Hot melt adhesive stirring and mixing device and use method

Abstract

The invention relates to the technical field of hot melt adhesive production equipment, in particular to a hot melt adhesive stirring and mixing device and a using method.The hot melt adhesive stirring and mixing device comprises a stirring tank, a stirring shaft, an elastic spiral blade, a plurality of connecting shaft pieces and a driving device.The stirring shaft extends into the stirring tank and is driven by a driving motor to rotate; the spiral blade is arranged in the stirring tank and surrounds the stirring shaft; the multiple connecting shaft pieces are distributed at intervals in the spiral direction of the spiral blade, the first end of each connecting shaft piece is connected with the spiral blade, and the second end of each connecting shaft piece is in sliding connection with the stirring shaft in the axial direction of the stirring shaft; the driving device is used for driving the connecting shaft piece to slide back and forth in the axial direction of the stirring shaft so as to change the distance between adjacent blades of the spiral blades. According to the invention, the distance between the adjacent blades of the spiral blades can be changed, the contact opportunity of the spiral blades and materials is increased, and the materials are fully stirred and mixed.

Description

Technical Field

[0001] The invention relates to the technical field of hot melt adhesive production equipment, and in particular to a hot melt adhesive stirring and mixing device and a use method thereof. Background Art

[0002] Hot melt adhesive is a widely used adhesive material. In the production process, stirring and mixing is a key step. This process not only requires that the components can be evenly dispersed, but also effectively promotes physical and chemical changes such as melting and degassing of the material to ensure the quality of the final product.

[0003] The existing hot melt adhesive mixing tank design usually includes a tank body and a stirring shaft extending into the tank body and driven to rotate by a motor. The outer periphery of the stirring shaft is provided with a spiral stirring blade, and the connection between the stirring blade and the stirring shaft is mostly in the form of welding a number of fixed shafts. Although such a design can enhance the stability of the stirring blade and the durability of the overall structure, it is difficult to achieve efficient and uniform mixing of materials in actual operation due to the relatively fixed positions of the various parts of the blade. In view of the above problems, the present invention proposes a hot melt adhesive stirring and mixing device and a method of use. Summary of the invention

[0004] The object of the present invention is to provide a hot melt adhesive stirring and mixing device and a method of use, so as to solve the problems raised in the above-mentioned background technology.

[0005] According to one aspect of the present invention, there is provided a hot melt adhesive stirring and mixing device, comprising a stirring tank, a stirring shaft, an elastic spiral blade, a plurality of connecting shafts and a driving device, wherein the stirring shaft extends into the stirring tank and is driven to rotate by a driving motor; the spiral blade is arranged in the stirring tank and surrounds the stirring shaft; a plurality of connecting shafts are distributed at intervals along the spiral direction of the spiral blade, a first end of each connecting shaft is connected to the spiral blade, and a second end is connected to the stirring shaft in an axial sliding connection along the axial direction of the stirring shaft; the driving device is used to drive the connecting shaft to slide back and forth along the axial direction of the stirring shaft to change the distance between adjacent blades of the spiral blade.

[0006] Optionally, a compression spring is arranged between the second ends of adjacent connecting shafts, and the compression spring is sleeved on the outside of the stirring shaft.

[0007] Optionally, the driving device includes an electromagnet and a permanent magnet, the coil of the electromagnet is movably mounted on the output shaft of the driving motor, the output shaft is located on the inner part of the coil and serves as the iron core of the electromagnet, the permanent magnet is fixed on the second end of one of the connecting shafts, and the electromagnet and the permanent magnet repel each other when powered on.

[0008] Optionally, the driving device also includes an intermittent power-on structure, which includes an insulating sleeve, a conductive screw and a conductive ring. The insulating sleeve is fixed to the stirring tank through the two conductive screws, the conductive ring is fixed to the output shaft of the driving motor, and an elastic conductive pendulum is fixedly provided on the outer side of the conductive ring. The conductive pendulum intermittently turns on the two conductive screws when the conductive ring rotates. The conductive screw, the conductive ring, the conductive pendulum, the coil and the power supply are connected by wires to form a circuit loop.

