0004] Hot melt adhesive hoses are generally composed of a rubber outer layer, a fiberglass layer, a heating wire layer, a thermally conductive inner lining layer, and a Teflon layer.

[0005] Currently, the hot melt glue tubes used for conveying molten hot melt glue on existing hot melt glue machines typically have two threaded connections at their ends, which are connected to the glue storage tank and the spray nozzle respectively. Over time, the threads at the two ends of the hot melt glue tube may become loose or even fall off, which will affect the normal conveying of molten hot melt glue.

[0006] In addition, the hot melt adhesive tubes used for conveying molten hot melt adhesive in existing hot melt adhesive machines are prone to oil stains on the surface of the rubber outer layer due to the large amount of oil in the processing workshop. Furthermore, their oxidation resistance is low, and they are prone to aging after long-term use. Overall, this greatly reduces the oil and oxidation resistance of the outer surface of the hot melt adhesive tubes used for conveying molten hot melt adhesive in hot melt adhesive machines.

[0007] The above problems are widespread and urgently need to be improved. Utility Model Content

[0008] The purpose of this utility model is to solve the above-mentioned shortcomings of the existing technology and to propose a new type of hot melt adhesive tube for hot melt adhesive machines.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A novel hot melt adhesive tube for a hot melt adhesive machine is designed, comprising a hot melt adhesive tube body, with connecting ends at both ends of the hot melt adhesive tube body. Each connecting end has a mounting screw hole and a countersunk inner groove. A limiting stud is threaded onto the connecting end, and the limiting stud is equipped with a stud cap and a damping pressure head. An anti-loosening washer is provided on the stud cap, and a finger groove is provided on the stud cap. A rotating strip is provided within the finger groove. The hot melt adhesive tube body comprises a rubber outer layer, a glass fiber layer, a heating wire layer, a thermally conductive inner lining layer, and a Teflon layer. An oil-resistant and oxidation-resistant layer is provided at the end of the rubber outer layer away from the glass fiber layer.

[0011] Furthermore, the hot melt adhesive tube has an internal cavity, and the mounting screw hole communicates with the internal cavity.

[0012] Furthermore, the countersunk inner groove, the limiting stud, and the stud cap are a set, and there are two sets arranged symmetrically in total.

[0013] Furthermore, the limiting stud is threadedly connected to the connecting end, the damping head is disposed at the end facing the mounting screw hole, the damping head is a cylindrical structure, and the damping head is made of polyurethane (PU) material.

[0014] Furthermore, the stud cap is located at the end away from the mounting screw hole, and the stud cap is a circular disc-shaped structure. The stud cap is not higher than the countersunk inner groove.

[0015] Furthermore, the finger groove is located at the end away from the mounting screw hole, and the rotating strip is an elongated structure and is disposed within the finger groove.

[0016] Furthermore, the oil-resistant and oxidation-resistant layer is a chlorinated polyethylene coating structure, and the coating thickness of the oil-resistant and oxidation-resistant layer is four to five hundred micrometers.

[0017] The novel hot melt adhesive tube for a hot melt adhesive machine proposed in this utility model has the following advantages:

[0018] 1. This utility model achieves symmetrical compression damping positioning and limiting of the outer wall surface of the external threaded pipe joint connected to the connecting end by setting a limiting stud with a damping pressure head on the threaded connection end, and setting a stud cap structure with an anti-loosening washer on the limiting stud, thereby effectively preventing the external threaded pipe joint connected to the connecting end from loosening or even falling off, and ensuring the normal delivery of molten hot melt adhesive.

[0019] 2. This utility model improves the oil and oxidation resistance of the outer surface of the hot melt adhesive tube body by setting an anti-oil and oxidation-resistant layer on the outer wall of the rubber jacket layer, thus avoiding the easy contamination of the rubber jacket layer surface with oil and oxidation aging.

