Polyurethane (PUR) columnar hot melt adhesive box for edge bonding machine

Abstract

The utility model provides a PUR columnar hot melt glue box of edge banding machine, including melt glue box body, melt glue base plate and melt glue cover plate, melt glue box body is equipped with the accommodation hole from top to bottom, melt glue base plate side wall is equipped with a plurality of heating hole from left to right, melt glue base plate is equipped with a plurality of lower glue hole from top to bottom, and melt glue cover plate is equipped with the lower glue hole from top to bottom. A driving air cylinder is fixedly arranged at the upper end of the glue melting cover plate, the output end of the driving air cylinder downwards penetrates through the glue melting cover plate, an extrusion piston is arranged below the glue melting cover plate, the upper end of the extrusion piston is fixedly connected with the output end of the driving air cylinder, and the outer side edge of the extrusion piston abuts against the inner side wall of the containing hole. And only the lower end of the PUR columnar hot melt adhesive can be heated by the heating rod positioned in the adhesive melting bottom plate, so that the waste of the PUR hot melt adhesive can be effectively reduced. The outer side edge of the extrusion piston abuts against the inner side wall of the containing hole so that outside air can be prevented from entering the space where the PUR columnar hot melt adhesive is located, and therefore curing of the unused PUR hot melt adhesive can be effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the edge banding machine spare parts, in particular, relate to a kind of PUR columnar hot melt adhesive's glue tank for edge banding machine. BACKGROUND

[0002] At present, the Chinese patent with the announcement number CN114211588A discloses an edge banding machine glue pot device, which comprises a feeding assembly for storing glue particles, a glue melting assembly for melting the glue particles, a glue roller rotatably connected to the glue melting assembly, a driving assembly for driving the glue roller to rotate, a glue door assembly swingably connected to the glue melting assembly, and a transmission assembly for driving the glue door assembly to swing. The glue melting assembly comprises a glue melting seat and a glue outlet connected to the glue melting seat. A heating assembly is arranged on the glue melting seat to heat the glue particles and melt them. However, when the above-mentioned edge banding machine glue pot is used to heat the PUR columnar hot melt adhesive, the entire PUR columnar hot melt adhesive will be melted, and the melted PUR hot melt adhesive will react with the moisture in the air, expand the chain, and generate a high-molecular polymer with high cohesion. It cannot be recycled and used, so it will easily lead to a large amount of waste of PUR hot melt adhesive. SUMMARY

[0003] Therefore, the utility model aims to provide a glue tank for PUR columnar hot melt adhesive of edge banding machine, which has the advantage that PUR hot melt adhesive is not easy to be wasted in large quantities.

[0004] To solve the above technical problems, the technical scheme of the utility model is as follows: a glue tank for PUR columnar hot melt adhesive of edge banding machine, comprising a glue melting tank, a glue melting bottom plate fixedly arranged at the lower end of the glue melting tank, and a glue melting cover plate rotatably arranged at the upper end of the glue melting tank. The glue melting tank is provided with a receiving hole from top to bottom, which is used to put the PUR columnar hot melt adhesive. A plurality of heating holes are provided in the side wall of the glue melting bottom plate from left to right, which are used to insert heating rods. A plurality of glue outlet holes are provided in the glue melting bottom plate from top to bottom, which are used to discharge the PUR hot melt adhesive. A connecting shaft is rotatably arranged at the lower corner of the glue melting cover plate. The lower end of the connecting shaft is fixedly inserted into the upper end of the glue melting tank. A driving cylinder is fixedly arranged at the upper end of the glue melting cover plate. The output end of the driving cylinder penetrates the glue melting cover plate downward. An extrusion piston is arranged below the glue melting cover plate. The upper end of the extrusion piston is fixedly connected to the output end of the driving cylinder. The outer edge of the extrusion piston is tightly abutted with the inner side wall of the receiving hole.

