Defoaming equipment for hot melt adhesive production

Abstract

The utility model relates to the technical field of hot melt adhesive production, in particular to defoaming equipment for hot melt adhesive production, which comprises a mixing barrel, an air exhaust joint is mounted on the top surface of the mixing barrel, a feed hopper is mounted outside the mixing barrel, one end of the feed hopper is communicated with the side wall of the mixing barrel, a plugging cover is sleeved at the other end of the feed hopper, and the other end of the plugging cover is communicated with the mixing barrel. A heating assembly is arranged outside the mixing barrel; after the raw materials are added, the feeding hopper is blocked by the blocking cover, so that the whole feeding hopper is closed, then the raw materials in the mixing barrel are melted and mixed through mutual cooperation of the heating assembly and the stirring assembly, and in the process, the mixing barrel can be connected with an external vacuumizing device through the air exhaust connector; air in the mixing barrel is discharged as much as possible under the action of the pressure pump, and the air content and the moisture content of a raw material stirring environment can be greatly reduced along with the matching of heating and suction, so that the bubble content in the hot melt adhesive stirring and forming process is greatly reduced, and the quality of a hot melt adhesive finished product is improved.

Description

Technical Field

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

[0002] Hot melt adhesive is a plastic adhesive. Its physical state changes with temperature within a certain temperature range, but its chemical properties remain unchanged. It is non-toxic and tasteless, and is an environmentally friendly chemical product. It is popular because the product itself is solid, easy to package, transport, store, solvent-free, pollution-free, non-toxic; and has the advantages of simple production process, high added value, high bonding strength, and fast speed.

[0003] After the hot melt adhesive raw materials are added to a stirring barrel in a certain proportion, the raw materials are melted and mixed with the cooperation of the heating device and the stirring device in the stirring barrel, thereby realizing the initial production of the hot melt adhesive. However, in the prior art, the stirring barrel itself is an open device and does not have airtightness. As a result, a certain number of bubbles will appear in the process of melting and stirring the hot melt adhesive raw materials by the device, and the bubbles will affect the adhesion performance of the hot melt adhesive product to a certain extent.

[0004] Therefore, in view of the above problems, a defoaming device for hot melt adhesive production is proposed. Utility Model Content

[0005] In order to make up for the shortcomings of the prior art and solve the problem that the stirring barrel in the prior art is an open device and is not airtight, which causes a certain number of bubbles to appear in the process of melting and stirring the hot melt adhesive raw materials, and the bubbles affect the adhesion performance of the hot melt adhesive product to a certain extent, a defoaming equipment for hot melt adhesive production is proposed.

[0006] The technical solution adopted by the utility model to solve its technical problems is: the utility model describes a defoaming device for hot melt adhesive production, comprising a mixing barrel, a vacuum joint is installed on the top surface of the mixing barrel, a feed hopper is installed on the outside of the mixing barrel, one end of the feed hopper is connected to the side wall of the mixing barrel, and the other end of the feed hopper is provided with a sealing cover, a heating component is arranged on the outside of the mixing barrel, and a stirring component is arranged on the inside of the mixing barrel.

[0007] Preferably, the heating assembly comprises a barrel cover and a heating rod, the barrel cover is fixed between the outer walls of the mixing barrel, the outer wall of the barrel cover is provided with a clearance opening, and the inner wall of the clearance opening is in contact with the outer wall of the feed hopper.

[0008] Preferably, the heating rod is attached to the inner walls of the mixing barrel, a control board is installed between the two ends of the heating rod, and one side of the control board penetrates to the outer wall of the barrel cover.

[0009] Preferably, a material delivery pipe is connected to the bottom of the mixing barrel, a blocking plate groove is provided on the periphery of the material delivery pipe on the bottom surface of the inner wall of the mixing barrel, and the side wall of the blocking plate groove penetrates to the periphery of the mixing barrel.

[0010] Preferably, a conveying plugging plate is clamped between the inner walls of the plugging plate groove, one end of the top surface of the conveying plugging plate is fixedly connected to a limiting convex plate, and the side wall of the limiting convex plate can fit with the inner wall of the mixing barrel.

[0011] Preferably, the stirring assembly includes a stirring shaft, which is installed at the center of the bottom surface of the mixing barrel through a bearing. A plurality of stirring plates are fixedly connected to the outer wall of the stirring shaft. The plurality of stirring plates are installed along the outer circumference of the stirring shaft at square equally divided angles. The side walls of the stirring plates slide in fit with the inner wall of the mixing barrel, and the bottom surface of the stirring plates slide in fit with the top surface of the limiting convex plate.

[0012] Preferably, a motor is installed at the bottom center of the mixing barrel, and the output shaft of the motor passes through the interior of the mixing barrel and is connected to the axis of the stirring shaft.

