Plastic particle foaming device

Abstract

The utility model belongs to the technical field of plastic particle foaming, and particularly relates to a plastic particle foaming device which comprises a fixed seat, a stirring tank is arranged above one end of the extrusion barrel, a stirring motor is fixedly installed at the top of the stirring tank, storage tanks are arranged on the two sides of the upper portion of the stirring tank, hoppers are fixedly installed at the bottoms of the storage tanks, discharging pipes are fixedly connected to the bottoms of the hoppers, and a stirring shaft is rotationally arranged in the stirring tank; a rotating shaft of the stirring motor is fixedly connected with a stirring shaft through a coupler, a plurality of stirring rods are fixed to the two sides of the stirring shaft in parallel, a scraping plate is fixedly installed at the other end of each stirring rod, a feeding pipe is fixedly installed at the bottom of the stirring tank, and a control valve is arranged in the feeding pipe. The lower end of the feeding pipe is fixedly connected to the upper part of one end of the extrusion cylinder; plastic particles and a foaming agent are evenly mixed in advance through the stirring tank and then put into the extrusion barrel to be heated and foamed, so that foaming is more uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic particle foaming, in particular to a plastic particle foaming device. Background Art

[0002] Plastic particle foaming is an important plastic processing technology. It mainly uses a specific process to fill the interior of plastic particles with tiny bubbles, thereby changing its physical properties, such as density, hardness, sound absorption and heat preservation. This technology is widely used in many fields such as automobiles, construction, packaging, etc.

[0003] The plastic particle foaming device includes a heating system, an injection screw, an expansion agent injection system, a foaming mold, and a pneumatic system. First, the heating system is responsible for heating the plastic particles to a molten state, the injection screw feeds the heated molten plastic into the mold, and the expansion agent injection system injects the expansion agent into the molten plastic through a pump, and at the same time injects air at a certain pressure to expand the plastic.

[0004] The existing plastic particle foaming device does not mix the materials in advance during use, resulting in uneven foaming, which leads to unqualified products and requires rework or re-production, further reducing production efficiency. Therefore, a plastic particle foaming device is proposed to address the above problems. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art, the existing plastic particle foaming device has uneven foaming due to the failure to mix the materials in advance during use, and the uneven foaming leads to unqualified products, which requires rework or re-production, further reducing the production efficiency. The utility model proposes a plastic particle foaming device.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a plastic particle foaming device described in the utility model comprises a fixed seat; an extrusion cylinder is fixedly installed on the upper part of the fixed seat through a mounting seat, a stirring tank is arranged above one end of the extrusion cylinder, a stirring motor is fixedly installed on the top of the stirring tank, storage tanks are arranged on both sides of the upper part of the stirring tank, a hopper is fixedly installed at the bottom of the storage tank, a rotating shaft is arranged inside the hopper, a discharge pipe is fixedly connected to the bottom of the hopper, the lower end of the discharge pipe is fixedly connected to the top of the stirring tank, a stirring shaft is rotatably arranged inside the stirring tank, the rotating shaft of the stirring motor is fixedly connected to the stirring shaft through a coupling, a plurality of stirring rods are fixedly fixed on both sides of the stirring shaft in parallel, a scraper is fixedly installed on the other end of the stirring rod, a feeding pipe is fixedly installed at the bottom of the stirring tank, and a control The invention relates to a valve control device, wherein the lower end of the feed pipe is fixedly connected to the upper part of one end of the extrusion barrel, an injection screw is rotatably arranged inside the extrusion barrel, an extrusion motor is fixedly installed at one end of the extrusion barrel, a rotating shaft of the extrusion motor is fixedly connected to one end of the injection screw, a discharge port is opened at the other end of the extrusion barrel, a foaming mold is arranged on one side of the discharge port, sliding rods are arranged on both sides below the foaming mold, a fixing plate is fixedly installed on the upper part of one end of the fixing seat near the discharge port, two ends of the sliding rod are fixedly installed on the mounting seat and the fixing plate respectively, a slide table is arranged above one end of the fixing seat near the fixing plate, sliding holes are opened on both sides of the slide table, the slide table is slidably installed on one end of the slide bar through the sliding holes, and the foaming mold is fixedly installed on the upper part of the slide table, the plastic particles and the foaming agent are mixed evenly in advance through a stirring tank, and then put into the extrusion barrel for heating and foaming, so that the foaming is more uniform.

[0007] Preferably, both ends of the rotating shaft are rotatably mounted in the hopper via bearings, rotating blades are fixedly mounted on the rotating shaft, and the rotating blades are rotatably arranged in the hopper, and material is discharged through the rotating blades to prevent the material from clogging the discharge pipe.