[0005] By the technical scheme, in use, first, the glue cover plate is controlled to rotate around the adapter shaft, so that the glue cover plate moves away from above the containing hole, second, the PUR columnar hot melt glue is put into the containing hole, so that the lower end of the PUR columnar hot melt glue is in contact with the upper end of the glue bottom plate, third, the glue cover plate is controlled to rotate around the adapter shaft, so that the glue cover plate moves to above the containing hole, fourth, the extrusion piston is controlled to move downward by the driving cylinder, so that the lower end of the extrusion piston is in abutment with the upper end of the PUR columnar hot melt glue, and fifth, the PUR columnar hot melt glue in the containing hole is heated by the heating rod in the heating hole.

[0006] The heating rod in the glue bottom plate only heats the lower end of the PUR columnar hot melt glue, so that the lower end of the PUR columnar hot melt glue is melted, thereby effectively reducing the waste of the PUR hot melt glue. The outer edge of the extrusion piston is in abutment with the inner side wall of the containing hole, so as to prevent external air from entering the space where the PUR columnar hot melt glue is located, thereby effectively reducing the solidification of the unused PUR hot melt glue, and further reducing the waste of the PUR hot melt glue. The PUR columnar hot melt glue is pressed downward by the extrusion piston, so as to ensure the contact between the PUR columnar hot melt glue and the glue bottom plate, so that the lower end of the PUR columnar hot melt glue can be efficiently melted.

[0007] Preferably, the extrusion piston comprises an extrusion plate arranged at the output end of the driving cylinder, and a sealing ring arranged at the outer side wall of the extrusion plate. An installation ring groove is formed at the outer side wall of the extrusion plate, and the sealing ring is sleeved in the installation ring groove. The outer ring of the sealing ring protrudes out of the installation ring groove and is in abutment with the inner hole wall of the containing hole.

[0008] By the technical scheme, the extrusion plate has high structural strength and can effectively extrude the PUR columnar hot melt glue. The outer ring of the sealing ring is in abutment with the inner hole wall of the containing hole, so as to effectively seal the gap between the extrusion plate and the glue box body, thereby preventing external air from entering the space where the PUR columnar hot melt glue is located, and effectively reducing the solidification of the unused PUR hot melt glue. The sealing ring is sleeved in the installation ring groove, so that the sealing ring is more convenient to disassemble and assemble.

[0009] Preferably, a locking opening is formed through the side wall of the glue cover plate from top to bottom. The locking opening is located away from the adapter shaft. A locking stud is arranged at the upper end of the glue box body and extends into the locking opening. A locking nut is formed at the middle part of the locking stud and is used to press the glue cover plate upward.

[0010] By the technical scheme, when the locking nut is in abutment with the glue cover plate, the locking nut and the locking stud can be used to effectively limit the glue cover plate. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1A structural schematic view of an embodiment;

[0012] Figure 2 A partial sectional view of an embodiment.

[0013] Reference signs: 1, glue tank body; 2, glue bottom plate; 3, glue cover plate; 4, accommodating hole; 5, heating hole; 6, glue discharging hole; 7, adapter shaft; 8, driving air cylinder; 9, extrusion piston; 91, extrusion plate; 92, sealing ring; 10, mounting ring groove; 11, locking opening; 12, locking stud; 13, locking nut. DETAILED DESCRIPTION

[0014] The specific embodiments of the present application are further described in detail below with reference to the accompanying drawings, so that the technical scheme of the present application is easier to understand and master.

[0015] A glue tank for PUR columnar hot melt glue of an edge banding machine, as shown in Figure 1 , Figure 2 includes a glue tank body 1, a glue bottom plate 2 fixedly arranged at the lower end of the glue tank body 1, and a glue cover plate 3 rotatably arranged at the upper end of the glue tank body 1.

[0016] The glue tank body 1 is provided with an accommodating hole 4 through from top to bottom, for placing the PUR columnar hot melt glue. In the present embodiment, the hole opening shape of the accommodating hole 4 is circular, and the inner diameter of the accommodating hole 4 is greater than or equal to the outer diameter of the PUR columnar hot melt glue.

[0017] A plurality of heating holes 5 are provided through from left to right at the side wall of the glue bottom plate 2, for inserting heating rods. In the present embodiment, the plurality of heating holes 5 are distributed at equal intervals. A plurality of glue discharging holes 6 are provided through from top to bottom in the glue bottom plate 2, for discharging the PUR hot melt glue.