[0009] Optionally, the stirring shaft is a polygonal column structure, the second end of the connecting shaft is provided with a first connecting hole that is compatible with the shape of the stirring shaft, the output shaft of the driving motor is provided with a second connecting hole that is compatible with the shape of the stirring shaft, the first end of the stirring shaft is fixed in the second connecting hole by a positioning screw, and the second end of the stirring shaft is provided with a blocking ring for limiting the axial movement of the second end of the connecting shaft along the axial direction of the stirring shaft.

[0010] Optionally, a limiting structure is provided at the first end of the connecting shaft, and the limiting structure includes a limiting plate, a connecting rod, a limiting rod, a limiting ring and a torsion spring. The limiting rod and the connecting rod are respectively fixed on both sides of the limiting plate, and the end of the connecting rod away from the limiting plate is rotatably connected to the first end of the connecting shaft. The torsion spring is arranged at the rotational connection position between the connecting rod and the connecting shaft. There are two limiting rods and they are respectively arranged at both ends of the limiting plate, and a limiting ring is fixedly provided at one end of each limiting rod away from the limiting plate. Both ends of the spiral blade are bent to form a hook-shaped portion.

[0011] Optionally, the stirring tank includes a tank body and a cover body, the driving motor is arranged on the outside of the cover body, the stirring shaft, the spiral blades and the connecting shaft constitute a stirring structure and are arranged on the inside of the cover body, and the stirring structure is inserted into the interior of the tank body through the opening at the top of the tank body when the cover body is closed on the tank body.

[0012] Optionally, the hot melt adhesive stirring and mixing device further comprises a frame and a linear module, the can body and the guide rails of the linear module are fixed on the frame, and the cover body is fixedly connected to the slider of the linear module via a bracket.

[0013] Optionally, a sealing ring is provided on the contact surface between the cover and the can body.

[0014] According to another aspect of the present invention, there is provided a method for using the hot melt adhesive stirring and mixing device, comprising the following steps: S1: adding hot melt adhesive raw materials into the stirring tank; S2: starting the driving motor, which drives the stirring shaft and the spiral blade to rotate, stirring and mixing the materials in the stirring tank; S3: When the driving motor drives the stirring shaft and the spiral blade to rotate, the driving device synchronously drives the connecting shaft to slide back and forth along the axial direction of the stirring shaft, so that the spiral blade can perform telescopic movement along the axial direction of the stirring shaft, thereby increasing the chance of the spiral blade contacting the material, thereby achieving sufficient stirring and mixing of the hot melt adhesive raw materials; S4: taking out the hot melt adhesive raw material after stirring from the stirring tank to complete the stirring and mixing of the hot melt adhesive raw material.

[0015] Compared with the prior art, the present invention provides a hot melt adhesive stirring and mixing device and a method of use, which have the following beneficial effects: In the process of the driving motor driving the stirring shaft and the spiral blade to rotate, the driving device synchronously drives the connecting shaft to slide back and forth along the axial direction of the stirring shaft, so that the spiral blade moves. This movement changes the distance (i.e., the relative position) between adjacent blades of the spiral blade, increases the chance of the spiral blade contacting the material, and thus achieves full stirring and mixing of the material. The present invention provides a driving device including an electromagnet and a permanent magnet. After the coil of the electromagnet is energized, the magnitude of the current flowing through the coil is continuously changed, so that the magnitude of the repulsive force between the electromagnet and the permanent magnet can be changed, thereby causing the connecting shaft to slide back and forth along the axial direction of the stirring shaft, thereby driving the spiral blade to move. This non-contact force transmission method can effectively avoid mechanical wear between the components; The present invention provides an intermittently energized structure including an insulating sleeve, a conductive screw and a conductive ring. The conductive ring, two conductive pendulums and two conductive screws together constitute a switch structure. The switch structure continuously changes the opening and closing state as the output shaft of the driving motor rotates, thereby continuously changing the energization state of the coil of the electromagnet, and then changing the size of the repulsive force between the electromagnet and the connecting shaft, thereby providing intermittent unidirectional force for the movement of the connecting shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the main structure of the present invention; Figure 3 It is a schematic diagram of the main cross-sectional structure of the present invention; Figure 4 It is a schematic diagram of the cross-section structure of the stirring tank of the present invention; Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure at point A; Figure 6 It is a schematic diagram of the split structure of the output shaft and the stirring shaft of the driving motor of the present invention; Figure 7 It is a structural schematic diagram of the spiral blade of the present invention; Figure 8 It is a schematic diagram of the assembly structure of the connecting shaft, the stirring shaft and the compression spring of the present invention; Fig. 9 It is a schematic diagram of the connecting shaft structure of the present invention.

