CN201745106U

CN201745106U - Mixing device

Info

Publication number: CN201745106U
Application number: CN2010202957289U
Authority: CN
Inventors: 加田义辉
Original assignee: Panasonic Electric Works Electronic Materials Shanghai Co Ltd
Current assignee: Panasonic Corp of China
Priority date: 2010-08-18
Filing date: 2010-08-18
Publication date: 2011-02-16
Anticipated expiration: 2020-08-18

Abstract

The utility model relates to a mixing device, which comprises at least two rolls arranged in parallel, wherein a mixing space is formed in the space between the roll surfaces of the rolls, and a material feeding hole is formed above the mixing space; and the mixing device further comprises a cutting assembly for cutting a material layer formed on the roll and a scraping assembly for scraping off the material layer from the roll, wherein the scraping assembly comprises a scraper, the active face of the scraper is in contact with the rolls in the scraping position and faces towards the rotational direction of the rolls, and the included angle between the active face of the scraper and the tangent plane of the roll penetrating the scraping position is equal to or greater than 20 degrees, but equal to or less than 30 degrees. The mixing device overcomes the defects of the conventional mixing device with low scraping efficiency, easy deterioration of quality of the scraper and low quality of the produced products, and can slow down the quality deterioration of the scraper and improve the scraping efficiency as well as the product quality.

Description

A kind of kneading device

Technical field

The utility model relates to a kind of kneading device.Be specially a kind of roll kneading device.

Background technology

The roll kneading device is that tire, rubber and plastics are carried out mixing device commonly used, as shown in Figure 1, this kneading device adopts two rolls 1,2 pairs of mixing materials of being sent here by input port 4 are at two rolls 1, push in the mixing space 3 between 2, different mixing of materials is also formed together twist in the lip-deep material bed of roll, adopt cutting assembly 5 to be divided into a plurality of parts with material bed, adopt cutting blade that material bed surface from roll is scraped afterwards, send into pulverizer and pulverize.When roll rotates, the sword face of cutting blade 6 contacts in the shaving position with roll 2, as shown in Figure 1, angle β between the tangent plane of the sword face of cutting blade 6 and the roll 2 by the shaving position is fixing angle, as shown in Figure 2, the point of a knife of cutting blade 6 is pressed on the roll 2, the power between point of a knife and the roll 2 can be decomposed into along roll 2 radially power and along the tangential power of roll 2.Scrape material bed along roll 2 tangential power, make between point of a knife and the roll 2 along roll 2 power radially to produce frictional force.The point of a knife of existing kneading device and the angle β between tangent plane are provided with smallerly, are generally tens degree, so that increase tangential force as far as possible, reduce friction simultaneously, thus the efficient of raising shaving.The material bed direction of rotation along roll 2 that has some fragmentations in the process of shaving enters the point of a knife of cutting blade 6 and the space between the roll 2.Because the cutting blade 6 and the angle between the roll 2 of roll kneading device are very little, space between the two is very narrow and small, material bed chip extruding easily is deposited in this, not only increased the friction area between point of a knife and the roll 2, reduced the sharp performance of point of a knife, also influence the material bed efficient of shaving simultaneously, do not reached the purpose of raising the efficiency.

In addition, the rotatablely moving of roll makes roll heating itself, and the friction when shaving is material bed between point of a knife and material bed and the roll 2 makes point of a knife and material bed heating, the point of a knife quality speed of worsening quickening of cutting blade 6.The also feasible simultaneously material bed easy generation thermmohardening that is deposited between cutting blade 6 and the roll 2, along with constantly carrying out of sclerosis, the hardening thing that volume is bigger can be sneaked in the product, reduces the quality of product.

The utility model content

The technical problem that the utility model solves is to overcome the low shortcoming of product quality that existing kneading device shaving efficient is low, the cutting blade quality worsens and produces easily, provide a kind of cutting blade quality that delays to worsen, improve shaving efficient, the kneading device that improves the quality of products simultaneously.

A kind of kneading device, comprise at least two rolls that be arranged in parallel, space between the roll surface of roll forms mixing space, top, described mixing space is provided with the material input port, also comprise to be formed on the material bed cutting assembly that cuts on the described roll and will cut after the described material bed shaving assembly that scrapes down from described roll, described shaving assembly comprises cutting blade, the sword face of cutting blade contacts in the shaving position with described roll, the sword face of described cutting blade is in face of the direction of rotation of described roll, the angle between the tangent plane of the sword face of described cutting blade and the described roll by described shaving position more than or equal to 20 degree smaller or equal to 30 degree.