[0008] Preferably, a feeding motor is fixedly mounted on one side of the hopper, and a rotating shaft of the feeding motor is fixedly connected to one end of a rotating shaft, and the feeding amount of the plastic particles and the foaming agent is controlled by controlling the rotating speed of the rotating shaft of the feeding motor.

[0009] Preferably, a hydraulic cylinder is provided on one side of the slide and fixedly installed on the inner side of the fixed plate, and the front end of the piston rod is fixedly connected to one side of the slide, and the slide is pushed by the hydraulic cylinder to realize the installation and disassembly of the extrusion cylinder and the foaming mold.

[0010] Preferably, a waste box is provided on the other side of the slide, through holes are opened on both sides of the waste box, the waste box is slidably installed on the slide rod through the through holes, a slide groove is opened on one side of the lower end of the waste box, a drawer is slidably installed in the slide groove, and the waste generated in the early and late stages of foaming is collected and cleaned through the drawer.

[0011] Preferably, a spring is provided between the waste box and the mounting seat, and the spring is slidably mounted on one end of the slide rod close to the mounting seat, and the spring is used to automatically pop out the waste box when the foaming mold is separated from the extrusion cylinder.

[0012] The utility model is beneficial in that:

[0013] 1. The utility model heats the extrusion barrel first when using the foaming device, and starts two feeding motors to drive the rotating shaft to rotate, and the rotating shaft drives the rotating blades to rotate. The plastic particles and the foaming agent in the storage tank are respectively put into the stirring tank through the feeding pipe from the two hoppers under the action of the rotating blades in a certain proportion, and the stirring motor is started to drive the stirring shaft to rotate, and the stirring shaft drives the stirring rod and the scraper to rotate to stir and mix the materials. After the mixing is completed, the extrusion motor and the control valve are turned on, and the mixed materials in the stirring tank enter the extrusion barrel through the feeding pipe, and then are melted and pushed in the extrusion barrel under the action of the injection screw, and then pushed into the foaming mold for foaming and shaping. The structural design realizes the function of premixing the materials, solves the problem that the existing plastic particle foaming device does not mix the materials in advance during use, resulting in uneven foaming, and the uneven foaming leads to unqualified products, which requires rework or re-production, further reducing the production efficiency, thereby improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art 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 paying creative labor.

[0015] Figure 1 It is a schematic diagram of the structure of the discharge end of the foaming device;

[0016] Figure 2 It is a schematic diagram of the structure of the feeding end of the foaming device;

[0017] Figure 3 It is a schematic diagram of the structure of the feeding device;

[0018] Figure 4 is a schematic diagram of the structure of the mixing device;

[0019] Figure 5 It is a schematic diagram of the cross-sectional structure of the foaming device.

[0020] In the figure: 1. fixed seat; 2. extrusion barrel; 3. stirring tank; 4. storage tank; 5. hopper; 6. discharge motor; 7. discharge pipe; 8. rotating shaft; 9. rotating blade; 10. stirring motor; 11. stirring shaft; 12. stirring rod; 13. scraper; 14. feeding pipe; 15. control valve; 16. extrusion motor; 17. injection screw; 18. sliding rod; 19. waste box; 20. spring; 21. drawer; 22. slide; 23. foaming mold; 24. hydraulic cylinder. DETAILED DESCRIPTION

[0021] 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 in 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.

