CN208730328U - A kind of star-like disk and double screw extruder - Google Patents

Abstract

The utility model relates to a kind of star-like disk and double screw extruders.A kind of star-like disk, including denticle and the multiple gear teeth for being set to denticle outer surface；Denticle is cylindrical structure；Multiple gear teeth are circumferentially uniformly distributed along denticle outer surface；The gear teeth are more terrace with edge structures, and gear teeth bottom surface is connect with denticle outer surface；The junction of each adjacent bevel surfaces of the gear teeth has circular arc chamfering.Star-like disk is by being arranged circular arc chamfering in the junction of more each adjacent bevel surfaces of the prismoid shaped gear teeth, make to realize the shearing and dispersion to glass requirement length using the double screw extruder of the star-like disk, avoid that glass is shredded or length is too short, guarantee that glass is uniformly dispersed in monolith plate simultaneously, the appearance for avoiding bunchy situation improves the physical property of fiberglass product.

Description

A kind of star-like disk and double screw extruder

Technical field

The utility model relates to screw extruder apparatus field, in particular to a kind of star-like disk.

Background technique

Double screw extruder is due to good charging performance, mixing plasticizing capacity, exhaust performance, extrusion stability etc. Feature, has been widely used in the processing and forming of extruded product, greatly changes single-screw machine conveying crushing low efficiency, mixes Refine the defects such as uniformity is poor, unstable product quality, production capacity are low.

Currently, the screwing element of China's double screw extruder mostly uses kneading block or turbine mixing element, by kneading block and Toothed disc is sheared and is dispersed to raw material.When being granulated using double screw extruder, since granulated particles size exists 3x3mm or so, so screwing element is unobvious to the shearing of roving glass fiber and dispersion effect performance；It is being directed to roving glass fiber product, such as In LFT-D technique, due to cut place raw material be template material block, be introduced into extruder roving glass fiber can be shredded by screwing element or product in Length of Glass Fiber is too short, and roving glass fiber disperses unevenly, the case where bunchy easily occur in monolith plate.

Utility model content

The purpose of the utility model embodiment is to provide a kind of star-like disk, by more each adjacent bevel surfaces of the terrace with edge gear teeth Circular arc chamfering is arranged in junction, so that realizing the normal shearing to roving glass fiber using the double screw extruder of the star-like disk and dividing It dissipates, avoids that roving glass fiber is shredded or length is too short, while guaranteeing that glass is uniformly dispersed in monolith plate, avoid the occurrence of bunchy The case where, improve the physical property of product.

In order to solve the above technical problems, the first aspect of the utility model provides a kind of star-like disk, comprising: denticle and set It is placed in multiple gear teeth of the denticle outer surface；The denticle is cylindrical structure；The multiple gear teeth are along the denticle appearance Face is circumferentially uniformly distributed；The gear teeth are more terrace with edge structures, and the gear teeth bottom surface is connect with the denticle outer surface；The gear teeth Each adjacent bevel surfaces junction have circular arc chamfering.

Further, the junction on the wheel crest top land and each inclined-plane has circular arc chamfering.

Further, the gear teeth are truncated rectangular pyramids structure.

Further, the range of axial first angle on parallel two inclined-planes of the gear teeth and the denticle be 15 °- 60°。

Further, the model of axial second angle on two adjacent inclined-planes of parallel inclined-plane of the gear teeth and the denticle Enclose is 45 ° -75 °.

Further, the quantity of the gear teeth is 4-6.

Further, the multiple gear teeth are set to the side of the denticle outer surface axial direction, and the gear teeth bottom surface is along institute The length for stating denticle axial direction is the half of the denticle length.

Further, the denticle middle position is equipped with through-hole, and the through-hole wall is provided with interior involute spline.

The second aspect of the utility model provides a kind of double screw extruder, including the star-like disk, each pair of star Type disk is respectively arranged at the corresponding position on two screw rods of the double screw extruder, and the gear teeth of each pair of star-like disk are described Denticle axially submits mispairing conjunction.

Further, the star-like disk is set to the mixing section of the double screw extruder.

