Device for preventing hot melt adhesive from being cooled and solidified

Abstract

The utility model discloses a device for preventing hot melt adhesive from being cooled and solidified, which comprises a support frame and a cylinder body arranged on the support frame, a reciprocating screw rod is arranged in the cylinder body, a motor is arranged at the upper end of the support frame, the output end of the motor is connected with the reciprocating screw rod, a lifting plate is arranged on the reciprocating screw rod, and a feeding channel is arranged at the upper end part of the lifting plate. A stirring assembly is arranged at the lower end of the lifting plate, a conical discharging opening is formed in the lower end of the barrel, a discharging assembly is arranged on the conical discharging opening, and the discharging assembly switches opening and closing of the discharging opening through rotation of a reciprocating lead screw. Opening and closing of the discharging port of the discharging assembly are controlled through the reciprocating lead screw, hot melt adhesive can be prevented from making contact with air, and the problem that water vapor is generated in the heating process of the hot melt adhesive is solved; and the stirring assembly is arranged at the lower end of the lifting plate, so that the hot melt adhesive in the middle of the barrel is replaced with the hot melt adhesive close to the inner wall of the barrel, and the heating degree of the internal hot melt adhesive is more uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of hot melt adhesive production, in particular to a device for preventing hot melt adhesive from cooling and solidifying. Background Art

[0002] Hot melt adhesive is a type of solvent-free solid adhesive based on thermoplastic polymers. It is an environmentally friendly adhesive that has rapid bonding, wide application, is non-toxic and pollution-free. Hot melt adhesive conforms to the needs of the times and is a development direction of adhesives in the world today.

[0003] In a comparative document of a device for preventing hot melt adhesive from solidifying for a hot melt adhesive machine with publication number CN214637891U, it is specifically proposed that "it includes a bracket, a lower shell is fixedly installed on one side of the bracket, a motor is fixedly installed inside the bracket, a bolt is fixedly installed on the output shaft of the motor, a nut sleeve is threadedly connected on the bolt, an upper shell is fixedly installed on the bottom of the nut sleeve, an agitator is fixedly installed on the bottom of the bolt, and springs are provided on both sides of the bottom of the upper shell".

[0004] The inventors found that in the comparative document, after the upper shell and the lower shell are sealed, the internal air is evacuated by an exhaust fan, but when the loading trough is unloaded again, air still enters the inside, and the air prevention and control is not thorough. For this reason, we proposed a device to prevent the hot melt adhesive from cooling and solidifying. Utility Model Content

[0005] The purpose of the utility model is to provide a device for preventing hot melt adhesive from cooling and solidifying, so as to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A device for preventing hot melt adhesive from cooling and solidifying comprises a support frame and a barrel arranged on the support frame, a reciprocating screw is arranged inside the barrel, a motor is arranged at the upper end of the support frame, the output end of the motor is connected to the reciprocating screw, a lifting plate is arranged on the reciprocating screw, a feed channel is arranged at the upper end of the lifting plate, a stirring assembly is arranged at the lower end of the lifting plate, a conical discharge port is arranged at the lower end of the barrel, a discharge assembly is arranged on the conical discharge port, and the discharge assembly switches the opening and closing of the discharge port by rotating the reciprocating screw.

[0008] Preferably, the stirring assembly includes a rotating sleeve rotatably arranged on the reciprocating screw rod, a plurality of fan blades arranged on the rotating sleeve, a plurality of connecting rods arranged on the upper end surface of the rotating sleeve, and an arc groove arranged on the lower end surface of the lifting plate.

[0009] As a preference, the connecting rods are all slidably arranged in the arc groove.

[0010] As a preferred embodiment, the discharging assembly includes a fixed seat fixed in the conical discharging port, through holes a arranged on both sides of the fixed seat, a groove opened on the inner side of the fixed seat, a rotating seat rotatably arranged in the fixed seat, through holes b arranged on both sides of the rotating seat and a protrusion arranged on the outer side of the rotating seat.