[0017] In the figure: 1. stirring shaft; 2. spiral blade; 200. hook-shaped portion; 3. connecting shaft; 4. stirring tank; 400. tank body; 401. cover; 5. compression spring; 6. drive motor; 600. output shaft; 7. electromagnet; 8. permanent magnet; 9. insulating sleeve; 10. conductive screw; 11. conductive ring; 12. conductive pendulum; 13. first connecting hole; 14. second connecting hole; 15. positioning screw; 16. blocking ring; 17. limit plate; 18. connecting rod; 19. limit rod; 20. limit ring; 21. torsion spring; 22. assembly notch; 23. linear module; 24. feeding pipe; 25. discharge pipe; 26. ball valve; 27. frame; 28. sealing ring; 29. ​​bracket. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Example: See Figures 1 to 9 According to one aspect of an embodiment of the present invention, a hot melt adhesive stirring and mixing device is provided, which includes a stirring tank 4, a stirring shaft 1, an elastic spiral blade 2, a plurality of connecting shafts 3 and a driving device, wherein the stirring shaft 1 extends into the stirring tank 4 and is driven to rotate by a driving motor 6; the spiral blade 2 is arranged in the stirring tank 4 and around the stirring shaft 1, and specifically, the spiral blade 2 can be made of spring steel; a plurality of connecting shafts 3 are distributed at intervals along the spiral direction of the spiral blade 2, a first end of each connecting shaft 3 is connected to the spiral blade 2, and a second end is connected to the stirring shaft 1 in an axial sliding connection along the stirring shaft 1; the driving device is used to drive the connecting shaft 3 to slide back and forth along the axial direction of the stirring shaft 1 to change the distance between adjacent blades of the spiral blade 2.

[0020] In the hot melt adhesive stirring and mixing device with the above structure, when the driving motor 6 drives the stirring shaft 1 and the spiral blade 2 to rotate, the driving device synchronously drives the connecting shaft 3 to slide back and forth along the axial direction of the stirring shaft 1, thereby moving the spiral blade 2. This movement changes the distance between adjacent blades of the spiral blade 2 (i.e., the relative position), increases the chance of the spiral blade 2 contacting the material, and thus achieves sufficient stirring and mixing of the material.

[0021] It is understandable that, since the spiral blade 2 is elastic, the driving device only needs to be able to intermittently apply a unidirectional force to the connecting shaft 3, so that the elastic force of the spiral blade 2 itself can be used to achieve the reciprocating motion of the connecting shaft 3 along the axial direction of the stirring shaft 1.

[0022] In this exemplary embodiment, a compression spring 5 is provided between the second ends of adjacent connecting shaft members 3, and the compression spring 5 is sleeved outside the stirring shaft 1. The provision of the compression spring 5 can provide a rebound force in the axial direction of the stirring shaft 1 for the reset of the spiral blade 2, thereby increasing the jumping of the spiral blade 2 in this direction, and further improving the stirring and mixing effect.

[0023] In this exemplary embodiment, the driving device includes an electromagnet 7 and a permanent magnet 8. The coil of the electromagnet 7 is movably sleeved on the output shaft 600 of the driving motor 6. The output shaft 600 is located at the inner part of the coil as the iron core of the electromagnet 7. The permanent magnet 8 is fixed to the second end of one of the connecting shafts 3. The electromagnet 7 and the permanent magnet 8 repel each other when powered on. In specific implementation, the coil of the electromagnet 7 is powered on, and the current flowing through the coil is continuously changed. This can change the repulsive force between the electromagnet 7 and the permanent magnet 8, so that the connecting shaft 3 slides back and forth along the axial direction of the stirring shaft 1, thereby driving the spiral blade 2 to move. This non-contact force transmission method can effectively avoid mechanical wear between the components. Of course, as long as the connecting shaft 3 can be driven to slide back and forth along the axial direction of the stirring shaft 1, there is no special restriction on the specific structural form of the driving device.