[0022] See also Figure 1-5As shown, a plastic particle foaming device comprises a fixing seat 1; an extrusion barrel 2 is fixedly mounted on the upper part of the fixing seat 1 through a mounting seat, a stirring tank 3 is arranged above one end of the extrusion barrel 2, a stirring motor 10 is fixedly mounted on the top of the stirring tank 3, storage tanks 4 are arranged on both sides of the upper part of the stirring tank 3, a hopper 5 is fixedly mounted on the bottom of the storage tank 4, a rotating shaft 8 is arranged inside the hopper 5, a feeding pipe 7 is fixedly connected to the bottom of the hopper 5, the lower end of the feeding pipe 7 is fixedly connected to the top of the stirring tank 3, a stirring shaft 11 is rotatably arranged inside the stirring tank 3, the rotating shaft of the stirring motor 10 is fixedly connected to the stirring shaft 11 through a coupling, and the stirring shaft 1 1 are parallelly fixed with a plurality of stirring rods 12 on both sides, a scraper 13 is fixedly installed at the other end of the stirring rod 12, a feed pipe 14 is fixedly installed at the bottom of the stirring tank 3, a control valve 15 is arranged in the feed pipe 14, the lower end of the feed pipe 14 is fixedly connected to the upper part of one end of the extrusion barrel 2, an injection screw 17 is rotatably arranged inside the extrusion barrel 2, an extrusion motor 16 is fixedly installed at one end of the extrusion barrel 2, the rotating shaft of the extrusion motor 16 is fixedly connected to one end of the injection screw 17, a discharge port is opened at the other end of the extrusion barrel 2, a foaming mold 23 is arranged on one side of the discharge port, and slide bars 18 are arranged on both sides below the foaming mold 23, and the fixed seat 1 is close to the discharge port. A fixing plate is fixedly installed on the upper part of one end of the material port, and both ends of the slide bar 18 are fixedly installed on the mounting seat and the fixing plate respectively. A slide table 22 is arranged above the fixing seat 1 near one end of the fixing plate, and slide holes are opened on both sides of the slide table 22. The slide table 22 is slidably installed on one end of the slide bar 18 through the slide holes, and the foaming mold 23 is fixedly installed on the upper part of the slide table 22; when working, the existing plastic particle foaming device is used, because the material is not mixed in advance during use, resulting in uneven foaming, and the uneven foaming leads to unqualified products, which need to be reworked or re-produced, further reducing the production efficiency. When using the foaming device, first heat the extruder 2, and start it at the same time. The two feeding motors 6 drive the rotating shaft 8 to rotate, and the rotating shaft 8 drives the rotating blades 9 to rotate. The plastic particles and the foaming agent in the storage tank 4 are respectively put into the stirring tank 3 through the feeding pipe 7 from the two hoppers 5 under the action of the rotating blades 9 in a certain proportion. The stirring motor 10 is started to drive the stirring shaft 11 to rotate, and the stirring shaft 11 drives the stirring rod 12 and the scraper 13 to rotate to stir and mix the materials. After the mixing is completed, the extrusion motor 16 and the control valve 15 are turned on. The mixed material in the stirring tank 3 enters the extrusion barrel 2 through the feeding pipe 14 and then is melted and pushed in the extrusion barrel 2 under the action of the injection screw 17, and then pushed into the foaming mold 23 for foaming and shaping.

[0023] Both ends of the rotating shaft 8 are rotatably installed in the hopper 5 through bearings, and rotating blades 9 are fixedly installed on the rotating shaft 8, and the rotating blades 9 are rotatably set in the hopper 5; during operation, when the foaming device is used, the rotating shaft 8 rotates, driving the rotating blades 9 to rotate, and the rotating blades 9 turn the materials in the hopper 5 into the discharge pipe 7, and then enter the mixing tank 3 for mixing. The rotation of the rotating blades 9 disperses the materials piled together to prevent clogging of the hopper 5.

[0024] A feeding motor 6 is fixedly installed on one side of the hopper 5, and the rotating shaft of the feeding motor 6 is fixedly connected to one end of the rotating shaft 8; when working, when using the foaming device, the feeding motor 6 is started to drive the rotating shaft 8 to rotate, and the rotating shaft 8 drives the rotating blades 9 to rotate to put the material in the hopper 5 into the mixing tank 3 through the feeding pipe 7.

[0025] A hydraulic cylinder 24 is provided on one side of the slide 22 and fixedly installed on the inner side of the fixed plate, and the front end of the piston rod is fixedly connected to one side of the slide 22; when working, when the foaming device is used, the hydraulic cylinder 24 is started to pull the slide 22 to slide on the slide rod 18 to load and unload the foaming mold 23.

[0026] A waste box 19 is arranged on the other side of the slide 22, and through holes are opened on both sides of the waste box 19. The waste box 19 is slidably installed on the slide rod 18 through the through holes. A slide groove is opened on one side of the lower end of the waste box 19, and a drawer 21 is slidably installed in the slide groove; during operation, when the foaming device is used, the hydraulic cylinder 24 pulls the slide 22 to move, so that the foaming mold 23 is separated from the extrusion barrel 2, and the waste box 19 follows and slides until it moves to below the discharge port of the extrusion barrel 2. The waste in the extrusion barrel 2 falls from the discharge port into the drawer 21 in the waste box 19 under the push of the injection screw 17 for collection. After the collection is completed, the drawer 21 is taken out and the waste is recycled.

[0027] A spring 20 is arranged between the waste box 19 and the mounting seat, and the spring 20 is slidably mounted on one end of the slide rod 18 close to the mounting seat; during operation, when the foaming device is used, when the slide 22 moves toward the fixed plate, the spring 20 stretches, pushing the waste box 19 on the slide rod 18 to move toward the fixed plate until the waste box 19 moves to below the discharge port of the extruder 2.