[0013] Beneficial effects of the utility model:

[0014] In the utility model, raw materials enter the mixing barrel from the feed hopper, and the sealing cover seals the feed hopper after the raw materials are added, so that the feed hopper is completely closed, and then the raw materials in the mixing barrel are melted and mixed through the cooperation of the heating component and the stirring component. In this process, the mixing barrel can be connected to an external vacuum device through an exhaust joint, and the air in the mixing barrel can be discharged as much as possible under the action of the suction pump. With the cooperation of heating and suction, the air and moisture content in the raw material mixing environment can be greatly reduced, the bubble content in the hot melt adhesive stirring and molding process can be greatly reduced, and the quality of the hot melt adhesive product can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 It is a three-dimensional diagram of a partial cross-section of a mixing barrel in the utility model;

[0018] Figure 3 It is a three-dimensional diagram of the sealing cover in the utility model;

[0019] Figure 4 It is a three-dimensional diagram of the heating rod and the control panel in the utility model;

[0020] Figure 5It is a stereogram of the motor and the stirring shaft in the utility model;

[0021] Legend:

[0022] 1. Mixing barrel; 11. Vacuum joint; 2. Feed hopper; 3. Sealing cover; 4. Heating component; 5. Stirring component; 41. Cylinder cover; 42. Heating rod; 411. Clearance opening; 421. Control panel; 6. Feed pipe; 12. Blocking plate slot; 7. Delivery block; 71. Limiting convex plate; 8. Stirring shaft; 81. Stirring plate; 9. Motor. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Specific examples are given below.

[0025] See also Figure 1 - Figure 5 The utility model provides a defoaming device for hot melt adhesive production, comprising a mixing barrel 1, a suction joint 11 is installed on the top surface of the mixing barrel 1, a feed hopper 2 is installed outside the mixing barrel 1, one end of the feed hopper 2 is connected to the side wall of the mixing barrel 1, and a blocking cover 3 is installed on the other end of the feed hopper 2, a heating component 4 is arranged outside the mixing barrel 1, and a stirring component 5 is arranged inside the mixing barrel 1;

[0026] During operation, the hot melt adhesive raw material enters the mixing barrel 1 from the feed hopper 2. After the raw material is added, the sealing cover 3 seals one end opening of the feed hopper 2. Thereafter, the heating component 4 and the stirring component 5 are started to heat, melt, stir and mix the raw material inside the mixing barrel 1. Before the heating component 4 and the stirring component 5 are started, the mixing barrel 1 is connected to an external vacuum device through an exhaust joint 11. Under the continuous operation of the vacuum device, the air and moisture in the mixing barrel 1 are exhausted as much as possible, thereby reducing the bubble content generated by air and moisture during the production process of the hot melt adhesive.

[0027] like Figure 1 , Figure 2 and Figure 3As shown, the heating assembly 4 includes a barrel cover 41 and a heating rod 42. The barrel cover 41 is fixed between the outer walls of the mixing barrel 1. The outer wall of the barrel cover 41 is provided with a clearance opening 411. The inner wall of the clearance opening 411 is in contact with the outer wall of the feed hopper 2. The heating rod 42 is attached to the inner walls of the mixing barrel 1. A control board 421 is installed between the two ends of the heating rod 42. One side of the control board 421 penetrates the outer wall of the barrel cover 41.

[0028] When working, the barrel cover 41 is installed on the control board 421 through the opening 411, and the mixing barrel 1 is heated under the cooperation of the control board 421 and the heating rod 42 to achieve heating and melting of the raw materials in the mixing barrel 1;

[0029] like Figure 1 and Figure 2 As shown, a material delivery pipe 6 is connected to the bottom of the mixing barrel 1, and a blocking plate groove 12 is opened on the periphery of the material delivery pipe 6 on the bottom surface of the inner wall of the mixing barrel 1. The side wall of the blocking plate groove 12 penetrates to the periphery of the mixing barrel 1, and a conveying blocking plate 7 is clamped between the inner walls of the blocking plate groove 12. One end of the top surface of the conveying blocking plate 7 is fixedly connected to a limiting convex plate 71, and the side wall of the limiting convex plate 71 can fit with the inner wall of the mixing barrel 1.

[0030] During operation, the hot melt adhesive mixed in the mixing barrel 1 is discharged from the device through the feeding pipe 6. During the mixing process of the raw materials, the feeding plug 7 installed in the plug groove 12 blocks one end of the feeding pipe 6. After the mixing is completed, the feeding plug 7 is pulled until the limiting convex plate 71 is in contact with the inner wall of the mixing barrel 1. At this time, the product can be discharged from the feeding pipe 6, wherein the limiting convex plate 71 can prevent the feeding plug 7 from being separated from the mixing barrel 1.