Further, it is provided with multipair star-like disk on the double screw extruder, it is adjacent described star-like on every screw rod Threaded element is set between disk, and the screwing element is by the adjacent star-like disk interval pre-determined distance.

The above-mentioned technical proposal of the utility model has following beneficial technical effect:

By the way that circular arc chamfering is arranged in the junction of more each adjacent bevel surfaces of the terrace with edge gear teeth, so that using the double of the star-like disk Screw extruder realizes the normal shearing and dispersion to roving glass fiber, avoids that roving glass fiber is shredded or length is too short, protects simultaneously The case where card glass is uniformly dispersed in monolith plate, avoids the occurrence of bunchy, improves the physical property of product.

Detailed description of the invention

Fig. 1 is the perspective view of the star-like disk of the utility model embodiment；

Fig. 2 is the axial, cross-sectional view of the star-like disk of the utility model embodiment；

Fig. 3 is the side view of the star-like disk of the utility model embodiment；

Fig. 4 is the top view of each pair of star-like disk being used cooperatively of the utility model embodiment.

In attached drawing:

1, denticle, 2, the gear teeth, the 21, first angle, the 22, second angle, 3, through-hole, 31, interior involute spline.

Specific embodiment

To make the objectives, technical solutions and advantages of the present invention clearer, With reference to embodiment And referring to attached drawing, the utility model is further described.It should be understood that these descriptions are merely illustrative, and do not really want Limit the scope of the utility model.In addition, in the following description, descriptions of well-known structures and technologies are omitted, to avoid not Necessarily obscure the concept of the utility model.

Fig. 1 is the perspective view of the star-like disk of the utility model embodiment.

Fig. 2 is the axial, cross-sectional view of the star-like disk of the utility model embodiment.

Fig. 3 is the side view of the star-like disk of the utility model embodiment.

Fig. 1, Fig. 2 and Fig. 3 are please referred to, the first aspect of the utility model embodiment provides a kind of star-like disk, comprising: tooth Body 1 and the multiple gear teeth 2 for being set to 1 outer surface of denticle；Denticle 1 is cylindrical structure；Multiple gear teeth 2 are along 1 outer surface of denticle week To being uniformly distributed；The gear teeth 2 are more terrace with edge structures, and 2 bottom surface of the gear teeth is connect with 1 outer surface of denticle；The company of each adjacent bevel surfaces of the gear teeth 2 Meeting place has circular arc chamfering.The gear teeth 2 are used for mutually matched two star-like disks using the inclined-plane junction with circular arc chamfering The surface of shearing glass does not have seamed edge, avoids the excessively broken of glass shearing, realizes effective dispersion point of glass and melt Cloth.

The junction on 2 top surface of the gear teeth and each inclined-plane has circular arc chamfering.Top surface and each inclined-plane are also using with circular arc The junction of chamfering makes the entire outer surface of the gear teeth 2 not have seamed edge, further improves and produces roving glass fiber to double screw extruder Yields, improve product quality.

The gear teeth 2 are truncated rectangular pyramids structure.

In the case where other parameters are constant, the first angle 21 determines the volume of the gear teeth 2, that is, determines the mixed of star-like disk Conjunction ability.First angle 21 is bigger, and the volume of the gear teeth 2 is also bigger, and the mixed of star-like disk is stronger, also easier that glass is long Degree shearing is short；First angle 21 is smaller, and the volume of the gear teeth 2 is smaller, and the mixed of star-like disk is weaker, also easier that glass is long Degree shearing length.

Optionally, the gear teeth 2 are 15 ° -60 ° with the range of first angle 21 on the axial two parallel inclined-planes of denticle 1.When When the angular range of one angle 21 is 15 ° -60 °, star-like disk is more balanced to the mixed and shear ability of glass, is guaranteeing Under the premise of Length of Glass Fiber meets the requirements, the good mixed performance to glass is realized.

Preferably, the angle value of the first angle 21 is 30 °.