[0011] As a preference, the protrusion is slidably arranged in the groove, and the diameter of the outer wall of the rotating seat is consistent with the diameter of the inner wall of the fixed seat.

[0012] As another preferred embodiment, the cylinder body comprises an inner cylinder and an outer cylinder, and a heating wire is arranged between the inner cylinder and the outer cylinder.

[0013] Beneficial effects of the utility model:

[0014] In the utility model, a reciprocating screw is arranged in the cylinder, a lifting plate is arranged on the reciprocating screw, the lifting plate is lifted and lowered on the reciprocating screw, and the opening and closing of the discharge port of the discharge assembly is controlled by the reciprocating screw, so that the hot melt adhesive is isolated from the air, and the problem of water vapor generated during the heating process of the hot melt adhesive is avoided; a stirring assembly is arranged at the lower end of the lifting plate, so that the hot melt adhesive in the middle of the cylinder is replaced with the hot melt adhesive near the inner wall of the cylinder, so that the internal hot melt adhesive is heated more evenly.

[0015] In summary, the device has the advantages of uniform heating and high sealing, and is particularly suitable for the field of hot melt adhesive production technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 The present invention is a schematic diagram of the structure of a device for preventing hot melt adhesive from cooling and solidifying.

[0018] Figure 2 The present invention is a schematic diagram of a cross-sectional structure of a device for preventing hot melt adhesive from cooling and solidifying.

[0019] Figure 3 for Figure 2 Part A is a schematic diagram of the enlarged structure.

[0020] Figure 4 Schematic diagram of the proposed structure for the discharge assembly.

[0021] In the figure: 1-support frame; 2-cylinder; 3-reciprocating screw rod; 4-motor; 5-lifting plate; 6-feeding channel; 7-stirring assembly; 8-conical discharge port; 9-discharge assembly; 21-inner cylinder; 22-outer cylinder; 23-heating wire; 71-rotating sleeve; 72-fan blades; 73-connecting rod; 74-arc groove; 91-fixed seat; 92-through hole a; 93-groove; 94-rotating seat; 95-through hole b; 96-protrusion. DETAILED DESCRIPTION

[0022] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] Embodiment 1

[0024] Reference Figure 1-4 A device for preventing hot melt adhesive from cooling and solidifying comprises a support frame 1 and a barrel 2 arranged on the support frame 1, a reciprocating screw 3 is arranged inside the barrel 2, a motor 4 is arranged at the upper end of the support frame 1, the output end of the motor 4 is connected to the reciprocating screw 3, a lifting plate 5 is arranged on the reciprocating screw 3, a feeding channel 6 is arranged at the upper end of the lifting plate 5, a stirring assembly 7 is arranged at the lower end of the lifting plate 5, a conical discharge port 8 is arranged at the lower end of the barrel 2, a discharge assembly 9 is arranged on the conical discharge port 8, and the discharge assembly 9 switches the opening and closing of the discharge port by the rotation of the reciprocating screw 3.

[0025] Reference Figure 3 The stirring assembly 7 includes a rotating sleeve 71 rotatably arranged on the reciprocating screw rod 3, a plurality of fan blades 72 arranged on the rotating sleeve 71, a plurality of connecting rods 73 arranged on the upper end surface of the rotating sleeve 71, and an arc groove 74 arranged on the lower end surface of the lifting plate 5; the connecting rods 73 are all slidably arranged in the arc groove 74.

[0026] It is worth mentioning here that during the descending process of the stirring component 7, the hot melt adhesive in the middle of the cylinder 2 can be squeezed to the inner wall of the cylinder 2 and replaced with the hot melt adhesive on the inner wall of the cylinder 2, so that the hot melt adhesive in the cylinder 2 is heated more evenly.

