CN110802818A - Crushing type plastic extruder - Google Patents

Abstract

The invention discloses a crushing type plastic extruder, wherein a main crushing device comprises a motor, a first rotating shaft, a driving gear, first stirring blades and a pressing plate, the motor is arranged in the middle of the upper end of a box body, the output end of the motor is connected with the first rotating shaft, the other end of the first rotating shaft penetrates through the top wall of the box body to reach the inside of the extruding device, a section of side wall, located in the box body, of the first rotating shaft is connected with a plurality of first stirring blades in an equidistant and circumferential mode, the extruding device comprises an extruding box, a filtering plate and a spiral rod, the upper end of the extruding box is fixedly communicated with the middle of the lower end of the box body, the upper end of the inner side wall of the extruding box is fixedly connected with the filtering plate, the spiral rod is movably inserted on the filtering plate. The invention has the characteristics of good crushing effect, improvement on working efficiency and the like, and has strong practicability.

Description

Crushing type plastic extruder

Technical Field

The invention relates to the field of extruders, in particular to a crushing type plastic extruder.

Background

The existing plastic extruder is a common plastic processing device, while the screw extruder is the most common mixing molding device, molten plastic needs to be led out from a hot melting cavity and injected into a mold by an extrusion head for cooling molding in the injection molding process of the plastic, and the molten polystyrene extruded by an extrusion head cannot be completely melted to be molten in the actual heating process of the hot melting cavity, so that the molten polystyrene contains solid particles, the injection molding quality is affected, the mechanical property of a finished product is reduced, and the integrity of the injection molding is damaged. The long-time operation can cause production pressure to the extruder and shorten the service life of the extruder, and therefore, a crushing type plastic extruder is provided.

Disclosure of Invention

The invention aims to provide a crushing type plastic extruder to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a crushing type plastic extruder comprises a box body, a feed inlet formed in the side wall of the box body, supporting legs connected with the lower end of the box body, a main crushing device arranged on the box body and an extruding device connected to the middle part of the bottom end of the box body in a penetrating manner, wherein the main crushing device consists of a motor, a first rotating shaft, a driving gear, a first stirring blade and a pressing plate, the motor is arranged in the middle part of the upper end of the box body, the output end of the motor is connected with the first rotating shaft, the other end of the first rotating shaft penetrates through the top wall of the box body to reach the inside of the extruding device, a section of side wall, located in the box body, of the first rotating shaft is circumferentially connected with a plurality of first stirring blades in an equidistant manner, the extruding device comprises an extruding box, a filtering plate and a spiral rod, the upper end of the extruding box is, the upper end of the screw rod is fixedly connected with the lower end of the first rotating shaft.

Preferably, a plurality of vice reducing mechanism are still installed to the inner chamber of box, vice reducing mechanism comprises second pivot, driven gear and second stirring vane, the both ends of second pivot are connected with the interior roof and the interior diapire rotation of box, are connected with the second stirring vane who matches with first stirring vane on the lateral wall of second pivot, the fixed cover of having cup jointed driven gear in the second pivot, driven gear and the fixed driving gear engagement of cup jointing on first pivot.

Preferably, the auxiliary crushing device further comprises an extrusion plate, the extrusion plate is connected to the lower end of the side wall of the second rotating shaft, and a pressing plate matched with the extrusion plate is movably inserted into the lower end of the side wall of the first rotating shaft.

Preferably, a plurality of V-arrangement grooves are seted up to the one end equidistance that second pivot was kept away from to second stirring vane, the sawtooth with V-arrangement groove matching is seted up to first stirring vane's lateral wall.

Preferably, two sliding grooves are symmetrically formed in the lower end of the side wall of the first rotating shaft, sliding blocks are connected in the sliding grooves in a sliding mode, the side wall of each sliding block is fixedly connected with the side wall of the inner ring of the pressing plate, the lower end of each sliding block is connected with a spring, and the other end of each spring is connected with the side wall of each sliding groove.

Preferably, the circumferential direction of the side edge of the upper end of the pressure plate is of a round angle type structure.

