CN213704254U

CN213704254U - Automatic cleaning structure for pre-foaming machine

Info

Publication number: CN213704254U
Application number: CN202021938277.6U
Authority: CN
Inventors: 黄洁
Original assignee: Taicang Dazhong Packaging Material Co ltd
Current assignee: Taicang Dazhong Packaging Material Co ltd
Priority date: 2020-09-08
Filing date: 2020-09-08
Publication date: 2021-07-16
Anticipated expiration: 2030-09-08

Abstract

An automatic cleaning structure for a pre-foaming machine comprises a pre-foaming barrel, a feeding hole, a discharging hole and a stirring structure assembly; the stirring structure assembly comprises a stirring motor, a stirring coupler, a stirring shaft structure and a stirring head structure; the stirring head structure comprises an upper fixing flange, a lower fixing flange, a bearing, a first stirring head component, a second stirring head component and a third stirring head component; the first stirring head assembly, the second stirring head assembly and the third stirring head assembly are identical in structure and comprise a stirring head support, stirring blades, a side cleaning structure and a bottom cleaning structure. The foamed plastic raw material enters the pre-foaming barrel from the feeding hole, the foamed plastic raw material is stirred through the stirring structure assembly, and the foamed plastic raw material after pre-foaming is finished is discharged from the discharging hole. In the stirring process, the side edge cleaning structure and the bottom cleaning structure respectively scrape the side wall and the bottom of the pre-foaming barrel at regular time and have a cleaning effect, so that the uneven heating is improved, and the cleaning effect is realized.

Description

Automatic cleaning structure for pre-foaming machine

Technical Field

The utility model relates to a foamed plastic production field especially relates to an automatic cleaning structure for prefoaming machine.

Background

The foamed plastic is a high polymer material formed by dispersing a large number of gas micropores in solid plastic, has the characteristics of light weight, heat insulation, sound absorption, shock absorption and the like, and has dielectric properties superior to those of matrix resin. Due to the excellent performance of the foamed plastic, the foamed plastic is more and more widely applied to the fields of daily life, object packaging and transportation, building construction, aerospace and the like.

In the production process of foam plastics, a prefoamer is mostly adopted for foam prefoaming, beads containing foaming agents are slowly heated to above 90 ℃ and begin to soften, the foaming agents in the beads are heated and gasified to generate pressure so as to expand the beads, and the prefoaming can reduce the density gradient during molding so as to realize uniform expansion molding.

In order to improve the pre-foaming efficiency of the pre-foaming machine, the stirring structure is arranged in the pre-foaming barrel to rotate, and the stirring blades on the stirring structure can stir the foamed plastic raw material in the pre-foaming barrel at a constant speed, so that the raw material is uniformly heated, and the caking phenomenon is reduced. However, the pre-foaming machine used at present has the phenomenon that the pre-foaming barrel is not easy to clean: during the stirring, especially in pre-expansion bucket lateral wall and bottom position, the raw materials appears adhering to the phenomenon easily to not only lead to the foamed plastic raw materials to be heated inhomogeneously, the phenomenon of caking appears easily, greatly reduced product quality, need regularly carry out cleaning work to the pre-expansion bucket moreover, this has just greatly increased workman's amount of labour, has improved labour cost, in addition, the pre-expansion machine can't carry out continuous pre-expansion work, and its work efficiency is not high.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims at providing a pre-expansion machine self-cleaning structure has solved the problem that exists when pre-expansion machine is pre-expanded.