[0027] Reference Figure 4 The discharge assembly 9 includes a fixed seat 91 fixed in the conical discharge port 8, through holes a92 arranged on both sides of the fixed seat 91, a groove 93 opened on the inner side of the fixed seat 91, a rotating seat 94 rotatably arranged in the fixed seat 91, through holes b95 arranged on both sides of the rotating seat 94, and a protrusion 96 arranged on the outer side of the rotating seat 94.

[0028] In this embodiment, by rotating the reciprocating screw 3 clockwise, the lower end of the reciprocating screw 3 drives the rotating seat 94 to rotate until the protrusion 96 is engaged with one end of the groove 93; when the reciprocating screw 3 rotates counterclockwise, the lower end of the reciprocating screw 3 drives the rotating seat 94 to rotate until the protrusion 96 is engaged with the other end of the groove 93.

[0029] Reference Figure 4 The protrusion 96 is slidably disposed in the groove 93 , and the outer wall diameter of the rotating seat 94 is consistent with the inner wall diameter of the fixed seat 91 .

[0030] It is worth mentioning here that when the through hole a92 is connected to the through hole b95, the hot melt adhesive can flow out of the cylinder 2; when the through hole a92 is misaligned with the through hole b95, the fixing seat 91 is in a sealed state, and the cylinder 2 is synchronously in a sealed state.

[0031] Reference Figure 2 The cylinder body 2 includes an inner cylinder 21 and an outer cylinder 22 , and a heating wire 23 is arranged between the inner cylinder 21 and the outer cylinder 22 .

[0032] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art under the technical guidance of the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A device for preventing hot melt adhesive from cooling and solidifying, comprising a support frame (1) and a cylinder (2) arranged on the support frame (1), characterized in that: A reciprocating screw (3) is arranged inside the barrel (2), a motor (4) is arranged at the upper end of the support frame (1), the output end of the motor (4) is connected to the reciprocating screw (3), a lifting plate (5) is arranged on the reciprocating screw (3), a feeding channel (6) is arranged at the upper end of the lifting plate (5), a stirring assembly (7) is arranged at the lower end of the lifting plate (5), a conical discharge port (8) is arranged at the lower end of the barrel (2), a discharge assembly (9) is arranged on the conical discharge port (8), and the discharge assembly (9) switches the opening and closing of the discharge port by rotating the reciprocating screw (3).

2. A device for preventing hot melt adhesive from cooling and solidifying according to claim 1, characterized in that: The stirring assembly (7) comprises a rotating sleeve (71) rotatably arranged on the reciprocating screw rod (3), a plurality of fan blades (72) arranged on the rotating sleeve (71), a plurality of connecting rods (73) arranged on the upper end surface of the rotating sleeve (71), and an arc groove (74) arranged on the lower end surface of the lifting plate (5).

3. A device for preventing hot melt adhesive from cooling and solidifying according to claim 2, characterized in that: The connecting rods (73) are all slidably arranged in the arc-shaped grooves (74).

4. The device for preventing hot melt adhesive from cooling and solidifying according to claim 1, characterized in that: The discharge assembly (9) comprises a fixed seat (91) fixedly arranged in the conical discharge port (8), through holes a (92) arranged on both sides of the fixed seat (91), a groove (93) opened on the inner side of the fixed seat (91), a rotating seat (94) rotatably arranged in the fixed seat (91), through holes b (95) arranged on both sides of the rotating seat (94), and a protrusion (96) arranged on the outer side of the rotating seat (94).

5. The device for preventing hot melt adhesive from cooling and solidifying according to claim 4, characterized in that: The protrusion (96) is slidably disposed in the groove (93), and the diameter of the outer wall of the rotating seat (94) is consistent with the diameter of the inner wall of the fixed seat (91).

6. The device for preventing hot melt adhesive from cooling and solidifying according to claim 1, characterized in that: The cylinder (2) comprises an inner cylinder (21) and an outer cylinder (22), and an electric heating wire (23) is arranged between the inner cylinder (21) and the outer cylinder (22).

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