[0018] The lower end corner of the glue cover plate 3 is rotatably provided with an adapter shaft 7, and the lower end of the adapter shaft 7 is fixedly inserted into the upper end of the glue tank body 1. The upper end of the glue cover plate 3 is fixedly provided with a driving air cylinder 8, and the output end of the driving air cylinder 8 penetrates downward through the glue cover plate 3. An extrusion piston 9 is arranged below the glue cover plate 3, the upper end of the extrusion piston 9 is fixedly connected with the output end of the driving air cylinder 8, and the outer side edge of the extrusion piston 9 abuts tightly against the inner side wall of the accommodating hole 4.

[0019] The extrusion piston 9 includes an extrusion plate 91 arranged at the output end of the driving air cylinder 8, and a sealing ring 92 arranged at the outer side wall of the extrusion plate 91. The outer side wall of the extrusion plate 91 is provided with a mounting ring groove 10, the sealing ring 92 is sleeved in the mounting ring groove 10, and the outer ring of the sealing ring 92 protrudes out of the mounting ring groove 10 and abuts tightly against the inner hole wall of the accommodating hole 4.

[0020] The side wall of the glue melting cover plate 3 is provided with a locking opening 11 from top to bottom, the locking opening 11 is located at the position far from the adapter shaft 7, the upper end of the glue melting box body 1 is provided with a locking stud 12, which is used to extend into the locking opening 11, the middle part of the locking stud 12 is formed with a locking nut 13, which is used to press the glue melting cover plate 3 upward.

[0021] Of course, the above is only a typical example of the present application, in addition to this, the present application can have other various specific embodiments, any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of the present application.

Claims

1. A glue box for PUR columnar hot melt adhesive used in edge banding machines, characterized in that: The assembly includes a melting tank (1), a melting base plate (2) fixedly disposed at the lower end of the melting tank (1), and a melting cover plate (3) rotatably disposed at the upper end of the melting tank (1). The melting tank (1) has a receiving hole (4) running from top to bottom for inserting PUR columnar hot melt adhesive. The side wall of the melting base plate (2) has several heating holes (5) running from left to right for inserting heating rods. The melting base plate (2) has several discharging holes (6) running from top to bottom for discharging PUR hot melt adhesive. The melting cover plate (3)... A rotatable adapter shaft (7) is provided at the lower corner of the molten adhesive box (1). The lower end of the adapter shaft (7) is fixedly inserted into the upper end of the molten adhesive box (1). A drive cylinder (8) is fixedly provided at the upper end of the molten adhesive cover plate (3). The output end of the drive cylinder (8) passes through the molten adhesive cover plate (3) downward. A squeeze piston (9) is provided below the molten adhesive cover plate (3). The upper end of the squeeze piston (9) is fixedly connected to the output end of the drive cylinder (8). The outer edge of the squeeze piston (9) abuts against the inner wall of the receiving hole (4).

2. The glue box for PUR columnar hot melt adhesive for edge banding machines according to claim 1, characterized in that: The extrusion piston (9) includes an extrusion plate (91) disposed at the output end of the drive cylinder (8) and a sealing ring (92) disposed on the outer side wall of the extrusion plate (91). An installation ring groove (10) is provided on the outer side wall of the extrusion plate (91). The sealing ring (92) is sleeved in the installation ring groove (10). The outer ring of the sealing ring (92) protrudes from the installation ring groove (10) and abuts against the inner wall of the receiving hole (4).

3. The glue box for PUR columnar hot melt adhesive for edge banding machines according to claim 1, characterized in that: A locking opening (11) is provided through the side wall of the melt cover plate (3) from top to bottom. The locking opening (11) is located on the melt cover plate (3) away from the adapter shaft (7). A locking stud (12) is provided at the upper end of the melt box (1) for extending into the locking opening (11). A locking nut (13) is formed in the middle of the locking stud (12) for pressing the melt cover plate (3) upward.

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