The technical scheme is as follows: the utility model provides an automatic cleaning structure for a pre-foaming machine, which comprises a pre-foaming barrel, a feed inlet, a discharge outlet and a stirring structure assembly, wherein the feed inlet is arranged at the upper end of the pre-foaming barrel, the discharge outlet is arranged at the lower end of the pre-foaming barrel, and the stirring structure assembly is arranged in the pre-foaming barrel; the stirring structure assembly comprises a stirring motor, a stirring coupler, a stirring shaft structure and a stirring head structure, wherein one end of the stirring motor is connected with one end of the stirring shaft structure through the stirring coupler, and the stirring head structure is arranged on the stirring shaft structure; the stirring head structure comprises an upper fixing flange, a lower fixing flange, a bearing, a first stirring head component, a second stirring head component and a third stirring head component, wherein the upper fixing flange and the lower fixing flange are vertically arranged, the bearing is arranged in the lower fixing flange, the axes of the fixing flanges above the first stirring head component, the second stirring head component and the third stirring head component are arranged in a circumferential array by taking the centers as the centers, and the upper ends and the lower ends of the fixing flanges are respectively connected with the upper fixing flange and the lower fixing flange; first stirring head subassembly, second stirring head subassembly and third stirring head subassembly structure are the same, first stirring head subassembly is including stirring head support, stirring vane, the clean structure of side and the clean structure in bottom, stirring vane has a plurality of groups, and equidistant top-down sets up on stirring head support, the clean structure in side sets up at stirring head support side, the clean structure in bottom sets up at stirring head support lower extreme. The foamed plastic raw materials get into the pre-foaming bucket from the feed inlet, stir its through stirring structure assembly to improve whole pre-foaming efficiency, the foamed plastic raw materials ejection of compact from the discharge gate after the pre-foaming is accomplished. Wherein, the agitator motor in the stirring structure assembly drives the stirring shaft structure to rotate through the stirring shaft coupling to drive the stirring head structure to stir the foamed plastic raw materials. The stirring head structure is fixed on the stirring shaft structure through an upper fixing flange and a lower fixing flange provided with a bearing, and during stirring, the first stirring head assembly, the second stirring head assembly and the third stirring head assembly rotate along with the upper fixing flange fixed with the main shaft. The foamed plastic raw materials constantly disperses through the stirring vane who sets up on stirring first support, thereby it is heated the homogeneity has been improved, after stirring the certain time, clean structure of side and the clean structure of bottom scrape the material clean effect to pre-foaming bucket lateral wall and bottom respectively, it attaches to glutinous to pre-foaming bucket lateral wall and bottom not only to have avoided the foamed plastic raw materials, thereby lead to caking or overheated phenomenon, thereby it is inhomogeneous to lead to being heated, and clean effect has been played, the shut down cleaning after the pre-foaming is finished has been saved, thereby the work efficiency of pre-foaming machine has been improved greatly.

Further, the clean structure of side is the same with the clean structure in bottom, the clean structure of side is including clean cylinder, clean scraper, first scraper dog, second scraper dog and cylinder safety cover, clean cylinder has a plurality of groups, and the equidistant setting is on clean scraper, first scraper dog, second scraper dog set up respectively in clean scraper both sides, the cylinder safety cover sets up in the clean cylinder outside. In the stirring process, stir after the certain period, clean cylinder promotes clean scraper to the bucket inner wall of sending out in advance or the bottom direction removes the certain distance, thereby scrape material cleaning work through clean scraper to bucket inner wall of sending out in advance or bottom along with the rotatory stirring work of stirring head structure, wherein, first scraper dog, second scraper dog not only carries out certain guide effect to the moving direction of clean scraper, and when accomplishing cleaning work, clean cylinder promotes the in-process that clean scraper moved back, the foam plastic raw materials that adheres to on it when clean scraper scrapes the material can be got rid of by first scraper dog, second scraper dog. The cylinder safety cover carries out the guard action to the cylinder, avoids the foamed plastic raw materials to cause the damage to it.

Furthermore, one end of the cleaning scraper for scraping materials is arranged at an oblique angle. The ability of scraping is greatly improved.

Further, the stirring shaft structure comprises a main shaft, helical blades and a shaft barrel, wherein the helical blades are arranged on the main shaft, and the shaft barrel is arranged on the outer side of the helical blades. The stirring shaft structure is except driving the stirring head structure and rotating, and the foamed plastic raw material that reachs the pre-foaming barrel head portion is upwards conveyed along helical blade, is shed when reacing helical blade highest point position, and the foamed plastic raw material is the unrestrained in-process of umbelliform, and rethread stirring head structure stirs once more to improved stirring efficiency greatly, improved the raw materials homogeneity of being heated, thereby accelerated going on of pre-foaming work.

Furthermore, the shaft cylinder comprises a shaft cylinder main body and a shaft cylinder fixing frame, and the shaft cylinder fixing frame is arranged at the lower end of the shaft cylinder main body. The shaft barrel main body is arranged at the bottom of the pre-foaming barrel through a shaft barrel fixing frame.

Further, the height of the shaft barrel main body is smaller than the total length of the helical blade. The axle cylinder main part of axle cylinder and helical blade constitute the promotion passageway of foam plastic raw materials, reach helical blade and be higher than axle cylinder main part position when the foam plastic raw materials, owing to do not have blockking of axle cylinder main part, the raw materials is shed out under helical blade spiral effect to improve holistic homogeneity of being heated, avoided appearing phenomenons such as caking.

Further, the stirring blade comprises a first fixed shaft, a second fixed shaft and a blade, and the first fixed shaft and the second fixed shaft are respectively arranged at two ends of the blade. The blades are fixed on the stirring head bracket through the first fixed shaft and the second fixed shaft.

Further, the stirring blade is arranged obliquely at a certain angle. Not only reduces the abrasion to the edge of the stirring blade, but also improves the whole stirring capacity.