[0024] In this exemplary embodiment, the drive device also includes an intermittent power-on structure, which includes an insulating sleeve 9, a conductive screw 10 and a conductive ring 11. The insulating sleeve 9 is fixed to the stirring tank 4 through two conductive screws 10, and the conductive ring 11 is fixed to the output shaft 600 of the drive motor 6. An elastic conductive pendulum 12 is fixed to the outer side of the conductive ring 11. The conductive pendulum 12 intermittently turns on the two conductive screws 10 when the conductive ring 11 rotates. The conductive screw 10, the conductive ring 11, the conductive pendulum 12, the coil and the power supply are connected by wires to form a circuit loop. In specific implementation, the conductive ring 11 rotates together with the output shaft 600 of the motor, and the conductive pendulum 12 intermittently and synchronously contacts the two conductive screws 10 along with the rotating conductive ring 11. That is to say, a switch structure is formed between the conductive ring 11, the two conductive pendulums 12 and the two conductive screws 10. The switch structure continuously changes the opening and closing state as the output shaft 600 of the drive motor 6 rotates, thereby continuously changing the power-on state of the coil of the electromagnet 7, and then changing the size of the repulsive force between the electromagnet 7 and the connecting shaft 3, thereby providing intermittent unidirectional force for the movement of the connecting shaft 3.

[0025] In this exemplary embodiment, the stirring shaft 1 is a multi-prism structure, the second end of the connecting shaft 3 is provided with a first connecting hole 13 adapted to the shape of the stirring shaft 1, the output shaft 600 of the driving motor 6 is provided with a second connecting hole 14 adapted to the shape of the stirring shaft 1, the first end of the stirring shaft 1 is fixed in the second connecting hole 14 by a positioning screw 15, and the second end of the stirring shaft 1 is provided with a blocking ring 16 for limiting the second end of the connecting shaft 3 from moving along the axial direction of the stirring shaft 1. Such a configuration can facilitate the assembly and disassembly of the stirring shaft 1, the connecting shaft 3, and the output shaft 600 of the driving motor 6.

[0026] In this exemplary embodiment, a limiting structure is provided at the first end of the connecting shaft 3, and the limiting structure includes a limiting plate 17, a connecting rod 18, a limiting rod 19, a limiting ring 20 and a torsion spring 21. The limiting rod 19 and the connecting rod 18 are respectively fixed on both sides of the limiting plate 17, and the end of the connecting rod 18 away from the limiting plate 17 is rotatably connected to the first end of the connecting shaft 3. The torsion spring 21 is arranged at the rotational connection position between the connecting rod 18 and the connecting shaft 3. There are two limiting rods 19 and they are respectively arranged at both ends of the limiting plate 17. A limiting ring 20 is fixedly provided at the end of each limiting rod 19 away from the limiting plate 17, and both ends of the spiral blade 2 are bent to form a hook-shaped portion 200. An assembly notch 22 is formed between the two limiting rods 19. When installing the spiral blade 2, the spiral blade 2 is embedded in the assembly notch 22 formed at the first end of each connecting shaft 3. The limiting ring 20 and the limiting plate 17 cooperate to limit the spiral blade 2 in the assembly notch 22. The torsion spring 21 ensures that the two limiting rods 19 are respectively pressed against the two sides of the spiral blade 2. In addition, the spiral blade 2 is limited by the hook-shaped parts 200 at both ends, so that the end of the spiral blade 2 can be more tightly connected to the first end of the connecting shaft 3, which has an anti-slip effect. The spiral blade 2 is installed in this way, so that the spiral blade 2 can slide in the assembly notch 22 at the first end of the connecting shaft 3, which facilitates the telescopic movement of the spiral blade 2 along the axial direction of the stirring shaft 1. And when disassembling the spiral blade 2, it is only necessary to rotate the limiting structure to move the spiral blade 2 out of each assembly notch 22 to disassemble it.