In the case where other parameters are constant, the second angle 22 determines the volume of the gear teeth 2, that is, determines cutting for star-like disk Cut ability.Second angle 22 is bigger, and the volume of the gear teeth 2 is smaller, and the mixed of star-like disk is weaker, also easier by Length of Glass Fiber Shearing length；Second angle 22 is smaller, and the volume of the gear teeth 2 is bigger, and the mixed of star-like disk is stronger, also easier by Length of Glass Fiber It shears short.

Optionally, the range of second angle 22 on adjacent two inclined-planes of the axial parallel-slope of the gear teeth 2 and denticle 1 be 45 °- 75°.When the angle value of the second angle 22 is in 45 ° -75 °, star-like disk is more equal to the mixed and shear ability of glass Weighing apparatus realizes effective control to Length of Glass Fiber under the premise of guaranteeing that glass mixed performance meets the requirements.

Preferably, the angle value of the second angle 22 is 60 °.

Optionally, the quantity of the gear teeth 2 is 4-6.When 2 quantity of the gear teeth is 4-6, conducive to the dispersion of glass, avoid to grow Glass is sheared excessively broken, be ensure that Length of Glass Fiber, is improved the quality of glass.

Preferably, the quantity of the gear teeth 2 is 5.

In the case where other parameters are constant, the cambered surface distance between 2 bottom surface of the gear teeth determines the volume of the gear teeth 2, that is, determines The mixed of star-like disk.Cambered surface distance is bigger, and the volume of the gear teeth 2 is smaller, and the mixed of star-like disk is weaker, also easier Length of Glass Fiber is sheared and is grown；Cambered surface is apart from smaller, and the volume of the gear teeth 2 is bigger, and the mixed of star-like disk is stronger, it is also easier will Length of Glass Fiber shearing is short.

Optionally, the cambered surface distance range between 2 bottom surface of the gear teeth is 5mm-15mm.When cambered surface distance is between 2 bottom surface of the gear teeth 5mm-15mm, star-like disk have stronger glass mixed while guaranteeing that Length of Glass Fiber meets the requirements.

Preferably, the cambered surface distance between 2 bottom surface of the gear teeth is 7mm.

Multiple gear teeth 2 are set to the side of 1 outer surface of denticle axial direction, and 2 bottom surface of the gear teeth is denticle along the axial length of denticle 1 The half of 1 length.

1 middle position of denticle is equipped with through-hole 3, and 3 inner wall of through-hole is provided with interior involute spline.Interior involute spline is key teeth On cylindrical 1 through-hole of denticle, 3 inner face and tooth form is the spline of involute.Relative to rectangular spline, interior involute spline has The number of teeth is more, and root portion is thick, bearing capacity is strong, easy self-centering, installation accuracy height.Under identical appearance size, the small internal diameter of spline Greatly, be conducive to increase the rigidity of screw rod.Meanwhile interior involute spline be easy to using it is cold rub with the hands, it is cold beat, the chipless processing work such as cold-extruded Skill, high production efficiency, precision is high, saves material, save the cost.

The second aspect of the utility model embodiment provides a kind of double screw extruder, including star-like disk, each pair of star-like Disk is respectively arranged at the corresponding position on two screw rods of double screw extruder, and the gear teeth 2 of each pair of star-like disk are axially submitted in denticle 1 Mispairing is closed.

Double screw extruder includes: conveying section, melt zone, mixing section, exhaust section, homogenizing zone.

The effect of conveying section are as follows: conveying material prevents flash.

The effect of melt zone are as follows: logical heat transfer and fricting shearing make material sufficiently melt and be homogenized.

Mixing section acts on are as follows: refines material component size further with uniformly, forms ideal structure, has and divide Dissipate the function of property and distributivity mixing.

The effect of exhaust section are as follows: the impurity such as discharge steam, low molecular weight substance.

Homogenizing zone is also referred to as metering section, effect are as follows: conveying and pressurization establish certain pressure, there is material at die orifice centainly Consistency, while further mixing, be finally reached the purpose of smooth extruding pelletization.

Fig. 4 is the top view of each pair of star-like disk being used cooperatively of the utility model embodiment.

Referring to figure 4., star-like disk is arranged in pairs the mixing section in double screw extruder.