Compared with the prior art, the invention has the beneficial effects that:

1. primarily crushing the materials through a main crushing device, and spirally discharging the crushed materials from an extrusion box through a screw rod;

2. by adding the auxiliary crushing device, the driving gear and the driven gear are meshed for reverse rotation, so that the first stirring blade and the second stirring blade rotate reversely for secondary crushing, and the crushing effect is improved;

3. the second rotating shaft rotates to drive the extrusion plate to extrude the pressing plate periodically, and the pressing plate moves downwards to accelerate the discharge of the materials from the filter plate.

In conclusion, the invention has strong practicability.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

FIG. 2 is a schematic view of the cross-sectional structure A-A.

In the figure: the crushing device comprises a box body 1, a main crushing device 2, a motor 21, a first rotating shaft 22, a driving gear 23, a first stirring blade 24, a pressing plate 25, an auxiliary crushing device 3, a second rotating shaft 31, a driven gear 32, a second stirring blade 33, a squeezing plate 34, a squeezing device 4, a squeezing box 41, a filtering plate 42 and a screw rod 43.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution:

the utility model provides a crushing type plastic extruder, the power distribution box comprises a box body 1, the feed inlet that 1 lateral wall of box was seted up, the supporting leg that 1 lower extreme of box is connected, install main reducing mechanism 2 on box 1 and link up the extrusion device 4 at 1 bottom middle part of box, main reducing mechanism 2 is by motor 21, first pivot 22, driving gear 23, first stirring vane 24 and clamp plate 25 are constituteed, motor 21 installs the upper end middle part at box 1, motor 21 passes through the wire and becomes the series circuit with external power supply module, motor 21's output is connected with first pivot 22, the inside that extrusion device 4 was reachd to box 1's roof is run through to first pivot 22's the other end, first pivot 22 is located a plurality of first stirring vane 24 of one section lateral wall equidistance circumferential connection of box 1, stir the plastics material.

A plurality of vice reducing mechanism 3 are still installed to the inner chamber of box 1, vice reducing mechanism 3 is by second pivot 31, driven gear 32 and second stirring vane 33 are constituteed, the both ends of second pivot 31 are connected with the interior roof and the interior diapire rotation of box 1, be connected with the second stirring vane 33 that matches with first stirring vane 24 on the lateral wall of second pivot 31, a plurality of V-arrangement grooves have been seted up to the one end equidistance that second stirring vane 33 kept away from second pivot 31, the sawtooth with the V-arrangement groove matching has been seted up to the lateral wall of first stirring vane 24. The second shaft 31 is fixedly connected with a driven gear 32, and the driven gear 32 is engaged with the driving gear 23 fixedly sleeved on the first shaft 22. The auxiliary crushing device 3 further comprises a squeezing plate 34, the squeezing plate 34 is connected to the lower end of the side wall of the second rotating shaft 31, and a pressing plate 25 matched with the squeezing plate 34 is movably inserted into the lower end of the side wall of the first rotating shaft 22. The upper end side circumference of clamp plate 25 is fillet type structure, prevents that crowded board 34 from extrudeing and causing the damage to clamp plate 25 on the clamp plate 25, and two spouts have been seted up to the lateral wall lower extreme symmetry of first pivot 22, and sliding connection has the slider in the spout, the lateral wall of slider and clamp plate 25's inner circle lateral wall fixed connection, and the lower extreme of slider is connected with the spring, and the other end of spring is connected with the lateral wall of spout.

The extruding device 4 comprises an extruding box 41, a filter plate 42 and a screw rod 43, the upper end of the extruding box 41 is fixedly communicated with the middle part of the lower end of the box body 1, the upper end of the inner side wall of the extruding box 41 is fixedly connected with the filter plate 42, the screw rod 43 is movably inserted into the filter plate 42, the upper end of the screw rod 43 is fixedly connected with the lower end of the first rotating shaft 22, the lower end of the screw rod 43 is positioned in the extruding box 41, and the extruding box 41 is of an irregular cylindrical structure with a large upper end diameter and a small lower end diameter.