[0027] In this exemplary embodiment, the stirring tank 4 includes a tank body 400 and a cover 401, a driving motor 6 is arranged on the outside of the cover 401, a stirring shaft 1, a spiral blade 2 and a connecting shaft 3 constitute a stirring structure and are arranged on the inside of the cover 401, and the stirring structure is inserted into the inside of the tank body 400 through the opening at the top of the tank body 400 when the cover 401 is covered on the tank body 400. By integrating these stirring structures on the cover 401, when the cover 401 is removed from the opening at the top of the tank body 400, these stirring structures can be removed from the tank body 400 together with the cover 401, which facilitates the cleaning and maintenance of the stirring structure and the inside of the tank body 400. In addition, the opening at the top of the can body 400 can be used as a feed port before stirring and mixing, through which most of the hot melt adhesive raw materials can be added into the can body 400. During the stirring and mixing period, since the opening of the can body 400 is covered by the cover body 401, it is inconvenient to add materials later. Therefore, in this example, a feed pipe 24 is also provided on the cover body 401. During the stirring and mixing period, the operator can easily add part of the hot melt adhesive raw materials into the can body 400 through the feed pipe 24. In order to conveniently discharge the stirred and mixed materials, a discharge pipe 25 is also provided at the bottom of the can body 400, and a ball valve 26 is installed on the discharge pipe 25.

[0028] In order to facilitate the opening and closing of the cover 401, in this exemplary embodiment, the hot melt adhesive stirring and mixing device further includes a frame 27 and a linear module 23. The can body 400 and the guide rails of the linear module 23 are fixed on the frame 27, and the cover 401 is fixedly connected to the slider of the linear module 23 through the bracket 29. The linear module 23 is driven to drive the cover 401 to move up and down, thereby realizing the operation of opening and closing the cover 401.

[0029] In this exemplary embodiment, a sealing ring 28 is provided on the contact surface between the cover 401 and the can body 400. The provision of the sealing ring 28 increases the sealing between the cover 401 and the can body 400, and prevents the hot melt adhesive from overflowing from the joint between the cover 401 and the can body 400.

[0030] According to another aspect of an embodiment of the present invention, a method for using the hot melt adhesive stirring and mixing device is provided, comprising the following steps: S1: Add the hot melt adhesive raw material into the mixing tank 4; S2: Start the driving motor 6, which drives the stirring shaft 1 and the spiral blade 2 to rotate, stirring and mixing the materials in the stirring tank 4; S3: When the driving motor 6 drives the stirring shaft 1 and the spiral blade 2 to rotate, the driving device synchronously drives the connecting shaft 3 to slide back and forth along the axial direction of the stirring shaft 1, so that the spiral blade 2 can perform telescopic movement along the axial direction of the stirring shaft 1, thereby increasing the chance of the spiral blade 2 contacting the material, thereby achieving sufficient stirring and mixing of the hot melt adhesive raw materials; S4: taking out the hot melt adhesive raw material after stirring from the stirring tank 4 to complete the stirring and mixing of the hot melt adhesive raw material.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hot melt adhesive stirring and mixing device, characterized in that: include: Mixing tank (4); A stirring shaft (1) extends into the stirring tank (4) and is driven to rotate by a driving motor (6); An elastic spiral blade (2) is disposed in the stirring tank (4) and is arranged around the stirring shaft (1); a plurality of connecting shaft members (3) spaced apart along the spiral direction of the spiral blade (2), wherein a first end of each connecting shaft member (3) is connected to the spiral blade (2), and a second end is slidably connected to the stirring shaft (1) along the axial direction of the stirring shaft (1); and a driving device for driving the connecting shaft (3) to slide back and forth along the axial direction of the stirring shaft (1) so as to change the distance between adjacent blades of the spiral blade (2).

2. The hot melt adhesive stirring and mixing device according to claim 1, characterized in that: A compression spring (5) is arranged between the second ends of adjacent connecting shaft members (3), and the compression spring (5) is sleeved on the outside of the stirring shaft (1).

3. The hot melt adhesive stirring and mixing device according to claim 1, characterized in that: The driving device comprises an electromagnet (7) and a permanent magnet (8); the coil of the electromagnet (7) is movably sleeved on an output shaft (600) of the driving motor (6); the output shaft (600) is located inside the coil and serves as an iron core of the electromagnet (7); the permanent magnet (8) is fixed to the second end of one of the connecting shafts (3); and the electromagnet (7) and the permanent magnet (8) repel each other when powered on.