[0031] like Figure 1 and Figure 5 As shown, the stirring assembly 5 includes a stirring shaft 8, which is installed at the center of the bottom surface of the mixing barrel 1 through a bearing. A plurality of stirring plates 81 are fixedly connected to the outer wall of the stirring shaft 8. The plurality of stirring plates 81 are installed along the outer circumference of the stirring shaft 8 at square equally divided angles. The side walls of the stirring plates 81 fit and slide with the inner wall of the mixing barrel 1, and the bottom surface of the stirring plates 81 fits and slides with the top surface of the limiting convex plate 71. A motor 9 is installed at the bottom center of the mixing barrel 1, and the output shaft of the motor 9 passes through the interior of the mixing barrel 1 and is connected to the axis of the stirring shaft 8.

[0032] When working, the motor 9 is started, and the stirring shaft 8 and the stirring plate 81 rotate accordingly, so that the raw materials are stirred and mixed inside the mixing barrel 1, and the two sides of the stirring plate 81 are respectively attached to the inner wall of the mixing barrel 1 and the top surface of the limiting convex plate 71, which can play a certain wall scraping role;

[0033] Working principle: the hot melt adhesive raw material enters the mixing barrel 1 from the feed hopper 2. After the raw material is added, the sealing cover 3 seals the opening of one end of the feed hopper 2. Then, the heating component 4 and the stirring component 5 are started to heat, melt and stir the raw material inside the mixing barrel 1. Before the heating component 4 and the stirring component 5 are started, the mixing barrel 1 is connected to the external vacuum device through the exhaust joint 11. Under the continuous operation of the vacuum device, the air and moisture in the mixing barrel 1 are discharged as much as possible to reduce the bubble content generated by air and moisture in the production process of the hot melt adhesive. The barrel cover 41 is used to The control board 421 is installed, and the mixing barrel 1 is heated with the cooperation of the control board 421 and the heating rod 42 to achieve heating and melting of the raw materials in the mixing barrel 1. The motor 9 is started, and the stirring shaft 8 and the stirring plate 81 rotate accordingly to achieve stirring and mixing of the raw materials inside the mixing barrel 1. The hot melt adhesive mixed in the mixing barrel 1 is discharged from the device through the feed pipe 6. During the mixing of the raw materials, the delivery plug 7 installed in the plug groove 12 blocks one end of the feed pipe 6. After the mixing is completed, the delivery plug 7 is pulled until the limiting convex plate 71 fits with the inner wall of the mixing barrel 1. At this time, the product can be discharged from the device from the feed pipe 6.

[0034] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A defoaming device for hot melt adhesive production, characterized in that: The invention comprises a mixing barrel (1), the top surface of which is provided with an exhaust joint (11), a feed hopper (2) is installed outside the mixing barrel (1), one end of the feed hopper (2) is connected to the side wall of the mixing barrel (1), and the other end of the feed hopper (2) is provided with a sealing cover (3), a heating component (4) is arranged outside the mixing barrel (1), and a stirring component (5) is arranged inside the mixing barrel (1).

2. A degassing device for hot melt adhesive production according to claim 1, characterized in that: The heating assembly (4) comprises a barrel cover (41) and a heating rod (42); the barrel cover (41) is fixedly connected between the outer walls of the mixing barrel (1); the outer wall of the barrel cover (41) is provided with a clearance opening (411); the inner wall of the clearance opening (411) is in contact with the outer wall of the feed hopper (2).

3. A degassing device for hot melt adhesive production according to claim 2, characterized in that: The heating rod (42) is attached to the inner wall of the mixing barrel (1), a control panel (421) is installed between the two ends of the heating rod (42), and one side of the control panel (421) penetrates the outer wall of the barrel cover (41).

4. The degassing device for hot melt adhesive production according to claim 3, characterized in that: A material delivery pipe (6) is connected to the bottom of the mixing barrel (1), and a blocking plate groove (12) is provided on the periphery of the material delivery pipe (6) on the bottom surface of the inner wall of the mixing barrel (1), and the side wall of the blocking plate groove (12) extends to the periphery of the mixing barrel (1).

5. The degassing device for hot melt adhesive production according to claim 4, characterized in that: A conveying plugging plate (7) is clamped between the inner walls of the plugging plate groove (12), one end of the top surface of the conveying plugging plate (7) is fixedly connected to a limiting convex plate (71), and the side wall of the limiting convex plate (71) can fit with the inner wall of the mixing barrel (1).

6. The degassing device for hot melt adhesive production according to claim 1, characterized in that: The stirring assembly (5) comprises a stirring shaft (8), the stirring shaft (8) being mounted at the center of the bottom surface of the mixing barrel (1) via a bearing, a plurality of stirring plates (81) being fixedly connected to the outer wall of the stirring shaft (8), the plurality of stirring plates (81) being mounted along the outer circumference of the stirring shaft (8) at equally divided square angles, the side walls of the stirring plates (81) slidingly fitting ...

7. A degassing device for hot melt adhesive production according to claim 6, characterized in that: A motor (9) is installed at the bottom center of the mixing barrel (1), and the output shaft of the motor (9) penetrates into the interior of the mixing barrel (1) and is connected to the axis of the stirring shaft (8).

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