[0020] 3. The utility model discloses a finger buckle groove structure with rotating strip is set up on the stud cap, effectively improve the convenience of rotating limit stud. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the whole structure perspective diagram of the utility model;

[0022] Figure 2 It is the whole structure perspective diagram of the utility model; Figure 1 It is the partial close -up view of the connecting end head in A place;

[0023] Figure 3 It is the whole structure perspective diagram of the utility model; Figure 2 It is the three -dimensional schematic view of the stud cap with limit stud and lock washer in the utility model;

[0024] Figure 4 It is the whole structure front view schematic diagram of the utility model;

[0025] Figure 5 It is the whole structure perspective diagram of the utility model; Figure 4 It is the B-B partial cross section enlarged view in the utility model;

[0026] Figure 6 It is the C-C partial cross section enlarged view in the utility model. Figure 4

[0027] In the drawing: 1 hot melt glue pipe body;10 anti-oil oxidation layer;11 pipe body inner chamber;2 connecting end head;21 installation screw hole;3 countersunk inner groove;4 stud cap;41 limit stud;411 damping pressure head;42 lock washer;43 finger buckle groove;431 rotating strip;5 rubber outer jacket layer;6 glass fiber layer;7 electric heating wire layer;8 heat conduction inner lining layer;9 iron fluorine long layer. DETAILED DESCRIPTION

[0028] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0029] Refer to Figures 1-6 ​The utility model provides a new hot melt adhesive pipe for hot melt adhesive machine, including hot melt adhesive pipe body 1, the both ends of hot melt adhesive pipe body 1 are provided with connecting end 2, install the screw hole 21 and countersunk inner groove 3 on connecting end 2, the threaded connection is limited to the stud 41 on connecting end 2, and the stud 41 is provided with stud cap 4 and damping pressure head 411, and stud cap 4 is provided with lock washer 42, and stud cap 4 is provided with finger slot 43, and finger slot 43 is provided with rotating bar 431, and hot melt adhesive pipe body 1 is provided with rubber outer jacket layer 5, glass fiber layer 6, electric heating wire layer 7, heat-conducting inner lining 8, Teflon layer 9, and rubber outer jacket layer 5 is provided with anti-oil oxidation layer 10 away from glass fiber layer 6, and hot melt adhesive pipe body 1 is hot melt adhesive pipe for hot melt adhesive machine, and the rubber outer jacket layer 5, glass fiber layer 6, electric heating wire layer 7, heat-conducting inner lining 8, Teflon layer 9 are the component structure of hot melt adhesive pipe body 1, and it is not necessary to repeat.

[0030] Lock washer 42 adopts high-elastic fluorinated rubber material, and will not appear hardening and cracking under high temperature state.

[0031] Hot melt adhesive pipe body 1 is provided with pipe body inner cavity 11, and installation screw hole 21 is communicated with pipe body inner cavity 11, when the external thread pipe connector is connected with installation screw hole 21 by screwing, the hot melt adhesive in molten state can be normally transported through the inner cavity of external thread pipe connector, installation screw hole 21 and pipe body inner cavity 11.

[0032] Installation screw hole 21 itself is corrosion-resistant and high-temperature-resistant, and can ensure the conveying effect of hot melt adhesive in molten state.

[0033] Countersunk inner groove 3, limiting stud 41 and stud cap 4 are a group, and there are two groups of symmetrically arranged, to realize the symmetric extrusion damping positioning of the outer wall surface of the external thread pipe connector connected to connecting end 2 by screwing.

[0034] Limiting stud 41 is connected with connecting end 2 by screwing, damping pressure head 411 is arranged at one end towards installation screw hole 21, damping pressure head 411 is in the form of a cylinder as a whole, damping pressure head 411 is made of polyurethane PU material, and the polyurethane PU material has excellent damping friction elasticity, corrosion resistance and high-temperature resistance, and high service life.

[0035] Stud cap 4 is arranged at one end away from installation screw hole 21, and stud cap 4 is in the form of a circular disc as a whole, and stud cap 4 is not higher than countersunk inner groove 3, to avoid that the protruding stud cap 4 collides with objects in the processing workshop.

[0036] Finger slot 43 is arranged at one end away from installation screw hole 21, and rotating bar 431 is in the form of a long strip as a whole and is arranged in finger slot 43, and it can be twisted by hand without other tools, which is very convenient.

[0037] The anti-oil and oxidation layer 10 is a chlorinated polyethylene coating structure, the coating thickness of the anti-oil and oxidation layer 10 is four hundred to five hundred microns, the chlorinated polyethylene coating structure has excellent anti-oil and oxidation property, and the anti-oil and oxidation property of the outer surface of the hot melt adhesive pipe body 1 for conveying hot melt adhesive in a molten state is improved.