Above-mentioned technical scheme can find out, the utility model discloses following beneficial effect has: 1) the cleaning structure is arranged to clean the inner wall and the bottom of the pre-foaming barrel at regular time, so that the heating uniformity of the raw materials is improved, the phenomenon of raw material caking or excessive heating is avoided, the original shutdown cleaning procedure is saved, the pre-foaming machine can perform continuous pre-foaming work, the working efficiency is greatly improved, the workload of workers is reduced, and the labor cost is reduced; 2) the setting has helical blade's (mixing) shaft structure, carries out many times spiral lifting to the foamed plastic raw materials of whereabouts and throws the material, carries out high-efficient stirring with the first structural cooperation of stirring to the raw materials to not only improve its stirring efficiency greatly, shortened the period of sending out in advance, improved the raw materials homogeneity of being heated moreover, improved product quality.

Drawings

Fig. 1 is a perspective view of the present invention;

FIG. 2 is a perspective view of the stirring structure assembly;

FIG. 3 is a perspective view of the mixing head structure;

FIG. 4 is a perspective view of a first agitator head assembly;

FIG. 5 is a perspective view of a side cleaning structure;

FIG. 6 is a cross-sectional view of the agitator shaft configuration;

fig. 7 is a perspective view of the stirring blade.

In the figure: the pre-foaming device comprises a pre-foaming barrel 1, a feeding hole 2, a discharging hole 3, a stirring structure assembly 4, a stirring motor 41, a stirring coupler 42, a stirring shaft structure 43, a main shaft 431, a spiral blade 432, a shaft barrel 433, a shaft barrel main body 4331, a shaft barrel fixing frame 4432, a stirring head structure 44, an upper fixing flange 441, a lower fixing flange 442, a bearing 443, a first stirring head assembly 444, a stirring head bracket 4441, a stirring blade 4442, a first fixing shaft 44421, a second fixing shaft 44422, a blade 44423, a side cleaning structure 4443, a cleaning air cylinder 44431, a cleaning scraper 44432, a first scraper stopper 44433, a second scraper stopper 44434, an air cylinder protective cover 44435, a bottom cleaning structure 4444, a second stirring head assembly 445 and a third stirring head assembly 446.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example one

As shown in fig. 1, the perspective view of the present invention includes a pre-foaming barrel 1, a feeding port 2, a discharging port 3 and a stirring structure assembly 4, wherein the feeding port 2 is arranged at the upper end of the pre-foaming barrel 1, the discharging port 3 is arranged at the lower end of the pre-foaming barrel 1, and the stirring structure assembly 4 is arranged in the pre-foaming barrel 1; fig. 2 is a perspective view of the stirring structure assembly 4, which includes a stirring motor 41, a stirring shaft coupler 42, a stirring shaft structure 43 and a stirring head structure 44, wherein one end of the stirring motor 41 is connected to one end of the stirring shaft structure 43 through the stirring shaft coupler 42, and the stirring head structure 44 is disposed on the stirring shaft structure 43; as shown in fig. 3, the stirring head structure 44 is a perspective view, and includes an upper fixing flange 441, a lower fixing flange 442, a bearing 443, a first stirring head assembly 444, a second stirring head assembly 445, and a third stirring head assembly 446, the upper fixing flange 441 and the lower fixing flange 442 are vertically disposed, the bearing 443 is disposed inside the lower fixing flange 442, the first stirring head assembly 444, the second stirring head assembly 445, and the third stirring head assembly 446 are disposed in a circumferential array with the axis of the upper fixing flange 441 as the center, and the upper end and the lower end of the first stirring head assembly are respectively connected to the upper fixing flange 441 and the lower fixing flange 442; the first stirring head assembly 444, the second stirring head assembly 445 and the third stirring head assembly 446 have the same structure, and as shown in fig. 4, the first stirring head assembly 444 is a perspective view of the first stirring head assembly, and includes a stirring head bracket 4441, stirring blades 4442, side cleaning structures 4443 and a bottom cleaning structure 4444, the stirring blades 4442 are provided with a plurality of groups, and are arranged on the stirring head bracket 4441 from top to bottom at equal intervals, the side cleaning structures 4443 are arranged on the side of the stirring head bracket 4441, and the bottom cleaning structures 4444 are arranged at the lower end of the stirring head bracket 4441.

The side cleaning structure 4443 and the bottom cleaning structure 4444 have the same structure, and as shown in fig. 5, the side cleaning structure 4443 is a perspective view of the side cleaning structure 4443, and includes a cleaning cylinder 44431, a cleaning blade 44432, a first blade stopper 44433, a second blade stopper 44434 and a cylinder protective cover 44435, wherein the cleaning cylinder 44431 has a plurality of groups arranged on the cleaning blade 44432 at equal intervals, the first blade stopper 44433 and the second blade stopper 44434 are respectively arranged on two sides of the cleaning blade 44432, and the cylinder protective cover 44435 is arranged outside the cleaning cylinder 44431.

One end of the cleaning blade 44432 where the material is scraped is provided at an oblique angle.