4. The hot melt adhesive stirring and mixing device according to claim 3, characterized in that: The driving device further comprises an intermittent power-on structure, the intermittent power-on structure comprising an insulating sleeve (9), a conductive screw (10) and a conductive ring (11), the insulating sleeve (9) being fixed to the stirring tank (4) via the two conductive screws (10), the conductive ring (11) being fixed to the output shaft (600) of the driving motor (6), and an elastic conductive pendulum (12) being fixedly arranged on the outer side of the conductive ring (11), the conductive pendulum (12) intermittently conducting the two conductive screws (10) when the conductive ring (11) rotates, and the conductive screw (10), the conductive ring (11), the conductive pendulum (12), the coil and the power supply are connected by wires to form a circuit loop.

5. The hot melt adhesive stirring and mixing device according to claim 1, characterized in that: The stirring shaft (1) is a multi-prism structure, the second end of the connecting shaft (3) is provided with a first connecting hole (13) matching the shape of the stirring shaft (1), the output shaft (600) of the driving motor (6) is provided with a second connecting hole (14) matching the shape of the stirring shaft (1), the first end of the stirring shaft (1) is fixed in the second connecting hole (14) by a positioning screw (15), and the second end of the stirring shaft (1) is provided with a blocking ring (16) for limiting the axial movement of the second end of the connecting shaft (3) along the stirring shaft (1).

6. The hot melt adhesive stirring and mixing device according to claim 1, characterized in that: A limiting structure is provided at the first end of the connecting shaft (3), the limiting structure comprising a limiting plate (17), a connecting rod (18), a limiting rod (19), a limiting ring (20) and a torsion spring (21); the limiting rod (19) and the connecting rod (18) are respectively fixed on two sides of the limiting plate (17); one end of the connecting rod (18) away from the limiting plate (17) is rotatably connected to the first end of the connecting shaft (3); the torsion spring (21) is provided at a rotatably connected position between the connecting rod (18) and the connecting shaft (3); there are two limiting rods (19) and they are respectively provided at two ends of the limiting plate (17); one limiting ring (20) is fixedly provided at one end of each limiting rod (19) away from the limiting plate (17); and both ends of the spiral blade (2) are bent to form a hook-shaped portion (200).

7. The hot melt adhesive stirring and mixing device according to claim 1, characterized in that: The stirring tank (4) comprises a tank body (400) and a cover body (401); the driving motor (6) is arranged on the outside of the cover body (401); the stirring shaft (1), the spiral blades (2) and the connecting shaft (3) constitute a stirring structure and are arranged on the inside of the cover body (401); when the cover body (401) is covered on the tank body (400), the stirring structure is inserted into the interior of the tank body (400) through an opening at the top of the tank body (400).

8. The hot melt adhesive stirring and mixing device according to claim 7, characterized in that: It also includes a frame (27) and a linear module (23), wherein the can body (400) and the guide rails of the linear module (23) are fixed on the frame (27), and the cover body (401) is fixedly connected to the slider of the linear module (23) via a bracket (29).

9. The hot melt adhesive stirring and mixing device according to claim 8, characterized in that: A sealing ring (28) is provided on the contact surface between the cover body (401) and the can body (400).

10. A method of using the hot melt adhesive stirring and mixing device according to any one of claims 1 to 9, characterized in that: The steps include: S1: adding hot melt adhesive raw materials into the stirring tank (4); S2: starting the driving motor (6), the driving motor (6) driving the stirring shaft (1) and the spiral blade (2) to rotate, stirring and mixing the materials in the stirring tank (4); S3: When the driving motor (6) drives the stirring shaft (1) and the spiral blade (2) to rotate, the driving device synchronously drives the connecting shaft (3) to slide back and forth along the axial direction of the stirring shaft (1), thereby causing the spiral blade (2) to perform telescopic movement along the axial direction of the stirring shaft (1), thereby increasing the chance of the spiral blade (2) contacting the material, thereby achieving sufficient stirring and mixing of the hot melt adhesive raw material; S4: taking out the hot melt adhesive raw material after stirring from the stirring tank (4), thereby completing the stirring and mixing of the hot melt adhesive raw material.

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