[0038] Working mode: first, the external thread pipe joint is screwed with the mounting screw hole 21 through the preset external thread, then the rotating rod 431 is rotated clockwise, the limiting stud 41 is rotated clockwise, and the limiting stud 41 and the damping pressure head 411 are moved towards the outer wall of the external thread pipe joint through the threaded transmission between the connecting end head 2, and the damping pressure head 411 is extruded and positioned and limited with the outer wall surface of the external thread pipe joint, at the same time, referring to Figure 5 , the lock washer 42 is extruded with the groove inner wall of the countersunk inner groove 3, the lock washer 42 subjected to extrusion generates a transverse springback force, the transverse springback force acts on the limiting stud 41, the threaded anti-loosening effect is realized, the outer wall surface of the external thread pipe joint screwed with the connecting end head 2 is symmetrically extruded and positioned and limited, the threaded loosening or even falling off of the external thread pipe joint screwed with the connecting end head 2 is effectively avoided, and the normal conveying of the hot melt adhesive in a molten state is ensured.

[0039] Moreover, the anti-oil and oxidation layer 10 is arranged on the outer wall surface of the rubber outer sleeve layer 5 of the hot melt adhesive pipe body 1, the surface of the rubber outer sleeve layer 5 is prevented from being easily stained with oil and oxidized and aged, and the anti-oil and oxidation property of the outer surface of the hot melt adhesive pipe body 1 for conveying hot melt adhesive in a molten state of the hot melt adhesive machine is improved.

[0040] In addition, the finger is pried into the finger buckle groove 43 and holds the rotating rod 431, then the rotating rod 431 is reversely rotated, the limiting stud 41 is reversely rotated, and the convenience of rotating the limiting stud 41 is improved.

[0041] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A new hot melt adhesive tube for hot melt adhesive machine, comprising a hot melt adhesive tube body (1), characterized in that: The both ends of the hot melt adhesive pipe body (1) are provided with connecting end heads (2), the connecting end heads (2) are provided with mounting screw holes (21) and countersunk inner grooves (3), the connecting end heads (2) are threadedly connected with limiting studs (41), the limiting studs (41) are provided with stud caps (4) and damping pressure heads (411), the stud caps (4) are provided with anti-loose washers (42), the stud caps (4) are provided with finger buckle grooves (43), the finger buckle grooves (43) are provided with rotating bars (431), the hot melt adhesive pipe body (1) is provided with a rubber outer jacket layer (5), a glass fiber layer (6), an electric heating wire layer (7), a heat-conducting inner lining layer (8) and a Teflon layer (9), and the rubber outer jacket layer (5) is provided with an oil-resistant and oxidation-resistant layer (10) at one end away from the glass fiber layer (6).

2. A new hot melt adhesive tube for hot melt adhesive machine according to claim 1, characterized in that: The hot melt adhesive pipe body (1) is provided with a pipe body inner cavity (11), and the mounting screw holes (21) are communicated with the pipe body inner cavity (11).

3. A new hot melt adhesive tube for hot melt adhesive machine according to claim 1, characterized in that: The countersunk inner grooves (3), the limiting studs (41) and the stud caps (4) form a group, and there are two groups of symmetrically arranged groups.

4. A new hot melt adhesive tube for hot melt adhesive machine according to claim 1, characterized in that: The limiting studs (41) are threadedly connected with the connecting end heads (2), the damping pressure heads (411) are arranged at one end facing the mounting screw holes (21), the damping pressure heads (411) are in the form of a cylinder, and the damping pressure heads (411) are made of polyurethane (PU).

5. A new hot melt adhesive tube for hot melt adhesive machine according to claim 1, characterized in that: The stud caps (4) are arranged at one end away from the mounting screw holes (21), the stud caps (4) are in the form of a circular disc, and the stud caps (4) are not higher than the countersunk inner grooves (3).

6. A new hot melt adhesive tube for hot melt adhesive machine according to claim 1, characterized in that: The finger buckle grooves (43) are arranged at one end away from the mounting screw holes (21), and the rotating bars (431) are in the form of a long strip and arranged in the finger buckle grooves (43).

7. A new hot melt adhesive tube for hot melt adhesive machine according to claim 1, characterized in that: The oil-resistant and oxidation-resistant layer (10) is a chlorinated polyethylene coating structure, and the coating thickness of the oil-resistant and oxidation-resistant layer (10) is 400-500 microns.

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