Fig. 6 shows a cross-sectional view of the stirring shaft structure 43, which includes a main shaft 431, a spiral blade 432 and a shaft barrel 433, wherein the spiral blade 432 is disposed on the main shaft 431, and the shaft barrel 433 is disposed outside the spiral blade 432.

The shaft barrel 433 comprises a shaft barrel main body 4331 and a shaft barrel fixing frame 4432, and the shaft barrel fixing frame 4432 is arranged at the lower end of the shaft barrel main body 4331.

The shaft cylinder main body 4331 has a height smaller than the total length of the spiral blade 432.

As shown in fig. 7, the stirring blade 4442 includes a first fixed shaft 44421, a second fixed shaft 44422 and a blade 44423, and the first fixed shaft 44421 and the second fixed shaft 44422 are respectively disposed at two ends of the blade 44423.

The agitating blade 4442 is inclined at an angle.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications can be made without departing from the principles of the present invention, and these modifications should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a pre-expansion machine self-cleaning structure which characterized in that: the device comprises a pre-foaming barrel (1), a feed inlet (2), a discharge outlet (3) and a stirring structure assembly (4), wherein the feed inlet (2) is arranged at the upper end of the pre-foaming barrel (1), the discharge outlet (3) is arranged at the lower end of the pre-foaming barrel (1), and the stirring structure assembly (4) is arranged in the pre-foaming barrel (1); the stirring structure assembly (4) comprises a stirring motor (41), a stirring coupler (42), a stirring shaft structure (43) and a stirring head structure (44), wherein one end of the stirring motor (41) is connected with one end of the stirring shaft structure (43) through the stirring coupler (42), and the stirring head structure (44) is arranged on the stirring shaft structure (43); the stirring head structure (44) comprises an upper fixing flange (441), a lower fixing flange (442), a bearing (443), a first stirring head assembly (444), a second stirring head assembly (445) and a third stirring head assembly (446), wherein the upper fixing flange (441) and the lower fixing flange (442) are vertically arranged, the bearing (443) is arranged inside the lower fixing flange (442), the first stirring head assembly (444), the second stirring head assembly (445) and the third stirring head assembly (446) are arranged in a circumferential array by taking the axis of the upper fixing flange (441) as the center, and the upper end and the lower end of the first stirring head assembly are respectively connected with the upper fixing flange (441) and the lower fixing flange (442); the first stirring head assembly (444), the second stirring head assembly (445) and the third stirring head assembly (446) are identical in structure, the first stirring head assembly (444) comprises a stirring head support (4441), stirring blades (4442), side cleaning structures (4443) and bottom cleaning structures (4444), the stirring blades (4442) are provided with a plurality of groups and are arranged on the stirring head support (4441) at equal intervals from top to bottom, the side cleaning structures (4443) are arranged on the side edge of the stirring head support (4441), and the bottom cleaning structures (4444) are arranged at the lower end of the stirring head support (4441);

the side edge cleaning structure (4443) and the bottom cleaning structure (4444) are identical in structure, the side edge cleaning structure (4443) comprises a cleaning air cylinder (44431), a cleaning scraper (44432), a first scraper stop block (44433), a second scraper stop block (44434) and an air cylinder protective cover (44435), the cleaning air cylinder (44431) comprises a plurality of groups which are arranged on the cleaning scraper (44432) at equal intervals, the first scraper stop block (44433) and the second scraper stop block (44434) are respectively arranged on two sides of the cleaning scraper (44432), and the air cylinder protective cover (44435) is arranged on the outer side of the cleaning air cylinder (44431);

one end of the cleaning scraper (44432) for scraping is arranged at an oblique angle.

2. The automatic cleaning structure for a pre-expander according to claim 1, wherein: the stirring shaft structure (43) comprises a main shaft (431), a spiral blade (432) and a shaft barrel (433), wherein the spiral blade (432) is arranged on the main shaft (431), and the shaft barrel (433) is arranged on the outer side of the spiral blade (432).

3. The automatic cleaning structure for a pre-expander according to claim 2, wherein: the shaft barrel (433) comprises a shaft barrel main body (4331) and a shaft barrel fixing frame (4432), and the shaft barrel fixing frame (4432) is arranged at the lower end of the shaft barrel main body (4331).

4. The automatic cleaning structure for a pre-expander according to claim 3, wherein: the height of the shaft cylinder main body (4331) is less than the total length of the helical blade (432).

5. The automatic cleaning structure for a pre-expander according to claim 1, wherein: the stirring blade (4442) comprises a first fixed shaft (44421), a second fixed shaft (44422) and a blade (44423), and the first fixed shaft (44421) and the second fixed shaft (44422) are respectively arranged at two ends of the blade (44423).

6. The automatic cleaning structure for a pre-expander according to claim 5, wherein: the stirring blade (4442) is disposed to be inclined at an angle.