[0028] Working principle: when using the foaming device, first heat the extruder barrel 2, and start the two feeding motors 6 to drive the rotating shaft 8 to rotate, and the rotating shaft 8 drives the rotating blades 9 to rotate. The plastic particles and the foaming agent in the storage tank 4 are respectively put into the mixing tank 3 through the feeding pipe 7 from the two hoppers 5 under the action of the rotating blades 9 in a certain proportion, and the stirring motor 10 is started to drive the stirring shaft 11 to rotate, and the stirring shaft 11 drives the stirring rod 12 and the scraper 13 to rotate to stir and mix the materials. After the mixing is completed, the extrusion motor 16 and the control valve 15 are turned on, and the mixed materials in the mixing tank 3 enter the extruder barrel 2 through the feeding pipe 14 and then are melted and pushed in the extruder barrel 2 under the action of the injection screw 17. In the early stage, the extruder barrel 2 is not fully heated. The waste material in the extrusion tube 2 is pushed by the injection molding screw 17 and falls from the discharge port into the drawer 21 in the waste box 19 for collection. After the collection is completed, the drawer 21 is taken out to recycle the waste material. Then, the foaming mold 23 is installed with the extrusion tube 2 through the hydraulic cylinder 24. At the same time, the waste box 19 is pushed to the lower part of the discharge end of the extrusion tube 2. Then, the injection molding screw 17 pushes the molten material into the foaming mold 23 through the discharge port for foaming and shaping.

[0029] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0030] 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 plastic particle foaming device, characterized in that: The invention comprises a fixing seat (1); an extrusion cylinder (2) is fixedly mounted on the upper part of the fixing seat (1) through a mounting seat; a stirring tank (3) is arranged above one end of the extrusion cylinder (2); a stirring motor (10) is fixedly mounted on the top of the stirring tank (3); storage tanks (4) are arranged on both sides of the upper part of the stirring tank (3); a hopper (5) is fixedly mounted on the bottom of the storage tank (4); a rotating shaft (8) is arranged inside the hopper (5); a feeding pipe is fixedly connected to the bottom of the hopper (5); (7), the lower end of the feed pipe (7) is fixedly connected to the top of the stirring tank (3), a stirring shaft (11) is rotatably arranged inside the stirring tank (3), the rotating shaft of the stirring motor (10) is fixedly connected to the stirring shaft (11) through a coupling, a plurality of stirring rods (12) are fixedly arranged on both sides of the stirring shaft (11) in parallel, a scraper (13) is fixedly arranged at the other end of the stirring rod (12), a feed pipe (14) is fixedly arranged at the bottom of the stirring tank (3), the feed pipe (14) is provided with a control valve (15), the lower end of the feed pipe (14) is fixedly connected to the upper part of one end of the extrusion barrel (2), an injection screw (17) is rotatably arranged inside the extrusion barrel (2), an extrusion motor (16) is fixedly installed at one end of the extrusion barrel (2), the rotating shaft of the extrusion motor (16) is fixedly connected to one end of the injection screw (17), the other end of the extrusion barrel (2) is provided with a discharge port, a foaming mold (23) is provided on one side of the discharge port, and the foaming mold (2 3) Slide rods (18) are provided on both sides below, a fixed plate is fixedly installed on the upper part of one end of the fixed seat (1) close to the discharge port, and the two ends of the slide rod (18) are respectively fixedly installed on the mounting seat and the fixed plate, and a slide table (22) is provided above one end of the fixed seat (1) close to the fixed plate, and slide holes are opened on both sides of the slide table (22). The slide table (22) is slidably installed on one end of the slide rod (18) through the slide holes, and the foaming mold (23) is fixedly installed on the upper part of the slide table (22).

2. A plastic particle foaming device according to claim 1, characterized in that: Both ends of the rotating shaft (8) are rotatably mounted in the hopper (5) via bearings. Rotating blades (9) are fixedly mounted on the rotating shaft (8), and the rotating blades (9) are rotatably arranged in the hopper (5).

3. A plastic particle foaming device according to claim 1, characterized in that: A material discharge motor (6) is fixedly mounted on one side of the hopper (5), and a rotating shaft of the material discharge motor (6) is fixedly connected to one end of a rotating shaft (8).

4. A plastic particle foaming device according to claim 1, characterized in that: A hydraulic cylinder (24) is provided on one side of the slide (22) and is fixedly mounted on the inner side of the fixed plate, and the front end of the piston rod is fixedly connected to one side of the slide (22).

5. The plastic particle foaming device according to claim 1, characterized in that: A waste box (19) is arranged on the other side of the slide (22), and through holes are opened on both sides of the waste box (19). The waste box (19) is slidably installed on the slide rod (18) through the through holes. A slide groove is opened on one side of the lower end of the waste box (19), and a drawer (21) is slidably installed in the slide groove.

6. A plastic particle foaming device according to claim 5, characterized in that: A spring (20) is arranged between the waste box (19) and the mounting seat, and the spring (20) is slidably mounted on one end of the slide rod (18) close to the mounting seat.

Images