In an embodiment of the utility model embodiment, multipair star-like disk is provided on double screw extruder, often Threaded element is set between adjacent star-like disk on root screw rod.Screwing element is on the basis of transferring raw material, by adjacent star-like disk It is spaced pre-determined distance, makes to keep pre-determined distance between multipair star-like disk, enhances the effect mixed to roving glass fiber nibbling shear.

In conclusion the utility model is intended to protect a kind of star-like disk, comprising: denticle and be set to the denticle outer surface Multiple gear teeth；The denticle is cylindrical structure；The multiple gear teeth are circumferentially uniformly distributed along the denticle outer surface；It is described The gear teeth are more terrace with edge structures, and the gear teeth bottom surface is connect with the denticle outer surface；The company of each adjacent bevel surfaces of the gear teeth Meeting place has circular arc chamfering.The above-mentioned technical proposal of the utility model has following effect:

By the way that circular arc chamfering is arranged in the junction of more each adjacent bevel surfaces of the terrace with edge gear teeth, so that using the double of the star-like disk Screw extruder is realized normal shearing to roving glass fiber and is dispersed, and avoids that roving glass fiber will not be shredded or length is too short, simultaneously Guarantee the case where glass is uniformly dispersed in monolith plate, avoids the occurrence of bunchy, improves the physical property of product.

It should be understood that the above-mentioned specific embodiment of the utility model is used only for exemplary illustration or explains this reality With novel principle, without constituting limitations of the present invention.Therefore, in the spirit and scope without departing from the utility model In the case of any modification, equivalent substitution, improvement and etc. done, should be included within the scope of protection of this utility model.In addition, The appended claims for the utility model are intended to cover to fall into attached claim scope and boundary or this range and boundary Whole change and modification in equivalent form.

Claims (11)

1. a kind of star-like disk characterized by comprising denticle (1) and the multiple gear teeth for being set to the denticle (1) outer surface (2)；

The denticle (1) is cylindrical structure；

The multiple gear teeth (2) are circumferentially uniformly distributed along the denticle (1) outer surface；

The gear teeth (2) are more terrace with edge structures, and the bottom surface of the gear teeth (2) is connect with the denticle (1) outer surface；

The junction of each adjacent bevel surfaces of the gear teeth (2) has circular arc chamfering.

2. star-like disk according to claim 1, which is characterized in that

The junction on the gear teeth (2) top surface and each inclined-plane has circular arc chamfering.

3. star-like disk according to claim 1, which is characterized in that

The gear teeth (2) are truncated rectangular pyramids structure.

4. star-like disk according to claim 3, which is characterized in that

The gear teeth (2) are 15 ° -60 ° with the range of first angle on the axial two parallel inclined-planes of the denticle (1).

5. star-like disk according to claim 3, which is characterized in that

The range of second angle on two adjacent inclined-planes of the axial parallel inclined-plane of the gear teeth (2) and the denticle (1) is 45°-75°。

6. star-like disk according to claim 1, which is characterized in that

The quantity of the gear teeth (2) is 4-6.

7. star-like disk according to claim 3, which is characterized in that

The multiple gear teeth (2) are set to the side of the denticle (1) outer surface axial direction, and the gear teeth (2) bottom surface is along the tooth The length of body (1) axial direction is the half of the denticle (1) length.

8. star-like disk according to claim 1-7, which is characterized in that

Denticle (1) middle position is equipped with through-hole (3), and through-hole (3) inner wall is provided with interior involute spline (31).

9. a kind of double screw extruder, which is characterized in that described every including star-like disk described at least a pair of of claim 8 Corresponding position on two screw rods of the double screw extruder, the gear teeth of each pair of star-like disk are respectively arranged to star-like disk (2) mispairing is axially submitted in the denticle (1) to close.

10. double screw extruder according to claim 9, which is characterized in that

The star-like disk is set to the mixing section of the double screw extruder.

11. a kind of double screw extruder according to claim 9 or 10, which is characterized in that

It is provided with multipair star-like disk on the double screw extruder, is provided with screw thread between the adjacent star-like disk on every screw rod Element, the screwing element is by the adjacent star-like disk interval pre-determined distance.