Angle between the tangent plane of the sword face of described cutting blade and the described roll by described shaving position more than or equal to 23 degree smaller or equal to 27 degree.

Angle between the tangent plane of the sword face of described cutting blade and the described roll by described shaving position is 25 degree.

Kneading device described in the utility model is compared with prior art, have following beneficial effect: with the angle between the tangent plane of the sword face of cutting blade and the roll by the shaving position more than or equal to 20 degree smaller or equal to 30 degree, in this angular range, space between cutting blade and the described roll is increased, prevent that material bed chip is squeezed in this and thermmohardening, worsen, improve shaving efficient thereby can delay the cutting blade quality, improve the quality of products simultaneously.

Description of drawings

Fig. 1 is the structural representation of existing kneading device;

Fig. 2 is the structural representation that the cutting blade of existing kneading device matches with roll;

Fig. 3 is the structural representation of kneading device of the present utility model;

Fig. 4 is the structural representation that the cutting blade of kneading device of the present utility model matches with roll.

Reference numeral:

Roll before the roll behind the 21-, 22-, the mixing space of 23-, 24-input port, 25-cutting assembly, 26-cutting blade, 211-resin bed, 212-shaving position.

The specific embodiment

Kneading device described in the utility model is used for carrying out mixing to phenol resin composition.The structure of kneading device is as shown in Figure 3 in the present embodiment: comprise two rolls that be arranged in parallel, and promptly preceding roll 22 and back roll 21, the narrow slit between preceding roll 22 and the back roll 21 forms mixing space 23.Above described mixing space 23, establish the input port 24 in the mixing space 23 with the input that phenol resin composition is arranged, phenol resin composition after dropping into mixing space 23, by preceding roll 22 and back roll 21 extruding becoming flaky resin layer 211 and along with the rotation of roll twist in before on the surface of roll 22.Kneading device comprises that also the cutting assembly 25 that the resin bed 211 that is formed on the described preceding roll 22 is cut reaches the shaving assembly that described resin bed 211 is carried out shaving, and described shaving assembly comprises cutting blade 26.

In the utility model, cutting blade and cooperating of roll are carried out following setting, as shown in Figure 4, the sword face of cutting blade 26 contacts in shaving position 212 with described preceding roll 22, the direction of rotation of the sword face of described cutting blade 26 roll 22 before described, the sword face of described cutting blade 26 are spent with spending smaller or equal to 30 more than or equal to 20 by the angle α between the tangent plane of roll 22 before described shaving position 212 described.In this angular range, the sword face of cutting blade 26 and described before space between the roll 22 increase, prevent that resin bed 211 chips from overstocking in this and thermmohardening, worsen, improve shaving efficient and improve the quality of products simultaneously thereby can delay cutting blade 26 qualities.In the present embodiment, described angle α is 25 degree.

Described in the above-described embodiments angle α can also be that 20 degree or 23 degree or 27 are spent or 30 degree or 20 are spent to any numerical value between 30 degree.

Above embodiment is an exemplary embodiment of the present utility model only, is not used in restriction the utility model, and protection domain of the present utility model is defined by the claims.Those skilled in the art can make various modifications or be equal to replacement the utility model in essence of the present utility model and protection domain, this modification or be equal to replacement and also should be considered as dropping in the protection domain of the present utility model.

Claims

1. kneading device, comprise at least two rolls that be arranged in parallel, space between the roll surface of roll forms mixing space, top, described mixing space is provided with the material input port, also comprise to be formed on the material bed cutting assembly that cuts on the described roll and will cut after the described material bed shaving assembly that scrapes down from described roll, described shaving assembly comprises cutting blade, the sword face of cutting blade contacts in the shaving position with described roll, the sword face of described cutting blade is characterized in that in face of the direction of rotation of described roll: the angle between the tangent plane of the sword face of described cutting blade and the described roll by described shaving position more than or equal to 20 degree smaller or equal to 30 degree.

2. kneading device according to claim 1 is characterized in that: the angle between the tangent plane of the sword face of described cutting blade and the described roll by described shaving position more than or equal to 23 degree smaller or equal to 27 degree.

3. kneading device according to claim 2 is characterized in that: the angle between the tangent plane of the sword face of described cutting blade and the described roll by described shaving position is 25 degree.