In the scheme, plastic materials enter from a feeding hole, an external power supply is connected, a motor 21 is started to drive a first rotating shaft 22 to rotate, so that a first stirring blade 24 and a driving gear 23 are driven to rotate, the first stirring blade 24 rotates to carry out preliminary stirring, the driving gear 23 drives a driven gear 32 to rotate, so that a second rotating shaft 31 is driven to rotate, a second stirring blade 33 is driven to rotate to stir, the second rotating shaft 31 and the first rotating shaft 22 rotate in the opposite direction, a V-shaped groove in the second stirring blade 33 is meshed with sawteeth in the first stirring blade 24, the stirring and crushing effects are further improved, the first rotating shaft 22 drives a screw rod 43 to rotate, and crushed plastic is discharged;

the second rotating shaft 31 rotates to drive the extruding plate 34 to rotate, the extruding plate 34 extrudes the pressing plate 25, so that the pressing plate 25 presses downwards, the discharge of materials from the filtering plate 42 is accelerated, the working efficiency is improved, when the extruding plate 34 is separated from the pressing plate 25, the pressing plate 25 returns to the box body 1 under the resilience force of the spring, the materials are not influenced to enter the extruding device 4, and the invention has the characteristics of good crushing effect, improvement of the working efficiency and the like, and has strong practicability.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a crushing type plastic extruder, includes that box (1), the feed inlet that box (1) lateral wall was seted up, the supporting leg that box (1) lower extreme is connected, install main reducing mechanism (2) and the extrusion device (4) of through connection in box (1) bottom middle part on box (1), its characterized in that:

the main crushing device (2) is composed of a motor (21), a first rotating shaft (22), a driving gear (23), first stirring blades (24) and a pressing plate (25), the motor (21) is installed in the middle of the upper end of the box body (1), the output end of the motor (21) is connected with the first rotating shaft (22), the other end of the first rotating shaft (22) penetrates through the top wall of the box body (1) to reach the inside of the extruding device (4), one section of side wall of the first rotating shaft (22) located in the box body (1) is circumferentially connected with a plurality of first stirring blades (24) at equal intervals, the extruding device (4) comprises an extruding box (41), a filtering plate (42) and a spiral rod (43), the upper end of the extruding box (41) is fixedly communicated with the middle of the lower end of the box body (1), the upper end of the inner side wall of the extruding box (41) is fixedly connected with the filtering plate (42), and the spiral rod (43, the upper end of the screw rod (43) is fixedly connected with the lower end of the first rotating shaft (22).

2. A pulverizing type plastic extruder as claimed in claim 1, wherein: a plurality of vice reducing mechanism (3) are still installed to the inner chamber of box (1), vice reducing mechanism (3) comprise second pivot (31), driven gear (32) and second stirring vane (33), the both ends of second pivot (31) are connected with the interior roof and the interior diapire rotation of box (1), are connected with second stirring vane (33) that match with first stirring vane (24) on the lateral wall of second pivot (31), fixed cover has been cup jointed driven gear (32) on second pivot (31), and driven gear (32) and fixed driving gear (23) the meshing of cup jointing on first pivot (22).

3. A pulverizing type plastic extruder as claimed in claim 2, wherein: the auxiliary crushing device (3) further comprises an extrusion plate (34), the extrusion plate (34) is connected to the lower end of the side wall of the second rotating shaft (31), and a pressing plate (25) matched with the extrusion plate (34) is movably inserted into the lower end of the side wall of the first rotating shaft (22).

4. A pulverizing type plastic extruder as claimed in claim 2, wherein: a plurality of V-arrangement grooves have been seted up to second stirring vane (33) keep away from the one end equidistance of second pivot (31), the sawtooth with V-arrangement groove matching has been seted up to the lateral wall of first stirring vane (24).

5. A pulverizing type plastic extruder as claimed in claim 3, wherein: two sliding grooves are symmetrically formed in the lower end of the side wall of the first rotating shaft (22), sliding blocks are connected in the sliding grooves, the side wall of each sliding block is fixedly connected with the side wall of the inner ring of the pressing plate (25), the lower end of each sliding block is connected with a spring, and the other end of each spring is connected with the side wall of each sliding groove.

6. A pulverizing type plastic extruder as claimed in claim 3, wherein: the circumference of the side edge of the upper end of the pressing plate (25) is of a fillet structure.